Annotation of embedaddon/php/Zend/zend_execute.c, revision 1.1
1.1 ! misho 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.c 321634 2012-01-01 13:15:04Z felipe $ */
! 21:
! 22: #define ZEND_INTENSIVE_DEBUGGING 0
! 23:
! 24: #include <stdio.h>
! 25: #include <signal.h>
! 26:
! 27: #include "zend.h"
! 28: #include "zend_compile.h"
! 29: #include "zend_execute.h"
! 30: #include "zend_API.h"
! 31: #include "zend_ptr_stack.h"
! 32: #include "zend_constants.h"
! 33: #include "zend_extensions.h"
! 34: #include "zend_ini.h"
! 35: #include "zend_exceptions.h"
! 36: #include "zend_interfaces.h"
! 37: #include "zend_closures.h"
! 38: #include "zend_vm.h"
! 39:
! 40: /* Virtual current working directory support */
! 41: #include "tsrm_virtual_cwd.h"
! 42:
! 43: #define _CONST_CODE 0
! 44: #define _TMP_CODE 1
! 45: #define _VAR_CODE 2
! 46: #define _UNUSED_CODE 3
! 47: #define _CV_CODE 4
! 48:
! 49: typedef int (*incdec_t)(zval *);
! 50:
! 51: #define get_zval_ptr(node, Ts, should_free, type) _get_zval_ptr(node, Ts, should_free, type TSRMLS_CC)
! 52: #define get_zval_ptr_ptr(node, Ts, should_free, type) _get_zval_ptr_ptr(node, Ts, should_free, type TSRMLS_CC)
! 53: #define get_obj_zval_ptr(node, Ts, should_free, type) _get_obj_zval_ptr(node, Ts, should_free, type TSRMLS_CC)
! 54: #define get_obj_zval_ptr_ptr(node, Ts, should_free, type) _get_obj_zval_ptr_ptr(node, Ts, should_free, type TSRMLS_CC)
! 55:
! 56: /* Prototypes */
! 57: static void zend_extension_statement_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC);
! 58: static void zend_extension_fcall_begin_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC);
! 59: static void zend_extension_fcall_end_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC);
! 60:
! 61: #define RETURN_VALUE_USED(opline) (!((opline)->result.u.EA.type & EXT_TYPE_UNUSED))
! 62:
! 63: #define EX_T(offset) (*(temp_variable *)((char *) EX(Ts) + offset))
! 64: #define T(offset) (*(temp_variable *)((char *) Ts + offset))
! 65:
! 66: #define TEMP_VAR_STACK_LIMIT 2000
! 67:
! 68: static zend_always_inline void zend_pzval_unlock_func(zval *z, zend_free_op *should_free, int unref TSRMLS_DC)
! 69: {
! 70: if (!Z_DELREF_P(z)) {
! 71: Z_SET_REFCOUNT_P(z, 1);
! 72: Z_UNSET_ISREF_P(z);
! 73: should_free->var = z;
! 74: /* should_free->is_var = 1; */
! 75: } else {
! 76: should_free->var = 0;
! 77: if (unref && Z_ISREF_P(z) && Z_REFCOUNT_P(z) == 1) {
! 78: Z_UNSET_ISREF_P(z);
! 79: }
! 80: GC_ZVAL_CHECK_POSSIBLE_ROOT(z);
! 81: }
! 82: }
! 83:
! 84: static zend_always_inline void zend_pzval_unlock_free_func(zval *z TSRMLS_DC)
! 85: {
! 86: if (!Z_DELREF_P(z)) {
! 87: if (z != &EG(uninitialized_zval)) {
! 88: GC_REMOVE_ZVAL_FROM_BUFFER(z);
! 89: zval_dtor(z);
! 90: efree(z);
! 91: }
! 92: }
! 93: }
! 94:
! 95: #define PZVAL_UNLOCK(z, f) zend_pzval_unlock_func(z, f, 1 TSRMLS_CC)
! 96: #define PZVAL_UNLOCK_EX(z, f, u) zend_pzval_unlock_func(z, f, u TSRMLS_CC)
! 97: #define PZVAL_UNLOCK_FREE(z) zend_pzval_unlock_free_func(z TSRMLS_CC)
! 98: #define PZVAL_LOCK(z) Z_ADDREF_P((z))
! 99: #define RETURN_VALUE_UNUSED(pzn) (((pzn)->u.EA.type & EXT_TYPE_UNUSED))
! 100: #define SELECTIVE_PZVAL_LOCK(pzv, pzn) if (!RETURN_VALUE_UNUSED(pzn)) { PZVAL_LOCK(pzv); }
! 101:
! 102: #define AI_USE_PTR(ai) \
! 103: if ((ai).ptr_ptr) { \
! 104: (ai).ptr = *((ai).ptr_ptr); \
! 105: (ai).ptr_ptr = &((ai).ptr); \
! 106: } else { \
! 107: (ai).ptr = NULL; \
! 108: }
! 109:
! 110: #define AI_SET_PTR(ai, val) \
! 111: (ai).ptr = (val); \
! 112: (ai).ptr_ptr = &((ai).ptr);
! 113:
! 114: #define FREE_OP(should_free) \
! 115: if (should_free.var) { \
! 116: if ((zend_uintptr_t)should_free.var & 1L) { \
! 117: zval_dtor((zval*)((zend_uintptr_t)should_free.var & ~1L)); \
! 118: } else { \
! 119: zval_ptr_dtor(&should_free.var); \
! 120: } \
! 121: }
! 122:
! 123: #define FREE_OP_IF_VAR(should_free) \
! 124: if (should_free.var != NULL && (((zend_uintptr_t)should_free.var & 1L) == 0)) { \
! 125: zval_ptr_dtor(&should_free.var); \
! 126: }
! 127:
! 128: #define FREE_OP_VAR_PTR(should_free) \
! 129: if (should_free.var) { \
! 130: zval_ptr_dtor(&should_free.var); \
! 131: }
! 132:
! 133: #define TMP_FREE(z) (zval*)(((zend_uintptr_t)(z)) | 1L)
! 134:
! 135: #define IS_TMP_FREE(should_free) ((zend_uintptr_t)should_free.var & 1L)
! 136:
! 137: #define INIT_PZVAL_COPY(z,v) \
! 138: (z)->value = (v)->value; \
! 139: Z_TYPE_P(z) = Z_TYPE_P(v); \
! 140: Z_SET_REFCOUNT_P(z, 1); \
! 141: Z_UNSET_ISREF_P(z);
! 142:
! 143: #define MAKE_REAL_ZVAL_PTR(val) \
! 144: do { \
! 145: zval *_tmp; \
! 146: ALLOC_ZVAL(_tmp); \
! 147: _tmp->value = (val)->value; \
! 148: Z_TYPE_P(_tmp) = Z_TYPE_P(val); \
! 149: Z_SET_REFCOUNT_P(_tmp, 1); \
! 150: Z_UNSET_ISREF_P(_tmp); \
! 151: val = _tmp; \
! 152: } while (0)
! 153:
! 154: /* End of zend_execute_locks.h */
! 155:
! 156: #define CV_OF(i) (EG(current_execute_data)->CVs[i])
! 157: #define CV_DEF_OF(i) (EG(active_op_array)->vars[i])
! 158:
! 159: #define CTOR_CALL_BIT 0x1
! 160: #define CTOR_USED_BIT 0x2
! 161:
! 162: #define IS_CTOR_CALL(ce) (((zend_uintptr_t)(ce)) & CTOR_CALL_BIT)
! 163: #define IS_CTOR_USED(ce) (((zend_uintptr_t)(ce)) & CTOR_USED_BIT)
! 164:
! 165: #define ENCODE_CTOR(ce, used) \
! 166: ((zend_class_entry*)(((zend_uintptr_t)(ce)) | CTOR_CALL_BIT | ((used) ? CTOR_USED_BIT : 0)))
! 167: #define DECODE_CTOR(ce) \
! 168: ((zend_class_entry*)(((zend_uintptr_t)(ce)) & ~(CTOR_CALL_BIT|CTOR_USED_BIT)))
! 169:
! 170: ZEND_API zval** zend_get_compiled_variable_value(const zend_execute_data *execute_data_ptr, zend_uint var)
! 171: {
! 172: return execute_data_ptr->CVs[var];
! 173: }
! 174:
! 175: static zend_always_inline zval *_get_zval_ptr_tmp(const znode *node, const temp_variable *Ts, zend_free_op *should_free TSRMLS_DC)
! 176: {
! 177: return should_free->var = &T(node->u.var).tmp_var;
! 178: }
! 179:
! 180: static zval *_get_zval_ptr_var_string_offset(const znode *node, const temp_variable *Ts, zend_free_op *should_free TSRMLS_DC)
! 181: {
! 182: temp_variable *T = &T(node->u.var);
! 183: zval *str = T->str_offset.str;
! 184: zval *ptr;
! 185:
! 186: /* string offset */
! 187: ALLOC_ZVAL(ptr);
! 188: T->str_offset.ptr = ptr;
! 189: should_free->var = ptr;
! 190:
! 191: if (T->str_offset.str->type != IS_STRING
! 192: || ((int)T->str_offset.offset < 0)
! 193: || (T->str_offset.str->value.str.len <= (int)T->str_offset.offset)) {
! 194: ptr->value.str.val = STR_EMPTY_ALLOC();
! 195: ptr->value.str.len = 0;
! 196: } else {
! 197: ptr->value.str.val = estrndup(str->value.str.val + T->str_offset.offset, 1);
! 198: ptr->value.str.len = 1;
! 199: }
! 200: PZVAL_UNLOCK_FREE(str);
! 201: Z_SET_REFCOUNT_P(ptr, 1);
! 202: Z_SET_ISREF_P(ptr);
! 203: ptr->type = IS_STRING;
! 204: return ptr;
! 205: }
! 206:
! 207: static zend_always_inline zval *_get_zval_ptr_var(const znode *node, const temp_variable *Ts, zend_free_op *should_free TSRMLS_DC)
! 208: {
! 209: zval *ptr = T(node->u.var).var.ptr;
! 210: if (EXPECTED(ptr != NULL)) {
! 211: PZVAL_UNLOCK(ptr, should_free);
! 212: return ptr;
! 213: } else {
! 214: return _get_zval_ptr_var_string_offset(node, Ts, should_free TSRMLS_CC);
! 215: }
! 216: }
! 217:
! 218: static zval **_get_zval_cv_lookup(zval ***ptr, zend_uint var, int type TSRMLS_DC)
! 219: {
! 220: zend_compiled_variable *cv = &CV_DEF_OF(var);
! 221:
! 222: if (!EG(active_symbol_table) ||
! 223: zend_hash_quick_find(EG(active_symbol_table), cv->name, cv->name_len+1, cv->hash_value, (void **)ptr)==FAILURE) {
! 224: switch (type) {
! 225: case BP_VAR_R:
! 226: case BP_VAR_UNSET:
! 227: zend_error(E_NOTICE, "Undefined variable: %s", cv->name);
! 228: /* break missing intentionally */
! 229: case BP_VAR_IS:
! 230: return &EG(uninitialized_zval_ptr);
! 231: break;
! 232: case BP_VAR_RW:
! 233: zend_error(E_NOTICE, "Undefined variable: %s", cv->name);
! 234: /* break missing intentionally */
! 235: case BP_VAR_W:
! 236: Z_ADDREF(EG(uninitialized_zval));
! 237: if (!EG(active_symbol_table)) {
! 238: *ptr = (zval**)EG(current_execute_data)->CVs + (EG(active_op_array)->last_var + var);
! 239: **ptr = &EG(uninitialized_zval);
! 240: } else {
! 241: zend_hash_quick_update(EG(active_symbol_table), cv->name, cv->name_len+1, cv->hash_value, &EG(uninitialized_zval_ptr), sizeof(zval *), (void **)ptr);
! 242: }
! 243: break;
! 244: }
! 245: }
! 246: return *ptr;
! 247: }
! 248:
! 249: static zend_always_inline zval *_get_zval_ptr_cv(const znode *node, const temp_variable *Ts, int type TSRMLS_DC)
! 250: {
! 251: zval ***ptr = &CV_OF(node->u.var);
! 252:
! 253: if (UNEXPECTED(*ptr == NULL)) {
! 254: return *_get_zval_cv_lookup(ptr, node->u.var, type TSRMLS_CC);
! 255: }
! 256: return **ptr;
! 257: }
! 258:
! 259: static inline zval *_get_zval_ptr(znode *node, const temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC)
! 260: {
! 261: /* should_free->is_var = 0; */
! 262: switch (node->op_type) {
! 263: case IS_CONST:
! 264: should_free->var = 0;
! 265: return &node->u.constant;
! 266: break;
! 267: case IS_TMP_VAR:
! 268: should_free->var = TMP_FREE(&T(node->u.var).tmp_var);
! 269: return &T(node->u.var).tmp_var;
! 270: break;
! 271: case IS_VAR:
! 272: return _get_zval_ptr_var(node, Ts, should_free TSRMLS_CC);
! 273: break;
! 274: case IS_UNUSED:
! 275: should_free->var = 0;
! 276: return NULL;
! 277: break;
! 278: case IS_CV:
! 279: should_free->var = 0;
! 280: return _get_zval_ptr_cv(node, Ts, type TSRMLS_CC);
! 281: break;
! 282: EMPTY_SWITCH_DEFAULT_CASE()
! 283: }
! 284: return NULL;
! 285: }
! 286:
! 287: static zend_always_inline zval **_get_zval_ptr_ptr_var(const znode *node, const temp_variable *Ts, zend_free_op *should_free TSRMLS_DC)
! 288: {
! 289: zval** ptr_ptr = T(node->u.var).var.ptr_ptr;
! 290:
! 291: if (EXPECTED(ptr_ptr != NULL)) {
! 292: PZVAL_UNLOCK(*ptr_ptr, should_free);
! 293: } else {
! 294: /* string offset */
! 295: PZVAL_UNLOCK(T(node->u.var).str_offset.str, should_free);
! 296: }
! 297: return ptr_ptr;
! 298: }
! 299:
! 300: static zend_always_inline zval **_get_zval_ptr_ptr_cv(const znode *node, const temp_variable *Ts, int type TSRMLS_DC)
! 301: {
! 302: zval ***ptr = &CV_OF(node->u.var);
! 303:
! 304: if (UNEXPECTED(*ptr == NULL)) {
! 305: return _get_zval_cv_lookup(ptr, node->u.var, type TSRMLS_CC);
! 306: }
! 307: return *ptr;
! 308: }
! 309:
! 310: static inline zval **_get_zval_ptr_ptr(const znode *node, const temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC)
! 311: {
! 312: if (node->op_type == IS_CV) {
! 313: should_free->var = 0;
! 314: return _get_zval_ptr_ptr_cv(node, Ts, type TSRMLS_CC);
! 315: } else if (node->op_type == IS_VAR) {
! 316: return _get_zval_ptr_ptr_var(node, Ts, should_free TSRMLS_CC);
! 317: } else {
! 318: should_free->var = 0;
! 319: return NULL;
! 320: }
! 321: }
! 322:
! 323: static zend_always_inline zval *_get_obj_zval_ptr_unused(TSRMLS_D)
! 324: {
! 325: if (EXPECTED(EG(This) != NULL)) {
! 326: return EG(This);
! 327: } else {
! 328: zend_error_noreturn(E_ERROR, "Using $this when not in object context");
! 329: return NULL;
! 330: }
! 331: }
! 332:
! 333: static inline zval **_get_obj_zval_ptr_ptr(const znode *op, const temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC)
! 334: {
! 335: if (op->op_type == IS_UNUSED) {
! 336: if (EXPECTED(EG(This) != NULL)) {
