/*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 2004 - 2008, Daniel Stenberg, <daniel@haxx.se>, et al. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms * are also available at http://curl.haxx.se/docs/copyright.html. * * You may opt to use, copy, modify, merge, publish, distribute and/or sell * copies of the Software, and permit persons to whom the Software is * furnished to do so, under the terms of the COPYING file. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * * $Id$ ***************************************************************************/ #include "setup.h" #ifdef HAVE_STRERROR_R # if (!defined(HAVE_POSIX_STRERROR_R) && !defined(HAVE_GLIBC_STRERROR_R)) || \ (defined(HAVE_POSIX_STRERROR_R) && defined(HAVE_GLIBC_STRERROR_R)) # error "strerror_r MUST be either POSIX-style or glibc-style" # endif #endif #include <curl/curl.h> #include <stdlib.h> #include <string.h> #include <errno.h> #ifdef USE_LIBIDN #include <idna.h> #endif #include "strerror.h" #define _MPRINTF_REPLACE /* use our functions only */ #include <curl/mprintf.h> const char * curl_easy_strerror(CURLcode error) { #ifndef CURL_DISABLE_VERBOSE_STRINGS switch (error) { case CURLE_OK: return "No error"; case CURLE_UNSUPPORTED_PROTOCOL: return "Unsupported protocol"; case CURLE_FAILED_INIT: return "Failed initialization"; case CURLE_URL_MALFORMAT: return "URL using bad/illegal format or missing URL"; case CURLE_COULDNT_RESOLVE_PROXY: return "Couldn't resolve proxy name"; case CURLE_COULDNT_RESOLVE_HOST: return "Couldn't resolve host name"; case CURLE_COULDNT_CONNECT: return "Couldn't connect to server"; case CURLE_FTP_WEIRD_SERVER_REPLY: return "FTP: weird server reply"; case CURLE_REMOTE_ACCESS_DENIED: return "Access denied to remote resource"; case CURLE_FTP_WEIRD_PASS_REPLY: return "FTP: unknown PASS reply"; case CURLE_FTP_WEIRD_PASV_REPLY: return "FTP: unknown PASV reply"; case CURLE_FTP_WEIRD_227_FORMAT: return "FTP: unknown 227 response format"; case CURLE_FTP_CANT_GET_HOST: return "FTP: can't figure out the host in the PASV response"; case CURLE_FTP_COULDNT_SET_TYPE: return "FTP: couldn't set file type"; case CURLE_PARTIAL_FILE: return "Transferred a partial file"; case CURLE_FTP_COULDNT_RETR_FILE: return "FTP: couldn't retrieve (RETR failed) the specified file"; case CURLE_QUOTE_ERROR: return "Quote command returned error"; case CURLE_HTTP_RETURNED_ERROR: return "HTTP response code said error"; case CURLE_WRITE_ERROR: return "Failed writing received data to disk/application"; case CURLE_UPLOAD_FAILED: return "Upload failed (at start/before it took off)"; case CURLE_READ_ERROR: return "Failed to open/read local data from file/application"; case CURLE_OUT_OF_MEMORY: return "Out of memory"; case CURLE_OPERATION_TIMEDOUT: return "Timeout was reached"; case CURLE_FTP_PORT_FAILED: return "FTP: command PORT failed"; case CURLE_FTP_COULDNT_USE_REST: return "FTP: command REST failed"; case CURLE_RANGE_ERROR: return "Requested range was not delivered by the server"; case CURLE_HTTP_POST_ERROR: return "Internal problem setting up the POST"; case CURLE_SSL_CONNECT_ERROR: return "SSL connect error"; case CURLE_BAD_DOWNLOAD_RESUME: return "Couldn't resume download"; case CURLE_FILE_COULDNT_READ_FILE: return "Couldn't read a file:// file"; case CURLE_LDAP_CANNOT_BIND: return "LDAP: cannot bind"; case CURLE_LDAP_SEARCH_FAILED: return "LDAP: search failed"; case CURLE_FUNCTION_NOT_FOUND: return "A required function in the library was not found"; case CURLE_ABORTED_BY_CALLBACK: return "Operation was aborted by an application callback"; case CURLE_BAD_FUNCTION_ARGUMENT: return "A libcurl function was given a bad argument"; case CURLE_INTERFACE_FAILED: return "Failed binding local connection end"; case CURLE_TOO_MANY_REDIRECTS : return "Number of redirects hit maximum amount"; case CURLE_UNKNOWN_TELNET_OPTION: return "User specified an unknown telnet option"; case CURLE_TELNET_OPTION_SYNTAX : return "Malformed telnet option"; case CURLE_PEER_FAILED_VERIFICATION: return "SSL peer certificate or SSH md5 fingerprint was not OK"; case CURLE_GOT_NOTHING: return "Server returned nothing (no headers, no data)"; case CURLE_SSL_ENGINE_NOTFOUND: return "SSL crypto engine not found"; case CURLE_SSL_ENGINE_SETFAILED: return "Can not set SSL crypto engine as default"; case CURLE_SSL_ENGINE_INITFAILED: return "Failed to initialise SSL crypto engine"; case CURLE_SEND_ERROR: return "Failed sending data to the peer"; case CURLE_RECV_ERROR: return "Failure when receiving data from the peer"; case CURLE_SSL_CERTPROBLEM: return "Problem with the local SSL certificate"; case CURLE_SSL_CIPHER: return "Couldn't use specified SSL cipher"; case CURLE_SSL_CACERT: return "Peer certificate cannot be authenticated with known CA certificates"; case CURLE_SSL_CACERT_BADFILE: return "Problem with the SSL CA cert (path? access rights?)"; case CURLE_BAD_CONTENT_ENCODING: return "Unrecognized HTTP Content-Encoding"; case CURLE_LDAP_INVALID_URL: return "Invalid LDAP URL"; case CURLE_FILESIZE_EXCEEDED: return "Maximum file size exceeded"; case CURLE_USE_SSL_FAILED: return "Requested SSL level failed"; case CURLE_SSL_SHUTDOWN_FAILED: return "Failed to shut down the SSL connection"; case CURLE_SSL_CRL_BADFILE: return "Failed to load CRL file (path? access rights?, format?)"; case CURLE_SSL_ISSUER_ERROR: return "Issuer check against peer certificate failed"; case CURLE_SEND_FAIL_REWIND: return "Send failed since rewinding of the data stream failed"; case CURLE_LOGIN_DENIED: return "Login denied"; case CURLE_TFTP_NOTFOUND: return "TFTP: File Not Found"; case CURLE_TFTP_PERM: return "TFTP: Access Violation"; case CURLE_REMOTE_DISK_FULL: return "Disk full or allocation exceeded"; case CURLE_TFTP_ILLEGAL: return "TFTP: Illegal operation"; case CURLE_TFTP_UNKNOWNID: return "TFTP: Unknown transfer ID"; case CURLE_REMOTE_FILE_EXISTS: return "Remote file already exists"; case CURLE_TFTP_NOSUCHUSER: return "TFTP: No such user"; case CURLE_CONV_FAILED: return "Conversion failed"; case CURLE_CONV_REQD: return "Caller must register CURLOPT_CONV_ callback options"; case CURLE_REMOTE_FILE_NOT_FOUND: return "Remote file not found"; case CURLE_SSH: return "Error in the SSH layer"; case CURLE_AGAIN: return "Socket not ready for send/recv"; /* error codes not used by current libcurl */ case CURLE_OBSOLETE4: case CURLE_OBSOLETE10: case CURLE_OBSOLETE12: case CURLE_OBSOLETE16: case CURLE_OBSOLETE20: case CURLE_OBSOLETE24: case CURLE_OBSOLETE29: case CURLE_OBSOLETE32: case CURLE_OBSOLETE40: case CURLE_OBSOLETE44: case CURLE_OBSOLETE46: case CURLE_OBSOLETE50: case CURLE_OBSOLETE57: case CURL_LAST: break; } /* * By using a switch, gcc -Wall will complain about enum values * which do not appear, helping keep this function up-to-date. * By using gcc -Wall -Werror, you can't forget. * * A table would not have the same benefit. Most compilers will * generate code very similar to a table in any case, so there * is little performance gain from a table. And something is broken * for the user's application, anyways, so does it matter how fast * it _doesn't_ work? * * The line number for the error will be near this comment, which * is why it is here, and not at the start of the switch. */ return "Unknown error"; #else if(error == CURLE_OK) return "No error"; else return "Error"; #endif } const char * curl_multi_strerror(CURLMcode error) { #ifndef CURL_DISABLE_VERBOSE_STRINGS switch (error) { case CURLM_CALL_MULTI_PERFORM: return "Please call curl_multi_perform() soon"; case CURLM_OK: return "No error"; case CURLM_BAD_HANDLE: return "Invalid multi handle"; case CURLM_BAD_EASY_HANDLE: return "Invalid easy handle"; case CURLM_OUT_OF_MEMORY: return "Out of memory"; case CURLM_INTERNAL_ERROR: return "Internal error"; case CURLM_BAD_SOCKET: return "Invalid socket argument"; case CURLM_UNKNOWN_OPTION: return "Unknown option"; case CURLM_LAST: break; } return "Unknown error"; #else if(error == CURLM_OK) return "No error"; else return "Error"; #endif } const char * curl_share_strerror(CURLSHcode error) { #ifndef CURL_DISABLE_VERBOSE_STRINGS switch (error) { case CURLSHE_OK: return "No error"; case CURLSHE_BAD_OPTION: return "Unknown share option"; case CURLSHE_IN_USE: return "Share currently in use"; case CURLSHE_INVALID: return "Invalid share handle"; case CURLSHE_NOMEM: return "Out of memory"; case CURLSHE_LAST: break; } return "CURLSHcode unknown"; #else if(error == CURLSHE_OK) return "No error"; else return "Error"; #endif } #ifdef USE_WINSOCK /* This function handles most / all (?) Winsock errors cURL is able to produce. */ static const char * get_winsock_error (int err, char *buf, size_t len) { const char *p; #ifndef CURL_DISABLE_VERBOSE_STRINGS switch (err) { case WSAEINTR: p = "Call interrupted"; break; case WSAEBADF: p = "Bad file"; break; case WSAEACCES: p = "Bad access"; break; case WSAEFAULT: p = "Bad argument"; break; case WSAEINVAL: p = "Invalid arguments"; break; case WSAEMFILE: p = "Out of file descriptors"; break; case WSAEWOULDBLOCK: p = "Call would block"; break; case WSAEINPROGRESS: case WSAEALREADY: p = "Blocking call in progress"; break; case WSAENOTSOCK: p = "Descriptor is not a socket"; break; case WSAEDESTADDRREQ: p = "Need destination address"; break; case WSAEMSGSIZE: p = "Bad message size"; break; case WSAEPROTOTYPE: p = "Bad protocol"; break; case WSAENOPROTOOPT: p = "Protocol option is unsupported"; break; case WSAEPROTONOSUPPORT: p = "Protocol is unsupported"; break; case WSAESOCKTNOSUPPORT: p = "Socket is unsupported"; break; case WSAEOPNOTSUPP: p = "Operation not supported"; break; case WSAEAFNOSUPPORT: p = "Address family not supported"; break; case WSAEPFNOSUPPORT: p = "Protocol family not supported"; break; case WSAEADDRINUSE: p = "Address already in use"; break; case WSAEADDRNOTAVAIL: p = "Address not available"; break; case WSAENETDOWN: p = "Network down"; break; case WSAENETUNREACH: p = "Network unreachable"; break; case WSAENETRESET: p = "Network has been reset"; break; case WSAECONNABORTED: p = "Connection was aborted"; break; case WSAECONNRESET: p = "Connection was reset"; break; case WSAENOBUFS: p = "No buffer space"; break; case WSAEISCONN: p = "Socket is already connected"; break; case WSAENOTCONN: p = "Socket is not connected"; break; case WSAESHUTDOWN: p = "Socket has been shut down"; break; case WSAETOOMANYREFS: p = "Too many references"; break; case WSAETIMEDOUT: p = "Timed out"; break; case WSAECONNREFUSED: p = "Connection refused"; break; case WSAELOOP: p = "Loop??"; break; case WSAENAMETOOLONG: p = "Name too long"; break; case WSAEHOSTDOWN: p = "Host down"; break; case WSAEHOSTUNREACH: p = "Host unreachable"; break; case WSAENOTEMPTY: p = "Not empty"; break; case WSAEPROCLIM: p = "Process limit reached"; break; case WSAEUSERS: p = "Too many users"; break; case WSAEDQUOT: p = "Bad quota"; break; case WSAESTALE: p = "Something is stale"; break; case WSAEREMOTE: p = "Remote error"; break; #ifdef WSAEDISCON /* missing in SalfordC! */ case WSAEDISCON: p = "Disconnected"; break; #endif /* Extended Winsock errors */ case WSASYSNOTREADY: p = "Winsock library is not ready"; break; case WSANOTINITIALISED: p = "Winsock library not initialised"; break; case WSAVERNOTSUPPORTED: p = "Winsock version not supported"; break; /* getXbyY() errors (already handled in herrmsg): * Authoritative Answer: Host not found */ case WSAHOST_NOT_FOUND: p = "Host not found"; break; /* Non-Authoritative: Host not found, or SERVERFAIL */ case WSATRY_AGAIN: p = "Host not found, try again"; break; /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ case WSANO_RECOVERY: p = "Unrecoverable error in call to nameserver"; break; /* Valid name, no data record of requested type */ case WSANO_DATA: p = "No data record of requested type"; break; default: return NULL; } #else if(err == CURLE_OK) return NULL; else p = "error"; #endif strncpy (buf, p, len); buf [len-1] = '\0'; return buf; } #endif /* USE_WINSOCK */ /* * Our thread-safe and smart strerror() replacement. * * The 'err' argument passed in to this function MUST be a true errno number * as reported on this system. We do no range checking on the number before * we pass it to the "number-to-message" conversion function and there might * be systems that don't do proper range checking in there themselves. * * We don't do range checking (on systems other than Windows) since there is * no good reliable and portable way to do it. */ const char *Curl_strerror(struct connectdata *conn, int err) { char *buf, *p; size_t max; int old_errno = ERRNO; DEBUGASSERT(conn); DEBUGASSERT(err >= 0); buf = conn->syserr_buf; max = sizeof(conn->syserr_buf)-1; *buf = '\0'; #ifdef USE_WINSOCK #ifdef _WIN32_WCE { wchar_t wbuf[256]; wbuf[0] = L'\0'; FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err, LANG_NEUTRAL, wbuf, sizeof(wbuf)/sizeof(wchar_t), NULL); wcstombs(buf,wbuf,max); } #else /* 'sys_nerr' is the maximum errno number, it is not widely portable */ if(err >= 0 && err < sys_nerr) strncpy(buf, strerror(err), max); else { if(!get_winsock_error(err, buf, max) && !FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err, LANG_NEUTRAL, buf, (DWORD)max, NULL)) snprintf(buf, max, "Unknown error %d (%#x)", err, err); } #endif #else /* not USE_WINSOCK coming up */ #if defined(HAVE_STRERROR_R) && defined(HAVE_POSIX_STRERROR_R) /* * The POSIX-style strerror_r() may set errno to ERANGE if insufficient * storage is supplied via 'strerrbuf' and 'buflen' to hold the generated * message string, or EINVAL if 'errnum' is not a valid error number. */ if(0 != strerror_r(err, buf, max)) { if('\0' == buf[0]) snprintf(buf, max, "Unknown error %d", err); } #elif defined(HAVE_STRERROR_R) && defined(HAVE_GLIBC_STRERROR_R) /* * The glibc-style strerror_r() only *might* use the buffer we pass to * the function, but it always returns the error message as a pointer, * so we must copy that string unconditionally (if non-NULL). */ { char buffer[256]; char *msg = strerror_r(err, buffer, sizeof(buffer)); if(msg) strncpy(buf, msg, max); else snprintf(buf, max, "Unknown error %d", err); } #else { char *msg = strerror(err); if(msg) strncpy(buf, msg, max); else snprintf(buf, max, "Unknown error %d", err); } #endif #endif /* end of ! USE_WINSOCK */ buf[max] = '\0'; /* make sure the string is zero terminated */ /* strip trailing '\r\n' or '\n'. */ if((p = strrchr(buf,'\n')) != NULL && (p - buf) >= 2) *p = '\0'; if((p = strrchr(buf,'\r')) != NULL && (p - buf) >= 1) *p = '\0'; if(old_errno != ERRNO) SET_ERRNO(old_errno); return buf; } #ifdef USE_LIBIDN /* * Return error-string for libidn status as returned from idna_to_ascii_lz(). */ const char *Curl_idn_strerror (struct connectdata *conn, int err) { #ifdef HAVE_IDNA_STRERROR (void)conn; return idna_strerror((Idna_rc) err); #else const char *str; char *buf; size_t max; DEBUGASSERT(conn); buf = conn->syserr_buf; max = sizeof(conn->syserr_buf)-1; *buf = '\0'; #ifndef CURL_DISABLE_VERBOSE_STRINGS switch ((Idna_rc)err) { case IDNA_SUCCESS: str = "No error"; break; case IDNA_STRINGPREP_ERROR: str = "Error in string preparation"; break; case IDNA_PUNYCODE_ERROR: str = "Error in Punycode operation"; break; case IDNA_CONTAINS_NON_LDH: str = "Illegal ASCII characters"; break; case IDNA_CONTAINS_MINUS: str = "Contains minus"; break; case IDNA_INVALID_LENGTH: str = "Invalid output length"; break; case IDNA_NO_ACE_PREFIX: str = "No ACE prefix (\"xn--\")"; break; case IDNA_ROUNDTRIP_VERIFY_ERROR: str = "Round trip verify error"; break; case IDNA_CONTAINS_ACE_PREFIX: str = "Already have ACE prefix (\"xn--\")"; break; case IDNA_ICONV_ERROR: str = "Locale conversion failed"; break; case IDNA_MALLOC_ERROR: str = "Allocation failed"; break; case IDNA_DLOPEN_ERROR: str = "dlopen() error"; break; default: snprintf(buf, max, "error %d", err); str = NULL; break; } #else if((Idna_rc)err == IDNA_SUCCESS) str = "No error"; else str = "Error"; #endif if(str) strncpy(buf, str, max); buf[max] = '\0'; return (buf); #endif } #endif /* USE_LIBIDN */