1 /*-
2  * Copyright (c) 2018 Aniket Pandey
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * SUCH DAMAGE.
24  *
25  * $FreeBSD$
26  */
27 
28 #include <sys/ioctl.h>
29 
30 #include <bsm/audit.h>
31 #include <security/audit/audit_ioctl.h>
32 
33 #include <atf-c.h>
34 #include <fcntl.h>
35 #include <stdio.h>
36 #include <unistd.h>
37 
38 static int filedesc;
39 static FILE *fileptr;
40 
41 ATF_TC(auditpipe_get_qlen);
42 ATF_TC_HEAD(auditpipe_get_qlen, tc)
43 {
44 	atf_tc_set_md_var(tc, "descr", "Verifies whether the auditpipe ioctl, "
45 					"AUDITPIPE_GET_QLEN works properly");
46 }
47 
48 ATF_TC_BODY(auditpipe_get_qlen, tc)
49 {
50 	int qlen = -1;
51 	ATF_REQUIRE((filedesc = open("/dev/auditpipe", O_RDONLY)) != -1);
52 	ATF_REQUIRE_EQ(0, ioctl(filedesc, AUDITPIPE_GET_QLEN, &qlen));
53 	ATF_REQUIRE(qlen != -1);
54 	close(filedesc);
55 }
56 
57 
58 ATF_TC(auditpipe_get_qlimit);
59 ATF_TC_HEAD(auditpipe_get_qlimit, tc)
60 {
61 	atf_tc_set_md_var(tc, "descr", "Verifies whether the auditpipe ioctl, "
62 					"AUDITPIPE_GET_QLIMIT works properly");
63 }
64 
65 ATF_TC_BODY(auditpipe_get_qlimit, tc)
66 {
67 	int qlimit = -1;
68 	ATF_REQUIRE((filedesc = open("/dev/auditpipe", O_RDONLY)) != -1);
69 	ATF_REQUIRE_EQ(0, ioctl(filedesc, AUDITPIPE_GET_QLIMIT, &qlimit));
70 	ATF_REQUIRE(qlimit != -1);
71 	close(filedesc);
72 }
73 
74 
75 ATF_TC_WITH_CLEANUP(auditpipe_set_qlimit);
76 ATF_TC_HEAD(auditpipe_set_qlimit, tc)
77 {
78 	atf_tc_set_md_var(tc, "descr", "Verifies whether the auditpipe ioctl, "
79 					"AUDITPIPE_SET_QLIMIT works properly");
80 }
81 
82 ATF_TC_BODY(auditpipe_set_qlimit, tc)
83 {
84 	int test_qlimit, curr_qlimit, recv_qlimit;
85 
86 	ATF_REQUIRE((filedesc = open("/dev/auditpipe", O_RDONLY)) != -1);
87 	/* Retreive the current QLIMIT value and store it in a file */
88 	ATF_REQUIRE_EQ(0, ioctl(filedesc, AUDITPIPE_GET_QLIMIT, &curr_qlimit));
89 	ATF_REQUIRE((fileptr = fopen("qlimit_store", "a")) != NULL);
90 	ATF_REQUIRE_EQ(sizeof(curr_qlimit),
91 		fprintf(fileptr, "%d\n", curr_qlimit));
92 
93 	/*
94 	 * Set QLIMIT different from the current system value to confirm
95 	 * proper functioning of AUDITPIPE_SET_QLIMIT ioctl.
