Changes On Branch wip-fix-io-layer

Changes In Branch wip-fix-io-layer Excluding Merge-Ins

This is equivalent to a diff from 387697ce68 to f73f94ae35

2016-12-13
05:12
Merged in work for the I/O layer being updated check-in: 2f45dac5f7 user: rkeene tags: trunk
05:11
Updated to properly sanitize memory needed for the dynamically allocated locks Closed-Leaf check-in: f73f94ae35 user: rkeene tags: wip-fix-io-layer
04:50
Updated to not declare variables for checking for fastpath unless fastpath is being compiled in check-in: 0a5d288053 user: rkeene tags: wip-fix-io-layer
03:21
Merged in trunk check-in: e5c9bfe50f user: rkeene tags: wip-fix-io-layer
03:20
Updated to deal with locking slightly better, maybe check-in: 387697ce68 user: rkeene tags: trunk
2016-12-12
22:39
Enabled more warnings check-in: b255cfbc6b user: rkeene tags: trunk

Modified configure.in from [6606614e6e] to [fc447b80f6].

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fi

dnl Find "xxd" so we can build the tls.tcl.h file
AC_CHECK_PROG([XXD], [xxd], [xxd], [__xxd__not__found])

dnl Find "pkg-config" since we need to use it
AC_CHECK_TOOL([PKGCONFIG], [pkg-config], [false])













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'
	fi
])

dnl Enable compiler warnings
AX_CHECK_COMPILE_FLAG([-Wall], [CFLAGS="$CFLAGS -Wall"])
AX_CHECK_COMPILE_FLAG([-W], [CFLAGS="$CFLAGS -W"])




dnl Enable hardening
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])

dnl XXX:TODO: Automatically determine the SSL library to use







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fi

dnl Find "xxd" so we can build the tls.tcl.h file
AC_CHECK_PROG([XXD], [xxd], [xxd], [__xxd__not__found])

dnl Find "pkg-config" since we need to use it
AC_CHECK_TOOL([PKGCONFIG], [pkg-config], [false])

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

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'
	fi
])

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"])
])

dnl Enable hardening
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])

dnl XXX:TODO: Automatically determine the SSL library to use

Modified tests/all.tcl from [a5976d4aa4] to [f0eb96603f].

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if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

set ::tcltest::testSingleFile false
set ::tcltest::testsDirectory [file dir [info script]]


# We should ensure that the testsDirectory is absolute.
# This was introduced in Tcl 8.3+'s tcltest, so we need a catch.
catch {::tcltest::normalizePath ::tcltest::testsDirectory}

puts stdout "Tests running in interp:  [info nameofexecutable]"
puts stdout "Tests running in working dir:  $::tcltest::testsDirectory"







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if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

set ::tcltest::testSingleFile false
set ::tcltest::testsDirectory [file dir [info script]]
::tcltest::configure -verbose start

# We should ensure that the testsDirectory is absolute.
# This was introduced in Tcl 8.3+'s tcltest, so we need a catch.
catch {::tcltest::normalizePath ::tcltest::testsDirectory}

puts stdout "Tests running in interp:  [info nameofexecutable]"
puts stdout "Tests running in working dir:  $::tcltest::testsDirectory"

Modified tests/tlsIO.test from [956043a072] to [4095544044].

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	    set doTestsWithRemoteServer 0
	} else {
	    set remoteServerIP 127.0.0.1
	    set remoteFile [file join [pwd] remote.tcl]
	    if {[catch {set remoteProcChan \
		    [open "|[list $::tcltest::tcltest $remoteFile \
		    -serverIsSilent -port $remoteServerPort \
		    -address $remoteServerIP]" w+]} msg] == 0} {
		after 1000
		if {[catch {set commandSocket [tls::socket -cafile $caCert \
			-certfile $clientCert -keyfile $clientKey \
			$remoteServerIP $remoteServerPort]} msg] == 0} {
		    fconfigure $commandSocket -translation crlf -buffering line
		} else {
		    set noRemoteTestReason $msg







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	    set doTestsWithRemoteServer 0
	} else {
	    set remoteServerIP 127.0.0.1
	    set remoteFile [file join [pwd] remote.tcl]
	    if {[catch {set remoteProcChan \
		    [open "|[list $::tcltest::tcltest $remoteFile \
		    -serverIsSilent -port $remoteServerPort \
		    -address $remoteServerIP] 2> /dev/null" w+]} msg] == 0} {
		after 1000
		if {[catch {set commandSocket [tls::socket -cafile $caCert \
			-certfile $clientCert -keyfile $clientKey \
			$remoteServerIP $remoteServerPort]} msg] == 0} {
		    fconfigure $commandSocket -translation crlf -buffering line
		} else {
		    set noRemoteTestReason $msg
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	puts ready
	vwait x
	after cancel $timer
	close $f
	puts $x
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r]
    gets $f x
    if {[catch {tls::socket -certfile $clientCert -cafile $caCert \
	-keyfile $clientKey 127.0.0.1 8828} msg]} {
        set x $msg
    } else {
        lappend x [gets $f]
        close $msg







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	puts ready
	vwait x
	after cancel $timer
	close $f
	puts $x
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script] 2> /dev/null" r]
    gets $f x
    if {[catch {tls::socket -certfile $clientCert -cafile $caCert \
	-keyfile $clientKey 127.0.0.1 8828} msg]} {
        set x $msg
    } else {
        lappend x [gets $f]
        close $msg
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	}
	puts ready
	vwait x
	after cancel $timer
	close $f
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r]
    gets $f x
    global port
    if {[catch {tls::socket -myport $port \
	-certfile $clientCert -cafile $caCert \
	-keyfile $clientKey 127.0.0.1 8829} sock]} {
        set x $sock
	catch {close [tls::socket 127.0.0.1 8829]}







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	}
	puts ready
	vwait x
	after cancel $timer
	close $f
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script] 2> /dev/null" r]
    gets $f x
    global port
    if {[catch {tls::socket -myport $port \
	-certfile $clientCert -cafile $caCert \
	-keyfile $clientKey 127.0.0.1 8829} sock]} {
        set x $sock
	catch {close [tls::socket 127.0.0.1 8829]}
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	}
	puts ready
	vwait x
	after cancel $timer
	close $f
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r]
    gets $f x
    if {[catch {tls::socket -myaddr 127.0.0.1 \
	-certfile $clientCert -cafile $caCert \
	-keyfile $clientKey 127.0.0.1 8830} sock]} {
        set x $sock
    } else {
        puts $sock hello







