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use vsnprintf, now portable because of isc/print.c.

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removed static forward declaration of isc_log_vwrite(), now public.
declared assignchannel() as static.
This commit is contained in:
David Lawrence
1999-10-11 14:50:51 +00:00
parent 899f7f9af5
commit 135808ceb1
1 changed files with 7 additions and 28 deletions
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35
lib/isc/log.c
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@@ -15,18 +15,15 @@
* SOFTWARE. * SOFTWARE.
*/ */
/* $Id: log.c,v 1.4 1999/10/11 13:28:49 tale Exp $ */ /* $Id: log.c,v 1.5 1999/10/11 14:50:51 tale Exp $ */
/* Principal Authors: DCL */ /* Principal Authors: DCL */
#include <errno.h> #include <errno.h>
#include <stdarg.h>
#include <stdio.h> /* For remove(). */
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <time.h> #include <time.h>
#include <limits.h> #include <limits.h>
#include <sys/types.h>
#include <sys/stat.h> #include <sys/stat.h>
#include <isc/assertions.h> #include <isc/assertions.h>
@@ -142,11 +139,7 @@ isc_logchannellist_t default_channel;
/* /*
* Forward declarations. * Forward declarations.
*/ */
static void static isc_result_t
isc_log_vwrite(isc_log_t *lctx, isc_logcategory_t *category,
isc_logmodule_t *module, int level, const char *format,
va_list args);
isc_result_t
assignchannel(isc_log_t *lctx, unsigned int category_id, assignchannel(isc_log_t *lctx, unsigned int category_id,
isc_logmodule_t *module, isc_logchannel_t *channel); isc_logmodule_t *module, isc_logchannel_t *channel);
@@ -548,7 +541,7 @@ isc_log_closefilelogs(isc_log_t *lctx) {
**** Internal functions **** Internal functions
****/ ****/
isc_result_t static isc_result_t
assignchannel(isc_log_t *lctx, unsigned int category_id, assignchannel(isc_log_t *lctx, unsigned int category_id,
isc_logmodule_t *module, isc_logchannel_t *channel) isc_logmodule_t *module, isc_logchannel_t *channel)
{ {
@@ -851,25 +844,11 @@ isc_log_vwrite(isc_log_t *lctx, isc_logcategory_t *category,
} }
/* /*
* Oh, that vsnprintf were ANSI C portable. * Only format the message once.
*/ */
if (lctx->buffer[0] == '\0' && if (lctx->buffer[0] == '\0')
vsprintf(lctx->buffer, format, args) > LOG_BUFFER_SIZE) { (void)vsnprintf(lctx->buffer, sizeof(lctx->buffer),
/* format, args);
* vsprintf() overran its buffer. This might have
* just been because the buffer was too small, or
* in the worst case it was a malicious attack on the
* program. In any event, who knows what got
* corrupted in memory. It is safest just to exit.
*
* If it _was_ an attack, the attackers have
* unfortunately succeeded in a denial of service.
* XxXDCL NT
*/
syslog(LOG_CRIT, "vsprintf overran its buffer; "
"possible hack attempt, exiting");
exit(1);
}
switch (channel->type) { switch (channel->type) {
case ISC_LOG_TOFILE: case ISC_LOG_TOFILE: