746 lines
18 KiB
C
746 lines
18 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 2004 - 2008, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* $Id: strerror.c,v 1.54 2008-09-12 10:51:57 yangtse Exp $
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***************************************************************************/
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#include "setup.h"
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#ifdef HAVE_STRERROR_R
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# if (!defined(HAVE_POSIX_STRERROR_R) && !defined(HAVE_GLIBC_STRERROR_R)) || \
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(defined(HAVE_POSIX_STRERROR_R) && defined(HAVE_GLIBC_STRERROR_R))
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# error "strerror_r MUST be either POSIX-style or glibc-style"
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# endif
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#endif
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#include <curl/curl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#ifdef USE_LIBIDN
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#include <idna.h>
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#endif
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#include "strerror.h"
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#define _MPRINTF_REPLACE /* use our functions only */
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#include <curl/mprintf.h>
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const char *
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curl_easy_strerror(CURLcode error)
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{
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#ifndef CURL_DISABLE_VERBOSE_STRINGS
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switch (error) {
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case CURLE_OK:
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return "No error";
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case CURLE_UNSUPPORTED_PROTOCOL:
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return "Unsupported protocol";
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case CURLE_FAILED_INIT:
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return "Failed initialization";
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case CURLE_URL_MALFORMAT:
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return "URL using bad/illegal format or missing URL";
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case CURLE_COULDNT_RESOLVE_PROXY:
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return "Couldn't resolve proxy name";
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case CURLE_COULDNT_RESOLVE_HOST:
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return "Couldn't resolve host name";
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case CURLE_COULDNT_CONNECT:
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return "Couldn't connect to server";
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case CURLE_FTP_WEIRD_SERVER_REPLY:
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return "FTP: weird server reply";
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case CURLE_REMOTE_ACCESS_DENIED:
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return "Access denied to remote resource";
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case CURLE_FTP_WEIRD_PASS_REPLY:
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return "FTP: unknown PASS reply";
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case CURLE_FTP_WEIRD_PASV_REPLY:
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return "FTP: unknown PASV reply";
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case CURLE_FTP_WEIRD_227_FORMAT:
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return "FTP: unknown 227 response format";
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case CURLE_FTP_CANT_GET_HOST:
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return "FTP: can't figure out the host in the PASV response";
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case CURLE_FTP_COULDNT_SET_TYPE:
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return "FTP: couldn't set file type";
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case CURLE_PARTIAL_FILE:
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return "Transferred a partial file";
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case CURLE_FTP_COULDNT_RETR_FILE:
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return "FTP: couldn't retrieve (RETR failed) the specified file";
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case CURLE_QUOTE_ERROR:
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return "Quote command returned error";
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case CURLE_HTTP_RETURNED_ERROR:
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return "HTTP response code said error";
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case CURLE_WRITE_ERROR:
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return "Failed writing received data to disk/application";
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case CURLE_UPLOAD_FAILED:
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return "Upload failed (at start/before it took off)";
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case CURLE_READ_ERROR:
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return "Failed to open/read local data from file/application";
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case CURLE_OUT_OF_MEMORY:
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return "Out of memory";
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case CURLE_OPERATION_TIMEDOUT:
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return "Timeout was reached";
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case CURLE_FTP_PORT_FAILED:
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return "FTP: command PORT failed";
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case CURLE_FTP_COULDNT_USE_REST:
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return "FTP: command REST failed";
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case CURLE_RANGE_ERROR:
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return "Requested range was not delivered by the server";
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case CURLE_HTTP_POST_ERROR:
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return "Internal problem setting up the POST";
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case CURLE_SSL_CONNECT_ERROR:
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return "SSL connect error";
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case CURLE_BAD_DOWNLOAD_RESUME:
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return "Couldn't resume download";
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case CURLE_FILE_COULDNT_READ_FILE:
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return "Couldn't read a file:// file";
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case CURLE_LDAP_CANNOT_BIND:
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return "LDAP: cannot bind";
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case CURLE_LDAP_SEARCH_FAILED:
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return "LDAP: search failed";
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case CURLE_FUNCTION_NOT_FOUND:
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return "A required function in the library was not found";
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case CURLE_ABORTED_BY_CALLBACK:
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return "Operation was aborted by an application callback";
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case CURLE_BAD_FUNCTION_ARGUMENT:
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return "A libcurl function was given a bad argument";