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	}
	puts ready
	vwait x
	after cancel $timer
	close $f
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script] 2> /dev/null" r]
    gets $f x
    if {[catch {tls::socket -myaddr 127.0.0.1 \
	-certfile $clientCert -cafile $caCert \
	-keyfile $clientKey 127.0.0.1 8830} sock]} {
        set x $sock
    } else {
        puts $sock hello
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	}
	puts ready
	vwait x
	after cancel $timer
	close $f
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r]
    gets $f x
    if {[catch {tls::socket -certfile $clientCert -cafile $caCert \
	-keyfile $clientKey [info hostname] 8831} sock]} {
        set x $sock
    } else {
        puts $sock hello
	flush $sock







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	}
	puts ready
	vwait x
	after cancel $timer
	close $f
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script] 2> /dev/null" r]
    gets $f x
    if {[catch {tls::socket -certfile $clientCert -cafile $caCert \
	-keyfile $clientKey [info hostname] 8831} sock]} {
        set x $sock
    } else {
        puts $sock hello
	flush $sock
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	}
	puts ready
	vwait x
	after cancel $timer
	close $f
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r]
    gets $f x
    if {[catch {tls::socket -certfile $clientCert -cafile $caCert \
	-keyfile $clientKey 127.0.0.1 8832} sock]} {
        set x $sock
    } else {
        puts $sock hello
	flush $sock







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	}
	puts ready
	vwait x
	after cancel $timer
	close $f
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script] 2> /dev/null" r]
    gets $f x
    if {[catch {tls::socket -certfile $clientCert -cafile $caCert \
	-keyfile $clientKey 127.0.0.1 8832} sock]} {
        set x $sock
    } else {
        puts $sock hello
	flush $sock
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	puts ready
	vwait x
	after cancel $timer
	close $f
	puts done
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r]
    gets $f
    set s [tls::socket -certfile $clientCert -cafile $caCert \
	-keyfile $clientKey 127.0.0.1 8834]
    fconfigure $s -buffering line -translation lf
    puts $s "hello abcdefghijklmnop"
    after 1000
    set x [gets $s]







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	puts ready
	vwait x
	after cancel $timer
	close $f
	puts done
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script] 2> /dev/null" r]
    gets $f
    set s [tls::socket -certfile $clientCert -cafile $caCert \
	-keyfile $clientKey 127.0.0.1 8834]
    fconfigure $s -buffering line -translation lf
    puts $s "hello abcdefghijklmnop"
    after 1000
    set x [gets $s]
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	set timer [after 20000 "set x done"]
	vwait x
	after cancel $timer
	close $f
	puts "done $i"
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r]
    gets $f
    set s [tls::socket -certfile $clientCert -cafile $caCert \
	-keyfile $clientKey 127.0.0.1 8835]
    fconfigure $s -buffering line
    catch {
	for {set x 0} {$x < 50} {incr x} {
	    puts $s "hello abcdefghijklmnop"







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	set timer [after 20000 "set x done"]
	vwait x
	after cancel $timer
	close $f
	puts "done $i"
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script] 2> /dev/null" r]
    gets $f
    set s [tls::socket -certfile $clientCert -cafile $caCert \
	-keyfile $clientKey 127.0.0.1 8835]
    fconfigure $s -buffering line
    catch {
	for {set x 0} {$x < 50} {incr x} {
	    puts $s "hello abcdefghijklmnop"
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	puts ready
	vwait x
	after cancel $timer
	close $f
	puts $x
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r]
    gets $f x
    if {[catch {tls::socket 127.0.0.1 8828} msg]} {
        set x $msg
    } else {
        lappend x [gets $f]
        close $msg
    }







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	puts ready
	vwait x
	after cancel $timer
	close $f
	puts $x
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script] 2> /dev/null" r]
    gets $f x
    if {[catch {tls::socket 127.0.0.1 8828} msg]} {
        set x $msg
    } else {
        lappend x [gets $f]
        close $msg
    }
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    puts $f "set f \[tls::socket -server accept -certfile $serverCert -cafile $caCert -keyfile $serverKey 8828 \]"
    puts $f {
	puts ready
	gets stdin
	close $f
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r+]
    gets $f
    set x [list [catch {tls::socket \
	    -certfile $clientCert -cafile $caCert -keyfile $clientKey \
    	-server accept 8828} msg] \
		$msg]
    puts $f bye
    close $f







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    puts $f "set f \[tls::socket -server accept -certfile $serverCert -cafile $caCert -keyfile $serverKey 8828 \]"
    puts $f {
	puts ready
	gets stdin
	close $f
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script] 2> /dev/null" r+]
    gets $f
    set x [list [catch {tls::socket \
	    -certfile $clientCert -cafile $caCert -keyfile $clientKey \
    	-server accept 8828} msg] \
		$msg]
    puts $f bye
    close $f
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	after cancel $t2
	vwait x
	after cancel $t3
	close $s
	puts $x
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r+]
    set x [gets $f]
    set s1 [tls::socket \
	    -certfile $clientCert -cafile $caCert -keyfile $clientKey \
	    127.0.0.1 8828]
    fconfigure $s1 -buffering line
    set s2 [tls::socket \
	    -certfile $clientCert -cafile $caCert -keyfile $clientKey \
	    127.0.0.1 8828]
    fconfigure $s2 -buffering line
    set s3 [tls::socket \
	    -certfile $clientCert -cafile $caCert -keyfile $clientKey \
	    127.0.0.1 8828]
    fconfigure $s3 -buffering line
    for {set i 0} {$i < 100} {incr i} {
	puts $s1 hello,s1
	gets $s1
	puts $s2 hello,s2
	gets $s2
	puts $s3 hello,s3
	gets $s3
    }
    close $s1
    close $s2
    close $s3
    lappend x [gets $f]
    close $f







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	after cancel $t2
	vwait x
	after cancel $t3
	close $s
	puts $x
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script] 2> /dev/null" r+]
    set x [gets $f]
    set s1 [tls::socket \
	    -certfile $clientCert -cafile $caCert -keyfile $clientKey \
	    127.0.0.1 8828]
    fconfigure $s1 -buffering line
    set s2 [tls::socket \
	    -certfile $clientCert -cafile $caCert -keyfile $clientKey \
	    127.0.0.1 8828]
    fconfigure $s2 -buffering line
    set s3 [tls::socket \
	    -certfile $clientCert -cafile $caCert -keyfile $clientKey \
	    127.0.0.1 8828]
    fconfigure $s3 -buffering line
    for {set i 0} {$i < 100} {incr i} {
	puts $s1 hello,tlsIO-3.2,s1
	gets $s1
	puts $s2 hello,tlsIO-3.2,s2
	gets $s2
	puts $s3 hello,tlsIO-3.2,s3
	gets $s3
    }
    close $s1
    close $s2
    close $s3
    lappend x [gets $f]
    close $f
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	    gets $s
	}
	close $s
	puts bye
	gets stdin
    }
    close $f
    set p1 [open "|[list $::tcltest::tcltest script]" r+]
    fconfigure $p1 -buffering line
    set p2 [open "|[list $::tcltest::tcltest script]" r+]
    fconfigure $p2 -buffering line
    set p3 [open "|[list $::tcltest::tcltest script]" r+]
    fconfigure $p3 -buffering line
    proc accept {s a p} {
	fconfigure $s -buffering line
	fileevent $s readable [list echo $s]
    }
    proc echo {s} {
	global x







