source: UsbWattMeter/trunk/curl-7.47.1/lib/strerror.c@ 167

Last change on this file since 167 was 167, checked in by coas-nagasima, 8 years ago

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1/***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 2004 - 2015, 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_LIBIDN
39#include <idna.h>
40#endif
41
42#ifdef USE_WINDOWS_SSPI
43#include "curl_sspi.h"
44#endif
45
46#include "strerror.h"
47#include "curl_printf.h"
48#include "curl_memory.h"
49/* The last #include file should be: */
50#include "memdebug.h"
51
52const char *
53curl_easy_strerror(CURLcode error)
54{
55#ifndef CURL_DISABLE_VERBOSE_STRINGS
56 switch (error) {
57 case CURLE_OK:
58 return "No error";
59
60 case CURLE_UNSUPPORTED_PROTOCOL:
61 return "Unsupported protocol";
62
63 case CURLE_FAILED_INIT:
64 return "Failed initialization";
65
66 case CURLE_URL_MALFORMAT:
67 return "URL using bad/illegal format or missing URL";
68
69 case CURLE_NOT_BUILT_IN:
70 return "A requested feature, protocol or option was not found built-in in"
71 " this libcurl due to a build-time decision.";
72
73 case CURLE_COULDNT_RESOLVE_PROXY:
74 return "Couldn't resolve proxy name";
75
76 case CURLE_COULDNT_RESOLVE_HOST:
77 return "Couldn't resolve host name";
78
79 case CURLE_COULDNT_CONNECT:
80 return "Couldn't connect to server";
81
82 case CURLE_FTP_WEIRD_SERVER_REPLY:
83 return "FTP: weird server reply";
84
85 case CURLE_REMOTE_ACCESS_DENIED:
86 return "Access denied to remote resource";
87
88 case CURLE_FTP_ACCEPT_FAILED:
89 return "FTP: The server failed to connect to data port";
90
91 case CURLE_FTP_ACCEPT_TIMEOUT:
92 return "FTP: Accepting server connect has timed out";
93
94 case CURLE_FTP_PRET_FAILED:
95 return "FTP: The server did not accept the PRET command.";
96
97 case CURLE_FTP_WEIRD_PASS_REPLY:
98 return "FTP: unknown PASS reply";
99
100 case CURLE_FTP_WEIRD_PASV_REPLY:
101 return "FTP: unknown PASV reply";
102
103 case CURLE_FTP_WEIRD_227_FORMAT:
104 return "FTP: unknown 227 response format";
105
106 case CURLE_FTP_CANT_GET_HOST:
107 return "FTP: can't figure out the host in the PASV response";
108
109 case CURLE_HTTP2:
110 return "Error in the HTTP2 framing layer";
111
112 case CURLE_FTP_COULDNT_SET_TYPE:
113 return "FTP: couldn't set file type";
114
115 case CURLE_PARTIAL_FILE:
116 return "Transferred a partial file";
117
118 case CURLE_FTP_COULDNT_RETR_FILE:
119 return "FTP: couldn't retrieve (RETR failed) the specified file";
120
121 case CURLE_QUOTE_ERROR:
122 return "Quote command returned error";
123
124 case CURLE_HTTP_RETURNED_ERROR:
125 return "HTTP response code said error";
126
127 case CURLE_WRITE_ERROR:
128 return "Failed writing received data to disk/application";
129
130 case CURLE_UPLOAD_FAILED:
131 return "Upload failed (at start/before it took off)";
132
133 case CURLE_READ_ERROR:
134 return "Failed to open/read local data from file/application";
135
136 case CURLE_OUT_OF_MEMORY:
137 return "Out of memory";
138
139 case CURLE_OPERATION_TIMEDOUT:
140 return "Timeout was reached";
141
142 case CURLE_FTP_PORT_FAILED:
143 return "FTP: command PORT failed";
144
145 case CURLE_FTP_COULDNT_USE_REST:
146 return "FTP: command REST failed";
147
148 case CURLE_RANGE_ERROR:
149 return "Requested range was not delivered by the server";
150
151 case CURLE_HTTP_POST_ERROR:
152 return "Internal problem setting up the POST";
153
154 case CURLE_SSL_CONNECT_ERROR:
155 return "SSL connect error";
156
157 case CURLE_BAD_DOWNLOAD_RESUME:
158 return "Couldn't resume download";
159
160 case CURLE_FILE_COULDNT_READ_FILE:
161 return "Couldn't read a file:// file";
162
163 case CURLE_LDAP_CANNOT_BIND:
164 return "LDAP: cannot bind";
165
166 case CURLE_LDAP_SEARCH_FAILED:
167 return "LDAP: search failed";
168
169 case CURLE_FUNCTION_NOT_FOUND:
170 return "A required function in the library was not found";
171
172 case CURLE_ABORTED_BY_CALLBACK:
173 return "Operation was aborted by an application callback";
174
175 case CURLE_BAD_FUNCTION_ARGUMENT:
176 return "A libcurl function was given a bad argument";
177
178 case CURLE_INTERFACE_FAILED:
179 return "Failed binding local connection end";
180
181 case CURLE_TOO_MANY_REDIRECTS :
182 return "Number of redirects hit maximum amount";
183
184 case CURLE_UNKNOWN_OPTION:
185 return "An unknown option was passed in to libcurl";
186
187 case CURLE_TELNET_OPTION_SYNTAX :
188 return "Malformed telnet option";
189
190 case CURLE_PEER_FAILED_VERIFICATION:
191 return "SSL peer certificate or SSH remote key was not OK";
192
193 case CURLE_GOT_NOTHING:
194 return "Server returned nothing (no headers, no data)";
195
196 case CURLE_SSL_ENGINE_NOTFOUND:
197 return "SSL crypto engine not found";
198
199 case CURLE_SSL_ENGINE_SETFAILED:
200 return "Can not set SSL crypto engine as default";
201
202 case CURLE_SSL_ENGINE_INITFAILED:
203 return "Failed to initialise SSL crypto engine";
204
205 case CURLE_SEND_ERROR:
206 return "Failed sending data to the peer";
207
208 case CURLE_RECV_ERROR:
209 return "Failure when receiving data from the peer";
210
211 case CURLE_SSL_CERTPROBLEM:
212 return "Problem with the local SSL certificate";
213
214 case CURLE_SSL_CIPHER:
215 return "Couldn't use specified SSL cipher";
216
217 case CURLE_SSL_CACERT:
218 return "Peer certificate cannot be authenticated with given CA "
219 "certificates";
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 /* error codes not used by current libcurl */
309 case CURLE_OBSOLETE20:
310 case CURLE_OBSOLETE24:
311 case CURLE_OBSOLETE29:
312 case CURLE_OBSOLETE32:
313 case CURLE_OBSOLETE40:
314 case CURLE_OBSOLETE44:
315 case CURLE_OBSOLETE46:
316 case CURLE_OBSOLETE50:
317 case CURLE_OBSOLETE57:
318 case CURL_LAST:
319 break;
320 }
321 /*
322 * By using a switch, gcc -Wall will complain about enum values
323 * which do not appear, helping keep this function up-to-date.
324 * By using gcc -Wall -Werror, you can't forget.
325 *
326 * A table would not have the same benefit. Most compilers will
327 * generate code very similar to a table in any case, so there
328 * is little performance gain from a table. And something is broken
329 * for the user's application, anyways, so does it matter how fast
330 * it _doesn't_ work?
331 *
332 * The line number for the error will be near this comment, which
333 * is why it is here, and not at the start of the switch.
334 */
335 return "Unknown error";
336#else
337 if(!error)
338 return "No error";
339 else
340 return "Error";
341#endif
342}
343
344const char *
345curl_multi_strerror(CURLMcode error)
346{
347#ifndef CURL_DISABLE_VERBOSE_STRINGS
348 switch (error) {
349 case CURLM_CALL_MULTI_PERFORM:
350 return "Please call curl_multi_perform() soon";
351
352 case CURLM_OK:
353 return "No error";
354
355 case CURLM_BAD_HANDLE:
356 return "Invalid multi handle";
357
358 case CURLM_BAD_EASY_HANDLE:
359 return "Invalid easy handle";
360
361 case CURLM_OUT_OF_MEMORY:
362 return "Out of memory";
363
364 case CURLM_INTERNAL_ERROR:
365 return "Internal error";
366
367 case CURLM_BAD_SOCKET:
368 return "Invalid socket argument";
369
370 case CURLM_UNKNOWN_OPTION:
371 return "Unknown option";
372
373 case CURLM_ADDED_ALREADY:
374 return "The easy handle is already added to a multi handle";
375
376 case CURLM_LAST:
377 break;
378 }
379
380 return "Unknown error";
381#else
382 if(error == CURLM_OK)
383 return "No error";
384 else
385 return "Error";
386#endif
387}
388
389const char *
390curl_share_strerror(CURLSHcode error)
391{
392#ifndef CURL_DISABLE_VERBOSE_STRINGS
393 switch (error) {
394 case CURLSHE_OK:
395 return "No error";
396
397 case CURLSHE_BAD_OPTION:
398 return "Unknown share option";
399
400 case CURLSHE_IN_USE:
401 return "Share currently in use";
402
403 case CURLSHE_INVALID:
404 return "Invalid share handle";
405
406 case CURLSHE_NOMEM:
407 return "Out of memory";
408
409 case CURLSHE_NOT_BUILT_IN:
410 return "Feature not enabled in this library";
411
412 case CURLSHE_LAST:
413 break;
414 }
415
416 return "CURLSHcode unknown";
417#else
418 if(error == CURLSHE_OK)
419 return "No error";
420 else
421 return "Error";
422#endif
423}
424
425#ifdef USE_WINSOCK
426
427/* This function handles most / all (?) Winsock errors cURL is able to produce.
