1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 2004 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.haxx.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ***************************************************************************/
22
23 #include "curl_setup.h"
24
25 #ifdef HAVE_STRERROR_R
26 # if (!defined(HAVE_POSIX_STRERROR_R) && \
27 !defined(HAVE_GLIBC_STRERROR_R) && \
28 !defined(HAVE_VXWORKS_STRERROR_R)) || \
29 (defined(HAVE_POSIX_STRERROR_R) && defined(HAVE_VXWORKS_STRERROR_R)) || \
30 (defined(HAVE_GLIBC_STRERROR_R) && defined(HAVE_VXWORKS_STRERROR_R)) || \
31 (defined(HAVE_POSIX_STRERROR_R) && defined(HAVE_GLIBC_STRERROR_R))
32 # error "strerror_r MUST be either POSIX, glibc or vxworks-style"
33 # endif
34 #endif
35
36 #include <curl/curl.h>
37
38 #ifdef USE_LIBIDN2
39 #include <idn2.h>
40 #endif
41
42 #ifdef USE_WINDOWS_SSPI
43 #include "curl_sspi.h"
44 #endif
45
46 #include "strerror.h"
47 /* The last 3 #include files should be in this order */
48 #include "curl_printf.h"
49 #include "curl_memory.h"
50 #include "memdebug.h"
51
52 #if defined(WIN32) || defined(_WIN32_WCE)
53 #define PRESERVE_WINDOWS_ERROR_CODE
54 #endif
55
56 const char *
curl_easy_strerror(CURLcode error)57 curl_easy_strerror(CURLcode error)
58 {
59 #ifndef CURL_DISABLE_VERBOSE_STRINGS
60 switch(error) {
61 case CURLE_OK:
62 return "No error";
63
64 case CURLE_UNSUPPORTED_PROTOCOL:
65 return "Unsupported protocol";
66
67 case CURLE_FAILED_INIT:
68 return "Failed initialization";
69
70 case CURLE_URL_MALFORMAT:
71 return "URL using bad/illegal format or missing URL";
72
73 case CURLE_NOT_BUILT_IN:
74 return "A requested feature, protocol or option was not found built-in in"
75 " this libcurl due to a build-time decision.";
76
77 case CURLE_COULDNT_RESOLVE_PROXY:
78 return "Couldn't resolve proxy name";
79
80 case CURLE_COULDNT_RESOLVE_HOST:
81 return "Couldn't resolve host name";
82
83 case CURLE_COULDNT_CONNECT:
84 return "Couldn't connect to server";
85
86 case CURLE_WEIRD_SERVER_REPLY:
87 return "Weird server reply";
88
89 case CURLE_REMOTE_ACCESS_DENIED:
90 return "Access denied to remote resource";
91
92 case CURLE_FTP_ACCEPT_FAILED:
93 return "FTP: The server failed to connect to data port";
94
95 case CURLE_FTP_ACCEPT_TIMEOUT:
96 return "FTP: Accepting server connect has timed out";
97
98 case CURLE_FTP_PRET_FAILED:
99 return "FTP: The server did not accept the PRET command.";
100
101 case CURLE_FTP_WEIRD_PASS_REPLY:
102 return "FTP: unknown PASS reply";
103
104 case CURLE_FTP_WEIRD_PASV_REPLY:
105 return "FTP: unknown PASV reply";
106
107 case CURLE_FTP_WEIRD_227_FORMAT:
108 return "FTP: unknown 227 response format";
109
110 case CURLE_FTP_CANT_GET_HOST:
111 return "FTP: can't figure out the host in the PASV response";
112
113 case CURLE_HTTP2:
114 return "Error in the HTTP2 framing layer";
115
116 case CURLE_FTP_COULDNT_SET_TYPE:
117 return "FTP: couldn't set file type";
118
119 case CURLE_PARTIAL_FILE:
120 return "Transferred a partial file";
121
122 case CURLE_FTP_COULDNT_RETR_FILE:
123 return "FTP: couldn't retrieve (RETR failed) the specified file";
124
125 case CURLE_QUOTE_ERROR:
126 return "Quote command returned error";
127
128 case CURLE_HTTP_RETURNED_ERROR:
129 return "HTTP response code said error";
130
131 case CURLE_WRITE_ERROR:
132 return "Failed writing received data to disk/application";
133
134 case CURLE_UPLOAD_FAILED:
135 return "Upload failed (at start/before it took off)";
136
137 case CURLE_READ_ERROR:
138 return "Failed to open/read local data from file/application";
139
140 case CURLE_OUT_OF_MEMORY:
141 return "Out of memory";
142
143 case CURLE_OPERATION_TIMEDOUT:
144 return "Timeout was reached";
145
146 case CURLE_FTP_PORT_FAILED:
147 return "FTP: command PORT failed";
148
149 case CURLE_FTP_COULDNT_USE_REST:
150 return "FTP: command REST failed";
151
152 case CURLE_RANGE_ERROR:
153 return "Requested range was not delivered by the server";
154
155 case CURLE_HTTP_POST_ERROR:
156 return "Internal problem setting up the POST";
157
158 case CURLE_SSL_CONNECT_ERROR:
159 return "SSL connect error";
160
161 case CURLE_BAD_DOWNLOAD_RESUME:
162 return "Couldn't resume download";
163
164 case CURLE_FILE_COULDNT_READ_FILE:
165 return "Couldn't read a file:// file";
166
167 case CURLE_LDAP_CANNOT_BIND:
168 return "LDAP: cannot bind";
169
170 case CURLE_LDAP_SEARCH_FAILED:
171 return "LDAP: search failed";
172
173 case CURLE_FUNCTION_NOT_FOUND:
