1/* $NetBSD: t_strcat.c,v 1.2 2011/07/14 05:46:04 jruoho Exp $ */
2
3/*
4 * Written by J.T. Conklin <jtc@acorntoolworks.com>
5 * Public domain.
6 */
7
8#include <atf-c.h>
9#include <string.h>
10#include <unistd.h>
11#include <stdio.h>
12#include <stdlib.h>
13
14ATF_TC(strcat_basic);
15ATF_TC_HEAD(strcat_basic, tc)
16{
17        atf_tc_set_md_var(tc, "descr", "Test strcat(3) results");
18}
19
20ATF_TC_BODY(strcat_basic, tc)
21{
22	/* try to trick the compiler */
23	char * (*f)(char *, const char *s) = strcat;
24
25	unsigned int a0, a1, t0, t1;
26	char buf0[64];
27	char buf1[64];
28	char *ret;
29
30	struct tab {
31		const char*	val;
32		size_t		len;
33	};
34
35	const struct tab tab[] = {
36	/*
37	 * patterns that check for all combinations of leading and
38	 * trailing unaligned characters (on a 64 bit processor)
39	 */
40
41		{ "",				0 },
42		{ "a",				1 },
43		{ "ab",				2 },
44		{ "abc",			3 },
45		{ "abcd",			4 },
46		{ "abcde",			5 },
47		{ "abcdef",			6 },
48		{ "abcdefg",			7 },
49		{ "abcdefgh",			8 },
50		{ "abcdefghi",			9 },
51		{ "abcdefghij",			10 },
52		{ "abcdefghijk",		11 },
53		{ "abcdefghijkl",		12 },
54		{ "abcdefghijklm",		13 },
55		{ "abcdefghijklmn",		14 },
56		{ "abcdefghijklmno",		15 },
57		{ "abcdefghijklmnop",		16 },
58		{ "abcdefghijklmnopq",		17 },
59		{ "abcdefghijklmnopqr",		18 },
60		{ "abcdefghijklmnopqrs",	19 },
61		{ "abcdefghijklmnopqrst",	20 },
62		{ "abcdefghijklmnopqrstu",	21 },
63		{ "abcdefghijklmnopqrstuv",	22 },
64		{ "abcdefghijklmnopqrstuvw",	23 },
65
66		/*
67		 * patterns that check for the cases where the expression:
68		 *
69		 *	((word - 0x7f7f..7f) & 0x8080..80)
70		 *
71		 * returns non-zero even though there are no zero bytes in
72		 * the word.
73		 */
74
75		{ "" "\xff\xff\xff\xff\xff\xff\xff\xff" "abcdefgh",	16 },
76		{ "a" "\xff\xff\xff\xff\xff\xff\xff\xff" "bcdefgh",	16 },
77		{ "ab" "\xff\xff\xff\xff\xff\xff\xff\xff" "cdefgh",	16 },
78		{ "abc" "\xff\xff\xff\xff\xff\xff\xff\xff" "defgh",	16 },
79		{ "abcd" "\xff\xff\xff\xff\xff\xff\xff\xff" "efgh",	16 },
80		{ "abcde" "\xff\xff\xff\xff\xff\xff\xff\xff" "fgh",	16 },
81		{ "abcdef" "\xff\xff\xff\xff\xff\xff\xff\xff" "gh",	16 },
82		{ "abcdefg" "\xff\xff\xff\xff\xff\xff\xff\xff" "h",	16 },
83		{ "abcdefgh" "\xff\xff\xff\xff\xff\xff\xff\xff" "",	16 },
84	};
85
86	for (a0 = 0; a0 < sizeof(long); ++a0) {
87		for (a1 = 0; a1 < sizeof(long); ++a1) {
88			for (t0 = 0; t0 < __arraycount(tab); ++t0) {
89				for (t1 = 0; t1 < __arraycount(tab); ++t1) {
90
91					memcpy(&buf0[a0], tab[t0].val,
92					    tab[t0].len + 1);
93					memcpy(&buf1[a1], tab[t1].val,
94					    tab[t1].len + 1);
95
96					ret = f(&buf0[a0], &buf1[a1]);
97
98					/*
99					 * verify strcat returns address
100					 * of first parameter
101					 */
102					if (&buf0[a0] != ret) {
103						fprintf(stderr, "a0 %d, a1 %d, "
104						    "t0 %d, t1 %d\n",
105						    a0, a1, t0, t1);
106						atf_tc_fail("strcat did not "
107						    "return its first arg");
108					}
109
110					/* verify string copied correctly */
111					if (memcmp(&buf0[a0] + tab[t0].len,
112						   &buf1[a1],
113						   tab[t1].len + 1) != 0) {
114						fprintf(stderr, "a0 %d, a1 %d, "
115						    "t0 %d, t1 %d\n",
116						    a0, a1, t0, t1);
117						atf_tc_fail("string not copied "
118						    "correctly");
119					}
120				}
121			}
122		}
123	}
124}
125
126ATF_TC(strncat_simple);
127ATF_TC_HEAD(strncat_simple, tc)
128{
129        atf_tc_set_md_var(tc, "descr", "Test strncat(3) results");
130}
131
132ATF_TC_BODY(strncat_simple, tc)
133{
134	char buf[100] = "abcdefg";
135
136	ATF_CHECK(strncat(buf, "xxx", 0) == buf);
137	ATF_CHECK(strcmp(buf, "abcdefg") == 0);
138	ATF_CHECK(strncat(buf, "xxx", 1) == buf);
139	ATF_CHECK(strcmp(buf, "abcdefgx") == 0);
140	ATF_CHECK(strncat(buf, "xxx", 2) == buf);
141	ATF_CHECK(strcmp(buf, "abcdefgxxx") == 0);
142	ATF_CHECK(strncat(buf, "\0", 1) == buf);
143	ATF_CHECK(strcmp(buf, "abcdefgxxx") == 0);
144}
145
146ATF_TP_ADD_TCS(tp)
147{
148
149	ATF_TP_ADD_TC(tp, strcat_basic);
150	ATF_TP_ADD_TC(tp, strncat_simple);
151
152	return atf_no_error();
153}
154