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#ifndef lint
static char *rcsid = "$Id: log.c,v 1.1.1.1 2003/06/04 00:25:53 marka Exp $";
#endif
/*
* Copyright (c) 2000 Japan Network Information Center. All rights reserved.
*
* By using this file, you agree to the terms and conditions set forth bellow.
*
* LICENSE TERMS AND CONDITIONS
*
* The following License Terms and Conditions apply, unless a different
* license is obtained from Japan Network Information Center ("JPNIC"),
* a Japanese association, Kokusai-Kougyou-Kanda Bldg 6F, 2-3-4 Uchi-Kanda,
* Chiyoda-ku, Tokyo 101-0047, Japan.
*
* 1. Use, Modification and Redistribution (including distribution of any
* modified or derived work) in source and/or binary forms is permitted
* under this License Terms and Conditions.
*
* 2. Redistribution of source code must retain the copyright notices as they
* appear in each source code file, this License Terms and Conditions.
*
* 3. Redistribution in binary form must reproduce the Copyright Notice,
* this License Terms and Conditions, in the documentation and/or other
* materials provided with the distribution. For the purposes of binary
* distribution the "Copyright Notice" refers to the following language:
* "Copyright (c) 2000-2002 Japan Network Information Center. All rights reserved."
*
* 4. The name of JPNIC may not be used to endorse or promote products
* derived from this Software without specific prior written approval of
* JPNIC.
*
* 5. Disclaimer/Limitation of Liability: THIS SOFTWARE IS PROVIDED BY JPNIC
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JPNIC BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*/
#include <config.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <idn/log.h>
#define LOGLEVEL_ENV "IDN_LOG_LEVEL"
#ifdef DEBUG
#define DEFAULT_LOG_LEVEL idn_log_level_info
#else
#define DEFAULT_LOG_LEVEL idn_log_level_error
#endif
static int log_level = -1;
static idn_log_proc_t log_proc;
static void initialize(void);
static void log(int level, const char *fmt, va_list args);
static void log_to_stderr(int level, const char *buf);
void
idn_log_fatal(const char *fmt, ...) {
va_list args;
va_start(args, fmt);
log(idn_log_level_fatal, fmt, args);
va_end(args);
exit(1);
}
void
idn_log_error(const char *fmt, ...) {
va_list args;
va_start(args, fmt);
log(idn_log_level_error, fmt, args);
va_end(args);
}
void
idn_log_warning(const char *fmt, ...) {
va_list args;
va_start(args, fmt);
log(idn_log_level_warning, fmt, args);
va_end(args);
}
void
idn_log_info(const char *fmt, ...) {
va_list args;
va_start(args, fmt);
log(idn_log_level_info, fmt, args);
va_end(args);
}
void
idn_log_trace(const char *fmt, ...) {
va_list args;
va_start(args, fmt);
log(idn_log_level_trace, fmt, args);
va_end(args);
}
void
idn_log_dump(const char *fmt, ...) {
va_list args;
va_start(args, fmt);
log(idn_log_level_dump, fmt, args);
va_end(args);
}
void
idn_log_setlevel(int level) {
if (level >= 0)
log_level = level;
}
int
idn_log_getlevel(void) {
if (log_level < 0)
initialize();
return log_level;
}
void
idn_log_setproc(idn_log_proc_t proc) {
if (proc == NULL)
log_proc = log_to_stderr;
else
log_proc = proc;
}
static void
initialize(void) {
char *s;
if (log_level < 0) {
if ((s = getenv(LOGLEVEL_ENV)) != NULL) {
int level = atoi(s);
if (level >= 0)
log_level = level;
}
if (log_level < 0)
log_level = DEFAULT_LOG_LEVEL;
}
if (log_proc == NULL)
log_proc = log_to_stderr;
}
static void
log(int level, const char *fmt, va_list args) {
char buf[1024];
initialize();
if (log_level < level)
return;
#if HAVE_VSNPRINTF
(void)vsnprintf(buf, sizeof(buf), fmt, args);
#else
/* Let's hope 1024 is enough.. */
(void)vsprintf(buf, fmt, args);
#endif
(*log_proc)(level, buf);
}
static void
log_to_stderr(int level, const char *buf) {
char *title;
char tmp[20];
switch (level) {
case idn_log_level_fatal:
title = "FATAL";
break;
case idn_log_level_error:
title = "ERROR";
break;
case idn_log_level_warning:
title = "WARNING";
break;
case idn_log_level_info:
title = "INFO";
break;
case idn_log_level_trace:
title = "TRACE";
break;
case idn_log_level_dump:
title = "DUMP";
break;
default:
(void)sprintf(tmp, "LEVEL%d", level);
title = tmp;
break;
}
fprintf(stderr, "%u: [%s] %s", (unsigned int)getpid(), title, buf);
}
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