Check-in [6c02d4d029]
EuroTcl/OpenACS 11 - 12 JULY 2024, VIENNA
Overview
Comment:Merged TEA branch into master
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA3-256: 6c02d4d0291e784b0aa50630f09dc680de1dab0f2e1d322897ded26332b13a8e
User & Date: bohagan on 2023-05-13 20:25:38
Other Links: manifest | tags
Context
2023-07-16
15:05
Merge status and X509 updates branch check-in: 1924dcd361 user: bohagan tags: trunk
2023-05-19
23:17
Created status_x509 updates branch check-in: 8db793f55f user: bohagan tags: status_x509
2023-05-13
20:25
Merged TEA branch into master check-in: 6c02d4d029 user: bohagan tags: trunk
19:35
Updated README.txt file Leaf check-in: d34cd241be user: bohagan tags: TEA
2023-04-23
04:49
Starkit fix to add current library names to tls.tcl starkit load function. Source: https://sourceforge.net/p/tls/bugs/55/ and https://sourceforge.net/p/tls/bugs/44/ check-in: c9cb1a525d user: bohagan tags: trunk
Changes

Deleted HEADER version [b4ecd86142].

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TclTLS @@VERS@@
==========

Release Date: @@DATE@@

https://tcltls.rkeene.org/

Modified Makefile.in from [500d902713] to [3d826d82ee].














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# Makefile.in --
#
#	This file is the Makefile for the TclTLS Extension. The file
#	"Makefile.in" is the template for a Makefile. To generate the
#	actual Makefile, run "./configure", which is a configuration script
#	generated by the "autoconf" program (constructs like "@foo@" will
#	get replaced in the actual Makefile.
#
# Copyright (c) 1999 Scriptics Corporation.
# Copyright (c) 2002-2005 ActiveState Corporation.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
CC = @CC@
AR = @AR@
RANLIB = @RANLIB@
CFLAGS = @CFLAGS@ @SHOBJFLAGS@
CPPFLAGS = @CPPFLAGS@ -I@srcdir@ -I. @DEFS@ @TCL_DEFS@
LDFLAGS = @LDFLAGS@ @SHOBJLDFLAGS@
LIBS = @LIBS@
PACKAGE_VERSION = @PACKAGE_VERSION@
prefix = @prefix@
exec_prefix = @exec_prefix@
libdir = @libdir@
TCL_PACKAGE_PATH = @TCL_PACKAGE_PATH@
PACKAGE_INSTALL_DIR = $(TCL_PACKAGE_PATH)/tcltls$(PACKAGE_VERSION)
INSTALL = @INSTALL@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
INSTALL_DATA = @INSTALL_DATA@
VPATH = @srcdir@

#========================================================================
# Add additional lines to handle any additional AC_SUBST cases that
# have been added in a customized configure script.
#========================================================================

#SAMPLE_NEW_VAR	= @SAMPLE_NEW_VAR@

#========================================================================
# Nothing of the variables below this line should need to be changed.
# Please check the TARGETS section below to make sure the make targets
# are correct.
#========================================================================

#========================================================================
# The names of the source files is defined in the configure script.
# The object files are used for linking into the final library.
# This will be used when a dist target is added to the Makefile.
# It is not important to specify the directory, as long as it is the
# $(srcdir) or in the generic, win or unix subdirectory.
#========================================================================

PKG_SOURCES	= @PKG_SOURCES@
PKG_OBJECTS	= @PKG_OBJECTS@

PKG_STUB_SOURCES = @PKG_STUB_SOURCES@
PKG_STUB_OBJECTS = @PKG_STUB_OBJECTS@

#========================================================================
# PKG_TCL_SOURCES identifies Tcl runtime files that are associated with
# this package that need to be installed, if any.
#========================================================================

PKG_TCL_SOURCES = @PKG_TCL_SOURCES@

#========================================================================
# This is a list of public header files to be installed, if any.
#========================================================================

PKG_HEADERS	= @PKG_HEADERS@

#========================================================================
# "PKG_LIB_FILE" refers to the library (dynamic or static as per
# configuration options) composed of the named objects.
#========================================================================

PKG_LIB_FILE	= @PKG_LIB_FILE@
PKG_LIB_FILE8	= @PKG_LIB_FILE8@
PKG_LIB_FILE9	= @PKG_LIB_FILE9@
PKG_STUB_LIB_FILE = @PKG_STUB_LIB_FILE@

lib_BINARIES	= $(PKG_LIB_FILE)
BINARIES	= dh_params.h tls.tcl.h $(lib_BINARIES) pkgIndex.tcl

SHELL		= @SHELL@

srcdir		= @srcdir@
prefix		= @prefix@
exec_prefix	= @exec_prefix@

bindir		= @bindir@
libdir		= @libdir@
includedir	= @includedir@
datarootdir	= @datarootdir@
runstatedir	= @runstatedir@
datadir		= @datadir@
mandir		= @mandir@

DESTDIR		=
all: @EXTENSION_TARGET@

PKG_DIR		= $(PACKAGE_NAME)$(PACKAGE_VERSION)
pkgdatadir	= $(datadir)/$(PKG_DIR)
pkglibdir	= $(libdir)/$(PKG_DIR)
pkgincludedir	= $(includedir)/$(PKG_DIR)

top_builddir	= @abs_top_builddir@
@EXTENSION_TARGET@: @TCLEXT_BUILD@-@EXTENSION_TARGET@
	mv @TCLEXT_BUILD@-@EXTENSION_TARGET@ @EXTENSION_TARGET@

INSTALL_OPTIONS	=
INSTALL		= @INSTALL@ $(INSTALL_OPTIONS)
INSTALL_DATA_DIR = @INSTALL_DATA_DIR@
INSTALL_DATA	= @INSTALL_DATA@
INSTALL_PROGRAM	= @INSTALL_PROGRAM@
INSTALL_SCRIPT	= @INSTALL_SCRIPT@
INSTALL_LIBRARY	= @INSTALL_LIBRARY@

PACKAGE_NAME	= @PACKAGE_NAME@
PACKAGE_VERSION	= @PACKAGE_VERSION@
CC		= @CC@
CCLD		= @CCLD@
CFLAGS_DEFAULT	= @CFLAGS_DEFAULT@
CFLAGS_WARNING	= @CFLAGS_WARNING@
EXEEXT		= @EXEEXT@
LDFLAGS_DEFAULT	= @LDFLAGS_DEFAULT@
MAKE_LIB	= @MAKE_LIB@
MAKE_STUB_LIB	= @MAKE_STUB_LIB@
OBJEXT		= @OBJEXT@
RANLIB		= @RANLIB@
RANLIB_STUB	= @RANLIB_STUB@
SHLIB_CFLAGS	= @SHLIB_CFLAGS@
SHLIB_LD	= @SHLIB_LD@
SHLIB_LD_LIBS	= @SHLIB_LD_LIBS@
STLIB_LD	= @STLIB_LD@
#TCL_DEFS	= @TCL_DEFS@
TCL_BIN_DIR	= @TCL_BIN_DIR@
TCL_SRC_DIR	= @TCL_SRC_DIR@
#TK_BIN_DIR	= @TK_BIN_DIR@
#TK_SRC_DIR	= @TK_SRC_DIR@

# Not used, but retained for reference of what libs Tcl required
#TCL_LIBS	= @TCL_LIBS@

#========================================================================
# TCLLIBPATH seeds the auto_path in Tcl's init.tcl so we can test our
# package without installing.  The other environment variables allow us
# to test against an uninstalled Tcl.  Add special env vars that you
# require for testing here (like TCLX_LIBRARY).
#========================================================================

EXTRA_PATH	= $(top_builddir):$(TCL_BIN_DIR)
#EXTRA_PATH	= $(top_builddir):$(TCL_BIN_DIR):$(TK_BIN_DIR)
TCLLIBPATH	= $(top_builddir)
TCLSH_ENV	= TCL_LIBRARY=`@CYGPATH@ $(TCL_SRC_DIR)/library`
PKG_ENV		= @LD_LIBRARY_PATH_VAR@="$(EXTRA_PATH):$(@LD_LIBRARY_PATH_VAR@)" \
		  PATH="$(EXTRA_PATH):$(PATH)" \
		  TCLLIBPATH="$(TCLLIBPATH)"

TCLSH_PROG	= @TCLSH_PROG@
TCLSH		= $(TCLSH_ENV) $(PKG_ENV) $(TCLSH_PROG)

#WISH_ENV	= TK_LIBRARY=`@CYGPATH@ $(TK_SRC_DIR)/library`
#WISH_PROG	= @WISH_PROG@
#WISH		= $(TCLSH_ENV) $(WISH_ENV) $(PKG_ENV) $(WISH_PROG)

SHARED_BUILD	= @SHARED_BUILD@

INCLUDES	= @PKG_INCLUDES@ @TCL_INCLUDES@ $(SSL_INCLUDES) -I.
#INCLUDES	= @PKG_INCLUDES@ @TCL_INCLUDES@ @TK_INCLUDES@ @TK_XINCLUDES@

PKG_CFLAGS	= @PKG_CFLAGS@

# TCL_DEFS is not strictly need here, but if you remove it, then you
# must make sure that configure.ac checks for the necessary components
# that your library may use.  TCL_DEFS can actually be a problem if
# you do not compile with a similar machine setup as the Tcl core was
# compiled with.
#DEFS		= $(TCL_DEFS) @DEFS@ $(PKG_CFLAGS)
DEFS		= @DEFS@ $(PKG_CFLAGS)

# Move pkgIndex.tcl to 'BINARIES' var if it is generated in the Makefile
CONFIG_CLEAN_FILES = Makefile pkgIndex.tcl generic/dh_params.h generic/tls.tcl.h
CLEANFILES	= @CLEANFILES@
# The shared object target
shared-@EXTENSION_TARGET@: tls.o tlsBIO.o tlsIO.o tlsX509.o Makefile
	$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -o shared-@EXTENSION_TARGET@ tls.o tlsBIO.o tlsIO.o tlsX509.o $(LIBS)
	-@WEAKENSYMS@ shared-@EXTENSION_TARGET@
	-@REMOVESYMS@ shared-@EXTENSION_TARGET@

CPPFLAGS	= @CPPFLAGS@
LIBS		= @PKG_LIBS@ @LIBS@
AR		= @AR@
CFLAGS		= @CFLAGS@
LDFLAGS		= @LDFLAGS@
LDFLAGS_DEFAULT	= @LDFLAGS_DEFAULT@
COMPILE		= $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) \
			  $(CFLAGS_DEFAULT) $(CFLAGS_WARNING) $(SHLIB_CFLAGS) $(CFLAGS)

GDB		= gdb
VALGRIND	= valgrind
VALGRINDARGS	= --tool=memcheck --num-callers=8 --leak-resolution=high \
		  --leak-check=yes --show-reachable=yes -v

.SUFFIXES: .c .$(OBJEXT)

#========================================================================
# Start of user-definable TARGETS section
#========================================================================

#========================================================================
# TEA TARGETS.  Please note that the "libraries:" target refers to platform
# independent files, and the "binaries:" target includes executable programs and
# platform-dependent libraries.  Modify these targets so that they install
# the various pieces of your package.  The make and install rules
# for the BINARIES that you specified above have already been done.
#========================================================================

all: binaries libraries doc
# The static target
static-@EXTENSION_TARGET@: tls.o tlsBIO.o tlsIO.o tlsX509.o Makefile
	$(AR) rcu static-@EXTENSION_TARGET@ tls.o tlsBIO.o tlsIO.o tlsX509.o
	-$(RANLIB) static-@EXTENSION_TARGET@

#========================================================================
# The binaries target builds executable programs, Windows .dll's, unix
# shared/static libraries, and any other platform-dependent files.
# The list of targets to build for "binaries:" is specified at the top
# of the Makefile, in the "BINARIES" variable.
#========================================================================

binaries: $(BINARIES)

libraries:

#========================================================================
# Your doc target should differentiate from doc builds (by the developer)
# and doc installs (see install-doc), which just install the docs on the
# end user machine when building from source.
#========================================================================

doc:
	@echo "If you have documentation to create, place the commands to"
	@echo "build the docs in the 'doc:' target.  For example:"
	@echo "        xml2nroff sample.xml > sample.n"
	@echo "        xml2html sample.xml > sample.html"

install: all install-binaries install-libraries install-doc

install-binaries: binaries install-lib-binaries install-bin-binaries

#========================================================================
# This rule installs platform-independent files, such as header files.
# The list=...; for p in $$list handles the empty list case x-platform.
#========================================================================

install-libraries: libraries
	@$(INSTALL_DATA_DIR) "$(DESTDIR)$(includedir)"
	@echo "Installing header files in $(DESTDIR)$(includedir)"
	@list='$(PKG_HEADERS)'; for i in $$list; do \
	    echo "Installing $(srcdir)/$$i" ; \
	    $(INSTALL_DATA) $(srcdir)/$$i "$(DESTDIR)$(includedir)" ; \
	done;

#========================================================================
# Install documentation.  Unix manpages should go in the $(mandir)
# directory.
#========================================================================

install-doc: doc
	@$(INSTALL_DATA_DIR) "$(DESTDIR)$(mandir)/mann"
	@echo "Installing documentation in $(DESTDIR)$(mandir)"
	@list='$(srcdir)/doc/*.n'; for i in $$list; do \
	    echo "Installing $$i"; \
	    $(INSTALL_DATA) $$i "$(DESTDIR)$(mandir)/mann" ; \
	done
# Dependencies for all our targets
tls.o: @srcdir@/tls.c @srcdir@/tlsInt.h @srcdir@/tclOpts.h tls.tcl.h dh_params.h Makefile
	$(CC) $(CPPFLAGS) $(CFLAGS) -o tls.o -c @srcdir@/tls.c

test: binaries libraries
	$(TCLSH) `@CYGPATH@ $(srcdir)/tests/all.tcl` $(TESTFLAGS) \
	    -load "package ifneeded $(PACKAGE_NAME) $(PACKAGE_VERSION) \
		[list load `@CYGPATH@ $(PKG_LIB_FILE)` [string totitle $(PACKAGE_NAME)]]"

shell: binaries libraries
	@$(TCLSH) $(SCRIPT)

gdb:
	$(TCLSH_ENV) $(PKG_ENV) $(GDB) $(TCLSH_PROG) $(SCRIPT)

gdb-test: binaries libraries
	$(TCLSH_ENV) $(PKG_ENV) $(GDB) \
	    --args $(TCLSH_PROG) `@CYGPATH@ $(srcdir)/tests/all.tcl` \
	    $(TESTFLAGS) -singleproc 1 \
	    -load "package ifneeded $(PACKAGE_NAME) $(PACKAGE_VERSION) \
		[list load `@CYGPATH@ $(PKG_LIB_FILE)` [string totitle $(PACKAGE_NAME)]]"
tlsBIO.o: @srcdir@/tlsBIO.c @srcdir@/tlsInt.h Makefile
	$(CC) $(CPPFLAGS) $(CFLAGS) -o tlsBIO.o -c @srcdir@/tlsBIO.c

valgrind: binaries libraries
	$(TCLSH_ENV) $(PKG_ENV) $(VALGRIND) $(VALGRINDARGS) $(TCLSH_PROG) \
	    `@CYGPATH@ $(srcdir)/tests/all.tcl` $(TESTFLAGS)

valgrindshell: binaries libraries
	$(TCLSH_ENV) $(PKG_ENV) $(VALGRIND) $(VALGRINDARGS) $(TCLSH_PROG) $(SCRIPT)

depend:
tlsIO.o: @srcdir@/tlsIO.c @srcdir@/tlsInt.h Makefile
	$(CC) $(CPPFLAGS) $(CFLAGS) -o tlsIO.o -c @srcdir@/tlsIO.c

#========================================================================
# $(PKG_LIB_FILE) should be listed as part of the BINARIES variable
# mentioned above.  That will ensure that this target is built when you
# run "make binaries".
#
# The $(PKG_OBJECTS) objects are created and linked into the final
# library.  In most cases these object files will correspond to the
# source files above.
#========================================================================

$(PKG_LIB_FILE): $(PKG_OBJECTS)
	-rm -f $(PKG_LIB_FILE)
	${MAKE_LIB}
	$(RANLIB) $(PKG_LIB_FILE)

$(PKG_STUB_LIB_FILE): $(PKG_STUB_OBJECTS)
	-rm -f $(PKG_STUB_LIB_FILE)
	${MAKE_STUB_LIB}
	$(RANLIB_STUB) $(PKG_STUB_LIB_FILE)
tlsX509.o: @srcdir@/tlsX509.c @srcdir@/tlsInt.h Makefile
	$(CC) $(CPPFLAGS) $(CFLAGS) -o tlsX509.o -c @srcdir@/tlsX509.c

#========================================================================
# We need to enumerate the list of .c to .o lines here.
#
# In the following lines, $(srcdir) refers to the toplevel directory
# containing your extension.  If your sources are in a subdirectory,
# you will have to modify the paths to reflect this:
#
# sample.$(OBJEXT): $(srcdir)/generic/sample.c
# 	$(COMPILE) -c `@CYGPATH@ $(srcdir)/generic/sample.c` -o $@
#
# Setting the VPATH variable to a list of paths will cause the makefile
# to look into these paths when resolving .c to .obj dependencies.
# As necessary, add $(srcdir):$(srcdir)/compat:....
#========================================================================

VPATH = $(srcdir):$(srcdir)/generic:$(srcdir)/unix:$(srcdir)/win:$(srcdir)/macosx

.c.@OBJEXT@:
	$(COMPILE) -c `@CYGPATH@ $<` -o $@

# Create a C-source-ified version of the script resources
# for TclTLS so that we only need a single file to enable
# this extension
tls.tcl.h: @srcdir@/tls.tcl Makefile
	od -A n -v -t xC < '@srcdir@/tls.tcl' > tls.tcl.h.new.1
tls.tcl.h: @srcdir@/library/tls.tcl Makefile
	od -A n -v -t xC < '@srcdir@/library/tls.tcl' > tls.tcl.h.new.1
	sed 's@[^0-9A-Fa-f]@@g;s@..@0x&, @g' < tls.tcl.h.new.1 > tls.tcl.h.new.2
	rm -f tls.tcl.h.new.1
	mv tls.tcl.h.new.2 tls.tcl.h
	mv tls.tcl.h.new.2 @srcdir@/generic/tls.tcl.h

# Create default DH parameters
dh_params.h: @srcdir@/gen_dh_params Makefile
	sh @srcdir@/gen_dh_params @GEN_DH_PARAMS_ARGS@ > dh_params.h.new
	mv dh_params.h.new dh_params.h
dh_params.h: @srcdir@/generic/gen_dh_params Makefile
	sh @srcdir@/generic/gen_dh_params @GEN_DH_PARAMS_ARGS@ > dh_params.h.new
	mv dh_params.h.new @srcdir@/generic/dh_params.h

$(srcdir)/manifest.uuid:
	printf "git-" >$(srcdir)/manifest.uuid
	(cd $(srcdir); git rev-parse HEAD >>$(srcdir)/manifest.uuid || \
	    (printf "svn-r" >$(srcdir)/manifest.uuid ; \
	    svn info --show-item last-changed-revision >>$(srcdir)/manifest.uuid) || \
	    printf "unknown" >$(srcdir)/manifest.uuid)
# Install the extension
install: @EXTENSION_TARGET@ pkgIndex.tcl
	$(INSTALL) -d '$(DESTDIR)$(PACKAGE_INSTALL_DIR)'
	$(INSTALL_PROGRAM) @EXTENSION_TARGET@ '$(DESTDIR)$(PACKAGE_INSTALL_DIR)'
	$(INSTALL_DATA)    pkgIndex.tcl '$(DESTDIR)$(PACKAGE_INSTALL_DIR)'

tlsUuid.h:	$(srcdir)/manifest.uuid
	echo "#define TLS_VERSION_UUID \\" >$@
	cat $(srcdir)/manifest.uuid >>$@
	echo "" >>$@

#========================================================================
# Create the pkgIndex.tcl file.
# It is usually easiest to let Tcl do this for you with pkg_mkIndex, but
# you may find that you need to customize the package.  If so, either
# modify the -hand version, or create a pkgIndex.tcl.in file and have
# the configure script output the pkgIndex.tcl by editing configure.in.
#========================================================================

pkgIndex.tcl: $(srcdir)/pkgIndex.tcl.in
	cd $(top_builddir) \
	  && CONFIG_FILES=$@ CONFIG_HEADERS= $(SHELL) ./config.status

#========================================================================
# Distribution creation
# You may need to tweak this target to make it work correctly.
#========================================================================

#COMPRESS	= tar cvf $(PKG_DIR).tar $(PKG_DIR); compress $(PKG_DIR).tar
COMPRESS	= tar zcvf $(PKG_DIR).tar.gz $(PKG_DIR)
DIST_ROOT	= /tmp/dist
DIST_DIR	= $(DIST_ROOT)/$(PKG_DIR)

DIST_INSTALL_DATA	= CPPROG='cp -p' $(INSTALL) -m 644
DIST_INSTALL_DATA_RECUR	= CPPROG='cp -p -R' $(INSTALL)
DIST_INSTALL_SCRIPT	= CPPROG='cp -p' $(INSTALL) -m 755

dist-clean:
	rm -rf $(DIST_DIR) $(DIST_ROOT)/$(PKG_DIR).tar.*

dist: dist-clean
	# TEA files
	$(INSTALL_DATA_DIR) $(DIST_DIR)
	$(DIST_INSTALL_DATA) $(srcdir)/Makefile.in \
		$(srcdir)/acinclude.m4 $(srcdir)/aclocal.m4 \
		$(srcdir)/configure.ac $(DIST_DIR)/
	$(DIST_INSTALL_SCRIPT) $(srcdir)/configure $(DIST_DIR)/

	# Extension files
	$(DIST_INSTALL_DATA) $(srcdir)/ChangeLog \
		$(srcdir)/license.terms $(srcdir)/README.txt \
		$(srcdir)/pkgIndex.tcl.in $(DIST_DIR)/
# A convienent helper to undo the installation just done
uninstall:
	rm -f '$(DESTDIR)$(PACKAGE_INSTALL_DIR)/@EXTENSION_TARGET@'
	rm -f '$(DESTDIR)$(PACKAGE_INSTALL_DIR)/pkgIndex.tcl'
	-rmdir '$(DESTDIR)$(PACKAGE_INSTALL_DIR)'

	# TEA files
	$(INSTALL_DATA_DIR) $(DIST_DIR)/tclconfig
	$(DIST_INSTALL_DATA) $(srcdir)/tclconfig/README.txt \
		$(srcdir)/tclconfig/tcl.m4 $(srcdir)/tclconfig/install-sh \
		$(srcdir)/license.terms $(DIST_DIR)/tclconfig/

	$(INSTALL_DATA_DIR) $(DIST_DIR)/win
	$(DIST_INSTALL_DATA) \
		$(srcdir)/win/README.txt $(srcdir)/win/*.vc \
		$(srcdir)/win/nmakehlp.c $(DIST_DIR)/win/

	list='build demos doc generic library macosx tests unix'; \
	for p in $$list; do \
# Test target, run the automated test suite
test: @EXTENSION_TARGET@
	@TCLSH_PROG@ @srcdir@/tests/all.tcl $(TESTFLAGS) -load "lappend auto_path $(shell pwd)"
	    if test -d $(srcdir)/$$p ; then \
		$(INSTALL_DATA_DIR) $(DIST_DIR)/$$p; \
		$(DIST_INSTALL_DATA_RECUR) $(srcdir)/$$p/* $(DIST_DIR)/$$p/; \
	    fi; \
	done

	(cd $(DIST_ROOT); $(COMPRESS);)
	cd $(top_builddir)
	mv $(DIST_ROOT)/$(PKG_DIR).tar.gz $(top_builddir)

#========================================================================
# End of user-definable section
#========================================================================

#========================================================================
# Don't modify the file to clean here.  Instead, set the "CLEANFILES"
# variable in configure.ac
#========================================================================
# Clean the local build directory for rebuild against the same configuration

clean:
	rm -f tls.o tlsBIO.o tlsIO.o tlsX509.o
	-test -z "$(BINARIES)" || rm -f $(BINARIES)
	rm -f @EXTENSION_TARGET@ shared-@EXTENSION_TARGET@ static-@EXTENSION_TARGET@
	rm -f shared-@EXT[email protected] shared-@EXTENSION_TARGET@.lib
	rm -f tls.tcl.h tls.tcl.h.new.1 tls.tcl.h.new.2
	-rm -f *.$(OBJEXT) core *.core
	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)

# Clean the local build directory back to what it was after unpacking the
# distribution tarball
distclean: clean
	-rm -f *.tab.c
	-rm -f $(CONFIG_CLEAN_FILES)
	rm -f config.log config.status
	rm -f dh_params.h.new dh_params.h
	rm -f Makefile pkgIndex.tcl
	rm -f tcltls.a.linkadd
	rm -f tcltls.syms

# Clean the local build directory back to only thing things that exist in
# version control system
mrproper: distclean
	rm -f @srcdir@/configure @srcdir@/config.sub @srcdir@/config.guess @srcdir@/install-sh
	rm -f @srcdir@/aclocal.m4
	rm -rf @srcdir@/autom4te.cache
	-rm -f config.cache config.log config.status
	-rm -R autom4te.cache

#========================================================================
# Install binary object libraries.  On Windows this includes both .dll and
# .lib files.  Because the .lib files are not explicitly listed anywhere,
# we need to deduce their existence from the .dll file of the same name.
# Library files go into the lib directory.
# In addition, this will generate the pkgIndex.tcl
# file in the install location (assuming it can find a usable tclsh shell)
#
# You should not have to modify this target.
#========================================================================

install-lib-binaries: binaries
	@$(INSTALL_DATA_DIR) "$(DESTDIR)$(pkglibdir)"
	@list='$(lib_BINARIES)'; for p in $$list; do \
	  if test -f $$p; then \
	    echo " $(INSTALL_LIBRARY) $$p $(DESTDIR)$(pkglibdir)/$$p"; \
	    $(INSTALL_LIBRARY) $$p "$(DESTDIR)$(pkglibdir)/$$p"; \
	    ext=`echo $$p|sed -e "s/.*\.//"`; \
	    if test "x$$ext" = "xdll"; then \
		lib=`basename $$p|sed -e 's/.[^.]*$$//'`.lib; \
		if test -f $$lib; then \
		    echo " $(INSTALL_DATA) $$lib $(DESTDIR)$(pkglibdir)/$$lib"; \
	            $(INSTALL_DATA) $$lib "$(DESTDIR)$(pkglibdir)/$$lib"; \
		fi; \
	    fi; \
	  fi; \
	done
	@list='$(PKG_TCL_SOURCES)'; for p in $$list; do \
	  if test -f $(srcdir)/$$p; then \
	    destp=`basename $$p`; \
	    echo " Install $$destp $(DESTDIR)$(pkglibdir)/$$destp"; \
	    $(INSTALL_DATA) $(srcdir)/$$p "$(DESTDIR)$(pkglibdir)/$$destp"; \
	  fi; \
	done
	@if test "x$(SHARED_BUILD)" = "x1"; then \
	    echo " Install pkgIndex.tcl $(DESTDIR)$(pkglibdir)"; \
	    $(INSTALL_DATA) pkgIndex.tcl "$(DESTDIR)$(pkglibdir)"; \
	fi

#========================================================================
# Install binary executables (e.g. .exe files and dependent .dll files)
# This is for files that must go in the bin directory (located next to
# wish and tclsh), like dependent .dll files on Windows.
#
# You should not have to modify this target, except to define bin_BINARIES
# above if necessary.
#========================================================================

install-bin-binaries: binaries
	@$(INSTALL_DATA_DIR) "$(DESTDIR)$(bindir)"
	@list='$(bin_BINARIES)'; for p in $$list; do \
	  if test -f $$p; then \
	    echo " $(INSTALL_PROGRAM) $$p $(DESTDIR)$(bindir)/$$p"; \
	    $(INSTALL_PROGRAM) $$p "$(DESTDIR)$(bindir)/$$p"; \
	  fi; \
	done

Makefile: $(srcdir)/Makefile.in  $(top_builddir)/config.status
	cd $(top_builddir) \
	  && CONFIG_FILES=$@ CONFIG_HEADERS= $(SHELL) ./config.status

uninstall-binaries:
	list='$(lib_BINARIES)'; for p in $$list; do \
	  rm -f "$(DESTDIR)$(pkglibdir)/$$p"; \
	done
	list='$(PKG_TCL_SOURCES)'; for p in $$list; do \
	  p=`basename $$p`; \
	  rm -f "$(DESTDIR)$(pkglibdir)/$$p"; \
	done
	list='$(bin_BINARIES)'; for p in $$list; do \
	  rm -f "$(DESTDIR)$(bindir)/$$p"; \
	done

.PHONY: all binaries clean depend distclean doc install libraries test
.PHONY: gdb gdb-test valgrind valgrindshell
.PHONY: all install uninstall clean distclean mrproper test

# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

Modified README.txt from [4d858d5c33] to [ac96d5cec3].










































































































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Tool Command Language (TCL) Transport Layer Security (TLS) Extension

Intro
=====

This package provides an extension which implements Secure Socket Layer (SSL)
and Transport Layer Security (TLS) over Transmission Control Protocol (TCP)
network communication channels. It utilizes either the OpenSSL or LibreSSL
software library.
 
Version 2.0 also provides a cryptography library providing TCL scripts access
to the crypto capabilities of the OpenSSL library.


Description
===========

This extension works by creating a layered TCL Channel on top of an existing
bi-directional channel created by the TLS socket command. All existing socket
functionality is supported, in addition to several new options. Both client
and server modes are supported.


Documentation
=============

See the doc directory for the full usage documentation.


Compatibility
=============

This package requires TCL 8.5 or later.

This package is compatible with:
- OpenSSL v1.1.1 or later. See (http://www.openssl.org/
- LibreSSL (TBD version)


Installation
============

This package uses the Tcl Extension Architecture (TEA) to build and install on
any supported Unix, Mac, or MS Windows system. Either the OpenSSL or LibreSSL
software libraries must be built and available prior to building TCL TLS.

UNIX and Linux
--------------

The standard TEA config, make and install process is supported.

	$ cd tcltls
	$ ./configure --enable-64bit --enable-deterministic --with-builtin-dh-params-size=2048
	$ make
	$ make test
	$ make install

The supported configure options include all of the standard TEA configure script
options, plus:

  --disable-tls1          disable TLS1 protocol
  --disable-tls1_1        disable TLS1.1 protocol
  --disable-tls1_2        disable TLS1.2 protocol
  --disable-tls1_3        disable TLS1.3 protocol
  --enable-deterministic  enable deterministic DH parameters
  --enable-ssl-fastpath   enable using the underlying file descriptor for talking directly to the SSL library
  --enable-hardening      enable hardening attempts
  --enable-static-ssl     enable static linking to the SSL library
  --with-builtin-dh-params-size=<bits>	specify the size of the built-in, precomputed, DH params

If either TCL or OpenSSL are installed in non-standard locations, the following
configure options are available. For all options, see ./configure --help.

  --with-tcl=<dir>			path to where tclCondig.sh file resides
  --with-tclinclude=<dir>		directory containing the public Tcl header files
  --with-openssl-dir=<dir>		path to root directory of OpenSSL or LibreSSL installation
  --with-openssl-includedir=<dir>	path to include directory of OpenSSL or LibreSSL installation
  --with-openssl-libdir=<dir>		path to lib directory of OpenSSL or LibreSSL installation
  --with-openssl-pkgconfig=<dir>	path to root directory of OpenSSL or LibreSSL pkgconfigdir


MacOS
-----

The standard TEA installation process is supported. Use the --with-tcl option
to set the TCL path if the ActiveState or other non-Apple version of TCL is to
be used.

	$ cd tcltls
	$ ./configure --with-tcl=/Library/Frameworks/Tcl.framework/
	$ make
	$ make test
	$ make install


Windows
-------

If installing with MinGW, use the TEA build process. If using MS Visual C
(MSVC), see the win/README.txt file for the installation instructions.


Copyrights
==========

Original TLS Copyright (C) 1997-2000 Matt Newman <[email protected]>
TLS 1.4.1    Copyright (C) 2000 Ajuba Solutions
TLS 1.6      Copyright (C) 2008 ActiveState Software Inc.
TLS 1.7      Copyright (C) 2016 Matt Newman, Ajuba Solutions, ActiveState
                                Software Inc, Roy Keene <[email protected]>

TLS 1.9-2.0  Copyright (C) 2023 Brian O'Hagan
TLS (aka SSL) Channel - can be layered on any bi-directional Tcl_Channel.

Both client and server-side sockets are possible, and this code should work
on any platform as it uses a generic mechanism for layering on SSL and Tcl.

Acknowledgments
Full filevent sematics should also be intact - see tests directory for
blocking and non-blocking examples.

===============
The current release is TLS 1.6, with binaries built against OpenSSL 0.9.8g.
For best security and function, always compile from source with the latest
official release of OpenSSL (http://www.openssl.org/).

TLS 1.7 and newer require Tcl 8.4.0+, older versions may be used if older
versions of Tcl need to be used.

TclTLS requires OpenSSL or LibreSSL in order to be compiled and function.

Non-exclusive credits for TLS are:
   Original work: Matt Newman @ Novadigm
   Updates: Jeff Hobbs @ ActiveState
   Tcl Channel mechanism: Andreas Kupries
   Impetus/Related work: tclSSL (Colin McCormack, Shared Technology)
                         SSLtcl (Peter Antman)

License
=======

This code is licensed under the same terms as the Tcl Core.

Added acinclude.m4 version [a920d53daa].






















































































































































































































































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#
# Include the TEA standard macro set
#

builtin(include,tclconfig/tcl.m4)

#
# Add here whatever m4 macros you want to define for your package
#

AC_DEFUN([TCLTLS_SSL_OPENSSL], [
	AC_CHECK_TOOL([PKG_CONFIG], [pkg-config])

	dnl Disable support for TLS 1.0 protocol
	AC_ARG_ENABLE([tls1], AS_HELP_STRING([--disable-tls1], [disable TLS1 protocol]), [
		if test "${enableval}" = "no"; then
			AC_DEFINE([NO_TLS1], [1], [Disable TLS1 protocol])
			AC_MSG_CHECKING([for disable TLS1 protocol])
			AC_MSG_RESULT('yes')
		fi
	])

	dnl Disable support for TLS 1.1 protocol
	AC_ARG_ENABLE([tls1_1], AS_HELP_STRING([--disable-tls1_1], [disable TLS1.1 protocol]), [
		if test "${enableval}" = "no"; then
			AC_DEFINE([NO_TLS1_1], [1], [Disable TLS1.1 protocol])
			AC_MSG_CHECKING([for disable TLS1.1 protocol])
			AC_MSG_RESULT('yes')
		fi
	])

	dnl Disable support for TLS 1.2 protocol
	AC_ARG_ENABLE([tls1_2], AS_HELP_STRING([--disable-tls1_2], [disable TLS1.2 protocol]), [
		if test "${enableval}" = "no"; then
			AC_DEFINE([NO_TLS1_2], [1], [Disable TLS1.2 protocol])
			AC_MSG_CHECKING([for disable TLS1.2 protocol])
			AC_MSG_RESULT('yes')
		fi
	])

	dnl Disable support for TLS 1.3 protocol
	AC_ARG_ENABLE([tls1_3], AS_HELP_STRING([--disable-tls1_3], [disable TLS1.3 protocol]), [
		if test "${enableval}" = "no"; then
			AC_DEFINE([NO_TLS1_3], [1], [Disable TLS1.3 protocol])
			AC_MSG_CHECKING([for disable TLS1.3 protocol])
			AC_MSG_RESULT('yes')
		fi
	])


	dnl Enable support for building the same Diffie–Hellman parameters each time
	AC_ARG_ENABLE([deterministic], AS_HELP_STRING([--enable-deterministic], [enable deterministic DH parameters]), [
		tcltls_deterministic="$enableval"
	], [
		tcltls_deterministic='no'
	])
	if test "$tcltls_deterministic" = 'yes'; then
		GEN_DH_PARAMS_ARGS='fallback'
	else
		GEN_DH_PARAMS_ARGS=''
	fi

	dnl Enable support for specifying pre-computed DH params size
	AC_ARG_WITH([builtin-dh-params-size], AS_HELP_STRING([--with-builtin-dh-params-size=<bits>],
		[specify the size in bits of the built-in, precomputed, DH params]), [
		AS_CASE([$withval],[2048|4096|8192],,[AC_MSG_ERROR([Unsupported DH params size: $withval])])
		GEN_DH_PARAMS_ARGS="${GEN_DH_PARAMS_ARGS} bits=$withval"
	])
	AC_SUBST(GEN_DH_PARAMS_ARGS)
	AC_MSG_CHECKING([for DH params])
	AC_MSG_RESULT([$GEN_DH_PARAMS_ARGS])


	dnl Determine if we have been asked to use a fast path if possible
	AC_ARG_ENABLE([ssl-fastpath], AS_HELP_STRING([--enable-ssl-fastpath],
		[enable using the underlying file descriptor for talking directly to the SSL library]), [
		tcltls_ssl_fastpath="$enableval"
	], [
		tcltls_ssl_fastpath='no'
	])
	if test "$tcltls_ssl_fastpath" = 'yes'; then
		AC_DEFINE(TCLTLS_SSL_USE_FASTPATH, [1], [Enable SSL library direct use of the underlying file descriptor])
	fi
	AC_MSG_CHECKING([for fast path])
	AC_MSG_RESULT([$tcltls_ssl_fastpath])


	dnl Enable hardening
	AC_ARG_ENABLE([hardening], AS_HELP_STRING([--enable-hardening], [enable hardening attempts]), [
		tcltls_enable_hardening="$enableval"
	], [
		tcltls_enable_hardening='yes'
	])
	if test "$tcltls_enable_hardening" = 'yes'; then
		if test "$GCC" = 'yes' -o "$CC" = 'clang'; then
			TEA_ADD_CFLAGS([-fstack-protector-all])
			TEA_ADD_CFLAGS([-fno-strict-overflow])
			AC_DEFINE([_FORTIFY_SOURCE], [2], [Enable fortification])
		fi
	fi
	AC_MSG_CHECKING([for enable hardening])
	AC_MSG_RESULT([$tcltls_enable_hardening])


	dnl Determine if we have been asked to statically link to the SSL library
	AC_ARG_ENABLE([static-ssl], AS_HELP_STRING([--enable-static-ssl], [enable static linking to the SSL library]), [
		TCLEXT_TLS_STATIC_SSL="$enableval"
	], [
		TCLEXT_TLS_STATIC_SSL='no'
	])
	AC_MSG_CHECKING([for static linking of openSSL libraries])
	AC_MSG_RESULT([$TCLEXT_TLS_STATIC_SSL])


	dnl Set SSL files root path
	AC_ARG_WITH([openssl-dir],
		AS_HELP_STRING([--with-openssl-dir=<dir>],
			[path to root directory of OpenSSL or LibreSSL installation]
		), [
			openssldir="$withval"
		], [
			openssldir=''
		]
	)

	dnl Set SSL include files path
	AC_ARG_WITH([openssl-includedir],
		AS_HELP_STRING([--with-openssl-includedir=<dir>],
			[path to include directory of OpenSSL or LibreSSL installation]
		), [
			opensslincludedir="$withval"
		], [
			if test -n "$openssldir"; then
				opensslincludedir="$openssldir/include/openssl"
			else
				opensslincludedir=''
			fi
		]
	)
	AC_MSG_CHECKING([for OpenSSL include directory])
	AC_MSG_RESULT($opensslincludedir)

	dnl Set SSL include vars
	if test -n "$opensslincludedir"; then
		if test -f "$opensslincludedir/ssl.h"; then
			TCLTLS_SSL_CFLAGS="-I$opensslincludedir"
			TCLTLS_SSL_INCLUDES="-I$opensslincludedir"
		else
			AC_MSG_ERROR([Unable to locate ssl.h])
		fi
	else
		TCLTLS_SSL_CFLAGS="-I$(includedir)/openssl"
		TCLTLS_SSL_INCLUDES="-I$(includedir)/openssl"
	fi

	dnl Set SSL lib files path
	AC_ARG_WITH([openssl-libdir],
		AS_HELP_STRING([--with-openssl-libdir=<dir>],
			[path to lib directory of OpenSSL or LibreSSL installation]
		), [
			openssllibdir="$withval"
		], [
			if test -n "$openssldir"; then
				if test "$do64bit" == 'yes'; then
					openssllibdir="$openssldir/lib64"
				else
					openssllibdir="$openssldir/lib"
				fi
			else
				openssllibdir=''
			fi
		]
	)
	AC_MSG_CHECKING([for OpenSSL lib directory])
	AC_MSG_RESULT($openssllibdir)

	dnl Set SSL lib vars
	if test -n "$openssllibdir"; then
		if test -f "$openssllibdir/libssl${SHLIB_SUFFIX}"; then
			if test "${TCLEXT_TLS_STATIC_SSL}" == 'no'; then
				TCLTLS_SSL_LIBS="-L$openssllibdir -lcrypto -lssl"
			else
				# Linux and Solaris
				TCLTLS_SSL_LIBS="-Wl,-Bstatic `$PKG_CONFIG --static --libs crypto ssl` -Wl,-Bdynamic"
				# HPUX
				# -Wl,-a,archive ... -Wl,-a,shared_archive
			fi
		else
			AC_MSG_ERROR([Unable to locate libssl${SHLIB_SUFFIX}])
		fi
	else
		TCLTLS_SSL_LIBS="-lcrypto -lssl"
	fi


	dnl Include config variables in --help list and make available to be substituted via AC_SUBST.
	AC_ARG_VAR([TCLTLS_SSL_CFLAGS], [C compiler flags for OpenSSL or LibreSSL])
	AC_ARG_VAR([TCLTLS_SSL_INCLUDES], [C compiler include paths for OpenSSL or LibreSSL])
	AC_ARG_VAR([TCLTLS_SSL_LIBS], [libraries to pass to the linker for OpenSSL or LibreSSL])


	dnl Set location of pkgconfig files
	AC_ARG_WITH([openssl-pkgconfig],
		AS_HELP_STRING([--with-openssl-pkgconfig=<dir>],
			[path to root directory of OpenSSL or LibreSSL pkgconfigdir]
		), [
			opensslpkgconfigdir="$withval"
		], [
			opensslpkgconfigdir=''
		]
	)
	AC_MSG_CHECKING([for OpenSSL pkgconfig])
	AC_MSG_RESULT($opensslpkgconfigdir)


	# Use Package Config tool to get config
	pkgConfigExtraArgs=''
	if test "${SHARED_BUILD}" == 0 -o "$TCLEXT_TLS_STATIC_SSL" = 'yes'; then
		pkgConfigExtraArgs='--static'
	fi

	dnl Use pkg-config to find the libraries
	if test -n "${PKG_CONFIG}"; then
		dnl Temporarily update PKG_CONFIG_PATH
		PKG_CONFIG_PATH_SAVE="${PKG_CONFIG_PATH}"
		if test -n "${opensslpkgconfigdir}"; then
			if ! test -f "${opensslpkgconfigdir}/openssl.pc"; then
				AC_MSG_ERROR([Unable to locate ${opensslpkgconfigdir}/openssl.pc])
			fi

			PKG_CONFIG_PATH="${opensslpkgconfigdir}${PATH_SEPARATOR}${PKG_CONFIG_PATH}"
			export PKG_CONFIG_PATH
		fi
		if test -z "$TCLTLS_SSL_LIBS"; then
			TCLTLS_SSL_LIBS="`"${PKG_CONFIG}" openssl --libs $pkgConfigExtraArgs`" || AC_MSG_ERROR([Unable to get OpenSSL Configuration])
		fi
		if test -z "$TCLTLS_SSL_CFLAGS"; then
			TCLTLS_SSL_CFLAGS="`"${PKG_CONFIG}" openssl --cflags-only-other $pkgConfigExtraArgs`" || AC_MSG_ERROR([Unable to get OpenSSL Configuration])
		fi
		if test -z "$TCLTLS_SSL_INCLUDES"; then
			TCLTLS_SSL_INCLUDES="`"${PKG_CONFIG}" openssl --cflags-only-I $pkgConfigExtraArgs`" || AC_MSG_ERROR([Unable to get OpenSSL Configuration])
		fi
		PKG_CONFIG_PATH="${PKG_CONFIG_PATH_SAVE}"
	fi
])

Added aclocal.m4 version [aa2bfd12c3].






































































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# generated automatically by aclocal 1.16.5 -*- Autoconf -*-

# Copyright (C) 1996-2021 Free Software Foundation, Inc.

# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.

m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
# ===========================================================================
#  https://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
#
# DESCRIPTION
#
#   Check whether the given FLAG works with the current language's compiler
#   or gives an error.  (Warnings, however, are ignored)
#
#   ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
#   success/failure.
#
#   If EXTRA-FLAGS is defined, it is added to the current language's default
#   flags (e.g. CFLAGS) when the check is done.  The check is thus made with
#   the flags: "CFLAGS EXTRA-FLAGS FLAG".  This can for example be used to
#   force the compiler to issue an error when a bad flag is given.
#
#   INPUT gives an alternative input source to AC_COMPILE_IFELSE.
#
#   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
#   macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
#
# LICENSE
#
#   Copyright (c) 2008 Guido U. Draheim <[email protected]>
#   Copyright (c) 2011 Maarten Bosmans <[email protected]>
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved.  This file is offered as-is, without any
#   warranty.

