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/* $OpenBSD: diag.c,v 1.5 2009/10/27 23:59:30 deraadt 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.
*/
/* System libraries */
#include <syslog.h>
#include <stdio.h>
#include <stdarg.h>
#include <setjmp.h>
/* Local stuff */
#include "tcpd.h"
struct tcpd_context tcpd_context;
jmp_buf tcpd_buf;
static void tcpd_diag(int, char *, char *, va_list)
__attribute__((__format__(__printf__, 3, 0)));
/* tcpd_diag - centralize error reporter */
static void tcpd_diag(severity, tag, format, ap)
int severity;
char *tag;
char *format;
va_list ap;
{
char fmt[BUFSIZ];
if (tcpd_context.file)
snprintf(fmt, sizeof fmt, "%s: %s, line %d: %s",
tag, tcpd_context.file, tcpd_context.line, format);
else
snprintf(fmt, sizeof fmt, "%s: %s", tag, format);
vsyslog(severity, fmt, ap);
}
/* tcpd_warn - report problem of some sort and proceed */
void tcpd_warn(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(char *format, ...)
{
va_list ap;
va_start(ap, format);
tcpd_diag(LOG_ERR, "error", format, ap);
va_end(ap);
longjmp(tcpd_buf, AC_ERROR);
}
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