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