174 return "A required function in the library was not found";
175
176 case CURLE_ABORTED_BY_CALLBACK:
177 return "Operation was aborted by an application callback";
178
179 case CURLE_BAD_FUNCTION_ARGUMENT:
180 return "A libcurl function was given a bad argument";
181
182 case CURLE_INTERFACE_FAILED:
183 return "Failed binding local connection end";
184
185 case CURLE_TOO_MANY_REDIRECTS :
186 return "Number of redirects hit maximum amount";
187
188 case CURLE_UNKNOWN_OPTION:
189 return "An unknown option was passed in to libcurl";
190
191 case CURLE_TELNET_OPTION_SYNTAX :
192 return "Malformed telnet option";
193
194 case CURLE_GOT_NOTHING:
195 return "Server returned nothing (no headers, no data)";
196
197 case CURLE_SSL_ENGINE_NOTFOUND:
198 return "SSL crypto engine not found";
199
200 case CURLE_SSL_ENGINE_SETFAILED:
201 return "Can not set SSL crypto engine as default";
202
203 case CURLE_SSL_ENGINE_INITFAILED:
204 return "Failed to initialise SSL crypto engine";
205
206 case CURLE_SEND_ERROR:
207 return "Failed sending data to the peer";
208
209 case CURLE_RECV_ERROR:
210 return "Failure when receiving data from the peer";
211
212 case CURLE_SSL_CERTPROBLEM:
213 return "Problem with the local SSL certificate";
214
215 case CURLE_SSL_CIPHER:
216 return "Couldn't use specified SSL cipher";
217
218 case CURLE_PEER_FAILED_VERIFICATION:
219 return "SSL peer certificate or SSH remote key was not OK";
220
221 case CURLE_SSL_CACERT_BADFILE:
222 return "Problem with the SSL CA cert (path? access rights?)";
223
224 case CURLE_BAD_CONTENT_ENCODING:
225 return "Unrecognized or bad HTTP Content or Transfer-Encoding";
226
227 case CURLE_LDAP_INVALID_URL:
228 return "Invalid LDAP URL";
229
230 case CURLE_FILESIZE_EXCEEDED:
231 return "Maximum file size exceeded";
232
233 case CURLE_USE_SSL_FAILED:
234 return "Requested SSL level failed";
235
236 case CURLE_SSL_SHUTDOWN_FAILED:
237 return "Failed to shut down the SSL connection";
238
239 case CURLE_SSL_CRL_BADFILE:
240 return "Failed to load CRL file (path? access rights?, format?)";
241
242 case CURLE_SSL_ISSUER_ERROR:
243 return "Issuer check against peer certificate failed";
244
245 case CURLE_SEND_FAIL_REWIND:
246 return "Send failed since rewinding of the data stream failed";
247
248 case CURLE_LOGIN_DENIED:
249 return "Login denied";
250
251 case CURLE_TFTP_NOTFOUND:
252 return "TFTP: File Not Found";
253
254 case CURLE_TFTP_PERM:
255 return "TFTP: Access Violation";
256
257 case CURLE_REMOTE_DISK_FULL:
258 return "Disk full or allocation exceeded";
259
260 case CURLE_TFTP_ILLEGAL:
261 return "TFTP: Illegal operation";
262
263 case CURLE_TFTP_UNKNOWNID:
264 return "TFTP: Unknown transfer ID";
265
266 case CURLE_REMOTE_FILE_EXISTS:
267 return "Remote file already exists";
268
269 case CURLE_TFTP_NOSUCHUSER:
270 return "TFTP: No such user";
271
272 case CURLE_CONV_FAILED:
273 return "Conversion failed";
274
275 case CURLE_CONV_REQD:
276 return "Caller must register CURLOPT_CONV_ callback options";
277
278 case CURLE_REMOTE_FILE_NOT_FOUND:
279 return "Remote file not found";
280
281 case CURLE_SSH:
282 return "Error in the SSH layer";
283
284 case CURLE_AGAIN:
285 return "Socket not ready for send/recv";
286
287 case CURLE_RTSP_CSEQ_ERROR:
288 return "RTSP CSeq mismatch or invalid CSeq";
289
290 case CURLE_RTSP_SESSION_ERROR:
291 return "RTSP session error";
292
293 case CURLE_FTP_BAD_FILE_LIST:
294 return "Unable to parse FTP file list";
295
296 case CURLE_CHUNK_FAILED:
297 return "Chunk callback failed";
298
299 case CURLE_NO_CONNECTION_AVAILABLE:
300 return "The max connection limit is reached";
301
302 case CURLE_SSL_PINNEDPUBKEYNOTMATCH:
303 return "SSL public key does not match pinned public key";
304
305 case CURLE_SSL_INVALIDCERTSTATUS:
306 return "SSL server certificate status verification FAILED";
307
308 case CURLE_HTTP2_STREAM:
309 return "Stream error in the HTTP/2 framing layer";
310
311 case CURLE_RECURSIVE_API_CALL:
312 return "API function called from within callback";
313
314 /* error codes not used by current libcurl */
315 case CURLE_OBSOLETE20:
316 case CURLE_OBSOLETE24:
317 case CURLE_OBSOLETE29:
318 case CURLE_OBSOLETE32:
319 case CURLE_OBSOLETE40:
320 case CURLE_OBSOLETE44:
321 case CURLE_OBSOLETE46:
322 case CURLE_OBSOLETE50:
323 case CURLE_OBSOLETE51:
324 case CURLE_OBSOLETE57:
325 case CURL_LAST:
326 break;
327 }
328 /*
329 * By using a switch, gcc -Wall will complain about enum values
330 * which do not appear, helping keep this function up-to-date.
