openpam_log.c revision 115619
1/*- 2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc. 3 * All rights reserved. 4 * 5 * This software was developed for the FreeBSD Project by ThinkSec AS and 6 * Network Associates Laboratories, the Security Research Division of 7 * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 8 * ("CBOSS"), as part of the DARPA CHATS research program. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. The name of the author may not be used to endorse or promote 19 * products derived from this software without specific prior written 20 * permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $P4: //depot/projects/openpam/lib/openpam_log.c#23 $ 35 */ 36 37#include <ctype.h> 38#include <stdarg.h> 39#include <stdio.h> 40#include <stdlib.h> 41#include <string.h> 42#include <syslog.h> 43 44#include <security/pam_appl.h> 45 46#include "openpam_impl.h" 47 48int _openpam_debug = 0; 49 50#if !defined(openpam_log) 51 52/* 53 * OpenPAM extension 54 * 55 * Log a message through syslog 56 */ 57 58void 59openpam_log(int level, const char *fmt, ...) 60{ 61 va_list ap; 62 int priority; 63 64 switch (level) { 65 case PAM_LOG_DEBUG: 66 if (!_openpam_debug) 67 return; 68 priority = LOG_DEBUG; 69 break; 70 case PAM_LOG_VERBOSE: 71 priority = LOG_INFO; 72 break; 73 case PAM_LOG_NOTICE: 74 priority = LOG_NOTICE; 75 break; 76 case PAM_LOG_ERROR: 77 default: 78 priority = LOG_ERR; 79 break; 80 } 81 va_start(ap, fmt); 82 vsyslog(priority, fmt, ap); 83 va_end(ap); 84} 85 86#else 87 88void 89_openpam_log(int level, const char *func, const char *fmt, ...) 90{ 91 va_list ap; 92 char *format; 93 int priority; 94 95 switch (level) { 96 case PAM_LOG_DEBUG: 97 if (!_openpam_debug) 98 return; 99 priority = LOG_DEBUG; 100 break; 101 case PAM_LOG_VERBOSE: 102 priority = LOG_INFO; 103 break; 104 case PAM_LOG_NOTICE: 105 priority = LOG_NOTICE; 106 break; 107 case PAM_LOG_ERROR: 108 default: 109 priority = LOG_ERR; 110 break; 111 } 112 va_start(ap, fmt); 113 if (asprintf(&format, "in %s(): %s", func, fmt) > 0) { 114 vsyslog(priority, format, ap); 115 FREE(format); 116 } else { 117 vsyslog(priority, fmt, ap); 118 } 119 va_end(ap); 120} 121 122#endif 123 124/** 125 * The =openpam_log function logs messages using =syslog. It is primarily 126 * intended for internal use by the library and modules. 127 * 128 * The =level argument indicates the importance of the message. The 129 * following levels are defined: 130 * 131 * =PAM_LOG_DEBUG: 132 * Debugging messages. These messages are normally not 133 * logged unless the global integer variable :_openpam_debug 134 * is set to a non-zero value, in which case they are logged 135 * with a =syslog priority of =LOG_DEBUG. 136 * =PAM_LOG_VERBOSE: 137 * Information about the progress of the authentication 138 * process, or other non-essential messages. These messages 139 * are logged with a =syslog priority of =LOG_INFO. 140 * =PAM_LOG_NOTICE: 141 * Messages relating to non-fatal errors. These messages are 142 * logged with a =syslog priority of =LOG_NOTICE. 143 * =PAM_LOG_ERROR: 144 * Messages relating to serious errors. These messages are 145 * logged with a =syslog priority of =LOG_ERR. 146 * 147 * The remaining arguments are a =printf format string and the 148 * corresponding arguments. 149 */ 150