96 	 */
97 	test_qlimit = curr_qlimit - 1;
98 	ATF_REQUIRE_EQ(0, ioctl(filedesc, AUDITPIPE_SET_QLIMIT, &test_qlimit));
99 	/* Receive modified value and check whether QLIMIT was set correctly */
100 	ATF_REQUIRE_EQ(0, ioctl(filedesc, AUDITPIPE_GET_QLIMIT, &recv_qlimit));
101 	ATF_REQUIRE_EQ(test_qlimit, recv_qlimit);
102 
103 	fclose(fileptr);
104 	close(filedesc);
105 }
106 
107 ATF_TC_CLEANUP(auditpipe_set_qlimit, tc)
108 {
109 	if (atf_utils_file_exists("qlimit_store")) {
110 		int fd, curr_qlim;
111 		ATF_REQUIRE((fileptr = fopen("qlimit_store", "r")) != NULL);
112 		ATF_REQUIRE(fscanf(fileptr, "%d", &curr_qlim));
113 
114 		ATF_REQUIRE((fd = open("/dev/auditpipe", O_RDONLY)) != -1);
115 		/* Set QLIMIT's value as it was prior to test-case invocation */
116 		ATF_REQUIRE_EQ(0, ioctl(fd, AUDITPIPE_SET_QLIMIT, &curr_qlim));
117 
118 		close(fd);
119 		fclose(fileptr);
120 	}
121 }
122 
123 
124 ATF_TC(auditpipe_get_qlimit_min);
125 ATF_TC_HEAD(auditpipe_get_qlimit_min, tc)
126 {
127 	atf_tc_set_md_var(tc, "descr", "Verifies whether the auditpipe ioctl, "
128 				"AUDITPIPE_GET_QLIMIT_MIN works properly");
129 }
130 
131 ATF_TC_BODY(auditpipe_get_qlimit_min, tc)
132 {
133 	int qlim_min = -1;
134 	ATF_REQUIRE((filedesc = open("/dev/auditpipe", O_RDONLY)) != -1);
135 	ATF_REQUIRE_EQ(0, ioctl(filedesc, AUDITPIPE_GET_QLIMIT_MIN, &qlim_min));
136 	ATF_REQUIRE(qlim_min != -1);
137 	close(filedesc);
138 }
139 
140 
141 ATF_TC(auditpipe_get_qlimit_max);
142 ATF_TC_HEAD(auditpipe_get_qlimit_max, tc)
143 {
144 	atf_tc_set_md_var(tc, "descr", "Verifies whether the auditpipe ioctl, "
145 				"AUDITPIPE_GET_QLIMIT_MAX works properly");
146 }
147 
148 ATF_TC_BODY(auditpipe_get_qlimit_max, tc)
149 {
150 	int qlim_max = -1;
151 	ATF_REQUIRE((filedesc = open("/dev/auditpipe", O_RDONLY)) != -1);
152 	ATF_REQUIRE_EQ(0, ioctl(filedesc, AUDITPIPE_GET_QLIMIT_MAX, &qlim_max));
153 	ATF_REQUIRE(qlim_max != -1);
154 	close(filedesc);
155 }
156 
157 
158 ATF_TC(auditpipe_get_maxauditdata);
159 ATF_TC_HEAD(auditpipe_get_maxauditdata, tc)
160 {
161 	atf_tc_set_md_var(tc, "descr", "Verifies whether the auditpipe ioctl, "
162 				"AUDITPIPE_GET_MAXAUDITDATA works properly");
163 }
164 
165 ATF_TC_BODY(auditpipe_get_maxauditdata, tc)
166 {
167 	int audata = -1;
168 	ATF_REQUIRE((filedesc = open("/dev/auditpipe", O_RDONLY)) != -1);
169 	ATF_REQUIRE_EQ(0, ioctl(filedesc, AUDITPIPE_GET_MAXAUDITDATA, &audata));
170 	ATF_REQUIRE(audata != -1);
171 	close(filedesc);
172 }
173 
174 
175 ATF_TP_ADD_TCS(tp)
176 {
177 	ATF_TP_ADD_TC(tp, auditpipe_get_qlen);
178 	ATF_TP_ADD_TC(tp, auditpipe_get_qlimit);
179 	ATF_TP_ADD_TC(tp, auditpipe_set_qlimit);
180 	ATF_TP_ADD_TC(tp, auditpipe_get_qlimit_min);
181 	ATF_TP_ADD_TC(tp, auditpipe_get_qlimit_max);
182 	ATF_TP_ADD_TC(tp, auditpipe_get_maxauditdata);
183 
184 	return (atf_no_error());
185 }
186