diff options
Diffstat (limited to 'test/break-loader.c')
| -rw-r--r-- | test/break-loader.c | 762 |
1 files changed, 0 insertions, 762 deletions
diff --git a/test/break-loader.c b/test/break-loader.c deleted file mode 100644 index dca6e428..00000000 --- a/test/break-loader.c +++ /dev/null @@ -1,762 +0,0 @@ -/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ -/* dbus-break-loader.c Program to find byte streams that break the message loader - * - * Copyright (C) 2003 Red Hat Inc. - * - * Licensed under the Academic Free License version 2.1 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * - */ - -#include <config.h> -#include <dbus/dbus.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <fcntl.h> -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <errno.h> -#include <sys/wait.h> -#include <string.h> - -#include <dbus/dbus-string.h> -#include <dbus/dbus-internals.h> -#include <dbus/dbus-test.h> -#include <dbus/dbus-marshal-basic.h> - -static DBusString failure_dir; -static int total_attempts; -static int failures_this_iteration; - -static int -random_int_in_range (int start, - int end) -{ - /* such elegant math */ - double gap; - double v_double; - int v; - - if (start == end) - return start; - - _dbus_assert (end > start); - - gap = end - start - 1; /* -1 to not include "end" */ - v_double = ((double)start) + (((double)rand ())/RAND_MAX) * gap; - if (v_double < 0.0) - v = (v_double - 0.5); - else - v = (v_double + 0.5); - - if (v < start) - { - fprintf (stderr, "random_int_in_range() generated %d for range [%d,%d)\n", - v, start, end); - v = start; - } - else if (v >= end) - { - fprintf (stderr, "random_int_in_range() generated %d for range [%d,%d)\n", - v, start, end); - v = end - 1; - } - - /* printf (" %d of [%d,%d)\n", v, start, end); */ - - return v; -} - -static dbus_bool_t -try_mutated_data (const DBusString *data) -{ - int pid; - - total_attempts += 1; - /* printf (" attempt %d\n", total_attempts); */ - - pid = fork (); - - if (pid < 0) - { - fprintf (stderr, "fork() failed: %s\n", - strerror (errno)); - exit (1); - return FALSE; - } - - if (pid == 0) - { - /* Child, try loading the data */ - if (!dbus_internal_do_not_use_try_message_data (data, _DBUS_MESSAGE_UNKNOWN)) - exit (1); - else - exit (0); - } - else - { - /* Parent, wait for child */ - int status; - DBusString filename; - dbus_bool_t failed; - - if (waitpid (pid, &status, 0) < 0) - { - fprintf (stderr, "waitpid() failed: %s\n", strerror (errno)); - exit (1); - return FALSE; - } - - failed = FALSE; - - if (!_dbus_string_init (&filename) || - !_dbus_string_copy (&failure_dir, 0, - &filename, 0) || - !_dbus_string_append_byte (&filename, '/')) - { - fprintf (stderr, "out of memory\n"); - exit (1); - } - - _dbus_string_append_int (&filename, total_attempts); - - if (WIFEXITED (status)) - { - if (WEXITSTATUS (status) != 0) - { - _dbus_string_append (&filename, "-exited-"); - _dbus_string_append_int (&filename, WEXITSTATUS (status)); - failed = TRUE; - } - } - else if (WIFSIGNALED (status)) - { - _dbus_string_append (&filename, "signaled-"); - _dbus_string_append_int (&filename, WTERMSIG (status)); - failed = TRUE; - } - - if (failed) - { - DBusError error; - - _dbus_string_append (&filename, ".message-raw"); - - printf ("Child failed, writing %s\n", _dbus_string_get_const_data (&filename)); - - dbus_error_init (&error); - if (!_dbus_string_save_to_file (data, &filename, FALSE, &error)) - { - fprintf (stderr, "Failed to save failed message data: %s\n", - error.message); - dbus_error_free (&error); - exit (1); /* so we can see the seed that was printed out */ - } - - failures_this_iteration += 1; - - _dbus_string_free (&filename); - - return FALSE; - } - else - { - _dbus_string_free (&filename); - return TRUE; - } - } - - _dbus_assert_not_reached ("should not be reached"); - return TRUE; -} - -static void -randomly_shorten_or_lengthen (const DBusString *orig_data, - DBusString *mutated) -{ - int delta; - - if (orig_data != mutated) - { - _dbus_string_set_length (mutated, 0); - - if (!