94 lines
1.9 KiB
C
94 lines
1.9 KiB
C
/* $NetBSD: diag.c,v 1.11 2015/10/14 15:54:21 christos Exp $ */
|
|
|
|
/*
|
|
* Routines to report various classes of problems. Each report is decorated
|
|
* with the current context (file name and line number), if available.
|
|
*
|
|
* tcpd_warn() reports a problem and proceeds.
|
|
*
|
|
* tcpd_jump() reports a problem and jumps.
|
|
*
|
|
* Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#) diag.c 1.1 94/12/28 17:42:20";
|
|
#else
|
|
__RCSID("$NetBSD: diag.c,v 1.11 2015/10/14 15:54:21 christos Exp $");
|
|
#endif
|
|
#endif
|
|
|
|
/* System libraries */
|
|
|
|
#include <syslog.h>
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <setjmp.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
|
|
/* Local stuff */
|
|
|
|
#include "tcpd.h"
|
|
|
|
struct tcpd_context tcpd_context;
|
|
jmp_buf tcpd_buf;
|
|
|
|
static void tcpd_diag(int, const char *, const char *, va_list)
|
|
__sysloglike(3,0);
|
|
|
|
/* tcpd_diag - centralize error reporter */
|
|
|
|
static void
|
|
tcpd_diag(int severity, const char *tag, const char *fmt, va_list ap)
|
|
{
|
|
char *buf;
|
|
int oerrno;
|
|
|
|
/* save errno in case we need it */
|
|
oerrno = errno;
|
|
|
|
if (vasprintf(&buf, fmt, ap) == -1)
|
|
buf = __UNCONST(fmt);
|
|
|
|
errno = oerrno;
|
|
|
|
/* contruct the tag for the log entry */
|
|
if (tcpd_context.file)
|
|
syslog(severity, "%s: %s, line %d: %s",
|
|
tag, tcpd_context.file, tcpd_context.line, buf);
|
|
else
|
|
syslog(severity, "%s: %s", tag, buf);
|
|
|
|
if (buf != fmt)
|
|
free(buf);
|
|
}
|
|
|
|
/* tcpd_warn - report problem of some sort and proceed */
|
|
|
|
void
|
|
tcpd_warn(const char *format, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, format);
|
|
tcpd_diag(LOG_ERR, "warning", format, ap);
|
|
va_end(ap);
|
|
}
|
|
|
|
/* tcpd_jump - report serious problem and jump */
|
|
|
|
void
|
|
tcpd_jump(const char *format, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, format);
|
|
tcpd_diag(LOG_ERR, "error", format, ap);
|
|
va_end(ap);
|
|
longjmp(tcpd_buf, AC_ERROR);
|
|
}
|