1 /*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 2004 - 2016, Daniel Stenberg, <daniel (at) 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 /* 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 const char * 53 curl_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 case CURLE_HTTP2_STREAM: 309 return "Stream error in the HTTP/2 framing layer"; 310 311 /* error codes not used by current libcurl */ 312 case CURLE_OBSOLETE20: 313 case CURLE_OBSOLETE24: 314 case CURLE_OBSOLETE29: 315 case CURLE_OBSOLETE32: 316 case CURLE_OBSOLETE40: 317 case CURLE_OBSOLETE44: 318 case CURLE_OBSOLETE46: 319 case CURLE_OBSOLETE50: 320 case CURLE_OBSOLETE57: 321 case CURL_LAST: 322 break; 323 } 324 /* 325 * By using a switch, gcc -Wall will complain about enum values 326 * which do not appear, helping keep this function up-to-date. 327 * By using gcc -Wall -Werror, you can't forget. 328 * 329 * A table would not have the same benefit. Most compilers will 330 * generate code very similar to a table in any case, so there 331 * is little performance gain from a table. And something is broken 332 * for the user's application, anyways, so does it matter how fast 333 * it _doesn't_ work? 334 * 335 * The line number for the error will be near this comment, which 336 * is why it is here, and not at the start of the switch. 337 */ 338 return "Unknown error"; 339 #else 340 if(!error) 341 return "No error"; 342 else 343 return "Error"; 344 #endif 345 } 346 347 const char * 348 curl_multi_strerror(CURLMcode error) 349 { 350 #ifndef CURL_DISABLE_VERBOSE_STRINGS 351 switch (error) { 352 case CURLM_CALL_MULTI_PERFORM: 353 return "Please call curl_multi_perform() soon"; 354 355 case CURLM_OK: 356 return "No error"; 357 358 case CURLM_BAD_HANDLE: 359 return "Invalid multi handle"; 360 361 case CURLM_BAD_EASY_HANDLE: 362 return "Invalid easy handle"; 363 364 case CURLM_OUT_OF_MEMORY: 365 return "Out of memory"; 366 367 case CURLM_INTERNAL_ERROR: 368 return "Internal error"; 369 370 case CURLM_BAD_SOCKET: 371 return "Invalid socket argument"; 372 373 case CURLM_UNKNOWN_OPTION: 374 return "Unknown option"; 375 376 case CURLM_ADDED_ALREADY: 377 return "The easy handle is already added to a multi handle"; 378 379 case CURLM_LAST: 380 break; 381 } 382 383 return "Unknown error"; 384 #else 385 if(error == CURLM_OK) 386 return "No error"; 387 else 388 return "Error"; 389 #endif 390 } 391 392 const char * 393 curl_share_strerror(CURLSHcode error) 394 { 395 #ifndef CURL_DISABLE_VERBOSE_STRINGS 396 switch (error) { 397 case CURLSHE_OK: 398 return "No error"; 399 400 case CURLSHE_BAD_OPTION: 401 return "Unknown share option"; 402 403 case CURLSHE_IN_USE: 404 return "Share