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	    gets $s
	}
	close $s
	puts bye
	gets stdin
    }
    close $f
    set p1 [open "|[list $::tcltest::tcltest script] 2> /dev/null" r+]
    fconfigure $p1 -buffering line
    set p2 [open "|[list $::tcltest::tcltest script] 2> /dev/null" r+]
    fconfigure $p2 -buffering line
    set p3 [open "|[list $::tcltest::tcltest script] 2> /dev/null" r+]
    fconfigure $p3 -buffering line
    proc accept {s a p} {
	fconfigure $s -buffering line
	fileevent $s readable [list echo $s]
    }
    proc echo {s} {
	global x
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    puts $f [list set auto_path $auto_path]
    puts $f {
    	package require tls
	gets stdin
    }
    puts $f [list tls::socket -cafile $caCert 127.0.0.1 8848]
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r+]
    proc bgerror args {
	global x
	set x $args
    }
    proc accept {s a p} {expr 10 / 0}
    set s [tls::socket -server accept \
	    -certfile $serverCert -cafile $caCert -keyfile $serverKey 8848]







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    puts $f [list set auto_path $auto_path]
    puts $f {
    	package require tls
	gets stdin
    }
    puts $f [list tls::socket -cafile $caCert 127.0.0.1 8848]
    close $f
    set f [open "|[list $::tcltest::tcltest script] 2> /dev/null" r+]
    proc bgerror args {
	global x
	set x $args
    }
    proc accept {s a p} {expr 10 / 0}
    set s [tls::socket -server accept \
	    -certfile $serverCert -cafile $caCert -keyfile $serverKey 8848]
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	}
	puts ready
	set timer [after 10000 "set x timed_out"]
	vwait x
	after cancel $timer
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r]
    gets $f
    set s [tls::socket \
	    -certfile $clientCert -cafile $caCert -keyfile $clientKey \
	    127.0.0.1 8820]
    set p [fconfigure $s -peername]
    close $s
    close $f







|







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	}
	puts ready
	set timer [after 10000 "set x timed_out"]
	vwait x
	after cancel $timer
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script] 2> /dev/null" r]
    gets $f
    set s [tls::socket \
	    -certfile $clientCert -cafile $caCert -keyfile $clientKey \
	    127.0.0.1 8820]
    set p [fconfigure $s -peername]
    close $s
    close $f
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	}
	puts ready
	set timer [after 10000 "set x timed_out"]
	vwait x
	after cancel $timer
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r]
    gets $f
    set s [tls::socket \
	    -certfile $clientCert -cafile $caCert -keyfile $clientKey \
	    127.0.0.1 8821]
    set p [fconfigure $s -sockname]
    close $s
    close $f







|







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	}
	puts ready
	set timer [after 10000 "set x timed_out"]
	vwait x
	after cancel $timer
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script] 2> /dev/null" r]
    gets $f
    set s [tls::socket \
	    -certfile $clientCert -cafile $caCert -keyfile $clientKey \
	    127.0.0.1 8821]
    set p [fconfigure $s -sockname]
    close $s
    close $f
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	    $remoteServerIP 8836]
    fconfigure $s2 -buffering line
    set s3 [tls::socket \
	    -certfile $clientCert -cafile $caCert -keyfile $clientKey \
	    $remoteServerIP 8836]
    fconfigure $s3 -buffering line
    for {set i 0} {$i < 100} {incr i} {
	puts $s1 hello,s1
	gets $s1
	puts $s2 hello,s2
	gets $s2
	puts $s3 hello,s3
	gets $s3
    }
    close $s1
    close $s2
    close $s3
    sendCommand {close $socket10_9_test_server}
    set i







|

|

|







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	    $remoteServerIP 8836]
    fconfigure $s2 -buffering line
    set s3 [tls::socket \
	    -certfile $clientCert -cafile $caCert -keyfile $clientKey \
	    $remoteServerIP 8836]
    fconfigure $s3 -buffering line
    for {set i 0} {$i < 100} {incr i} {
	puts $s1 hello,tlsIO-11.7,s1
	gets $s1
	puts $s2 hello,tlsIO-11.7,s2
	gets $s2
	puts $s3 hello,tlsIO-11.7,s3
	gets $s3
    }
    close $s1
    close $s2
    close $s3
    sendCommand {close $socket10_9_test_server}
    set i
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               -cafile $caCert \
               -request 0 -require 0 -ssl2 0 -ssl3 0 -tls1 1 -tls1.1 0 -tls1.2 0 \
               [info hostname] 8831]
    fconfigure $c -blocking 0
    puts $c a ; flush $c
    after 5000 [list set ::done timeout]
    vwait ::done





    set ::done
} {handshake failed: wrong version number}

# cleanup
if {[string match sock* $commandSocket] == 1} {
   puts $commandSocket exit
   flush $commandSocket
}
catch {close $commandSocket}
catch {close $remoteProcChan}
::tcltest::cleanupTests
flush stdout
return







>
>
>
>
>













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               -cafile $caCert \
               -request 0 -require 0 -ssl2 0 -ssl3 0 -tls1 1 -tls1.1 0 -tls1.2 0 \
               [info hostname] 8831]
    fconfigure $c -blocking 0
    puts $c a ; flush $c
    after 5000 [list set ::done timeout]
    vwait ::done
    switch -exact -- $::done {
        "handshake failed: wrong ssl version" {
            set ::done "handshake failed: wrong version number"
        }
    }
    set ::done
} {handshake failed: wrong version number}

# cleanup
if {[string match sock* $commandSocket] == 1} {
   puts $commandSocket exit
   flush $commandSocket
}
catch {close $commandSocket}
catch {close $remoteProcChan}
::tcltest::cleanupTests
flush stdout
return

Modified tls.c from [96e2a45ac0] to [8eeae8c00a].

