1/*-
2 * Copyright (c) 2017 Cyril S. E. Schubert
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 REGENTS 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 REGENTS 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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26#include <assert.h>
27#include <stdint.h>
28#include <stdio.h>
29#include <stdlib.h>
30#include <sys/types.h>
31#include <unistd.h>
32#include <sys/wait.h>
33
34#include <atf-c.h>
35
36static errno_t error_code;
37static const char * message;
38
39void
40h(const char * msg, void * ptr __unused, errno_t error)
41{
42	error_code = error;
43	message = msg;
44}
45
46/* null ptr */
47ATF_TC_WITHOUT_HEAD(null_ptr);
48ATF_TC_BODY(null_ptr, tc)
49{
50	ATF_CHECK_MSG(gets_s(NULL, 1) == NULL,
51		"gets_s() failed to handle NULL pointer");
52}
53
54/* normal */
55ATF_TC_WITHOUT_HEAD(normal);
56ATF_TC_BODY(normal, tc)
57{
58	pid_t	kidpid;
59	int	fd[2];
60	int	nfd;
61
62	// close(STDIN_FILENO);
63	// close(STDOUT_FILENO);
64	pipe(fd);
65
66	if ((kidpid = fork()) == 0) {
67		char	b[10];
68
69		close(fd[1]);
70		nfd = dup2(fd[0], 0);
71		close(fd[0]);
72		stdin = fdopen(nfd, "r");
73		ATF_CHECK_MSG(gets_s(b, sizeof(b)) == 0, "gets_s() normal failed");
74		fclose(stdin);
75	} else {
76		int stat;
77
78		close(fd[0]);
79		stdout = fdopen(fd[1], "w");
80		puts("a sting");
81		fclose(stdout);
82		(void) waitpid(kidpid, &stat, WEXITED);
83	}
84}
85
86/* n > rmax */
87ATF_TC_WITHOUT_HEAD(n_gt_rmax);
88ATF_TC_BODY(n_gt_rmax, tc)
89{
90	char b;
91
92	ATF_CHECK_MSG(gets_s(&b, RSIZE_MAX + 1) == NULL,
93		"gets_s() n > RSIZE_MAX");
94}
95
96/* n == 0 */
97ATF_TC_WITHOUT_HEAD(n_eq_zero);
98ATF_TC_BODY(n_eq_zero, tc)
99{
100	char b;
101
102	ATF_CHECK_MSG(gets_s(&b, 0) == NULL, "gets_s() n is zero");
103}
104
105/* n > rmax, handler */
106ATF_TC_WITHOUT_HEAD(n_gt_rmax_handler);
107ATF_TC_BODY(n_gt_rmax_handler, tc)
108{
109	char b;
110
111	error_code = 0;
112	message = NULL;
113	set_constraint_handler_s(h);
114	ATF_CHECK_MSG(gets_s(&b, RSIZE_MAX + 1) == NULL, "gets_s() n > RSIZE_MAX");
115	ATF_CHECK_MSG(error_code > 0, "gets_s() error code is %d", error_code);
116	ATF_CHECK_MSG(strcmp(message, "gets_s : n > RSIZE_MAX") == 0, "gets_s(): incorrect error message");
117}
118
119/* n == 0, handler */
120ATF_TC_WITHOUT_HEAD(n_eq_zero_handler);
121ATF_TC_BODY(n_eq_zero_handler, tc)
122{
123	char b;
124
125	error_code = 0;
126	message = NULL;
127	set_constraint_handler_s(h);
128	ATF_CHECK(gets_s(&b, 0) == NULL);
129	ATF_CHECK_MSG(error_code > 0, "gets_s() error code is %d", error_code);
130	ATF_CHECK_MSG(strcmp(message, "gets_s : n == 0") == 0, "gets_s(): incorrect error message");
131}
132
133ATF_TP_ADD_TCS(tp)
134{
135	ATF_TP_ADD_TC(tp, null_ptr);
136	ATF_TP_ADD_TC(tp, normal);
137	ATF_TP_ADD_TC(tp, n_gt_rmax);
138	ATF_TP_ADD_TC(tp, n_eq_zero);
139	ATF_TP_ADD_TC(tp, n_gt_rmax_handler);
140	ATF_TP_ADD_TC(tp, n_eq_zero_handler);
141	return (atf_no_error());
142}
143