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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
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322
323
324
|
323
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325
326
327
328
329
330
331
332
333
334
335
336
337
|
+
|
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
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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
|
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
515
516
517
518
|
+
+
|
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
503
504
505
506
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529
530
531
532
533
534
535
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537
538
539
540
541
542
543
544
545
546
547
|
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
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579
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589
590
591
592
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596
597
598
599
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601
602
603
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605
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607
608
609
610
611
612
613
614
615
616
617
618
|
+
+
+
+
+
+
+
+
+
+
+
-
+
+
+
+
+
-
+
+
+
+
+
+
+
+
+
+
-
+
+
+
+
|
* 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;
}
|
| ︙ | | |
786
787
788
789
790
791
792
793
794
795
796
797
798
799
|
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
|
+
|
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");
|
| ︙ | | |