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bird/sysdep/unix/log.c
Martin Mares 98e87c8628 Finer grained logging levels:
#define L_DEBUG "\001"   /* Debugging messages */
#define L_INFO "\002"    /* Informational messages */
#define L_WARN "\003"    /* Warnings */
#define L_ERR "\004"     /* Errors */
#define L_AUTH "\005"    /* Authorization failed etc. */
#define L_FATAL "\006"   /* Fatal errors */
#define L_TRACE "\002"   /* Protocol tracing */
#define L_INFO "\003"    /* Informational messages */
#define L_REMOTE "\004"  /* Remote protocol errors */
#define L_WARN "\004"    /* Local warnings */
#define L_ERR "\005"     /* Local errors */
#define L_AUTH "\006"    /* Authorization failed etc. */
#define L_FATAL "\007"   /* Fatal errors */
#define L_BUG "\010"     /* BIRD bugs */

Introduced bug() which is like die(), but with level L_BUG. Protocols
should _never_ call die() as it should be used only during initialization
and on irrecoverable catastrophic events like out of memory.

Also introduced ASSERT() which behaves like normal assert(), but it calls
bug() when assertion fails. When !defined(DEBUGGING), it gets ignored.
1998-12-20 14:24:35 +00:00

184 lines
2.9 KiB
C

/*
* BIRD Library -- Logging Functions
*
* (c) 1998 Martin Mares <mj@ucw.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <sys/time.h>
#include "nest/bird.h"
#include "lib/string.h"
static int log_inited;
static FILE *logf = NULL;
static FILE *dbgf = NULL;
#ifdef HAVE_SYSLOG
#include <sys/syslog.h>
static int syslog_priorities[] = {
LOG_INFO,
LOG_DEBUG,
LOG_INFO,
LOG_WARNING,
LOG_ERR,
LOG_NOTICE,
LOG_CRIT
};
#endif
static char *class_names[] = {
"???",
"DBG",
"INFO",
"WARN",
"ERR",
"AUTH",
"FATAL"
};
/* FIXME: Use better buffering */
static void
bvfprintf(FILE *f, char *fmt, va_list args)
{
char buf[4096];
int n;
n = bvsnprintf(buf, sizeof(buf), fmt, args);
if (n >= 0)
fwrite(buf, n, sizeof(char), f);
else
fprintf(stderr, "BIRD: warning: logging buffer overflow!\n");
}
static void
bfprintf(FILE *f, char *fmt, ...)
{
va_list args;
va_start(args, fmt);
bvfprintf(f, fmt, args);
va_end(args);
}
static void
vlog(int class, char *msg, va_list args)
{
if (logf)
{
time_t now = time(NULL);
struct tm *tm = localtime(&now);
bfprintf(logf, "%02d-%02d-%04d %02d:%02d:%02d <%s> ",
tm->tm_mday,
tm->tm_mon+1,
tm->tm_year+1900,
tm->tm_hour,
tm->tm_min,
tm->tm_sec,
class_names[class]);
bvfprintf(logf, msg, args);
fputc('\n', logf);
fflush(logf);
}
#ifdef HAVE_SYSLOG
else if (log_inited)
vsyslog(syslog_priorities[class], msg, args);
#endif
else
{
fputs("bird: ", stderr);
bvfprintf(stderr, msg, args);
fputc('\n', stderr);
fflush(stderr);
}
}
void
log(char *msg, ...)
{
int class = 1;
va_list args;
va_start(args, msg);
if (*msg >= 1 && *msg <= 8)
class = *msg++;
vlog(class, msg, args);
va_end(args);
}
void
bug(char *msg, ...)
{
va_list args;
va_start(args, msg);
vlog(L_BUG[0], msg, args);
exit(1);
}
void
die(char *msg, ...)
{
va_list args;
va_start(args, msg);
vlog(L_FATAL[0], msg, args);
exit(1);
}
void
debug(char *msg, ...)
{
va_list args;
va_start(args, msg);
if (dbgf)
bvfprintf(dbgf, msg, args);
va_end(args);
}
void
log_init(char *f)
{
FILE *new;
if (!f)
new = stderr;
else if (!*f)
{
new = NULL;
#ifdef HAVE_SYSLOG
openlog("bird", LOG_CONS | LOG_NDELAY, LOG_DAEMON);
#endif
}
else if (!(new = fopen(f, "a")))
{
log(L_ERR "Unable to open log file `%s': %m", f);
return;
}
if (logf && logf != stderr)
fclose(logf);
logf = new;
log_inited = 1;
}
void
log_init_debug(char *f)
{
if (dbgf && dbgf != stderr)
fclose(dbgf);
if (!f)
dbgf = stderr;
else if (!*f)
dbgf = NULL;
else if (!(dbgf = fopen(f, "a")))
log(L_ERR "Error opening debug file `%s': %m", f);
}