143 lines
3.5 KiB
C
143 lines
3.5 KiB
C
/*
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* The IKE Scanner (ike-scan) is Copyright (C) 2003-2007 Roy Hills,
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* NTA Monitor Ltd.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library, and distribute linked combinations including the two.
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*
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version.
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*
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* If this license is unacceptable to you, I may be willing to negotiate
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* alternative licenses (contact ike-scan@nta-monitor.com).
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*
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* You are encouraged to send comments, improvements or suggestions to
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* me at ike-scan@nta-monitor.com.
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*
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* $Id: error.c 9884 2007-01-14 19:05:39Z rsh $
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*
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* error.c -- error routines for IKE Scanner (ike-scan)
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*
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* Author: Roy Hills
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* Date: 1 December 2001
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*
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*/
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#include "ike-scan.h"
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static char rcsid[] = "$Id: error.c 9884 2007-01-14 19:05:39Z rsh $"; /* RCS ID for ident(1) */
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int daemon_proc; /* Non-zero if process is a daemon */
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/*
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* Function to handle fatal system call errors.
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*/
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void
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err_sys(const char *fmt,...) {
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va_list ap;
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va_start(ap, fmt);
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err_print(1, 0, fmt, ap);
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va_end(ap);
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exit(EXIT_FAILURE);
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}
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/*
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* Function to handle non-fatal system call errors.
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*/
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void
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warn_sys(const char *fmt,...) {
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va_list ap;
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va_start(ap, fmt);
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err_print(1, 0, fmt, ap);
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va_end(ap);
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}
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/*
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* Function to handle fatal errors not from system calls.
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*/
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void
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err_msg(const char *fmt,...) {
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va_list ap;
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va_start(ap, fmt);
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err_print(0, 0, fmt, ap);
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va_end(ap);
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exit(EXIT_FAILURE);
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}
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/*
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* Function to handle non-fatal errors not from system calls.
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*/
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void
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warn_msg(const char *fmt,...) {
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va_list ap;
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va_start(ap, fmt);
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err_print(0, 0, fmt, ap);
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va_end(ap);
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}
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/*
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* Function to handle informational syslog messages
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*/
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void
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info_syslog(const char *fmt,...) {
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va_list ap;
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va_start(ap, fmt);
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err_print(0, LOG_INFO, fmt, ap);
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va_end(ap);
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}
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/*
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* General error printing function used by all the above
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* functions.
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*/
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void
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err_print (int errnoflag, int level, const char *fmt, va_list ap) {
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int errno_save;
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size_t n;
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char buf[MAXLINE];
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errno_save=errno;
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vsnprintf(buf, MAXLINE, fmt, ap);
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n=strlen(buf);
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if (errnoflag)
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snprintf(buf+n, MAXLINE-n, ": %s", strerror(errno_save));
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strcat(buf, "\n");
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if (level != 0) {
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syslog(level, "%s", buf);
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} else {
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fflush(stdout); /* In case stdout and stderr are the same */
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fputs(buf, stderr);
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fflush(stderr);
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}
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}
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void
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error_use_rcsid(void) {
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fprintf(stderr, "%s\n", rcsid); /* Use rcsid to stop compiler optimising away */
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}
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