currently in use"; 405 406 case CURLSHE_INVALID: 407 return "Invalid share handle"; 408 409 case CURLSHE_NOMEM: 410 return "Out of memory"; 411 412 case CURLSHE_NOT_BUILT_IN: 413 return "Feature not enabled in this library"; 414 415 case CURLSHE_LAST: 416 break; 417 } 418 419 return "CURLSHcode unknown"; 420 #else 421 if(error == CURLSHE_OK) 422 return "No error"; 423 else 424 return "Error"; 425 #endif 426 } 427 428 #ifdef USE_WINSOCK 429 430 /* This function handles most / all (?) Winsock errors cURL is able to produce. 431 */ 432 static const char * 433 get_winsock_error (int err, char *buf, size_t len) 434 { 435 const char *p; 436 437 #ifndef CURL_DISABLE_VERBOSE_STRINGS 438 switch (err) { 439 case WSAEINTR: 440 p = "Call interrupted"; 441 break; 442 case WSAEBADF: 443 p = "Bad file"; 444 break; 445 case WSAEACCES: 446 p = "Bad access"; 447 break; 448 case WSAEFAULT: 449 p = "Bad argument"; 450 break; 451 case WSAEINVAL: 452 p = "Invalid arguments"; 453 break; 454 case WSAEMFILE: 455 p = "Out of file descriptors"; 456 break; 457 case WSAEWOULDBLOCK: 458 p = "Call would block"; 459 break; 460 case WSAEINPROGRESS: 461 case WSAEALREADY: 462 p = "Blocking call in progress"; 463 break; 464 case WSAENOTSOCK: 465 p = "Descriptor is not a socket"; 466 break; 467 case WSAEDESTADDRREQ: 468 p = "Need destination address"; 469 break; 470 case WSAEMSGSIZE: 471 p = "Bad message size"; 472 break; 473 case WSAEPROTOTYPE: 474 p = "Bad protocol"; 475 break; 476 case WSAENOPROTOOPT: 477 p = "Protocol option is unsupported"; 478 break; 479 case WSAEPROTONOSUPPORT: 480 p = "Protocol is unsupported"; 481 break; 482 case WSAESOCKTNOSUPPORT: 483 p = "Socket is unsupported"; 484 break; 485 case WSAEOPNOTSUPP: 486 p = "Operation not supported"; 487 break; 488 case WSAEAFNOSUPPORT: 489 p = "Address family not supported"; 490 break; 491 case WSAEPFNOSUPPORT: 492 p = "Protocol family not supported"; 493 break; 494 case WSAEADDRINUSE: 495 p = "Address already in use"; 496 break; 497 case WSAEADDRNOTAVAIL: 498 p = "Address not available"; 499 break; 500 case WSAENETDOWN: 501 p = "Network down"; 502 break; 503 case WSAENETUNREACH: 504 p = "Network unreachable"; 505 break; 506 case WSAENETRESET: 507 p = "Network has been reset"; 508 break; 509 case WSAECONNABORTED: 510 p = "Connection was aborted"; 511 break; 512 case WSAECONNRESET: 513 p = "Connection was reset"; 514 break; 515 case WSAENOBUFS: 516 p = "No buffer space"; 517 break; 518 case WSAEISCONN: 519 p = "Socket is already connected"; 520 break; 521 case WSAENOTCONN: 522 p = "Socket is not connected"; 523 break; 524 case WSAESHUTDOWN: 525 p = "Socket has been shut down"; 526 break; 527 case WSAETOOMANYREFS: 528 p = "Too