Changes On Branch e5c9bfe50fb4ebeb
Bounty program for improvements to Tcl and certain Tcl packages.

Changes In Branch wip-fix-io-layer Through [e5c9bfe50f] Excluding Merge-Ins

This is equivalent to a diff from 387697ce68 to e5c9bfe50f

2016-12-13
05:12
Merged in work for the I/O layer being updated check-in: 2f45dac5f7 user: rkeene tags: trunk
03:27
Silence warnings about ignoring this return value by explicitly ignoring it check-in: 41f972bfbf 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
22:40
Merged in trunk check-in: 83a3aff031 user: rkeene tags: wip-fix-io-layer
22:39
Enabled more warnings check-in: b255cfbc6b user: rkeene tags: trunk

Modified configure.in from [6606614e6e] to [a0a0ea8c33].

119
120
121
122
123
124
125












126
127
128
129
130
131
132
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






+
+
+
+
+
+
+
+
+
+
+
+







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

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

14
15
16
17
18
19
20

21
22
23
24
25
26
27
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28






+







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].

164
165
166
167
168
169
170
171

172
173
174
175
176
177
178
164
165
166
167
168
169
170

171
172
173
174
175
176
177
178






-
+







	    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} {
		    -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
318
319
320
321
322
323
324
325

326
327
328
329
330
331
332
318
319
320
321
322
323
324

325
326
327
328
329
330
331
332






-
+







	puts ready
	vwait x
	after cancel $timer
	close $f
	puts $x
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r]
    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
360
361
362
363
364
365
366
367

368
369
370
371
372
373
374
360
361
362
363
364
365
366

367
368
369
370
371
372
373
374






-
+







	}
	puts ready
	vwait x
	after cancel $timer
	close $f
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r]
    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]}
400
401
402
403
404
405
406
407

408
409
410
411
412
413
414
400
401
402
403
404
405
406

407
408
409
410
411
412
413
414






-
+







	}
	puts ready
	vwait x
	after cancel $timer
	close $f
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r]
    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
438
439
440
441
442
443
444
445

446
447
448
449
450
451
452
438
439
440
441
442
443
444

445
446
447
448
449
450
451
452






-
+







	}
	puts ready
	vwait x
	after cancel $timer
	close $f
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r]
    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
475
476
477
478
479
480
481
482

483
484
485
486
487
488
489
475
476
477
478
479
480
481

482
483
484
485
486
487
488
489






-
+







	}
	puts ready
	vwait x
	after cancel $timer
	close $f
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r]
    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
531
532
533
534
535
536
537
538

539
540
541
542
543
544
545
531
532
533
534
535
536
537

538
539
540
541
542
543
544
545






-
+







	puts ready
	vwait x
	after cancel $timer
	close $f
	puts done
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r]
    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]
578
579
580
581
582
583
584
585

586
587
588
589
590
591
592
578
579
580
581
582
583
584

585
586
587
588
589
590
591
592






-
+







	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]
    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"
703
704
705
706
707
708
709
710

711
712
713
714
715
716
717
703
704
705
706
707
708
709

710
711
712
713
714
715
716
717






-
+







	puts ready
	vwait x
	after cancel $timer
	close $f
	puts $x
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r]
    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
    }
730
731
732
733
734
735
736
737

738
739
740
741
742
743
744
730
731
732
733
734
735
736

737
738
739
740
741
742
743
744






-
+







    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+]
    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
779
780
781
782
783
784
785
786

787
788
789
790
791
792
793
794
795
796
797
798
799
800
801

802
803

804
805

806
807
808
809
810
811
812
779
780
781
782
783
784
785

786
787
788
789
790
791
792
793
794
795
796
797
798
799
800

801
802

803
804

805
806
807
808
809
810
811
812






-
+














-
+

-
+

-
+







	after cancel $t2
	vwait x
	after cancel $t3
	close $s
	puts $x
    }
    close $f
    set f [open "|[list $::tcltest::tcltest script]" r+]
    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,s1
	puts $s1 hello,tlsIO-3.2,s1
	gets $s1
	puts $s2 hello,s2
	puts $s2 hello,tlsIO-3.2,s2
	gets $s2
	puts $s3 hello,s3
	puts $s3 hello,tlsIO-3.2,s3
	gets $s3
    }
    close $s1
    close $s2
    close $s3
    lappend x [gets $f]
    close $f
830
831
832
833
834
835
836
837

