/* +----------------------------------------------------------------------+ | Zend Engine | +----------------------------------------------------------------------+ | Copyright (c) 1998-2018 Zend Technologies Ltd. (http://www.zend.com) | +----------------------------------------------------------------------+ | This source file is subject to version 2.00 of the Zend license, | | that is bundled with this package in the file LICENSE, and is | | available through the world-wide-web at the following url: | | http://www.zend.com/license/2_00.txt. | | If you did not receive a copy of the Zend license and are unable to | | obtain it through the world-wide-web, please send a note to | | license@zend.com so we can mail you a copy immediately. | +----------------------------------------------------------------------+ | Authors: Andi Gutmans | | Zeev Suraski | | Dmitry Stogov | +----------------------------------------------------------------------+ */ #define ZEND_INTENSIVE_DEBUGGING 0 #include #include #include "zend.h" #include "zend_compile.h" #include "zend_execute.h" #include "zend_API.h" #include "zend_ptr_stack.h" #include "zend_constants.h" #include "zend_extensions.h" #include "zend_ini.h" #include "zend_exceptions.h" #include "zend_interfaces.h" #include "zend_closures.h" #include "zend_generators.h" #include "zend_vm.h" #include "zend_dtrace.h" #include "zend_inheritance.h" #include "zend_type_info.h" /* Virtual current working directory support */ #include "zend_virtual_cwd.h" #ifdef HAVE_GCC_GLOBAL_REGS # if defined(__GNUC__) && ZEND_GCC_VERSION >= 4008 && defined(i386) # define ZEND_VM_FP_GLOBAL_REG "%esi" # define ZEND_VM_IP_GLOBAL_REG "%edi" # elif defined(__GNUC__) && ZEND_GCC_VERSION >= 4008 && defined(__x86_64__) # define ZEND_VM_FP_GLOBAL_REG "%r14" # define ZEND_VM_IP_GLOBAL_REG "%r15" # elif defined(__GNUC__) && ZEND_GCC_VERSION >= 4008 && defined(__powerpc64__) # define ZEND_VM_FP_GLOBAL_REG "r28" # define ZEND_VM_IP_GLOBAL_REG "r29" # elif defined(__IBMC__) && ZEND_GCC_VERSION >= 4002 && defined(__powerpc64__) # define ZEND_VM_FP_GLOBAL_REG "r28" # define ZEND_VM_IP_GLOBAL_REG "r29" # endif #endif #if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID)) # pragma GCC diagnostic ignored "-Wvolatile-register-var" register zend_execute_data* volatile execute_data __asm__(ZEND_VM_FP_GLOBAL_REG); # pragma GCC diagnostic warning "-Wvolatile-register-var" # define EXECUTE_DATA_D void # define EXECUTE_DATA_C # define EXECUTE_DATA_DC # define EXECUTE_DATA_CC # define NO_EXECUTE_DATA_CC # define OPLINE_D void # define OPLINE_C # define OPLINE_DC # define OPLINE_CC #else # define EXECUTE_DATA_D zend_execute_data* execute_data # define EXECUTE_DATA_C execute_data # define EXECUTE_DATA_DC , EXECUTE_DATA_D # define EXECUTE_DATA_CC , EXECUTE_DATA_C # define NO_EXECUTE_DATA_CC , NULL # define OPLINE_D const zend_op* opline # define OPLINE_C opline # define OPLINE_DC , OPLINE_D # define OPLINE_CC , OPLINE_C #endif #if defined(ZEND_VM_IP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID)) # pragma GCC diagnostic ignored "-Wvolatile-register-var" register const zend_op* volatile opline __asm__(ZEND_VM_IP_GLOBAL_REG); # pragma GCC diagnostic warning "-Wvolatile-register-var" #else #endif #define _CONST_CODE 0 #define _TMP_CODE 1 #define _VAR_CODE 2 #define _UNUSED_CODE 3 #define _CV_CODE 4 typedef int (ZEND_FASTCALL *incdec_t)(zval *); #define get_zval_ptr(op_type, node, should_free, type) _get_zval_ptr(op_type, node, should_free, type EXECUTE_DATA_CC OPLINE_CC) #define get_zval_ptr_deref(op_type, node, should_free, type) _get_zval_ptr_deref(op_type, node, should_free, type EXECUTE_DATA_CC OPLINE_CC) #define get_zval_ptr_undef(op_type, node, should_free, type) _get_zval_ptr_undef(op_type, node, should_free, type EXECUTE_DATA_CC OPLINE_CC) #define get_op_data_zval_ptr_r(op_type, node, should_free) _get_op_data_zval_ptr_r(op_type, node, should_free