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

static Tcl_Mutex *locks = NULL;

static Tcl_Mutex init_mx;

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

	if (mode & CRYPTO_LOCK) {


		Tcl_MutexLock(&locks[n]);
	} else {

		Tcl_MutexUnlock(&locks[n]);
	}






}

unsigned long CryptoThreadIdCallback(void) {




	return (unsigned long) Tcl_GetCurrentThread();




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


/*
 *-------------------------------------------------------------------







>



>

>
>


>


>
>
>
>
>
>



>
>
>
>
|
>
>
>
>







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/*
 * 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;

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


/*
 *-------------------------------------------------------------------
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 */
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;



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

    cmdPtr = Tcl_DuplicateObj(statePtr->callback);

#if 0







>
>







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 */
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
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 *-------------------------------------------------------------------
 */
void
Tls_Error(State *statePtr, char *msg)
{
    Tcl_Obj *cmdPtr;



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








>
>







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 *-------------------------------------------------------------------
 */
void
Tls_Error(State *statePtr, char *msg)
{
    Tcl_Obj *cmdPtr;

    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;

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 * 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;



}
#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 result;



    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);







>
>
>









>
>







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 * 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 result;

    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);
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    if (result == TCL_OK) {
	char *ret = (char *) Tcl_GetStringResult(interp);
	strncpy(buf, ret, (size_t) size);
	return (int)strlen(ret);
    } else {
	return -1;
    }

}
#endif

/*
 *-------------------------------------------------------------------
 *
 * CiphersObjCmd -- list available ciphers







>







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    if (result == TCL_OK) {
	char *ret = (char *) Tcl_GetStringResult(interp);
	strncpy(buf, ret, (size_t) size);
	return (int)strlen(ret);
    } else {
	return -1;
    }
    	verify = verify;
}
#endif

/*
 *-------------------------------------------------------------------
 *
 * CiphersObjCmd -- list available ciphers
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    };
    Tcl_Obj *objPtr;
    SSL_CTX *ctx = NULL;
    SSL *ssl = NULL;
    STACK_OF(SSL_CIPHER) *sk;
    char *cp, buf[BUFSIZ];
    int index, verbose = 0;



    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) {







>
>







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    };
    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) {
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584
	}
    }
    SSL_free(ssl);
    SSL_CTX_free(ctx);

    Tcl_SetObjResult( interp, objPtr);
    return TCL_OK;

}

/*
 *-------------------------------------------------------------------
 *
 * HandshakeObjCmd --
 *







>







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	}
    }
    SSL_free(ssl);
    SSL_CTX_free(ctx);

    Tcl_SetObjResult( interp, objPtr);
    return TCL_OK;
    	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * HandshakeObjCmd --
 *
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606


607
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613
    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 */
    int ret = 1;



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

    chan = Tcl_GetChannel(interp, Tcl_GetStringFromObj(objv[1], NULL), NULL);







>
>







632
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    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 */
    int ret = 1;

    dprintf("Called");

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

    chan = Tcl_GetChannel(interp, Tcl_GetStringFromObj(objv[1], NULL), NULL);
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657
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663
	    Tcl_ResetResult(interp);
	    Tcl_SetErrno(err);

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

	    Tcl_AppendResult(interp, "handshake failed: ", errStr,
		    (char *) NULL);
	    return TCL_ERROR;
	}
    }

    Tcl_SetObjResult(interp, Tcl_NewIntObj(ret));
    return TCL_OK;

}

/*
 *-------------------------------------------------------------------
 *
 * ImportObjCmd --
 *







|
|






>







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	    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;
	}
    }

    Tcl_SetObjResult(interp, Tcl_NewIntObj(ret));
    return TCL_OK;
    	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * ImportObjCmd --
 *
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729
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731
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735
#if defined(NO_TLS1_2)
    int tls1_2 = 0;
#else
    int tls1_2 = 1;
#endif
    int proto = 0;
    int verify = 0, require = 0, request = 1;



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

    chan = Tcl_GetChannel(interp, Tcl_GetStringFromObj(objv[1], NULL), NULL);







>
>







757
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#if defined(NO_TLS1_2)
    int tls1_2 = 0;
#else
    int tls1_2 = 1;
#endif
    int proto = 0;
    int verify = 0, require = 0, request = 1;

    dprintf("Called");

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

    chan = Tcl_GetChannel(interp, Tcl_GetStringFromObj(objv[1], NULL), NULL);
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858


859

860
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    /*
     * 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_SetChannelOption(interp, chan, "-translation", "binary");


    statePtr->self = Tcl_StackChannel(interp, Tls_ChannelType(), (ClientData) statePtr, (TCL_READABLE | TCL_WRITABLE), chan);

    if (statePtr->self == (Tcl_Channel) NULL) {
	/*
	 * No use of Tcl_EventuallyFree because no possible Tcl_Preserve.
	 */
	Tls_Free((char *) statePtr);
	return TCL_ERROR;
    }







>
>

>







889
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    /*
     * 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_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;
    }
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917

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    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_CLOSE);
    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
     */

    Tcl_SetResult(interp, (char *) Tcl_GetChannelName(statePtr->self),
	    TCL_VOLATILE);
    return TCL_OK;

}

/*
 *-------------------------------------------------------------------
 *
 * UnimportObjCmd --
 *







|














>



>







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943
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    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 --
 *
941
942
943
944
945
946
947


948
949
950
951
952
953
954
    ClientData clientData;	/* Not used. */
    Tcl_Interp *interp;
    int objc;
    Tcl_Obj *CONST objv[];
{
    Tcl_Channel chan;		/* The channel to set a mode on. */



    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) {







>
>







983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
    ClientData clientData;	/* Not used. */
    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) {
967
968
969
970
971
972
973

974
975
976
977
978
979
980
    }

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

    return TCL_OK;

}

/*
 *-------------------------------------------------------------------
 *
 * CTX_Init -- construct a SSL_CTX instance
 *







>







1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
    }

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

    return TCL_OK;
    	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * CTX_Init -- construct a SSL_CTX instance
 *
1000
1001
1002
1003
1004
1005
1006


1007
1008
1009
1010
1011
1012
1013
{
    Tcl_Interp *interp = statePtr->interp;
    SSL_CTX *ctx = NULL;
    Tcl_DString ds;
    Tcl_DString ds1;
    int off = 0;
    const SSL_METHOD *method;



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

    /* create SSL context */







>
>







1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
{
    Tcl_Interp *interp = statePtr->interp;
    SSL_CTX *ctx = NULL;
    Tcl_DString ds;
    Tcl_DString ds1;
    int off = 0;
    const SSL_METHOD *method;

    dprintf("Called");

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

    /* create SSL context */
1250
1251
1252
1253
1254
1255
1256


1257
1258
1259
1260
1261
1262
1263
    State *statePtr;
    X509 *peer;
    Tcl_Obj *objPtr;
    Tcl_Channel chan;
    char *channelName, *ciphers;
    int mode;



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

	case 3:
	    if (!strcmp (Tcl_GetString (objv[1]), "-local")) {







>
>







1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
    State *statePtr;
    X509 *peer;
    Tcl_Obj *objPtr;
    Tcl_Channel chan;
    char *channelName, *ciphers;
    int mode;

    dprintf("Called");

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

	case 3:
	    if (!strcmp (Tcl_GetString (objv[1]), "-local")) {
1306
1307
1308
1309
1310
1311
1312

