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*
*------------------------------------------------------*
*/
int Tls_WaitForConnect(State *statePtr, int *errorCodePtr, int handshakeFailureIsPermanent) {
unsigned long backingError;
int err, rc;
int bioShouldRetry;
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! */
if (statePtr->flags & TLS_TCL_SERVER) {
dprintf("Calling SSL_accept()");
err = SSL_accept(statePtr->ssl);
} else {
dprintf("Calling SSL_connect()");
err = SSL_connect(statePtr->ssl);
}
if (err > 0) {
dprintf("That seems to have gone okay");
err = BIO_flush(statePtr->bio);
if (err <= 0) {
dprintf("Flushing the lower layers failed, this will probably terminate this session");
}
}
rc = SSL_get_error(statePtr->ssl, err);
dprintf("Got error: %i (rc = %i)", err, rc);
bioShouldRetry = 0;
if (err <= 0) {
if (rc == SSL_ERROR_WANT_CONNECT || rc == SSL_ERROR_WANT_ACCEPT || rc == SSL_ERROR_WANT_READ || rc == SSL_ERROR_WANT_WRITE) {
bioShouldRetry = 1;
} else if (BIO_should_retry(statePtr->bio)) {
bioShouldRetry = 1;
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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");
return 0;
}
if (statePtr->flags & TLS_TCL_HANDSHAKE_FAILED) {
/*
* Different types of operations have different requirements
* SSL being established
*/
if (handshakeFailureIsPermanent) {
dprintf("Asked to wait for a TLS handshake that has already failed. Returning fatal error");
*errorCodePtr = ECONNABORTED;
} else {
dprintf("Asked to wait for a TLS handshake that has already failed. Returning soft error");
*errorCodePtr = ECONNRESET;
}
Tls_Error(statePtr, "Wait for failed handshake");
return -1;
}
for (;;) {
ERR_clear_error();
/* 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("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);
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;
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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;
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");
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();
if (backingError == 0 && err == 0) {
dprintf("EOF reached")
*errorCodePtr = ECONNRESET;
} 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;
}
} else {
dprintf("I/O error occurred (backingError = %lu)", backingError);
*errorCodePtr = backingError;
if (*errorCodePtr == ECONNRESET) {
*errorCodePtr = ECONNABORTED;
}
}
statePtr->flags |= TLS_TCL_HANDSHAKE_FAILED;
return -1;
case SSL_ERROR_SSL:
dprintf("Got permanent fatal SSL error, aborting immediately");
Tls_Error(statePtr, ERR_reason_error_string(ERR_get_error()));
statePtr->flags |= TLS_TCL_HANDSHAKE_FAILED;
*errorCodePtr = ECONNABORTED;
return -1;
default:
dprintf("We got a confusing reply: %i", rc);
*errorCodePtr = Tcl_GetErrno();
dprintf("ERR(%d, %d) ", rc, *errorCodePtr);
return -1;
}
#if 0
if (statePtr->flags & TLS_TCL_SERVER) {
dprintf("This is an TLS server, checking the certificate for the peer");
err = SSL_get_verify_result(statePtr->ssl);
if (err != X509_V_OK) {
dprintf("Invalid certificate, returning in failure");
Tls_Error(statePtr, X509_verify_cert_error_string(err));
statePtr->flags |= TLS_TCL_HANDSHAKE_FAILED;
*errorCodePtr = ECONNABORTED;
return -1;
}
}
#endif
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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;
}
switch (rc) {
case SSL_ERROR_NONE:
/* 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...");
*errorCodePtr = EINVAL;
Tls_Error(statePtr, "Peer has closed the connection for writing by sending the close_notify alert");
return -1;
case SSL_ERROR_SYSCALL:
/* 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, Tcl_ErrnoMsg(*errorCodePtr));
} else {
dprintf("I/O error occurred (backingError = %lu)", backingError);
*errorCodePtr = Tcl_GetErrno();
if (*errorCodePtr == ECONNRESET) {
*errorCodePtr = ECONNABORTED;
}
Tls_Error(statePtr, ERR_reason_error_string(backingError));
}
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("SSL_ERROR_SSL: Got permanent fatal SSL error, aborting immediately");
if (SSL_get_verify_result(statePtr->ssl) != X509_V_OK) {
Tls_Error(statePtr, X509_verify_cert_error_string(SSL_get_verify_result(statePtr->ssl)));
}
if (backingError != 0) {
Tls_Error(statePtr, 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("Operation did not complete, call function again later: %i", rc);
*errorCodePtr = EAGAIN;
dprintf("ERR(%d, %d) ", rc, *errorCodePtr);
Tls_Error(statePtr, "Operation did not complete, call function again later");
return -1;
}
dprintf("Removing the \"TLS_TCL_INIT\" flag since we have completed the handshake");
statePtr->flags &= ~TLS_TCL_INIT;
dprintf("Returning in success");
*errorCodePtr = 0;
return 0;
|
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|
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);
bytesRead = -1;
if (*errorCodePtr == ECONNRESET) {
dprintf("Got connection reset");
/* Soft EOF */
*errorCodePtr = 0;
bytesRead = 0;
