openpam_log.c revision 114536 
1/*-
2 * Copyright (c) 2002 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#18 $
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(3)
56 */
57
58void
59_openpam_log(int level, const char *func, const char *fmt, ...)
60{
61	va_list ap;
62	char *format;
63	int len, priority;
64
65	switch (level) {
66	case PAM_LOG_DEBUG:
67		if (!_openpam_debug)
68			return;
69		priority = LOG_DEBUG;
70		break;
71	case PAM_LOG_VERBOSE:
72		priority = LOG_INFO;
73		break;
74	case PAM_LOG_NOTICE:
75		priority = LOG_NOTICE;
76		break;
77	case PAM_LOG_ERROR:
78	default:
79		priority = LOG_ERR;
80		break;
81	}
82	va_start(ap, fmt);
83	for (len = strlen(fmt); len > 0 && isspace(fmt[len]); len--)
84		/* nothing */;
85	if ((format = malloc(strlen(func) + len + 16)) != NULL) {
86		sprintf(format, "in %s(): %.*s\n", func, len, fmt);
87		vsyslog(priority, format, ap);
88		free(format);
89	} else {
90		vsyslog(priority, fmt, ap);
91	}
92	va_end(ap);
93}
94
95#else
96
97/*
98 * If openpam_log isn't defined as a macro, we're on a platform that
99 * doesn't support varadic macros (or it does but we aren't aware of
100 * it).  Do the next best thing.
101 */
102
103void
104openpam_log(int level, const char *fmt, ...)
105{
106	va_list ap;
107	int priority;
108
109	switch (level) {
110	case PAM_LOG_DEBUG:
111		if (!_openpam_debug)
112			return;
113		priority = LOG_DEBUG;
114		break;
115	case PAM_LOG_VERBOSE:
116		priority = LOG_INFO;
117		break;
118	case PAM_LOG_NOTICE:
119		priority = LOG_NOTICE;
120		break;
121	case PAM_LOG_ERROR:
122	default:
123		priority = LOG_ERR;
124		break;
125	}
126	va_start(ap, fmt);
127	vsyslog(priority, fmt, ap);
128	va_end(ap);
129}
130
131#endif
132
133/*
134 * NOLIST
135 */
136