428 */
429static const char *
430get_winsock_error (int err, char *buf, size_t len)
431{
432 const char *p;
433
434#ifndef CURL_DISABLE_VERBOSE_STRINGS
435 switch (err) {
436 case WSAEINTR:
437 p = "Call interrupted";
438 break;
439 case WSAEBADF:
440 p = "Bad file";
441 break;
442 case WSAEACCES:
443 p = "Bad access";
444 break;
445 case WSAEFAULT:
446 p = "Bad argument";
447 break;
448 case WSAEINVAL:
449 p = "Invalid arguments";
450 break;
451 case WSAEMFILE:
452 p = "Out of file descriptors";
453 break;
454 case WSAEWOULDBLOCK:
455 p = "Call would block";
456 break;
457 case WSAEINPROGRESS:
458 case WSAEALREADY:
459 p = "Blocking call in progress";
460 break;
461 case WSAENOTSOCK:
462 p = "Descriptor is not a socket";
463 break;
464 case WSAEDESTADDRREQ:
465 p = "Need destination address";
466 break;
467 case WSAEMSGSIZE:
468 p = "Bad message size";
469 break;
470 case WSAEPROTOTYPE:
471 p = "Bad protocol";
472 break;
473 case WSAENOPROTOOPT:
474 p = "Protocol option is unsupported";
475 break;
476 case WSAEPROTONOSUPPORT:
477 p = "Protocol is unsupported";
478 break;
479 case WSAESOCKTNOSUPPORT:
480 p = "Socket is unsupported";
481 break;
482 case WSAEOPNOTSUPP:
483 p = "Operation not supported";
484 break;
485 case WSAEAFNOSUPPORT:
486 p = "Address family not supported";
487 break;
488 case WSAEPFNOSUPPORT:
489 p = "Protocol family not supported";
490 break;
491 case WSAEADDRINUSE:
492 p = "Address already in use";
493 break;
494 case WSAEADDRNOTAVAIL:
495 p = "Address not available";
496 break;
497 case WSAENETDOWN:
498 p = "Network down";
499 break;
500 case WSAENETUNREACH:
501 p = "Network unreachable";
502 break;
503 case WSAENETRESET:
504 p = "Network has been reset";
505 break;
506 case WSAECONNABORTED:
507 p = "Connection was aborted";
508 break;
509 case WSAECONNRESET:
510 p = "Connection was reset";
511 break;
512 case WSAENOBUFS:
513 p = "No buffer space";
514 break;
515 case WSAEISCONN:
516 p = "Socket is already connected";
517 break;
518 case WSAENOTCONN:
519 p = "Socket is not connected";
520 break;
521 case WSAESHUTDOWN:
522 p = "Socket has been shut down";
523 break;
524 case WSAETOOMANYREFS:
525 p = "Too many references";
526 break;
527 case WSAETIMEDOUT:
528 p = "Timed out";
529 break;
530 case WSAECONNREFUSED:
531 p = "Connection refused";
532 break;
533 case WSAELOOP:
534 p = "Loop??";
535 break;
536 case WSAENAMETOOLONG:
537 p = "Name too long";
538 break;
539 case WSAEHOSTDOWN:
540 p = "Host down";
541 break;
542 case WSAEHOSTUNREACH:
543 p = "Host unreachable";
544 break;
545 case WSAENOTEMPTY:
546 p = "Not empty";
547 break;
548 case WSAEPROCLIM:
549 p = "Process limit reached";
550 break;
551 case WSAEUSERS:
552 p = "Too many users";
553 break;
554 case WSAEDQUOT:
555 p = "Bad quota";
556 break;
557 case WSAESTALE:
558 p = "Something is stale";
559 break;
560 case WSAEREMOTE:
561 p = "Remote error";
562 break;
563#ifdef WSAEDISCON /* missing in SalfordC! */
564 case WSAEDISCON:
565 p = "Disconnected";
566 break;
567#endif
568 /* Extended Winsock errors */
569 case WSASYSNOTREADY:
570 p = "Winsock library is not ready";
571 break;
572 case WSANOTINITIALISED:
573 p = "Winsock library not initialised";
574 break;
575 case WSAVERNOTSUPPORTED:
576 p = "Winsock version not supported";
577 break;
578
579 /* getXbyY() errors (already handled in herrmsg):
580 * Authoritative Answer: Host not found */
581 case WSAHOST_NOT_FOUND:
582 p = "Host not found";
583 break;
584
585 /* Non-Authoritative: Host not found, or SERVERFAIL */
586 case WSATRY_AGAIN:
587 p = "Host not found, try again";
588 break;
589
590 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
591 case WSANO_RECOVERY:
592 p = "Unrecoverable error in call to nameserver";
593 break;
594
595 /* Valid name, no data record of requested type */
596 case WSANO_DATA:
597 p = "No data record of requested type";
598 break;
599
600 default:
601 return NULL;
602 }
603#else
604 if(!err)
605 return NULL;
606 else
607 p = "error";
608#endif
609 strncpy (buf, p, len);
610 buf [len-1] = '\0';
611 return buf;
612}
613#endif /* USE_WINSOCK */
614
615/*
616 * Our thread-safe and smart strerror() replacement.
