| ︙ | | |
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|
*
*------------------------------------------------------*
*/
int Tls_WaitForConnect(State *statePtr, int *errorCodePtr, int handshakeFailureIsPermanent) {
unsigned long backingError;
int err, rc;
int bioShouldRetry;
*errorCodePtr = 0;
dprintf("WaitForConnect(%p)", statePtr);
dprintFlags(statePtr);
if (!(statePtr->flags & TLS_TCL_INIT)) {
dprintf("Tls_WaitForConnect called on already initialized channel -- returning with immediate success");
*errorCodePtr = 0;
/* Not initialized yet! */
/* Not initialized yet! Also calls SSL_do_handshake. */
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");
dprintf("Accept or connect was successful");
err = BIO_flush(statePtr->bio);
if (err <= 0) {
dprintf("Flushing the lower layers failed, this will probably terminate this session");
}
} else {
dprintf("Accept or connect failed");
}
rc = SSL_get_error(statePtr->ssl, err);
dprintf("Got error: %i (rc = %i)", err, rc);
backingError = ERR_get_error();
if (rc != SSL_ERROR_NONE) {
dprintf("Got error: %i (rc = %i)", err, rc);
dprintf("Got error: %s", ERR_reason_error_string(backingError));
}
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;
|
| ︙ | | |
186
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|
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|
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;
Tls_Error(statePtr, "Handshake not complete, will retry later");
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;
/* The connection is up, we are done here */
dprintf("The connection is up");
/* The TLS/SSL I/O operation completed */
dprintf("The connection is good");
*errorCodePtr = 0;
break;
case SSL_ERROR_ZERO_RETURN:
/* The TLS/SSL peer has closed the connection for writing by sending the close_notify alert */
dprintf("SSL_ERROR_ZERO_RETURN: Connect returned an invalid value...")
dprintf("SSL_ERROR_ZERO_RETURN: Connect returned an invalid value...");
*errorCodePtr = EINVAL;
Tls_Error(statePtr, "Peer has closed the connection for writing by sending the close_notify alert");
return(-1);
case SSL_ERROR_SYSCALL:
backingError = ERR_get_error();
/* Some non-recoverable, fatal I/O error occurred */
dprintf("SSL_ERROR_SYSCALL");
if (backingError == 0 && err == 0) {
dprintf("EOF reached")
*errorCodePtr = ECONNRESET;
Tls_Error(statePtr, "(unexpected) EOF reached");
} else if (backingError == 0 && err == -1) {
dprintf("I/O error occurred (errno = %lu)", (unsigned long) Tcl_GetErrno());
*errorCodePtr = Tcl_GetErrno();
if (*errorCodePtr == ECONNRESET) {
*errorCodePtr = ECONNABORTED;
}
Tls_Error(statePtr, (char *) Tcl_ErrnoMsg(*errorCodePtr));
} else {
dprintf("I/O error occurred (backingError = %lu)", backingError);
*errorCodePtr = backingError;
*errorCodePtr = Tcl_GetErrno();
if (*errorCodePtr == ECONNRESET) {
*errorCodePtr = ECONNABORTED;
}
Tls_Error(statePtr, (char *) ERR_reason_error_string(backingError));
}
}
statePtr->flags |= TLS_TCL_HANDSHAKE_FAILED;
return -1;
statePtr->flags |= TLS_TCL_HANDSHAKE_FAILED;
return -1;
case SSL_ERROR_SSL:
/* A non-recoverable, fatal error in the SSL library occurred, usually a protocol error */
dprintf("Got permanent fatal SSL error, aborting immediately");
Tls_Error(statePtr, (char *)ERR_reason_error_string(ERR_get_error()));
dprintf("SSL_ERROR_SSL: Got permanent fatal SSL error, aborting immediately");
if (SSL_get_verify_result(statePtr->ssl) != X509_V_OK) {
Tls_Error(statePtr, (char *) X509_verify_cert_error_string(SSL_get_verify_result(statePtr->ssl)));
}
if (backingError != 0) {
Tls_Error(statePtr, (char *) ERR_reason_error_string(backingError));
}
statePtr->flags |= TLS_TCL_HANDSHAKE_FAILED;
*errorCodePtr = ECONNABORTED;
return(-1);
default:
/* The operation did not complete and should be retried later. */
dprintf("We got a confusing reply: %i", rc);
*errorCodePtr = Tcl_GetErrno();
dprintf("Operation did not complete, call function again later: %i", rc);
*errorCodePtr = EAGAIN;
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
|
| ︙ | | |
311
312
313
314
315
316
317
318
319
320
321
322
323
324
|
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
|
+
|
return(0);
}
dprintf("Calling Tls_WaitForConnect");
tlsConnect = Tls_WaitForConnect(statePtr, errorCodePtr, 0);
if (tlsConnect < 0) {
