/Zend/zend_execute_API.c
C | 1606 lines | 1400 code | 131 blank | 75 comment | 181 complexity | d6d808012381dc277ec781f5b8e5fcd5 MD5 | raw file
Possible License(s): BSD-2-Clause, BSD-3-Clause, MPL-2.0-no-copyleft-exception, LGPL-2.1
- /*
- +----------------------------------------------------------------------+
- | Zend Engine |
- +----------------------------------------------------------------------+
- | Copyright (c) Zend Technologies Ltd. (http://www.zend.com) |
- +----------------------------------------------------------------------+
- | This source file is subject to version 2.00 of the Zend license, |
- | that is bundled with this package in the file LICENSE, and is |
- | available through the world-wide-web at the following url: |
- | http://www.zend.com/license/2_00.txt. |
- | If you did not receive a copy of the Zend license and are unable to |
- | obtain it through the world-wide-web, please send a note to |
- | license@zend.com so we can mail you a copy immediately. |
- +----------------------------------------------------------------------+
- | Authors: Andi Gutmans <andi@php.net> |
- | Zeev Suraski <zeev@php.net> |
- | Dmitry Stogov <dmitry@php.net> |
- +----------------------------------------------------------------------+
- */
- #include <stdio.h>
- #include <signal.h>
- #include "zend.h"
- #include "zend_compile.h"
- #include "zend_execute.h"
- #include "zend_API.h"
- #include "zend_stack.h"
- #include "zend_constants.h"
- #include "zend_extensions.h"
- #include "zend_exceptions.h"
- #include "zend_closures.h"
- #include "zend_generators.h"
- #include "zend_vm.h"
- #include "zend_float.h"
- #include "zend_weakrefs.h"
- #include "zend_inheritance.h"
- #ifdef HAVE_SYS_TIME_H
- #include <sys/time.h>
- #endif
- #ifdef HAVE_UNISTD_H
- #include <unistd.h>
- #endif
- ZEND_API void (*zend_execute_ex)(zend_execute_data *execute_data);
- ZEND_API void (*zend_execute_internal)(zend_execute_data *execute_data, zval *return_value);
- /* true globals */
- ZEND_API const zend_fcall_info empty_fcall_info = {0};
- ZEND_API const zend_fcall_info_cache empty_fcall_info_cache = { NULL, NULL, NULL, NULL };
- #ifdef ZEND_WIN32
- ZEND_TLS HANDLE tq_timer = NULL;
- #endif
- #if 0&&ZEND_DEBUG
- static void (*original_sigsegv_handler)(int);
- static void zend_handle_sigsegv(int dummy) /* {{{ */
- {
- fflush(stdout);
- fflush(stderr);
- if (original_sigsegv_handler == zend_handle_sigsegv) {
- signal(SIGSEGV, original_sigsegv_handler);
- } else {
- signal(SIGSEGV, SIG_DFL);
- }
- {
- fprintf(stderr, "SIGSEGV caught on opcode %d on opline %d of %s() at %s:%d\n\n",
- active_opline->opcode,
- active_opline-EG(active_op_array)->opcodes,
- get_active_function_name(),
- zend_get_executed_filename(),
- zend_get_executed_lineno());
- /* See http://support.microsoft.com/kb/190351 */
- #ifdef ZEND_WIN32
- fflush(stderr);
- #endif
- }
- if (original_sigsegv_handler!=zend_handle_sigsegv) {
- original_sigsegv_handler(dummy);
- }
- }
- /* }}} */
- #endif
- static void zend_extension_activator(zend_extension *extension) /* {{{ */
- {
- if (extension->activate) {
- extension->activate();
- }
- }
- /* }}} */
- static void zend_extension_deactivator(zend_extension *extension) /* {{{ */
- {
- if (extension->deactivate) {
- extension->deactivate();
- }
- }
- /* }}} */
- static int clean_non_persistent_constant_full(zval *zv) /* {{{ */
- {
- zend_constant *c = Z_PTR_P(zv);
- return (ZEND_CONSTANT_FLAGS(c) & CONST_PERSISTENT) ? ZEND_HASH_APPLY_KEEP : ZEND_HASH_APPLY_REMOVE;
- }
- /* }}} */
- static int clean_non_persistent_function_full(zval *zv) /* {{{ */
- {
- zend_function *function = Z_PTR_P(zv);
- return (function->type == ZEND_INTERNAL_FUNCTION) ? ZEND_HASH_APPLY_KEEP : ZEND_HASH_APPLY_REMOVE;
- }
- /* }}} */
- static int clean_non_persistent_class_full(zval *zv) /* {{{ */
- {
- zend_class_entry *ce = Z_PTR_P(zv);
- return (ce->type == ZEND_INTERNAL_CLASS) ? ZEND_HASH_APPLY_KEEP : ZEND_HASH_APPLY_REMOVE;
- }
- /* }}} */
- void init_executor(void) /* {{{ */
- {
- zend_init_fpu();
- ZVAL_NULL(&EG(uninitialized_zval));
- ZVAL_ERROR(&EG(error_zval));
- /* destroys stack frame, therefore makes core dumps worthless */
- #if 0&&ZEND_DEBUG
- original_sigsegv_handler = signal(SIGSEGV, zend_handle_sigsegv);
- #endif
- EG(symtable_cache_ptr) = EG(symtable_cache);
- EG(symtable_cache_limit) = EG(symtable_cache) + SYMTABLE_CACHE_SIZE;
- EG(no_extensions) = 0;
- EG(function_table) = CG(function_table);
- EG(class_table) = CG(class_table);
- EG(in_autoload) = NULL;
- EG(autoload_func) = NULL;
- EG(error_handling) = EH_NORMAL;
- EG(flags) = EG_FLAGS_INITIAL;
- zend_vm_stack_init();
- zend_hash_init(&EG(symbol_table), 64, NULL, ZVAL_PTR_DTOR, 0);
- zend_llist_apply(&zend_extensions, (llist_apply_func_t) zend_extension_activator);
- zend_hash_init(&EG(included_files), 8, NULL, NULL, 0);
- EG(ticks_count) = 0;
- ZVAL_UNDEF(&EG(user_error_handler));
- ZVAL_UNDEF(&EG(user_exception_handler));
- EG(current_execute_data) = NULL;
- zend_stack_init(&EG(user_error_handlers_error_reporting), sizeof(int));
- zend_stack_init(&EG(user_error_handlers), sizeof(zval));
- zend_stack_init(&EG(user_exception_handlers), sizeof(zval));
