1 /*
2 +----------------------------------------------------------------------+
3 | Zend Engine |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 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@php.net> |
16 | Zeev Suraski <zeev@php.net> |
17 +----------------------------------------------------------------------+
18 */
19
20 #include "zend.h"
21 #include "zend_API.h"
22 #include "zend_gc.h"
23 #include "zend_builtin_functions.h"
24 #include "zend_constants.h"
25 #include "zend_ini.h"
26 #include "zend_exceptions.h"
27 #include "zend_extensions.h"
28 #include "zend_closures.h"
29 #include "zend_generators.h"
30
31 static ZEND_FUNCTION(zend_version);
32 static ZEND_FUNCTION(func_num_args);
33 static ZEND_FUNCTION(func_get_arg);
34 static ZEND_FUNCTION(func_get_args);
35 static ZEND_FUNCTION(strlen);
36 static ZEND_FUNCTION(strcmp);
37 static ZEND_FUNCTION(strncmp);
38 static ZEND_FUNCTION(strcasecmp);
39 static ZEND_FUNCTION(strncasecmp);
40 static ZEND_FUNCTION(each);
41 static ZEND_FUNCTION(error_reporting);
42 static ZEND_FUNCTION(define);
43 static ZEND_FUNCTION(defined);
44 static ZEND_FUNCTION(get_class);
45 static ZEND_FUNCTION(get_called_class);
46 static ZEND_FUNCTION(get_parent_class);
47 static ZEND_FUNCTION(method_exists);
48 static ZEND_FUNCTION(property_exists);
49 static ZEND_FUNCTION(class_exists);
50 static ZEND_FUNCTION(interface_exists);
51 static ZEND_FUNCTION(trait_exists);
52 static ZEND_FUNCTION(function_exists);
53 static ZEND_FUNCTION(class_alias);
54 static ZEND_FUNCTION(get_included_files);
55 static ZEND_FUNCTION(is_subclass_of);
56 static ZEND_FUNCTION(is_a);
57 static ZEND_FUNCTION(get_class_vars);
58 static ZEND_FUNCTION(get_object_vars);
59 static ZEND_FUNCTION(get_mangled_object_vars);
60 static ZEND_FUNCTION(get_class_methods);
61 static ZEND_FUNCTION(trigger_error);
62 static ZEND_FUNCTION(set_error_handler);
63 static ZEND_FUNCTION(restore_error_handler);
64 static ZEND_FUNCTION(set_exception_handler);
65 static ZEND_FUNCTION(restore_exception_handler);
66 static ZEND_FUNCTION(get_declared_classes);
67 static ZEND_FUNCTION(get_declared_traits);
68 static ZEND_FUNCTION(get_declared_interfaces);
69 static ZEND_FUNCTION(get_defined_functions);
70 static ZEND_FUNCTION(get_defined_vars);
71 static ZEND_FUNCTION(create_function);
72 static ZEND_FUNCTION(get_resource_type);
73 static ZEND_FUNCTION(get_resources);
74 static ZEND_FUNCTION(get_loaded_extensions);
75 static ZEND_FUNCTION(extension_loaded);
76 static ZEND_FUNCTION(get_extension_funcs);
77 static ZEND_FUNCTION(get_defined_constants);
78 static ZEND_FUNCTION(debug_backtrace);
79 static ZEND_FUNCTION(debug_print_backtrace);
80 #if ZEND_DEBUG && defined(ZTS)
81 static ZEND_FUNCTION(zend_thread_id);
82 #endif
83 static ZEND_FUNCTION(gc_mem_caches);
84 static ZEND_FUNCTION(gc_collect_cycles);
85 static ZEND_FUNCTION(gc_enabled);
86 static ZEND_FUNCTION(gc_enable);
87 static ZEND_FUNCTION(gc_disable);
88 static ZEND_FUNCTION(gc_status);
89
90 /* {{{ arginfo */
91 ZEND_BEGIN_ARG_INFO(arginfo_zend__void, 0)
92 ZEND_END_ARG_INFO()
93
94 ZEND_BEGIN_ARG_INFO_EX(arginfo_func_get_arg, 0, 0, 1)
95 ZEND_ARG_INFO(0, arg_num)
96 ZEND_END_ARG_INFO()
97
98 ZEND_BEGIN_ARG_INFO_EX(arginfo_strlen, 0, 0, 1)
99 ZEND_ARG_INFO(0, str)
100 ZEND_END_ARG_INFO()
101
102 ZEND_BEGIN_ARG_INFO_EX(arginfo_strcmp, 0, 0, 2)
103 ZEND_ARG_INFO(0, str1)
104 ZEND_ARG_INFO(0, str2)
105 ZEND_END_ARG_INFO()
106
107 ZEND_BEGIN_ARG_INFO_EX(arginfo_strncmp, 0, 0, 3)
108 ZEND_ARG_INFO(0, str1)
109 ZEND_ARG_INFO(0, str2)
110 ZEND_ARG_INFO(0, len)
111 ZEND_END_ARG_INFO()
112
113 ZEND_BEGIN_ARG_INFO_EX(arginfo_each, 0, 0, 1)
114 ZEND_ARG_INFO(1, arr)
115 ZEND_END_ARG_INFO()
116
117 ZEND_BEGIN_ARG_INFO_EX(arginfo_error_reporting, 0, 0, 0)
118 ZEND_ARG_INFO(0, new_error_level)
119 ZEND_END_ARG_INFO()
120
121 ZEND_BEGIN_ARG_INFO_EX(arginfo_define, 0, 0, 2)
122 ZEND_ARG_INFO(0, constant_name)
123 ZEND_ARG_INFO(0, value)
124 ZEND_ARG_INFO(0, case_insensitive)
125 ZEND_END_ARG_INFO()
126
127 ZEND_BEGIN_ARG_INFO_EX(arginfo_defined, 0, 0, 1)
128 ZEND_ARG_INFO(0, constant_name)
129 ZEND_END_ARG_INFO()
130
131 ZEND_BEGIN_ARG_INFO_EX(arginfo_get_class, 0, 0, 0)
132 ZEND_ARG_INFO(0, object)
133 ZEND_END_ARG_INFO()
134
135 ZEND_BEGIN_ARG_INFO_EX(arginfo_is_subclass_of, 0, 0, 2)
136 ZEND_ARG_INFO(0, object)
137 ZEND_ARG_INFO(0, class_name)
138 ZEND_ARG_INFO(0, allow_string)
139 ZEND_END_ARG_INFO()
140
141 ZEND_BEGIN_ARG_INFO_EX(arginfo_get_class_vars, 0, 0, 1)
142 ZEND_ARG_INFO(0, class_name)
143 ZEND_END_ARG_INFO()
144
145 ZEND_BEGIN_ARG_INFO_EX(arginfo_get_object_vars, 0, 0, 1)
146 ZEND_ARG_INFO(0, obj)
147 ZEND_END_ARG_INFO()
148
149 ZEND_BEGIN_ARG_INFO_EX(arginfo_get_mangled_object_vars, 0, 0, 1)
150 ZEND_ARG_INFO(0, obj)
151 ZEND_END_ARG_INFO()
152
153 ZEND_BEGIN_ARG_INFO_EX(arginfo_get_class_methods, 0, 0, 1)
154 ZEND_ARG_INFO(0, class)
155 ZEND_END_ARG_INFO()
156
157 ZEND_BEGIN_ARG_INFO_EX(arginfo_method_exists, 0, 0, 2)
158 ZEND_ARG_INFO(0, object)
159 ZEND_ARG_INFO(0, method)
160 ZEND_END_ARG_INFO()
161
162 ZEND_BEGIN_ARG_INFO_EX(arginfo_property_exists, 0, 0, 2)
163 ZEND_ARG_INFO(0, object_or_class)
164 ZEND_ARG_INFO(0, property_name)
165 ZEND_END_ARG_INFO()
166
167 ZEND_BEGIN_ARG_INFO_EX(arginfo_class_exists, 0, 0, 1)
168 ZEND_ARG_INFO(0, classname)
169 ZEND_ARG_INFO(0, autoload)
170 ZEND_END_ARG_INFO()
171
172 ZEND_BEGIN_ARG_INFO_EX(arginfo_trait_exists, 0, 0, 1)
173 ZEND_ARG_INFO(0, traitname)
174 ZEND_ARG_INFO(0, autoload)
175 ZEND_END_ARG_INFO()
176
177 ZEND_BEGIN_ARG_INFO_EX(arginfo_function_exists, 0, 0, 1)
178 ZEND_ARG_INFO(0, function_name)
179 ZEND_END_ARG_INFO()
180
181 ZEND_BEGIN_ARG_INFO_EX(arginfo_class_alias, 0, 0, 2)
182 ZEND_ARG_INFO(0, user_class_name)
183 ZEND_ARG_INFO(0, alias_name)
184 ZEND_ARG_INFO(0, autoload)
185 ZEND_END_ARG_INFO()
186
187 ZEND_BEGIN_ARG_INFO_EX(arginfo_trigger_error, 0, 0, 1)
188 ZEND_ARG_INFO(0, message)
189 ZEND_ARG_INFO(0, error_type)
190 ZEND_END_ARG_INFO()
191
192 ZEND_BEGIN_ARG_INFO_EX(arginfo_set_error_handler, 0, 0, 1)
193 ZEND_ARG_INFO(0, error_handler)
194 ZEND_ARG_INFO(0, error_types)
195 ZEND_END_ARG_INFO()
196
197 ZEND_BEGIN_ARG_INFO_EX(arginfo_set_exception_handler, 0, 0, 1)
198 ZEND_ARG_INFO(0, exception_handler)
199 ZEND_END_ARG_INFO()
200
201 ZEND_BEGIN_ARG_INFO_EX(arginfo_get_defined_functions, 0, 0, 0)
202 ZEND_ARG_INFO(0, exclude_disabled)
203 ZEND_END_ARG_INFO()
204
205 ZEND_BEGIN_ARG_INFO_EX(arginfo_create_function, 0, 0, 2)
206 ZEND_ARG_INFO(0, args)
207 ZEND_ARG_INFO(0, code)
208 ZEND_END_ARG_INFO()
209
210 ZEND_BEGIN_ARG_INFO_EX(arginfo_get_resource_type, 0, 0, 1)
211 ZEND_ARG_INFO(0, res)
212 ZEND_END_ARG_INFO()
213
214 ZEND_BEGIN_ARG_INFO_EX(arginfo_get_resources, 0, 0, 0)
215 ZEND_ARG_INFO(0, type)
216 ZEND_END_ARG_INFO()
217
218 ZEND_BEGIN_ARG_INFO_EX(arginfo_get_loaded_extensions, 0, 0, 0)
219 ZEND_ARG_INFO(0, zend_extensions)
220 ZEND_END_ARG_INFO()
221
222 ZEND_BEGIN_ARG_INFO_EX(arginfo_get_defined_constants, 0, 0, 0)
223 ZEND_ARG_INFO(0, categorize)
224 ZEND_END_ARG_INFO()
225
226 ZEND_BEGIN_ARG_INFO_EX(arginfo_debug_backtrace, 0, 0, 0)
227 ZEND_ARG_INFO(0, options)
228 ZEND_ARG_INFO(0, limit)
229 ZEND_END_ARG_INFO()
230
231 ZEND_BEGIN_ARG_INFO_EX(arginfo_debug_print_backtrace, 0, 0, 0)
232 ZEND_ARG_INFO(0, options)
233 ZEND_ARG_INFO(0, limit)
234 ZEND_END_ARG_INFO()
235
236 ZEND_BEGIN_ARG_INFO_EX(arginfo_extension_loaded, 0, 0, 1)
237 ZEND_ARG_INFO(0, extension_name)
238 ZEND_END_ARG_INFO()
239
240 /* }}} */
241
242 static const zend_function_entry builtin_functions[] = { /* {{{ */
243 ZEND_FE(zend_version, arginfo_zend__void)
244 ZEND_FE(func_num_args, arginfo_zend__void)
245 ZEND_FE(func_get_arg, arginfo_func_get_arg)
246 ZEND_FE(func_get_args, arginfo_zend__void)
247 ZEND_FE(strlen, arginfo_strlen)
248 ZEND_FE(strcmp, arginfo_strcmp)
249 ZEND_FE(strncmp, arginfo_strncmp)
250 ZEND_FE(strcasecmp, arginfo_strcmp)
251 ZEND_FE(strncasecmp, arginfo_strncmp)
252 ZEND_FE(each, arginfo_each)
253 ZEND_FE(error_reporting, arginfo_error_reporting)
254 ZEND_FE(define, arginfo_define)
255 ZEND_FE(defined, arginfo_defined)
256 ZEND_FE(get_class, arginfo_get_class)
257 ZEND_FE(get_called_class, arginfo_zend__void)
258 ZEND_FE(get_parent_class, arginfo_get_class)
259 ZEND_FE(method_exists, arginfo_method_exists)
260 ZEND_FE(property_exists, arginfo_property_exists)
261 ZEND_FE(class_exists, arginfo_class_exists)
262 ZEND_FE(interface_exists, arginfo_class_exists)
263 ZEND_FE(trait_exists, arginfo_trait_exists)
264 ZEND_FE(function_exists, arginfo_function_exists)
265 ZEND_FE(class_alias, arginfo_class_alias)
266 ZEND_FE(get_included_files, arginfo_zend__void)
267 ZEND_FALIAS(get_required_files, get_included_files, arginfo_zend__void)
268 ZEND_FE(is_subclass_of, arginfo_is_subclass_of)
269 ZEND_FE(is_a, arginfo_is_subclass_of)
270 ZEND_FE(get_class_vars, arginfo_get_class_vars)
271 ZEND_FE(get_object_vars, arginfo_get_object_vars)
272 ZEND_FE(get_mangled_object_vars, arginfo_get_mangled_object_vars)
273 ZEND_FE(get_class_methods, arginfo_get_class_methods)
274 ZEND_FE(trigger_error, arginfo_trigger_error)
275 ZEND_FALIAS(user_error, trigger_error, arginfo_trigger_error)
276 ZEND_FE(set_error_handler, arginfo_set_error_handler)
277 ZEND_FE(restore_error_handler, arginfo_zend__void)
278 ZEND_FE(set_exception_handler, arginfo_set_exception_handler)
279 ZEND_FE(restore_exception_handler, arginfo_zend__void)
280 ZEND_FE(get_declared_classes, arginfo_zend__void)
281 ZEND_FE(get_declared_traits, arginfo_zend__void)
282 ZEND_FE(get_declared_interfaces, arginfo_zend__void)
283 ZEND_FE(get_defined_functions, arginfo_get_defined_functions)
284 ZEND_FE(get_defined_vars, arginfo_zend__void)
285 ZEND_DEP_FE(create_function, arginfo_create_function)
286 ZEND_FE(get_resource_type, arginfo_get_resource_type)
287 ZEND_FE(get_resources, arginfo_get_resources)
288 ZEND_FE(get_loaded_extensions, arginfo_get_loaded_extensions)
289 ZEND_FE(extension_loaded, arginfo_extension_loaded)
290 ZEND_FE(get_extension_funcs, arginfo_extension_loaded)
291 ZEND_FE(get_defined_constants, arginfo_get_defined_constants)
292 ZEND_FE(debug_backtrace, arginfo_debug_backtrace)
293 ZEND_FE(debug_print_backtrace, arginfo_debug_print_backtrace)
294 #if ZEND_DEBUG && defined(ZTS)
295 ZEND_FE(zend_thread_id, NULL)
296 #endif
297 ZEND_FE(gc_mem_caches, arginfo_zend__void)
298 ZEND_FE(gc_collect_cycles, arginfo_zend__void)
299 ZEND_FE(gc_enabled, arginfo_zend__void)
300 ZEND_FE(gc_enable, arginfo_zend__void)
301 ZEND_FE(gc_disable, arginfo_zend__void)
302 ZEND_FE(gc_status, arginfo_zend__void)
303 ZEND_FE_END
304 };
305 /* }}} */
306
ZEND_MINIT_FUNCTION(core)307 ZEND_MINIT_FUNCTION(core) { /* {{{ */
308 zend_class_entry class_entry;
309
310 INIT_CLASS_ENTRY(class_entry, "stdClass", NULL);
311 zend_standard_class_def = zend_register_internal_class(&class_entry);
312
313 zend_register_default_classes();
314
315 return SUCCESS;
316 }
317 /* }}} */
318
319 zend_module_entry zend_builtin_module = { /* {{{ */
320 STANDARD_MODULE_HEADER,
321 "Core",
322 builtin_functions,
323 ZEND_MINIT(core),
324 NULL,
325 NULL,
326 NULL,
327 NULL,
328 ZEND_VERSION,
329 STANDARD_MODULE_PROPERTIES
330 };
331 /* }}} */
332
zend_startup_builtin_functions(void)333 int zend_startup_builtin_functions(void) /* {{{ */
334 {
335 zend_builtin_module.module_number = 0;
336 zend_builtin_module.type = MODULE_PERSISTENT;
337 return (EG(current_module) = zend_register_module_ex(&zend_builtin_module)) == NULL ? FAILURE : SUCCESS;
338 }
339 /* }}} */
340
341 /* {{{ proto string zend_version(void)
342 Get the version of the Zend Engine */
ZEND_FUNCTION(zend_version)343 ZEND_FUNCTION(zend_version)
344 {
345 if (zend_parse_parameters_none() == FAILURE) {
346 return;
347 }
348
349 RETURN_STRINGL(ZEND_VERSION, sizeof(ZEND_VERSION)-1);
350 }
351 /* }}} */
352
353 /* {{{ proto int gc_mem_caches(void)
