openpam_log.c revision 91684 
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 * $P4: //depot/projects/openpam/lib/openpam_log.c#9 $
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 * OpenPAM extension
51 *
52 * Log a message through syslog(3)
53 */
54
55void
56_openpam_log(int level, const char *func, const char *fmt, ...)
57{
58	va_list ap;
59	char *format;
60	int len, priority;
61
62	switch (level) {
63	case PAM_LOG_DEBUG:
64		priority = LOG_DEBUG;
65		break;
66	case PAM_LOG_VERBOSE:
67		priority = LOG_INFO;
68		break;
69	case PAM_LOG_NOTICE:
70		priority = LOG_NOTICE;
71		break;
72	case PAM_LOG_ERROR:
73		priority = LOG_ERR;
74		break;
75	}
76	va_start(ap, fmt);
77	for (len = strlen(fmt); len > 0 && isspace(fmt[len]); len--)
78		/* nothing */;
79	if ((format = malloc(strlen(func) + len + 16)) != NULL) {
80		sprintf(format, "in %s(): %.*s\n", func, len, fmt);
81		vsyslog(priority, format, ap);
82#ifdef DEBUG
83		vfprintf(stderr, format, ap);
84#endif
85		free(format);
86	} else {
87		vsyslog(priority, fmt, ap);
88	}
89	va_end(ap);
90}
91
92#else
93
94/*
95 * If openpam_log isn't defined as a macro, we're on a platform that
96 * doesn't support varadic macros (or it does but we aren't aware of
97 * it).  Do the next best thing.
98 */
99
100void
101openpam_log(int level, const char *fmt, ...)
102{
103	va_list ap;
104	int priority;
105
106	switch (level) {
107	case PAM_LOG_DEBUG:
108		priority = LOG_DEBUG;
109		break;
110	case PAM_LOG_VERBOSE:
111		priority = LOG_INFO;
112		break;
113	case PAM_LOG_NOTICE:
114		priority = LOG_NOTICE;
115		break;
116	case PAM_LOG_ERROR:
117		priority = LOG_ERR;
118		break;
119	}
120	va_start(ap, fmt);
121	vsyslog(priority, fmt, ap);
122	va_end(ap);
123}
124
125#endif
126
127/*
128 * NOLIST
129 */
130