191094Sdes/*- 2115619Sdes * Copyright (c) 2002-2003 Networks Associates Technology, Inc. 3228690Sdes * Copyright (c) 2004-2011 Dag-Erling Sm��rgrav 491094Sdes * All rights reserved. 591094Sdes * 691094Sdes * This software was developed for the FreeBSD Project by ThinkSec AS and 799158Sdes * Network Associates Laboratories, the Security Research Division of 899158Sdes * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 999158Sdes * ("CBOSS"), as part of the DARPA CHATS research program. 1091094Sdes * 1191094Sdes * Redistribution and use in source and binary forms, with or without 1291094Sdes * modification, are permitted provided that the following conditions 1391094Sdes * are met: 1491094Sdes * 1. Redistributions of source code must retain the above copyright 1591094Sdes * notice, this list of conditions and the following disclaimer. 1691094Sdes * 2. Redistributions in binary form must reproduce the above copyright 1791094Sdes * notice, this list of conditions and the following disclaimer in the 1891094Sdes * documentation and/or other materials provided with the distribution. 1991094Sdes * 3. The name of the author may not be used to endorse or promote 2091094Sdes * products derived from this software without specific prior written 2191094Sdes * permission. 2291094Sdes * 2391094Sdes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 2491094Sdes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2591094Sdes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2691094Sdes * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2791094Sdes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2891094Sdes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2991094Sdes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3091094Sdes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3191094Sdes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3291094Sdes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3391094Sdes * SUCH DAMAGE. 3491094Sdes * 35348980Sdes * $OpenPAM: openpam_log.c 938 2017-04-30 21:34:42Z des $ 3691094Sdes */ 3791094Sdes 38228690Sdes#ifdef HAVE_CONFIG_H 39228690Sdes# include "config.h" 40228690Sdes#endif 41228690Sdes 42236099Sdes#include <errno.h> 4391094Sdes#include <stdarg.h> 4491094Sdes#include <stdio.h> 4591094Sdes#include <stdlib.h> 4691094Sdes#include <syslog.h> 4791094Sdes 4891094Sdes#include <security/pam_appl.h> 4991094Sdes 5091094Sdes#include "openpam_impl.h" 51255376Sdes#include "openpam_asprintf.h" 5291094Sdes 53228690Sdesint openpam_debug = 0; 54114536Sdes 55115619Sdes#if !defined(openpam_log) 5691094Sdes 5791094Sdes/* 5891100Sdes * OpenPAM extension 5991100Sdes * 60115619Sdes * Log a message through syslog 6191094Sdes */ 6291094Sdes 6391094Sdesvoid 64115619Sdesopenpam_log(int level, const char *fmt, ...) 6591094Sdes{ 6691094Sdes va_list ap; 67115619Sdes int priority; 68255376Sdes int serrno; 6991094Sdes 7091094Sdes switch (level) { 71236099Sdes case PAM_LOG_LIBDEBUG: 7291094Sdes case PAM_LOG_DEBUG: 73228690Sdes if (!openpam_debug) 74114536Sdes return; 7591094Sdes priority = LOG_DEBUG; 7691094Sdes break; 7791094Sdes case PAM_LOG_VERBOSE: 7891094Sdes priority = LOG_INFO; 7991094Sdes break; 8091094Sdes case PAM_LOG_NOTICE: 8191094Sdes priority = LOG_NOTICE; 8291094Sdes break; 8391094Sdes case PAM_LOG_ERROR: 84107579Sdes default: 8591094Sdes priority = LOG_ERR; 8691094Sdes break; 8791094Sdes } 88255376Sdes serrno = errno; 8991094Sdes va_start(ap, fmt); 90115619Sdes vsyslog(priority, fmt, ap); 9191094Sdes va_end(ap); 92255376Sdes errno = serrno; 9391094Sdes} 9491094Sdes 9591094Sdes#else 9691094Sdes 9791094Sdesvoid 98115619Sdes_openpam_log(int level, const char *func, const char *fmt, ...) 9991094Sdes{ 10091094Sdes va_list ap; 101115619Sdes char *format; 10291094Sdes int priority; 103236099Sdes int serrno; 10491094Sdes 10591094Sdes switch (level) { 106236099Sdes case PAM_LOG_LIBDEBUG: 10791094Sdes case PAM_LOG_DEBUG: 108228690Sdes if (!openpam_debug) 109114536Sdes return; 11091094Sdes priority = LOG_DEBUG; 11191094Sdes break; 11291094Sdes case PAM_LOG_VERBOSE: 11391094Sdes priority = LOG_INFO; 11491094Sdes break; 11591094Sdes case PAM_LOG_NOTICE: 11691094Sdes priority = LOG_NOTICE; 11791094Sdes break; 11891094Sdes case PAM_LOG_ERROR: 119107579Sdes default: 12091094Sdes priority = LOG_ERR; 12191094Sdes break; 12291094Sdes } 123255376Sdes serrno = errno; 12491094Sdes va_start(ap, fmt); 125115619Sdes if (asprintf(&format, "in %s(): %s", func, fmt) > 0) { 126236099Sdes errno = serrno; 127115619Sdes vsyslog(priority, format, ap); 128115619Sdes FREE(format); 129115619Sdes } else { 130236099Sdes errno = serrno; 131115619Sdes vsyslog(priority, fmt, ap); 132115619Sdes } 13391094Sdes va_end(ap); 134255376Sdes errno = serrno; 13591094Sdes} 13691094Sdes 13791094Sdes#endif 13891100Sdes 139115619Sdes/** 140141098Sdes * The =openpam_log function logs messages using =syslog. 141141098Sdes * It is primarily intended for internal use by the library and modules. 142115619Sdes * 143141098Sdes * The =level argument indicates the importance of the message. 144141098Sdes * The following levels are defined: 145115619Sdes * 146236099Sdes * =PAM_LOG_LIBDEBUG: 147236099Sdes * Debugging messages. 148236099Sdes * For internal use only. 149115619Sdes * =PAM_LOG_DEBUG: 150141098Sdes * Debugging messages. 151141098Sdes * These messages are normally not logged unless the global 152228690Sdes * integer variable :openpam_debug is set to a non-zero 153141098Sdes * value, in which case they are logged with a =syslog 154141098Sdes * priority of =LOG_DEBUG. 155115619Sdes * =PAM_LOG_VERBOSE: 156115619Sdes * Information about the progress of the authentication 157141098Sdes * process, or other non-essential messages. 158141098Sdes * These messages are logged with a =syslog priority of 159141098Sdes * =LOG_INFO. 160115619Sdes * =PAM_LOG_NOTICE: 161141098Sdes * Messages relating to non-fatal errors. 162141098Sdes * These messages are logged with a =syslog priority of 163141098Sdes * =LOG_NOTICE. 164115619Sdes * =PAM_LOG_ERROR: 165141098Sdes * Messages relating to serious errors. 166141098Sdes * These messages are logged with a =syslog priority of 167141098Sdes * =LOG_ERR. 168115619Sdes * 169115619Sdes * The remaining arguments are a =printf format string and the 170115619Sdes * corresponding arguments. 171255376Sdes * 172255376Sdes * The =openpam_log function does not modify the value of :errno. 17391100Sdes */ 174