1313
1314
1315
1316
1317
1318
1319
	Tcl_ListObjAppendElement(interp, objPtr,
		Tcl_NewStringObj("cipher", -1));
	Tcl_ListObjAppendElement(interp, objPtr,
		Tcl_NewStringObj(SSL_get_cipher(statePtr->ssl), -1));
    }
    Tcl_SetObjResult( interp, objPtr);
    return TCL_OK;

}

/*
 *-------------------------------------------------------------------
 *
 * VersionObjCmd -- return version string from OpenSSL.
 *







>







1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
	Tcl_ListObjAppendElement(interp, objPtr,
		Tcl_NewStringObj("cipher", -1));
	Tcl_ListObjAppendElement(interp, objPtr,
		Tcl_NewStringObj(SSL_get_cipher(statePtr->ssl), -1));
    }
    Tcl_SetObjResult( interp, objPtr);
    return TCL_OK;
    	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * VersionObjCmd -- return version string from OpenSSL.
 *
1329
1330
1331
1332
1333
1334
1335


1336
1337
1338
1339
1340



1341
1342
1343
1344
1345
1346
1347
VersionObjCmd(clientData, interp, objc, objv)
    ClientData clientData;	/* Not used. */
    Tcl_Interp *interp;
    int objc;
    Tcl_Obj	*CONST objv[];
{
    Tcl_Obj *objPtr;



    objPtr = Tcl_NewStringObj(OPENSSL_VERSION_TEXT, -1);

    Tcl_SetObjResult(interp, objPtr);
    return TCL_OK;



}

/*
 *-------------------------------------------------------------------
 *
 * MiscObjCmd -- misc commands
 *







>
>





>
>
>







1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
VersionObjCmd(clientData, interp, objc, objv)
    ClientData clientData;	/* Not used. */
    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
 *
1359
1360
1361
1362
1363
1364
1365


1366
1367
1368
1369
1370
1371
1372
    Tcl_Interp *interp;
    int objc;
    Tcl_Obj	*CONST objv[];
{
    static CONST84 char *commands [] = { "req", NULL };
    enum command { C_REQ, C_DUMMY };
    int cmd;



    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) {







>
>







1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
    Tcl_Interp *interp;
    int objc;
    Tcl_Obj	*CONST objv[];
{
    static CONST84 char *commands [] = { "req", NULL };
    enum command { C_REQ, C_DUMMY };
    int cmd;

    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) {
1496
1497
1498
1499
1500
1501
1502

1503
1504
1505
1506
1507
1508
1509
	    }
	}
	break;
    default:
	break;
    }
    return TCL_OK;

}

/*
 *-------------------------------------------------------------------
 *
 * Tls_Free --
 *







>







1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
	    }
	}
	break;
    default:
	break;
    }
    return TCL_OK;
    	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * Tls_Free --
 *
1518
1519
1520
1521
1522
1523
1524


1525
1526
1527
1528
1529
1530
1531
 *
 *-------------------------------------------------------------------
 */
void
Tls_Free( char *blockPtr )
{
    State *statePtr = (State *)blockPtr;



    Tls_Clean(statePtr);
    ckfree(blockPtr);
}

/*
 *-------------------------------------------------------------------







>
>







1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
 *
 *-------------------------------------------------------------------
 */
void
Tls_Free( char *blockPtr )
{
    State *statePtr = (State *)blockPtr;

    dprintf("Called");

    Tls_Clean(statePtr);
    ckfree(blockPtr);
}

/*
 *-------------------------------------------------------------------
1541
1542
1543
1544
1545
1546
1547
1548
1549

1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
 *	none
 *
 * Side effects:
 *	Frees all the state
 *
 *-------------------------------------------------------------------
 */
void
Tls_Clean(State *statePtr)

{
    /*
     * 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 */







<
|
>
|



<







1601
1602
1603
1604
1605
1606
1607

1608
1609
1610
1611
1612
1613

1614
1615
1616
1617
1618
1619
1620
 *	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 */
1576
1577
1578
1579
1580
1581
1582


1583
1584
1585
1586
1587
1588
1589
	Tcl_DecrRefCount(statePtr->callback);
	statePtr->callback = NULL;
    }
    if (statePtr->password) {
	Tcl_DecrRefCount(statePtr->password);
	statePtr->password = NULL;
    }


}

/*
 *-------------------------------------------------------------------
 *
 * Tls_Init --
 *







>
>







1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
	Tcl_DecrRefCount(statePtr->callback);
	statePtr->callback = NULL;
    }
    if (statePtr->password) {
	Tcl_DecrRefCount(statePtr->password);
	statePtr->password = NULL;
    }

    dprintf("Returning");
}

/*
 *-------------------------------------------------------------------
 *
 * Tls_Init --
 *
1597
1598
1599
1600
1601
1602
1603

1604


1605
1606
1607
1608
1609
1610
1611
 *
 *-------------------------------------------------------------------
 */

int Tls_Init(Tcl_Interp *interp) {
	const char tlsTclInitScript[] = {
#include "tls.tcl.h"

	};



	/*
	 * We only support Tcl 8.4 or newer
	 */
	if (
#ifdef USE_TCL_STUBS
	    Tcl_InitStubs(interp, "8.4", 0)







>

>
>







1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
 *
 *-------------------------------------------------------------------
 */

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)
1652
1653
1654
1655
1656
1657
1658

1659
1660
1661
1662
1663
1664
1665
 *	Result:
 *		A standard Tcl error code.
 *
 *------------------------------------------------------*
 */

int Tls_SafeInit(Tcl_Interp *interp) {

	return(Tls_Init(interp));
}

/*
 *------------------------------------------------------*
 *
 *	TlsLibInit --







>







1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
 *	Result:
 *		A standard Tcl error code.
 *
 *------------------------------------------------------*
 */

int Tls_SafeInit(Tcl_Interp *interp) {
	dprintf("Called");
	return(Tls_Init(interp));
}

/*
 *------------------------------------------------------*
 *
 *	TlsLibInit --
1697
1698
1699
1700
1701
1702
1703

1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715

1716
1717


1718
1719
1720
1721
1722
1723
1724
1725

1726

1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738


1739
1740
1741
1742
1743
1744
1745

		CRYPTO_set_locking_callback(NULL);
		CRYPTO_set_id_callback(NULL);

		if (locks) {
			free(locks);
			locks = NULL;

		}
#endif
		initialized = 0;

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

		return(TCL_OK);
	}

	if (initialized) {

		return(status);
	}



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

#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
	num_locks = CRYPTO_num_locks();

	locks = malloc(sizeof(*locks) * num_locks);


	CRYPTO_set_locking_callback(CryptoThreadLockCallback);
	CRYPTO_set_id_callback(CryptoThreadIdCallback);
#endif

	if (SSL_library_init() != 1) {
		status = TCL_ERROR;
		goto done;
	}

	SSL_load_error_strings();
	ERR_load_crypto_strings();



#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
	 */







>












>


>
>








>

>












>
>







1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818

		CRYPTO_set_locking_callback(NULL);
		CRYPTO_set_id_callback(NULL);

		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)
	num_locks = CRYPTO_num_locks();
	locksCount = num_locks;
	locks = malloc(sizeof(*locks) * num_locks);
	memset(locks, 0, sizeof(*locks) * num_locks);

	CRYPTO_set_locking_callback(CryptoThreadLockCallback);
	CRYPTO_set_id_callback(CryptoThreadIdCallback);
#endif

	if (SSL_library_init() != 1) {
		status = TCL_ERROR;
		goto done;
	}

	SSL_load_error_strings();
	ERR_load_crypto_strings();

	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
	 */

Modified tlsBIO.c from [4c45fdf356] to [e6c5524fec].

