| /* Test and measure __strcpy_chk functions. |
| Copyright (C) 1999-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Written by Jakub Jelinek <jakub@redhat.com>, 1999. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef STRCPY_RESULT |
| # define STRCPY_RESULT(dst, len) dst |
| # define TEST_MAIN |
| # define TEST_NAME "strcpy_chk" |
| # include "../string/test-string.h" |
| |
| /* This test case implicitly tests the availability of the __chk_fail |
| symbol, which is part of the public ABI and may be used |
| externally. */ |
| extern void __attribute__ ((noreturn)) __chk_fail (void); |
| char *simple_strcpy_chk (char *, const char *, size_t); |
| extern char *normal_strcpy (char *, const char *, size_t) |
| __asm ("strcpy"); |
| extern char *__strcpy_chk (char *, const char *, size_t); |
| |
| IMPL (simple_strcpy_chk, 0) |
| IMPL (normal_strcpy, 1) |
| IMPL (__strcpy_chk, 2) |
| |
| char * |
| simple_strcpy_chk (char *dst, const char *src, size_t len) |
| { |
| char *ret = dst; |
| if (! len) |
| __chk_fail (); |
| while ((*dst++ = *src++) != '\0') |
| if (--len == 0) |
| __chk_fail (); |
| return ret; |
| } |
| #endif |
| |
| #include <fcntl.h> |
| #include <paths.h> |
| #include <setjmp.h> |
| #include <signal.h> |
| |
| volatile int chk_fail_ok; |
| jmp_buf chk_fail_buf; |
| |
| static void |
| handler (int sig) |
| { |
| if (chk_fail_ok) |
| { |
| chk_fail_ok = 0; |
| longjmp (chk_fail_buf, 1); |
| } |
| else |
| _exit (127); |
| } |
| |
| typedef char *(*proto_t) (char *, const char *, size_t); |
| |
| static void |
| do_one_test (impl_t *impl, char *dst, const char *src, |
| size_t len, size_t dlen) |
| { |
| char *res; |
| if (dlen <= len) |
| { |
| if (impl->test == 1) |
| return; |
| |
| chk_fail_ok = 1; |
| if (setjmp (chk_fail_buf) == 0) |
| { |
| res = CALL (impl, dst, src, dlen); |
| printf ("*** Function %s (%zd; %zd) did not __chk_fail\n", |
| impl->name, len, dlen); |
| chk_fail_ok = 0; |
| ret = 1; |
| } |
| return; |
| } |
| else |
| res = CALL (impl, dst, src, dlen); |
| |
| if (res != STRCPY_RESULT (dst, len)) |
| { |
| printf ("Wrong result in function %s %p %p\n", impl->name, |
| res, STRCPY_RESULT (dst, len)); |
| ret = 1; |
| return; |
| } |
| |
| if (strcmp (dst, src) != 0) |
| { |
| printf ("Wrong result in function %s dst \"%s\" src \"%s\"\n", |
| impl->name, dst, src); |
| ret = 1; |
| return; |
| } |
| } |
| |
| static void |
| do_test (size_t align1, size_t align2, size_t len, size_t dlen, int max_char) |
| { |
| size_t i; |
| char *s1, *s2; |
| |
| align1 &= 7; |
| if (align1 + len >= page_size) |
| return; |
| |
| align2 &= 7; |
| if (align2 + len >= page_size) |
| return; |
| |
| s1 = (char *) buf1 + align1; |
| s2 = (char *) buf2 + align2; |
| |
| for (i = 0; i < len; i++) |
| s1[i] = 32 + 23 * i % (max_char - 32); |
| s1[len] = 0; |
| |
| FOR_EACH_IMPL (impl, 0) |
| do_one_test (impl, s2, s1, len, dlen); |
| } |
| |
| static void |
| do_random_tests (void) |
| { |
| size_t i, j, n, align1, align2, len, dlen; |
| unsigned char *p1 = buf1 + page_size - 512; |
| unsigned char *p2 = buf2 + page_size - 512; |
| unsigned char *res; |
| |
| for (n = 0; n < ITERATIONS; n++) |
| { |
| align1 = random () & 31; |
| if (random () & 1) |
| align2 = random () & 31; |
| else |
| align2 = align1 + (random () & 24); |
| len = random () & 511; |
| j = align1; |
| if (align2 > j) |
| j = align2; |
| if (len + j >= 511) |
| len = 510 - j - (random () & 7); |
| j = len + align1 + 64; |
| if (j > 512) |
| j = 512; |
| for (i = 0; i < j; i++) |
| { |
| if (i == len + align1) |
| p1[i] = 0; |
| else |
| { |
| p1[i] = random () & 255; |
| if (i >= align1 && i < len + align1 && !p1[i]) |
| p1[i] = (random () & 127) + 3; |
| } |
| } |
| |
| switch (random () & 7) |
| { |
| case 0: |
| dlen = len - (random () & 31); |
| if (dlen > len) |
| dlen = len; |
| break; |
| case 1: |
| dlen = (size_t) -1; |
| break; |
| case 2: |
| dlen = len + 1 + (random () & 65535); |
| break; |
| case 3: |
| dlen = len + 1 + (random () & 255); |
| break; |
| case 4: |
| dlen = len + 1 + (random () & 31); |