many references"; 529 break; 530 case WSAETIMEDOUT: 531 p = "Timed out"; 532 break; 533 case WSAECONNREFUSED: 534 p = "Connection refused"; 535 break; 536 case WSAELOOP: 537 p = "Loop??"; 538 break; 539 case WSAENAMETOOLONG: 540 p = "Name too long"; 541 break; 542 case WSAEHOSTDOWN: 543 p = "Host down"; 544 break; 545 case WSAEHOSTUNREACH: 546 p = "Host unreachable"; 547 break; 548 case WSAENOTEMPTY: 549 p = "Not empty"; 550 break; 551 case WSAEPROCLIM: 552 p = "Process limit reached"; 553 break; 554 case WSAEUSERS: 555 p = "Too many users"; 556 break; 557 case WSAEDQUOT: 558 p = "Bad quota"; 559 break; 560 case WSAESTALE: 561 p = "Something is stale"; 562 break; 563 case WSAEREMOTE: 564 p = "Remote error"; 565 break; 566 #ifdef WSAEDISCON /* missing in SalfordC! */ 567 case WSAEDISCON: 568 p = "Disconnected"; 569 break; 570 #endif 571 /* Extended Winsock errors */ 572 case WSASYSNOTREADY: 573 p = "Winsock library is not ready"; 574 break; 575 case WSANOTINITIALISED: 576 p = "Winsock library not initialised"; 577 break; 578 case WSAVERNOTSUPPORTED: 579 p = "Winsock version not supported"; 580 break; 581 582 /* getXbyY() errors (already handled in herrmsg): 583 * Authoritative Answer: Host not found */ 584 case WSAHOST_NOT_FOUND: 585 p = "Host not found"; 586 break; 587 588 /* Non-Authoritative: Host not found, or SERVERFAIL */ 589 case WSATRY_AGAIN: 590 p = "Host not found, try again"; 591 break; 592 593 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 594 case WSANO_RECOVERY: 595 p = "Unrecoverable error in call to nameserver"; 596 break; 597 598 /* Valid name, no data record of requested type */ 599 case WSANO_DATA: 600 p = "No data record of requested type"; 601 break; 602 603 default: 604 return NULL; 605 } 606 #else 607 if(!err) 608 return NULL; 609 else 610 p = "error"; 611 #endif 612 strncpy (buf, p, len); 613 buf [len-1] = '\0'; 614 return buf; 615 } 616 #endif /* USE_WINSOCK */ 617 618 /* 619 * Our thread-safe and smart strerror() replacement. 620 * 621 * The 'err' argument passed in to this function MUST be a true errno number 622 * as reported on this system. We do no range checking on the number before 623 * we pass it to the "number-to-message" conversion function and there might 624 * be systems that don't do proper range checking in there themselves. 