1 /*
2 +----------------------------------------------------------------------+
3 | Zend Engine |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1998-2014 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 ZEND_API int clean_non_persistent_function_full(zend_function *function TSRMLS_DC) /* {{{ */
112 {
113 return (function->type == ZEND_INTERNAL_FUNCTION) ? ZEND_HASH_APPLY_KEEP : ZEND_HASH_APPLY_REMOVE;
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 ZEND_API int clean_non_persistent_class_full(zend_class_entry **ce TSRMLS_DC) /* {{{ */
124 {
125 return ((*ce)->type == ZEND_INTERNAL_CLASS) ? ZEND_HASH_APPLY_KEEP : ZEND_HASH_APPLY_REMOVE;
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 EG(active_symbol_table) = &EG(symbol_table);
163
164 zend_llist_apply(&zend_extensions, (llist_apply_func_t) zend_extension_activator TSRMLS_CC);
165 EG(opline_ptr) = NULL;
166
167 zend_hash_init(&EG(included_files), 5, NULL, NULL, 0);
168
169 EG(ticks_count) = 0;
170
171 EG(user_error_handler) = NULL;
172
173 EG(current_execute_data) = NULL;
174
175 zend_stack_init(&EG(user_error_handlers_error_reporting));
176 zend_ptr_stack_init(&EG(user_error_handlers));
177 zend_ptr_stack_init(&EG(user_exception_handlers));
178
179 zend_objects_store_init(&EG(objects_store), 1024);
180
181 EG(full_tables_cleanup) = 0;
182 #ifdef ZEND_WIN32
183 EG(timed_out) = 0;
184 #endif
185
186 EG(exception) = NULL;
187 EG(prev_exception) = NULL;
188
189 EG(scope) = NULL;
190 EG(called_scope) = NULL;
191
192 EG(This) = NULL;
193
194 EG(active_op_array) = NULL;
195
196 EG(active) = 1;
197 EG(start_op) = NULL;
198 }
199 /* }}} */
200
zval_call_destructor(zval ** zv TSRMLS_DC)201 static int zval_call_destructor(zval **zv TSRMLS_DC) /* {{{ */
202 {
203 if (Z_TYPE_PP(zv) == IS_OBJECT && Z_REFCOUNT_PP(zv) == 1) {
204 return ZEND_HASH_APPLY_REMOVE;
205 } else {
206 return ZEND_HASH_APPLY_KEEP;
207 }
208 }
209 /* }}} */
210
shutdown_destructors(TSRMLS_D)211 void shutdown_destructors(TSRMLS_D) /* {{{ */
212 {
213 zend_try {
214 int symbols;
215 do {
216 symbols = zend_hash_num_elements(&EG(symbol_table));
217 zend_hash_reverse_apply(&EG(symbol_table), (apply_func_t) zval_call_destructor TSRMLS_CC);
218 } while (symbols != zend_hash_num_elements(&EG(symbol_table)));
219 zend_objects_store_call_destructors(&EG(objects_store) TSRMLS_CC);
220 } zend_catch {
221 /* if we couldn't destruct cleanly, mark all objects as destructed anyway */
222 zend_objects_store_mark_destructed(&EG(objects_store) TSRMLS_CC);
223 } zend_end_try();
224 }
225 /* }}} */
226
shutdown_executor(TSRMLS_D)227 void shutdown_executor(TSRMLS_D) /* {{{ */
228 {
229 zend_try {
230
231 /* Removed because this can not be safely done, e.g. in this situation:
232 Object 1 creates object 2
233 Object 3 holds reference to object 2.
234 Now when 1 and 2 are destroyed, 3 can still access 2 in its destructor, with
235 very problematic results */
236 /* zend_objects_store_call_destructors(&EG(objects_store) TSRMLS_CC); */
237
238 /* Moved after symbol table cleaners, because some of the cleaners can call
239 destructors, which would use EG(symtable_cache_ptr) and thus leave leaks */
240 /* while (EG(symtable_cache_ptr)>=EG(symtable_cache)) {
241 zend_hash_destroy(*EG(symtable_cache_ptr));
242 efree(*EG(symtable_cache_ptr));
243 EG(symtable_cache_ptr)--;
244 }
245 */
246 zend_llist_apply(&zend_extensions, (llist_apply_func_t) zend_extension_deactivator TSRMLS_CC);
247 zend_hash_graceful_reverse_destroy(&EG(symbol_table));
248 } zend_end_try();
249
250 zend_try {
251 zval *zeh;
252 /* remove error handlers before destroying classes and functions,
253 * so that if handler used some class, crash would not happen */
254 if (EG(user_error_handler)) {
255 zeh = EG(user_error_handler);
256 EG(user_error_handler) = NULL;
257 zval_ptr_dtor(&zeh);
258 }
259
260 if (EG(user_exception_handler)) {
261 zeh = EG(user_exception_handler);
262 EG(user_exception_handler) = NULL;
263 zval_ptr_dtor(&zeh);
264 }
265
266 zend_stack_destroy(&EG(user_error_handlers_error_reporting));
267 zend_stack_init(&EG(user_error_handlers_error_reporting));
268 zend_ptr_stack_clean(&EG(user_error_handlers), ZVAL_DESTRUCTOR, 1);
269 zend_ptr_stack_clean(&EG(user_exception_handlers), ZVAL_DESTRUCTOR, 1);
270 } zend_end_try();
271
272 zend_try {
273 /* Cleanup static data for functions and arrays.
274 * We need a separate cleanup stage because of the following problem:
275 * Suppose we destroy class X, which destroys the class's function table,
276 * and in the function table we have function foo() that has static $bar.
277 * Now if an object of class X is assigned to $bar, its destructor will be
278 * called and will fail since X's function table is in mid-destruction.
279 * So we want first of all to clean up all data and then move to tables destruction.
280 * Note that only run-time accessed data need to be cleaned up, pre-defined data can
281 * not contain objects and thus are not probelmatic */
282 if (EG(full_tables_cleanup)) {
283 zend_hash_apply(EG(function_table), (apply_func_t) zend_cleanup_function_data_full TSRMLS_CC);
284 zend_hash_apply(EG(class_table), (apply_func_t) zend_cleanup_class_data TSRMLS_CC);
285 } else {
286 zend_hash_reverse_apply(EG(function_table), (apply_func_t) zend_cleanup_function_data TSRMLS_CC);
287 zend_hash_reverse_apply(EG(class_table), (apply_func_t) zend_cleanup_user_class_data TSRMLS_CC);
288 zend_cleanup_internal_classes(TSRMLS_C);
289 }
290 } zend_end_try();
291
292 zend_try {
293 zend_vm_stack_destroy(TSRMLS_C);
294
295 zend_objects_store_free_object_storage(&EG(objects_store) TSRMLS_CC);
296
297 /* Destroy all op arrays */
298 if (EG(full_tables_cleanup)) {
299 zend_hash_reverse_apply(EG(function_table), (apply_func_t) clean_non_persistent_function_full TSRMLS_CC);
300 zend_hash_reverse_apply(EG(class_table), (apply_func_t) clean_non_persistent_class_full TSRMLS_CC);
301 } else {
302 zend_hash_reverse_apply(EG(function_table), (apply_func_t) clean_non_persistent_function TSRMLS_CC);
303 zend_hash_reverse_apply(EG(class_table), (apply_func_t) clean_non_persistent_class TSRMLS_CC);
304 }
305
306 while (EG(symtable_cache_ptr)>=EG(symtable_cache)) {
307 zend_hash_destroy(*EG(symtable_cache_ptr));
308 FREE_HASHTABLE(*EG(symtable_cache_ptr));
309 EG(symtable_cache_ptr)--;
310 }
311 } zend_end_try();
312
313 zend_try {
314 clean_non_persistent_constants(TSRMLS_C);
315 } zend_end_try();
316
317 zend_try {
318 #if 0&&ZEND_DEBUG
319 signal(SIGSEGV, original_sigsegv_handler);
320 #endif
321
322 zend_hash_destroy(&EG(included_files));
323
324 zend_ptr_stack_destroy(&EG(arg_types_stack));
325 zend_stack_destroy(&EG(user_error_handlers_error_reporting));
326 zend_ptr_stack_destroy(&EG(user_error_handlers));
327 zend_ptr_stack_destroy(&EG(user_exception_handlers));
328 zend_objects_store_destroy(&EG(objects_store));
329 if (EG(in_autoload)) {
