1 /*
2 +----------------------------------------------------------------------+
3 | Zend Engine |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1998-2013 Zend Technologies Ltd. (http://www.zend.com) |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 2.00 of the Zend license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.zend.com/license/2_00.txt. |
11 | If you did not receive a copy of the Zend license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@zend.com so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Authors: Andi Gutmans <andi@zend.com> |
16 | Zeev Suraski <zeev@zend.com> |
17 +----------------------------------------------------------------------+
18 */
19
20 /* $Id$ */
21
22 #include <stdio.h>
23 #include <signal.h>
24
25 #include "zend.h"
26 #include "zend_compile.h"
27 #include "zend_execute.h"
28 #include "zend_API.h"
29 #include "zend_ptr_stack.h"
30 #include "zend_constants.h"
31 #include "zend_extensions.h"
32 #include "zend_exceptions.h"
33 #include "zend_closures.h"
34 #include "zend_vm.h"
35 #include "zend_float.h"
36 #ifdef HAVE_SYS_TIME_H
37 #include <sys/time.h>
38 #endif
39
40 ZEND_API void (*zend_execute)(zend_op_array *op_array TSRMLS_DC);
41 ZEND_API void (*zend_execute_internal)(zend_execute_data *execute_data_ptr, int return_value_used TSRMLS_DC);
42
43 /* true globals */
44 ZEND_API const zend_fcall_info empty_fcall_info = { 0, NULL, NULL, NULL, NULL, 0, NULL, NULL, 0 };
45 ZEND_API const zend_fcall_info_cache empty_fcall_info_cache = { 0, NULL, NULL, NULL, NULL };
46
47 #ifdef ZEND_WIN32
48 #include <process.h>
49 static WNDCLASS wc;
50 static HWND timeout_window;
51 static HANDLE timeout_thread_event;
52 static HANDLE timeout_thread_handle;
53 static DWORD timeout_thread_id;
54 static int timeout_thread_initialized=0;
55 #endif
56
57 #if 0&&ZEND_DEBUG
58 static void (*original_sigsegv_handler)(int);
59 static void zend_handle_sigsegv(int dummy) /* {{{ */
60 {
61 fflush(stdout);
62 fflush(stderr);
63 if (original_sigsegv_handler == zend_handle_sigsegv) {
64 signal(SIGSEGV, original_sigsegv_handler);
65 } else {
66 signal(SIGSEGV, SIG_DFL);
67 }
68 {
69 TSRMLS_FETCH();
70
71 fprintf(stderr, "SIGSEGV caught on opcode %d on opline %d of %s() at %s:%d\n\n",
72 active_opline->opcode,
73 active_opline-EG(active_op_array)->opcodes,
74 get_active_function_name(TSRMLS_C),
75 zend_get_executed_filename(TSRMLS_C),
76 zend_get_executed_lineno(TSRMLS_C));
77 /* See http://support.microsoft.com/kb/190351 */
78 #ifdef PHP_WIN32
79 fflush(stderr);
80 #endif
81 }
82 if (original_sigsegv_handler!=zend_handle_sigsegv) {
83 original_sigsegv_handler(dummy);
84 }
85 }
86 /* }}} */
87 #endif
88
zend_extension_activator(zend_extension * extension TSRMLS_DC)89 static void zend_extension_activator(zend_extension *extension TSRMLS_DC) /* {{{ */
90 {
91 if (extension->activate) {
92 extension->activate();
93 }
94 }
95 /* }}} */
96
zend_extension_deactivator(zend_extension * extension TSRMLS_DC)97 static void zend_extension_deactivator(zend_extension *extension TSRMLS_DC) /* {{{ */
98 {
99 if (extension->deactivate) {
100 extension->deactivate();
101 }
102 }
103 /* }}} */
104
clean_non_persistent_function(zend_function * function TSRMLS_DC)105 static int clean_non_persistent_function(zend_function *function TSRMLS_DC) /* {{{ */
106 {
107 return (function->type == ZEND_INTERNAL_FUNCTION) ? ZEND_HASH_APPLY_STOP : ZEND_HASH_APPLY_REMOVE;
108 }
109 /* }}} */
110
clean_non_persistent_function_full(zend_function * function TSRMLS_DC)111 static int clean_non_persistent_function_full(zend_function *function TSRMLS_DC) /* {{{ */
112 {
113 return (function->type != ZEND_INTERNAL_FUNCTION);
114 }
115 /* }}} */
116
clean_non_persistent_class(zend_class_entry ** ce TSRMLS_DC)117 static int clean_non_persistent_class(zend_class_entry **ce TSRMLS_DC) /* {{{ */
118 {
119 return ((*ce)->type == ZEND_INTERNAL_CLASS) ? ZEND_HASH_APPLY_STOP : ZEND_HASH_APPLY_REMOVE;
120 }
121 /* }}} */
122
clean_non_persistent_class_full(zend_class_entry ** ce TSRMLS_DC)123 static int clean_non_persistent_class_full(zend_class_entry **ce TSRMLS_DC) /* {{{ */
124 {
125 return ((*ce)->type != ZEND_INTERNAL_CLASS);
126 }
127 /* }}} */
128
init_executor(TSRMLS_D)129 void init_executor(TSRMLS_D) /* {{{ */
130 {
131 zend_init_fpu(TSRMLS_C);
132
133 INIT_ZVAL(EG(uninitialized_zval));
134 /* trick to make uninitialized_zval never be modified, passed by ref, etc. */
135 Z_ADDREF(EG(uninitialized_zval));
136 INIT_ZVAL(EG(error_zval));
137 EG(uninitialized_zval_ptr)=&EG(uninitialized_zval);
138 EG(error_zval_ptr)=&EG(error_zval);
139 zend_ptr_stack_init(&EG(arg_types_stack));
140 /* destroys stack frame, therefore makes core dumps worthless */
141 #if 0&&ZEND_DEBUG
142 original_sigsegv_handler = signal(SIGSEGV, zend_handle_sigsegv);
143 #endif
144 EG(return_value_ptr_ptr) = NULL;
145
146 EG(symtable_cache_ptr) = EG(symtable_cache) - 1;
147 EG(symtable_cache_limit) = EG(symtable_cache) + SYMTABLE_CACHE_SIZE - 1;
148 EG(no_extensions) = 0;
149
150 EG(function_table) = CG(function_table);
151 EG(class_table) = CG(class_table);
152
153 EG(in_execution) = 0;
154 EG(in_autoload) = NULL;
155 EG(autoload_func) = NULL;
156 EG(error_handling) = EH_NORMAL;
157
158 zend_vm_stack_init(TSRMLS_C);
159 zend_vm_stack_push((void *) NULL TSRMLS_CC);
160
161 zend_hash_init(&EG(symbol_table), 50, NULL, ZVAL_PTR_DTOR, 0);
162 {
163 zval *globals;
164
165 ALLOC_ZVAL(globals);
166 Z_SET_REFCOUNT_P(globals, 1);
167 Z_SET_ISREF_P(globals);
168 Z_TYPE_P(globals) = IS_ARRAY;
169 Z_ARRVAL_P(globals) = &EG(symbol_table);
170 zend_hash_update(&EG(symbol_table), "GLOBALS", sizeof("GLOBALS"), &globals, sizeof(zval *), NULL);
171 }
172 EG(active_symbol_table) = &EG(symbol_table);
173
174 zend_llist_apply(&zend_extensions, (llist_apply_func_t) zend_extension_activator TSRMLS_CC);
175 EG(opline_ptr) = NULL;
176
177 zend_hash_init(&EG(included_files), 5, NULL, NULL, 0);
178
179 EG(ticks_count) = 0;
180
181 EG(user_error_handler) = NULL;
182
183 EG(current_execute_data) = NULL;
184
185 zend_stack_init(&EG(user_error_handlers_error_reporting));
186 zend_ptr_stack_init(&EG(user_error_handlers));
187 zend_ptr_stack_init(&EG(user_exception_handlers));
188
189 zend_objects_store_init(&EG(objects_store), 1024);
190
191 EG(full_tables_cleanup) = 0;
192 #ifdef ZEND_WIN32
193 EG(timed_out) = 0;
194 #endif
195
196 EG(exception) = NULL;
197 EG(prev_exception) = NULL;
198
199 EG(scope) = NULL;
200 EG(called_scope) = NULL;
201
202 EG(This) = NULL;
203
204 EG(active_op_array) = NULL;
205
206 EG(active) = 1;
207 }
208 /* }}} */
209
zval_call_destructor(zval ** zv TSRMLS_DC)210 static int zval_call_destructor(zval **zv TSRMLS_DC) /* {{{ */
211 {
212 if (Z_TYPE_PP(zv) == IS_OBJECT && Z_REFCOUNT_PP(zv) == 1) {
213 return ZEND_HASH_APPLY_REMOVE;
214 } else {
215 return ZEND_HASH_APPLY_KEEP;
216 }
217 }
218 /* }}} */
219
shutdown_destructors(TSRMLS_D)220 void shutdown_destructors(TSRMLS_D) /* {{{ */
221 {
222 zend_try {
223 int symbols;
224 do {
225 symbols = zend_hash_num_elements(&EG(symbol_table));
226 zend_hash_reverse_apply(&EG(symbol_table), (apply_func_t) zval_call_destructor TSRMLS_CC);
227 } while (symbols != zend_hash_num_elements(&EG(symbol_table)));
228 zend_objects_store_call_destructors(&EG(objects_store) TSRMLS_CC);
229 } zend_catch {
230 /* if we couldn't destruct cleanly, mark all objects as destructed anyway */
231 zend_objects_store_mark_destructed(&EG(objects_store) TSRMLS_CC);
232 } zend_end_try();
233 }
234 /* }}} */
235
shutdown_executor(TSRMLS_D)236 void shutdown_executor(TSRMLS_D) /* {{{ */
237 {
238 zend_try {
239
240 /* Removed because this can not be safely done, e.g. in this situation:
241 Object 1 creates object 2
242 Object 3 holds reference to object 2.
243 Now when 1 and 2 are destroyed, 3 can still access 2 in its destructor, with
244 very problematic results */
245 /* zend_objects_store_call_destructors(&EG(objects_store) TSRMLS_CC); */
246
247 /* Moved after symbol table cleaners, because some of the cleaners can call
248 destructors, which would use EG(symtable_cache_ptr) and thus leave leaks */
249 /* while (EG(symtable_cache_ptr)>=EG(symtable_cache)) {
250 zend_hash_destroy(*EG(symtable_cache_ptr));
251 efree(*EG(symtable_cache_ptr));
252 EG(symtable_cache_ptr)--;
253 }
254 */
255 zend_llist_apply(&zend_extensions, (llist_apply_func_t) zend_extension_deactivator TSRMLS_CC);
256 zend_hash_graceful_reverse_destroy(&EG(symbol_table));
257 } zend_end_try();
258
259 zend_try {
260 zval *zeh;
261 /* remove error handlers before destroying classes and functions,
262 * so that if handler used some class, crash would not happen */
263 if (EG(user_error_handler)) {
264 zeh = EG(user_error_handler);
265 EG(user_error_handler) = NULL;
266 zval_ptr_dtor(&zeh);
267 }
268
269 if (EG(user_exception_handler)) {
270 zeh = EG(user_exception_handler);
271 EG(user_exception_handler) = NULL;
272 zval_ptr_dtor(&zeh);
273 }
274
275 zend_stack_destroy(&EG(user_error_handlers_error_reporting));
276 zend_stack_init(&EG(user_error_handlers_error_reporting));
277 zend_ptr_stack_clean(&EG(user_error_handlers), ZVAL_DESTRUCTOR, 1);
278 zend_ptr_stack_clean(&EG(user_exception_handlers), ZVAL_DESTRUCTOR, 1);
279 } zend_end_try();
280
281 zend_try {
282 /* Cleanup static data for functions and arrays.
283 * We need a separate cleanup stage because of the following problem:
284 * Suppose we destroy class X, which destroys the class's function table,
285 * and in the function table we have function foo() that has static $bar.
286 * Now if an object of class X is assigned to $bar, its destructor will be
287 * called and will fail since X's function table is in mid-destruction.
288 * So we want first of all to clean up all data and then move to tables destruction.
289 * Note that only run-time accessed data need to be cleaned up, pre-defined data can
290 * not contain objects and thus are not probelmatic */
291 if (EG(full_tables_cleanup)) {
292 zend_hash_apply(EG(function_table), (apply_func_t) zend_cleanup_function_data_full TSRMLS_CC);
293 } else {
294 zend_hash_reverse_apply(EG(function_table), (apply_func_t) zend_cleanup_function_data TSRMLS_CC);
295 }
296 zend_hash_apply(EG(class_table), (apply_func_t) zend_cleanup_class_data TSRMLS_CC);
297 } zend_end_try();
298
299 zend_try {
300 zend_vm_stack_destroy(TSRMLS_C);
301
302 zend_objects_store_free_object_storage(&EG(objects_store) TSRMLS_CC);
303
304 /* Destroy all op arrays */
305 if (EG(full_tables_cleanup)) {
306 zend_hash_apply(EG(function_table), (apply_func_t) clean_non_persistent_function_full TSRMLS_CC);
307 zend_hash_apply(EG(class_table), (apply_func_t) clean_non_persistent_class_full TSRMLS_CC);
308 } else {
309 zend_hash_reverse_apply(EG(function_table), (apply_func_t) clean_non_persistent_function TSRMLS_CC);
310 zend_hash_reverse_apply(EG(class_table), (apply_func_t) clean_non_persistent_class TSRMLS_CC);
311 }
312
313 while (EG(symtable_cache_ptr)>=EG(symtable_cache)) {
314 zend_hash_destroy(*EG(symtable_cache_ptr));
315 FREE_HASHTABLE(*EG(symtable_cache_ptr));
316 EG(symtable_cache_ptr)--;
317 }
318 } zend_end_try();
319
320 zend_try {
321 clean_non_persistent_constants(TSRMLS_C);
322 } zend_end_try();
323
324 zend_try {
325 #if 0&&ZEND_DEBUG
326 signal(SIGSEGV, original_sigsegv_handler);
327 #endif
328
329 zend_hash_destroy(&EG(included_files));
330
331 zend_ptr_stack_destroy(&EG(arg_types_stack));
332 zend_stack_destroy(&EG(user_error_handlers_error_reporting));
333 zend_ptr_stack_destroy(&EG(user_error_handlers));
334 zend_ptr_stack_destroy(&EG(user_exception_handlers));
335 zend_objects_store_destroy(&EG(objects_store));
336 if (EG(in_autoload)) {
337 zend_hash_destroy(EG(in_autoload));
338 FREE_HASHTABLE(EG(in_autoload));
339 }
340 } zend_end_try();
341
342 zend_shutdown_fpu(TSRMLS_C);
343
344 EG(active) = 0;
345 }
346 /* }}} */
347
348 /* return class name and "::" or "". */
get_active_class_name(char ** space TSRMLS_DC)349 ZEND_API char *get_active_class_name(char **space TSRMLS_DC) /* {{{ */
350 {
351 if (!zend_is_executing(TSRMLS_C)) {
352 if (space) {
353 *space = "";
354 }
355 return "";
356 }
357 switch (EG(current_execute_data)->function_state.function->type) {
358 case ZEND_USER_FUNCTION:
359 case ZEND_INTERNAL_FUNCTION:
360 {
361 zend_class_entry *ce = EG(current_execute_data)->function_state.function->common.scope;
362
363 if (space) {
364 *space = ce ? "::" : "";
365 }
366 return ce ? ce->name : "";
367 }
368 default:
369 if (space) {
370 *space = "";
371 }
372 return "";
373 }
374 }
375 /* }}} */
376
get_active_function_name(TSRMLS_D)377 ZEND_API char *get_active_function_name(TSRMLS_D) /* {{{ */
378 {
379 if (!zend_is_executing(TSRMLS_C)) {
380 return NULL;
381 }
382 switch (EG(current_execute_data)->function_state.function->type) {
383 case ZEND_USER_FUNCTION: {
384 char *function_name = ((zend_op_array *) EG(current_execute_data)->function_state.function)->function_name;
385
386 if (function_name) {
387 return function_name;
388 } else {
389 return "main";
390 }
391 }
392 break;
393 case ZEND_INTERNAL_FUNCTION:
394 return ((zend_internal_function *) EG(current_execute_data)->function_state.function)->function_name;
395 break;
396 default:
397 return NULL;
398 }
399 }
400 /* }}} */
401
zend_get_executed_filename(TSRMLS_D)402 ZEND_API char *zend_get_executed_filename(TSRMLS_D) /* {{{ */
403 {
404 if (EG(active_op_array)) {
405 return EG(active_op_array)->filename;
406 } else {
407 return "[no active file]";
408 }
409 }
410 /* }}} */
411
zend_get_executed_lineno(TSRMLS_D)412 ZEND_API uint zend_get_executed_lineno(TSRMLS_D) /* {{{ */
413 {
414 if(EG(exception) && EG(opline_ptr) && active_opline->opcode == ZEND_HANDLE_EXCEPTION &&
415 active_opline->lineno == 0 && EG(opline_before_exception)) {
416 return EG(opline_before_exception)->lineno;
417 }
418 if (EG(opline_ptr)) {
419 return active_opline->lineno;
420 } else {
421 return 0;
422 }
423 }
424 /* }}} */
425
zend_is_executing(TSRMLS_D)426 ZEND_API zend_bool zend_is_executing(TSRMLS_D) /* {{{ */
427 {
428 return EG(in_execution);
429 }
430 /* }}} */
431
_zval_ptr_dtor(zval ** zval_ptr ZEND_FILE_LINE_DC)432 ZEND_API void _zval_ptr_dtor(zval **zval_ptr ZEND_FILE_LINE_DC) /* {{{ */
433 {
434 zval *zv = *zval_ptr;
435
436 #if DEBUG_ZEND>=2
437 printf("Reducing refcount for %x (%x): %d->%d\n", *zval_ptr, zval_ptr, Z_REFCOUNT_PP(zval_ptr), Z_REFCOUNT_PP(zval_ptr) - 1);
438 #endif
439 Z_DELREF_P(zv);
440 if (Z_REFCOUNT_P(zv) == 0) {
441 TSRMLS_FETCH();
442
443 if (zv != &EG(uninitialized_zval)) {