625 * 626 * We don't do range checking (on systems other than Windows) since there is 627 * no good reliable and portable way to do it. 628 */ 629 const char *Curl_strerror(struct connectdata *conn, int err) 630 { 631 char *buf, *p; 632 size_t max; 633 int old_errno = ERRNO; 634 635 DEBUGASSERT(conn); 636 DEBUGASSERT(err >= 0); 637 638 buf = conn->syserr_buf; 639 max = sizeof(conn->syserr_buf)-1; 640 *buf = '\0'; 641 642 #ifdef USE_WINSOCK 643 644 #ifdef _WIN32_WCE 645 { 646 wchar_t wbuf[256]; 647 wbuf[0] = L'\0'; 648 649 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err, 650 LANG_NEUTRAL, wbuf, sizeof(wbuf)/sizeof(wchar_t), NULL); 651 wcstombs(buf, wbuf, max); 652 } 653 #else 654 /* 'sys_nerr' is the maximum errno number, it is not widely portable */ 655 if(err >= 0 && err < sys_nerr) 656 strncpy(buf, strerror(err), max); 657 else { 658 if(!get_winsock_error(err, buf, max) && 659 !FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err, 660 LANG_NEUTRAL, buf, (DWORD)max, NULL)) 661 snprintf(buf, max, "Unknown error %d (%#x)", err, err); 662 } 663 #endif 664 665 #else /* not USE_WINSOCK coming up */ 666 667 #if defined(HAVE_STRERROR_R) && defined(HAVE_POSIX_STRERROR_R) 668 /* 669 * The POSIX-style strerror_r() may set errno to ERANGE if insufficient 670 * storage is supplied via 'strerrbuf' and 'buflen' to hold the generated 671 * message string, or EINVAL if 'errnum' is not a valid error number. 672 */ 673 if(0 != strerror_r(err, buf, max)) { 674 if('\0' == buf[0]) 675 snprintf(buf, max, "Unknown error %d", err); 676 } 677 #elif defined(HAVE_STRERROR_R) && defined(HAVE_GLIBC_STRERROR_R) 678 /* 679 * The glibc-style strerror_r() only *might* use the buffer we pass to 680 * the function, but it always returns the error message as a pointer, 681 * so we must copy that string unconditionally (if non-NULL). 682 */ 683 { 684 char buffer[256]; 685 char *msg = strerror_r(err, buffer, sizeof(buffer)); 686 if(msg) 687 strncpy(buf, msg, max); 688 else 689 snprintf(buf, max, "Unknown error %d", err); 690 } 691 #elif defined(HAVE_STRERROR_R) && defined(HAVE_VXWORKS_STRERROR_R) 692 /* 693 * The vxworks-style strerror_r() does use the buffer we pass to the function. 694 * The buffer size should be at least NAME_MAX (256) 695 */ 696 { 697 char buffer[256]; 698 if(OK == strerror_r(err, buffer)) 699 strncpy(buf, buffer, max); 700 else 701 snprintf(buf, max, "Unknown error %d", err); 702 } 703 #else 704 { 705 char *msg = strerror(err); 706 if(msg) 707 strncpy(buf, msg, max); 708 else 709 snprintf(buf, max, "Unknown error %d", err); 710 } 711 #endif 712 713 #endif /* end of ! USE_WINSOCK */ 714 715 buf[max] = '\0'; /* make sure the string is zero terminated */ 716 717 /* strip trailing '\r\n' or '\n'. */ 718 if((p = strrchr(buf, '\n')) != NULL && (p - buf) >= 2) 719 *p = '\0'; 720 if((p = strrchr(buf, '\r')) != NULL && (p - buf) >= 1) 721 *p = '\0'; 722 723 if(old_errno != ERRNO) 724 SET_ERRNO(old_errno); 725 726 return buf; 727 } 728 729 #ifdef USE_LIBIDN 730 /* 731 * Return error-string for libidn status as returned from idna_to_ascii_lz(). 732 */ 733 const char *Curl_idn_strerror (struct connectdata *conn, int err) 734 { 735 #ifdef HAVE_IDNA_STRERROR 736 (void)conn; 737 return idna_strerror((Idna_rc) err); 738 #else 739 const char *str; 740 char *buf; 741 size_t max; 742 743 DEBUGASSERT(conn); 744 745 buf = conn->syserr_buf; 746 max = sizeof(conn->syserr_buf)-1; 747 *buf = '\0'; 748 749 #ifndef CURL_DISABLE_VERBOSE_STRINGS 750 switch ((Idna_rc)err) { 751 case IDNA_SUCCESS: 752 str = "No error"; 753 break; 754 case IDNA_STRINGPREP_ERROR: 755 str = "Error in string preparation"; 756 break; 757 case IDNA_PUNYCODE_ERROR: 758 str = "Error in Punycode operation"; 759 break; 760 case IDNA_CONTAINS_NON_LDH: 761 str = "Illegal ASCII characters"; 762 break; 763 case IDNA_CONTAINS_MINUS: 764 str = "Contains minus"; 765 break; 766 case IDNA_INVALID_LENGTH: 767 str = "Invalid output length"; 768 break; 769 case IDNA_NO_ACE_PREFIX: 770 str = "No ACE prefix (\"xn--\")"; 771 break; 772 case IDNA_ROUNDTRIP_VERIFY_ERROR: 773 str = "Round trip verify error"; 774 break; 775 case IDNA_CONTAINS_ACE_PREFIX: 776 str = "Already have ACE prefix (\"xn--\")"; 777 break; 778 case IDNA_ICONV_ERROR: 779 str = "Locale conversion failed"; 780 break; 781 case IDNA_MALLOC_ERROR: 782 str = "Allocation failed"; 783 break; 784 case IDNA_DLOPEN_ERROR: 785 str = "dlopen() error"; 786 break; 787 default: 788 snprintf(buf, max, "error %d", err); 789 str = NULL; 790 break; 791 } 792 #else 793 if((Idna_rc)err == IDNA_SUCCESS) 794 str = "No error"; 795 else 796 str = "Error"; 797 #endif 798 if(str) 799 strncpy(buf, str, max); 800 buf[max] = '\0'; 801 return (buf); 802 #endif 803 } 804 #endif /* USE_LIBIDN */ 805 806 #ifdef USE_WINDOWS_SSPI 807 const char *Curl_sspi_strerror (struct connectdata *conn, int err) 808 { 809 #ifndef CURL_DISABLE_VERBOSE_STRINGS 810 char txtbuf[80]; 811 char msgbuf[sizeof(conn->syserr_buf)]; 812 char *p, *str, *msg = NULL; 813 bool msg_formatted = FALSE; 814 int old_errno; 815 #endif 816 const char *txt; 817 char *outbuf; 818 size_t outmax; 819 820 DEBUGASSERT(conn); 821 822 outbuf = conn->syserr_buf; 823 outmax = sizeof(conn->syserr_buf)-1; 824 *outbuf = '\0'; 825 826 #ifndef CURL_DISABLE_VERBOSE_STRINGS 827 828 old_errno = ERRNO; 829 830 switch (err) { 831 case SEC_E_OK: 832 txt = "No error"; 833 break; 834 case CRYPT_E_REVOKED: 835 txt = "CRYPT_E_REVOKED"; 836 break; 837 case SEC_E_ALGORITHM_MISMATCH: 838 txt = "SEC_E_ALGORITHM_MISMATCH"; 839 break; 840 case SEC_E_BAD_BINDINGS: 841 txt = "SEC_E_BAD_BINDINGS"; 842 break; 843 case SEC_E_BAD_PKGID: 844 txt = "SEC_E_BAD_PKGID"; 845 break; 846 case SEC_E_BUFFER_TOO_SMALL: 847 txt = "SEC_E_BUFFER_TOO_SMALL"; 848 break; 849 case