1: /*
2: +----------------------------------------------------------------------+
3: | Zend Engine |
4: +----------------------------------------------------------------------+
5: | Copyright (c) 1998-2012 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: zend_execute_API.c,v 1.1 2012/02/21 23:47:52 misho Exp $ */
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:
89: static void zend_extension_activator(zend_extension *extension TSRMLS_DC) /* {{{ */
90: {
91: if (extension->activate) {
92: extension->activate();
93: }
94: }
95: /* }}} */
96:
97: static void zend_extension_deactivator(zend_extension *extension TSRMLS_DC) /* {{{ */
98: {
99: if (extension->deactivate) {
100: extension->deactivate();
101: }
102: }
103: /* }}} */
104:
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:
111: static int clean_non_persistent_function_full(zend_function *function TSRMLS_DC) /* {{{ */
112: {
113: return (function->type != ZEND_INTERNAL_FUNCTION);
114: }
115: /* }}} */
116:
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:
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:
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:
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:
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:
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_dtor(zeh);
267: FREE_ZVAL(zeh);
268: }
269:
270: if (EG(user_exception_handler)) {
271: zeh = EG(user_exception_handler);
272: EG(user_exception_handler) = NULL;
273: zval_dtor(zeh);
274: FREE_ZVAL(zeh);
275: }
276:
277: zend_stack_destroy(&EG(user_error_handlers_error_reporting));
278: zend_stack_init(&EG(user_error_handlers_error_reporting));
279: zend_ptr_stack_clean(&EG(user_error_handlers), ZVAL_DESTRUCTOR, 1);
280: zend_ptr_stack_clean(&EG(user_exception_handlers), ZVAL_DESTRUCTOR, 1);
281: } zend_end_try();
282:
283: zend_try {
284: /* Cleanup static data for functions and arrays.
285: * We need a separate cleanup stage because of the following problem:
286: * Suppose we destroy class X, which destroys the class's function table,
287: * and in the function table we have function foo() that has static $bar.
288: * Now if an object of class X is assigned to $bar, its destructor will be
289: * called and will fail since X's function table is in mid-destruction.
290: * So we want first of all to clean up all data and then move to tables destruction.
291: * Note that only run-time accessed data need to be cleaned up, pre-defined data can
292: * not contain objects and thus are not probelmatic */
293: if (EG(full_tables_cleanup)) {
294: zend_hash_apply(EG(function_table), (apply_func_t) zend_cleanup_function_data_full TSRMLS_CC);
295: } else {
296: zend_hash_reverse_apply(EG(function_table), (apply_func_t) zend_cleanup_function_data TSRMLS_CC);
297: }
298: zend_hash_apply(EG(class_table), (apply_func_t) zend_cleanup_class_data TSRMLS_CC);
299: } zend_end_try();
300:
301: zend_try {
302: zend_vm_stack_destroy(TSRMLS_C);
303:
304: zend_objects_store_free_object_storage(&EG(objects_store) TSRMLS_CC);
305:
306: /* Destroy all op arrays */
307: if (EG(full_tables_cleanup)) {
308: zend_hash_apply(EG(function_table), (apply_func_t) clean_non_persistent_function_full TSRMLS_CC);
309: zend_hash_apply(EG(class_table), (apply_func_t) clean_non_persistent_class_full TSRMLS_CC);
310: } else {
311: zend_hash_reverse_apply(EG(function_table), (apply_func_t) clean_non_persistent_function TSRMLS_CC);
312: zend_hash_reverse_apply(EG(class_table), (apply_func_t) clean_non_persistent_class TSRMLS_CC);
313: }
314:
315: while (EG(symtable_cache_ptr)>=EG(symtable_cache)) {
316: zend_hash_destroy(*EG(symtable_cache_ptr));
317: FREE_HASHTABLE(*EG(symtable_cache_ptr));
318: EG(symtable_cache_ptr)--;
319: }
320: } zend_end_try();
321:
322: zend_try {
323: clean_non_persistent_constants(TSRMLS_C);
324: } zend_end_try();
325:
326: zend_try {
327: #if 0&&ZEND_DEBUG
328: signal(SIGSEGV, original_sigsegv_handler);
329: #endif
330:
331: zend_hash_destroy(&EG(included_files));
332:
333: zend_ptr_stack_destroy(&EG(arg_types_stack));
334: zend_stack_destroy(&EG(user_error_handlers_error_reporting));
335: zend_ptr_stack_destroy(&EG(user_error_handlers));
336: zend_ptr_stack_destroy(&EG(user_exception_handlers));
337: zend_objects_store_destroy(&EG(objects_store));
338: if (EG(in_autoload)) {
339: zend_hash_destroy(EG(in_autoload));
340: FREE_HASHTABLE(EG(in_autoload));
341: }
342: } zend_end_try();
343:
344: zend_shutdown_fpu(TSRMLS_C);
345:
346: EG(active) = 0;
347: }
348: /* }}} */
349:
350: /* return class name and "::" or "". */
351: ZEND_API char *get_active_class_name(char **space TSRMLS_DC) /* {{{ */
352: {
353: if (!zend_is_executing(TSRMLS_C)) {
354: if (space) {
355: *space = "";
356: }
357: return "";
358: }
359: switch (EG(current_execute_data)->function_state.function->type) {
360: case ZEND_USER_FUNCTION:
361: case ZEND_INTERNAL_FUNCTION:
362: {
363: zend_class_entry *ce = EG(current_execute_data)->function_state.function->common.scope;
364:
365: if (space) {
366: *space = ce ? "::" : "";
367: }
368: return ce ? ce->name : "";
369: }
370: default:
371: if (space) {
372: *space = "";
373: }
374: return "";
375: }
376: }
377: /* }}} */
378:
379: ZEND_API char *get_active_function_name(TSRMLS_D) /* {{{ */
380: {
381: if (!zend_is_executing(TSRMLS_C)) {
382: return NULL;
383: }
384: switch (EG(current_execute_data)->function_state.function->type) {
385: case ZEND_USER_FUNCTION: {
386: char *function_name = ((zend_op_array *) EG(current_execute_data)->function_state.function)->function_name;
387:
388: if (function_name) {
389: return function_name;
390: } else {
391: return "main";
392: }
393: }
394: break;
395: case ZEND_INTERNAL_FUNCTION:
396: return ((zend_internal_function *) EG(current_execute_data)->function_state.function)->function_name;
397: break;
398: default:
399: return NULL;
400: }
401: }
402: /* }}} */
403:
404: ZEND_API char *zend_get_executed_filename(TSRMLS_D) /* {{{ */
405: {
406: if (EG(active_op_array)) {
407: return EG(active_op_array)->filename;
