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wmaker/WINGs/error.c
David Maciejak a3ce005980 WINGs: Add support for syslog messaging
This patch is used to add support for syslog messaging implemented in
WINGs lib directly, so available from the lib itself and wmaker too.
I believe it will in a first time help to get some logging info
centralized in one point, and in a second time maybe add some info
level messages like wmaker is starting, stopping, restarting and else.

For now, it's built by default when the syslog support is found, maybe
we could also disable it by default.
2014-04-24 10:47:45 +01:00

152 lines
3.7 KiB
C

/*
* Window Maker miscelaneous function library
*
* Copyright (c) 1997-2003 Alfredo K. Kojima
*
* 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 of the License, 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include "wconfig.h"
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <WUtil.h>
#include <WINGsP.h>
#ifdef HAVE_SYSLOG_H
#include <syslog.h>
static Bool syslog_initialized = False;
static void syslog_open(char *prog_name)
{
int options;
if (!prog_name)
prog_name = "WINGs";
options = LOG_PID;
openlog(prog_name, options, LOG_DAEMON);
syslog_initialized = True;
}
static void syslog_message(int prio, char *prog_name, char *msg)
{
if (!syslog_initialized)
syslog_open(prog_name);
//jump over the program name cause syslog is already displaying it
syslog(prio, "%s", msg + strlen(prog_name));
}
void w_syslog_close(void)
{
if (syslog_initialized) {
closelog();
syslog_initialized = False;
}
}
#endif
void __wmessage(const char *func, const char *file, int line, int type, const char *msg, ...)
{
va_list args;
char *buf;
static int linemax = 0;
int truncated = 0;
#ifdef HAVE_SYSLOG
int syslog_priority = LOG_INFO;
const char *syslog_prefix = "INFO";
#endif
if (linemax == 0) {
#ifdef HAVE_SYSCONF
linemax = sysconf(_SC_LINE_MAX);
if (linemax == -1) {
/* I'd like to know of this ever fires */
fprintf(stderr, "%s %d: sysconf(_SC_LINE_MAX) returned error\n",
__FILE__, __LINE__);
linemax = 512;
}
#else /* !HAVE_SYSCONF */
fprintf(stderr, "%s %d: Your system does not have sysconf(3); "
"let wmaker-dev@windowmaker.org know.\n", __FILE__, __LINE__);
linemax = 512;
#endif /* HAVE_SYSCONF */
}
buf = wmalloc(linemax);
fflush(stdout);
/* message format: <wings_progname>(function(file:line): <type?>: <message>"\n" */
strncat(buf, _WINGS_progname ? _WINGS_progname : "WINGs", linemax - 1);
snprintf(buf + strlen(buf), linemax - strlen(buf), "(%s(%s:%d))", func, file, line);
strncat(buf, ": ", linemax - 1 - strlen(buf));
switch (type) {
case WMESSAGE_TYPE_FATAL:
strncat(buf, _("fatal: "), linemax - 1 - strlen(buf));
#ifdef HAVE_SYSLOG
syslog_priority = LOG_CRIT;
syslog_prefix = "FATAL";
#endif
break;
case WMESSAGE_TYPE_ERROR:
strncat(buf, _("error: "), linemax - 1 - strlen(buf));
#ifdef HAVE_SYSLOG
syslog_priority = LOG_ERR;
syslog_prefix = "ERROR";
#endif
break;
case WMESSAGE_TYPE_WARNING:
strncat(buf, _("warning: "), linemax - 1 - strlen(buf));
#ifdef HAVE_SYSLOG
syslog_priority = LOG_WARNING;
syslog_prefix = "WARNING";
#endif
break;
case WMESSAGE_TYPE_MESSAGE:
/* FALLTHROUGH */
default: /* should not happen, but doesn't hurt either */
break;
}
va_start(args, msg);
if (vsnprintf(buf + strlen(buf), linemax - strlen(buf), msg, args) >= linemax - strlen(buf))
truncated = 1;
va_end(args);
fputs(buf, stderr);
#ifdef HAVE_SYSLOG
syslog_message(syslog_priority, _WINGS_progname ? _WINGS_progname : "WINGs", buf);
#endif
if (truncated)
fputs("*** message truncated ***", stderr);
fputs("\n", stderr);
wfree(buf);
}