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235 lines
5.2 KiB
C
235 lines
5.2 KiB
C
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/* $OpenBSD: errwarn.c,v 1.7 2004/05/04 22:23:01 mickey Exp $ */
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/* Errors and warnings... */
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/*
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* Copyright (c) 1996 The Internet Software Consortium.
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* All Rights Reserved.
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* Copyright (c) 1995 RadioMail Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of RadioMail Corporation, the Internet Software
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* Consortium nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY RADIOMAIL CORPORATION, THE INTERNET
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* SOFTWARE CONSORTIUM AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL RADIOMAIL CORPORATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software was written for RadioMail Corporation by Ted Lemon
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* under a contract with Vixie Enterprises. Further modifications have
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* been made for the Internet Software Consortium under a contract
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* with Vixie Laboratories.
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*/
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#include <errno.h>
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#include "dhcpd.h"
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static void do_percentm(char *obuf, size_t size, char *ibuf);
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static char mbuf[1024];
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static char fbuf[1024];
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int warnings_occurred;
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/*
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* Log an error message, then exit.
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*/
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void
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error(char *fmt, ...)
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{
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va_list list;
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do_percentm(fbuf, sizeof(fbuf), fmt);
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va_start(list, fmt);
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vsnprintf(mbuf, sizeof(mbuf), fbuf, list);
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va_end(list);
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#ifndef DEBUG
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syslog(log_priority | LOG_ERR, "%s", mbuf);
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#endif
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/* Also log it to stderr? */
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if (log_perror) {
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write(2, mbuf, strlen(mbuf));
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write(2, "\n", 1);
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}
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syslog(LOG_CRIT, "exiting.");
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if (log_perror) {
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fprintf(stderr, "exiting.\n");
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fflush(stderr);
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}
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exit(1);
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}
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/*
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* Log a warning message...
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*/
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int
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warning(char *fmt, ...)
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{
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va_list list;
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do_percentm(fbuf, sizeof(fbuf), fmt);
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va_start(list, fmt);
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vsnprintf(mbuf, sizeof(mbuf), fbuf, list);
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va_end(list);
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#ifndef DEBUG
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syslog(log_priority | LOG_ERR, "%s", mbuf);
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#endif
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if (log_perror) {
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write(2, mbuf, strlen(mbuf));
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write(2, "\n", 1);
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}
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return (0);
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}
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/*
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* Log a note...
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*/
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int
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note(char *fmt, ...)
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{
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va_list list;
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do_percentm(fbuf, sizeof(fbuf), fmt);
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va_start(list, fmt);
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vsnprintf(mbuf, sizeof(mbuf), fbuf, list);
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va_end(list);
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#ifndef DEBUG
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syslog(log_priority | LOG_INFO, "%s", mbuf);
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#endif
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if (log_perror) {
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write(2, mbuf, strlen(mbuf));
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write(2, "\n", 1);
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}
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return (0);
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}
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/*
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* Log a debug message...
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*/
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int
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debug(char *fmt, ...)
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{
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va_list list;
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do_percentm(fbuf, sizeof(fbuf), fmt);
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va_start(list, fmt);
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vsnprintf(mbuf, sizeof(mbuf), fbuf, list);
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va_end(list);
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#ifndef DEBUG
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syslog(log_priority | LOG_DEBUG, "%s", mbuf);
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#endif
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if (log_perror) {
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write(2, mbuf, strlen(mbuf));
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write(2, "\n", 1);
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}
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return (0);
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}
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/*
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* Find %m in the input string and substitute an error message string.
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*/
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static void
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do_percentm(char *obuf, size_t size, char *ibuf)
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{
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char ch;
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char *s = ibuf;
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char *t = obuf;
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size_t prlen;
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size_t fmt_left;
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int saved_errno = errno;
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/*
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* We wouldn't need this mess if printf handled %m, or if
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* strerror() had been invented before syslog().
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*/
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for (fmt_left = size; (ch = *s); ++s) {
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if (ch == '%' && s[1] == 'm') {
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++s;
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prlen = snprintf(t, fmt_left, "%s",
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strerror(saved_errno));
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if (prlen >= fmt_left)
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prlen = fmt_left - 1;
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t += prlen;
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fmt_left -= prlen;
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} else {
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if (fmt_left > 1) {
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*t++ = ch;
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fmt_left--;
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}
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}
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}
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*t = '\0';
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}
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int
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parse_warn(char *fmt, ...)
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{
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va_list list;
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static char spaces[] =
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" "
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" "; /* 80 spaces */
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do_percentm(mbuf, sizeof(mbuf), fmt);
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snprintf(fbuf, sizeof(fbuf), "%s line %d: %s", tlname, lexline, mbuf);
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va_start(list, fmt);
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vsnprintf(mbuf, sizeof(mbuf), fbuf, list);
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va_end(list);
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#ifndef DEBUG
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syslog(log_priority | LOG_ERR, "%s", mbuf);
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syslog(log_priority | LOG_ERR, "%s", token_line);
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if (lexline < 81)
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syslog(log_priority | LOG_ERR,
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"%s^", &spaces[sizeof(spaces) - lexchar]);
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#endif
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if (log_perror) {
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write(2, mbuf, strlen(mbuf));
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write(2, "\n", 1);
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write(2, token_line, strlen(token_line));
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write(2, "\n", 1);
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write(2, spaces, lexchar - 1);
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write(2, "^\n", 2);
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}
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warnings_occurred = 1;
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return (0);
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}
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