#serial 6

AC_DEFUN([AX_CHECK_COMPILE_FLAG],
[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
  ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
  _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
  AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
    [AS_VAR_SET(CACHEVAR,[yes])],
    [AS_VAR_SET(CACHEVAR,[no])])
  _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
AS_VAR_IF(CACHEVAR,yes,
  [m4_default([$2], :)],
  [m4_default([$3], :)])
AS_VAR_POPDEF([CACHEVAR])dnl
])dnl AX_CHECK_COMPILE_FLAGS

m4_include([acinclude.m4])

Deleted aclocal/ax_check_compile_flag.m4 version [0974cae407].

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# ===========================================================================
#  https://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
#
# DESCRIPTION
#
#   Check whether the given FLAG works with the current language's compiler
#   or gives an error.  (Warnings, however, are ignored)
#
#   ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
#   success/failure.
#
#   If EXTRA-FLAGS is defined, it is added to the current language's default
#   flags (e.g. CFLAGS) when the check is done.  The check is thus made with
#   the flags: "CFLAGS EXTRA-FLAGS FLAG".  This can for example be used to
#   force the compiler to issue an error when a bad flag is given.
#
#   INPUT gives an alternative input source to AC_LINK_IFELSE.
#
#   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
#   macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
#
# LICENSE
#
#   Copyright (c) 2008 Guido U. Draheim <[email protected]>
#   Copyright (c) 2011 Maarten Bosmans <[email protected]>
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved.  This file is offered as-is, without any
#   warranty.

#serial 6

AC_DEFUN([AX_CHECK_COMPILE_FLAG],
[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
  ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
  _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
  AC_LINK_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
    [AS_VAR_SET(CACHEVAR,[yes])],
    [AS_VAR_SET(CACHEVAR,[no])])
  _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
AS_VAR_IF(CACHEVAR,yes,
  [m4_default([$2], :)],
  [m4_default([$3], :)])
AS_VAR_POPDEF([CACHEVAR])dnl
])dnl AX_CHECK_COMPILE_FLAGS

Deleted aclocal/shobj.m4 version [2123b62392].

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dnl Usage:
dnl    DC_TEST_SHOBJFLAGS(shobjflags, shobjldflags, action-if-not-found)
dnl
AC_DEFUN([DC_TEST_SHOBJFLAGS], [
  AC_SUBST(SHOBJFLAGS)
  AC_SUBST(SHOBJCPPFLAGS)
  AC_SUBST(SHOBJLDFLAGS)

  OLD_LDFLAGS="$LDFLAGS"
  OLD_CFLAGS="$CFLAGS"
  OLD_CPPFLAGS="$CPPFLAGS"

  SHOBJFLAGS=""
  SHOBJCPPFLAGS=""
  SHOBJLDFLAGS=""

  CFLAGS="$OLD_CFLAGS $1"
  CPPFLAGS="$OLD_CPPFLAGS $2"
  LDFLAGS="$OLD_LDFLAGS $3"

  AC_TRY_LINK([#include <stdio.h>
int unrestst(void);], [ printf("okay\n"); unrestst(); return(0); ], [ SHOBJFLAGS="$1"; SHOBJCPPFLAGS="$2"; SHOBJLDFLAGS="$3" ], [
    LDFLAGS="$OLD_LDFLAGS"
    CFLAGS="$OLD_CFLAGS"
    CPPFLAGS="$OLD_CPPFLAGS"
    $4
  ])

  LDFLAGS="$OLD_LDFLAGS"
  CFLAGS="$OLD_CFLAGS"
  CPPFLAGS="$OLD_CPPFLAGS"
])

AC_DEFUN([DC_GET_SHOBJFLAGS], [
  AC_SUBST(SHOBJFLAGS)
  AC_SUBST(SHOBJCPPFLAGS)
  AC_SUBST(SHOBJLDFLAGS)

  DC_CHK_OS_INFO

  AC_MSG_CHECKING(how to create shared objects)

  if test -z "$SHOBJFLAGS" -a -z "$SHOBJLDFLAGS" -a -z "$SHOBJCPPFLAGS"; then
    DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-shared], [
      DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-shared -mimpure-text], [
        DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-shared -rdynamic -Wl,-G,-z,textoff], [
          DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-shared -Wl,-G], [
            DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-shared -dynamiclib -flat_namespace -undefined suppress -bind_at_load], [
              DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-dynamiclib -flat_namespace -undefined suppress -bind_at_load], [
                DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-Wl,-dynamiclib -Wl,-flat_namespace -Wl,-undefined,suppress -Wl,-bind_at_load], [
                  DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-dynamiclib -flat_namespace -undefined suppress], [
                    DC_TEST_SHOBJFLAGS([-fPIC], [-DPIC], [-dynamiclib], [
                      AC_MSG_RESULT(cant)
                      AC_MSG_ERROR([We are unable to make shared objects.])
                    ])
                  ])
                ])
              ])
            ])
          ])
        ])
      ])
    ])
  fi

  AC_MSG_RESULT($SHOBJCPPFLAGS $SHOBJFLAGS $SHOBJLDFLAGS)

  DC_SYNC_SHLIBOBJS
])

AC_DEFUN([DC_SYNC_SHLIBOBJS], [
  AC_SUBST(SHLIBOBJS)
  SHLIBOBJS=""
  for obj in $LIB@&t@OBJS; do
    SHLIBOBJS="$SHLIBOBJS `echo $obj | sed 's/\.o$/_shr.o/g'`"
  done
])

AC_DEFUN([DC_SYNC_RPATH], [
	AC_ARG_ENABLE([rpath], AS_HELP_STRING([--disable-rpath], [disable setting of rpath]), [
		if test "$enableval" = 'no'; then
			set_rpath='no'
		else
			set_rpath='yes'
		fi
	], [
		if test "$cross_compiling" = 'yes'; then
			set_rpath='no'
		else
			ifelse($1, [], [
				set_rpath='yes'
			], [
				set_rpath='$1'
			])
		fi
	])

	if test "$set_rpath" = 'yes'; then
		OLD_LDFLAGS="$LDFLAGS"

		AC_CACHE_CHECK([how to set rpath], [rsk_cv_link_set_rpath], [
			AC_LANG_PUSH(C)
			for tryrpath in "-Wl,-rpath" "-Wl,--rpath" "-Wl,-R"; do
				LDFLAGS="$OLD_LDFLAGS $tryrpath -Wl,/tmp"
				AC_LINK_IFELSE([AC_LANG_PROGRAM([], [ return(0); ])], [
					rsk_cv_link_set_rpath="$tryrpath"
					break
				])
			done
			AC_LANG_POP(C)
			unset tryrpath
		])

		LDFLAGS="$OLD_LDFLAGS"
		unset OLD_LDFLAGS

		if test -n "$rsk_cv_link_set_rpath"; then
			ADDLDFLAGS=""
			for opt in $LDFLAGS $LIBS; do
				if echo "$opt" | grep '^-L' >/dev/null; then
					rpathdir="`echo "$opt" | sed 's@^-L *@@'`"
					ADDLDFLAGS="$ADDLDFLAGS $rsk_cv_link_set_rpath -Wl,$rpathdir"
				fi
			done
			unset opt

			LDFLAGS="$LDFLAGS $ADDLDFLAGS"

			unset ADDLDFLAGS
		fi
	fi
])

AC_DEFUN([DC_CHK_OS_INFO], [
	AC_CANONICAL_HOST
	AC_SUBST(SHOBJEXT)
	AC_SUBST(SHOBJFLAGS)
	AC_SUBST(SHOBJCPPFLAGS)
	AC_SUBST(SHOBJLDFLAGS)
	AC_SUBST(CFLAGS)
	AC_SUBST(CPPFLAGS)
	AC_SUBST(AREXT)

	if test "$dc_cv_dc_chk_os_info_called" != '1'; then
		dc_cv_dc_chk_os_info_called='1'

		AC_MSG_CHECKING(host operating system)
		AC_MSG_RESULT($host_os)

		SHOBJEXT="so"
		AREXT="a"

		case $host_os in
			darwin*)
				SHOBJEXT="dylib"
				;;
			hpux*)
				case "$host_cpu" in
					ia64)
						SHOBJEXT="so"
						;;
					*)
						SHOBJEXT="sl"
						;;
				esac
				;;
			mingw32|mingw32msvc*)
				SHOBJEXT="dll"
				CFLAGS="$CFLAGS -mms-bitfields"
				CPPFLAGS="$CPPFLAGS -mms-bitfields"
				SHOBJCPPFLAGS="-DPIC"
				SHOBJLDFLAGS='-shared -Wl,--dll -Wl,--enable-auto-image-base -Wl,--output-def,$[@].def,--out-implib,$[@].a'
				;;
			msvc)
				SHOBJEXT="dll"
				AREXT='lib'
				CFLAGS="$CFLAGS -nologo"
				SHOBJCPPFLAGS='-DPIC'
				SHOBJLDFLAGS='/LD /LINK /NODEFAULTLIB:MSVCRT'
				;;
			cygwin*)
				SHOBJEXT="dll"
				SHOBJFLAGS="-fPIC"
				SHOBJCPPFLAGS="-DPIC"
				CFLAGS="$CFLAGS -mms-bitfields"
				CPPFLAGS="$CPPFLAGS -mms-bitfields"
				SHOBJLDFLAGS='-shared -Wl,--enable-auto-image-base -Wl,--output-def,$[@].def,--out-implib,$[@].a'
				;;
		esac
	fi
])

AC_DEFUN([SHOBJ_SET_SONAME], [
	SAVE_LDFLAGS="$LDFLAGS"

	AC_MSG_CHECKING([how to specify soname])

	for try in "-Wl,--soname,$1" "Wl,-install_name,$1" '__fail__'; do
		LDFLAGS="$SAVE_LDFLAGS"

		if test "${try}" = '__fail__'; then
			AC_MSG_RESULT([can't])

			break
		fi

		LDFLAGS="${LDFLAGS} ${try}"
		AC_TRY_LINK([void TestTest(void) { return; }], [], [
			LDFLAGS="${SAVE_LDFLAGS}"
			SHOBJLDFLAGS="${SHOBJLDFLAGS} ${try}"

			AC_MSG_RESULT([$try])

			break
		])
	done

	AC_SUBST(SHOBJLDFLAGS)
])

dnl $1 = Description to show user
dnl $2 = Libraries to link to
dnl $3 = Variable to update (optional; default LIBS)
dnl $4 = Action to run if found
dnl $5 = Action to run if not found
AC_DEFUN([SHOBJ_DO_STATIC_LINK_LIB], [
        ifelse($3, [], [
                define([VAR_TO_UPDATE], [LIBS])
        ], [
                define([VAR_TO_UPDATE], [$3])
        ])  


	AC_MSG_CHECKING([for how to statically link to $1])

	trylink_ADD_LDFLAGS=''
	for arg in $VAR_TO_UPDATE; do
		case "${arg}" in
			-L*)
				trylink_ADD_LDFLAGS="${arg}"
				;;
		esac
	done

	SAVELIBS="$LIBS"
	staticlib=""
	found="0"
	dnl HP/UX uses -Wl,-a,archive ... -Wl,-a,shared_archive
	dnl Linux and Solaris us -Wl,-Bstatic ... -Wl,-Bdynamic
	AC_LANG_PUSH([C])
	for trylink in "-Wl,-a,archive $2 -Wl,-a,shared_archive" "-Wl,-Bstatic $2 -Wl,-Bdynamic" "$2"; do
		if echo " ${LDFLAGS} " | grep ' -static ' >/dev/null; then
			if test "${trylink}" != "$2"; then
				continue
			fi
		fi

		LIBS="${SAVELIBS} ${trylink_ADD_LDFLAGS} ${trylink}"

		AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [
			staticlib="${trylink}"
			found="1"

			break
		])
	done
	AC_LANG_POP([C])
	LIBS="${SAVELIBS}"

	if test "${found}" = "1"; then
		new_RESULT=''
		SAVERESULT="$VAR_TO_UPDATE"
		for lib in ${SAVERESULT}; do
			addlib='1'
			for removelib in $2; do
				if test "${lib}" = "${removelib}"; then
					addlib='0'
					break
				fi
			done

			if test "$addlib" = '1'; then
				new_RESULT="${new_RESULT} ${lib}"
			fi
		done
		VAR_TO_UPDATE="${new_RESULT} ${staticlib}"

		AC_MSG_RESULT([${staticlib}])

		$4
	else
		AC_MSG_RESULT([cant])

		$5
	fi
])

Deleted aclocal/tcl.m4 version [0d8f54c2f7].

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dnl Tcl M4 Routines

dnl Find a runnable Tcl
AC_DEFUN([TCLEXT_FIND_TCLSH_PROG], [
	AC_CACHE_CHECK([for runnable tclsh], [tcl_cv_tclsh_native_path], [
		dnl Try to find a runnable tclsh
		if test -z "$TCLCONFIGPATH"; then
			TCLCONFIGPATH=/dev/null/null
		fi

		for try_tclsh in "$TCLSH_NATIVE" "$TCLCONFIGPATH/../bin/tclsh" \
		                 "$TCLCONFIGPATH/../bin/tclsh8.6" \
		                 "$TCLCONFIGPATH/../bin/tclsh8.5" \
		                 "$TCLCONFIGPATH/../bin/tclsh8.4" \
		                 `which tclsh 2>/dev/null` \
		                 `which tclsh8.6 2>/dev/null` \
		                 `which tclsh8.5 2>/dev/null` \
		                 `which tclsh8.4 2>/dev/null` \
		                 tclsh; do
			if test -z "$try_tclsh"; then
				continue
			fi
			if test -x "$try_tclsh"; then
				if echo 'exit 0' | "$try_tclsh" 2>/dev/null >/dev/null; then
					tcl_cv_tclsh_native_path="$try_tclsh"

					break
				fi
			fi
		done

		if test "$TCLCONFIGPATH" = '/dev/null/null'; then
			unset TCLCONFIGPATH
		fi
	])

	TCLSH_PROG="${tcl_cv_tclsh_native_path}"
	AC_SUBST(TCLSH_PROG)
])


dnl Must call AC_CANONICAL_HOST  before calling us
AC_DEFUN([TCLEXT_FIND_TCLCONFIG], [

	TCLCONFIGPATH=""
	AC_ARG_WITH([tcl], AS_HELP_STRING([--with-tcl], [directory containing tcl configuration (tclConfig.sh)]), [
		if test "x$withval" = "xno"; then
			AC_MSG_ERROR([cant build without tcl])
		fi

		TCLCONFIGPATH="$withval"
	], [
		if test "$cross_compiling" = 'no'; then
			TCLEXT_FIND_TCLSH_PROG
			tclConfigCheckDir0="`echo 'puts [[tcl::pkgconfig get libdir,runtime]]' | "$TCLSH_PROG" 2>/dev/null`"
			tclConfigCheckDir1="`echo 'puts [[tcl::pkgconfig get scriptdir,runtime]]' | "$TCLSH_PROG" 2>/dev/null`"
		else
			tclConfigCheckDir0=/dev/null/null
			tclConfigCheckDir1=/dev/null/null
		fi

		if test "$cross_compiling" = 'no'; then
			dirs="/usr/$host_alias/lib /usr/lib /usr/lib64 /usr/local/lib /usr/local/lib64"
		else
			dirs=''
		fi

		for dir in "$tclConfigCheckDir0" "$tclConfigCheckDir1" $dirs; do
			if test -f "$dir/tclConfig.sh"; then
				TCLCONFIGPATH="$dir"

				break
			fi
		done
	])

	AC_MSG_CHECKING([for path to tclConfig.sh])

	if test -z "$TCLCONFIGPATH"; then
		AC_MSG_ERROR([unable to locate tclConfig.sh.  Try --with-tcl.])
	fi

	AC_SUBST(TCLCONFIGPATH)

	AC_MSG_RESULT([$TCLCONFIGPATH])

	dnl Find Tcl if we haven't already
	if test -z "$TCLSH_PROG"; then
		TCLEXT_FIND_TCLSH_PROG
	fi
])

dnl Must define TCLCONFIGPATH before calling us (i.e., by TCLEXT_FIND_TCLCONFIG)
AC_DEFUN([TCLEXT_LOAD_TCLCONFIG], [
	AC_MSG_CHECKING([for working tclConfig.sh])

	if test -f "$TCLCONFIGPATH/tclConfig.sh"; then
		. "$TCLCONFIGPATH/tclConfig.sh"
	else
		AC_MSG_ERROR([unable to load tclConfig.sh])
	fi


	AC_MSG_RESULT([found])
])

AC_DEFUN([TCLEXT_INIT], [
	AC_CANONICAL_HOST

	TCLEXT_FIND_TCLCONFIG
	TCLEXT_LOAD_TCLCONFIG

	AC_DEFINE_UNQUOTED([MODULE_SCOPE], [static], [Define how to declare a function should only be visible to the current module])

	TCLEXT_BUILD='shared'
	AC_ARG_ENABLE([shared], AS_HELP_STRING([--disable-shared], [disable the shared build (same as --enable-static)]), [
		if test "$enableval" = "no"; then
			TCLEXT_BUILD='static'
			TCL_SUPPORTS_STUBS=0
		fi
	])

	AC_ARG_ENABLE([static], AS_HELP_STRING([--enable-static], [enable a static build]), [
		if test "$enableval" = "yes"; then
			TCLEXT_BUILD='static'
			TCL_SUPPORTS_STUBS=0
		fi
	])

	AC_ARG_ENABLE([stubs], AS_HELP_STRING([--disable-stubs], [disable use of Tcl stubs]), [
		if test "$enableval" = "no"; then
			TCL_SUPPORTS_STUBS=0
		else
			TCL_SUPPORTS_STUBS=1
		fi
	])

	if test "$TCL_SUPPORTS_STUBS" = "1"; then
		AC_DEFINE([USE_TCL_STUBS], [1], [Define if you are using the Tcl Stubs Mechanism])

		TCL_STUB_LIB_SPEC="`eval echo "${TCL_STUB_LIB_SPEC}"`"
		LIBS="${LIBS} ${TCL_STUB_LIB_SPEC}"
	else
		TCL_LIB_SPEC="`eval echo "${TCL_LIB_SPEC}"`"
		LIBS="${LIBS} ${TCL_LIB_SPEC}"
	fi

	TCL_INCLUDE_SPEC="`eval echo "${TCL_INCLUDE_SPEC}"`"

	CFLAGS="${CFLAGS} ${TCL_INCLUDE_SPEC}"
	CPPFLAGS="${CPPFLAGS} ${TCL_INCLUDE_SPEC}"
	TCL_DEFS_TCL_ONLY=`(
		eval "set -- ${TCL_DEFS}"
		for flag in "[$]@"; do
			case "${flag}" in
				-DTCL_*)
					echo "${flag}" | sed "s/'/'\\''/g" | sed "s@^@'@;s@"'[$]'"@'@" | tr $'\n' ' '
					;;
			esac
		done
	)`
	TCL_DEFS="${TCL_DEFS_TCL_ONLY}"
	AC_SUBST(TCL_DEFS)

	dnl Needed for package installation
	if test "$prefix" = 'NONE' -a "$exec_prefix" = 'NONE' -a "${libdir}" = '${exec_prefix}/lib'; then
		TCL_PACKAGE_PATH="`echo "${TCL_PACKAGE_PATH}" | sed 's@  *$''@@' | awk '{ print [$]1 }'`"
	else
		TCL_PACKAGE_PATH='${libdir}'
	fi
	AC_SUBST(TCL_PACKAGE_PATH)

	AC_SUBST(LIBS)
])

Deleted aclocal/tcltls_openssl.m4 version [3644ca7551].

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dnl $1 = Name of variable
dnl $2 = Name of function to check for
dnl $3 = Name of protocol
dnl $4 = Name of CPP macro to define
dnl $5 = Name of CPP macro to check for instead of a function
AC_DEFUN([TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER], [
	dnl Determine if particular SSL version is enabled
	if test "[$]$1" = "true" -o "[$]$1" = "force"; then
		proto_check='true'
		ifelse($5,, [
			AC_CHECK_FUNC($2,, [
				proto_check='false'
			])
		], [
			AC_LANG_PUSH(C)
			AC_MSG_CHECKING([for $3 protocol support])
			AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <openssl/ssl.h>
#include <openssl/opensslv.h>
#if (SSLEAY_VERSION_NUMBER >= 0x0907000L)
# include <openssl/conf.h>
#endif
			], [
int x = $5;
			])], [
				AC_MSG_RESULT([yes])
			], [
				AC_MSG_RESULT([no])

				proto_check='false'
			])
			AC_LANG_POP([C])
		])

		if test "$proto_check" = 'false'; then
			if test "[$]$1" = "force"; then
				AC_MSG_ERROR([Unable to enable $3])
			fi

			$1='false'
		fi
	fi

	if test "[$]$1" = "false"; then
		AC_DEFINE($4, [1], [Define this to disable $3 in OpenSSL support])
	fi

])

AC_DEFUN([TCLTLS_SSL_OPENSSL], [
	openssldir=''
	opensslpkgconfigdir=''
	AC_ARG_WITH([ssl-dir],
		AS_HELP_STRING(
			[--with-ssl-dir=<dir>],
			[deprecated, use --with-openssl-dir -- currently has the same meaning]
		), [
			openssldir="$withval"
		]
	)
	AC_ARG_WITH([openssl-dir],
		AS_HELP_STRING(
			[--with-openssl-dir=<dir>],
			[path to root directory of OpenSSL or LibreSSL installation]
		), [
			openssldir="$withval"
		]
	)
	AC_ARG_WITH([openssl-pkgconfig],
		AS_HELP_STRING(
			[--with-openssl-pkgconfig=<dir>],
			[path to root directory of OpenSSL or LibreSSL pkgconfigdir]
		), [
			opensslpkgconfigdir="$withval"
		]
	)

	if test -n "$openssldir"; then
		if test -e "$openssldir/libssl.$SHOBJEXT"; then
			TCLTLS_SSL_LIBS="-L$openssldir -lssl -lcrypto"
			openssldir="`AS_DIRNAME(["$openssldir"])`"
		else
			TCLTLS_SSL_LIBS="-L$openssldir/lib -lssl -lcrypto"
		fi
		TCLTLS_SSL_CFLAGS="-I$openssldir/include"
		TCLTLS_SSL_CPPFLAGS="-I$openssldir/include"
	fi

	pkgConfigExtraArgs=''
	if test "$TCLEXT_BUILD" = "static" -o "$TCLEXT_TLS_STATIC_SSL" = 'yes'; then
		pkgConfigExtraArgs='--static'
	fi

	dnl Use pkg-config to find the libraries
	dnl Temporarily update PKG_CONFIG_PATH
	PKG_CONFIG_PATH_SAVE="${PKG_CONFIG_PATH}"
	if test -n "${opensslpkgconfigdir}"; then
		if ! test -f "${opensslpkgconfigdir}/openssl.pc"; then
			AC_MSG_ERROR([Unable to locate ${opensslpkgconfigdir}/openssl.pc])
		fi

		PKG_CONFIG_PATH="${opensslpkgconfigdir}${PATH_SEPARATOR}${PKG_CONFIG_PATH}"
		export PKG_CONFIG_PATH
	fi

	AC_ARG_VAR([TCLTLS_SSL_LIBS], [libraries to pass to the linker for OpenSSL or LibreSSL])
	AC_ARG_VAR([TCLTLS_SSL_CFLAGS], [C compiler flags for OpenSSL or LibreSSL])
	AC_ARG_VAR([TCLTLS_SSL_CPPFLAGS], [C preprocessor flags for OpenSSL or LibreSSL])
	if test -z "$TCLTLS_SSL_LIBS"; then
		TCLTLS_SSL_LIBS="`"${PKGCONFIG}" openssl --libs $pkgConfigExtraArgs`" || AC_MSG_ERROR([Unable to get OpenSSL Configuration])
	fi
	if test -z "$TCLTLS_SSL_CFLAGS"; then
		TCLTLS_SSL_CFLAGS="`"${PKGCONFIG}" openssl --cflags-only-other $pkgConfigExtraArgs`" || AC_MSG_ERROR([Unable to get OpenSSL Configuration])
	fi
	if test -z "$TCLTLS_SSL_CPPFLAGS"; then
		TCLTLS_SSL_CPPFLAGS="`"${PKGCONFIG}" openssl --cflags-only-I $pkgConfigExtraArgs`" || AC_MSG_ERROR([Unable to get OpenSSL Configuration])
	fi
	PKG_CONFIG_PATH="${PKG_CONFIG_PATH_SAVE}"

	if test "$TCLEXT_BUILD" = "static"; then
		dnl If we are doing a static build, save the linker flags for other programs to consume
		rm -f tcltls.${AREXT}.linkadd
		AS_ECHO(["$TCLTLS_SSL_LIBS"]) > tcltls.${AREXT}.linkadd
	fi

	dnl If we have been asked to statically link to the SSL library, specifically tell the linker to do so
	if test "$TCLEXT_TLS_STATIC_SSL" = 'yes'; then
		dnl Don't bother doing this if we aren't actually doing the runtime linking
		if test "$TCLEXT_BUILD" != "static"; then
			dnl Split the libraries into SSL and non-SSL libraries
			new_TCLTLS_SSL_LIBS_normal=''
			new_TCLTLS_SSL_LIBS_static=''
			for arg in $TCLTLS_SSL_LIBS; do
				case "${arg}" in
					-L*)
						new_TCLTLS_SSL_LIBS_normal="${new_TCLTLS_SSL_LIBS_normal} ${arg}"
						new_TCLTLS_SSL_LIBS_static="${new_TCLTLS_SSL_LIBS_static} ${arg}"
						;;
					-ldl|-lrt|-lc|-lpthread|-lm|-lcrypt|-lidn|-lresolv|-lgcc|-lgcc_s)
						new_TCLTLS_SSL_LIBS_normal="${new_TCLTLS_SSL_LIBS_normal} ${arg}"
						;;
					-l*)
						new_TCLTLS_SSL_LIBS_static="${new_TCLTLS_SSL_LIBS_static} ${arg}"
						;;
					*)
						new_TCLTLS_SSL_LIBS_normal="${new_TCLTLS_SSL_LIBS_normal} ${arg}"
						;;
				esac
			done
			SHOBJ_DO_STATIC_LINK_LIB([OpenSSL], [$new_TCLTLS_SSL_LIBS_static], [new_TCLTLS_SSL_LIBS_static])
			TCLTLS_SSL_LIBS="${new_TCLTLS_SSL_LIBS_normal} ${new_TCLTLS_SSL_LIBS_static}"
		fi
	fi

	dnl Save compile-altering variables we are changing
	SAVE_LIBS="${LIBS}"
	SAVE_CFLAGS="${CFLAGS}"
	SAVE_CPPFLAGS="${CPPFLAGS}"

	dnl Update compile-altering variables to include the OpenSSL libraries
	LIBS="${TCLTLS_SSL_LIBS} ${SAVE_LIBS} ${TCLTLS_SSL_LIBS}"
	CFLAGS="${TCLTLS_SSL_CFLAGS} ${SAVE_CFLAGS} ${TCLTLS_SSL_CFLAGS}"
	CPPFLAGS="${TCLTLS_SSL_CPPFLAGS} ${SAVE_CPPFLAGS} ${TCLTLS_SSL_CPPFLAGS}"

	dnl Verify that basic functionality is there
	AC_LANG_PUSH(C)
	AC_MSG_CHECKING([if a basic OpenSSL program works])
	AC_LINK_IFELSE([AC_LANG_PROGRAM([
#include <openssl/ssl.h>
#include <openssl/opensslv.h>
#if (SSLEAY_VERSION_NUMBER >= 0x0907000L)
# include <openssl/conf.h>
#endif
		], [
  SSL_library_init();
  SSL_load_error_strings();
		])], [
		AC_MSG_RESULT([yes])
	], [
		AC_MSG_RESULT([no])
		AC_MSG_ERROR([Unable to compile a basic program using OpenSSL])
	])
	AC_LANG_POP([C])

	AC_CHECK_FUNCS([TLS_method])
	TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_ssl2], [SSLv2_method], [sslv2], [NO_SSL2])
	TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_ssl3], [SSLv3_method], [sslv3], [NO_SSL3])
	TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_0], [TLSv1_method], [tlsv1.0], [NO_TLS1])
	TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_1], [TLSv1_1_method], [tlsv1.1], [NO_TLS1_1])
	TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_2], [TLSv1_2_method], [tlsv1.2], [NO_TLS1_2])
	TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_3], [], [tlsv1.3], [NO_TLS1_3], [SSL_OP_NO_TLSv1_3])

	AC_CACHE_VAL([tcltls_cv_func_tlsext_hostname], [
		AC_LANG_PUSH(C)
		AC_MSG_CHECKING([for SSL_set_tlsext_host_name])
		AC_LINK_IFELSE([AC_LANG_PROGRAM([
#include <openssl/ssl.h>
#if (SSLEAY_VERSION_NUMBER >= 0x0907000L)
# include <openssl/conf.h>
#endif
			], [
  (void)SSL_set_tlsext_host_name((void *) 0, (void *) 0);
			])], [
			AC_MSG_RESULT([yes])
			tcltls_cv_func_tlsext_hostname='yes'
		], [
			AC_MSG_RESULT([no])
			tcltls_cv_func_tlsext_hostname='no'
		])
		AC_LANG_POP([C])
	])

	if test "$tcltls_cv_func_tlsext_hostname" = 'no'; then
		AC_DEFINE([OPENSSL_NO_TLSEXT], [1], [Define this if your OpenSSL does not support the TLS Extension for SNI])
	fi

	dnl Restore compile-altering variables
	LIBS="${SAVE_LIBS}"
	CFLAGS="${SAVE_CFLAGS}"
	CPPFLAGS="${SAVE_CPPFLAGS}"
])

Deleted aclocal/versionscript.m4 version [b9d44e1a68].

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AC_DEFUN([DC_SETUP_STABLE_API], [
	VERSIONSCRIPT="$1"
	SYMFILE="$2"

	DC_FIND_STRIP_AND_REMOVESYMS([$SYMFILE])
	DC_SETVERSIONSCRIPT([$VERSIONSCRIPT], [$SYMFILE])
])


AC_DEFUN([DC_SETVERSIONSCRIPT], [
	VERSIONSCRIPT="$1"
	SYMFILE="$2"
	TMPSYMFILE="${SYMFILE}.tmp"
	TMPVERSIONSCRIPT="${VERSIONSCRIPT}.tmp"

	echo "${SYMPREFIX}Test_Symbol" > "${TMPSYMFILE}"

	echo '{' > "${TMPVERSIONSCRIPT}"
	echo '	local:' >> "${TMPVERSIONSCRIPT}"
	echo "		${SYMPREFIX}Test_Symbol;" >> "${TMPVERSIONSCRIPT}"
	echo '};' >> "${TMPVERSIONSCRIPT}"

	SAVE_LDFLAGS="${LDFLAGS}"

	AC_MSG_CHECKING([for how to set version script])

	for tryaddldflags in "-Wl,--version-script,${TMPVERSIONSCRIPT}" "-Wl,-exported_symbols_list,${TMPSYMFILE}"; do
		LDFLAGS="${SAVE_LDFLAGS} ${tryaddldflags}"
		AC_TRY_LINK([void Test_Symbol(void) { return; }], [], [
			addldflags="`echo "${tryaddldflags}" | sed 's/\.tmp$//'`"

			break
		])
	done

	rm -f "${TMPSYMFILE}"
	rm -f "${TMPVERSIONSCRIPT}"

	LDFLAGS="${SAVE_LDFLAGS}"

	if test -n "${addldflags}"; then
		SHOBJLDFLAGS="${SHOBJLDFLAGS} ${addldflags}"

		AC_MSG_RESULT($addldflags)
	else
		AC_MSG_RESULT([don't know])
	fi

	AC_SUBST(SHOBJLDFLAGS)
])

AC_DEFUN([DC_FIND_STRIP_AND_REMOVESYMS], [
	SYMFILE="$1"

	dnl Determine how to strip executables
	AC_CHECK_TOOLS(OBJCOPY, objcopy gobjcopy, [false])
	AC_CHECK_TOOLS(STRIP, strip gstrip, [false])

	if test "x${STRIP}" = "xfalse"; then
		STRIP="${OBJCOPY}"
	fi

	WEAKENSYMS='true'
	REMOVESYMS='true'
	SYMPREFIX=''

	case $host_os in
		darwin*)
			SYMPREFIX="_"
			REMOVESYMS="${STRIP} -u -x"
			;;
		*)
			if test "x${OBJCOPY}" != "xfalse"; then
				WEAKENSYMS="${OBJCOPY} --keep-global-symbols=${SYMFILE}"
				REMOVESYMS="${OBJCOPY} --discard-all"
			elif test "x${STRIP}" != "xfalse"; then
				REMOVESYMS="${STRIP} -x"
			fi
			;;
	esac

	AC_SUBST(WEAKENSYMS)
	AC_SUBST(REMOVESYMS)
	AC_SUBST(SYMPREFIX)
])

Deleted autogen.sh version [825e8c0a23].

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#! /usr/bin/env bash

update='0'
if [ "$1" = '-update' ]; then
	update='1'
fi

commands=(
	curl diff cat mkdir rm mv automake autoconf
)

urls=(
	http://chiselapp.com/user/rkeene/repository/autoconf/doc/trunk/tcl.m4
	http://chiselapp.com/user/rkeene/repository/autoconf/doc/trunk/shobj.m4
	http://chiselapp.com/user/rkeene/repository/autoconf/doc/trunk/versionscript.m4
	'http://git.savannah.gnu.org/gitweb/?p=autoconf-archive.git;a=blob_plain;f=m4/ax_check_compile_flag.m4'
)

localFiles=(
	aclocal/tcltls_openssl.m4
)

failed='0'
for command in "${commands[@]}"; do
	if [ ! -f "$(which "${command}" 2>/dev/null)" ]; then
		echo "error: Unable to locate ${command}" >&2
		failed='1'
	fi
done
if [ "${failed}" = '1' ]; then
	exit 1
fi

cd "$(dirname "$(which "$0")")" || exit 1

mkdir aclocal >/dev/null 2>/dev/null

files=()

for url in "${urls[@]}"; do
	file="aclocal/$(echo "${url}" | sed 's@^.*/@@')"

	if [ -f "${file}" ]; then
		if [ "${update}" = '0' ]; then
			files=("${files[@]}" "${file}")

			continue
		fi
	fi

	curl -lsS "${url}" > "${file}.new" || exit 1
	if diff "${file}.new" "${file}" >/dev/null 2>/dev/null; then
		rm -f "${file}.new"
	else
		mv "${file}.new" "${file}"
	fi

	files=("${files[@]}" "${file}")
done

for file in "${files[@]}" "${localFiles[@]}"; do
	cat "${file}"
done > aclocal.m4.new

if diff aclocal.m4.new aclocal.m4 >/dev/null 2>/dev/null; then
	rm -f aclocal.m4.new
else
	mv aclocal.m4.new aclocal.m4
fi

automake --add-missing --copy --force-missing >/dev/null 2>/dev/null
if ! [ -f install-sh -o -f install.sh -o -f shtool ]; then
	echo "automake failed" >&2
	exit 1
fi

autoconf

if grep AC_COMPILE_IFELSE aclocal/ax_check_compile_flag.m4 >/dev/null; then
	sed 's@AC_COMPILE_IFELSE@AC_LINK_IFELSE@g' aclocal/ax_check_compile_flag.m4 > aclocal/ax_check_compile_flag.m4.new
	mv aclocal/ax_check_compile_flag.m4.new aclocal/ax_check_compile_flag.m4
fi

rm -rf autom4te.cache

Deleted build/makearch.info version [f2c0aaf165].

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# This is the name of the utility, it will be prefixed to the tarball name
UTIL="tcltls"

# This is the name of output files that should exist after configure 
# procedures.
BINS="tcltls.so"

# This lists the name of files that are required to exist
REQS=""

# Version of utility, if empty it will be guessed.
# If set to "auto" it will be maintained in a file called .version
# in the source directory and the revision will be incremented
# each time a "makearch" is done.
#
# If @@SVNLCR@@ is used anywhere in this version number, it will be
# replaced with the highest last-changed-rev from the output of
#   svn info -R    (or 0)
VERS=""

# Space sperated list of documents, if they exist, they will be
# prefixed with the contents of the DOC_HDR file and substitution
# will occur:
#     @@UTIL@@ becomes the utility name ${UTIL}
#     @@VERS@@ becomes the utility version
#     @@DATE@@ becomes the current date
DOCS="README.txt ChangeLog"
DOC_HDR="HEADER"

# These files follow the same convention as DOCS, but don't have the header
# tacked onto them.
UPDATE_VARS="tls.htm"

# This script is executed immediately after copying the files
# to a temp directory to attempt to compile
BEFORE="build/pre.sh"

# This script is executed after updating variables
UPDATED=""

# This script is executed immediately prior to creation of the
# tarball
AFTER="build/post.sh"

# Files matching these (space-seperated) patterns are deleted
TMPS="*.out HEADER"

Deleted build/post.sh version [256b2f5d84].

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#! /usr/bin/env bash

set -e

rm -rf build
rm -f autogen.sh

exit 0

Deleted build/pre.sh version [5b92f77928].

