audit.c revision 189279 
1/*-
2 * Copyright (c) 2005-2009 Apple Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1.  Redistributions of source code must retain the above copyright
10 *     notice, this list of conditions and the following disclaimer.
11 * 2.  Redistributions in binary form must reproduce the above copyright
12 *     notice, this list of conditions and the following disclaimer in the
13 *     documentation and/or other materials provided with the distribution.
14 * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
15 *     its contributors may be used to endorse or promote products derived
16 *     from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * $P4: //depot/projects/trustedbsd/openbsm/bin/audit/audit.c#14 $
30 */
31/*
32 * Program to trigger the audit daemon with a message that is either:
33 *    - Open a new audit log file
34 *    - Read the audit control file and take action on it
35 *    - Close the audit log file and exit
36 *
37 */
38
39#include <sys/types.h>
40#include <config/config.h>
41#ifdef HAVE_FULL_QUEUE_H
42#include <sys/queue.h>
43#else /* !HAVE_FULL_QUEUE_H */
44#include <compat/queue.h>
45#endif /* !HAVE_FULL_QUEUE_H */
46#include <sys/uio.h>
47
48#include <bsm/libbsm.h>
49
50#include <errno.h>
51#include <fcntl.h>
52#include <stdio.h>
53#include <stdlib.h>
54#include <unistd.h>
55
56
57static int send_trigger(unsigned int);
58
59#ifdef USE_MACH_IPC
60#include <mach/mach.h>
61#include <servers/netname.h>
62#include <mach/message.h>
63#include <mach/port.h>
64#include <mach/mach_error.h>
65#include <mach/host_special_ports.h>
66#include <servers/bootstrap.h>
67
68#include "auditd_control.h"
69
70/*
71 * XXX The following are temporary until these can be added to the kernel
72 * audit.h header.
73 */
74#ifndef AUDIT_TRIGGER_INITIALIZE
75#define	AUDIT_TRIGGER_INITIALIZE	7
76#endif
77#ifndef AUDIT_TRIGGER_EXPIRE_TRAILS
78#define	AUDIT_TRIGGER_EXPIRE_TRAILS	8
79#endif
80
81static int
82send_trigger(unsigned int trigger)
83{
84	mach_port_t     serverPort;
85	kern_return_t	error;
86
87	error = host_get_audit_control_port(mach_host_self(), &serverPort);
88	if (error != KERN_SUCCESS) {
89		if (geteuid() != 0) {
90			errno = EPERM;
91			perror("audit requires root privileges");
92		} else
93			mach_error("Cannot get auditd_control Mach port:",
94			    error);
95		return (-1);
96	}
97
98	error = auditd_control(serverPort, trigger);
99	if (error != KERN_SUCCESS) {
100		mach_error("Error sending trigger: ", error);
101		return (-1);
102	}
103
104	return (0);
105}
106
107#else /* ! USE_MACH_IPC */
108
109static int
110send_trigger(unsigned int trigger)
111{
112	int error;
113
114	error = auditon(A_SENDTRIGGER, &trigger, sizeof(trigger));
115	if (error != 0) {
116		if (error == EPERM)
117			perror("audit requires root privileges");
118		else
119			perror("Error sending trigger");
120		return (-1);
121	}
122
123	return (0);
124}
125#endif /* ! USE_MACH_IPC */
126
127static void
128usage(void)
129{
130
131	(void)fprintf(stderr, "Usage: audit -e | -i | -n | -s | -t \n");
132	exit(-1);
133}
134
135/*
136 * Main routine to process command line options.
137 */
138int
139main(int argc, char **argv)
140{
141	int ch;
142	unsigned int trigger = 0;
143
144	if (argc != 2)
145		usage();
146
147	while ((ch = getopt(argc, argv, "einst")) != -1) {
148		switch(ch) {
149
150		case 'e':
151			trigger = AUDIT_TRIGGER_EXPIRE_TRAILS;
152			break;
153
154		case 'i':
155			trigger = AUDIT_TRIGGER_INITIALIZE;
156			break;
157
158		case 'n':
159			trigger = AUDIT_TRIGGER_ROTATE_USER;
160			break;
161
162		case 's':
163			trigger = AUDIT_TRIGGER_READ_FILE;
164			break;
165
166		case 't':
167			trigger = AUDIT_TRIGGER_CLOSE_AND_DIE;
168			break;
169
170		case '?':
171		default:
172			usage();
173			break;
174		}
175	}
176	if (send_trigger(trigger) < 0)
177		exit(-1);
178
179	printf("Trigger sent.\n");
180	exit (0);
181}
182