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/*
* Copyright (c) 1997, 98, 99, 2000, 01
* Motoyuki Kasahara
*
* 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, 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.
*/
/*
* This program requires the following Autoconf macros:
* AC_C_CONST
* AC_TYPE_SIZE_T
* AC_HEADER_STDC
* AC_CHECK_HEADERS(string.h, memory.h, syslog.h)
* AC_CHECK_FUNCS(vsyslog, strerror, syslog)
* AC_FUNC_VPRINTF
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <sys/types.h>
#include <errno.h>
#ifdef HAVE_SYSLOG_H
#include <syslog.h>
#endif
#if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
#include <string.h>
#if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
#include <memory.h>
#endif /* not STDC_HEADERS and HAVE_MEMORY_H */
#else /* not STDC_HEADERS and not HAVE_STRING_H */
#include <strings.h>
#endif /* not STDC_HEADERS and not HAVE_STRING_H */
#if (defined(HAVE_VPRINTF) || defined(HAVE_DOPRNT)) && defined(HAVE_VSYSLOG)
#ifdef __STDC__
#include <stdarg.h>
#else /* not __STDC__ */
#include <varargs.h>
#endif /* not __STDC__ */
#endif /* (defined(HAVE_VPRINTF) || defined(HAVE_DOPRNT)) && ... */
#ifndef HAVE_STRERROR
#ifdef __STDC__
char *strerror(int);
#else /* not __STDC__ */
char *strerror();
#endif /* not __STDC__ */
#endif /* HAVE_STRERROR */
#include "fakelog.h"
#undef syslog
/*
* Internal log priorities.
*/
#define FAKELOG_QUIET 0
#define FAKELOG_EMERG 1
#define FAKELOG_ALERT 2
#define FAKELOG_CRIT 3
#define FAKELOG_ERR 4
#define FAKELOG_WARNING 5
#define FAKELOG_NOTICE 6
#define FAKELOG_INFO 7
#define FAKELOG_DEBUG 8
#define FAKELOG_UNKNOWN 9
/*
* Log name, mode and level.
*/
static char *log_name = NULL;
static char log_name_buffer[FAKELOG_MAX_LOG_NAME_LENGTH + 1];
static int log_mode = FAKELOG_TO_SYSLOG;
static int log_level = FAKELOG_ERR;
/*
* Set log name.
*/
void
set_fakelog_name(name)
const char *name;
{
if (name == NULL)
log_name = NULL;
else {
strncpy(log_name_buffer, name, FAKELOG_MAX_LOG_NAME_LENGTH);
log_name_buffer[FAKELOG_MAX_LOG_NAME_LENGTH] = '\0';
log_name = log_name_buffer;
}
}
/*
* Set log level.
*/
void
set_fakelog_mode(mode)
int mode;
{
log_mode = mode;
}
/*
* Set log level.
*/
void
set_fakelog_level(level)
int level;
{
/*
* Convert a syslog priority to a fakelog priority.
*/
switch (level) {
#ifdef LOG_EMERG
case LOG_EMERG:
log_level = FAKELOG_EMERG;
break;
#endif
#ifdef LOG_ALERT
case LOG_ALERT:
log_level = FAKELOG_ALERT;
break;
#endif
#ifdef LOG_CRIT
case LOG_CRIT:
log_level = FAKELOG_CRIT;
break;
#endif
#ifdef LOG_ERR
case LOG_ERR:
log_level = FAKELOG_ERR;
break;
#endif
#ifdef LOG_WARNING
case LOG_WARNING:
log_level = FAKELOG_WARNING;
break;
#endif
#ifdef LOG_NOTICE
case LOG_NOTICE:
log_level = FAKELOG_NOTICE;
break;
#endif
#ifdef LOG_INFO
case LOG_INFO:
log_level = FAKELOG_INFO;
break;
#endif
#ifdef LOG_DEBUG
case LOG_DEBUG:
log_level = FAKELOG_DEBUG;
break;
#endif
}
}
/*
* The function fakes syslog(), and output a message to standard
* error, instead of syslog.
*
* To use the function, you can fake your sources by the following
* trick:
*
* #define syslog fakelog
*
* Note that this function doesn't support `%m' that syslog() expands
* into the current error message.
*/
#define BUFFER_SIZE 1024
#if (defined(HAVE_VPRINTF) || defined(HAVE_DOPRNT)) && defined(HAVE_VSYSLOG)
#ifdef __STDC__
void
fakelog(int priority, const char *message, ...)