! 337: /* this should actually never be modified, _ptr_ptr is modified only when
! 338: the object is empty */
! 339: should_free->var = 0;
! 340: return &EG(This);
! 341: } else {
! 342: zend_error_noreturn(E_ERROR, "Using $this when not in object context");
! 343: }
! 344: }
! 345: return get_zval_ptr_ptr(op, Ts, should_free, type);
! 346: }
! 347:
! 348: static zend_always_inline zval **_get_obj_zval_ptr_ptr_unused(TSRMLS_D)
! 349: {
! 350: if (EXPECTED(EG(This) != NULL)) {
! 351: return &EG(This);
! 352: } else {
! 353: zend_error_noreturn(E_ERROR, "Using $this when not in object context");
! 354: return NULL;
! 355: }
! 356: }
! 357:
! 358: static inline zval *_get_obj_zval_ptr(znode *op, const temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC)
! 359: {
! 360: if (op->op_type == IS_UNUSED) {
! 361: if (EXPECTED(EG(This) != NULL)) {
! 362: should_free->var = 0;
! 363: return EG(This);
! 364: } else {
! 365: zend_error_noreturn(E_ERROR, "Using $this when not in object context");
! 366: }
! 367: }
! 368: return get_zval_ptr(op, Ts, should_free, type);
! 369: }
! 370:
! 371: static inline void zend_switch_free(temp_variable *T, int extended_value TSRMLS_DC)
! 372: {
! 373: if (T->var.ptr) {
! 374: if (extended_value & ZEND_FE_RESET_VARIABLE) { /* foreach() free */
! 375: Z_DELREF_P(T->var.ptr);
! 376: }
! 377: zval_ptr_dtor(&T->var.ptr);
! 378: } else if (!T->var.ptr_ptr) {
! 379: /* perform the equivalent of equivalent of a
! 380: * quick & silent get_zval_ptr, and FREE_OP
! 381: */
! 382: PZVAL_UNLOCK_FREE(T->str_offset.str);
! 383: }
! 384: }
! 385:
! 386: static void zend_assign_to_variable_reference(zval **variable_ptr_ptr, zval **value_ptr_ptr TSRMLS_DC)
! 387: {
! 388: zval *variable_ptr = *variable_ptr_ptr;
! 389: zval *value_ptr = *value_ptr_ptr;
! 390:
! 391: if (variable_ptr == EG(error_zval_ptr) || value_ptr==EG(error_zval_ptr)) {
! 392: variable_ptr_ptr = &EG(uninitialized_zval_ptr);
! 393: } else if (variable_ptr != value_ptr) {
! 394: if (!PZVAL_IS_REF(value_ptr)) {
! 395: /* break it away */
! 396: Z_DELREF_P(value_ptr);
! 397: if (Z_REFCOUNT_P(value_ptr)>0) {
! 398: ALLOC_ZVAL(*value_ptr_ptr);
! 399: **value_ptr_ptr = *value_ptr;
! 400: value_ptr = *value_ptr_ptr;
! 401: zendi_zval_copy_ctor(*value_ptr);
! 402: }
! 403: Z_SET_REFCOUNT_P(value_ptr, 1);
! 404: Z_SET_ISREF_P(value_ptr);
! 405: }
! 406:
! 407: *variable_ptr_ptr = value_ptr;
! 408: Z_ADDREF_P(value_ptr);
! 409:
! 410: zval_ptr_dtor(&variable_ptr);
! 411: } else if (!Z_ISREF_P(variable_ptr)) {
! 412: if (variable_ptr_ptr == value_ptr_ptr) {
! 413: SEPARATE_ZVAL(variable_ptr_ptr);
! 414: } else if (variable_ptr==EG(uninitialized_zval_ptr)
! 415: || Z_REFCOUNT_P(variable_ptr)>2) {
! 416: /* we need to separate */
! 417: Z_SET_REFCOUNT_P(variable_ptr, Z_REFCOUNT_P(variable_ptr) - 2);
! 418: ALLOC_ZVAL(*variable_ptr_ptr);
! 419: **variable_ptr_ptr = *variable_ptr;
! 420: zval_copy_ctor(*variable_ptr_ptr);
! 421: *value_ptr_ptr = *variable_ptr_ptr;
! 422: Z_SET_REFCOUNT_PP(variable_ptr_ptr, 2);
! 423: }
! 424: Z_SET_ISREF_PP(variable_ptr_ptr);
! 425: }
! 426: }
! 427:
! 428: /* this should modify object only if it's empty */
! 429: static inline void make_real_object(zval **object_ptr TSRMLS_DC)
! 430: {
! 431: if (Z_TYPE_PP(object_ptr) == IS_NULL
! 432: || (Z_TYPE_PP(object_ptr) == IS_BOOL && Z_LVAL_PP(object_ptr) == 0)
! 433: || (Z_TYPE_PP(object_ptr) == IS_STRING && Z_STRLEN_PP(object_ptr) == 0)
! 434: ) {
! 435: zend_error(E_STRICT, "Creating default object from empty value");
! 436:
! 437: SEPARATE_ZVAL_IF_NOT_REF(object_ptr);
! 438: zval_dtor(*object_ptr);
! 439: object_init(*object_ptr);
! 440: }
! 441: }
! 442:
! 443: static inline char * zend_verify_arg_class_kind(const zend_arg_info *cur_arg_info, ulong fetch_type, const char **class_name, zend_class_entry **pce TSRMLS_DC)
! 444: {
! 445: *pce = zend_fetch_class(cur_arg_info->class_name, cur_arg_info->class_name_len, (fetch_type | ZEND_FETCH_CLASS_AUTO | ZEND_FETCH_CLASS_NO_AUTOLOAD) TSRMLS_CC);
! 446:
! 447: *class_name = (*pce) ? (*pce)->name: cur_arg_info->class_name;
! 448: if (*pce && (*pce)->ce_flags & ZEND_ACC_INTERFACE) {
! 449: return "implement interface ";
! 450: } else {
! 451: return "be an instance of ";
! 452: }
! 453: }
! 454:
! 455: static inline int zend_verify_arg_error(const zend_function *zf, zend_uint arg_num, const zend_arg_info *cur_arg_info, const char *need_msg, const char *need_kind, const char *given_msg, char *given_kind TSRMLS_DC)
! 456: {
! 457: zend_execute_data *ptr = EG(current_execute_data)->prev_execute_data;
! 458: char *fname = zf->common.function_name;
! 459: char *fsep;
! 460: char *fclass;
! 461:
! 462: if (zf->common.scope) {
! 463: fsep = "::";
! 464: fclass = zf->common.scope->name;
! 465: } else {
! 466: fsep = "";
! 467: fclass = "";
! 468: }
! 469:
! 470: if (ptr && ptr->op_array) {
! 471: zend_error(E_RECOVERABLE_ERROR, "Argument %d passed to %s%s%s() must %s%s, %s%s given, called in %s on line %d and defined", arg_num, fclass, fsep, fname, need_msg, need_kind, given_msg, given_kind, ptr->op_array->filename, ptr->opline->lineno);
! 472: } else {
! 473: zend_error(E_RECOVERABLE_ERROR, "Argument %d passed to %s%s%s() must %s%s, %s%s given", arg_num, fclass, fsep, fname, need_msg, need_kind, given_msg, given_kind);
! 474: }
! 475: return 0;
! 476: }
! 477:
! 478: static inline int zend_verify_arg_type(zend_function *zf, zend_uint arg_num, zval *arg, ulong fetch_type TSRMLS_DC)
! 479: {
! 480: zend_arg_info *cur_arg_info;
! 481: char *need_msg;
! 482: zend_class_entry *ce;
! 483:
! 484: if (!zf->common.arg_info
! 485: || arg_num>zf->common.num_args) {