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#! /usr/bin/env bash

./autogen.sh || exit 1
rm -rf aclocal

exit 0

Added configure version [4c56eae107].

more than 10,000 changes

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dnl Define ourselves
AC_INIT(tcltls, 1.8.0)

dnl Checks for programs.
#!/bin/bash -norc
dnl	This file is an input file used by the GNU "autoconf" program to
dnl	generate the file "configure", which is run during Tcl installation
dnl	to configure the system for the local environment.
AC_PROG_CC
AC_PROG_MAKE_SET
AC_PROG_INSTALL
AC_GNU_SOURCE

dnl Determine system information
DC_CHK_OS_INFO

#
dnl Look for appropriate headers
AC_CHECK_HEADERS(unistd.h stdlib.h string.h strings.h)
#-----------------------------------------------------------------------
# This is the configure.ac for the TclTLS extension.  The only places you
# should need to modify this file are marked by the string __CHANGE__.
#-----------------------------------------------------------------------

#-----------------------------------------------------------------------
dnl Perform Tcl Extension required stuff
# Set your package name and version numbers here.
TCLEXT_INIT

if test "$TCLEXT_BUILD" != 'static'; then
#
# This initializes the environment with PACKAGE_NAME and PACKAGE_VERSION
# set as provided.  These will also be added as -D defs in your Makefile
# so you can encode the package version directly into the source files.
# This will also define a special symbol for Windows (BUILD_<PACKAGE_NAME>
# so that we create the export library with the dll.
	dnl Determine how to make shared objects
	DC_GET_SHOBJFLAGS
#-----------------------------------------------------------------------

	EXTENSION_TARGET="tcltls.${SHOBJEXT}"
else
AC_INIT([tls],[1.8.0])
	AC_CHECK_TOOL([AR], [ar], [false])
	AC_CHECK_TOOL([RANLIB], [ranlib], [:])
	EXTENSION_TARGET="tcltls.${AREXT}"
fi
AC_SUBST(EXTENSION_TARGET)
AC_SUBST(TCLEXT_BUILD)

dnl Determine what SSL library to link with
AC_ARG_WITH([ssl], AS_HELP_STRING([--with-ssl=<name>], [name of ssl library to build against (openssl, libressl, nss, auto)]), [
	if test "$withval" = "no"; then
#--------------------------------------------------------------------
# Call TEA_INIT as the first TEA_ macro to set up initial vars.
# This will define a ${TEA_PLATFORM} variable == "unix" or "windows"
# as well as PKG_LIB_FILE and PKG_STUB_LIB_FILE.
#--------------------------------------------------------------------

TEA_INIT

		AC_MSG_ERROR([You may not specify --without-ssl])
	fi
AC_CONFIG_AUX_DIR(tclconfig)

	if test "$withval" = "yes"; then
		AC_MSG_ERROR([If you specify --with-ssl then you must provide a value])
	fi
#--------------------------------------------------------------------
# Load the tclConfig.sh file
#--------------------------------------------------------------------

	tcltls_ssl_lib="$withval"
], [
TEA_PATH_TCLCONFIG
TEA_LOAD_TCLCONFIG

	tcltls_ssl_lib='auto'
])
#--------------------------------------------------------------------
# Load the tkConfig.sh file if necessary (Tk extension)
#--------------------------------------------------------------------

dnl Enable support for building the same library every time
tcltls_deterministic='false'
AC_ARG_ENABLE([deterministic], AS_HELP_STRING([--enable-deterministic], [enable deterministic parameters]), [
	if test "$enableval" = "yes"; then
		tcltls_deterministic='true'
	fi
])
if test "$tcltls_deterministic" = 'true'; then
	GEN_DH_PARAMS_ARGS='fallback'
else
	GEN_DH_PARAMS_ARGS=''
#TEA_PATH_TKCONFIG
fi
#TEA_LOAD_TKCONFIG

dnl Enable support for specifying pre-computed DH params size
AC_ARG_WITH([builtin-dh-params-size], AS_HELP_STRING([--with-builtin-dh-params-size=<bits>], [specify the size of the built-in, precomputed, DH params]), [
	AS_CASE([$withval],
		[2048|4096|8192],,
		[
#-----------------------------------------------------------------------
# Handle the --prefix=... option by defaulting to what Tcl gave.
# Must be called after TEA_LOAD_TCLCONFIG and before TEA_SETUP_COMPILER.
#-----------------------------------------------------------------------

TEA_PREFIX
			AC_MSG_ERROR([Unsupported DH params size: $withval])
		]
	)

#-----------------------------------------------------------------------
# Standard compiler checks.
# This sets up CC by using the CC env var, or looks for gcc otherwise.
# This also calls AC_PROG_CC and a few others to create the basic setup
# necessary to compile executables.
#-----------------------------------------------------------------------

	GEN_DH_PARAMS_ARGS="${GEN_DH_PARAMS_ARGS} bits=$withval"
])
AC_SUBST(GEN_DH_PARAMS_ARGS)
TEA_SETUP_COMPILER

dnl Allow the user to manually disable protocols
dnl ## SSLv2: Enabled by default
tcltls_ssl_ssl2='true'
AC_ARG_ENABLE([sslv2], AS_HELP_STRING([--disable-sslv2], [disable SSLv2 protocol]), [
	if test "$enableval" = "yes"; then
		tcltls_ssl_ssl2='force'
	else
		tcltls_ssl_ssl2='false'
	fi
])
#-----------------------------------------------------------------------
# __CHANGE__
# Specify the C source files to compile in TEA_ADD_SOURCES,
# public headers that need to be installed in TEA_ADD_HEADERS,
# stub library C source files to compile in TEA_ADD_STUB_SOURCES,
# and runtime Tcl library files in TEA_ADD_TCL_SOURCES.
# This defines PKG(_STUB)_SOURCES, PKG(_STUB)_OBJECTS, PKG_HEADERS
# and PKG_TCL_SOURCES.
#-----------------------------------------------------------------------

dnl ## SSLv3: Enabled by default
tcltls_ssl_ssl3='true'
TEA_ADD_SOURCES([tls.c tlsBIO.c tlsIO.c tlsX509.c])
TEA_ADD_HEADERS([generic/tls.h])
AC_ARG_ENABLE([sslv3], AS_HELP_STRING([--disable-sslv3], [disable SSLv3 protocol]), [
	if test "$enableval" = "yes"; then
		tcltls_ssl_ssl3='force'
TEA_ADD_INCLUDES([])
	else
		tcltls_ssl_ssl3='false'
	fi
])

TEA_ADD_LIBS([])
TEA_ADD_CFLAGS([])
dnl ## TLSv1.0: Enabled by default
tcltls_ssl_tls1_0='true'
TEA_ADD_STUB_SOURCES([])
TEA_ADD_TCL_SOURCES([library/tls.tcl])
AC_ARG_ENABLE([tlsv1.0], AS_HELP_STRING([--disable-tlsv1.0], [disable TLSv1.0 protocol]), [
	if test "$enableval" = "yes"; then
		tcltls_ssl_tls1_0='force'

	else
		tcltls_ssl_tls1_0='false'
	fi
])

#--------------------------------------------------------------------
#
dnl ## TLSv1.1: Enabled by default
tcltls_ssl_tls1_1='true'
AC_ARG_ENABLE([tlsv1.1], AS_HELP_STRING([--disable-tlsv1.1], [disable TLSv1.1 protocol]), [
	if test "$enableval" = "yes"; then
		tcltls_ssl_tls1_1='force'
	else
		tcltls_ssl_tls1_1='false'
	fi
# You can add more files to clean if your extension creates any extra
# files by extending CLEANFILES.
])

dnl ## TLSv1.2: Enabled by default
# Add pkgIndex.tcl if it is generated in the Makefile instead of ./configure
# and change Makefile.in to move it from CONFIG_CLEAN_FILES to BINARIES var.
#
# A few miscellaneous platform-specific items:
# TEA_ADD_* any platform specific compiler/build info here.
#--------------------------------------------------------------------

tcltls_ssl_tls1_2='true'
AC_ARG_ENABLE([tlsv1.2], AS_HELP_STRING([--disable-tlsv1.2], [disable TLSv1.2 protocol]), [
	if test "$enableval" = "yes"; then
		tcltls_ssl_tls1_2='force'
	else
		tcltls_ssl_tls1_2='false'
	fi
CONFIG_CLEAN_FILES="$CONFIG_CLEAN_FILES tls.tcl.h.* config.log config.status dh_params.h.new dh_params.h Makefile pkgIndex.tcl tcltls.a.linkadd tcltls.syms"
if test "${TEA_PLATFORM}" = "windows" ; then
    AC_DEFINE(BUILD_tls)
    AC_DEFINE(WINDOWS)
    CLEANFILES="pkgIndex.tcl *.lib *.dll *.exp *.ilk *.pdb vc*.pch"
else
    CLEANFILES="pkgIndex.tcl *.so"
fi
])
AC_SUBST(CLEANFILES)

#--------------------------------------------------------------------
# Choose which headers you need.  Extension authors should try very
# hard to only rely on the Tcl public header files.  Internal headers
# contain private data structures and are subject to change without
dnl ## TLSv1.3: Enabled by default
tcltls_ssl_tls1_3='true'
AC_ARG_ENABLE([tlsv1.3], AS_HELP_STRING([--disable-tlsv1.3], [disable TLSv1.3 protocol]), [
	if test "$enableval" = "yes"; then
		tcltls_ssl_tls1_3='force'
# notice.
# This MUST be called after TEA_LOAD_TCLCONFIG / TEA_LOAD_TKCONFIG
#--------------------------------------------------------------------

TEA_PUBLIC_TCL_HEADERS
	else
#TEA_PRIVATE_TCL_HEADERS
		tcltls_ssl_tls1_3='false'
	fi
])

#TEA_PUBLIC_TK_HEADERS
#TEA_PRIVATE_TK_HEADERS
#TEA_PATH_X

dnl Enable support for a debugging build
tcltls_debug='false'
AC_ARG_ENABLE([debug], AS_HELP_STRING([--enable-debug], [enable debugging parameters]), [
	if test "$enableval" = "yes"; then
		tcltls_debug='true'
	fi
#--------------------------------------------------------------------
# Check whether --enable-threads or --disable-threads was given.
# This auto-enables if Tcl was compiled threaded.
#--------------------------------------------------------------------

TEA_ENABLE_THREADS

])
if test "$tcltls_debug" = 'true'; then
	AC_DEFINE(TCLEXT_TCLTLS_DEBUG, [1], [Enable debugging build])
	AX_CHECK_COMPILE_FLAG([-fcheck-pointer-bounds], [CFLAGS="$CFLAGS -fcheck-pointer-bounds"])
#--------------------------------------------------------------------
# The statement below defines a collection of symbols related to
# building as a shared library instead of a static library.
#--------------------------------------------------------------------

else
	dnl If we are not doing debugging disable some of the more annoying warnings
	AX_CHECK_COMPILE_FLAG([-Wno-unused-value], [CFLAGS="$CFLAGS -Wno-unused-value"])
TEA_ENABLE_SHARED
	AX_CHECK_COMPILE_FLAG([-Wno-unused-parameter], [CFLAGS="$CFLAGS -Wno-unused-parameter"])
	AX_CHECK_COMPILE_FLAG([-Wno-deprecated-declarations], [CFLAGS="$CFLAGS -Wno-deprecated-declarations"])
fi

#--------------------------------------------------------------------
# This macro figures out what flags to use with the compiler/linker
# when building shared/static debug/optimized objects.  This information
dnl Find "pkg-config" since we need to use it
AC_CHECK_TOOL([PKGCONFIG], [pkg-config], [false])
# can be taken from the tclConfig.sh file, but this figures it all out.
#--------------------------------------------------------------------

dnl Determine if we have been asked to use a fast path if possible
tcltls_ssl_fastpath='no'
AC_ARG_ENABLE([ssl-fastpath], AS_HELP_STRING([--enable-ssl-fastpath], [enable using the underlying file descriptor for talking directly to the SSL library]), [
	if test "$enableval" = 'yes'; then
		tcltls_ssl_fastpath='yes'
	else
		tcltls_ssl_fastpath='no'
TEA_CONFIG_CFLAGS
	fi
])

if test "$tcltls_ssl_fastpath" = 'yes'; then
	AC_DEFINE(TCLTLS_SSL_USE_FASTPATH, [1], [Define this to enable using the underlying file descriptor for talking directly to the SSL library])
fi
#--------------------------------------------------------------------
# Set the default compiler switches based on the --enable-symbols option.
#--------------------------------------------------------------------

dnl Determine if we have been asked to statically link to the SSL library
TCLEXT_TLS_STATIC_SSL='no'
AC_ARG_ENABLE([static-ssl], AS_HELP_STRING([--enable-static-ssl], [enable statically linking to the specified SSL library]), [
	if test "$enableval" = 'yes'; then
		TCLEXT_TLS_STATIC_SSL='yes'
TEA_ENABLE_SYMBOLS

#--------------------------------------------------------------------
# Everyone should be linking against the Tcl stub library.  If you
# can't for some reason, remove this definition.  If you aren't using
# stubs, you also need to modify the SHLIB_LD_LIBS setting below to
# link against the non-stubbed Tcl library.  Add Tk too if necessary.
	fi
])
#--------------------------------------------------------------------

AC_DEFINE(USE_TCL_STUBS)
dnl Enable compiler warnings
AX_CHECK_COMPILE_FLAG([-Wall], [CFLAGS="$CFLAGS -Wall"])
AX_CHECK_COMPILE_FLAG([-W], [
	CFLAGS="$CFLAGS -W"
	AX_CHECK_COMPILE_FLAG([-Wno-self-assign], [CFLAGS="$CFLAGS -Wno-self-assign"])
#AC_DEFINE(USE_TK_STUBS)

#--------------------------------------------------------------------
# This macro generates a line to use when building a library.  It
# depends on values set by the TEA_ENABLE_SHARED, TEA_ENABLE_SYMBOLS,
])
# and TEA_LOAD_TCLCONFIG macros above.
#--------------------------------------------------------------------

dnl Enable hardening
tcltls_enable_hardening='auto'
AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable hardening attempts]), [
TEA_MAKE_LIB

	tcltls_enable_hardening="$enableval"
])
if test "$tcltls_enable_hardening" = 'auto'; then
	tcltls_enable_hardening='true'
	if test "$TCLEXT_BUILD" = 'static'; then
		tcltls_enable_hardening='false'
	fi
#--------------------------------------------------------------------
# This marco includes the TCL TLS specific functions to set the
# OpenSSL or LibreSSL config.
#--------------------------------------------------------------------
elif test "$tcltls_enable_hardening" = 'yes'; then
	tcltls_enable_hardening='true'
else
	tcltls_enable_hardening='false'
fi
if test "$tcltls_enable_hardening" = 'true'; then
	AX_CHECK_COMPILE_FLAG([-fstack-protector-all], [CFLAGS="$CFLAGS -fstack-protector-all"])
	AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CFLAGS="$CFLAGS -fno-strict-overflow"])
	AC_DEFINE([_FORTIFY_SOURCE], [2], [Enable fortification])
fi

dnl XXX:TODO: Automatically determine the SSL library to use
dnl           defaulting to OpenSSL for compatibility reasons
if test "$tcltls_ssl_lib" = 'auto'; then
	tcltls_ssl_lib='openssl'
fi
TCLTLS_SSL_OPENSSL

#--------------------------------------------------------------------
# Shared libraries and static libraries have different names.
# Also, windows libraries and unix libraries have different names.
AC_MSG_CHECKING([which TLS library to use])
# For the OpenSSL version, I chose to use the same library names that
AC_MSG_RESULT([$tcltls_ssl_lib])
# OpenSSL uses as its default names.
#--------------------------------------------------------------------

dnl Manually rewrite libressl to OpenSSL since we use the
dnl compatibility interface
if test "$tcltls_ssl_lib" = "libressl"; then
if test "${TEA_PLATFORM}" = "windows" ; then
    if test "$GCC" = "yes"; then
	tcltls_ssl_lib='openssl'
fi

	TEA_ADD_CFLAGS([${TCLTLS_SSL_CFLAGS}])
	TEA_ADD_INCLUDES([${TCLTLS_SSL_INCLUDES}])
	TEA_ADD_LIBS([${TCLTLS_SSL_LIBS}])
    fi
else
AS_CASE([$tcltls_ssl_lib],
	[openssl], [
		TCLTLS_SSL_OPENSSL
	],
	[nss], [
	 	TCLTLS_SSL_LIBS=""
		TCLTLS_SSL_CFLAGS=""
		TCLTLS_SSL_CPPFLAGS=""
	],
	[
		AC_MSG_ERROR([Unsupported SSL library: $tcltls_ssl_lib])
	]
)
	TEA_ADD_CFLAGS([${TCLTLS_SSL_CFLAGS}])
	TEA_ADD_INCLUDES([${TCLTLS_SSL_INCLUDES}])
	TEA_ADD_LIBS([${TCLTLS_SSL_LIBS}])
fi

#--------------------------------------------------------------------
# Determine the name of the tclsh and/or wish executables in the
# Tcl and Tk build directories or the location they were installed
# into. These paths are used to support running test cases only,
# the Makefile should not be making use of these paths to generate
# a pkgIndex.tcl file or anything else at extension build time.
#--------------------------------------------------------------------

TEA_PROG_TCLSH
#TEA_PROG_WISH

dnl Determine how to use this SSL library
AC_MSG_CHECKING([how to use $tcltls_ssl_lib])
LIBS="${TCLTLS_SSL_LIBS} ${LIBS} ${TCLTLS_SSL_LIBS}"
CFLAGS="${TCLTLS_SSL_CFLAGS} ${CFLAGS} ${TCLTLS_SSL_CFLAGS}"
CPPFLAGS="${TCLTLS_SSL_CPPFLAGS} ${CPPFLAGS} ${TCLTLS_SSL_CPPFLAGS}"
AC_MSG_RESULT([$TCLTLS_SSL_CPPFLAGS $TCLTLS_SSL_CFLAGS $TCLTLS_SSL_LIBS])
#--------------------------------------------------------------------
# Setup a *Config.sh.in configuration file.
#--------------------------------------------------------------------

dnl Sync the RPATH if requested
if test "$TCLEXT_BUILD" != 'static'; then
	if test "$TCLEXT_TLS_STATIC_SSL" = 'yes'; then
		DC_SYNC_RPATH([no])
	else
		DC_SYNC_RPATH([yes])
#TEA_EXPORT_CONFIG([tls])
#AC_SUBST(SAMPLE_VAR)
	fi
fi

#--------------------------------------------------------------------
# Specify files to substitute AC variables in. You may alternatively
dnl Enable a stable ABI
# have a special pkgIndex.tcl.in or other files which require
DC_SETUP_STABLE_API([${srcdir}/tcltls.vers], tcltls.syms)
if test "$tcltls_debug" = 'true'; then
	WEAKENSYMS=':'
	REMOVESYMS=':'
fi
# substituting the AC variables in. Include these here.
#--------------------------------------------------------------------

AC_CONFIG_FILES([Makefile pkgIndex.tcl])
#AC_CONFIG_FILES([tlsConfig.sh])

#--------------------------------------------------------------------
# Finally, substitute all of the various values into the files
# specified with AC_CONFIG_FILES.
#--------------------------------------------------------------------
dnl Produce output
AC_OUTPUT(Makefile pkgIndex.tcl tcltls.syms)

AC_OUTPUT

Added doc/tls.html version [a06ffeb7ad].

























































































































































































































































































































































































































































































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<!doctype html public "-//W3C//DTD HTML 4.0 Transitional//EN"> 

<html>

<head>
<meta http-equiv="Content-Type"
content="text/html; charset=iso-8859-1">
<meta name="Copyright" content="1999 Matt Newman / 2004 Starfish Systems">
<title>TLS (SSL) Tcl Commands</title>
</head>

<body bgcolor="#FFFFFF">

<dl>
    <dd><a href="#NAME">NAME</a> <dl>
            <dd><strong>tls</strong> - binding to <strong>OpenSSL</strong>
                toolkit.</dd>
        </dl>
    </dd>
    <dd><a href="#SYNOPSIS">SYNOPSIS</a> </dd>
    <dd><dl>
            <dd><b>package require Tcl </b><em>?8.4?</em></dd>
            <dd><b>package require tls </b><em>?@@VERS@@?</em></dd>
            <dt>&nbsp;</dt>
            <dd><b>tls::init </b><i>?options?</i> </dd>
            <dd><b>tls::socket </b><em>?options? host port</em></dd>
            <dd><b>tls::socket</b><em> ?-server command?
                ?options? port</em></dd>
            <dd><b>tls::handshake</b><em> channel</em></dd>
            <dd><b>tls::status </b><em>?-local? channel</em></dd>
            <dd><b>tls::import</b><em> channel ?options?</em></dd>
            <dd><b>tls::unimport</b><em> channel</em></dd>
            <dd><b>tls::ciphers </b><em>protocol ?verbose?</em></dd>
            <dd><b>tls::version</b></dd>
        </dl>
    </dd>
    <dd><a href="#COMMANDS">COMMANDS</a></dd>
    <dd><a href="#CALLBACK OPTIONS">CALLBACK OPTIONS</a></dd>
    <dd><a href="#HTTPS EXAMPLE">HTTPS EXAMPLE</a></dd>
    <dd><a href="#SEE ALSO">SPECIAL CONSIDERATIONS</a></dd>
    <dd><a href="#SEE ALSO">SEE ALSO</a></dd>
</dl>

<hr>

<h3><a name="NAME">NAME</a></h3>

<p><strong>tls</strong> - binding to <strong>OpenSSL</strong>
toolkit.</p>

<h3><a name="SYNOPSIS">SYNOPSIS</a></h3>

<p><b>package require Tcl 8.4</b><br>
<b>package require tls @@VERS@@</b><br>
<br>
<a href="#tls::init"><b>tls::init </b><i>?options?</i><br>
</a><a href="#tls::socket"><b>tls::socket </b><em>?options? host
port</em><br>
<b>tls::socket</b><em> ?-server command? ?options? port</em><br>
</a><a href="#tls::status"><b>tls::status </b><em>?-local? channel</em><br>
</a><a href="#tls::handshake"><b>tls::handshake</b><em> channel</em></a><br>
<br>
<a href="#tls::import"><b>tls::import </b><i>channel ?options?</i></a><br>
<a href="#tls::unimport"><b>tls::unimport </b><i>channel</i></a><br>
<a href="#tls::ciphers protocol ?verbose?"><strong>tls::ciphers</strong>
<em>protocol ?verbose?</em></a><br>
<a href="#tls::version"><b>tls::version</b></a>
</p>

<h3><a name="DESCRIPTION">DESCRIPTION</a></h3>

<p>This extension provides a generic binding to <a
href="http://www.openssl.org/">OpenSSL</a>, utilizing the
<strong>Tcl_StackChannel</strong>
API for Tcl 8.4 and higher. The sockets behave exactly the same
as channels created using Tcl's built-in <strong>socket</strong>
command with additional options for controlling the SSL session.
</p>

<h3><a name="COMMANDS">COMMANDS</a></h3>

<p>Typically one would use the <strong>tls::socket </strong>command
which provides compatibility with the native Tcl <strong>socket</strong>
command. In such cases <strong>tls::import</strong> should not be
used directly.</p>

<dl>
    <dt><a name="tls::init"><b>tls::init </b><i>?options?</i></a></dt>
    <dd>This routine sets the default options used by <strong>tls::socket</strong>
        and is <em>optional</em>. If you call <strong>tls::import</strong>
        directly this routine has no effect. Any of the options
        that <strong>tls::socket</strong> accepts can be set
        using this command, though you should limit your options
        to only TLS related ones.</dd>
    <dt>&nbsp;</dt>
    <dt><a name="tls::socket"><b>tls::socket </b><em>?options?
        host port</em></a></dt>
    <dt><b>tls::socket</b><em> ?-server command? ?options? port</em></dt>
    <dd>This is a helper function that utilizes the underlying
        commands (<strong>tls::import</strong>). It behaves
        exactly the same as the native Tcl <strong>socket</strong>
        command except that the options can include any of the
        applicable <a href="#tls::import"><strong>tls:import</strong></a>
        options with one additional option:
<blockquote>
    <dl>
        <dt><strong>-autoservername</strong> <em>bool</em></dt>
        <dd>Automatically send the -servername as the <em>host</em> argument
            (<strong>default</strong>: <em>false</em>)</dd>
    </dl>
</blockquote>
    <dt>&nbsp;</dt>
    <dt><a name="tls::handshake"><strong>tls::handshake</strong> <em>channel</em></a></dt>
    <dd>Forces handshake to take place, and returns 0 if
        handshake is still in progress (non-blocking), or 1 if
        the handshake was successful. If the handshake failed
        this routine will throw an error.</dd>
    <dt>&nbsp;</dt>
    <dt><a name="tls::status"><strong>tls::status</strong>
    <em>?-local? channel</em></a></dt>
    <dd>Returns the current security status of an SSL channel. The
        result is a list of key-value pairs describing the
        connected peer. If the result is an empty list then the
        SSL handshake has not yet completed.
        If <em>-local</em> is given, then the certificate information
        is the one used locally.</dd>
</dl>

<blockquote>
    <dl>
        <dt><strong>issuer</strong> <em>dn</em></dt>
        <dd>The distinguished name (DN) of the certificate
            issuer.</dd>
        <dt><strong>subject</strong> <em>dn</em></dt>
        <dd>The distinguished name (DN) of the certificate
            subject.</dd>
        <dt><strong>notBefore</strong> <em>date</em></dt>
        <dd>The begin date for the validity of the certificate.</dd>
        <dt><strong>notAfter</strong> <em>date</em></dt>
        <dd>The expiry date for the certificate.</dd>
        <dt><strong>serial</strong> <em>n</em></dt>
        <dd>The serial number of the certificate.</dd>
        <dt><strong>cipher</strong> <em>cipher</em></dt>
        <dd>The current cipher in use between the client and
            server channels.</dd>
        <dt><strong>sbits</strong> <em>n</em></dt>
        <dd>The number of bits used for the session key.</dd>
        <dt><strong>certificate</strong> <em>cert</em></dt>
        <dd>The PEM encoded certificate.</dd>
        <dt><strong>sha1_hash</strong> <em>hash</em></dt>
        <dd>The SHA1 hash of the certificate.</dd>
        <dt><strong>sha256_hash</strong> <em>hash</em></dt>
        <dd>The SHA256 hash of the certificate.</dd>
        <dt><strong>alpn</strong> <em>protocol</em></dt>
        <dd>The protocol selected after Application-Layer Protocol
	    Negotiation (ALPN).</dd>
        <dt><strong>version</strong> <em>value</em></dt>
        <dd>The protocol version used for the connection:
	  SSLv2, SSLv3, TLSv1, TLSv1.1, TLSv1.2, TLSv1.3, unknown</dd>
    </dl>
</blockquote>

<dl>
    <dt><a name="tls::import"><b>tls::import </b><i>channel
        ?options?</i></a></dt>
    <dd>SSL-enable a regular Tcl channel - it need not be a
        socket, but must provide bi-directional flow. Also
        setting session parameters for SSL handshake.</dd>
</dl>

<blockquote>
    <dl>
        <dt><strong>-alpn</strong> <em>list</em></dt>
        <dd>List of protocols to offer during Application-Layer
	    Protocol Negotiation (ALPN). For example: h2, http/1.1, etc.</dd>
        <dt><strong>-cadir</strong> <em>dir</em></dt>
        <dd>Provide the directory containing the CA certificates. The
	default directory is platform specific and can be set at
	compile time. This can be overridden via the <b>SSL_CERT_DIR</b>
	environment variable.</dd>
        <dt><strong>-cafile </strong><em>filename</em></dt>
        <dd>Provide the CA file.</dd>
        <dt><strong>-certfile</strong> <em>filename</em></dt>
        <dd>Provide the name of a file containing certificate to use.
	The default name is cert.pem. This can be overridden via the
	<b>SSL_CERT_FILE</b> environment variable.</dd>
        <dt><strong>-cert</strong> <em>filename</em></dt>
        <dd>Provide the contents of a certificate to use, as a DER encoded binary value (X.509 DER).</dd>
        <dt><strong>-cipher </strong><em>string</em></dt>
        <dd>Provide the cipher suites to use. Syntax is as per
            OpenSSL.</dd>
        <dt><strong>-command</strong> <em>callback</em></dt>
        <dd>If specified, this callback will be invoked at several points
            during the OpenSSL handshake.  It can pass errors and tracing
            information, and it can allow Tcl scripts to perform
            their own validation of the certificate in place of the
            default validation provided by OpenSSL.
            <br>
            See <a href="#CALLBACK OPTIONS">CALLBACK OPTIONS</a> for
            further discussion.</dd>
        <dt><strong>-dhparams </strong><em>filename</em></dt>
        <dd>Provide a Diffie-Hellman parameters file.</dd>
        <dt><strong>-keyfile</strong> <em>filename</em></dt>
        <dd>Provide the private key file. (<strong>default</strong>:
            value of -certfile)</dd>
        <dt><strong>-key</strong> <em>filename</em></dt>
        <dd>Provide the private key to use as a DER encoded value (PKCS#1 DER)</dd>
        <dt><strong>-model</strong> <em>channel</em></dt>
        <dd>This will force this channel to share the same <em><strong>SSL_CTX</strong></em>
            structure as the specified <em>channel</em>, and
            therefore share callbacks etc.</dd>
        <dt><strong>-password</strong> <em>callback</em></dt>
        <dd>If supplied, this callback will be invoked when OpenSSL needs
            to obtain a password, typically to unlock the private key of
	    a certificate.
            The callback should return a string which represents the
            password to be used.
            <br>
            See <a href="#CALLBACK OPTIONS">CALLBACK OPTIONS</a> for
            further discussion.</dd>
        <dt><strong>-request </strong><em>bool</em></dt>
        <dd>Request a certificate from peer during SSL handshake.
            (<strong>default</strong>: <em>true</em>)</dd>
        <dt><strong>-require</strong> <em>bool</em></dt>
        <dd>Require a valid certificate from peer during SSL
            handshake. If this is set to true then <strong>-request</strong>
            must also be set to true. (<strong>default</strong>: <em>false</em>)</dd>
        <dt><strong>-server</strong> <em>bool</em></dt>
        <dd>Handshake as server if true, else handshake as
            client.(<strong>default</strong>: <em>false</em>)</dd>
        <dt><strong>-servername</strong> <em>host</em></dt>
        <dd>Only available if the OpenSSL library the package is linked
	    against supports the TLS hostname extension for 'Server Name
	    Indication' (SNI). Use to name the logical host we are talking
	    to and expecting a certificate for</dd>
        <dt><strong>-ssl2</strong> <em>bool</em></dt>
        <dd>Enable use of SSL v2. (<strong>default</strong>: <em>false</em>)</dd>
        <dt><strong>-ssl3 </strong><em>bool</em></dt>
        <dd>Enable use of SSL v3. (<strong>default</strong>: <em>false</em>)</dd>
        <dt>-<strong>tls1</strong> <em>bool</em></dt>
        <dd>Enable use of TLS v1. (<strong>default</strong>: <em>true</em>)</dd>
        <dt>-<strong>tls1.1</strong> <em>bool</em></dt>
        <dd>Enable use of TLS v1.1 (<strong>default</strong>: <em>true</em>)</dd>
        <dt>-<strong>tls1.2</strong> <em>bool</em></dt>
        <dd>Enable use of TLS v1.2 (<strong>default</strong>: <em>true</em>)</dd>
        <dt>-<strong>tls1.3</strong> <em>bool</em></dt>
        <dd>Enable use of TLS v1.3 (<strong>default</strong>: <em>true</em>)</dd>
    </dl>
</blockquote>

<dl>
    <dt><a name="tls::unimport"><b>tls::unimport </b><i>channel</i></a></dt>
    <dd>Provided for symmetry to <strong>tls::import</strong>, this
      unstacks the SSL-enabling of a regular Tcl channel.  An error
      is thrown if TLS is not the top stacked channel type.</dd>
</dl>

<dl>
    <dt><a name="tls::ciphers protocol ?verbose?"><strong>tls::ciphers</strong>
        <em>protocol ?verbose?</em></a></dt>
    <dd>Returns list of supported ciphers based on the <em>protocol</em>
        you supply, which must be one of <em>ssl2, ssl3, or tls1</em>.
        If <em>verbose</em> is specified as true then a verbose,
        semi-human readable list is returned providing additional
        information on the nature of the cipher support. In each
        case the result is a Tcl list.</dd>
</dl>

<dl>
    <dt><a name="tls::version"><strong>tls::version</strong></a></dt>
    <dd>Returns the version string defined by OpenSSL.</dd>
</dl>

<h3><a name="CALLBACK OPTIONS">CALLBACK OPTIONS</a></h3>

<p>
As indicated above, individual channels can be given their own callbacks
to handle intermediate processing by the OpenSSL library, using the
<em>-command</em> and <em>-password</em> options passed to either of
<strong>tls::socket</strong> or <strong>tls::import</strong>.
</p>

<blockquote>
<dl>

    <dt><strong>-command</strong> <em>callback</em></dt>
    <dd>
	Invokes the specified <em>callback</em> script at
	several points during the OpenSSL handshake.
	Except as indicated below, values returned from the
	callback are ignored.
	Arguments appended to the script upon callback take one of the
	following forms:

	<br>
	<br>

	<dl>

<!--	This form of callback is disabled.

	<dt>
	  <strong>error</strong> <em>channel message</em>
	</dt>
	<dd>
	  The <em>message</em> argument contains an error message generated
	  by the OpenSSL function
	  <code>ERR_reason_error_string()</code>.
	</dd>

	<br>
-->

	<dt>
	  <strong>info</strong> <em>channel major minor message</em>
	</dt>
	<dd>
	  This form of callback is invoked by the OpenSSL function
	  <code>SSL_CTX_set_info_callback()</code>.
	  <br>
	  The <em>major</em> and <em>minor</em> arguments are used to
	  represent the state information bitmask.
	  <dl>
	  <dt>Possible values for <em>major</em> are:</dt>
	  <dd><code>handshake, alert, connect, accept</code>.</dd>
	  <dt>Possible values for <em>minor</em> are:</dt>
	  <dd><code>start, done, read, write, loop, exit</code>.</dd>
	  </dl>
	  The <em>message</em> argument is a descriptive string which may
	  be generated either by
	  <code>SSL_state_string_long()</code> or by
	  <code>SSL_alert_desc_string_long()</code>,
	  depending on context.
	</dd>

	<br>

	<dt>
	  <strong>verify</strong> <em>channel depth cert status error</em>
	</dt>
	<dd>
	  This form of callback is invoked by the OpenSSL function
	  <code>SSL_set_verify()</code>.
	  <br>
	  The <em>depth</em> argument is an integer representing the
	  current depth on the certificate chain, with
	  <code>0</code> as the subject certificate and higher values
	  denoting progressively more indirect issuer certificates.
	  <br>
	  The <em>cert</em> argument is a list of key-value pairs similar
	  to those returned by
	  <a href="#tls::status"><strong>tls::status</strong></a>.
	  <br>
	  The <em>status</em> argument is an integer representing the
	  current validity of the certificate.
	  A value of <code>0</code> means the certificate is deemed invalid.
	  A value of <code>1</code> means the certificate is deemed valid.
	  <br>
	  The <em>error</em> argument supplies the message, if any, generated
	  by
	  <code>X509_STORE_CTX_get_error()</code>.
	  <br>
	  <br>
	  The callback may override normal validation processing by explicitly
	  returning one of the above <em>status</em> values.
	</dd>

	</dl>
    </dd>

    <br>

    <dt><strong>-password</strong> <em>callback</em></dt>
    <dd>
	Invokes the specified <em>callback</em> script when OpenSSL needs to
	obtain a password.  The callback should return a string which
	represents the password to be used.
	No arguments are appended to the script upon callback.
    </dd>
</dl>
</blockquote>

<p>
Reference implementations of these callbacks are provided in the
distribution as <strong>tls::callback</strong> and
<strong>tls::password</strong> respectively.  Note that these are
<em>sample</em> implementations only.  In a more realistic deployment
you would specify your own callback scripts on each TLS channel
using the <em>-command</em> and <em>-password</em> options.
</p>

<p>
The default behavior when the <em>-command</em> option is not specified is for
TLS to process the associated library callbacks internally.
The default behavior when the <em>-password</em> option is not specified is for
TLS to process the associated library callbacks by attempting to call
<strong>tls::password</strong>.
The difference between these two behaviors is a consequence of maintaining
compatibility with earlier implementations.
</p>

<p>
The <strong>tls::debug</strong> variable provides some additional
control over these reference callbacks.  Its value is zero by default.
Higher values produce more diagnostic output, and will also force the
verify method in <strong>tls::callback</strong> to accept the
certificate, even when it is invalid.
</p>

<p>
<em>
The use of the reference callbacks <strong>tls::callback</strong> and
<strong>tls::password</strong> is not recommended.  They may be removed
from future releases.
</em>
</p>

<p>
<em>
The use of the variable <strong>tls::debug</strong> is not recommended.
It may be removed from future releases.
</em>
</p>

<h3><a name="DEBUG">DEBUG</a></h3>

TLS key logging can be enabled by setting the environment variable
<b>SSLKEYLOGFILE</b> to the name of the file to log to. Then whenever TLS
key material is generated or received it will be logged to the file.

<h3><a name="HTTPS EXAMPLE">HTTPS EXAMPLE</a></h3>

<p>This example uses a sample server.pem provided with the TLS release,
courtesy of the <strong>OpenSSL</strong> project.</p>

<pre><code>
package require http
package require tls

http::register https 443 [list ::tls::socket -autoservername true -require true -cadir /etc/ssl/certs]

set tok [http::geturl https://www.tcl.tk/]
</code></pre>

<h3><a name="SPECIAL CONSIDERATIONS">SPECIAL CONSIDERATIONS</a></h3>

<p>The capabilities of this package can vary enormously based
upon how your OpenSSL library was configured and built. At the
most macro-level OpenSSL supports a &quot;no patents&quot; build,
which disables RSA, IDEA, RC(2,4,5) and SSL2 - if your OpenSSL is
configured this way then you will need to build TLS with the
-DNO_PATENTS option - and the resultant module will function
correctly and also support ADH certificate-less encryption,
however you will be unable to utilize this to speak to normal Web
Servers, which typically require RSA support. Please see <a
href="http://www.openssl.org/">http://www.openssl.org/</a> for
more information on the whole issue of patents and US export
restrictions. </p>

<h3><a name="SEE ALSO">SEE ALSO</a></h3>

<p><strong>socket</strong>, <strong>fileevent, </strong><a
href="http://www.openssl.org/"><strong>OpenSSL</strong></a></p>

<hr>

<pre>
Copyright &copy; 1999 Matt Newman.
Copyright &copy; 2004 Starfish Systems.
</pre>
</body>
</html>

Deleted gen_dh_params version [90177a1658].

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#! /usr/bin/env sh

bits='2048'
option_fallback='0'
for arg in "$@"; do
	case "${arg}" in
		fallback)
			option_fallback='1'
			;;
		bits=*)
			bits="`echo "${arg}" | cut -f 2 -d =`"
			;;
	esac
done

openssl_dhparam() {
	if openssl dhparam -C "$@" | sed	\
	    -e 's/^\(static \)*DH \*get_dh[0-9]*/static DH *get_dhParams/'	\
	    -e '/^-----BEGIN DH PARAMETERS-----$/,/^-----END DH PARAMETERS-----$/ d;/^#/ d'
	then
		return 0
	fi

	return 1
}

gen_dh_params_openssl() {
	openssl_dhparam "${bits}" < /dev/null || return 1
	return 0
}

gen_dh_params_remote() {
	url="https://2ton.com.au/dhparam/${bits}"

	r_input="`curl -sS "${url}"`" || \
		r_input="`wget -O - -o /dev/null "${url}"`" || return 1

	if r_output="`echo "${r_input}" | openssl_dhparam`"; then
		echo "${r_output}"