SEC_E_CANNOT_INSTALL: 850 txt = "SEC_E_CANNOT_INSTALL"; 851 break; 852 case SEC_E_CANNOT_PACK: 853 txt = "SEC_E_CANNOT_PACK"; 854 break; 855 case SEC_E_CERT_EXPIRED: 856 txt = "SEC_E_CERT_EXPIRED"; 857 break; 858 case SEC_E_CERT_UNKNOWN: 859 txt = "SEC_E_CERT_UNKNOWN"; 860 break; 861 case SEC_E_CERT_WRONG_USAGE: 862 txt = "SEC_E_CERT_WRONG_USAGE"; 863 break; 864 case SEC_E_CONTEXT_EXPIRED: 865 txt = "SEC_E_CONTEXT_EXPIRED"; 866 break; 867 case SEC_E_CROSSREALM_DELEGATION_FAILURE: 868 txt = "SEC_E_CROSSREALM_DELEGATION_FAILURE"; 869 break; 870 case SEC_E_CRYPTO_SYSTEM_INVALID: 871 txt = "SEC_E_CRYPTO_SYSTEM_INVALID"; 872 break; 873 case SEC_E_DECRYPT_FAILURE: 874 txt = "SEC_E_DECRYPT_FAILURE"; 875 break; 876 case SEC_E_DELEGATION_POLICY: 877 txt = "SEC_E_DELEGATION_POLICY"; 878 break; 879 case SEC_E_DELEGATION_REQUIRED: 880 txt = "SEC_E_DELEGATION_REQUIRED"; 881 break; 882 case SEC_E_DOWNGRADE_DETECTED: 883 txt = "SEC_E_DOWNGRADE_DETECTED"; 884 break; 885 case SEC_E_ENCRYPT_FAILURE: 886 txt = "SEC_E_ENCRYPT_FAILURE"; 887 break; 888 case SEC_E_ILLEGAL_MESSAGE: 889 txt = "SEC_E_ILLEGAL_MESSAGE"; 890 break; 891 case SEC_E_INCOMPLETE_CREDENTIALS: 892 txt = "SEC_E_INCOMPLETE_CREDENTIALS"; 893 break; 894 case SEC_E_INCOMPLETE_MESSAGE: 895 txt = "SEC_E_INCOMPLETE_MESSAGE"; 896 break; 897 case SEC_E_INSUFFICIENT_MEMORY: 898 txt = "SEC_E_INSUFFICIENT_MEMORY"; 899 break; 900 case SEC_E_INTERNAL_ERROR: 901 txt = "SEC_E_INTERNAL_ERROR"; 902 break; 903 case SEC_E_INVALID_HANDLE: 904 txt = "SEC_E_INVALID_HANDLE"; 905 break; 906 case SEC_E_INVALID_PARAMETER: 907 txt = "SEC_E_INVALID_PARAMETER"; 908 break; 909 case SEC_E_INVALID_TOKEN: 910 txt = "SEC_E_INVALID_TOKEN"; 911 break; 912 case SEC_E_ISSUING_CA_UNTRUSTED: 913 txt = "SEC_E_ISSUING_CA_UNTRUSTED"; 914 break; 915 case SEC_E_ISSUING_CA_UNTRUSTED_KDC: 916 txt = "SEC_E_ISSUING_CA_UNTRUSTED_KDC"; 917 break; 918 case SEC_E_KDC_CERT_EXPIRED: 919 txt = "SEC_E_KDC_CERT_EXPIRED"; 920 break; 921 case SEC_E_KDC_CERT_REVOKED: 922 txt = "SEC_E_KDC_CERT_REVOKED"; 923 break; 924 case SEC_E_KDC_INVALID_REQUEST: 925 txt = "SEC_E_KDC_INVALID_REQUEST"; 926 break; 927 case SEC_E_KDC_UNABLE_TO_REFER: 928 txt = "SEC_E_KDC_UNABLE_TO_REFER"; 929 break; 930 case SEC_E_KDC_UNKNOWN_ETYPE: 931 txt = "SEC_E_KDC_UNKNOWN_ETYPE"; 932 break; 933 case SEC_E_LOGON_DENIED: 934 txt = "SEC_E_LOGON_DENIED"; 935 break; 936 case SEC_E_MAX_REFERRALS_EXCEEDED: 937 txt = "SEC_E_MAX_REFERRALS_EXCEEDED"; 938 break; 939 case SEC_E_MESSAGE_ALTERED: 940 txt = "SEC_E_MESSAGE_ALTERED"; 941 break; 942 case SEC_E_MULTIPLE_ACCOUNTS: 943 txt = "SEC_E_MULTIPLE_ACCOUNTS"; 944 break; 945 case SEC_E_MUST_BE_KDC: 946 txt = "SEC_E_MUST_BE_KDC"; 947 break; 948 case SEC_E_NOT_OWNER: 