libuhttpd/src/log.c

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/*
* Copyright (C) 2017 Jianhui Zhao <jianhuizhao329@gmail.com>
*
* 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/>.
*/
#include "uhttp/log.h"
void __uh_log(const char *filename, int line, int priority, const char *format, ...)
{
va_list ap;
static char buf[128];
snprintf(buf, sizeof(buf), "(%s:%d) ", filename, line);
va_start(ap, format);
vsnprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), format, ap);
va_end(ap);
if (priority == LOG_ERR && errno > 0) {
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), ":%s", strerror(errno));
errno = 0;
}
syslog(priority, "%s", buf);
#if (UHTTP_DEBUG)
fprintf(stderr, "%s\n", buf);
#else
if (priority == LOG_ERR)
fprintf(stderr, "%s\n", buf);
#endif
}