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
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
|
error $err $::errorInfo $::errorCode
} else {
log 2 "tls::_accept - called \"$callback\" succeeded"
}
}
#
# Sample callback for hooking: -
#
# error
# verify
# info
#
proc tls::callback {option args} {
#log 2 [concat $option $args]
foreach {chan msg} $args break
log 0 "TLS/$chan: error: $msg"
}
"info" {
# poor man's lassign
foreach {chan major minor msg type} $args break
if {$msg != ""} {
append state ": $msg"
}
# For tracing
upvar #0 tls::$chan cb
set cb($major) $minor
log 2 "TLS/$chan: $major/$minor: $state"
}
"message" {
# poor man's lassign
foreach {chan direction version content_type msg} $args break
foreach {chan session_id ticket lifetime} $args break
log 0 "TLS/$chan: session: lifetime $lifetime"
}
default {
return -code error "bad option \"$option\":\
must be one of error, info, or session"
}
}
}
#
# Sample callback when return value is needed
#
proc tls::validate_command {option args} {
variable debug
#log 2 [concat $option $args]
foreach {chan protocol match} $args break
log 0 "TLS/$chan: alpn: $protocol $match"
}
"hello" {
foreach {chan servername} $args break
log 0 "TLS/$chan: hello: $servername"
}
"sni" {
foreach {chan servername} $args break
log 0 "TLS/$chan: sni: $servername"
}
"verify" {
# poor man's lassign
foreach {chan depth cert rc err} $args break
must be one of alpn, info, or verify"
}
}
return 1
}
proc tls::xhandshake {chan} {
upvar #0 tls::$chan cb
|
|
<
<
<
<
|
<
<
|
|
|
<
|
|
>
>
>
|
|
<
<
|
|
|
<
|
|
|
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
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
|
error $err $::errorInfo $::errorCode
} else {
log 2 "tls::_accept - called \"$callback\" succeeded"
}
}
#
# Sample callback for status data from OpenSSL
#
proc tls::callback {option chan args} {
variable debug
switch -- $option {
"error" {
lassign $args msg
log 0 "TLS/$chan: error: $msg"
}
"info" {
set type ""
lassign $args major minor msg type
if {$msg != ""} {
append state ": $msg"
}
# For tracing
upvar #0 tls::$chan cb
set cb($major) $minor
log 2 "TLS/$chan: $major/$minor: $state"
}
"message" {
lassign $args direction version content_type msg
log 0 "TLS/$chan: info: $direction $msg"
}
"session" {
lassign $args session_id ticket lifetime
log 0 "TLS/$chan: session: lifetime $lifetime"
}
"verify" {
return [tls::validate_command $option $chan {*}$args]
}
default {
return -code error "bad option \"$option\":\
must be one of error, info, message, or session"
}
}
}
#
# Sample callback when return value is needed
#
proc tls::validate_command {option chan args} {
variable debug
switch -- $option {
"alpn" {
lassign $args protocol match
log 0 "TLS/$chan: alpn: $protocol $match"
}
"hello" {
lassign $args servername
log 0 "TLS/$chan: hello: $servername"
}
"sni" {
lassign $args servername
log 0 "TLS/$chan: sni: $servername"
}
"verify" {
lassign $args depth cert rc err
array set c $cert
if {$rc != "1"} {
log 1 "TLS/$chan: verify/$depth: Bad Cert: $err (rc = $rc)"
} else {
log 2 "TLS/$chan: verify/$depth: $c(subject)"
}
if {$debug > 0} {
return 1; # FORCE OK
} else {
return $rc
}
}
default {
return -code error "bad option \"$option\":\
must be one of alpn, hello, sni, or verify"
}
}
return 1
}
proc tls::xhandshake {chan} {
upvar #0 tls::$chan cb
|
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
|
}
if {$cb(handshake) == "done"} {
return 1
}
}
}
proc tls::password {rwflag size} {
log 0 "TLS/Password: did you forget to set your passwd!"
# Return the worlds best kept secret password.
return "secret"
}
proc tls::log {level msg} {
variable debug
|
|
|
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
|
}
if {$cb(handshake) == "done"} {
return 1
}
}
}
proc tls::password {{option password} {rwflag 0} {size 0}} {
log 0 "TLS/Password: did you forget to set your passwd!"
# Return the worlds best kept secret password.
return "secret"
}
proc tls::log {level msg} {
variable debug
|