838
839

840
841

842
843
844
845
846
847
848
830
831
832
833
834
835
836

837
838

839
840

841
842
843
844
845
846
847
848






-
+

-
+

-
+







	    gets $s
	}
	close $s
	puts bye
	gets stdin
    }
    close $f
    set p1 [open "|[list $::tcltest::tcltest script]" r+]
    set p1 [open "|[list $::tcltest::tcltest script] 2> /dev/null" r+]
    fconfigure $p1 -buffering line
    set p2 [open "|[list $::tcltest::tcltest script]" r+]
    set p2 [open "|[list $::tcltest::tcltest script] 2> /dev/null" r+]
    fconfigure $p2 -buffering line
    set p3 [open "|[list $::tcltest::tcltest script]" r+]
    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
928
929
930
931
932
933
934
935

936
937
938
939
940
941
942
928
929
930
931
932
933
934

935
936
937
938
939
940
941
942






-
+







    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+]
    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]
966
967
968
969
970
971
972
973

974
975
976
977
978
979
980
966
967
968
969
970
971
972

973
974
975
976
977
978
979
980






-
+







	}
	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]
    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
999
1000
1001
1002
1003
1004
1005
1006

1007
1008
1009
1010
1011
1012
1013
999
1000
1001
1002
1003
1004
1005

1006
1007
1008
1009
1010
1011
1012
1013






-
+







	}
	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]
    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
1449
1450
1451
1452
1453
1454
1455
1456

1457
1458

1459
1460

1461
1462
1463
1464
1465
1466
1467
1449
1450
1451
1452
1453
1454
1455

1456
1457

1458
1459

1460
1461
1462
1463
1464
1465
1466
1467






-
+

-
+

-
+







	    $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
	puts $s1 hello,tlsIO-11.7,s1
	gets $s1
	puts $s2 hello,s2
	puts $s2 hello,tlsIO-11.7,s2
	gets $s2
	puts $s3 hello,s3
	puts $s3 hello,tlsIO-11.7,s3
	gets $s3
    }
    close $s1
    close $s2
    close $s3
    sendCommand {close $socket10_9_test_server}
    set i
2051
2052
2053
2054
2055
2056
2057





2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075






+
+
+
+
+













               -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 [87308823ff].

151
152
153
154
155
156
157


158
159
160
161
162
163
164
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166






+
+







 */
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
337
338
339
340
341
342
343


344
345
346
347
348
349
350
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354






+
+







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

404
405
406
407
408
409
410


411
412
413
414
415
416
417
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423






+
+







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);
476
477
478
479
480
481
482


483
484
485
486
487
488
489
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497






+
+







    };
    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) {
601
602
603
604
605
606
607


608
609
610
611
612
613
614
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624






+
+







    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);
    if (chan == (Tcl_Channel) NULL) {
642
643
644
645
646
647
648
649
650


651
652
653
654
655
656
657
652
653
654
655
656
657
658


659
660
661
662
663
664
665
666
667






-
-
+
+







	    Tcl_ResetResult(interp);
	    Tcl_SetErrno(err);

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

	    Tcl_AppendResult(interp, "handshake failed: ", errStr,
		    (char *) NULL);
	    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;
}
722
723
724
725
726
727
728


729
730
731
732
733
734
735
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747






+
+







#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);
852
853
854
855
856
857
858


859

860
861
862
863
864
865
866
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881






+
+

+







    /*
     * 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;
    }
896
897
898
899
900
901
902
903

904
905
906
907
908
909
910
911
912
913
914
915
916
917

918
919
920
921
922
923
924
911
912
913
914
915
916
917

918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940






-
+














+







    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->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;
}

/*
 *-------------------------------------------------------------------
940
941
942
943
944
945
946


947
948
949
950
951
952
953
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971






+
+







UnimportObjCmd(clientData, interp, objc, objv)
    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);
1000
1001
1002
1003
1004
1005
1006


