157718be8SEnji Cooper /* $NetBSD: t_strlen.c,v 1.6 2017/01/14 20:49:24 christos Exp $ */
257718be8SEnji Cooper
357718be8SEnji Cooper /*
457718be8SEnji Cooper * Written by J.T. Conklin <jtc@acorntoolworks.com>
557718be8SEnji Cooper * Public domain.
657718be8SEnji Cooper */
757718be8SEnji Cooper
857718be8SEnji Cooper #include <atf-c.h>
957718be8SEnji Cooper #include <string.h>
1057718be8SEnji Cooper #include <unistd.h>
1157718be8SEnji Cooper #include <stdio.h>
1257718be8SEnji Cooper #include <stdlib.h>
1357718be8SEnji Cooper #include <dlfcn.h>
1457718be8SEnji Cooper #include <unistd.h>
1557718be8SEnji Cooper
1657718be8SEnji Cooper static void write_num(int);
1757718be8SEnji Cooper
1857718be8SEnji Cooper static void
write_num(int val)1957718be8SEnji Cooper write_num(int val)
2057718be8SEnji Cooper {
2157718be8SEnji Cooper char buf[20];
2257718be8SEnji Cooper int i;
2357718be8SEnji Cooper
2457718be8SEnji Cooper for (i = sizeof buf; --i >= 0;) {
2557718be8SEnji Cooper buf[i] = '0' + val % 10;
2657718be8SEnji Cooper val /= 10;
2757718be8SEnji Cooper if (val == 0) {
2857718be8SEnji Cooper write(2, buf + i, sizeof buf - i);
2957718be8SEnji Cooper return;
3057718be8SEnji Cooper }
3157718be8SEnji Cooper }
3257718be8SEnji Cooper write(2, "overflow", 8);
3357718be8SEnji Cooper }
3457718be8SEnji Cooper
3557718be8SEnji Cooper ATF_TC(strlen_basic);
ATF_TC_HEAD(strlen_basic,tc)3657718be8SEnji Cooper ATF_TC_HEAD(strlen_basic, tc)
3757718be8SEnji Cooper {
3857718be8SEnji Cooper atf_tc_set_md_var(tc, "descr", "Test strlen(3) results");
3957718be8SEnji Cooper }
4057718be8SEnji Cooper
ATF_TC_BODY(strlen_basic,tc)4157718be8SEnji Cooper ATF_TC_BODY(strlen_basic, tc)
4257718be8SEnji Cooper {
4383e8b13fSEnji Cooper void *dl_handle;
4483e8b13fSEnji Cooper /* try to trick the compiler */
4583e8b13fSEnji Cooper size_t (*strlen_fn)(const char *);
4657718be8SEnji Cooper
4757718be8SEnji Cooper unsigned int a, t;
4857718be8SEnji Cooper size_t len;
4957718be8SEnji Cooper char buf[64];
5057718be8SEnji Cooper
5157718be8SEnji Cooper struct tab {
5257718be8SEnji Cooper const char* val;
5357718be8SEnji Cooper size_t len;
5457718be8SEnji Cooper };
5557718be8SEnji Cooper
5657718be8SEnji Cooper const struct tab tab[] = {
5757718be8SEnji Cooper /*
5857718be8SEnji Cooper * patterns that check for all combinations of leading and
5957718be8SEnji Cooper * trailing unaligned characters (on a 64 bit processor)
6057718be8SEnji Cooper */
6157718be8SEnji Cooper
6257718be8SEnji Cooper { "", 0 },
6357718be8SEnji Cooper { "a", 1 },
6457718be8SEnji Cooper { "ab", 2 },
6557718be8SEnji Cooper { "abc", 3 },
6657718be8SEnji Cooper { "abcd", 4 },
6757718be8SEnji Cooper { "abcde", 5 },
6857718be8SEnji Cooper { "abcdef", 6 },
6957718be8SEnji Cooper { "abcdefg", 7 },
7057718be8SEnji Cooper { "abcdefgh", 8 },
7157718be8SEnji Cooper { "abcdefghi", 9 },
7257718be8SEnji Cooper { "abcdefghij", 10 },
7357718be8SEnji Cooper { "abcdefghijk", 11 },
7457718be8SEnji Cooper { "abcdefghijkl", 12 },
7557718be8SEnji Cooper { "abcdefghijklm", 13 },
7657718be8SEnji Cooper { "abcdefghijklmn", 14 },
7757718be8SEnji Cooper { "abcdefghijklmno", 15 },
7857718be8SEnji Cooper { "abcdefghijklmnop", 16 },
7957718be8SEnji Cooper { "abcdefghijklmnopq", 17 },
8057718be8SEnji Cooper { "abcdefghijklmnopqr", 18 },
8157718be8SEnji Cooper { "abcdefghijklmnopqrs", 19 },
8257718be8SEnji Cooper { "abcdefghijklmnopqrst", 20 },
8357718be8SEnji Cooper { "abcdefghijklmnopqrstu", 21 },
8457718be8SEnji Cooper { "abcdefghijklmnopqrstuv", 22 },
8557718be8SEnji Cooper { "abcdefghijklmnopqrstuvw", 23 },
8657718be8SEnji Cooper
8757718be8SEnji Cooper /*
8857718be8SEnji Cooper * patterns that check for the cases where the expression:
8957718be8SEnji Cooper *
9057718be8SEnji Cooper * ((word - 0x7f7f..7f) & 0x8080..80)
9157718be8SEnji Cooper *
9257718be8SEnji Cooper * returns non-zero even though there are no zero bytes in
9357718be8SEnji Cooper * the word.