330 zend_hash_destroy(EG(in_autoload));
331 FREE_HASHTABLE(EG(in_autoload));
332 }
333 } zend_end_try();
334
335 zend_shutdown_fpu(TSRMLS_C);
336
337 EG(active) = 0;
338 }
339 /* }}} */
340
341 /* return class name and "::" or "". */
get_active_class_name(const char ** space TSRMLS_DC)342 ZEND_API const char *get_active_class_name(const char **space TSRMLS_DC) /* {{{ */
343 {
344 if (!zend_is_executing(TSRMLS_C)) {
345 if (space) {
346 *space = "";
347 }
348 return "";
349 }
350 switch (EG(current_execute_data)->function_state.function->type) {
351 case ZEND_USER_FUNCTION:
352 case ZEND_INTERNAL_FUNCTION:
353 {
354 zend_class_entry *ce = EG(current_execute_data)->function_state.function->common.scope;
355
356 if (space) {
357 *space = ce ? "::" : "";
358 }
359 return ce ? ce->name : "";
360 }
361 default:
362 if (space) {
363 *space = "";
364 }
365 return "";
366 }
367 }
368 /* }}} */
369
get_active_function_name(TSRMLS_D)370 ZEND_API const char *get_active_function_name(TSRMLS_D) /* {{{ */
371 {
372 if (!zend_is_executing(TSRMLS_C)) {
373 return NULL;
374 }
375 switch (EG(current_execute_data)->function_state.function->type) {
376 case ZEND_USER_FUNCTION: {
377 const char *function_name = ((zend_op_array *) EG(current_execute_data)->function_state.function)->function_name;
378
379 if (function_name) {
380 return function_name;
381 } else {
382 return "main";
383 }
384 }
385 break;
386 case ZEND_INTERNAL_FUNCTION:
387 return ((zend_internal_function *) EG(current_execute_data)->function_state.function)->function_name;
388 break;
389 default:
390 return NULL;
391 }
392 }
393 /* }}} */
394
zend_get_executed_filename(TSRMLS_D)395 ZEND_API const char *zend_get_executed_filename(TSRMLS_D) /* {{{ */
396 {
397 if (EG(active_op_array)) {
398 return EG(active_op_array)->filename;
399 } else {
400 return "[no active file]";
401 }
402 }
403 /* }}} */
404
zend_get_executed_lineno(TSRMLS_D)405 ZEND_API uint zend_get_executed_lineno(TSRMLS_D) /* {{{ */
406 {
407 if(EG(exception) && EG(opline_ptr) && active_opline->opcode == ZEND_HANDLE_EXCEPTION &&
408 active_opline->lineno == 0 && EG(opline_before_exception)) {
409 return EG(opline_before_exception)->lineno;
410 }
411 if (EG(opline_ptr)) {
412 return active_opline->lineno;
413 } else {
414 return 0;
415 }
416 }
417 /* }}} */
418
zend_is_executing(TSRMLS_D)419 ZEND_API zend_bool zend_is_executing(TSRMLS_D) /* {{{ */
420 {
421 return EG(in_execution);
422 }
423 /* }}} */
424
_zval_ptr_dtor(zval ** zval_ptr ZEND_FILE_LINE_DC)425 ZEND_API void _zval_ptr_dtor(zval **zval_ptr ZEND_FILE_LINE_DC) /* {{{ */
426 {
427 #if DEBUG_ZEND>=2
428 printf("Reducing refcount for %x (%x): %d->%d\n", *zval_ptr, zval_ptr, Z_REFCOUNT_PP(zval_ptr), Z_REFCOUNT_PP(zval_ptr) - 1);
429 #endif
430 Z_DELREF_PP(zval_ptr);
431 if (Z_REFCOUNT_PP(zval_ptr) == 0) {
432 TSRMLS_FETCH();
433
434 if (*zval_ptr != &EG(uninitialized_zval)) {
435 GC_REMOVE_ZVAL_FROM_BUFFER(*zval_ptr);
436 zval_dtor(*zval_ptr);
437 efree_rel(*zval_ptr);
438 }
439 } else {
440 TSRMLS_FETCH();
441
442 if (Z_REFCOUNT_PP(zval_ptr) == 1) {
443 Z_UNSET_ISREF_PP(zval_ptr);
444 }
445
446 GC_ZVAL_CHECK_POSSIBLE_ROOT(*zval_ptr);
447 }
448 }
449 /* }}} */
450
_zval_internal_ptr_dtor(zval ** zval_ptr ZEND_FILE_LINE_DC)451 ZEND_API void _zval_internal_ptr_dtor(zval **zval_ptr ZEND_FILE_LINE_DC) /* {{{ */
452 {
453 #if DEBUG_ZEND>=2
454 printf("Reducing refcount for %x (%x): %d->%d\n", *zval_ptr, zval_ptr, Z_REFCOUNT_PP(zval_ptr), Z_REFCOUNT_PP(zval_ptr) - 1);
455 #endif
456 Z_DELREF_PP(zval_ptr);
457 if (Z_REFCOUNT_PP(zval_ptr) == 0) {
458 zval_internal_dtor(*zval_ptr);
459 free(*zval_ptr);
460 } else if (Z_REFCOUNT_PP(zval_ptr) == 1) {
461 Z_UNSET_ISREF_PP(zval_ptr);
462 }
463 }
464 /* }}} */
465
zend_is_true(zval * op)466 ZEND_API int zend_is_true(zval *op) /* {{{ */
467 {
468 return i_zend_is_true(op);
469 }
470 /* }}} */
471
472 #include "../TSRM/tsrm_strtok_r.h"
473
474 #define IS_VISITED_CONSTANT IS_CONSTANT_INDEX
475 #define IS_CONSTANT_VISITED(p) (Z_TYPE_P(p) & IS_VISITED_CONSTANT)
476 #define Z_REAL_TYPE_P(p) (Z_TYPE_P(p) & ~IS_VISITED_CONSTANT)
477 #define MARK_CONSTANT_VISITED(p) Z_TYPE_P(p) |= IS_VISITED_CONSTANT
478
zval_deep_copy(zval ** p)479 static void zval_deep_copy(zval **p)
480 {
481 zval *value;
482
483 ALLOC_ZVAL(value);
484 *value = **p;
485 Z_TYPE_P(value) &= ~IS_CONSTANT_INDEX;
486 zval_copy_ctor(value);
487 Z_TYPE_P(value) = Z_TYPE_PP(p);
488 INIT_PZVAL(value);
489 *p = value;
490 }
491
zval_update_constant_ex(zval ** pp,void * arg,zend_class_entry * scope TSRMLS_DC)492 ZEND_API int zval_update_constant_ex(zval **pp, void *arg, zend_class_entry *scope TSRMLS_DC) /* {{{ */
493 {
494 zval *p = *pp;
495 zend_bool inline_change = (zend_bool) (zend_uintptr_t) arg;
496 zval const_value;
497 char *colon;
498
499 if (IS_CONSTANT_VISITED(p)) {
500 zend_error(E_ERROR, "Cannot declare self-referencing constant '%s'", Z_STRVAL_P(p));
501 } else if ((Z_TYPE_P(p) & IS_CONSTANT_TYPE_MASK) == IS_CONSTANT) {
502 int refcount;
503 zend_uchar is_ref;
504
505 SEPARATE_ZVAL_IF_NOT_REF(pp);
506 p = *pp;
507
508 MARK_CONSTANT_VISITED(p);
509
510 refcount = Z_REFCOUNT_P(p);
511 is_ref = Z_ISREF_P(p);
512
513 if (!zend_get_constant_ex(p->value.str.val, p->value.str.len, &const_value, scope, Z_REAL_TYPE_P(p) TSRMLS_CC)) {
514 char *actual = Z_STRVAL_P(p);
515
516 if ((colon = (char*)zend_memrchr(Z_STRVAL_P(p), ':', Z_STRLEN_P(p)))) {
517 zend_error(E_ERROR, "Undefined class constant '%s'", Z_STRVAL_P(p));
518 Z_STRLEN_P(p) -= ((colon - Z_STRVAL_P(p)) + 1);
519 if (inline_change) {
520 colon = estrndup(colon, Z_STRLEN_P(p));
521 str_efree(Z_STRVAL_P(p));
522 Z_STRVAL_P(p) = colon;
523 } else {
524 Z_STRVAL_P(p) = colon + 1;
525 }
526 } else {
527 char *save = actual, *slash;
528 int actual_len = Z_STRLEN_P(p);
529 if ((Z_TYPE_P(p) & IS_CONSTANT_UNQUALIFIED) && (slash = (char *)zend_memrchr(actual, '\\', actual_len))) {
530 actual = slash + 1;
531 actual_len -= (actual - Z_STRVAL_P(p));
532 if (inline_change) {
533 actual = estrndup(actual, actual_len);
534 Z_STRVAL_P(p) = actual;
535 Z_STRLEN_P(p) = actual_len;
536 }
537 }
538 if (actual[0] == '\\') {
539 if (inline_change) {
540 memmove(Z_STRVAL_P(p), Z_STRVAL_P(p)+1, Z_STRLEN_P(p));
541 --Z_STRLEN_P(p);
542 } else {
543 ++actual;
544 }
545 --actual_len;
546 }
547 if ((Z_TYPE_P(p) & IS_CONSTANT_UNQUALIFIED) == 0) {
548 int fix_save = 0;
549 if (save[0] == '\\') {
550 save++;
551 fix_save = 1;
552 }
553 zend_error(E_ERROR, "Undefined constant '%s'", save);
554 if (fix_save) {
555 save--;
556 }
557 if (inline_change && !IS_INTERNED(save)) {
558 efree(save);
559 }
560 save = NULL;
561 }
562 if (inline_change && save && save != actual && !IS_INTERNED(save)) {
563 efree(save);
564 }
565 zend_error(E_NOTICE, "Use of undefined constant %s - assumed '%s'", actual, actual);
566 p->type = IS_STRING;
567 if (!inline_change) {