331 * By using gcc -Wall -Werror, you can't forget.
332 *
333 * A table would not have the same benefit. Most compilers will
334 * generate code very similar to a table in any case, so there
335 * is little performance gain from a table. And something is broken
336 * for the user's application, anyways, so does it matter how fast
337 * it _doesn't_ work?
338 *
339 * The line number for the error will be near this comment, which
340 * is why it is here, and not at the start of the switch.
341 */
342 return "Unknown error";
343 #else
344 if(!error)
345 return "No error";
346 else
347 return "Error";
348 #endif
349 }
350
351 const char *
curl_multi_strerror(CURLMcode error)352 curl_multi_strerror(CURLMcode error)
353 {
354 #ifndef CURL_DISABLE_VERBOSE_STRINGS
355 switch(error) {
356 case CURLM_CALL_MULTI_PERFORM:
357 return "Please call curl_multi_perform() soon";
358
359 case CURLM_OK:
360 return "No error";
361
362 case CURLM_BAD_HANDLE:
363 return "Invalid multi handle";
364
365 case CURLM_BAD_EASY_HANDLE:
366 return "Invalid easy handle";
367
368 case CURLM_OUT_OF_MEMORY:
369 return "Out of memory";
370
371 case CURLM_INTERNAL_ERROR:
372 return "Internal error";
373
374 case CURLM_BAD_SOCKET:
375 return "Invalid socket argument";
376
377 case CURLM_UNKNOWN_OPTION:
378 return "Unknown option";
379
380 case CURLM_ADDED_ALREADY:
381 return "The easy handle is already added to a multi handle";
382
383 case CURLM_RECURSIVE_API_CALL:
384 return "API function called from within callback";
385
386 case CURLM_LAST:
387 break;
388 }
389
390 return "Unknown error";
391 #else
392 if(error == CURLM_OK)
393 return "No error";
394 else
395 return "Error";
396 #endif
397 }
398
399 const char *
curl_share_strerror(CURLSHcode error)400 curl_share_strerror(CURLSHcode error)
401 {
402 #ifndef CURL_DISABLE_VERBOSE_STRINGS
403 switch(error) {
404 case CURLSHE_OK:
405 return "No error";
406
407 case CURLSHE_BAD_OPTION:
408 return "Unknown share option";
409
410 case CURLSHE_IN_USE:
411 return "Share currently in use";
412
413 case CURLSHE_INVALID:
414 return "Invalid share handle";
415
416 case CURLSHE_NOMEM:
417 return "Out of memory";
418
419 case CURLSHE_NOT_BUILT_IN:
420 return "Feature not enabled in this library";
421
422 case CURLSHE_LAST:
423 break;
424 }
425
426 return "CURLSHcode unknown";
427 #else
428 if(error == CURLSHE_OK)
429 return "No error";
430 else
431 return "Error";
432 #endif
433 }
434
435 #ifdef USE_WINSOCK
436
437 /* This function handles most / all (?) Winsock errors curl is able to produce.
