openpam_log.c revision 115619 
1118824Sharti/*-
2118824Sharti * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
3118824Sharti * All rights reserved.
4119075Sobrien *
5118824Sharti * This software was developed for the FreeBSD Project by ThinkSec AS and
6118824Sharti * Network Associates Laboratories, the Security Research Division of
7119075Sobrien * Network Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
8226440Scognet * ("CBOSS"), as part of the DARPA CHATS research program.
9226440Scognet *
10118824Sharti * Redistribution and use in source and binary forms, with or without
11270824Sngie * modification, are permitted provided that the following conditions
12118824Sharti * are met:
13291794Sbdrewery * 1. Redistributions of source code must retain the above copyright
14129215Scognet *    notice, this list of conditions and the following disclaimer.
15133565Sharti * 2. Redistributions in binary form must reproduce the above copyright
16133565Sharti *    notice, this list of conditions and the following disclaimer in the
17270824Sngie *    documentation and/or other materials provided with the distribution.
18270824Sngie * 3. The name of the author may not be used to endorse or promote
19270824Sngie *    products derived from this software without specific prior written
20270824Sngie *    permission.
21270824Sngie *
22226440Scognet * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23270824Sngie * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24226440Scognet * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25226440Scognet * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26133565Sharti * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27133565Sharti * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28133565Sharti * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29133565Sharti * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30211725Simp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31211725Simp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32129215Scognet * SUCH DAMAGE.
33129215Scognet *
34118824Sharti * $P4: //depot/projects/openpam/lib/openpam_log.c#23 $
35133565Sharti */
36291794Sbdrewery
37118824Sharti#include <ctype.h>
38133565Sharti#include <stdarg.h>
39143617Sharti#include <stdio.h>
40133565Sharti#include <stdlib.h>
41270824Sngie#include <string.h>
42133565Sharti#include <syslog.h>
43270824Sngie
44133565Sharti#include <security/pam_appl.h>
45118824Sharti
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
56 */
57
58void
59openpam_log(int level, const char *fmt, ...)
60{
61	va_list ap;
62	int priority;
63
64	switch (level) {
65	case PAM_LOG_DEBUG:
66		if (!_openpam_debug)
67			return;
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	default:
78		priority = LOG_ERR;
79		break;
80	}
81	va_start(ap, fmt);
82	vsyslog(priority, fmt, ap);
83	va_end(ap);
84}
85
86#else
87
88void
89_openpam_log(int level, const char *func, const char *fmt, ...)
90{
91	va_list ap;
92	char *format;
93	int priority;
94
95	switch (level) {
96	case PAM_LOG_DEBUG:
97		if (!_openpam_debug)
98			return;
99		priority = LOG_DEBUG;
100		break;
101	case PAM_LOG_VERBOSE:
102		priority = LOG_INFO;
103		break;
104	case PAM_LOG_NOTICE:
105		priority = LOG_NOTICE;
106		break;
107	case PAM_LOG_ERROR:
108	default:
109		priority = LOG_ERR;
110		break;
111	}
112	va_start(ap, fmt);
113	if (asprintf(&format, "in %s(): %s", func, fmt) > 0) {
114		vsyslog(priority, format, ap);
115		FREE(format);
116	} else {
117		vsyslog(priority, fmt, ap);
118	}
119	va_end(ap);
120}
121
122#endif
123
124/**
125 * The =openpam_log function logs messages using =syslog.  It is primarily
126 * intended for internal use by the library and modules.
127 *
128 * The =level argument indicates the importance of the message.  The
129 * following levels are defined:
130 *
131 *	=PAM_LOG_DEBUG:
132 *		Debugging messages.  These messages are normally not
133 *		logged unless the global integer variable :_openpam_debug
134 *		is set to a non-zero value, in which case they are logged
135 *		with a =syslog priority of =LOG_DEBUG.
136 *	=PAM_LOG_VERBOSE:
137 *		Information about the progress of the authentication
138 *		process, or other non-essential messages.  These messages
139 *		are logged with a =syslog priority of =LOG_INFO.
140 *	=PAM_LOG_NOTICE:
141 *		Messages relating to non-fatal errors.  These messages are
142 *		logged with a =syslog priority of =LOG_NOTICE.
143 *	=PAM_LOG_ERROR:
144 *		Messages relating to serious errors.  These messages are
145 *		logged with a =syslog priority of =LOG_ERR.
146 *
147 * The remaining arguments are a =printf format string and the
148 * corresponding arguments.
149 */
150