568 Z_STRVAL_P(p) = actual;
569 Z_STRLEN_P(p) = actual_len;
570 zval_copy_ctor(p);
571 }
572 }
573 } else {
574 if (inline_change) {
575 STR_FREE(Z_STRVAL_P(p));
576 }
577 *p = const_value;
578 }
579
580 Z_SET_REFCOUNT_P(p, refcount);
581 Z_SET_ISREF_TO_P(p, is_ref);
582 } else if (Z_TYPE_P(p) == IS_CONSTANT_ARRAY) {
583 zval **element, *new_val;
584 char *str_index;
585 uint str_index_len;
586 ulong num_index;
587 int ret;
588
589 SEPARATE_ZVAL_IF_NOT_REF(pp);
590 p = *pp;
591 Z_TYPE_P(p) = IS_ARRAY;
592
593 if (!inline_change) {
594 zval *tmp;
595 HashTable *tmp_ht = NULL;
596
597 ALLOC_HASHTABLE(tmp_ht);
598 zend_hash_init(tmp_ht, zend_hash_num_elements(Z_ARRVAL_P(p)), NULL, ZVAL_PTR_DTOR, 0);
599 zend_hash_copy(tmp_ht, Z_ARRVAL_P(p), (copy_ctor_func_t) zval_deep_copy, (void *) &tmp, sizeof(zval *));
600 Z_ARRVAL_P(p) = tmp_ht;
601 }
602
603 /* First go over the array and see if there are any constant indices */
604 zend_hash_internal_pointer_reset(Z_ARRVAL_P(p));
605 while (zend_hash_get_current_data(Z_ARRVAL_P(p), (void **) &element) == SUCCESS) {
606 if (!(Z_TYPE_PP(element) & IS_CONSTANT_INDEX)) {
607 zend_hash_move_forward(Z_ARRVAL_P(p));
608 continue;
609 }
610 Z_TYPE_PP(element) &= ~IS_CONSTANT_INDEX;
611 if (zend_hash_get_current_key_ex(Z_ARRVAL_P(p), &str_index, &str_index_len, &num_index, 0, NULL) != HASH_KEY_IS_STRING) {
612 zend_hash_move_forward(Z_ARRVAL_P(p));
613 continue;
614 }
615 if (!zend_get_constant_ex(str_index, str_index_len - 3, &const_value, scope, str_index[str_index_len - 2] TSRMLS_CC)) {
616 char *actual;
617 const char *save = str_index;
618 if ((colon = (char*)zend_memrchr(str_index, ':', str_index_len - 3))) {
619 zend_error(E_ERROR, "Undefined class constant '%s'", str_index);
620 str_index_len -= ((colon - str_index) + 1);
621 str_index = colon;
622 } else {
623 if (str_index[str_index_len - 2] & IS_CONSTANT_UNQUALIFIED) {
624 if ((actual = (char *)zend_memrchr(str_index, '\\', str_index_len - 3))) {
625 actual++;
626 str_index_len -= (actual - str_index);
627 str_index = actual;
628 }
629 }
630 if (str_index[0] == '\\') {
631 ++str_index;
632 --str_index_len;
633 }
634 if (save[0] == '\\') {
635 ++save;
636 }
637 if ((str_index[str_index_len - 2] & IS_CONSTANT_UNQUALIFIED) == 0) {
638 zend_error(E_ERROR, "Undefined constant '%s'", save);
639 }
640 zend_error(E_NOTICE, "Use of undefined constant %s - assumed '%s'", str_index, str_index);
641 }
642 ZVAL_STRINGL(&const_value, str_index, str_index_len-3, 1);
643 }
644
645 if (Z_REFCOUNT_PP(element) > 1) {
646 ALLOC_ZVAL(new_val);
647 *new_val = **element;
648 zval_copy_ctor(new_val);
649 Z_SET_REFCOUNT_P(new_val, 1);
650 Z_UNSET_ISREF_P(new_val);
651
652 /* preserve this bit for inheritance */
653 Z_TYPE_PP(element) |= IS_CONSTANT_INDEX;
654 zval_ptr_dtor(element);
655 *element = new_val;
656 }
657
658 switch (Z_TYPE(const_value)) {
659 case IS_STRING:
660 ret = zend_symtable_update_current_key(Z_ARRVAL_P(p), Z_STRVAL(const_value), Z_STRLEN(const_value) + 1, HASH_UPDATE_KEY_IF_BEFORE);
661 break;
662 case IS_BOOL:
663 case IS_LONG:
664 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);
665 break;
666 case IS_DOUBLE:
667 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);
668 break;
669 case IS_NULL:
670 ret = zend_hash_update_current_key_ex(Z_ARRVAL_P(p), HASH_KEY_IS_STRING, "", 1, 0, HASH_UPDATE_KEY_IF_BEFORE, NULL);
671 break;
672 default:
673 ret = SUCCESS;
674 break;
675 }
676 if (ret == SUCCESS) {
677 zend_hash_move_forward(Z_ARRVAL_P(p));
678 }
679 zval_dtor(&const_value);
680 }
681 zend_hash_apply_with_argument(Z_ARRVAL_P(p), (apply_func_arg_t) zval_update_constant_inline_change, (void *) scope TSRMLS_CC);
682 zend_hash_internal_pointer_reset(Z_ARRVAL_P(p));
683 }
684 return 0;
685 }
686 /* }}} */
687
zval_update_constant_inline_change(zval ** pp,void * scope TSRMLS_DC)688 ZEND_API int zval_update_constant_inline_change(zval **pp, void *scope TSRMLS_DC) /* {{{ */
689 {
690 return zval_update_constant_ex(pp, (void*)1, scope TSRMLS_CC);
691 }
692 /* }}} */
693
zval_update_constant_no_inline_change(zval ** pp,void * scope TSRMLS_DC)694 ZEND_API int zval_update_constant_no_inline_change(zval **pp, void *scope TSRMLS_DC) /* {{{ */
695 {
696 return zval_update_constant_ex(pp, (void*)0, scope TSRMLS_CC);
697 }
698 /* }}} */
699
zval_update_constant(zval ** pp,void * arg TSRMLS_DC)700 ZEND_API int zval_update_constant(zval **pp, void *arg TSRMLS_DC) /* {{{ */
701 {
702 return zval_update_constant_ex(pp, arg, NULL TSRMLS_CC);
703 }
704 /* }}} */
705
call_user_function(HashTable * function_table,zval ** object_pp,zval * function_name,zval * retval_ptr,zend_uint param_count,zval * params[]TSRMLS_DC)706 int call_user_function(HashTable *function_table, zval **object_pp, zval *function_name, zval *retval_ptr, zend_uint param_count, zval *params[] TSRMLS_DC) /* {{{ */
707 {
708 zval ***params_array;
709 zend_uint i;
710 int ex_retval;
711 zval *local_retval_ptr = NULL;
712
713 if (param_count) {
714 params_array = (zval ***) emalloc(sizeof(zval **)*param_count);
715 for (i=0; i<param_count; i++) {
716 params_array[i] = ¶ms[i];
717 }
718 } else {
719 params_array = NULL;
720 }
721 ex_retval = call_user_function_ex(function_table, object_pp, function_name, &local_retval_ptr, param_count, params_array, 1, NULL TSRMLS_CC);
722 if (local_retval_ptr) {
723 COPY_PZVAL_TO_ZVAL(*retval_ptr, local_retval_ptr);
724 } else {
725 INIT_ZVAL(*retval_ptr);
726 }
727 if (params_array) {
728 efree(params_array);
729 }
730 return ex_retval;
731 }
732 /* }}} */
733
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)734 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) /* {{{ */
735 {
736 zend_fcall_info fci;
737
738 fci.size = sizeof(fci);
739 fci.function_table = function_table;
740 fci.object_ptr = object_pp ? *object_pp : NULL;
741 fci.function_name = function_name;
742 fci.retval_ptr_ptr = retval_ptr_ptr;
743 fci.param_count = param_count;
744 fci.params = params;
745 fci.no_separation = (zend_bool) no_separation;
746 fci.symbol_table = symbol_table;
747
748 return zend_call_function(&fci, NULL TSRMLS_CC);
749 }
750 /* }}} */
751
zend_call_function(zend_fcall_info * fci,zend_fcall_info_cache * fci_cache TSRMLS_DC)752 int zend_call_function(zend_fcall_info *fci, zend_fcall_info_cache *fci_cache TSRMLS_DC) /* {{{ */
753 {
754 zend_uint i;
755 zval **original_return_value;
756 HashTable *calling_symbol_table;
757 zend_op_array *original_op_array;
758 zend_op **original_opline_ptr;
759 zend_class_entry *current_scope;
760 zend_class_entry *current_called_scope;
761 zend_class_entry *calling_scope = NULL;
762 zend_class_entry *called_scope = NULL;
763 zval *current_this;
764 zend_execute_data execute_data;
765 zend_fcall_info_cache fci_cache_local;
766
767 *fci->retval_ptr_ptr = NULL;
768
769 if (!EG(active)) {
770 return FAILURE; /* executor is already inactive */
771 }
772