949 txt = "SEC_E_NOT_OWNER"; 950 break; 951 case SEC_E_NO_AUTHENTICATING_AUTHORITY: 952 txt = "SEC_E_NO_AUTHENTICATING_AUTHORITY"; 953 break; 954 case SEC_E_NO_CREDENTIALS: 955 txt = "SEC_E_NO_CREDENTIALS"; 956 break; 957 case SEC_E_NO_IMPERSONATION: 958 txt = "SEC_E_NO_IMPERSONATION"; 959 break; 960 case SEC_E_NO_IP_ADDRESSES: 961 txt = "SEC_E_NO_IP_ADDRESSES"; 962 break; 963 case SEC_E_NO_KERB_KEY: 964 txt = "SEC_E_NO_KERB_KEY"; 965 break; 966 case SEC_E_NO_PA_DATA: 967 txt = "SEC_E_NO_PA_DATA"; 968 break; 969 case SEC_E_NO_S4U_PROT_SUPPORT: 970 txt = "SEC_E_NO_S4U_PROT_SUPPORT"; 971 break; 972 case SEC_E_NO_TGT_REPLY: 973 txt = "SEC_E_NO_TGT_REPLY"; 974 break; 975 case SEC_E_OUT_OF_SEQUENCE: 976 txt = "SEC_E_OUT_OF_SEQUENCE"; 977 break; 978 case SEC_E_PKINIT_CLIENT_FAILURE: 979 txt = "SEC_E_PKINIT_CLIENT_FAILURE"; 980 break; 981 case SEC_E_PKINIT_NAME_MISMATCH: 982 txt = "SEC_E_PKINIT_NAME_MISMATCH"; 983 break; 984 case SEC_E_POLICY_NLTM_ONLY: 985 txt = "SEC_E_POLICY_NLTM_ONLY"; 986 break; 987 case SEC_E_QOP_NOT_SUPPORTED: 988 txt = "SEC_E_QOP_NOT_SUPPORTED"; 989 break; 990 case SEC_E_REVOCATION_OFFLINE_C: 991 txt = "SEC_E_REVOCATION_OFFLINE_C"; 992 break; 993 case SEC_E_REVOCATION_OFFLINE_KDC: 994 txt = "SEC_E_REVOCATION_OFFLINE_KDC"; 995 break; 996 case SEC_E_SECPKG_NOT_FOUND: 997 txt = "SEC_E_SECPKG_NOT_FOUND"; 998 break; 999 case SEC_E_SECURITY_QOS_FAILED: 1000 txt = "SEC_E_SECURITY_QOS_FAILED"; 1001 break; 1002 case SEC_E_SHUTDOWN_IN_PROGRESS: 1003 txt = "SEC_E_SHUTDOWN_IN_PROGRESS"; 1004 break; 1005 case SEC_E_SMARTCARD_CERT_EXPIRED: 1006 txt = "SEC_E_SMARTCARD_CERT_EXPIRED"; 1007 break; 1008 case SEC_E_SMARTCARD_CERT_REVOKED: 1009 txt = "SEC_E_SMARTCARD_CERT_REVOKED"; 1010 break; 1011 case SEC_E_SMARTCARD_LOGON_REQUIRED: 1012 txt = "SEC_E_SMARTCARD_LOGON_REQUIRED"; 1013 break; 1014 case SEC_E_STRONG_CRYPTO_NOT_SUPPORTED: 1015 txt = "SEC_E_STRONG_CRYPTO_NOT_SUPPORTED"; 1016 break; 1017 case SEC_E_TARGET_UNKNOWN: 1018 txt = "SEC_E_TARGET_UNKNOWN"; 1019 break; 1020 case SEC_E_TIME_SKEW: 1021 txt = "SEC_E_TIME_SKEW"; 1022 break; 1023 case SEC_E_TOO_MANY_PRINCIPALS: 1024 txt = "SEC_E_TOO_MANY_PRINCIPALS"; 1025 break; 1026 case SEC_E_UNFINISHED_CONTEXT_DELETED: 1027 txt = "SEC_E_UNFINISHED_CONTEXT_DELETED"; 1028 break; 1029 case SEC_E_UNKNOWN_CREDENTIALS: 1030 txt = "SEC_E_UNKNOWN_CREDENTIALS"; 1031 break; 1032 case SEC_E_UNSUPPORTED_FUNCTION: 1033 txt = "SEC_E_UNSUPPORTED_FUNCTION"; 1034 break; 1035 case SEC_E_UNSUPPORTED_PREAUTH: 1036 txt = "SEC_E_UNSUPPORTED_PREAUTH"; 1037 break; 1038 case SEC_E_UNTRUSTED_ROOT: 1039 txt = "SEC_E_UNTRUSTED_ROOT"; 1040 break; 1041 case SEC_E_WRONG_CREDENTIAL_HANDLE: 1042 txt = "SEC_E_WRONG_CREDENTIAL_HANDLE"; 