438 */
439 static const char *
get_winsock_error(int err,char * buf,size_t len)440 get_winsock_error (int err, char *buf, size_t len)
441 {
442 #ifdef PRESERVE_WINDOWS_ERROR_CODE
443 DWORD old_win_err = GetLastError();
444 #endif
445 int old_errno = errno;
446 const char *p;
447
448 #ifndef CURL_DISABLE_VERBOSE_STRINGS
449 switch(err) {
450 case WSAEINTR:
451 p = "Call interrupted";
452 break;
453 case WSAEBADF:
454 p = "Bad file";
455 break;
456 case WSAEACCES:
457 p = "Bad access";
458 break;
459 case WSAEFAULT:
460 p = "Bad argument";
461 break;
462 case WSAEINVAL:
463 p = "Invalid arguments";
464 break;
465 case WSAEMFILE:
466 p = "Out of file descriptors";
467 break;
468 case WSAEWOULDBLOCK:
469 p = "Call would block";
470 break;
471 case WSAEINPROGRESS:
472 case WSAEALREADY:
473 p = "Blocking call in progress";
474 break;
475 case WSAENOTSOCK:
476 p = "Descriptor is not a socket";
477 break;
478 case WSAEDESTADDRREQ:
479 p = "Need destination address";
480 break;
481 case WSAEMSGSIZE:
482 p = "Bad message size";
483 break;
484 case WSAEPROTOTYPE:
485 p = "Bad protocol";
486 break;
487 case WSAENOPROTOOPT:
488 p = "Protocol option is unsupported";
489 break;
490 case WSAEPROTONOSUPPORT:
491 p = "Protocol is unsupported";
492 break;
493 case WSAESOCKTNOSUPPORT:
494 p = "Socket is unsupported";
495 break;
496 case WSAEOPNOTSUPP:
497 p = "Operation not supported";
498 break;
499 case WSAEAFNOSUPPORT:
500 p = "Address family not supported";
501 break;
502 case WSAEPFNOSUPPORT:
503 p = "Protocol family not supported";
504 break;
505 case WSAEADDRINUSE:
506 p = "Address already in use";
507 break;
508 case WSAEADDRNOTAVAIL:
509 p = "Address not available";
510 break;
511 case WSAENETDOWN:
512 p = "Network down";
513 break;
514 case WSAENETUNREACH:
515 p = "Network unreachable";
516 break;
517 case WSAENETRESET:
518 p = "Network has been reset";
519 break;
520 case WSAECONNABORTED:
521 p = "Connection was aborted";
522 break;
523 case WSAECONNRESET:
524 p = "Connection was reset";
525 break;
526 case WSAENOBUFS:
527 p = "No buffer space";
528 break;
529 case WSAEISCONN:
530 p = "Socket is already connected";
531 break;
532 case WSAENOTCONN:
533 p = "Socket is not connected";
534 break;
535 case WSAESHUTDOWN:
536 p = "Socket has been shut down";
537 break;
538 case WSAETOOMANYREFS:
539 p = "Too many references";
540 break;
541 case WSAETIMEDOUT:
542 p = "Timed out";
543 break;
544 case WSAECONNREFUSED:
545 p = "Connection refused";
546 break;
547 case WSAELOOP:
548 p = "Loop??";
549 break;
550 case WSAENAMETOOLONG:
551 p = "Name too long";
552 break;
553 case WSAEHOSTDOWN:
554 p = "Host down";
555 break;
556 case WSAEHOSTUNREACH:
557 p = "Host unreachable";
558 break;
559 case WSAENOTEMPTY:
560 p = "Not empty";
561 break;
562 case WSAEPROCLIM:
563 p = "Process limit reached";
564 break;
565 case WSAEUSERS:
566 p = "Too many users";
567 break;
568 case WSAEDQUOT:
569 p = "Bad quota";
570 break;
571 case WSAESTALE:
572 p = "Something is stale";
573 break;
574 case WSAEREMOTE:
575 p = "Remote error";
576 break;
577 #ifdef WSAEDISCON /* missing in SalfordC! */
578 case WSAEDISCON:
579 p = "Disconnected";
580 break;
581 #endif
582 /* Extended Winsock errors */
583 case WSASYSNOTREADY:
584 p = "Winsock library is not ready";
585 break;
586 case WSANOTINITIALISED:
587 p = "Winsock library not initialised";
588 break;
589 case WSAVERNOTSUPPORTED:
590 p = "Winsock version not supported";
591 break;
592
593 /* getXbyY() errors (already handled in herrmsg):
594 * Authoritative Answer: Host not found */
595 case WSAHOST_NOT_FOUND:
596 p = "Host not found";
597 break;
598
599 /* Non-Authoritative: Host not found, or SERVERFAIL */
600 case WSATRY_AGAIN:
601 p = "Host not found, try again";
602 break;
603
604 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
605 case WSANO_RECOVERY:
606 p = "Unrecoverable error in call to nameserver";
607 break;
608
609 /* Valid name, no data record of requested type */
610 case WSANO_DATA:
611 p = "No data record of requested type";
612 break;
613
614 default:
615 return NULL;
616 }
617 #else
618 if(!err)
619 return NULL;
620 else
621 p = "error";
622 #endif
623 strncpy(buf, p, len);
624 buf [len-1] = '\0';
625
626 if(errno != old_errno)
627 errno = old_errno;
628
629 #ifdef PRESERVE_WINDOWS_ERROR_CODE
630 if(old_win_err != GetLastError())
631 SetLastError(old_win_err);
632 #endif
633
634 return buf;
635 }
636 #endif /* USE_WINSOCK */
637
638 /*
639 * Our thread-safe and smart strerror() replacement.