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case CURLE_INTERFACE_FAILED:
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return "Failed binding local connection end";
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case CURLE_TOO_MANY_REDIRECTS :
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return "Number of redirects hit maximum amount";
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case CURLE_UNKNOWN_TELNET_OPTION:
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return "User specified an unknown telnet option";
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case CURLE_TELNET_OPTION_SYNTAX :
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return "Malformed telnet option";
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case CURLE_PEER_FAILED_VERIFICATION:
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return "SSL peer certificate or SSH md5 fingerprint was not OK";
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case CURLE_GOT_NOTHING:
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return "Server returned nothing (no headers, no data)";
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case CURLE_SSL_ENGINE_NOTFOUND:
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return "SSL crypto engine not found";
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case CURLE_SSL_ENGINE_SETFAILED:
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return "Can not set SSL crypto engine as default";
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case CURLE_SSL_ENGINE_INITFAILED:
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return "Failed to initialise SSL crypto engine";
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case CURLE_SEND_ERROR:
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return "Failed sending data to the peer";
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case CURLE_RECV_ERROR:
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return "Failure when receiving data from the peer";
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case CURLE_SSL_CERTPROBLEM:
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return "Problem with the local SSL certificate";
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case CURLE_SSL_CIPHER:
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return "Couldn't use specified SSL cipher";
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case CURLE_SSL_CACERT:
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return "Peer certificate cannot be authenticated with known CA certificates";
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case CURLE_SSL_CACERT_BADFILE:
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return "Problem with the SSL CA cert (path? access rights?)";
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case CURLE_BAD_CONTENT_ENCODING:
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return "Unrecognized HTTP Content-Encoding";
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case CURLE_LDAP_INVALID_URL:
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return "Invalid LDAP URL";
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case CURLE_FILESIZE_EXCEEDED:
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return "Maximum file size exceeded";
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case CURLE_USE_SSL_FAILED:
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return "Requested SSL level failed";
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case CURLE_SSL_SHUTDOWN_FAILED:
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return "Failed to shut down the SSL connection";
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case CURLE_SSL_CRL_BADFILE:
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return "Failed to load CRL file (path? access rights?, format?)";
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case CURLE_SSL_ISSUER_ERROR:
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return "Issuer check against peer certificate failed";
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case CURLE_SEND_FAIL_REWIND:
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return "Send failed since rewinding of the data stream failed";
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case CURLE_LOGIN_DENIED:
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return "Login denied";
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case CURLE_TFTP_NOTFOUND:
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return "TFTP: File Not Found";
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case CURLE_TFTP_PERM:
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return "TFTP: Access Violation";
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case CURLE_REMOTE_DISK_FULL:
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return "Disk full or allocation exceeded";
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case CURLE_TFTP_ILLEGAL:
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return "TFTP: Illegal operation";
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case CURLE_TFTP_UNKNOWNID:
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return "TFTP: Unknown transfer ID";
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case CURLE_REMOTE_FILE_EXISTS:
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return "Remote file already exists";
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case CURLE_TFTP_NOSUCHUSER:
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return "TFTP: No such user";
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case CURLE_CONV_FAILED:
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return "Conversion failed";
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case CURLE_CONV_REQD:
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return "Caller must register CURLOPT_CONV_ callback options";
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case CURLE_REMOTE_FILE_NOT_FOUND:
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return "Remote file not found";
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case CURLE_SSH:
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return "Error in the SSH layer";
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case CURLE_AGAIN:
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return "Socket not ready for send/recv";
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/* error codes not used by current libcurl */
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case CURLE_OBSOLETE4:
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case CURLE_OBSOLETE10:
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case CURLE_OBSOLETE12:
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case CURLE_OBSOLETE16:
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case CURLE_OBSOLETE20:
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case CURLE_OBSOLETE24:
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case CURLE_OBSOLETE29:
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case CURLE_OBSOLETE32:
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case CURLE_OBSOLETE40:
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case CURLE_OBSOLETE44:
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case CURLE_OBSOLETE46:
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case CURLE_OBSOLETE50:
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case CURLE_OBSOLETE57:
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case CURL_LAST:
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break;
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}
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/*
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* By using a switch, gcc -Wall will complain about enum values
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* which do not appear, helping keep this function up-to-date.