| break; |
| case 5: |
| dlen = len + 1 + (random () & 7); |
| break; |
| case 6: |
| dlen = len + 1 + (random () & 3); |
| break; |
| default: |
| dlen = len + 1; |
| break; |
| } |
| |
| FOR_EACH_IMPL (impl, 1) |
| { |
| if (dlen <= len) |
| { |
| if (impl->test != 1) |
| { |
| chk_fail_ok = 1; |
| if (setjmp (chk_fail_buf) == 0) |
| { |
| res = (unsigned char *) |
| CALL (impl, (char *) p2 + align2, |
| (char *) p1 + align1, dlen); |
| printf ("Iteration %zd - did not __chk_fail\n", n); |
| chk_fail_ok = 0; |
| ret = 1; |
| } |
| } |
| continue; |
| } |
| memset (p2 - 64, '\1', 512 + 64); |
| res = (unsigned char *) |
| CALL (impl, (char *) p2 + align2, (char *) p1 + align1, dlen); |
| if (res != STRCPY_RESULT (p2 + align2, len)) |
| { |
| printf ("\ |
| Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p\n", |
| n, impl->name, align1, align2, len, res, |
| STRCPY_RESULT (p2 + align2, len)); |
| ret = 1; |
| } |
| for (j = 0; j < align2 + 64; ++j) |
| { |
| if (p2[j - 64] != '\1') |
| { |
| printf ("\ |
| Iteration %zd - garbage before, %s (%zd, %zd, %zd)\n", |
| n, impl->name, align1, align2, len); |
| ret = 1; |
| break; |
| } |
| } |
| for (j = align2 + len + 1; j < 512; ++j) |
| { |
| if (p2[j] != '\1') |
| { |
| printf ("\ |
| Iteration %zd - garbage after, %s (%zd, %zd, %zd)\n", |
| n, impl->name, align1, align2, len); |
| ret = 1; |
| break; |
| } |
| } |
| if (memcmp (p1 + align1, p2 + align2, len + 1)) |
| { |
| printf ("\ |
| Iteration %zd - different strings, %s (%zd, %zd, %zd)\n", |
| n, impl->name, align1, align2, len); |
| ret = 1; |
| } |
| } |
| } |
| } |
| |
| int |
| test_main (void) |
| { |
| size_t i; |
| |
| struct sigaction sa; |
| sa.sa_handler = handler; |
| sa.sa_flags = 0; |
| sigemptyset (&sa.sa_mask); |
| |
| sigaction (SIGABRT, &sa, NULL); |
| |
| /* Avoid all the buffer overflow messages on stderr. */ |
| int fd = open (_PATH_DEVNULL, O_WRONLY); |
| if (fd == -1) |
| close (STDERR_FILENO); |
| else |
| { |
| dup2 (fd, STDERR_FILENO); |
| close (fd); |
| } |
| setenv ("LIBC_FATAL_STDERR_", "1", 1); |
| |
| test_init (); |
| |
| printf ("%23s", ""); |
| FOR_EACH_IMPL (impl, 0) |
| printf ("\t%s", impl->name); |
| putchar ('\n'); |
| |
| for (i = 0; i < 16; ++i) |
| { |
| do_test (0, 0, i, i + 1, 127); |
| do_test (0, 0, i, i + 1, 255); |
| do_test (0, i, i, i + 1, 127); |
| do_test (i, 0, i, i + 1, 255); |
| } |
| |
| for (i = 1; i < 8; ++i) |
| { |
| do_test (0, 0, 8 << i, (8 << i) + 1, 127); |
| do_test (8 - i, 2 * i, (8 << i), (8 << i) + 1, 127); |
| } |
| |
| for (i = 1; i < 8; ++i) |
| { |
| do_test (i, 2 * i, (8 << i), (8 << i) + 1, 127); |
| do_test (2 * i, i, (8 << i), (8 << i) + 1, 255); |
| do_test (i, i, (8 << i), (8 << i) + 1, 127); |
| do_test (i, i, (8 << i), (8 << i) + 1, 255); |
| } |
| |
| for (i = 0; i < 16; ++i) |
| { |
| do_test (0, 0, i, i + 256, 127); |
| do_test (0, 0, i, i + 256, 255); |
| do_test (0, i, i, i + 256, 127); |
| do_test (i, 0, i, i + 256, 255); |
| } |
| |
| for (i = 1; i < 8; ++i) |
| { |
| do_test (0, 0, 8 << i, (8 << i) + 256, 127); |
| do_test (8 - i, 2 * i, (8 << i), (8 << i) + 256, 127); |
| } |
| |
| for (i = 1; i < 8; ++i) |
| { |
| do_test (i, 2 * i, (8 << i), (8 << i) + 256, 127); |
| do_test (2 * i, i, (8 << i), (8 << i) + 256, 255); |
| do_test (i, i, (8 << i), (8 << i) + 256, 127); |
| do_test (i, i, (8 << i), (8 << i) + 256, 255); |
| } |
| |
| for (i = 0; i < 16; ++i) |
| { |
| do_test (0, 0, i, i, 127); |
| do_test (0, 0, i, i + 2, 255); |
| do_test (0, i, i, i + 3, 127); |
| do_test (i, 0, i, i + 4, 255); |
| } |
| |
| for (i = 1; i < 8; ++i) |
| { |
| do_test (0, 0, 8 << i, (8 << i) - 15, 127); |
| do_test (8 - i, 2 * i, (8 << i), (8 << i) + 5, 127); |
| } |
| |
| for (i = 1; i < 8; ++i) |
| { |
| do_test (i, 2 * i, (8 << i), (8 << i) + i, 127); |
| do_test (2 * i, i, (8 << i), (8 << i) + (i - 1), 255); |
| do_test (i, i, (8 << i), (8 << i) + i + 2, 127); |
| do_test (i, i, (8 << i), (8 << i) + i + 3, 255); |
| } |
| |
| do_random_tests (); |
| return ret; |
| } |
| |
| #include "../test-skeleton.c" |