640 *
641 * The 'err' argument passed in to this function MUST be a true errno number
642 * as reported on this system. We do no range checking on the number before
643 * we pass it to the "number-to-message" conversion function and there might
644 * be systems that don't do proper range checking in there themselves.
645 *
646 * We don't do range checking (on systems other than Windows) since there is
647 * no good reliable and portable way to do it.
648 */
Curl_strerror(int err,char * buf,size_t buflen)649 const char *Curl_strerror(int err, char *buf, size_t buflen)
650 {
651 #ifdef PRESERVE_WINDOWS_ERROR_CODE
652 DWORD old_win_err = GetLastError();
653 #endif
654 int old_errno = errno;
655 char *p;
656 size_t max;
657
658 DEBUGASSERT(err >= 0);
659
660 max = buflen - 1;
661 *buf = '\0';
662
663 #ifdef USE_WINSOCK
664
665 #ifdef _WIN32_WCE
666 {
667 wchar_t wbuf[256];
668 wbuf[0] = L'\0';
669
670 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err,
671 LANG_NEUTRAL, wbuf, sizeof(wbuf)/sizeof(wchar_t), NULL);
672 wcstombs(buf, wbuf, max);
673 }
674 #else
675 /* 'sys_nerr' is the maximum errno number, it is not widely portable */
676 if(err >= 0 && err < sys_nerr)
677 strncpy(buf, strerror(err), max);
678 else {
679 if(!get_winsock_error(err, buf, max) &&
680 !FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err,
681 LANG_NEUTRAL, buf, (DWORD)max, NULL))
682 msnprintf(buf, max, "Unknown error %d (%#x)", err, err);
683 }
684 #endif
685
686 #else /* not USE_WINSOCK coming up */
687
688 #if defined(HAVE_STRERROR_R) && defined(HAVE_POSIX_STRERROR_R)
689 /*
690 * The POSIX-style strerror_r() may set errno to ERANGE if insufficient
691 * storage is supplied via 'strerrbuf' and 'buflen' to hold the generated
692 * message string, or EINVAL if 'errnum' is not a valid error number.
693 */
694 if(0 != strerror_r(err, buf, max)) {
695 if('\0' == buf[0])
696 msnprintf(buf, max, "Unknown error %d", err);
697 }
698 #elif defined(HAVE_STRERROR_R) && defined(HAVE_GLIBC_STRERROR_R)
699 /*
700 * The glibc-style strerror_r() only *might* use the buffer we pass to
701 * the function, but it always returns the error message as a pointer,
702 * so we must copy that string unconditionally (if non-NULL).
703 */
704 {
705 char buffer[256];
706 char *msg = strerror_r(err, buffer, sizeof(buffer));
707 if(msg)
708 strncpy(buf, msg, max);
709 else
710 msnprintf(buf, max, "Unknown error %d", err);
711 }
712 #elif defined(HAVE_STRERROR_R) && defined(HAVE_VXWORKS_STRERROR_R)
713 /*
714 * The vxworks-style strerror_r() does use the buffer we pass to the function.
715 * The buffer size should be at least NAME_MAX (256)
716 */
717 {
718 char buffer[256];
719 if(OK == strerror_r(err, buffer))
720 strncpy(buf, buffer, max);
721 else
722 msnprintf(buf, max, "Unknown error %d", err);
723 }
724 #else
725 {
726 char *msg = strerror(err);
727 if(msg)
728 strncpy(buf, msg, max);
729 else
730 msnprintf(buf, max, "Unknown error %d", err);
731 }
732 #endif
733
734 #endif /* end of ! USE_WINSOCK */
735
736 buf[max] = '\0'; /* make sure the string is zero terminated */
737
738 /* strip trailing '\r\n' or '\n'. */
739 p = strrchr(buf, '\n');
740 if(p && (p - buf) >= 2)
