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Diffstat (limited to '')
| -rw-r--r-- | jnlib/logging.c | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/jnlib/logging.c b/jnlib/logging.c new file mode 100644 index 00000000..7ab2cb57 --- /dev/null +++ b/jnlib/logging.c @@ -0,0 +1,257 @@ +/* logging.c - useful logging functions + * Copyright (C) 1998, 1999, 2000 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 ; + + if( !fmt ) { + do_logv( MY_LOG_BEGIN, NULL, NULL ); + } + else { + va_start( arg_ptr, fmt ) ; + do_logv( MY_LOG_CONT, 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 + |