		return 0
	fi

	return 1
}

gen_dh_params_fallback() {
	cat << \_EOF_
DH *get_dhParams(void) {
	static unsigned char dhp[] = {
_EOF_
	case "${bits}" in
		2048)
			cat << \_EOF_
		0xC1,0x51,0x58,0x69,0xFB,0xE8,0x6C,0x47,0x2B,0x86,0x61,0x4F,
		0x20,0x2E,0xD3,0xFC,0x19,0xEE,0xB8,0xF3,0x35,0x7D,0xBA,0x86,
		0x2A,0xC3,0xC8,0x6E,0xF4,0x99,0x75,0x65,0xD3,0x7A,0x9E,0xDF,
		0xD4,0x1F,0x88,0xE3,0x17,0xFC,0xA1,0xED,0xA2,0xB6,0x77,0x84,
		0xAA,0x08,0xF2,0x97,0x59,0x7A,0xA0,0x03,0x0D,0x3E,0x7E,0x6D,
		0x65,0x6A,0xA4,0xEA,0x54,0xA9,0x52,0x5F,0x63,0xB4,0xBC,0x98,
		0x4E,0xF6,0xE1,0xA4,0xEE,0x16,0x0A,0xB0,0x01,0xBD,0x9F,0xA1,
		0xE8,0x23,0x29,0x56,0x40,0x95,0x13,0xEB,0xCB,0xD5,0xFC,0x76,
		0x1A,0x41,0x26,0xCE,0x20,0xEB,0x30,0x10,0x17,0x07,0xE1,0x8C,
		0xAC,0x57,0x37,0x8B,0xE8,0x01,0xDE,0xA9,0xEF,0xA4,0xC2,0xA4,
		0x6E,0x48,0x25,0x11,0x33,0x11,0xD4,0x52,0x79,0x87,0x9F,0x75,
		0x61,0xF7,0x9C,0x7D,0x36,0x41,0xCB,0xEC,0x8F,0xEA,0x4A,0x47,
		0x6A,0x36,0x37,0x75,0xB9,0x8E,0xF5,0x5F,0x67,0xCF,0x1F,0xD8,
		0xCA,0x70,0x42,0xC7,0xA2,0xED,0x0F,0x7D,0xBE,0x43,0x08,0x28,
		0x66,0x3D,0xDD,0x87,0x0D,0x61,0x6E,0xD0,0xE7,0x49,0xD1,0x70,
		0xA9,0x4D,0xD5,0xFD,0xED,0xF2,0x6D,0x32,0x17,0x97,0x5B,0x06,
		0x60,0x9C,0x5F,0xA3,0x5D,0x34,0x14,0x7E,0x63,0x54,0xE4,0x7E,
		0x09,0x8F,0xBB,0x8E,0xA0,0xD0,0x96,0xAC,0x30,0x20,0x39,0x3B,
		0x8C,0x92,0x65,0x37,0x0A,0x8F,0xEC,0x72,0x8B,0x61,0x7D,0x62,
		0x24,0x54,0xE9,0x1D,0x01,0x68,0x89,0xC4,0x7B,0x3C,0x48,0x62,
		0x9B,0x83,0x11,0x3A,0x0B,0x0D,0xEF,0x5A,0xE4,0x7A,0xA0,0x69,
		0xF4,0x54,0xB5,0x5B
_EOF_
			;;
		4096)
			cat << \_EOF_
		0xE3,0xA6,0x64,0x2D,0xE8,0x01,0xD0,0x81,0x67,0xCF,0x12,0x38,
		0x5C,0x99,0x48,0x37,0xD7,0x0F,0x8D,0x10,0xEA,0x88,0x31,0x6D,
		0xD4,0x69,0x10,0x57,0x94,0x8E,0xE8,0xF9,0x22,0xFE,0x0D,0x55,
		0xC6,0x9D,0x29,0x7E,0x45,0x89,0xAA,0xD5,0x98,0xD2,0x98,0xFE,
		0x03,0x54,0x5E,0x91,0x4C,0x4A,0xA7,0xFF,0x1F,0x2F,0x41,0x34,
		0x03,0x9B,0x64,0x0A,0xFA,0x53,0xC7,0x45,0xD7,0x41,0x3F,0x16,
		0xCD,0x40,0x9E,0xF2,0xC3,0xBD,0x49,0x2C,0x0C,0x35,0x9B,0x2F,
		0x7D,0xA5,0x07,0x58,0xD1,0xFD,0xE9,0x6B,0x7A,0x54,0xA9,0xC2,
		0xAC,0x09,0x7F,0x58,0xD5,0x52,0xB2,0x8A,0x5D,0xEC,0x41,0x23,
		0x93,0xF4,0x05,0x8B,0x46,0x0E,0x46,0x46,0xC5,0xB4,0x75,0xCB,
		0x1D,0x1D,0x6E,0x81,0xC5,0x55,0x24,0x1D,0x09,0x23,0xE2,0x3F,
		0xF4,0x48,0x60,0xD7,0x95,0xC0,0x8B,0x71,0x11,0xA6,0x0B,0x04,
		0x29,0xB6,0xAD,0xBF,0x05,0x6F,0x3B,0xB3,0x70,0x34,0xA5,0xF9,
		0x14,0x81,0xD5,0xEA,0x3C,0x3C,0x38,0x44,0xCF,0x3D,0x32,0x29,
		0x92,0xD5,0x1A,0x3C,0x25,0xB7,0x3D,0x42,0x17,0x96,0x8B,0xEE,
		0xC3,0xE7,0x61,0x3A,0x51,0xC5,0x2A,0x51,0xBA,0x8F,0xD0,0x4C,
		0x51,0x19,0xBE,0x35,0x1A,0x2E,0x9B,0x55,0x02,0xA7,0x5A,0xBF,
		0xA2,0x00,0xF9,0xFF,0x4B,0xCA,0x76,0x25,0x3D,0x3B,0xB1,0x04,
		0x9A,0x6D,0x7E,0x12,0xBB,0xBE,0x6A,0x5A,0xB2,0x87,0x8B,0xBC,
		0xB9,0x7C,0x6A,0xE7,0x5E,0xC3,0x41,0x91,0x24,0xAD,0x5C,0xC7,
		0x3F,0x24,0x77,0x17,0x53,0x9D,0x6A,0x5A,0x8E,0x39,0x00,0x1B,
		0x49,0x93,0x07,0x6C,0x67,0xF3,0x1C,0x24,0x57,0x76,0x5E,0x78,
		0xF1,0x8D,0x81,0xFF,0x81,0xD0,0x1B,0x7A,0x04,0xAC,0x7D,0x5B,
		0x35,0x5F,0x45,0x25,0xAE,0x30,0x11,0x5B,0x34,0x17,0xE7,0x2D,
		0x9D,0xE7,0x56,0x90,0x75,0x24,0x0C,0x01,0x84,0x38,0x1A,0x62,
		0x55,0x43,0x66,0x21,0x29,0x44,0xE5,0x4B,0x90,0x9E,0x48,0x92,
		0x0B,0x96,0x2A,0xD0,0xCD,0x3A,0xA4,0xBE,0xE7,0xDC,0xA3,0xFB,
		0x0F,0xA3,0x9B,0xF7,0xA9,0x26,0x5A,0xCC,0x7F,0x4B,0x1A,0x5F,
		0xD6,0x32,0xA9,0x71,0xA1,0x10,0xE5,0x7C,0x4F,0x59,0xFE,0x3D,
		0x60,0x41,0x0A,0xA7,0x68,0x60,0x1E,0xDE,0x6E,0xF7,0x71,0x4D,
		0xBE,0xC8,0x49,0xF8,0x57,0x7C,0x99,0x6E,0x59,0x32,0xF8,0x26,
		0xF1,0x25,0x94,0xC5,0xDA,0x78,0xBB,0x48,0x97,0xE8,0xDF,0x70,
		0x05,0x86,0xE2,0xE7,0x35,0xD7,0x3F,0x23,0x18,0xAA,0x86,0x53,
		0x6B,0x0D,0xEC,0x93,0x89,0xA4,0xD0,0xDA,0xE3,0xDD,0x11,0x06,
		0xCE,0xDD,0x4D,0xD3,0xBF,0x9A,0x71,0x5E,0xA7,0x39,0x9A,0x31,
		0x4B,0x56,0xB3,0x22,0x1B,0x81,0xDC,0xBE,0x0E,0x7B,0x8A,0xAA,
		0x37,0x61,0xED,0x4D,0xEE,0x1A,0xC3,0x54,0xBC,0x4F,0x0E,0x61,
		0x38,0x00,0xAA,0x45,0x18,0xC2,0xDF,0xA5,0x3D,0x75,0x98,0x16,
		0xBB,0x0A,0x39,0x9A,0xFE,0x1F,0x53,0xAD,0xC3,0xEA,0xDF,0xC6,
		0x3D,0xD5,0xBA,0xC8,0xF3,0x03,0x3A,0x3B,0x8D,0x03,0x84,0xCD,
		0x86,0xED,0x42,0xDB,0xD8,0xE0,0xC1,0xAF,0xB1,0xDD,0xB5,0x35,
		0x28,0xB1,0x02,0xE2,0x9B,0x12,0x2E,0x12,0x02,0x1C,0x7D,0x3B,
		0x3B,0x8D,0xAF,0x9D,0x3F,0xD6,0xE0,0x53
_EOF_
			;;
		8192)
			cat << \_EOF_
		0x9C,0xC3,0x9C,0x6C,0x61,0xC5,0xFA,0x32,0xB8,0x86,0x5A,0x38,
		0xED,0x46,0x5C,0x81,0x08,0xD9,0x69,0x11,0x44,0x50,0x97,0x4D,
		0xCB,0x09,0xFC,0xD1,0x68,0x9F,0x4E,0x96,0x10,0xFF,0xDA,0xD7,
		0xA3,0xC9,0x74,0xE9,0xBA,0xDB,0x6B,0x04,0xB8,0xBF,0xF4,0x72,
		0x6D,0x18,0xB1,0xF4,0x9A,0x77,0xA9,0x94,0xE8,0x13,0xF7,0x1D,
		0x92,0x12,0x7B,0xB9,0x92,0x71,0x54,0x83,0x73,0x71,0xF6,0xA7,
		0x12,0xEC,0x62,0xB8,0xDC,0xA1,0x2E,0x00,0x88,0x53,0xF3,0x01,
		0xAF,0x52,0xF7,0xBB,0xE1,0x7B,0xF1,0x2A,0xD9,0xEF,0x21,0xD4,
		0x88,0x18,0xEC,0x98,0x72,0x05,0x60,0xEC,0x5A,0x1C,0x2D,0x0D,
		0x43,0x5D,0x19,0xD6,0x1D,0xD2,0x3C,0x8E,0xD3,0x43,0x62,0x6C,
		0x32,0x14,0x40,0xD6,0xBE,0xE7,0x84,0x6E,0x76,0xA5,0x90,0x14,
		0xC8,0x40,0xA3,0x2E,0x6A,0x3D,0x3B,0x43,0x5D,0xB1,0x3F,0x5F,
		0x6E,0xD5,0x1B,0xE0,0x20,0x82,0x8A,0xEE,0xC5,0x65,0x05,0x62,
		0xB5,0x96,0xEE,0x27,0xF1,0xF3,0x32,0xE4,0x00,0x7D,0x6A,0x6C,
		0x45,0x05,0x00,0x4A,0x9C,0x9D,0xB9,0x19,0x77,0xC5,0x31,0xEE,
		0x6E,0x30,0x54,0x0D,0x08,0xFF,0x19,0xC4,0x34,0xD7,0x9F,0xC9,
		0x5B,0x89,0x22,0x4E,0xC0,0xBF,0x16,0x3E,0x10,0xBB,0x58,0xBA,
		0x31,0x5C,0xDC,0xD3,0xD9,0xFF,0x73,0xD9,0x29,0x66,0x4A,0xE6,
		0xB0,0xBA,0x4B,0x1A,0x3C,0x5E,0xA7,0x19,0x19,0xD8,0x84,0xD2,
		0x54,0x47,0x86,0xE3,0xCA,0xF7,0x8A,0xC9,0xDB,0x3A,0x5A,0xB7,
		0xB7,0xA4,0x27,0x57,0x53,0x34,0x9D,0xF2,0xF2,0x26,0x0D,0xAC,
		0xC5,0xFA,0xE9,0x9A,0xC5,0xDA,0x9D,0xA3,0x2E,0x40,0x85,0x92,
		0xF4,0x2F,0xEA,0xF7,0xA4,0x6F,0x36,0x36,0x41,0xFA,0x41,0x5B,
		0x02,0x4E,0xFC,0xDF,0xBB,0x5F,0x74,0x7B,0xFF,0x81,0xEB,0x60,
		0x08,0x55,0x91,0xBF,0x0C,0x1E,0x80,0xB3,0xC3,0x39,0x5A,0x5D,
		0x08,0x3E,0x3C,0xB8,0x76,0xE1,0x92,0x37,0xF1,0xCC,0x0C,0x3F,
		0x46,0xED,0x51,0x2D,0x6F,0x57,0x05,0x47,0x78,0xB5,0xF1,0x6B,
		0x7C,0xEA,0x51,0xA6,0x88,0xD8,0x63,0x18,0x8E,0x42,0x0E,0x50,
		0xF1,0xAC,0xD0,0x75,0x0A,0xB5,0x9B,0xD5,0x07,0x3A,0xF0,0x75,
		0x04,0x27,0xC5,0xBD,0xA6,0xAE,0x18,0xEE,0x30,0x22,0x70,0x56,
		0x09,0xA7,0xC2,0x26,0x61,0x3B,0x56,0x27,0x82,0x97,0xF6,0xFE,
		0x7A,0x3D,0x17,0x3C,0xC2,0x27,0x39,0xD3,0xBB,0x80,0xB6,0x42,
		0x4D,0x20,0xB1,0xC1,0x89,0x00,0x77,0x8C,0x6F,0xDD,0x6F,0x1D,
		0x44,0xAD,0x1B,0x92,0x6F,0xD6,0x56,0x11,0x6E,0x12,0x5C,0x7F,
		0x69,0x33,0x17,0x7A,0x20,0xE8,0x5D,0x81,0xC0,0xDD,0x1E,0xBE,
		0xEF,0x62,0x81,0xF2,0xEA,0xEA,0xDE,0x7B,0xA1,0x8C,0x7D,0x91,
		0x8B,0x62,0xBD,0x13,0x53,0x41,0xB9,0x45,0x65,0x11,0xB0,0x00,
		0x7C,0xA6,0x12,0x19,0xDC,0x77,0x26,0xD6,0x13,0xC8,0xDF,0x47,
		0x7A,0xCE,0xEB,0xD8,0xC3,0xDF,0x7F,0x21,0x27,0x5C,0x4A,0x6B,
		0xE9,0x27,0xC7,0x60,0x56,0x6E,0xA2,0x5F,0xF2,0xAD,0xB0,0xC3,
		0x97,0xF6,0xE9,0xDF,0xFB,0x1F,0xE9,0x17,0x06,0x36,0xC5,0x10,
		0xC0,0x49,0xD5,0x59,0xEA,0x97,0x27,0xE7,0x43,0x64,0xDE,0x31,
		0xD7,0x14,0x9D,0xDC,0x78,0xC5,0x0E,0xEF,0x6A,0x76,0x57,0x33,
		0xAF,0x54,0xB1,0x30,0xD0,0x91,0x24,0x09,0x24,0x40,0xD5,0x00,
		0x9B,0x84,0xF7,0xFC,0xAD,0x7F,0x41,0xBB,0x00,0x84,0x49,0x49,
		0xA1,0x43,0x44,0xA0,0xA3,0xD1,0xBA,0x49,0xD8,0xCE,0x60,0x90,
		0x07,0x20,0xCD,0xC8,0xEB,0xD4,0x02,0x71,0xB8,0x60,0xDF,0xA9,
		0x6B,0xEC,0x25,0x8D,0x71,0x28,0x6A,0x2E,0xF6,0x52,0xF0,0x24,
		0xF3,0xF5,0x1E,0x00,0x7B,0x7C,0xCA,0x6A,0x6B,0xD7,0x4F,0x3E,
		0x5E,0x4B,0x85,0xCF,0xF1,0x67,0x9F,0x89,0x5A,0xF4,0x3A,0x29,
		0x73,0xFF,0xDC,0x68,0x25,0xA5,0x60,0x10,0xFC,0x9A,0x73,0x78,
		0xEA,0x28,0xC1,0x11,0x3B,0x07,0x46,0xEB,0xDE,0xF1,0xF3,0x2E,
		0xC7,0xC1,0x24,0xFB,0xC2,0x6C,0x4A,0x38,0x6C,0x9A,0x7F,0x87,
		0x76,0x30,0xF4,0xCC,0x21,0x49,0xC1,0x66,0x3D,0x95,0xE4,0xAA,
		0xE2,0x75,0x08,0xAB,0xEF,0xA2,0x51,0x30,0xFE,0x86,0xD0,0xE1,
		0x4C,0x05,0x0C,0xDE,0x63,0x93,0xB3,0x37,0x11,0x81,0xB5,0x8F,
		0x84,0xE2,0x48,0xC1,0xF6,0xF6,0xD6,0x50,0x91,0xDE,0x61,0x14,
		0x7B,0x6E,0x88,0x95,0x30,0x52,0xEF,0xA5,0x03,0x99,0xBE,0x50,
		0x97,0xE3,0x25,0x8F,0x50,0x01,0x9C,0x54,0x99,0x2E,0x4C,0x6A,
		0x61,0xD7,0x0D,0xB9,0xFE,0xE9,0xFC,0x37,0xC1,0x6A,0xDF,0x84,
		0xF4,0x5A,0x7E,0xBA,0x95,0x23,0x5C,0x41,0x35,0xDB,0xF9,0x1E,
		0x93,0xC6,0x29,0x8E,0x57,0x28,0x3D,0x3A,0xDE,0x31,0x86,0x69,
		0x3D,0xC3,0x8F,0x27,0x62,0x84,0x77,0x58,0x02,0x7F,0x90,0x76,
		0x2D,0xDF,0x45,0x70,0x3F,0x04,0x44,0x5C,0xD1,0x8C,0x73,0x5E,
		0xB5,0xC8,0x9A,0x72,0x3E,0xA9,0x4D,0xFC,0xDC,0xAC,0x7B,0xFF,
		0x54,0xC2,0x7B,0x3B,0x11,0x6B,0x14,0xA3,0x50,0xDB,0x14,0xB0,
		0x89,0x5A,0xE7,0xDD,0xBF,0x1E,0x27,0xBC,0xC6,0x30,0xC4,0xD6,
		0x74,0x13,0x26,0xBA,0x67,0x15,0x56,0x42,0xED,0xDA,0xFF,0x9F,
		0x4B,0xBE,0x3E,0xBC,0xD0,0xA8,0xCA,0xB1,0x8E,0xB7,0xD0,0xFF,
		0xE0,0x87,0x67,0xE4,0x51,0xA4,0xB9,0xF3,0x47,0xFA,0x13,0xFA,
		0xB1,0xDA,0xB6,0xF8,0xEC,0x6D,0x0B,0x2E,0x99,0x37,0xB8,0x66,
		0x80,0x83,0x3A,0xCA,0x46,0x6D,0xDC,0x24,0x9F,0x83,0x54,0xA9,
		0x70,0x62,0x21,0x6D,0x28,0x0E,0x63,0x8B,0x91,0x7F,0xFF,0xCD,
		0x80,0xF5,0xAC,0xE6,0x90,0x97,0x3C,0xB5,0xE8,0x00,0x90,0x96,
		0xB7,0x26,0x2C,0xB2,0x9C,0xEF,0xBF,0xCC,0xD6,0xA8,0x01,0xA0,
		0xFC,0x20,0x61,0xBD,0xA9,0xEE,0x5F,0x8B,0x32,0x1C,0x62,0xF0,
		0x94,0x81,0x86,0x30,0x1B,0xB1,0x12,0xF5,0x58,0x52,0x8D,0xE4,
		0x99,0x43,0x60,0x9B,0x24,0xF8,0x8B,0x14,0x63,0x0C,0x93,0xF4,
		0x7A,0x70,0x0A,0xE1,0x45,0x16,0x92,0x9D,0x12,0x50,0x05,0x3C,
		0x05,0xEE,0x40,0x32,0x4D,0x99,0xFF,0xF6,0x14,0x25,0xF6,0xDF,
		0xD8,0xDA,0xE0,0x85,0x1B,0x3F,0x2C,0x50,0xD9,0x01,0x4B,0x01,
		0x65,0x2C,0x75,0x32,0xBA,0x6F,0x00,0x56,0xD3,0x83,0xC8,0x44,
		0x9B,0x62,0x3F,0x88,0xA7,0x18,0xAC,0x69,0xBB,0xF3,0x14,0xD3,
		0xA4,0x09,0x6C,0x4A,0x14,0x0C,0x55,0x95,0x7A,0x33,0x21,0x99,
		0x0F,0x01,0x00,0x5D,0x2D,0xAB,0xEB,0x7A,0x76,0x03,0xE7,0x2A,
		0x1D,0xC2,0x86,0x4B
_EOF_
			;;
		*)
			return 1
			;;
	esac

	cat << \_EOF_
	};
	static unsigned char dhg[] = {
		0x02,
	};

	DH *dh = DH_new();;
	BIGNUM *dhp_bn, *dhg_bn;

	if (dh == NULL) {
		return NULL;
	}

	dhp_bn = BN_bin2bn(dhp, sizeof (dhp), NULL);
	dhg_bn = BN_bin2bn(dhg, sizeof (dhg), NULL);

#ifdef TCLTLS_OPENSSL_PRE_1_1_API
	dh->p = dhp_bn;
	dh->g = dhg_bn;

	if (dhp_bn == NULL || dhg_bn == NULL) {
#else
	if (dhp_bn == NULL || dhg_bn == NULL || !DH_set0_pqg(dh, dhp_bn, NULL, dhg_bn)) {
#endif
		DH_free(dh);
		BN_free(dhp_bn);
		BN_free(dhg_bn);
		return(NULL);
	}

	return(dh);
}
_EOF_

	return 0
}

# Enable support for giving the same DH params each time
if [ "${option_fallback}" = '1' ]; then
	gen_dh_params_fallback && exit 0

	echo "Unable to generate fallback parameters for DH of ${bits} bits" >&2

	exit 1
fi

echo "*****************************" >&2
echo "** Generating DH Primes.   **" >&2
echo "** This will take a while. **" >&2
echo "*****************************" >&2
echo "Use OpenSSL" >&2
gen_dh_params_openssl && exit 0
echo "Use Remote" >&2
gen_dh_params_remote && exit 0
echo "Use fallback" >&2
gen_dh_params_fallback && exit 0

echo "Unable to generate parameters for DH of ${bits} bits" >&2

exit 1

Added generic/gen_dh_params version [90177a1658].

























































































































































































































































































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#! /usr/bin/env sh

bits='2048'
option_fallback='0'
for arg in "$@"; do
	case "${arg}" in
		fallback)
			option_fallback='1'
			;;
		bits=*)
			bits="`echo "${arg}" | cut -f 2 -d =`"
			;;
	esac
done

openssl_dhparam() {
	if openssl dhparam -C "$@" | sed	\
	    -e 's/^\(static \)*DH \*get_dh[0-9]*/static DH *get_dhParams/'	\
	    -e '/^-----BEGIN DH PARAMETERS-----$/,/^-----END DH PARAMETERS-----$/ d;/^#/ d'
	then
		return 0
	fi

	return 1
}

gen_dh_params_openssl() {
	openssl_dhparam "${bits}" < /dev/null || return 1
	return 0
}

gen_dh_params_remote() {
	url="https://2ton.com.au/dhparam/${bits}"

	r_input="`curl -sS "${url}"`" || \
		r_input="`wget -O - -o /dev/null "${url}"`" || return 1

	if r_output="`echo "${r_input}" | openssl_dhparam`"; then
		echo "${r_output}"

		return 0
	fi

	return 1
}

gen_dh_params_fallback() {
	cat << \_EOF_
DH *get_dhParams(void) {
	static unsigned char dhp[] = {
_EOF_
	case "${bits}" in
		2048)
			cat << \_EOF_
		0xC1,0x51,0x58,0x69,0xFB,0xE8,0x6C,0x47,0x2B,0x86,0x61,0x4F,
		0x20,0x2E,0xD3,0xFC,0x19,0xEE,0xB8,0xF3,0x35,0x7D,0xBA,0x86,
		0x2A,0xC3,0xC8,0x6E,0xF4,0x99,0x75,0x65,0xD3,0x7A,0x9E,0xDF,
		0xD4,0x1F,0x88,0xE3,0x17,0xFC,0xA1,0xED,0xA2,0xB6,0x77,0x84,
		0xAA,0x08,0xF2,0x97,0x59,0x7A,0xA0,0x03,0x0D,0x3E,0x7E,0x6D,
		0x65,0x6A,0xA4,0xEA,0x54,0xA9,0x52,0x5F,0x63,0xB4,0xBC,0x98,
		0x4E,0xF6,0xE1,0xA4,0xEE,0x16,0x0A,0xB0,0x01,0xBD,0x9F,0xA1,
		0xE8,0x23,0x29,0x56,0x40,0x95,0x13,0xEB,0xCB,0xD5,0xFC,0x76,
		0x1A,0x41,0x26,0xCE,0x20,0xEB,0x30,0x10,0x17,0x07,0xE1,0x8C,
		0xAC,0x57,0x37,0x8B,0xE8,0x01,0xDE,0xA9,0xEF,0xA4,0xC2,0xA4,
		0x6E,0x48,0x25,0x11,0x33,0x11,0xD4,0x52,0x79,0x87,0x9F,0x75,
		0x61,0xF7,0x9C,0x7D,0x36,0x41,0xCB,0xEC,0x8F,0xEA,0x4A,0x47,
		0x6A,0x36,0x37,0x75,0xB9,0x8E,0xF5,0x5F,0x67,0xCF,0x1F,0xD8,
		0xCA,0x70,0x42,0xC7,0xA2,0xED,0x0F,0x7D,0xBE,0x43,0x08,0x28,
		0x66,0x3D,0xDD,0x87,0x0D,0x61,0x6E,0xD0,0xE7,0x49,0xD1,0x70,
		0xA9,0x4D,0xD5,0xFD,0xED,0xF2,0x6D,0x32,0x17,0x97,0x5B,0x06,
		0x60,0x9C,0x5F,0xA3,0x5D,0x34,0x14,0x7E,0x63,0x54,0xE4,0x7E,
		0x09,0x8F,0xBB,0x8E,0xA0,0xD0,0x96,0xAC,0x30,0x20,0x39,0x3B,
		0x8C,0x92,0x65,0x37,0x0A,0x8F,0xEC,0x72,0x8B,0x61,0x7D,0x62,
		0x24,0x54,0xE9,0x1D,0x01,0x68,0x89,0xC4,0x7B,0x3C,0x48,0x62,
		0x9B,0x83,0x11,0x3A,0x0B,0x0D,0xEF,0x5A,0xE4,0x7A,0xA0,0x69,
		0xF4,0x54,0xB5,0x5B
_EOF_
			;;
		4096)
			cat << \_EOF_
		0xE3,0xA6,0x64,0x2D,0xE8,0x01,0xD0,0x81,0x67,0xCF,0x12,0x38,
		0x5C,0x99,0x48,0x37,0xD7,0x0F,0x8D,0x10,0xEA,0x88,0x31,0x6D,
		0xD4,0x69,0x10,0x57,0x94,0x8E,0xE8,0xF9,0x22,0xFE,0x0D,0x55,
		0xC6,0x9D,0x29,0x7E,0x45,0x89,0xAA,0xD5,0x98,0xD2,0x98,0xFE,
		0x03,0x54,0x5E,0x91,0x4C,0x4A,0xA7,0xFF,0x1F,0x2F,0x41,0x34,
		0x03,0x9B,0x64,0x0A,0xFA,0x53,0xC7,0x45,0xD7,0x41,0x3F,0x16,
		0xCD,0x40,0x9E,0xF2,0xC3,0xBD,0x49,0x2C,0x0C,0x35,0x9B,0x2F,
		0x7D,0xA5,0x07,0x58,0xD1,0xFD,0xE9,0x6B,0x7A,0x54,0xA9,0xC2,
		0xAC,0x09,0x7F,0x58,0xD5,0x52,0xB2,0x8A,0x5D,0xEC,0x41,0x23,
		0x93,0xF4,0x05,0x8B,0x46,0x0E,0x46,0x46,0xC5,0xB4,0x75,0xCB,
		0x1D,0x1D,0x6E,0x81,0xC5,0x55,0x24,0x1D,0x09,0x23,0xE2,0x3F,
		0xF4,0x48,0x60,0xD7,0x95,0xC0,0x8B,0x71,0x11,0xA6,0x0B,0x04,
		0x29,0xB6,0xAD,0xBF,0x05,0x6F,0x3B,0xB3,0x70,0x34,0xA5,0xF9,
		0x14,0x81,0xD5,0xEA,0x3C,0x3C,0x38,0x44,0xCF,0x3D,0x32,0x29,
		0x92,0xD5,0x1A,0x3C,0x25,0xB7,0x3D,0x42,0x17,0x96,0x8B,0xEE,
		0xC3,0xE7,0x61,0x3A,0x51,0xC5,0x2A,0x51,0xBA,0x8F,0xD0,0x4C,
		0x51,0x19,0xBE,0x35,0x1A,0x2E,0x9B,0x55,0x02,0xA7,0x5A,0xBF,
		0xA2,0x00,0xF9,0xFF,0x4B,0xCA,0x76,0x25,0x3D,0x3B,0xB1,0x04,
		0x9A,0x6D,0x7E,0x12,0xBB,0xBE,0x6A,0x5A,0xB2,0x87,0x8B,0xBC,
		0xB9,0x7C,0x6A,0xE7,0x5E,0xC3,0x41,0x91,0x24,0xAD,0x5C,0xC7,
		0x3F,0x24,0x77,0x17,0x53,0x9D,0x6A,0x5A,0x8E,0x39,0x00,0x1B,
		0x49,0x93,0x07,0x6C,0x67,0xF3,0x1C,0x24,0x57,0x76,0x5E,0x78,
		0xF1,0x8D,0x81,0xFF,0x81,0xD0,0x1B,0x7A,0x04,0xAC,0x7D,0x5B,
		0x35,0x5F,0x45,0x25,0xAE,0x30,0x11,0x5B,0x34,0x17,0xE7,0x2D,
		0x9D,0xE7,0x56,0x90,0x75,0x24,0x0C,0x01,0x84,0x38,0x1A,0x62,
		0x55,0x43,0x66,0x21,0x29,0x44,0xE5,0x4B,0x90,0x9E,0x48,0x92,
		0x0B,0x96,0x2A,0xD0,0xCD,0x3A,0xA4,0xBE,0xE7,0xDC,0xA3,0xFB,
		0x0F,0xA3,0x9B,0xF7,0xA9,0x26,0x5A,0xCC,0x7F,0x4B,0x1A,0x5F,
		0xD6,0x32,0xA9,0x71,0xA1,0x10,0xE5,0x7C,0x4F,0x59,0xFE,0x3D,
		0x60,0x41,0x0A,0xA7,0x68,0x60,0x1E,0xDE,0x6E,0xF7,0x71,0x4D,
		0xBE,0xC8,0x49,0xF8,0x57,0x7C,0x99,0x6E,0x59,0x32,0xF8,0x26,
		0xF1,0x25,0x94,0xC5,0xDA,0x78,0xBB,0x48,0x97,0xE8,0xDF,0x70,
		0x05,0x86,0xE2,0xE7,0x35,0xD7,0x3F,0x23,0x18,0xAA,0x86,0x53,
		0x6B,0x0D,0xEC,0x93,0x89,0xA4,0xD0,0xDA,0xE3,0xDD,0x11,0x06,
		0xCE,0xDD,0x4D,0xD3,0xBF,0x9A,0x71,0x5E,0xA7,0x39,0x9A,0x31,
		0x4B,0x56,0xB3,0x22,0x1B,0x81,0xDC,0xBE,0x0E,0x7B,0x8A,0xAA,
		0x37,0x61,0xED,0x4D,0xEE,0x1A,0xC3,0x54,0xBC,0x4F,0x0E,0x61,
		0x38,0x00,0xAA,0x45,0x18,0xC2,0xDF,0xA5,0x3D,0x75,0x98,0x16,
		0xBB,0x0A,0x39,0x9A,0xFE,0x1F,0x53,0xAD,0xC3,0xEA,0xDF,0xC6,
		0x3D,0xD5,0xBA,0xC8,0xF3,0x03,0x3A,0x3B,0x8D,0x03,0x84,0xCD,
		0x86,0xED,0x42,0xDB,0xD8,0xE0,0xC1,0xAF,0xB1,0xDD,0xB5,0x35,
		0x28,0xB1,0x02,0xE2,0x9B,0x12,0x2E,0x12,0x02,0x1C,0x7D,0x3B,
		0x3B,0x8D,0xAF,0x9D,0x3F,0xD6,0xE0,0x53
_EOF_
			;;
		8192)
			cat << \_EOF_
		0x9C,0xC3,0x9C,0x6C,0x61,0xC5,0xFA,0x32,0xB8,0x86,0x5A,0x38,
		0xED,0x46,0x5C,0x81,0x08,0xD9,0x69,0x11,0x44,0x50,0x97,0x4D,
		0xCB,0x09,0xFC,0xD1,0x68,0x9F,0x4E,0x96,0x10,0xFF,0xDA,0xD7,
		0xA3,0xC9,0x74,0xE9,0xBA,0xDB,0x6B,0x04,0xB8,0xBF,0xF4,0x72,
		0x6D,0x18,0xB1,0xF4,0x9A,0x77,0xA9,0x94,0xE8,0x13,0xF7,0x1D,
		0x92,0x12,0x7B,0xB9,0x92,0x71,0x54,0x83,0x73,0x71,0xF6,0xA7,
		0x12,0xEC,0x62,0xB8,0xDC,0xA1,0x2E,0x00,0x88,0x53,0xF3,0x01,
		0xAF,0x52,0xF7,0xBB,0xE1,0x7B,0xF1,0x2A,0xD9,0xEF,0x21,0xD4,
		0x88,0x18,0xEC,0x98,0x72,0x05,0x60,0xEC,0x5A,0x1C,0x2D,0x0D,
		0x43,0x5D,0x19,0xD6,0x1D,0xD2,0x3C,0x8E,0xD3,0x43,0x62,0x6C,
		0x32,0x14,0x40,0xD6,0xBE,0xE7,0x84,0x6E,0x76,0xA5,0x90,0x14,
		0xC8,0x40,0xA3,0x2E,0x6A,0x3D,0x3B,0x43,0x5D,0xB1,0x3F,0x5F,
		0x6E,0xD5,0x1B,0xE0,0x20,0x82,0x8A,0xEE,0xC5,0x65,0x05,0x62,
		0xB5,0x96,0xEE,0x27,0xF1,0xF3,0x32,0xE4,0x00,0x7D,0x6A,0x6C,
		0x45,0x05,0x00,0x4A,0x9C,0x9D,0xB9,0x19,0x77,0xC5,0x31,0xEE,
		0x6E,0x30,0x54,0x0D,0x08,0xFF,0x19,0xC4,0x34,0xD7,0x9F,0xC9,
		0x5B,0x89,0x22,0x4E,0xC0,0xBF,0x16,0x3E,0x10,0xBB,0x58,0xBA,
		0x31,0x5C,0xDC,0xD3,0xD9,0xFF,0x73,0xD9,0x29,0x66,0x4A,0xE6,
		0xB0,0xBA,0x4B,0x1A,0x3C,0x5E,0xA7,0x19,0x19,0xD8,0x84,0xD2,
		0x54,0x47,0x86,0xE3,0xCA,0xF7,0x8A,0xC9,0xDB,0x3A,0x5A,0xB7,
		0xB7,0xA4,0x27,0x57,0x53,0x34,0x9D,0xF2,0xF2,0x26,0x0D,0xAC,
		0xC5,0xFA,0xE9,0x9A,0xC5,0xDA,0x9D,0xA3,0x2E,0x40,0x85,0x92,
		0xF4,0x2F,0xEA,0xF7,0xA4,0x6F,0x36,0x36,0x41,0xFA,0x41,0x5B,
		0x02,0x4E,0xFC,0xDF,0xBB,0x5F,0x74,0x7B,0xFF,0x81,0xEB,0x60,
		0x08,0x55,0x91,0xBF,0x0C,0x1E,0x80,0xB3,0xC3,0x39,0x5A,0x5D,
		0x08,0x3E,0x3C,0xB8,0x76,0xE1,0x92,0x37,0xF1,0xCC,0x0C,0x3F,
		0x46,0xED,0x51,0x2D,0x6F,0x57,0x05,0x47,0x78,0xB5,0xF1,0x6B,
		0x7C,0xEA,0x51,0xA6,0x88,0xD8,0x63,0x18,0x8E,0x42,0x0E,0x50,
		0xF1,0xAC,0xD0,0x75,0x0A,0xB5,0x9B,0xD5,0x07,0x3A,0xF0,0x75,
		0x04,0x27,0xC5,0xBD,0xA6,0xAE,0x18,0xEE,0x30,0x22,0x70,0x56,
		0x09,0xA7,0xC2,0x26,0x61,0x3B,0x56,0x27,0x82,0x97,0xF6,0xFE,
		0x7A,0x3D,0x17,0x3C,0xC2,0x27,0x39,0xD3,0xBB,0x80,0xB6,0x42,
		0x4D,0x20,0xB1,0xC1,0x89,0x00,0x77,0x8C,0x6F,0xDD,0x6F,0x1D,
		0x44,0xAD,0x1B,0x92,0x6F,0xD6,0x56,0x11,0x6E,0x12,0x5C,0x7F,
		0x69,0x33,0x17,0x7A,0x20,0xE8,0x5D,0x81,0xC0,0xDD,0x1E,0xBE,
		0xEF,0x62,0x81,0xF2,0xEA,0xEA,0xDE,0x7B,0xA1,0x8C,0x7D,0x91,
		0x8B,0x62,0xBD,0x13,0x53,0x41,0xB9,0x45,0x65,0x11,0xB0,0x00,
		0x7C,0xA6,0x12,0x19,0xDC,0x77,0x26,0xD6,0x13,0xC8,0xDF,0x47,
		0x7A,0xCE,0xEB,0xD8,0xC3,0xDF,0x7F,0x21,0x27,0x5C,0x4A,0x6B,
		0xE9,0x27,0xC7,0x60,0x56,0x6E,0xA2,0x5F,0xF2,0xAD,0xB0,0xC3,
		0x97,0xF6,0xE9,0xDF,0xFB,0x1F,0xE9,0x17,0x06,0x36,0xC5,0x10,
		0xC0,0x49,0xD5,0x59,0xEA,0x97,0x27,0xE7,0x43,0x64,0xDE,0x31,
		0xD7,0x14,0x9D,0xDC,0x78,0xC5,0x0E,0xEF,0x6A,0x76,0x57,0x33,
		0xAF,0x54,0xB1,0x30,0xD0,0x91,0x24,0x09,0x24,0x40,0xD5,0x00,
		0x9B,0x84,0xF7,0xFC,0xAD,0x7F,0x41,0xBB,0x00,0x84,0x49,0x49,
		0xA1,0x43,0x44,0xA0,0xA3,0xD1,0xBA,0x49,0xD8,0xCE,0x60,0x90,
		0x07,0x20,0xCD,0xC8,0xEB,0xD4,0x02,0x71,0xB8,0x60,0xDF,0xA9,
		0x6B,0xEC,0x25,0x8D,0x71,0x28,0x6A,0x2E,0xF6,0x52,0xF0,0x24,
		0xF3,0xF5,0x1E,0x00,0x7B,0x7C,0xCA,0x6A,0x6B,0xD7,0x4F,0x3E,
		0x5E,0x4B,0x85,0xCF,0xF1,0x67,0x9F,0x89,0x5A,0xF4,0x3A,0x29,
		0x73,0xFF,0xDC,0x68,0x25,0xA5,0x60,0x10,0xFC,0x9A,0x73,0x78,
		0xEA,0x28,0xC1,0x11,0x3B,0x07,0x46,0xEB,0xDE,0xF1,0xF3,0x2E,
		0xC7,0xC1,0x24,0xFB,0xC2,0x6C,0x4A,0x38,0x6C,0x9A,0x7F,0x87,
		0x76,0x30,0xF4,0xCC,0x21,0x49,0xC1,0x66,0x3D,0x95,0xE4,0xAA,
		0xE2,0x75,0x08,0xAB,0xEF,0xA2,0x51,0x30,0xFE,0x86,0xD0,0xE1,
		0x4C,0x05,0x0C,0xDE,0x63,0x93,0xB3,0x37,0x11,0x81,0xB5,0x8F,
		0x84,0xE2,0x48,0xC1,0xF6,0xF6,0xD6,0x50,0x91,0xDE,0x61,0x14,
		0x7B,0x6E,0x88,0x95,0x30,0x52,0xEF,0xA5,0x03,0x99,0xBE,0x50,
		0x97,0xE3,0x25,0x8F,0x50,0x01,0x9C,0x54,0x99,0x2E,0x4C,0x6A,
		0x61,0xD7,0x0D,0xB9,0xFE,0xE9,0xFC,0x37,0xC1,0x6A,0xDF,0x84,
		0xF4,0x5A,0x7E,0xBA,0x95,0x23,0x5C,0x41,0x35,0xDB,0xF9,0x1E,
		0x93,0xC6,0x29,0x8E,0x57,0x28,0x3D,0x3A,0xDE,0x31,0x86,0x69,
		0x3D,0xC3,0x8F,0x27,0x62,0x84,0x77,0x58,0x02,0x7F,0x90,0x76,
		0x2D,0xDF,0x45,0x70,0x3F,0x04,0x44,0x5C,0xD1,0x8C,0x73,0x5E,
		0xB5,0xC8,0x9A,0x72,0x3E,0xA9,0x4D,0xFC,0xDC,0xAC,0x7B,0xFF,
		0x54,0xC2,0x7B,0x3B,0x11,0x6B,0x14,0xA3,0x50,0xDB,0x14,0xB0,
		0x89,0x5A,0xE7,0xDD,0xBF,0x1E,0x27,0xBC,0xC6,0x30,0xC4,0xD6,
		0x74,0x13,0x26,0xBA,0x67,0x15,0x56,0x42,0xED,0xDA,0xFF,0x9F,
		0x4B,0xBE,0x3E,0xBC,0xD0,0xA8,0xCA,0xB1,0x8E,0xB7,0xD0,0xFF,
		0xE0,0x87,0x67,0xE4,0x51,0xA4,0xB9,0xF3,0x47,0xFA,0x13,0xFA,
		0xB1,0xDA,0xB6,0xF8,0xEC,0x6D,0x0B,0x2E,0x99,0x37,0xB8,0x66,
		0x80,0x83,0x3A,0xCA,0x46,0x6D,0xDC,0x24,0x9F,0x83,0x54,0xA9,
		0x70,0x62,0x21,0x6D,0x28,0x0E,0x63,0x8B,0x91,0x7F,0xFF,0xCD,
		0x80,0xF5,0xAC,0xE6,0x90,0x97,0x3C,0xB5,0xE8,0x00,0x90,0x96,
		0xB7,0x26,0x2C,0xB2,0x9C,0xEF,0xBF,0xCC,0xD6,0xA8,0x01,0xA0,
		0xFC,0x20,0x61,0xBD,0xA9,0xEE,0x5F,0x8B,0x32,0x1C,0x62,0xF0,
		0x94,0x81,0x86,0x30,0x1B,0xB1,0x12,0xF5,0x58,0x52,0x8D,0xE4,
		0x99,0x43,0x60,0x9B,0x24,0xF8,0x8B,0x14,0x63,0x0C,0x93,0xF4,
		0x7A,0x70,0x0A,0xE1,0x45,0x16,0x92,0x9D,0x12,0x50,0x05,0x3C,
		0x05,0xEE,0x40,0x32,0x4D,0x99,0xFF,0xF6,0x14,0x25,0xF6,0xDF,
		0xD8,0xDA,0xE0,0x85,0x1B,0x3F,0x2C,0x50,0xD9,0x01,0x4B,0x01,
		0x65,0x2C,0x75,0x32,0xBA,0x6F,0x00,0x56,0xD3,0x83,0xC8,0x44,
		0x9B,0x62,0x3F,0x88,0xA7,0x18,0xAC,0x69,0xBB,0xF3,0x14,0xD3,
		0xA4,0x09,0x6C,0x4A,0x14,0x0C,0x55,0x95,0x7A,0x33,0x21,0x99,
		0x0F,0x01,0x00,0x5D,0x2D,0xAB,0xEB,0x7A,0x76,0x03,0xE7,0x2A,
		0x1D,0xC2,0x86,0x4B
_EOF_
			;;
		*)
			return 1
			;;
	esac

	cat << \_EOF_
	};
	static unsigned char dhg[] = {
		0x02,
	};

	DH *dh = DH_new();;
	BIGNUM *dhp_bn, *dhg_bn;

	if (dh == NULL) {
		return NULL;
	}

	dhp_bn = BN_bin2bn(dhp, sizeof (dhp), NULL);
	dhg_bn = BN_bin2bn(dhg, sizeof (dhg), NULL);

#ifdef TCLTLS_OPENSSL_PRE_1_1_API
	dh->p = dhp_bn;
	dh->g = dhg_bn;

	if (dhp_bn == NULL || dhg_bn == NULL) {
#else
	if (dhp_bn == NULL || dhg_bn == NULL || !DH_set0_pqg(dh, dhp_bn, NULL, dhg_bn)) {
#endif
		DH_free(dh);
		BN_free(dhp_bn);
		BN_free(dhg_bn);
		return(NULL);
	}

	return(dh);
}
_EOF_

	return 0
}

# Enable support for giving the same DH params each time
if [ "${option_fallback}" = '1' ]; then
	gen_dh_params_fallback && exit 0

	echo "Unable to generate fallback parameters for DH of ${bits} bits" >&2

	exit 1
fi

echo "*****************************" >&2
echo "** Generating DH Primes.   **" >&2
echo "** This will take a while. **" >&2
echo "*****************************" >&2
echo "Use OpenSSL" >&2
gen_dh_params_openssl && exit 0
echo "Use Remote" >&2
gen_dh_params_remote && exit 0
echo "Use fallback" >&2
gen_dh_params_fallback && exit 0

echo "Unable to generate parameters for DH of ${bits} bits" >&2

exit 1

Added generic/tclOpts.h version [26b0fd21c2].




























































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/*
 *  Copyright (C) 1997-2000 Matt Newman <[email protected]>
 *
 * Stylized option processing - requires consistent
 * external vars: opt, idx, objc, objv
 */

#ifndef _TCL_OPTS_H
#define _TCL_OPTS_H

#define OPT_PROLOG(option)			\
    if (strcmp(opt, (option)) == 0) {		\
	if (++idx >= objc) {			\
	    Tcl_AppendResult(interp,		\
		"no argument given for ",	\
		(option), " option",		\
		(char *) NULL);			\
	    return TCL_ERROR;			\
	}
#define OPT_POSTLOG()				\
	continue;				\
    }
#define OPTOBJ(option, var)			\
    OPT_PROLOG(option)				\
    var = objv[idx];				\
    OPT_POSTLOG()

#define OPTSTR(option, var)			\
    OPT_PROLOG(option)				\
    var = Tcl_GetStringFromObj(objv[idx], NULL);\
    OPT_POSTLOG()

#define OPTINT(option, var)			\
    OPT_PROLOG(option)				\
    if (Tcl_GetIntFromObj(interp, objv[idx],	\
	    &(var)) != TCL_OK) {		\
	    return TCL_ERROR;			\
    }						\
    OPT_POSTLOG()

#define OPTBOOL(option, var)			\
    OPT_PROLOG(option)				\
    if (Tcl_GetBooleanFromObj(interp, objv[idx],\
	    &(var)) != TCL_OK) {		\
	    return TCL_ERROR;			\
    }						\
    OPT_POSTLOG()

#define OPTBYTE(option, var, lvar)			\
    OPT_PROLOG(option)				\
    var = Tcl_GetByteArrayFromObj(objv[idx], &(lvar));\
    OPT_POSTLOG()

#define OPTBAD(type, list)			\
    Tcl_AppendResult(interp, "bad ", (type),	\
		" \"", opt, "\": must be ",	\
		(list), (char *) NULL)

#endif /* _TCL_OPTS_H */

Added generic/tls.c version [e3d417c077].
