1007
1008
1009
1010
1011
1012
1013
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033






+
+







{
    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
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285






+
+







    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")) {
1329
1330
1331
1332
1333
1334
1335


1336
1337
1338
1339
1340
1341
1342
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366






+
+







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;
}

1359
1360
1361
1362
1363
1364
1365


1366
1367
1368
1369
1370
1371
1372
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398






+
+







    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) {
1518
1519
1520
1521
1522
1523
1524


1525
1526
1527
1528
1529
1530
1531
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559






+
+







 *
 *-------------------------------------------------------------------
 */
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
1569
1570
1571
1572
1573
1574
1575



1576
1577
1578
1579
1580
1581

1582
1583
1584
1585
1586
1587
1588






-
-
-
+
+
+



-







 *	none
 *
 * Side effects:
 *	Frees all the state
 *
 *-------------------------------------------------------------------
 */
void
Tls_Clean(State *statePtr)
{
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
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618






+
+







	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
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643






+

+
+







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

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
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698






+







 *	Result:
 *		A standard Tcl error code.
 *
 *------------------------------------------------------*
 */

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

/*
 *------------------------------------------------------*
 *
 *	TlsLibInit --
1709
1710
1711
1712
1713
1714
1715

1716
1717


1718
1719
1720
1721
1722
1723
1724
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760






+


+
+







		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)
1732
1733
1734
1735
1736
1737
1738


1739
1740
1741
1742
1743
1744
1745
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783






+
+







	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 [1579a1d145].

36
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
36
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
154
155
156
157
158
159
160
161
162

163
164
165
166
167
168
169
170
171
172
173


174
175

176
177
178

179
180
181
182
183
184
185
186
187




188
189
190
191
192
193
194
195
196
197
198
199
200
201
202

203
204
205
206
207
208
209
210






+
+

+
+
+
+













+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
-
-
+
+
+
+
+
+
+
+
+

-

+







+

-
+

-
+



+
-
+
+




-
-
+
+
+

+
+
+















-
+

-
+









-
+



+
+
+
+
+
+

-
-
+
+
-
+


-
+
+
+
+





-
-
-
-















-
+







static int BioPuts  _ANSI_ARGS_((BIO *h, CONST char *str));
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;
	Tcl_Channel parentChannel;
	const Tcl_ChannelType *parentChannelType;
	static BIO_METHOD *BioMethods = NULL;
	void *parentChannelFdIn_p, *parentChannelFdOut_p;
	int parentChannelFdIn, parentChannelFdOut, parentChannelFd;
	int validParentChannelFd;
	int tclGetChannelHandleRet;

	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(BioMethods);

		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_init(bio, 1);
	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;

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

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

	ret = Tcl_WriteRaw(chan, buf, bufLen);

	tclEofChan = Tcl_Eof(chan);
	dprintf("[%p] BioWrite(%d) -> %d [%d.%d]", (void *) chan, bufLen, ret, Tcl_Eof(chan), 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 (ret == 0) {
		if (!Tcl_Eof(chan)) {
			BIO_set_retry_write(bio);
		if (tclEofChan) {
			dprintf("Unable to write bytes and EOF is set, returning in failure");
			Tcl_SetErrno(ECONNRESET);
			ret = -1;
		} else {
			dprintf("Unable to write bytes but we do not have EOF set... will retry");
			BIO_set_retry_write(bio);
		}
	}

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

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

	dprintf("[%p] BioRead(%d) -> %d [tclEof=%d; tclErrno=%d]", (void *) chan, bufLen, ret, tclEofChan, Tcl_GetErrno());
	dprintf("[chan=%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 (BIO_should_write(bio)) {
		dprintf("Setting should retry write flag");

		BIO_set_retry_write(bio);
	}

	if (ret == 0) {
		if (!tclEofChan) {
			dprintf("Got 0 from Tcl_Read or Tcl_ReadRaw, and EOF is not set -- ret == -1 now");
		if (tclEofChan) {
			dprintf("Got 0 from Tcl_Read or Tcl_ReadRaw, and EOF is set; ret = -1");
			BIO_set_retry_read(bio);
			Tcl_SetErrno(ECONNRESET);
			ret = -1;
		} else {
			dprintf("Got 0 from Tcl_Read or Tcl_ReadRaw, and EOF is set");
			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);
			ret = 0;
		}
	} 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));
	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;
196
197
198
199
200
201
202
203