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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;
|
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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);
#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:
dprintf("SSL negotiation error, indicating that the connection has been aborted");
Tls_Error(statePtr, TCLTLS_SSL_ERROR(statePtr->ssl, bytesRead));
*errorCodePtr = ECONNABORTED;
bytesRead = -1;
break;
case SSL_ERROR_SYSCALL:
backingError = ERR_get_error();
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;
}
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;
}
dprintf("Input(%d) -> %d [%d]", bufSize, bytesRead, *errorCodePtr);
return bytesRead;
}
/*
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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 error, indicating that the connection has been aborted");
if (backingError != 0) {
Tls_Error(statePtr, ERR_reason_error_string(backingError));
} else if (SSL_get_verify_result(statePtr->ssl) != X509_V_OK) {
Tls_Error(statePtr, X509_verify_cert_error_string(SSL_get_verify_result(statePtr->ssl)));
} else {
Tls_Error(statePtr, "Unknown SSL error");
}
*errorCodePtr = ECONNABORTED;
bytesRead = -1;
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
/* Unexpected EOF from the peer for OpenSSL 3.0+ */
if (ERR_GET_REASON(backingError) == SSL_R_UNEXPECTED_EOF_WHILE_READING) {
dprintf("(Unexpected) EOF reached")
*errorCodePtr = 0;
bytesRead = 0;
Tls_Error(statePtr, "EOF reached");
}
#endif
break;
case SSL_ERROR_SYSCALL:
/* Some non-recoverable, fatal I/O error occurred */
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, Tcl_ErrnoMsg(*errorCodePtr));
} else {
dprintf("I/O error occurred (backingError = %lu)", backingError);
*errorCodePtr = Tcl_GetErrno();
bytesRead = -1;
Tls_Error(statePtr, 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;
Tls_Error(statePtr, "Peer has closed the connection for writing by sending the close_notify alert");
break;
case SSL_ERROR_WANT_READ:
dprintf("Got SSL_ERROR_WANT_READ, mapping this to EAGAIN");
bytesRead = -1;
*errorCodePtr = EAGAIN;
Tls_Error(statePtr, "SSL_ERROR_WANT_READ");
break;
default:
dprintf("Unknown error (err = %i), mapping to EOF", err);
*errorCodePtr = 0;
bytesRead = 0;
Tls_Error(statePtr, "Unknown error");
break;
}
dprintf("Input(%d) -> %d [%d]", bufSize, bytesRead, *errorCodePtr);
return bytesRead;
}
/*
|
| ︙ | | | ︙ | |
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|
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);
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");
*errorCodePtr = EIO;
written = 0;
return -1;
}
written = 0;
|
>
>
|
486
487
488
489
490
491
492
493
494
495
496
497
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502
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|
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
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494
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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);
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;
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;
*errorCodePtr = 0;
break;
case SSL_ERROR_SYSCALL:
backingError = ERR_get_error();
if (backingError == 0 && written == 0) {
dprintf("EOF reached")
*errorCodePtr = 0;
written = 0;
} else if (backingError == 0 && written == -1) {
dprintf("I/O error occurred (errno = %lu)", (unsigned long) Tcl_GetErrno());
*errorCodePtr = Tcl_GetErrno();
written = -1;
} else {
dprintf("I/O error occurred (backingError = %lu)", backingError);
*errorCodePtr = backingError;
written = -1;
}
break;
case SSL_ERROR_SSL:
Tls_Error(statePtr, TCLTLS_SSL_ERROR(statePtr->ssl, written));
*errorCodePtr = ECONNABORTED;
written = -1;
break;
default:
dprintf("unknown error: %d", err);
break;
}
dprintf("Output(%d) -> %d", toWrite, written);
return written;
}
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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:
/* 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, Tcl_ErrnoMsg(*errorCodePtr));
} else {
dprintf("I/O error occurred (backingError = %lu)", backingError);
*errorCodePtr = Tcl_GetErrno();
written = -1;
Tls_Error(statePtr, 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, ERR_reason_error_string(backingError));
} else if (SSL_get_verify_result(statePtr->ssl) != X509_V_OK) {
Tls_Error(statePtr, X509_verify_cert_error_string(SSL_get_verify_result(statePtr->ssl)));
} else {
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;
}
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dprintf("Returning 0 due to callback");
return 0;
}
dprintf("Calling Tls_WaitForConnect");
errorCode = 0;
if (Tls_WaitForConnect(statePtr, &errorCode, 1) < 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");
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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");
|
| ︙ | | | ︙ | |