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/* $Id: zlog.c,v 1.7 2008/05/22 21:08:32 anight Exp $ */
/* (c) 2004-2007 Andrei Nigmatulin */
#include "fpm_config.h"
#include <stdio.h>
#include <unistd.h>
#include <time.h>
#include <string.h>
#include <stdarg.h>
#include <sys/time.h>
#include <errno.h>
#include "php_syslog.h"
#include "zlog.h"
#include "fpm.h"
#include "zend_portability.h"
#define MAX_LINE_LENGTH 1024
static int zlog_fd = -1;
static int zlog_level = ZLOG_NOTICE;
static int launched = 0;
static void (*external_logger)(int, char *, size_t) = NULL;
static const char *level_names[] = {
[ZLOG_DEBUG] = "DEBUG",
[ZLOG_NOTICE] = "NOTICE",
[ZLOG_WARNING] = "WARNING",
[ZLOG_ERROR] = "ERROR",
[ZLOG_ALERT] = "ALERT",
};
#ifdef HAVE_SYSLOG_H
const int syslog_priorities[] = {
[ZLOG_DEBUG] = LOG_DEBUG,
[ZLOG_NOTICE] = LOG_NOTICE,
[ZLOG_WARNING] = LOG_WARNING,
[ZLOG_ERROR] = LOG_ERR,
[ZLOG_ALERT] = LOG_ALERT,
};
#endif
void zlog_set_external_logger(void (*logger)(int, char *, size_t)) /* {{{ */
{
external_logger = logger;
}
/* }}} */
const char *zlog_get_level_name(int log_level) /* {{{ */
{
if (log_level < 0) {
log_level = zlog_level;
} else if (log_level < ZLOG_DEBUG || log_level > ZLOG_ALERT) {
return "unknown value";
}
return level_names[log_level];
}
/* }}} */
void zlog_set_launched(void) {
launched = 1;
}
size_t zlog_print_time(struct timeval *tv, char *timebuf, size_t timebuf_len) /* {{{ */
{
struct tm t;
size_t len;
len = strftime(timebuf, timebuf_len, "[%d-%b-%Y %H:%M:%S", localtime_r((const time_t *) &tv->tv_sec, &t));
if (zlog_level == ZLOG_DEBUG) {
len += snprintf(timebuf + len, timebuf_len - len, ".%06d", (int) tv->tv_usec);
}
len += snprintf(timebuf + len, timebuf_len - len, "] ");
return len;
}
/* }}} */
int zlog_set_fd(int new_fd) /* {{{ */
{
int old_fd = zlog_fd;
zlog_fd = new_fd;
return old_fd;
}
/* }}} */
int zlog_set_level(int new_value) /* {{{ */
{
int old_value = zlog_level;
if (new_value < ZLOG_DEBUG || new_value > ZLOG_ALERT) return old_value;
zlog_level = new_value;
return old_value;
}
/* }}} */
void vzlog(const char *function, int line, int flags, const char *fmt, va_list args) /* {{{ */
{
struct timeval tv;
char buf[MAX_LINE_LENGTH];
const size_t buf_size = MAX_LINE_LENGTH;
size_t len = 0;
int truncated = 0;
int saved_errno;
if (external_logger) {
va_list ap;
va_copy(ap, args);
len = vsnprintf(buf, buf_size, fmt, ap);
va_end(ap);
if (len >= buf_size) {
memcpy(buf + buf_size - sizeof("..."), "...", sizeof("...") - 1);
len = buf_size - 1;
}
external_logger(flags & ZLOG_LEVEL_MASK, buf, len);
len = 0;
memset(buf, '\0', buf_size);
}
if ((flags & ZLOG_LEVEL_MASK) < zlog_level) {
return;
}
saved_errno = errno;
#ifdef HAVE_SYSLOG_H
if (zlog_fd == ZLOG_SYSLOG /* && !fpm_globals.is_child */) {
len = 0;
if (zlog_level == ZLOG_DEBUG) {
len += snprintf(buf, buf_size, "[%s] %s(), line %d: ", level_names[flags & ZLOG_LEVEL_MASK], function, line);
} else {
len += snprintf(buf, buf_size, "[%s] ", level_names[flags & ZLOG_LEVEL_MASK]);
}
} else
#endif
{
if (!fpm_globals.is_child) {
gettimeofday(&tv, 0);
len = zlog_print_time(&tv, buf, buf_size);
}
if (zlog_level == ZLOG_DEBUG) {
if (!fpm_globals.is_child) {
len += snprintf(buf + len, buf_size - len, "%s: pid %d, %s(), line %d: ", level_names[flags & ZLOG_LEVEL_MASK], getpid(), function, line);
} else {
len += snprintf(buf + len, buf_size - len, "%s: %s(), line %d: ", level_names[flags & ZLOG_LEVEL_MASK], function, line);
}
} else {
len += snprintf(buf + len, buf_size - len, "%s: ", level_names[flags & ZLOG_LEVEL_MASK]);
}
}
if (len > buf_size - 1) {
truncated = 1;
}
if (!truncated) {
len += vsnprintf(buf + len, buf_size - len, fmt, args);
if (len >= buf_size) {
truncated = 1;
}
}
if (!truncated) {
if (flags & ZLOG_HAVE_ERRNO) {
len += snprintf(buf + len, buf_size - len, ": %s (%d)", strerror(saved_errno), saved_errno);
if (len >= buf_size) {
truncated = 1;
}
}
}
if (truncated) {
memcpy(buf + buf_size - sizeof("..."), "...", sizeof("...") - 1);
len = buf_size - 1;
}
#ifdef HAVE_SYSLOG_H
if (zlog_fd == ZLOG_SYSLOG) {
buf[len] = '\0';
php_syslog(syslog_priorities[zlog_level], "%s", buf);
buf[len++] = '\n';
} else
#endif
{
buf[len++] = '\n';
zend_quiet_write(zlog_fd > -1 ? zlog_fd : STDERR_FILENO, buf, len);
}
if (zlog_fd != STDERR_FILENO && zlog_fd != -1 && !launched && (flags & ZLOG_LEVEL_MASK) >= ZLOG_NOTICE) {
zend_quiet_write(STDERR_FILENO, buf, len);
}
}
/* }}} */
void zlog_ex(const char *function, int line, int flags, const char *fmt, ...) /* {{{ */ {
va_list args;
va_start(args, fmt);
vzlog(function, line, flags, fmt, args);
va_end(args);
}
/* }}} */
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