617 *
618 * The 'err' argument passed in to this function MUST be a true errno number
619 * as reported on this system. We do no range checking on the number before
620 * we pass it to the "number-to-message" conversion function and there might
621 * be systems that don't do proper range checking in there themselves.
622 *
623 * We don't do range checking (on systems other than Windows) since there is
624 * no good reliable and portable way to do it.
625 */
626const char *Curl_strerror(struct connectdata *conn, int err)
627{
628 char *buf, *p;
629 size_t max;
630 int old_errno = ERRNO;
631
632 DEBUGASSERT(conn);
633 DEBUGASSERT(err >= 0);
634
635 buf = conn->syserr_buf;
636 max = sizeof(conn->syserr_buf)-1;
637 *buf = '\0';
638
639#ifdef USE_WINSOCK
640
641#ifdef _WIN32_WCE
642 {
643 wchar_t wbuf[256];
644 wbuf[0] = L'\0';
645
646 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err,
647 LANG_NEUTRAL, wbuf, sizeof(wbuf)/sizeof(wchar_t), NULL);
648 wcstombs(buf, wbuf, max);
649 }
650#else
651 /* 'sys_nerr' is the maximum errno number, it is not widely portable */
652 if(err >= 0 && err < sys_nerr)
653 strncpy(buf, strerror(err), max);
654 else {
655 if(!get_winsock_error(err, buf, max) &&
656 !FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err,
657 LANG_NEUTRAL, buf, (DWORD)max, NULL))
658 snprintf(buf, max, "Unknown error %d (%#x)", err, err);
659 }
660#endif
661
662#else /* not USE_WINSOCK coming up */
663
664#if defined(HAVE_STRERROR_R) && defined(HAVE_POSIX_STRERROR_R)
665 /*
666 * The POSIX-style strerror_r() may set errno to ERANGE if insufficient
667 * storage is supplied via 'strerrbuf' and 'buflen' to hold the generated
668 * message string, or EINVAL if 'errnum' is not a valid error number.
669 */
670 if(0 != strerror_r(err, buf, max)) {
671 if('\0' == buf[0])
672 snprintf(buf, max, "Unknown error %d", err);
673 }
674#elif defined(HAVE_STRERROR_R) && defined(HAVE_GLIBC_STRERROR_R)
675 /*
676 * The glibc-style strerror_r() only *might* use the buffer we pass to
677 * the function, but it always returns the error message as a pointer,
678 * so we must copy that string unconditionally (if non-NULL).
679 */
680 {
681 char buffer[256];
682 char *msg = strerror_r(err, buffer, sizeof(buffer));
683 if(msg)
684 strncpy(buf, msg, max);
685 else
686 snprintf(buf, max, "Unknown error %d", err);
687 }
688#elif defined(HAVE_STRERROR_R) && defined(HAVE_VXWORKS_STRERROR_R)
689 /*
690 * The vxworks-style strerror_r() does use the buffer we pass to the function.