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* By using gcc -Wall -Werror, you can't forget.
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*
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* A table would not have the same benefit. Most compilers will
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* generate code very similar to a table in any case, so there
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* is little performance gain from a table. And something is broken
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* for the user's application, anyways, so does it matter how fast
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* it _doesn't_ work?
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*
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* The line number for the error will be near this comment, which
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* is why it is here, and not at the start of the switch.
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*/
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return "Unknown error";
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#else
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if(error == CURLE_OK)
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return "No error";
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else
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return "Error";
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#endif
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}
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const char *
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curl_multi_strerror(CURLMcode error)
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{
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#ifndef CURL_DISABLE_VERBOSE_STRINGS
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switch (error) {
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case CURLM_CALL_MULTI_PERFORM:
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return "Please call curl_multi_perform() soon";
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case CURLM_OK:
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return "No error";
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case CURLM_BAD_HANDLE:
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return "Invalid multi handle";
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case CURLM_BAD_EASY_HANDLE:
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return "Invalid easy handle";
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case CURLM_OUT_OF_MEMORY:
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return "Out of memory";
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case CURLM_INTERNAL_ERROR:
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return "Internal error";
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case CURLM_BAD_SOCKET:
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return "Invalid socket argument";
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case CURLM_UNKNOWN_OPTION:
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return "Unknown option";
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case CURLM_LAST:
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break;
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}
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return "Unknown error";
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#else
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if(error == CURLM_OK)
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return "No error";
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else
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return "Error";
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#endif
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}
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const char *
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curl_share_strerror(CURLSHcode error)
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{
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#ifndef CURL_DISABLE_VERBOSE_STRINGS
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switch (error) {
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case CURLSHE_OK:
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return "No error";
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case CURLSHE_BAD_OPTION:
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return "Unknown share option";
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case CURLSHE_IN_USE:
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return "Share currently in use";
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case CURLSHE_INVALID:
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return "Invalid share handle";
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case CURLSHE_NOMEM:
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return "Out of memory";
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case CURLSHE_LAST:
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break;
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}
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return "CURLSHcode unknown";
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#else
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if(error == CURLSHE_OK)
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return "No error";
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else
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return "Error";
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#endif
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}
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#ifdef USE_WINSOCK
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/* This function handles most / all (?) Winsock errors cURL is able to produce.