204
205
206
207
208
209
210
253
254
255
256
257
258
259

260
261
262
263
264
265
266
267






-
+







		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;
			ret = -2;
			break;
	}

	return(ret);
}

static int BioNew(BIO *bio) {

Modified tlsIO.c from [9eaf78f936] to [0f85acc9f6].

166
167
168
169
170
171
172



173
174
175
176
177
178
179
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182






+
+
+







{
    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;
}

/*
 *-------------------------------------------------------------------
 *
 * TlsInputProc --
188
189
190
191
192
193
194
195
196

197
198
199
200
201
202
203




204
205

206
207

208
209
210
211



212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227

228
229
230
231









































232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247

248
249
250
251


252
253
254
255
256




257
258

259
260
261


262
263
264
265
266




267
268
269
270
271



272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293

294
295
296
297
298
299


300
301

302
303


304
305
306
307
308
309
310






311
312
313

314
315
316


317
318

319
320

321
322
323
324
325
326
327
328
329








330
331
332
333
334
335
336
337
338
339
340
341
342
343

344
345

346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368























369
370
371
372
373
374
375
376
377
378
379










380
381
382
383
384



385
386
387
388
389
390
391
191
192
193
194
195
196
197


198







199
200
201
202
203

204
205

206
207



208
209
210
211














212
213




214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255















256




257
258





259
260
261
262


263



264
265





266
267
268
269





270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292


293






294
295
296

297
298

299
300
301






302
303
304
305
306
307
308


309
310


311
312
313

314
315

316









317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337

338


339























340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362











363
364
365
366
367
368
369
370
371
372
373




374
375
376
377
378
379
380
381
382
383






-
-
+
-
-
-
-
-
-
-
+
+
+
+

-
+

-
+

-
-
-
+
+
+

-
-
-
-
-
-
-
-
-
-
-
-
-
-

+
-
-
-
-
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+
-
-
-
-
+
+
-
-
-
-
-
+
+
+
+
-
-
+
-
-
-
+
+
-
-
-
-
-
+
+
+
+
-
-
-
-
-
+
+
+




















-
-
+
-
-
-
-
-
-
+
+

-
+

-
+
+

-
-
-
-
-
-
+
+
+
+
+
+

-
-
+

-
-
+
+

-
+

-
+
-
-
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+













-
+
-
-
+
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
-
-
-
-
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
+

-
-
-
-
+
+
+







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

static int
TlsInputProc(ClientData instanceData,	/* Socket state. */
static int TlsInputProc(ClientData instanceData, char *buf, int bufSize, int *errorCodePtr) {
	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? */
	State *statePtr = (State *) instanceData;
	int bytesRead;
	int tlsConnect;
	int err;

    *errorCodePtr = 0;
	*errorCodePtr = 0;

    dprintf("BIO_read(%d)", bufSize);
	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");
	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;
		return(0);
	    }
	    goto input;
	}
    }
	}

	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(bytesRead);
	}

	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;
	}

    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();
	switch (err) {
    bytesRead = BIO_read(statePtr->bio, buf, bufSize);
    dprintf("BIO_read -> %d", bytesRead);

    if (bytesRead < 0) {
		case SSL_ERROR_NONE:
			dprintBuffer(buf, bytesRead);
	int err = SSL_get_error(statePtr->ssl, bytesRead);