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
 * Copyright (C) 1997-1999 Matt Newman <[email protected]>
 * some modifications:
 *	Copyright (C) 2000 Ajuba Solutions
 *	Copyright (C) 2002 ActiveState Corporation
 *	Copyright (C) 2004 Starfish Systems
 *
 * TLS (aka SSL) Channel - can be layered on any bi-directional
 * Tcl_Channel (Note: Requires Trf Core Patch)
 *
 * This was built (almost) from scratch based upon observation of
 * OpenSSL 0.9.2B
 *
 * Addition credit is due for Andreas Kupries ([email protected]), for
 * providing the Tcl_ReplaceChannel mechanism and working closely with me
 * to enhance it to support full fileevent semantics.
 *
 * Also work done by the follow people provided the impetus to do this "right":
 *	tclSSL (Colin McCormack, Shared Technology)
 *	SSLtcl (Peter Antman)
 *
 */

#include "tlsInt.h"
#include "tclOpts.h"
#include <stdio.h>
#include <stdlib.h>
#include <openssl/rsa.h>

/*
 * External functions
 */

/*
 * Forward declarations
 */

#define F2N(key, dsp) \
	(((key) == NULL) ? (char *) NULL : \
		Tcl_TranslateFileName(interp, (key), (dsp)))
#define REASON()	ERR_reason_error_string(ERR_get_error())

static SSL_CTX *CTX_Init(State *statePtr, int isServer, int proto, char *key,
		char *certfile, unsigned char *key_asn1, unsigned char *cert_asn1,
		int key_asn1_len, int cert_asn1_len, char *CAdir, char *CAfile,
		char *ciphers, char *DHparams);

static int	TlsLibInit(int uninitialize);

#define TLS_PROTO_SSL2		0x01
#define TLS_PROTO_SSL3		0x02
#define TLS_PROTO_TLS1		0x04
#define TLS_PROTO_TLS1_1	0x08
#define TLS_PROTO_TLS1_2	0x10
#define TLS_PROTO_TLS1_3	0x20
#define ENABLED(flag, mask)	(((flag) & (mask)) == (mask))

#define SSLKEYLOGFILE		"SSLKEYLOGFILE"

/*
 * Static data structures
 */

#ifndef OPENSSL_NO_DH
#include "dh_params.h"
#endif

/*
 * We lose the tcl password callback when we use the RSA BSAFE SSL-C 1.1.2
 * libraries instead of the current OpenSSL libraries.
 */

#ifdef BSAFE
#define PRE_OPENSSL_0_9_4 1
#endif

/*
 * Pre OpenSSL 0.9.4 Compat
 */

#ifndef STACK_OF
#define STACK_OF(x)			STACK
#define sk_SSL_CIPHER_num(sk)		sk_num((sk))
#define sk_SSL_CIPHER_value(sk, index)	(SSL_CIPHER*)sk_value((sk), (index))
#endif

/*
 * Thread-Safe TLS Code
 */

#ifdef TCL_THREADS
#define OPENSSL_THREAD_DEFINES
#include <openssl/opensslconf.h>

#ifdef OPENSSL_THREADS
#include <openssl/crypto.h>
/* Added */
#include <openssl/ssl.h>

/*
 * Threaded operation requires locking callbacks
 * Based from /crypto/cryptlib.c of OpenSSL and NSOpenSSL.
 */

static Tcl_Mutex *locks = NULL;
static int locksCount = 0;
static Tcl_Mutex init_mx;

# if OPENSSL_VERSION_NUMBER < 0x10100000L

void CryptoThreadLockCallback(int mode, int n, const char *file, int line) {

    if (mode & CRYPTO_LOCK) {
	/* This debugging is turned off by default -- it's too noisy. */
	/* dprintf("Called to lock (n=%i of %i)", n, locksCount); */
	Tcl_MutexLock(&locks[n]);
    } else {
	/* dprintf("Called to unlock (n=%i of %i)", n, locksCount); */
	Tcl_MutexUnlock(&locks[n]);
    }

    /* dprintf("Returning"); */

    return;
    file = file;
    line = line;
}

unsigned long CryptoThreadIdCallback(void) {
    unsigned long ret;

    dprintf("Called");

    ret = (unsigned long) Tcl_GetCurrentThread();

    dprintf("Returning %lu", ret);

    return(ret);
}

#endif
#endif /* OPENSSL_THREADS */
#endif /* TCL_THREADS */


/*
 *-------------------------------------------------------------------
 *
 * InfoCallback --
 *
 *	monitors SSL connection process
 *
 * Results:
 *	None
 *
 * Side effects:
 *	Calls callback (if defined)
 *-------------------------------------------------------------------
 */
static void
InfoCallback(const SSL *ssl, int where, int ret) {
    State *statePtr = (State*)SSL_get_app_data((SSL *)ssl);
    Tcl_Obj *cmdPtr;
    char *major; char *minor;

    dprintf("Called");

    if (statePtr->callback == (Tcl_Obj*)NULL)
	return;

    cmdPtr = Tcl_DuplicateObj(statePtr->callback);

#if 0
    if (where & SSL_CB_ALERT) {
	sev = SSL_alert_type_string_long(ret);
	if (strcmp(sev, "fatal")==0) {	/* Map to error */
	    Tls_Error(statePtr, SSL_ERROR(ssl, 0));
	    return;
	}
    }
#endif
    if (where & SSL_CB_HANDSHAKE_START) {
	major = "handshake";
	minor = "start";
    } else if (where & SSL_CB_HANDSHAKE_DONE) {
	major = "handshake";
	minor = "done";
    } else {
	if (where & SSL_CB_ALERT)		major = "alert";
	else if (where & SSL_ST_CONNECT)	major = "connect";
	else if (where & SSL_ST_ACCEPT)		major = "accept";
	else					major = "unknown";

	if (where & SSL_CB_READ)		minor = "read";
	else if (where & SSL_CB_WRITE)		minor = "write";
	else if (where & SSL_CB_LOOP)		minor = "loop";
	else if (where & SSL_CB_EXIT)		minor = "exit";
	else					minor = "unknown";
    }

    Tcl_ListObjAppendElement(statePtr->interp, cmdPtr, Tcl_NewStringObj("info", -1));
    Tcl_ListObjAppendElement(statePtr->interp, cmdPtr,
	    Tcl_NewStringObj(Tcl_GetChannelName(statePtr->self), -1));
    Tcl_ListObjAppendElement(statePtr->interp, cmdPtr, Tcl_NewStringObj(major, -1));
    Tcl_ListObjAppendElement(statePtr->interp, cmdPtr, Tcl_NewStringObj(minor, -1));

    if (where & (SSL_CB_LOOP|SSL_CB_EXIT)) {
	Tcl_ListObjAppendElement(statePtr->interp, cmdPtr,
	    Tcl_NewStringObj(SSL_state_string_long(ssl), -1));
    } else if (where & SSL_CB_ALERT) {
	const char *cp = (char *) SSL_alert_desc_string_long(ret);

	Tcl_ListObjAppendElement(statePtr->interp, cmdPtr, Tcl_NewStringObj(cp, -1));
    } else {
	Tcl_ListObjAppendElement(statePtr->interp, cmdPtr,
	    Tcl_NewStringObj(SSL_state_string_long(ssl), -1));
    }
    Tcl_Preserve((ClientData) statePtr->interp);
    Tcl_Preserve((ClientData) statePtr);

    Tcl_IncrRefCount(cmdPtr);
    (void) Tcl_EvalObjEx(statePtr->interp, cmdPtr, TCL_EVAL_GLOBAL);
    Tcl_DecrRefCount(cmdPtr);

    Tcl_Release((ClientData) statePtr);
    Tcl_Release((ClientData) statePtr->interp);
}

/*
 *-------------------------------------------------------------------
 *
 * VerifyCallback --
 *
 *	Monitors SSL certificate validation process.
 *	This is called whenever a certificate is inspected
 *	or decided invalid.
 *
 * Results:
 *	A callback bound to the socket may return one of:
 *	    0			- the certificate is deemed invalid
 *	    1			- the certificate is deemed valid
 *	    empty string	- no change to certificate validation
 *
 * Side effects:
 *	The err field of the currently operative State is set
 *	  to a string describing the SSL negotiation failure reason
 *-------------------------------------------------------------------
 */
static int
VerifyCallback(int ok, X509_STORE_CTX *ctx) {
    Tcl_Obj *cmdPtr, *result;
    char *errStr, *string;
    int length;
    SSL   *ssl		= (SSL*)X509_STORE_CTX_get_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx());
    X509  *cert		= X509_STORE_CTX_get_current_cert(ctx);
    State *statePtr	= (State*)SSL_get_app_data(ssl);
    int depth		= X509_STORE_CTX_get_error_depth(ctx);
    int err		= X509_STORE_CTX_get_error(ctx);
    int code;

    dprintf("Verify: %d", ok);

    if (!ok) {
	errStr = (char*)X509_verify_cert_error_string(err);
    } else {
	errStr = (char *)0;
    }

    if (statePtr->callback == (Tcl_Obj*)NULL) {
	if (statePtr->vflags & SSL_VERIFY_FAIL_IF_NO_PEER_CERT) {
	    return ok;
	} else {
	    return 1;
	}
    }
    cmdPtr = Tcl_DuplicateObj(statePtr->callback);

    Tcl_ListObjAppendElement(statePtr->interp, cmdPtr, Tcl_NewStringObj("verify", -1));
    Tcl_ListObjAppendElement(statePtr->interp, cmdPtr,
	    Tcl_NewStringObj(Tcl_GetChannelName(statePtr->self), -1));
    Tcl_ListObjAppendElement(statePtr->interp, cmdPtr, Tcl_NewIntObj(depth));
    Tcl_ListObjAppendElement(statePtr->interp, cmdPtr, Tls_NewX509Obj(statePtr->interp, cert));
    Tcl_ListObjAppendElement(statePtr->interp, cmdPtr, Tcl_NewIntObj(ok));
    Tcl_ListObjAppendElement(statePtr->interp, cmdPtr, Tcl_NewStringObj(errStr ? errStr : "", -1));

    Tcl_Preserve((ClientData) statePtr->interp);
    Tcl_Preserve((ClientData) statePtr);

    statePtr->flags |= TLS_TCL_CALLBACK;

    Tcl_IncrRefCount(cmdPtr);
    code = Tcl_EvalObjEx(statePtr->interp, cmdPtr, TCL_EVAL_GLOBAL);
    if (code != TCL_OK) {
	/* It got an error - reject the certificate.		*/
#if (TCL_MAJOR_VERSION == 8) && (TCL_MINOR_VERSION < 6)
	Tcl_BackgroundError(statePtr->interp);
#else
	Tcl_BackgroundException(statePtr->interp, code);
#endif
	ok = 0;
    } else {
	result = Tcl_GetObjResult(statePtr->interp);
	string = Tcl_GetStringFromObj(result, &length);
	/* An empty result leaves verification unchanged.	*/
	if (string != NULL && length > 0) {
	    code = Tcl_GetIntFromObj(statePtr->interp, result, &ok);
	    if (code != TCL_OK) {
#if (TCL_MAJOR_VERSION == 8) && (TCL_MINOR_VERSION < 6)
		Tcl_BackgroundError(statePtr->interp);
#else
		Tcl_BackgroundException(statePtr->interp, code);
#endif
		ok = 0;
	    }
	}
    }
    Tcl_DecrRefCount(cmdPtr);

    statePtr->flags &= ~(TLS_TCL_CALLBACK);

    Tcl_Release((ClientData) statePtr);
    Tcl_Release((ClientData) statePtr->interp);
    return(ok);	/* By default, leave verification unchanged.	*/
}

/*
 *-------------------------------------------------------------------
 *
 * Tls_Error --
 *
 *	Calls callback with $fd and $msg - so the callback can decide
 *	what to do with errors.
 *
 * Side effects:
 *	The err field of the currently operative State is set
 *	  to a string describing the SSL negotiation failure reason
 *-------------------------------------------------------------------
 */
void
Tls_Error(State *statePtr, char *msg) {
    Tcl_Obj *cmdPtr;
    int code;

    dprintf("Called");

    if (msg && *msg) {
	Tcl_SetErrorCode(statePtr->interp, "SSL", msg, (char *)NULL);
    } else {
	msg = Tcl_GetStringFromObj(Tcl_GetObjResult(statePtr->interp), NULL);
    }
    statePtr->err = msg;

    if (statePtr->callback == (Tcl_Obj*)NULL) {
	char buf[BUFSIZ];
	sprintf(buf, "SSL channel \"%s\": error: %s",
	    Tcl_GetChannelName(statePtr->self), msg);
	Tcl_SetResult(statePtr->interp, buf, TCL_VOLATILE);
#if (TCL_MAJOR_VERSION == 8) && (TCL_MINOR_VERSION < 6)
	Tcl_BackgroundError(statePtr->interp);
#else
	Tcl_BackgroundException(statePtr->interp, TCL_ERROR);
#endif
	return;
    }
    cmdPtr = Tcl_DuplicateObj(statePtr->callback);

    Tcl_ListObjAppendElement(statePtr->interp, cmdPtr,
	    Tcl_NewStringObj("error", -1));

    Tcl_ListObjAppendElement(statePtr->interp, cmdPtr,
	    Tcl_NewStringObj(Tcl_GetChannelName(statePtr->self), -1));

    Tcl_ListObjAppendElement(statePtr->interp, cmdPtr,
	    Tcl_NewStringObj(msg, -1));

    Tcl_Preserve((ClientData) statePtr->interp);
    Tcl_Preserve((ClientData) statePtr);

    Tcl_IncrRefCount(cmdPtr);
    code = Tcl_EvalObjEx(statePtr->interp, cmdPtr, TCL_EVAL_GLOBAL);
    if (code != TCL_OK) {
#if (TCL_MAJOR_VERSION == 8) && (TCL_MINOR_VERSION < 6)
	Tcl_BackgroundError(statePtr->interp);
#else
	Tcl_BackgroundException(statePtr->interp, code);
#endif
    }
    Tcl_DecrRefCount(cmdPtr);
    Tcl_Release((ClientData) statePtr);
    Tcl_Release((ClientData) statePtr->interp);
}

void KeyLogCallback(const SSL *ssl, const char *line) {
    char *str = getenv(SSLKEYLOGFILE);
    FILE *fd;
    if (str) {
	fd = fopen(str, "a");
	fprintf(fd, "%s\n",line);
	fclose(fd);
    }
}

/*
 *-------------------------------------------------------------------
 *
 * PasswordCallback --
 *
 *	Called when a password is needed to unpack RSA and PEM keys.
 *	Evals any bound password script and returns the result as
 *	the password string.
 *-------------------------------------------------------------------
 */
#ifdef PRE_OPENSSL_0_9_4
/*
 * No way to handle user-data therefore no way without a global
 * variable to access the Tcl interpreter.
*/
static int
PasswordCallback(char *buf, int size, int verify) {
    return -1;
	buf = buf;
	size = size;
	verify = verify;
}
#else
static int
PasswordCallback(char *buf, int size, int verify, void *udata) {
    State *statePtr	= (State *) udata;
    Tcl_Interp *interp	= statePtr->interp;
    Tcl_Obj *cmdPtr;
    int code;

    dprintf("Called");

    if (statePtr->password == NULL) {
	if (Tcl_EvalEx(interp, "tls::password", -1, TCL_EVAL_GLOBAL) == TCL_OK) {
	    char *ret = (char *) Tcl_GetStringResult(interp);
	    strncpy(buf, ret, (size_t) size);
	    return (int)strlen(ret);
	} else {
	    return -1;
	}
    }

    cmdPtr = Tcl_DuplicateObj(statePtr->password);

    Tcl_Preserve((ClientData) interp);
    Tcl_Preserve((ClientData) statePtr);

    Tcl_IncrRefCount(cmdPtr);
    code = Tcl_EvalObjEx(interp, cmdPtr, TCL_EVAL_GLOBAL);
    if (code != TCL_OK) {
#if (TCL_MAJOR_VERSION == 8) && (TCL_MINOR_VERSION < 6)
	Tcl_BackgroundError(interp);
#else
	Tcl_BackgroundException(interp, code);
#endif
    }
    Tcl_DecrRefCount(cmdPtr);

    Tcl_Release((ClientData) statePtr);

    if (code == TCL_OK) {
	char *ret = (char *) Tcl_GetStringResult(interp);
	if (strlen(ret) < size - 1) {
	    strncpy(buf, ret, (size_t) size);
	    Tcl_Release((ClientData) interp);
	    return (int)strlen(ret);
	}
    }
    Tcl_Release((ClientData) interp);
    return -1;
	verify = verify;
}
#endif

/*
 *-------------------------------------------------------------------
 *
 * CiphersObjCmd -- list available ciphers
 *
 *	This procedure is invoked to process the "tls::ciphers" command
 *	to list available ciphers, based upon protocol selected.
 *
 * Results:
 *	A standard Tcl result list.
 *
 * Side effects:
 *	constructs and destroys SSL context (CTX)
 *
 *-------------------------------------------------------------------
 */
static int
CiphersObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    static const char *protocols[] = {
	"ssl2",	"ssl3",	"tls1",	"tls1.1", "tls1.2", "tls1.3", NULL
    };
    enum protocol {
	TLS_SSL2, TLS_SSL3, TLS_TLS1, TLS_TLS1_1, TLS_TLS1_2, TLS_TLS1_3, TLS_NONE
    };
    Tcl_Obj *objPtr;
    SSL_CTX *ctx = NULL;
    SSL *ssl = NULL;
    STACK_OF(SSL_CIPHER) *sk;
    char *cp, buf[BUFSIZ];
    int index, verbose = 0;

    dprintf("Called");

    if ((objc < 2) || (objc > 3)) {
	Tcl_WrongNumArgs(interp, 1, objv, "protocol ?verbose?");
	return TCL_ERROR;
    }
    if (Tcl_GetIndexFromObj(interp, objv[1], protocols, "protocol", 0, &index) != TCL_OK) {
	return TCL_ERROR;
    }
    if ((objc > 2) && Tcl_GetBooleanFromObj(interp, objv[2], &verbose) != TCL_OK) {
	return TCL_ERROR;
    }
    switch ((enum protocol)index) {
	case TLS_SSL2:
#if OPENSSL_VERSION_NUMBER >= 0x10101000L || defined(NO_SSL2) || defined(OPENSSL_NO_SSL2)
	    Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
	    return TCL_ERROR;
#else
	    ctx = SSL_CTX_new(SSLv2_method()); break;
#endif
	case TLS_SSL3:
#if defined(NO_SSL3) || defined(OPENSSL_NO_SSL3)
	    Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
	    return TCL_ERROR;
#else
	    ctx = SSL_CTX_new(SSLv3_method()); break;
#endif
	case TLS_TLS1:
#if defined(NO_TLS1) || defined(OPENSSL_NO_TLS1)
	    Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
	    return TCL_ERROR;
#else
	    ctx = SSL_CTX_new(TLSv1_method()); break;
#endif
	case TLS_TLS1_1:
#if defined(NO_TLS1_1) || defined(OPENSSL_NO_TLS1_1)
	    Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
	    return TCL_ERROR;
#else
	    ctx = SSL_CTX_new(TLSv1_1_method()); break;
#endif
	case TLS_TLS1_2:
#if defined(NO_TLS1_2) || defined(OPENSSL_NO_TLS1_2)
	    Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
	    return TCL_ERROR;
#else
	    ctx = SSL_CTX_new(TLSv1_2_method()); break;
#endif
	case TLS_TLS1_3:
#if defined(NO_TLS1_3) || defined(OPENSSL_NO_TLS1_3)
	    Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
	    return TCL_ERROR;
#else
	    ctx = SSL_CTX_new(TLS_method());
            SSL_CTX_set_min_proto_version(ctx, TLS1_3_VERSION);
	    SSL_CTX_set_max_proto_version(ctx, TLS1_3_VERSION);
	    break;
#endif
	default:
	    break;
    }
    if (ctx == NULL) {
	Tcl_AppendResult(interp, REASON(), NULL);
	return TCL_ERROR;
    }
    ssl = SSL_new(ctx);
    if (ssl == NULL) {
	Tcl_AppendResult(interp, REASON(), NULL);
	SSL_CTX_free(ctx);
	return TCL_ERROR;
    }
    objPtr = Tcl_NewListObj(0, NULL);

    if (!verbose) {
	for (index = 0; ; index++) {
	    cp = (char*)SSL_get_cipher_list(ssl, index);
	    if (cp == NULL) break;
	    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(cp, -1));
	}
    } else {
	sk = SSL_get_ciphers(ssl);

	for (index = 0; index < sk_SSL_CIPHER_num(sk); index++) {
	    register size_t i;
	    SSL_CIPHER_description(sk_SSL_CIPHER_value(sk, index), buf, sizeof(buf));
	    for (i = strlen(buf) - 1; i ; i--) {
		if ((buf[i] == ' ') || (buf[i] == '\n') || (buf[i] == '\r') || (buf[i] == '\t')) {
		    buf[i] = '\0';
		} else {
		    break;
		}
	    }
	    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(buf, -1));
	}
    }
    SSL_free(ssl);
    SSL_CTX_free(ctx);

    Tcl_SetObjResult(interp, objPtr);
    return TCL_OK;
	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * HandshakeObjCmd --
 *
 *	This command is used to verify whether the handshake is complete
 *	or not.
 *
 * Results:
 *	A standard Tcl result. 1 means handshake complete, 0 means pending.
 *
 * Side effects:
 *	May force SSL negotiation to take place.
 *
 *-------------------------------------------------------------------
 */
static int HandshakeObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    Tcl_Channel chan;        /* The channel to set a mode on. */
    State *statePtr;        /* client state for ssl socket */
    const char *errStr = NULL;
    int ret = 1;
    int err = 0;

    dprintf("Called");

    if (objc != 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "channel");
	return(TCL_ERROR);
    }

    chan = Tcl_GetChannel(interp, Tcl_GetStringFromObj(objv[1], NULL), NULL);
    if (chan == (Tcl_Channel) NULL) {
	return(TCL_ERROR);
    }

    /*
     * Make sure to operate on the topmost channel
     */
    chan = Tcl_GetTopChannel(chan);
    if (Tcl_GetChannelType(chan) != Tls_ChannelType()) {
	Tcl_AppendResult(interp, "bad channel \"", Tcl_GetChannelName(chan), "\": not a TLS channel", NULL);
	return(TCL_ERROR);
    }
    statePtr = (State *)Tcl_GetChannelInstanceData(chan);

    dprintf("Calling Tls_WaitForConnect");
    ret = Tls_WaitForConnect(statePtr, &err, 1);
    dprintf("Tls_WaitForConnect returned: %i", ret);

    if (ret < 0 && ((statePtr->flags & TLS_TCL_ASYNC) && (err == EAGAIN))) {
	dprintf("Async set and err = EAGAIN");
	ret = 0;
    } else if (ret < 0) {
	errStr = statePtr->err;
	Tcl_ResetResult(interp);
	Tcl_SetErrno(err);

	if (!errStr || (*errStr == 0)) {
	    errStr = Tcl_PosixError(interp);
	}

	Tcl_AppendResult(interp, "handshake failed: ", errStr, (char *) NULL);
	dprintf("Returning TCL_ERROR with handshake failed: %s", errStr);
	return(TCL_ERROR);
    } else {
	if (err != 0) {
	    dprintf("Got an error with a completed handshake: err = %i", err);
	}
	ret = 1;
    }

    dprintf("Returning TCL_OK with data \"%i\"", ret);
    Tcl_SetObjResult(interp, Tcl_NewIntObj(ret));
    return(TCL_OK);
	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * ImportObjCmd --
 *
 *	This procedure is invoked to process the "ssl" command
 *
 *	The ssl command pushes SSL over a (newly connected) tcp socket
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	May modify the behavior of an IO channel.
 *
 *-------------------------------------------------------------------
 */
static int
ImportObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    Tcl_Channel chan;		/* The channel to set a mode on. */
    State *statePtr;		/* client state for ssl socket */
    SSL_CTX *ctx	        = NULL;
    Tcl_Obj *script	        = NULL;
    Tcl_Obj *password	        = NULL;
    Tcl_DString upperChannelTranslation, upperChannelBlocking, upperChannelEncoding, upperChannelEOFChar;
    int idx, len;
    int flags		        = TLS_TCL_INIT;
    int server		        = 0;	/* is connection incoming or outgoing? */
    char *keyfile	        = NULL;
    char *certfile	        = NULL;
    unsigned char *key  	= NULL;
    int key_len                 = 0;
    unsigned char *cert         = NULL;
    int cert_len                = 0;
    char *ciphers	        = NULL;
    char *CAfile	        = NULL;
    char *CAdir		        = NULL;
    char *DHparams	        = NULL;
    char *model		        = NULL;
#ifndef OPENSSL_NO_TLSEXT
    char *servername	        = NULL;	/* hostname for Server Name Indication */
    Tcl_Obj *alpn		= NULL;
#endif
    int ssl2 = 0, ssl3 = 0;
    int tls1 = 1, tls1_1 = 1, tls1_2 = 1, tls1_3 = 1;
    int proto = 0;
    int verify = 0, require = 0, request = 1;

    dprintf("Called");

#if OPENSSL_VERSION_NUMBER < 0x10100000L && !defined(OPENSSL_NO_SSL2) && defined(NO_TLS1) && defined(NO_TLS1_1) && defined(NO_TLS1_2) && defined(NO_TLS1_3) && defined(NO_SSL3) && !defined(NO_SSL2)
    ssl2 = 1;
#endif
#if !defined(OPENSSL_NO_SSL3) && defined(NO_TLS1) && defined(NO_TLS1_1) && defined(NO_TLS1_2) && defined(NO_TLS1_3) && defined(NO_SSL2) && !defined(NO_SSL3)
    ssl3 = 1;
#endif
#if defined(NO_TLS1) || defined(OPENSSL_NO_TLS1)
    tls1 = 0;
#endif
#if defined(NO_TLS1_1) || defined(OPENSSL_NO_TLS1_1)
    tls1_1 = 0;
#endif
#if defined(NO_TLS1_2) || defined(OPENSSL_NO_TLS1_2)
    tls1_2 = 0;
#endif
#if defined(NO_TLS1_3) || defined(OPENSSL_NO_TLS1_3)
    tls1_3 = 0;
#endif

    if (objc < 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "channel ?options?");
	return TCL_ERROR;
    }

    chan = Tcl_GetChannel(interp, Tcl_GetStringFromObj(objv[1], NULL), NULL);
    if (chan == (Tcl_Channel) NULL) {
	return TCL_ERROR;
    }

    /*
     * Make sure to operate on the topmost channel
     */
    chan = Tcl_GetTopChannel(chan);

    for (idx = 2; idx < objc; idx++) {
	char *opt = Tcl_GetStringFromObj(objv[idx], NULL);

	if (opt[0] != '-')
	    break;

	OPTSTR("-cadir", CAdir);
	OPTSTR("-cafile", CAfile);
	OPTSTR("-certfile", certfile);
	OPTSTR("-cipher", ciphers);
	OPTOBJ("-command", script);
	OPTSTR("-dhparams", DHparams);
	OPTSTR("-keyfile", keyfile);
	OPTSTR("-model", model);
	OPTOBJ("-password", password);
	OPTBOOL("-require", require);
	OPTBOOL("-request", request);
	OPTBOOL("-server", server);
#ifndef OPENSSL_NO_TLSEXT
	OPTSTR("-servername", servername);
	OPTOBJ("-alpn", alpn);
#endif

	OPTBOOL("-ssl2", ssl2);
	OPTBOOL("-ssl3", ssl3);
	OPTBOOL("-tls1", tls1);
	OPTBOOL("-tls1.1", tls1_1);
	OPTBOOL("-tls1.2", tls1_2);
	OPTBOOL("-tls1.3", tls1_3);
	OPTBYTE("-cert", cert, cert_len);
	OPTBYTE("-key", key, key_len);

	OPTBAD("option", "-alpn, -cadir, -cafile, -cert, -certfile, -cipher, -command, -dhparams, -key, -keyfile, -model, -password, -require, -request, -server, -servername, -ssl2, -ssl3, -tls1, -tls1.1, -tls1.2, or -tls1.3");

	return TCL_ERROR;
    }
    if (request)	    verify |= SSL_VERIFY_CLIENT_ONCE | SSL_VERIFY_PEER;
    if (request && require) verify |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
    if (verify == 0)	verify = SSL_VERIFY_NONE;

    proto |= (ssl2 ? TLS_PROTO_SSL2 : 0);
    proto |= (ssl3 ? TLS_PROTO_SSL3 : 0);
    proto |= (tls1 ? TLS_PROTO_TLS1 : 0);
    proto |= (tls1_1 ? TLS_PROTO_TLS1_1 : 0);
    proto |= (tls1_2 ? TLS_PROTO_TLS1_2 : 0);
    proto |= (tls1_3 ? TLS_PROTO_TLS1_3 : 0);

    /* reset to NULL if blank string provided */
    if (cert && !*cert)		        cert	        = NULL;
    if (key && !*key)		        key	        = NULL;
    if (certfile && !*certfile)         certfile	= NULL;
    if (keyfile && !*keyfile)		keyfile	        = NULL;
    if (ciphers && !*ciphers)	        ciphers	        = NULL;
    if (CAfile && !*CAfile)	        CAfile	        = NULL;
    if (CAdir && !*CAdir)	        CAdir	        = NULL;
    if (DHparams && !*DHparams)	        DHparams        = NULL;

    /* new SSL state */
    statePtr		= (State *) ckalloc((unsigned) sizeof(State));
    memset(statePtr, 0, sizeof(State));

    statePtr->flags	= flags;
    statePtr->interp	= interp;
    statePtr->vflags	= verify;
    statePtr->err	= "";

    /* allocate script */
    if (script) {
	(void) Tcl_GetStringFromObj(script, &len);
	if (len) {
	    statePtr->callback = script;
	    Tcl_IncrRefCount(statePtr->callback);
	}
    }

    /* allocate password */
    if (password) {
	(void) Tcl_GetStringFromObj(password, &len);
	if (len) {
	    statePtr->password = password;
	    Tcl_IncrRefCount(statePtr->password);
	}
    }

    if (model != NULL) {
	int mode;
	/* Get the "model" context */
	chan = Tcl_GetChannel(interp, model, &mode);
	if (chan == (Tcl_Channel) NULL) {
	    Tls_Free((char *) statePtr);
	    return TCL_ERROR;
	}

	/*
	 * Make sure to operate on the topmost channel
	 */
	chan = Tcl_GetTopChannel(chan);
	if (Tcl_GetChannelType(chan) != Tls_ChannelType()) {
	    Tcl_AppendResult(interp, "bad channel \"", Tcl_GetChannelName(chan),
		"\": not a TLS channel", NULL);
	    Tls_Free((char *) statePtr);
	    return TCL_ERROR;
	}
	ctx = ((State *)Tcl_GetChannelInstanceData(chan))->ctx;
    } else {
	if ((ctx = CTX_Init(statePtr, server, proto, keyfile, certfile, key, cert,
	    key_len, cert_len, CAdir, CAfile, ciphers, DHparams)) == (SSL_CTX*)0) {
	    Tls_Free((char *) statePtr);
	    return TCL_ERROR;
	}
    }

    statePtr->ctx = ctx;

    /*
     * We need to make sure that the channel works in binary (for the
     * encryption not to get goofed up).
     * We only want to adjust the buffering in pre-v2 channels, where
     * each channel in the stack maintained its own buffers.
     */
    Tcl_DStringInit(&upperChannelTranslation);
    Tcl_DStringInit(&upperChannelBlocking);
    Tcl_DStringInit(&upperChannelEOFChar);
    Tcl_DStringInit(&upperChannelEncoding);
    Tcl_GetChannelOption(interp, chan, "-eofchar", &upperChannelEOFChar);
    Tcl_GetChannelOption(interp, chan, "-encoding", &upperChannelEncoding);
    Tcl_GetChannelOption(interp, chan, "-translation", &upperChannelTranslation);
    Tcl_GetChannelOption(interp, chan, "-blocking", &upperChannelBlocking);
    Tcl_SetChannelOption(interp, chan, "-translation", "binary");
    Tcl_SetChannelOption(interp, chan, "-blocking", "true");
    dprintf("Consuming Tcl channel %s", Tcl_GetChannelName(chan));
    statePtr->self = Tcl_StackChannel(interp, Tls_ChannelType(), (ClientData) statePtr, (TCL_READABLE | TCL_WRITABLE), chan);
    dprintf("Created channel named %s", Tcl_GetChannelName(statePtr->self));
    if (statePtr->self == (Tcl_Channel) NULL) {
	/*
	 * No use of Tcl_EventuallyFree because no possible Tcl_Preserve.
	 */
	Tls_Free((char *) statePtr);
	return TCL_ERROR;
    }

    Tcl_SetChannelOption(interp, statePtr->self, "-translation", Tcl_DStringValue(&upperChannelTranslation));
    Tcl_SetChannelOption(interp, statePtr->self, "-encoding", Tcl_DStringValue(&upperChannelEncoding));
    Tcl_SetChannelOption(interp, statePtr->self, "-eofchar", Tcl_DStringValue(&upperChannelEOFChar));
    Tcl_SetChannelOption(interp, statePtr->self, "-blocking", Tcl_DStringValue(&upperChannelBlocking));

    /*
     * SSL Initialization
     */
    statePtr->ssl = SSL_new(statePtr->ctx);
    if (!statePtr->ssl) {
	/* SSL library error */
	Tcl_AppendResult(interp, "couldn't construct ssl session: ", REASON(), (char *) NULL);
	Tls_Free((char *) statePtr);
	return TCL_ERROR;
    }

#ifndef OPENSSL_NO_TLSEXT
    if (servername) {
	if (!SSL_set_tlsext_host_name(statePtr->ssl, servername) && require) {
	    Tcl_AppendResult(interp, "setting TLS host name extension failed", (char *) NULL);
            Tls_Free((char *) statePtr);
            return TCL_ERROR;
        }
    }
    if (alpn) {
	/* Convert a Tcl list into a protocol-list in wire-format */
	unsigned char *protos, *p;
	unsigned int protoslen = 0;
	int i, len, cnt;
	Tcl_Obj **list;
	if (Tcl_ListObjGetElements(interp, alpn, &cnt, &list) != TCL_OK) {
	    Tls_Free((char *) statePtr);
	    return TCL_ERROR;
	}
	/* Determine the memory required for the protocol-list */
	for (i = 0; i < cnt; i++) {
	    Tcl_GetStringFromObj(list[i], &len);
	    if (len > 255) {
		Tcl_AppendResult(interp, "alpn protocol name too long", (char *) NULL);
		Tls_Free((char *) statePtr);
		return TCL_ERROR;
	    }
	    protoslen += 1 + len;
	}
	/* Build the complete protocol-list */
	protos = ckalloc(protoslen);
	/* protocol-lists consist of 8-bit length-prefixed, byte strings */
	for (i = 0, p = protos; i < cnt; i++) {
	    char *str = Tcl_GetStringFromObj(list[i], &len);
	    *p++ = len;
	    memcpy(p, str, len);
	    p += len;
	}
	/* Note: This functions reverses the return value convention */
	if (SSL_set_alpn_protos(statePtr->ssl, protos, protoslen)) {
	    Tcl_AppendResult(interp, "failed to set alpn protocols", (char *) NULL);
	    Tls_Free((char *) statePtr);
	    ckfree(protos);
	    return TCL_ERROR;
	}
	/* SSL_set_alpn_protos makes a copy of the protocol-list */
	ckfree(protos);
    }
#endif

    /*
     * SSL Callbacks
     */
    SSL_set_app_data(statePtr->ssl, (void *)statePtr);	/* point back to us */
    SSL_set_verify(statePtr->ssl, verify, VerifyCallback);
    SSL_CTX_set_info_callback(statePtr->ctx, InfoCallback);

    /* Create Tcl_Channel BIO Handler */
    statePtr->p_bio	= BIO_new_tcl(statePtr, BIO_NOCLOSE);
    statePtr->bio	= BIO_new(BIO_f_ssl());

    if (server) {
	statePtr->flags |= TLS_TCL_SERVER;
	SSL_set_accept_state(statePtr->ssl);
    } else {
	SSL_set_connect_state(statePtr->ssl);
    }
    SSL_set_bio(statePtr->ssl, statePtr->p_bio, statePtr->p_bio);
    BIO_set_ssl(statePtr->bio, statePtr->ssl, BIO_NOCLOSE);

    /*
     * End of SSL Init
     */
    dprintf("Returning %s", Tcl_GetChannelName(statePtr->self));
    Tcl_SetResult(interp, (char *) Tcl_GetChannelName(statePtr->self), TCL_VOLATILE);

    return TCL_OK;
	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * UnimportObjCmd --
 *
 *	This procedure is invoked to remove the topmost channel filter.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	May modify the behavior of an IO channel.
 *
 *-------------------------------------------------------------------
 */
static int
UnimportObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    Tcl_Channel chan;		/* The channel to set a mode on. */

    dprintf("Called");

    if (objc != 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "channel");
	return TCL_ERROR;
    }

    chan = Tcl_GetChannel(interp, Tcl_GetString(objv[1]), NULL);
    if (chan == (Tcl_Channel) NULL) {
	return TCL_ERROR;
    }

    /*
     * Make sure to operate on the topmost channel
     */
    chan = Tcl_GetTopChannel(chan);

    if (Tcl_GetChannelType(chan) != Tls_ChannelType()) {
	Tcl_AppendResult(interp, "bad channel \"", Tcl_GetChannelName(chan),
		"\": not a TLS channel", NULL);
	return TCL_ERROR;
    }

    if (Tcl_UnstackChannel(interp, chan) == TCL_ERROR) {
	return TCL_ERROR;
    }

    return TCL_OK;
	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * CTX_Init -- construct a SSL_CTX instance
 *
 * Results:
 *	A valid SSL_CTX instance or NULL.
 *
 * Side effects:
 *	constructs SSL context (CTX)
 *
 *-------------------------------------------------------------------
 */
static SSL_CTX *
CTX_Init(State *statePtr, int isServer, int proto, char *keyfile, char *certfile,
    unsigned char *key, unsigned char *cert, int key_len, int cert_len, char *CAdir,
    char *CAfile, char *ciphers, char *DHparams) {
    Tcl_Interp *interp = statePtr->interp;
    SSL_CTX *ctx = NULL;
    Tcl_DString ds;
    Tcl_DString ds1;
    int off = 0;
    int load_private_key;
    const SSL_METHOD *method;

    dprintf("Called");

    if (!proto) {
	Tcl_AppendResult(interp, "no valid protocol selected", NULL);
	return (SSL_CTX *)0;
    }

    /* create SSL context */
#if OPENSSL_VERSION_NUMBER >= 0x10101000L || defined(NO_SSL2) || defined(OPENSSL_NO_SSL2)
    if (ENABLED(proto, TLS_PROTO_SSL2)) {
	Tcl_AppendResult(interp, "SSL2 protocol not supported", NULL);
	return (SSL_CTX *)0;
    }
#endif
#if defined(NO_SSL3) || defined(OPENSSL_NO_SSL3)
    if (ENABLED(proto, TLS_PROTO_SSL3)) {
	Tcl_AppendResult(interp, "SSL3 protocol not supported", NULL);
	return (SSL_CTX *)0;
    }
#endif
#if defined(NO_TLS1) || defined(OPENSSL_NO_TLS1)
    if (ENABLED(proto, TLS_PROTO_TLS1)) {
	Tcl_AppendResult(interp, "TLS 1.0 protocol not supported", NULL);
	return (SSL_CTX *)0;
    }
#endif
#if defined(NO_TLS1_1) || defined(OPENSSL_NO_TLS1_1)
    if (ENABLED(proto, TLS_PROTO_TLS1_1)) {
	Tcl_AppendResult(interp, "TLS 1.1 protocol not supported", NULL);
	return (SSL_CTX *)0;
    }
#endif
#if defined(NO_TLS1_2) || defined(OPENSSL_NO_TLS1_2)
    if (ENABLED(proto, TLS_PROTO_TLS1_2)) {
	Tcl_AppendResult(interp, "TLS 1.2 protocol not supported", NULL);
	return (SSL_CTX *)0;
    }
#endif
#if defined(NO_TLS1_3) || defined(OPENSSL_NO_TLS1_3)
    if (ENABLED(proto, TLS_PROTO_TLS1_3)) {
	Tcl_AppendResult(interp, "TLS 1.3 protocol not supported", NULL);
	return (SSL_CTX *)0;
    }
#endif

    switch (proto) {
#if OPENSSL_VERSION_NUMBER < 0x10101000L && !defined(NO_SSL2) && !defined(OPENSSL_NO_SSL2)
    case TLS_PROTO_SSL2:
	method = SSLv2_method();
	break;
#endif
#if !defined(NO_SSL3) && !defined(OPENSSL_NO_SSL3)
    case TLS_PROTO_SSL3:
	method = SSLv3_method();
	break;
#endif
#if !defined(NO_TLS1) && !defined(OPENSSL_NO_TLS1)
    case TLS_PROTO_TLS1:
	method = TLSv1_method();
	break;
#endif
#if !defined(NO_TLS1_1) && !defined(OPENSSL_NO_TLS1_1)
    case TLS_PROTO_TLS1_1:
	method = TLSv1_1_method();
	break;
#endif
#if !defined(NO_TLS1_2) && !defined(OPENSSL_NO_TLS1_2)
    case TLS_PROTO_TLS1_2:
	method = TLSv1_2_method();
	break;
#endif
#if !defined(NO_TLS1_3) && !defined(OPENSSL_NO_TLS1_3)
    case TLS_PROTO_TLS1_3:
	/*
	 * The version range is constrained below,
	 * after the context is created.  Use the
	 * generic method here.
	 */
	method = TLS_method();
	break;
#endif
    default:
#if OPENSSL_VERSION_NUMBER >= 0x10100000L
	/* Negotiate highest available SSL/TLS version */
	method = TLS_method();
#else
	method = SSLv23_method();
#endif
#if OPENSSL_VERSION_NUMBER < 0x10100000L && !defined(NO_SSL2) && !defined(OPENSSL_NO_SSL2)
	off |= (ENABLED(proto, TLS_PROTO_SSL2)   ? 0 : SSL_OP_NO_SSLv2);
#endif
#if !defined(NO_SSL3) && !defined(OPENSSL_NO_SSL3)
	off |= (ENABLED(proto, TLS_PROTO_SSL3)   ? 0 : SSL_OP_NO_SSLv3);
#endif
#if !defined(NO_TLS1) && !defined(OPENSSL_NO_TLS1)
	off |= (ENABLED(proto, TLS_PROTO_TLS1)   ? 0 : SSL_OP_NO_TLSv1);
#endif
#if !defined(NO_TLS1_1) && !defined(OPENSSL_NO_TLS1_1)
	off |= (ENABLED(proto, TLS_PROTO_TLS1_1) ? 0 : SSL_OP_NO_TLSv1_1);
#endif
#if !defined(NO_TLS1_2) && !defined(OPENSSL_NO_TLS1_2)
	off |= (ENABLED(proto, TLS_PROTO_TLS1_2) ? 0 : SSL_OP_NO_TLSv1_2);
#endif
#if !defined(NO_TLS1_3) && !defined(OPENSSL_NO_TLS1_3)
	off |= (ENABLED(proto, TLS_PROTO_TLS1_3) ? 0 : SSL_OP_NO_TLSv1_3);
#endif
	break;
    }

    ctx = SSL_CTX_new(method);

    if (!ctx) {
	return(NULL);
    }

    if (getenv(SSLKEYLOGFILE)) {
	SSL_CTX_set_keylog_callback(ctx, KeyLogCallback);
    }

#if !defined(NO_TLS1_3) && !defined(OPENSSL_NO_TLS1_3)
    if (proto == TLS_PROTO_TLS1_3) {
	SSL_CTX_set_min_proto_version(ctx, TLS1_3_VERSION);
	SSL_CTX_set_max_proto_version(ctx, TLS1_3_VERSION);

	if (!isServer) {
	    SSL_CTX_set_options(ctx, SSL_OP_CIPHER_SERVER_PREFERENCE);
	}
    }
#endif

    SSL_CTX_set_app_data(ctx, (void*)interp);	/* remember the interpreter */
    SSL_CTX_set_options(ctx, SSL_OP_ALL);	/* all SSL bug workarounds */
    SSL_CTX_set_options(ctx, off);		/* disable protocol versions */
#if OPENSSL_VERSION_NUMBER < 0x10101000L
    SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);	/* handle new handshakes in background */
#endif
    SSL_CTX_sess_set_cache_size(ctx, 128);

    if (ciphers != NULL)
	SSL_CTX_set_cipher_list(ctx, ciphers);

    /* set some callbacks */
    SSL_CTX_set_default_passwd_cb(ctx, PasswordCallback);

#ifndef BSAFE
    SSL_CTX_set_default_passwd_cb_userdata(ctx, (void *)statePtr);
#endif

    /* read a Diffie-Hellman parameters file, or use the built-in one */
#ifdef OPENSSL_NO_DH
    if (DHparams != NULL) {
	Tcl_AppendResult(interp, "DH parameter support not available", (char *) NULL);
	SSL_CTX_free(ctx);
	return (SSL_CTX *)0;
    }
#else
    {
	DH* dh;
	if (DHparams != NULL) {
	    BIO *bio;
	    Tcl_DStringInit(&ds);
	    bio = BIO_new_file(F2N(DHparams, &ds), "r");
	    if (!bio) {
		Tcl_DStringFree(&ds);
		Tcl_AppendResult(interp, "Could not find DH parameters file", (char *) NULL);
		SSL_CTX_free(ctx);
		return (SSL_CTX *)0;
	    }

	    dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
	    BIO_free(bio);
	    Tcl_DStringFree(&ds);
	    if (!dh) {
		Tcl_AppendResult(interp, "Could not read DH parameters from file", (char *) NULL);
		SSL_CTX_free(ctx);
		return (SSL_CTX *)0;
	    }
	} else {
	    dh = get_dhParams();
	}
	SSL_CTX_set_tmp_dh(ctx, dh);
	DH_free(dh);
    }
#endif

    /* set our certificate */
    load_private_key = 0;
    if (certfile != NULL) {
	load_private_key = 1;

	Tcl_DStringInit(&ds);

	if (SSL_CTX_use_certificate_file(ctx, F2N(certfile, &ds), SSL_FILETYPE_PEM) <= 0) {
	    Tcl_DStringFree(&ds);
	    Tcl_AppendResult(interp, "unable to set certificate file ", certfile, ": ",
			     REASON(), (char *) NULL);
	    SSL_CTX_free(ctx);
	    return (SSL_CTX *)0;
	}
    } else if (cert != NULL) {
	load_private_key = 1;
	if (SSL_CTX_use_certificate_ASN1(ctx, cert_len, cert) <= 0) {
	    Tcl_DStringFree(&ds);
	    Tcl_AppendResult(interp, "unable to set certificate: ",
			     REASON(), (char *) NULL);
	    SSL_CTX_free(ctx);
	    return (SSL_CTX *)0;
	}
    } else {
	certfile = (char*)X509_get_default_cert_file();

	if (SSL_CTX_use_certificate_file(ctx, certfile, SSL_FILETYPE_PEM) <= 0) {
#if 0
	    Tcl_DStringFree(&ds);
	    Tcl_AppendResult(interp, "unable to use default certificate file ", certfile, ": ",
			     REASON(), (char *) NULL);
	    SSL_CTX_free(ctx);
	    return (SSL_CTX *)0;
#endif
	}
    }

    /* set our private key */
    if (load_private_key) {
	if (keyfile == NULL && key == NULL) {
	    keyfile = certfile;
	}

	if (keyfile != NULL) {
	    /* get the private key associated with this certificate */
	    if (keyfile == NULL) {
		keyfile = certfile;
	    }

	    if (SSL_CTX_use_PrivateKey_file(ctx, F2N(keyfile, &ds), SSL_FILETYPE_PEM) <= 0) {
		Tcl_DStringFree(&ds);
		/* flush the passphrase which might be left in the result */
		Tcl_SetResult(interp, NULL, TCL_STATIC);
		Tcl_AppendResult(interp, "unable to set public key file ", keyfile, " ",
			         REASON(), (char *) NULL);
		SSL_CTX_free(ctx);
		return (SSL_CTX *)0;
	    }
	    Tcl_DStringFree(&ds);

	} else if (key != NULL) {
	    if (SSL_CTX_use_PrivateKey_ASN1(EVP_PKEY_RSA, ctx, key,key_len) <= 0) {
		Tcl_DStringFree(&ds);
		/* flush the passphrase which might be left in the result */
		Tcl_SetResult(interp, NULL, TCL_STATIC);
		Tcl_AppendResult(interp, "unable to set public key: ", REASON(), (char *) NULL);
		SSL_CTX_free(ctx);
		return (SSL_CTX *)0;
	    }
	}
	/* Now we know that a key and cert have been set against
	 * the SSL context */
	if (!SSL_CTX_check_private_key(ctx)) {
	    Tcl_AppendResult(interp, "private key does not match the certificate public key",
			     (char *) NULL);
	    SSL_CTX_free(ctx);
	    return (SSL_CTX *)0;
	}
    }

    /* Set verification CAs */
    Tcl_DStringInit(&ds);
    Tcl_DStringInit(&ds1);
    if (!SSL_CTX_load_verify_locations(ctx, F2N(CAfile, &ds), F2N(CAdir, &ds1)) ||
	!SSL_CTX_set_default_verify_paths(ctx)) {
#if 0
	Tcl_DStringFree(&ds);
	Tcl_DStringFree(&ds1);
	/* Don't currently care if this fails */
	Tcl_AppendResult(interp, "SSL default verify paths: ", REASON(), (char *) NULL);
	SSL_CTX_free(ctx);
	return (SSL_CTX *)0;
#endif
    }

    /* https://sourceforge.net/p/tls/bugs/57/ */
    /* XXX:TODO: Let the user supply values here instead of something that exists on the filesystem */
    if (CAfile != NULL) {
	STACK_OF(X509_NAME) *certNames = SSL_load_client_CA_file(F2N(CAfile, &ds));
	if (certNames != NULL) {
	    SSL_CTX_set_client_CA_list(ctx, certNames);
	}
    }