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*/
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static const char *
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get_winsock_error (int err, char *buf, size_t len)
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{
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const char *p;
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#ifndef CURL_DISABLE_VERBOSE_STRINGS
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switch (err) {
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case WSAEINTR:
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p = "Call interrupted";
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break;
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case WSAEBADF:
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p = "Bad file";
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break;
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case WSAEACCES:
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p = "Bad access";
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break;
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case WSAEFAULT:
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p = "Bad argument";
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break;
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case WSAEINVAL:
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p = "Invalid arguments";
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break;
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case WSAEMFILE:
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p = "Out of file descriptors";
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break;
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case WSAEWOULDBLOCK:
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p = "Call would block";
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break;
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case WSAEINPROGRESS:
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case WSAEALREADY:
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p = "Blocking call in progress";
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break;
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case WSAENOTSOCK:
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p = "Descriptor is not a socket";
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break;
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case WSAEDESTADDRREQ:
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p = "Need destination address";
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break;
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case WSAEMSGSIZE:
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p = "Bad message size";
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break;
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case WSAEPROTOTYPE:
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p = "Bad protocol";
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break;
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case WSAENOPROTOOPT:
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p = "Protocol option is unsupported";
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break;
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case WSAEPROTONOSUPPORT:
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p = "Protocol is unsupported";
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break;
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case WSAESOCKTNOSUPPORT:
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p = "Socket is unsupported";
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break;
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case WSAEOPNOTSUPP:
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p = "Operation not supported";
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break;
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case WSAEAFNOSUPPORT:
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p = "Address family not supported";
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break;
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case WSAEPFNOSUPPORT:
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p = "Protocol family not supported";
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break;
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case WSAEADDRINUSE:
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p = "Address already in use";
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break;
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case WSAEADDRNOTAVAIL:
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p = "Address not available";
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break;
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case WSAENETDOWN:
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p = "Network down";
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break;
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case WSAENETUNREACH:
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p = "Network unreachable";
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break;
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case WSAENETRESET:
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p = "Network has been reset";
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break;
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case WSAECONNABORTED:
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p = "Connection was aborted";
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break;
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case WSAECONNRESET:
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p = "Connection was reset";
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break;
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case WSAENOBUFS:
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p = "No buffer space";
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break;
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|
case WSAEISCONN:
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p = "Socket is already connected";
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break;
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case WSAENOTCONN:
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p = "Socket is not connected";
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break;
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case WSAESHUTDOWN:
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p = "Socket has been shut down";
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break;
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case WSAETOOMANYREFS:
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p = "Too many references";
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break;
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case WSAETIMEDOUT:
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p = "Timed out";
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|
break;
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|
case WSAECONNREFUSED:
|
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p = "Connection refused";
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|
break;
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|
case WSAELOOP:
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p = "Loop??";
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break;
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|
case WSAENAMETOOLONG:
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p = "Name too long";
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break;
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case WSAEHOSTDOWN:
|
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p = "Host down";
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break;
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|
case WSAEHOSTUNREACH:
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p = "Host unreachable";
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break;
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|
case WSAENOTEMPTY:
|
|
p = "Not empty";
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|
break;
|
|
case WSAEPROCLIM:
|
|
p = "Process limit reached";
|
|
break;
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|
case WSAEUSERS:
|
|
p = "Too many users";
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|
break;
|
|
case WSAEDQUOT:
|
|
p = "Bad quota";
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|
break;
|
|
case WSAESTALE:
|
|
p = "Something is stale";
|
|
break;
|
|
case WSAEREMOTE:
|
|
p = "Remote error";
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break;
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|
#ifdef WSAEDISCON /* missing in SalfordC! */
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case WSAEDISCON:
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p = "Disconnected";
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|
break;
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|
#endif
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|
/* Extended Winsock errors */
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|
case WSASYSNOTREADY:
|
|
p = "Winsock library is not ready";
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|
break;
|
|
case WSANOTINITIALISED:
|
|
p = "Winsock library not initialised";
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|
break;
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|
case WSAVERNOTSUPPORTED:
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|
p = "Winsock version not supported";
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break;
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|
|
/* getXbyY() errors (already handled in herrmsg):
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|
* Authoritative Answer: Host not found */
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case WSAHOST_NOT_FOUND:
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p = "Host not found";
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break;
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|
|
/* Non-Authoritative: Host not found, or SERVERFAIL */
|
|
case WSATRY_AGAIN:
|
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p = "Host not found, try again";
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break;
|
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|
|
/* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
|
|
case WSANO_RECOVERY:
|
|
p = "Unrecoverable error in call to nameserver";
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|
break;
|
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|
|
/* Valid name, no data record of requested type */
|
|
case WSANO_DATA:
|
|
p = "No data record of requested type";
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|
break;
|
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|
|
default:
|
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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 */
|