773 if (EG(exception)) {
774 return FAILURE; /* we would result in an instable executor otherwise */
775 }
776
777 switch (fci->size) {
778 case sizeof(zend_fcall_info):
779 break; /* nothing to do currently */
780 default:
781 zend_error(E_ERROR, "Corrupted fcall_info provided to zend_call_function()");
782 break;
783 }
784
785 /* Initialize execute_data */
786 if (EG(current_execute_data)) {
787 execute_data = *EG(current_execute_data);
788 EX(op_array) = NULL;
789 EX(opline) = NULL;
790 EX(object) = NULL;
791 } else {
792 /* This only happens when we're called outside any execute()'s
793 * It shouldn't be strictly necessary to NULL execute_data out,
794 * but it may make bugs easier to spot
795 */
796 memset(&execute_data, 0, sizeof(zend_execute_data));
797 }
798
799 if (!fci_cache || !fci_cache->initialized) {
800 char *callable_name;
801 char *error = NULL;
802
803 if (!fci_cache) {
804 fci_cache = &fci_cache_local;
805 }
806
807 if (!zend_is_callable_ex(fci->function_name, fci->object_ptr, IS_CALLABLE_CHECK_SILENT, &callable_name, NULL, fci_cache, &error TSRMLS_CC)) {
808 if (error) {
809 zend_error(E_WARNING, "Invalid callback %s, %s", callable_name, error);
810 efree(error);
811 }
812 if (callable_name) {
813 efree(callable_name);
814 }
815 return FAILURE;
816 } else if (error) {
817 /* Capitalize the first latter of the error message */
818 if (error[0] >= 'a' && error[0] <= 'z') {
819 error[0] += ('A' - 'a');
820 }
821 zend_error(E_STRICT, "%s", error);
822 efree(error);
823 }
824 efree(callable_name);
825 }
826
827 EX(function_state).function = fci_cache->function_handler;
828 calling_scope = fci_cache->calling_scope;
829 called_scope = fci_cache->called_scope;
830 fci->object_ptr = fci_cache->object_ptr;
831 EX(object) = fci->object_ptr;
832 if (fci->object_ptr && Z_TYPE_P(fci->object_ptr) == IS_OBJECT &&
833 (!EG(objects_store).object_buckets || !EG(objects_store).object_buckets[Z_OBJ_HANDLE_P(fci->object_ptr)].valid)) {
834 return FAILURE;
835 }
836
837 if (EX(function_state).function->common.fn_flags & (ZEND_ACC_ABSTRACT|ZEND_ACC_DEPRECATED)) {
838 if (EX(function_state).function->common.fn_flags & ZEND_ACC_ABSTRACT) {
839 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);
840 }
841 if (EX(function_state).function->common.fn_flags & ZEND_ACC_DEPRECATED) {
842 zend_error(E_DEPRECATED, "Function %s%s%s() is deprecated",
843 EX(function_state).function->common.scope ? EX(function_state).function->common.scope->name : "",
844 EX(function_state).function->common.scope ? "::" : "",
845 EX(function_state).function->common.function_name);
846 }
847 }
848
849 ZEND_VM_STACK_GROW_IF_NEEDED(fci->param_count + 1);
850
851 for (i=0; i<fci->param_count; i++) {
852 zval *param;
853
854 if (ARG_SHOULD_BE_SENT_BY_REF(EX(function_state).function, i + 1)) {
855 if (!PZVAL_IS_REF(*fci->params[i]) && Z_REFCOUNT_PP(fci->params[i]) > 1) {
856 zval *new_zval;
857
858 if (fci->no_separation &&
859 !ARG_MAY_BE_SENT_BY_REF(EX(function_state).function, i + 1)) {
860 if (i || UNEXPECTED(ZEND_VM_STACK_ELEMETS(EG(argument_stack)) == (EG(argument_stack)->top))) {
861 /* hack to clean up the stack */
862 zend_vm_stack_push_nocheck((void *) (zend_uintptr_t)i TSRMLS_CC);
863 zend_vm_stack_clear_multiple(TSRMLS_C);
864 }
865
866 zend_error(E_WARNING, "Parameter %d to %s%s%s() expected to be a reference, value given",
867 i+1,
868 EX(function_state).function->common.scope ? EX(function_state).function->common.scope->name : "",
869 EX(function_state).function->common.scope ? "::" : "",
870 EX(function_state).function->common.function_name);
871 return FAILURE;
872 }
873
874 ALLOC_ZVAL(new_zval);
875 *new_zval = **fci->params[i];
876 zval_copy_ctor(new_zval);
877 Z_SET_REFCOUNT_P(new_zval, 1);
878 Z_DELREF_PP(fci->params[i]);
879 *fci->params[i] = new_zval;
880 }
881 Z_ADDREF_PP(fci->params[i]);
882 Z_SET_ISREF_PP(fci->params[i]);
883 param = *fci->params[i];
884 } else if (PZVAL_IS_REF(*fci->params[i]) &&
885 /* don't separate references for __call */
886 (EX(function_state).function->common.fn_flags & ZEND_ACC_CALL_VIA_HANDLER) == 0 ) {
887 ALLOC_ZVAL(param);
888 *param = **(fci->params[i]);
889 INIT_PZVAL(param);
890 zval_copy_ctor(param);
891 } else if (*fci->params[i] != &EG(uninitialized_zval)) {
892 Z_ADDREF_PP(fci->params[i]);
893 param = *fci->params[i];
894 } else {
895 ALLOC_ZVAL(param);
896 *param = **(fci->params[i]);
897 INIT_PZVAL(param);
898 }
899 zend_vm_stack_push_nocheck(param TSRMLS_CC);
900 }
901
902 EX(function_state).arguments = zend_vm_stack_top(TSRMLS_C);
903 zend_vm_stack_push_nocheck((void*)(zend_uintptr_t)fci->param_count TSRMLS_CC);
904
905 current_scope = EG(scope);
906 EG(scope) = calling_scope;
907
908 current_this = EG(This);
909
910 current_called_scope = EG(called_scope);
911 if (called_scope) {
912 EG(called_scope) = called_scope;
913 } else if (EX(function_state).function->type != ZEND_INTERNAL_FUNCTION) {
914 EG(called_scope) = NULL;
915 }
916
917 if (fci->object_ptr) {
918 if ((EX(function_state).function->common.fn_flags & ZEND_ACC_STATIC)) {
919 EG(This) = NULL;
920 } else {
921 EG(This) = fci->object_ptr;
922
923 if (!PZVAL_IS_REF(EG(This))) {
924 Z_ADDREF_P(EG(This)); /* For $this pointer */
925 } else {
926 zval *this_ptr;
927
928 ALLOC_ZVAL(this_ptr);
929 *this_ptr = *EG(This);
930 INIT_PZVAL(this_ptr);
931 zval_copy_ctor(this_ptr);
932 EG(This) = this_ptr;
933 }
934 }
935 } else {
936 EG(This) = NULL;
937 }
938
939 EX(prev_execute_data) = EG(current_execute_data);
940 EG(current_execute_data) = &execute_data;
941
942 if (EX(function_state).function->type == ZEND_USER_FUNCTION) {
943 calling_symbol_table = EG(active_symbol_table);
944 EG(scope) = EX(function_state).function->common.scope;
945 if (fci->symbol_table) {
946 EG(active_symbol_table) = fci->symbol_table;
947 } else {
948 EG(active_symbol_table) = NULL;
949 }
950
951 original_return_value = EG(return_value_ptr_ptr);
952 original_op_array = EG(active_op_array);
953 EG(return_value_ptr_ptr) = fci->retval_ptr_ptr;
954 EG(active_op_array) = (zend_op_array *) EX(function_state).function;
955 original_opline_ptr = EG(opline_ptr);
956 zend_execute(EG(active_op_array) TSRMLS_CC);
957 if (!fci->symbol_table && EG(active_symbol_table)) {
958 if (EG(symtable_cache_ptr)>=EG(symtable_cache_limit)) {
959 zend_hash_destroy(EG(active_symbol_table));
960 FREE_HASHTABLE(EG(active_symbol_table));
961 } else {
962 /* clean before putting into the cache, since clean
963 could call dtors, which could use cached hash */
964 zend_hash_clean(EG(active_symbol_table));
965 *(++EG(symtable_cache_ptr)) = EG(active_symbol_table);
966 }
967 }
968 EG(active_symbol_table) = calling_symbol_table;
969 EG(active_op_array) = original_op_array;
970 EG(return_value_ptr_ptr)=original_return_value;
971 EG(opline_ptr) = original_opline_ptr;
972 } else if (EX(function_state).function->type == ZEND_INTERNAL_FUNCTION) {