354 Reclaims memory used by MM caches.
355 Returns number of freed bytes */
ZEND_FUNCTION(gc_mem_caches)356 ZEND_FUNCTION(gc_mem_caches)
357 {
358 if (zend_parse_parameters_none() == FAILURE) {
359 return;
360 }
361
362 RETURN_LONG(zend_mm_gc(zend_mm_get_heap()));
363 }
364 /* }}} */
365
366 /* {{{ proto int gc_collect_cycles(void)
367 Forces collection of any existing garbage cycles.
368 Returns number of freed zvals */
ZEND_FUNCTION(gc_collect_cycles)369 ZEND_FUNCTION(gc_collect_cycles)
370 {
371 if (zend_parse_parameters_none() == FAILURE) {
372 return;
373 }
374
375 RETURN_LONG(gc_collect_cycles());
376 }
377 /* }}} */
378
379 /* {{{ proto void gc_enabled(void)
380 Returns status of the circular reference collector */
ZEND_FUNCTION(gc_enabled)381 ZEND_FUNCTION(gc_enabled)
382 {
383 if (zend_parse_parameters_none() == FAILURE) {
384 return;
385 }
386
387 RETURN_BOOL(gc_enabled());
388 }
389 /* }}} */
390
391 /* {{{ proto void gc_enable(void)
392 Activates the circular reference collector */
ZEND_FUNCTION(gc_enable)393 ZEND_FUNCTION(gc_enable)
394 {
395 zend_string *key;
396
397 if (zend_parse_parameters_none() == FAILURE) {
398 return;
399 }
400
401 key = zend_string_init("zend.enable_gc", sizeof("zend.enable_gc")-1, 0);
402 zend_alter_ini_entry_chars(key, "1", sizeof("1")-1, ZEND_INI_USER, ZEND_INI_STAGE_RUNTIME);
403 zend_string_release_ex(key, 0);
404 }
405 /* }}} */
406
407 /* {{{ proto void gc_disable(void)
408 Deactivates the circular reference collector */
ZEND_FUNCTION(gc_disable)409 ZEND_FUNCTION(gc_disable)
410 {
411 zend_string *key;
412
413 if (zend_parse_parameters_none() == FAILURE) {
414 return;
415 }
416
417 key = zend_string_init("zend.enable_gc", sizeof("zend.enable_gc")-1, 0);
418 zend_alter_ini_entry_chars(key, "0", sizeof("0")-1, ZEND_INI_USER, ZEND_INI_STAGE_RUNTIME);
419 zend_string_release_ex(key, 0);
420 }
421 /* }}} */
422
423 /* {{{ proto array gc_status(void)
424 Returns current GC statistics */
ZEND_FUNCTION(gc_status)425 ZEND_FUNCTION(gc_status)
426 {
427 zend_gc_status status;
428
429 if (zend_parse_parameters_none() == FAILURE) {
430 return;
431 }
432
433 zend_gc_get_status(&status);
434
435 array_init_size(return_value, 3);
436
437 add_assoc_long_ex(return_value, "runs", sizeof("runs")-1, (long)status.runs);
438 add_assoc_long_ex(return_value, "collected", sizeof("collected")-1, (long)status.collected);
439 add_assoc_long_ex(return_value, "threshold", sizeof("threshold")-1, (long)status.threshold);
440 add_assoc_long_ex(return_value, "roots", sizeof("roots")-1, (long)status.num_roots);
441 }
442 /* }}} */
443
444 /* {{{ proto int func_num_args(void)
445 Get the number of arguments that were passed to the function */
ZEND_FUNCTION(func_num_args)446 ZEND_FUNCTION(func_num_args)
447 {
448 zend_execute_data *ex = EX(prev_execute_data);
449
450 if (zend_parse_parameters_none() == FAILURE) {
451 return;
452 }
453
454 if (ZEND_CALL_INFO(ex) & ZEND_CALL_CODE) {
455 zend_error(E_WARNING, "func_num_args(): Called from the global scope - no function context");
456 RETURN_LONG(-1);
457 }
458
459 if (zend_forbid_dynamic_call("func_num_args()") == FAILURE) {
460 RETURN_LONG(-1);
461 }
462
463 RETURN_LONG(ZEND_CALL_NUM_ARGS(ex));
464 }
465 /* }}} */
466
467 /* {{{ proto mixed func_get_arg(int arg_num)
468 Get the $arg_num'th argument that was passed to the function */
ZEND_FUNCTION(func_get_arg)469 ZEND_FUNCTION(func_get_arg)
470 {
471 uint32_t arg_count, first_extra_arg;
472 zval *arg;
473 zend_long requested_offset;
474 zend_execute_data *ex;
475
476 if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &requested_offset) == FAILURE) {
477 return;
478 }
479
480 if (requested_offset < 0) {
481 zend_error(E_WARNING, "func_get_arg(): The argument number should be >= 0");
482 RETURN_FALSE;
483 }
484
485 ex = EX(prev_execute_data);
486 if (ZEND_CALL_INFO(ex) & ZEND_CALL_CODE) {
487 zend_error(E_WARNING, "func_get_arg(): Called from the global scope - no function context");
488 RETURN_FALSE;
489 }
490
491 if (zend_forbid_dynamic_call("func_get_arg()") == FAILURE) {
492 RETURN_FALSE;
493 }
494
495 arg_count = ZEND_CALL_NUM_ARGS(ex);
496
497 if ((zend_ulong)requested_offset >= arg_count) {
498 zend_error(E_WARNING, "func_get_arg(): Argument " ZEND_LONG_FMT " not passed to function", requested_offset);
499 RETURN_FALSE;
500 }
501
502 first_extra_arg = ex->func->op_array.num_args;
503 if ((zend_ulong)requested_offset >= first_extra_arg && (ZEND_CALL_NUM_ARGS(ex) > first_extra_arg)) {
504 arg = ZEND_CALL_VAR_NUM(ex, ex->func->op_array.last_var + ex->func->op_array.T) + (requested_offset - first_extra_arg);
505 } else {
506 arg = ZEND_CALL_ARG(ex, requested_offset + 1);
507 }
508 if (EXPECTED(!Z_ISUNDEF_P(arg))) {
509 ZVAL_COPY_DEREF(return_value, arg);
510 }
511 }
512 /* }}} */
513
514 /* {{{ proto array func_get_args()
515 Get an array of the arguments that were passed to the function */
ZEND_FUNCTION(func_get_args)516 ZEND_FUNCTION(func_get_args)
517 {
518 zval *p, *q;
519 uint32_t arg_count, first_extra_arg;
520 uint32_t i;
521 zend_execute_data *ex = EX(prev_execute_data);
522
523 if (ZEND_CALL_INFO(ex) & ZEND_CALL_CODE) {
524 zend_error(E_WARNING, "func_get_args(): Called from the global scope - no function context");
525 RETURN_FALSE;
526 }
527
528 if (zend_forbid_dynamic_call("func_get_args()") == FAILURE) {
529 RETURN_FALSE;
530 }
531
532 arg_count = ZEND_CALL_NUM_ARGS(ex);
533
534 if (arg_count) {
535 array_init_size(return_value, arg_count);
536 first_extra_arg = ex->func->op_array.num_args;
537 zend_hash_real_init_packed(Z_ARRVAL_P(return_value));
538 ZEND_HASH_FILL_PACKED(Z_ARRVAL_P(return_value)) {
539 i = 0;
540 p = ZEND_CALL_ARG(ex, 1);
541 if (arg_count > first_extra_arg) {
542 while (i < first_extra_arg) {
543 q = p;
544 if (EXPECTED(Z_TYPE_INFO_P(q) != IS_UNDEF)) {
545 ZVAL_DEREF(q);
546 if (Z_OPT_REFCOUNTED_P(q)) {
547 Z_ADDREF_P(q);
548 }
549 ZEND_HASH_FILL_SET(q);
550 } else {
551 ZEND_HASH_FILL_SET_NULL();
552 }
553 ZEND_HASH_FILL_NEXT();
554 p++;
555 i++;
556 }
557 p = ZEND_CALL_VAR_NUM(ex, ex->func->op_array.last_var + ex->func->op_array.T);
558 }
559 while (i < arg_count) {
560 q = p;
561 if (EXPECTED(Z_TYPE_INFO_P(q) != IS_UNDEF)) {
562 ZVAL_DEREF(q);
563 if (Z_OPT_REFCOUNTED_P(q)) {
564 Z_ADDREF_P(q);
565 }
566 ZEND_HASH_FILL_SET(q);
567 } else {
568 ZEND_HASH_FILL_SET_NULL();
569 }
570 ZEND_HASH_FILL_NEXT();
571 p++;
572 i++;
573 }
574 } ZEND_HASH_FILL_END();
575 Z_ARRVAL_P(return_value)->nNumOfElements = arg_count;
576 } else {
577 RETURN_EMPTY_ARRAY();
578 }
579 }
580 /* }}} */
581
582 /* {{{ proto int strlen(string str)
583 Get string length
584 Warning: This function is special-cased by zend_compile.c and so is usually bypassed */
ZEND_FUNCTION(strlen)585 ZEND_FUNCTION(strlen)
586 {
587 zend_string *s;
588
589 ZEND_PARSE_PARAMETERS_START(1, 1)
590 Z_PARAM_STR(s)
591 ZEND_PARSE_PARAMETERS_END();
592
593 RETVAL_LONG(ZSTR_LEN(s));
594 }
595 /* }}} */
596
597 /* {{{ proto int strcmp(string str1, string str2)
598 Binary safe string comparison */
ZEND_FUNCTION(strcmp)599 ZEND_FUNCTION(strcmp)
600 {
601 zend_string *s1, *s2;
602
603 ZEND_PARSE_PARAMETERS_START(2, 2)
604 Z_PARAM_STR(s1)
605 Z_PARAM_STR(s2)
606 ZEND_PARSE_PARAMETERS_END();
607
608 RETURN_LONG(zend_binary_strcmp(ZSTR_VAL(s1), ZSTR_LEN(s1), ZSTR_VAL(s2), ZSTR_LEN(s2)));
609 }
610 /* }}} */
611
612 /* {{{ proto int strncmp(string str1, string str2, int len)
613 Binary safe string comparison */
ZEND_FUNCTION(strncmp)614 ZEND_FUNCTION(strncmp)
615 {
616 zend_string *s1, *s2;
617 zend_long len;
618
619 ZEND_PARSE_PARAMETERS_START(3, 3)
620 Z_PARAM_STR(s1)
621 Z_PARAM_STR(s2)
622 Z_PARAM_LONG(len)
623 ZEND_PARSE_PARAMETERS_END();
624
625 if (len < 0) {
626 zend_error(E_WARNING, "Length must be greater than or equal to 0");
627 RETURN_FALSE;
628 }
629
630 RETURN_LONG(zend_binary_strncmp(ZSTR_VAL(s1), ZSTR_LEN(s1), ZSTR_VAL(s2), ZSTR_LEN(s2), len));
631 }
632 /* }}} */
633
634 /* {{{ proto int strcasecmp(string str1, string str2)
635 Binary safe case-insensitive string comparison */
ZEND_FUNCTION(strcasecmp)636 ZEND_FUNCTION(strcasecmp)
637 {
638 zend_string *s1, *s2;
639
640 ZEND_PARSE_PARAMETERS_START(2, 2)
641 Z_PARAM_STR(s1)
642 Z_PARAM_STR(s2)
643 ZEND_PARSE_PARAMETERS_END();
644
645 RETURN_LONG(zend_binary_strcasecmp(ZSTR_VAL(s1), ZSTR_LEN(s1), ZSTR_VAL(s2), ZSTR_LEN(s2)));
646 }
647 /* }}} */
648
649 /* {{{ proto int strncasecmp(string str1, string str2, int len)
650 Binary safe string comparison */
ZEND_FUNCTION(strncasecmp)651 ZEND_FUNCTION(strncasecmp)
652 {
653 zend_string *s1, *s2;
654 zend_long len;
655
656 ZEND_PARSE_PARAMETERS_START(3, 3)
657 Z_PARAM_STR(s1)
658 Z_PARAM_STR(s2)
659 Z_PARAM_LONG(len)
660 ZEND_PARSE_PARAMETERS_END();
661
662 if (len < 0) {
663 zend_error(E_WARNING, "Length must be greater than or equal to 0");
664 RETURN_FALSE;
665 }
666
667 RETURN_LONG(zend_binary_strncasecmp(ZSTR_VAL(s1), ZSTR_LEN(s1), ZSTR_VAL(s2), ZSTR_LEN(s2), len));
668 }
669 /* }}} */
670
671 /* {{{ proto mixed each(array &arr)
672 Return the currently pointed key..value pair in the passed array, and advance the pointer to the next element, or false if there is no element at this place */
ZEND_FUNCTION(each)673 ZEND_FUNCTION(each)
674 {
675 zval *array, *entry, tmp;
676 zend_ulong num_key;
677 HashTable *target_hash;
678 zend_string *key;
679
680 if (zend_parse_parameters(ZEND_NUM_ARGS(), "z/", &array) == FAILURE) {
681 return;
682 }
683
684 if (!EG(each_deprecation_thrown)) {
685 zend_error(E_DEPRECATED, "The each() function is deprecated. This message will be suppressed on further calls");
686 EG(each_deprecation_thrown) = 1;
687 }
688
689 target_hash = HASH_OF(array);
690 if (!target_hash) {
691 zend_error(E_WARNING,"Variable passed to each() is not an array or object");
692 return;
693 }
694 while (1) {
695 entry = zend_hash_get_current_data(target_hash);
