YR_API int yr_initialize(void)
{
uint32_t def_stack_size = DEFAULT_STACK_SIZE;
int i;
init_count++;
if (init_count > 1)
return ERROR_SUCCESS;
for (i = 0; i < 256; i++)
{
if (i >= 'a' && i <= 'z')
altercase[i] = i - 32;
else if (i >= 'A' && i <= 'Z')
altercase[i] = i + 32;
else
altercase[i] = i;
lowercase[i] = tolower(i);
}
FAIL_ON_ERROR(yr_heap_alloc());
FAIL_ON_ERROR(yr_thread_storage_create(&tidx_key));
FAIL_ON_ERROR(yr_thread_storage_create(&recovery_state_key));
#if defined HAVE_LIBCRYPTO && OPENSSL_VERSION_NUMBER < 0x10100000L
openssl_locks = (YR_MUTEX*) OPENSSL_malloc(
CRYPTO_num_locks() * sizeof(YR_MUTEX));
for (i = 0; i < CRYPTO_num_locks(); i++)
yr_mutex_create(&openssl_locks[i]);
CRYPTO_set_id_callback(thread_id);
CRYPTO_set_locking_callback(locking_function);
#endif
FAIL_ON_ERROR(yr_re_initialize());
FAIL_ON_ERROR(yr_modules_initialize());
// Initialize default configuration options
FAIL_ON_ERROR(yr_set_configuration(YR_CONFIG_STACK_SIZE, &def_stack_size));
return ERROR_SUCCESS;
}
YR_API int yr_compiler_get_rules(
YR_COMPILER* compiler,
YR_RULES** rules)
{
YR_RULES* yara_rules;
YARA_RULES_FILE_HEADER* rules_file_header;
*rules = NULL;
if (compiler->compiled_rules_arena == NULL)
FAIL_ON_ERROR(_yr_compiler_compile_rules(compiler));
yara_rules = (YR_RULES*) yr_malloc(sizeof(YR_RULES));
if (yara_rules == NULL)
return ERROR_INSUFICIENT_MEMORY;
FAIL_ON_ERROR_WITH_CLEANUP(
yr_arena_duplicate(compiler->compiled_rules_arena, &yara_rules->arena),
yr_free(yara_rules));
rules_file_header = (YARA_RULES_FILE_HEADER*) yr_arena_base_address(
yara_rules->arena);
yara_rules->externals_list_head = rules_file_header->externals_list_head;
yara_rules->rules_list_head = rules_file_header->rules_list_head;
yara_rules->match_table = rules_file_header->match_table;
yara_rules->transition_table = rules_file_header->transition_table;
yara_rules->code_start = rules_file_header->code_start;
yara_rules->tidx_mask = 0;
FAIL_ON_ERROR_WITH_CLEANUP(
yr_mutex_create(&yara_rules->mutex),
// cleanup
yr_arena_destroy(yara_rules->arena);
yr_free(yara_rules));
*rules = yara_rules;
return ERROR_SUCCESS;
}
