source: openpam/trunk/lib/openpam_log.c @ 544

Last change on this file since 544 was 544, checked in by des, 3 years ago

Through oversight, the PAM_LOG_LIBDEBUG case was left out in the
version of openpam_log() that's actually used. Internal debugging
messages therefore went to the default case and were logged as errors,
spamming /var/log/messages and the console.

  • Property svn:keywords set to Id
File size: 4.4 KB
Line 
1/*-
2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
3 * Copyright (c) 2004-2011 Dag-Erling Smørgrav
4 * All rights reserved.
5 *
6 * This software was developed for the FreeBSD Project by ThinkSec AS and
7 * Network Associates Laboratories, the Security Research Division of
8 * Network Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
9 * ("CBOSS"), as part of the DARPA CHATS research program.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. The name of the author may not be used to endorse or promote
20 *    products derived from this software without specific prior written
21 *    permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * $Id$
36 */
37
38#ifdef HAVE_CONFIG_H
39# include "config.h"
40#endif
41
42#include <errno.h>
43#include <stdarg.h>
44#include <stdio.h>
45#include <stdlib.h>
46#include <syslog.h>
47
48#include <security/pam_appl.h>
49
50#include "openpam_impl.h"
51
52#ifdef OPENPAM_DEBUG
53int openpam_debug = 1;
54#else
55int openpam_debug = 0;
56#endif
57
58#if !defined(openpam_log)
59
60/*
61 * OpenPAM extension
62 *
63 * Log a message through syslog
64 */
65
66void
67openpam_log(int level, const char *fmt, ...)
68{
69        va_list ap;
70        int priority;
71
72        switch (level) {
73        case PAM_LOG_LIBDEBUG:
74        case PAM_LOG_DEBUG:
75                if (!openpam_debug)
76                        return;
77                priority = LOG_DEBUG;
78                break;
79        case PAM_LOG_VERBOSE:
80                priority = LOG_INFO;
81                break;
82        case PAM_LOG_NOTICE:
83                priority = LOG_NOTICE;
84                break;
85        case PAM_LOG_ERROR:
86        default:
87                priority = LOG_ERR;
88                break;
89        }
90        va_start(ap, fmt);
91        vsyslog(priority, fmt, ap);
92        va_end(ap);
93}
94
95#else
96
97void
98_openpam_log(int level, const char *func, const char *fmt, ...)
99{
100        va_list ap;
101        char *format;
102        int priority;
103        int serrno;
104
105        switch (level) {
106        case PAM_LOG_LIBDEBUG:
107        case PAM_LOG_DEBUG:
108                if (!openpam_debug)
109                        return;
110                priority = LOG_DEBUG;
111                break;
112        case PAM_LOG_VERBOSE:
113                priority = LOG_INFO;
114                break;
115        case PAM_LOG_NOTICE:
116                priority = LOG_NOTICE;
117                break;
118        case PAM_LOG_ERROR:
119        default:
120                priority = LOG_ERR;
121                break;
122        }
123        va_start(ap, fmt);
124        serrno = errno;
125        if (asprintf(&format, "in %s(): %s", func, fmt) > 0) {
126                errno = serrno;
127                vsyslog(priority, format, ap);
128                FREE(format);
129        } else {
130                errno = serrno;
131                vsyslog(priority, fmt, ap);
132        }
133        va_end(ap);
134}
135
136#endif
137
138/**
139 * The =openpam_log function logs messages using =syslog.
140 * It is primarily intended for internal use by the library and modules.
141 *
142 * The =level argument indicates the importance of the message.
143 * The following levels are defined:
144 *
145 *      =PAM_LOG_LIBDEBUG:
146 *              Debugging messages.
147 *              For internal use only.
148 *      =PAM_LOG_DEBUG:
149 *              Debugging messages.
150 *              These messages are normally not logged unless the global
151 *              integer variable :openpam_debug is set to a non-zero
152 *              value, in which case they are logged with a =syslog
153 *              priority of =LOG_DEBUG.
154 *      =PAM_LOG_VERBOSE:
155 *              Information about the progress of the authentication
156 *              process, or other non-essential messages.
157 *              These messages are logged with a =syslog priority of
158 *              =LOG_INFO.
159 *      =PAM_LOG_NOTICE:
160 *              Messages relating to non-fatal errors.
161 *              These messages are logged with a =syslog priority of
162 *              =LOG_NOTICE.
163 *      =PAM_LOG_ERROR:
164 *              Messages relating to serious errors.
165 *              These messages are logged with a =syslog priority of
166 *              =LOG_ERR.
167 *
168 * The remaining arguments are a =printf format string and the
169 * corresponding arguments.
170 */
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