	if (err == SSL_ERROR_SSL) {
	    Tls_Error(statePtr, TCLTLS_SSL_ERROR(statePtr->ssl, bytesRead));
	    *errorCodePtr = ECONNABORTED;
			break;
		case SSL_ERROR_SSL:
			Tls_Error(statePtr, TCLTLS_SSL_ERROR(statePtr->ssl, bytesRead));
			*errorCodePtr = ECONNABORTED;
	} else if (BIO_should_retry(statePtr->bio)) {
	    dprintf("RE! ");
			break;
	    *errorCodePtr = EAGAIN;
	} else {
	    *errorCodePtr = Tcl_GetErrno();
		case SSL_ERROR_SYSCALL:
			dprintf("I/O error reading, treating it as EOF");
	    if (*errorCodePtr == ECONNRESET) {
		/* Soft EOF */
		*errorCodePtr = 0;
		bytesRead = 0;
	    }
			*errorCodePtr = 0;
			bytesRead = 0;
			break;
	}
	}
    }
    input:
    dprintf("Input(%d) -> %d [%d]", bufSize, bytesRead, *errorCodePtr);
    return bytesRead;
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. */
static int TlsOutputProc(ClientData instanceData, CONST char *buf, int toWrite, int *errorCodePtr) {
              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;
	State *statePtr = (State *) instanceData;
	int written, err;

    *errorCodePtr = 0;
	*errorCodePtr = 0;

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

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

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

	    goto output;
		return(-1);
	}
    }

    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 {
	if (toWrite == 0) {
		dprintf("zero-write");
		BIO_flush(statePtr->bio);
		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]",
	dprintf("BIO_write(%p, %d) -> [%d]", (void *) statePtr, toWrite, written);
		(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",
	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, *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;
			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;
output:
	dprintf("Output(%d) -> %d", toWrite, written);
	return(written);
}

/*
 *-------------------------------------------------------------------
 *
 * TlsGetOptionProc --
 *
410
411
412
413
414
415
416
417

418
419
420
421
422
423
424
402
403
404
405
406
407
408

409
410
411
412
413
414
415
416






-
+







					 * 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_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) {
        /*
458
459
460
461
462
463
464
465



















466
467
468
469
470
471
472
473
474
475
476
477
478

479
480
481
482
483
484
485
486

487
488
489

490
491
492
493
494

495
496
497
498
499
500
501
450
451
452
453
454
455
456

457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486

487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514






-
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+











-

+








+



+





+







    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; }
    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.
	 */

	downChan = Tls_GetParent(statePtr);

        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);
	}
}

/*
 *-------------------------------------------------------------------
509
510
511
512
513
514
515
516
517

518
519
520
521

522
523

524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543

544
545
546
547
548


549
550
551
552
553
554





555
556
557
558
559
560
561
562
563








564
565
566
567



568
569
570
571
572




573
574
575








576
577
578
579
580
581
582
583
584
585

586
587

588
589

590
591

592
593
594
595
596
597
598
522
523
524
525
526
527
528


529




530
531

532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551

552





553
554
555





556
557
558
559
560









561
562
563
564
565
566
567
568




569
570
571
572




573
574
575
576
577


578
579
580
581
582
583
584
585
586









587
588

589


590
591

592
593
594
595
596
597
598
599






-
-
+
-
-
-
-
+

-
+



















-
+
-
-
-
-
-
+
+

-
-
-
-
-
+
+
+
+
+
-
-
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
-
-
-
-
+
+
+

-
-
-
-
+
+
+
+

-
-
+
+
+
+
+
+
+
+

-
-
-
-
-
-
-
-
-
+

-
+
-
-
+

-
+







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

    return Tcl_GetChannelHandle(Tls_GetParent(statePtr), direction, handlePtr);
	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
static int TlsNotifyProc(ClientData instanceData, int mask) {
TlsNotifyProc(instanceData, mask)
    ClientData	   instanceData; /* The state of the notified transformation */
    int		   mask;       /* The mask of occuring events */
{
    State *statePtr = (State *) instanceData;
	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.
     */
	/*
	 * 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).
	 */
	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;
    }
		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_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");
	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("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("Tls_WaitForConnect returned an error");
	}
    }


    dprintf("Returning %i", mask);
	dprintf("Returning %i", mask);

    return mask;
	return(mask);
}

#if 0
/*
 *------------------------------------------------------*
 *
 *      TlsChannelHandler --
688
689
690
691
692
693
694
695
696