    Tcl_DStringFree(&ds);
    Tcl_DStringFree(&ds1);
    return ctx;
}

/*
 *-------------------------------------------------------------------
 *
 * StatusObjCmd -- return certificate for connected peer.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------
 */
static int
StatusObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    State *statePtr;
    X509 *peer;
    Tcl_Obj *objPtr;
    Tcl_Channel chan;
    char *channelName, *ciphers;
    int mode;
#ifndef OPENSSL_NO_TLSEXT
    const unsigned char *proto;
    unsigned int len;
#endif

    dprintf("Called");

    switch (objc) {
	case 2:
	    channelName = Tcl_GetStringFromObj(objv[1], NULL);
	    break;

	case 3:
	    if (!strcmp (Tcl_GetString (objv[1]), "-local")) {
		channelName = Tcl_GetStringFromObj(objv[2], NULL);
		break;
	    }
	    /* else fall-through ... */
#if defined(__GNUC__)
	    __attribute__((fallthrough));
#endif
	default:
	    Tcl_WrongNumArgs(interp, 1, objv, "?-local? channel");
	    return TCL_ERROR;
    }

    chan = Tcl_GetChannel(interp, channelName, &mode);
    if (chan == (Tcl_Channel) NULL) {
	return TCL_ERROR;
    }
    /*
     * Make sure to operate on the topmost channel
     */
    chan = Tcl_GetTopChannel(chan);
    if (Tcl_GetChannelType(chan) != Tls_ChannelType()) {
	Tcl_AppendResult(interp, "bad channel \"", Tcl_GetChannelName(chan),
		"\": not a TLS channel", NULL);
	return TCL_ERROR;
    }
    statePtr = (State *) Tcl_GetChannelInstanceData(chan);
    if (objc == 2) {
	peer = SSL_get_peer_certificate(statePtr->ssl);
    } else {
	peer = SSL_get_certificate(statePtr->ssl);
    }
    if (peer) {
	objPtr = Tls_NewX509Obj(interp, peer);
	if (objc == 2) { X509_free(peer); }
    } else {
	objPtr = Tcl_NewListObj(0, NULL);
    }

    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("sbits", -1));
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewIntObj(SSL_get_cipher_bits(statePtr->ssl, NULL)));

    ciphers = (char*)SSL_get_cipher(statePtr->ssl);
    if ((ciphers != NULL) && (strcmp(ciphers, "(NONE)") != 0)) {
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("cipher", -1));
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(SSL_get_cipher(statePtr->ssl), -1));
    }

#ifndef OPENSSL_NO_TLSEXT
    /* Report the selected protocol as a result of the negotiation */
    SSL_get0_alpn_selected(statePtr->ssl, &proto, &len);
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("alpn", -1));
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj((char *)proto, (int)len));
#endif
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("version", -1));
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(SSL_get_version(statePtr->ssl), -1));

    Tcl_SetObjResult(interp, objPtr);
    return TCL_OK;
	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * VersionObjCmd -- return version string from OpenSSL.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------
 */
static int
VersionObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    Tcl_Obj *objPtr;

    dprintf("Called");

    objPtr = Tcl_NewStringObj(OPENSSL_VERSION_TEXT, -1);
    Tcl_SetObjResult(interp, objPtr);

    return TCL_OK;
	clientData = clientData;
	objc = objc;
	objv = objv;
}

/*
 *-------------------------------------------------------------------
 *
 * MiscObjCmd -- misc commands
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------
 */
static int
MiscObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    static const char *commands [] = { "req", "strreq", NULL };
    enum command { C_REQ, C_STRREQ, C_DUMMY };
    int cmd, isStr;
    char buffer[16384];

    dprintf("Called");

    if (objc < 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "subcommand ?args?");
	return TCL_ERROR;
    }
    if (Tcl_GetIndexFromObj(interp, objv[1], commands, "command", 0,&cmd) != TCL_OK) {
	return TCL_ERROR;
    }

    isStr = (cmd == C_STRREQ);
    switch ((enum command) cmd) {
	case C_REQ:
	case C_STRREQ: {
	    EVP_PKEY *pkey=NULL;
	    X509 *cert=NULL;
	    X509_NAME *name=NULL;
	    Tcl_Obj **listv;
	    int listc,i;

	    BIO *out=NULL;

	    char *k_C="",*k_ST="",*k_L="",*k_O="",*k_OU="",*k_CN="",*k_Email="";
	    char *keyout,*pemout,*str;
	    int keysize,serial=0,days=365;

#if OPENSSL_VERSION_NUMBER <= 0x10100000L
	    RSA *rsa = NULL;
#elif OPENSSL_VERSION_NUMBER < 0x30000000L
	    BIGNUM *bne = NULL;
	    RSA *rsa = NULL;
#else
	    EVP_PKEY_CTX *ctx = NULL;
#endif

	    if ((objc<5) || (objc>6)) {
		Tcl_WrongNumArgs(interp, 2, objv, "keysize keyfile certfile ?info?");
		return TCL_ERROR;
	    }

	    if (Tcl_GetIntFromObj(interp, objv[2], &keysize) != TCL_OK) {
		return TCL_ERROR;
	    }
	    keyout=Tcl_GetString(objv[3]);
	    pemout=Tcl_GetString(objv[4]);
	    if (isStr) {
		Tcl_SetVar(interp,keyout,"",0);
		Tcl_SetVar(interp,pemout,"",0);
	    }

	    if (objc>=6) {
		if (Tcl_ListObjGetElements(interp, objv[5],
			&listc, &listv) != TCL_OK) {
		    return TCL_ERROR;
		}

		if ((listc%2) != 0) {
		    Tcl_SetResult(interp,"Information list must have even number of arguments",NULL);
		    return TCL_ERROR;
		}
		for (i=0; i<listc; i+=2) {
		    str=Tcl_GetString(listv[i]);
		    if (strcmp(str,"days")==0) {
			if (Tcl_GetIntFromObj(interp,listv[i+1],&days)!=TCL_OK)
			    return TCL_ERROR;
		    } else if (strcmp(str,"serial")==0) {
			if (Tcl_GetIntFromObj(interp,listv[i+1],&serial)!=TCL_OK)
			    return TCL_ERROR;
		    } else if (strcmp(str,"C")==0) {
			k_C=Tcl_GetString(listv[i+1]);
		    } else if (strcmp(str,"ST")==0) {
			k_ST=Tcl_GetString(listv[i+1]);
		    } else if (strcmp(str,"L")==0) {
			k_L=Tcl_GetString(listv[i+1]);
		    } else if (strcmp(str,"O")==0) {
			k_O=Tcl_GetString(listv[i+1]);
		    } else if (strcmp(str,"OU")==0) {
			k_OU=Tcl_GetString(listv[i+1]);
		    } else if (strcmp(str,"CN")==0) {
			k_CN=Tcl_GetString(listv[i+1]);
		    } else if (strcmp(str,"Email")==0) {
			k_Email=Tcl_GetString(listv[i+1]);
		    } else {
			Tcl_SetResult(interp,"Unknown parameter",NULL);
			return TCL_ERROR;
		    }
		}
	    }

#if OPENSSL_VERSION_NUMBER <= 0x10100000L
	    pkey = EVP_PKEY_new();
	    rsa = RSA_generate_key(keysize, 0x10001, NULL, NULL);
	    if (pkey == NULL || rsa == NULL || !EVP_PKEY_assign_RSA(pkey, rsa)) {
		EVP_PKEY_free(pkey);
		/* RSA_free(rsa); freed by EVP_PKEY_free */
#elif OPENSSL_VERSION_NUMBER < 0x30000000L
	    bne = BN_new();
	    rsa = RSA_new();
	    pkey = EVP_PKEY_new();
	    if (bne == NULL || rsa == NULL || pkey == NULL || !BN_set_word(bne,RSA_F4) ||
		!RSA_generate_key_ex(rsa, keysize, bne, NULL) || !EVP_PKEY_assign_RSA(pkey, rsa)) {
		EVP_PKEY_free(pkey);
		/* RSA_free(rsa); freed by EVP_PKEY_free */
		BN_free(bne);
#else
	    pkey = EVP_RSA_gen((unsigned int) keysize);
	    ctx = EVP_PKEY_CTX_new(pkey,NULL);
	    if (pkey == NULL || ctx == NULL || !EVP_PKEY_keygen_init(ctx) ||
		!EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, keysize) || !EVP_PKEY_keygen(ctx, &pkey)) {
		EVP_PKEY_free(pkey);
		EVP_PKEY_CTX_free(ctx);
#endif
		Tcl_SetResult(interp,"Error generating private key",NULL);
		return TCL_ERROR;
	    } else {
		if (isStr) {
		    out=BIO_new(BIO_s_mem());
		    PEM_write_bio_PrivateKey(out,pkey,NULL,NULL,0,NULL,NULL);
		    i=BIO_read(out,buffer,sizeof(buffer)-1);
		    i=(i<0) ? 0 : i;
		    buffer[i]='\0';
		    Tcl_SetVar(interp,keyout,buffer,0);
		    BIO_flush(out);
		    BIO_free(out);
		} else {
		    out=BIO_new(BIO_s_file());
		    BIO_write_filename(out,keyout);
		    PEM_write_bio_PrivateKey(out,pkey,NULL,NULL,0,NULL,NULL);
		    /* PEM_write_bio_RSAPrivateKey(out, rsa, NULL, NULL, 0, NULL, NULL); */
		    BIO_free_all(out);
	 	}

		if ((cert=X509_new())==NULL) {
		    Tcl_SetResult(interp,"Error generating certificate request",NULL);
		    EVP_PKEY_free(pkey);
#if OPENSSL_VERSION_NUMBER > 0x10100000L && OPENSSL_VERSION_NUMBER < 0x30000000L
		    BN_free(bne);
#endif
		    return(TCL_ERROR);
		}

		X509_set_version(cert,2);
		ASN1_INTEGER_set(X509_get_serialNumber(cert),serial);
#if OPENSSL_VERSION_NUMBER < 0x10100000L
		X509_gmtime_adj(X509_get_notBefore(cert),0);
		X509_gmtime_adj(X509_get_notAfter(cert),(long)60*60*24*days);
#else
		X509_gmtime_adj(X509_getm_notBefore(cert),0);
		X509_gmtime_adj(X509_getm_notAfter(cert),(long)60*60*24*days);
#endif
		X509_set_pubkey(cert,pkey);

		name=X509_get_subject_name(cert);

		X509_NAME_add_entry_by_txt(name,"C", MBSTRING_ASC, (const unsigned char *) k_C, -1, -1, 0);
		X509_NAME_add_entry_by_txt(name,"ST", MBSTRING_ASC, (const unsigned char *) k_ST, -1, -1, 0);
		X509_NAME_add_entry_by_txt(name,"L", MBSTRING_ASC, (const unsigned char *) k_L, -1, -1, 0);
		X509_NAME_add_entry_by_txt(name,"O", MBSTRING_ASC, (const unsigned char *) k_O, -1, -1, 0);
		X509_NAME_add_entry_by_txt(name,"OU", MBSTRING_ASC, (const unsigned char *) k_OU, -1, -1, 0);
		X509_NAME_add_entry_by_txt(name,"CN", MBSTRING_ASC, (const unsigned char *) k_CN, -1, -1, 0);
		X509_NAME_add_entry_by_txt(name,"Email", MBSTRING_ASC, (const unsigned char *) k_Email, -1, -1, 0);

		X509_set_subject_name(cert,name);

		if (!X509_sign(cert,pkey,EVP_sha256())) {
		    X509_free(cert);
		    EVP_PKEY_free(pkey);
#if OPENSSL_VERSION_NUMBER > 0x10100000L && OPENSSL_VERSION_NUMBER < 0x30000000L
		    BN_free(bne);
#endif
		    Tcl_SetResult(interp,"Error signing certificate",NULL);
		    return TCL_ERROR;
		}

		if (isStr) {
		    out=BIO_new(BIO_s_mem());
		    PEM_write_bio_X509(out,cert);
		    i=BIO_read(out,buffer,sizeof(buffer)-1);
		    i=(i<0) ? 0 : i;
		    buffer[i]='\0';
		    Tcl_SetVar(interp,pemout,buffer,0);
		    BIO_flush(out);
		    BIO_free(out);
		} else {
		    out=BIO_new(BIO_s_file());
		    BIO_write_filename(out,pemout);
		    PEM_write_bio_X509(out,cert);
		    BIO_free_all(out);
		}

		X509_free(cert);
		EVP_PKEY_free(pkey);
#if OPENSSL_VERSION_NUMBER > 0x10100000L && OPENSSL_VERSION_NUMBER < 0x30000000L
		BN_free(bne);
#endif
	    }
	}
	break;
    default:
	break;
    }
    return TCL_OK;
	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * Tls_Free --
 *
 *	This procedure cleans up when a SSL socket based channel
 *	is closed and its reference count falls below 1
 *
 * Results:
 *	none
 *
 * Side effects:
 *	Frees all the state
 *
 *-------------------------------------------------------------------
 */
void
Tls_Free(char *blockPtr) {
    State *statePtr = (State *)blockPtr;

    dprintf("Called");

    Tls_Clean(statePtr);
    ckfree(blockPtr);
}

/*
 *-------------------------------------------------------------------
 *
 * Tls_Clean --
 *
 *	This procedure cleans up when a SSL socket based channel
 *	is closed and its reference count falls below 1.  This should
 *	be called synchronously by the CloseProc, not in the
 *	EventuallyFree callback.
 *
 * Results:
 *	none
 *
 * Side effects:
 *	Frees all the state
 *
 *-------------------------------------------------------------------
 */
void Tls_Clean(State *statePtr) {
    dprintf("Called");

    /*
     * we're assuming here that we're single-threaded
     */
    if (statePtr->timer != (Tcl_TimerToken) NULL) {
	Tcl_DeleteTimerHandler(statePtr->timer);
	statePtr->timer = NULL;
    }

    if (statePtr->bio) {
	/* This will call SSL_shutdown. Bug 1414045 */
	dprintf("BIO_free_all(%p)", statePtr->bio);
	BIO_free_all(statePtr->bio);
	statePtr->bio = NULL;
    }
    if (statePtr->ssl) {
	dprintf("SSL_free(%p)", statePtr->ssl);
	SSL_free(statePtr->ssl);
	statePtr->ssl = NULL;
    }
    if (statePtr->ctx) {
	SSL_CTX_free(statePtr->ctx);
	statePtr->ctx = NULL;
    }
    if (statePtr->callback) {
	Tcl_DecrRefCount(statePtr->callback);
	statePtr->callback = NULL;
    }
    if (statePtr->password) {
	Tcl_DecrRefCount(statePtr->password);
	statePtr->password = NULL;
    }

    dprintf("Returning");
}

/*
 *-------------------------------------------------------------------
 *
 * Tls_Init --
 *
 *	This is a package initialization procedure, which is called
 *	by Tcl when this package is to be added to an interpreter.
 *
 * Results:  Ssl configured and loaded
 *
 * Side effects:
 *	 create the ssl command, initialize ssl context
 *
 *-------------------------------------------------------------------
 */
DLLEXPORT int Tls_Init(Tcl_Interp *interp) {
    const char tlsTclInitScript[] = {
#include "tls.tcl.h"
	0x00
    };

    dprintf("Called");

    /*
     * We only support Tcl 8.4 or newer
     */
    if (
#ifdef USE_TCL_STUBS
	Tcl_InitStubs(interp, "8.4", 0)
#else
	Tcl_PkgRequire(interp, "Tcl", "8.4-", 0)
#endif
	 == NULL) {
	return TCL_ERROR;
    }

    if (TlsLibInit(0) != TCL_OK) {
	Tcl_AppendResult(interp, "could not initialize SSL library", NULL);
	return TCL_ERROR;
    }

    Tcl_CreateObjCommand(interp, "tls::ciphers", CiphersObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::handshake", HandshakeObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::import", ImportObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::unimport", UnimportObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::status", StatusObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::version", VersionObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::misc", MiscObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);

    if (interp) {
	Tcl_Eval(interp, tlsTclInitScript);
    }

    return(Tcl_PkgProvide(interp, "tls", PACKAGE_VERSION));
}

/*
 *------------------------------------------------------*
 *
 *	Tls_SafeInit --
 *
 *	------------------------------------------------*
 *	Standard procedure required by 'load'.
 *	Initializes this extension for a safe interpreter.
 *	------------------------------------------------*
 *
 *	Side effects:
 *		As of 'Tls_Init'
 *
 *	Result:
 *		A standard Tcl error code.
 *
 *------------------------------------------------------*
 */
DLLEXPORT int Tls_SafeInit(Tcl_Interp *interp) {
    dprintf("Called");
    return(Tls_Init(interp));
}

/*
 *------------------------------------------------------*
 *
 *	TlsLibInit --
 *
 *	------------------------------------------------*
 *	Initializes SSL library once per application
 *	------------------------------------------------*
 *
 *	Side effects:
 *		initializes SSL library
 *
 *	Result:
 *		none
 *
 *------------------------------------------------------*
 */
static int TlsLibInit(int uninitialize) {
    static int initialized = 0;
    int status = TCL_OK;
#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
    size_t num_locks;
#endif

    if (uninitialize) {
        if (!initialized) {
            dprintf("Asked to uninitialize, but we are not initialized");

            return(TCL_OK);
        }

        dprintf("Asked to uninitialize");

#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
        Tcl_MutexLock(&init_mx);

#if OPENSSL_VERSION_NUMBER < 0x10000000L
        CRYPTO_set_locking_callback(NULL);
        CRYPTO_set_id_callback(NULL);
#elif OPENSSL_VERSION_NUMBER < 0x10100000L
        CRYPTO_set_locking_callback(NULL);
        CRYPTO_THREADID_set_callback(NULL)
#endif

        if (locks) {
            free(locks);
            locks = NULL;
            locksCount = 0;
        }
#endif
        initialized = 0;

#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
        Tcl_MutexUnlock(&init_mx);
#endif

        return(TCL_OK);
    }

    if (initialized) {
        dprintf("Called, but using cached value");
        return(status);
    }

    dprintf("Called");

#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
    Tcl_MutexLock(&init_mx);
#endif
    initialized = 1;

#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
#if OPENSSL_VERSION_NUMBER < 0x10100000L
    num_locks = CRYPTO_num_locks();
#else
    num_locks = 1;
#endif
    locksCount = (int) num_locks;
    locks = malloc(sizeof(*locks) * num_locks);
    memset(locks, 0, sizeof(*locks) * num_locks);

#if OPENSSL_VERSION_NUMBER < 0x10000000L
    CRYPTO_set_locking_callback(CryptoThreadLockCallback);
    CRYPTO_set_id_callback(CryptoThreadIdCallback);
#elif OPENSSL_VERSION_NUMBER < 0x10100000L
    CRYPTO_set_locking_callback(CryptoThreadLockCallback);
    CRYPTO_THREADID_set_callback(CryptoThreadIdCallback)
#endif
#endif

# if OPENSSL_VERSION_NUMBER < 0x10100000L
    if (SSL_library_init() != 1) {
        status = TCL_ERROR;
        goto done;
    }
#else
    /* Initialize BOTH libcrypto and libssl. */
    OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS | OPENSSL_INIT_LOAD_CRYPTO_STRINGS
	| OPENSSL_INIT_ADD_ALL_CIPHERS | OPENSSL_INIT_ADD_ALL_DIGESTS, NULL);
#endif

# if OPENSSL_VERSION_NUMBER < 0x10100000L
    SSL_load_error_strings();
    ERR_load_crypto_strings();
#else
    /* Only initialize libcrypto  */
    OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
#endif

    BIO_new_tcl(NULL, 0);

#if 0
    /*
     * XXX:TODO: Remove this code and replace it with a check
     * for enough entropy and do not try to create our own
     * terrible entropy
     */
    /*
     * Seed the random number generator in the SSL library,
     * using the do/while construct because of the bug note in the
     * OpenSSL FAQ at http://www.openssl.org/support/faq.html#USER1
     *
     * The crux of the problem is that Solaris 7 does not have a
     * /dev/random or /dev/urandom device so it cannot gather enough
     * entropy from the RAND_seed() when TLS initializes and refuses
     * to go further. Earlier versions of OpenSSL carried on regardless.
     */
    srand((unsigned int) time((time_t *) NULL));
    do {
	for (i = 0; i < 16; i++) {
	    rnd_seed[i] = 1 + (char) (255.0 * rand()/(RAND_MAX+1.0));
	}
	RAND_seed(rnd_seed, sizeof(rnd_seed));
    } while (RAND_status() != 1);
#endif

# if OPENSSL_VERSION_NUMBER < 0x10100000L
done:
#endif
#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
	Tcl_MutexUnlock(&init_mx);
#endif

	return(status);
}

Added generic/tls.h version [bcbadd0481].































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/*
 * Copyright (C) 1997-2000 Matt Newman <[email protected]>
 *
 * TLS (aka SSL) Channel - can be layered on any bi-directional
 * Tcl_Channel (Note: Requires Trf Core Patch)
 *
 * This was built from scratch based upon observation of OpenSSL 0.9.2B
 *
 * Addition credit is due for Andreas Kupries ([email protected]), for
 * providing the Tcl_ReplaceChannel mechanism and working closely with me
 * to enhance it to support full fileevent semantics.
 *
 * Also work done by the follow people provided the impetus to do this "right":-
 *	tclSSL (Colin McCormack, Shared Technology)
 *	SSLtcl (Peter Antman)
 *
 */
 
#ifndef _TLS_H
#define _TLS_H

#include <tcl.h>

/*
 * Initialization routines -- our entire public C API.
 */
DLLEXPORT int Tls_Init(Tcl_Interp *interp);
DLLEXPORT int Tls_SafeInit(Tcl_Interp *interp);

#endif /* _TLS_H */

Added generic/tlsBIO.c version [2e81a5f072].






















































































































































































































































































































































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/*
 * Copyright (C) 1997-2000 Matt Newman <[email protected]>
 *
 * Provides BIO layer to interface openssl to Tcl.
 */

#include "tlsInt.h"

#ifdef TCLTLS_OPENSSL_PRE_1_1_API
#define BIO_get_data(bio)                ((bio)->ptr)
#define BIO_get_init(bio)                ((bio)->init)
#define BIO_get_shutdown(bio)            ((bio)->shutdown)
#define BIO_set_data(bio, val)           (bio)->ptr = (val)
#define BIO_set_init(bio, val)           (bio)->init = (val)
#define BIO_set_shutdown(bio, val)       (bio)->shutdown = (val)

/* XXX: This assumes the variable being assigned to is BioMethods */
#define BIO_meth_new(type_, name_)       (BIO_METHOD *)Tcl_Alloc(sizeof(BIO_METHOD)); \
					 memset(BioMethods, 0, sizeof(BIO_METHOD)); \
					 BioMethods->type = type_; \
					 BioMethods->name = name_;
#define BIO_meth_set_write(bio, val)     (bio)->bwrite = val;
#define BIO_meth_set_read(bio, val)      (bio)->bread = val;
#define BIO_meth_set_puts(bio, val)      (bio)->bputs = val;
#define BIO_meth_set_ctrl(bio, val)      (bio)->ctrl = val;
#define BIO_meth_set_create(bio, val)    (bio)->create = val;
#define BIO_meth_set_destroy(bio, val)   (bio)->destroy = val;
#endif

static int BioWrite(BIO *bio, const char *buf, int bufLen) {
    Tcl_Channel chan;
    int ret;
    int tclEofChan, tclErrno;

    chan = Tls_GetParent((State *) BIO_get_data(bio), 0);

    dprintf("[chan=%p] BioWrite(%p, <buf>, %d)", (void *)chan, (void *) bio, bufLen);

    ret = Tcl_WriteRaw(chan, buf, bufLen);

    tclEofChan = Tcl_Eof(chan);
    tclErrno = Tcl_GetErrno();

    dprintf("[chan=%p] BioWrite(%d) -> %d [tclEof=%d; tclErrno=%d]", (void *) chan, bufLen, ret, tclEofChan, Tcl_GetErrno());

    BIO_clear_flags(bio, BIO_FLAGS_WRITE | BIO_FLAGS_SHOULD_RETRY);

    if (tclEofChan && ret <= 0) {
	dprintf("Got EOF while reading, returning a Connection Reset error which maps to Soft EOF");
	Tcl_SetErrno(ECONNRESET);
	ret = 0;

    } else if (ret == 0) {
	dprintf("Got 0 from Tcl_WriteRaw, and EOF is not set; ret = 0");
	dprintf("Setting retry read flag");
	BIO_set_retry_read(bio);

    } else if (ret < 0) {
	dprintf("We got some kind of I/O error");

	if (tclErrno == EAGAIN) {
	    dprintf("It's EAGAIN");
	} else {
	    dprintf("It's an unepxected error: %s/%i", Tcl_ErrnoMsg(tclErrno), tclErrno);
	}

    } else {
	dprintf("Successfully wrote some data");
    }

    if (ret != -1 || (ret == -1 && tclErrno == EAGAIN)) {
	if (BIO_should_read(bio)) {
	    dprintf("Setting should retry read flag");

	    BIO_set_retry_read(bio);
	}
    }
    return(ret);
}

static int BioRead(BIO *bio, char *buf, int bufLen) {
    Tcl_Channel chan;
    int ret = 0;
    int tclEofChan, tclErrno;

    chan = Tls_GetParent((State *) BIO_get_data(bio), 0);

    dprintf("[chan=%p] BioRead(%p, <buf>, %d)", (void *) chan, (void *) bio, bufLen);

    if (buf == NULL) {
	return 0;
    }

    ret = Tcl_ReadRaw(chan, buf, bufLen);

    tclEofChan = Tcl_Eof(chan);
    tclErrno = Tcl_GetErrno();

    dprintf("[chan=%p] BioRead(%d) -> %d [tclEof=%d; tclErrno=%d]", (void *) chan, bufLen, ret, tclEofChan, tclErrno);

    BIO_clear_flags(bio, BIO_FLAGS_READ | BIO_FLAGS_SHOULD_RETRY);

    if (tclEofChan && ret <= 0) {
	dprintf("Got EOF while reading, returning a Connection Reset error which maps to Soft EOF");
	Tcl_SetErrno(ECONNRESET);
	ret = 0;

    } else if (ret == 0) {
	dprintf("Got 0 from Tcl_Read or Tcl_ReadRaw, and EOF is not set; ret = 0");
	dprintf("Setting retry read flag");
	BIO_set_retry_read(bio);

    } else if (ret < 0) {
	dprintf("We got some kind of I/O error");

	if (tclErrno == EAGAIN) {
	    dprintf("It's EAGAIN");
	} else {
	    dprintf("It's an unepxected error: %s/%i", Tcl_ErrnoMsg(tclErrno), tclErrno);
	}

    } else {
	dprintf("Successfully read some data");
    }

    if (ret != -1 || (ret == -1 && tclErrno == EAGAIN)) {
	if (BIO_should_write(bio)) {
	    dprintf("Setting should retry write flag");

	    BIO_set_retry_write(bio);
	}
    }

    dprintf("BioRead(%p, <buf>, %d) [%p] returning %i", (void *) bio, bufLen, (void *) chan, ret);

    return(ret);
}

static int BioPuts(BIO *bio, const char *str) {
    dprintf("BioPuts(%p, <string:%p>) called", bio, str);

    return BioWrite(bio, str, (int) strlen(str));
}

static long BioCtrl(BIO *bio, int cmd, long num, void *ptr) {
    Tcl_Channel chan;
    long ret = 1;

    chan = Tls_GetParent((State *) BIO_get_data(bio), 0);

	dprintf("BioCtrl(%p, 0x%x, 0x%lx, %p)", (void *) bio, cmd, num, ptr);

    switch (cmd) {
	case BIO_CTRL_RESET:
	    dprintf("Got BIO_CTRL_RESET");
	    num = 0;
			ret = 0;
			break;
	case BIO_C_FILE_SEEK:
	    dprintf("Got BIO_C_FILE_SEEK");
			ret = 0;
			break;
	case BIO_C_FILE_TELL:
	    dprintf("Got BIO_C_FILE_TELL");
	    ret = 0;
	    break;
	case BIO_CTRL_INFO:
	    dprintf("Got BIO_CTRL_INFO");
	    ret = 1;
	    break;
	case BIO_C_SET_FD:
	    dprintf("Unsupported call: BIO_C_SET_FD");
	    ret = -1;
	    break;
	case BIO_C_GET_FD:
	    dprintf("Unsupported call: BIO_C_GET_FD");
	    ret = -1;
	    break;
	case BIO_CTRL_GET_CLOSE:
	    dprintf("Got BIO_CTRL_CLOSE");
	    ret = BIO_get_shutdown(bio);
	    break;
	case BIO_CTRL_SET_CLOSE:
	    dprintf("Got BIO_SET_CLOSE");
	    BIO_set_shutdown(bio, num);
	    break;
	case BIO_CTRL_EOF:
	    dprintf("Got BIO_CTRL_EOF");
			ret = ((chan) ? Tcl_Eof(chan) : 1);
	    break;
	case BIO_CTRL_PENDING:
	    dprintf("Got BIO_CTRL_PENDING");
			ret = ((chan) ? ((Tcl_InputBuffered(chan) ? 1 : 0)) : 0);
	    dprintf("BIO_CTRL_PENDING(%d)", (int) ret);
	    break;
	case BIO_CTRL_WPENDING:
	    dprintf("Got BIO_CTRL_WPENDING");
	    ret = 0;
	    break;
	case BIO_CTRL_DUP:
	    dprintf("Got BIO_CTRL_DUP");
	    break;
	case BIO_CTRL_FLUSH:
	    dprintf("Got BIO_CTRL_FLUSH");
			ret = ((chan) && (Tcl_WriteRaw(chan, "", 0) >= 0) ? 1 : -1);
	    dprintf("BIO_CTRL_FLUSH returning value %li", ret);
	    break;
	case BIO_CTRL_PUSH:
	    dprintf("Got BIO_CTRL_PUSH");
	    ret = 0;
	    break;
	case BIO_CTRL_POP:
	    dprintf("Got BIO_CTRL_POP");
	    ret = 0;
	    break;
	case BIO_CTRL_SET:
	    dprintf("Got BIO_CTRL_SET");
	    ret = 0;
	    break;
	case BIO_CTRL_GET :
	    dprintf("Got BIO_CTRL_GET ");
	    ret = 0;
	    break;
#ifdef BIO_CTRL_GET_KTLS_SEND
	case BIO_CTRL_GET_KTLS_SEND:
	    dprintf("Got BIO_CTRL_GET_KTLS_SEND");
	    ret = 0;
	    break;
#endif
#ifdef BIO_CTRL_GET_KTLS_RECV
	case BIO_CTRL_GET_KTLS_RECV:
	    dprintf("Got BIO_CTRL_GET_KTLS_RECV");
	    ret = 0;
	    break;
#endif
	default:
	    dprintf("Got unknown control command (%i)", cmd);
	    ret = 0;
	    break;
    }
    return(ret);
}

static int BioNew(BIO *bio) {
    dprintf("BioNew(%p) called", bio);

    BIO_set_init(bio, 0);
    BIO_set_data(bio, NULL);
    BIO_clear_flags(bio, -1);
    return(1);
}

static int BioFree(BIO *bio) {
    if (bio == NULL) {
	return(0);
    }

    dprintf("BioFree(%p) called", bio);

    if (BIO_get_shutdown(bio)) {
	if (BIO_get_init(bio)) {
	    /*shutdown(bio->num, 2) */
	    /*closesocket(bio->num) */
	}

	BIO_set_init(bio, 0);
	BIO_clear_flags(bio, -1);
    }
    return(1);
}

BIO *BIO_new_tcl(State *statePtr, int flags) {
    BIO *bio;
    static BIO_METHOD *BioMethods = NULL;
#ifdef TCLTLS_SSL_USE_FASTPATH
    Tcl_Channel parentChannel;
    const Tcl_ChannelType *parentChannelType;
    void *parentChannelFdIn_p, *parentChannelFdOut_p;
    int parentChannelFdIn, parentChannelFdOut, parentChannelFd;
    int validParentChannelFd;
    int tclGetChannelHandleRet;
#endif

    dprintf("BIO_new_tcl() called");

    if (BioMethods == NULL) {
	BioMethods = BIO_meth_new(BIO_TYPE_TCL, "tcl");
	BIO_meth_set_write(BioMethods, BioWrite);
	BIO_meth_set_read(BioMethods, BioRead);
	BIO_meth_set_puts(BioMethods, BioPuts);
	BIO_meth_set_ctrl(BioMethods, BioCtrl);
	BIO_meth_set_create(BioMethods, BioNew);
	BIO_meth_set_destroy(BioMethods, BioFree);
    }

    if (statePtr == NULL) {
	dprintf("Asked to setup a NULL state, just creating the initial configuration");

	return(NULL);
    }

#ifdef TCLTLS_SSL_USE_FASTPATH
    /*
     * If the channel can be mapped back to a file descriptor, just use the file descriptor
     * with the SSL library since it will likely be optimized for this.
     */
    parentChannel = Tls_GetParent(statePtr, 0);
    parentChannelType = Tcl_GetChannelType(parentChannel);

    validParentChannelFd = 0;
    if (strcmp(parentChannelType->typeName, "tcp") == 0) {
	tclGetChannelHandleRet = Tcl_GetChannelHandle(parentChannel, TCL_READABLE, (ClientData) &parentChannelFdIn_p);
	if (tclGetChannelHandleRet == TCL_OK) {
	    tclGetChannelHandleRet = Tcl_GetChannelHandle(parentChannel, TCL_WRITABLE, (ClientData) &parentChannelFdOut_p);
	    if (tclGetChannelHandleRet == TCL_OK) {
		parentChannelFdIn = PTR2INT(parentChannelFdIn_p);
		parentChannelFdOut = PTR2INT(parentChannelFdOut_p);
		if (parentChannelFdIn == parentChannelFdOut) {
		    parentChannelFd = parentChannelFdIn;
		    validParentChannelFd = 1;
		}
	    }
	}
    }

    if (validParentChannelFd) {
	dprintf("We found a shortcut, this channel is backed by a socket: %i", parentChannelFdIn);
	bio = BIO_new_socket(parentChannelFd, flags);
	statePtr->flags |= TLS_TCL_FASTPATH;
	return(bio);
    }

    dprintf("Falling back to Tcl I/O for this channel");
#endif

    bio = BIO_new(BioMethods);
    BIO_set_data(bio, statePtr);
    BIO_set_shutdown(bio, flags);
    BIO_set_init(bio, 1);
    return(bio);
}

Added generic/tlsIO.c version [ff0429678e].































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
 * Copyright (C) 1997-2000 Matt Newman <[email protected]>
 * Copyright (C) 2000 Ajuba Solutions
 *
 * TLS (aka SSL) Channel - can be layered on any bi-directional
 * Tcl_Channel (Note: Requires Trf Core Patch)
 *
 * This was built from scratch based upon observation of OpenSSL 0.9.2B
 *
 * Addition credit is due for Andreas Kupries ([email protected]), for
 * providing the Tcl_ReplaceChannel mechanism and working closely with me
 * to enhance it to support full fileevent semantics.
 *
 * Also work done by the follow people provided the impetus to do this "right":
 *    tclSSL (Colin McCormack, Shared Technology)
 *    SSLtcl (Peter Antman)
 *
 */

#include "tlsInt.h"

/*
 * Forward declarations
 */
static void TlsChannelHandlerTimer(ClientData clientData);

/*
 * TLS Channel Type
 */
static Tcl_ChannelType *tlsChannelType = NULL;

/*
 *-------------------------------------------------------------------
 *
 * TlsBlockModeProc --
 *
 *    This procedure is invoked by the generic IO level
 *       to set blocking and nonblocking modes
 * Results:
 *    0 if successful, errno when failed.
 *
 * Side effects:
 *    Sets the device into blocking or nonblocking mode.
 *
 *-------------------------------------------------------------------
 */
static int TlsBlockModeProc(ClientData instanceData, int mode) {
    State *statePtr = (State *) instanceData;

    if (mode == TCL_MODE_NONBLOCKING) {
	statePtr->flags |= TLS_TCL_ASYNC;
    } else {
	statePtr->flags &= ~(TLS_TCL_ASYNC);
    }
    return(0);
}

/*
 *-------------------------------------------------------------------
 *
 * TlsCloseProc --
 *
 *    This procedure is invoked by the generic IO level to perform
 *    channel-type-specific cleanup when a SSL socket based channel
 *    is closed.
 *
 *    Note: we leave the underlying socket alone, is this right?
 *
 * Results:
 *    0 if successful, the value of Tcl_GetErrno() if failed.
 *
 * Side effects:
 *    Closes the socket of the channel.
 *
 *-------------------------------------------------------------------
 */
static int TlsCloseProc(ClientData instanceData, Tcl_Interp *interp) {
    State *statePtr = (State *) instanceData;

    dprintf("TlsCloseProc(%p)", (void *) statePtr);

    Tls_Clean(statePtr);
    Tcl_EventuallyFree((ClientData)statePtr, Tls_Free);
    return(0);

	/* Interp is unused. */
	interp = interp;
}

static int TlsCloseProc2(ClientData instanceData, Tcl_Interp *interp, int flags) {
    if ((flags & (TCL_CLOSE_READ|TCL_CLOSE_WRITE)) == 0) {
	return TlsCloseProc(instanceData, interp);
    }
    return EINVAL;
}

/*
 *------------------------------------------------------*
 *
 *    Tls_WaitForConnect --
 *
 *    Sideeffects:
 *        Issues SSL_accept or SSL_connect
 *
 *    Result:
 *        None.
 *
 *------------------------------------------------------*
 */
int Tls_WaitForConnect(State *statePtr, int *errorCodePtr, int handshakeFailureIsPermanent) {
    unsigned long backingError;
    int err, rc;
    int bioShouldRetry;

    dprintf("WaitForConnect(%p)", (void *) statePtr);
    dprintFlags(statePtr);

    if (!(statePtr->flags & TLS_TCL_INIT)) {
	dprintf("Tls_WaitForConnect called on already initialized channel -- returning with immediate success");
	*errorCodePtr = 0;
	return(0);
    }

    if (statePtr->flags & TLS_TCL_HANDSHAKE_FAILED) {
	/*
	 * Different types of operations have different requirements
	 * SSL being established
	 */
	if (handshakeFailureIsPermanent) {
	    dprintf("Asked to wait for a TLS handshake that has already failed.  Returning fatal error");
	    *errorCodePtr = ECONNABORTED;
	} else {
	    dprintf("Asked to wait for a TLS handshake that has already failed.  Returning soft error");
	    *errorCodePtr = ECONNRESET;
	}
	return(-1);
    }

    for (;;) {
	/* Not initialized yet! */
	if (statePtr->flags & TLS_TCL_SERVER) {
	    dprintf("Calling SSL_accept()");
	    err = SSL_accept(statePtr->ssl);

	} else {
	    dprintf("Calling SSL_connect()");
	    err = SSL_connect(statePtr->ssl);
	}

	if (err > 0) {
	    dprintf("That seems to have gone okay");

	    err = BIO_flush(statePtr->bio);
	    if (err <= 0) {
		dprintf("Flushing the lower layers failed, this will probably terminate this session");
	    }
	}

	rc = SSL_get_error(statePtr->ssl, err);

	dprintf("Got error: %i (rc = %i)", err, rc);

	bioShouldRetry = 0;
	if (err <= 0) {
	    if (rc == SSL_ERROR_WANT_CONNECT || rc == SSL_ERROR_WANT_ACCEPT || rc == SSL_ERROR_WANT_READ || rc == SSL_ERROR_WANT_WRITE) {
		bioShouldRetry = 1;
	    } else if (BIO_should_retry(statePtr->bio)) {
		bioShouldRetry = 1;
	    } else if (rc == SSL_ERROR_SYSCALL && Tcl_GetErrno() == EAGAIN) {
		bioShouldRetry = 1;
	    }
	} else {
	    if (!SSL_is_init_finished(statePtr->ssl)) {
		bioShouldRetry = 1;
	    }
	}

	if (bioShouldRetry) {
	    dprintf("The I/O did not complete -- but we should try it again");

	    if (statePtr->flags & TLS_TCL_ASYNC) {
		dprintf("Returning EAGAIN so that it can be retried later");

		*errorCodePtr = EAGAIN;
		return(-1);
	    } else {
		dprintf("Doing so now");

		continue;
	    }
	}

	dprintf("We have either completely established the session or completely failed it -- there is no more need to ever retry it though");
	break;
    }

    *errorCodePtr = EINVAL;

    switch (rc) {
	case SSL_ERROR_NONE:
	    /* The connection is up, we are done here */
	    dprintf("The connection is up");
	    break;
	case SSL_ERROR_ZERO_RETURN:
	    dprintf("SSL_ERROR_ZERO_RETURN: Connect returned an invalid value...")
	    return(-1);
	case SSL_ERROR_SYSCALL:
	    backingError = ERR_get_error();

	    if (backingError == 0 && err == 0) {
		dprintf("EOF reached")
		*errorCodePtr = ECONNRESET;
	    } else if (backingError == 0 && err == -1) {
		dprintf("I/O error occurred (errno = %lu)", (unsigned long) Tcl_GetErrno());
		*errorCodePtr = Tcl_GetErrno();
		if (*errorCodePtr == ECONNRESET) {
		    *errorCodePtr = ECONNABORTED;
		}
	    } else {
		dprintf("I/O error occurred (backingError = %lu)", backingError);
		*errorCodePtr = backingError;
		if (*errorCodePtr == ECONNRESET) {
		    *errorCodePtr = ECONNABORTED;
		}
	    }

	    statePtr->flags |= TLS_TCL_HANDSHAKE_FAILED;
	    return(-1);

	case SSL_ERROR_SSL:
	    dprintf("Got permanent fatal SSL error, aborting immediately");
	    Tls_Error(statePtr, (char *)ERR_reason_error_string(ERR_get_error()));
	    statePtr->flags |= TLS_TCL_HANDSHAKE_FAILED;
	    *errorCodePtr = ECONNABORTED;
	    return(-1);

	case SSL_ERROR_WANT_CONNECT:
	case SSL_ERROR_WANT_ACCEPT:
	case SSL_ERROR_WANT_X509_LOOKUP:
	default:
	    dprintf("We got a confusing reply: %i", rc);
	    *errorCodePtr = Tcl_GetErrno();
	    dprintf("ERR(%d, %d) ", rc, *errorCodePtr);
	    return(-1);
    }

#if 0
    if (statePtr->flags & TLS_TCL_SERVER) {
	dprintf("This is an TLS server, checking the certificate for the peer");

	err = SSL_get_verify_result(statePtr->ssl);
	if (err != X509_V_OK) {
	    dprintf("Invalid certificate, returning in failure");

	    Tls_Error(statePtr, (char *)X509_verify_cert_error_string(err));
	    statePtr->flags |= TLS_TCL_HANDSHAKE_FAILED;
	    *errorCodePtr = ECONNABORTED;
	    return(-1);
	}
    }
#endif

    dprintf("Removing the \"TLS_TCL_INIT\" flag since we have completed the handshake");
    statePtr->flags &= ~TLS_TCL_INIT;

    dprintf("Returning in success");
    *errorCodePtr = 0;
    return(0);
}

/*
 *-------------------------------------------------------------------
 *
 * TlsInputProc --
 *
 *    This procedure is invoked by the generic IO level
 *       to read input from a SSL socket based channel.
 *
 * Results:
 *    The number of bytes read is returned or -1 on error. An output
 *    argument contains the POSIX error code on error, or zero if no
 *    error occurred.
 *
 * Side effects:
 *    Reads input from the input device of the channel.
 *
 *-------------------------------------------------------------------
 */
static int TlsInputProc(ClientData instanceData, char *buf, int bufSize, int *errorCodePtr) {
    unsigned long backingError;
    State *statePtr = (State *) instanceData;
    int bytesRead;
    int tlsConnect;
    int err;

    *errorCodePtr = 0;

    dprintf("BIO_read(%d)", bufSize);

    if (statePtr->flags & TLS_TCL_CALLBACK) {
	/* don't process any bytes while verify callback is running */
	dprintf("Callback is running, reading 0 bytes");
	return(0);
    }

    dprintf("Calling Tls_WaitForConnect");
    tlsConnect = Tls_WaitForConnect(statePtr, errorCodePtr, 0);
    if (tlsConnect < 0) {
	dprintf("Got an error waiting to connect (tlsConnect = %i, *errorCodePtr = %i)", tlsConnect, *errorCodePtr);

	bytesRead = -1;
	if (*errorCodePtr == ECONNRESET) {
	    dprintf("Got connection reset");
	    /* Soft EOF */
	    *errorCodePtr = 0;
	    bytesRead = 0;
	}
	return(bytesRead);
    }