741 *p = '\0';
742 p = strrchr(buf, '\r');
743 if(p && (p - buf) >= 1)
744 *p = '\0';
745
746 if(errno != old_errno)
747 errno = old_errno;
748
749 #ifdef PRESERVE_WINDOWS_ERROR_CODE
750 if(old_win_err != GetLastError())
751 SetLastError(old_win_err);
752 #endif
753
754 return buf;
755 }
756
757 #ifdef USE_WINDOWS_SSPI
Curl_sspi_strerror(int err,char * buf,size_t buflen)758 const char *Curl_sspi_strerror(int err, char *buf, size_t buflen)
759 {
760 #ifdef PRESERVE_WINDOWS_ERROR_CODE
761 DWORD old_win_err = GetLastError();
762 #endif
763 int old_errno = errno;
764 const char *txt;
765 char *outbuf;
766 size_t outmax;
767 #ifndef CURL_DISABLE_VERBOSE_STRINGS
768 char txtbuf[80];
769 char msgbuf[256];
770 char *p, *str, *msg = NULL;
771 bool msg_formatted = FALSE;
772 #endif
773
774 outbuf = buf;
775 outmax = buflen - 1;
776 *outbuf = '\0';
777
778 #ifndef CURL_DISABLE_VERBOSE_STRINGS
779
780 switch(err) {
781 case SEC_E_OK:
782 txt = "No error";
783 break;
784 case CRYPT_E_REVOKED:
785 txt = "CRYPT_E_REVOKED";
786 break;
787 case SEC_E_ALGORITHM_MISMATCH:
788 txt = "SEC_E_ALGORITHM_MISMATCH";
789 break;
790 case SEC_E_BAD_BINDINGS:
791 txt = "SEC_E_BAD_BINDINGS";
792 break;
793 case SEC_E_BAD_PKGID:
794 txt = "SEC_E_BAD_PKGID";
795 break;
796 case SEC_E_BUFFER_TOO_SMALL:
797 txt = "SEC_E_BUFFER_TOO_SMALL";
798 break;
799 case SEC_E_CANNOT_INSTALL:
800 txt = "SEC_E_CANNOT_INSTALL";
801 break;
802 case SEC_E_CANNOT_PACK:
803 txt = "SEC_E_CANNOT_PACK";
804 break;
805 case SEC_E_CERT_EXPIRED:
806 txt = "SEC_E_CERT_EXPIRED";
807 break;
808 case SEC_E_CERT_UNKNOWN:
809 txt = "SEC_E_CERT_UNKNOWN";
810 break;
811 case SEC_E_CERT_WRONG_USAGE:
812 txt = "SEC_E_CERT_WRONG_USAGE";
813 break;
814 case SEC_E_CONTEXT_EXPIRED:
815 txt = "SEC_E_CONTEXT_EXPIRED";
816 break;
817 case SEC_E_CROSSREALM_DELEGATION_FAILURE:
818 txt = "SEC_E_CROSSREALM_DELEGATION_FAILURE";
819 break;
820 case SEC_E_CRYPTO_SYSTEM_INVALID:
821 txt = "SEC_E_CRYPTO_SYSTEM_INVALID";
822 break;
823 case SEC_E_DECRYPT_FAILURE:
824 txt = "SEC_E_DECRYPT_FAILURE";
825 break;
826 case SEC_E_DELEGATION_POLICY:
827 txt = "SEC_E_DELEGATION_POLICY";
828 break;
829 case SEC_E_DELEGATION_REQUIRED:
830 txt = "SEC_E_DELEGATION_REQUIRED";
831 break;
832 case SEC_E_DOWNGRADE_DETECTED:
833 txt = "SEC_E_DOWNGRADE_DETECTED";
834 break;
835 case SEC_E_ENCRYPT_FAILURE:
836 txt = "SEC_E_ENCRYPT_FAILURE";
837 break;
838 case SEC_E_ILLEGAL_MESSAGE:
839 txt = "SEC_E_ILLEGAL_MESSAGE";
840 break;
841 case SEC_E_INCOMPLETE_CREDENTIALS:
842 txt = "SEC_E_INCOMPLETE_CREDENTIALS";
843 break;
844 case SEC_E_INCOMPLETE_MESSAGE:
845 txt = "SEC_E_INCOMPLETE_MESSAGE";
846 break;
847 case SEC_E_INSUFFICIENT_MEMORY:
848 txt = "SEC_E_INSUFFICIENT_MEMORY";
849 break;
850 case SEC_E_INTERNAL_ERROR:
851 txt = "SEC_E_INTERNAL_ERROR";
852 break;
853 case SEC_E_INVALID_HANDLE:
854 txt = "SEC_E_INVALID_HANDLE";
855 break;
856 case SEC_E_INVALID_PARAMETER:
857 txt = "SEC_E_INVALID_PARAMETER";
858 break;
859 case SEC_E_INVALID_TOKEN:
860 txt = "SEC_E_INVALID_TOKEN";
861 break;
862 case SEC_E_ISSUING_CA_UNTRUSTED:
863 txt = "SEC_E_ISSUING_CA_UNTRUSTED";
864 break;
865 case SEC_E_ISSUING_CA_UNTRUSTED_KDC:
866 txt = "SEC_E_ISSUING_CA_UNTRUSTED_KDC";
867 break;
868 case SEC_E_KDC_CERT_EXPIRED:
869 txt = "SEC_E_KDC_CERT_EXPIRED";
870 break;
871 case SEC_E_KDC_CERT_REVOKED:
872 txt = "SEC_E_KDC_CERT_REVOKED";
873 break;
874 case SEC_E_KDC_INVALID_REQUEST:
875 txt = "SEC_E_KDC_INVALID_REQUEST";
876 break;
877 case SEC_E_KDC_UNABLE_TO_REFER:
878 txt = "SEC_E_KDC_UNABLE_TO_REFER";
879 break;
880 case SEC_E_KDC_UNKNOWN_ETYPE:
881 txt = "SEC_E_KDC_UNKNOWN_ETYPE";
882 break;
883 case SEC_E_LOGON_DENIED:
884 txt = "SEC_E_LOGON_DENIED";
885 break;
886 case SEC_E_MAX_REFERRALS_EXCEEDED:
887 txt = "SEC_E_MAX_REFERRALS_EXCEEDED";
888 break;
889 case SEC_E_MESSAGE_ALTERED:
890 txt = "SEC_E_MESSAGE_ALTERED";
891 break;
892 case SEC_E_MULTIPLE_ACCOUNTS:
893 txt = "SEC_E_MULTIPLE_ACCOUNTS";
894 break;
895 case SEC_E_MUST_BE_KDC:
896 txt = "SEC_E_MUST_BE_KDC";
897 break;
898 case SEC_E_NOT_OWNER:
899 txt = "SEC_E_NOT_OWNER";
900 break;
901 case SEC_E_NO_AUTHENTICATING_AUTHORITY:
902 txt = "SEC_E_NO_AUTHENTICATING_AUTHORITY";
903 break;
904 case SEC_E_NO_CREDENTIALS:
905 txt = "SEC_E_NO_CREDENTIALS";
906 break;
907 case SEC_E_NO_IMPERSONATION:
908 txt = "SEC_E_NO_IMPERSONATION";
909 break;
910 case SEC_E_NO_IP_ADDRESSES:
911 txt = "SEC_E_NO_IP_ADDRESSES";
912 break;
913 case SEC_E_NO_KERB_KEY:
914 txt = "SEC_E_NO_KERB_KEY";
915 break;
916 case SEC_E_NO_PA_DATA:
917 txt = "SEC_E_NO_PA_DATA";
918 break;
919 case SEC_E_NO_S4U_PROT_SUPPORT:
920 txt = "SEC_E_NO_S4U_PROT_SUPPORT";
921 break;
922 case SEC_E_NO_TGT_REPLY:
923 txt = "SEC_E_NO_TGT_REPLY";
924 break;
925 case SEC_E_OUT_OF_SEQUENCE:
926 txt = "SEC_E_OUT_OF_SEQUENCE";
927 break;
928 case SEC_E_PKINIT_CLIENT_FAILURE:
929 txt = "SEC_E_PKINIT_CLIENT_FAILURE";
930 break;
931 case SEC_E_PKINIT_NAME_MISMATCH:
932 txt = "SEC_E_PKINIT_NAME_MISMATCH";
933 break;
934 case SEC_E_POLICY_NLTM_ONLY:
935 txt = "SEC_E_POLICY_NLTM_ONLY";
936 break;
937 case SEC_E_QOP_NOT_SUPPORTED:
938 txt = "SEC_E_QOP_NOT_SUPPORTED";
939 break;
940 case SEC_E_REVOCATION_OFFLINE_C:
941 txt = "SEC_E_REVOCATION_OFFLINE_C";
942 break;
943 case SEC_E_REVOCATION_OFFLINE_KDC:
944 txt = "SEC_E_REVOCATION_OFFLINE_KDC";
945 break;
946 case SEC_E_SECPKG_NOT_FOUND:
947 txt = "SEC_E_SECPKG_NOT_FOUND";
948 break;
949 case SEC_E_SECURITY_QOS_FAILED:
950 txt = "SEC_E_SECURITY_QOS_FAILED";
951 break;
952 case SEC_E_SHUTDOWN_IN_PROGRESS:
953 txt = "SEC_E_SHUTDOWN_IN_PROGRESS";
954 break;
955 case SEC_E_SMARTCARD_CERT_EXPIRED:
956 txt = "SEC_E_SMARTCARD_CERT_EXPIRED";
957 break;
958 case SEC_E_SMARTCARD_CERT_REVOKED:
959 txt = "SEC_E_SMARTCARD_CERT_REVOKED";
960 break;
961 case SEC_E_SMARTCARD_LOGON_REQUIRED:
962 txt = "SEC_E_SMARTCARD_LOGON_REQUIRED";
963 break;
964 case SEC_E_STRONG_CRYPTO_NOT_SUPPORTED:
965 txt = "SEC_E_STRONG_CRYPTO_NOT_SUPPORTED";
966 break;
967 case SEC_E_TARGET_UNKNOWN:
968 txt = "SEC_E_TARGET_UNKNOWN";
969 break;
970 case SEC_E_TIME_SKEW:
971 txt = "SEC_E_TIME_SKEW";
972 break;
973 case SEC_E_TOO_MANY_PRINCIPALS:
974 txt = "SEC_E_TOO_MANY_PRINCIPALS";
975 break;
976 case SEC_E_UNFINISHED_CONTEXT_DELETED:
977 txt = "SEC_E_UNFINISHED_CONTEXT_DELETED";
978 break;
979 case SEC_E_UNKNOWN_CREDENTIALS:
