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/* $OpenBSD: log.c,v 1.2 1998/11/15 00:43:59 niklas Exp $ */
/*
* Copyright (c) 1998 Niklas Hallqvist. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Ericsson Radio Systems.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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 DAMAGE.
*/
/*
* This code was written under funding by Ericsson Radio Systems.
*/
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <syslog.h>
#ifdef __STDC__
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#include "log.h"
/*
* We cannot do the log strings dynamically sizeable as out of memory is one
* of the situations we need to report about.
*/
#define LOG_SIZE 200
static void _log_print (int, int, const char *, va_list);
static FILE *log_output = stderr;
static int log_level[LOG_ENDCLASS];
void
log_to (FILE *f)
{
if (!log_output && f)
closelog ();
log_output = f;
if (!f)
openlog ("isakmpd", 0, LOG_DAEMON);
}
static void
_log_print (int error, int level, const char *fmt, va_list ap)
{
char buffer[LOG_SIZE];
int len;
len = vsnprintf (buffer, LOG_SIZE, fmt, ap);
if (len < LOG_SIZE - 1 && error)
snprintf (buffer + len, LOG_SIZE - len, ": %s", strerror (errno));
if (log_output)
{
fputs (buffer, log_output);
fputc ('\n', log_output);
}
else
syslog (level, buffer);
}
void
#ifdef __STDC__
log_debug (int cls, int level, const char *fmt, ...)
#else
log_debug (cls, level, clfmt, va_alist)
int cls;
int level;
const char *fmt;
va_dcl
#endif
{
va_list ap;
/*
* If we are not debugging this class, or the level is too low, just return.
*/
if (log_level[cls] == 0 || level > log_level[cls])
return;
#ifdef __STDC__
va_start (ap, fmt);
#else
va_start (ap);
fmt = va_arg (ap, const char *);
#endif
_log_print (0, LOG_DEBUG, fmt, ap);
va_end (ap);
}
void
log_debug_buf (int cls, int level, const char *header, const u_int8_t *buf,
size_t sz)
{
char s[73];
int i, j;
/*
* If we are not debugging this class, or the level is too low, just return.
*/
if (log_level[cls] == 0 || level > log_level[cls])
return;
log_debug (cls, level, "%s:", header);
for (i = j = 0; i < sz;)
{
sprintf (s + j, "%02x", buf[i++]);
j += 2;
if (i % 4 == 0)
{
if (i % 32 == 0)
{
s[j] = '\0';
log_debug (cls, level, "%s", s);
j = 0;
}
else
s[j++] = ' ';
}
}
if (j)
{
s[j] = '\0';
log_debug (cls, level, "%s", s);
}
}
void
#ifdef __STDC__
log_print (const char *fmt, ...)
#else
log_print (fmt, va_alist)
const char *fmt;
va_dcl
#endif
{
va_list ap;
#ifdef __STDC__
va_start (ap, fmt);
#else
va_start (ap);
fmt = va_arg (ap, const char *);
#endif
_log_print (0, LOG_NOTICE, fmt, ap);
va_end (ap);
}
void
#ifdef __STDC__
log_error (const char *fmt, ...)
#else
log_error (fmt, va_alist)
const char *fmt;
va_dcl
#endif
{
va_list ap;
#ifdef __STDC__
va_start (ap, fmt);
#else
va_start (ap);
fmt = va_arg (ap, const char *);
#endif
_log_print (1, LOG_ERR, fmt, ap);
va_end (ap);
}
void
#ifdef __STDC__
log_fatal (const char *fmt, ...)
#else
log_fatal (fmt, va_alist)
const char *fmt;
va_dcl
#endif
{
va_list ap;
#ifdef __STDC__
va_start (ap, fmt);
#else
va_start (ap);
fmt = va_arg (ap, const char *);
#endif
_log_print (1, LOG_CRIT, fmt, ap);
va_end (ap);
exit (1);
}
void
log_debug_cmd (int cls, int level)
{
if (cls < 0 || cls >= LOG_ENDCLASS)
{
log_print ("log_debug_cmd: invalid debugging class %d", cls);
return;
}
if (level < 0)
{
log_print ("log_debug_cmd: invalid debugging level %d for class %d",
level, cls);
return;
}
if (level == log_level[cls])
log_print ("log_debug_cmd: log level unchanged for class %d", cls);
else
{
log_print ("log_debug_cmd: log level changed from %d to %d for class %d",
log_level[cls], level, cls);
log_level[cls] = level;
}
}
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