444 GC_REMOVE_ZVAL_FROM_BUFFER(zv);
445 zval_dtor(zv);
446 efree_rel(zv);
447 }
448 } else {
449 TSRMLS_FETCH();
450
451 if (Z_REFCOUNT_P(zv) == 1) {
452 Z_UNSET_ISREF_P(zv);
453 }
454
455 GC_ZVAL_CHECK_POSSIBLE_ROOT(zv);
456 }
457 }
458 /* }}} */
459
_zval_internal_ptr_dtor(zval ** zval_ptr ZEND_FILE_LINE_DC)460 ZEND_API void _zval_internal_ptr_dtor(zval **zval_ptr ZEND_FILE_LINE_DC) /* {{{ */
461 {
462 #if DEBUG_ZEND>=2
463 printf("Reducing refcount for %x (%x): %d->%d\n", *zval_ptr, zval_ptr, Z_REFCOUNT_PP(zval_ptr), Z_REFCOUNT_PP(zval_ptr) - 1);
464 #endif
465 Z_DELREF_PP(zval_ptr);
466 if (Z_REFCOUNT_PP(zval_ptr) == 0) {
467 zval_internal_dtor(*zval_ptr);
468 free(*zval_ptr);
469 } else if (Z_REFCOUNT_PP(zval_ptr) == 1) {
470 Z_UNSET_ISREF_PP(zval_ptr);
471 }
472 }
473 /* }}} */
474
zend_is_true(zval * op)475 ZEND_API int zend_is_true(zval *op) /* {{{ */
476 {
477 return i_zend_is_true(op);
478 }
479 /* }}} */
480
481 #include "../TSRM/tsrm_strtok_r.h"
482
483 #define IS_VISITED_CONSTANT IS_CONSTANT_INDEX
484 #define IS_CONSTANT_VISITED(p) (Z_TYPE_P(p) & IS_VISITED_CONSTANT)
485 #define Z_REAL_TYPE_P(p) (Z_TYPE_P(p) & ~IS_VISITED_CONSTANT)
486 #define MARK_CONSTANT_VISITED(p) Z_TYPE_P(p) |= IS_VISITED_CONSTANT
487
zval_deep_copy(zval ** p)488 static void zval_deep_copy(zval **p)
489 {
490 zval *value;
491
492 ALLOC_ZVAL(value);
493 *value = **p;
494 Z_TYPE_P(value) &= ~IS_CONSTANT_INDEX;
495 zval_copy_ctor(value);
496 Z_TYPE_P(value) = Z_TYPE_PP(p);
497 INIT_PZVAL(value);
498 *p = value;
499 }
500
zval_update_constant_ex(zval ** pp,void * arg,zend_class_entry * scope TSRMLS_DC)501 ZEND_API int zval_update_constant_ex(zval **pp, void *arg, zend_class_entry *scope TSRMLS_DC) /* {{{ */
502 {
503 zval *p = *pp;
504 zend_bool inline_change = (zend_bool) (zend_uintptr_t) arg;
505 zval const_value;
506 char *colon;
507
508 if (IS_CONSTANT_VISITED(p)) {
509 zend_error(E_ERROR, "Cannot declare self-referencing constant '%s'", Z_STRVAL_P(p));
510 } else if ((Z_TYPE_P(p) & IS_CONSTANT_TYPE_MASK) == IS_CONSTANT) {
511 int refcount;
512 zend_uchar is_ref;
513
514 SEPARATE_ZVAL_IF_NOT_REF(pp);
515 p = *pp;
516
517 MARK_CONSTANT_VISITED(p);
518
519 refcount = Z_REFCOUNT_P(p);
520 is_ref = Z_ISREF_P(p);
521
522 if (!zend_get_constant_ex(p->value.str.val, p->value.str.len, &const_value, scope, Z_REAL_TYPE_P(p) TSRMLS_CC)) {
523 char *actual = Z_STRVAL_P(p);
524
525 if ((colon = zend_memrchr(Z_STRVAL_P(p), ':', Z_STRLEN_P(p)))) {
526 zend_error(E_ERROR, "Undefined class constant '%s'", Z_STRVAL_P(p));
527 Z_STRLEN_P(p) -= ((colon - Z_STRVAL_P(p)) + 1);
528 if (inline_change) {
529 colon = estrndup(colon, Z_STRLEN_P(p));
530 efree(Z_STRVAL_P(p));
531 Z_STRVAL_P(p) = colon;
532 } else {
533 Z_STRVAL_P(p) = colon + 1;
534 }
535 } else {
536 char *save = actual, *slash;
537 int actual_len = Z_STRLEN_P(p);
538 if ((Z_TYPE_P(p) & IS_CONSTANT_UNQUALIFIED) && (slash = (char *)zend_memrchr(actual, '\\', actual_len))) {
539 actual = slash + 1;
540 actual_len -= (actual - Z_STRVAL_P(p));
541 if (inline_change) {
542 actual = estrndup(actual, actual_len);
543 Z_STRVAL_P(p) = actual;
544 Z_STRLEN_P(p) = actual_len;
545 }
546 }
547 if (actual[0] == '\\') {
548 if (inline_change) {
549 memmove(Z_STRVAL_P(p), Z_STRVAL_P(p)+1, Z_STRLEN_P(p));
550 --Z_STRLEN_P(p);
551 } else {
552 ++actual;
553 }
554 --actual_len;
555 }
556 if ((Z_TYPE_P(p) & IS_CONSTANT_UNQUALIFIED) == 0) {
557 int fix_save = 0;
558 if (save[0] == '\\') {
559 save++;
560 fix_save = 1;
561 }
562 zend_error(E_ERROR, "Undefined constant '%s'", save);
563 if (fix_save) {
564 save--;
565 }
566 if (inline_change) {
567 efree(save);
568 }
569 save = NULL;
570 }
571 if (inline_change && save && save != actual) {
572 efree(save);
573 }
574 zend_error(E_NOTICE, "Use of undefined constant %s - assumed '%s'", actual, actual);
575 p->type = IS_STRING;
576 if (!inline_change) {
577 Z_STRVAL_P(p) = actual;
578 Z_STRLEN_P(p) = actual_len;
579 zval_copy_ctor(p);
580 }
581 }
582 } else {
583 if (inline_change) {
584 STR_FREE(Z_STRVAL_P(p));
585 }
586 *p = const_value;
587 }
588
589 Z_SET_REFCOUNT_P(p, refcount);
590 Z_SET_ISREF_TO_P(p, is_ref);
591 } else if (Z_TYPE_P(p) == IS_CONSTANT_ARRAY) {
592 zval **element, *new_val;
593 char *str_index;
594 uint str_index_len;
595 ulong num_index;
596 int ret;
597
598 SEPARATE_ZVAL_IF_NOT_REF(pp);
599 p = *pp;
600 Z_TYPE_P(p) = IS_ARRAY;
601
602 if (!inline_change) {
603 zval *tmp;
604 HashTable *tmp_ht = NULL;
605
606 ALLOC_HASHTABLE(tmp_ht);
607 zend_hash_init(tmp_ht, zend_hash_num_elements(Z_ARRVAL_P(p)), NULL, ZVAL_PTR_DTOR, 0);
608 zend_hash_copy(tmp_ht, Z_ARRVAL_P(p), (copy_ctor_func_t) zval_deep_copy, (void *) &tmp, sizeof(zval *));
609 Z_ARRVAL_P(p) = tmp_ht;
610 }
611
612 /* First go over the array and see if there are any constant indices */
613 zend_hash_internal_pointer_reset(Z_ARRVAL_P(p));
614 while (zend_hash_get_current_data(Z_ARRVAL_P(p), (void **) &element) == SUCCESS) {
615 if (!(Z_TYPE_PP(element) & IS_CONSTANT_INDEX)) {
616 zend_hash_move_forward(Z_ARRVAL_P(p));
617 continue;
618 }
619 Z_TYPE_PP(element) &= ~IS_CONSTANT_INDEX;
620 if (zend_hash_get_current_key_ex(Z_ARRVAL_P(p), &str_index, &str_index_len, &num_index, 0, NULL) != HASH_KEY_IS_STRING) {
621 zend_hash_move_forward(Z_ARRVAL_P(p));
622 continue;
623 }
624 if (!zend_get_constant_ex(str_index, str_index_len - 3, &const_value, scope, str_index[str_index_len - 2] TSRMLS_CC)) {
625 char *actual, *save = str_index;
626 if ((colon = zend_memrchr(str_index, ':', str_index_len - 3))) {
627 zend_error(E_ERROR, "Undefined class constant '%s'", str_index);
628 str_index_len -= ((colon - str_index) + 1);
629 str_index = colon;
630 } else {
631 if (str_index[str_index_len - 2] & IS_CONSTANT_UNQUALIFIED) {
632 if ((actual = (char *)zend_memrchr(str_index, '\\', str_index_len - 3))) {
633 actual++;
634 str_index_len -= (actual - str_index);
635 str_index = actual;
636 }
637 }
638 if (str_index[0] == '\\') {
639 ++str_index;
640 --str_index_len;
641 }
642 if (save[0] == '\\') {
643 ++save;
644 }
645 if ((str_index[str_index_len - 2] & IS_CONSTANT_UNQUALIFIED) == 0) {
646 zend_error(E_ERROR, "Undefined constant '%s'", save);
647 }
648 zend_error(E_NOTICE, "Use of undefined constant %s - assumed '%s'", str_index, str_index);
649 }
650 ZVAL_STRINGL(&const_value, str_index, str_index_len-3, 1);
651 }
652
653 if (Z_REFCOUNT_PP(element) > 1) {
654 ALLOC_ZVAL(new_val);
655 *new_val = **element;
656 zval_copy_ctor(new_val);
657 Z_SET_REFCOUNT_P(new_val, 1);
658 Z_UNSET_ISREF_P(new_val);
659
660 /* preserve this bit for inheritance */
661 Z_TYPE_PP(element) |= IS_CONSTANT_INDEX;
662 zval_ptr_dtor(element);
663 *element = new_val;
664 }
665
666 switch (Z_TYPE(const_value)) {
667 case IS_STRING:
668 ret = zend_symtable_update_current_key(Z_ARRVAL_P(p), Z_STRVAL(const_value), Z_STRLEN(const_value) + 1, HASH_UPDATE_KEY_IF_BEFORE);