980 txt = "SEC_E_UNKNOWN_CREDENTIALS";
981 break;
982 case SEC_E_UNSUPPORTED_FUNCTION:
983 txt = "SEC_E_UNSUPPORTED_FUNCTION";
984 break;
985 case SEC_E_UNSUPPORTED_PREAUTH:
986 txt = "SEC_E_UNSUPPORTED_PREAUTH";
987 break;
988 case SEC_E_UNTRUSTED_ROOT:
989 txt = "SEC_E_UNTRUSTED_ROOT";
990 break;
991 case SEC_E_WRONG_CREDENTIAL_HANDLE:
992 txt = "SEC_E_WRONG_CREDENTIAL_HANDLE";
993 break;
994 case SEC_E_WRONG_PRINCIPAL:
995 txt = "SEC_E_WRONG_PRINCIPAL";
996 break;
997 case SEC_I_COMPLETE_AND_CONTINUE:
998 txt = "SEC_I_COMPLETE_AND_CONTINUE";
999 break;
1000 case SEC_I_COMPLETE_NEEDED:
1001 txt = "SEC_I_COMPLETE_NEEDED";
1002 break;
1003 case SEC_I_CONTEXT_EXPIRED:
1004 txt = "SEC_I_CONTEXT_EXPIRED";
1005 break;
1006 case SEC_I_CONTINUE_NEEDED:
1007 txt = "SEC_I_CONTINUE_NEEDED";
1008 break;
1009 case SEC_I_INCOMPLETE_CREDENTIALS:
1010 txt = "SEC_I_INCOMPLETE_CREDENTIALS";
1011 break;
1012 case SEC_I_LOCAL_LOGON:
1013 txt = "SEC_I_LOCAL_LOGON";
1014 break;
1015 case SEC_I_NO_LSA_CONTEXT:
1016 txt = "SEC_I_NO_LSA_CONTEXT";
1017 break;
1018 case SEC_I_RENEGOTIATE:
1019 txt = "SEC_I_RENEGOTIATE";
1020 break;
1021 case SEC_I_SIGNATURE_NEEDED:
1022 txt = "SEC_I_SIGNATURE_NEEDED";
1023 break;
1024 default:
1025 txt = "Unknown error";
1026 }
1027
1028 if(err == SEC_E_OK)
1029 strncpy(outbuf, txt, outmax);
1030 else if(err == SEC_E_ILLEGAL_MESSAGE)
1031 msnprintf(outbuf, outmax,
1032 "SEC_E_ILLEGAL_MESSAGE (0x%08X) - This error usually occurs "
1033 "when a fatal SSL/TLS alert is received (e.g. handshake failed)."
1034 " More detail may be available in the Windows System event log.",
1035 err);
1036 else {
1037 str = txtbuf;
1038 msnprintf(txtbuf, sizeof(txtbuf), "%s (0x%08X)", txt, err);
1039 txtbuf[sizeof(txtbuf)-1] = '\0';
1040
1041 #ifdef _WIN32_WCE
1042 {
1043 wchar_t wbuf[256];
1044 wbuf[0] = L'\0';
1045
1046 if(FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM |
1047 FORMAT_MESSAGE_IGNORE_INSERTS,
1048 NULL, err, LANG_NEUTRAL,
1049 wbuf, sizeof(wbuf)/sizeof(wchar_t), NULL)) {
1050 wcstombs(msgbuf, wbuf, sizeof(msgbuf)-1);
1051 msg_formatted = TRUE;
1052 }
1053 }
1054 #else
1055 if(FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM |
1056 FORMAT_MESSAGE_IGNORE_INSERTS,
1057 NULL, err, LANG_NEUTRAL,
1058 msgbuf, sizeof(msgbuf)-1, NULL)) {
1059 msg_formatted = TRUE;
1060 }
1061 #endif
1062 if(msg_formatted) {
1063 msgbuf[sizeof(msgbuf)-1] = '\0';
1064 /* strip trailing '\r\n' or '\n' */
1065 p = strrchr(msgbuf, '\n');
1066 if(p && (p - msgbuf) >= 2)
1067 *p = '\0';
1068 p = strrchr(msgbuf, '\r');
1069 if(p && (p - msgbuf) >= 1)
1070 *p = '\0';
1071 msg = msgbuf;
1072 }
1073 if(msg)
1074 msnprintf(outbuf, outmax, "%s - %s", str, msg);
1075 else
1076 strncpy(outbuf, str, outmax);
1077 }
1078
1079 #else
1080
1081 if(err == SEC_E_OK)
1082 txt = "No error";
1083 else
1084 txt = "Error";
1085
1086 strncpy(outbuf, txt, outmax);
1087
1088 #endif
1089
1090 outbuf[outmax] = '\0';
1091
1092 if(errno != old_errno)
1093 errno = old_errno;
1094
1095 #ifdef PRESERVE_WINDOWS_ERROR_CODE
1096 if(old_win_err != GetLastError())
1097 SetLastError(old_win_err);
1098 #endif
1099
1100 return outbuf;
1101 }
1102 #endif /* USE_WINDOWS_SSPI */
1103