dprintf("Got an error waiting to connect (tlsConnect = %i, *errorCodePtr = %i)", tlsConnect, *errorCodePtr);
Tls_Error(statePtr, strerror(*errorCodePtr));
bytesRead = -1;
if (*errorCodePtr == ECONNRESET) {
dprintf("Got connection reset");
/* Soft EOF */
*errorCodePtr = 0;
bytesRead = 0;
|
| ︙ | | |
338
339
340
341
342
343
344
345
346
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348
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350
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402
403
404
405
406
|
348
349
350
351
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355
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427
428
429
430
431
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434
435
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437
438
439
440
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443
444
|
+
+
-
-
+
+
+
+
+
+
+
+
-
+
+
+
+
+
+
+
+
+
+
-
+
-
-
-
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-
-
-
-
-
-
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+
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+
|
* 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);
backingError = ERR_get_error();
#if 0
if (bytesRead <= 0) {
if (BIO_should_retry(statePtr->bio)) {
dprintf("I/O failed, will retry based on EAGAIN");
*errorCodePtr = EAGAIN;
}
}
#endif
switch (err) {
case SSL_ERROR_NONE:
dprintBuffer(buf, bytesRead);
break;
case SSL_ERROR_SSL:
/* A non-recoverable, fatal error in the SSL library occurred, usually a protocol error */
dprintf("SSL negotiation error, indicating that the connection has been aborted");
dprintf("SSL error, indicating that the connection has been aborted");
if (backingError != 0) {
Tls_Error(statePtr, (char *) ERR_reason_error_string(backingError));
} else if (SSL_get_verify_result(statePtr->ssl) != X509_V_OK) {
Tls_Error(statePtr, (char *) X509_verify_cert_error_string(SSL_get_verify_result(statePtr->ssl)));
} else {
Tls_Error(statePtr, "Unknown SSL error");
}
Tls_Error(statePtr, TCLTLS_SSL_ERROR(statePtr->ssl, bytesRead));
backingError = ERR_get_error();
/* Some non-recoverable, fatal I/O error occurred */
if (backingError == 0 && bytesRead == 0) {
dprintf("EOF reached")
*errorCodePtr = 0;
bytesRead = 0;
} else if (backingError == 0 && bytesRead == -1) {
dprintf("I/O error occurred (errno = %lu)", (unsigned long) Tcl_GetErrno());
*errorCodePtr = Tcl_GetErrno();
bytesRead = -1;
} else {
dprintf("I/O error occurred (backingError = %lu)", backingError);
*errorCodePtr = backingError;
bytesRead = -1;
}
if (backingError == 0 && bytesRead == 0) {
/* Unexpected EOF from the peer for OpenSSL 1.1 */
dprintf("(Unexpected) EOF reached")
*errorCodePtr = 0;
bytesRead = 0;
Tls_Error(statePtr, "EOF reached");
} else if (backingError == 0 && bytesRead == -1) {
dprintf("I/O error occurred (errno = %lu)", (unsigned long) Tcl_GetErrno());
*errorCodePtr = Tcl_GetErrno();
bytesRead = -1;
Tls_Error(statePtr, (char *) Tcl_ErrnoMsg(*errorCodePtr));
} else {
dprintf("I/O error occurred (backingError = %lu)", backingError);
*errorCodePtr = Tcl_GetErrno();
bytesRead = -1;
Tls_Error(statePtr, (char *) ERR_reason_error_string(backingError));
}
break;
case SSL_ERROR_ZERO_RETURN:
dprintf("Got SSL_ERROR_ZERO_RETURN, this means an EOF has been reached");
bytesRead = 0;
*errorCodePtr = 0;
break;
case SSL_ERROR_WANT_READ:
dprintf("Got SSL_ERROR_WANT_READ, mapping this to EAGAIN");
bytesRead = -1;
*errorCodePtr = EAGAIN;
break;
default:
dprintf("Unknown error (err = %i), mapping to EOF", err);
*errorCodePtr = 0;
bytesRead = 0;
break;
|
| ︙ | | |
444
445
446
447
448
449
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
|
482
483
484
485
486
487
488
489
490
491
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493
494
495
496
497
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500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
|
+
+
|
return(-1);
}
dprintf("Calling Tls_WaitForConnect");
tlsConnect = Tls_WaitForConnect(statePtr, errorCodePtr, 1);
if (tlsConnect < 0) {
dprintf("Got an error waiting to connect (tlsConnect = %i, *errorCodePtr = %i)", tlsConnect, *errorCodePtr);
Tls_Error(statePtr, strerror(*errorCodePtr));
written = -1;
if (*errorCodePtr == ECONNRESET) {
dprintf("Got connection reset");
/* Soft EOF */