973 int call_via_handler = (EX(function_state).function->common.fn_flags & ZEND_ACC_CALL_VIA_HANDLER) != 0;
974 ALLOC_INIT_ZVAL(*fci->retval_ptr_ptr);
975 if (EX(function_state).function->common.scope) {
976 EG(scope) = EX(function_state).function->common.scope;
977 }
978 ((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);
979 /* We shouldn't fix bad extensions here,
980 because it can break proper ones (Bug #34045)
981 if (!EX(function_state).function->common.return_reference)
982 {
983 INIT_PZVAL(*fci->retval_ptr_ptr);
984 }*/
985 if (EG(exception) && fci->retval_ptr_ptr) {
986 zval_ptr_dtor(fci->retval_ptr_ptr);
987 *fci->retval_ptr_ptr = NULL;
988 }
989
990 if (call_via_handler) {
991 /* We must re-initialize function again */
992 fci_cache->initialized = 0;
993 }
994 } else { /* ZEND_OVERLOADED_FUNCTION */
995 ALLOC_INIT_ZVAL(*fci->retval_ptr_ptr);
996
997 /* Not sure what should be done here if it's a static method */
998 if (fci->object_ptr) {
999 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);
1000 } else {
1001 zend_error_noreturn(E_ERROR, "Cannot call overloaded function for non-object");
1002 }
1003
1004 if (EX(function_state).function->type == ZEND_OVERLOADED_FUNCTION_TEMPORARY) {
1005 efree((char*)EX(function_state).function->common.function_name);
1006 }
1007 efree(EX(function_state).function);
1008
1009 if (EG(exception) && fci->retval_ptr_ptr) {
1010 zval_ptr_dtor(fci->retval_ptr_ptr);
1011 *fci->retval_ptr_ptr = NULL;
1012 }
1013 }
1014 zend_vm_stack_clear_multiple(TSRMLS_C);
1015
1016 if (EG(This)) {
1017 zval_ptr_dtor(&EG(This));
1018 }
1019 EG(called_scope) = current_called_scope;
1020 EG(scope) = current_scope;
1021 EG(This) = current_this;
1022 EG(current_execute_data) = EX(prev_execute_data);
1023
1024 if (EG(exception)) {
1025 zend_throw_exception_internal(NULL TSRMLS_CC);
1026 }
1027 return SUCCESS;
1028 }
1029 /* }}} */
1030
zend_lookup_class_ex(const char * name,int name_length,const zend_literal * key,int use_autoload,zend_class_entry *** ce TSRMLS_DC)1031 ZEND_API int zend_lookup_class_ex(const char *name, int name_length, const zend_literal *key, int use_autoload, zend_class_entry ***ce TSRMLS_DC) /* {{{ */
1032 {
1033 zval **args[1];
1034 zval autoload_function;
1035 zval *class_name_ptr;
1036 zval *retval_ptr = NULL;
1037 int retval, lc_length;
1038 char *lc_name;
1039 char *lc_free;
1040 zend_fcall_info fcall_info;
1041 zend_fcall_info_cache fcall_cache;
1042 char dummy = 1;
1043 ulong hash;
1044 ALLOCA_FLAG(use_heap)
1045
1046 if (key) {
1047 lc_name = Z_STRVAL(key->constant);
1048 lc_length = Z_STRLEN(key->constant) + 1;
1049 hash = key->hash_value;
1050 } else {
1051 if (name == NULL || !name_length) {
1052 return FAILURE;
1053 }
1054
1055 lc_free = lc_name = do_alloca(name_length + 1, use_heap);
1056 zend_str_tolower_copy(lc_name, name, name_length);
1057 lc_length = name_length + 1;
1058
1059 if (lc_name[0] == '\\') {
1060 lc_name += 1;
1061 lc_length -= 1;
1062 }
1063
1064 hash = zend_inline_hash_func(lc_name, lc_length);
1065 }
1066
1067 if (zend_hash_quick_find(EG(class_table), lc_name, lc_length, hash, (void **) ce) == SUCCESS) {
1068 if (!key) {
1069 free_alloca(lc_free, use_heap);
1070 }
1071 return SUCCESS;
1072 }
1073
1074 /* The compiler is not-reentrant. Make sure we __autoload() only during run-time
1075 * (doesn't impact functionality of __autoload()
1076 */
1077 if (!use_autoload || zend_is_compiling(TSRMLS_C)) {
1078 if (!key) {
1079 free_alloca(lc_free, use_heap);
1080 }
1081 return FAILURE;
1082 }
1083
1084 /* Verify class name before passing it to __autoload() */
1085 if (strspn(name, "0123456789_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ\177\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\\") != name_length) {
1086 if (!key) {
1087 free_alloca(lc_free, use_heap);
1088 }
1089 return FAILURE;
1090 }
1091
1092 if (EG(in_autoload) == NULL) {
1093 ALLOC_HASHTABLE(EG(in_autoload));
1094 zend_hash_init(EG(in_autoload), 0, NULL, NULL, 0);
1095 }
1096
1097 if (zend_hash_quick_add(EG(in_autoload), lc_name, lc_length, hash, (void**)&dummy, sizeof(char), NULL) == FAILURE) {
1098 if (!key) {
1099 free_alloca(lc_free, use_heap);
1100 }
1101 return FAILURE;
1102 }
1103
1104 ZVAL_STRINGL(&autoload_function, ZEND_AUTOLOAD_FUNC_NAME, sizeof(ZEND_AUTOLOAD_FUNC_NAME) - 1, 0);
1105
1106 ALLOC_ZVAL(class_name_ptr);
1107 INIT_PZVAL(class_name_ptr);
1108 if (name[0] == '\\') {
1109 ZVAL_STRINGL(class_name_ptr, name+1, name_length-1, 1);
1110 } else {
1111 ZVAL_STRINGL(class_name_ptr, name, name_length, 1);
1112 }
1113
1114 args[0] = &class_name_ptr;
1115
1116 fcall_info.size = sizeof(fcall_info);
1117 fcall_info.function_table = EG(function_table);
1118 fcall_info.function_name = &autoload_function;
1119 fcall_info.symbol_table = NULL;
1120 fcall_info.retval_ptr_ptr = &retval_ptr;
1121 fcall_info.param_count = 1;
1122 fcall_info.params = args;
1123 fcall_info.object_ptr = NULL;
1124 fcall_info.no_separation = 1;
1125
1126 fcall_cache.initialized = EG(autoload_func) ? 1 : 0;
1127 fcall_cache.function_handler = EG(autoload_func);
1128 fcall_cache.calling_scope = NULL;
1129 fcall_cache.called_scope = NULL;
1130 fcall_cache.object_ptr = NULL;
1131
1132 zend_exception_save(TSRMLS_C);
1133 retval = zend_call_function(&fcall_info, &fcall_cache TSRMLS_CC);
1134 zend_exception_restore(TSRMLS_C);
1135
1136 EG(autoload_func) = fcall_cache.function_handler;
1137
1138 zval_ptr_dtor(&class_name_ptr);
1139
1140 zend_hash_quick_del(EG(in_autoload), lc_name, lc_length, hash);
1141
1142 if (retval_ptr) {
1143 zval_ptr_dtor(&retval_ptr);
1144 }
1145
1146 if (retval == SUCCESS) {
1147 retval = zend_hash_quick_find(EG(class_table), lc_name, lc_length, hash, (void **) ce);
1148 }
1149 if (!key) {
1150 free_alloca(lc_free, use_heap);
1151 }
1152 return retval;
1153 }
1154 /* }}} */
1155
zend_lookup_class(const char * name,int name_length,zend_class_entry *** ce TSRMLS_DC)1156 ZEND_API int zend_lookup_class(const char *name, int name_length, zend_class_entry ***ce TSRMLS_DC) /* {{{ */
1157 {
1158 return zend_lookup_class_ex(name, name_length, NULL, 1, ce TSRMLS_CC);
1159 }
1160 /* }}} */
1161
zend_eval_stringl(char * str,int str_len,zval * retval_ptr,char * string_name TSRMLS_DC)1162 ZEND_API int zend_eval_stringl(char *str, int str_len, zval *retval_ptr, char *string_name TSRMLS_DC) /* {{{ */
1163 {
1164 zval pv;
1165 zend_op_array *new_op_array;
1166 zend_op_array *original_active_op_array = EG(active_op_array);
1167 zend_uint original_compiler_options;
1168 int retval;
1169
1170 if (retval_ptr) {
1171 Z_STRLEN(pv) = str_len + sizeof("return ;") - 1;
1172 Z_STRVAL(pv) = emalloc(Z_STRLEN(pv) + 1);
1173 memcpy(Z_STRVAL(pv), "return ", sizeof("return ") - 1);
1174 memcpy(Z_STRVAL(pv) + sizeof("return ") - 1, str, str_len);
1175 Z_STRVAL(pv)[Z_STRLEN(pv) - 1] = ';';
1176 Z_STRVAL(pv)[Z_STRLEN(pv)] = '\0';