408: } else {
409: return "[no active file]";
410: }
411: }
412: /* }}} */
413:
414: ZEND_API uint zend_get_executed_lineno(TSRMLS_D) /* {{{ */
415: {
416: if(EG(exception) && EG(opline_ptr) && active_opline->opcode == ZEND_HANDLE_EXCEPTION &&
417: active_opline->lineno == 0 && EG(opline_before_exception)) {
418: return EG(opline_before_exception)->lineno;
419: }
420: if (EG(opline_ptr)) {
421: return active_opline->lineno;
422: } else {
423: return 0;
424: }
425: }
426: /* }}} */
427:
428: ZEND_API zend_bool zend_is_executing(TSRMLS_D) /* {{{ */
429: {
430: return EG(in_execution);
431: }
432: /* }}} */
433:
434: ZEND_API void _zval_ptr_dtor(zval **zval_ptr ZEND_FILE_LINE_DC) /* {{{ */
435: {
436: zval *zv = *zval_ptr;
437:
438: #if DEBUG_ZEND>=2
439: printf("Reducing refcount for %x (%x): %d->%d\n", *zval_ptr, zval_ptr, Z_REFCOUNT_PP(zval_ptr), Z_REFCOUNT_PP(zval_ptr) - 1);
440: #endif
441: Z_DELREF_P(zv);
442: if (Z_REFCOUNT_P(zv) == 0) {
443: TSRMLS_FETCH();
444:
445: if (zv != &EG(uninitialized_zval)) {
446: GC_REMOVE_ZVAL_FROM_BUFFER(zv);
447: zval_dtor(zv);
448: efree_rel(zv);
449: }
450: } else {
451: TSRMLS_FETCH();
452:
453: if (Z_REFCOUNT_P(zv) == 1) {
454: Z_UNSET_ISREF_P(zv);
455: }
456:
457: GC_ZVAL_CHECK_POSSIBLE_ROOT(zv);
458: }
459: }
460: /* }}} */
461:
462: ZEND_API void _zval_internal_ptr_dtor(zval **zval_ptr ZEND_FILE_LINE_DC) /* {{{ */
463: {
464: #if DEBUG_ZEND>=2
465: printf("Reducing refcount for %x (%x): %d->%d\n", *zval_ptr, zval_ptr, Z_REFCOUNT_PP(zval_ptr), Z_REFCOUNT_PP(zval_ptr) - 1);
466: #endif
467: Z_DELREF_PP(zval_ptr);
468: if (Z_REFCOUNT_PP(zval_ptr) == 0) {
469: zval_internal_dtor(*zval_ptr);
470: free(*zval_ptr);
471: } else if (Z_REFCOUNT_PP(zval_ptr) == 1) {
472: Z_UNSET_ISREF_PP(zval_ptr);
473: }
474: }
475: /* }}} */
476:
477: ZEND_API int zend_is_true(zval *op) /* {{{ */
478: {
479: return i_zend_is_true(op);
480: }
481: /* }}} */
482:
483: #include "../TSRM/tsrm_strtok_r.h"
484:
485: #define IS_VISITED_CONSTANT IS_CONSTANT_INDEX
486: #define IS_CONSTANT_VISITED(p) (Z_TYPE_P(p) & IS_VISITED_CONSTANT)
487: #define Z_REAL_TYPE_P(p) (Z_TYPE_P(p) & ~IS_VISITED_CONSTANT)
488: #define MARK_CONSTANT_VISITED(p) Z_TYPE_P(p) |= IS_VISITED_CONSTANT
489:
490: static void zval_deep_copy(zval **p)
491: {
492: zval *value;
493:
494: ALLOC_ZVAL(value);
495: *value = **p;
496: Z_TYPE_P(value) &= ~IS_CONSTANT_INDEX;
497: zval_copy_ctor(value);
498: Z_TYPE_P(value) = Z_TYPE_PP(p);
499: INIT_PZVAL(value);
500: *p = value;
501: }
502:
503: ZEND_API int zval_update_constant_ex(zval **pp, void *arg, zend_class_entry *scope TSRMLS_DC) /* {{{ */
504: {
505: zval *p = *pp;
506: zend_bool inline_change = (zend_bool) (zend_uintptr_t) arg;
507: zval const_value;
508: char *colon;
509:
510: if (IS_CONSTANT_VISITED(p)) {
511: zend_error(E_ERROR, "Cannot declare self-referencing constant '%s'", Z_STRVAL_P(p));
512: } else if ((Z_TYPE_P(p) & IS_CONSTANT_TYPE_MASK) == IS_CONSTANT) {
513: int refcount;
514: zend_uchar is_ref;
515:
516: SEPARATE_ZVAL_IF_NOT_REF(pp);
517: p = *pp;
518:
519: MARK_CONSTANT_VISITED(p);
520:
521: refcount = Z_REFCOUNT_P(p);
522: is_ref = Z_ISREF_P(p);
523:
524: if (!zend_get_constant_ex(p->value.str.val, p->value.str.len, &const_value, scope, Z_REAL_TYPE_P(p) TSRMLS_CC)) {
525: char *actual = Z_STRVAL_P(p);
526:
527: if ((colon = zend_memrchr(Z_STRVAL_P(p), ':', Z_STRLEN_P(p)))) {
528: zend_error(E_ERROR, "Undefined class constant '%s'", Z_STRVAL_P(p));
529: Z_STRLEN_P(p) -= ((colon - Z_STRVAL_P(p)) + 1);
530: if (inline_change) {
531: colon = estrndup(colon, Z_STRLEN_P(p));
532: efree(Z_STRVAL_P(p));
533: Z_STRVAL_P(p) = colon;
534: } else {
535: Z_STRVAL_P(p) = colon + 1;
536: }
537: } else {
538: char *save = actual, *slash;
539: int actual_len = Z_STRLEN_P(p);
540: if ((Z_TYPE_P(p) & IS_CONSTANT_UNQUALIFIED) && (slash = (char *)zend_memrchr(actual, '\\', actual_len))) {
541: actual = slash + 1;
542: actual_len -= (actual - Z_STRVAL_P(p));
543: if (inline_change) {
544: actual = estrndup(actual, actual_len);
545: Z_STRVAL_P(p) = actual;
546: Z_STRLEN_P(p) = actual_len;
547: }
548: }
549: if (actual[0] == '\\') {
550: if (inline_change) {
551: memmove(Z_STRVAL_P(p), Z_STRVAL_P(p)+1, Z_STRLEN_P(p));
552: --Z_STRLEN_P(p);
553: } else {
554: ++actual;
555: }
556: --actual_len;
557: }
558: if ((Z_TYPE_P(p) & IS_CONSTANT_UNQUALIFIED) == 0) {
559: int fix_save = 0;
560: if (save[0] == '\\') {
561: save++;
562: fix_save = 1;
563: }
564: zend_error(E_ERROR, "Undefined constant '%s'", save);
565: if (fix_save) {
566: save--;
567: }
568: if (inline_change) {
569: efree(save);
570: }
571: save = NULL;
572: }
573: if (inline_change && save && save != actual) {
574: efree(save);
575: }
576: zend_error(E_NOTICE, "Use of undefined constant %s - assumed '%s'", actual, actual);
577: p->type = IS_STRING;
578: if (!inline_change) {
579: Z_STRVAL_P(p) = actual;
580: Z_STRLEN_P(p) = actual_len;
581: zval_copy_ctor(p);
582: }
583: }
584: } else {
585: if (inline_change) {
586: STR_FREE(Z_STRVAL_P(p));
587: }
588: *p = const_value;
589: }
590:
591: Z_SET_REFCOUNT_P(p, refcount);
592: Z_SET_ISREF_TO_P(p, is_ref);
593: } else if (Z_TYPE_P(p) == IS_CONSTANT_ARRAY) {
594: zval **element, *new_val;
595: char *str_index;
596: uint str_index_len;
597: ulong num_index;
598: int ret;
599:
600: SEPARATE_ZVAL_IF_NOT_REF(pp);
601: p = *pp;
602: Z_TYPE_P(p) = IS_ARRAY;
603:
604: if (!inline_change) {
605: zval *tmp;
606: HashTable *tmp_ht = NULL;
607:
608: ALLOC_HASHTABLE(tmp_ht);
609: zend_hash_init(tmp_ht, zend_hash_num_elements(Z_ARRVAL_P(p)), NULL, ZVAL_PTR_DTOR, 0);
610: zend_hash_copy(tmp_ht, Z_ARRVAL_P(p), (copy_ctor_func_t) zval_deep_copy, (void *) &tmp, sizeof(zval *));
611: Z_ARRVAL_P(p) = tmp_ht;
612: }
613:
614: /* First go over the array and see if there are any constant indices */
615: zend_hash_internal_pointer_reset(Z_ARRVAL_P(p));
616: while (zend_hash_get_current_data(Z_ARRVAL_P(p), (void **) &element) == SUCCESS) {
617: if (!(Z_TYPE_PP(element) & IS_CONSTANT_INDEX)) {
618: zend_hash_move_forward(Z_ARRVAL_P(p));
619: continue;
620: }
621: Z_TYPE_PP(element) &= ~IS_CONSTANT_INDEX;
622: if (zend_hash_get_current_key_ex(Z_ARRVAL_P(p), &str_index, &str_index_len, &num_index, 0, NULL) != HASH_KEY_IS_STRING) {
623: zend_hash_move_forward(Z_ARRVAL_P(p));
624: continue;
625: }
626: if (!zend_get_constant_ex(str_index, str_index_len - 3, &const_value, scope, str_index[str_index_len - 2] TSRMLS_CC)) {
627: char *actual, *save = str_index;
628: if ((colon = zend_memrchr(str_index, ':', str_index_len - 3))) {
629: zend_error(E_ERROR, "Undefined class constant '%s'", str_index);
630: str_index_len -= ((colon - str_index) + 1);
631: str_index = colon;
632: } else {
633: if (str_index[str_index_len - 2] & IS_CONSTANT_UNQUALIFIED) {
634: if ((actual = (char *)zend_memrchr(str_index, '\\', str_index_len - 3))) {
635: actual++;
636: str_index_len -= (actual - str_index);
637: str_index = actual;
638: }
639: }
640: if (str_index[0] == '\\') {
641: ++str_index;
642: --str_index_len;
643: }
644: if (save[0] == '\\') {
645: ++save;
646: }
647: if ((str_index[str_index_len - 2] & IS_CONSTANT_UNQUALIFIED) == 0) {
648: zend_error(E_ERROR, "Undefined constant '%s'", save);
649: }
650: zend_error(E_NOTICE, "Use of undefined constant %s - assumed '%s'", str_index, str_index);
651: }
652: ZVAL_STRINGL(&const_value, str_index, str_index_len-3, 1);
653: }
654:
655: if (Z_REFCOUNT_PP(element) > 1) {
656: ALLOC_ZVAL(new_val);
657: *new_val = **element;
658: zval_copy_ctor(new_val);
659: Z_SET_REFCOUNT_P(new_val, 1);
660: Z_UNSET_ISREF_P(new_val);
661:
662: /* preserve this bit for inheritance */
663: Z_TYPE_PP(element) |= IS_CONSTANT_INDEX;
664: zval_ptr_dtor(element);
665: *element = new_val;
666: }
667:
668: switch (Z_TYPE(const_value)) {
669: case IS_STRING:
670: ret = zend_symtable_update_current_key(Z_ARRVAL_P(p), Z_STRVAL(const_value), Z_STRLEN(const_value) + 1, HASH_UPDATE_KEY_IF_BEFORE);
671: break;
672: case IS_BOOL:
673: case IS_LONG:
674: 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);
675: break;
676: case IS_DOUBLE:
677: 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);
678: break;
679: case IS_NULL:
680: ret = zend_hash_update_current_key_ex(Z_ARRVAL_P(p), HASH_KEY_IS_STRING, "", 1, 0, HASH_UPDATE_KEY_IF_BEFORE, NULL);
681: break;
682: default:
683: ret = SUCCESS;
684: break;
685: }
686: if (ret == SUCCESS) {
687: zend_hash_move_forward(Z_ARRVAL_P(p));
688: }
689: zval_dtor(&const_value);
690: }
691: zend_hash_apply_with_argument(Z_ARRVAL_P(p), (apply_func_arg_t) zval_update_constant_inline_change, (void *) scope TSRMLS_CC);
692: zend_hash_internal_pointer_reset(Z_ARRVAL_P(p));
693: }
694: return 0;
695: }
696: /* }}} */
697:
698: ZEND_API int zval_update_constant_inline_change(zval **pp, void *scope TSRMLS_DC) /* {{{ */
699: {
700: return zval_update_constant_ex(pp, (void*)1, scope TSRMLS_CC);
701: }
702: /* }}} */
703:
704: ZEND_API int zval_update_constant_no_inline_change(zval **pp, void *scope TSRMLS_DC) /* {{{ */
705: {
706: return zval_update_constant_ex(pp, (void*)0, scope TSRMLS_CC);
707: }
708: /* }}} */
709:
710: ZEND_API int zval_update_constant(zval **pp, void *arg TSRMLS_DC) /* {{{ */
711: {
712: return zval_update_constant_ex(pp, arg, NULL TSRMLS_CC);
713: }
714: /* }}} */
715:
716: int call_user_function(HashTable *function_table, zval **object_pp, zval *function_name, zval *retval_ptr, zend_uint param_count, zval *params[] TSRMLS_DC) /* {{{ */
717: {
718: zval ***params_array;
719: zend_uint i;
720: int ex_retval;
721: zval *local_retval_ptr = NULL;
722:
723: if (param_count) {
724: params_array = (zval ***) emalloc(sizeof(zval **)*param_count);
725: for (i=0; i<param_count; i++) {
726: params_array[i] = ¶ms[i];
727: }
728: } else {
729: params_array = NULL;
730: }
731: ex_retval = call_user_function_ex(function_table, object_pp, function_name, &local_retval_ptr, param_count, params_array, 1, NULL TSRMLS_CC);
732: if (local_retval_ptr) {
733: COPY_PZVAL_TO_ZVAL(*retval_ptr, local_retval_ptr);
734: } else {
735: INIT_ZVAL(*retval_ptr);
736: }
737: if (params_array) {
738: efree(params_array);
739: }
740: return ex_retval;
741: }
742: /* }}} */
743:
744: 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) /* {{{ */
745: {
746: zend_fcall_info fci;
747:
748: fci.size = sizeof(fci);
749: fci.function_table = function_table;
750: fci.object_ptr = object_pp ? *object_pp : NULL;
751: fci.function_name = function_name;
752: fci.retval_ptr_ptr = retval_ptr_ptr;
753: fci.param_count = param_count;
754: fci.params = params;
755: fci.no_separation = (zend_bool) no_separation;
756: fci.symbol_table = symbol_table;
757:
758: return zend_call_function(&fci, NULL TSRMLS_CC);
759: }
760: /* }}} */
761:
762: int zend_call_function(zend_fcall_info *fci, zend_fcall_info_cache *fci_cache TSRMLS_DC) /* {{{ */
763: {
764: zend_uint i;
765: zval **original_return_value;
766: HashTable *calling_symbol_table;
767: zend_op_array *original_op_array;
768: zend_op **original_opline_ptr;
769: zend_class_entry *current_scope;
770: zend_class_entry *current_called_scope;
771: zend_class_entry *calling_scope = NULL;
772: zend_class_entry *called_scope = NULL;
773: zval *current_this;
774: zend_execute_data execute_data;
775:
776: *fci->retval_ptr_ptr = NULL;
777:
778: if (!EG(active)) {
779: return FAILURE; /* executor is already inactive */
780: }
781:
782: if (EG(exception)) {
783: return FAILURE; /* we would result in an instable executor otherwise */
784: }
785:
786: switch (fci->size) {
787: case sizeof(zend_fcall_info):
788: break; /* nothing to do currently */
789: default:
790: zend_error(E_ERROR, "Corrupted fcall_info provided to zend_call_function()");
791: break;
792: }
793:
794: /* Initialize execute_data */
795: if (EG(current_execute_data)) {
796: execute_data = *EG(current_execute_data);
797: EX(op_array) = NULL;
798: EX(opline) = NULL;
799: EX(object) = NULL;
800: } else {
801: /* This only happens when we're called outside any execute()'s
802: * It shouldn't be strictly necessary to NULL execute_data out,
803: * but it may make bugs easier to spot
804: */
805: memset(&execute_data, 0, sizeof(zend_execute_data));
806: }
807:
808: if (!fci_cache || !fci_cache->initialized) {
809: zend_fcall_info_cache fci_cache_local;
810: char *callable_name;
811: char *error = NULL;
812:
813: if (!fci_cache) {
814: fci_cache = &fci_cache_local;
815: }
816:
817: if (!zend_is_callable_ex(fci->function_name, fci->object_ptr, IS_CALLABLE_CHECK_SILENT, &callable_name, NULL, fci_cache, &error TSRMLS_CC)) {
818: if (error) {
819: zend_error(E_WARNING, "Invalid callback %s, %s", callable_name, error);
820: efree(error);
821: }
822: if (callable_name) {
823: efree(callable_name);
824: }
825: return FAILURE;
826: } else if (error) {
827: /* Capitalize the first latter of the error message */
828: if (error[0] >= 'a' && error[0] <= 'z') {
829: error[0] += ('A' - 'a');
830: }
831: zend_error(E_STRICT, "%s", error);
832: efree(error);
833: }
834: efree(callable_name);
835: }
836:
837: EX(function_state).function = fci_cache->function_handler;
838: calling_scope = fci_cache->calling_scope;
839: called_scope = fci_cache->called_scope;
840: fci->object_ptr = fci_cache->object_ptr;
841: EX(object) = fci->object_ptr;
842: if (fci->object_ptr && Z_TYPE_P(fci->object_ptr) == IS_OBJECT &&
843: (!EG(objects_store).object_buckets || !EG(objects_store).object_buckets[Z_OBJ_HANDLE_P(fci->object_ptr)].valid)) {
844: return FAILURE;
845: }
846:
847: if (EX(function_state).function->common.fn_flags & (ZEND_ACC_ABSTRACT|ZEND_ACC_DEPRECATED)) {
848: if (EX(function_state).function->common.fn_flags & ZEND_ACC_ABSTRACT) {
849: 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);
850: }
851: if (EX(function_state).function->common.fn_flags & ZEND_ACC_DEPRECATED) {
852: zend_error(E_DEPRECATED, "Function %s%s%s() is deprecated",
853: EX(function_state).function->common.scope ? EX(function_state).function->common.scope->name : "",
854: EX(function_state).function->common.scope ? "::" : "",
855: EX(function_state).function->common.function_name);
856: }
857: }
858:
859: ZEND_VM_STACK_GROW_IF_NEEDED(fci->param_count + 1);
860:
861: for (i=0; i<fci->param_count; i++) {
862: zval *param;
863:
864: if (EX(function_state).function->type == ZEND_INTERNAL_FUNCTION
865: && (EX(function_state).function->common.fn_flags & ZEND_ACC_CALL_VIA_HANDLER) == 0
866: && !ARG_SHOULD_BE_SENT_BY_REF(EX(function_state).function, i + 1)
867: && PZVAL_IS_REF(*fci->params[i])) {
868: ALLOC_ZVAL(param);
869: *param = **(fci->params[i]);
870: INIT_PZVAL(param);
871: zval_copy_ctor(param);
872: } else if (ARG_SHOULD_BE_SENT_BY_REF(EX(function_state).function, i + 1)
873: && !PZVAL_IS_REF(*fci->params[i])) {
874:
875: if (Z_REFCOUNT_PP(fci->params[i]) > 1) {
876: zval *new_zval;
877:
878: if (fci->no_separation &&
879: !ARG_MAY_BE_SENT_BY_REF(EX(function_state).function, i + 1)) {
880: if(i) {
881: /* hack to clean up the stack */
882: zend_vm_stack_push_nocheck((void *) (zend_uintptr_t)i TSRMLS_CC);
883: zend_vm_stack_clear_multiple(TSRMLS_C);
884: }
885:
886: zend_error(E_WARNING, "Parameter %d to %s%s%s() expected to be a reference, value given",
887: i+1,
888: EX(function_state).function->common.scope ? EX(function_state).function->common.scope->name : "",
889: EX(function_state).function->common.scope ? "::" : "",
890: EX(function_state).function->common.function_name);
891: return FAILURE;
892: }
893:
894: ALLOC_ZVAL(new_zval);
895: *new_zval = **fci->params[i];
896: zval_copy_ctor(new_zval);
897: Z_SET_REFCOUNT_P(new_zval, 1);
898: Z_DELREF_PP(fci->params[i]);
899: *fci->params[i] = new_zval;
900: }
901: Z_ADDREF_PP(fci->params[i]);
902: Z_SET_ISREF_PP(fci->params[i]);
903: param = *fci->params[i];
904: } else if (*fci->params[i] != &EG(uninitialized_zval)) {
905: Z_ADDREF_PP(fci->params[i]);
906: param = *fci->params[i];
907: } else {
908: ALLOC_ZVAL(param);
909: *param = **(fci->params[i]);
910: INIT_PZVAL(param);
911: }
912: zend_vm_stack_push_nocheck(param TSRMLS_CC);
913: }
914:
915: EX(function_state).arguments = zend_vm_stack_top(TSRMLS_C);
916: zend_vm_stack_push_nocheck((void*)(zend_uintptr_t)fci->param_count TSRMLS_CC);
917:
918: current_scope = EG(scope);
919: EG(scope) = calling_scope;
920:
921: current_this = EG(This);
922:
923: current_called_scope = EG(called_scope);
924: if (called_scope) {
925: EG(called_scope) = called_scope;
926: } else if (EX(function_state).function->type != ZEND_INTERNAL_FUNCTION) {
927: EG(called_scope) = NULL;
928: }
929:
930: if (fci->object_ptr) {
931: if ((EX(function_state).function->common.fn_flags & ZEND_ACC_STATIC)) {
932: EG(This) = NULL;
933: } else {
934: EG(This) = fci->object_ptr;
935:
936: if (!PZVAL_IS_REF(EG(This))) {
937: Z_ADDREF_P(EG(This)); /* For $this pointer */
938: } else {
939: zval *this_ptr;
940:
941: ALLOC_ZVAL(this_ptr);
942: *this_ptr = *EG(This);
943: INIT_PZVAL(this_ptr);
944: zval_copy_ctor(this_ptr);
945: EG(This) = this_ptr;
946: }
947: }
948: } else {
949: EG(This) = NULL;
950: }
951:
952: EX(prev_execute_data) = EG(current_execute_data);
953: EG(current_execute_data) = &execute_data;
954:
955: if (EX(function_state).function->type == ZEND_USER_FUNCTION) {
956: calling_symbol_table = EG(active_symbol_table);
957: EG(scope) = EX(function_state).function->common.scope;
958: if (fci->symbol_table) {
959: EG(active_symbol_table) = fci->symbol_table;
960: } else {
961: EG(active_symbol_table) = NULL;
962: }
963:
964: original_return_value = EG(return_value_ptr_ptr);
965: original_op_array = EG(active_op_array);
966: EG(return_value_ptr_ptr) = fci->retval_ptr_ptr;
967: EG(active_op_array) = (zend_op_array *) EX(function_state).function;
968: original_opline_ptr = EG(opline_ptr);
969: zend_execute(EG(active_op_array) TSRMLS_CC);
970: if (!fci->symbol_table && EG(active_symbol_table)) {
971: if (EG(symtable_cache_ptr)>=EG(symtable_cache_limit)) {
972: zend_hash_destroy(EG(active_symbol_table));
973: FREE_HASHTABLE(EG(active_symbol_table));
974: } else {
975: /* clean before putting into the cache, since clean
976: could call dtors, which could use cached hash */
977: zend_hash_clean(EG(active_symbol_table));
978: *(++EG(symtable_cache_ptr)) = EG(active_symbol_table);
979: }
980: }
981: EG(active_symbol_table) = calling_symbol_table;
982: EG(active_op_array) = original_op_array;
983: EG(return_value_ptr_ptr)=original_return_value;
984: EG(opline_ptr) = original_opline_ptr;
985: } else if (EX(function_state).function->type == ZEND_INTERNAL_FUNCTION) {
986: int call_via_handler = (EX(function_state).function->common.fn_flags & ZEND_ACC_CALL_VIA_HANDLER) != 0;
987: ALLOC_INIT_ZVAL(*fci->retval_ptr_ptr);
988: if (EX(function_state).function->common.scope) {
989: EG(scope) = EX(function_state).function->common.scope;
990: }
991: ((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);
992: /* We shouldn't fix bad extensions here,
993: because it can break proper ones (Bug #34045)
994: if (!EX(function_state).function->common.return_reference)
995: {
996: INIT_PZVAL(*fci->retval_ptr_ptr);
997: }*/
998: if (EG(exception) && fci->retval_ptr_ptr) {
999: zval_ptr_dtor(fci->retval_ptr_ptr);
1000: *fci->retval_ptr_ptr = NULL;
1001: }
1002:
1003: if (call_via_handler) {
1004: /* We must re-initialize function again */
1005: fci_cache->initialized = 0;
1006: }
1007: } else { /* ZEND_OVERLOADED_FUNCTION */
1008: ALLOC_INIT_ZVAL(*fci->retval_ptr_ptr);
1009:
1010: /* Not sure what should be done here if it's a static method */
1011: if (fci->object_ptr) {
1012: 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);
1013: } else {
1014: zend_error_noreturn(E_ERROR, "Cannot call overloaded function for non-object");
1015: }
1016:
1017: if (EX(function_state).function->type == ZEND_OVERLOADED_FUNCTION_TEMPORARY) {
1018: efree(EX(function_state).function->common.function_name);
1019: }
1020: efree(EX(function_state).function);
1021:
1022: if (EG(exception) && fci->retval_ptr_ptr) {
1023: zval_ptr_dtor(fci->retval_ptr_ptr);
1024: *fci->retval_ptr_ptr = NULL;
1025: }
1026: }
1027: zend_vm_stack_clear_multiple(TSRMLS_C);
1028:
1029: if (EG(This)) {
1030: zval_ptr_dtor(&EG(This));
1031: }
1032: EG(called_scope) = current_called_scope;
1033: EG(scope) = current_scope;
1034: EG(This) = current_this;
1035: EG(current_execute_data) = EX(prev_execute_data);
1036:
1037: if (EG(exception)) {
1038: zend_throw_exception_internal(NULL TSRMLS_CC);
1039: }
1040: return SUCCESS;
1041: }
1042: /* }}} */
1043:
1044: ZEND_API int zend_lookup_class_ex(const char *name, int name_length, int use_autoload, zend_class_entry ***ce TSRMLS_DC) /* {{{ */
1045: {
1046: zval **args[1];
1047: zval autoload_function;
1048: zval *class_name_ptr;
1049: zval *retval_ptr = NULL;
1050: int retval, lc_length;
1051: char *lc_name;
1052: char *lc_free;
1053: zend_fcall_info fcall_info;
1054: zend_fcall_info_cache fcall_cache;
1055: char dummy = 1;
1056: ulong hash;
1057: ALLOCA_FLAG(use_heap)
1058:
1059: if (name == NULL || !name_length) {
1060: return FAILURE;
1061: }
1062:
1063: lc_free = lc_name = do_alloca(name_length + 1, use_heap);
1064: zend_str_tolower_copy(lc_name, name, name_length);
1065: lc_length = name_length + 1;
1066:
1067: if (lc_name[0] == '\\') {
1068: lc_name += 1;
1069: lc_length -= 1;
1070: }
1071:
1072: hash = zend_inline_hash_func(lc_name, lc_length);
1073:
1074: if (zend_hash_quick_find(EG(class_table), lc_name, lc_length, hash, (void **) ce) == SUCCESS) {
1075: free_alloca(lc_free, use_heap);
1076: return SUCCESS;
1077: }
1078:
1079: /* The compiler is not-reentrant. Make sure we __autoload() only during run-time
1080: * (doesn't impact fuctionality of __autoload()
1081: */
1082: if (!use_autoload || zend_is_compiling(TSRMLS_C)) {
1083: free_alloca(lc_free, use_heap);
1084: return FAILURE;
1085: }
1086:
1087: if (EG(in_autoload) == NULL) {
1088: ALLOC_HASHTABLE(EG(in_autoload));
1089: zend_hash_init(EG(in_autoload), 0, NULL, NULL, 0);
1090: }
1091:
1092: if (zend_hash_quick_add(EG(in_autoload), lc_name, lc_length, hash, (void**)&dummy, sizeof(char), NULL) == FAILURE) {
1093: free_alloca(lc_free, use_heap);
1094: return FAILURE;
1095: }
1096:
1097: ZVAL_STRINGL(&autoload_function, ZEND_AUTOLOAD_FUNC_NAME, sizeof(ZEND_AUTOLOAD_FUNC_NAME) - 1, 0);
1098:
1099: ALLOC_ZVAL(class_name_ptr);
1100: INIT_PZVAL(class_name_ptr);
1101: if (name[0] == '\\') {
1102: ZVAL_STRINGL(class_name_ptr, name+1, name_length-1, 1);
1103: } else {
1104: ZVAL_STRINGL(class_name_ptr, name, name_length, 1);
1105: }
1106:
1107: args[0] = &class_name_ptr;
1108:
1109: fcall_info.size = sizeof(fcall_info);
1110: fcall_info.function_table = EG(function_table);
1111: fcall_info.function_name = &autoload_function;
1112: fcall_info.symbol_table = NULL;
1113: fcall_info.retval_ptr_ptr = &retval_ptr;
1114: fcall_info.param_count = 1;
1115: fcall_info.params = args;
1116: fcall_info.object_ptr = NULL;
1117: fcall_info.no_separation = 1;
1118:
1119: fcall_cache.initialized = EG(autoload_func) ? 1 : 0;
1120: fcall_cache.function_handler = EG(autoload_func);
1121: fcall_cache.calling_scope = NULL;
1122: fcall_cache.called_scope = NULL;
1123: fcall_cache.object_ptr = NULL;
1124:
1125: zend_exception_save(TSRMLS_C);
1126: retval = zend_call_function(&fcall_info, &fcall_cache TSRMLS_CC);
1127: zend_exception_restore(TSRMLS_C);
1128:
1129: EG(autoload_func) = fcall_cache.function_handler;
1130:
1131: zval_ptr_dtor(&class_name_ptr);
1132:
1133: zend_hash_quick_del(EG(in_autoload), lc_name, lc_length, hash);
1134:
1135: if (retval_ptr) {
1136: zval_ptr_dtor(&retval_ptr);
1137: }
1138:
1139: if (retval == FAILURE) {
1140: free_alloca(lc_free, use_heap);
1141: return FAILURE;
1142: }
1143:
1144: retval = zend_hash_quick_find(EG(class_table), lc_name, lc_length, hash, (void **) ce);
1145: free_alloca(lc_free, use_heap);
1146: return retval;
1147: }
1148: /* }}} */
1149:
1150: ZEND_API int zend_lookup_class(const char *name, int name_length, zend_class_entry ***ce TSRMLS_DC) /* {{{ */
1151: {
1152: return zend_lookup_class_ex(name, name_length, 1, ce TSRMLS_CC);
1153: }
1154: /* }}} */
1155:
1156: ZEND_API int zend_eval_stringl(char *str, int str_len, zval *retval_ptr, char *string_name TSRMLS_DC) /* {{{ */
1157: {
1158: zval pv;
1159: zend_op_array *new_op_array;
1160: zend_op_array *original_active_op_array = EG(active_op_array);
1161: zend_uint original_compiler_options;
1162: int retval;
1163:
1164: if (retval_ptr) {
1165: Z_STRLEN(pv) = str_len + sizeof("return ;") - 1;
1166: Z_STRVAL(pv) = emalloc(Z_STRLEN(pv) + 1);
1167: memcpy(Z_STRVAL(pv), "return ", sizeof("return ") - 1);
1168: memcpy(Z_STRVAL(pv) + sizeof("return ") - 1, str, str_len);
1169: Z_STRVAL(pv)[Z_STRLEN(pv) - 1] = ';';
1170: Z_STRVAL(pv)[Z_STRLEN(pv)] = '\0';
1171: } else {
1172: Z_STRLEN(pv) = str_len;
1173: Z_STRVAL(pv) = str;
1174: }
1175: Z_TYPE(pv) = IS_STRING;
1176:
1177: /*printf("Evaluating '%s'\n", pv.value.str.val);*/
1178:
1179: original_compiler_options = CG(compiler_options);
1180: CG(compiler_options) = ZEND_COMPILE_DEFAULT_FOR_EVAL;
1181: new_op_array = zend_compile_string(&pv, string_name TSRMLS_CC);
1182: CG(compiler_options) = original_compiler_options;
1183:
1184: if (new_op_array) {
1185: zval *local_retval_ptr=NULL;
1186: zval **original_return_value_ptr_ptr = EG(return_value_ptr_ptr);
1187: zend_op **original_opline_ptr = EG(opline_ptr);
1188: int orig_interactive = CG(interactive);
1189:
1190: EG(return_value_ptr_ptr) = &local_retval_ptr;
1191: EG(active_op_array) = new_op_array;
1192: EG(no_extensions)=1;
1193: if (!EG(active_symbol_table)) {
1194: zend_rebuild_symbol_table(TSRMLS_C);
1195: }
1196: CG(interactive) = 0;
1197:
1198: zend_execute(new_op_array TSRMLS_CC);
1199:
1200: CG(interactive) = orig_interactive;
1201: if (local_retval_ptr) {
1202: if (retval_ptr) {
1203: COPY_PZVAL_TO_ZVAL(*retval_ptr, local_retval_ptr);
1204: } else {
1205: zval_ptr_dtor(&local_retval_ptr);
1206: }
1207: } else {
1208: if (retval_ptr) {
1209: INIT_ZVAL(*retval_ptr);
1210: }
1211: }
1212:
1213: EG(no_extensions)=0;
1214: EG(opline_ptr) = original_opline_ptr;
1215: EG(active_op_array) = original_active_op_array;
1216: destroy_op_array(new_op_array TSRMLS_CC);
1217: efree(new_op_array);
1218: EG(return_value_ptr_ptr) = original_return_value_ptr_ptr;
1219: retval = SUCCESS;
1220: } else {
1221: retval = FAILURE;
1222: }
1223: if (retval_ptr) {
1224: zval_dtor(&pv);
1225: }
1226: return retval;
1227: }
1228: /* }}} */
1229:
1230: ZEND_API int zend_eval_string(char *str, zval *retval_ptr, char *string_name TSRMLS_DC) /* {{{ */
1231: {
1232: return zend_eval_stringl(str, strlen(str), retval_ptr, string_name TSRMLS_CC);
1233: }
1234: /* }}} */
1235:
1236: ZEND_API int zend_eval_stringl_ex(char *str, int str_len, zval *retval_ptr, char *string_name, int handle_exceptions TSRMLS_DC) /* {{{ */
1237: {
1238: int result;
1239:
1240: result = zend_eval_stringl(str, str_len, retval_ptr, string_name TSRMLS_CC);
1241: if (handle_exceptions && EG(exception)) {
1242: zend_exception_error(EG(exception), E_ERROR TSRMLS_CC);
1243: result = FAILURE;
1244: }
1245: return result;
1246: }
1247: /* }}} */
1248:
1249: ZEND_API int zend_eval_string_ex(char *str, zval *retval_ptr, char *string_name, int handle_exceptions TSRMLS_DC) /* {{{ */
1250: {
1251: return zend_eval_stringl_ex(str, strlen(str), retval_ptr, string_name, handle_exceptions TSRMLS_CC);
1252: }
1253: /* }}} */
1254:
1255: void execute_new_code(TSRMLS_D) /* {{{ */
1256: {
1257: zend_op *opline, *end;
1258: zend_op *ret_opline;
1259: int orig_interactive;
1260:
1261: if (!(CG(active_op_array)->fn_flags & ZEND_ACC_INTERACTIVE)
1262: || CG(active_op_array)->backpatch_count>0
1263: || CG(active_op_array)->function_name
1264: || CG(active_op_array)->type!=ZEND_USER_FUNCTION) {
1265: return;
1266: }
1267:
1268: ret_opline = get_next_op(CG(active_op_array) TSRMLS_CC);
1269: ret_opline->opcode = ZEND_RETURN;
1270: ret_opline->op1.op_type = IS_CONST;
1271: INIT_ZVAL(ret_opline->op1.u.constant);
1272: SET_UNUSED(ret_opline->op2);
1273:
1274: if (!CG(active_op_array)->start_op) {
1275: CG(active_op_array)->start_op = CG(active_op_array)->opcodes;
1276: }
1277:
1278: opline=CG(active_op_array)->start_op;
1279: end=CG(active_op_array)->opcodes+CG(active_op_array)->last;
1280:
1281: while (opline<end) {
1282: if (opline->op1.op_type == IS_CONST) {
1283: Z_SET_ISREF(opline->op1.u.constant);
1284: Z_SET_REFCOUNT(opline->op1.u.constant, 2); /* Make sure is_ref won't be reset */
1285: }
1286: if (opline->op2.op_type == IS_CONST) {
1287: Z_SET_ISREF(opline->op2.u.constant);
1288: Z_SET_REFCOUNT(opline->op2.u.constant, 2);
1289: }
1290: switch (opline->opcode) {
1291: case ZEND_GOTO:
1292: if (Z_TYPE(opline->op2.u.constant) != IS_LONG) {
1293: zend_resolve_goto_label(CG(active_op_array), opline, 1 TSRMLS_CC);
1294: }
1295: /* break omitted intentionally */
1296: case ZEND_JMP:
1297: opline->op1.u.jmp_addr = &CG(active_op_array)->opcodes[opline->op1.u.opline_num];
1298: break;
1299: case ZEND_JMPZ:
1300: case ZEND_JMPNZ:
1301: case ZEND_JMPZ_EX:
1302: case ZEND_JMPNZ_EX:
1303: case ZEND_JMP_SET:
1304: opline->op2.u.jmp_addr = &CG(active_op_array)->opcodes[opline->op2.u.opline_num];
1305: break;
1306: }
1307: ZEND_VM_SET_OPCODE_HANDLER(opline);
1308: opline++;
1309: }
1310:
1311: zend_release_labels(TSRMLS_C);
1312:
1313: EG(return_value_ptr_ptr) = NULL;
1314: EG(active_op_array) = CG(active_op_array);
1315: orig_interactive = CG(interactive);
1316: CG(interactive) = 0;
1317: zend_execute(CG(active_op_array) TSRMLS_CC);
1318: CG(interactive) = orig_interactive;
1319:
1320: if (EG(exception)) {
1321: zend_exception_error(EG(exception), E_ERROR TSRMLS_CC);
1322: }
1323:
1324: CG(active_op_array)->last -= 1; /* get rid of that ZEND_RETURN */
1325: CG(active_op_array)->start_op = CG(active_op_array)->opcodes+CG(active_op_array)->last;
1326: }
1327: /* }}} */
1328:
1329: ZEND_API void zend_timeout(int dummy) /* {{{ */
1330: {
1331: TSRMLS_FETCH();
1332:
1333: if (zend_on_timeout) {
1334: zend_on_timeout(EG(timeout_seconds) TSRMLS_CC);
1335: }
1336:
1337: zend_error(E_ERROR, "Maximum execution time of %d second%s exceeded", EG(timeout_seconds), EG(timeout_seconds) == 1 ? "" : "s");
1338: }
1339: /* }}} */
1340:
1341: #ifdef ZEND_WIN32
1342: static LRESULT CALLBACK zend_timeout_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) /* {{{ */
1343: {
1344: switch (message) {
1345: case WM_DESTROY:
1346: PostQuitMessage(0);
1347: break;
1348: case WM_REGISTER_ZEND_TIMEOUT:
1349: /* wParam is the thread id pointer, lParam is the timeout amount in seconds */
1350: if (lParam == 0) {
1351: KillTimer(timeout_window, wParam);
1352: } else {
1353: #ifdef ZTS
1354: void ***tsrm_ls;
1355: #endif
1356: SetTimer(timeout_window, wParam, lParam*1000, NULL);
1357: #ifdef ZTS
1358: tsrm_ls = ts_resource_ex(0, &wParam);
1359: if (!tsrm_ls) {
1360: /* shouldn't normally happen */
1361: break;
1362: }
1363: #endif
1364: EG(timed_out) = 0;
1365: }
1366: break;
1367: case WM_UNREGISTER_ZEND_TIMEOUT:
1368: /* wParam is the thread id pointer */
1369: KillTimer(timeout_window, wParam);
1370: break;
1371: case WM_TIMER: {
1372: #ifdef ZTS
1373: void ***tsrm_ls;
1374:
1375: tsrm_ls = ts_resource_ex(0, &wParam);
1376: if (!tsrm_ls) {
1377: /* Thread died before receiving its timeout? */
1378: break;
1379: }
1380: #endif
1381: KillTimer(timeout_window, wParam);
1382: EG(timed_out) = 1;
1383: }
1384: break;
1385: default:
1386: return DefWindowProc(hWnd, message, wParam, lParam);
1387: }
1388: return 0;
1389: }
1390: /* }}} */
1391:
1392: static unsigned __stdcall timeout_thread_proc(void *pArgs) /* {{{ */
1393: {
1394: MSG message;
1395:
1396: wc.style=0;
1397: wc.lpfnWndProc = zend_timeout_WndProc;
1398: wc.cbClsExtra=0;
1399: wc.cbWndExtra=0;
1400: wc.hInstance=NULL;
1401: wc.hIcon=NULL;
1402: wc.hCursor=NULL;
1403: wc.hbrBackground=(HBRUSH)(COLOR_BACKGROUND + 5);
1404: wc.lpszMenuName=NULL;
1405: wc.lpszClassName = "Zend Timeout Window";
1406: if (!RegisterClass(&wc)) {
1407: return -1;
1408: }
1409: timeout_window = CreateWindow(wc.lpszClassName, wc.lpszClassName, 0, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, NULL, NULL);
1410: SetEvent(timeout_thread_event);
1411: while (GetMessage(&message, NULL, 0, 0)) {
1412: SendMessage(timeout_window, message.message, message.wParam, message.lParam);
1413: if (message.message == WM_QUIT) {
1414: break;
1415: }
1416: }
1417: DestroyWindow(timeout_window);
1418: UnregisterClass(wc.lpszClassName, NULL);
1419: SetEvent(timeout_thread_handle);
1420: return 0;
1421: }
1422: /* }}} */
1423:
1424: void zend_init_timeout_thread(void) /* {{{ */
1425: {
1426: timeout_thread_event = CreateEvent(NULL, FALSE, FALSE, NULL);
1427: timeout_thread_handle = CreateEvent(NULL, FALSE, FALSE, NULL);
1428: _beginthreadex(NULL, 0, timeout_thread_proc, NULL, 0, &timeout_thread_id);
1429: WaitForSingleObject(timeout_thread_event, INFINITE);
1430: }
1431: /* }}} */
1432:
1433: void zend_shutdown_timeout_thread(void) /* {{{ */
1434: {
1435: if (!timeout_thread_initialized) {
1436: return;
1437: }
1438: PostThreadMessage(timeout_thread_id, WM_QUIT, 0, 0);
1439:
1440: /* Wait for thread termination */
1441: WaitForSingleObject(timeout_thread_handle, 5000);
1442: CloseHandle(timeout_thread_handle);
1443: timeout_thread_initialized = 0;
1444: }
1445: /* }}} */
1446:
1447: #endif
1448:
1449: /* This one doesn't exists on QNX */
1450: #ifndef SIGPROF
1451: #define SIGPROF 27
1452: #endif
1453:
1454: void zend_set_timeout(long seconds, int reset_signals) /* {{{ */
1455: {
1456: TSRMLS_FETCH();
1457:
1458: EG(timeout_seconds) = seconds;
1459:
1460: #ifdef ZEND_WIN32
1461: if(!seconds) {
1462: return;
1463: }
1464: if (timeout_thread_initialized == 0 && InterlockedIncrement(&timeout_thread_initialized) == 1) {
1465: /* We start up this process-wide thread here and not in zend_startup(), because if Zend
1466: * is initialized inside a DllMain(), you're not supposed to start threads from it.
1467: */
1468: zend_init_timeout_thread();
1469: }
1470: PostThreadMessage(timeout_thread_id, WM_REGISTER_ZEND_TIMEOUT, (WPARAM) GetCurrentThreadId(), (LPARAM) seconds);
1471: #else
1472: # ifdef HAVE_SETITIMER
1473: {
1474: struct itimerval t_r; /* timeout requested */
1475: sigset_t sigset;
1476:
1477: if(seconds) {
1478: t_r.it_value.tv_sec = seconds;
1479: t_r.it_value.tv_usec = t_r.it_interval.tv_sec = t_r.it_interval.tv_usec = 0;
1480:
1481: # ifdef __CYGWIN__
1482: setitimer(ITIMER_REAL, &t_r, NULL);
1483: }
1484: if(reset_signals) {
1485: signal(SIGALRM, zend_timeout);
1486: sigemptyset(&sigset);
1487: sigaddset(&sigset, SIGALRM);
1488: }
1489: # else
1490: setitimer(ITIMER_PROF, &t_r, NULL);
1491: }
1492: if(reset_signals) {
1493: signal(SIGPROF, zend_timeout);
1494: sigemptyset(&sigset);
1495: sigaddset(&sigset, SIGPROF);
1496: }
1497: # endif
1498: if(reset_signals) {
1499: sigprocmask(SIG_UNBLOCK, &sigset, NULL);
1500: }
1501: }
1502: # endif
1503: #endif
1504: }
1505: /* }}} */
1506:
1507: void zend_unset_timeout(TSRMLS_D) /* {{{ */
1508: {
1509: #ifdef ZEND_WIN32
1510: if(timeout_thread_initialized) {
1511: PostThreadMessage(timeout_thread_id, WM_UNREGISTER_ZEND_TIMEOUT, (WPARAM) GetCurrentThreadId(), (LPARAM) 0);
1512: }
1513: #else
1514: # ifdef HAVE_SETITIMER
1515: if (EG(timeout_seconds)) {
1516: struct itimerval no_timeout;
1517:
1518: 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;
1519:
1520: #ifdef __CYGWIN__
1521: setitimer(ITIMER_REAL, &no_timeout, NULL);
1522: #else
1523: setitimer(ITIMER_PROF, &no_timeout, NULL);
1524: #endif
1525: }
1526: # endif
1527: #endif
1528: }
1529: /* }}} */
1530:
1531: zend_class_entry *zend_fetch_class(const char *class_name, uint class_name_len, int fetch_type TSRMLS_DC) /* {{{ */
1532: {
1533: zend_class_entry **pce;
1534: int use_autoload = (fetch_type & ZEND_FETCH_CLASS_NO_AUTOLOAD) == 0;
1535: int silent = (fetch_type & ZEND_FETCH_CLASS_SILENT) != 0;
1536:
1537: fetch_type &= ZEND_FETCH_CLASS_MASK;
1538:
1539: check_fetch_type:
1540: switch (fetch_type) {
1541: case ZEND_FETCH_CLASS_SELF:
1542: if (!EG(scope)) {
1543: zend_error(E_ERROR, "Cannot access self:: when no class scope is active");
1544: }
1545: return EG(scope);
1546: case ZEND_FETCH_CLASS_PARENT:
1547: if (!EG(scope)) {
1548: zend_error(E_ERROR, "Cannot access parent:: when no class scope is active");
1549: }
1550: if (!EG(scope)->parent) {
1551: zend_error(E_ERROR, "Cannot access parent:: when current class scope has no parent");
1552: }
1553: return EG(scope)->parent;
1554: case ZEND_FETCH_CLASS_STATIC:
1555: if (!EG(called_scope)) {
1556: zend_error(E_ERROR, "Cannot access static:: when no class scope is active");
1557: }
1558: return EG(called_scope);
1559: case ZEND_FETCH_CLASS_AUTO: {
1560: fetch_type = zend_get_class_fetch_type(class_name, class_name_len);
1561: if (fetch_type!=ZEND_FETCH_CLASS_DEFAULT) {
1562: goto check_fetch_type;
1563: }
1564: }
1565: break;
1566: }
1567:
1568: if (zend_lookup_class_ex(class_name, class_name_len, use_autoload, &pce TSRMLS_CC) == FAILURE) {
1569: if (use_autoload) {
1570: if (!silent && !EG(exception)) {
1571: if (fetch_type == ZEND_FETCH_CLASS_INTERFACE) {
1572: zend_error(E_ERROR, "Interface '%s' not found", class_name);
1573: } else {
1574: zend_error(E_ERROR, "Class '%s' not found", class_name);
1575: }
1576: }
1577: }
1578: return NULL;
1579: }
1580: return *pce;
1581: }
1582: /* }}} */
1583:
1584: #define MAX_ABSTRACT_INFO_CNT 3
1585: #define MAX_ABSTRACT_INFO_FMT "%s%s%s%s"
1586: #define DISPLAY_ABSTRACT_FN(idx) \
1587: ai.afn[idx] ? ZEND_FN_SCOPE_NAME(ai.afn[idx]) : "", \
1588: ai.afn[idx] ? "::" : "", \
1589: ai.afn[idx] ? ai.afn[idx]->common.function_name : "", \
1590: ai.afn[idx] && ai.afn[idx + 1] ? ", " : (ai.afn[idx] && ai.cnt > MAX_ABSTRACT_INFO_CNT ? ", ..." : "")
1591:
1592: typedef struct _zend_abstract_info {
1593: zend_function *afn[MAX_ABSTRACT_INFO_CNT + 1];
1594: int cnt;
1595: int ctor;
1596: } zend_abstract_info;
1597:
1598: static int zend_verify_abstract_class_function(zend_function *fn, zend_abstract_info *ai TSRMLS_DC) /* {{{ */
1599: {
1600: if (fn->common.fn_flags & ZEND_ACC_ABSTRACT) {
1601: if (ai->cnt < MAX_ABSTRACT_INFO_CNT) {
1602: ai->afn[ai->cnt] = fn;
1603: }
1604: if (fn->common.fn_flags & ZEND_ACC_CTOR) {
1605: if (!ai->ctor) {
1606: ai->cnt++;
1607: ai->ctor = 1;
1608: } else {
1609: ai->afn[ai->cnt] = NULL;
1610: }
1611: } else {
1612: ai->cnt++;
1613: }
1614: }
1615: return 0;
1616: }
1617: /* }}} */
1618:
1619: void zend_verify_abstract_class(zend_class_entry *ce TSRMLS_DC) /* {{{ */
1620: {
1621: zend_abstract_info ai;
1622:
1623: if ((ce->ce_flags & ZEND_ACC_IMPLICIT_ABSTRACT_CLASS) && !(ce->ce_flags & ZEND_ACC_EXPLICIT_ABSTRACT_CLASS)) {
1624: memset(&ai, 0, sizeof(ai));
1625:
1626: zend_hash_apply_with_argument(&ce->function_table, (apply_func_arg_t) zend_verify_abstract_class_function, &ai TSRMLS_CC);
1627:
1628: if (ai.cnt) {
1629: 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 ")",
1630: ce->name, ai.cnt,
1631: ai.cnt > 1 ? "s" : "",
1632: DISPLAY_ABSTRACT_FN(0),
1633: DISPLAY_ABSTRACT_FN(1),
1634: DISPLAY_ABSTRACT_FN(2)
1635: );
1636: }
1637: }
1638: }
1639: /* }}} */
1640:
1641: ZEND_API void zend_reset_all_cv(HashTable *symbol_table TSRMLS_DC) /* {{{ */
1642: {
1643: zend_execute_data *ex;
1644: int i;
1645:
1646: for (ex = EG(current_execute_data); ex; ex = ex->prev_execute_data) {
1647: if (ex->op_array && ex->symbol_table == symbol_table) {
1648: for (i = 0; i < ex->op_array->last_var; i++) {
1649: ex->CVs[i] = NULL;
1650: }
1651: }
1652: }
1653: }
1654: /* }}} */
1655:
1656: ZEND_API int zend_delete_global_variable(char *name, int name_len TSRMLS_DC) /* {{{ */
1657: {
1658: zend_execute_data *ex;
1659: ulong hash_value = zend_inline_hash_func(name, name_len + 1);
1660:
1661: if (zend_hash_quick_exists(&EG(symbol_table), name, name_len + 1, hash_value)) {
1662: for (ex = EG(current_execute_data); ex; ex = ex->prev_execute_data) {
1663: if (ex->op_array && ex->symbol_table == &EG(symbol_table)) {
1664: int i;
1665: for (i = 0; i < ex->op_array->last_var; i++) {
1666: if (ex->op_array->vars[i].hash_value == hash_value &&
1667: ex->op_array->vars[i].name_len == name_len &&
1668: !memcmp(ex->op_array->vars[i].name, name, name_len)
1669: ) {
1670: ex->CVs[i] = NULL;
1671: break;
1672: }
1673: }
1674: }
1675: }
1676: return zend_hash_quick_del(&EG(symbol_table), name, name_len + 1, hash_value);
1677: }
1678: return FAILURE;
1679: }
1680: /* }}} */
1681:
1682: ZEND_API void zend_rebuild_symbol_table(TSRMLS_D) /* {{{ */
1683: {
1684: zend_uint i;
1685: zend_execute_data *ex;
1686:
1687: if (!EG(active_symbol_table)) {
1688:
1689: /* Search for last called user function */
1690: ex = EG(current_execute_data);
1691: while (ex && !ex->op_array) {
1692: ex = ex->prev_execute_data;
1693: }
1694: if (ex && ex->symbol_table) {
1695: EG(active_symbol_table) = ex->symbol_table;
1696: return;
1697: }
1698:
1699: if (ex && ex->op_array) {
1700: if (EG(symtable_cache_ptr)>=EG(symtable_cache)) {
1701: /*printf("Cache hit! Reusing %x\n", symtable_cache[symtable_cache_ptr]);*/
1702: EG(active_symbol_table) = *(EG(symtable_cache_ptr)--);
1703: } else {
1704: ALLOC_HASHTABLE(EG(active_symbol_table));
1705: zend_hash_init(EG(active_symbol_table), 0, NULL, ZVAL_PTR_DTOR, 0);
1706: /*printf("Cache miss! Initialized %x\n", EG(active_symbol_table));*/
1707: }
1708: ex->symbol_table = EG(active_symbol_table);
1709:
1710: if (ex->op_array->this_var != -1 &&
1711: !ex->CVs[ex->op_array->this_var] &&
1712: EG(This)) {
1713: ex->CVs[ex->op_array->this_var] = (zval**)ex->CVs + ex->op_array->last_var + ex->op_array->this_var;
1714: *ex->CVs[ex->op_array->this_var] = EG(This);
1715: }
1716: for (i = 0; i < ex->op_array->last_var; i++) {
1717: if (ex->CVs[i]) {
1718: zend_hash_quick_update(EG(active_symbol_table),
1719: ex->op_array->vars[i].name,
1720: ex->op_array->vars[i].name_len + 1,
1721: ex->op_array->vars[i].hash_value,
1722: (void**)ex->CVs[i],
1723: sizeof(zval*),
1724: (void**)&ex->CVs[i]);
1725: }
1726: }
1727: }
1728: }
1729: }
1730: /* }}} */
1731:
1732: /*
1733: * Local variables:
1734: * tab-width: 4
1735: * c-basic-offset: 4
1736: * indent-tabs-mode: t
1737: * End:
1738: */
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