#else /* not __STDC__ */
void
fakelog(priority, message, va_alist)
int priority;
char *message;
va_dcl
#endif /* not __STDC__ */
#else /* not (defined(HAVE_VPRINTF) || defined(HAVE_DOPRNT)) && ... */
void
fakelog(priority, message, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9)
int priority;
char *message;
char *a0, *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8, *a9;
#endif /* not (defined(HAVE_VPRINTF) || defined(HAVE_DOPRNT)) && ... */
{
#if (defined(HAVE_VPRINTF) || defined(HAVE_DOPRNT)) && defined(HAVE_VSYSLOG)
va_list ap;
#endif
int log_flag;
/*
* Convert `priority'.
*/
switch (priority) {
#ifdef LOG_EMERG
case LOG_EMERG:
log_flag = (FAKELOG_EMERG <= log_level);
break;
#endif
#ifdef LOG_ALERT
case LOG_ALERT:
log_flag = (FAKELOG_ALERT <= log_level);
break;
#endif
#ifdef LOG_CRIT
case LOG_CRIT:
log_flag = (FAKELOG_CRIT <= log_level);
break;
#endif
#ifdef LOG_ERR
case LOG_ERR:
log_flag = (FAKELOG_ERR <= log_level);
break;
#endif
#ifdef LOG_WARNING
case LOG_WARNING:
log_flag = (FAKELOG_WARNING <= log_level);
break;
#endif
#ifdef LOG_NOTICE
case LOG_NOTICE:
log_flag = (FAKELOG_NOTICE <= log_level);
break;
#endif
#ifdef LOG_INFO
case LOG_INFO:
log_flag = (FAKELOG_INFO <= log_level);
break;
#endif
#ifdef LOG_DEBUG
case LOG_DEBUG:
log_flag = (FAKELOG_DEBUG <= log_level);
break;
#endif
default:
log_flag = 0;
}
/*
* Start to use the variable length arguments.
*/
#if (defined(HAVE_VPRINTF) || defined(HAVE_DOPRNT)) && defined(HAVE_VSYSLOG)
#ifdef __STDC__
va_start(ap, message);
#else /* not __STDC__ */
va_start(ap);
#endif /* not __STDC__ */
#endif /* (defined(HAVE_VPRINTF) || defined(HAVE_DOPRNT)) && ... */
/*
* Output the message to syslog.
*/
if (log_mode == FAKELOG_TO_SYSLOG || log_mode == FAKELOG_TO_BOTH) {
#if (defined(HAVE_VPRINTF) || defined(HAVE_DOPRNT)) && defined(HAVE_VSYSLOG)
vsyslog(priority, message, ap);
#else /* not (defined(HAVE_VPRINTF) || ... */
#ifdef HAVE_SYSLOG
syslog(priority, message, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9);
#endif /* HAVE_SYSLOG */
#endif /* not (defined(HAVE_VPRINTF) || ... */
}
/*
* Output the message to standard error.
*/
if ((log_mode == FAKELOG_TO_STDERR || log_mode == FAKELOG_TO_BOTH)
&& log_flag) {
if (log_name != NULL)
fprintf(stderr, "%s: ", log_name);
#if (defined(HAVE_VPRINTF) || defined(HAVE_DOPRNT)) && defined(HAVE_VSYSLOG)
#ifdef HAVE_VPRINTF
vfprintf(stderr, message, ap);
#else /* not HAVE_VPRINTF */
#ifdef HAVE_DOPRNT
_doprnt(message, &ap, stderr);
#endif /* not HAVE_DOPRNT */
#endif /* not HAVE_VPRINTF */
#else /* not (defined(HAVE_VPRINTF) || defined(HAVE_DOPRNT)) && ... */
fprintf(stderr, message, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9);
#endif /* not (defined(HAVE_VPRINTF) || defined(HAVE_DOPRNT)) && ... */
fputc('\n', stderr);
fflush(stderr);
}
/*
* End to use the variable length arguments.
*/
#if (defined(HAVE_VPRINTF) || defined(HAVE_DOPRNT)) && defined(HAVE_VSYSLOG)
va_end(ap);
#endif /* not (defined(HAVE_VPRINTF) || defined(HAVE_DOPRNT)) && ... */
}
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