697
698
699
700


701


702

703
704
705
706
707
708
709
710


















711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726

727


728
729




























































































730
731

732
733
734
735
736
737
738
739
740
741
742






743
744

745
746
747
748
749
750
751
752













753
754
755
756

757
758

759
760

761


762

763
764
765

766
767
768
769



770
771
772
773
774
775
776
777
778
779
780
781
782


783
784
785
786
787
788
789
790
791
792


793
794
795

796
797
798
799
800
801
802
803

804
805
806

807
808
809

810
811
812
813



814
815

816





817
818
819
689
690
691
692
693
694
695


696




697
698
699
700
701

702
703







704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738

739
740
741

742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834

835











836
837
838
839
840
841


842








843
844
845
846
847
848
849
850
851
852
853
854
855
856
857


858


859


860
861
862
863

864
865


866




867
868
869







870





871
872


873







874
875



876








877



878



879




880
881
882


883
884
885
886
887
888
889
890
891
892






-
-
+
-
-
-
-
+
+

+
+
-
+

-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
















+
-
+
+

-
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

-
+
-
-
-
-
-
-
-
-
-
-
-
+
+
+
+
+
+
-
-
+
-
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
+
+
+
+


-
-
+
-
-
+
-
-
+

+
+
-
+

-
-
+
-
-
-
-
+
+
+
-
-
-
-
-
-
-

-
-
-
-
-
+
+
-
-

-
-
-
-
-
-
-
+
+
-
-
-
+
-
-
-
-
-
-
-
-
+
-
-
-
+
-
-
-
+
-
-
-
-
+
+
+
-
-
+

+
+
+
+
+



 *
 *	Result:
 *		None.
 *
 *------------------------------------------------------*
 */

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

	dprintf("Called");

    statePtr->timer = (Tcl_TimerToken) NULL;
	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);
	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;
	int err, rc;
	int bioShouldRetry;

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

			BIO_flush(statePtr->bio);
		}

		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 (!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 (statePtr->flags & TLS_TCL_HANDSHAKE_FAILED) {
			if (backingError == 0 && err == 0) {
        /*
         * 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;
				dprintf("EOF reached")
			}

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

		case SSL_ERROR_SSL:
    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);
			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);
	}

	/*SSL_write(statePtr->ssl, (char*)&err, 0);	HACK!!! */
	if (err > 0) {
#if 0
            dprintf("That seems to have gone okay");
	    BIO_flush(statePtr->bio);
	if (statePtr->flags & TLS_TCL_SERVER) {
	} else {
	    int rc = SSL_get_error(statePtr->ssl, err);
		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("Got error: %i (rc = %i)", err, rc);
			dprintf("Invalid certificate, returning in failure");

	    if (rc == SSL_ERROR_SSL) {
		Tls_Error(statePtr,
			Tls_Error(statePtr, (char *)X509_verify_cert_error_string(err));
			(char *)ERR_reason_error_string(ERR_get_error()));
                statePtr->flags |= TLS_TCL_HANDSHAKE_FAILED;
		*errorCodePtr = ECONNABORTED;
		return -1;
			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");
                }

	}
#endif
                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;
	dprintf("Removing the \"TLS_TCL_INIT\" flag since we have completed the handshake");
	statePtr->flags &= ~TLS_TCL_INIT;
		*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;
	dprintf("Returning in success");
		}
	    }
	    *errorCodePtr = Tcl_GetErrno();
	*errorCodePtr = 0;
	    dprintf("ERR(%d, %d) ", rc, *errorCodePtr);
	    return -1;
	}

	dprintf("R0! ");
	return 1;
    }
}
	return(0);
}


Tcl_Channel Tls_GetParent(State *statePtr) {
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].

17
18
19
20
21
22
23

24
25
26
27
28
29
30
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31






+







 */
#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

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
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






+
-
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+


+
+




















-
+







#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(...) { fprintf(stderr, "%s:%i:", __func__, __LINE__); fprintf(stderr, __VA_ARGS__); fprintf(stderr, "\n"); }
#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
124
125
126
127
128
129
130
131

132
133
134
135
136
137
138
139
140


141
161
162
163
164
165
166
167

168
169
170
171
172
173
174
175
176
177
178
179
180






-
+









+
+

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

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