*errorCodePtr = 0;
written = 0;
}
return(written);
}
if (toWrite == 0) {
dprintf("zero-write");
err = BIO_flush(statePtr->bio);
if (err <= 0) {
dprintf("Flushing failed");
Tls_Error(statePtr, "Flush failed");
*errorCodePtr = EIO;
written = 0;
return(-1);
}
written = 0;
|
| ︙ | | |
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
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|
528
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530
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|
+
+
+
+
+
-
+
+
+
+
+
-
+
+
+
+
+
+
+
+
+
-
+
+
+
|
* 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);
backingError = ERR_get_error();
switch (err) {
case SSL_ERROR_NONE:
if (written < 0) {
written = 0;
}
break;
case SSL_ERROR_WANT_WRITE:
dprintf("Got SSL_ERROR_WANT_WRITE, mapping it to EAGAIN");
*errorCodePtr = EAGAIN;
written = -1;
Tls_Error(statePtr, "SSL_ERROR_WANT_WRITE");
break;
case SSL_ERROR_WANT_READ:
dprintf(" write R BLOCK");
Tls_Error(statePtr, "SSL_ERROR_WANT_READ");
break;
case SSL_ERROR_WANT_X509_LOOKUP:
dprintf(" write X BLOCK");
Tls_Error(statePtr, "SSL_ERROR_WANT_X509_LOOKUP");
break;
case SSL_ERROR_ZERO_RETURN:
dprintf(" closed");
written = 0;
*errorCodePtr = 0;
Tls_Error(statePtr, "Peer has closed the connection for writing by sending the close_notify alert");
break;
case SSL_ERROR_SYSCALL:
backingError = ERR_get_error();
/* Some non-recoverable, fatal I/O error occurred */
if (backingError == 0 && written == 0) {
dprintf("EOF reached")
*errorCodePtr = 0;
written = 0;
Tls_Error(statePtr, "EOF reached");
} else if (backingError == 0 && written == -1) {
dprintf("I/O error occurred (errno = %lu)", (unsigned long) Tcl_GetErrno());
*errorCodePtr = Tcl_GetErrno();
written = -1;
Tls_Error(statePtr, (char *) Tcl_ErrnoMsg(*errorCodePtr));
} else {
dprintf("I/O error occurred (backingError = %lu)", backingError);
*errorCodePtr = backingError;
*errorCodePtr = Tcl_GetErrno();
written = -1;
Tls_Error(statePtr, (char *) ERR_reason_error_string(backingError));
}
break;
case SSL_ERROR_SSL:
/* A non-recoverable, fatal error in the SSL library occurred, usually a protocol error */
dprintf("SSL error, indicating that the connection has been aborted");
if (backingError != 0) {
Tls_Error(statePtr, (char *) ERR_reason_error_string(backingError));
} else if (SSL_get_verify_result(statePtr->ssl) != X509_V_OK) {
Tls_Error(statePtr, (char *) X509_verify_cert_error_string(SSL_get_verify_result(statePtr->ssl)));
} else {
Tls_Error(statePtr, TCLTLS_SSL_ERROR(statePtr->ssl, written));
Tls_Error(statePtr, "Unknown SSL error");
}
*errorCodePtr = ECONNABORTED;
written = -1;
break;
default:
dprintf("unknown error: %d", err);
Tls_Error(statePtr, "Unknown error");
break;
}
dprintf("Output(%d) -> %d", toWrite, written);
return(written);
}
|
| ︙ | | |
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
|
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
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756
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758
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760
761
762
763
764
|
+
+
-
+
+
-
+
|
TlsWatchProc(
void *instanceData, /* The socket state. */
int mask) /* Events of interest; an OR-ed combination of
* TCL_READABLE, TCL_WRITABLE and TCL_EXCEPTION. */
{
Tcl_Channel downChan;
State *statePtr = (State *)instanceData;
Tcl_DriverWatchProc *watchProc;
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");
watchProc = Tcl_ChannelWatchProc(Tcl_GetChannelType(downChan));
Tcl_GetChannelType(downChan)->watchProc(Tcl_GetChannelInstanceData(downChan), 0);
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);
watchProc = Tcl_ChannelWatchProc(Tcl_GetChannelType(downChan));
Tcl_GetChannelType(downChan)->watchProc(Tcl_GetChannelInstanceData(downChan), mask);
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);
|
| ︙ | | |
786
787
788
789
790
791
792
793
794
795
796
797
798
799
|
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
|
+
|
dprintf("Returning 0 due to callback");
return 0;
}
dprintf("Calling Tls_WaitForConnect");
errorCode = 0;
if (Tls_WaitForConnect(statePtr, &errorCode, 1) < 0) {
Tls_Error(statePtr, strerror(errorCode));
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");
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