1177 } else {
1178 Z_STRLEN(pv) = str_len;
1179 Z_STRVAL(pv) = str;
1180 }
1181 Z_TYPE(pv) = IS_STRING;
1182
1183 /*printf("Evaluating '%s'\n", pv.value.str.val);*/
1184
1185 original_compiler_options = CG(compiler_options);
1186 CG(compiler_options) = ZEND_COMPILE_DEFAULT_FOR_EVAL;
1187 new_op_array = zend_compile_string(&pv, string_name TSRMLS_CC);
1188 CG(compiler_options) = original_compiler_options;
1189
1190 if (new_op_array) {
1191 zval *local_retval_ptr=NULL;
1192 zval **original_return_value_ptr_ptr = EG(return_value_ptr_ptr);
1193 zend_op **original_opline_ptr = EG(opline_ptr);
1194 int orig_interactive = CG(interactive);
1195
1196 EG(return_value_ptr_ptr) = &local_retval_ptr;
1197 EG(active_op_array) = new_op_array;
1198 EG(no_extensions)=1;
1199 if (!EG(active_symbol_table)) {
1200 zend_rebuild_symbol_table(TSRMLS_C);
1201 }
1202 CG(interactive) = 0;
1203
1204 zend_try {
1205 zend_execute(new_op_array TSRMLS_CC);
1206 } zend_catch {
1207 destroy_op_array(new_op_array TSRMLS_CC);
1208 efree(new_op_array);
1209 zend_bailout();
1210 } zend_end_try();
1211
1212 CG(interactive) = orig_interactive;
1213 if (local_retval_ptr) {
1214 if (retval_ptr) {
1215 COPY_PZVAL_TO_ZVAL(*retval_ptr, local_retval_ptr);
1216 } else {
1217 zval_ptr_dtor(&local_retval_ptr);
1218 }
1219 } else {
1220 if (retval_ptr) {
1221 INIT_ZVAL(*retval_ptr);
1222 }
1223 }
1224
1225 EG(no_extensions)=0;
1226 EG(opline_ptr) = original_opline_ptr;
1227 EG(active_op_array) = original_active_op_array;
1228 destroy_op_array(new_op_array TSRMLS_CC);
1229 efree(new_op_array);
1230 EG(return_value_ptr_ptr) = original_return_value_ptr_ptr;
1231 retval = SUCCESS;
1232 } else {
1233 retval = FAILURE;
1234 }
1235 if (retval_ptr) {
1236 zval_dtor(&pv);
1237 }
1238 return retval;
1239 }
1240 /* }}} */
1241
zend_eval_string(char * str,zval * retval_ptr,char * string_name TSRMLS_DC)1242 ZEND_API int zend_eval_string(char *str, zval *retval_ptr, char *string_name TSRMLS_DC) /* {{{ */
1243 {
1244 return zend_eval_stringl(str, strlen(str), retval_ptr, string_name TSRMLS_CC);
1245 }
1246 /* }}} */
1247
zend_eval_stringl_ex(char * str,int str_len,zval * retval_ptr,char * string_name,int handle_exceptions TSRMLS_DC)1248 ZEND_API int zend_eval_stringl_ex(char *str, int str_len, zval *retval_ptr, char *string_name, int handle_exceptions TSRMLS_DC) /* {{{ */
1249 {
1250 int result;
1251
1252 result = zend_eval_stringl(str, str_len, retval_ptr, string_name TSRMLS_CC);
1253 if (handle_exceptions && EG(exception)) {
1254 zend_exception_error(EG(exception), E_ERROR TSRMLS_CC);
1255 result = FAILURE;
1256 }
1257 return result;
1258 }
1259 /* }}} */
1260
zend_eval_string_ex(char * str,zval * retval_ptr,char * string_name,int handle_exceptions TSRMLS_DC)1261 ZEND_API int zend_eval_string_ex(char *str, zval *retval_ptr, char *string_name, int handle_exceptions TSRMLS_DC) /* {{{ */
1262 {
1263 return zend_eval_stringl_ex(str, strlen(str), retval_ptr, string_name, handle_exceptions TSRMLS_CC);
1264 }
1265 /* }}} */
1266
execute_new_code(TSRMLS_D)1267 void execute_new_code(TSRMLS_D) /* {{{ */
1268 {
1269 zend_op *opline, *end;
1270 zend_op *ret_opline;
1271 int orig_interactive;
1272
1273 if (!(CG(active_op_array)->fn_flags & ZEND_ACC_INTERACTIVE)
1274 || CG(context).backpatch_count>0
1275 || CG(active_op_array)->function_name
1276 || CG(active_op_array)->type!=ZEND_USER_FUNCTION) {
1277 return;
1278 }
1279
1280 ret_opline = get_next_op(CG(active_op_array) TSRMLS_CC);
1281 ret_opline->opcode = ZEND_RETURN;
1282 ret_opline->op1_type = IS_CONST;
1283 ret_opline->op1.constant = zend_add_literal(CG(active_op_array), &EG(uninitialized_zval) TSRMLS_CC);
1284 SET_UNUSED(ret_opline->op2);
1285
1286 if (!EG(start_op)) {
1287 EG(start_op) = CG(active_op_array)->opcodes;
1288 }
1289
1290 opline=EG(start_op);
1291 end=CG(active_op_array)->opcodes+CG(active_op_array)->last;
1292
1293 while (opline<end) {
1294 if (opline->op1_type == IS_CONST) {
1295 opline->op1.zv = &CG(active_op_array)->literals[opline->op1.constant].constant;
1296 }
1297 if (opline->op2_type == IS_CONST) {
1298 opline->op2.zv = &CG(active_op_array)->literals[opline->op2.constant].constant;
1299 }
1300 switch (opline->opcode) {
1301 case ZEND_GOTO:
1302 if (Z_TYPE_P(opline->op2.zv) != IS_LONG) {
1303 zend_resolve_goto_label(CG(active_op_array), opline, 1 TSRMLS_CC);
1304 }
1305 /* break omitted intentionally */
1306 case ZEND_JMP:
1307 opline->op1.jmp_addr = &CG(active_op_array)->opcodes[opline->op1.opline_num];
1308 break;
1309 case ZEND_JMPZ:
1310 case ZEND_JMPNZ:
1311 case ZEND_JMPZ_EX:
1312 case ZEND_JMPNZ_EX:
1313 case ZEND_JMP_SET:
1314 case ZEND_JMP_SET_VAR:
1315 opline->op2.jmp_addr = &CG(active_op_array)->opcodes[opline->op2.opline_num];
1316 break;
1317 }
1318 ZEND_VM_SET_OPCODE_HANDLER(opline);
1319 opline++;
1320 }
1321
1322 zend_release_labels(1 TSRMLS_CC);
1323
1324 EG(return_value_ptr_ptr) = NULL;
1325 EG(active_op_array) = CG(active_op_array);
1326 orig_interactive = CG(interactive);
1327 CG(interactive) = 0;
1328 zend_execute(CG(active_op_array) TSRMLS_CC);
1329 CG(interactive) = orig_interactive;
1330
1331 if (EG(exception)) {
1332 zend_exception_error(EG(exception), E_ERROR TSRMLS_CC);
1333 }
1334
1335 CG(active_op_array)->last -= 1; /* get rid of that ZEND_RETURN */
1336 EG(start_op) = CG(active_op_array)->opcodes+CG(active_op_array)->last;
1337 }
1338 /* }}} */
1339
zend_timeout(int dummy)1340 ZEND_API void zend_timeout(int dummy) /* {{{ */
1341 {
1342 TSRMLS_FETCH();
1343
1344 if (zend_on_timeout) {
1345 #ifdef ZEND_SIGNALS
1346 /*
1347 We got here because we got a timeout signal, so we are in a signal handler
1348 at this point. However, we want to be able to timeout any user-supplied
1349 shutdown functions, so pretend we are not in a signal handler while we are
1350 calling these
1351 */
1352 SIGG(running) = 0;
1353 #endif
1354 zend_on_timeout(EG(timeout_seconds) TSRMLS_CC);
1355 }
1356
1357 zend_error(E_ERROR, "Maximum execution time of %d second%s exceeded", EG(timeout_seconds), EG(timeout_seconds) == 1 ? "" : "s");
1358 }
1359 /* }}} */
1360
1361 #ifdef ZEND_WIN32
zend_timeout_WndProc(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam)1362 static LRESULT CALLBACK zend_timeout_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) /* {{{ */
1363 {
1364 switch (message) {
1365 case WM_DESTROY:
1366 PostQuitMessage(0);
1367 break;
1368 case WM_REGISTER_ZEND_TIMEOUT:
1369 /* wParam is the thread id pointer, lParam is the timeout amount in seconds */
1370 if (lParam == 0) {
1371 KillTimer(timeout_window, wParam);
1372 } else {
1373 #ifdef ZTS
1374 void ***tsrm_ls;
1375 #endif
1376 SetTimer(timeout_window, wParam, lParam*1000, NULL);
1377 #ifdef ZTS
1378 tsrm_ls = ts_resource_ex(0, &wParam);
1379 if (!tsrm_ls) {
1380 /* shouldn't normally happen */
1381 break;
1382 }
1383 #endif
1384 EG(timed_out) = 0;
1385 }
1386 break;
