/* logging.c - useful logging functions * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. * * This file is part of GnuPG. * * GnuPG 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. * * GnuPG 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA */ /* This file should replace logger.c in the future - for now it is not * used by GnuPG but by GPA. * It is a quite simple implemenation but sufficient for most purposes. */ #include <config.h> #include <stdlib.h> #include <stdio.h> #include <string.h> #include <stdarg.h> #include <errno.h> #include <time.h> #ifdef __MINGW32__ #include <io.h> #endif #include "libjnlib-config.h" #include "logging.h" enum my_log_levels { MY_LOG_BEGIN, /* only print the timestamp if configured */ MY_LOG_CONT, MY_LOG_INFO, MY_LOG_WARN, MY_LOG_ERROR, MY_LOG_FATAL, MY_LOG_BUG, MY_LOG_DEBUG }; static FILE *logstream; static int use_time; static int missing_lf; static int errorcount; #if 0 static void write2stderr( const char *s ) { write( 2, s, strlen(s) ); } static void do_die(int rc, const char *text ) { write2stderr("\nFatal error: "); write2stderr(text); write2stderr("\n"); abort(); } #endif int log_get_errorcount (int clear) { int n = errorcount; if( clear ) errorcount = 0; return n; } void log_set_file( const char *name ) { FILE *fp = (name && strcmp(name,"-"))? fopen(name, "a") : stderr; if( !fp ) { fprintf(stderr, "failed to open log file `%s': %s\n", name, strerror(errno)); return; } setvbuf( fp, NULL, _IOLBF, 0 ); if( logstream && logstream != stderr ) fclose( logstream ); logstream = fp; use_time = fp != stderr; missing_lf = 0; } int log_get_fd() { return fileno(logstream?logstream:stderr); } static void do_logv( int level, const char *fmt, va_list arg_ptr ) { if( !logstream ) logstream = stderr; if( missing_lf && level != MY_LOG_CONT ) putc('\n', logstream ); missing_lf = 0; if( use_time && level != MY_LOG_CONT ) { /* Note this does not work for multiple line logging as we would * need to print to a buffer first */ struct tm *tp; time_t atime = time(NULL); tp = localtime( &atime ); fprintf( logstream, "%04d-%02d-%02d %02d:%02d:%02d ", 1900+tp->tm_year, tp->tm_mon+1, tp->tm_mday, tp->tm_hour, tp->tm_min, tp->tm_sec ); } switch ( level ) { case MY_LOG_BEGIN: break; case MY_LOG_CONT: break; case MY_LOG_INFO: break; case MY_LOG_WARN: break; case MY_LOG_ERROR: break; case MY_LOG_FATAL: fputs("Fatal: ",logstream ); break; case MY_LOG_BUG: fputs("Ohhhh jeeee: ", logstream); break; case MY_LOG_DEBUG: fputs("DBG: ", logstream ); break; default: fprintf(logstream,"[Unknown log level %d]: ", level ); break; } if( fmt ) { vfprintf(logstream,fmt,arg_ptr) ; if( *fmt && fmt[strlen(fmt)-1] != '\n' ) missing_lf = 1; } if( level == MY_LOG_FATAL ) exit(2); if( level == MY_LOG_BUG ) abort(); } static void do_log( int level, const char *fmt, ... ) { va_list arg_ptr ; va_start( arg_ptr, fmt ) ; do_logv( level, fmt, arg_ptr ); va_end(arg_ptr); } void log_info( const char *fmt, ... ) { va_list arg_ptr ; va_start( arg_ptr, fmt ) ; do_logv( MY_LOG_INFO, fmt, arg_ptr ); va_end(arg_ptr); } void log_error( const char *fmt, ... ) { va_list arg_ptr ; va_start( arg_ptr, fmt ) ; do_logv( MY_LOG_ERROR, fmt, arg_ptr ); va_end(arg_ptr); /* protect against counter overflow */ if( errorcount < 30000 ) errorcount++; } void log_fatal( const char *fmt, ... ) { va_list arg_ptr ; va_start( arg_ptr, fmt ) ; do_logv( MY_LOG_FATAL, fmt, arg_ptr ); va_end(arg_ptr); abort(); /* never called, bugs it makes the compiler happy */ } void log_bug( const char *fmt, ... ) { va_list arg_ptr ; va_start( arg_ptr, fmt ) ; do_logv( MY_LOG_BUG, fmt, arg_ptr ); va_end(arg_ptr); abort(); /* never called, but it makes the compiler happy */ } void log_debug( const char *fmt, ... ) { va_list arg_ptr ; va_start( arg_ptr, fmt ) ; do_logv( MY_LOG_DEBUG, fmt, arg_ptr ); va_end(arg_ptr); } void log_printf (const char *fmt, ...) { va_list arg_ptr; va_start (arg_ptr, fmt); do_logv (fmt ? MY_LOG_CONT : MY_LOG_BEGIN, fmt, arg_ptr); va_end (arg_ptr); } #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 5 ) void bug_at( const char *file, int line, const char *func ) { do_log( MY_LOG_BUG, ("... this is a bug (%s:%d:%s)\n"), file, line, func ); abort(); /* never called, but it makes the compiler happy */ } #else void bug_at( const char *file, int line ) { do_log( MY_LOG_BUG, _("you found a bug ... (%s:%d)\n"), file, line); abort(); /* never called, but it makes the compiler happy */ } #endif