const char errlog_rcs[] = "$Id: errlog.c,v 1.125 2016/01/26 17:12:14 diem Exp $"; /********************************************************************* * * File : $Source: /cvsroot/ijbswa/current/errlog.c,v $ * * Purpose : Log errors to a designated destination in an elegant, * printf-like fashion. * * Copyright : Written by and Copyright (C) 2001-2014 the * Privoxy team. http://www.privoxy.org/ * * Based on the Internet Junkbuster originally written * by and Copyright (C) 1997 Anonymous Coders and * Junkbusters Corporation. http://www.junkbusters.com * * This program is free software; you can redistribute it * and/or modify it under the terms of the GNU General * Public License as published by the Free Software * Foundation; either version 2 of the License, or (at * your option) any later version. * * This program is distributed in the hope that it will * be useful, but WITHOUT ANY WARRANTY; without even the * implied warranty of MERCHANTABILITY or FITNESS FOR A * PARTICULAR PURPOSE. See the GNU General Public * License for more details. * * The GNU General Public License should be included with * this file. If not, you can view it at * http://www.gnu.org/copyleft/gpl.html * or write to the Free Software Foundation, Inc., 59 * Temple Place - Suite 330, Boston, MA 02111-1307, USA. * *********************************************************************/ #include #include #include #include #include #include "config.h" #include "miscutil.h" /* For gettimeofday() */ #include #if !defined(_WIN32) && !defined(__OS2__) #include #endif /* !defined(_WIN32) && !defined(__OS2__) */ #include #include #ifdef _WIN32 #ifndef STRICT #define STRICT #endif #include #ifndef _WIN_CONSOLE #include "w32log.h" #endif /* ndef _WIN_CONSOLE */ #endif /* def _WIN32 */ #ifdef _MSC_VER #define inline __inline #endif /* def _MSC_VER */ #ifdef __OS2__ #include /* For sock_errno */ #define INCL_DOS #include #endif #include "errlog.h" #include "project.h" #include "jcc.h" #ifdef FEATURE_EXTERNAL_FILTERS #include "jbsockets.h" #endif const char errlog_h_rcs[] = ERRLOG_H_VERSION; /* * LOG_LEVEL_FATAL cannot be turned off. (There are * some exceptional situations where we need to get a * message to the user). */ #define LOG_LEVEL_MINIMUM LOG_LEVEL_FATAL /* where to log (default: stderr) */ static FILE *logfp = NULL; /* logging detail level. XXX: stupid name. */ static int debug = (LOG_LEVEL_FATAL | LOG_LEVEL_ERROR); /* static functions */ static void fatal_error(const char * error_message); #ifdef _WIN32 static char *w32_socket_strerr(int errcode, char *tmp_buf); #endif #ifdef __OS2__ static char *os2_socket_strerr(int errcode, char *tmp_buf); #endif #ifdef MUTEX_LOCKS_AVAILABLE static inline void lock_logfile(void) { privoxy_mutex_lock(&log_mutex); } static inline void unlock_logfile(void) { privoxy_mutex_unlock(&log_mutex); } static inline void lock_loginit(void) { privoxy_mutex_lock(&log_init_mutex); } static inline void unlock_loginit(void) { privoxy_mutex_unlock(&log_init_mutex); } #else /* ! MUTEX_LOCKS_AVAILABLE */ /* * FIXME we need a cross-platform locking mechanism. * The locking/unlocking functions below should be * fleshed out for non-pthread implementations. */ static inline void lock_logfile() {} static inline void unlock_logfile() {} static inline void lock_loginit() {} static inline void unlock_loginit() {} #endif /********************************************************************* * * Function : fatal_error * * Description : Displays a fatal error to standard error (or, on * a WIN32 GUI, to a dialog box), and exits Privoxy * with status code 1. * * Parameters : * 1 : error_message = The error message to display. * * Returns : Does not return. * *********************************************************************/ static void fatal_error(const char *error_message) { if (logfp != NULL) { fputs(error_message, logfp); } #if defined(_WIN32) && !defined(_WIN_CONSOLE) { /* Skip timestamp and thread id for the message box. */ const char *box_message = strstr(error_message, "Fatal error"); if (NULL == box_message) { /* Shouldn't happen but ... */ box_message = error_message; } MessageBox(g_hwndLogFrame, box_message, "Privoxy Error", MB_OK | MB_ICONERROR | MB_TASKMODAL | MB_SETFOREGROUND | MB_TOPMOST); /* Cleanup - remove taskbar icon etc. */ TermLogWindow(); } #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */ #if defined(unix) if (pidfile) { unlink(pidfile); } #endif /* unix */ exit(1); } /********************************************************************* * * Function : show_version * * Description : Logs the Privoxy version and the program name. * * Parameters : * 1 : prog_name = The program name. * * Returns : Nothing. * *********************************************************************/ void show_version(const char *prog_name) { log_error(LOG_LEVEL_INFO, "Privoxy version " VERSION); if (prog_name != NULL) { log_error(LOG_LEVEL_INFO, "Program name: %s", prog_name); } } /********************************************************************* * * Function : init_log_module * * Description : Initializes the logging module to log to stderr. * Can only be called while stderr hasn't been closed * yet and is only supposed to be called once. * * Parameters : * 1 : prog_name = The program name. * * Returns : Nothing. * *********************************************************************/ void init_log_module(void) { lock_logfile(); logfp = stderr; unlock_logfile(); set_debug_level(debug); } /********************************************************************* * * Function : set_debug_level * * Description : Sets the debug level to the provided value * plus LOG_LEVEL_MINIMUM. * * XXX: we should only use the LOG_LEVEL_MINIMUM * until the first time the configuration file has * been parsed. * * Parameters : 1: debug_level = The debug level to set. * * Returns : Nothing. * *********************************************************************/ void set_debug_level(int debug_level) { debug = debug_level | LOG_LEVEL_MINIMUM; } /********************************************************************* * * Function : debug_level_is_enabled * * Description : Checks if a certain debug level is enabled. * * Parameters : 1: debug_level = The debug level to check. * * Returns : Nothing. * *********************************************************************/ int debug_level_is_enabled(int debug_level) { return (0 != (debug & debug_level)); } /********************************************************************* * * Function : disable_logging * * Description : Disables logging. * * Parameters : None. * * Returns : Nothing. * *********************************************************************/ void disable_logging(void) { if (logfp != NULL) { log_error(LOG_LEVEL_INFO, "No logfile configured. Please enable it before reporting any problems."); lock_logfile(); fclose(logfp); logfp = NULL; unlock_logfile(); } } /********************************************************************* * * Function : init_error_log * * Description : Initializes the logging module to log to a file. * * XXX: should be renamed. * * Parameters : * 1 : prog_name = The program name. * 2 : logfname = The logfile to (re)open. * * Returns : N/A * *********************************************************************/ void init_error_log(const char *prog_name, const char *logfname) { FILE *fp; assert(NULL != logfname); lock_loginit(); if ((logfp != NULL) && (logfp != stderr)) { log_error(LOG_LEVEL_INFO, "(Re-)Opening logfile \'%s\'", logfname); } /* set the designated log file */ fp = fopen(logfname, "a"); if ((NULL == fp) && (logfp != NULL)) { /* * Some platforms (like OS/2) don't allow us to open * the same file twice, therefore we give it another * shot after closing the old file descriptor first. * * We don't do it right away because it prevents us * from logging the "can't open logfile" message to * the old logfile. * * XXX: this is a lame workaround and once the next * release is out we should stop bothering reopening * the logfile unless we have to. * * Currently we reopen it every time the config file * has been reloaded, but actually we only have to * reopen it if the file name changed or if the * configuration reload was caused by a SIGHUP. */ log_error(LOG_LEVEL_INFO, "Failed to reopen logfile: \'%s\'. " "Retrying after closing the old file descriptor first. If that " "doesn't work, Privoxy will exit without being able to log a message.", logfname); lock_logfile(); fclose(logfp); logfp = NULL; unlock_logfile(); fp = fopen(logfname, "a"); } if (NULL == fp) { log_error(LOG_LEVEL_FATAL, "init_error_log(): can't open logfile: \'%s\'", logfname); } #ifdef FEATURE_EXTERNAL_FILTERS mark_socket_for_close_on_execute(3); #endif /* set logging to be completely unbuffered */ setbuf(fp, NULL); lock_logfile(); if (logfp != NULL) { fclose(logfp); } #ifdef unix if (daemon_mode && (logfp == stderr)) { if (dup2(1, 2) == -1) { /* * We only use fatal_error() to clear the pid * file and to exit. Given that stderr has just * been closed, the user will not see the error * message. */ fatal_error("Failed to reserve fd 2."); } } #endif logfp = fp; unlock_logfile(); show_version(prog_name); unlock_loginit(); } /* init_error_log */ /********************************************************************* * * Function : get_thread_id * * Description : Returns a number that is different for each thread. * * XXX: Should be moved elsewhere (miscutil.c?) * * Parameters : None * * Returns : thread_id * *********************************************************************/ static long get_thread_id(void) { long this_thread; #ifdef __OS2__ PTIB ptib; APIRET ulrc; /* XXX: I have no clue what this does */ #endif /* __OS2__ */ /* FIXME get current thread id */ #ifdef FEATURE_PTHREAD this_thread = (long)pthread_self(); #ifdef __MACH__ /* * Mac OSX (and perhaps other Mach instances) doesn't have a unique * value at the lowest order 4 bytes of pthread_self()'s return value, a pthread_t, * so trim the three lowest-order bytes from the value (16^3). */ this_thread = this_thread / 4096; #endif /* def __MACH__ */ #elif defined(_WIN32) this_thread = GetCurrentThreadId(); #elif defined(__OS2__) ulrc = DosGetInfoBlocks(&ptib, NULL); if (ulrc == 0) this_thread = ptib -> tib_ptib2 -> tib2_ultid; #else /* Forking instead of threading. */ this_thread = 1; #endif /* def FEATURE_PTHREAD */ return this_thread; } /********************************************************************* * * Function : get_log_timestamp * * Description : Generates the time stamp for the log message prefix. * * Parameters : * 1 : buffer = Storage buffer * 2 : buffer_size = Size of storage buffer * * Returns : Number of written characters or 0 for error. * *********************************************************************/ static inline size_t get_log_timestamp(char *buffer, size_t buffer_size) { size_t length; time_t now; struct tm tm_now; struct timeval tv_now; /* XXX: stupid name */ long msecs; int msecs_length = 0; gettimeofday(&tv_now, NULL); msecs = tv_now.tv_usec / 1000; now = tv_now.tv_sec; #ifdef HAVE_LOCALTIME_R tm_now = *localtime_r(&now, &tm_now); #elif defined(MUTEX_LOCKS_AVAILABLE) privoxy_mutex_lock(&localtime_mutex); tm_now = *localtime(&now); privoxy_mutex_unlock(&localtime_mutex); #else tm_now = *localtime(&now); #endif length = strftime(buffer, buffer_size, "%Y-%m-%d %H:%M:%S", &tm_now); if (length > (size_t)0) { msecs_length = snprintf(buffer+length, buffer_size - length, ".