1387 case WM_UNREGISTER_ZEND_TIMEOUT:
1388 /* wParam is the thread id pointer */
1389 KillTimer(timeout_window, wParam);
1390 break;
1391 case WM_TIMER: {
1392 #ifdef ZTS
1393 void ***tsrm_ls;
1394
1395 tsrm_ls = ts_resource_ex(0, &wParam);
1396 if (!tsrm_ls) {
1397 /* Thread died before receiving its timeout? */
1398 break;
1399 }
1400 #endif
1401 KillTimer(timeout_window, wParam);
1402 EG(timed_out) = 1;
1403 }
1404 break;
1405 default:
1406 return DefWindowProc(hWnd, message, wParam, lParam);
1407 }
1408 return 0;
1409 }
1410 /* }}} */
1411
timeout_thread_proc(void * pArgs)1412 static unsigned __stdcall timeout_thread_proc(void *pArgs) /* {{{ */
1413 {
1414 MSG message;
1415
1416 wc.style=0;
1417 wc.lpfnWndProc = zend_timeout_WndProc;
1418 wc.cbClsExtra=0;
1419 wc.cbWndExtra=0;
1420 wc.hInstance=NULL;
1421 wc.hIcon=NULL;
1422 wc.hCursor=NULL;
1423 wc.hbrBackground=(HBRUSH)(COLOR_BACKGROUND + 5);
1424 wc.lpszMenuName=NULL;
1425 wc.lpszClassName = "Zend Timeout Window";
1426 if (!RegisterClass(&wc)) {
1427 return -1;
1428 }
1429 timeout_window = CreateWindow(wc.lpszClassName, wc.lpszClassName, 0, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, NULL, NULL);
1430 SetEvent(timeout_thread_event);
1431 while (GetMessage(&message, NULL, 0, 0)) {
1432 SendMessage(timeout_window, message.message, message.wParam, message.lParam);
1433 if (message.message == WM_QUIT) {
1434 break;
1435 }
1436 }
1437 DestroyWindow(timeout_window);
1438 UnregisterClass(wc.lpszClassName, NULL);
1439 SetEvent(timeout_thread_handle);
1440 return 0;
1441 }
1442 /* }}} */
1443
zend_init_timeout_thread(void)1444 void zend_init_timeout_thread(void) /* {{{ */
1445 {
1446 timeout_thread_event = CreateEvent(NULL, FALSE, FALSE, NULL);
1447 timeout_thread_handle = CreateEvent(NULL, FALSE, FALSE, NULL);
1448 _beginthreadex(NULL, 0, timeout_thread_proc, NULL, 0, &timeout_thread_id);
1449 WaitForSingleObject(timeout_thread_event, INFINITE);
1450 }
1451 /* }}} */
1452
zend_shutdown_timeout_thread(void)1453 void zend_shutdown_timeout_thread(void) /* {{{ */
1454 {
1455 if (!timeout_thread_initialized) {
1456 return;
1457 }
1458 PostThreadMessage(timeout_thread_id, WM_QUIT, 0, 0);
1459
1460 /* Wait for thread termination */
1461 WaitForSingleObject(timeout_thread_handle, 5000);
1462 CloseHandle(timeout_thread_handle);
1463 timeout_thread_initialized = 0;
1464 }
1465 /* }}} */
1466
1467 #endif
1468
1469 /* This one doesn't exists on QNX */
1470 #ifndef SIGPROF
1471 #define SIGPROF 27
1472 #endif
1473
zend_set_timeout(long seconds,int reset_signals)1474 void zend_set_timeout(long seconds, int reset_signals) /* {{{ */
1475 {
1476 TSRMLS_FETCH();
1477
1478 EG(timeout_seconds) = seconds;
1479
1480 #ifdef ZEND_WIN32
1481 if(!seconds) {
1482 return;
1483 }
1484 if (timeout_thread_initialized == 0 && InterlockedIncrement(&timeout_thread_initialized) == 1) {
1485 /* We start up this process-wide thread here and not in zend_startup(), because if Zend
1486 * is initialized inside a DllMain(), you're not supposed to start threads from it.
1487 */
1488 zend_init_timeout_thread();
1489 }
1490 PostThreadMessage(timeout_thread_id, WM_REGISTER_ZEND_TIMEOUT, (WPARAM) GetCurrentThreadId(), (LPARAM) seconds);
1491 #else
1492 # ifdef HAVE_SETITIMER
1493 {
1494 struct itimerval t_r; /* timeout requested */
1495 int signo;
1496
1497 if(seconds) {
1498 t_r.it_value.tv_sec = seconds;
1499 t_r.it_value.tv_usec = t_r.it_interval.tv_sec = t_r.it_interval.tv_usec = 0;
1500
1501 # ifdef __CYGWIN__
1502 setitimer(ITIMER_REAL, &t_r, NULL);
1503 }
1504 signo = SIGALRM;
1505 # else
1506 setitimer(ITIMER_PROF, &t_r, NULL);
1507 }
1508 signo = SIGPROF;
1509 # endif
1510
1511 if (reset_signals) {
1512 # ifdef ZEND_SIGNALS
1513 zend_signal(signo, zend_timeout TSRMLS_CC);
1514 # else
1515 sigset_t sigset;
1516
1517 signal(signo, zend_timeout);
1518 sigemptyset(&sigset);
1519 sigaddset(&sigset, signo);
1520 sigprocmask(SIG_UNBLOCK, &sigset, NULL);
1521 # endif
1522 }
1523 }
1524 # endif /* HAVE_SETITIMER */
1525 #endif
1526 }
1527 /* }}} */
1528
zend_unset_timeout(TSRMLS_D)1529 void zend_unset_timeout(TSRMLS_D) /* {{{ */
1530 {
1531 #ifdef ZEND_WIN32
1532 if(timeout_thread_initialized) {
1533 PostThreadMessage(timeout_thread_id, WM_UNREGISTER_ZEND_TIMEOUT, (WPARAM) GetCurrentThreadId(), (LPARAM) 0);
1534 }
1535 #else
1536 # ifdef HAVE_SETITIMER
1537 if (EG(timeout_seconds)) {
1538 struct itimerval no_timeout;
1539
1540 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;
1541
1542 #ifdef __CYGWIN__
1543 setitimer(ITIMER_REAL, &no_timeout, NULL);
1544 #else
1545 setitimer(ITIMER_PROF, &no_timeout, NULL);
1546 #endif
1547 }
1548 # endif
1549 #endif
1550 }
1551 /* }}} */
1552
zend_fetch_class(const char * class_name,uint class_name_len,int fetch_type TSRMLS_DC)1553 zend_class_entry *zend_fetch_class(const char *class_name, uint class_name_len, int fetch_type TSRMLS_DC) /* {{{ */
1554 {
1555 zend_class_entry **pce;
1556 int use_autoload = (fetch_type & ZEND_FETCH_CLASS_NO_AUTOLOAD) == 0;
1557 int silent = (fetch_type & ZEND_FETCH_CLASS_SILENT) != 0;
1558
1559 fetch_type &= ZEND_FETCH_CLASS_MASK;
1560
1561 check_fetch_type:
1562 switch (fetch_type) {
1563 case ZEND_FETCH_CLASS_SELF:
1564 if (!EG(scope)) {
1565 zend_error(E_ERROR, "Cannot access self:: when no class scope is active");
1566 }
1567 return EG(scope);
1568 case ZEND_FETCH_CLASS_PARENT:
1569 if (!EG(scope)) {
1570 zend_error(E_ERROR, "Cannot access parent:: when no class scope is active");
1571 }
1572 if (!EG(scope)->parent) {
1573 zend_error(E_ERROR, "Cannot access parent:: when current class scope has no parent");
1574 }
1575 return EG(scope)->parent;
1576 case ZEND_FETCH_CLASS_STATIC:
1577 if (!EG(called_scope)) {
1578 zend_error(E_ERROR, "Cannot access static:: when no class scope is active");
1579 }
1580 return EG(called_scope);
1581 case ZEND_FETCH_CLASS_AUTO: {
1582 fetch_type = zend_get_class_fetch_type(class_name, class_name_len);
1583 if (fetch_type!=ZEND_FETCH_CLASS_DEFAULT) {
1584 goto check_fetch_type;
1585 }
1586 }
1587 break;
1588 }
1589
1590 if (zend_lookup_class_ex(class_name, class_name_len, NULL, use_autoload, &pce TSRMLS_CC) == FAILURE) {
1591 if (use_autoload) {
1592 if (!silent && !EG(exception)) {
1593 if (fetch_type == ZEND_FETCH_CLASS_INTERFACE) {
1594 zend_error(E_ERROR, "Interface '%s' not found", class_name);
1595 } else if (fetch_type == ZEND_FETCH_CLASS_TRAIT) {
1596 zend_error(E_ERROR, "Trait '%s' not found", class_name);
1597 } else {
1598 zend_error(E_ERROR, "Class '%s' not found", class_name);
1599 }
1600 }
1601 }
1602 return NULL;
1603 }
1604 return *pce;
1605 }
1606 /* }}} */
1607
zend_fetch_class_by_name(const char * class_name,uint class_name_len,const zend_literal * key,int fetch_type TSRMLS_DC)1608 zend_class_entry *zend_fetch_class_by_name(const char *class_name, uint class_name_len, const zend_literal *key, int fetch_type TSRMLS_DC) /* {{{ */