_dbus_string_copy (orig_data, 0, mutated, 0)) - _dbus_assert_not_reached ("out of mem"); - } - - if (_dbus_string_get_length (mutated) == 0) - delta = random_int_in_range (0, 10); - else - delta = random_int_in_range (- _dbus_string_get_length (mutated), - _dbus_string_get_length (mutated) * 3); - - if (delta < 0) - _dbus_string_shorten (mutated, - delta); - else if (delta > 0) - { - int i = 0; - - i = _dbus_string_get_length (mutated); - if (!_dbus_string_lengthen (mutated, delta)) - _dbus_assert_not_reached ("couldn't lengthen string"); - - while (i < _dbus_string_get_length (mutated)) - { - _dbus_string_set_byte (mutated, - i, - random_int_in_range (0, 256)); - ++i; - } - } -} - -static void -randomly_change_one_byte (const DBusString *orig_data, - DBusString *mutated) -{ - int i; - - if (orig_data != mutated) - { - _dbus_string_set_length (mutated, 0); - - if (!_dbus_string_copy (orig_data, 0, mutated, 0)) - _dbus_assert_not_reached ("out of mem"); - } - - if (_dbus_string_get_length (mutated) == 0) - return; - - i = random_int_in_range (0, _dbus_string_get_length (mutated)); - - _dbus_string_set_byte (mutated, i, - random_int_in_range (0, 256)); -} - -static void -randomly_remove_one_byte (const DBusString *orig_data, - DBusString *mutated) -{ - int i; - - if (orig_data != mutated) - { - _dbus_string_set_length (mutated, 0); - - if (!_dbus_string_copy (orig_data, 0, mutated, 0)) - _dbus_assert_not_reached ("out of mem"); - } - - if (_dbus_string_get_length (mutated) == 0) - return; - - i = random_int_in_range (0, _dbus_string_get_length (mutated)); - - _dbus_string_delete (mutated, i, 1); -} - - -static void -randomly_add_one_byte (const DBusString *orig_data, - DBusString *mutated) -{ - int i; - - if (orig_data != mutated) - { - _dbus_string_set_length (mutated, 0); - - if (!_dbus_string_copy (orig_data, 0, mutated, 0)) - _dbus_assert_not_reached ("out of mem"); - } - - i = random_int_in_range (0, _dbus_string_get_length (mutated)); - - _dbus_string_insert_bytes (mutated, i, 1, - random_int_in_range (0, 256)); -} - -static void -randomly_modify_length (const DBusString *orig_data, - DBusString *mutated) -{ - int i; - int byte_order; - const char *d; - dbus_uint32_t orig; - int delta; - - if (orig_data != mutated) - { - _dbus_string_set_length (mutated, 0); - - if (!_dbus_string_copy (orig_data, 0, mutated, 0)) - _dbus_assert_not_reached ("out of mem"); - } - - if (_dbus_string_get_length (mutated) < 12) - return; - - d = _dbus_string_get_const_data (mutated); - - if (!(*d == DBUS_LITTLE_ENDIAN || - *d == DBUS_BIG_ENDIAN)) - return; - - byte_order = *d; - - i = random_int_in_range (4, _dbus_string_get_length (mutated) - 8); - i = _DBUS_ALIGN_VALUE (i, 4); - - orig = _dbus_demarshal_uint32 (mutated, byte_order, i, NULL); - - delta = random_int_in_range (-10, 10); - - _dbus_marshal_set_uint32 (mutated, byte_order, i, - (unsigned) (orig + delta)); -} - -static void -randomly_set_extreme_ints (const DBusString *orig_data, - DBusString *mutated) -{ - int i; - int byte_order; - const char *d; - dbus_uint32_t orig; - static int which = 0; - unsigned int extreme_ints[] = { - _DBUS_INT_MAX, - _DBUS_UINT_MAX, - _DBUS_INT_MAX - 1, - _DBUS_UINT_MAX - 1, - _DBUS_INT_MAX - 2, - _DBUS_UINT_MAX - 2, - _DBUS_INT_MAX - 17, - _DBUS_UINT_MAX - 17, - _DBUS_INT_MAX / 2, - _DBUS_INT_MAX / 3, - _DBUS_UINT_MAX / 2, - _DBUS_UINT_MAX / 3, - 0, 1, 2, 3, - (unsigned int) -1, - (unsigned int) -2, - (unsigned int) -3 - }; - - if (orig_data != mutated) - { - _dbus_string_set_length (mutated, 0); - - if (!_dbus_string_copy (orig_data, 0, mutated, 0)) - _dbus_assert_not_reached ("out of mem"); - } - - if (_dbus_string_get_length (mutated) < 12) - return; - - d = _dbus_string_get_const_data (mutated); - - if (!