%.3ld", msecs); } if (msecs_length > 0) { length += (size_t)msecs_length; } else { length = 0; } return length; } /********************************************************************* * * Function : get_clf_timestamp * * Description : Generates a Common Log Format time string. * * Parameters : * 1 : buffer = Storage buffer * 2 : buffer_size = Size of storage buffer * * Returns : Number of written characters or 0 for error. * *********************************************************************/ static inline size_t get_clf_timestamp(char *buffer, size_t buffer_size) { /* * Complex because not all OSs have tm_gmtoff or * the %z field in strftime() */ time_t now; struct tm *tm_now; struct tm gmt; #ifdef HAVE_LOCALTIME_R struct tm dummy; #endif int days, hrs, mins; size_t length; int tz_length = 0; time (&now); #ifdef HAVE_GMTIME_R gmt = *gmtime_r(&now, &gmt); #elif defined(MUTEX_LOCKS_AVAILABLE) privoxy_mutex_lock(&gmtime_mutex); gmt = *gmtime(&now); privoxy_mutex_unlock(&gmtime_mutex); #else gmt = *gmtime(&now); #endif #ifdef HAVE_LOCALTIME_R tm_now = localtime_r(&now, &dummy); #elif defined(MUTEX_LOCKS_AVAILABLE) privoxy_mutex_lock(&localtime_mutex); tm_now = localtime(&now); privoxy_mutex_unlock(&localtime_mutex); #else tm_now = localtime(&now); #endif days = tm_now->tm_yday - gmt.tm_yday; hrs = ((days < -1 ? 24 : 1 < days ? -24 : days * 24) + tm_now->tm_hour - gmt.tm_hour); mins = hrs * 60 + tm_now->tm_min - gmt.tm_min; length = strftime(buffer, buffer_size, "%d/%b/%Y:%H:%M:%S ", tm_now); if (length > (size_t)0) { tz_length = snprintf(buffer+length, buffer_size-length, "%+03d%02d", mins / 60, abs(mins) % 60); } if (tz_length > 0) { length += (size_t)tz_length; } else { length = 0; } return length; } /********************************************************************* * * Function : get_log_level_string * * Description : Translates a numerical loglevel into a string. * * Parameters : * 1 : loglevel = LOG_LEVEL_FOO * * Returns : Log level string. * *********************************************************************/ static inline const char *get_log_level_string(int loglevel) { char *log_level_string = NULL; assert(0 < loglevel); switch (loglevel) { case LOG_LEVEL_ERROR: log_level_string = "Error"; break; case LOG_LEVEL_FATAL: log_level_string = "Fatal error"; break; case LOG_LEVEL_GPC: log_level_string = "Request"; break; case LOG_LEVEL_CONNECT: log_level_string = "Connect"; break; case LOG_LEVEL_WRITING: log_level_string = "Writing"; break; case LOG_LEVEL_RECEIVED: log_level_string = "Received"; break; case LOG_LEVEL_HEADER: log_level_string = "Header"; break; case LOG_LEVEL_INFO: log_level_string = "Info"; break; case LOG_LEVEL_RE_FILTER: log_level_string = "Re-Filter"; break; #ifdef FEATURE_FORCE_LOAD case LOG_LEVEL_FORCE: log_level_string = "Force"; break; #endif /* def FEATURE_FORCE_LOAD */ case LOG_LEVEL_REDIRECTS: log_level_string = "Redirect"; break; case LOG_LEVEL_DEANIMATE: log_level_string = "Gif-Deanimate"; break; case LOG_LEVEL_CRUNCH: log_level_string = "Crunch"; break; case LOG_LEVEL_CGI: log_level_string = "CGI"; break; case LOG_LEVEL_ACTIONS: log_level_string = "Actions"; break; default: log_level_string = "Unknown log level"; break; } assert(NULL != log_level_string); return log_level_string; } #define LOG_BUFFER_SIZE BUFFER_SIZE /********************************************************************* * * Function : log_error * * Description : This is the error-reporting and logging function. * * Parameters : * 1 : loglevel = the type of message to be logged * 2 : fmt = the main string we want logged, printf-like * 3 : ... = arguments to be inserted in fmt (printf-like). * * Returns : N/A * *********************************************************************/ void log_error(int loglevel, const char *fmt, ...) { va_list ap; char *outbuf = NULL; static char *outbuf_save = NULL; char tempbuf[LOG_BUFFER_SIZE]; size_t length = 0; const char * src = fmt; long thread_id; char timestamp[30]; /* * XXX: Make this a config option, * why else do we allocate instead of using * an array? */ size_t log_buffer_size = LOG_BUFFER_SIZE; #if defined(_WIN32) && !defined(_WIN_CONSOLE) /* * Irrespective of debug setting, a GET/POST/CONNECT makes * the taskbar icon animate. (There is an option to disable * this but checking that is handled inside LogShowActivity()). */ if ((loglevel == LOG_LEVEL_GPC) || (loglevel == LOG_LEVEL_CRUNCH)) { LogShowActivity(); } #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */ /* * verify that the loglevel applies to current * settings and that logging is enabled. * Bail out otherwise. */ if ((0 == (loglevel & debug)) #ifndef _WIN32 || (logfp == NULL) #endif ) { if (loglevel == LOG_LEVEL_FATAL) { fatal_error("Fatal error. You're not supposed to" "see this message. Please file a bug report."); } return; } thread_id = get_thread_id(); get_log_timestamp(timestamp, sizeof(timestamp)); /* protect the whole function because of the static buffer (outbuf) */ lock_logfile(); if (NULL == outbuf_save) { outbuf_save = zalloc_or_die(log_buffer_size + 1); /* +1 for paranoia */ } outbuf = outbuf_save; /* * Memsetting the whole buffer to zero (in theory) * makes things easier later on. */ memset(outbuf, 0, log_buffer_size); /* Add prefix for everything but Common Log Format messages */ if (loglevel != LOG_LEVEL_CLF) { length = (size_t)snprintf(outbuf, log_buffer_size, "%s %08lx %s: ", timestamp, thread_id, get_log_level_string(loglevel)); } /* get ready to scan var. args. */ va_start(ap, fmt); /* build formatted message from fmt and var-args */ while ((*src) && (length < log_buffer_size-2)) { const char *sval = NULL; /* %N string */ int ival; /* %N string length or an error code */ unsigned uval; /* %u value */ long lval; /* %l value */ unsigned long ulval; /* %ul value */ char ch; const char *format_string = tempbuf; ch = *src++; if (ch != '%') { outbuf[length++] = ch; /* * XXX: Only necessary on platforms where multiple threads * can write to the buffer at the same time because we * don't support mutexes (OS/2 for example). */ outbuf[length] = '\0'; continue; } outbuf[length] = '\0'; ch = *src++; switch (ch) { case '%': tempbuf[0] = '%'; tempbuf[1] = '\0'; break; case 'd': ival = va_arg(ap, int); snprintf(tempbuf, sizeof(tempbuf), "%d", ival); break; case 'u': uval = va_arg(ap, unsigned); snprintf(tempbuf, sizeof(tempbuf), "%u", uval); break; case 'l': /* this is a modifier that must be followed by u, lu, or d */ ch = *src++; if (ch == 'd') { lval = va_arg(ap, long); snprintf(tempbuf, sizeof(tempbuf), "%ld", lval); } else if (ch == 'u') { ulval = va_arg(ap, unsigned long); snprintf(tempbuf, sizeof(tempbuf), "%lu", ulval); } else if ((ch == 'l') && (*src == 'u')) { unsigned long long lluval = va_arg(ap, unsigned long long); snprintf(tempbuf, sizeof(tempbuf), "%llu", lluval); src++; } else { snprintf(tempbuf, sizeof(tempbuf), "Bad format string: \"%s\"", fmt); loglevel = LOG_LEVEL_FATAL; } break; case 'c': /* * Note that char paramaters are converted to int, so we need to * pass "int" to va_arg. (See K&R, 2nd ed, section A7.3.2, page 202) */ tempbuf[0] = (char) va_arg(ap, int); tempbuf[1] = '\0'; break; case 's': format_string = va_arg(ap, char *); if (format_string == NULL) { format_string = "[null]"; } break; case 'N': /* * Non-standard: Print a counted unterminated string, * replacing unprintable bytes with their hex value. * Takes 2 parameters: int length, const char * string. */ ival = va_arg(ap, int); assert(ival >= 0); sval = va_arg(ap, char *); assert(sval != NULL); while ((ival-- > 