691 * The buffer size should be at least NAME_MAX (256)
692 */
693 {
694 char buffer[256];
695 if(OK == strerror_r(err, buffer))
696 strncpy(buf, buffer, max);
697 else
698 snprintf(buf, max, "Unknown error %d", err);
699 }
700#else
701 {
702 char *msg = strerror(err);
703 if(msg)
704 strncpy(buf, msg, max);
705 else
706 snprintf(buf, max, "Unknown error %d", err);
707 }
708#endif
709
710#endif /* end of ! USE_WINSOCK */
711
712 buf[max] = '\0'; /* make sure the string is zero terminated */
713
714 /* strip trailing '\r\n' or '\n'. */
715 if((p = strrchr(buf, '\n')) != NULL && (p - buf) >= 2)
716 *p = '\0';
717 if((p = strrchr(buf, '\r')) != NULL && (p - buf) >= 1)
718 *p = '\0';
719
720 if(old_errno != ERRNO)
721 SET_ERRNO(old_errno);
722
723 return buf;
724}
725
726#ifdef USE_LIBIDN
727/*
728 * Return error-string for libidn status as returned from idna_to_ascii_lz().
729 */
730const char *Curl_idn_strerror (struct connectdata *conn, int err)
731{
732#ifdef HAVE_IDNA_STRERROR
733 (void)conn;
734 return idna_strerror((Idna_rc) err);
735#else
736 const char *str;
737 char *buf;
738 size_t max;
739
740 DEBUGASSERT(conn);
741
742 buf = conn->syserr_buf;
743 max = sizeof(conn->syserr_buf)-1;
744 *buf = '\0';
745
746#ifndef CURL_DISABLE_VERBOSE_STRINGS
747 switch ((Idna_rc)err) {
748 case IDNA_SUCCESS:
749 str = "No error";
750 break;
751 case IDNA_STRINGPREP_ERROR:
752 str = "Error in string preparation";
753 break;
754 case IDNA_PUNYCODE_ERROR:
755 str = "Error in Punycode operation";
756 break;
757 case IDNA_CONTAINS_NON_LDH:
758 str = "Illegal ASCII characters";
759 break;
760 case IDNA_CONTAINS_MINUS:
761 str = "Contains minus";
762 break;
763 case IDNA_INVALID_LENGTH:
764 str = "Invalid output length";
765 break;
766 case IDNA_NO_ACE_PREFIX:
767 str = "No ACE prefix (\"xn--\")";
768 break;
769 case IDNA_ROUNDTRIP_VERIFY_ERROR:
770 str = "Round trip verify error";
771 break;
772 case IDNA_CONTAINS_ACE_PREFIX:
773 str = "Already have ACE prefix (\"xn--\")";
774 break;
775 case IDNA_ICONV_ERROR:
776 str = "Locale conversion failed";
777 break;
778 case IDNA_MALLOC_ERROR:
779 str = "Allocation failed";
780 break;
781 case IDNA_DLOPEN_ERROR:
782 str = "dlopen() error";
783 break;
784 default:
785 snprintf(buf, max, "error %d", err);
786 str = NULL;
787 break;
788 }
789#else
790 if((Idna_rc)err == IDNA_SUCCESS)
791 str = "No error";
792 else
793 str = "Error";
794#endif
795 if(str)
796 strncpy(buf, str, max);
797 buf[max] = '\0';
798 return (buf);
799#endif
800}
801#endif /* USE_LIBIDN */
802
803#ifdef USE_WINDOWS_SSPI
804const char *Curl_sspi_strerror (struct connectdata *conn, int err)
805{
806#ifndef CURL_DISABLE_VERBOSE_STRINGS
807 char txtbuf[80];
808 char msgbuf[sizeof(conn->syserr_buf)];
809 char *p, *str, *msg = NULL;
810 bool msg_formatted = FALSE;
811 int old_errno;
812#endif
813 const char *txt;
814 char *outbuf;
815 size_t outmax;
816
817 DEBUGASSERT(conn);
818
