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/*
* Copyright (C) 2007 Stig Venaas <venaas@uninett.no>
* Copyright (C) 2010 NORDUnet A/S
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*/
#ifndef SYS_SOLARIS9
#include <stdint.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <strings.h>
#include <time.h>
#include <sys/time.h>
#include <syslog.h>
#include <errno.h>
#include <assert.h>
#include "debug.h"
#include "util.h"
static char *debug_ident = NULL;
static uint8_t debug_level = DBG_INFO;
static char *debug_filepath = NULL;
static FILE *debug_file = NULL;
static int debug_syslogfacility = 0;
static uint8_t debug_timestamp = 0;
void debug_init(char *ident) {
debug_file = stderr;
setvbuf(debug_file, NULL, _IONBF, 0);
debug_ident = ident;
}
void debug_set_level(uint8_t level) {
switch (level) {
case 1:
debug_level = DBG_ERR;
return;
case 2:
debug_level = DBG_WARN;
return;
case 3:
debug_level = DBG_NOTICE;
return;
case 4:
debug_level = DBG_INFO;
return;
case 5:
debug_level = DBG_DBG;
return;
}
}
void debug_timestamp_on() {
debug_timestamp = 1;
}
uint8_t debug_get_level() {
return debug_level;
}
int debug_set_destination(char *dest) {
static const char *facstrings[] = { "LOG_DAEMON", "LOG_MAIL", "LOG_USER", "LOG_LOCAL0",
"LOG_LOCAL1", "LOG_LOCAL2", "LOG_LOCAL3", "LOG_LOCAL4",
"LOG_LOCAL5", "LOG_LOCAL6", "LOG_LOCAL7", NULL };
static const int facvals[] = { LOG_DAEMON, LOG_MAIL, LOG_USER, LOG_LOCAL0,
LOG_LOCAL1, LOG_LOCAL2, LOG_LOCAL3, LOG_LOCAL4,
LOG_LOCAL5, LOG_LOCAL6, LOG_LOCAL7 };
extern int errno;
int i;
if (!strncasecmp(dest, "file:///", 8)) {
debug_filepath = stringcopy(dest + 7, 0);
debug_file = fopen(debug_filepath, "a");
if (!debug_file) {
debug_file = stderr;
debugx(1, DBG_ERR, "Failed to open logfile %s\n%s",
debug_filepath, strerror(errno));
}
setvbuf(debug_file, NULL, _IONBF, 0);
return 1;
}
if (!strncasecmp(dest, "x-syslog://", 11)) {
dest += 11;
if (*dest == '/')
dest++;
if (*dest) {
for (i = 0; facstrings[i]; i++)
if (!strcasecmp(dest, facstrings[i]))
break;
if (!facstrings[i])
debugx(1, DBG_ERR, "Unknown syslog facility %s", dest);
debug_syslogfacility = facvals[i];
} else
debug_syslogfacility = LOG_DAEMON;
openlog(debug_ident, LOG_PID, debug_syslogfacility);
return 1;
}
debug(DBG_ERR, "Unknown log destination, exiting %s", dest);
exit(1);
}
void debug_reopen_log() {
extern int errno;
/* not a file, noop, return success */
if (!debug_filepath) {
debug(DBG_ERR, "skipping reopen");
return;
}
if (debug_file != stderr)
fclose(debug_file);
debug_file = fopen(debug_filepath, "a");
if (debug_file)
debug(DBG_ERR, "Reopened logfile %s", debug_filepath);
else {
debug_file = stderr;
debug(DBG_ERR, "Failed to open logfile %s, using stderr\n%s",
debug_filepath, strerror(errno));
}
setvbuf(debug_file, NULL, _IONBF, 0);
}
void debug_logit(uint8_t level, const char *format, va_list ap) {
struct timeval now;
char *timebuf;
int priority;
if (debug_syslogfacility) {
switch (level) {
case DBG_DBG:
priority = LOG_DEBUG;
break;
case DBG_INFO:
priority = LOG_INFO;
break;
case DBG_NOTICE:
priority = LOG_NOTICE;
break;
case DBG_WARN:
priority = LOG_WARNING;
break;
case DBG_ERR:
priority = LOG_ERR;
break;
default:
priority = LOG_DEBUG;
}
vsyslog(priority, format, ap);
} else {
if (debug_timestamp && (timebuf = malloc(256))) {
gettimeofday(&now, NULL);
ctime_r(&now.tv_sec, timebuf);
timebuf[strlen(timebuf) - 1] = '\0';
fprintf(debug_file, "%s: ", timebuf + 4);
free(timebuf);
}
vfprintf(debug_file, format, ap);
fprintf(debug_file, "\n");
}
}
void debug(uint8_t level, char *format, ...) {
va_list ap;
if (level < debug_level)
return;
va_start(ap, format);
debug_logit(level, format, ap);
va_end(ap);
}
void debugx(int status, uint8_t level, char *format, ...) {
if (level >= debug_level) {
va_list ap;
va_start(ap, format);
debug_logit(level, format, ap);
va_end(ap);
}
exit(status);
}
void debugerrno(int err, uint8_t level, char *format, ...) {
if (level >= debug_level) {
va_list ap;
size_t len = strlen(format);
char *tmp = malloc(len + 1024 + 2);
assert(tmp);
strcpy(tmp, format);
tmp[len++] = ':';
tmp[len++] = ' ';
if (strerror_r(err, tmp + len, 1024))
tmp = format;
va_start(ap, format);
debug_logit(level, tmp, ap);
va_end(ap);
}
}
void debugerrnox(int err, uint8_t level, char *format, ...) {
if (level >= debug_level) {
va_list ap;
va_start(ap, format);
debugerrno(err, level, format, ap);
va_end(ap);
}
exit(err);
}
/* Local Variables: */
/* c-file-style: "stroustrup" */
/* End: */
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