(*d == DBUS_LITTLE_ENDIAN || - *d == DBUS_BIG_ENDIAN)) - return; - - byte_order = *d; - - i = random_int_in_range (4, _dbus_string_get_length (mutated) - 8); - i = _DBUS_ALIGN_VALUE (i, 4); - - orig = _dbus_demarshal_uint32 (mutated, byte_order, i, NULL); - - which = random_int_in_range (0, _DBUS_N_ELEMENTS (extreme_ints)); - - _dbus_assert (which >= 0); - _dbus_assert (which < _DBUS_N_ELEMENTS (extreme_ints)); - - _dbus_marshal_set_uint32 (mutated, byte_order, i, - extreme_ints[which]); -} - -static int -random_type (void) -{ - const char types[] = { - DBUS_TYPE_INVALID, - DBUS_TYPE_NIL, - DBUS_TYPE_BYTE, - DBUS_TYPE_BOOLEAN, - DBUS_TYPE_INT32, - DBUS_TYPE_UINT32, - DBUS_TYPE_INT64, - DBUS_TYPE_UINT64, - DBUS_TYPE_DOUBLE, - DBUS_TYPE_STRING, - DBUS_TYPE_CUSTOM, - DBUS_TYPE_ARRAY, - DBUS_TYPE_DICT, - DBUS_TYPE_OBJECT_PATH - }; - - _dbus_assert (_DBUS_N_ELEMENTS (types) == DBUS_NUMBER_OF_TYPES + 1); - - return types[ random_int_in_range (0, _DBUS_N_ELEMENTS (types)) ]; -} - -static void -randomly_change_one_type (const DBusString *orig_data, - DBusString *mutated) -{ - int i; - int len; - - if (orig_data != mutated) - { - _dbus_string_set_length (mutated, 0); - - if (!_dbus_string_copy (orig_data, 0, mutated, 0)) - _dbus_assert_not_reached ("out of mem"); - } - - if (_dbus_string_get_length (mutated) == 0) - return; - - len = _dbus_string_get_length (mutated); - i = random_int_in_range (0, len); - - /* Look for a type starting at a random location, - * and replace with a different type - */ - while (i < len) - { - int b; - b = _dbus_string_get_byte (mutated, i); - if (dbus_type_is_valid (b)) - { - _dbus_string_set_byte (mutated, i, random_type ()); - return; - } - ++i; - } -} - -static int times_we_did_each_thing[7] = { 0, }; - -static void -randomly_do_n_things (const DBusString *orig_data, - DBusString *mutated, - int n) -{ - int i; - void (* functions[]) (const DBusString *orig_data, - DBusString *mutated) = - { - randomly_shorten_or_lengthen, - randomly_change_one_byte, - randomly_add_one_byte, - randomly_remove_one_byte, - randomly_modify_length, - randomly_set_extreme_ints, - randomly_change_one_type - }; - - _dbus_string_set_length (mutated, 0); - - if (!_dbus_string_copy (orig_data, 0, mutated, 0)) - _dbus_assert_not_reached ("out of mem"); - - i = 0; - while (i < n) - { - int which; - - which = random_int_in_range (0, _DBUS_N_ELEMENTS (functions)); - - (* functions[which]) (mutated, mutated); - times_we_did_each_thing[which] += 1; - - ++i; - } -} - -static dbus_bool_t -find_breaks_based_on (const DBusString *filename, - dbus_bool_t is_raw, - DBusMessageValidity expected_validity, - void *data) -{ - DBusString orig_data; - DBusString mutated; - const char *filename_c; - dbus_bool_t retval; - int i; - - filename_c = _dbus_string_get_const_data (filename); - - retval = FALSE; - - if (!_dbus_string_init (&orig_data)) - _dbus_assert_not_reached ("could not allocate string"); - - if (!_dbus_string_init (&mutated)) - _dbus_assert_not_reached ("could not allocate string"); - - if (!dbus_internal_do_not_use_load_message_file (filename, is_raw, - &orig_data)) - { - fprintf (stderr, "could not load file %s\n", filename_c); - goto failed; - } - - printf (" changing one random byte 100 times\n"); - i = 0; - while (i < 100) - { - randomly_change_one_byte (&orig_data, &mutated); - try_mutated_data (&mutated); - - ++i; - } - - printf (" changing length 50 times\n"); - i = 0; - while (i < 50) - { - randomly_modify_length (&orig_data, &mutated); - try_mutated_data (&mutated); - - ++i; - } - - printf (" removing one byte 50 times\n"); - i = 0; - while (i < 50) - { - randomly_remove_one_byte (&orig_data, &mutated); - try_mutated_data (&mutated); - - ++i; - } - - printf (" adding one byte 50 times\n"); - i = 0; - while (i < 50) - { - randomly_add_one_byte (&orig_data, &mutated); - try_mutated_data (&mutated); - - ++i; - } - - printf (" changing ints to boundary values 50 times\n"); - i = 0; - while (i < 50) - { - randomly_set_extreme_ints (&orig_data, &mutated); - try_mutated_data (&mutated); - - ++i; - } - - printf (" changing typecodes 50 times\n"); - i = 0; - while (i < 50) - { - randomly_change_one_type (&orig_data, &mutated); - try_mutated_data (&mutated); - - ++i; - } - - printf (" changing message length 15 times\n"); - i = 0; - while (i < 15) - { - randomly_shorten_or_lengthen (&orig_data, &mutated); - try_mutated_data (&mutated); - - ++i; - } - - printf (" randomly making 2 of above modifications 42 times\n"); - i = 0; - while (i < 42) - { - randomly_do_n_things (&orig_data, &mutated, 2); - try_mutated_data (&mutated); - - ++i; - } - - printf (" randomly making 3 of above modifications 42 times\n"); - i = 0; - while (i < 42) - { - randomly_do_n_things (&orig_data, &mutated, 3); - try_mutated_data (&mutated); - - ++i; - } - - printf (" randomly making 4 of above modifications 42 times\n"); - i = 0; - while (i < 42) - { - randomly_do_n_things (&orig_data, &mutated, 4); - try_mutated_data (&mutated); - - ++i; - } - - retval = TRUE; - - failed: - - _dbus_string_free (&orig_data); - _dbus_string_free (&mutated); - - /* FALSE means end the whole process */ - return retval; -} - -static unsigned int -get_random_seed (void) -{ - DBusString bytes; - unsigned int seed; - int fd; - const char *s; - - seed = 0; - - if (!_dbus_string_init (&bytes)) - exit (1); - - fd = open ("/dev/urandom", O_RDONLY); - if (fd < 0) - goto use_fallback; - - if (_dbus_read (fd, &bytes, 4) != 4) - goto use_fallback; - - close (fd); - - s = _dbus_string_get_const_data (&bytes); - - seed = * (unsigned int*) s; - goto out; - - use_fallback: - { - long tv_usec; - - fprintf (stderr, "could not open/read /dev/urandom, using current time for seed\n"); - - _dbus_get_monotonic_time (NULL, &tv_usec); - - seed = tv_usec; - } - - out: - _dbus_string_free (&bytes); - - return seed; -} - -int -main (int argc, - char **argv) -{ - const char *test_data_dir; - const char *failure_dir_c; - int total_failures_found; - - if (argc > 1) - test_data_dir = argv[1]; - else - { - fprintf (stderr, "Must specify a top_srcdir/test/data directory\n"); - return 1; - } - - total_failures_found = 0; - total_attempts = 0; - - if (!_dbus_string_init (&failure_dir)) - return 1; - - /* so you can leave it overnight safely */ -#define MAX_FAILURES 1000 - - while (total_failures_found < MAX_FAILURES) - { - unsigned int seed; - - failures_this_iteration = 0; - - seed = get_random_seed (); - - _dbus_string_set_length (&failure_dir, 0); - - if (!_dbus_string_append (&failure_dir, "failures-")) - return 1; - - if (!_dbus_string_append_uint (&failure_dir, seed)) - return 1; - - failure_dir_c = _dbus_string_get_const_data (&failure_dir); - - if (mkdir (failure_dir_c, 0700) < 0) - { - if (errno != EEXIST) - fprintf (stderr, "didn't mkdir %s: %s\n", - failure_dir_c, strerror (errno)); - } - - printf ("next seed = %u \ttotal failures %d of %d attempts\n", - seed, total_failures_found, total_attempts); - - srand (seed); - - if (!dbus_internal_do_not_use_foreach_message_file (test_data_dir, - find_breaks_based_on, - NULL)) - { - fprintf (stderr, "fatal error iterating over message files\n"); - rmdir (failure_dir_c); - return 1; - } - - printf (" did %d random mutations: %d %d %d %d %d %d %d\n", - _DBUS_N_ELEMENTS (times_we_did_each_thing), - times_we_did_each_thing[0], - times_we_did_each_thing[1], - times_we_did_each_thing[2], - times_we_did_each_thing[3], - times_we_did_each_thing[4], - times_we_did_each_thing[5], - times_we_did_each_thing[6]); - - printf ("Found %d failures with seed %u stored in %s\n", - failures_this_iteration, seed, failure_dir_c); - - total_failures_found += failures_this_iteration; - - rmdir (failure_dir_c); /* does nothing if non-empty */ - } - - return 0; -} |