669 break;
670 case IS_BOOL:
671 case IS_LONG:
672 ret = zend_hash_update_current_key_ex(Z_ARRVAL_P(p), HASH_KEY_IS_LONG, NULL, 0, Z_LVAL(const_value), HASH_UPDATE_KEY_IF_BEFORE, NULL);
673 break;
674 case IS_DOUBLE:
675 ret = zend_hash_update_current_key_ex(Z_ARRVAL_P(p), HASH_KEY_IS_LONG, NULL, 0, zend_dval_to_lval(Z_DVAL(const_value)), HASH_UPDATE_KEY_IF_BEFORE, NULL);
676 break;
677 case IS_NULL:
678 ret = zend_hash_update_current_key_ex(Z_ARRVAL_P(p), HASH_KEY_IS_STRING, "", 1, 0, HASH_UPDATE_KEY_IF_BEFORE, NULL);
679 break;
680 default:
681 ret = SUCCESS;
682 break;
683 }
684 if (ret == SUCCESS) {
685 zend_hash_move_forward(Z_ARRVAL_P(p));
686 }
687 zval_dtor(&const_value);
688 }
689 zend_hash_apply_with_argument(Z_ARRVAL_P(p), (apply_func_arg_t) zval_update_constant_inline_change, (void *) scope TSRMLS_CC);
690 zend_hash_internal_pointer_reset(Z_ARRVAL_P(p));
691 }
692 return 0;
693 }
694 /* }}} */
695
zval_update_constant_inline_change(zval ** pp,void * scope TSRMLS_DC)696 ZEND_API int zval_update_constant_inline_change(zval **pp, void *scope TSRMLS_DC) /* {{{ */
697 {
698 return zval_update_constant_ex(pp, (void*)1, scope TSRMLS_CC);
699 }
700 /* }}} */
701
zval_update_constant_no_inline_change(zval ** pp,void * scope TSRMLS_DC)702 ZEND_API int zval_update_constant_no_inline_change(zval **pp, void *scope TSRMLS_DC) /* {{{ */
703 {
704 return zval_update_constant_ex(pp, (void*)0, scope TSRMLS_CC);
705 }
706 /* }}} */
707
zval_update_constant(zval ** pp,void * arg TSRMLS_DC)708 ZEND_API int zval_update_constant(zval **pp, void *arg TSRMLS_DC) /* {{{ */
709 {
710 return zval_update_constant_ex(pp, arg, NULL TSRMLS_CC);
711 }
712 /* }}} */
713
call_user_function(HashTable * function_table,zval ** object_pp,zval * function_name,zval * retval_ptr,zend_uint param_count,zval * params[]TSRMLS_DC)714 int call_user_function(HashTable *function_table, zval **object_pp, zval *function_name, zval *retval_ptr, zend_uint param_count, zval *params[] TSRMLS_DC) /* {{{ */
715 {
716 zval ***params_array;
717 zend_uint i;
718 int ex_retval;
719 zval *local_retval_ptr = NULL;
720
721 if (param_count) {
722 params_array = (zval ***) emalloc(sizeof(zval **)*param_count);
723 for (i=0; i<param_count; i++) {
724 params_array[i] = ¶ms[i];
725 }
726 } else {
727 params_array = NULL;
728 }
729 ex_retval = call_user_function_ex(function_table, object_pp, function_name, &local_retval_ptr, param_count, params_array, 1, NULL TSRMLS_CC);
730 if (local_retval_ptr) {
731 COPY_PZVAL_TO_ZVAL(*retval_ptr, local_retval_ptr);
732 } else {
733 INIT_ZVAL(*retval_ptr);
734 }
735 if (params_array) {
736 efree(params_array);
737 }
738 return ex_retval;
739 }
740 /* }}} */
741
call_user_function_ex(HashTable * function_table,zval ** object_pp,zval * function_name,zval ** retval_ptr_ptr,zend_uint param_count,zval ** params[],int no_separation,HashTable * symbol_table TSRMLS_DC)742 int call_user_function_ex(HashTable *function_table, zval **object_pp, zval *function_name, zval **retval_ptr_ptr, zend_uint param_count, zval **params[], int no_separation, HashTable *symbol_table TSRMLS_DC) /* {{{ */
743 {
744 zend_fcall_info fci;
745
746 fci.size = sizeof(fci);
747 fci.function_table = function_table;
748 fci.object_ptr = object_pp ? *object_pp : NULL;
749 fci.function_name = function_name;
750 fci.retval_ptr_ptr = retval_ptr_ptr;
751 fci.param_count = param_count;
752 fci.params = params;
753 fci.no_separation = (zend_bool) no_separation;
754 fci.symbol_table = symbol_table;
755
756 return zend_call_function(&fci, NULL TSRMLS_CC);
757 }
758 /* }}} */
759
zend_call_function(zend_fcall_info * fci,zend_fcall_info_cache * fci_cache TSRMLS_DC)760 int zend_call_function(zend_fcall_info *fci, zend_fcall_info_cache *fci_cache TSRMLS_DC) /* {{{ */
761 {
762 zend_uint i;
763 zval **original_return_value;
764 HashTable *calling_symbol_table;
765 zend_op_array *original_op_array;
766 zend_op **original_opline_ptr;
767 zend_class_entry *current_scope;
768 zend_class_entry *current_called_scope;
769 zend_class_entry *calling_scope = NULL;
770 zend_class_entry *called_scope = NULL;
771 zval *current_this;
772 zend_execute_data execute_data;
773
774 *fci->retval_ptr_ptr = NULL;
775
776 if (!EG(active)) {
777 return FAILURE; /* executor is already inactive */
778 }
779
780 if (EG(exception)) {
781 return FAILURE; /* we would result in an instable executor otherwise */
782 }
783
784 switch (fci->size) {
785 case sizeof(zend_fcall_info):
786 break; /* nothing to do currently */
787 default:
788 zend_error(E_ERROR, "Corrupted fcall_info provided to zend_call_function()");
789 break;
790 }
791
792 /* Initialize execute_data */
793 if (EG(current_execute_data)) {
794 execute_data = *EG(current_execute_data);
795 EX(op_array) = NULL;
796 EX(opline) = NULL;
797 EX(object) = NULL;
798 } else {
799 /* This only happens when we're called outside any execute()'s
800 * It shouldn't be strictly necessary to NULL execute_data out,
801 * but it may make bugs easier to spot
802 */
803 memset(&execute_data, 0, sizeof(zend_execute_data));
804 }
805
806 if (!fci_cache || !fci_cache->initialized) {
807 zend_fcall_info_cache fci_cache_local;
808 char *callable_name;
809 char *error = NULL;
810
811 if (!fci_cache) {
812 fci_cache = &fci_cache_local;
813 }
814
815 if (!zend_is_callable_ex(fci->function_name, fci->object_ptr, IS_CALLABLE_CHECK_SILENT, &callable_name, NULL, fci_cache, &error TSRMLS_CC)) {
816 if (error) {
817 zend_error(E_WARNING, "Invalid callback %s, %s", callable_name, error);
818 efree(error);
819 }
820 if (callable_name) {
821 efree(callable_name);
822 }
823 return FAILURE;
824 } else if (error) {
825 /* Capitalize the first latter of the error message */
826 if (error[0] >= 'a' && error[0] <= 'z') {
827 error[0] += ('A' - 'a');
828 }
829 zend_error(E_STRICT, "%s", error);
830 efree(error);
831 }
832 efree(callable_name);
833 }
834
835 EX(function_state).function = fci_cache->function_handler;
836 calling_scope = fci_cache->calling_scope;
837 called_scope = fci_cache->called_scope;
838 fci->object_ptr = fci_cache->object_ptr;
839 EX(object) = fci->object_ptr;
840 if (fci->object_ptr && Z_TYPE_P(fci->object_ptr) == IS_OBJECT &&
841 (!EG(objects_store).object_buckets || !EG(objects_store).object_buckets[Z_OBJ_HANDLE_P(fci->object_ptr)].valid)) {
842 return FAILURE;
843 }
844
845 if (EX(function_state).function->common.fn_flags & (ZEND_ACC_ABSTRACT|ZEND_ACC_DEPRECATED)) {
846 if (EX(function_state).function->common.fn_flags & ZEND_ACC_ABSTRACT) {
847 zend_error_noreturn(E_ERROR, "Cannot call abstract method %s::%s()", EX(function_state).function->common.scope->name, EX(function_state).function->common.function_name);
848 }
849 if (EX(function_state).function->common.fn_flags & ZEND_ACC_DEPRECATED) {
850 zend_error(E_DEPRECATED, "Function %s%s%s() is deprecated",
851 EX(function_state).function->common.scope ? EX(function_state).function->common.scope->name : "",
852 EX(function_state).function->common.scope ? "::" : "",
853 EX(function_state).function->common.function_name);
854 }
855 }
856
857 ZEND_VM_STACK_GROW_IF_NEEDED(fci->param_count + 1);
858
859 for (i=0; i<fci->param_count; i++) {
860 zval *param;
861
862 if (EX(function_state).function->type == ZEND_INTERNAL_FUNCTION
863 && (EX(function_state).function->common.fn_flags & ZEND_ACC_CALL_VIA_HANDLER) == 0
864 && !ARG_SHOULD_BE_SENT_BY_REF(EX(function_state).function, i + 1)
865 && PZVAL_IS_REF(*fci->params[i])) {
866 ALLOC_ZVAL(param);
867 *param = **(fci->params[i]);
868 INIT_PZVAL(param);
869 zval_copy_ctor(param);
870 } else if (ARG_SHOULD_BE_SENT_BY_REF(EX(function_state).function, i + 1)
871 && !PZVAL_IS_REF(*fci->params[i])) {
872
873 if (Z_REFCOUNT_PP(fci->params[i]) > 1) {
874 zval *new_zval;
875
876 if (fci->no_separation &&
877 !ARG_MAY_BE_SENT_BY_REF(EX(function_state).function, i + 1)) {
878 if (i || UNEXPECTED(ZEND_VM_STACK_ELEMETS(EG(argument_stack)) == EG(argument_stack)->top)) {
879 /* hack to clean up the stack */
880 zend_vm_stack_push_nocheck((void *) (zend_uintptr_t)i TSRMLS_CC);
881 zend_vm_stack_clear_multiple(TSRMLS_C);
882 }
883
884 zend_error(E_WARNING, "Parameter %d to %s%s%s() expected to be a reference, value given",
885 i+1,
886 EX(function_state).function->common.scope ? EX(function_state).function->common.scope->name : "",
887 EX(function_state).function->common.scope ? "::" : "",
888 EX(function_state).function->common.function_name);
889 return FAILURE;
890 }
891
892 ALLOC_ZVAL(new_zval);
893 *new_zval = **fci->params[i];
894 zval_copy_ctor(new_zval);
895 Z_SET_REFCOUNT_P(new_zval, 1);
896 Z_DELREF_PP(fci->params[i]);
897 *fci->params[i] = new_zval;
898 }
899 Z_ADDREF_PP(fci->params[i]);
900 Z_SET_ISREF_PP(fci->params[i]);
901 param = *fci->params[i];
902 } else if (*fci->params[i] != &EG(uninitialized_zval)) {
903 Z_ADDREF_PP(fci->params[i]);
904 param = *fci->params[i];
905 } else {
906 ALLOC_ZVAL(param);
907 *param = **(fci->params[i]);
908 INIT_PZVAL(param);
909 }
910 zend_vm_stack_push_nocheck(param TSRMLS_CC);
911 }
912
913 EX(function_state).arguments = zend_vm_stack_top(TSRMLS_C);
914 zend_vm_stack_push_nocheck((void*)(zend_uintptr_t)fci->param_count TSRMLS_CC);
915
916 current_scope = EG(scope);
917 EG(scope) = calling_scope;
918
919 current_this = EG(This);
920
921 current_called_scope = EG(called_scope);
922 if (called_scope) {
923 EG(called_scope) = called_scope;
924 } else if (EX(function_state).function->type != ZEND_INTERNAL_FUNCTION) {
925 EG(called_scope) = NULL;
926 }
927
928 if (fci->object_ptr) {
929 if ((EX(function_state).function->common.fn_flags & ZEND_ACC_STATIC)) {
930 EG(This) = NULL;
931 } else {
932 EG(This) = fci->object_ptr;
933
934 if (!PZVAL_IS_REF(EG(This))) {
935 Z_ADDREF_P(EG(This)); /* For $this pointer */
936 } else {
937 zval *this_ptr;
938
939 ALLOC_ZVAL(this_ptr);
940 *this_ptr = *EG(This);
941 INIT_PZVAL(this_ptr);
942 zval_copy_ctor(this_ptr);
943 EG(This) = this_ptr;
944 }
945 }
946 } else {
947 EG(This) = NULL;
948 }
949
950 EX(prev_execute_data) = EG(current_execute_data);
951 EG(current_execute_data) = &execute_data;
952
953 if (EX(function_state).function->type == ZEND_USER_FUNCTION) {
954 calling_symbol_table = EG(active_symbol_table);
955 EG(scope) = EX(function_state).function->common.scope;
956 if (fci->symbol_table) {
957 EG(active_symbol_table) = fci->symbol_table;
958 } else {
959 EG(active_symbol_table) = NULL;
960 }
961
962 original_return_value = EG(return_value_ptr_ptr);
963 original_op_array = EG(active_op_array);
964 EG(return_value_ptr_ptr) = fci->retval_ptr_ptr;
965 EG(active_op_array) = (zend_op_array *) EX(function_state).function;
966 original_opline_ptr = EG(opline_ptr);
967 zend_execute(EG(active_op_array) TSRMLS_CC);
968 if (!fci->symbol_table && EG(active_symbol_table)) {
969 if (EG(symtable_cache_ptr)>=EG(symtable_cache_limit)) {
970 zend_hash_destroy(EG(active_symbol_table));
971 FREE_HASHTABLE(EG(active_symbol_table));
972 } else {
973 /* clean before putting into the cache, since clean
974 could call dtors, which could use cached hash */
975 zend_hash_clean(EG(active_symbol_table));
976 *(++EG(symtable_cache_ptr)) = EG(active_symbol_table);
977 }
978 }
979 EG(active_symbol_table) = calling_symbol_table;
980 EG(active_op_array) = original_op_array;
981 EG(return_value_ptr_ptr)=original_return_value;
982 EG(opline_ptr) = original_opline_ptr;
983 } else if (EX(function_state).function->type == ZEND_INTERNAL_FUNCTION) {
984 int call_via_handler = (EX(function_state).function->common.fn_flags & ZEND_ACC_CALL_VIA_HANDLER) != 0;
985 ALLOC_INIT_ZVAL(*fci->retval_ptr_ptr);
986 if (EX(function_state).function->common.scope) {
987 EG(scope) = EX(function_state).function->common.scope;
988 }
989 ((zend_internal_function *) EX(function_state).function)->handler(fci->param_count, *fci->retval_ptr_ptr, fci->retval_ptr_ptr, fci->object_ptr, 1 TSRMLS_CC);
990 /* We shouldn't fix bad extensions here,
991 because it can break proper ones (Bug #34045)
992 if (!EX(function_state).function->common.return_reference)
993 {
994 INIT_PZVAL(*fci->retval_ptr_ptr);
995 }*/
996 if (EG(exception) && fci->retval_ptr_ptr) {
997 zval_ptr_dtor(fci->retval_ptr_ptr);
998 *fci->retval_ptr_ptr = NULL;
999 }
1000
1001 if (call_via_handler) {
1002 /* We must re-initialize function again */
1003 fci_cache->initialized = 0;
1004 }
1005 } else { /* ZEND_OVERLOADED_FUNCTION */
1006 ALLOC_INIT_ZVAL(*fci->retval_ptr_ptr);
1007
1008 /* Not sure what should be done here if it's a static method */
1009 if (fci->object_ptr) {
1010 Z_OBJ_HT_P(fci->object_ptr)->call_method(EX(function_state).function->common.function_name, fci->param_count, *fci->retval_ptr_ptr, fci->retval_ptr_ptr, fci->object_ptr, 1 TSRMLS_CC);
1011 } else {
1012 zend_error_noreturn(E_ERROR, "Cannot call overloaded function for non-object");
1013 }
1014
1015 if (EX(function_state).function->type == ZEND_OVERLOADED_FUNCTION_TEMPORARY) {
1016 efree(EX(function_state).function->common.function_name);
1017 }
1018 efree(EX(function_state).function);
1019
1020 if (EG(exception) && fci->retval_ptr_ptr) {
1021 zval_ptr_dtor(fci->retval_ptr_ptr);
1022 *fci->retval_ptr_ptr = NULL;
1023 }
1024 }
1025 zend_vm_stack_clear_multiple(TSRMLS_C);
1026
1027 if (EG(This)) {
1028 zval_ptr_dtor(&EG(This));
1029 }
1030 EG(called_scope) = current_called_scope;
1031 EG(scope) = current_scope;
1032 EG(This) = current_this;
1033 EG(current_execute_data) = EX(prev_execute_data);
1034
1035 if (EG(exception)) {
1036 zend_throw_exception_internal(NULL TSRMLS_CC);
1037 }
1038 return SUCCESS;
1039 }
1040 /* }}} */
1041
zend_lookup_class_ex(const char * name,int name_length,int use_autoload,zend_class_entry *** ce TSRMLS_DC)1042 ZEND_API int zend_lookup_class_ex(const char *name, int name_length, int use_autoload, zend_class_entry ***ce TSRMLS_DC) /* {{{ */
1043 {
1044 zval **args[1];
1045 zval autoload_function;
1046 zval *class_name_ptr;
1047 zval *retval_ptr = NULL;
1048 int retval, lc_length;
1049 char *lc_name;
1050 char *lc_free;
1051 zend_fcall_info fcall_info;
1052 zend_fcall_info_cache fcall_cache;
1053 char dummy = 1;
1054 ulong hash;
1055 ALLOCA_FLAG(use_heap)
1056
1057 if (name == NULL || !name_length) {
1058 return FAILURE;
1059 }
1060
1061 lc_free = lc_name = do_alloca(name_length + 1, use_heap);
1062 zend_str_tolower_copy(lc_name, name, name_length);
1063 lc_length = name_length + 1;
1064
1065 if (lc_name[0] == '\\') {
1066 lc_name += 1;
1067 lc_length -= 1;
1068 }
1069
1070 hash = zend_inline_hash_func(lc_name, lc_length);
1071
1072 if (zend_hash_quick_find(EG(class_table), lc_name, lc_length, hash, (void **) ce) == SUCCESS) {
1073 free_alloca(lc_free, use_heap);
1074 return SUCCESS;
1075 }
1076
1077 /* The compiler is not-reentrant. Make sure we __autoload() only during run-time
1078 * (doesn't impact fuctionality of __autoload()
1079 */
1080 if (!use_autoload || zend_is_compiling(TSRMLS_C)) {
1081 free_alloca(lc_free, use_heap);
1082 return FAILURE;
1083 }
1084
1085 if (EG(in_autoload) == NULL) {
1086 ALLOC_HASHTABLE(EG(in_autoload));
1087 zend_hash_init(EG(in_autoload), 0, NULL, NULL, 0);
1088 }
1089
1090 if (zend_hash_quick_add(EG(in_autoload), lc_name, lc_length, hash, (void**)&dummy, sizeof(char), NULL) == FAILURE) {
1091 free_alloca(lc_free, use_heap);
1092 return FAILURE;
1093 }
1094
1095 ZVAL_STRINGL(&autoload_function, ZEND_AUTOLOAD_FUNC_NAME, sizeof(ZEND_AUTOLOAD_FUNC_NAME) - 1, 0);
1096
1097 ALLOC_ZVAL(class_name_ptr);
1098 INIT_PZVAL(class_name_ptr);
1099 if (name[0] == '\\') {
1100 ZVAL_STRINGL(class_name_ptr, name+1, name_length-1, 1);
1101 } else {
1102 ZVAL_STRINGL(class_name_ptr, name, name_length, 1);
1103 }
1104
1105 args[0] = &class_name_ptr;
1106
1107 fcall_info.size = sizeof(fcall_info);
1108 fcall_info.function_table = EG(function_table);
1109 fcall_info.function_name = &autoload_function;
1110 fcall_info.symbol_table = NULL;
1111 fcall_info.retval_ptr_ptr = &retval_ptr;
1112 fcall_info.param_count = 1;
1113 fcall_info.params = args;
1114 fcall_info.object_ptr = NULL;
1115 fcall_info.no_separation = 1;
1116
1117 fcall_cache.initialized = EG(autoload_func) ? 1 : 0;
1118 fcall_cache.function_handler = EG(autoload_func);
1119 fcall_cache.calling_scope = NULL;
1120 fcall_cache.called_scope = NULL;
1121 fcall_cache.object_ptr = NULL;
1122
1123 zend_exception_save(TSRMLS_C);
1124 retval = zend_call_function(&fcall_info, &fcall_cache TSRMLS_CC);
1125 zend_exception_restore(TSRMLS_C);
1126
1127 EG(autoload_func) = fcall_cache.function_handler;
1128
1129 zval_ptr_dtor(&class_name_ptr);
1130
1131 zend_hash_quick_del(EG(in_autoload), lc_name, lc_length, hash);
1132
1133 if (retval_ptr) {
1134 zval_ptr_dtor(&retval_ptr);
1135 }
1136
1137 if (retval == FAILURE) {
1138 free_alloca(lc_free, use_heap);
1139 return FAILURE;
1140 }
1141
1142 retval = zend_hash_quick_find(EG(class_table), lc_name, lc_length, hash, (void **) ce);
1143 free_alloca(lc_free, use_heap);
1144 return retval;
1145 }
1146 /* }}} */
1147
zend_lookup_class(const char * name,int name_length,zend_class_entry *** ce TSRMLS_DC)1148 ZEND_API int zend_lookup_class(const char *name, int name_length, zend_class_entry ***ce TSRMLS_DC) /* {{{ */
1149 {
1150 return zend_lookup_class_ex(name, name_length, 1, ce TSRMLS_CC);
1151 }
1152 /* }}} */
1153
zend_eval_stringl(char * str,int str_len,zval * retval_ptr,char * string_name TSRMLS_DC)1154 ZEND_API int zend_eval_stringl(char *str, int str_len, zval *retval_ptr, char *string_name TSRMLS_DC) /* {{{ */
1155 {
1156 zval pv;
1157 zend_op_array *new_op_array;
1158 zend_op_array *original_active_op_array = EG(active_op_array);
1159 zend_uint original_compiler_options;
1160 int retval;
1161
1162 if (retval_ptr) {
1163 Z_STRLEN(pv) = str_len + sizeof("return ;") - 1;
1164 Z_STRVAL(pv) = emalloc(Z_STRLEN(pv) + 1);
1165 memcpy(Z_STRVAL(pv), "return ", sizeof("return ") - 1);
1166 memcpy(Z_STRVAL(pv) + sizeof("return ") - 1, str, str_len);
1167 Z_STRVAL(pv)[Z_STRLEN(pv) - 1] = ';';
1168 Z_STRVAL(pv)[Z_STRLEN(pv)] = '\0';
1169 } else {
1170 Z_STRLEN(pv) = str_len;
1171 Z_STRVAL(pv) = str;
1172 }
1173 Z_TYPE(pv) = IS_STRING;
1174
1175 /*printf("Evaluating '%s'\n", pv.value.str.val);*/
1176
1177 original_compiler_options = CG(compiler_options);
1178 CG(compiler_options) = ZEND_COMPILE_DEFAULT_FOR_EVAL;
1179 new_op_array = zend_compile_string(&pv, string_name TSRMLS_CC);
1180 CG(compiler_options) = original_compiler_options;
1181
1182 if (new_op_array) {
1183 zval *local_retval_ptr=NULL;
1184 zval **original_return_value_ptr_ptr = EG(return_value_ptr_ptr);
1185 zend_op **original_opline_ptr = EG(opline_ptr);
1186 int orig_interactive = CG(interactive);
1187
1188 EG(return_value_ptr_ptr) = &local_retval_ptr;
1189 EG(active_op_array) = new_op_array;
1190 EG(no_extensions)=1;
1191 if (!EG(active_symbol_table)) {
1192 zend_rebuild_symbol_table(TSRMLS_C);
1193 }
1194 CG(interactive) = 0;
1195
1196 zend_execute(new_op_array TSRMLS_CC);
1197
1198 CG(interactive) = orig_interactive;
1199 if (local_retval_ptr) {
1200 if (retval_ptr) {
1201 COPY_PZVAL_TO_ZVAL(*retval_ptr, local_retval_ptr);
1202 } else {
1203 zval_ptr_dtor(&local_retval_ptr);
1204 }
1205 } else {
1206 if (retval_ptr) {
1207 INIT_ZVAL(*retval_ptr);
1208 }
1209 }
1210
1211 EG(no_extensions)=0;
1212 EG(opline_ptr) = original_opline_ptr;
1213 EG(active_op_array) = original_active_op_array;
1214 destroy_op_array(new_op_array TSRMLS_CC);
1215 efree(new_op_array);
1216 EG(return_value_ptr_ptr) = original_return_value_ptr_ptr;
1217 retval = SUCCESS;
1218 } else {
1219 retval = FAILURE;
1220 }
1221 if (retval_ptr) {
1222 zval_dtor(&pv);
1223 }
1224 return retval;
1225 }
1226 /* }}} */
1227
zend_eval_string(char * str,zval * retval_ptr,char * string_name TSRMLS_DC)1228 ZEND_API int zend_eval_string(char *str, zval *retval_ptr, char *string_name TSRMLS_DC) /* {{{ */
1229 {
1230 return zend_eval_stringl(str, strlen(str), retval_ptr, string_name TSRMLS_CC);
1231 }
1232 /* }}} */
1233
zend_eval_stringl_ex(char * str,int str_len,zval * retval_ptr,char * string_name,int handle_exceptions TSRMLS_DC)1234 ZEND_API int zend_eval_stringl_ex(char *str, int str_len, zval *retval_ptr, char *string_name, int handle_exceptions TSRMLS_DC) /* {{{ */
1235 {
1236 int result;
1237
1238 result = zend_eval_stringl(str, str_len, retval_ptr, string_name TSRMLS_CC);
1239 if (handle_exceptions && EG(exception)) {
1240 zend_exception_error(EG(exception), E_ERROR TSRMLS_CC);
1241 result = FAILURE;
1242 }
1243 return result;
1244 }
1245 /* }}} */
1246
zend_eval_string_ex(char * str,zval * retval_ptr,char * string_name,int handle_exceptions TSRMLS_DC)1247 ZEND_API int zend_eval_string_ex(char *str, zval *retval_ptr, char *string_name, int handle_exceptions TSRMLS_DC) /* {{{ */
1248 {
1249 return zend_eval_stringl_ex(str, strlen(str), retval_ptr, string_name, handle_exceptions TSRMLS_CC);
1250 }
1251 /* }}} */
1252
execute_new_code(TSRMLS_D)1253 void execute_new_code(TSRMLS_D) /* {{{ */
1254 {
1255 zend_op *opline, *end;
1256 zend_op *ret_opline;
1257 int orig_interactive;
1258
1259 if (!(CG(active_op_array)->fn_flags & ZEND_ACC_INTERACTIVE)
1260 || CG(active_op_array)->backpatch_count>0
1261 || CG(active_op_array)->function_name
1262 || CG(active_op_array)->type!=ZEND_USER_FUNCTION) {
1263 return;
1264 }
1265
1266 ret_opline = get_next_op(CG(active_op_array) TSRMLS_CC);
1267 ret_opline->opcode = ZEND_RETURN;
1268 ret_opline->op1.op_type = IS_CONST;
1269 INIT_ZVAL(ret_opline->op1.u.constant);
1270 SET_UNUSED(ret_opline->op2);
1271
1272 if (!CG(active_op_array)->start_op) {
1273 CG(active_op_array)->start_op = CG(active_op_array)->opcodes;
1274 }
1275
1276 opline=CG(active_op_array)->start_op;
1277 end=CG(active_op_array)->opcodes+CG(active_op_array)->last;
1278
1279 while (opline<end) {
1280 if (opline->op1.op_type == IS_CONST) {
1281 Z_SET_ISREF(opline->op1.u.constant);
1282 Z_SET_REFCOUNT(opline->op1.u.constant, 2); /* Make sure is_ref won't be reset */
1283 }
1284 if (opline->op2.op_type == IS_CONST) {
1285 Z_SET_ISREF(opline->op2.u.constant);
1286 Z_SET_REFCOUNT(opline->op2.u.constant, 2);
1287 }
1288 switch (opline->opcode) {
1289 case ZEND_GOTO:
1290 if (Z_TYPE(opline->op2.u.constant) != IS_LONG) {
1291 zend_resolve_goto_label(CG(active_op_array), opline, 1 TSRMLS_CC);
1292 }
1293 /* break omitted intentionally */
1294 case ZEND_JMP:
1295 opline->op1.u.jmp_addr = &CG(active_op_array)->opcodes[opline->op1.u.opline_num];
1296 break;
1297 case ZEND_JMPZ:
1298 case ZEND_JMPNZ:
1299 case ZEND_JMPZ_EX:
1300 case ZEND_JMPNZ_EX:
1301 case ZEND_JMP_SET:
1302 opline->op2.u.jmp_addr = &CG(active_op_array)->opcodes[opline->op2.u.opline_num];
1303 break;
1304 }
1305 ZEND_VM_SET_OPCODE_HANDLER(opline);
1306 opline++;
1307 }
1308
1309 zend_release_labels(TSRMLS_C);
1310
1311 EG(return_value_ptr_ptr) = NULL;
1312 EG(active_op_array) = CG(active_op_array);
1313 orig_interactive = CG(interactive);
1314 CG(interactive) = 0;
1315 zend_execute(CG(active_op_array) TSRMLS_CC);
1316 CG(interactive) = orig_interactive;
1317
1318 if (EG(exception)) {
1319 zend_exception_error(EG(exception), E_ERROR TSRMLS_CC);
1320 }
1321
1322 CG(active_op_array)->last -= 1; /* get rid of that ZEND_RETURN */
1323 CG(active_op_array)->start_op = CG(active_op_array)->opcodes+CG(active_op_array)->last;
1324 }
1325 /* }}} */
1326
zend_timeout(int dummy)1327 ZEND_API void zend_timeout(int dummy) /* {{{ */
1328 {
1329 TSRMLS_FETCH();
1330
1331 if (zend_on_timeout) {
1332 zend_on_timeout(EG(timeout_seconds) TSRMLS_CC);
1333 }
1334
1335 zend_error(E_ERROR, "Maximum execution time of %d second%s exceeded", EG(timeout_seconds), EG(timeout_seconds) == 1 ? "" : "s");
1336 }
1337 /* }}} */
1338
1339 #ifdef ZEND_WIN32
zend_timeout_WndProc(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam)1340 static LRESULT CALLBACK zend_timeout_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) /* {{{ */
1341 {
1342 switch (message) {
1343 case WM_DESTROY:
1344 PostQuitMessage(0);
1345 break;
1346 case WM_REGISTER_ZEND_TIMEOUT:
1347 /* wParam is the thread id pointer, lParam is the timeout amount in seconds */
1348 if (lParam == 0) {
1349 KillTimer(timeout_window, wParam);
1350 } else {
1351 #ifdef ZTS
1352 void ***tsrm_ls;
1353 #endif
1354 SetTimer(timeout_window, wParam, lParam*1000, NULL);
1355 #ifdef ZTS
1356 tsrm_ls = ts_resource_ex(0, &wParam);
1357 if (!tsrm_ls) {
1358 /* shouldn't normally happen */
1359 break;
1360 }
1361 #endif
1362 EG(timed_out) = 0;
1363 }
1364 break;
1365 case WM_UNREGISTER_ZEND_TIMEOUT:
1366 /* wParam is the thread id pointer */
1367 KillTimer(timeout_window, wParam);
1368 break;
1369 case WM_TIMER: {
1370 #ifdef ZTS
1371 void ***tsrm_ls;
1372
1373 tsrm_ls = ts_resource_ex(0, &wParam);
1374 if (!tsrm_ls) {
1375 /* Thread died before receiving its timeout? */
1376 break;
1377 }
1378 #endif
1379 KillTimer(timeout_window, wParam);
1380 EG(timed_out) = 1;
1381 }
1382 break;
1383 default:
1384 return DefWindowProc(hWnd, message, wParam, lParam);
1385 }
1386 return 0;
1387 }
1388 /* }}} */
1389
timeout_thread_proc(void * pArgs)1390 static unsigned __stdcall timeout_thread_proc(void *pArgs) /* {{{ */
1391 {
1392 MSG message;
1393
1394 wc.style=0;
1395 wc.lpfnWndProc = zend_timeout_WndProc;
1396 wc.cbClsExtra=0;
1397 wc.cbWndExtra=0;
1398 wc.hInstance=NULL;
1399 wc.hIcon=NULL;
1400 wc.hCursor=NULL;
1401 wc.hbrBackground=(HBRUSH)(COLOR_BACKGROUND + 5);
1402 wc.lpszMenuName=NULL;
1403 wc.lpszClassName = "Zend Timeout Window";
1404 if (!RegisterClass(&wc)) {
1405 return -1;
1406 }
1407 timeout_window = CreateWindow(wc.lpszClassName, wc.lpszClassName, 0, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, NULL, NULL);
1408 SetEvent(timeout_thread_event);
1409 while (GetMessage(&message, NULL, 0, 0)) {
1410 SendMessage(timeout_window, message.message, message.wParam, message.lParam);
1411 if (message.message == WM_QUIT) {
1412 break;
1413 }
1414 }
1415 DestroyWindow(timeout_window);
1416 UnregisterClass(wc.lpszClassName, NULL);
1417 SetEvent(timeout_thread_handle);
1418 return 0;
1419 }
1420 /* }}} */
1421
zend_init_timeout_thread(void)1422 void zend_init_timeout_thread(void) /* {{{ */
1423 {
1424 timeout_thread_event = CreateEvent(NULL, FALSE, FALSE, NULL);
1425 timeout_thread_handle = CreateEvent(NULL, FALSE, FALSE, NULL);
1426 _beginthreadex(NULL, 0, timeout_thread_proc, NULL, 0, &timeout_thread_id);
1427 WaitForSingleObject(timeout_thread_event, INFINITE);
1428 }
1429 /* }}} */
1430
zend_shutdown_timeout_thread(void)1431 void zend_shutdown_timeout_thread(void) /* {{{ */
1432 {
1433 if (!timeout_thread_initialized) {
1434 return;
1435 }
1436 PostThreadMessage(timeout_thread_id, WM_QUIT, 0, 0);
1437
1438 /* Wait for thread termination */
1439 WaitForSingleObject(timeout_thread_handle, 5000);
1440 CloseHandle(timeout_thread_handle);
1441 timeout_thread_initialized = 0;
1442 }
1443 /* }}} */
1444
1445 #endif
1446
1447 /* This one doesn't exists on QNX */
1448 #ifndef SIGPROF
1449 #define SIGPROF 27
1450 #endif
1451
zend_set_timeout(long seconds,int reset_signals)1452 void zend_set_timeout(long seconds, int reset_signals) /* {{{ */
1453 {
1454 TSRMLS_FETCH();
1455
1456 EG(timeout_seconds) = seconds;
1457
1458 #ifdef ZEND_WIN32
1459 if(!seconds) {
1460 return;
1461 }
1462 if (timeout_thread_initialized == 0 && InterlockedIncrement(&timeout_thread_initialized) == 1) {
1463 /* We start up this process-wide thread here and not in zend_startup(), because if Zend
1464 * is initialized inside a DllMain(), you're not supposed to start threads from it.
1465 */
1466 zend_init_timeout_thread();
1467 }
1468 PostThreadMessage(timeout_thread_id, WM_REGISTER_ZEND_TIMEOUT, (WPARAM) GetCurrentThreadId(), (LPARAM) seconds);
1469 #else
1470 # ifdef HAVE_SETITIMER
1471 {
1472 struct itimerval t_r; /* timeout requested */
1473 sigset_t sigset;
1474
1475 if(seconds) {
1476 t_r.it_value.tv_sec = seconds;
1477 t_r.it_value.tv_usec = t_r.it_interval.tv_sec = t_r.it_interval.tv_usec = 0;
1478
1479 # ifdef __CYGWIN__
1480 setitimer(ITIMER_REAL, &t_r, NULL);
1481 }
1482 if(reset_signals) {
1483 signal(SIGALRM, zend_timeout);
1484 sigemptyset(&sigset);
1485 sigaddset(&sigset, SIGALRM);
1486 }
1487 # else
1488 setitimer(ITIMER_PROF, &t_r, NULL);
1489 }
1490 if(reset_signals) {
1491 signal(SIGPROF, zend_timeout);
1492 sigemptyset(&sigset);
1493 sigaddset(&sigset, SIGPROF);
1494 }
1495 # endif
1496 if(reset_signals) {
1497 sigprocmask(SIG_UNBLOCK, &sigset, NULL);
1498 }
1499 }
1500 # endif
1501 #endif
1502 }
1503 /* }}} */
1504
zend_unset_timeout(TSRMLS_D)1505 void zend_unset_timeout(TSRMLS_D) /* {{{ */
1506 {
1507 #ifdef ZEND_WIN32
1508 if(timeout_thread_initialized) {
1509 PostThreadMessage(timeout_thread_id, WM_UNREGISTER_ZEND_TIMEOUT, (WPARAM) GetCurrentThreadId(), (LPARAM) 0);
1510 }
1511 #else
1512 # ifdef HAVE_SETITIMER
1513 if (EG(timeout_seconds)) {
1514 struct itimerval no_timeout;
1515
1516 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;
1517
1518 #ifdef __CYGWIN__
1519 setitimer(ITIMER_REAL, &no_timeout, NULL);
1520 #else
1521 setitimer(ITIMER_PROF, &no_timeout, NULL);
1522 #endif
1523 }
1524 # endif
1525 #endif
1526 }
1527 /* }}} */
1528
zend_fetch_class(const char * class_name,uint class_name_len,int fetch_type TSRMLS_DC)1529 zend_class_entry *zend_fetch_class(const char *class_name, uint class_name_len, int fetch_type TSRMLS_DC) /* {{{ */
1530 {
1531 zend_class_entry **pce;
1532 int use_autoload = (fetch_type & ZEND_FETCH_CLASS_NO_AUTOLOAD) == 0;
1533 int silent = (fetch_type & ZEND_FETCH_CLASS_SILENT) != 0;
1534
1535 fetch_type &= ZEND_FETCH_CLASS_MASK;
1536
1537 check_fetch_type:
1538 switch (fetch_type) {
1539 case ZEND_FETCH_CLASS_SELF:
1540 if (!EG(scope)) {
1541 zend_error(E_ERROR, "Cannot access self:: when no class scope is active");
1542 }
1543 return EG(scope);
1544 case ZEND_FETCH_CLASS_PARENT:
1545 if (!EG(scope)) {
1546 zend_error(E_ERROR, "Cannot access parent:: when no class scope is active");
1547 }
1548 if (!EG(scope)->parent) {
1549 zend_error(E_ERROR, "Cannot access parent:: when current class scope has no parent");
1550 }
1551 return EG(scope)->parent;
1552 case ZEND_FETCH_CLASS_STATIC:
1553 if (!EG(called_scope)) {
1554 zend_error(E_ERROR, "Cannot access static:: when no class scope is active");
1555 }
1556 return EG(called_scope);
1557 case ZEND_FETCH_CLASS_AUTO: {
1558 fetch_type = zend_get_class_fetch_type(class_name, class_name_len);
1559 if (fetch_type!=ZEND_FETCH_CLASS_DEFAULT) {
1560 goto check_fetch_type;
1561 }
1562 }
1563 break;
1564 }
1565
1566 if (zend_lookup_class_ex(class_name, class_name_len, use_autoload, &pce TSRMLS_CC) == FAILURE) {
1567 if (use_autoload) {
1568 if (!silent && !EG(exception)) {
1569 if (fetch_type == ZEND_FETCH_CLASS_INTERFACE) {
1570 zend_error(E_ERROR, "Interface '%s' not found", class_name);
1571 } else {
1572 zend_error(E_ERROR, "Class '%s' not found", class_name);
1573 }
1574 }
1575 }
1576 return NULL;
1577 }
1578 return *pce;
1579 }
1580 /* }}} */
1581
1582 #define MAX_ABSTRACT_INFO_CNT 3
1583 #define MAX_ABSTRACT_INFO_FMT "%s%s%s%s"
1584 #define DISPLAY_ABSTRACT_FN(idx) \
1585 ai.afn[idx] ? ZEND_FN_SCOPE_NAME(ai.afn[idx]) : "", \
1586 ai.afn[idx] ? "::" : "", \
1587 ai.afn[idx] ? ai.afn[idx]->common.function_name : "", \
1588 ai.afn[idx] && ai.afn[idx + 1] ? ", " : (ai.afn[idx] && ai.cnt > MAX_ABSTRACT_INFO_CNT ? ", ..." : "")
1589
1590 typedef struct _zend_abstract_info {
1591 zend_function *afn[MAX_ABSTRACT_INFO_CNT + 1];
1592 int cnt;
1593 int ctor;
1594 } zend_abstract_info;
1595
zend_verify_abstract_class_function(zend_function * fn,zend_abstract_info * ai TSRMLS_DC)1596 static int zend_verify_abstract_class_function(zend_function *fn, zend_abstract_info *ai TSRMLS_DC) /* {{{ */
1597 {
1598 if (fn->common.fn_flags & ZEND_ACC_ABSTRACT) {
1599 if (ai->cnt < MAX_ABSTRACT_INFO_CNT) {
1600 ai->afn[ai->cnt] = fn;
1601 }
1602 if (fn->common.fn_flags & ZEND_ACC_CTOR) {
1603 if (!ai->ctor) {
1604 ai->cnt++;
1605 ai->ctor = 1;
1606 } else {
1607 ai->afn[ai->cnt] = NULL;
1608 }
1609 } else {
1610 ai->cnt++;
1611 }
1612 }
1613 return 0;
1614 }
1615 /* }}} */
1616
zend_verify_abstract_class(zend_class_entry * ce TSRMLS_DC)1617 void zend_verify_abstract_class(zend_class_entry *ce TSRMLS_DC) /* {{{ */
1618 {
1619 zend_abstract_info ai;
1620
1621 if ((ce->ce_flags & ZEND_ACC_IMPLICIT_ABSTRACT_CLASS) && !(ce->ce_flags & ZEND_ACC_EXPLICIT_ABSTRACT_CLASS)) {
1622 memset(&ai, 0, sizeof(ai));
1623
1624 zend_hash_apply_with_argument(&ce->function_table, (apply_func_arg_t) zend_verify_abstract_class_function, &ai TSRMLS_CC);
1625
1626 if (ai.cnt) {
1627 zend_error(E_ERROR, "Class %s contains %d abstract method%s and must therefore be declared abstract or implement the remaining methods (" MAX_ABSTRACT_INFO_FMT MAX_ABSTRACT_INFO_FMT MAX_ABSTRACT_INFO_FMT ")",
1628 ce->name, ai.cnt,
1629 ai.cnt > 1 ? "s" : "",
1630 DISPLAY_ABSTRACT_FN(0),
1631 DISPLAY_ABSTRACT_FN(1),
1632 DISPLAY_ABSTRACT_FN(2)
1633 );
1634 }
1635 }
1636 }
1637 /* }}} */
1638
zend_reset_all_cv(HashTable * symbol_table TSRMLS_DC)1639 ZEND_API void zend_reset_all_cv(HashTable *symbol_table TSRMLS_DC) /* {{{ */
1640 {
1641 zend_execute_data *ex;
1642 int i;
1643
1644 for (ex = EG(current_execute_data); ex; ex = ex->prev_execute_data) {
1645 if (ex->op_array && ex->symbol_table == symbol_table) {
1646 for (i = 0; i < ex->op_array->last_var; i++) {
1647 ex->CVs[i] = NULL;
1648 }
1649 }
1650 }
1651 }
1652 /* }}} */
1653
zend_delete_global_variable(char * name,int name_len TSRMLS_DC)1654 ZEND_API int zend_delete_global_variable(char *name, int name_len TSRMLS_DC) /* {{{ */
1655 {
1656 zend_execute_data *ex;
1657 ulong hash_value = zend_inline_hash_func(name, name_len + 1);
1658
1659 if (zend_hash_quick_exists(&EG(symbol_table), name, name_len + 1, hash_value)) {
1660 for (ex = EG(current_execute_data); ex; ex = ex->prev_execute_data) {
1661 if (ex->op_array && ex->symbol_table == &EG(symbol_table)) {
1662 int i;
1663 for (i = 0; i < ex->op_array->last_var; i++) {
1664 if (ex->op_array->vars[i].hash_value == hash_value &&
1665 ex->op_array->vars[i].name_len == name_len &&
1666 !memcmp(ex->op_array->vars[i].name, name, name_len)
1667 ) {
1668 ex->CVs[i] = NULL;
1669 break;
1670 }
1671 }
1672 }
1673 }
1674 return zend_hash_quick_del(&EG(symbol_table), name, name_len + 1, hash_value);
1675 }
1676 return FAILURE;
1677 }
1678 /* }}} */
1679
zend_rebuild_symbol_table(TSRMLS_D)1680 ZEND_API void zend_rebuild_symbol_table(TSRMLS_D) /* {{{ */
1681 {
1682 zend_uint i;
1683 zend_execute_data *ex;
1684
1685 if (!EG(active_symbol_table)) {
1686
1687 /* Search for last called user function */
1688 ex = EG(current_execute_data);
1689 while (ex && !ex->op_array) {
1690 ex = ex->prev_execute_data;
1691 }
1692 if (ex && ex->symbol_table) {
1693 EG(active_symbol_table) = ex->symbol_table;
1694 return;
1695 }
1696
1697 if (ex && ex->op_array) {
1698 if (EG(symtable_cache_ptr)>=EG(symtable_cache)) {
1699 /*printf("Cache hit! Reusing %x\n", symtable_cache[symtable_cache_ptr]);*/
1700 EG(active_symbol_table) = *(EG(symtable_cache_ptr)--);
1701 } else {
1702 ALLOC_HASHTABLE(EG(active_symbol_table));
1703 zend_hash_init(EG(active_symbol_table), 0, NULL, ZVAL_PTR_DTOR, 0);
1704 /*printf("Cache miss! Initialized %x\n", EG(active_symbol_table));*/
1705 }
1706 ex->symbol_table = EG(active_symbol_table);
1707
1708 if (ex->op_array->this_var != -1 &&
1709 !ex->CVs[ex->op_array->this_var] &&
1710 EG(This)) {
1711 ex->CVs[ex->op_array->this_var] = (zval**)ex->CVs + ex->op_array->last_var + ex->op_array->this_var;
1712 *ex->CVs[ex->op_array->this_var] = EG(This);
1713 }
1714 for (i = 0; i < ex->op_array->last_var; i++) {
1715 if (ex->CVs[i]) {
1716 zend_hash_quick_update(EG(active_symbol_table),
1717 ex->op_array->vars[i].name,
1718 ex->op_array->vars[i].name_len + 1,
1719 ex->op_array->vars[i].hash_value,
1720 (void**)ex->CVs[i],
1721 sizeof(zval*),
1722 (void**)&ex->CVs[i]);
1723 }
1724 }
1725 }
1726 }
1727 }
1728 /* }}} */
1729
1730 /*
1731 * Local variables:
1732 * tab-width: 4
1733 * c-basic-offset: 4
1734 * indent-tabs-mode: t
1735 * End:
1736 */
1737
