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/*
* dhcpcd - DHCP client daemon
* Copyright 2006-2008 Roy Marples <roy@marples.name>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
#define SYSLOG_NAMES
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include "common.h"
#include "logger.h"
static int loglevel = LOG_WARNING;
static char logprefix[12] = {0};
int logtolevel (const char *priority)
{
CODE *c;
if (isdigit ((int) *priority))
return (atoi (priority));
for (c = prioritynames; c->c_name; c++)
if (! strcasecmp (priority, c->c_name))
return (c->c_val);
return (-1);
}
static const char *leveltolog (int level) {
CODE *c;
for (c = prioritynames; c->c_name; c++)
if (c->c_val == level)
return (c->c_name);
return (NULL);
}
void setloglevel (int level)
{
loglevel = level;
}
void setlogprefix (const char *prefix)
{
snprintf (logprefix, sizeof (logprefix), "%s", prefix);
}
void logger (int level, const char *fmt, ...)
{
va_list p;
va_list p2;
FILE *f = stderr;
va_start (p, fmt);
va_copy (p2, p);
if (level <= LOG_ERR || level <= loglevel) {
if (level == LOG_DEBUG || level == LOG_INFO)
f = stdout;
fprintf (f, "%s, %s", leveltolog (level), logprefix);
vfprintf (f, fmt, p);
fputc ('\n', f);
/* stdout, stderr may be re-directed to some kind of buffer.
* So we always flush to ensure it's written. */
fflush (f);
}
if (level < LOG_DEBUG || level <= loglevel) {
size_t len = strlen (logprefix);
size_t fmt2len = strlen (fmt) + len + 1;
char *fmt2 = malloc (sizeof (char) * fmt2len);
char *pf = fmt2;
if (fmt2) {
memcpy (pf, logprefix, len);
pf += len;
strlcpy (pf, fmt, fmt2len - len);
vsyslog (level, fmt2, p2);
free (fmt2);
} else {
vsyslog (level, fmt, p2);
syslog (LOG_ERR, "logger: memory exhausted");
exit (EXIT_FAILURE);
}
}
va_end (p2);
va_end (p);
}
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