696 if (!entry) {
697 RETURN_FALSE;
698 } else if (Z_TYPE_P(entry) == IS_INDIRECT) {
699 entry = Z_INDIRECT_P(entry);
700 if (Z_TYPE_P(entry) == IS_UNDEF) {
701 zend_hash_move_forward(target_hash);
702 continue;
703 }
704 }
705 break;
706 }
707 array_init_size(return_value, 4);
708 zend_hash_real_init_mixed(Z_ARRVAL_P(return_value));
709
710 /* add value elements */
711 ZVAL_DEREF(entry);
712 if (Z_REFCOUNTED_P(entry)) {
713 GC_ADDREF_EX(Z_COUNTED_P(entry), 2);
714 }
715 zend_hash_index_add_new(Z_ARRVAL_P(return_value), 1, entry);
716 zend_hash_add_new(Z_ARRVAL_P(return_value), ZSTR_KNOWN(ZEND_STR_VALUE), entry);
717
718 /* add the key elements */
719 if (zend_hash_get_current_key(target_hash, &key, &num_key) == HASH_KEY_IS_STRING) {
720 ZVAL_STR_COPY(&tmp, key);
721 Z_TRY_ADDREF(tmp);
722 } else {
723 ZVAL_LONG(&tmp, num_key);
724 }
725 zend_hash_index_add_new(Z_ARRVAL_P(return_value), 0, &tmp);
726 zend_hash_add_new(Z_ARRVAL_P(return_value), ZSTR_KNOWN(ZEND_STR_KEY), &tmp);
727 zend_hash_move_forward(target_hash);
728 }
729 /* }}} */
730
731 /* {{{ proto int error_reporting([int new_error_level])
732 Return the current error_reporting level, and if an argument was passed - change to the new level */
ZEND_FUNCTION(error_reporting)733 ZEND_FUNCTION(error_reporting)
734 {
735 zval *err = NULL;
736 int old_error_reporting;
737
738 ZEND_PARSE_PARAMETERS_START(0, 1)
739 Z_PARAM_OPTIONAL
740 Z_PARAM_ZVAL(err)
741 ZEND_PARSE_PARAMETERS_END();
742
743 old_error_reporting = EG(error_reporting);
744 if (ZEND_NUM_ARGS() != 0) {
745 zend_string *new_val = zval_try_get_string(err);
746
747 if (UNEXPECTED(!new_val)) {
748 return;
749 }
750
751 do {
752 zend_ini_entry *p = EG(error_reporting_ini_entry);
753
754 if (!p) {
755 zval *zv = zend_hash_find_ex(EG(ini_directives), ZSTR_KNOWN(ZEND_STR_ERROR_REPORTING), 1);
756 if (zv) {
757 p = EG(error_reporting_ini_entry) = (zend_ini_entry*)Z_PTR_P(zv);
758 } else {
759 break;
760 }
761 }
762 if (!p->modified) {
763 if (!EG(modified_ini_directives)) {
764 ALLOC_HASHTABLE(EG(modified_ini_directives));
765 zend_hash_init(EG(modified_ini_directives), 8, NULL, NULL, 0);
766 }
767 if (EXPECTED(zend_hash_add_ptr(EG(modified_ini_directives), ZSTR_KNOWN(ZEND_STR_ERROR_REPORTING), p) != NULL)) {
768 p->orig_value = p->value;
769 p->orig_modifiable = p->modifiable;
770 p->modified = 1;
771 }
772 } else if (p->orig_value != p->value) {
773 zend_string_release_ex(p->value, 0);
774 }
775
776 p->value = new_val;
777 if (Z_TYPE_P(err) == IS_LONG) {
778 EG(error_reporting) = Z_LVAL_P(err);
779 } else {
780 EG(error_reporting) = atoi(ZSTR_VAL(p->value));
781 }
782 } while (0);
783 }
784
785 RETVAL_LONG(old_error_reporting);
786 }
787 /* }}} */
788
validate_constant_array(HashTable * ht)789 static int validate_constant_array(HashTable *ht) /* {{{ */
790 {
791 int ret = 1;
792 zval *val;
793
794 GC_PROTECT_RECURSION(ht);
795 ZEND_HASH_FOREACH_VAL_IND(ht, val) {
796 ZVAL_DEREF(val);
797 if (Z_REFCOUNTED_P(val)) {
798 if (Z_TYPE_P(val) == IS_ARRAY) {
799 if (Z_REFCOUNTED_P(val)) {
800 if (Z_IS_RECURSIVE_P(val)) {
801 zend_error(E_WARNING, "Constants cannot be recursive arrays");
802 ret = 0;
803 break;
804 } else if (!validate_constant_array(Z_ARRVAL_P(val))) {
805 ret = 0;
806 break;
807 }
808 }
809 } else if (Z_TYPE_P(val) != IS_STRING && Z_TYPE_P(val) != IS_RESOURCE) {
810 zend_error(E_WARNING, "Constants may only evaluate to scalar values, arrays or resources");
811 ret = 0;
812 break;
813 }
814 }
815 } ZEND_HASH_FOREACH_END();
816 GC_UNPROTECT_RECURSION(ht);
817 return ret;
818 }
819 /* }}} */
820
copy_constant_array(zval * dst,zval * src)821 static void copy_constant_array(zval *dst, zval *src) /* {{{ */
822 {
823 zend_string *key;
824 zend_ulong idx;
825 zval *new_val, *val;
826
827 array_init_size(dst, zend_hash_num_elements(Z_ARRVAL_P(src)));
828 ZEND_HASH_FOREACH_KEY_VAL_IND(Z_ARRVAL_P(src), idx, key, val) {
829 /* constant arrays can't contain references */
830 ZVAL_DEREF(val);
831 if (key) {
832 new_val = zend_hash_add_new(Z_ARRVAL_P(dst), key, val);
833 } else {
834 new_val = zend_hash_index_add_new(Z_ARRVAL_P(dst), idx, val);
835 }
836 if (Z_TYPE_P(val) == IS_ARRAY) {
837 if (Z_REFCOUNTED_P(val)) {
838 copy_constant_array(new_val, val);
839 }
840 } else {
841 Z_TRY_ADDREF_P(val);
842 }
843 } ZEND_HASH_FOREACH_END();
844 }
845 /* }}} */
846
847 /* {{{ proto bool define(string constant_name, mixed value[, bool case_insensitive])
848 Define a new constant */
ZEND_FUNCTION(define)849 ZEND_FUNCTION(define)
850 {
851 zend_string *name;
852 zval *val, val_free;
853 zend_bool non_cs = 0;
854 int case_sensitive = CONST_CS;
855 zend_constant c;
856
857 ZEND_PARSE_PARAMETERS_START(2, 3)
858 Z_PARAM_STR(name)
859 Z_PARAM_ZVAL(val)
860 Z_PARAM_OPTIONAL
861 Z_PARAM_BOOL(non_cs)
862 ZEND_PARSE_PARAMETERS_END();
863
864 if (non_cs) {
865 case_sensitive = 0;
866 }
867
868 if (zend_memnstr(ZSTR_VAL(name), "::", sizeof("::") - 1, ZSTR_VAL(name) + ZSTR_LEN(name))) {
869 zend_error(E_WARNING, "Class constants cannot be defined or redefined");
870 RETURN_FALSE;
871 }
872
873 ZVAL_UNDEF(&val_free);
874
875 repeat:
876 switch (Z_TYPE_P(val)) {
877 case IS_LONG:
878 case IS_DOUBLE:
879 case IS_STRING:
880 case IS_FALSE:
881 case IS_TRUE:
882 case IS_NULL:
883 case IS_RESOURCE:
884 break;
885 case IS_ARRAY:
886 if (Z_REFCOUNTED_P(val)) {
887 if (!validate_constant_array(Z_ARRVAL_P(val))) {
888 RETURN_FALSE;
889 } else {
890 copy_constant_array(&c.value, val);
891 goto register_constant;
892 }
893 }
894 break;
895 case IS_OBJECT:
896 if (Z_TYPE(val_free) == IS_UNDEF) {
897 if (Z_OBJ_HT_P(val)->get) {
898 val = Z_OBJ_HT_P(val)->get(val, &val_free);
899 goto repeat;
900 } else if (Z_OBJ_HT_P(val)->cast_object) {
901 if (Z_OBJ_HT_P(val)->cast_object(val, &val_free, IS_STRING) == SUCCESS) {
902 val = &val_free;
903 break;
904 }
905 }
906 }
907 /* no break */
908 default:
909 zend_error(E_WARNING, "Constants may only evaluate to scalar values, arrays or resources");
910 zval_ptr_dtor(&val_free);
911 RETURN_FALSE;
912 }
913
914 ZVAL_COPY(&c.value, val);
915 zval_ptr_dtor(&val_free);
916
917 register_constant:
918 if (non_cs) {
919 zend_error(E_DEPRECATED,
920 "define(): Declaration of case-insensitive constants is deprecated");
921 }
922
923 /* non persistent */
924 ZEND_CONSTANT_SET_FLAGS(&c, case_sensitive, PHP_USER_CONSTANT);
925 c.name = zend_string_copy(name);
926 if (zend_register_constant(&c) == SUCCESS) {
927 RETURN_TRUE;
928 } else {
929 RETURN_FALSE;
930 }
931 }
932 /* }}} */
933
934 /* {{{ proto bool defined(string constant_name)
935 Check whether a constant exists
936 Warning: This function is special-cased by zend_compile.c and so is usually bypassed */
ZEND_FUNCTION(defined)937 ZEND_FUNCTION(defined)
938 {
939 zend_string *name;
940
941 ZEND_PARSE_PARAMETERS_START(1, 1)
942 Z_PARAM_STR(name)
943 ZEND_PARSE_PARAMETERS_END();
944
945 if (zend_get_constant_ex(name, zend_get_executed_scope(), ZEND_FETCH_CLASS_SILENT | ZEND_GET_CONSTANT_NO_DEPRECATION_CHECK)) {
946 RETURN_TRUE;
947 } else {
948 RETURN_FALSE;
949 }
950 }
951 /* }}} */
952
953 /* {{{ proto string get_class([object object])
954 Retrieves the class name */
ZEND_FUNCTION(get_class)955 ZEND_FUNCTION(get_class)
956 {
957 zval *obj = NULL;
958
959 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|o", &obj) == FAILURE) {
960 RETURN_FALSE;
961 }
962
963 if (!obj) {
964 zend_class_entry *scope = zend_get_executed_scope();
965
966 if (scope) {
967 RETURN_STR_COPY(scope->name);
968 } else {
969 zend_error(E_WARNING, "get_class() called without object from outside a class");
970 RETURN_FALSE;
971 }
972 }
973
974 RETURN_STR_COPY(Z_OBJCE_P(obj)->name);
975 }
976 /* }}} */
977
978 /* {{{ proto string get_called_class()
979 Retrieves the "Late Static Binding" class name */
ZEND_FUNCTION(get_called_class)980 ZEND_FUNCTION(get_called_class)
981 {
982 zend_class_entry *called_scope;
983
984 if (zend_parse_parameters_none() == FAILURE) {
985 return;
986 }
987
988 called_scope = zend_get_called_scope(execute_data);
989 if (called_scope) {
990 RETURN_STR_COPY(called_scope->name);
991 } else {
992 zend_class_entry *scope = zend_get_executed_scope();
993 if (!scope) {
994 zend_error(E_WARNING, "get_called_class() called from outside a class");
995 }
996 }
997 RETURN_FALSE;
998 }
999 /* }}} */
1000
1001 /* {{{ proto mixed get_parent_class([mixed object])
1002 Retrieves the parent class name for object or class or current scope or false if not in a scope. */
ZEND_FUNCTION(get_parent_class)1003 ZEND_FUNCTION(get_parent_class)
1004 {
1005 zval *arg;
1006 zend_class_entry *ce = NULL;
1007
1008 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|z", &arg) == FAILURE) {
1009 return;
1010 }
1011
1012 if (!ZEND_NUM_ARGS()) {
1013 ce = zend_get_executed_scope();
1014 if (ce && ce->parent) {
1015 RETURN_STR_COPY(ce->parent->name);
1016 } else {
1017 RETURN_FALSE;
1018 }
1019 }
1020
1021 if (Z_TYPE_P(arg) == IS_OBJECT) {
1022 ce = Z_OBJ_P(arg)->ce;
1023 } else if (Z_TYPE_P(arg) == IS_STRING) {
1024 ce = zend_lookup_class(Z_STR_P(arg));
1025 }
1026
1027 if (ce && ce->parent) {
1028 RETURN_STR_COPY(ce->parent->name);
1029 } else {
1030 RETURN_FALSE;
1031 }
1032 }
1033 /* }}} */
1034
is_a_impl(INTERNAL_FUNCTION_PARAMETERS,zend_bool only_subclass)1035 static void is_a_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool only_subclass) /* {{{ */
1036 {
1037 zval *obj;
1038 zend_string *class_name;
1039 zend_class_entry *instance_ce;
1040 zend_class_entry *ce;
1041 zend_bool allow_string = only_subclass;
1042 zend_bool retval;
1043
1044 ZEND_PARSE_PARAMETERS_START(2, 3)
1045 Z_PARAM_ZVAL(obj)
1046 Z_PARAM_STR(class_name)
1047 Z_PARAM_OPTIONAL
1048 Z_PARAM_BOOL(allow_string)
1049 ZEND_PARSE_PARAMETERS_END();
1050 /*
1051 * allow_string - is_a default is no, is_subclass_of is yes.