1609 {
1610 zend_class_entry **pce;
1611 int use_autoload = (fetch_type & ZEND_FETCH_CLASS_NO_AUTOLOAD) == 0;
1612
1613 if (zend_lookup_class_ex(class_name, class_name_len, key, use_autoload, &pce TSRMLS_CC) == FAILURE) {
1614 if (use_autoload) {
1615 if ((fetch_type & ZEND_FETCH_CLASS_SILENT) == 0 && !EG(exception)) {
1616 if ((fetch_type & ZEND_FETCH_CLASS_MASK) == ZEND_FETCH_CLASS_INTERFACE) {
1617 zend_error(E_ERROR, "Interface '%s' not found", class_name);
1618 } else if ((fetch_type & ZEND_FETCH_CLASS_MASK) == ZEND_FETCH_CLASS_TRAIT) {
1619 zend_error(E_ERROR, "Trait '%s' not found", class_name);
1620 } else {
1621 zend_error(E_ERROR, "Class '%s' not found", class_name);
1622 }
1623 }
1624 }
1625 return NULL;
1626 }
1627 return *pce;
1628 }
1629 /* }}} */
1630
1631 #define MAX_ABSTRACT_INFO_CNT 3
1632 #define MAX_ABSTRACT_INFO_FMT "%s%s%s%s"
1633 #define DISPLAY_ABSTRACT_FN(idx) \
1634 ai.afn[idx] ? ZEND_FN_SCOPE_NAME(ai.afn[idx]) : "", \
1635 ai.afn[idx] ? "::" : "", \
1636 ai.afn[idx] ? ai.afn[idx]->common.function_name : "", \
1637 ai.afn[idx] && ai.afn[idx + 1] ? ", " : (ai.afn[idx] && ai.cnt > MAX_ABSTRACT_INFO_CNT ? ", ..." : "")
1638
1639 typedef struct _zend_abstract_info {
1640 zend_function *afn[MAX_ABSTRACT_INFO_CNT + 1];
1641 int cnt;
1642 int ctor;
1643 } zend_abstract_info;
1644
zend_verify_abstract_class_function(zend_function * fn,zend_abstract_info * ai TSRMLS_DC)1645 static int zend_verify_abstract_class_function(zend_function *fn, zend_abstract_info *ai TSRMLS_DC) /* {{{ */
1646 {
1647 if (fn->common.fn_flags & ZEND_ACC_ABSTRACT) {
1648 if (ai->cnt < MAX_ABSTRACT_INFO_CNT) {
1649 ai->afn[ai->cnt] = fn;
1650 }
1651 if (fn->common.fn_flags & ZEND_ACC_CTOR) {
1652 if (!ai->ctor) {
1653 ai->cnt++;
1654 ai->ctor = 1;
1655 } else {
1656 ai->afn[ai->cnt] = NULL;
1657 }
1658 } else {
1659 ai->cnt++;
1660 }
1661 }
1662 return 0;
1663 }
1664 /* }}} */
1665
zend_verify_abstract_class(zend_class_entry * ce TSRMLS_DC)1666 void zend_verify_abstract_class(zend_class_entry *ce TSRMLS_DC) /* {{{ */
1667 {
1668 zend_abstract_info ai;
1669
1670 if ((ce->ce_flags & ZEND_ACC_IMPLICIT_ABSTRACT_CLASS) && !(ce->ce_flags & ZEND_ACC_EXPLICIT_ABSTRACT_CLASS)) {
1671 memset(&ai, 0, sizeof(ai));
1672
1673 zend_hash_apply_with_argument(&ce->function_table, (apply_func_arg_t) zend_verify_abstract_class_function, &ai TSRMLS_CC);
1674
1675 if (ai.cnt) {
1676 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 ")",
1677 ce->name, ai.cnt,
1678 ai.cnt > 1 ? "s" : "",
1679 DISPLAY_ABSTRACT_FN(0),
1680 DISPLAY_ABSTRACT_FN(1),
1681 DISPLAY_ABSTRACT_FN(2)
1682 );
1683 }
1684 }
1685 }
1686 /* }}} */
1687
zend_reset_all_cv(HashTable * symbol_table TSRMLS_DC)1688 ZEND_API void zend_reset_all_cv(HashTable *symbol_table TSRMLS_DC) /* {{{ */
1689 {
1690 zend_execute_data *ex;
1691 int i;
1692
1693 for (ex = EG(current_execute_data); ex; ex = ex->prev_execute_data) {
1694 if (ex->op_array && ex->symbol_table == symbol_table) {
1695 for (i = 0; i < ex->op_array->last_var; i++) {
1696 ex->CVs[i] = NULL;
1697 }
1698 }
1699 }
1700 }
1701 /* }}} */
1702
zend_delete_variable(zend_execute_data * ex,HashTable * ht,const char * name,int name_len,ulong hash_value TSRMLS_DC)1703 ZEND_API void zend_delete_variable(zend_execute_data *ex, HashTable *ht, const char *name, int name_len, ulong hash_value TSRMLS_DC) /* {{{ */
1704 {
1705 if (zend_hash_quick_del(ht, name, name_len, hash_value) == SUCCESS) {
1706 name_len--;
1707 while (ex && ex->symbol_table == ht) {
1708 int i;
1709
1710 if (ex->op_array) {
1711 for (i = 0; i < ex->op_array->last_var; i++) {
1712 if (ex->op_array->vars[i].hash_value == hash_value &&
1713 ex->op_array->vars[i].name_len == name_len &&
1714 !memcmp(ex->op_array->vars[i].name, name, name_len)) {
1715 ex->CVs[i] = NULL;
1716 break;
1717 }
1718 }
1719 }
1720 ex = ex->prev_execute_data;
1721 }
1722 }
1723 }
1724 /* }}} */
1725
zend_delete_global_variable_ex(const char * name,int name_len,ulong hash_value TSRMLS_DC)1726 ZEND_API int zend_delete_global_variable_ex(const char *name, int name_len, ulong hash_value TSRMLS_DC) /* {{{ */
1727 {
1728 zend_execute_data *ex;
1729
1730 if (zend_hash_quick_exists(&EG(symbol_table), name, name_len + 1, hash_value)) {
1731 for (ex = EG(current_execute_data); ex; ex = ex->prev_execute_data) {
1732 if (ex->op_array && ex->symbol_table == &EG(symbol_table)) {
1733 int i;
1734 for (i = 0; i < ex->op_array->last_var; i++) {
1735 if (ex->op_array->vars[i].hash_value == hash_value &&
1736 ex->op_array->vars[i].name_len == name_len &&
1737 !memcmp(ex->op_array->vars[i].name, name, name_len)
1738 ) {
1739 ex->CVs[i] = NULL;
1740 break;
1741 }
1742 }
1743 }
1744 }
1745 return zend_hash_quick_del(&EG(symbol_table), name, name_len + 1, hash_value);
1746 }
1747 return FAILURE;
1748 }
1749 /* }}} */
1750
zend_delete_global_variable(const char * name,int name_len TSRMLS_DC)1751 ZEND_API int zend_delete_global_variable(const char *name, int name_len TSRMLS_DC) /* {{{ */
1752 {
1753 return zend_delete_global_variable_ex(name, name_len, zend_inline_hash_func(name, name_len + 1) TSRMLS_CC);
1754 }
1755 /* }}} */
1756
zend_rebuild_symbol_table(TSRMLS_D)1757 ZEND_API void zend_rebuild_symbol_table(TSRMLS_D) /* {{{ */
1758 {
1759 zend_uint i;
1760 zend_execute_data *ex;
1761
1762 if (!EG(active_symbol_table)) {
1763
1764 /* Search for last called user function */
1765 ex = EG(current_execute_data);
1766 while (ex && !ex->op_array) {
1767 ex = ex->prev_execute_data;
1768 }
1769 if (ex && ex->symbol_table) {
1770 EG(active_symbol_table) = ex->symbol_table;
1771 return;
1772 }
1773
1774 if (ex && ex->op_array) {
1775 if (EG(symtable_cache_ptr)>=EG(symtable_cache)) {
1776 /*printf("Cache hit! Reusing %x\n", symtable_cache[symtable_cache_ptr]);*/
1777 EG(active_symbol_table) = *(EG(symtable_cache_ptr)--);
1778 } else {
1779 ALLOC_HASHTABLE(EG(active_symbol_table));
1780 zend_hash_init(EG(active_symbol_table), ex->op_array->last_var, NULL, ZVAL_PTR_DTOR, 0);
1781 /*printf("Cache miss! Initialized %x\n", EG(active_symbol_table));*/
1782 }
1783 ex->symbol_table = EG(active_symbol_table);
1784
1785 if (ex->op_array->this_var != -1 &&
1786 !ex->CVs[ex->op_array->this_var] &&
1787 EG(This)) {
1788 ex->CVs[ex->op_array->this_var] = (zval**)ex->CVs + ex->op_array->last_var + ex->op_array->this_var;
1789 *ex->CVs[ex->op_array->this_var] = EG(This);
1790 }
1791 for (i = 0; i < ex->op_array->last_var; i++) {
1792 if (ex->CVs[i]) {
1793 zend_hash_quick_update(EG(active_symbol_table),
1794 ex->op_array->vars[i].name,
1795 ex->op_array->vars[i].name_len + 1,
1796 ex->op_array->vars[i].hash_value,
1797 (void**)ex->CVs[i],
1798 sizeof(zval*),
1799 (void**)&ex->CVs[i]);
1800 }
1801 }
1802 }
1803 }
1804 }
1805 /* }}} */
1806
1807 /*
1808 * Local variables:
1809 * tab-width: 4
1810 * c-basic-offset: 4
1811 * indent-tabs-mode: t
1812 * End:
1813 */
1814