1043 break; 1044 case SEC_E_WRONG_PRINCIPAL: 1045 txt = "SEC_E_WRONG_PRINCIPAL"; 1046 break; 1047 case SEC_I_COMPLETE_AND_CONTINUE: 1048 txt = "SEC_I_COMPLETE_AND_CONTINUE"; 1049 break; 1050 case SEC_I_COMPLETE_NEEDED: 1051 txt = "SEC_I_COMPLETE_NEEDED"; 1052 break; 1053 case SEC_I_CONTEXT_EXPIRED: 1054 txt = "SEC_I_CONTEXT_EXPIRED"; 1055 break; 1056 case SEC_I_CONTINUE_NEEDED: 1057 txt = "SEC_I_CONTINUE_NEEDED"; 1058 break; 1059 case SEC_I_INCOMPLETE_CREDENTIALS: 1060 txt = "SEC_I_INCOMPLETE_CREDENTIALS"; 1061 break; 1062 case SEC_I_LOCAL_LOGON: 1063 txt = "SEC_I_LOCAL_LOGON"; 1064 break; 1065 case SEC_I_NO_LSA_CONTEXT: 1066 txt = "SEC_I_NO_LSA_CONTEXT"; 1067 break; 1068 case SEC_I_RENEGOTIATE: 1069 txt = "SEC_I_RENEGOTIATE"; 1070 break; 1071 case SEC_I_SIGNATURE_NEEDED: 1072 txt = "SEC_I_SIGNATURE_NEEDED"; 1073 break; 1074 default: 1075 txt = "Unknown error"; 1076 } 1077 1078 if(err == SEC_E_OK) 1079 strncpy(outbuf, txt, outmax); 1080 else if(err == SEC_E_ILLEGAL_MESSAGE) 1081 snprintf(outbuf, outmax, 1082 "SEC_E_ILLEGAL_MESSAGE (0x%08X) - This error usually occurs " 1083 "when a fatal SSL/TLS alert is received (e.g. handshake failed). " 1084 "More detail may be available in the Windows System event log.", 1085 err); 1086 else { 1087 str = txtbuf; 1088 snprintf(txtbuf, sizeof(txtbuf), "%s (0x%08X)", txt, err); 1089 txtbuf[sizeof(txtbuf)-1] = '\0'; 1090 1091 #ifdef _WIN32_WCE 1092 { 1093 wchar_t wbuf[256]; 1094 wbuf[0] = L'\0'; 1095 1096 if(FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | 1097 FORMAT_MESSAGE_IGNORE_INSERTS, 1098 NULL, err, LANG_NEUTRAL, 1099 wbuf, sizeof(wbuf)/sizeof(wchar_t), NULL)) { 1100 wcstombs(msgbuf, wbuf, sizeof(msgbuf)-1); 1101 msg_formatted = TRUE; 1102 } 1103 } 1104 #else 1105 if(FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | 1106 FORMAT_MESSAGE_IGNORE_INSERTS, 1107 NULL, err, LANG_NEUTRAL, 1108 msgbuf, sizeof(msgbuf)-1, NULL)) { 1109 msg_formatted = TRUE; 1110 } 1111 #endif 1112 if(msg_formatted) { 1113 msgbuf[sizeof(msgbuf)-1] = '\0'; 1114 /* strip trailing '\r\n' or '\n' */ 1115 if((p = strrchr(msgbuf, '\n')) != NULL && (p - msgbuf) >= 2) 1116 *p = '\0'; 1117 if((p = strrchr(msgbuf, '\r')) != NULL && (p - msgbuf) >= 1) 1118 *p = '\0'; 1119 msg = msgbuf; 1120 } 1121 if(msg) 1122 snprintf(outbuf, outmax, "%s - %s", str, msg); 1123 else 1124 strncpy(outbuf, str, outmax); 1125 } 1126 1127 if(old_errno != ERRNO) 1128 SET_ERRNO(old_errno); 1129 1130 #else 1131 1132 if(err == SEC_E_OK) 1133 txt = "No error"; 1134 else 1135 txt = "Error"; 1136 1137 strncpy(outbuf, txt, outmax); 1138 1139 #endif 1140 1141 outbuf[outmax] = '\0'; 1142 1143 return outbuf; 1144 } 1145 #endif /* USE_WINDOWS_SSPI */ 1146