    /*
     * We need to clear the SSL error stack now because we sometimes reach
     * this function with leftover errors in the stack.  If BIO_read
     * returns -1 and intends EAGAIN, there is a leftover error, it will be
     * misconstrued as an error, not EAGAIN.
     *
     * Alternatively, we may want to handle the <0 return codes from
     * BIO_read specially (as advised in the RSA docs).  TLS's lower level BIO
     * functions play with the retry flags though, and this seems to work
     * correctly.  Similar fix in TlsOutputProc. - hobbs
     */
    ERR_clear_error();
    bytesRead = BIO_read(statePtr->bio, buf, bufSize);
    dprintf("BIO_read -> %d", bytesRead);

    err = SSL_get_error(statePtr->ssl, bytesRead);

#if 0
    if (bytesRead <= 0) {
	if (BIO_should_retry(statePtr->bio)) {
	    dprintf("I/O failed, will retry based on EAGAIN");
	    *errorCodePtr = EAGAIN;
	}
    }
#endif

    switch (err) {
	case SSL_ERROR_NONE:
	    dprintBuffer(buf, bytesRead);
	    break;

	case SSL_ERROR_SSL:
	    dprintf("SSL negotiation error, indicating that the connection has been aborted");

	    Tls_Error(statePtr, TCLTLS_SSL_ERROR(statePtr->ssl, bytesRead));
	    *errorCodePtr = ECONNABORTED;
	    bytesRead = -1;
	    break;

	case SSL_ERROR_SYSCALL:
	    backingError = ERR_get_error();

	    if (backingError == 0 && bytesRead == 0) {
		dprintf("EOF reached")
		*errorCodePtr = 0;
		bytesRead = 0;
	    } else if (backingError == 0 && bytesRead == -1) {
		dprintf("I/O error occurred (errno = %lu)", (unsigned long) Tcl_GetErrno());
		*errorCodePtr = Tcl_GetErrno();
		bytesRead = -1;
	    } else {
		dprintf("I/O error occurred (backingError = %lu)", backingError);
		*errorCodePtr = backingError;
		bytesRead = -1;
	    }
	    break;

	case SSL_ERROR_ZERO_RETURN:
	    dprintf("Got SSL_ERROR_ZERO_RETURN, this means an EOF has been reached");
	    bytesRead = 0;
	    *errorCodePtr = 0;
	    break;

	case SSL_ERROR_WANT_READ:
	    dprintf("Got SSL_ERROR_WANT_READ, mapping this to EAGAIN");
	    bytesRead = -1;
	    *errorCodePtr = EAGAIN;
	    break;

	default:
	    dprintf("Unknown error (err = %i), mapping to EOF", err);
	    *errorCodePtr = 0;
	    bytesRead = 0;
	    break;
    }

    dprintf("Input(%d) -> %d [%d]", bufSize, bytesRead, *errorCodePtr);
    return(bytesRead);
}

/*
 *-------------------------------------------------------------------
 *
 * TlsOutputProc --
 *
 *    This procedure is invoked by the generic IO level
 *       to write output to a SSL socket based channel.
 *
 * Results:
 *    The number of bytes written is returned. An output argument is
 *    set to a POSIX error code if an error occurred, or zero.
 *
 * Side effects:
 *    Writes output on the output device of the channel.
 *
 *-------------------------------------------------------------------
 */
static int TlsOutputProc(ClientData instanceData, const char *buf, int toWrite, int *errorCodePtr) {
    unsigned long backingError;
    State *statePtr = (State *) instanceData;
    int written, err;
    int tlsConnect;

    *errorCodePtr = 0;

    dprintf("BIO_write(%p, %d)", (void *) statePtr, toWrite);
    dprintBuffer(buf, toWrite);

    if (statePtr->flags & TLS_TCL_CALLBACK) {
	dprintf("Don't process output while callbacks are running");
	written = -1;
	*errorCodePtr = EAGAIN;
	return(-1);
    }

    dprintf("Calling Tls_WaitForConnect");
    tlsConnect = Tls_WaitForConnect(statePtr, errorCodePtr, 1);
    if (tlsConnect < 0) {
	dprintf("Got an error waiting to connect (tlsConnect = %i, *errorCodePtr = %i)", tlsConnect, *errorCodePtr);

	written = -1;
	if (*errorCodePtr == ECONNRESET) {
	    dprintf("Got connection reset");
	    /* Soft EOF */
	    *errorCodePtr = 0;
	    written = 0;
	}
	return(written);
    }

    if (toWrite == 0) {
	dprintf("zero-write");
	err = BIO_flush(statePtr->bio);

	if (err <= 0) {
	    dprintf("Flushing failed");

	    *errorCodePtr = EIO;
	    written = 0;
	    return(-1);
	}

	written = 0;
	*errorCodePtr = 0;
	return(0);
    }

    /*
     * We need to clear the SSL error stack now because we sometimes reach
     * this function with leftover errors in the stack.  If BIO_write
     * returns -1 and intends EAGAIN, there is a leftover error, it will be
     * misconstrued as an error, not EAGAIN.
     *
     * Alternatively, we may want to handle the <0 return codes from
     * BIO_write specially (as advised in the RSA docs).  TLS's lower level
     * BIO functions play with the retry flags though, and this seems to
     * work correctly.  Similar fix in TlsInputProc. - hobbs
     */
    ERR_clear_error();
    written = BIO_write(statePtr->bio, buf, toWrite);
    dprintf("BIO_write(%p, %d) -> [%d]", (void *) statePtr, toWrite, written);

    err = SSL_get_error(statePtr->ssl, written);
    switch (err) {
	case SSL_ERROR_NONE:
	    if (written < 0) {
		written = 0;
	    }
	    break;

	case SSL_ERROR_WANT_WRITE:
	    dprintf("Got SSL_ERROR_WANT_WRITE, mapping it to EAGAIN");
	    *errorCodePtr = EAGAIN;
	    written = -1;
	    break;

	case SSL_ERROR_WANT_READ:
	    dprintf(" write R BLOCK");
	    break;

	case SSL_ERROR_WANT_X509_LOOKUP:
	    dprintf(" write X BLOCK");
	    break;

	case SSL_ERROR_ZERO_RETURN:
	    dprintf(" closed");
	    written = 0;
	    *errorCodePtr = 0;
	    break;

	case SSL_ERROR_SYSCALL:
	    backingError = ERR_get_error();

	    if (backingError == 0 && written == 0) {
		dprintf("EOF reached")
		*errorCodePtr = 0;
		written = 0;
	    } else if (backingError == 0 && written == -1) {
		dprintf("I/O error occurred (errno = %lu)", (unsigned long) Tcl_GetErrno());
		*errorCodePtr = Tcl_GetErrno();
		written = -1;
	    } else {
		dprintf("I/O error occurred (backingError = %lu)", backingError);
		*errorCodePtr = backingError;
		written = -1;
	    }
	    break;

	case SSL_ERROR_SSL:
	    Tls_Error(statePtr, TCLTLS_SSL_ERROR(statePtr->ssl, written));
	    *errorCodePtr = ECONNABORTED;
	    written = -1;
	    break;

	default:
	    dprintf(" unknown err: %d", err);
	    break;
    }

    dprintf("Output(%d) -> %d", toWrite, written);
    return(written);
}

/*
 *-------------------------------------------------------------------
 *
 * TlsSetOptionProc --
 *
 *    Computes an option value for a SSL socket based channel, or a
 *    list of all options and their values.
 *
 * Results:
 *    A standard Tcl result. The value of the specified option or a
 *    list of all options and    their values is returned in the
 *    supplied DString.
 *
 * Side effects:
 *    None.
 *
 *-------------------------------------------------------------------
 */
static int
TlsSetOptionProc(ClientData instanceData,    /* Socket state. */
    Tcl_Interp *interp,		/* For errors - can be NULL. */
    const char *optionName,	/* Name of the option to set the value for, or
				 * NULL to get all options and their values. */
    const char *optionValue)	/* Value for option. */
{
    State *statePtr = (State *) instanceData;

    Tcl_Channel downChan = Tls_GetParent(statePtr, TLS_TCL_FASTPATH);
    Tcl_DriverSetOptionProc *setOptionProc;

    setOptionProc = Tcl_ChannelSetOptionProc(Tcl_GetChannelType(downChan));
    if (setOptionProc != NULL) {
	return (*setOptionProc)(Tcl_GetChannelInstanceData(downChan), interp, optionName, optionValue);
    } else if (optionName == (char*) NULL) {
	/*
	 * Request is query for all options, this is ok.
	 */
	return TCL_OK;
    }
    /*
     * Request for a specific option has to fail, we don't have any.
     */
    return TCL_ERROR;
}

/*
 *-------------------------------------------------------------------
 *
 * TlsGetOptionProc --
 *
 *    Computes an option value for a SSL socket based channel, or a
 *    list of all options and their values.
 *
 * Results:
 *    A standard Tcl result. The value of the specified option or a
 *    list of all options and    their values is returned in the
 *    supplied DString.
 *
 * Side effects:
 *    None.
 *
 *-------------------------------------------------------------------
 */
static int
TlsGetOptionProc(ClientData instanceData,    /* Socket state. */
    Tcl_Interp *interp,		/* For errors - can be NULL. */
    const char *optionName,	/* Name of the option to retrieve the value for, or
				 * NULL to get all options and their values. */
    Tcl_DString *dsPtr)		/* Where to store the computed value initialized by caller. */
{
    State *statePtr = (State *) instanceData;

    Tcl_Channel downChan = Tls_GetParent(statePtr, TLS_TCL_FASTPATH);
    Tcl_DriverGetOptionProc *getOptionProc;

    getOptionProc = Tcl_ChannelGetOptionProc(Tcl_GetChannelType(downChan));
    if (getOptionProc != NULL) {
	return (*getOptionProc)(Tcl_GetChannelInstanceData(downChan), interp, optionName, dsPtr);
    } else if (optionName == (char*) NULL) {
	/*
	 * Request is query for all options, this is ok.
	 */
	return TCL_OK;
    }
    /*
     * Request for a specific option has to fail, we don't have any.
     */
    return TCL_ERROR;
}

/*
 *-------------------------------------------------------------------
 *
 * TlsWatchProc --
 *
 *    Initialize the notifier to watch Tcl_Files from this channel.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Sets up the notifier so that a future event on the channel
 *    will be seen by Tcl.
 *
 *-------------------------------------------------------------------
 */
static void
TlsWatchProc(ClientData instanceData,    /* The socket state. */
    int mask)		/* Events of interest; an OR-ed combination of
			* TCL_READABLE, TCL_WRITABLE and TCL_EXCEPTION. */
{
    Tcl_Channel     downChan;
    State *statePtr = (State *) instanceData;

    dprintf("TlsWatchProc(0x%x)", mask);

    /* Pretend to be dead as long as the verify callback is running.
     * Otherwise that callback could be invoked recursively. */
    if (statePtr->flags & TLS_TCL_CALLBACK) {
	dprintf("Callback is on-going, doing nothing");
	return;
    }

    dprintFlags(statePtr);

    downChan = Tls_GetParent(statePtr, TLS_TCL_FASTPATH);

    if (statePtr->flags & TLS_TCL_HANDSHAKE_FAILED) {
	dprintf("Asked to watch a socket with a failed handshake -- nothing can happen here");
	dprintf("Unregistering interest in the lower channel");

	(Tcl_GetChannelType(downChan))->watchProc(Tcl_GetChannelInstanceData(downChan), 0);
	statePtr->watchMask = 0;
	return;
    }

    statePtr->watchMask = mask;

    /* No channel handlers any more. We will be notified automatically
     * about events on the channel below via a call to our
     * 'TransformNotifyProc'. But we have to pass the interest down now.
     * We are allowed to add additional 'interest' to the mask if we want
     * to. But this transformation has no such interest. It just passes
     * the request down, unchanged.
     */
    dprintf("Registering our interest in the lower channel (chan=%p)", (void *) downChan);
    (Tcl_GetChannelType(downChan))->watchProc(Tcl_GetChannelInstanceData(downChan), mask);

    /*
     * Management of the internal timer.
     */
    if (statePtr->timer != (Tcl_TimerToken) NULL) {
	dprintf("A timer was found, deleting it");
	Tcl_DeleteTimerHandler(statePtr->timer);
	statePtr->timer = (Tcl_TimerToken) NULL;
    }

    if ((mask & TCL_READABLE) &&
	((Tcl_InputBuffered(statePtr->self) > 0) || (BIO_ctrl_pending(statePtr->bio) > 0))) {
	    /*
	     * There is interest in readable events and we actually have
	     * data waiting, so generate a timer to flush that.
	     */
	    dprintf("Creating a new timer since data appears to be waiting");
	    statePtr->timer = Tcl_CreateTimerHandler(TLS_TCL_DELAY, TlsChannelHandlerTimer, (ClientData) statePtr);
    }
}

/*
 *-------------------------------------------------------------------
 *
 * TlsGetHandleProc --
 *
 *    Called from Tcl_GetChannelFile to retrieve o/s file handler
 *    from the SSL socket based channel.
 *
 * Results:
 *    The appropriate Tcl_File or NULL if not present.
 *
 * Side effects:
 *    None.
 *
 *-------------------------------------------------------------------
 */
static int TlsGetHandleProc(ClientData instanceData, int direction, ClientData *handlePtr) {
    State *statePtr = (State *) instanceData;

    return(Tcl_GetChannelHandle(Tls_GetParent(statePtr, TLS_TCL_FASTPATH), direction, handlePtr));
}

/*
 *-------------------------------------------------------------------
 *
 * TlsNotifyProc --
 *
 *    Handler called by Tcl to inform us of activity
 *    on the underlying channel.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    May process the incoming event by itself.
 *
 *-------------------------------------------------------------------
 */
static int TlsNotifyProc(ClientData instanceData, int mask) {
    State *statePtr = (State *) instanceData;
    int errorCode;

    /*
     * An event occurred in the underlying channel.  This
     * transformation doesn't process such events thus returns the
     * incoming mask unchanged.
     */
    if (statePtr->timer != (Tcl_TimerToken) NULL) {
	/*
	 * Delete an existing timer. It was not fired, yet we are
	 * here, so the channel below generated such an event and we
	 * don't have to. The renewal of the interest after the
	 * execution of channel handlers will eventually cause us to
	 * recreate the timer (in WatchProc).
	 */
	Tcl_DeleteTimerHandler(statePtr->timer);
	statePtr->timer = (Tcl_TimerToken) NULL;
    }

    if (statePtr->flags & TLS_TCL_CALLBACK) {
	dprintf("Returning 0 due to callback");
	return 0;
    }

    dprintf("Calling Tls_WaitForConnect");
    errorCode = 0;
    if (Tls_WaitForConnect(statePtr, &errorCode, 1) < 0) {
	if (errorCode == EAGAIN) {
	    dprintf("Async flag could be set (didn't check) and errorCode == EAGAIN:  Returning 0");

	    return 0;
	}

	dprintf("Tls_WaitForConnect returned an error");
    }

    dprintf("Returning %i", mask);

    return(mask);
}

#if 0
/*
 *------------------------------------------------------*
 *
 *      TlsChannelHandler --
 *
 *      ------------------------------------------------*
 *      Handler called by Tcl as a result of
 *      Tcl_CreateChannelHandler - to inform us of activity
 *      on the underlying channel.
 *      ------------------------------------------------*
 *
 *      Sideeffects:
 *              May generate subsequent calls to
 *              Tcl_NotifyChannel.
 *
 *      Result:
 *              None.
 *
 *------------------------------------------------------*
 */
static void
TlsChannelHandler (ClientData clientData, int mask) {
    State *statePtr = (State *) clientData;

    dprintf("HANDLER(0x%x)", mask);
    Tcl_Preserve((ClientData)statePtr);

    if (mask & TCL_READABLE) {
	BIO_set_flags(statePtr->p_bio, BIO_FLAGS_READ);
    } else {
	BIO_clear_flags(statePtr->p_bio, BIO_FLAGS_READ);
    }

    if (mask & TCL_WRITABLE) {
	BIO_set_flags(statePtr->p_bio, BIO_FLAGS_WRITE);
    } else {
	BIO_clear_flags(statePtr->p_bio, BIO_FLAGS_WRITE);
    }

    mask = 0;
    if (BIO_wpending(statePtr->bio)) {
	mask |= TCL_WRITABLE;
    }
    if (BIO_pending(statePtr->bio)) {
	mask |= TCL_READABLE;
    }

    /*
     * The following NotifyChannel calls seems to be important, but
     * we don't know why.  It looks like if the mask is ever non-zero
     * that it will enter an infinite loop.
     *
     * Notify the upper channel of the current BIO state so the event
     * continues to propagate up the chain.
     *
     * stanton: It looks like this could result in an infinite loop if
     * the upper channel doesn't cause ChannelHandler to be removed
     * before Tcl_NotifyChannel calls channel handlers on the lower channel.
     */
    Tcl_NotifyChannel(statePtr->self, mask);

    if (statePtr->timer != (Tcl_TimerToken)NULL) {
	Tcl_DeleteTimerHandler(statePtr->timer);
	statePtr->timer = (Tcl_TimerToken)NULL;
    }
    if ((mask & TCL_READABLE) && Tcl_InputBuffered(statePtr->self) > 0) {
	/*
	 * Data is waiting, flush it out in short time
	 */
	statePtr->timer = Tcl_CreateTimerHandler(TLS_TCL_DELAY, TlsChannelHandlerTimer, (ClientData) statePtr);
    }
    Tcl_Release((ClientData)statePtr);
}
#endif

/*
 *------------------------------------------------------*
 *
 *    TlsChannelHandlerTimer --
 *
 *    ------------------------------------------------*
 *    Called by the notifier (-> timer) to flush out
 *    information waiting in channel buffers.
 *    ------------------------------------------------*
 *
 *    Sideeffects:
 *        As of 'TlsChannelHandler'.
 *
 *    Result:
 *        None.
 *
 *------------------------------------------------------*
 */
static void TlsChannelHandlerTimer(ClientData clientData) {
    State *statePtr = (State *) clientData;
    int mask = 0;

    dprintf("Called");

    statePtr->timer = (Tcl_TimerToken) NULL;

    if (BIO_wpending(statePtr->bio)) {
	dprintf("[chan=%p] BIO writable", statePtr->self);

	mask |= TCL_WRITABLE;
    }

    if (BIO_pending(statePtr->bio)) {
	dprintf("[chan=%p] BIO readable", statePtr->self);

	mask |= TCL_READABLE;
    }

    dprintf("Notifying ourselves");
    Tcl_NotifyChannel(statePtr->self, mask);

    dprintf("Returning");

    return;
}

Tcl_Channel Tls_GetParent(State *statePtr, int maskFlags) {
    dprintf("Requested to get parent of channel %p", statePtr->self);

    if ((statePtr->flags & ~maskFlags) & TLS_TCL_FASTPATH) {
	dprintf("Asked to get the parent channel while we are using FastPath -- returning NULL");
	return(NULL);
    }
    return(Tcl_GetStackedChannel(statePtr->self));
}

/*
 *-------------------------------------------------------------------
 *
 * Tls_ChannelType --
 *
 *    Return the correct TLS channel driver info
 *
 * Results:
 *    The correct channel driver for the current version of Tcl.
 *
 * Side effects:
 *    None.
 *
 *-------------------------------------------------------------------
 */
Tcl_ChannelType *Tls_ChannelType(void) {
    unsigned int size;

    /*
     * Initialize the channel type if necessary
     */
    if (tlsChannelType == NULL) {
	/*
	 * Allocate new channeltype structure
	 */
	size = sizeof(Tcl_ChannelType); /* Base size */

	tlsChannelType = (Tcl_ChannelType *) ckalloc(size);
	memset((void *) tlsChannelType, 0, size);

	tlsChannelType->typeName	= "tls";
#ifdef TCL_CHANNEL_VERSION_5
	tlsChannelType->version		= TCL_CHANNEL_VERSION_5;
	tlsChannelType->closeProc	= TlsCloseProc;
	tlsChannelType->inputProc	= TlsInputProc;
	tlsChannelType->outputProc	= TlsOutputProc;
	tlsChannelType->seekProc	= NULL;
	tlsChannelType->setOptionProc	= TlsSetOptionProc;
	tlsChannelType->getOptionProc	= TlsGetOptionProc;
	tlsChannelType->watchProc	= TlsWatchProc;
	tlsChannelType->getHandleProc	= TlsGetHandleProc;
	tlsChannelType->close2Proc	= TlsCloseProc2;
	tlsChannelType->blockModeProc	= TlsBlockModeProc;
	tlsChannelType->flushProc	= NULL;
	tlsChannelType->handlerProc	= TlsNotifyProc;
	tlsChannelType->wideSeekProc	= NULL;
	tlsChannelType->threadActionProc = NULL;
	tlsChannelType->truncateProc	= NULL;
#else
	tlsChannelType->version		= TCL_CHANNEL_VERSION_2;
	tlsChannelType->closeProc	= TlsCloseProc;
	tlsChannelType->inputProc	= TlsInputProc;
	tlsChannelType->outputProc	= TlsOutputProc;
	tlsChannelType->seekProc	= NULL;
	tlsChannelType->setOptionProc	= TlsSetOptionProc;
	tlsChannelType->getOptionProc	= TlsGetOptionProc;
	tlsChannelType->watchProc	= TlsWatchProc;
	tlsChannelType->getHandleProc	= TlsGetHandleProc;
	tlsChannelType->close2Proc	= NULL;
	tlsChannelType->blockModeProc	= TlsBlockModeProc;
	tlsChannelType->flushProc	= NULL;
	tlsChannelType->handlerProc	= TlsNotifyProc;
#endif
    }
    return(tlsChannelType);
}

Added generic/tlsInt.h version [9a55e93f5a].



















































































































































































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/*
 * Copyright (C) 1997-2000 Matt Newman <[email protected]>
 *
 * TLS (aka SSL) Channel - can be layered on any bi-directional
 * Tcl_Channel (Note: Requires Trf Core Patch)
 *
 * This was built from scratch based upon observation of OpenSSL 0.9.2B
 *
 * Addition credit is due for Andreas Kupries ([email protected]), for
 * providing the Tcl_ReplaceChannel mechanism and working closely with me
 * to enhance it to support full fileevent semantics.
 *
 * Also work done by the follow people provided the impetus to do this "right":-
 *	tclSSL (Colin McCormack, Shared Technology)
 *	SSLtcl (Peter Antman)
 *
 */
#ifndef _TLSINT_H
#define _TLSINT_H

#include "tls.h"
#include <errno.h>
#include <string.h>
#include <stdint.h>

#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <wincrypt.h> /* OpenSSL needs this on Windows */
#endif

/* Handle TCL 8.6 CONST changes */
#ifndef CONST86
#define CONST86
#endif

#ifdef NO_PATENTS
#  define NO_IDEA
#  define NO_RC2
#  define NO_RC4
#  define NO_RC5
#  define NO_RSA
#  ifndef NO_SSL2
#    define NO_SSL2
#  endif
#endif

#include <openssl/ssl.h>
#include <openssl/err.h>
#include <openssl/rand.h>
#include <openssl/opensslv.h>

/*
 * Determine if we should use the pre-OpenSSL 1.1.0 API
 */
#undef TCLTLS_OPENSSL_PRE_1_1
#if (defined(LIBRESSL_VERSION_NUMBER)) || OPENSSL_VERSION_NUMBER < 0x10100000L
#  define TCLTLS_OPENSSL_PRE_1_1_API 1
#endif

#ifndef ECONNABORTED
#define ECONNABORTED	130	/* Software caused connection abort */
#endif
#ifndef ECONNRESET
#define ECONNRESET	131	/* Connection reset by peer */
#endif

#ifdef TCLEXT_TCLTLS_DEBUG
#include <ctype.h>
#define dprintf(...) { \
	char dprintfBuffer[8192], *dprintfBuffer_p; \
	dprintfBuffer_p = &dprintfBuffer[0]; \
	dprintfBuffer_p += sprintf(dprintfBuffer_p, "%s:%i:%s():", __FILE__, __LINE__, __func__); \
	dprintfBuffer_p += sprintf(dprintfBuffer_p, __VA_ARGS__); \
	fprintf(stderr, "%s\n", dprintfBuffer); \
}
#define dprintBuffer(bufferName, bufferLength) { \
	int dprintBufferIdx; \
	unsigned char dprintBufferChar; \
	fprintf(stderr, "%s:%i:%s():%s[%llu]={", __FILE__, __LINE__, __func__, #bufferName, (unsigned long long) bufferLength); \
	for (dprintBufferIdx = 0; dprintBufferIdx < bufferLength; dprintBufferIdx++) { \
		dprintBufferChar = bufferName[dprintBufferIdx]; \
		if (isalpha(dprintBufferChar) || isdigit(dprintBufferChar)) { \
			fprintf(stderr, "'%c' ", dprintBufferChar); \
		} else { \
			fprintf(stderr, "%02x ", (unsigned int) dprintBufferChar); \
		}; \
	}; \
	fprintf(stderr, "}\n"); \
}
#define dprintFlags(statePtr) { \
	char dprintfBuffer[8192], *dprintfBuffer_p; \
	dprintfBuffer_p = &dprintfBuffer[0]; \
	dprintfBuffer_p += sprintf(dprintfBuffer_p, "%s:%i:%s():%s->flags=0", __FILE__, __LINE__, __func__, #statePtr); \
	if (((statePtr)->flags & TLS_TCL_ASYNC) == TLS_TCL_ASYNC) { dprintfBuffer_p += sprintf(dprintfBuffer_p, "|TLS_TCL_ASYNC"); }; \
	if (((statePtr)->flags & TLS_TCL_SERVER) == TLS_TCL_SERVER) { dprintfBuffer_p += sprintf(dprintfBuffer_p, "|TLS_TCL_SERVER"); }; \
	if (((statePtr)->flags & TLS_TCL_INIT) == TLS_TCL_INIT) { dprintfBuffer_p += sprintf(dprintfBuffer_p, "|TLS_TCL_INIT"); }; \
	if (((statePtr)->flags & TLS_TCL_DEBUG) == TLS_TCL_DEBUG) { dprintfBuffer_p += sprintf(dprintfBuffer_p, "|TLS_TCL_DEBUG"); }; \
	if (((statePtr)->flags & TLS_TCL_CALLBACK) == TLS_TCL_CALLBACK) { dprintfBuffer_p += sprintf(dprintfBuffer_p, "|TLS_TCL_CALLBACK"); }; \
	if (((statePtr)->flags & TLS_TCL_HANDSHAKE_FAILED) == TLS_TCL_HANDSHAKE_FAILED) { dprintfBuffer_p += sprintf(dprintfBuffer_p, "|TLS_TCL_HANDSHAKE_FAILED"); }; \
	if (((statePtr)->flags & TLS_TCL_FASTPATH) == TLS_TCL_FASTPATH) { dprintfBuffer_p += sprintf(dprintfBuffer_p, "|TLS_TCL_FASTPATH"); }; \
	fprintf(stderr, "%s\n", dprintfBuffer); \
}
#else
#define dprintf(...) if (0) { fprintf(stderr, __VA_ARGS__); }
#define dprintBuffer(bufferName, bufferLength) /**/
#define dprintFlags(statePtr) /**/
#endif

#define TCLTLS_SSL_ERROR(ssl,err) ((char*)ERR_reason_error_string((unsigned long)SSL_get_error((ssl),(err))))
/*
 * OpenSSL BIO Routines
 */
#define BIO_TYPE_TCL	(19|0x0400)

/*
 * Defines for State.flags
 */
#define TLS_TCL_ASYNC		(1<<0)	/* non-blocking mode */
#define TLS_TCL_SERVER		(1<<1)	/* Server-Side */
#define TLS_TCL_INIT		(1<<2)	/* Initializing connection */
#define TLS_TCL_DEBUG		(1<<3)	/* Show debug tracing */
#define TLS_TCL_CALLBACK	(1<<4)	/* In a callback, prevent update
					 * looping problem. [Bug 1652380] */
#define TLS_TCL_HANDSHAKE_FAILED (1<<5) /* Set on handshake failures and once set, all
                                         * further I/O will result in ECONNABORTED errors. */
#define TLS_TCL_FASTPATH 	(1<<6)	/* The parent channel is being used directly by the SSL library */
#define TLS_TCL_DELAY (5)

/*
 * This structure describes the per-instance state of an SSL channel.
 *
 * The SSL processing context is maintained here, in the ClientData
 */
typedef struct State {
	Tcl_Channel self;       /* this socket channel */
	Tcl_TimerToken timer;

	int flags;              /* see State.flags above  */
	int watchMask;          /* current WatchProc mask */
	int mode;               /* current mode of parent channel */

	Tcl_Interp *interp;     /* interpreter in which this resides */
	Tcl_Obj *callback;      /* script called for tracing, verifying and errors */
	Tcl_Obj *password;      /* script called for certificate password */

	int vflags;             /* verify flags */
	SSL *ssl;               /* Struct for SSL processing */
	SSL_CTX *ctx;           /* SSL Context */
	BIO *bio;               /* Struct for SSL processing */
	BIO *p_bio;             /* Parent BIO (that is layered on Tcl_Channel) */

	char *err;
} State;

#ifdef USE_TCL_STUBS
#ifndef Tcl_StackChannel
#error "Unable to compile on this version of Tcl"
#endif /* Tcl_GetStackedChannel */
#endif /* USE_TCL_STUBS */

/*
 * Forward declarations
 */
Tcl_ChannelType *Tls_ChannelType(void);
Tcl_Channel     Tls_GetParent(State *statePtr, int maskFlags);

Tcl_Obj         *Tls_NewX509Obj(Tcl_Interp *interp, X509 *cert);
void            Tls_Error(State *statePtr, char *msg);
void            Tls_Free(char *blockPtr);
void            Tls_Clean(State *statePtr);
int             Tls_WaitForConnect(State *statePtr, int *errorCodePtr, int handshakeFailureIsPermanent);

BIO             *BIO_new_tcl(State* statePtr, int flags);

#define PTR2INT(x) ((int) ((intptr_t) (x)))

#endif /* _TLSINT_H */

Added generic/tlsX509.c version [d4377f05cd].






















































































































































































































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/*
 * Copyright (C) 1997-2000 Sensus Consulting Ltd.
 * Matt Newman <[email protected]>
 */
#include <tcl.h>
#include <stdio.h>
#include <openssl/bio.h>
#include <openssl/sha.h>
#include <openssl/x509.h>
#include <openssl/asn1.h>
#include "tlsInt.h"

/*
 *  Ensure these are not macros - known to be defined on Win32
 */
#ifdef min
#undef min
#endif

#ifdef max
#undef max
#endif

static int min(int a, int b)
{
    return (a < b) ? a : b;
}

static int max(int a, int b)
{
    return (a > b) ? a : b;
}

/*
 * ASN1_UTCTIME_tostr --
 */
static char *
ASN1_UTCTIME_tostr(ASN1_UTCTIME *tm)
{
    static char bp[128];
    char *v;
    int gmt=0;
    static char *mon[12]={
        "Jan","Feb","Mar","Apr","May","Jun", "Jul","Aug","Sep","Oct","Nov","Dec"};
    int i;
    int y=0,M=0,d=0,h=0,m=0,s=0;

    i=tm->length;
    v=(char *)tm->data;

    if (i < 10) goto err;
    if (v[i-1] == 'Z') gmt=1;
    for (i=0; i<10; i++)
        if ((v[i] > '9') || (v[i] < '0')) goto err;
    y= (v[0]-'0')*10+(v[1]-'0');
    if (y < 70) y+=100;
    M= (v[2]-'0')*10+(v[3]-'0');
    if ((M > 12) || (M < 1)) goto err;
    d= (v[4]-'0')*10+(v[5]-'0');
    h= (v[6]-'0')*10+(v[7]-'0');
    m=  (v[8]-'0')*10+(v[9]-'0');
    if ((v[10] >= '0') && (v[10] <= '9') && (v[11] >= '0') && (v[11] <= '9'))
        s=  (v[10]-'0')*10+(v[11]-'0');

    sprintf(bp,"%s %2d %02d:%02d:%02d %d%s", mon[M-1],d,h,m,s,y+1900,(gmt)?" GMT":"");
    return bp;
 err:
    return "Bad time value";
}

/*
 *------------------------------------------------------*
 *
 *	Tls_NewX509Obj --
 *
 *	------------------------------------------------*
 *	Converts a X509 certificate into a Tcl_Obj
 *	------------------------------------------------*
 *
 *	Sideeffects:
 *		None
 *
 *	Result:
 *		A Tcl List Object representing the provided
 *		X509 certificate.
 *
 *------------------------------------------------------*
 */

#define CERT_STR_SIZE 16384

Tcl_Obj*
Tls_NewX509Obj(Tcl_Interp *interp, X509 *cert) {
    Tcl_Obj *certPtr = Tcl_NewListObj(0, NULL);
    BIO *bio;
    int n;
    unsigned long flags;
    char subject[BUFSIZ];
    char issuer[BUFSIZ];
    char serial[BUFSIZ];
    char notBefore[BUFSIZ];
    char notAfter[BUFSIZ];
    char certStr[CERT_STR_SIZE], *certStr_p;
    int certStr_len, toRead;
#ifndef NO_SSL_SHA
    char sha1_hash_ascii[SHA_DIGEST_LENGTH * 2 + 1];
    unsigned char sha1_hash_binary[SHA_DIGEST_LENGTH];
    char sha256_hash_ascii[SHA256_DIGEST_LENGTH * 2 + 1];
    unsigned char sha256_hash_binary[SHA256_DIGEST_LENGTH];
    const char *shachars="0123456789ABCDEF";

    sha1_hash_ascii[SHA_DIGEST_LENGTH * 2] = '\0';
    sha256_hash_ascii[SHA256_DIGEST_LENGTH * 2] = '\0';
#endif

    certStr[0] = 0;
    if ((bio = BIO_new(BIO_s_mem())) == NULL) {
	subject[0] = 0;
	issuer[0]  = 0;
	serial[0]  = 0;
    } else {
	flags = XN_FLAG_RFC2253 | ASN1_STRFLGS_UTF8_CONVERT;
	flags &= ~ASN1_STRFLGS_ESC_MSB;

	X509_NAME_print_ex(bio, X509_get_subject_name(cert), 0, flags);
	n = BIO_read(bio, subject, min(BIO_pending(bio), BUFSIZ - 1));
	n = max(n, 0);
	subject[n] = 0;
	(void)BIO_flush(bio);

	X509_NAME_print_ex(bio, X509_get_issuer_name(cert), 0, flags);
	n = BIO_read(bio, issuer, min(BIO_pending(bio), BUFSIZ - 1));
	n = max(n, 0);
	issuer[n] = 0;
	(void)BIO_flush(bio);

	i2a_ASN1_INTEGER(bio, X509_get_serialNumber(cert));
	n = BIO_read(bio, serial, min(BIO_pending(bio), BUFSIZ - 1));
	n = max(n, 0);
	serial[n] = 0;
	(void)BIO_flush(bio);

        if (PEM_write_bio_X509(bio, cert)) {
            certStr_p = certStr;
            certStr_len = 0;
            while (1) {
                toRead = min(BIO_pending(bio), CERT_STR_SIZE - certStr_len - 1);
                toRead = min(toRead, BUFSIZ);
                if (toRead == 0) {
                    break;
                }
                dprintf("Reading %i bytes from the certificate...", toRead);
                n = BIO_read(bio, certStr_p, toRead);
                if (n <= 0) {
                    break;
                }
                certStr_len += n;
                certStr_p   += n;
            }
            *certStr_p = '\0';
            (void)BIO_flush(bio);
        }

	BIO_free(bio);
    }

#if OPENSSL_VERSION_NUMBER < 0x10100000L
    strcpy(notBefore, ASN1_UTCTIME_tostr(X509_get_notBefore(cert)));
    strcpy(notAfter, ASN1_UTCTIME_tostr(X509_get_notAfter(cert)));
#else
    strcpy(notBefore, ASN1_UTCTIME_tostr(X509_getm_notBefore(cert)));
    strcpy(notAfter, ASN1_UTCTIME_tostr(X509_getm_notAfter(cert)));
#endif

#ifndef NO_SSL_SHA
    /* SHA1 */
    X509_digest(cert, EVP_sha1(), sha1_hash_binary, NULL);
    for (int n = 0; n < SHA_DIGEST_LENGTH; n++) {
        sha1_hash_ascii[n*2]   = shachars[(sha1_hash_binary[n] & 0xF0) >> 4];
        sha1_hash_ascii[n*2+1] = shachars[(sha1_hash_binary[n] & 0x0F)];
    }
    Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj("sha1_hash", -1) );
    Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj(sha1_hash_ascii, SHA_DIGEST_LENGTH * 2) );

    /* SHA256 */
    X509_digest(cert, EVP_sha256(), sha256_hash_binary, NULL);
    for (int n = 0; n < SHA256_DIGEST_LENGTH; n++) {
	sha256_hash_ascii[n*2]   = shachars[(sha256_hash_binary[n] & 0xF0) >> 4];
	sha256_hash_ascii[n*2+1] = shachars[(sha256_hash_binary[n] & 0x0F)];
    }
    Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( "sha256_hash", -1) );
    Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( sha256_hash_ascii, SHA256_DIGEST_LENGTH * 2) );
#endif
    Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( "subject", -1) );
    Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( subject, -1) );

    Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( "issuer", -1) );
    Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( issuer, -1) );

    Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( "notBefore", -1) );
    Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( notBefore, -1) );

    Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( "notAfter", -1) );
    Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( notAfter, -1) );

    Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( "serial", -1) );
    Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( serial, -1) );

    Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( "certificate", -1) );
    Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( certStr, -1) );

    return certPtr;
}

Added library/tls.tcl version [3524eca483].
















































































































































































































































































































































































































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#
# Copyright (C) 1997-2000 Matt Newman <[email protected]>
#
namespace eval tls {
    variable logcmd tclLog
    variable debug 0

    # Default flags passed to tls::import
    variable defaults {}

    # Maps UID to Server Socket
    variable srvmap
    variable srvuid 0

    # Over-ride this if you are using a different socket command
    variable socketCmd
    if {![info exists socketCmd]} {
        set socketCmd [info command ::socket]
    }

    # This is the possible arguments to tls::socket and tls::init
    # The format of this is a list of lists
    ## Each inner list contains the following elements
    ### Server (matched against "string match" for 0/1)
    ### Option name
    ### Variable to add the option to:
    #### sopts: [socket] option
    #### iopts: [tls::import] option
    ### How many arguments the following the option to consume
    variable socketOptionRules {
        {0 -async sopts 0}
        {* -myaddr sopts 1}
        {0 -myport sopts 1}
        {* -type sopts 1}
        {* -cadir iopts 1}
        {* -cafile iopts 1}
        {* -cert iopts 1}
        {* -certfile iopts 1}
        {* -cipher iopts 1}
        {* -command iopts 1}
        {* -dhparams iopts 1}
        {* -key iopts 1}
        {* -keyfile iopts 1}
        {* -password iopts 1}
        {* -request iopts 1}
        {* -require iopts 1}
        {* -autoservername discardOpts 1}
        {* -servername iopts 1}
        {* -alpn iopts 1}
        {* -ssl2 iopts 1}
        {* -ssl3 iopts 1}
        {* -tls1 iopts 1}
        {* -tls1.1 iopts 1}
        {* -tls1.2 iopts 1}
        {* -tls1.3 iopts 1}
    }

    # tls::socket and tls::init options as a humane readable string
    variable socketOptionsNoServer
    variable socketOptionsServer

    # Internal [switch] body to validate options
    variable socketOptionsSwitchBody
}

proc tls::_initsocketoptions {} {
    variable socketOptionRules
    variable socketOptionsNoServer
    variable socketOptionsServer
    variable socketOptionsSwitchBody

    # Do not re-run if we have already been initialized
    if {[info exists socketOptionsSwitchBody]} {
        return
    }

    # Create several structures from our list of options
    ## 1. options: a text representation of the valid options for the current
    ##             server type
    ## 2. argSwitchBody: Switch body for processing arguments
    set options(0) [list]
    set options(1) [list]
    set argSwitchBody [list]
    foreach optionRule $socketOptionRules {
        set ruleServer [lindex $optionRule 0]
        set ruleOption [lindex $optionRule 1]
        set ruleVarToUpdate [lindex $optionRule 2]
        set ruleVarArgsToConsume [lindex $optionRule 3]

        foreach server [list 0 1] {
            if {![string match $ruleServer $server]} {
                continue
            }

            lappend options($server) $ruleOption
        }

        switch -- $ruleVarArgsToConsume {
            0 {
                set argToExecute {
                    lappend @VAR@ $arg
                    set argsArray($arg) true
                }
            }
            1 {
                set argToExecute {
                    incr idx
                    if {$idx >= [llength $args]} {
                        return -code error "\"$arg\" option must be followed by value"
                    }
                    set argValue [lindex $args $idx]
                    lappend @VAR@ $arg $argValue
                    set argsArray($arg) $argValue
                }
            }
            default {
                return -code error "Internal argument construction error"
            }
        }

        lappend argSwitchBody $ruleServer,$ruleOption [string map [list @VAR@ $ruleVarToUpdate] $argToExecute]
    }

    # Add in the final options
    lappend argSwitchBody {*,-*} {return -code error "bad option \"$arg\": must be one of $options"}
    lappend argSwitchBody default break

    # Set the final variables
    set socketOptionsNoServer   [join $options(0) {, }]
    set socketOptionsServer     [join $options(1) {, }]
    set socketOptionsSwitchBody $argSwitchBody
}

proc tls::initlib {dir dll} {
    # Package index cd's into the package directory for loading.
    # Irrelevant to unixoids, but for Windows this enables the OS to find
    # the dependent DLL's in the CWD, where they may be.
    set cwd [pwd]
    catch {cd $dir}
    if {[string equal $::tcl_platform(platform) "windows"] &&
	![string equal [lindex [file system $dir] 0] "native"]} {
	# If it is a wrapped executable running on windows, the openssl
	# dlls must be copied out of the virtual filesystem to the disk
	# where Windows will find them when resolving the dependency in
	# the tls dll. We choose to make them siblings of the executable.
	package require starkit
	set dst [file nativename [file dirname $starkit::topdir]]
	foreach sdll [glob -nocomplain -directory $dir -tails libssl32.dll libcrypto*.dll libssl*.dll libssp*.dll] {
	    catch {file delete -force            $dst/$sdll}
	    catch {file copy   -force $dir/$sdll $dst/$sdll}
	}
    }
    set res [catch {uplevel #0 [list load [file join [pwd] $dll]]} err]
    catch {cd $cwd}
    if {$res} {
	namespace eval [namespace parent] {namespace delete tls}
	return -code $res $err
    }
    rename tls::initlib {}
}


#
# Backwards compatibility, also used to set the default
# context options
#
proc tls::init {args} {
    variable defaults
    variable socketOptionsNoServer
    variable socketOptionsServer
    variable socketOptionsSwitchBody

    tls::_initsocketoptions

    # Technically a third option should be used here: Options that are valid
    # only a both servers and non-servers
    set server -1
    set options $socketOptionsServer

    # Validate arguments passed
    set initialArgs $args
    set argc [llength $args]

    array set argsArray [list]
    for {set idx 0} {$idx < $argc} {incr idx} {
	set arg [lindex $args $idx]
	switch -glob -- $server,$arg $socketOptionsSwitchBody
    }

    set defaults $initialArgs
}
#
# Helper function - behaves exactly as the native socket command.
#
proc tls::socket {args} {
    variable socketCmd
    variable defaults
    variable socketOptionsNoServer
    variable socketOptionsServer
    variable socketOptionsSwitchBody

    tls::_initsocketoptions

    set idx [lsearch $args -server]
    if {$idx != -1} {
	set server 1
	set callback [lindex $args [expr {$idx+1}]]
	set args [lreplace $args $idx [expr {$idx+1}]]

	set usage "wrong # args: should be \"tls::socket -server command ?options? port\""
        set options $socketOptionsServer
    } else {
	set server 0

	set usage "wrong # args: should be \"tls::socket ?options? host port\""
        set options $socketOptionsNoServer
    }

    # Combine defaults with current options
    set args [concat $defaults $args]

    set argc [llength $args]
    set sopts {}
    set iopts [list -server $server]

    array set argsArray [list]
    for {set idx 0} {$idx < $argc} {incr idx} {
	set arg [lindex $args $idx]
	switch -glob -- $server,$arg $socketOptionsSwitchBody
    }

    if {$server} {
	if {($idx + 1) != $argc} {
	    return -code error $usage
	}
	set uid [incr ::tls::srvuid]

	set port [lindex $args [expr {$argc-1}]]
	lappend sopts $port
	#set sopts [linsert $sopts 0 -server $callback]
	set sopts [linsert $sopts 0 -server [list tls::_accept $iopts $callback]]
	#set sopts [linsert $sopts 0 -server [list tls::_accept $uid $callback]]
    } else {
	if {($idx + 2) != $argc} {
	    return -code error $usage
	}

	set host [lindex $args [expr {$argc-2}]]
	set port [lindex $args [expr {$argc-1}]]

        # If an "-autoservername" option is found, honor it
        if {[info exists argsArray(-autoservername)] && $argsArray(-autoservername)} {
            if {![info exists argsArray(-servername)]} {
                set argsArray(-servername) $host
                lappend iopts -servername $host
            }
        }

	lappend sopts $host $port
    }
    #
    # Create TCP/IP socket
    #
    set chan [eval $socketCmd $sopts]
    if {!$server && [catch {
	#
	# Push SSL layer onto socket
	#
	eval [list tls::import] $chan $iopts
    } err]} {
	set info ${::errorInfo}
	catch {close $chan}
	return -code error -errorinfo $info $err
    }
    return $chan
}

# tls::_accept --
#
#   This is the actual accept that TLS sockets use, which then calls
#   the callback registered by tls::socket.
#
# Arguments:
#   iopts	tls::import opts
#   callback	server callback to invoke
#   chan	socket channel to accept/deny
#   ipaddr	calling IP address
#   port	calling port
#
# Results:
#   Returns an error if the callback throws one.
#
proc tls::_accept { iopts callback chan ipaddr port } {
    log 2 [list tls::_accept $iopts $callback $chan $ipaddr $port]

    set chan [eval [list tls::import $chan] $iopts]

    lappend callback $chan $ipaddr $port
    if {[catch {
	uplevel #0 $callback
    } err]} {
	log 1 "tls::_accept error: ${::errorInfo}"
	close $chan
	error $err $::errorInfo $::errorCode
    } else {
	log 2 "tls::_accept - called \"$callback\" succeeded"
    }
}
#
# Sample callback for hooking: -
#
# error
# verify
# info
#
proc tls::callback {option args} {
    variable debug

    #log 2 [concat $option $args]

    switch -- $option {
	"error"	{
	    foreach {chan msg} $args break

	    log 0 "TLS/$chan: error: $msg"
	}
	"verify"	{
	    # poor man's lassign
	    foreach {chan depth cert rc err} $args break

	    array set c $cert

	    if {$rc != "1"} {
		log 1 "TLS/$chan: verify/$depth: Bad Cert: $err (rc = $rc)"
	    } else {
		log 2 "TLS/$chan: verify/$depth: $c(subject)"
	    }
	    if {$debug > 0} {
		return 1;	# FORCE OK
	    } else {
		return $rc
	    }
	}
	"info"	{
	    # poor man's lassign
	    foreach {chan major minor state msg} $args break

	    if {$msg != ""} {
		append state ": $msg"
	    }
	    # For tracing
	    upvar #0 tls::$chan cb
	    set cb($major) $minor

	    log 2 "TLS/$chan: $major/$minor: $state"
	}
	default	{
	    return -code error "bad option \"$option\":\
		    must be one of error, info, or verify"
	}
    }
}

proc tls::xhandshake {chan} {
    upvar #0 tls::$chan cb

    if {[info exists cb(handshake)] && \
	$cb(handshake) == "done"} {
	return 1
    }
    while {1} {
	vwait tls::${chan}(handshake)
	if {![info exists cb(handshake)]} {
	    return 0
	}
	if {$cb(handshake) == "done"} {
	    return 1
	}
    }
}

proc tls::password {} {
    log 0 "TLS/Password: did you forget to set your passwd!"
    # Return the worlds best kept secret password.
    return "secret"
}

proc tls::log {level msg} {
    variable debug
    variable logcmd

    if {$level > $debug || $logcmd == ""} {
	return
    }
    set cmd $logcmd
    lappend cmd $msg
    uplevel #0 $cmd
}

Modified pkgIndex.tcl.in from [13eb9e8d80] to [b9260959e6].