1052 * if it's allowed, then the autoloader will be called if the class does not exist.
1053 * default behaviour is different, as 'is_a' used to be used to test mixed return values
1054 * and there is no easy way to deprecate this.
1055 */
1056
1057 if (allow_string && Z_TYPE_P(obj) == IS_STRING) {
1058 instance_ce = zend_lookup_class(Z_STR_P(obj));
1059 if (!instance_ce) {
1060 RETURN_FALSE;
1061 }
1062 } else if (Z_TYPE_P(obj) == IS_OBJECT) {
1063 instance_ce = Z_OBJCE_P(obj);
1064 } else {
1065 RETURN_FALSE;
1066 }
1067
1068 if (!only_subclass && EXPECTED(zend_string_equals(instance_ce->name, class_name))) {
1069 retval = 1;
1070 } else {
1071 ce = zend_lookup_class_ex(class_name, NULL, ZEND_FETCH_CLASS_NO_AUTOLOAD);
1072 if (!ce) {
1073 retval = 0;
1074 } else {
1075 if (only_subclass && instance_ce == ce) {
1076 retval = 0;
1077 } else {
1078 retval = instanceof_function(instance_ce, ce);
1079 }
1080 }
1081 }
1082
1083 RETURN_BOOL(retval);
1084 }
1085 /* }}} */
1086
1087 /* {{{ proto bool is_subclass_of(mixed object_or_string, string class_name [, bool allow_string])
1088 Returns true if the object has this class as one of its parents */
ZEND_FUNCTION(is_subclass_of)1089 ZEND_FUNCTION(is_subclass_of)
1090 {
1091 is_a_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
1092 }
1093 /* }}} */
1094
1095 /* {{{ proto bool is_a(mixed object_or_string, string class_name [, bool allow_string])
1096 Returns true if the first argument is an object and is this class or has this class as one of its parents, */
ZEND_FUNCTION(is_a)1097 ZEND_FUNCTION(is_a)
1098 {
1099 is_a_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
1100 }
1101 /* }}} */
1102
1103 /* {{{ add_class_vars */
add_class_vars(zend_class_entry * scope,zend_class_entry * ce,int statics,zval * return_value)1104 static void add_class_vars(zend_class_entry *scope, zend_class_entry *ce, int statics, zval *return_value)
1105 {
1106 zend_property_info *prop_info;
1107 zval *prop, prop_copy;
1108 zend_string *key;
1109
1110 ZEND_HASH_FOREACH_STR_KEY_PTR(&ce->properties_info, key, prop_info) {
1111 if (((prop_info->flags & ZEND_ACC_PROTECTED) &&
1112 !zend_check_protected(prop_info->ce, scope)) ||
1113 ((prop_info->flags & ZEND_ACC_PRIVATE) &&
1114 prop_info->ce != scope)) {
1115 continue;
1116 }
1117 prop = NULL;
1118 if (statics && (prop_info->flags & ZEND_ACC_STATIC) != 0) {
1119 prop = &ce->default_static_members_table[prop_info->offset];
1120 ZVAL_DEINDIRECT(prop);
1121 } else if (!statics && (prop_info->flags & ZEND_ACC_STATIC) == 0) {
1122 prop = &ce->default_properties_table[OBJ_PROP_TO_NUM(prop_info->offset)];
1123 }
1124 if (!prop) {
1125 continue;
1126 }
1127
1128 if (Z_ISUNDEF_P(prop)) {
1129 /* Return uninitialized typed properties as a null value */
1130 ZVAL_NULL(&prop_copy);
1131 } else {
1132 /* copy: enforce read only access */
1133 ZVAL_COPY_OR_DUP(&prop_copy, prop);
1134 }
1135 prop = &prop_copy;
1136
1137 /* this is necessary to make it able to work with default array
1138 * properties, returned to user */
1139 if (Z_OPT_TYPE_P(prop) == IS_CONSTANT_AST) {
1140 if (UNEXPECTED(zval_update_constant_ex(prop, NULL) != SUCCESS)) {
1141 return;
1142 }
1143 }
1144
1145 zend_hash_add_new(Z_ARRVAL_P(return_value), key, prop);
1146 } ZEND_HASH_FOREACH_END();
1147 }
1148 /* }}} */
1149
1150 /* {{{ proto array get_class_vars(string class_name)
1151 Returns an array of default properties of the class. */
ZEND_FUNCTION(get_class_vars)1152 ZEND_FUNCTION(get_class_vars)
1153 {
1154 zend_string *class_name;
1155 zend_class_entry *ce, *scope;
1156
1157 if (zend_parse_parameters(ZEND_NUM_ARGS(), "S", &class_name) == FAILURE) {
1158 return;
1159 }
1160
1161 ce = zend_lookup_class(class_name);
1162 if (!ce) {
1163 RETURN_FALSE;
1164 } else {
1165 array_init(return_value);
1166 if (UNEXPECTED(!(ce->ce_flags & ZEND_ACC_CONSTANTS_UPDATED))) {
1167 if (UNEXPECTED(zend_update_class_constants(ce) != SUCCESS)) {
1168 return;
1169 }
1170 }
1171 scope = zend_get_executed_scope();
1172 add_class_vars(scope, ce, 0, return_value);
1173 add_class_vars(scope, ce, 1, return_value);
1174 }
1175 }
1176 /* }}} */
1177
1178 /* {{{ proto array get_object_vars(object obj)
1179 Returns an array of object properties */
ZEND_FUNCTION(get_object_vars)1180 ZEND_FUNCTION(get_object_vars)
1181 {
1182 zval *obj;
1183 zval *value;
1184 HashTable *properties;
1185 zend_string *key;
1186 zend_object *zobj;
1187 zend_ulong num_key;
1188
1189 ZEND_PARSE_PARAMETERS_START(1, 1)
1190 Z_PARAM_OBJECT(obj)
1191 ZEND_PARSE_PARAMETERS_END();
1192
1193 properties = Z_OBJ_HT_P(obj)->get_properties(obj);
1194 if (properties == NULL) {
1195 RETURN_FALSE;
1196 }
1197
1198 zobj = Z_OBJ_P(obj);
1199
1200 if (!zobj->ce->default_properties_count && properties == zobj->properties && !GC_IS_RECURSIVE(properties)) {
1201 /* fast copy */
1202 if (EXPECTED(zobj->handlers == &std_object_handlers)) {
1203 RETURN_ARR(zend_proptable_to_symtable(properties, 0));
1204 }
1205 RETURN_ARR(zend_proptable_to_symtable(properties, 1));
1206 } else {
1207 array_init_size(return_value, zend_hash_num_elements(properties));
1208
1209 ZEND_HASH_FOREACH_KEY_VAL(properties, num_key, key, value) {
1210 zend_bool is_dynamic = 1;
1211 if (Z_TYPE_P(value) == IS_INDIRECT) {
1212 value = Z_INDIRECT_P(value);
1213 if (UNEXPECTED(Z_ISUNDEF_P(value))) {
1214 continue;
1215 }
1216
1217 is_dynamic = 0;
1218 }
1219
1220 if (key && zend_check_property_access(zobj, key, is_dynamic) == FAILURE) {
1221 continue;
1222 }
1223
1224 if (Z_ISREF_P(value) && Z_REFCOUNT_P(value) == 1) {
1225 value = Z_REFVAL_P(value);
1226 }
1227 Z_TRY_ADDREF_P(value);
1228
1229 if (UNEXPECTED(!key)) {
1230 /* This case is only possible due to loopholes, e.g. ArrayObject */
1231 zend_hash_index_add(Z_ARRVAL_P(return_value), num_key, value);
1232 } else if (!is_dynamic && ZSTR_VAL(key)[0] == 0) {
1233 const char *prop_name, *class_name;
1234 size_t prop_len;
1235 zend_unmangle_property_name_ex(key, &class_name, &prop_name, &prop_len);
1236 /* We assume here that a mangled property name is never
1237 * numeric. This is probably a safe assumption, but
1238 * theoretically someone might write an extension with
1239 * private, numeric properties. Well, too bad.
1240 */
1241 zend_hash_str_add_new(Z_ARRVAL_P(return_value), prop_name, prop_len, value);
1242 } else {
1243 zend_symtable_add_new(Z_ARRVAL_P(return_value), key, value);
1244 }
1245 } ZEND_HASH_FOREACH_END();
1246 }
1247 }
1248 /* }}} */
1249
1250 /* {{{ proto array get_mangled_object_vars(object obj)
1251 Returns an array of mangled object properties. Does not respect property visibility. */
ZEND_FUNCTION(get_mangled_object_vars)1252 ZEND_FUNCTION(get_mangled_object_vars)
1253 {
1254 zval *obj;
1255 HashTable *properties;
1256
1257 ZEND_PARSE_PARAMETERS_START(1, 1)
1258 Z_PARAM_OBJECT(obj)
1259 ZEND_PARSE_PARAMETERS_END();
1260
1261 properties = Z_OBJ_HT_P(obj)->get_properties(obj);
1262 if (!properties) {
1263 ZVAL_EMPTY_ARRAY(return_value);
1264 return;
1265 }
1266
1267 properties = zend_proptable_to_symtable(properties,
1268 (Z_OBJCE_P(obj)->default_properties_count ||
1269 Z_OBJ_P(obj)->handlers != &std_object_handlers ||
1270 GC_IS_RECURSIVE(properties)));
1271 RETURN_ARR(properties);
1272 }
1273 /* }}} */
1274
same_name(zend_string * key,zend_string * name)1275 static int same_name(zend_string *key, zend_string *name) /* {{{ */
1276 {
1277 zend_string *lcname;
1278 int ret;
1279
1280 if (key == name) {
1281 return 1;
1282 }
1283 if (ZSTR_LEN(key) != ZSTR_LEN(name)) {
1284 return 0;
1285 }
1286 lcname = zend_string_tolower(name);
1287 ret = memcmp(ZSTR_VAL(lcname), ZSTR_VAL(key), ZSTR_LEN(key)) == 0;
1288 zend_string_release_ex(lcname, 0);
1289 return ret;
1290 }
1291 /* }}} */
1292
1293 /* {{{ proto array get_class_methods(mixed class)
1294 Returns an array of method names for class or class instance. */
ZEND_FUNCTION(get_class_methods)1295 ZEND_FUNCTION(get_class_methods)
1296 {
1297 zval *klass;
1298 zval method_name;
1299 zend_class_entry *ce = NULL;
1300 zend_class_entry *scope;
1301 zend_function *mptr;
1302 zend_string *key;
1303
1304 if (zend_parse_parameters(ZEND_NUM_ARGS(), "z", &klass) == FAILURE) {
1305 return;
1306 }
1307
1308 if (Z_TYPE_P(klass) == IS_OBJECT) {
1309 ce = Z_OBJCE_P(klass);
1310 } else if (Z_TYPE_P(klass) == IS_STRING) {
1311 ce = zend_lookup_class(Z_STR_P(klass));
1312 }
1313
1314 if (!ce) {
1315 RETURN_NULL();
1316 }
1317
1318 array_init(return_value);
1319 scope = zend_get_executed_scope();
1320
1321 ZEND_HASH_FOREACH_STR_KEY_PTR(&ce->function_table, key, mptr) {
1322
1323 if ((mptr->common.fn_flags & ZEND_ACC_PUBLIC)
1324 || (scope &&
1325 (((mptr->common.fn_flags & ZEND_ACC_PROTECTED) &&
1326 zend_check_protected(mptr->common.scope, scope))
1327 || ((mptr->common.fn_flags & ZEND_ACC_PRIVATE) &&
1328 scope == mptr->common.scope)))
1329 ) {
1330 if (mptr->type == ZEND_USER_FUNCTION &&
1331 (!mptr->op_array.refcount || *mptr->op_array.refcount > 1) &&
1332 key && !same_name(key, mptr->common.function_name)) {
1333 ZVAL_STR_COPY(&method_name, zend_find_alias_name(mptr->common.scope, key));
1334 zend_hash_next_index_insert_new(Z_ARRVAL_P(return_value), &method_name);
1335 } else {
1336 ZVAL_STR_COPY(&method_name, mptr->common.function_name);
1337 zend_hash_next_index_insert_new(Z_ARRVAL_P(return_value), &method_name);
1338 }
1339 }
1340 } ZEND_HASH_FOREACH_END();
1341 }
1342 /* }}} */
1343
1344 /* {{{ proto bool method_exists(object object, string method)
1345 Checks if the class method exists */
ZEND_FUNCTION(method_exists)1346 ZEND_FUNCTION(method_exists)
1347 {
1348 zval *klass;
1349 zend_string *method_name;
1350 zend_string *lcname;
1351 zend_class_entry *ce;
1352 zend_function *func;
1353
1354 ZEND_PARSE_PARAMETERS_START(2, 2)
1355 Z_PARAM_ZVAL(klass)
1356 Z_PARAM_STR(method_name)
1357 ZEND_PARSE_PARAMETERS_END();
1358
1359 if (Z_TYPE_P(klass) == IS_OBJECT) {
1360 ce = Z_OBJCE_P(klass);
1361 } else if (Z_TYPE_P(klass) == IS_STRING) {
1362 if ((ce = zend_lookup_class(Z_STR_P(klass))) == NULL) {
1363 RETURN_FALSE;
1364 }
1365 } else {
1366 RETURN_FALSE;
1367 }
1368
1369 lcname = zend_string_tolower(method_name);
1370 func = zend_hash_find_ptr(&ce->function_table, lcname);
1371 zend_string_release_ex(lcname, 0);
1372
1373 if (func) {
1374 /* Exclude shadow properties when checking a method on a specific class. Include
1375 * them when checking an object, as method_exists() generally ignores visibility.
1376 * TODO: Should we use EG(scope) for the object case instead? */
1377 RETURN_BOOL(Z_TYPE_P(klass) == IS_OBJECT
1378 || !(func->common.fn_flags & ZEND_ACC_PRIVATE) || func->common.scope == ce);
1379 }
1380
1381 if (Z_TYPE_P(klass) == IS_OBJECT) {
1382 zend_object *obj = Z_OBJ_P(klass);
1383 func = Z_OBJ_HT_P(klass)->get_method(&obj, method_name, NULL);
1384 if (func != NULL) {
1385 if (func->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE) {
1386 /* Returns true to the fake Closure's __invoke */
1387 RETVAL_BOOL(func->common.scope == zend_ce_closure
1388 && zend_string_equals_literal(method_name, ZEND_INVOKE_FUNC_NAME));
1389
1390 zend_string_release_ex(func->common.function_name, 0);
1391 zend_free_trampoline(func);
1392 return;
1393 }
1394 RETURN_TRUE;
1395 }
1396 }
1397 RETURN_FALSE;
1398 }
1399 /* }}} */
1400
1401 /* {{{ proto bool property_exists(mixed object_or_class, string property_name)
1402 Checks if the object or class has a property */
ZEND_FUNCTION(property_exists)1403 ZEND_FUNCTION(property_exists)
1404 {
1405 zval *object;
1406 zend_string *property;
1407 zend_class_entry *ce;
1408 zend_property_info *property_info;
1409 zval property_z;
1410
1411 if (zend_parse_parameters(ZEND_NUM_ARGS(), "zS", &object, &property) == FAILURE) {
1412 return;
1413 }
1414
1415 if (property == NULL) {
1416 RETURN_FALSE;
1417 }
1418
1419 if (Z_TYPE_P(object) == IS_STRING) {
1420 ce = zend_lookup_class(Z_STR_P(object));
1421 if (!ce) {
1422 RETURN_FALSE;
1423 }
1424 } else if (Z_TYPE_P(object) == IS_OBJECT) {
1425 ce = Z_OBJCE_P(object);
1426 } else {
1427 zend_error(E_WARNING, "First parameter must either be an object or the name of an existing class");
1428 RETURN_NULL();
1429 }
1430
1431 property_info = zend_hash_find_ptr(&ce->properties_info, property);
1432 if (property_info != NULL
1433 && (!(property_info->flags & ZEND_ACC_PRIVATE)
1434 || property_info->ce == ce)) {
1435 RETURN_TRUE;
1436 }
1437
1438 ZVAL_STR(&property_z, property);
1439
1440 if (Z_TYPE_P(object) == IS_OBJECT &&
1441 Z_OBJ_HANDLER_P(object, has_property)(object, &property_z, 2, NULL)) {
1442 RETURN_TRUE;
1443 }
1444 RETURN_FALSE;
1445 }
1446 /* }}} */
1447
class_exists_impl(INTERNAL_FUNCTION_PARAMETERS,int flags,int skip_flags)1448 static inline void class_exists_impl(INTERNAL_FUNCTION_PARAMETERS, int flags, int skip_flags) /* {{{ */
1449 {
1450 zend_string *name;
1451 zend_string *lcname;
1452 zend_class_entry *ce;
1453 zend_bool autoload = 1;
1454
1455 ZEND_PARSE_PARAMETERS_START(1, 2)
1456 Z_PARAM_STR(name)
1457 Z_PARAM_OPTIONAL
1458 Z_PARAM_BOOL(autoload)
1459 ZEND_PARSE_PARAMETERS_END();
1460
1461 if (!autoload) {
1462 if (ZSTR_VAL(name)[0] == '\\') {
1463 /* Ignore leading "\" */
1464 lcname = zend_string_alloc(ZSTR_LEN(name) - 1, 0);
1465 zend_str_tolower_copy(ZSTR_VAL(lcname), ZSTR_VAL(name) + 1, ZSTR_LEN(name) - 1);
1466 } else {
1467 lcname = zend_string_tolower(name);
1468 }
1469
1470 ce = zend_hash_find_ptr(EG(class_table), lcname);
1471 zend_string_release_ex(lcname, 0);
1472 } else {
1473 ce = zend_lookup_class(name);
1474 }
1475
1476 if (ce) {
1477 RETURN_BOOL(((ce->ce_flags & flags) == flags) && !(ce->ce_flags & skip_flags));
1478 } else {
1479 RETURN_FALSE;
1480 }
1481 }
1482 /* {{{ */
1483
1484 /* {{{ proto bool class_exists(string classname [, bool autoload])
1485 Checks if the class exists */
ZEND_FUNCTION(class_exists)1486 ZEND_FUNCTION(class_exists)
1487 {
1488 class_exists_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, ZEND_ACC_LINKED, ZEND_ACC_INTERFACE | ZEND_ACC_TRAIT);
1489 }
1490 /* }}} */
1491
1492 /* {{{ proto bool interface_exists(string classname [, bool autoload])
1493 Checks if the class exists */
ZEND_FUNCTION(interface_exists)1494 ZEND_FUNCTION(interface_exists)
1495 {
1496 class_exists_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, ZEND_ACC_LINKED|ZEND_ACC_INTERFACE, 0);
1497 }
1498 /* }}} */
1499
1500 /* {{{ proto bool trait_exists(string traitname [, bool autoload])
1501 Checks if the trait exists */
ZEND_FUNCTION(trait_exists)1502 ZEND_FUNCTION(trait_exists)
1503 {
1504 class_exists_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, ZEND_ACC_TRAIT, 0);
1505 }
1506 /* }}} */
1507
1508 /* {{{ proto bool function_exists(string function_name)
1509 Checks if the function exists */
ZEND_FUNCTION(function_exists)1510 ZEND_FUNCTION(function_exists)
1511 {
1512 zend_string *name;
1513 zend_function *func;
1514 zend_string *lcname;
1515
1516 ZEND_PARSE_PARAMETERS_START(1, 1)
1517 Z_PARAM_STR(name)
1518 ZEND_PARSE_PARAMETERS_END();
1519
1520 if (ZSTR_VAL(name)[0] == '\\') {
1521 /* Ignore leading "\" */
1522 lcname = zend_string_alloc(ZSTR_LEN(name) - 1, 0);
1523 zend_str_tolower_copy(ZSTR_VAL(lcname), ZSTR_VAL(name) + 1, ZSTR_LEN(name) - 1);
1524 } else {
1525 lcname = zend_string_tolower(name);
1526 }
1527
1528 func = zend_hash_find_ptr(EG(function_table), lcname);
1529 zend_string_release_ex(lcname, 0);
1530
1531 /*
1532 * A bit of a hack, but not a bad one: we see if the handler of the function
1533 * is actually one that displays "function is disabled" message.
1534 */
1535 RETURN_BOOL(func && (func->type != ZEND_INTERNAL_FUNCTION ||
1536 func->internal_function.handler != zif_display_disabled_function));
1537 }
1538 /* }}} */
1539
1540 /* {{{ proto bool class_alias(string user_class_name , string alias_name [, bool autoload])
1541 Creates an alias for user defined class */
ZEND_FUNCTION(class_alias)1542 ZEND_FUNCTION(class_alias)
1543 {
1544 zend_string *class_name;
1545 char *alias_name;
1546 zend_class_entry *ce;
1547 size_t alias_name_len;
1548 zend_bool autoload = 1;
1549
1550 if (zend_parse_parameters(ZEND_NUM_ARGS(), "Ss|b", &class_name, &alias_name, &alias_name_len, &autoload) == FAILURE) {
1551 return;
1552 }
1553
1554 ce = zend_lookup_class_ex(class_name, NULL, !autoload ? ZEND_FETCH_CLASS_NO_AUTOLOAD : 0);
1555
1556 if (ce) {
1557 if (ce->type == ZEND_USER_CLASS) {
1558 if (zend_register_class_alias_ex(alias_name, alias_name_len, ce, 0) == SUCCESS) {
1559 RETURN_TRUE;
1560 } else {
1561 zend_error(E_WARNING, "Cannot declare %s %s, because the name is already in use", zend_get_object_type(ce), alias_name);
1562 RETURN_FALSE;
1563 }
1564 } else {
1565 zend_error(E_WARNING, "First argument of class_alias() must be a name of user defined class");
1566 RETURN_FALSE;
1567 }
1568 } else {
1569 zend_error(E_WARNING, "Class '%s' not found", ZSTR_VAL(class_name));
1570 RETURN_FALSE;
1571 }
1572 }
1573 /* }}} */
1574
1575 /* {{{ proto array get_included_files(void)
1576 Returns an array with the file names that were include_once()'d */
ZEND_FUNCTION(get_included_files)1577 ZEND_FUNCTION(get_included_files)
1578 {
1579 zend_string *entry;
1580
1581 if (zend_parse_parameters_none() == FAILURE) {
1582 return;
1583 }
1584
1585 array_init(return_value);
1586 ZEND_HASH_FOREACH_STR_KEY(&EG(included_files), entry) {
1587 if (entry) {
1588 add_next_index_str(return_value, zend_string_copy(entry));
1589 }
1590 } ZEND_HASH_FOREACH_END();
1591 }
1592 /* }}} */
1593
1594 /* {{{ proto void trigger_error(string message [, int error_type])
1595 Generates a user-level error/warning/notice message */
ZEND_FUNCTION(trigger_error)1596 ZEND_FUNCTION(trigger_error)
1597 {
1598 zend_long error_type = E_USER_NOTICE;
1599 char *message;
1600 size_t message_len;
1601
1602 if (zend_parse_parameters(ZEND_NUM_ARGS(), "s|l", &message, &message_len, &error_type) == FAILURE) {
1603 return;
1604 }
1605
1606 switch (error_type) {
1607 case E_USER_ERROR:
1608 case E_USER_WARNING:
1609 case E_USER_NOTICE:
1610 case E_USER_DEPRECATED:
1611 break;
1612 default:
1613 zend_error(E_WARNING, "Invalid error type specified");
1614 RETURN_FALSE;
1615 break;
1616 }
1617
1618 zend_error((int)error_type, "%s", message);
1619 RETURN_TRUE;
1620 }
1621 /* }}} */
1622
1623 /* {{{ proto string set_error_handler(callable error_handler [, int error_types])
1624 Sets a user-defined error handler function. Returns the previously defined error handler, or false on error */
ZEND_FUNCTION(set_error_handler)1625 ZEND_FUNCTION(set_error_handler)
1626 {
1627 zval *error_handler;
1628 zend_long error_type = E_ALL;
1629
1630 if (zend_parse_parameters(ZEND_NUM_ARGS(), "z|l", &error_handler, &error_type) == FAILURE) {
1631 return;
1632 }
1633
1634 if (Z_TYPE_P(error_handler) != IS_NULL) { /* NULL == unset */
1635 if (!zend_is_callable(error_handler, 0, NULL)) {
1636 zend_string *error_handler_name = zend_get_callable_name(error_handler);
1637 zend_error(E_WARNING, "%s() expects the argument (%s) to be a valid callback",
1638 get_active_function_name(), error_handler_name?ZSTR_VAL(error_handler_name):"unknown");
1639 zend_string_release_ex(error_handler_name, 0);
1640 return;
1641 }
1642 }
1643
1644 if (Z_TYPE(EG(user_error_handler)) != IS_UNDEF) {
1645 ZVAL_COPY(return_value, &EG(user_error_handler));
1646 }
1647
1648 zend_stack_push(&EG(user_error_handlers_error_reporting), &EG(user_error_handler_error_reporting));
1649 zend_stack_push(&EG(user_error_handlers), &EG(user_error_handler));
1650
1651 if (Z_TYPE_P(error_handler) == IS_NULL) { /* unset user-defined handler */
1652 ZVAL_UNDEF(&EG(user_error_handler));
1653 return;
1654 }
1655
1656 ZVAL_COPY(&EG(user_error_handler), error_handler);
1657 EG(user_error_handler_error_reporting) = (int)error_type;
1658 }
1659 /* }}} */
1660
1661 /* {{{ proto void restore_error_handler(void)
1662 Restores the previously defined error handler function */
ZEND_FUNCTION(restore_error_handler)1663 ZEND_FUNCTION(restore_error_handler)
1664 {
1665 if (zend_parse_parameters_none() == FAILURE) {
1666 return;
1667 }
1668
1669 if (Z_TYPE(EG(user_error_handler)) != IS_UNDEF) {
1670 zval zeh;
1671
1672 ZVAL_COPY_VALUE(&zeh, &EG(user_error_handler));
1673 ZVAL_UNDEF(&EG(user_error_handler));
1674 zval_ptr_dtor(&zeh);
1675 }
1676
1677 if (zend_stack_is_empty(&EG(user_error_handlers))) {
1678 ZVAL_UNDEF(&EG(user_error_handler));
1679 } else {
1680 zval *tmp;
1681 EG(user_error_handler_error_reporting) = zend_stack_int_top(&EG(user_error_handlers_error_reporting));
1682 zend_stack_del_top(&EG(user_error_handlers_error_reporting));
1683 tmp = zend_stack_top(&EG(user_error_handlers));
1684 ZVAL_COPY_VALUE(&EG(user_error_handler), tmp);
1685 zend_stack_del_top(&EG(user_error_handlers));
1686 }
1687 RETURN_TRUE;
1688 }
1689 /* }}} */
1690
1691 /* {{{ proto mixed set_exception_handler(callable exception_handler)
1692 Sets a user-defined exception handler function. Returns the previously defined exception handler, or false on error */
ZEND_FUNCTION(set_exception_handler)1693 ZEND_FUNCTION(set_exception_handler)
1694 {
1695 zval *exception_handler;
1696
1697 if (zend_parse_parameters(ZEND_NUM_ARGS(), "z", &exception_handler) == FAILURE) {
1698 return;
1699 }
1700
1701 if (Z_TYPE_P(exception_handler) != IS_NULL) { /* NULL == unset */
1702 if (!zend_is_callable(exception_handler, 0, NULL)) {
1703 zend_string *exception_handler_name = zend_get_callable_name(exception_handler);
1704 zend_error(E_WARNING, "%s() expects the argument (%s) to be a valid callback",
1705 get_active_function_name(), exception_handler_name?ZSTR_VAL(exception_handler_name):"unknown");
1706 zend_string_release_ex(exception_handler_name, 0);
1707 return;
1708 }
1709 }
1710
1711 if (Z_TYPE(EG(user_exception_handler)) != IS_UNDEF) {
1712 ZVAL_COPY(return_value, &EG(user_exception_handler));
1713 }
1714
1715 zend_stack_push(&EG(user_exception_handlers), &EG(user_exception_handler));
1716
1717 if (Z_TYPE_P(exception_handler) == IS_NULL) { /* unset user-defined handler */
1718 ZVAL_UNDEF(&EG(user_exception_handler));
1719 return;
1720 }
1721
1722 ZVAL_COPY(&EG(user_exception_handler), exception_handler);
1723 }
1724 /* }}} */
1725
1726 /* {{{ proto void restore_exception_handler(void)
1727 Restores the previously defined exception handler function */
ZEND_FUNCTION(restore_exception_handler)1728 ZEND_FUNCTION(restore_exception_handler)
1729 {
1730 if (zend_parse_parameters_none() == FAILURE) {
1731 return;
1732 }
1733
1734 if (Z_TYPE(EG(user_exception_handler)) != IS_UNDEF) {
1735 zval_ptr_dtor(&EG(user_exception_handler));
1736 }
1737 if (zend_stack_is_empty(&EG(user_exception_handlers))) {
1738 ZVAL_UNDEF(&EG(user_exception_handler));
1739 } else {
1740 zval *tmp = zend_stack_top(&EG(user_exception_handlers));
1741 ZVAL_COPY_VALUE(&EG(user_exception_handler), tmp);
1742 zend_stack_del_top(&EG(user_exception_handlers));
1743 }
1744 RETURN_TRUE;
1745 }
1746 /* }}} */
1747
copy_class_or_interface_name(zval * array,zend_string * key,zend_class_entry * ce)1748 static void copy_class_or_interface_name(zval *array, zend_string *key, zend_class_entry *ce) /* {{{ */
1749 {
1750 if ((ce->refcount == 1 && !(ce->ce_flags & ZEND_ACC_IMMUTABLE)) ||
1751 same_name(key, ce->name)) {
1752 key = ce->name;
1753 }
1754 add_next_index_str(array, zend_string_copy(key));
1755 }
1756 /* }}} */
1757
get_declared_class_impl(INTERNAL_FUNCTION_PARAMETERS,int flags,int skip_flags)1758 static inline void get_declared_class_impl(INTERNAL_FUNCTION_PARAMETERS, int flags, int skip_flags) /* {{{ */
1759 {
1760 zend_string *key;
1761 zend_class_entry *ce;
1762
1763 if (zend_parse_parameters_none() == FAILURE) {
1764 return;
1765 }
1766
1767 array_init(return_value);
1768 ZEND_HASH_FOREACH_STR_KEY_PTR(EG(class_table), key, ce) {
1769 if (key
1770 && ZSTR_VAL(key)[0] != 0
1771 && (ce->ce_flags & flags)
1772 && !(ce->ce_flags & skip_flags)) {
1773 copy_class_or_interface_name(return_value, key, ce);
1774 }
1775 } ZEND_HASH_FOREACH_END();
1776 }
1777 /* {{{ */
1778
1779 /* {{{ proto array get_declared_traits()
1780 Returns an array of all declared traits. */
ZEND_FUNCTION(get_declared_traits)1781 ZEND_FUNCTION(get_declared_traits)
1782 {
1783 get_declared_class_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, ZEND_ACC_TRAIT, 0);
1784 }
1785 /* }}} */
1786
1787 /* {{{ proto array get_declared_classes()
1788 Returns an array of all declared classes. */
ZEND_FUNCTION(get_declared_classes)1789 ZEND_FUNCTION(get_declared_classes)
1790 {
1791 get_declared_class_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, ZEND_ACC_LINKED, ZEND_ACC_INTERFACE | ZEND_ACC_TRAIT);
1792 }
1793 /* }}} */
1794
1795 /* {{{ proto array get_declared_interfaces()
1796 Returns an array of all declared interfaces. */
ZEND_FUNCTION(get_declared_interfaces)1797 ZEND_FUNCTION(get_declared_interfaces)
1798 {
1799 get_declared_class_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, ZEND_ACC_INTERFACE, 0);
1800 }
1801 /* }}} */
1802
1803 /* {{{ proto array get_defined_functions(void)
1804 Returns an array of all defined functions */
ZEND_FUNCTION(get_defined_functions)1805 ZEND_FUNCTION(get_defined_functions)
1806 {
1807 zval internal, user;
1808 zend_string *key;
1809 zend_function *func;
1810 zend_bool exclude_disabled = 0;
1811
1812 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|b", &exclude_disabled) == FAILURE) {
1813 return;
1814 }
1815
1816 array_init(&internal);
1817 array_init(&user);
1818 array_init(return_value);
1819
1820 ZEND_HASH_FOREACH_STR_KEY_PTR(EG(function_table), key, func) {
1821 if (key && ZSTR_VAL(key)[0] != 0) {
1822 if (func->type == ZEND_INTERNAL_FUNCTION
1823 && (!exclude_disabled || func->internal_function.handler != ZEND_FN(display_disabled_function))) {
1824 add_next_index_str(&internal, zend_string_copy(key));
1825 } else if (func->type == ZEND_USER_FUNCTION) {
1826 add_next_index_str(&user, zend_string_copy(key));
1827 }
1828 }
1829 } ZEND_HASH_FOREACH_END();
1830
1831 zend_hash_str_add_new(Z_ARRVAL_P(return_value), "internal", sizeof("internal")-1, &internal);
1832 zend_hash_str_add_new(Z_ARRVAL_P(return_value), "user", sizeof("user")-1, &user);
1833 }
1834 /* }}} */
1835
1836 /* {{{ proto array get_defined_vars(void)
1837 Returns an associative array of names and values of all currently defined variable names (variables in the current scope) */
ZEND_FUNCTION(get_defined_vars)1838 ZEND_FUNCTION(get_defined_vars)
1839 {
1840 zend_array *symbol_table;
1841 if (zend_forbid_dynamic_call("get_defined_vars()") == FAILURE) {
1842 return;
1843 }
1844
1845 symbol_table = zend_rebuild_symbol_table();
1846 if (UNEXPECTED(symbol_table == NULL)) {
1847 return;
1848 }
1849
1850 RETURN_ARR(zend_array_dup(symbol_table));
1851 }
1852 /* }}} */
1853
1854 #define LAMBDA_TEMP_FUNCNAME "__lambda_func"
1855 /* {{{ proto string create_function(string args, string code)
1856 Creates an anonymous function, and returns its name (funny, eh?) */
ZEND_FUNCTION(create_function)1857 ZEND_FUNCTION(create_function)
1858 {
1859 zend_string *function_name;
1860 char *eval_code, *function_args, *function_code;
1861 size_t eval_code_length, function_args_len, function_code_len;
1862 int retval;
1863 char *eval_name;
1864
1865 if (zend_parse_parameters(ZEND_NUM_ARGS(), "ss", &function_args, &function_args_len, &function_code, &function_code_len) == FAILURE) {
1866 return;
1867 }
1868
1869 eval_code = (char *) emalloc(sizeof("function " LAMBDA_TEMP_FUNCNAME)
1870 +function_args_len
1871 +2 /* for the args parentheses */
1872 +2 /* for the curly braces */
1873 +function_code_len);
1874
1875 eval_code_length = sizeof("function " LAMBDA_TEMP_FUNCNAME "(") - 1;
1876 memcpy(eval_code, "function " LAMBDA_TEMP_FUNCNAME "(", eval_code_length);
1877
1878 memcpy(eval_code + eval_code_length, function_args, function_args_len);
1879 eval_code_length += function_args_len;
1880
1881 eval_code[eval_code_length++] = ')';
1882 eval_code[eval_code_length++] = '{';
1883
1884 memcpy(eval_code + eval_code_length, function_code, function_code_len);
1885 eval_code_length += function_code_len;
1886
1887 eval_code[eval_code_length++] = '}';
1888 eval_code[eval_code_length] = '\0';
1889
1890 eval_name = zend_make_compiled_string_description("runtime-created function");
1891 retval = zend_eval_stringl(eval_code, eval_code_length, NULL, eval_name);
1892 efree(eval_code);
1893 efree(eval_name);
1894
1895 if (retval==SUCCESS) {
1896 zend_op_array *func;
1897 HashTable *static_variables;
1898
1899 func = zend_hash_str_find_ptr(EG(function_table), LAMBDA_TEMP_FUNCNAME, sizeof(LAMBDA_TEMP_FUNCNAME)-1);
1900 if (!func) {
1901 zend_error_noreturn(E_CORE_ERROR, "Unexpected inconsistency in create_function()");
1902 RETURN_FALSE;
1903 }
1904 if (func->refcount) {
1905 (*func->refcount)++;
1906 }
1907 static_variables = func->static_variables;
1908 func->static_variables = NULL;
1909 zend_hash_str_del(EG(function_table), LAMBDA_TEMP_FUNCNAME, sizeof(LAMBDA_TEMP_FUNCNAME)-1);
1910 func->static_variables = static_variables;
1911
1912 function_name = zend_string_alloc(sizeof("0lambda_")+MAX_LENGTH_OF_LONG, 0);
1913 ZSTR_VAL(function_name)[0] = '\0';
1914
1915 do {
1916 ZSTR_LEN(function_name) = snprintf(ZSTR_VAL(function_name) + 1, sizeof("lambda_")+MAX_LENGTH_OF_LONG, "lambda_%d", ++EG(lambda_count)) + 1;
1917 } while (zend_hash_add_ptr(EG(function_table), function_name, func) == NULL);
1918 RETURN_NEW_STR(function_name);
1919 } else {
1920 zend_hash_str_del(EG(function_table), LAMBDA_TEMP_FUNCNAME, sizeof(LAMBDA_TEMP_FUNCNAME)-1);
1921 RETURN_FALSE;
1922 }
1923 }
1924 /* }}} */
1925
1926 #if ZEND_DEBUG && defined(ZTS)
ZEND_FUNCTION(zend_thread_id)1927 ZEND_FUNCTION(zend_thread_id)
1928 {
1929 RETURN_LONG((zend_long)tsrm_thread_id());
1930 }
1931 #endif
1932
1933 /* {{{ proto string get_resource_type(resource res)
1934 Get the resource type name for a given resource */
ZEND_FUNCTION(get_resource_type)1935 ZEND_FUNCTION(get_resource_type)
1936 {
1937 const char *resource_type;
1938 zval *z_resource_type;
1939
1940 if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &z_resource_type) == FAILURE) {
1941 return;
1942 }
1943
1944 resource_type = zend_rsrc_list_get_rsrc_type(Z_RES_P(z_resource_type));
1945 if (resource_type) {
1946 RETURN_STRING(resource_type);
1947 } else {
1948 RETURN_STRING("Unknown");
1949 }
1950 }
1951 /* }}} */
1952
1953 /* {{{ proto array get_resources([string resouce_type])
1954 Get an array with all active resources */
ZEND_FUNCTION(get_resources)1955 ZEND_FUNCTION(get_resources)
1956 {
1957 zend_string *type = NULL;
1958 zend_string *key;
1959 zend_ulong index;
1960 zval *val;
1961
1962 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|S", &type) == FAILURE) {
1963 return;
1964 }
1965
1966 if (!type) {
1967 array_init(return_value);
1968 ZEND_HASH_FOREACH_KEY_VAL(&EG(regular_list), index, key, val) {
1969 if (!key) {
1970 Z_ADDREF_P(val);
1971 zend_hash_index_add_new(Z_ARRVAL_P(return_value), index, val);
1972 }
1973 } ZEND_HASH_FOREACH_END();
1974 } else if (zend_string_equals_literal(type, "Unknown")) {
1975 array_init(return_value);
1976 ZEND_HASH_FOREACH_KEY_VAL(&EG(regular_list), index, key, val) {
1977 if (!key && Z_RES_TYPE_P(val) <= 0) {
1978 Z_ADDREF_P(val);
1979 zend_hash_index_add_new(Z_ARRVAL_P(return_value), index, val);
1980 }
1981 } ZEND_HASH_FOREACH_END();
1982 } else {
1983 int id = zend_fetch_list_dtor_id(ZSTR_VAL(type));
1984
1985 if (id <= 0) {
1986 zend_error(E_WARNING, "get_resources(): Unknown resource type '%s'", ZSTR_VAL(type));
1987 RETURN_FALSE;
1988 }
1989
1990 array_init(return_value);
1991 ZEND_HASH_FOREACH_KEY_VAL(&EG(regular_list), index, key, val) {
1992 if (!key && Z_RES_TYPE_P(val) == id) {
1993 Z_ADDREF_P(val);
1994 zend_hash_index_add_new(Z_ARRVAL_P(return_value), index, val);
1995 }
1996 } ZEND_HASH_FOREACH_END();
1997 }
1998 }
1999 /* }}} */
2000
add_zendext_info(zend_extension * ext,void * arg)2001 static int add_zendext_info(zend_extension *ext, void *arg) /* {{{ */
2002 {
2003 zval *name_array = (zval *)arg;
2004 add_next_index_string(name_array, ext->name);
2005 return 0;
2006 }
2007 /* }}} */
2008
2009 /* {{{ proto array get_loaded_extensions([bool zend_extensions])
2010 Return an array containing names of loaded extensions */
ZEND_FUNCTION(get_loaded_extensions)2011 ZEND_FUNCTION(get_loaded_extensions)
2012 {
2013 zend_bool zendext = 0;
2014
2015 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|b", &zendext) == FAILURE) {
2016 return;
2017 }
2018
2019 array_init(return_value);
2020
2021 if (zendext) {
2022 zend_llist_apply_with_argument(&zend_extensions, (llist_apply_with_arg_func_t)add_zendext_info, return_value);
2023 } else {
2024 zend_module_entry *module;
2025
2026 ZEND_HASH_FOREACH_PTR(&module_registry, module) {
2027 add_next_index_string(return_value, module->name);
2028 } ZEND_HASH_FOREACH_END();
2029 }
2030 }
2031 /* }}} */
2032
2033 /* {{{ proto array get_defined_constants([bool categorize])
2034 Return an array containing the names and values of all defined constants */
ZEND_FUNCTION(get_defined_constants)2035 ZEND_FUNCTION(get_defined_constants)
2036 {
2037 zend_bool categorize = 0;
2038
2039 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|b", &categorize) == FAILURE) {
2040 return;
2041 }
2042
2043 array_init(return_value);
2044
2045 if (categorize) {
2046 zend_constant *val;
2047 int module_number;
2048 zval *modules, const_val;
2049 char **module_names;
2050 zend_module_entry *module;
2051 int i = 1;
2052
2053 modules = ecalloc(zend_hash_num_elements(&module_registry) + 2, sizeof(zval));
2054 module_names = emalloc((zend_hash_num_elements(&module_registry) + 2) * sizeof(char *));
2055
2056 module_names[0] = "internal";
2057 ZEND_HASH_FOREACH_PTR(&module_registry, module) {
2058 module_names[module->module_number] = (char *)module->name;
2059 i++;
2060 } ZEND_HASH_FOREACH_END();
2061 module_names[i] = "user";
2062
2063 ZEND_HASH_FOREACH_PTR(EG(zend_constants), val) {
2064 if (!val->name) {
2065 /* skip special constants */
2066 continue;
2067 }
2068
2069 if (ZEND_CONSTANT_MODULE_NUMBER(val) == PHP_USER_CONSTANT) {
2070 module_number = i;
2071 } else if (ZEND_CONSTANT_MODULE_NUMBER(val) > i) {
2072 /* should not happen */
2073 continue;
2074 } else {
2075 module_number = ZEND_CONSTANT_MODULE_NUMBER(val);
2076 }
2077
2078 if (Z_TYPE(modules[module_number]) == IS_UNDEF) {
2079 array_init(&modules[module_number]);
2080 add_assoc_zval(return_value, module_names[module_number], &modules[module_number]);
2081 }
2082
2083 ZVAL_COPY_OR_DUP(&const_val, &val->value);
2084 zend_hash_add_new(Z_ARRVAL(modules[module_number]), val->name, &const_val);
2085 } ZEND_HASH_FOREACH_END();
2086
2087 efree(module_names);
2088 efree(modules);
2089 } else {
2090 zend_constant *constant;
2091 zval const_val;
2092
2093 ZEND_HASH_FOREACH_PTR(EG(zend_constants), constant) {
2094 if (!constant->name) {
2095 /* skip special constants */
2096 continue;
2097 }
2098 ZVAL_COPY_OR_DUP(&const_val, &constant->value);
2099 zend_hash_add_new(Z_ARRVAL_P(return_value), constant->name, &const_val);
2100 } ZEND_HASH_FOREACH_END();
2101 }
2102 }
2103 /* }}} */
2104
debug_backtrace_get_args(zend_execute_data * call,zval * arg_array)2105 static void debug_backtrace_get_args(zend_execute_data *call, zval *arg_array) /* {{{ */
2106 {
2107 uint32_t num_args = ZEND_CALL_NUM_ARGS(call);
2108
2109 if (num_args) {
2110 uint32_t i = 0;
2111 zval *p = ZEND_CALL_ARG(call, 1);
2112
2113 array_init_size(arg_array, num_args);
2114 zend_hash_real_init_packed(Z_ARRVAL_P(arg_array));
2115 ZEND_HASH_FILL_PACKED(Z_ARRVAL_P(arg_array)) {
2116 if (call->func->type == ZEND_USER_FUNCTION) {
2117 uint32_t first_extra_arg = MIN(num_args, call->func->op_array.num_args);
2118
2119 if (UNEXPECTED(ZEND_CALL_INFO(call) & ZEND_CALL_HAS_SYMBOL_TABLE)) {
2120 /* In case of attached symbol_table, values on stack may be invalid
2121 * and we have to access them through symbol_table
2122 * See: https://bugs.php.net/bug.php?id=73156
2123 */
2124 zend_string *arg_name;
2125 zval *arg;
2126
2127 while (i < first_extra_arg) {
2128 arg_name = call->func->op_array.vars[i];
2129 arg = zend_hash_find_ex_ind(call->symbol_table, arg_name, 1);
2130 if (arg) {
2131 if (Z_OPT_REFCOUNTED_P(arg)) {
2132 Z_ADDREF_P(arg);
2133 }
2134 ZEND_HASH_FILL_SET(arg);
2135 } else {
2136 ZEND_HASH_FILL_SET_NULL();
2137 }
2138 ZEND_HASH_FILL_NEXT();
2139 i++;
2140 }
2141 } else {
2142 while (i < first_extra_arg) {
2143 if (EXPECTED(Z_TYPE_INFO_P(p) != IS_UNDEF)) {
2144 if (Z_OPT_REFCOUNTED_P(p)) {
2145 Z_ADDREF_P(p);
2146 }
2147 ZEND_HASH_FILL_SET(p);
2148 } else {
2149 ZEND_HASH_FILL_SET_NULL();
2150 }
2151 ZEND_HASH_FILL_NEXT();
2152 p++;
2153 i++;
2154 }
2155 }
2156 p = ZEND_CALL_VAR_NUM(call, call->func->op_array.last_var + call->func->op_array.T);
2157 }
2158
2159 while (i < num_args) {
2160 if (EXPECTED(Z_TYPE_INFO_P(p) != IS_UNDEF)) {
2161 if (Z_OPT_REFCOUNTED_P(p)) {
2162 Z_ADDREF_P(p);
2163 }
2164 ZEND_HASH_FILL_SET(p);
2165 } else {
2166 ZEND_HASH_FILL_SET_NULL();
2167 }
2168 ZEND_HASH_FILL_NEXT();
2169 p++;
2170 i++;
2171 }
2172 } ZEND_HASH_FILL_END();
2173 Z_ARRVAL_P(arg_array)->nNumOfElements = num_args;
2174 } else {
2175 ZVAL_EMPTY_ARRAY(arg_array);
2176 }
2177 }
2178 /* }}} */
2179
debug_print_backtrace_args(zval * arg_array)2180 void debug_print_backtrace_args(zval *arg_array) /* {{{ */
2181 {
2182 zval *tmp;
2183 int i = 0;
2184
2185 ZEND_HASH_FOREACH_VAL(Z_ARRVAL_P(arg_array), tmp) {
2186 if (i++) {
2187 ZEND_PUTS(", ");
2188 }
2189 zend_print_flat_zval_r(tmp);
2190 } ZEND_HASH_FOREACH_END();
2191 }
2192 /* }}} */
2193
skip_internal_handler(zend_execute_data * skip)2194 static inline zend_bool skip_internal_handler(zend_execute_data *skip) /* {{{ */
2195 {
2196 return !(skip->func && ZEND_USER_CODE(skip->func->common.type))
2197 && skip->prev_execute_data
2198 && skip->prev_execute_data->func
2199 && ZEND_USER_CODE(skip->prev_execute_data->func->common.type)
2200 && skip->prev_execute_data->opline->opcode != ZEND_DO_FCALL
2201 && skip->prev_execute_data->opline->opcode != ZEND_DO_ICALL
2202 && skip->prev_execute_data->opline->opcode != ZEND_DO_UCALL
2203 && skip->prev_execute_data->opline->opcode != ZEND_DO_FCALL_BY_NAME
2204 && skip->prev_execute_data->opline->opcode != ZEND_INCLUDE_OR_EVAL;
2205 }
2206 /* {{{ */
2207
2208 /* {{{ proto void debug_print_backtrace([int options[, int limit]]) */
ZEND_FUNCTION(debug_print_backtrace)2209 ZEND_FUNCTION(debug_print_backtrace)
2210 {
2211 zend_execute_data *call, *ptr, *skip;
2212 zend_object *object;
2213 int lineno, frameno = 0;
2214 zend_function *func;
2215 const char *function_name;
2216 const char *filename;
2217 zend_string *class_name = NULL;
2218 char *call_type;
2219 const char *include_filename = NULL;
2220 zval arg_array;
2221 int indent = 0;
2222 zend_long options = 0;
2223 zend_long limit = 0;
2224
2225 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|ll", &options, &limit) == FAILURE) {
2226 return;
2227 }
2228
2229 ZVAL_UNDEF(&arg_array);
2230 ptr = EX(prev_execute_data);
2231
2232 /* skip debug_backtrace() */
2233 call = ptr;
2234 ptr = ptr->prev_execute_data;
2235
2236 while (ptr && (limit == 0 || frameno < limit)) {
2237 frameno++;
2238 class_name = NULL;
2239 call_type = NULL;
2240 ZVAL_UNDEF(&arg_array);
2241
2242 ptr = zend_generator_check_placeholder_frame(ptr);
2243
2244 skip = ptr;
2245 /* skip internal handler */
2246 if (skip_internal_handler(skip)) {
2247 skip = skip->prev_execute_data;
2248 }
2249
2250 if (skip->func && ZEND_USER_CODE(skip->func->common.type)) {
2251 filename = ZSTR_VAL(skip->func->op_array.filename);
2252 if (skip->opline->opcode == ZEND_HANDLE_EXCEPTION) {
2253 if (EG(opline_before_exception)) {
2254 lineno = EG(opline_before_exception)->lineno;
2255 } else {
2256 lineno = skip->func->op_array.line_end;
2257 }
2258 } else {
2259 lineno = skip->opline->lineno;
2260 }
2261 } else {
2262 filename = NULL;
2263 lineno = 0;
2264 }
2265
2266 /* $this may be passed into regular internal functions */
2267 object = (Z_TYPE(call->This) == IS_OBJECT) ? Z_OBJ(call->This) : NULL;
2268
2269 if (call->func) {
2270 zend_string *zend_function_name;
2271
2272 func = call->func;
2273 if (func->common.scope && func->common.scope->trait_aliases) {
2274 zend_function_name = zend_resolve_method_name(object ? object->ce : func->common.scope, func);
2275 } else {
2276 zend_function_name = func->common.function_name;
2277 }
2278 if (zend_function_name != NULL) {
2279 function_name = ZSTR_VAL(zend_function_name);
2280 } else {
2281 function_name = NULL;
2282 }
2283 } else {
2284 func = NULL;
2285 function_name = NULL;
2286 }
2287
2288 if (function_name) {
2289 if (object) {
2290 if (func->common.scope) {
2291 class_name = func->common.scope->name;
2292 } else if (object->handlers->get_class_name == zend_std_get_class_name) {
2293 class_name = object->ce->name;
2294 } else {
2295 class_name = object->handlers->get_class_name(object);
2296 }
2297
2298 call_type = "->";
2299 } else if (func->common.scope) {
2300 class_name = func->common.scope->name;
2301 call_type = "::";
2302 } else {
2303 class_name = NULL;
2304 call_type = NULL;
2305 }
2306 if (func->type != ZEND_EVAL_CODE) {
2307 if ((options & DEBUG_BACKTRACE_IGNORE_ARGS) == 0) {
2308 debug_backtrace_get_args(call, &arg_array);
2309 }
2310 }
2311 } else {
2312 /* i know this is kinda ugly, but i'm trying to avoid extra cycles in the main execution loop */
2313 zend_bool build_filename_arg = 1;
2314
2315 if (!ptr->func || !ZEND_USER_CODE(ptr->func->common.type) || ptr->opline->opcode != ZEND_INCLUDE_OR_EVAL) {
2316 /* can happen when calling eval from a custom sapi */
2317 function_name = "unknown";
2318 build_filename_arg = 0;
2319 } else
2320 switch (ptr->opline->extended_value) {
2321 case ZEND_EVAL:
2322 function_name = "eval";
2323 build_filename_arg = 0;
2324 break;
2325 case ZEND_INCLUDE:
2326 function_name = "include";
2327 break;
2328 case ZEND_REQUIRE:
2329 function_name = "require";
2330 break;
2331 case ZEND_INCLUDE_ONCE:
2332 function_name = "include_once";
2333 break;
2334 case ZEND_REQUIRE_ONCE:
2335 function_name = "require_once";
2336 break;
2337 default:
2338 /* this can actually happen if you use debug_backtrace() in your error_handler and
2339 * you're in the top-scope */
2340 function_name = "unknown";
2341 build_filename_arg = 0;
2342 break;
2343 }
2344
2345 if (build_filename_arg && include_filename) {
2346 array_init(&arg_array);
2347 add_next_index_string(&arg_array, (char*)include_filename);
2348 }
2349 call_type = NULL;
2350 }
2351 zend_printf("#%-2d ", indent);
2352 if (class_name) {
2353 ZEND_PUTS(ZSTR_VAL(class_name));
2354 ZEND_PUTS(call_type);
2355 if (object
2356 && !func->common.scope
2357 && object->handlers->get_class_name != zend_std_get_class_name) {
2358 zend_string_release_ex(class_name, 0);
2359 }
2360 }
2361 zend_printf("%s(", function_name);
2362 if (Z_TYPE(arg_array) != IS_UNDEF) {
2363 debug_print_backtrace_args(&arg_array);
2364 zval_ptr_dtor(&arg_array);
2365 }
2366 if (filename) {
2367 zend_printf(") called at [%s:%d]\n", filename, lineno);
2368 } else {
2369 zend_execute_data *prev_call = skip;
2370 zend_execute_data *prev = skip->prev_execute_data;
2371
2372 while (prev) {
2373 if (prev_call &&
2374 prev_call->func &&
2375 !ZEND_USER_CODE(prev_call->func->common.type)) {
2376 prev = NULL;
2377 break;
2378 }
2379 if (prev->func && ZEND_USER_CODE(prev->func->common.type)) {
2380 zend_printf(") called at [%s:%d]\n", ZSTR_VAL(prev->func->op_array.filename), prev->opline->lineno);
2381 break;
2382 }
2383 prev_call = prev;
2384 prev = prev->prev_execute_data;
2385 }
2386 if (!prev) {
2387 ZEND_PUTS(")\n");
2388 }
2389 }
2390 include_filename = filename;
2391 call = skip;
2392 ptr = skip->prev_execute_data;
2393 ++indent;
2394 }
2395 }
2396
2397 /* }}} */
2398
zend_fetch_debug_backtrace(zval * return_value,int skip_last,int options,int limit)2399 ZEND_API void zend_fetch_debug_backtrace(zval *return_value, int skip_last, int options, int limit) /* {{{ */
2400 {
2401 zend_execute_data *ptr, *skip, *call = NULL;
2402 zend_object *object;
2403 int lineno, frameno = 0;
2404 zend_function *func;
2405 zend_string *function_name;
2406 zend_string *filename;
2407 zend_string *include_filename = NULL;
2408 zval stack_frame, tmp;
2409
2410 array_init(return_value);
2411
2412 if (!(ptr = EG(current_execute_data))) {
2413 return;
2414 }
2415
2416 if (!ptr->func || !ZEND_USER_CODE(ptr->func->common.type)) {
2417 call = ptr;
2418 ptr = ptr->prev_execute_data;
2419 }
2420
2421 if (ptr) {
2422 if (skip_last) {
2423 /* skip debug_backtrace() */
2424 call = ptr;
2425 ptr = ptr->prev_execute_data;
2426 } else {
2427 /* skip "new Exception()" */
2428 if (ptr->func && ZEND_USER_CODE(ptr->func->common.type) && (ptr->opline->opcode == ZEND_NEW)) {
2429 call = ptr;
2430 ptr = ptr->prev_execute_data;
2431 }
2432 }
2433 if (!call) {
2434 call = ptr;
2435 ptr = ptr->prev_execute_data;
2436 }
2437 }
2438
2439 while (ptr && (limit == 0 || frameno < limit)) {
2440 frameno++;
2441 array_init(&stack_frame);
2442
2443 ptr = zend_generator_check_placeholder_frame(ptr);
2444
2445 skip = ptr;
2446 /* skip internal handler */
2447 if (skip_internal_handler(skip)) {
2448 skip = skip->prev_execute_data;
2449 }
2450
2451 if (skip->func && ZEND_USER_CODE(skip->func->common.type)) {
2452 filename = skip->func->op_array.filename;
2453 if (skip->opline->opcode == ZEND_HANDLE_EXCEPTION) {
2454 if (EG(opline_before_exception)) {
2455 lineno = EG(opline_before_exception)->lineno;
2456 } else {
2457 lineno = skip->func->op_array.line_end;
2458 }
2459 } else {
2460 lineno = skip->opline->lineno;
2461 }
2462 ZVAL_STR_COPY(&tmp, filename);
2463 zend_hash_add_new(Z_ARRVAL(stack_frame), ZSTR_KNOWN(ZEND_STR_FILE), &tmp);
2464 ZVAL_LONG(&tmp, lineno);
2465 zend_hash_add_new(Z_ARRVAL(stack_frame), ZSTR_KNOWN(ZEND_STR_LINE), &tmp);
2466
2467 /* try to fetch args only if an FCALL was just made - elsewise we're in the middle of a function
2468 * and debug_baktrace() might have been called by the error_handler. in this case we don't
2469 * want to pop anything of the argument-stack */
2470 } else {
2471 zend_execute_data *prev_call = skip;
2472 zend_execute_data *prev = skip->prev_execute_data;
2473
2474 while (prev) {
2475 if (prev_call &&
2476 prev_call->func &&
2477 !ZEND_USER_CODE(prev_call->func->common.type) &&
2478 !(prev_call->func->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE)) {
2479 break;
2480 }
2481 if (prev->func && ZEND_USER_CODE(prev->func->common.type)) {
2482 ZVAL_STR_COPY(&tmp, prev->func->op_array.filename);
2483 zend_hash_add_new(Z_ARRVAL(stack_frame), ZSTR_KNOWN(ZEND_STR_FILE), &tmp);
2484 ZVAL_LONG(&tmp, prev->opline->lineno);
2485 zend_hash_add_new(Z_ARRVAL(stack_frame), ZSTR_KNOWN(ZEND_STR_LINE), &tmp);
2486 break;
2487 }
2488 prev_call = prev;
2489 prev = prev->prev_execute_data;
2490 }
2491 filename = NULL;
2492 }
2493
2494 /* $this may be passed into regular internal functions */
2495 object = (call && (Z_TYPE(call->This) == IS_OBJECT)) ? Z_OBJ(call->This) : NULL;
2496
2497 if (call && call->func) {
2498 func = call->func;
2499 function_name = (func->common.scope &&
2500 func->common.scope->trait_aliases) ?
2501 zend_resolve_method_name(
2502 (object ? object->ce : func->common.scope), func) :
2503 func->common.function_name;
2504 } else {
2505 func = NULL;
2506 function_name = NULL;
2507 }
2508
2509 if (function_name) {
2510 ZVAL_STR_COPY(&tmp, function_name);
2511 zend_hash_add_new(Z_ARRVAL(stack_frame), ZSTR_KNOWN(ZEND_STR_FUNCTION), &tmp);
2512
2513 if (object) {
2514 if (func->common.scope) {
2515 ZVAL_STR_COPY(&tmp, func->common.scope->name);
2516 } else if (object->handlers->get_class_name == zend_std_get_class_name) {
2517 ZVAL_STR_COPY(&tmp, object->ce->name);
2518 } else {
2519 ZVAL_STR(&tmp, object->handlers->get_class_name(object));
2520 }
2521 zend_hash_add_new(Z_ARRVAL(stack_frame), ZSTR_KNOWN(ZEND_STR_CLASS), &tmp);
2522 if ((options & DEBUG_BACKTRACE_PROVIDE_OBJECT) != 0) {
2523 ZVAL_OBJ(&tmp, object);
2524 zend_hash_add_new(Z_ARRVAL(stack_frame), ZSTR_KNOWN(ZEND_STR_OBJECT), &tmp);
2525 Z_ADDREF(tmp);
2526 }
2527
2528 ZVAL_INTERNED_STR(&tmp, ZSTR_KNOWN(ZEND_STR_OBJECT_OPERATOR));
2529 zend_hash_add_new(Z_ARRVAL(stack_frame), ZSTR_KNOWN(ZEND_STR_TYPE), &tmp);
2530 } else if (func->common.scope) {
2531 ZVAL_STR_COPY(&tmp, func->common.scope->name);
2532 zend_hash_add_new(Z_ARRVAL(stack_frame), ZSTR_KNOWN(ZEND_STR_CLASS), &tmp);
2533 ZVAL_INTERNED_STR(&tmp, ZSTR_KNOWN(ZEND_STR_PAAMAYIM_NEKUDOTAYIM));
2534 zend_hash_add_new(Z_ARRVAL(stack_frame), ZSTR_KNOWN(ZEND_STR_TYPE), &tmp);
2535 }
2536
2537 if ((options & DEBUG_BACKTRACE_IGNORE_ARGS) == 0 &&
2538 func->type != ZEND_EVAL_CODE) {
2539
2540 debug_backtrace_get_args(call, &tmp);
2541 zend_hash_add_new(Z_ARRVAL(stack_frame), ZSTR_KNOWN(ZEND_STR_ARGS), &tmp);
2542 }
2543 } else {
2544 /* i know this is kinda ugly, but i'm trying to avoid extra cycles in the main execution loop */
2545 zend_bool build_filename_arg = 1;
2546 zend_string *pseudo_function_name;
2547
2548 if (!ptr->func || !ZEND_USER_CODE(ptr->func->common.type) || ptr->opline->opcode != ZEND_INCLUDE_OR_EVAL) {
2549 /* can happen when calling eval from a custom sapi */
2550 pseudo_function_name = ZSTR_KNOWN(ZEND_STR_UNKNOWN);
2551 build_filename_arg = 0;
2552 } else
2553 switch (ptr->opline->extended_value) {
2554 case ZEND_EVAL:
2555 pseudo_function_name = ZSTR_KNOWN(ZEND_STR_EVAL);
2556 build_filename_arg = 0;
2557 break;
2558 case ZEND_INCLUDE:
2559 pseudo_function_name = ZSTR_KNOWN(ZEND_STR_INCLUDE);
2560 break;
2561 case ZEND_REQUIRE:
2562 pseudo_function_name = ZSTR_KNOWN(ZEND_STR_REQUIRE);
2563 break;
2564 case ZEND_INCLUDE_ONCE:
2565 pseudo_function_name = ZSTR_KNOWN(ZEND_STR_INCLUDE_ONCE);
2566 break;
2567 case ZEND_REQUIRE_ONCE:
2568 pseudo_function_name = ZSTR_KNOWN(ZEND_STR_REQUIRE_ONCE);
2569 break;
2570 default:
2571 /* this can actually happen if you use debug_backtrace() in your error_handler and
2572 * you're in the top-scope */
2573 pseudo_function_name = ZSTR_KNOWN(ZEND_STR_UNKNOWN);
2574 build_filename_arg = 0;
2575 break;
2576 }
2577
2578 if (build_filename_arg && include_filename) {
2579 zval arg_array;
2580
2581 array_init(&arg_array);
2582
2583 /* include_filename always points to the last filename of the last last called-function.
2584 if we have called include in the frame above - this is the file we have included.
2585 */
2586
2587 ZVAL_STR_COPY(&tmp, include_filename);
2588 zend_hash_next_index_insert_new(Z_ARRVAL(arg_array), &tmp);
2589 zend_hash_add_new(Z_ARRVAL(stack_frame), ZSTR_KNOWN(ZEND_STR_ARGS), &arg_array);
2590 }
2591
2592 ZVAL_INTERNED_STR(&tmp, pseudo_function_name);
2593 zend_hash_add_new(Z_ARRVAL(stack_frame), ZSTR_KNOWN(ZEND_STR_FUNCTION), &tmp);
2594 }
2595
2596 zend_hash_next_index_insert_new(Z_ARRVAL_P(return_value), &stack_frame);
2597
2598 include_filename = filename;
2599
2600 call = skip;
2601 ptr = skip->prev_execute_data;
2602 }
2603 }
2604 /* }}} */
2605
2606 /* {{{ proto array debug_backtrace([int options[, int limit]])
2607 Return backtrace as array */
ZEND_FUNCTION(debug_backtrace)2608 ZEND_FUNCTION(debug_backtrace)
2609 {
2610 zend_long options = DEBUG_BACKTRACE_PROVIDE_OBJECT;
2611 zend_long limit = 0;
2612
2613 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|ll", &options, &limit) == FAILURE) {
2614 return;
2615 }
2616
2617 zend_fetch_debug_backtrace(return_value, 1, options, limit);
2618 }
2619 /* }}} */
2620
2621 /* {{{ proto bool extension_loaded(string extension_name)
2622 Returns true if the named extension is loaded */
ZEND_FUNCTION(extension_loaded)2623 ZEND_FUNCTION(extension_loaded)
2624 {
2625 zend_string *extension_name;
2626 zend_string *lcname;
2627
2628 if (zend_parse_parameters(ZEND_NUM_ARGS(), "S", &extension_name) == FAILURE) {
2629 return;
2630 }
2631
2632 lcname = zend_string_tolower(extension_name);
2633 if (zend_hash_exists(&module_registry, lcname)) {
2634 RETVAL_TRUE;
2635 } else {
2636 RETVAL_FALSE;
2637 }
2638 zend_string_release_ex(lcname, 0);
2639 }
2640 /* }}} */
2641
2642 /* {{{ proto array get_extension_funcs(string extension_name)
2643 Returns an array with the names of functions belonging to the named extension */
ZEND_FUNCTION(get_extension_funcs)2644 ZEND_FUNCTION(get_extension_funcs)
2645 {
2646 zend_string *extension_name;
2647 zend_string *lcname;
2648 int array;
2649 zend_module_entry *module;
2650 zend_function *zif;
2651
2652 if (zend_parse_parameters(ZEND_NUM_ARGS(), "S", &extension_name) == FAILURE) {
2653 return;
2654 }
2655 if (strncasecmp(ZSTR_VAL(extension_name), "zend", sizeof("zend"))) {
2656 lcname = zend_string_tolower(extension_name);
2657 module = zend_hash_find_ptr(&module_registry, lcname);
2658 zend_string_release_ex(lcname, 0);
2659 } else {
2660 module = zend_hash_str_find_ptr(&module_registry, "core", sizeof("core") - 1);
2661 }
2662
2663 if (!module) {
2664 RETURN_FALSE;
2665 }
2666
2667 if (module->functions) {
2668 /* avoid BC break, if functions list is empty, will return an empty array */
2669 array_init(return_value);
2670 array = 1;
2671 } else {
2672 array = 0;
2673 }
2674
2675 ZEND_HASH_FOREACH_PTR(CG(function_table), zif) {
2676 if (zif->common.type == ZEND_INTERNAL_FUNCTION
2677 && zif->internal_function.module == module) {
2678 if (!array) {
2679 array_init(return_value);
2680 array = 1;
2681 }
2682 add_next_index_str(return_value, zend_string_copy(zif->common.function_name));
2683 }
2684 } ZEND_HASH_FOREACH_END();
2685
2686 if (!array) {
2687 RETURN_FALSE;
2688 }
2689 }
2690 /* }}} */
2691
