auditfilterd.h revision 293161 
1/*-
2 * Copyright (c) 2006 Robert N. M. Watson
3 * All rights reserved.
4 *
5 * This software was developed by Robert Watson for the TrustedBSD Project.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#define	AUDITFILTERD_CONFFILE	"/etc/security/audit_filter"
30#define	AUDITFILTERD_PIPEFILE	"/dev/auditpipe"
31
32/*
33 * Limit on the number of arguments that can appear in an audit_filterd
34 * configuration line.
35 */
36#define	AUDITFILTERD_CONF_MAXARGS	256
37
38/*
39 * Data structure description each instantiated module.
40 */
41struct auditfilter_module {
42	/*
43	 * Fields from configuration file and dynamic linker.
44	 */
45	char						*am_modulename;
46	char						*am_arg_buffer;
47	int						 am_argc;
48	char						**am_argv;
49	void						*am_dlhandle;
50
51	/*
52	 * Fields provided by or extracted from the module.
53	 */
54	void						*am_cookie;
55	audit_filter_attach_t				 am_attach;
56	audit_filter_reinit_t				 am_reinit;
57	audit_filter_record_t				 am_record;
58	audit_filter_rawrecord_t			 am_rawrecord;
59	audit_filter_detach_t				 am_detach;
60
61	/*
62	 * Fields for maintaining the list of modules.
63	 */
64	TAILQ_ENTRY(auditfilter_module)			 am_list;
65};
66TAILQ_HEAD(auditfilter_module_list, auditfilter_module);
67
68/*
69 * List of currently registered modules.
70 */
71extern struct auditfilter_module_list	filter_list;
72
73/*
74 * Function definitions.
75 */
76int	auditfilterd_conf(const char *filename, FILE *fp);
77void	auditfilterd_conf_shutdown(void);
78