0) && (length < log_buffer_size - 6)) { if (isprint((int)*sval) && (*sval != '\\')) { outbuf[length++] = *sval; outbuf[length] = '\0'; } else { int ret = snprintf(outbuf + length, log_buffer_size - length - 2, "\\x%.2x", (unsigned char)*sval); assert(ret == 4); length += 4; } sval++; } /* * XXX: In case of printable characters at the end of * the %N string, we're not using the whole buffer. */ format_string = (length < log_buffer_size - 6) ? "" : "[too long]"; break; case 'E': /* Non-standard: Print error code from errno */ #ifdef _WIN32 ival = WSAGetLastError(); format_string = w32_socket_strerr(ival, tempbuf); #elif __OS2__ ival = sock_errno(); if (ival != 0) { format_string = os2_socket_strerr(ival, tempbuf); } else { ival = errno; format_string = strerror(ival); } #else /* ifndef _WIN32 */ ival = errno; #ifdef HAVE_STRERROR format_string = strerror(ival); #else /* ifndef HAVE_STRERROR */ format_string = NULL; #endif /* ndef HAVE_STRERROR */ if (sval == NULL) { snprintf(tempbuf, sizeof(tempbuf), "(errno = %d)", ival); } #endif /* ndef _WIN32 */ break; case 'T': /* Non-standard: Print a Common Log File timestamp */ get_clf_timestamp(tempbuf, sizeof(tempbuf)); break; default: snprintf(tempbuf, sizeof(tempbuf), "Bad format string: \"%s\"", fmt); loglevel = LOG_LEVEL_FATAL; break; } assert(length < log_buffer_size); length += strlcpy(outbuf + length, format_string, log_buffer_size - length); if (length >= log_buffer_size-2) { static const char warning[] = "... [too long, truncated]"; length = log_buffer_size - sizeof(warning) - 1; length += strlcpy(outbuf + length, warning, log_buffer_size - length); assert(length < log_buffer_size); break; } } /* done with var. args */ va_end(ap); assert(length < log_buffer_size); length += strlcpy(outbuf + length, "\n", log_buffer_size - length); /* Some sanity checks */ if ((length >= log_buffer_size) || (outbuf[log_buffer_size-1] != '\0') || (outbuf[log_buffer_size] != '\0') ) { /* Repeat as assertions */ assert(length < log_buffer_size); assert(outbuf[log_buffer_size-1] == '\0'); /* * outbuf's real size is log_buffer_size+1, * so while this looks like an off-by-one, * we're only checking our paranoia byte. */ assert(outbuf[log_buffer_size] == '\0'); snprintf(outbuf, log_buffer_size, "%s %08lx Fatal error: log_error()'s sanity checks failed." "length: %d. Exiting.", timestamp, thread_id, (int)length); loglevel = LOG_LEVEL_FATAL; } #ifndef _WIN32 /* * On Windows this is acceptable in case * we are logging to the GUI window only. */ assert(NULL != logfp); #endif if (loglevel == LOG_LEVEL_FATAL) { fatal_error(outbuf_save); /* Never get here */ } if (logfp != NULL) { fputs(outbuf_save, logfp); } #if defined(_WIN32) && !defined(_WIN_CONSOLE) /* Write to display */ LogPutString(outbuf_save); #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */ unlock_logfile(); } /********************************************************************* * * Function : jb_err_to_string * * Description : Translates JB_ERR_FOO codes into strings. * * XXX: the type of error codes is jb_err * but the typedef'inition is currently not * visible to all files that include errlog.h. * * Parameters : * 1 : jb_error = a valid jb_err code * * Returns : A string with the jb_err translation * *********************************************************************/ const char *jb_err_to_string(int jb_error) { switch (jb_error) { case JB_ERR_OK: return "Success, no error"; case JB_ERR_MEMORY: return "Out of memory"; case JB_ERR_CGI_PARAMS: return "Missing or corrupt CGI parameters"; case JB_ERR_FILE: return "Error opening, reading or writing a file"; case JB_ERR_PARSE: return "Parse error"; case JB_ERR_MODIFIED: return "File has been modified outside of the CGI actions editor."; case JB_ERR_COMPRESS: return "(De)compression failure"; } assert(0); return "Internal error"; } #ifdef _WIN32 /********************************************************************* * * Function : w32_socket_strerr * * Description : Translate the return value from WSAGetLastError() * into a string. * * Parameters : * 1 : errcode = The return value from WSAGetLastError(). * 2 : tmp_buf = A temporary buffer that might be used to * store the string. * * Returns : String representing the error code. This may be * a global string constant or a string stored in * tmp_buf. * *********************************************************************/ static char *w32_socket_strerr(int errcode, char *tmp_buf) { #define TEXT_FOR_ERROR(code,text) \ if (errcode == code) \ { \ return #code " - " text; \ } TEXT_FOR_ERROR(WSAEACCES, "Permission denied") TEXT_FOR_ERROR(WSAEADDRINUSE, "Address already in use.") TEXT_FOR_ERROR(WSAEADDRNOTAVAIL, "Cannot assign requested address."); TEXT_FOR_ERROR(WSAEAFNOSUPPORT, "Address family not supported by protocol family."); TEXT_FOR_ERROR(WSAEALREADY, "Operation already in progress."); TEXT_FOR_ERROR(WSAECONNABORTED, "Software caused connection abort."); TEXT_FOR_ERROR(WSAECONNREFUSED, "Connection refused."); TEXT_FOR_ERROR(WSAECONNRESET, "Connection reset by peer."); TEXT_FOR_ERROR(WSAEDESTADDRREQ, "Destination address required."); TEXT_FOR_ERROR(WSAEFAULT, "Bad address."); TEXT_FOR_ERROR(WSAEHOSTDOWN, "Host is down."); TEXT_FOR_ERROR(WSAEHOSTUNREACH, "No route to host."); TEXT_FOR_ERROR(WSAEINPROGRESS, "Operation now in progress."); TEXT_FOR_ERROR(WSAEINTR, "Interrupted function call."); TEXT_FOR_ERROR(WSAEINVAL, "Invalid argument."); TEXT_FOR_ERROR(WSAEISCONN, "Socket is already connected."); TEXT_FOR_ERROR(WSAEMFILE, "Too many open sockets."); TEXT_FOR_ERROR(WSAEMSGSIZE, "Message too long."); TEXT_FOR_ERROR(WSAENETDOWN, "Network is down."); TEXT_FOR_ERROR(WSAENETRESET, "Network dropped connection on reset."); TEXT_FOR_ERROR(WSAENETUNREACH, "Network is unreachable."); TEXT_FOR_ERROR(WSAENOBUFS, "No buffer space available."); TEXT_FOR_ERROR(WSAENOPROTOOPT, "Bad protocol option."); TEXT_FOR_ERROR(WSAENOTCONN, "Socket is not connected."); TEXT_FOR_ERROR(WSAENOTSOCK, "Socket operation on non-socket."); TEXT_FOR_ERROR(WSAEOPNOTSUPP, "Operation not supported."); TEXT_FOR_ERROR(WSAEPFNOSUPPORT, "Protocol family not supported."); TEXT_FOR_ERROR(WSAEPROCLIM, "Too many processes."); TEXT_FOR_ERROR(WSAEPROTONOSUPPORT, "Protocol not supported."); TEXT_FOR_ERROR(WSAEPROTOTYPE, "Protocol wrong type for socket."); TEXT_FOR_ERROR(WSAESHUTDOWN, "Cannot send after socket shutdown."); TEXT_FOR_ERROR(WSAESOCKTNOSUPPORT, "Socket type not supported."); TEXT_FOR_ERROR(WSAETIMEDOUT, "Connection timed out."); TEXT_FOR_ERROR(WSAEWOULDBLOCK, "Resource temporarily unavailable."); TEXT_FOR_ERROR(WSAHOST_NOT_FOUND, "Host not found."); TEXT_FOR_ERROR(WSANOTINITIALISED, "Successful WSAStartup not yet performed."); TEXT_FOR_ERROR(WSANO_DATA, "Valid name, no data record of requested type."); TEXT_FOR_ERROR(WSANO_RECOVERY, "This is a non-recoverable error."); TEXT_FOR_ERROR(WSASYSNOTREADY, "Network subsystem is unavailable."); TEXT_FOR_ERROR(WSATRY_AGAIN, "Non-authoritative host not found."); TEXT_FOR_ERROR(WSAVERNOTSUPPORTED, "WINSOCK.DLL version out of range."); TEXT_FOR_ERROR(WSAEDISCON, "Graceful shutdown in progress."); /* * The following error codes are documented in the Microsoft WinSock * reference guide, but don't actually exist. * * TEXT_FOR_ERROR(WSA_INVALID_HANDLE, "Specified event object handle is invalid."); * TEXT_FOR_ERROR(WSA_INVALID_PARAMETER, "One or more parameters are invalid."); * TEXT_FOR_ERROR(WSAINVALIDPROCTABLE, "Invalid procedure table from service provider."); * TEXT_FOR_ERROR(WSAINVALIDPROVIDER, "Invalid service provider version number."); * TEXT_FOR_ERROR(WSA_IO_PENDING, "Overlapped operations