37
38
39
40
41
42
43








44
45
46
47
48
49
50
51
52
53
54
55
56
































57


58





59
60
61

62
63
64
65
66
67
68

69
70
71
72
73
74
75


76

77
78
79




80
81

82









83
84


85
86

87


88

89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109

110
111
112
113
114




115
116
117

118





119
120
121


122
123
124
125
126

127


128

129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
static long BioCtrl _ANSI_ARGS_((BIO *h, int cmd, long arg1, void *ptr));
static int BioNew   _ANSI_ARGS_((BIO *h));
static int BioFree  _ANSI_ARGS_((BIO *h));

BIO *BIO_new_tcl(State *statePtr, int flags) {
	BIO *bio;
	static BIO_METHOD *BioMethods = NULL;









	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);
	}

































	bio = BIO_new(BioMethods);








	BIO_set_data(bio, statePtr);
	BIO_set_init(bio, 1);
	BIO_set_shutdown(bio, flags);


	return(bio);
}

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


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

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

	ret = Tcl_WriteRaw(chan, buf, bufLen);



	dprintf("[%p] BioWrite(%d) -> %d [%d.%d]", (void *) chan, bufLen, ret, Tcl_Eof(chan), Tcl_GetErrno());


	BIO_clear_flags(bio, BIO_FLAGS_WRITE | BIO_FLAGS_SHOULD_RETRY);





	if (ret == 0) {
		if (!Tcl_Eof(chan)) {

			BIO_set_retry_write(bio);









			ret = -1;
		}


	}


	if (BIO_should_read(bio)) {


		BIO_set_retry_read(bio);

	}

	return(ret);
}

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

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

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

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

	ret = Tcl_ReadRaw(chan, buf, bufLen);

	tclEofChan = Tcl_Eof(chan);


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

	BIO_clear_flags(bio, BIO_FLAGS_READ | BIO_FLAGS_SHOULD_RETRY);





	if (ret == 0) {
		if (!tclEofChan) {
			dprintf("Got 0 from Tcl_Read or Tcl_ReadRaw, and EOF is not set -- ret == -1 now");

			BIO_set_retry_read(bio);





			ret = -1;
		} else {
			dprintf("Got 0 from Tcl_Read or Tcl_ReadRaw, and EOF is set");


		}
	} else {
		dprintf("Got non-zero from Tcl_Read or Tcl_ReadRaw; ret == %i", ret);
	}


	if (BIO_should_write(bio)) {


		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));

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

	switch (cmd) {
		case BIO_CTRL_RESET:
			dprintf("Got BIO_CTRL_RESET");
			num = 0;







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static long BioCtrl _ANSI_ARGS_((BIO *h, int cmd, long arg1, void *ptr));
static int BioNew   _ANSI_ARGS_((BIO *h));
static int BioFree  _ANSI_ARGS_((BIO *h));

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);
}

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 %i from Tcl_WriteRaw, and EOF is set; ret = -1", ret);
		Tcl_SetErrno(ECONNRESET);
		ret = -1;
	} 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");
			ret = 0;
		} else {
			dprintf("It's an unepxected error: %s/%i", Tcl_ErrnoMsg(tclErrno), tclErrno);
			Tcl_SetErrno(ECONNRESET);
			ret = -1;
		}
	} else {
		dprintf("Successfully wrote some data");
	}

	if (ret != -1) {
		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 %i from Tcl_Read or Tcl_ReadRaw, and EOF is set; ret = -1", ret);
		Tcl_SetErrno(ECONNRESET);
		ret = -1;
	} 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");
			ret = 0;
		} else {
			dprintf("It's an unepxected error: %s/%i", Tcl_ErrnoMsg(tclErrno), tclErrno);
			Tcl_SetErrno(ECONNRESET);
			ret = -1;
		}
	} else {
		dprintf("Successfully read some data");
	}

	if (ret != -1) {
		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%x, %p)", (void *) bio, (unsigned int) cmd, (unsigned int) num, (void *) ptr);

	switch (cmd) {
		case BIO_CTRL_RESET:
			dprintf("Got BIO_CTRL_RESET");
			num = 0;
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		case BIO_CTRL_FLUSH:
			dprintf("Got BIO_CTRL_FLUSH");
			ret = ((Tcl_WriteRaw(chan, "", 0) >= 0) ? 1 : -1);
			dprintf("BIO_CTRL_FLUSH returning value %li", ret);
			break;
		default:
			dprintf("Got unknown control command (%i)", cmd);
			ret = 0;
			break;
	}

	return(ret);
}

static int BioNew(BIO *bio) {







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		case BIO_CTRL_FLUSH:
			dprintf("Got BIO_CTRL_FLUSH");
			ret = ((Tcl_WriteRaw(chan, "", 0) >= 0) ? 1 : -1);
			dprintf("BIO_CTRL_FLUSH returning value %li", ret);
			break;
		default:
			dprintf("Got unknown control command (%i)", cmd);
			ret = -2;
			break;
	}

	return(ret);
}

static int BioNew(BIO *bio) {

Modified tlsIO.c from [9eaf78f936] to [b42f920022].