9457718be8SEnji Cooper */
9557718be8SEnji Cooper
9657718be8SEnji Cooper { "" "\xff\xff\xff\xff\xff\xff\xff\xff" "abcdefgh", 16 },
9757718be8SEnji Cooper { "a" "\xff\xff\xff\xff\xff\xff\xff\xff" "bcdefgh", 16 },
9857718be8SEnji Cooper { "ab" "\xff\xff\xff\xff\xff\xff\xff\xff" "cdefgh", 16 },
9957718be8SEnji Cooper { "abc" "\xff\xff\xff\xff\xff\xff\xff\xff" "defgh", 16 },
10057718be8SEnji Cooper { "abcd" "\xff\xff\xff\xff\xff\xff\xff\xff" "efgh", 16 },
10157718be8SEnji Cooper { "abcde" "\xff\xff\xff\xff\xff\xff\xff\xff" "fgh", 16 },
10257718be8SEnji Cooper { "abcdef" "\xff\xff\xff\xff\xff\xff\xff\xff" "gh", 16 },
10357718be8SEnji Cooper { "abcdefg" "\xff\xff\xff\xff\xff\xff\xff\xff" "h", 16 },
10457718be8SEnji Cooper { "abcdefgh" "\xff\xff\xff\xff\xff\xff\xff\xff" "", 16 },
10557718be8SEnji Cooper };
10657718be8SEnji Cooper
10757718be8SEnji Cooper /*
10857718be8SEnji Cooper * During testing it is useful have the rest of the program
10957718be8SEnji Cooper * use a known good version!
11057718be8SEnji Cooper */
11157718be8SEnji Cooper dl_handle = dlopen(NULL, RTLD_LAZY);
11257718be8SEnji Cooper strlen_fn = dlsym(dl_handle, "test_strlen");
11383e8b13fSEnji Cooper if (!strlen_fn)
11483e8b13fSEnji Cooper strlen_fn = strlen;
11583e8b13fSEnji Cooper
11683e8b13fSEnji Cooper for (a = 0; a < sizeof(long); ++a) {
11757718be8SEnji Cooper for (t = 0; t < (sizeof(tab) / sizeof(tab[0])); ++t) {
11883e8b13fSEnji Cooper
11957718be8SEnji Cooper memcpy(&buf[a], tab[t].val, tab[t].len + 1);
12057718be8SEnji Cooper len = strlen_fn(&buf[a]);
12157718be8SEnji Cooper
12257718be8SEnji Cooper if (len != tab[t].len) {
12357718be8SEnji Cooper /* Write error without using printf / strlen */
12457718be8SEnji Cooper write(2, "alignment ", 10);
12557718be8SEnji Cooper write_num(a);
12657718be8SEnji Cooper write(2, ", test ", 7);
12757718be8SEnji Cooper write_num(t);
12857718be8SEnji Cooper write(2, ", got len ", 10);
12957718be8SEnji Cooper write_num(len);
13057718be8SEnji Cooper write(2, ", not ", 6);
13157718be8SEnji Cooper write_num(tab[t].len);
13257718be8SEnji Cooper write(2, ", for '", 7);
13357718be8SEnji Cooper write(2, tab[t].val, tab[t].len);
13457718be8SEnji Cooper write(2, "'\n", 2);
13557718be8SEnji Cooper atf_tc_fail("See stderr for details");
13657718be8SEnji Cooper }
13757718be8SEnji Cooper }
13857718be8SEnji Cooper }
13957718be8SEnji Cooper (void)dlclose(dl_handle);
14057718be8SEnji Cooper }
14157718be8SEnji Cooper
14257718be8SEnji Cooper ATF_TC(strlen_huge);
ATF_TC_HEAD(strlen_huge,tc)14357718be8SEnji Cooper ATF_TC_HEAD(strlen_huge, tc)
