static void
real_plog(int lvl, char *fmt, va_list vargs)
{
char msg[1024];
char efmt[1024];
char *ptr = msg;
static char last_msg[1024];
static int last_count = 0, last_lvl = 0;
if (!(xlog_level & lvl))
return;
#ifdef DEBUG_MEM
checkup_mem();
#endif /* DEBUG_MEM */
expand_error(fmt, efmt, 1024);
#ifdef HAVE_VSNPRINTF
vsnprintf(ptr, 1024, efmt, vargs);
#else /* not HAVE_VSNPRINTF */
/*
* XXX: ptr is 1024 bytes long. It is possible to write into it
* more than 1024 bytes, if efmt is already large, and vargs expand
* as well. This is not as safe as using vsnprintf().
*/
vsprintf(ptr, efmt, vargs);
msg[1023] = '\0'; /* null terminate, to be sure */
#endif /* not HAVE_VSNPRINTF */
ptr += strlen(ptr);
if (ptr[-1] == '\n')
*--ptr = '\0';
#ifdef HAVE_SYSLOG
if (syslogging) {
switch (lvl) { /* from mike <*****@*****.**> */
case XLOG_FATAL:
lvl = LOG_CRIT;
break;
case XLOG_ERROR:
lvl = LOG_ERR;
break;
case XLOG_USER:
lvl = LOG_WARNING;
break;
case XLOG_WARNING:
lvl = LOG_WARNING;
break;
case XLOG_INFO:
lvl = LOG_INFO;
break;
case XLOG_DEBUG:
lvl = LOG_DEBUG;
break;
case XLOG_MAP:
lvl = LOG_DEBUG;
break;
case XLOG_STATS:
lvl = LOG_INFO;
break;
default:
lvl = LOG_ERR;
break;
}
syslog(lvl, "%s", msg);
return;
}
#endif /* HAVE_SYSLOG */
*ptr++ = '\n';
*ptr = '\0';
/*
* mimic syslog behavior: only write repeated strings if they differ
*/
switch (last_count) {
case 0: /* never printed at all */
last_count = 1;
strncpy(last_msg, msg, 1024);
last_lvl = lvl;
show_time_host_and_name(lvl); /* mimic syslog header */
fwrite(msg, ptr - msg, 1, logfp);
fflush(logfp);
break;
case 1: /* item printed once, if same, don't repeat */
if (STREQ(last_msg, msg)) {
last_count++;
} else { /* last msg printed once, new one differs */
/* last_count remains at 1 */
strncpy(last_msg, msg, 1024);
last_lvl = lvl;
show_time_host_and_name(lvl); /* mimic syslog header */
fwrite(msg, ptr - msg, 1, logfp);
fflush(logfp);
}
break;
case 100:
/*
* Don't allow repetitions longer than 100, so you can see when something
* cycles like crazy.
*/
show_time_host_and_name(last_lvl);
sprintf(last_msg, "last message repeated %d times\n", last_count);
fwrite(last_msg, strlen(last_msg), 1, logfp);
fflush(logfp);
last_count = 0; /* start from scratch */
break;
default: /* item repeated multiple times */
if (STREQ(last_msg, msg)) {
last_count++;
} else { /* last msg repeated+skipped, new one differs */
show_time_host_and_name(last_lvl);
sprintf(last_msg, "last message repeated %d times\n", last_count);
fwrite(last_msg, strlen(last_msg), 1, logfp);
strncpy(last_msg, msg, 1024);
last_count = 1;
last_lvl = lvl;
show_time_host_and_name(lvl); /* mimic syslog header */
fwrite(msg, ptr - msg, 1, logfp);
fflush(logfp);
}
break;
}
}
static void
real_plog(int lvl, const char *fmt, va_list vargs)
{
char msg[1024];
char efmt[1024];
char *ptr = msg;
static char last_msg[1024];
static int last_count = 0, last_lvl = 0;
if (!(xlog_level & lvl))
return;
#ifdef DEBUG_MEM
# if defined(HAVE_MALLINFO) && defined(HAVE_MALLOC_VERIFY)
checkup_mem();
# endif /* not defined(HAVE_MALLINFO) && defined(HAVE_MALLOC_VERIFY) */
#endif /* DEBUG_MEM */
/*
* Note: xvsnprintf() may call plog() if a truncation happened, but the
* latter has some code to break out of an infinite loop. See comment in
* xsnprintf() below.