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 *	0 if successful, the value of Tcl_GetErrno() if failed.
 *
 * Side effects:
 *	Closes the socket of the channel.
 *
 *-------------------------------------------------------------------
 */
static int
TlsCloseProc(ClientData instanceData,	/* The socket to close. */
             Tcl_Interp *interp)	/* For error reporting - unused. */
{
    State *statePtr = (State *) instanceData;

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

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



    return TCL_OK;



}

/*
 *-------------------------------------------------------------------
 *
 * TlsInputProc --
 *







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 *	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);

	dprintf("Returning TCL_OK");

	return(TCL_OK);

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

/*
 *-------------------------------------------------------------------
 *
 * TlsInputProc --
 *
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 *
 * Side effects:
 *	Reads input from the input device of the channel.
 *
 *-------------------------------------------------------------------
 */

static int
TlsInputProc(ClientData instanceData,	/* Socket state. */
	char *buf,			/* Where to store data read. */
	int bufSize,			/* How much space is available
					 * in the buffer? */
	int *errorCodePtr)		/* Where to store error code. */
{
    State *statePtr = (State *) instanceData;
    int bytesRead;			/* How many bytes were read? */



    *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");

       bytesRead = 0;
       goto input;
    }

    if (!SSL_is_init_finished(statePtr->ssl)) {
        dprintf("Calling Tls_WaitForConnect");
	bytesRead = Tls_WaitForConnect(statePtr, errorCodePtr);
	if (bytesRead <= 0) {
            dprintf("Got an error (bytesRead = %i)", bytesRead);

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

    }

    if (statePtr->flags & TLS_TCL_INIT) {
	statePtr->flags &= ~(TLS_TCL_INIT);
    }

    /*
     * 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);

    if (bytesRead < 0) {
	int err = SSL_get_error(statePtr->ssl, bytesRead);

	if (err == SSL_ERROR_SSL) {
	    Tls_Error(statePtr, TCLTLS_SSL_ERROR(statePtr->ssl, bytesRead));
	    *errorCodePtr = ECONNABORTED;
	} else if (BIO_should_retry(statePtr->bio)) {
	    dprintf("RE! ");
	    *errorCodePtr = EAGAIN;

	} else {






	    *errorCodePtr = Tcl_GetErrno();


	    if (*errorCodePtr == ECONNRESET) {
		/* Soft EOF */
		*errorCodePtr = 0;
		bytesRead = 0;

	    }
	}
    }
    input:
    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,	/* Socket state. */
              CONST char *buf,		/* The data buffer. */
              int toWrite,		/* How many bytes to write? */
              int *errorCodePtr)	/* Where to store error code. */
{
    State *statePtr = (State *) instanceData;
    int written, err;

    *errorCodePtr = 0;

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


    if (statePtr->flags & TLS_TCL_CALLBACK) {
       /* don't process any bytes while verify callback is running */
       written = -1;
       *errorCodePtr = EAGAIN;
       goto output;

    }

    if (!SSL_is_init_finished(statePtr->ssl)) {
        dprintf("Calling Tls_WaitForConnect");
	written = Tls_WaitForConnect(statePtr, errorCodePtr);
	if (written <= 0) {
            dprintf("Tls_WaitForConnect returned %i (err = %i)", written, *errorCodePtr);

	    goto output;
	}
    }
    if (statePtr->flags & TLS_TCL_INIT) {
	statePtr->flags &= ~(TLS_TCL_INIT);
    }
    if (toWrite == 0) {
	dprintf("zero-write");
	BIO_flush(statePtr->bio);





	written = 0;


	goto output;




    } else {
	/*
	 * 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);
    }
    if (written <= 0) {
	switch ((err = SSL_get_error(statePtr->ssl, written))) {

	    case SSL_ERROR_NONE:
		if (written < 0) {
		    written = 0;
		}
		break;
	    case SSL_ERROR_WANT_WRITE:
		dprintf(" write W BLOCK");
		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;
		break;
	    case SSL_ERROR_SYSCALL:
		*errorCodePtr = Tcl_GetErrno();
		dprintf(" [%d] syscall errr: %d",
			written, *errorCodePtr);
		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;
	}
    }
    output:
    dprintf("Output(%d) -> %d", toWrite, written);
    return written;
}

/*
 *-------------------------------------------------------------------
 *
 * TlsGetOptionProc --
 *







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 *
 * Side effects:
 *	Reads input from the input device of the channel.
 *
 *-------------------------------------------------------------------
 */


static int TlsInputProc(ClientData instanceData, char *buf, int bufSize, int *errorCodePtr) {





	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);
	if (tlsConnect < 0) {
		dprintf("Got an error (bytesRead = %i)", bytesRead);

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


		return(0);
	}

	if (statePtr->flags & TLS_TCL_INIT) {
		statePtr->flags &= ~(TLS_TCL_INIT);
	}

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

	switch (err) {
		case SSL_ERROR_NONE:
			dprintBuffer(buf, bytesRead);
			break;
		case SSL_ERROR_SSL:
			Tls_Error(statePtr, TCLTLS_SSL_ERROR(statePtr->ssl, bytesRead));
			*errorCodePtr = ECONNABORTED;
			break;
		case SSL_ERROR_SYSCALL:
			dprintf("I/O error reading, treating it as EOF");

			*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) {




	State *statePtr = (State *) instanceData;
	int written, err;

	*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");
	written = Tls_WaitForConnect(statePtr, errorCodePtr);
	if (written < 0) {
		dprintf("Tls_WaitForConnect returned %i (err = %i)", written, *errorCodePtr);

		return(-1);
	}




	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(" write W BLOCK");
			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;
			break;
		case SSL_ERROR_SYSCALL:
			*errorCodePtr = Tcl_GetErrno();
			dprintf(" [%d] syscall errr: %d", written, *errorCodePtr);

			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);
}

/*
 *-------------------------------------------------------------------
 *
 * TlsGetOptionProc --
 *
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					 * 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);
   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) {
        /*







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					 * 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) {
        /*
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    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) { 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.
	 */

	downChan = Tls_GetParent(statePtr);


	(Tcl_GetChannelType(downChan))
	    ->watchProc(Tcl_GetChannelInstanceData(downChan), mask);

	/*
	 * Management of the internal timer.
	 */

	if (statePtr->timer != (Tcl_TimerToken) NULL) {

	    Tcl_DeleteTimerHandler(statePtr->timer);
	    statePtr->timer = (Tcl_TimerToken) NULL;
	}

	if ((mask & TCL_READABLE) && Tcl_InputBuffered(statePtr->self) > 0) {
	    /*
	     * There is interest in readable events and we actually have
	     * data waiting, so generate a timer to flush that.
	     */

	    statePtr->timer = Tcl_CreateTimerHandler(TLS_TCL_DELAY,
		    TlsChannelHandlerTimer, (ClientData) statePtr);
	}
}

/*
 *-------------------------------------------------------------------







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    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) {
	    /*
	     * 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);
	}
}

/*
 *-------------------------------------------------------------------
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 *	The appropriate Tcl_File or NULL if not present. 
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------
 */
static int
TlsGetHandleProc(ClientData instanceData,	/* The socket state. */
                 int direction,		/* Which Tcl_File to retrieve? */
                 ClientData *handlePtr)	/* Where to store the handle.  */
{
    State *statePtr = (State *) instanceData;

    return Tcl_GetChannelHandle(Tls_GetParent(statePtr), 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(instanceData, mask)
    ClientData	   instanceData; /* The state of the notified transformation */
    int		   mask;       /* The mask of occuring events */
{
    State *statePtr = (State *) instanceData;