! 486: return 1;
! 487: }
! 488:
! 489: cur_arg_info = &zf->common.arg_info[arg_num-1];
! 490:
! 491: if (cur_arg_info->class_name) {
! 492: const char *class_name;
! 493:
! 494: if (!arg) {
! 495: need_msg = zend_verify_arg_class_kind(cur_arg_info, fetch_type, &class_name, &ce TSRMLS_CC);
! 496: return zend_verify_arg_error(zf, arg_num, cur_arg_info, need_msg, class_name, "none", "" TSRMLS_CC);
! 497: }
! 498: if (Z_TYPE_P(arg) == IS_OBJECT) {
! 499: need_msg = zend_verify_arg_class_kind(cur_arg_info, fetch_type, &class_name, &ce TSRMLS_CC);
! 500: if (!ce || !instanceof_function(Z_OBJCE_P(arg), ce TSRMLS_CC)) {
! 501: return zend_verify_arg_error(zf, arg_num, cur_arg_info, need_msg, class_name, "instance of ", Z_OBJCE_P(arg)->name TSRMLS_CC);
! 502: }
! 503: } else if (Z_TYPE_P(arg) != IS_NULL || !cur_arg_info->allow_null) {
! 504: need_msg = zend_verify_arg_class_kind(cur_arg_info, fetch_type, &class_name, &ce TSRMLS_CC);
! 505: return zend_verify_arg_error(zf, arg_num, cur_arg_info, need_msg, class_name, zend_zval_type_name(arg), "" TSRMLS_CC);
! 506: }
! 507: } else if (cur_arg_info->array_type_hint) {
! 508: if (!arg) {
! 509: return zend_verify_arg_error(zf, arg_num, cur_arg_info, "be an array", "", "none", "" TSRMLS_CC);
! 510: }
! 511: if (Z_TYPE_P(arg) != IS_ARRAY && (Z_TYPE_P(arg) != IS_NULL || !cur_arg_info->allow_null)) {
! 512: return zend_verify_arg_error(zf, arg_num, cur_arg_info, "be an array", "", zend_zval_type_name(arg), "" TSRMLS_CC);
! 513: }
! 514: }
! 515: return 1;
! 516: }
! 517:
! 518: static inline void zend_assign_to_object(znode *result, zval **object_ptr, zval *property_name, znode *value_op, const temp_variable *Ts, int opcode TSRMLS_DC)
! 519:
! 520: {
! 521: zval *object = *object_ptr;
! 522: zend_free_op free_value;
! 523: zval *value = get_zval_ptr(value_op, Ts, &free_value, BP_VAR_R);
! 524: zval **retval = &T(result->u.var).var.ptr;
! 525:
! 526: if (Z_TYPE_P(object) != IS_OBJECT) {
! 527: if (object == EG(error_zval_ptr)) {
! 528: if (!RETURN_VALUE_UNUSED(result)) {
! 529: *retval = EG(uninitialized_zval_ptr);
! 530: PZVAL_LOCK(*retval);
! 531: }
! 532: FREE_OP(free_value);
! 533: return;
! 534: }
! 535: if (Z_TYPE_P(object) == IS_NULL ||
! 536: (Z_TYPE_P(object) == IS_BOOL && Z_LVAL_P(object) == 0) ||
! 537: (Z_TYPE_P(object) == IS_STRING && Z_STRLEN_P(object) == 0)) {
! 538: SEPARATE_ZVAL_IF_NOT_REF(object_ptr);
! 539: object = *object_ptr;
! 540: Z_ADDREF_P(object);
! 541: zend_error(E_STRICT, "Creating default object from empty value");
! 542: if (Z_REFCOUNT_P(object) == 1) {
! 543: /* object was removed by error handler, nothing to assign to */
! 544: zval_ptr_dtor(&object);
! 545: if (retval) {
! 546: *retval = &EG(uninitialized_zval);
! 547: PZVAL_LOCK(*retval);
! 548: }
! 549: FREE_OP(free_value);
! 550: return;
! 551: }
! 552: Z_DELREF_P(object);
! 553: zval_dtor(object);
! 554: object_init(object);
! 555: } else {
! 556: zend_error(E_WARNING, "Attempt to assign property of non-object");
! 557: if (!RETURN_VALUE_UNUSED(result)) {
! 558: *retval = EG(uninitialized_zval_ptr);
! 559: PZVAL_LOCK(*retval);
! 560: }
! 561: FREE_OP(free_value);
! 562: return;
! 563: }
! 564: }
! 565:
! 566: /* separate our value if necessary */
! 567: if (value_op->op_type == IS_TMP_VAR) {
! 568: zval *orig_value = value;
! 569:
! 570: ALLOC_ZVAL(value);
! 571: *value = *orig_value;
! 572: Z_UNSET_ISREF_P(value);
! 573: Z_SET_REFCOUNT_P(value, 0);
! 574: } else if (value_op->op_type == IS_CONST) {
! 575: zval *orig_value = value;
! 576:
! 577: ALLOC_ZVAL(value);
! 578: *value = *orig_value;
! 579: Z_UNSET_ISREF_P(value);
! 580: Z_SET_REFCOUNT_P(value, 0);
! 581: zval_copy_ctor(value);
! 582: }
! 583:
! 584:
! 585: Z_ADDREF_P(value);
! 586: if (opcode == ZEND_ASSIGN_OBJ) {
! 587: if (!Z_OBJ_HT_P(object)->write_property) {
! 588: zend_error(E_WARNING, "Attempt to assign property of non-object");
! 589: if (!RETURN_VALUE_UNUSED(result)) {
! 590: *retval = EG(uninitialized_zval_ptr);
! 591: PZVAL_LOCK(*retval);
! 592: }
! 593: if (value_op->op_type == IS_TMP_VAR) {
! 594: FREE_ZVAL(value);
! 595: } else if (value_op->op_type == IS_CONST) {
! 596: zval_ptr_dtor(&value);
! 597: }
! 598: FREE_OP(free_value);
! 599: return;
! 600: }
! 601: Z_OBJ_HT_P(object)->write_property(object, property_name, value TSRMLS_CC);
! 602: } else {
! 603: /* Note: property_name in this case is really the array index! */
! 604: if (!Z_OBJ_HT_P(object)->write_dimension) {
! 605: zend_error_noreturn(E_ERROR, "Cannot use object as array");
! 606: }
! 607: Z_OBJ_HT_P(object)->write_dimension(object, property_name, value TSRMLS_CC);
! 608: }
! 609:
! 610: if (!RETURN_VALUE_UNUSED(result) && !EG(exception)) {
! 611: AI_SET_PTR(T(result->u.var).var, value);
! 612: PZVAL_LOCK(value);
! 613: }
! 614: zval_ptr_dtor(&value);
! 615: FREE_OP_IF_VAR(free_value);
! 616: }
! 617:
! 618: static inline int zend_assign_to_string_offset(const temp_variable *T, const zval *value, int value_type TSRMLS_DC)
! 619: {
! 620: if (Z_TYPE_P(T->str_offset.str) == IS_STRING) {
! 621:
! 622: if (((int)T->str_offset.offset < 0)) {
! 623: zend_error(E_WARNING, "Illegal string offset: %d", T->str_offset.offset);
! 624: return 0;
! 625: }
! 626:
! 627: if (T->str_offset.offset >= Z_STRLEN_P(T->str_offset.str)) {
! 628: Z_STRVAL_P(T->str_offset.str) = (char *) erealloc(Z_STRVAL_P(T->str_offset.str), T->str_offset.offset+1+1);
! 629: memset(Z_STRVAL_P(T->str_offset.str) + Z_STRLEN_P(T->str_offset.str),
! 630: ' ',
! 631: T->str_offset.offset - Z_STRLEN_P(T->str_offset.str));
! 632: Z_STRVAL_P(T->str_offset.str)[T->str_offset.offset+1] = 0;
