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/*
Authors:
Simo Sorce <ssorce@redhat.com>
Stephen Gallagher <sgallagh@redhat.com>
Copyright (C) 2009 Red Hat
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include "util/util.h"
const char *debug_prg_name = "sssd";
int debug_level = 0;
int debug_timestamps = 1;
int debug_to_file = 0;
const char *debug_log_file = "sssd";
FILE *debug_file = NULL;
errno_t set_debug_file_from_fd(const int fd)
{
FILE *dummy;
dummy = fdopen(fd, "a");
if (dummy == NULL) {
DEBUG(1, ("fdopen failed [%d][%s].\n", errno, strerror(errno)));
return errno;
}
debug_file = dummy;
return EOK;
}
void debug_fn(const char *format, ...)
{
va_list ap;
va_start(ap, format);
vfprintf(debug_file ? debug_file : stderr, format, ap);
fflush(debug_file ? debug_file : stderr);
va_end(ap);
}
void ldb_debug_messages(void *context, enum ldb_debug_level level,
const char *fmt, va_list ap)
{
int loglevel = -1;
int ret;
char * message = NULL;
switch(level) {
case LDB_DEBUG_FATAL:
loglevel = 0;
break;
case LDB_DEBUG_ERROR:
loglevel = 1;
break;
case LDB_DEBUG_WARNING:
loglevel = 6;
break;
case LDB_DEBUG_TRACE:
loglevel = 9;
break;
}
ret = vasprintf(&message, fmt, ap);
if (ret < 0) {
/* ENOMEM */
return;
}
if (loglevel <= debug_level) {
if (debug_timestamps) {
time_t rightnow = time(NULL);
char stamp[25];
memcpy(stamp, ctime(&rightnow), 24);
stamp[24] = '\0';
debug_fn("(%s) [%s] [ldb] (%d): %s\n",
stamp, debug_prg_name, loglevel, message);
} else {
debug_fn("[%s] [ldb] (%d): %s\n",
debug_prg_name, loglevel, message);
}
}
free(message);
}
int open_debug_file_ex(const char *filename, FILE **filep)
{
FILE *f = NULL;
char *logpath;
const char *log_file;
mode_t old_umask;
int ret;
if (filename == NULL) {
log_file = debug_log_file;
} else {
log_file = filename;
}
ret = asprintf(&logpath, "%s/%s.log", LOG_PATH, log_file);
if (ret == -1) {
return ENOMEM;
}
if (debug_file && !filep) fclose(debug_file);
old_umask = umask(0177);
errno = 0;
f = fopen(logpath, "a");
if (f == NULL) {
sss_log(SSS_LOG_EMERG, "Could not open file [%s]. Error: [%d][%s]\n",
logpath, errno, strerror(errno));
free(logpath);
return EIO;
}
umask(old_umask);
if (filep == NULL) {
debug_file = f;
} else {
*filep = f;
}
free(logpath);
return EOK;
}
int open_debug_file(void)
{
return open_debug_file_ex(NULL, NULL);
}
int rotate_debug_files(void)
{
int ret;
errno_t error;
if (!debug_to_file) return EOK;
do {
error = 0;
ret = fclose(debug_file);
if (ret != 0) {
error = errno;
}
/* Check for EINTR, which means we should retry
* because the system call was interrupted by a
* signal
*/
} while (error == EINTR);
if (error != 0) {
/* Even if we were unable to close the debug log, we need to make
* sure that we open up a new one. Log rotation will remove the
* current file, so all debug messages will be disappearing.
*
* We should write an error to the syslog warning of the resource
* leak and then proceed with opening the new file.
*/
sss_log(SSS_LOG_ALERT, "Could not close debug file [%s]. [%d][%s]\n",
debug_log_file, error, strerror(error));
sss_log(SSS_LOG_ALERT, "Attempting to open new file anyway. "
"Be aware that this is a resource leak\n");
}
debug_file = NULL;
return open_debug_file();
}
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