819 outbuf = conn->syserr_buf;
820 outmax = sizeof(conn->syserr_buf)-1;
821 *outbuf = '\0';
822
823#ifndef CURL_DISABLE_VERBOSE_STRINGS
824
825 old_errno = ERRNO;
826
827 switch (err) {
828 case SEC_E_OK:
829 txt = "No error";
830 break;
831 case CRYPT_E_REVOKED:
832 txt = "CRYPT_E_REVOKED";
833 break;
834 case SEC_E_ALGORITHM_MISMATCH:
835 txt = "SEC_E_ALGORITHM_MISMATCH";
836 break;
837 case SEC_E_BAD_BINDINGS:
838 txt = "SEC_E_BAD_BINDINGS";
839 break;
840 case SEC_E_BAD_PKGID:
841 txt = "SEC_E_BAD_PKGID";
842 break;
843 case SEC_E_BUFFER_TOO_SMALL:
844 txt = "SEC_E_BUFFER_TOO_SMALL";
845 break;
846 case SEC_E_CANNOT_INSTALL:
847 txt = "SEC_E_CANNOT_INSTALL";
848 break;
849 case SEC_E_CANNOT_PACK:
850 txt = "SEC_E_CANNOT_PACK";
851 break;
852 case SEC_E_CERT_EXPIRED:
853 txt = "SEC_E_CERT_EXPIRED";
854 break;
855 case SEC_E_CERT_UNKNOWN:
856 txt = "SEC_E_CERT_UNKNOWN";
857 break;
858 case SEC_E_CERT_WRONG_USAGE:
859 txt = "SEC_E_CERT_WRONG_USAGE";
860 break;
861 case SEC_E_CONTEXT_EXPIRED:
862 txt = "SEC_E_CONTEXT_EXPIRED";
863 break;
864 case SEC_E_CROSSREALM_DELEGATION_FAILURE:
865 txt = "SEC_E_CROSSREALM_DELEGATION_FAILURE";
866 break;
867 case SEC_E_CRYPTO_SYSTEM_INVALID:
868 txt = "SEC_E_CRYPTO_SYSTEM_INVALID";
869 break;
870 case SEC_E_DECRYPT_FAILURE:
871 txt = "SEC_E_DECRYPT_FAILURE";
872 break;
873 case SEC_E_DELEGATION_POLICY:
874 txt = "SEC_E_DELEGATION_POLICY";
875 break;
876 case SEC_E_DELEGATION_REQUIRED:
877 txt = "SEC_E_DELEGATION_REQUIRED";
878 break;
879 case SEC_E_DOWNGRADE_DETECTED:
880 txt = "SEC_E_DOWNGRADE_DETECTED";
881 break;
882 case SEC_E_ENCRYPT_FAILURE:
883 txt = "SEC_E_ENCRYPT_FAILURE";
884 break;
885 case SEC_E_ILLEGAL_MESSAGE:
886 txt = "SEC_E_ILLEGAL_MESSAGE";
887 break;
888 case SEC_E_INCOMPLETE_CREDENTIALS:
889 txt = "SEC_E_INCOMPLETE_CREDENTIALS";
890 break;
891 case SEC_E_INCOMPLETE_MESSAGE:
892 txt = "SEC_E_INCOMPLETE_MESSAGE";
893 break;
894 case SEC_E_INSUFFICIENT_MEMORY:
895 txt = "SEC_E_INSUFFICIENT_MEMORY";
896 break;
897 case SEC_E_INTERNAL_ERROR:
898 txt = "SEC_E_INTERNAL_ERROR";
899 break;
900 case SEC_E_INVALID_HANDLE:
901 txt = "SEC_E_INVALID_HANDLE";
902 break;
903 case SEC_E_INVALID_PARAMETER:
904 txt = "SEC_E_INVALID_PARAMETER";
905 break;
906 case SEC_E_INVALID_TOKEN:
907 txt = "SEC_E_INVALID_TOKEN";
908 break;
909 case SEC_E_ISSUING_CA_UNTRUSTED:
910 txt = "SEC_E_ISSUING_CA_UNTRUSTED";
911 break;
912 case SEC_E_ISSUING_CA_UNTRUSTED_KDC:
913 txt = "SEC_E_ISSUING_CA_UNTRUSTED_KDC";
914 break;
915 case SEC_E_KDC_CERT_EXPIRED:
916 txt = "SEC_E_KDC_CERT_EXPIRED";
917 break;
918 case SEC_E_KDC_CERT_REVOKED:
919 txt = "SEC_E_KDC_CERT_REVOKED";
920 break;
921 case SEC_E_KDC_INVALID_REQUEST:
922 txt = "SEC_E_KDC_INVALID_REQUEST";
923 break;
924 case SEC_E_KDC_UNABLE_TO_REFER:
925 txt = "SEC_E_KDC_UNABLE_TO_REFER";
926 break;
927 case SEC_E_KDC_UNKNOWN_ETYPE:
928 txt = "SEC_E_KDC_UNKNOWN_ETYPE";
929 break;
930 case SEC_E_LOGON_DENIED:
931 txt = "SEC_E_LOGON_DENIED";
