openpam_log.c revision 99158 
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#15 $
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
48#if defined(openpam_log)
49
50/*
51 * OpenPAM extension
52 *
53 * Log a message through syslog(3)
54 */
55
56void
57_openpam_log(int level, const char *func, const char *fmt, ...)
58{
59	va_list ap;
60	char *format;
61	int len, priority;
62
63	switch (level) {
64	case PAM_LOG_DEBUG:
65#ifndef DEBUG
66		return;
67#endif
68		priority = LOG_DEBUG;
69		break;
70	case PAM_LOG_VERBOSE:
71		priority = LOG_INFO;
72		break;
73	case PAM_LOG_NOTICE:
74		priority = LOG_NOTICE;
75		break;
76	case PAM_LOG_ERROR:
77		priority = LOG_ERR;
78		break;
79	}
80	va_start(ap, fmt);
81	for (len = strlen(fmt); len > 0 && isspace(fmt[len]); len--)
82		/* nothing */;
83	if ((format = malloc(strlen(func) + len + 16)) != NULL) {
84		sprintf(format, "in %s(): %.*s\n", func, len, fmt);
85		vsyslog(priority, format, ap);
86		free(format);
87	} else {
88		vsyslog(priority, fmt, ap);
89	}
90	va_end(ap);
91}
92
93#else
94
95/*
96 * If openpam_log isn't defined as a macro, we're on a platform that
97 * doesn't support varadic macros (or it does but we aren't aware of
98 * it).  Do the next best thing.
99 */
100
101void
102openpam_log(int level, const char *fmt, ...)
103{
104	va_list ap;
105	int priority;
106
107	switch (level) {
108	case PAM_LOG_DEBUG:
109#ifndef DEBUG
110		return;
111#endif
112		priority = LOG_DEBUG;
113		break;
114	case PAM_LOG_VERBOSE:
115		priority = LOG_INFO;
116		break;
117	case PAM_LOG_NOTICE:
118		priority = LOG_NOTICE;
119		break;
120	case PAM_LOG_ERROR:
121		priority = LOG_ERR;
122		break;
123	}
124	va_start(ap, fmt);
125	vsyslog(priority, fmt, ap);
126	va_end(ap);
127}
128
129#endif
130
131/*
132 * NOLIST
133 */
134