1 /* $OpenBSD: log.c,v 1.7 2016/08/27 04:21:08 guenther Exp $ */ 2 3 /* 4 * Copyright (c) 2005 H�kan Olsson. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * This code was written under funding by Multicom Security AB. 30 */ 31 32 #include <sys/types.h> 33 #include <sys/select.h> 34 #include <stdio.h> 35 #include <string.h> 36 #include <stdarg.h> 37 #include <stdlib.h> 38 #include <syslog.h> 39 #include <errno.h> 40 #include <time.h> 41 42 #include "sasyncd.h" 43 44 static char logbuf[2048]; 45 46 void 47 log_init(char *pname) 48 { 49 tzset(); 50 openlog(pname, LOG_CONS | LOG_PID, LOG_DAEMON); 51 } 52 53 static void 54 log_output(char *msg) 55 { 56 if (cfgstate.debug) 57 fprintf(stderr, "%s\n", msg); 58 else 59 syslog(LOG_CRIT, "%s", msg); 60 } 61 62 void 63 log_err(const char *fmt, ...) 64 { 65 extern char *__progname; 66 int off = 0; 67 va_list ap; 68 69 if (cfgstate.debug) { 70 snprintf(logbuf, sizeof logbuf, "%s: ", __progname); 71 off = strlen(logbuf); 72 } 73 74 va_start(ap, fmt); 75 (void)vsnprintf(logbuf + off, sizeof logbuf - off, fmt, ap); 76 va_end(ap); 77 78 strlcat(logbuf, ": ", sizeof logbuf); 79 strlcat(logbuf, strerror(errno), sizeof logbuf); 80 81 log_output(logbuf); 82 return; 83 } 84 85 void 86 log_msg(int minlevel, const char *fmt, ...) 87 { 88 va_list ap; 89 90 if (cfgstate.verboselevel < minlevel) 91 return; 92 93 va_start(ap, fmt); 94 (void)vsnprintf(logbuf, sizeof logbuf, fmt, ap); 95 va_end(ap); 96 97 log_output(logbuf); 98 return; 99 } 100