! 633: Z_STRLEN_P(T->str_offset.str) = T->str_offset.offset+1;
! 634: }
! 635:
! 636: if (Z_TYPE_P(value) != IS_STRING) {
! 637: zval tmp = *value;
! 638:
! 639: if (value_type != IS_TMP_VAR) {
! 640: zval_copy_ctor(&tmp);
! 641: }
! 642: convert_to_string(&tmp);
! 643: Z_STRVAL_P(T->str_offset.str)[T->str_offset.offset] = Z_STRVAL(tmp)[0];
! 644: STR_FREE(Z_STRVAL(tmp));
! 645: } else {
! 646: Z_STRVAL_P(T->str_offset.str)[T->str_offset.offset] = Z_STRVAL_P(value)[0];
! 647: if (value_type == IS_TMP_VAR) {
! 648: /* we can safely free final_value here
! 649: * because separation is done only
! 650: * in case value_type == IS_VAR */
! 651: STR_FREE(Z_STRVAL_P(value));
! 652: }
! 653: }
! 654: /*
! 655: * the value of an assignment to a string offset is undefined
! 656: T(result->u.var).var = &T->str_offset.str;
! 657: */
! 658: }
! 659: return 1;
! 660: }
! 661:
! 662: static inline zval* zend_assign_to_variable(zval **variable_ptr_ptr, zval *value, int is_tmp_var TSRMLS_DC)
! 663: {
! 664: zval *variable_ptr = *variable_ptr_ptr;
! 665: zval garbage;
! 666:
! 667: if (variable_ptr == EG(error_zval_ptr)) {
! 668: if (is_tmp_var) {
! 669: zval_dtor(value);
! 670: }
! 671: return EG(uninitialized_zval_ptr);
! 672: }
! 673:
! 674: if (Z_TYPE_P(variable_ptr) == IS_OBJECT && Z_OBJ_HANDLER_P(variable_ptr, set)) {
! 675: Z_OBJ_HANDLER_P(variable_ptr, set)(variable_ptr_ptr, value TSRMLS_CC);
! 676: return variable_ptr;
! 677: }
! 678:
! 679: if (PZVAL_IS_REF(variable_ptr)) {
! 680: if (variable_ptr!=value) {
! 681: zend_uint refcount = Z_REFCOUNT_P(variable_ptr);
! 682:
! 683: garbage = *variable_ptr;
! 684: *variable_ptr = *value;
! 685: Z_SET_REFCOUNT_P(variable_ptr, refcount);
! 686: Z_SET_ISREF_P(variable_ptr);
! 687: if (!is_tmp_var) {
! 688: zendi_zval_copy_ctor(*variable_ptr);
! 689: }
! 690: zendi_zval_dtor(garbage);
! 691: return variable_ptr;
! 692: }
! 693: } else {
! 694: if (Z_DELREF_P(variable_ptr)==0) {
! 695: if (!is_tmp_var) {
! 696: if (variable_ptr==value) {
! 697: Z_ADDREF_P(variable_ptr);
! 698: } else if (PZVAL_IS_REF(value)) {
! 699: garbage = *variable_ptr;
! 700: *variable_ptr = *value;
! 701: INIT_PZVAL(variable_ptr);
! 702: zval_copy_ctor(variable_ptr);
! 703: zendi_zval_dtor(garbage);
! 704: return variable_ptr;
! 705: } else {
! 706: Z_ADDREF_P(value);
! 707: *variable_ptr_ptr = value;
! 708: if (variable_ptr != &EG(uninitialized_zval)) {
! 709: GC_REMOVE_ZVAL_FROM_BUFFER(variable_ptr);
! 710: zval_dtor(variable_ptr);
! 711: efree(variable_ptr);
! 712: }
! 713: return value;
! 714: }
! 715: } else {
! 716: garbage = *variable_ptr;
! 717: *variable_ptr = *value;
! 718: INIT_PZVAL(variable_ptr);
! 719: zendi_zval_dtor(garbage);
! 720: return variable_ptr;
! 721: }
! 722: } else { /* we need to split */
! 723: GC_ZVAL_CHECK_POSSIBLE_ROOT(*variable_ptr_ptr);
! 724: if (!is_tmp_var) {
! 725: if (PZVAL_IS_REF(value) && Z_REFCOUNT_P(value) > 0) {
! 726: ALLOC_ZVAL(variable_ptr);
! 727: *variable_ptr_ptr = variable_ptr;
! 728: *variable_ptr = *value;
! 729: Z_SET_REFCOUNT_P(variable_ptr, 1);
! 730: zval_copy_ctor(variable_ptr);
! 731: } else {
! 732: *variable_ptr_ptr = value;
! 733: Z_ADDREF_P(value);
! 734: }
! 735: } else {
! 736: ALLOC_ZVAL(*variable_ptr_ptr);
! 737: Z_SET_REFCOUNT_P(value, 1);
! 738: **variable_ptr_ptr = *value;
! 739: }
! 740: }
! 741: Z_UNSET_ISREF_PP(variable_ptr_ptr);
! 742: }
! 743:
! 744: return *variable_ptr_ptr;
! 745: }
! 746:
! 747:
! 748: /* Utility Functions for Extensions */
! 749: static void zend_extension_statement_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
! 750: {
! 751: if (extension->statement_handler) {
! 752: extension->statement_handler(op_array);
! 753: }
! 754: }
! 755:
! 756:
! 757: static void zend_extension_fcall_begin_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
! 758: {
! 759: if (extension->fcall_begin_handler) {
! 760: extension->fcall_begin_handler(op_array);
! 761: }
! 762: }
! 763:
! 764:
! 765: static void zend_extension_fcall_end_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
! 766: {
! 767: if (extension->fcall_end_handler) {
! 768: extension->fcall_end_handler(op_array);
! 769: }
! 770: }
! 771:
! 772:
! 773: static inline HashTable *zend_get_target_symbol_table(const zend_op *opline, const temp_variable *Ts, int type, const zval *variable TSRMLS_DC)
! 774: {
! 775: switch (opline->op2.u.EA.type) {
! 776: case ZEND_FETCH_LOCAL:
! 777: if (!EG(active_symbol_table)) {
! 778: zend_rebuild_symbol_table(TSRMLS_C);
! 779: }
! 780: return EG(active_symbol_table);
! 781: break;
! 782: case ZEND_FETCH_GLOBAL:
! 783: case ZEND_FETCH_GLOBAL_LOCK:
! 784: return &EG(symbol_table);
! 785: break;
! 786: case ZEND_FETCH_STATIC:
! 787: if (!EG(active_op_array)->static_variables) {
! 788: ALLOC_HASHTABLE(EG(active_op_array)->static_variables);
! 789: zend_hash_init(EG(active_op_array)->static_variables, 2, NULL, ZVAL_PTR_DTOR, 0);
! 790: }
! 791: return EG(active_op_array)->static_variables;
! 792: break;
! 793: EMPTY_SWITCH_DEFAULT_CASE()
! 794: }
! 795: return NULL;
! 796: }
! 797:
! 798: static inline zval **zend_fetch_dimension_address_inner(HashTable *ht, const zval *dim, int type TSRMLS_DC)
! 799: {
! 800: zval **retval;
! 801: char *offset_key;
! 802: int offset_key_length;
! 803: long index;
! 804:
! 805: switch (dim->type) {
! 806: case IS_NULL:
! 807: offset_key = "";
! 808: offset_key_length = 0;
! 809: goto fetch_string_dim;
! 810:
! 811: case IS_STRING:
! 812:
! 813: offset_key = dim->value.str.val;
! 814: offset_key_length = dim->value.str.len;
! 815:
! 816: fetch_string_dim:
! 817: if (zend_symtable_find(ht, offset_key, offset_key_length+1, (void **) &retval) == FAILURE) {
