File: [local] / src / usr.bin / cvs / log.c (download)
Revision 1.1.1.1 (vendor branch), Tue Jul 13 22:02:40 2004 UTC (19 years, 11 months ago) by jfb
Branch: OpenCVS
CVS Tags: OpenCVS_0_1 Changes since 1.1: +0 -0 lines
* initial import from the cvs-tools module
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/* $OpenBSD: log.c,v 1.1.1.1 2004/07/13 22:02:40 jfb Exp $ */
/*
* Copyright (c) 2004 Jean-Francois Brousseau <jfb@fugusec.net>
* 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. 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 ``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.
*/
#include <sys/types.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdarg.h>
#include <syslog.h>
#include "log.h"
extern char *__progname;
static char *cvs_log_levels[] = {
"debug",
"info",
"notice",
"warning",
"error",
"alert",
"error"
};
static int cvs_slpriomap[] = {
LOG_DEBUG,
LOG_INFO,
LOG_NOTICE,
LOG_WARNING,
LOG_ERR,
LOG_ALERT,
LOG_ERR,
};
static u_int cvs_log_dest = LD_STD;
static u_int cvs_log_flags = 0;
static u_int cvs_log_filters[LP_MAX + 1];
#define NB_FILTERS sizeof(cvs_log_filters)/sizeof(cvs_log_filters[0])
static struct syslog_data cvs_sl;
/*
* cvs_log_init()
*
* Initialize the logging facility of the server.
* Returns 0 on success, or -1 on failure.
*/
int
cvs_log_init(u_int dest, u_int flags)
{
int slopt;
cvs_log_dest = dest;
cvs_log_flags = flags;
/* by default, filter only LP_DEBUG and LP_INFO levels */
memset(cvs_log_filters, 0, sizeof(cvs_log_filters));
cvs_log_filters[LP_DEBUG] = 1;
cvs_log_filters[LP_INFO] = 1;
if (dest & LD_SYSLOG) {
slopt = 0;
if (dest & LD_CONS)
slopt |= LOG_CONS;
if (flags & LF_PID)
slopt |= LOG_PID;
openlog_r(__progname, slopt, LOG_DAEMON, &cvs_sl);
}
return (0);
}
/*
* cvs_log_cleanup()
*
* Cleanup the logging facility.
*/
void
cvs_log_cleanup(void)
{
closelog_r(&cvs_sl);
}
/*
* cvs_log_filter()
*
* Apply or remove filters on the logging facility. The exact operation is
* specified by the <how> and <level> arguments. The <how> arguments tells
* how the filters will be affected, and <level> gives the log levels that
* will be affected by the change.
* Returns 0 on success, or -1 on failure.
*/
int
cvs_log_filter(u_int how, u_int level)
{
u_int i;
if ((level > LP_MAX) && (level != LP_ALL)) {
cvs_log(LP_ERR, "invalid log level for filter");
return (-1);
}
switch (how) {
case LP_FILTER_SET:
if (level == LP_ALL)
for (i = 0; i < NB_FILTERS; i++)
cvs_log_filters[i] = 1;
else
cvs_log_filters[level] = 1;
break;
case LP_FILTER_UNSET:
if (level == LP_ALL)
for (i = 0; i < NB_FILTERS; i++)
cvs_log_filters[i] = 0;
else
cvs_log_filters[level] = 0;
break;
case LP_FILTER_TOGGLE:
if (level == LP_ALL)
for (i = 0; i < NB_FILTERS; i++)
cvs_log_filters[i] =
(cvs_log_filters[i] == 0) ? 1 : 0;
else
cvs_log_filters[level] =
(cvs_log_filters[level] == 0) ? 1 : 0;
break;
default:
return (-1);
}
return (0);
}
/*
* cvs_log()
*
* Log the format-string message
* The <fmt> argument should not have a terminating newline, as this is taken
* care of by the logging facility.
*/
int
cvs_log(u_int level, const char *fmt, ...)
{
int ret;
va_list vap;
va_start(vap, fmt);
ret = cvs_vlog(level, fmt, vap);
va_end(vap);
return (ret);
}
/*
* cvs_vlog()
*
* The <fmt> argument should not have a terminating newline, as this is taken
* care of by the logging facility.
*/
int
cvs_vlog(u_int level, const char *fmt, va_list vap)
{
int ecp;
pid_t pid;
char prefix[64], buf[1024], ebuf[32];
FILE *out;
ecp = 0;
if (level > LP_MAX) {
return (-1);
}
/* apply any filters */
if (cvs_log_filters[level] == 1)
return (0);
if (level == LP_ERRNO)
ecp = errno;
strlcpy(prefix, __progname, sizeof(prefix));
if (cvs_log_flags & LF_PID) {
snprintf(buf, sizeof(buf), "[%d]", (int)getpid());
strlcat(prefix, buf, sizeof(prefix));
}
vsnprintf(buf, sizeof(buf), fmt, vap);
if (level == LP_ERRNO) {
snprintf(ebuf, sizeof(ebuf), ": %s", strerror(errno));
strlcat(buf, ebuf, sizeof(buf));
}
if (cvs_log_dest & LD_STD) {
if (level <= LP_NOTICE)
out = stdout;
else
out = stderr;
fprintf(out, "%s: %s\n", prefix, buf);
}
if (cvs_log_dest & LD_SYSLOG)
syslog_r(cvs_slpriomap[level], &cvs_sl, "%s", buf);
/* preserve it just in case we changed it? */
if (level == LP_ERRNO)
errno = ecp;
return (0);
}