*/
xvsnprintf(ptr, 1023, expand_error(fmt, efmt, 1024), vargs);
ptr += strlen(ptr);
if (*(ptr-1) == '\n')
*--ptr = '\0';
#ifdef HAVE_SYSLOG
if (syslogging) {
switch (lvl) { /* from mike <*****@*****.**> */
case XLOG_FATAL:
lvl = LOG_CRIT;
break;
case XLOG_ERROR:
lvl = LOG_ERR;
break;
case XLOG_USER:
lvl = LOG_WARNING;
break;
case XLOG_WARNING:
lvl = LOG_WARNING;
break;
case XLOG_INFO:
lvl = LOG_INFO;
break;
case XLOG_DEBUG:
lvl = LOG_DEBUG;
break;
case XLOG_MAP:
lvl = LOG_DEBUG;
break;
case XLOG_STATS:
lvl = LOG_INFO;
break;
default:
lvl = LOG_ERR;
break;
}
syslog(lvl, "%s", msg);
return;
}
#endif /* HAVE_SYSLOG */
*ptr++ = '\n';
*ptr = '\0';
/*
* mimic syslog behavior: only write repeated strings if they differ
*/
switch (last_count) {
case 0: /* never printed at all */
last_count = 1;
if (strlcpy(last_msg, msg, sizeof(last_msg)) >= sizeof(last_msg)) /* don't use xstrlcpy here (recursive!) */
fprintf(stderr, "real_plog: string \"%s\" truncated to \"%s\"\n", last_msg, msg);
last_lvl = lvl;
show_time_host_and_name(lvl); /* mimic syslog header */
__IGNORE(fwrite(msg, ptr - msg, 1, logfp));
fflush(logfp);
break;
case 1: /* item printed once, if same, don't repeat */
if (STREQ(last_msg, msg)) {
last_count++;
} else { /* last msg printed once, new one differs */
/* last_count remains at 1 */
if (strlcpy(last_msg, msg, sizeof(last_msg)) >= sizeof(last_msg)) /* don't use xstrlcpy here (recursive!) */
fprintf(stderr, "real_plog: string \"%s\" truncated to \"%s\"\n", last_msg, msg);
last_lvl = lvl;
show_time_host_and_name(lvl); /* mimic syslog header */
__IGNORE(fwrite(msg, ptr - msg, 1, logfp));
fflush(logfp);
}
break;
case 100:
/*
* Don't allow repetitions longer than 100, so you can see when something
* cycles like crazy.
*/
show_time_host_and_name(last_lvl);
xsnprintf(last_msg, sizeof(last_msg),
"last message repeated %d times\n", last_count);
__IGNORE(fwrite(last_msg, strlen(last_msg), 1, logfp));
fflush(logfp);
last_count = 0; /* start from scratch */
break;
default: /* item repeated multiple times */
if (STREQ(last_msg, msg)) {
last_count++;
} else { /* last msg repeated+skipped, new one differs */
show_time_host_and_name(last_lvl);
xsnprintf(last_msg, sizeof(last_msg),
"last message repeated %d times\n", last_count);
__IGNORE(fwrite(last_msg, strlen(last_msg), 1, logfp));
if (strlcpy(last_msg, msg, 1024) >= 1024) /* don't use xstrlcpy here (recursive!) */
fprintf(stderr, "real_plog: string \"%s\" truncated to \"%s\"\n", last_msg, msg);
last_count = 1;
last_lvl = lvl;
show_time_host_and_name(lvl); /* mimic syslog header */
__IGNORE(fwrite(msg, ptr - msg, 1, logfp));
fflush(logfp);
}
break;
}
}