! 818: switch (type) {
! 819: case BP_VAR_R:
! 820: zend_error(E_NOTICE, "Undefined index: %s", offset_key);
! 821: /* break missing intentionally */
! 822: case BP_VAR_UNSET:
! 823: case BP_VAR_IS:
! 824: retval = &EG(uninitialized_zval_ptr);
! 825: break;
! 826: case BP_VAR_RW:
! 827: zend_error(E_NOTICE,"Undefined index: %s", offset_key);
! 828: /* break missing intentionally */
! 829: case BP_VAR_W: {
! 830: zval *new_zval = &EG(uninitialized_zval);
! 831:
! 832: Z_ADDREF_P(new_zval);
! 833: zend_symtable_update(ht, offset_key, offset_key_length+1, &new_zval, sizeof(zval *), (void **) &retval);
! 834: }
! 835: break;
! 836: }
! 837: }
! 838: break;
! 839: case IS_DOUBLE:
! 840: index = zend_dval_to_lval(Z_DVAL_P(dim));
! 841: goto num_index;
! 842: case IS_RESOURCE:
! 843: zend_error(E_STRICT, "Resource ID#%ld used as offset, casting to integer (%ld)", Z_LVAL_P(dim), Z_LVAL_P(dim));
! 844: /* Fall Through */
! 845: case IS_BOOL:
! 846: case IS_LONG:
! 847: index = Z_LVAL_P(dim);
! 848: num_index:
! 849: if (zend_hash_index_find(ht, index, (void **) &retval) == FAILURE) {
! 850: switch (type) {
! 851: case BP_VAR_R:
! 852: zend_error(E_NOTICE,"Undefined offset: %ld", index);
! 853: /* break missing intentionally */
! 854: case BP_VAR_UNSET:
! 855: case BP_VAR_IS:
! 856: retval = &EG(uninitialized_zval_ptr);
! 857: break;
! 858: case BP_VAR_RW:
! 859: zend_error(E_NOTICE,"Undefined offset: %ld", index);
! 860: /* break missing intentionally */
! 861: case BP_VAR_W: {
! 862: zval *new_zval = &EG(uninitialized_zval);
! 863:
! 864: Z_ADDREF_P(new_zval);
! 865: zend_hash_index_update(ht, index, &new_zval, sizeof(zval *), (void **) &retval);
! 866: }
! 867: break;
! 868: }
! 869: }
! 870: break;
! 871:
! 872: default:
! 873: zend_error(E_WARNING, "Illegal offset type");
! 874: return (type == BP_VAR_W || type == BP_VAR_RW) ?
! 875: &EG(error_zval_ptr) : &EG(uninitialized_zval_ptr);
! 876: }
! 877: return retval;
! 878: }
! 879:
! 880: static void zend_fetch_dimension_address(temp_variable *result, zval **container_ptr, zval *dim, int dim_is_tmp_var, int type TSRMLS_DC)
! 881: {
! 882: zval *container = *container_ptr;
! 883: zval **retval;
! 884:
! 885: switch (Z_TYPE_P(container)) {
! 886:
! 887: case IS_ARRAY:
! 888: if (type != BP_VAR_UNSET && Z_REFCOUNT_P(container)>1 && !PZVAL_IS_REF(container)) {
! 889: SEPARATE_ZVAL(container_ptr);
! 890: container = *container_ptr;
! 891: }
! 892: fetch_from_array:
! 893: if (dim == NULL) {
! 894: zval *new_zval = &EG(uninitialized_zval);
! 895:
! 896: Z_ADDREF_P(new_zval);
! 897: if (zend_hash_next_index_insert(Z_ARRVAL_P(container), &new_zval, sizeof(zval *), (void **) &retval) == FAILURE) {
! 898: zend_error(E_WARNING, "Cannot add element to the array as the next element is already occupied");
! 899: retval = &EG(error_zval_ptr);
! 900: Z_DELREF_P(new_zval);
! 901: }
! 902: } else {
! 903: retval = zend_fetch_dimension_address_inner(Z_ARRVAL_P(container), dim, type TSRMLS_CC);
! 904: }
! 905: result->var.ptr_ptr = retval;
! 906: PZVAL_LOCK(*retval);
! 907: return;
! 908: break;
! 909:
! 910: case IS_NULL:
! 911: if (container == EG(error_zval_ptr)) {
! 912: result->var.ptr_ptr = &EG(error_zval_ptr);
! 913: PZVAL_LOCK(EG(error_zval_ptr));
! 914: } else if (type != BP_VAR_UNSET) {
! 915: convert_to_array:
! 916: if (!PZVAL_IS_REF(container)) {
! 917: SEPARATE_ZVAL(container_ptr);
! 918: container = *container_ptr;
! 919: }
! 920: zval_dtor(container);
! 921: array_init(container);
! 922: goto fetch_from_array;
! 923: } else {
! 924: /* for read-mode only */
! 925: result->var.ptr_ptr = &EG(uninitialized_zval_ptr);
! 926: PZVAL_LOCK(EG(uninitialized_zval_ptr));
! 927: }
! 928: return;
! 929: break;
! 930:
! 931: case IS_STRING: {
! 932: zval tmp;
! 933:
! 934: if (type != BP_VAR_UNSET && Z_STRLEN_P(container)==0) {
! 935: goto convert_to_array;
! 936: }
! 937: if (dim == NULL) {
! 938: zend_error_noreturn(E_ERROR, "[] operator not supported for strings");
! 939: }
! 940:
! 941: if (Z_TYPE_P(dim) != IS_LONG) {
! 942: switch(Z_TYPE_P(dim)) {
! 943: /* case IS_LONG: */
! 944: case IS_STRING:
! 945: case IS_DOUBLE:
! 946: case IS_NULL:
! 947: case IS_BOOL:
! 948: /* do nothing */
! 949: break;
! 950: default:
! 951: zend_error(E_WARNING, "Illegal offset type");
! 952: break;
! 953: }
! 954:
! 955: tmp = *dim;
! 956: zval_copy_ctor(&tmp);
! 957: convert_to_long(&tmp);
! 958: dim = &tmp;
! 959: }
! 960: if (type != BP_VAR_UNSET) {
! 961: SEPARATE_ZVAL_IF_NOT_REF(container_ptr);
! 962: }
! 963: container = *container_ptr;
! 964: result->str_offset.str = container;
! 965: PZVAL_LOCK(container);
! 966: result->str_offset.offset = Z_LVAL_P(dim);
! 967: result->var.ptr_ptr = NULL;
! 968: result->var.ptr = NULL;
! 969: return;
! 970: }
! 971: break;
! 972:
! 973: case IS_OBJECT:
! 974: if (!Z_OBJ_HT_P(container)->read_dimension) {
! 975: zend_error_noreturn(E_ERROR, "Cannot use object as array");
! 976: } else {
! 977: zval *overloaded_result;
! 978:
! 979: if (dim_is_tmp_var) {
! 980: zval *orig = dim;
! 981: MAKE_REAL_ZVAL_PTR(dim);
! 982: ZVAL_NULL(orig);
! 983: }
! 984: overloaded_result = Z_OBJ_HT_P(container)->read_dimension(container, dim, type TSRMLS_CC);
! 985:
! 986: if (overloaded_result) {
! 987: if (!Z_ISREF_P(overloaded_result)) {
! 988: if (Z_REFCOUNT_P(overloaded_result) > 0) {
! 989: zval *tmp = overloaded_result;
! 990:
! 991: ALLOC_ZVAL(overloaded_result);
! 992: *overloaded_result = *tmp;
! 993: zval_copy_ctor(overloaded_result);
! 994: Z_UNSET_ISREF_P(overloaded_result);
! 995: Z_SET_REFCOUNT_P(overloaded_result, 0);
! 996: }
! 997: if (Z_TYPE_P(overloaded_result) != IS_OBJECT) {
! 998: zend_class_entry *ce = Z_OBJCE_P(container);
! 999: zend_error(E_NOTICE, "Indirect modification of overloaded element of %s has no effect", ce->name);
! 1000: }
! 1001: }
! 1002: retval = &overloaded_result;
! 1003: } else {
! 1004: retval = &EG(error_zval_ptr);
! 1005: }
! 1006: AI_SET_PTR(result->var, *retval);
! 1007: PZVAL_LOCK(*retval);
! 1008: if (dim_is_tmp_var) {
! 1009: zval_ptr_dtor(&dim);
! 1010: }
! 1011: }
! 1012: return;
! 1013: break;
! 1014:
! 1015: case IS_BOOL:
! 1016: if (type != BP_VAR_UNSET && Z_LVAL_P(container)==0) {
! 1017: goto convert_to_array;
! 1018: }
! 1019: /* break missing intentionally */
! 1020:
! 1021: default:
! 1022: if (type == BP_VAR_UNSET) {
! 1023: zend_error(E_WARNING, "Cannot unset offset in a non-array variable");
! 1024: AI_SET_PTR(result->var, EG(uninitialized_zval_ptr));
! 1025: PZVAL_LOCK(EG(uninitialized_zval_ptr));
! 1026: } else {
! 1027: zend_error(E_WARNING, "Cannot use a scalar value as an array");
! 1028: result->var.ptr_ptr = &EG(error_zval_ptr);
! 1029: PZVAL_LOCK(EG(error_zval_ptr));
! 1030: }
! 1031: break;
! 1032: }
! 1033: }
! 1034:
! 1035: static void zend_fetch_dimension_address_read(temp_variable *result, zval **container_ptr, zval *dim, int dim_is_tmp_var, int type TSRMLS_DC)
! 1036: {
! 1037: zval *container = *container_ptr;
! 1038: zval **retval;
! 1039:
! 1040: switch (Z_TYPE_P(container)) {
! 1041:
! 1042: case IS_ARRAY:
! 1043: retval = zend_fetch_dimension_address_inner(Z_ARRVAL_P(container), dim, type TSRMLS_CC);
! 1044: if (result) {
! 1045: AI_SET_PTR(result->var, *retval);
! 1046: PZVAL_LOCK(*retval);
! 1047: }
! 1048: return;
! 1049: break;
! 1050:
! 1051: case IS_NULL:
! 1052: if (result) {
! 1053: AI_SET_PTR(result->var, EG(uninitialized_zval_ptr));
! 1054: PZVAL_LOCK(EG(uninitialized_zval_ptr));
! 1055: }
! 1056: return;
! 1057: break;
! 1058:
! 1059: case IS_STRING: {
! 1060: zval tmp;
! 1061:
! 1062: if (Z_TYPE_P(dim) != IS_LONG) {
! 1063: switch(Z_TYPE_P(dim)) {
! 1064: /* case IS_LONG: */
! 1065: case IS_STRING:
! 1066: case IS_DOUBLE:
! 1067: case IS_NULL:
! 1068: case IS_BOOL:
! 1069: /* do nothing */
! 1070: break;
! 1071: default:
! 1072: zend_error(E_WARNING, "Illegal offset type");
! 1073: break;
! 1074: }
! 1075:
! 1076: tmp = *dim;
! 1077: zval_copy_ctor(&tmp);
! 1078: convert_to_long(&tmp);
! 1079: dim = &tmp;
! 1080: }
! 1081: if (result) {
! 1082: if ((Z_LVAL_P(dim) < 0 || Z_STRLEN_P(container) <= Z_LVAL_P(dim)) && type != BP_VAR_IS) {
! 1083: zend_error(E_NOTICE, "Uninitialized string offset: %ld", Z_LVAL_P(dim));
! 1084: }
! 1085: result->str_offset.str = container;
! 1086: PZVAL_LOCK(container);
! 1087: result->str_offset.offset = Z_LVAL_P(dim);
! 1088: result->var.ptr_ptr = NULL;
! 1089: result->var.ptr = NULL;
! 1090: }
! 1091: return;
! 1092: }
! 1093: break;
! 1094:
! 1095: case IS_OBJECT:
! 1096: if (!Z_OBJ_HT_P(container)->read_dimension) {
! 1097: zend_error_noreturn(E_ERROR, "Cannot use object as array");
! 1098: } else {
! 1099: zval *overloaded_result;
! 1100:
! 1101: if (dim_is_tmp_var) {
! 1102: zval *orig = dim;
! 1103: MAKE_REAL_ZVAL_PTR(dim);
! 1104: ZVAL_NULL(orig);
! 1105: }
! 1106: overloaded_result = Z_OBJ_HT_P(container)->read_dimension(container, dim, type TSRMLS_CC);
! 1107:
! 1108: if (overloaded_result) {
! 1109: if (result) {
! 1110: AI_SET_PTR(result->var, overloaded_result);
! 1111: PZVAL_LOCK(overloaded_result);
! 1112: } else if (Z_REFCOUNT_P(overloaded_result) == 0) {
! 1113: /* Destroy unused result from offsetGet() magic method */
! 1114: Z_SET_REFCOUNT_P(overloaded_result, 1);
! 1115: zval_ptr_dtor(&overloaded_result);
! 1116: }
! 1117: } else if (result) {
! 1118: AI_SET_PTR(result->var, EG(uninitialized_zval_ptr));
! 1119: PZVAL_LOCK(EG(uninitialized_zval_ptr));
! 1120: }
! 1121: if (dim_is_tmp_var) {
! 1122: zval_ptr_dtor(&dim);
! 1123: }
! 1124: }
! 1125: return;
! 1126: break;
! 1127:
! 1128: default:
! 1129: if (result) {
! 1130: AI_SET_PTR(result->var, EG(uninitialized_zval_ptr));
! 1131: PZVAL_LOCK(EG(uninitialized_zval_ptr));
! 1132: }
! 1133: return;
! 1134: break;
! 1135: }
! 1136: }
! 1137:
! 1138: static void zend_fetch_property_address(temp_variable *result, zval **container_ptr, zval *prop_ptr, int type TSRMLS_DC)
! 1139: {
! 1140: zval *container = *container_ptr;;
! 1141:
! 1142: if (Z_TYPE_P(container) != IS_OBJECT) {
! 1143: if (container == EG(error_zval_ptr)) {
! 1144: result->var.ptr_ptr = &EG(error_zval_ptr);
! 1145: PZVAL_LOCK(*result->var.ptr_ptr);
! 1146: return;
! 1147: }
! 1148:
! 1149: /* this should modify object only if it's empty */
! 1150: if (type != BP_VAR_UNSET &&
! 1151: ((Z_TYPE_P(container) == IS_NULL ||
! 1152: (Z_TYPE_P(container) == IS_BOOL && Z_LVAL_P(container)==0) ||
! 1153: (Z_TYPE_P(container) == IS_STRING && Z_STRLEN_P(container)==0)))) {
! 1154: if (!PZVAL_IS_REF(container)) {
! 1155: SEPARATE_ZVAL(container_ptr);
! 1156: container = *container_ptr;
! 1157: }
! 1158: object_init(container);
! 1159: } else {
! 1160: zend_error(E_WARNING, "Attempt to modify property of non-object");
! 1161: result->var.ptr_ptr = &EG(error_zval_ptr);
! 1162: PZVAL_LOCK(EG(error_zval_ptr));
! 1163: return;
! 1164: }
! 1165: }
! 1166:
! 1167: if (Z_OBJ_HT_P(container)->get_property_ptr_ptr) {
! 1168: zval **ptr_ptr = Z_OBJ_HT_P(container)->get_property_ptr_ptr(container, prop_ptr TSRMLS_CC);
! 1169: if (NULL == ptr_ptr) {
! 1170: zval *ptr;
! 1171:
! 1172: if (Z_OBJ_HT_P(container)->read_property &&
! 1173: (ptr = Z_OBJ_HT_P(container)->read_property(container, prop_ptr, type TSRMLS_CC)) != NULL) {
! 1174: AI_SET_PTR(result->var, ptr);
! 1175: PZVAL_LOCK(ptr);
! 1176: } else {
! 1177: zend_error_noreturn(E_ERROR, "Cannot access undefined property for object with overloaded property access");
! 1178: }
! 1179: } else {
! 1180: result->var.ptr_ptr = ptr_ptr;
! 1181: PZVAL_LOCK(*ptr_ptr);
! 1182: }
! 1183: } else if (Z_OBJ_HT_P(container)->read_property) {
! 1184: zval *ptr = Z_OBJ_HT_P(container)->read_property(container, prop_ptr, type TSRMLS_CC);
! 1185:
! 1186: AI_SET_PTR(result->var, ptr);
! 1187: PZVAL_LOCK(ptr);
! 1188: } else {
! 1189: zend_error(E_WARNING, "This object doesn't support property references");
! 1190: result->var.ptr_ptr = &EG(error_zval_ptr);
! 1191: PZVAL_LOCK(EG(error_zval_ptr));
! 1192: }
! 1193: }
! 1194:
! 1195: static inline zend_brk_cont_element* zend_brk_cont(const zval *nest_levels_zval, int array_offset, const zend_op_array *op_array, const temp_variable *Ts TSRMLS_DC)
! 1196: {
! 1197: zval tmp;
! 1198: int nest_levels, original_nest_levels;
! 1199: zend_brk_cont_element *jmp_to;
! 1200:
! 1201: if (nest_levels_zval->type != IS_LONG) {
! 1202: tmp = *nest_levels_zval;
! 1203: zval_copy_ctor(&tmp);
! 1204: convert_to_long(&tmp);
! 1205: nest_levels = tmp.value.lval;
! 1206: } else {
! 1207: nest_levels = nest_levels_zval->value.lval;
! 1208: }
! 1209: original_nest_levels = nest_levels;
! 1210: do {
! 1211: if (array_offset==-1) {
! 1212: zend_error_noreturn(E_ERROR, "Cannot break/continue %d level%s", original_nest_levels, (original_nest_levels == 1) ? "" : "s");
! 1213: }
! 1214: jmp_to = &op_array->brk_cont_array[array_offset];
! 1215: if (nest_levels>1) {
! 1216: zend_op *brk_opline = &op_array->opcodes[jmp_to->brk];
! 1217:
! 1218: switch (brk_opline->opcode) {
! 1219: case ZEND_SWITCH_FREE:
! 1220: if (brk_opline->op1.u.EA.type != EXT_TYPE_FREE_ON_RETURN) {
! 1221: zend_switch_free(&T(brk_opline->op1.u.var), brk_opline->extended_value TSRMLS_CC);
! 1222: }
! 1223: break;
! 1224: case ZEND_FREE:
! 1225: if (brk_opline->op1.u.EA.type != EXT_TYPE_FREE_ON_RETURN) {
! 1226: zendi_zval_dtor(T(brk_opline->op1.u.var).tmp_var);
! 1227: }
! 1228: break;
! 1229: }
! 1230: }
! 1231: array_offset = jmp_to->parent;
! 1232: } while (--nest_levels > 0);
! 1233: return jmp_to;
! 1234: }
! 1235:
! 1236: #if ZEND_INTENSIVE_DEBUGGING
! 1237:
! 1238: #define CHECK_SYMBOL_TABLES() \
! 1239: zend_hash_apply(&EG(symbol_table), (apply_func_t) zend_check_symbol TSRMLS_CC); \
! 1240: if (&EG(symbol_table)!=EG(active_symbol_table)) { \
! 1241: zend_hash_apply(EG(active_symbol_table), (apply_func_t) zend_check_symbol TSRMLS_CC); \
! 1242: }
! 1243:
! 1244: static int zend_check_symbol(zval **pz TSRMLS_DC)
! 1245: {
! 1246: if (Z_TYPE_PP(pz) > 9) {
! 1247: fprintf(stderr, "Warning! %x has invalid type!\n", *pz);
! 1248: /* See http://support.microsoft.com/kb/190351 */
! 1249: #ifdef PHP_WIN32
! 1250: fflush(stderr);
! 1251: #endif
! 1252: } else if (Z_TYPE_PP(pz) == IS_ARRAY) {
! 1253: zend_hash_apply(Z_ARRVAL_PP(pz), (apply_func_t) zend_check_symbol TSRMLS_CC);
! 1254: } else if (Z_TYPE_PP(pz) == IS_OBJECT) {
! 1255:
! 1256: /* OBJ-TBI - doesn't support new object model! */
! 1257: zend_hash_apply(Z_OBJPROP_PP(pz), (apply_func_t) zend_check_symbol TSRMLS_CC);
! 1258: }
! 1259:
! 1260: return 0;
! 1261: }
! 1262:
! 1263:
! 1264: #else
! 1265: #define CHECK_SYMBOL_TABLES()
! 1266: #endif
! 1267:
! 1268: ZEND_API opcode_handler_t *zend_opcode_handlers;
! 1269:
! 1270: ZEND_API void execute_internal(zend_execute_data *execute_data_ptr, int return_value_used TSRMLS_DC)
! 1271: {
! 1272: zval **return_value_ptr = &(*(temp_variable *)((char *) execute_data_ptr->Ts + execute_data_ptr->opline->result.u.var)).var.ptr;
! 1273: ((zend_internal_function *) execute_data_ptr->function_state.function)->handler(execute_data_ptr->opline->extended_value, *return_value_ptr, execute_data_ptr->function_state.function->common.return_reference?return_value_ptr:NULL, execute_data_ptr->object, return_value_used TSRMLS_CC);
! 1274: }
! 1275:
! 1276: #define ZEND_VM_NEXT_OPCODE() \
! 1277: CHECK_SYMBOL_TABLES() \
! 1278: EX(opline)++; \
! 1279: ZEND_VM_CONTINUE()
! 1280:
! 1281: #define ZEND_VM_SET_OPCODE(new_op) \
! 1282: CHECK_SYMBOL_TABLES() \
! 1283: EX(opline) = new_op
! 1284:
! 1285: #define ZEND_VM_JMP(new_op) \
! 1286: CHECK_SYMBOL_TABLES() \
! 1287: if (EXPECTED(!EG(exception))) { \
! 1288: EX(opline) = new_op; \
! 1289: } \
! 1290: ZEND_VM_CONTINUE()
! 1291:
! 1292: #define ZEND_VM_INC_OPCODE() \
! 1293: EX(opline)++
! 1294:
! 1295: #include "zend_vm_execute.h"
! 1296:
! 1297: ZEND_API int zend_set_user_opcode_handler(zend_uchar opcode, user_opcode_handler_t handler)
! 1298: {
! 1299: if (opcode != ZEND_USER_OPCODE) {
! 1300: zend_user_opcodes[opcode] = ZEND_USER_OPCODE;
! 1301: zend_user_opcode_handlers[opcode] = handler;
! 1302: return SUCCESS;
! 1303: }
! 1304: return FAILURE;
! 1305: }
! 1306:
! 1307: ZEND_API user_opcode_handler_t zend_get_user_opcode_handler(zend_uchar opcode)
! 1308: {
! 1309: return zend_user_opcode_handlers[opcode];
! 1310: }
! 1311:
! 1312: ZEND_API zval *zend_get_zval_ptr(znode *node, const temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC) {
! 1313: return get_zval_ptr(node, Ts, should_free, type);
! 1314: }
! 1315:
! 1316: ZEND_API zval **zend_get_zval_ptr_ptr(const znode *node, const temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC) {
! 1317: return get_zval_ptr_ptr(node, Ts, should_free, type);
! 1318: }
! 1319:
! 1320: /*
! 1321: * Local variables:
! 1322: * tab-width: 4
! 1323: * c-basic-offset: 4
! 1324: * indent-tabs-mode: t
! 1325: * End:
! 1326: */
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