1 /* $OpenBSD: t_exhaust.c,v 1.4 2024/07/15 10:11:56 anton Exp $ */
2 /* $NetBSD: t_exhaust.c,v 1.2 2011/10/21 00:41:34 christos Exp $ */
3
4 /*-
5 * Copyright (c) 2011 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Christos Zoulas.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40 #include <stdio.h>
41 #include <regex.h>
42 #include <string.h>
43 #include <stdlib.h>
44 #include <err.h>
45 //#include <atf-c.h>
46
47
48 static char *
mkstr(const char * str,size_t len)49 mkstr(const char *str, size_t len)
50 {
51 size_t i, slen = strlen(str);
52 char *p = malloc(slen * len + 1);
53 if (p == NULL)
54 err(1, "malloc");
55 for (i = 0; i < len; i++)
56 strlcpy(&p[i * slen], str, slen * len + 1 - (i * slen));
57 return p;
58 }
59
60 static char *
concat(const char * d,const char * s)61 concat(const char *d, const char *s)
62 {
63 size_t dlen = strlen(d);
64 size_t slen = strlen(s);
65 char *p = malloc(dlen + slen + 1);
66 strlcpy(p, d, dlen + slen + 1);
67 strlcat(p, s, dlen + slen + 1);
68 return p;
69 }
70
71 static char *
p0(size_t len)72 p0(size_t len)
73 {
74 char *d, *s1, *s2;
75 s1 = mkstr("\\(", len);
76 s2 = concat(s1, ")");
77 free(s1);
78 d = concat("(", s2);
79 free(s2);
80 return d;
81 }
82
83 static char *
p1(size_t len)84 p1(size_t len)
85 {
86 char *d, *s1, *s2, *s3;
87 s1 = mkstr("\\(", 60);
88 s2 = mkstr("(.*)", len);
89 s3 = concat(s1, s2);
90 free(s2);
91 free(s1);
92 s1 = concat(s3, ")");
93 free(s3);
94 d = concat("(", s1);
95 free(s1);
96 return d;
97 }
98
99 static char *
ps(const char * m,const char * s,size_t len)100 ps(const char *m, const char *s, size_t len)
101 {
102 char *d, *s1, *s2, *s3;
103 s1 = mkstr(m, len);
104 s2 = mkstr(s, len);
105 s3 = concat(s1, s2);
106 free(s2);
107 free(s1);
108 d = concat("(.?)", s3);
109 free(s3);
110 return d;
111 }
112
113 static char *
p2(size_t len)114 p2(size_t len)
115 {
116 return ps("((.*){0,255}", ")", len);
117 }
118
119 static char *
p3(size_t len)120 p3(size_t len)
121 {
122 return ps("(.\\{0,}", ")", len);
123 }
124
125 static char *
p4(size_t len)126 p4(size_t len)
127 {
128 return ps("((.*){1,255}", ")", len);
129 }
130
131 static char *
p5(size_t len)132 p5(size_t len)
133 {
134 return ps("(", "){1,100}", len);
135 }
136
137 static char *
p6(size_t len)138 p6(size_t len)
139 {
140 char *d, *s1, *s2;
141 s1 = mkstr("(?:(.*)|", len);
142 s2 = concat(s1, "(.*)");
143 free(s1);
144 s1 = mkstr(")", len);
145 d = concat(s2, s1);
146 free(s1);
147 free(s2);
148 return d;
149 }
150
151 static char *(*patterns[])(size_t) = {
152 p0,
153 p1,
154 p2,
155 p3,
156 p4,
157 p5,
158 p6,
159 };
160
161 int
main(void)162 main(void)
163 {
164 regex_t re;
165 int e, ret = 0;
166 size_t i;
167
168 for (i = 0; i < sizeof(patterns) / sizeof(patterns[0]); i++) {
169 char *d = (*patterns[i])(9999);
170 e = regcomp(&re, d, i == 6 ? REG_BASIC : REG_EXTENDED);
171 free(d);
172 if (e) {
173 if (e != REG_ESPACE) {
174 printf("regcomp returned %d for pattern %zu", e, i);
175 ret = 1;
176 }
177 continue;
178 }
179 (void)regexec(&re, "aaaaaaaa", 0, NULL, 0);
180 regfree(&re);
181 }
182 return ret;
183 }
184