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-
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# -*- tcl -*-
# Tcl package index file, version 1.1
#
if {[package vsatisfies [package present Tcl] 8.5-]} {
	package ifneeded tls @PACKAGE_VERSION@ [list apply {{dir} {
if {[package vsatisfies [package provide Tcl] 9.0-]} {
    package ifneeded @PACKAGE_NAME@ @PACKAGE_VERSION@ \
		if {{@TCLEXT_BUILD@} eq "static"} {
			load {} Tls
		} else {
			load [file join $dir @EXTENSION_TARGET@] Tls
		}

		set tlsTclInitScript [file join $dir tls.tcl]
		if {[file exists $tlsTclInitScript]} {
			source $tlsTclInitScript
		}
	}} $dir]
	    [list load [file join $dir @PKG_LIB_FILE9@] [string totitle @PACKAGE_NAME@]]
    set initScript [file join $dir @[email protected]]
    if {[file exists $initScript]} {
	source $initScript
    }
} else {
    if {![package vsatisfies [package provide Tcl] 8.5]} {return}
    package ifneeded @PACKAGE_NAME@ @PACKAGE_VERSION@ [list apply {{dir} {
	if {[string tolower [file extension @PKG_LIB_FILE8@]] in [list ".dll" ".so"]} {
	    load [file join $dir @PKG_LIB_FILE8@] [string totitle @PACKAGE_NAME@]
	} else {
	    load {} [string totitle @PACKAGE_NAME@]
	}
	set initScript [file join $dir @PACKAGE_NAME@.tcl]
	if {[file exists $initScript]} {
	    source $initScript
	}
    }} $dir]
} elseif {[package vsatisfies [package present Tcl] 8.4]} {
	package ifneeded tls @PACKAGE_VERSION@ [list load [file join $dir @EXTENSION_TARGET@] Tls]
}

Deleted tclOpts.h version [b51276a00c].

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/*
 *  Copyright (C) 1997-2000 Matt Newman <[email protected]>
 *
 * Stylized option processing - requires consistent
 * external vars: opt, idx, objc, objv
 */
#ifndef _TCL_OPTS_H
#define _TCL_OPTS_H

#define OPT_PROLOG(option)			\
    if (strcmp(opt, (option)) == 0) {		\
	if (++idx >= objc) {			\
	    Tcl_AppendResult(interp,		\
		"no argument given for ",	\
		(option), " option",		\
		(char *) NULL);			\
	    return TCL_ERROR;			\
	}
#define OPT_POSTLOG()				\
	continue;				\
    }
#define OPTOBJ(option, var)			\
    OPT_PROLOG(option)				\
    var = objv[idx];				\
    OPT_POSTLOG()

#define OPTSTR(option, var)			\
    OPT_PROLOG(option)				\
    var = Tcl_GetStringFromObj(objv[idx], NULL);\
    OPT_POSTLOG()

#define OPTINT(option, var)			\
    OPT_PROLOG(option)				\
    if (Tcl_GetIntFromObj(interp, objv[idx],	\
	    &(var)) != TCL_OK) {		\
	    return TCL_ERROR;			\
    }						\
    OPT_POSTLOG()

#define OPTBOOL(option, var)			\
    OPT_PROLOG(option)				\
    if (Tcl_GetBooleanFromObj(interp, objv[idx],\
	    &(var)) != TCL_OK) {		\
	    return TCL_ERROR;			\
    }						\
    OPT_POSTLOG()

#define OPTBYTE(option, var, lvar)			\
    OPT_PROLOG(option)				\
    var = Tcl_GetByteArrayFromObj(objv[idx], &(lvar));\
    OPT_POSTLOG()

#define OPTBAD(type, list)			\
    Tcl_AppendResult(interp, "bad ", (type),	\
		" \"", opt, "\": must be ",	\
		(list), (char *) NULL)

#endif /* _TCL_OPTS_H */

Added tclconfig/README.txt version [22e2b83057].



























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These files comprise the basic building blocks for a Tcl Extension
Architecture (TEA) extension.  For more information on TEA see:

	http://www.tcl.tk/doc/tea/

This package is part of the Tcl project at SourceForge, but sources
and bug/patch database are hosted on fossil here:

	https://core.tcl-lang.org/tclconfig

This package is a freely available open source package.  You can do
virtually anything you like with it, such as modifying it, redistributing
it, and selling it either in whole or in part.

CONTENTS
========
The following is a short description of the files you will find in
the sample extension.

README.txt	This file

install-sh	Program used for copying binaries and script files
		to their install locations.

tcl.m4		Collection of Tcl autoconf macros.  Included by a package's
		aclocal.m4 to define TEA_* macros.

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#!/bin/sh
# install - install a program, script, or datafile

scriptversion=2020-07-26.22; # UTC

# This originates from X11R5 (mit/util/scripts/install.sh), which was
# later released in X11R6 (xc/config/util/install.sh) with the
# following copyright and license.
#
# Copyright (C) 1994 X Consortium
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# Except as contained in this notice, the name of the X Consortium shall not
# be used in advertising or otherwise to promote the sale, use or other deal-
# ings in this Software without prior written authorization from the X Consor-
# tium.
#
#
# FSF changes to this file are in the public domain.
#
# Calling this script install-sh is preferred over install.sh, to prevent
# 'make' implicit rules from creating a file called install from it
# when there is no Makefile.
#
# This script is compatible with the BSD install script, but was written
# from scratch.

tab='	'
nl='
'
IFS=" $tab$nl"

# Set DOITPROG to "echo" to test this script.

doit=${DOITPROG-}
doit_exec=${doit:-exec}

# Put in absolute file names if you don't have them in your path;
# or use environment vars.

chgrpprog=${CHGRPPROG-chgrp}
chmodprog=${CHMODPROG-chmod}
chownprog=${CHOWNPROG-chown}
cmpprog=${CMPPROG-cmp}
cpprog=${CPPROG-cp}
mkdirprog=${MKDIRPROG-mkdir}
mvprog=${MVPROG-mv}
rmprog=${RMPROG-rm}
stripprog=${STRIPPROG-strip}

posix_mkdir=

# Desired mode of installed file.
mode=0755

# Create dirs (including intermediate dirs) using mode 755.
# This is like GNU 'install' as of coreutils 8.32 (2020).
mkdir_umask=22

chgrpcmd=
chmodcmd=$chmodprog
chowncmd=
mvcmd=$mvprog
rmcmd="$rmprog -f"
stripcmd=

src=
dst=
dir_arg=
dst_arg=

copy_on_change=false
is_target_a_directory=possibly

usage="\
Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
   or: $0 [OPTION]... SRCFILES... DIRECTORY
   or: $0 [OPTION]... -t DIRECTORY SRCFILES...
   or: $0 [OPTION]... -d DIRECTORIES...

In the 1st form, copy SRCFILE to DSTFILE.
In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
In the 4th, create DIRECTORIES.

Options:
     --help     display this help and exit.
     --version  display version info and exit.

  -c            (ignored)
  -C            install only if different (preserve the last data modification time)
  -d            create directories instead of installing files.
  -g GROUP      $chgrpprog installed files to GROUP.
  -m MODE       $chmodprog installed files to MODE.
  -o USER       $chownprog installed files to USER.
  -s            $stripprog installed files.
  -S OPTION     $stripprog installed files using OPTION.
  -t DIRECTORY  install into DIRECTORY.
  -T            report an error if DSTFILE is a directory.

Environment variables override the default commands:
  CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
  RMPROG STRIPPROG
"

while test $# -ne 0; do
  case $1 in
    -c) ;;

    -C) copy_on_change=true;;

    -d) dir_arg=true;;

    -g) chgrpcmd="$chgrpprog $2"
        shift;;

    --help) echo "$usage"; exit $?;;

    -m) mode=$2
        case $mode in
          *' '* | *"$tab"* | *"$nl"* | *'*'* | *'?'* | *'['*)
            echo "$0: invalid mode: $mode" >&2
            exit 1;;
        esac
        shift;;

    -o) chowncmd="$chownprog $2"
        shift;;

    -s) stripcmd=$stripprog;;

    -S) stripcmd="$stripprog $2"
        shift;;

    -t)
        is_target_a_directory=always
        dst_arg=$2
        # Protect names problematic for 'test' and other utilities.
        case $dst_arg in
          -* | [=\(\)!]) dst_arg=./$dst_arg;;
        esac
        shift;;

    -T) is_target_a_directory=never;;

    --version) echo "$0 $scriptversion"; exit $?;;

    --) shift
        break;;

    -*) echo "$0: invalid option: $1" >&2
        exit 1;;

    *)  break;;
  esac
  shift
done

# We allow the use of options -d and -T together, by making -d
# take the precedence; this is for compatibility with GNU install.

if test -n "$dir_arg"; then
  if test -n "$dst_arg"; then
    echo "$0: target directory not allowed when installing a directory." >&2
    exit 1
  fi
fi

if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
  # When -d is used, all remaining arguments are directories to create.
  # When -t is used, the destination is already specified.
  # Otherwise, the last argument is the destination.  Remove it from $@.
  for arg
  do
    if test -n "$dst_arg"; then
      # $@ is not empty: it contains at least $arg.
      set fnord "$@" "$dst_arg"
      shift # fnord
    fi
    shift # arg
    dst_arg=$arg
    # Protect names problematic for 'test' and other utilities.
    case $dst_arg in
      -* | [=\(\)!]) dst_arg=./$dst_arg;;
    esac
  done
fi

if test $# -eq 0; then
  if test -z "$dir_arg"; then
    echo "$0: no input file specified." >&2
    exit 1
  fi
  # It's OK to call 'install-sh -d' without argument.
  # This can happen when creating conditional directories.
  exit 0
fi

if test -z "$dir_arg"; then
  if test $# -gt 1 || test "$is_target_a_directory" = always; then
    if test ! -d "$dst_arg"; then
      echo "$0: $dst_arg: Is not a directory." >&2
      exit 1
    fi
  fi
fi

if test -z "$dir_arg"; then
  do_exit='(exit $ret); exit $ret'
  trap "ret=129; $do_exit" 1
  trap "ret=130; $do_exit" 2
  trap "ret=141; $do_exit" 13
  trap "ret=143; $do_exit" 15

  # Set umask so as not to create temps with too-generous modes.
  # However, 'strip' requires both read and write access to temps.
  case $mode in
    # Optimize common cases.
    *644) cp_umask=133;;
    *755) cp_umask=22;;

    *[0-7])
      if test -z "$stripcmd"; then
        u_plus_rw=
      else
        u_plus_rw='% 200'
      fi
      cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
    *)
      if test -z "$stripcmd"; then
        u_plus_rw=
      else
        u_plus_rw=,u+rw
      fi
      cp_umask=$mode$u_plus_rw;;
  esac
fi

for src
do
  # Protect names problematic for 'test' and other utilities.
  case $src in
    -* | [=\(\)!]) src=./$src;;
  esac

  if test -n "$dir_arg"; then
    dst=$src
    dstdir=$dst
    test -d "$dstdir"
    dstdir_status=$?
  else

    # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
    # might cause directories to be created, which would be especially bad
    # if $src (and thus $dsttmp) contains '*'.
    if test ! -f "$src" && test ! -d "$src"; then
      echo "$0: $src does not exist." >&2
      exit 1
    fi

    if test -z "$dst_arg"; then
      echo "$0: no destination specified." >&2
      exit 1
    fi
    dst=$dst_arg

    # If destination is a directory, append the input filename.
    if test -d "$dst"; then
      if test "$is_target_a_directory" = never; then
        echo "$0: $dst_arg: Is a directory" >&2
        exit 1
      fi
      dstdir=$dst
      dstbase=`basename "$src"`
      case $dst in
	*/) dst=$dst$dstbase;;
	*)  dst=$dst/$dstbase;;
      esac
      dstdir_status=0
    else
      dstdir=`dirname "$dst"`
      test -d "$dstdir"
      dstdir_status=$?
    fi
  fi

  case $dstdir in
    */) dstdirslash=$dstdir;;
    *)  dstdirslash=$dstdir/;;
  esac

  obsolete_mkdir_used=false

  if test $dstdir_status != 0; then
    case $posix_mkdir in
      '')
        # With -d, create the new directory with the user-specified mode.
        # Otherwise, rely on $mkdir_umask.
        if test -n "$dir_arg"; then
          mkdir_mode=-m$mode
        else
          mkdir_mode=
        fi

        posix_mkdir=false
	# The $RANDOM variable is not portable (e.g., dash).  Use it
	# here however when possible just to lower collision chance.
	tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$

	trap '
	  ret=$?
	  rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir" 2>/dev/null
	  exit $ret
	' 0

	# Because "mkdir -p" follows existing symlinks and we likely work
	# directly in world-writeable /tmp, make sure that the '$tmpdir'
	# directory is successfully created first before we actually test
	# 'mkdir -p'.
	if (umask $mkdir_umask &&
	    $mkdirprog $mkdir_mode "$tmpdir" &&
	    exec $mkdirprog $mkdir_mode -p -- "$tmpdir/a/b") >/dev/null 2>&1
	then
	  if test -z "$dir_arg" || {
	       # Check for POSIX incompatibilities with -m.
	       # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
	       # other-writable bit of parent directory when it shouldn't.
	       # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
	       test_tmpdir="$tmpdir/a"
	       ls_ld_tmpdir=`ls -ld "$test_tmpdir"`
	       case $ls_ld_tmpdir in
		 d????-?r-*) different_mode=700;;
		 d????-?--*) different_mode=755;;
		 *) false;;
	       esac &&
	       $mkdirprog -m$different_mode -p -- "$test_tmpdir" && {
		 ls_ld_tmpdir_1=`ls -ld "$test_tmpdir"`
		 test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
	       }
	     }
	  then posix_mkdir=:
	  fi
	  rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir"
	else
	  # Remove any dirs left behind by ancient mkdir implementations.
	  rmdir ./$mkdir_mode ./-p ./-- "$tmpdir" 2>/dev/null
	fi
	trap '' 0;;
    esac

    if
      $posix_mkdir && (
        umask $mkdir_umask &&
        $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
      )
    then :
    else

      # mkdir does not conform to POSIX,
      # or it failed possibly due to a race condition.  Create the
      # directory the slow way, step by step, checking for races as we go.

      case $dstdir in
        /*) prefix='/';;
        [-=\(\)!]*) prefix='./';;
        *)  prefix='';;
      esac

      oIFS=$IFS
      IFS=/
      set -f
      set fnord $dstdir
      shift
      set +f
      IFS=$oIFS

      prefixes=

      for d
      do
        test X"$d" = X && continue

        prefix=$prefix$d
        if test -d "$prefix"; then
          prefixes=
        else
          if $posix_mkdir; then
            (umask $mkdir_umask &&
             $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
            # Don't fail if two instances are running concurrently.
            test -d "$prefix" || exit 1
          else
            case $prefix in
              *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
              *) qprefix=$prefix;;
            esac
            prefixes="$prefixes '$qprefix'"
          fi
        fi
        prefix=$prefix/
      done

      if test -n "$prefixes"; then
        # Don't fail if two instances are running concurrently.
        (umask $mkdir_umask &&
         eval "\$doit_exec \$mkdirprog $prefixes") ||
          test -d "$dstdir" || exit 1
        obsolete_mkdir_used=true
      fi
    fi
  fi

  if test -n "$dir_arg"; then
    { test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
    { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
      test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
  else

    # Make a couple of temp file names in the proper directory.
    dsttmp=${dstdirslash}_inst.$$_
    rmtmp=${dstdirslash}_rm.$$_

    # Trap to clean up those temp files at exit.
    trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0

    # Copy the file name to the temp name.
    (umask $cp_umask &&
     { test -z "$stripcmd" || {
	 # Create $dsttmp read-write so that cp doesn't create it read-only,
	 # which would cause strip to fail.
	 if test -z "$doit"; then
	   : >"$dsttmp" # No need to fork-exec 'touch'.
	 else
	   $doit touch "$dsttmp"
	 fi
       }
     } &&
     $doit_exec $cpprog "$src" "$dsttmp") &&

    # and set any options; do chmod last to preserve setuid bits.
    #
    # If any of these fail, we abort the whole thing.  If we want to
    # ignore errors from any of these, just make sure not to ignore
    # errors from the above "$doit $cpprog $src $dsttmp" command.
    #
    { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
    { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
    { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&

    # If -C, don't bother to copy if it wouldn't change the file.
    if $copy_on_change &&
       old=`LC_ALL=C ls -dlL "$dst"     2>/dev/null` &&
       new=`LC_ALL=C ls -dlL "$dsttmp"  2>/dev/null` &&
       set -f &&
       set X $old && old=:$2:$4:$5:$6 &&
       set X $new && new=:$2:$4:$5:$6 &&
       set +f &&
       test "$old" = "$new" &&
       $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
    then
      rm -f "$dsttmp"
    else
      # Rename the file to the real destination.
      $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||

      # The rename failed, perhaps because mv can't rename something else
      # to itself, or perhaps because mv is so ancient that it does not
      # support -f.
      {
        # Now remove or move aside any old file at destination location.
        # We try this two ways since rm can't unlink itself on some
        # systems and the destination file might be busy for other
        # reasons.  In this case, the final cleanup might fail but the new
        # file should still install successfully.
        {
          test ! -f "$dst" ||
          $doit $rmcmd -f "$dst" 2>/dev/null ||
          { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
            { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
          } ||
          { echo "$0: cannot unlink or rename $dst" >&2
            (exit 1); exit 1
          }
        } &&

        # Now rename the file to the real destination.
        $doit $mvcmd "$dsttmp" "$dst"
      }
    fi || exit 1

    trap '' 0
  fi
done

# Local variables:
# eval: (add-hook 'before-save-hook 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-time-zone: "UTC0"
# time-stamp-end: "; # UTC"
# End:

Added tclconfig/license.terms version [0639ae334e].









































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This software is copyrighted by the Regents of the University of
California, Sun Microsystems, Inc., Scriptics Corporation, ActiveState
Corporation and other parties.  The following terms apply to all files
associated with the software unless explicitly disclaimed in
individual files.

The authors hereby grant permission to use, copy, modify, distribute,
and license this software and its documentation for any purpose, provided
that existing copyright notices are retained in all copies and that this
notice is included verbatim in any distributions. No written agreement,
license, or royalty fee is required for any of the authorized uses.
Modifications to this software may be copyrighted by their authors
and need not follow the licensing terms described here, provided that
the new terms are clearly indicated on the first page of each file where
they apply.

IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY
FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY
DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.  THIS SOFTWARE
IS PROVIDED ON AN "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE
NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR
MODIFICATIONS.

GOVERNMENT USE: If you are acquiring this software on behalf of the
U.S. government, the Government shall have only "Restricted Rights"
in the software and related documentation as defined in the Federal
Acquisition Regulations (FARs) in Clause 52.227.19 (c) (2).  If you
are acquiring the software on behalf of the Department of Defense, the
software shall be classified as "Commercial Computer Software" and the
Government shall have only "Restricted Rights" as defined in Clause
252.227-7014 (b) (3) of DFARs.  Notwithstanding the foregoing, the
authors grant the U.S. Government and others acting in its behalf
permission to use and distribute the software in accordance with the
terms specified in this license.

Added tclconfig/tcl.m4 version [a5fca333c8].









































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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# tcl.m4 --
#
#	This file provides a set of autoconf macros to help TEA-enable
#	a Tcl extension.
#
# Copyright (c) 1999-2000 Ajuba Solutions.
# Copyright (c) 2002-2005 ActiveState Corporation.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.

AC_PREREQ([2.69])

# Possible values for key variables defined:
#
# TEA_WINDOWINGSYSTEM - win32 aqua x11 (mirrors 'tk windowingsystem')
# TEA_PLATFORM        - windows unix
# TEA_TK_EXTENSION    - True if this is a Tk extension
#

#------------------------------------------------------------------------
# TEA_PATH_TCLCONFIG --
#
#	Locate the tclConfig.sh file and perform a sanity check on
#	the Tcl compile flags
#
# Arguments:
#	none
#
# Results:
#
#	Adds the following arguments to configure:
#		--with-tcl=...
#
#	Defines the following vars:
#		TCL_BIN_DIR	Full path to the directory containing
#				the tclConfig.sh file
#------------------------------------------------------------------------

AC_DEFUN([TEA_PATH_TCLCONFIG], [
    dnl TEA specific: Make sure we are initialized
    AC_REQUIRE([TEA_INIT])
    #
    # Ok, lets find the tcl configuration
    # First, look for one uninstalled.
    # the alternative search directory is invoked by --with-tcl
    #

    if test x"${no_tcl}" = x ; then
	# we reset no_tcl in case something fails here
	no_tcl=true
	AC_ARG_WITH(tcl,
	    AS_HELP_STRING([--with-tcl],
		[directory containing tcl configuration (tclConfig.sh)]),
	    [with_tclconfig="${withval}"])
	AC_ARG_WITH(tcl8,
	    AS_HELP_STRING([--with-tcl8],
		[Compile for Tcl8 in Tcl9 environment]),
	    [with_tcl8="${withval}"])
	AC_MSG_CHECKING([for Tcl configuration])
	AC_CACHE_VAL(ac_cv_c_tclconfig,[

	    # First check to see if --with-tcl was specified.
	    if test x"${with_tclconfig}" != x ; then
		case "${with_tclconfig}" in
		    */tclConfig.sh )
			if test -f "${with_tclconfig}"; then
			    AC_MSG_WARN([--with-tcl argument should refer to directory containing tclConfig.sh, not to tclConfig.sh itself])
			    with_tclconfig="`echo "${with_tclconfig}" | sed 's!/tclConfig\.sh$!!'`"
			fi ;;
		esac
		if test -f "${with_tclconfig}/tclConfig.sh" ; then
		    ac_cv_c_tclconfig="`(cd "${with_tclconfig}"; pwd)`"
		else
		    AC_MSG_ERROR([${with_tclconfig} directory doesn't contain tclConfig.sh])
		fi
	    fi

	    # then check for a private Tcl installation
	    if test x"${ac_cv_c_tclconfig}" = x ; then
		for i in \
			../tcl \
			`ls -dr ../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
			`ls -dr ../tcl[[8-9]].[[0-9]] 2>/dev/null` \
			`ls -dr ../tcl[[8-9]].[[0-9]]* 2>/dev/null` \
			../../tcl \
			`ls -dr ../../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
			`ls -dr ../../tcl[[8-9]].[[0-9]] 2>/dev/null` \
			`ls -dr ../../tcl[[8-9]].[[0-9]]* 2>/dev/null` \
			../../../tcl \
			`ls -dr ../../../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
			`ls -dr ../../../tcl[[8-9]].[[0-9]] 2>/dev/null` \
			`ls -dr ../../../tcl[[8-9]].[[0-9]]* 2>/dev/null` ; do
		    if test "${TEA_PLATFORM}" = "windows" \
			    -a -f "$i/win/tclConfig.sh" ; then
			ac_cv_c_tclconfig="`(cd $i/win; pwd)`"
			break
		    fi
		    if test -f "$i/unix/tclConfig.sh" ; then
			ac_cv_c_tclconfig="`(cd $i/unix; pwd)`"
			break
		    fi
		done
	    fi

	    # on Darwin, check in Framework installation locations
	    if test "`uname -s`" = "Darwin" -a x"${ac_cv_c_tclconfig}" = x ; then
		for i in `ls -d ~/Library/Frameworks 2>/dev/null` \
			`ls -d /Library/Frameworks 2>/dev/null` \
			`ls -d /Network/Library/Frameworks 2>/dev/null` \
			`ls -d /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/Library/Frameworks/Tcl.framework 2>/dev/null` \
			`ls -d /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/Network/Library/Frameworks/Tcl.framework 2>/dev/null` \
			`ls -d /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Tcl.framework 2>/dev/null` \
			; do
		    if test -f "$i/Tcl.framework/tclConfig.sh" ; then
			ac_cv_c_tclconfig="`(cd $i/Tcl.framework; pwd)`"
			break
		    fi
		done
	    fi

	    # TEA specific: on Windows, check in common installation locations
	    if test "${TEA_PLATFORM}" = "windows" \
		-a x"${ac_cv_c_tclconfig}" = x ; then
		for i in `ls -d C:/Tcl/lib 2>/dev/null` \
			`ls -d C:/Progra~1/Tcl/lib 2>/dev/null` \
			; do
		    if test -f "$i/tclConfig.sh" ; then
			ac_cv_c_tclconfig="`(cd $i; pwd)`"
			break
		    fi
		done
	    fi

	    # check in a few common install locations
	    if test x"${ac_cv_c_tclconfig}" = x ; then
		for i in `ls -d ${libdir} 2>/dev/null` \
			`ls -d ${exec_prefix}/lib 2>/dev/null` \
			`ls -d ${prefix}/lib 2>/dev/null` \
			`ls -d /usr/local/lib 2>/dev/null` \
			`ls -d /usr/contrib/lib 2>/dev/null` \
			`ls -d /usr/pkg/lib 2>/dev/null` \
			`ls -d /usr/lib 2>/dev/null` \
			`ls -d /usr/lib64 2>/dev/null` \
			`ls -d /usr/lib/tcl8.6 2>/dev/null` \
			`ls -d /usr/lib/tcl8.5 2>/dev/null` \
			`ls -d /usr/local/lib/tcl8.6 2>/dev/null` \
			`ls -d /usr/local/lib/tcl8.5 2>/dev/null` \
			`ls -d /usr/local/lib/tcl/tcl8.6 2>/dev/null` \
			`ls -d /usr/local/lib/tcl/tcl8.5 2>/dev/null` \
			; do
		    if test -f "$i/tclConfig.sh" ; then
			ac_cv_c_tclconfig="`(cd $i; pwd)`"
			break
		    fi
		done
	    fi

	    # check in a few other private locations
	    if test x"${ac_cv_c_tclconfig}" = x ; then
		for i in \
			${srcdir}/../tcl \
			`ls -dr ${srcdir}/../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
			`ls -dr ${srcdir}/../tcl[[8-9]].[[0-9]] 2>/dev/null` \
			`ls -dr ${srcdir}/../tcl[[8-9]].[[0-9]]* 2>/dev/null` ; do
		    if test "${TEA_PLATFORM}" = "windows" \
			    -a -f "$i/win/tclConfig.sh" ; then
			ac_cv_c_tclconfig="`(cd $i/win; pwd)`"
			break
		    fi
		    if test -f "$i/unix/tclConfig.sh" ; then
			ac_cv_c_tclconfig="`(cd $i/unix; pwd)`"
			break
		    fi
		done
	    fi
	])

	if test x"${ac_cv_c_tclconfig}" = x ; then
	    TCL_BIN_DIR="# no Tcl configs found"
	    AC_MSG_ERROR([Can't find Tcl configuration definitions. Use --with-tcl to specify a directory containing tclConfig.sh])
	else
	    no_tcl=
	    TCL_BIN_DIR="${ac_cv_c_tclconfig}"
	    AC_MSG_RESULT([found ${TCL_BIN_DIR}/tclConfig.sh])
	fi
    fi
])

#------------------------------------------------------------------------
# TEA_PATH_TKCONFIG --
#
#	Locate the tkConfig.sh file
#
# Arguments:
#	none
#
# Results:
#
#	Adds the following arguments to configure:
#		--with-tk=...
#
#	Defines the following vars:
#		TK_BIN_DIR	Full path to the directory containing
#				the tkConfig.sh file
#------------------------------------------------------------------------

AC_DEFUN([TEA_PATH_TKCONFIG], [
    #
    # Ok, lets find the tk configuration
    # First, look for one uninstalled.
    # the alternative search directory is invoked by --with-tk
    #

    if test x"${no_tk}" = x ; then
	# we reset no_tk in case something fails here
	no_tk=true
	AC_ARG_WITH(tk,
	    AS_HELP_STRING([--with-tk],
		[directory containing tk configuration (tkConfig.sh)]),
	    [with_tkconfig="${withval}"])
	AC_MSG_CHECKING([for Tk configuration])
	AC_CACHE_VAL(ac_cv_c_tkconfig,[

	    # First check to see if --with-tkconfig was specified.
	    if test x"${with_tkconfig}" != x ; then
		case "${with_tkconfig}" in
		    */tkConfig.sh )
			if test -f "${with_tkconfig}"; then
			    AC_MSG_WARN([--with-tk argument should refer to directory containing tkConfig.sh, not to tkConfig.sh itself])
			    with_tkconfig="`echo "${with_tkconfig}" | sed 's!/tkConfig\.sh$!!'`"
			fi ;;
		esac
		if test -f "${with_tkconfig}/tkConfig.sh" ; then
		    ac_cv_c_tkconfig="`(cd "${with_tkconfig}"; pwd)`"
		else
		    AC_MSG_ERROR([${with_tkconfig} directory doesn't contain tkConfig.sh])
		fi
	    fi

	    # then check for a private Tk library
	    if test x"${ac_cv_c_tkconfig}" = x ; then
		for i in \
			../tk \
			`ls -dr ../tk[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
			`ls -dr ../tk[[8-9]].[[0-9]] 2>/dev/null` \
			`ls -dr ../tk[[8-9]].[[0-9]]* 2>/dev/null` \
			../../tk \
			`ls -dr ../../tk[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
			`ls -dr ../../tk[[8-9]].[[0-9]] 2>/dev/null` \
			`ls -dr ../../tk[[8-9]].[[0-9]]* 2>/dev/null` \
			../../../tk \
			`ls -dr ../../../tk[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
			`ls -dr ../../../tk[[8-9]].[[0-9]] 2>/dev/null` \
			`ls -dr ../../../tk[[8-9]].[[0-9]]* 2>/dev/null` ; do
		    if test "${TEA_PLATFORM}" = "windows" \
			    -a -f "$i/win/tkConfig.sh" ; then
			ac_cv_c_tkconfig="`(cd $i/win; pwd)`"
			break
		    fi
		    if test -f "$i/unix/tkConfig.sh" ; then
			ac_cv_c_tkconfig="`(cd $i/unix; pwd)`"
			break
		    fi
		done
	    fi

	    # on Darwin, check in Framework installation locations
	    if test "`uname -s`" = "Darwin" -a x"${ac_cv_c_tkconfig}" = x ; then
		for i in `ls -d ~/Library/Frameworks 2>/dev/null` \
			`ls -d /Library/Frameworks 2>/dev/null` \
			`ls -d /Network/Library/Frameworks 2>/dev/null` \
			; do
		    if test -f "$i/Tk.framework/tkConfig.sh" ; then
			ac_cv_c_tkconfig="`(cd $i/Tk.framework; pwd)`"
			break
		    fi
		done
	    fi

	    # check in a few common install locations
	    if test x"${ac_cv_c_tkconfig}" = x ; then
		for i in `ls -d ${libdir} 2>/dev/null` \
			`ls -d ${exec_prefix}/lib 2>/dev/null` \
			`ls -d ${prefix}/lib 2>/dev/null` \
			`ls -d /usr/local/lib 2>/dev/null` \
			`ls -d /usr/contrib/lib 2>/dev/null` \
			`ls -d /usr/pkg/lib 2>/dev/null` \
			`ls -d /usr/lib/tk8.6 2>/dev/null` \
			`ls -d /usr/lib/tk8.5 2>/dev/null` \
			`ls -d /usr/lib 2>/dev/null` \
			`ls -d /usr/lib64 2>/dev/null` \
			`ls -d /usr/local/lib/tk8.6 2>/dev/null` \
			`ls -d /usr/local/lib/tk8.5 2>/dev/null` \
			`ls -d /usr/local/lib/tcl/tk8.6 2>/dev/null` \
			`ls -d /usr/local/lib/tcl/tk8.5 2>/dev/null` \
			; do
		    if test -f "$i/tkConfig.sh" ; then
			ac_cv_c_tkconfig="`(cd $i; pwd)`"
			break
		    fi
		done
	    fi

	    # TEA specific: on Windows, check in common installation locations
	    if test "${TEA_PLATFORM}" = "windows" \
		-a x"${ac_cv_c_tkconfig}" = x ; then
		for i in `ls -d C:/Tcl/lib 2>/dev/null` \
			`ls -d C:/Progra~1/Tcl/lib 2>/dev/null` \
			; do
		    if test -f "$i/tkConfig.sh" ; then
			ac_cv_c_tkconfig="`(cd $i; pwd)`"
			break
		    fi
		done
	    fi

	    # check in a few other private locations
	    if test x"${ac_cv_c_tkconfig}" = x ; then
		for i in \
			${srcdir}/../tk \
			`ls -dr ${srcdir}/../tk[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
			`ls -dr ${srcdir}/../tk[[8-9]].[[0-9]] 2>/dev/null` \
			`ls -dr ${srcdir}/../tk[[8-9]].[[0-9]]* 2>/dev/null` ; do
		    if test "${TEA_PLATFORM}" = "windows" \
			    -a -f "$i/win/tkConfig.sh" ; then
			ac_cv_c_tkconfig="`(cd $i/win; pwd)`"
			break
		    fi
		    if test -f "$i/unix/tkConfig.sh" ; then
			ac_cv_c_tkconfig="`(cd $i/unix; pwd)`"
			break
		    fi
		done
	    fi
	])

	if test x"${ac_cv_c_tkconfig}" = x ; then
	    TK_BIN_DIR="# no Tk configs found"
	    AC_MSG_ERROR([Can't find Tk configuration definitions. Use --with-tk to specify a directory containing tkConfig.sh])
	else
	    no_tk=
	    TK_BIN_DIR="${ac_cv_c_tkconfig}"
	    AC_MSG_RESULT([found ${TK_BIN_DIR}/tkConfig.sh])
	fi
    fi
])

#------------------------------------------------------------------------
# TEA_LOAD_TCLCONFIG --
#
#	Load the tclConfig.sh file
#
# Arguments:
#
#	Requires the following vars to be set:
#		TCL_BIN_DIR
#
# Results:
#
#	Substitutes the following vars:
#		TCL_BIN_DIR
#		TCL_SRC_DIR
#		TCL_LIB_FILE
#		TCL_ZIP_FILE
#		TCL_ZIPFS_SUPPORT
#------------------------------------------------------------------------

AC_DEFUN([TEA_LOAD_TCLCONFIG], [
    AC_MSG_CHECKING([for existence of ${TCL_BIN_DIR}/tclConfig.sh])

    if test -f "${TCL_BIN_DIR}/tclConfig.sh" ; then
        AC_MSG_RESULT([loading])
	. "${TCL_BIN_DIR}/tclConfig.sh"
    else
        AC_MSG_RESULT([could not find ${TCL_BIN_DIR}/tclConfig.sh])
    fi

    # If the TCL_BIN_DIR is the build directory (not the install directory),
    # then set the common variable name to the value of the build variables.
    # For example, the variable TCL_LIB_SPEC will be set to the value
    # of TCL_BUILD_LIB_SPEC. An extension should make use of TCL_LIB_SPEC
    # instead of TCL_BUILD_LIB_SPEC since it will work with both an
    # installed and uninstalled version of Tcl.
    if test -f "${TCL_BIN_DIR}/Makefile" ; then
        TCL_LIB_SPEC="${TCL_BUILD_LIB_SPEC}"
        TCL_STUB_LIB_SPEC="${TCL_BUILD_STUB_LIB_SPEC}"
        TCL_STUB_LIB_PATH="${TCL_BUILD_STUB_LIB_PATH}"
    elif test "`uname -s`" = "Darwin"; then
	# If Tcl was built as a framework, attempt to use the libraries
	# from the framework at the given location so that linking works
	# against Tcl.framework installed in an arbitrary location.
	case ${TCL_DEFS} in
	    *TCL_FRAMEWORK*)
		if test -f "${TCL_BIN_DIR}/${TCL_LIB_FILE}"; then
		    for i in "`cd "${TCL_BIN_DIR}"; pwd`" \
			     "`cd "${TCL_BIN_DIR}"/../..; pwd`"; do
			if test "`basename "$i"`" = "${TCL_LIB_FILE}.framework"; then
			    TCL_LIB_SPEC="-F`dirname "$i" | sed -e 's/ /\\\\ /g'` -framework ${TCL_LIB_FILE}"
			    break
			fi
		    done
		fi
		if test -f "${TCL_BIN_DIR}/${TCL_STUB_LIB_FILE}"; then
		    TCL_STUB_LIB_SPEC="-L`echo "${TCL_BIN_DIR}"  | sed -e 's/ /\\\\ /g'` ${TCL_STUB_LIB_FLAG}"
		    TCL_STUB_LIB_PATH="${TCL_BIN_DIR}/${TCL_STUB_LIB_FILE}"
		fi
		;;
	esac
    fi

    AC_SUBST(TCL_VERSION)
    AC_SUBST(TCL_PATCH_LEVEL)
    AC_SUBST(TCL_BIN_DIR)
    AC_SUBST(TCL_SRC_DIR)

    AC_SUBST(TCL_LIB_FILE)
    AC_SUBST(TCL_LIB_FLAG)
    AC_SUBST(TCL_LIB_SPEC)

    AC_SUBST(TCL_STUB_LIB_FILE)
    AC_SUBST(TCL_STUB_LIB_FLAG)
    AC_SUBST(TCL_STUB_LIB_SPEC)

    AC_MSG_CHECKING([platform])
    hold_cc=$CC; CC="$TCL_CC"
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
	    #ifdef _WIN32
		#error win32
	    #endif
	]])],[
	    # first test we've already retrieved platform (cross-compile), fallback to unix otherwise:
	    TEA_PLATFORM="${TEA_PLATFORM-unix}"
	    CYGPATH=echo
	],[
	    TEA_PLATFORM="windows"
	    AC_CHECK_PROG(CYGPATH, cygpath, cygpath -m, echo)
    ])
    CC=$hold_cc
    AC_MSG_RESULT($TEA_PLATFORM)

    # The BUILD_$pkg is to define the correct extern storage class
    # handling when making this package
    AC_DEFINE_UNQUOTED(BUILD_${PACKAGE_NAME}, [],
	    [Building extension source?])
    # Do this here as we have fully defined TEA_PLATFORM now
    if test "${TEA_PLATFORM}" = "windows" ; then
	EXEEXT=".exe"
	CLEANFILES="$CLEANFILES *.lib *.dll *.pdb *.exp"
    fi

    # TEA specific:
    AC_SUBST(CLEANFILES)
    AC_SUBST(TCL_LIBS)
    AC_SUBST(TCL_DEFS)
    AC_SUBST(TCL_EXTRA_CFLAGS)
    AC_SUBST(TCL_LD_FLAGS)
    AC_SUBST(TCL_SHLIB_LD_LIBS)
])

#------------------------------------------------------------------------
# TEA_LOAD_TKCONFIG --
#
#	Load the tkConfig.sh file
#
# Arguments:
#
#	Requires the following vars to be set:
#		TK_BIN_DIR
#
# Results:
#
#	Sets the following vars that should be in tkConfig.sh:
#		TK_BIN_DIR
#------------------------------------------------------------------------

AC_DEFUN([TEA_LOAD_TKCONFIG], [
    AC_MSG_CHECKING([for existence of ${TK_BIN_DIR}/tkConfig.sh])

    if test -f "${TK_BIN_DIR}/tkConfig.sh" ; then
        AC_MSG_RESULT([loading])
	. "${TK_BIN_DIR}/tkConfig.sh"
    else
        AC_MSG_RESULT([could not find ${TK_BIN_DIR}/tkConfig.sh])
    fi

    # If the TK_BIN_DIR is the build directory (not the install directory),
    # then set the common variable name to the value of the build variables.
    # For example, the variable TK_LIB_SPEC will be set to the value
    # of TK_BUILD_LIB_SPEC. An extension should make use of TK_LIB_SPEC
    # instead of TK_BUILD_LIB_SPEC since it will work with both an
    # installed and uninstalled version of Tcl.
    if test -f "${TK_BIN_DIR}/Makefile" ; then
        TK_LIB_SPEC="${TK_BUILD_LIB_SPEC}"
        TK_STUB_LIB_SPEC="${TK_BUILD_STUB_LIB_SPEC}"
        TK_STUB_LIB_PATH="${TK_BUILD_STUB_LIB_PATH}"
    elif test "`uname -s`" = "Darwin"; then
	# If Tk was built as a framework, attempt to use the libraries
	# from the framework at the given location so that linking works
	# against Tk.framework installed in an arbitrary location.
	case ${TK_DEFS} in
	    *TK_FRAMEWORK*)
		if test -f "${TK_BIN_DIR}/${TK_LIB_FILE}"; then
		    fo