/* $OpenBSD: errwarn.c,v 1.15 2007/03/02 11:31:17 henning Exp $ */ /* Errors and warnings... */ /* * Copyright (c) 1996 The Internet Software Consortium. * All Rights Reserved. * Copyright (c) 1995 RadioMail Corporation. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of RadioMail Corporation, the Internet Software * Consortium nor the names of its contributors may be used to endorse * or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY RADIOMAIL CORPORATION, THE INTERNET * SOFTWARE CONSORTIUM AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL RADIOMAIL CORPORATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * * This software was written for RadioMail Corporation by Ted Lemon * under a contract with Vixie Enterprises. Further modifications have * been made for the Internet Software Consortium under a contract * with Vixie Laboratories. */ #include #include #include #include #include "dhcpd.h" static void do_percentm(char *obuf, size_t size, char *ibuf); static char mbuf[1024]; static char fbuf[1024]; int warnings_occurred; /* * Log an error message, then exit. */ void error(char *fmt, ...) { va_list list; do_percentm(fbuf, sizeof(fbuf), fmt); va_start(list, fmt); vsnprintf(mbuf, sizeof(mbuf), fbuf, list); va_end(list); #ifndef DEBUG syslog(LOG_ERR, "%s", mbuf); #endif /* Also log it to stderr? */ if (log_perror) { write(STDERR_FILENO, mbuf, strlen(mbuf)); write(STDERR_FILENO, "\n", 1); } syslog(LOG_CRIT, "exiting."); if (log_perror) { fprintf(stderr, "exiting.\n"); fflush(stderr); } exit(1); } /* * Log a warning message... */ int warning(char *fmt, ...) { va_list list; do_percentm(fbuf, sizeof(fbuf), fmt); va_start(list, fmt); vsnprintf(mbuf, sizeof(mbuf), fbuf, list); va_end(list); #ifndef DEBUG syslog(LOG_ERR, "%s", mbuf); #endif if (log_perror) { write(STDERR_FILENO, mbuf, strlen(mbuf)); write(STDERR_FILENO, "\n", 1); } return (0); } /* * Log a note... */ int note(char *fmt, ...) { va_list list; do_percentm(fbuf, sizeof(fbuf), fmt); va_start(list, fmt); vsnprintf(mbuf, sizeof(mbuf), fbuf, list); va_end(list); #ifndef DEBUG syslog(LOG_INFO, "%s", mbuf); #endif if (log_perror) { write(STDERR_FILENO, mbuf, strlen(mbuf)); write(STDERR_FILENO, "\n", 1); } return (0); } /* * Log a debug message... */ int debug(char *fmt, ...) { va_list list; do_percentm(fbuf, sizeof(fbuf), fmt); va_start(list, fmt); vsnprintf(mbuf, sizeof(mbuf), fbuf, list); va_end(list); #ifndef DEBUG syslog(LOG_DEBUG, "%s", mbuf); #endif if (log_perror) { write(STDERR_FILENO, mbuf, strlen(mbuf)); write(STDERR_FILENO, "\n", 1); } return (0); } /* * Find %m in the input string and substitute an error message string. */ static void do_percentm(char *obuf, size_t size, char *ibuf) { char ch; char *s = ibuf; char *t = obuf; int prlen; size_t fmt_left; int saved_errno = errno; /* * We wouldn't need this mess if printf handled %m, or if * strerror() had been invented before syslog(). */ for (fmt_left = size; (ch = *s); ++s) { if (ch == '%' && s[1] == 'm') { ++s; prlen = snprintf(t, fmt_left, "%s", strerror(saved_errno)); if (prlen == -1) prlen = 0; else if (prlen >= fmt_left) prlen = fmt_left - 1; t += prlen; fmt_left -= prlen; } else { if (fmt_left > 1) { *t++ = ch; fmt_left--; } } } *t = '\0'; } int parse_warn(char *fmt, ...) { va_list list; static char spaces[] = " " " "; /* 80 spaces */ struct iovec iov[6]; size_t iovcnt; do_percentm(mbuf, sizeof(mbuf), fmt); snprintf(fbuf, sizeof(fbuf), "%s line %d: %s", tlname, lexline, mbuf); va_start(list, fmt); vsnprintf(mbuf, sizeof(mbuf), fbuf, list); va_end(list); #ifndef DEBUG syslog(LOG_ERR, "%s", mbuf); syslog(LOG_ERR, "%s", token_line); if (lexchar < 81) syslog(LOG_ERR, "%*c", lexchar, '^'); #endif if (log_perror) { iov[0].iov_base = mbuf; iov[0].iov_len = strlen(mbuf); iov[1].iov_base = "\n"; iov[1].iov_len = 1; iov[2].iov_base = token_line; iov[2].iov_len = strlen(token_line); iov[3].iov_base = "\n"; iov[3].iov_len = 1; iovcnt = 4; if (lexchar < 81) { iov[4].iov_base = spaces; iov[4].iov_len = lexchar - 1; iov[5].iov_base = "^\n"; iov[5].iov_len = 2; iovcnt += 2; } writev(STDERR_FILENO, iov, iovcnt); } warnings_occurred = 1; return (0); }