- zend_objects_store_init(&EG(objects_store), 1024);
- EG(full_tables_cleanup) = 0;
- EG(vm_interrupt) = 0;
- EG(timed_out) = 0;
- EG(exception) = NULL;
- EG(prev_exception) = NULL;
- EG(fake_scope) = NULL;
- EG(trampoline).common.function_name = NULL;
- EG(ht_iterators_count) = sizeof(EG(ht_iterators_slots)) / sizeof(HashTableIterator);
- EG(ht_iterators_used) = 0;
- EG(ht_iterators) = EG(ht_iterators_slots);
- memset(EG(ht_iterators), 0, sizeof(EG(ht_iterators_slots)));
- EG(persistent_constants_count) = EG(zend_constants)->nNumUsed;
- EG(persistent_functions_count) = EG(function_table)->nNumUsed;
- EG(persistent_classes_count) = EG(class_table)->nNumUsed;
- EG(get_gc_buffer).start = EG(get_gc_buffer).end = EG(get_gc_buffer).cur = NULL;
- zend_weakrefs_init();
- EG(active) = 1;
- }
- /* }}} */
- static int zval_call_destructor(zval *zv) /* {{{ */
- {
- if (Z_TYPE_P(zv) == IS_INDIRECT) {
- zv = Z_INDIRECT_P(zv);
- }
- if (Z_TYPE_P(zv) == IS_OBJECT && Z_REFCOUNT_P(zv) == 1) {
- return ZEND_HASH_APPLY_REMOVE;
- } else {
- return ZEND_HASH_APPLY_KEEP;
- }
- }
- /* }}} */
- static void zend_unclean_zval_ptr_dtor(zval *zv) /* {{{ */
- {
- if (Z_TYPE_P(zv) == IS_INDIRECT) {
- zv = Z_INDIRECT_P(zv);
- }
- i_zval_ptr_dtor(zv);
- }
- /* }}} */
- static ZEND_COLD void zend_throw_or_error(int fetch_type, zend_class_entry *exception_ce, const char *format, ...) /* {{{ */
- {
- va_list va;
- char *message = NULL;
- va_start(va, format);
- zend_vspprintf(&message, 0, format, va);
- if (fetch_type & ZEND_FETCH_CLASS_EXCEPTION) {
- zend_throw_error(exception_ce, "%s", message);
- } else {
- zend_error(E_ERROR, "%s", message);
- }
- efree(message);
- va_end(va);
- }
- /* }}} */
- void shutdown_destructors(void) /* {{{ */
- {
- if (CG(unclean_shutdown)) {
- EG(symbol_table).pDestructor = zend_unclean_zval_ptr_dtor;
- }
- zend_try {
- uint32_t symbols;
- do {
- symbols = zend_hash_num_elements(&EG(symbol_table));
- zend_hash_reverse_apply(&EG(symbol_table), (apply_func_t) zval_call_destructor);
- } while (symbols != zend_hash_num_elements(&EG(symbol_table)));
- zend_objects_store_call_destructors(&EG(objects_store));
- } zend_catch {
- /* if we couldn't destruct cleanly, mark all objects as destructed anyway */
- zend_objects_store_mark_destructed(&EG(objects_store));
- } zend_end_try();
- }
- /* }}} */
- void shutdown_executor(void) /* {{{ */
- {
- zend_string *key;
- zval *zv;
- #if ZEND_DEBUG
- zend_bool fast_shutdown = 0;
- #else
- zend_bool fast_shutdown = is_zend_mm() && !EG(full_tables_cleanup);
- #endif
- zend_try {
- zend_llist_destroy(&CG(open_files));
- } zend_end_try();
- EG(flags) |= EG_FLAGS_IN_RESOURCE_SHUTDOWN;
- zend_try {
- zend_close_rsrc_list(&EG(regular_list));
- } zend_end_try();
- /* No PHP callback functions should be called after this point. */
- EG(active) = 0;
- if (!fast_shutdown) {
- zend_hash_graceful_reverse_destroy(&EG(symbol_table));
- /* Release static properties and static variables prior to the final GC run,
- * as they may hold GC roots. */
- ZEND_HASH_REVERSE_FOREACH_VAL(EG(function_table), zv) {
- zend_op_array *op_array = Z_PTR_P(zv);
- if (op_array->type == ZEND_INTERNAL_FUNCTION) {
- break;
- }
- if (op_array->static_variables) {
- HashTable *ht = ZEND_MAP_PTR_GET(op_array->static_variables_ptr);
- if (ht) {
- ZEND_ASSERT(GC_REFCOUNT(ht) == 1);
- zend_array_destroy(ht);
- ZEND_MAP_PTR_SET(op_array->static_variables_ptr, NULL);
- }
- }
- } ZEND_HASH_FOREACH_END();
- ZEND_HASH_REVERSE_FOREACH_VAL(EG(class_table), zv) {
- zend_class_entry *ce = Z_PTR_P(zv);
- if (ce->default_static_members_count) {
- zend_cleanup_internal_class_data(ce);
- }
- if (ce->ce_flags & ZEND_HAS_STATIC_IN_METHODS) {
- zend_op_array *op_array;
- ZEND_HASH_FOREACH_PTR(&ce->function_table, op_array) {
- if (op_array->type == ZEND_USER_FUNCTION) {
- if (op_array->static_variables) {
- HashTable *ht = ZEND_MAP_PTR_GET(op_array->static_variables_ptr);
- if (ht) {
- zend_array_release(ht);
- ZEND_MAP_PTR_SET(op_array->static_variables_ptr, NULL);
- }
- }
- }
- } ZEND_HASH_FOREACH_END();
- }
- } ZEND_HASH_FOREACH_END();
- /* Also release error and exception handlers, which may hold objects. */
- if (Z_TYPE(EG(user_error_handler)) != IS_UNDEF) {
- zval_ptr_dtor(&EG(user_error_handler));
- ZVAL_UNDEF(&EG(user_error_handler));
- }
- if (Z_TYPE(EG(user_exception_handler)) != IS_UNDEF) {
- zval_ptr_dtor(&EG(user_exception_handler));
- ZVAL_UNDEF(&EG(user_exception_handler));
- }
- zend_stack_clean(&EG(user_error_handlers_error_reporting), NULL, 1);
- zend_stack_clean(&EG(user_error_handlers), (void (*)(void *))ZVAL_PTR_DTOR, 1);
- zend_stack_clean(&EG(user_exception_handlers), (void (*)(void *))ZVAL_PTR_DTOR, 1);
- #if ZEND_DEBUG
- if (gc_enabled() && !CG(unclean_shutdown)) {
- gc_collect_cycles();
- }
- #endif
- }
- zend_objects_store_free_object_storage(&EG(objects_store), fast_shutdown);
- zend_weakrefs_shutdown();
- zend_try {
- zend_llist_apply(&zend_extensions, (llist_apply_func_t) zend_extension_deactivator);
- } zend_end_try();
- if (fast_shutdown) {
- /* Fast Request Shutdown
- * =====================
- * Zend Memory Manager frees memory by its own. We don't have to free
- * each allocated block separately.
- */
- zend_hash_discard(EG(zend_constants), EG(persistent_constants_count));
- zend_hash_discard(EG(function_table), EG(persistent_functions_count));
- zend_hash_discard(EG(class_table), EG(persistent_classes_count));
- zend_cleanup_internal_classes();
- } else {
- zend_vm_stack_destroy();
- if (EG(full_tables_cleanup)) {
- zend_hash_reverse_apply(EG(zend_constants), clean_non_persistent_constant_full);
- zend_hash_reverse_apply(EG(function_table), clean_non_persistent_function_full);
- zend_hash_reverse_apply(EG(class_table), clean_non_persistent_class_full);
- } else {
- ZEND_HASH_REVERSE_FOREACH_STR_KEY_VAL(EG(zend_constants), key, zv) {
- zend_constant *c = Z_PTR_P(zv);
- if (_idx == EG(persistent_constants_count)) {
- break;
- }
- zval_ptr_dtor_nogc(&c->value);
- if (c->name) {
- zend_string_release_ex(c->name, 0);
- }
- efree(c);
- zend_string_release_ex(key, 0);
- } ZEND_HASH_FOREACH_END_DEL();
- ZEND_HASH_REVERSE_FOREACH_STR_KEY_VAL(EG(function_table), key, zv) {
- zend_function *func = Z_PTR_P(zv);
- if (_idx == EG(persistent_functions_count)) {
- break;
- }
- destroy_op_array(&func->op_array);
- zend_string_release_ex(key, 0);
- } ZEND_HASH_FOREACH_END_DEL();
- ZEND_HASH_REVERSE_FOREACH_STR_KEY_VAL(EG(class_table), key, zv) {
- if (_idx == EG(persistent_classes_count)) {
- break;
- }
- destroy_zend_class(zv);
- zend_string_release_ex(key, 0);
- } ZEND_HASH_FOREACH_END_DEL();
- }
- while (EG(symtable_cache_ptr) > EG(symtable_cache)) {
- EG(symtable_cache_ptr)--;
- zend_hash_destroy(*EG(symtable_cache_ptr));
- FREE_HASHTABLE(*EG(symtable_cache_ptr));
- }
- zend_hash_destroy(&EG(included_files));
- zend_stack_destroy(&EG(user_error_handlers_error_reporting));
- zend_stack_destroy(&EG(user_error_handlers));
- zend_stack_destroy(&EG(user_exception_handlers));
- zend_objects_store_destroy(&EG(objects_store));
- if (EG(in_autoload)) {
- zend_hash_destroy(EG(in_autoload));
- FREE_HASHTABLE(EG(in_autoload));
- }
- if (EG(ht_iterators) != EG(ht_iterators_slots)) {
- efree(EG(ht_iterators));
- }
- }
- #if ZEND_DEBUG
- if (EG(ht_iterators_used) && !CG(unclean_shutdown)) {
- zend_error(E_WARNING, "Leaked %" PRIu32 " hashtable iterators", EG(ht_iterators_used));
- }
- #endif
- EG(ht_iterators_used) = 0;
- zend_shutdown_fpu();
- }
- /* }}} */
- /* return class name and "::" or "". */
- ZEND_API const char *get_active_class_name(const char **space) /* {{{ */
- {
- zend_function *func;
- if (!zend_is_executing()) {
- if (space) {
- *space = "";
- }
- return "";
- }
- func = EG(current_execute_data)->func;
- switch (func->type) {
- case ZEND_USER_FUNCTION:
- case ZEND_INTERNAL_FUNCTION:
- {
- zend_class_entry *ce = func->common.scope;
- if (space) {
- *space = ce ? "::" : "";
- }
- return ce ? ZSTR_VAL(ce->name) : "";
- }
- default:
- if (space) {
- *space = "";
- }
- return "";
- }
- }
- /* }}} */
- ZEND_API const char *get_active_function_name(void) /* {{{ */
- {
- zend_function *func;
- if (!zend_is_executing()) {
- return NULL;
- }
- func = EG(current_execute_data)->func;
- switch (func->type) {
- case ZEND_USER_FUNCTION: {
- zend_string *function_name = func->common.function_name;
- if (function_name) {
- return ZSTR_VAL(function_name);
- } else {
- return "main";
- }
- }
- break;
- case ZEND_INTERNAL_FUNCTION:
- return ZSTR_VAL(func->common.function_name);
- break;
- default:
- return NULL;
- }
- }
- /* }}} */
- ZEND_API const char *get_active_function_arg_name(uint32_t arg_num) /* {{{ */
- {
- zend_function *func;
- if (!zend_is_executing()) {
- return NULL;
- }
- func = EG(current_execute_data)->func;
- return get_function_arg_name(func, arg_num);
- }
- /* }}} */
- ZEND_API const char *get_function_arg_name(const zend_function *func, uint32_t arg_num) /* {{{ */
- {
- if (!func || func->common.num_args < arg_num) {
- return NULL;
- }
- switch (func->type) {
- case ZEND_USER_FUNCTION:
- return ZSTR_VAL(func->common.arg_info[arg_num - 1].name);
- case ZEND_INTERNAL_FUNCTION:
- return ((zend_internal_arg_info*) func->common.arg_info)[arg_num - 1].name;
- default:
- return NULL;
- }
- }
- /* }}} */
- ZEND_API const char *zend_get_executed_filename(void) /* {{{ */
- {
- zend_execute_data *ex = EG(current_execute_data);
- while (ex && (!ex->func || !ZEND_USER_CODE(ex->func->type))) {
- ex = ex->prev_execute_data;
- }
- if (ex) {
- return ZSTR_VAL(ex->func->op_array.filename);
- } else {
- return "[no active file]";
- }
- }
- /* }}} */
- ZEND_API zend_string *zend_get_executed_filename_ex(void) /* {{{ */
- {
- zend_execute_data *ex = EG(current_execute_data);
- while (ex && (!ex->func || !ZEND_USER_CODE(ex->func->type))) {
- ex = ex->prev_execute_data;
- }
- if (ex) {
- return ex->func->op_array.filename;
- } else {
- return NULL;
- }
- }
- /* }}} */
- ZEND_API uint32_t zend_get_executed_lineno(void) /* {{{ */
- {
- zend_execute_data *ex = EG(current_execute_data);
- while (ex && (!ex->func || !ZEND_USER_CODE(ex->func->type))) {
- ex = ex->prev_execute_data;
- }
- if (ex) {
- if (EG(exception) && ex->opline->opcode == ZEND_HANDLE_EXCEPTION &&
- ex->opline->lineno == 0 && EG(opline_before_exception)) {
- return EG(opline_before_exception)->lineno;
- }
- return ex->opline->lineno;
- } else {
- return 0;
- }
- }
- /* }}} */
- ZEND_API zend_class_entry *zend_get_executed_scope(void) /* {{{ */
- {
- zend_execute_data *ex = EG(current_execute_data);
- while (1) {
- if (!ex) {
- return NULL;
- } else if (ex->func && (ZEND_USER_CODE(ex->func->type) || ex->func->common.scope)) {
- return ex->func->common.scope;
- }
- ex = ex->prev_execute_data;
- }
- }
- /* }}} */
- ZEND_API zend_bool zend_is_executing(void) /* {{{ */
- {
- return EG(current_execute_data) != 0;
- }
- /* }}} */
- ZEND_API int zval_update_constant_ex(zval *p, zend_class_entry *scope) /* {{{ */
- {
- if (Z_TYPE_P(p) == IS_CONSTANT_AST) {
- zend_ast *ast = Z_ASTVAL_P(p);
- if (ast->kind == ZEND_AST_CONSTANT) {
- zend_string *name = zend_ast_get_constant_name(ast);
- zval *zv = zend_get_constant_ex(name, scope, ast->attr);
- if (UNEXPECTED(zv == NULL)) {
- return FAILURE;
- }
- zval_ptr_dtor_nogc(p);
- ZVAL_COPY_OR_DUP(p, zv);
- } else {
- zval tmp;
- if (UNEXPECTED(zend_ast_evaluate(&tmp, ast, scope) != SUCCESS)) {
- return FAILURE;
- }
- zval_ptr_dtor_nogc(p);
- ZVAL_COPY_VALUE(p, &tmp);
- }
- }
- return SUCCESS;
- }
- /* }}} */
- ZEND_API int zval_update_constant(zval *pp) /* {{{ */
- {
- return zval_update_constant_ex(pp, EG(current_execute_data) ? zend_get_executed_scope() : CG(active_class_entry));
- }
- /* }}} */
- int _call_user_function_ex(zval *object, zval *function_name, zval *retval_ptr, uint32_t param_count, zval params[], int no_separation) /* {{{ */
- {
- zend_fcall_info fci;
- fci.size = sizeof(fci);
- fci.object = object ? Z_OBJ_P(object) : NULL;
- ZVAL_COPY_VALUE(&fci.function_name, function_name);
- fci.retval = retval_ptr;
- fci.param_count = param_count;
- fci.params = params;
- fci.no_separation = (zend_bool) no_separation;
- return zend_call_function(&fci, NULL);
- }
- /* }}} */
- int zend_call_function(zend_fcall_info *fci, zend_fcall_info_cache *fci_cache) /* {{{ */
- {
- uint32_t i;
- zend_execute_data *call, dummy_execute_data;
- zend_fcall_info_cache fci_cache_local;
- zend_function *func;
- uint32_t call_info;
- void *object_or_called_scope;
- ZVAL_UNDEF(fci->retval);
- if (!EG(active)) {
- return FAILURE; /* executor is already inactive */
- }
- if (EG(exception)) {
- return FAILURE; /* we would result in an instable executor otherwise */
- }
- ZEND_ASSERT(fci->size == sizeof(zend_fcall_info));
- /* Initialize execute_data */
- if (!EG(current_execute_data)) {
- /* This only happens when we're called outside any execute()'s
- * It shouldn't be strictly necessary to NULL execute_data out,
- * but it may make bugs easier to spot
- */
- memset(&dummy_execute_data, 0, sizeof(zend_execute_data));
- EG(current_execute_data) = &dummy_execute_data;
- } else if (EG(current_execute_data)->func &&
- ZEND_USER_CODE(EG(current_execute_data)->func->common.type) &&
- EG(current_execute_data)->opline->opcode != ZEND_DO_FCALL &&
- EG(current_execute_data)->opline->opcode != ZEND_DO_ICALL &&
- EG(current_execute_data)->opline->opcode != ZEND_DO_UCALL &&
- EG(current_execute_data)->opline->opcode != ZEND_DO_FCALL_BY_NAME) {
- /* Insert fake frame in case of include or magic calls */
- dummy_execute_data = *EG(current_execute_data);
- dummy_execute_data.prev_execute_data = EG(current_execute_data);
- dummy_execute_data.call = NULL;
- dummy_execute_data.opline = NULL;
- dummy_execute_data.func = NULL;
- EG(current_execute_data) = &dummy_execute_data;
- }
- if (!fci_cache || !fci_cache->function_handler) {
- char *error = NULL;
- if (!fci_cache) {
- fci_cache = &fci_cache_local;
- }
- if (!zend_is_callable_ex(&fci->function_name, fci->object, IS_CALLABLE_CHECK_SILENT, NULL, fci_cache, &error)) {
- if (error) {
- zend_string *callable_name
- = zend_get_callable_name_ex(&fci->function_name, fci->object);
- zend_error(E_WARNING, "Invalid callback %s, %s", ZSTR_VAL(callable_name), error);
- efree(error);
- zend_string_release_ex(callable_name, 0);
- }
- if (EG(current_execute_data) == &dummy_execute_data) {
- EG(current_execute_data) = dummy_execute_data.prev_execute_data;
- }
- return FAILURE;
- }
- ZEND_ASSERT(!error);
- }
- func = fci_cache->function_handler;
- if ((func->common.fn_flags & ZEND_ACC_STATIC) || !fci_cache->object) {
- fci->object = NULL;
- object_or_called_scope = fci_cache->called_scope;
- call_info = ZEND_CALL_TOP_FUNCTION | ZEND_CALL_DYNAMIC;
- } else {
- fci->object = fci_cache->object;
- object_or_called_scope = fci->object;
- call_info = ZEND_CALL_TOP_FUNCTION | ZEND_CALL_DYNAMIC | ZEND_CALL_HAS_THIS;
- }
- call = zend_vm_stack_push_call_frame(call_info,
- func, fci->param_count, object_or_called_scope);
- if (UNEXPECTED(func->common.fn_flags & ZEND_ACC_DEPRECATED)) {
- zend_error(E_DEPRECATED, "Function %s%s%s() is deprecated",
- func->common.scope ? ZSTR_VAL(func->common.scope->name) : "",
- func->common.scope ? "::" : "",
- ZSTR_VAL(func->common.function_name));
- if (UNEXPECTED(EG(exception))) {
- zend_vm_stack_free_call_frame(call);
- if (EG(current_execute_data) == &dummy_execute_data) {
- EG(current_execute_data) = dummy_execute_data.prev_execute_data;
- zend_rethrow_exception(EG(current_execute_data));
- }
- return FAILURE;
- }
- }
- for (i=0; i<fci->param_count; i++) {
- zval *param;
- zval *arg = &fci->params[i];
- if (ARG_SHOULD_BE_SENT_BY_REF(func, i + 1)) {
- if (UNEXPECTED(!Z_ISREF_P(arg))) {
- if (!fci->no_separation) {
- /* Separation is enabled -- create a ref */
- ZVAL_NEW_REF(arg, arg);
- } else if (!ARG_MAY_BE_SENT_BY_REF(func, i + 1)) {
- /* By-value send is not allowed -- emit a warning,
- * but still perform the call with a by-value send. */
- const char *arg_name = get_function_arg_name(func, i + 1);
- zend_error(E_WARNING,
- "%s%s%s(): Argument #%d%s%s%s must be passed by reference, value given",
- func->common.scope ? ZSTR_VAL(func->common.scope->name) : "",
- func->common.scope ? "::" : "",
- ZSTR_VAL(func->common.function_name),
- i+1,
- arg_name ? " ($" : "",
- arg_name ? arg_name : "",
- arg_name ? ")" : ""
- );
- if (UNEXPECTED(EG(exception))) {
- ZEND_CALL_NUM_ARGS(call) = i;
- zend_vm_stack_free_args(call);
- zend_vm_stack_free_call_frame(call);
- if (EG(current_execute_data) == &dummy_execute_data) {
- EG(current_execute_data) = dummy_execute_data.prev_execute_data;
- }
- return FAILURE;
- }
- }
- }
- } else {
- if (Z_ISREF_P(arg) &&
- !(func->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE)) {
- /* don't separate references for __call */
- arg = Z_REFVAL_P(arg);
- }
- }
- param = ZEND_CALL_ARG(call, i+1);
- ZVAL_COPY(param, arg);
- }
- if (UNEXPECTED(func->op_array.fn_flags & ZEND_ACC_CLOSURE)) {
- uint32_t call_info;
- GC_ADDREF(ZEND_CLOSURE_OBJECT(func));
- call_info = ZEND_CALL_CLOSURE;
- if (func->common.fn_flags & ZEND_ACC_FAKE_CLOSURE) {
- call_info |= ZEND_CALL_FAKE_CLOSURE;
- }
- ZEND_ADD_CALL_FLAG(call, call_info);
- }
- if (func->type == ZEND_USER_FUNCTION) {
- int call_via_handler = (func->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE) != 0;
- const zend_op *current_opline_before_exception = EG(opline_before_exception);
- zend_init_func_execute_data(call, &func->op_array, fci->retval);
- zend_execute_ex(call);
- EG(opline_before_exception) = current_opline_before_exception;
- if (call_via_handler) {
- /* We must re-initialize function again */
- fci_cache->function_handler = NULL;
- }
- } else {
- int call_via_handler = (func->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE) != 0;
- ZEND_ASSERT(func->type == ZEND_INTERNAL_FUNCTION);
- ZVAL_NULL(fci->retval);
- call->prev_execute_data = EG(current_execute_data);
- EG(current_execute_data) = call;
- if (EXPECTED(zend_execute_internal == NULL)) {
- /* saves one function call if zend_execute_internal is not used */
- func->internal_function.handler(call, fci->retval);
- } else {
- zend_execute_internal(call, fci->retval);
- }
- EG(current_execute_data) = call->prev_execute_data;
- zend_vm_stack_free_args(call);
- if (EG(exception)) {
- zval_ptr_dtor(fci->retval);
- ZVAL_UNDEF(fci->retval);
- }
- if (call_via_handler) {
- /* We must re-initialize function again */
- fci_cache->function_handler = NULL;
- }
- }
- zend_vm_stack_free_call_frame(call);
- if (EG(current_execute_data) == &dummy_execute_data) {
- EG(current_execute_data) = dummy_execute_data.prev_execute_data;
- }
- if (UNEXPECTED(EG(exception))) {
- if (UNEXPECTED(!EG(current_execute_data))) {
- zend_throw_exception_internal(NULL);
- } else if (EG(current_execute_data)->func &&
- ZEND_USER_CODE(EG(current_execute_data)->func->common.type)) {
- zend_rethrow_exception(EG(current_execute_data));
- }
- }
- return SUCCESS;
- }
- /* }}} */
- ZEND_API zend_class_entry *zend_lookup_class_ex(zend_string *name, zend_string *key, uint32_t flags) /* {{{ */
- {
- zend_class_entry *ce = NULL;
- zval args[1], *zv;
- zval local_retval;
- zend_string *lc_name;
- zend_fcall_info fcall_info;
- zend_fcall_info_cache fcall_cache;
- zend_class_entry *orig_fake_scope;
- if (key) {
- lc_name = key;
- } else {
- if (name == NULL || !ZSTR_LEN(name)) {
- return NULL;
- }
- if (ZSTR_VAL(name)[0] == '\\') {
- lc_name = zend_string_alloc(ZSTR_LEN(name) - 1, 0);
- zend_str_tolower_copy(ZSTR_VAL(lc_name), ZSTR_VAL(name) + 1, ZSTR_LEN(name) - 1);
- } else {
- lc_name = zend_string_tolower(name);
- }
- }
- zv = zend_hash_find(EG(class_table), lc_name);
- if (zv) {
- if (!key) {
- zend_string_release_ex(lc_name, 0);
- }
- ce = (zend_class_entry*)Z_PTR_P(zv);
- if (UNEXPECTED(!(ce->ce_flags & ZEND_ACC_LINKED))) {
- if ((flags & ZEND_FETCH_CLASS_ALLOW_UNLINKED) ||
- ((flags & ZEND_FETCH_CLASS_ALLOW_NEARLY_LINKED) &&
- (ce->ce_flags & ZEND_ACC_NEARLY_LINKED))) {
- ce->ce_flags |= ZEND_ACC_HAS_UNLINKED_USES;
- return ce;
- }
- return NULL;
- }
- return ce;
- }
- /* The compiler is not-reentrant. Make sure we __autoload() only during run-time
- * (doesn't impact functionality of __autoload()
- */
- if ((flags & ZEND_FETCH_CLASS_NO_AUTOLOAD) || zend_is_compiling()) {
- if (!key) {
- zend_string_release_ex(lc_name, 0);
- }
- return NULL;
- }
- if (!EG(autoload_func)) {
- if (!key) {
- zend_string_release_ex(lc_name, 0);
- }
- return NULL;
- }
- /* Verify class name before passing it to __autoload() */
- if (!key && strspn(ZSTR_VAL(name), "0123456789_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ\200\201\202\203\204\205\206\207\210\211\212\213\214\215\216\217\220\221\222\223\224\225\226\227\230\231\232\233\234\235\236\237\240\241\242\243\244\245\246\247\250\251\252\253\254\255\256\257\260\261\262\263\264\265\266\267\270\271\272\273\274\275\276\277\300\301\302\303\304\305\306\307\310\311\312\313\314\315\316\317\320\321\322\323\324\325\326\327\330\331\332\333\334\335\336\337\340\341\342\343\344\345\346\347\350\351\352\353\354\355\356\357\360\361\362\363\364\365\366\367\370\371\372\373\374\375\376\377\\") != ZSTR_LEN(name)) {
- zend_string_release_ex(lc_name, 0);
- return NULL;
- }
- if (EG(in_autoload) == NULL) {
- ALLOC_HASHTABLE(EG(in_autoload));
- zend_hash_init(EG(in_autoload), 8, NULL, NULL, 0);
- }
- if (zend_hash_add_empty_element(EG(in_autoload), lc_name) == NULL) {
- if (!key) {
- zend_string_release_ex(lc_name, 0);
- }
- return NULL;
- }
- ZVAL_UNDEF(&local_retval);
- if (ZSTR_VAL(name)[0] == '\\') {
- ZVAL_STRINGL(&args[0], ZSTR_VAL(name) + 1, ZSTR_LEN(name) - 1);
- } else {
- ZVAL_STR_COPY(&args[0], name);
- }
- fcall_info.size = sizeof(fcall_info);
- ZVAL_STR_COPY(&fcall_info.function_name, EG(autoload_func)->common.function_name);
- fcall_info.retval = &local_retval;
- fcall_info.param_count = 1;
- fcall_info.params = args;
- fcall_info.object = NULL;
- fcall_info.no_separation = 1;
- fcall_cache.function_handler = EG(autoload_func);
- fcall_cache.called_scope = NULL;
- fcall_cache.object = NULL;
- orig_fake_scope = EG(fake_scope);
- EG(fake_scope) = NULL;
- zend_exception_save();
- if ((zend_call_function(&fcall_info, &fcall_cache) == SUCCESS) && !EG(exception)) {
- ce = zend_hash_find_ptr(EG(class_table), lc_name);
- }
- zend_exception_restore();
- EG(fake_scope) = orig_fake_scope;
- zval_ptr_dtor(&args[0]);
- zval_ptr_dtor_str(&fcall_info.function_name);
- zend_hash_del(EG(in_autoload), lc_name);
- zval_ptr_dtor(&local_retval);
- if (!key) {
- zend_string_release_ex(lc_name, 0);
- }
- return ce;
- }
- /* }}} */
- ZEND_API zend_class_entry *zend_lookup_class(zend_string *name) /* {{{ */
- {
- return zend_lookup_class_ex(name, NULL, 0);
- }
- /* }}} */
- ZEND_API zend_class_entry *zend_get_called_scope(zend_execute_data *ex) /* {{{ */
- {
- while (ex) {
- if (Z_TYPE(ex->This) == IS_OBJECT) {
- return Z_OBJCE(ex->This);
- } else if (Z_CE(ex->This)) {
- return Z_CE(ex->This);
- } else if (ex->func) {
- if (ex->func->type != ZEND_INTERNAL_FUNCTION || ex->func->common.scope) {
- return NULL;
- }
- }
- ex = ex->prev_execute_data;
- }
- return NULL;
- }
- /* }}} */
- ZEND_API zend_object *zend_get_this_object(zend_execute_data *ex) /* {{{ */
- {
- while (ex) {
- if (Z_TYPE(ex->This) == IS_OBJECT) {
- return Z_OBJ(ex->This);
- } else if (ex->func) {
- if (ex->func->type != ZEND_INTERNAL_FUNCTION || ex->func->common.scope) {
- return NULL;
- }
- }
- ex = ex->prev_execute_data;
- }
- return NULL;
- }
- /* }}} */
- ZEND_API int zend_eval_stringl(const char *str, size_t str_len, zval *retval_ptr, const char *string_name) /* {{{ */
- {
- zval pv;
- zend_op_array *new_op_array;
- uint32_t original_compiler_options;
- int retval;
- if (retval_ptr) {
- ZVAL_NEW_STR(&pv, zend_string_alloc(str_len + sizeof("return ;")-1, 0));
- memcpy(Z_STRVAL(pv), "return ", sizeof("return ") - 1);
- memcpy(Z_STRVAL(pv) + sizeof("return ") - 1, str, str_len);
- Z_STRVAL(pv)[Z_STRLEN(pv) - 1] = ';';
- Z_STRVAL(pv)[Z_STRLEN(pv)] = '\0';
- } else {
- ZVAL_STRINGL(&pv, str, str_len);
- }
- /*printf("Evaluating '%s'\n", pv.value.str.val);*/
- original_compiler_options = CG(compiler_options);
- CG(compiler_options) = ZEND_COMPILE_DEFAULT_FOR_EVAL;
- new_op_array = zend_compile_string(&pv, string_name);
- CG(compiler_options) = original_compiler_options;
- if (new_op_array) {
- zval local_retval;
- EG(no_extensions)=1;
- new_op_array->scope = zend_get_executed_scope();
- zend_try {
- ZVAL_UNDEF(&local_retval);
- zend_execute(new_op_array, &local_retval);
- } zend_catch {
- destroy_op_array(new_op_array);
- efree_size(new_op_array, sizeof(zend_op_array));
- zend_bailout();
- } zend_end_try();
- if (Z_TYPE(local_retval) != IS_UNDEF) {
- if (retval_ptr) {
- ZVAL_COPY_VALUE(retval_ptr, &local_retval);
- } else {
- zval_ptr_dtor(&local_retval);
- }
- } else {
- if (retval_ptr) {
- ZVAL_NULL(retval_ptr);
- }
- }
- EG(no_extensions)=0;
- destroy_op_array(new_op_array);
- efree_size(new_op_array, sizeof(zend_op_array));
- retval = SUCCESS;
- } else {
- retval = FAILURE;
- }
- zval_ptr_dtor_str(&pv);
- return retval;
- }
- /* }}} */
- ZEND_API int zend_eval_string(const char *str, zval *retval_ptr, const char *string_name) /* {{{ */
- {
- return zend_eval_stringl(str, strlen(str), retval_ptr, string_name);
- }
- /* }}} */
- ZEND_API int zend_eval_stringl_ex(const char *str, size_t str_len, zval *retval_ptr, const char *string_name, int handle_exceptions) /* {{{ */
- {
- int result;
- result = zend_eval_stringl(str, str_len, retval_ptr, string_name);
- if (handle_exceptions && EG(exception)) {
- zend_exception_error(EG(exception), E_ERROR);
- result = FAILURE;
- }
- return result;
- }
- /* }}} */
- ZEND_API int zend_eval_string_ex(const char *str, zval *retval_ptr, const char *string_name, int handle_exceptions) /* {{{ */
- {
- return zend_eval_stringl_ex(str, strlen(str), retval_ptr, string_name, handle_exceptions);
- }
- /* }}} */
- static void zend_set_timeout_ex(zend_long seconds, int reset_signals);
- ZEND_API ZEND_NORETURN void ZEND_FASTCALL zend_timeout(int dummy) /* {{{ */
- {
- #if defined(PHP_WIN32)
- # ifndef ZTS
- /* No action is needed if we're timed out because zero seconds are
- just ignored. Also, the hard timeout needs to be respected. If the
- timer is not restarted properly, it could hang in the shutdown
- function. */
- if (EG(hard_timeout) > 0) {
- EG(timed_out) = 0;
- zend_set_timeout_ex(EG(hard_timeout), 1);
- /* XXX Abused, introduce an additional flag if the value needs to be kept. */
- EG(hard_timeout) = 0;
- }
- # endif
- #else
- EG(timed_out) = 0;
- zend_set_timeout_ex(0, 1);
- #endif
- zend_error_noreturn(E_ERROR, "Maximum execution time of " ZEND_LONG_FMT " second%s exceeded", EG(timeout_seconds), EG(timeout_seconds) == 1 ? "" : "s");
- }
- /* }}} */
- #ifndef ZEND_WIN32
- static void zend_timeout_handler(int dummy) /* {{{ */
- {
- #ifndef ZTS
- if (EG(timed_out)) {
- /* Die on hard timeout */
- const char *error_filename = NULL;
- uint32_t error_lineno = 0;
- char log_buffer[2048];
- int output_len = 0;
- if (zend_is_compiling()) {
- error_filename = ZSTR_VAL(zend_get_compiled_filename());
- error_lineno = zend_get_compiled_lineno();
- } else if (zend_is_executing()) {
- error_filename = zend_get_executed_filename();
- if (error_filename[0] == '[') { /* [no active file] */
- error_filename = NULL;
- error_lineno = 0;
- } else {
- error_lineno = zend_get_executed_lineno();
- }
- }
- if (!error_filename) {
- error_filename = "Unknown";
- }
- output_len = snprintf(log_buffer, sizeof(log_buffer), "\nFatal error: Maximum execution time of " ZEND_LONG_FMT "+" ZEND_LONG_FMT " seconds exceeded (terminated) in %s on line %d\n", EG(timeout_seconds), EG(hard_timeout), error_filename, error_lineno);
- if (output_len > 0) {
- zend_quiet_write(2, log_buffer, MIN(output_len, sizeof(log_buffer)));
- }
- _exit(124);
- }
- #endif
- if (zend_on_timeout) {
- zend_on_timeout(EG(timeout_seconds));
- }
- EG(timed_out) = 1;
- EG(vm_interrupt) = 1;
- #ifndef ZTS
- if (EG(hard_timeout) > 0) {
- /* Set hard timeout */
- zend_set_timeout_ex(EG(hard_timeout), 1);
- }
- #endif
- }
- /* }}} */
- #endif
- #ifdef ZEND_WIN32
- VOID CALLBACK tq_timer_cb(PVOID arg, BOOLEAN timed_out)
- {
- zend_executor_globals *eg;
- /* The doc states it'll be always true, however it theoretically
- could be FALSE when the thread was signaled. */
- if (!timed_out) {
- return;
- }
- eg = (zend_executor_globals *)arg;
- eg->timed_out = 1;
- eg->vm_interrupt = 1;
- }
- #endif
- /* This one doesn't exists on QNX */
- #ifndef SIGPROF
- #define SIGPROF 27
- #endif
- static void zend_set_timeout_ex(zend_long seconds, int reset_signals) /* {{{ */
- {
- #ifdef ZEND_WIN32
- zend_executor_globals *eg;
- if (!seconds) {
- return;
- }
- /* Don't use ChangeTimerQueueTimer() as it will not restart an expired
- * timer, so we could end up with just an ignored timeout. Instead
- * delete and recreate. */
- if (NULL != tq_timer) {
- if (!DeleteTimerQueueTimer(NULL, tq_timer, INVALID_HANDLE_VALUE)) {
- tq_timer = NULL;
- zend_error_noreturn(E_ERROR, "Could not delete queued timer");
- return;
- }
- tq_timer = NULL;
- }
- /* XXX passing NULL means the default timer queue provided by the system is used */
- eg = ZEND_MODULE_GLOBALS_BULK(executor);
- if (!CreateTimerQueueTimer(&tq_timer, NULL, (WAITORTIMERCALLBACK)tq_timer_cb, (VOID*)eg, seconds*1000, 0, WT_EXECUTEONLYONCE)) {
- tq_timer = NULL;
- zend_error_noreturn(E_ERROR, "Could not queue new timer");
- return;
- }
- #elif defined(HAVE_SETITIMER)
- {
- struct itimerval t_r; /* timeout requested */
- int signo;
- if(seconds) {
- t_r.it_value.tv_sec = seconds;
- t_r.it_value.tv_usec = t_r.it_interval.tv_sec = t_r.it_interval.tv_usec = 0;
- # ifdef __CYGWIN__
- setitimer(ITIMER_REAL, &t_r, NULL);
- }
- signo = SIGALRM;
- # else
- setitimer(ITIMER_PROF, &t_r, NULL);
- }
- signo = SIGPROF;
- # endif
- if (reset_signals) {
- # ifdef ZEND_SIGNALS
- zend_signal(signo, zend_timeout_handler);
- # else
- sigset_t sigset;
- # ifdef HAVE_SIGACTION
- struct sigaction act;
- act.sa_handler = zend_timeout_handler;
- sigemptyset(&act.sa_mask);
- act.sa_flags = SA_RESETHAND | SA_NODEFER;
- sigaction(signo, &act, NULL);
- # else
- signal(signo, zend_timeout_handler);
- # endif /* HAVE_SIGACTION */
- sigemptyset(&sigset);
- sigaddset(&sigset, signo);
- sigprocmask(SIG_UNBLOCK, &sigset, NULL);
- # endif /* ZEND_SIGNALS */
- }
- }
- #endif /* HAVE_SETITIMER */
- }
- /* }}} */
- void zend_set_timeout(zend_long seconds, int reset_signals) /* {{{ */
- {
- EG(timeout_seconds) = seconds;
- zend_set_timeout_ex(seconds, reset_signals);
- EG(timed_out) = 0;
- }
- /* }}} */
- void zend_unset_timeout(void) /* {{{ */
- {
- #ifdef ZEND_WIN32
- if (NULL != tq_timer) {
- if (!DeleteTimerQueueTimer(NULL, tq_timer, INVALID_HANDLE_VALUE)) {
- EG(timed_out) = 0;
- tq_timer = NULL;
- zend_error_noreturn(E_ERROR, "Could not delete queued timer");
- return;
- }
- tq_timer = NULL;
- }
- #elif defined(HAVE_SETITIMER)
- if (EG(timeout_seconds)) {
- struct itimerval no_timeout;
- no_timeout.it_value.tv_sec = no_timeout.it_value.tv_usec = no_timeout.it_interval.tv_sec = no_timeout.it_interval.tv_usec = 0;
- # ifdef __CYGWIN__
- setitimer(ITIMER_REAL, &no_timeout, NULL);
- # else
- setitimer(ITIMER_PROF, &no_timeout, NULL);
- # endif
- }
- #endif
- EG(timed_out) = 0;
- }
- /* }}} */
- zend_class_entry *zend_fetch_class(zend_string *class_name, int fetch_type) /* {{{ */
- {
- zend_class_entry *ce, *scope;
- int fetch_sub_type = fetch_type & ZEND_FETCH_CLASS_MASK;
- check_fetch_type:
- switch (fetch_sub_type) {
- case ZEND_FETCH_CLASS_SELF:
- scope = zend_get_executed_scope();
- if (UNEXPECTED(!scope)) {
- zend_throw_or_error(fetch_type, NULL, "Cannot access self:: when no class scope is active");
- }
- return scope;
- case ZEND_FETCH_CLASS_PARENT:
- scope = zend_get_executed_scope();
- if (UNEXPECTED(!scope)) {
- zend_throw_or_error(fetch_type, NULL, "Cannot access parent:: when no class scope is active");
- return NULL;
- }
- if (UNEXPECTED(!scope->parent)) {
- zend_throw_or_error(fetch_type, NULL, "Cannot access parent:: when current class scope has no parent");
- }
- return scope->parent;
- case ZEND_FETCH_CLASS_STATIC:
- ce = zend_get_called_scope(EG(current_execute_data));
- if (UNEXPECTED(!ce)) {
- zend_throw_or_error(fetch_type, NULL, "Cannot access static:: when no class scope is active");
- return NULL;
- }
- return ce;
- case ZEND_FETCH_CLASS_AUTO: {
- fetch_sub_type = zend_get_class_fetch_type(class_name);
- if (UNEXPECTED(fetch_sub_type != ZEND_FETCH_CLASS_DEFAULT)) {
- goto check_fetch_type;
- }
- }
- break;
- }
- if (fetch_type & ZEND_FETCH_CLASS_NO_AUTOLOAD) {
- return zend_lookup_class_ex(class_name, NULL, fetch_type);
- } else if ((ce = zend_lookup_class_ex(class_name, NULL, fetch_type)) == NULL) {
- if (!(fetch_type & ZEND_FETCH_CLASS_SILENT) && !EG(exception)) {
- if (fetch_sub_type == ZEND_FETCH_CLASS_INTERFACE) {
- zend_throw_or_error(fetch_type, NULL, "Interface '%s' not found", ZSTR_VAL(class_name));
- } else if (fetch_sub_type == ZEND_FETCH_CLASS_TRAIT) {
- zend_throw_or_error(fetch_type, NULL, "Trait '%s' not found", ZSTR_VAL(class_name));
- } else {
- zend_throw_or_error(fetch_type, NULL, "Class '%s' not found", ZSTR_VAL(class_name));
- }
- }
- return NULL;
- }
- return ce;
- }
- /* }}} */
- zend_class_entry *zend_fetch_class_by_name(zend_string *class_name, zend_string *key, int fetch_type) /* {{{ */
- {
- zend_class_entry *ce;
- if (fetch_type & ZEND_FETCH_CLASS_NO_AUTOLOAD) {
- return zend_lookup_class_ex(class_name, key, fetch_type);
- } else if ((ce = zend_lookup_class_ex(class_name, key, fetch_type)) == NULL) {
- if (fetch_type & ZEND_FETCH_CLASS_SILENT) {
- return NULL;
- }
- if (EG(exception)) {
- if (!(fetch_type & ZEND_FETCH_CLASS_EXCEPTION)) {
- zend_string *exception_str;
- zval exception_zv;
- ZVAL_OBJ(&exception_zv, EG(exception));
- Z_ADDREF(exception_zv);
- zend_clear_exception();
- exception_str = zval_get_string(&exception_zv);
- zend_error_noreturn(E_ERROR,
- "During class fetch: Uncaught %s", ZSTR_VAL(exception_str));
- }
- return NULL;
- }
- if ((fetch_type & ZEND_FETCH_CLASS_MASK) == ZEND_FETCH_CLASS_INTERFACE) {
- zend_throw_or_error(fetch_type, NULL, "Interface '%s' not found", ZSTR_VAL(class_name));
- } else if ((fetch_type & ZEND_FETCH_CLASS_MASK) == ZEND_FETCH_CLASS_TRAIT) {
- zend_throw_or_error(fetch_type, NULL, "Trait '%s' not found", ZSTR_VAL(class_name));
- } else {
- zend_throw_or_error(fetch_type, NULL, "Class '%s' not found", ZSTR_VAL(class_name));
- }
- return NULL;
- }
- return ce;
- }
- /* }}} */
- ZEND_API int zend_delete_global_variable(zend_string *name) /* {{{ */
- {
- return zend_hash_del_ind(&EG(symbol_table), name);
- }
- /* }}} */
- ZEND_API zend_array *zend_rebuild_symbol_table(void) /* {{{ */
- {
- zend_execute_data *ex;
- zend_array *symbol_table;
- /* Search for last called user function */
- ex = EG(current_execute_data);
- while (ex && (!ex->func || !ZEND_USER_CODE(ex->func->common.type))) {
- ex = ex->prev_execute_data;
- }
- if (!ex) {
- return NULL;
- }
- if (ZEND_CALL_INFO(ex) & ZEND_CALL_HAS_SYMBOL_TABLE) {
- return ex->symbol_table;
- }
- ZEND_ADD_CALL_FLAG(ex, ZEND_CALL_HAS_SYMBOL_TABLE);
- if (EG(symtable_cache_ptr) > EG(symtable_cache)) {
- symbol_table = ex->symbol_table = *(--EG(symtable_cache_ptr));
- if (!ex->func->op_array.last_var) {
- return symbol_table;
- }
- zend_hash_extend(symbol_table, ex->func->op_array.last_var, 0);
- } else {
- symbol_table = ex->symbol_table = zend_new_array(ex->func->op_array.last_var);
- if (!ex->func->op_array.last_var) {
- return symbol_table;
- }
- zend_hash_real_init_mixed(symbol_table);
- /*printf("Cache miss! Initialized %x\n", EG(active_symbol_table));*/
- }
- if (EXPECTED(ex->func->op_array.last_var)) {
- zend_string **str = ex->func->op_array.vars;
- zend_string **end = str + ex->func->op_array.last_var;
- zval *var = ZEND_CALL_VAR_NUM(ex, 0);
- do {
- _zend_hash_append_ind(symbol_table, *str, var);
- str++;
- var++;
- } while (str != end);
- }
- return symbol_table;
- }
- /* }}} */
- ZEND_API void zend_attach_symbol_table(zend_execute_data *execute_data) /* {{{ */
- {
- zend_op_array *op_array = &execute_data->func->op_array;
- HashTable *ht = execute_data->symbol_table;
- /* copy real values from symbol table into CV slots and create
- INDIRECT references to CV in symbol table */
- if (EXPECTED(op_array->last_var)) {
- zend_string **str = op_array->vars;
- zend_string **end = str + op_array->last_var;
- zval *var = EX_VAR_NUM(0);
- do {
- zval *zv = zend_hash_find_ex(ht, *str, 1);
- if (zv) {
- if (Z_TYPE_P(zv) == IS_INDIRECT) {
- zval *val = Z_INDIRECT_P(zv);
- ZVAL_COPY_VALUE(var, val);
- } else {
- ZVAL_COPY_VALUE(var, zv);
- }
- } else {
- ZVAL_UNDEF(var);
- zv = zend_hash_add_new(ht, *str, var);
- }
- ZVAL_INDIRECT(zv, var);
- str++;
- var++;
- } while (str != end);
- }
- }
- /* }}} */
- ZEND_API void zend_detach_symbol_table(zend_execute_data *execute_data) /* {{{ */
- {
- zend_op_array *op_array = &execute_data->func->op_array;
- HashTable *ht = execute_data->symbol_table;
- /* copy real values from CV slots into symbol table */
- if (EXPECTED(op_array->last_var)) {
- zend_string **str = op_array->vars;
- zend_string **end = str + op_array->last_var;
- zval *var = EX_VAR_NUM(0);
- do {
- if (Z_TYPE_P(var) == IS_UNDEF) {
- zend_hash_del(ht, *str);
- } else {
- zend_hash_update(ht, *str, var);
- ZVAL_UNDEF(var);
- }
- str++;
- var++;
- } while (str != end);
- }
- }
- /* }}} */
- ZEND_API int zend_set_local_var(zend_string *name, zval *value, int force) /* {{{ */
- {
- zend_execute_data *execute_data = EG(current_execute_data);
- while (execute_data && (!execute_data->func || !ZEND_USER_CODE(execute_data->func->common.type))) {
- execute_data = execute_data->prev_execute_data;
- }
- if (execute_data) {
- if (!(EX_CALL_INFO() & ZEND_CALL_HAS_SYMBOL_TABLE)) {
- zend_ulong h = zend_string_hash_val(name);
- zend_op_array *op_array = &execute_data->func->op_array;
- if (EXPECTED(op_array->last_var)) {
- zend_string **str = op_array->vars;
- zend_string **end = str + op_array->last_var;
- do {
- if (ZSTR_H(*str) == h &&
- zend_string_equal_content(*str, name)) {
- zval *var = EX_VAR_NUM(str - op_array->vars);
- ZVAL_COPY_VALUE(var, value);
- return SUCCESS;
- }
- str++;
- } while (str != end);
- }
- if (force) {
- zend_array *symbol_table = zend_rebuild_symbol_table();
- if (symbol_table) {
- zend_hash_update(symbol_table, name, value);
- return SUCCESS;
- }
- }
- } else {
- zend_hash_update_ind(execute_data->symbol_table, name, value);
- return SUCCESS;
- }
- }
- return FAILURE;
- }
- /* }}} */
- ZEND_API int zend_set_local_var_str(const char *name, size_t len, zval *value, int force) /* {{{ */
- {
- zend_execute_data *execute_data = EG(current_execute_data);
- while (execute_data && (!execute_data->func || !ZEND_USER_CODE(execute_data->func->common.type))) {
- execute_data = execute_data->prev_execute_data;
- }
- if (execute_data) {
- if (!(EX_CALL_INFO() & ZEND_CALL_HAS_SYMBOL_TABLE)) {
- zend_ulong h = zend_hash_func(name, len);
- zend_op_array *op_array = &execute_data->func->op_array;
- if (EXPECTED(op_array->last_var)) {
- zend_string **str = op_array->vars;
- zend_string **end = str + op_array->last_var;
- do {
- if (ZSTR_H(*str) == h &&
- ZSTR_LEN(*str) == len &&
- memcmp(ZSTR_VAL(*str), name, len) == 0) {
- zval *var = EX_VAR_NUM(str - op_array->vars);
- zval_ptr_dtor(var);
- ZVAL_COPY_VALUE(var, value);
- return SUCCESS;
- }
- str++;
- } while (str != end);
- }
- if (force) {
- zend_array *symbol_table = zend_rebuild_symbol_table();
- if (symbol_table) {
- zend_hash_str_update(symbol_table, name, len, value);
- return SUCCESS;
- }
- }
- } else {
- zend_hash_str_update_ind(execute_data->symbol_table, name, len, value);
- return SUCCESS;
- }
- }
- return FAILURE;
- }
- /* }}} */