source: openpam/trunk/lib/openpam_log.c @ 62

Last change on this file since 62 was 52, checked in by Dag-Erling Smørgrav, 19 years ago

Oops, previous commit would cause sprintf() to overrun the malloc()ed
buffer by exactly one character. Add some slack.

Sponsored by: DARPA, NAI Labs

  • Property svn:keywords set to Id LastChangedRevision HeadURL LastChangedDate LastChangedBy
File size: 3.3 KB
Line 
1/*-
2 * Copyright (c) 2002 Networks Associates Technologies, Inc.
3 * All rights reserved.
4 *
5 * This software was developed for the FreeBSD Project by ThinkSec AS and
6 * NAI Labs, the Security Research Division of Network Associates, Inc.
7 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
8 * 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 * $Id: openpam_log.c 52 2002-02-13 00:41:06Z des $
35 */
36
37#include <ctype.h>
38#include <stdarg.h>
39#include <stdio.h>
40#include <stdlib.h>
41#include <syslog.h>
42
43#include <security/pam_appl.h>
44
45#include "openpam_impl.h"
46
47#if defined(openpam_log)
48
49/*
50 * Log a message through syslog(3)
51 */
52
53void
54_openpam_log(int level, const char *func, const char *fmt, ...)
55{
56        va_list ap;
57        char *format;
58        int len, priority;
59
60        switch (level) {
61        case PAM_LOG_DEBUG:
62                priority = LOG_DEBUG;
63                break;
64        case PAM_LOG_VERBOSE:
65                priority = LOG_INFO;
66                break;
67        case PAM_LOG_NOTICE:
68                priority = LOG_NOTICE;
69                break;
70        case PAM_LOG_ERROR:
71                priority = LOG_ERR;
72                break;
73        }
74        va_start(ap, fmt);
75        for (len = strlen(fmt); len > 0 && isspace(fmt[len]); len--)
76                /* nothing */;
77        if ((format = malloc(strlen(func) + len + 16)) != NULL) {
78                sprintf(format, "in %s(): %.*s\n", func, len, fmt);
79                vsyslog(priority, format, ap);
80#ifdef DEBUG
81                vfprintf(stderr, format, ap);
82#endif
83                free(format);
84        } else {
85                vsyslog(priority, fmt, ap);
86        }
87        va_end(ap);
88}
89
90#else
91
92/*
93 * If openpam_log isn't defined as a macro, we're on a platform that
94 * doesn't support varadic macros (or it does but we aren't aware of
95 * it).  Do the next best thing.
96 */
97
98void
99openpam_log(int level, const char *fmt, ...)
100{
101        va_list ap;
102        int priority;
103
104        switch (level) {
105        case PAM_LOG_DEBUG:
106                priority = LOG_DEBUG;
107                break;
108        case PAM_LOG_VERBOSE:
109                priority = LOG_INFO;
110                break;
111        case PAM_LOG_NOTICE:
112                priority = LOG_NOTICE;
113                break;
114        case PAM_LOG_ERROR:
115                priority = LOG_ERR;
116                break;
117        }
118        va_start(ap, fmt);
119        vsyslog(priority, fmt, ap);
120        va_end(ap);
121}
122
123#endif
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