14457718be8SEnji Cooper {
14583e8b13fSEnji Cooper atf_tc_set_md_var(tc, "descr", "Test strlen(3) with huge strings");
14683e8b13fSEnji Cooper }
14783e8b13fSEnji Cooper
ATF_TC_BODY(strlen_huge,tc)14857718be8SEnji Cooper ATF_TC_BODY(strlen_huge, tc)
14957718be8SEnji Cooper {
15057718be8SEnji Cooper long page;
15157718be8SEnji Cooper char *str;
15257718be8SEnji Cooper size_t i;
15357718be8SEnji Cooper
15457718be8SEnji Cooper page = sysconf(_SC_PAGESIZE);
15557718be8SEnji Cooper ATF_REQUIRE(page >= 0);
15657718be8SEnji Cooper
15757718be8SEnji Cooper for (i = 1; i < 1000; i = i + 100) {
15857718be8SEnji Cooper
15957718be8SEnji Cooper str = malloc(i * page + 1);
16057718be8SEnji Cooper
16157718be8SEnji Cooper if (str == NULL)
16257718be8SEnji Cooper continue;
16357718be8SEnji Cooper
16457718be8SEnji Cooper (void)memset(str, 'x', i * page);
16557718be8SEnji Cooper str[i * page] = '\0';
16657718be8SEnji Cooper
16757718be8SEnji Cooper ATF_REQUIRE(strlen(str) == i * page);
16857718be8SEnji Cooper free(str);
16957718be8SEnji Cooper }
17057718be8SEnji Cooper }
17157718be8SEnji Cooper
17257718be8SEnji Cooper ATF_TC(strnlen_basic);
ATF_TC_HEAD(strnlen_basic,tc)17357718be8SEnji Cooper ATF_TC_HEAD(strnlen_basic, tc)
17457718be8SEnji Cooper {
17557718be8SEnji Cooper atf_tc_set_md_var(tc, "descr", "A naive test of strnlen(3)");
17657718be8SEnji Cooper }
17757718be8SEnji Cooper
ATF_TC_BODY(strnlen_basic,tc)17857718be8SEnji Cooper ATF_TC_BODY(strnlen_basic, tc)
17957718be8SEnji Cooper {
18057718be8SEnji Cooper char buf[1];
18157718be8SEnji Cooper
18257718be8SEnji Cooper buf[0] = '\0';
18357718be8SEnji Cooper
18457718be8SEnji Cooper ATF_CHECK(strnlen(buf, 000) == 0);
18557718be8SEnji Cooper ATF_CHECK(strnlen(buf, 111) == 0);
18657718be8SEnji Cooper
18757718be8SEnji Cooper ATF_CHECK(strnlen("xxx", 0) == 0);
18857718be8SEnji Cooper ATF_CHECK(strnlen("xxx", 1) == 1);
18957718be8SEnji Cooper ATF_CHECK(strnlen("xxx", 2) == 2);
19057718be8SEnji Cooper ATF_CHECK(strnlen("xxx", 3) == 3);
19157718be8SEnji Cooper ATF_CHECK(strnlen("xxx", 9) == 3);
19257718be8SEnji Cooper }
19357718be8SEnji Cooper
ATF_TP_ADD_TCS(tp)19457718be8SEnji Cooper ATF_TP_ADD_TCS(tp)
19557718be8SEnji Cooper {
19657718be8SEnji Cooper
19757718be8SEnji Cooper ATF_TP_ADD_TC(tp, strlen_basic);
19857718be8SEnji Cooper ATF_TP_ADD_TC(tp, strlen_huge);
19957718be8SEnji Cooper ATF_TP_ADD_TC(tp, strnlen_basic);
20057718be8SEnji Cooper
20157718be8SEnji Cooper return atf_no_error();
20257718be8SEnji Cooper }
20357718be8SEnji Cooper