| /* |
| * dhcpcd - DHCP client daemon |
| * Copyright 2006-2008 Roy Marples <roy@marples.name> |
| * 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE AUTHOR 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. |
| */ |
| |
| #include <ctype.h> |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <syslog.h> |
| |
| #include "common.h" |
| #include "logger.h" |
| |
| static int loglevel = LOG_INFO; |
| static char logprefix[12] = {0}; |
| |
| void |
| setloglevel(int level) |
| { |
| loglevel = level; |
| } |
| |
| void |
| setlogprefix(const char *prefix) |
| { |
| strlcpy(logprefix, prefix, sizeof(logprefix)); |
| } |
| |
| void |
| logger(int level, const char *fmt, ...) |
| { |
| va_list p, p2; |
| FILE *f = stderr; |
| size_t len, fmt2len; |
| char *fmt2, *pf; |
| |
| va_start(p, fmt); |
| va_copy(p2, p); |
| |
| if (level <= LOG_ERR || level <= loglevel) { |
| fprintf(f, "%s", logprefix); |
| vfprintf(f, fmt, p); |
| fputc('\n', f); |
| } |
| |
| if (level < LOG_DEBUG || level <= loglevel) { |
| len = strlen(logprefix); |
| fmt2len = strlen(fmt) + len + 1; |
| fmt2 = pf = malloc(sizeof(char) * fmt2len); |
| if (fmt2) { |
| strlcpy(pf, logprefix, fmt2len); |
| pf += len; |
| strlcpy(pf, fmt, fmt2len - len); |
| vsyslog(level, fmt2, p2); |
| free(fmt2); |
| } else { |
| vsyslog(level, fmt, p2); |
| syslog(LOG_ERR, "logger: memory exhausted"); |
| exit(EXIT_FAILURE); |
| } |
| } |
| |
| va_end(p2); |
| va_end(p); |
| } |