will complete later."); * TEXT_FOR_ERROR(WSA_IO_INCOMPLETE, "Overlapped I/O event object not in signaled state."); * TEXT_FOR_ERROR(WSA_NOT_ENOUGH_MEMORY, "Insufficient memory available."); * TEXT_FOR_ERROR(WSAPROVIDERFAILEDINIT, "Unable to initialize a service provider."); * TEXT_FOR_ERROR(WSASYSCALLFAILURE, "System call failure."); * TEXT_FOR_ERROR(WSA_OPERATION_ABORTED, "Overlapped operation aborted."); */ sprintf(tmp_buf, "(error number %d)", errcode); return tmp_buf; } #endif /* def _WIN32 */ #ifdef __OS2__ /********************************************************************* * * Function : os2_socket_strerr * * Description : Translate the return value from sock_errno() * into a string. * * Parameters : * 1 : errcode = The return value from sock_errno(). * 2 : tmp_buf = A temporary buffer that might be used to * store the string. * * Returns : String representing the error code. This may be * a global string constant or a string stored in * tmp_buf. * *********************************************************************/ static char *os2_socket_strerr(int errcode, char *tmp_buf) { #define TEXT_FOR_ERROR(code,text) \ if (errcode == code) \ { \ return #code " - " text; \ } TEXT_FOR_ERROR(SOCEPERM , "Not owner.") TEXT_FOR_ERROR(SOCESRCH , "No such process.") TEXT_FOR_ERROR(SOCEINTR , "Interrupted system call.") TEXT_FOR_ERROR(SOCENXIO , "No such device or address.") TEXT_FOR_ERROR(SOCEBADF , "Bad file number.") TEXT_FOR_ERROR(SOCEACCES , "Permission denied.") TEXT_FOR_ERROR(SOCEFAULT , "Bad address.") TEXT_FOR_ERROR(SOCEINVAL , "Invalid argument.") TEXT_FOR_ERROR(SOCEMFILE , "Too many open files.") TEXT_FOR_ERROR(SOCEPIPE , "Broken pipe.") TEXT_FOR_ERROR(SOCEWOULDBLOCK , "Operation would block.") TEXT_FOR_ERROR(SOCEINPROGRESS , "Operation now in progress.") TEXT_FOR_ERROR(SOCEALREADY , "Operation already in progress.") TEXT_FOR_ERROR(SOCENOTSOCK , "Socket operation on non-socket.") TEXT_FOR_ERROR(SOCEDESTADDRREQ , "Destination address required.") TEXT_FOR_ERROR(SOCEMSGSIZE , "Message too long.") TEXT_FOR_ERROR(SOCEPROTOTYPE , "Protocol wrong type for socket.") TEXT_FOR_ERROR(SOCENOPROTOOPT , "Protocol not available.") TEXT_FOR_ERROR(SOCEPROTONOSUPPORT, "Protocol not supported.") TEXT_FOR_ERROR(SOCESOCKTNOSUPPORT, "Socket type not supported.") TEXT_FOR_ERROR(SOCEOPNOTSUPP , "Operation not supported.") TEXT_FOR_ERROR(SOCEPFNOSUPPORT , "Protocol family not supported.") TEXT_FOR_ERROR(SOCEAFNOSUPPORT , "Address family not supported by protocol family.") TEXT_FOR_ERROR(SOCEADDRINUSE , "Address already in use.") TEXT_FOR_ERROR(SOCEADDRNOTAVAIL , "Can't assign requested address.") TEXT_FOR_ERROR(SOCENETDOWN , "Network is down.") TEXT_FOR_ERROR(SOCENETUNREACH , "Network is unreachable.") TEXT_FOR_ERROR(SOCENETRESET , "Network dropped connection on reset.") TEXT_FOR_ERROR(SOCECONNABORTED , "Software caused connection abort.") TEXT_FOR_ERROR(SOCECONNRESET , "Connection reset by peer.") TEXT_FOR_ERROR(SOCENOBUFS , "No buffer space available.") TEXT_FOR_ERROR(SOCEISCONN , "Socket is already connected.") TEXT_FOR_ERROR(SOCENOTCONN , "Socket is not connected.") TEXT_FOR_ERROR(SOCESHUTDOWN , "Can't send after socket shutdown.") TEXT_FOR_ERROR(SOCETOOMANYREFS , "Too many references: can't splice.") TEXT_FOR_ERROR(SOCETIMEDOUT , "Operation timed out.") TEXT_FOR_ERROR(SOCECONNREFUSED , "Connection refused.") TEXT_FOR_ERROR(SOCELOOP , "Too many levels of symbolic links.") TEXT_FOR_ERROR(SOCENAMETOOLONG , "File name too long.") TEXT_FOR_ERROR(SOCEHOSTDOWN , "Host is down.") TEXT_FOR_ERROR(SOCEHOSTUNREACH , "No route to host.") TEXT_FOR_ERROR(SOCENOTEMPTY , "Directory not empty.") TEXT_FOR_ERROR(SOCEOS2ERR , "OS/2 Error.") sprintf(tmp_buf, "(error number %d)", errcode); return tmp_buf; } #endif /* def __OS2__ */ /* Local Variables: tab-width: 3 end: */