932 break;
933 case SEC_E_MAX_REFERRALS_EXCEEDED:
934 txt = "SEC_E_MAX_REFERRALS_EXCEEDED";
935 break;
936 case SEC_E_MESSAGE_ALTERED:
937 txt = "SEC_E_MESSAGE_ALTERED";
938 break;
939 case SEC_E_MULTIPLE_ACCOUNTS:
940 txt = "SEC_E_MULTIPLE_ACCOUNTS";
941 break;
942 case SEC_E_MUST_BE_KDC:
943 txt = "SEC_E_MUST_BE_KDC";
944 break;
945 case SEC_E_NOT_OWNER:
946 txt = "SEC_E_NOT_OWNER";
947 break;
948 case SEC_E_NO_AUTHENTICATING_AUTHORITY:
949 txt = "SEC_E_NO_AUTHENTICATING_AUTHORITY";
950 break;
951 case SEC_E_NO_CREDENTIALS:
952 txt = "SEC_E_NO_CREDENTIALS";
953 break;
954 case SEC_E_NO_IMPERSONATION:
955 txt = "SEC_E_NO_IMPERSONATION";
956 break;
957 case SEC_E_NO_IP_ADDRESSES:
958 txt = "SEC_E_NO_IP_ADDRESSES";
959 break;
960 case SEC_E_NO_KERB_KEY:
961 txt = "SEC_E_NO_KERB_KEY";
962 break;
963 case SEC_E_NO_PA_DATA:
964 txt = "SEC_E_NO_PA_DATA";
965 break;
966 case SEC_E_NO_S4U_PROT_SUPPORT:
967 txt = "SEC_E_NO_S4U_PROT_SUPPORT";
968 break;
969 case SEC_E_NO_TGT_REPLY:
970 txt = "SEC_E_NO_TGT_REPLY";
971 break;
972 case SEC_E_OUT_OF_SEQUENCE:
973 txt = "SEC_E_OUT_OF_SEQUENCE";
974 break;
975 case SEC_E_PKINIT_CLIENT_FAILURE:
976 txt = "SEC_E_PKINIT_CLIENT_FAILURE";
977 break;
978 case SEC_E_PKINIT_NAME_MISMATCH:
979 txt = "SEC_E_PKINIT_NAME_MISMATCH";
980 break;
981 case SEC_E_POLICY_NLTM_ONLY:
982 txt = "SEC_E_POLICY_NLTM_ONLY";
983 break;
984 case SEC_E_QOP_NOT_SUPPORTED:
985 txt = "SEC_E_QOP_NOT_SUPPORTED";
986 break;
987 case SEC_E_REVOCATION_OFFLINE_C:
988 txt = "SEC_E_REVOCATION_OFFLINE_C";
989 break;
990 case SEC_E_REVOCATION_OFFLINE_KDC:
991 txt = "SEC_E_REVOCATION_OFFLINE_KDC";
992 break;
993 case SEC_E_SECPKG_NOT_FOUND:
994 txt = "SEC_E_SECPKG_NOT_FOUND";
995 break;
996 case SEC_E_SECURITY_QOS_FAILED:
997 txt = "SEC_E_SECURITY_QOS_FAILED";
998 break;
999 case SEC_E_SHUTDOWN_IN_PROGRESS:
1000 txt = "SEC_E_SHUTDOWN_IN_PROGRESS";
1001 break;
1002 case SEC_E_SMARTCARD_CERT_EXPIRED:
1003 txt = "SEC_E_SMARTCARD_CERT_EXPIRED";
1004 break;
1005 case SEC_E_SMARTCARD_CERT_REVOKED:
1006 txt = "SEC_E_SMARTCARD_CERT_REVOKED";
1007 break;
1008 case SEC_E_SMARTCARD_LOGON_REQUIRED:
1009 txt = "SEC_E_SMARTCARD_LOGON_REQUIRED";
1010 break;
1011 case SEC_E_STRONG_CRYPTO_NOT_SUPPORTED:
1012 txt = "SEC_E_STRONG_CRYPTO_NOT_SUPPORTED";
1013 break;
1014 case SEC_E_TARGET_UNKNOWN:
1015 txt = "SEC_E_TARGET_UNKNOWN";
1016 break;
1017 case SEC_E_TIME_SKEW:
1018 txt = "SEC_E_TIME_SKEW";
1019 break;
1020 case SEC_E_TOO_MANY_PRINCIPALS:
1021 txt = "SEC_E_TOO_MANY_PRINCIPALS";
1022 break;
1023 case SEC_E_UNFINISHED_CONTEXT_DELETED:
1024 txt = "SEC_E_UNFINISHED_CONTEXT_DELETED";
1025 break;
1026 case SEC_E_UNKNOWN_CREDENTIALS:
1027 txt = "SEC_E_UNKNOWN_CREDENTIALS";
1028 break;
1029 case SEC_E_UNSUPPORTED_FUNCTION:
1030 txt = "SEC_E_UNSUPPORTED_FUNCTION";
1031 break;
1032 case SEC_E_UNSUPPORTED_PREAUTH:
1033 txt = "SEC_E_UNSUPPORTED_PREAUTH";
1034 break;
1035 case SEC_E_UNTRUSTED_ROOT:
1036 txt = "SEC_E_UNTRUSTED_ROOT";
1037 break;
1038 case SEC_E_WRONG_CREDENTIAL_HANDLE:
1039 txt = "SEC_E_WRONG_CREDENTIAL_HANDLE";
1040 break;
1041 case SEC_E_WRONG_PRINCIPAL:
1042 txt = "SEC_E_WRONG_PRINCIPAL";
1043 break;
1044 case SEC_I_COMPLETE_AND_CONTINUE:
1045 txt = "SEC_I_COMPLETE_AND_CONTINUE";
1046 break;
1047 case SEC_I_COMPLETE_NEEDED:
1048 txt = "SEC_I_COMPLETE_NEEDED";
1049 break;
1050 case SEC_I_CONTEXT_EXPIRED:
1051 txt = "SEC_I_CONTEXT_EXPIRED";
1052 break;
1053 case SEC_I_CONTINUE_NEEDED:
1054 txt = "SEC_I_CONTINUE_NEEDED";
1055 break;
1056 case SEC_I_INCOMPLETE_CREDENTIALS:
1057 txt = "SEC_I_INCOMPLETE_CREDENTIALS";
1058 break;
1059 case SEC_I_LOCAL_LOGON:
1060 txt = "SEC_I_LOCAL_LOGON";
1061 break;
1062 case SEC_I_NO_LSA_CONTEXT:
1063 txt = "SEC_I_NO_LSA_CONTEXT";
1064 break;
1065 case SEC_I_RENEGOTIATE:
1066 txt = "SEC_I_RENEGOTIATE";
1067 break;
1068 case SEC_I_SIGNATURE_NEEDED:
1069 txt = "SEC_I_SIGNATURE_NEEDED";
1070 break;
1071 default:
1072 txt = "Unknown error";
1073 }
1074
1075 if(err == SEC_E_OK)
1076 strncpy(outbuf, txt, outmax);
1077 else if(err == SEC_E_ILLEGAL_MESSAGE)
1078 snprintf(outbuf, outmax,
1079 "SEC_E_ILLEGAL_MESSAGE (0x%04X%04X) - This error usually occurs "
1080 "when a fatal SSL/TLS alert is received (e.g. handshake failed). "
1081 "More detail may be available in the Windows System event log.",
1082 (err >> 16) & 0xffff, err & 0xffff);
1083 else {
1084 str = txtbuf;
1085 snprintf(txtbuf, sizeof(txtbuf), "%s (0x%04X%04X)",
1086 txt, (err >> 16) & 0xffff, err & 0xffff);
1087 txtbuf[sizeof(txtbuf)-1] = '\0';
1088
1089#ifdef _WIN32_WCE
1090 {
1091 wchar_t wbuf[256];
1092 wbuf[0] = L'\0';
1093
1094 if(FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM |
1095 FORMAT_MESSAGE_IGNORE_INSERTS,
1096 NULL, err, LANG_NEUTRAL,
1097 wbuf, sizeof(wbuf)/sizeof(wchar_t), NULL)) {
1098 wcstombs(msgbuf, wbuf, sizeof(msgbuf)-1);
1099 msg_formatted = TRUE;
1100 }
1101 }
1102#else
1103 if(FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM |
1104 FORMAT_MESSAGE_IGNORE_INSERTS,
1105 NULL, err, LANG_NEUTRAL,
1106 msgbuf, sizeof(msgbuf)-1, NULL)) {
1107 msg_formatted = TRUE;
1108 }
1109#endif
1110 if(msg_formatted) {
1111 msgbuf[sizeof(msgbuf)-1] = '\0';
1112 /* strip trailing '\r\n' or '\n' */
1113 if((p = strrchr(msgbuf, '\n')) != NULL && (p - msgbuf) >= 2)
1114 *p = '\0';
1115 if((p = strrchr(msgbuf, '\r')) != NULL && (p - msgbuf) >= 1)
1116 *p = '\0';
1117 msg = msgbuf;
1118 }
1119 if(msg)
1120 snprintf(outbuf, outmax, "%s - %s", str, msg);
1121 else
1122 strncpy(outbuf, str, outmax);
1123 }
1124
1125 if(old_errno != ERRNO)
1126 SET_ERRNO(old_errno);
1127
1128#else
1129
1130 if(err == SEC_E_OK)
1131 txt = "No error";
1132 else
1133 txt = "Error";
1134
1135 strncpy(outbuf, txt, outmax);
1136
1137#endif
1138
1139 outbuf[outmax] = '\0';
1140
1141 return outbuf;
1142}
1143#endif /* USE_WINDOWS_SSPI */
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