    /*
     * An event occured 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;
    }

    if ((statePtr->flags & TLS_TCL_INIT) && !SSL_is_init_finished(statePtr->ssl)) {
	int errorCode = 0;

        dprintf("Calling Tls_WaitForConnect");

	if (Tls_WaitForConnect(statePtr, &errorCode) <= 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 --







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 *	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 occured 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) < 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 --
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 *
 *	Result:
 *		None.
 *
 *------------------------------------------------------*
 */

static void
TlsChannelHandlerTimer (clientData)
ClientData clientData; /* Transformation to query */
{
    State *statePtr = (State *) clientData;
    int mask = 0;



    statePtr->timer = (Tcl_TimerToken) NULL;

    if (BIO_wpending(statePtr->bio)) {


	mask |= TCL_WRITABLE;
    }

    if (BIO_pending(statePtr->bio)) {


	mask |= TCL_READABLE;
    }


    Tcl_NotifyChannel(statePtr->self, mask);




}

/*
 *------------------------------------------------------*
 *
 *	Tls_WaitForConnect --
 *
 *	Sideeffects:
 *		Issues SSL_accept or SSL_connect
 *
 *	Result:
 *		None.
 *
 *------------------------------------------------------*
 */
int Tls_WaitForConnect(State *statePtr, int *errorCodePtr) {

    int err;


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








    if (statePtr->flags & TLS_TCL_HANDSHAKE_FAILED) {
        /*
         * We choose ECONNRESET over ECONNABORTED here because some server
         * side code, on the wiki for example, sets up a read handler that
         * does a read and if eof closes the channel. There is no catch/try
         * around the reads so exceptions will result in potentially many
         * dangling channels hanging around that should have been closed.
         * (Backgroun: ECONNABORTED maps to a Tcl exception and 
         * ECONNRESET maps to graceful EOF).
         */
        *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);
	}

	/*SSL_write(statePtr->ssl, (char*)&err, 0);	HACK!!! */
	if (err > 0) {
            dprintf("That seems to have gone okay");

	    BIO_flush(statePtr->bio);
	} else {





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

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







	    if (rc == SSL_ERROR_SSL) {


		Tls_Error(statePtr,
			(char *)ERR_reason_error_string(ERR_get_error()));
                statePtr->flags |= TLS_TCL_HANDSHAKE_FAILED;



		*errorCodePtr = ECONNABORTED;
		return -1;

	    } else if (BIO_should_retry(statePtr->bio)) {
		if (statePtr->flags & TLS_TCL_ASYNC) {
		    dprintf("E! ");

		    *errorCodePtr = EAGAIN;

		    return -1;
		} else {


		    continue;
		}

	    } else if (err <= 0) {
                if (SSL_in_init(statePtr->ssl)) {
                    dprintf("SSL_in_init() is true");

                }

                if (Tcl_Eof(statePtr->self)) {
                    dprintf("Error = 0 and EOF is set");


                    if (rc != SSL_ERROR_SYSCALL) {

                        dprintf("Error from some reason other than our BIO, returning 0");



                        return 0;



                    }


                }
		dprintf("CR! ");
                statePtr->flags |= TLS_TCL_HANDSHAKE_FAILED;
		*errorCodePtr = ECONNRESET;
		return -1;














	    }


	    if (statePtr->flags & TLS_TCL_SERVER) {


		err = SSL_get_verify_result(statePtr->ssl);
		if (err != X509_V_OK) {

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

	    *errorCodePtr = Tcl_GetErrno();
	    dprintf("ERR(%d, %d) ", rc, *errorCodePtr);
	    return -1;

	}
	dprintf("R0! ");
	return 1;

    }

}

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






	return(Tcl_GetStackedChannel(statePtr->self));
}







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 *
 *	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;
}

/*
 *------------------------------------------------------*
 *
 *	Tls_WaitForConnect --
 *
 *	Sideeffects:
 *		Issues SSL_accept or SSL_connect
 *
 *	Result:
 *		None.
 *
 *------------------------------------------------------*
 */
int Tls_WaitForConnect(State *statePtr, int *errorCodePtr) {
	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) {
		/*
		 * We choose ECONNRESET over ECONNABORTED here because some server
		 * side code, on the wiki for example, sets up a read handler that
		 * does a read and if eof closes the channel. There is no catch/try
		 * around the reads so exceptions will result in potentially many
		 * dangling channels hanging around that should have been closed.
		 * (Backgroun: ECONNABORTED maps to a Tcl exception and 
		 * ECONNRESET maps to graceful EOF).
		 */
		*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();
			dprintf("I/O error occured");

			if (backingError == 0 && err == 0) {
				dprintf("EOF reached")
			}

			statePtr->flags |= TLS_TCL_HANDSHAKE_FAILED;
			*errorCodePtr = ECONNRESET;
			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);
}

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));
}

Modified tlsInt.h from [fe15261c75] to [a8396fe975].

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 */
#ifndef _TLSINT_H
#define _TLSINT_H

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


#ifdef __WIN32__
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <wincrypt.h> /* OpenSSL needs this on Windows */
#endif








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 */
#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

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

#ifdef TCLEXT_TCLTLS_DEBUG

#define dprintf(...) { fprintf(stderr, "%s:%i:", __func__, __LINE__); fprintf(stderr, __VA_ARGS__); fprintf(stderr, "\n"); }

































#else
#define dprintf(...) if (0) { fprintf(stderr, __VA_ARGS__); }


#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_DELAY (5)

/*
 * This structure describes the per-instance state
 * of an ssl channel.
 *
 * The SSL processing context is maintained here, in the ClientData







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#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
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#endif /* Tcl_GetStackedChannel */
#endif /* USE_TCL_STUBS */

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

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);

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



#endif /* _TLSINT_H */







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#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);

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

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

#endif /* _TLSINT_H */

Modified tlsX509.c from [9fff18dbef] to [09234d9be9].

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	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;
	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;
	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;
	BIO_flush(bio);

        if (PEM_write_bio_X509(bio, cert)) {
            n = BIO_read(bio, certStr, min(BIO_pending(bio), BUFSIZ - 1));
            n = max(n, 0);
            certStr[n] = 0;
            BIO_flush(bio);
        }

	BIO_free(bio);
    }

    strcpy( notBefore, ASN1_UTCTIME_tostr( X509_get_notBefore(cert) ));
    strcpy( notAfter, ASN1_UTCTIME_tostr( X509_get_notAfter(cert) ));







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	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)) {
            n = BIO_read(bio, certStr, min(BIO_pending(bio), BUFSIZ - 1));
            n = max(n, 0);
            certStr[n] = 0;
            (void)BIO_flush(bio);
        }

	BIO_free(bio);
    }

    strcpy( notBefore, ASN1_UTCTIME_tostr( X509_get_notBefore(cert) ));
    strcpy( notAfter, ASN1_UTCTIME_tostr( X509_get_notAfter(cert) ));