EXECUTE_DATA_CC OPLINE_CC) #define get_op_data_zval_ptr_deref_r(op_type, node, should_free) _get_op_data_zval_ptr_deref_r(op_type, node, should_free EXECUTE_DATA_CC OPLINE_CC) #define get_zval_ptr_ptr(op_type, node, should_free, type) _get_zval_ptr_ptr(op_type, node, should_free, type EXECUTE_DATA_CC) #define get_zval_ptr_ptr_undef(op_type, node, should_free, type) _get_zval_ptr_ptr(op_type, node, should_free, type EXECUTE_DATA_CC) #define get_obj_zval_ptr(op_type, node, should_free, type) _get_obj_zval_ptr(op_type, node, should_free, type EXECUTE_DATA_CC OPLINE_CC) #define get_obj_zval_ptr_undef(op_type, node, should_free, type) _get_obj_zval_ptr_undef(op_type, node, should_free, type EXECUTE_DATA_CC OPLINE_CC) #define get_obj_zval_ptr_ptr(op_type, node, should_free, type) _get_obj_zval_ptr_ptr(op_type, node, should_free, type EXECUTE_DATA_CC) #define RETURN_VALUE_USED(opline) ((opline)->result_type != IS_UNUSED) static ZEND_FUNCTION(pass) { } ZEND_API const zend_internal_function zend_pass_function = { ZEND_INTERNAL_FUNCTION, /* type */ {0, 0, 0}, /* arg_flags */ 0, /* fn_flags */ NULL, /* name */ NULL, /* scope */ NULL, /* prototype */ 0, /* num_args */ 0, /* required_num_args */ NULL, /* arg_info */ ZEND_FN(pass), /* handler */ NULL, /* module */ {NULL,NULL,NULL,NULL} /* reserved */ }; #undef zval_ptr_dtor #define zval_ptr_dtor(zv) i_zval_ptr_dtor(zv ZEND_FILE_LINE_CC) #define FREE_VAR_PTR_AND_EXTRACT_RESULT_IF_NECESSARY(free_op, result) do { \ zval *__container_to_free = (free_op); \ if (UNEXPECTED(__container_to_free) \ && EXPECTED(Z_REFCOUNTED_P(__container_to_free))) { \ zend_refcounted *__ref = Z_COUNTED_P(__container_to_free); \ if (UNEXPECTED(!GC_DELREF(__ref))) { \ zval *__zv = (result); \ if (EXPECTED(Z_TYPE_P(__zv) == IS_INDIRECT)) { \ ZVAL_COPY(__zv, Z_INDIRECT_P(__zv)); \ } \ rc_dtor_func(__ref); \ } \ } \ } while (0) #define FREE_OP(should_free) \ if (should_free) { \ zval_ptr_dtor_nogc(should_free); \ } #define FREE_UNFETCHED_OP(type, var) \ if ((type) & (IS_TMP_VAR|IS_VAR)) { \ zval_ptr_dtor_nogc(EX_VAR(var)); \ } #define FREE_OP_VAR_PTR(should_free) \ if (should_free) { \ zval_ptr_dtor_nogc(should_free); \ } #define CV_DEF_OF(i) (EX(func)->op_array.vars[i]) #define ZEND_VM_STACK_PAGE_SLOTS (16 * 1024) /* should be a power of 2 */ #define ZEND_VM_STACK_PAGE_SIZE (ZEND_VM_STACK_PAGE_SLOTS * sizeof(zval)) #define ZEND_VM_STACK_PAGE_ALIGNED_SIZE(size, page_size) \ (((size) + ZEND_VM_STACK_HEADER_SLOTS * sizeof(zval) \ + ((page_size) - 1)) & ~((page_size) - 1)) static zend_always_inline zend_vm_stack zend_vm_stack_new_page(size_t size, zend_vm_stack prev) { zend_vm_stack page = (zend_vm_stack)emalloc(size); page->top = ZEND_VM_STACK_ELEMENTS(page); page->end = (zval*)((char*)page + size); page->prev = prev; return page; } ZEND_API void zend_vm_stack_init(void) { EG(vm_stack_page_size) = ZEND_VM_STACK_PAGE_SIZE; EG(vm_stack) = zend_vm_stack_new_page(ZEND_VM_STACK_PAGE_SIZE, NULL); EG(vm_stack)->top++; EG(vm_stack_top) = EG(vm_stack)->top; EG(vm_stack_end) = EG(vm_stack)->end; } ZEND_API void zend_vm_stack_init_ex(size_t page_size) { /* page_size must be a power of 2 */ ZEND_ASSERT(page_size > 0 && (page_size & (page_size - 1)) == 0); EG(vm_stack_page_size) = page_size; EG(vm_stack) = zend_vm_stack_new_page(page_size, NULL); EG(vm_stack_top) = EG(vm_stack)->top; EG(vm_stack_end) = EG(vm_stack)->end; } ZEND_API void zend_vm_stack_destroy(void) { zend_vm_stack stack = EG(vm_stack); while (stack != NULL) { zend_vm_stack p = stack->prev; efree(stack); stack = p; } } ZEND_API void* zend_vm_stack_extend(size_t size) { zend_vm_stack stack; void *ptr; stack = EG(vm_stack); stack->top = EG(vm_stack_top); EG(vm_stack) = stack = zend_vm_stack_new_page( EXPECTED(size < EG(vm_stack_page_size) - (ZEND_VM_STACK_HEADER_SLOTS * sizeof(zval))) ? EG(vm_stack_page_size) : ZEND_VM_STACK_PAGE_ALIGNED_SIZE(size, EG(vm_stack_page_size)), stack); ptr = stack->top; EG(vm_stack_top) = (void*)(((char*)ptr) + size); EG(vm_stack_end) = stack->end; return ptr; } ZEND_API zval* zend_get_compiled_variable_value(const zend_execute_data *execute_data, uint32_t var) { return EX_VAR(var); } static zend_always_inline zval *_get_zval_ptr_tmp(uint32_t var, zend_free_op *should_free EXECUTE_DATA_DC) { zval *ret = EX_VAR(var); *should_free = ret; ZEND_ASSERT(Z_TYPE_P(ret) != IS_REFERENCE); return ret; } static zend_always_inline zval *_get_zval_ptr_var(uint32_t var, zend_free_op *should_free EXECUTE_DATA_DC) { zval *ret = EX_VAR(var); *should_free = ret; return ret; } static zend_always_inline zval *_get_zval_ptr_var_deref(uint32_t var, zend_free_op *should_free EXECUTE_DATA_DC) { zval *ret = EX_VAR(var); *should_free = ret; ZVAL_DEREF(ret); return ret; } static zend_never_inline ZEND_COLD void zval_undefined_cv(uint32_t var EXECUTE_DATA_DC) { if (EXPECTED(EG(exception) == NULL)) { zend_string *cv = CV_DEF_OF(EX_VAR_TO_NUM(var)); zend_error(E_NOTICE, "Undefined variable: %s", ZSTR_VAL(cv)); } } static zend_never_inline ZEND_COLD zval *_get_zval_cv_lookup(zval *ptr, uint32_t var, int type EXECUTE_DATA_DC) { switch (type) { case BP_VAR_R: case BP_VAR_UNSET: zval_undefined_cv(var EXECUTE_DATA_CC); /* break missing intentionally */ case BP_VAR_IS: ptr = &EG(uninitialized_zval); break; case BP_VAR_RW: zval_undefined_cv(var EXECUTE_DATA_CC); /* break missing intentionally */ case BP_VAR_W: ZVAL_NULL(ptr); break; } return ptr; } static zend_never_inline ZEND_COLD zval *_get_zval_cv_lookup_BP_VAR_R(zval *ptr, uint32_t var EXECUTE_DATA_DC) { zval_undefined_cv(var EXECUTE_DATA_CC); return &EG(uninitialized_zval); } static zend_never_inline ZEND_COLD zval *_get_zval_cv_lookup_BP_VAR_UNSET(zval *ptr, uint32_t var EXECUTE_DATA_DC) { zval_undefined_cv(var EXECUTE_DATA_CC); return &EG(uninitialized_zval); } static zend_never_inline ZEND_COLD zval *_get_zval_cv_lookup_BP_VAR_RW(zval *ptr, uint32_t var EXECUTE_DATA_DC) { ZVAL_NULL(ptr); zval_undefined_cv(var EXECUTE_DATA_CC); return ptr; } static zend_always_inline zval *_get_zval_ptr_cv(uint32_t var, int type EXECUTE_DATA_DC) { zval *ret = EX_VAR(var); if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) { if (type == BP_VAR_W) { ZVAL_NULL(ret); } else { return _get_zval_cv_lookup(ret, var, type EXECUTE_DATA_CC); } } return ret; } static zend_always_inline zval *_get_zval_ptr_cv_deref(uint32_t var, int type EXECUTE_DATA_DC) { zval *ret = EX_VAR(var); if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) { if (type == BP_VAR_W) { ZVAL_NULL(ret); return ret; } else { return _get_zval_cv_lookup(ret, var, type EXECUTE_DATA_CC); } } ZVAL_DEREF(ret); return ret; } static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_R(uint32_t var EXECUTE_DATA_DC) { zval *ret = EX_VAR(var); if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) { return _get_zval_cv_lookup_BP_VAR_R(ret, var EXECUTE_DATA_CC); } return ret; } static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_R(uint32_t var EXECUTE_DATA_DC) { zval *ret = EX_VAR(var); if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) { return _get_zval_cv_lookup_BP_VAR_R(ret, var EXECUTE_DATA_CC); } ZVAL_DEREF(ret); return ret; } static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_UNSET(uint32_t var EXECUTE_DATA_DC) { zval *ret = EX_VAR(var); if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) { return _get_zval_cv_lookup_BP_VAR_UNSET(ret, var EXECUTE_DATA_CC); } return ret; } static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_UNSET(uint32_t var EXECUTE_DATA_DC) { zval *ret = EX_VAR(var); if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) { return _get_zval_cv_lookup_BP_VAR_UNSET(ret, var EXECUTE_DATA_CC); } ZVAL_DEREF(ret); return ret; } static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_IS(uint32_t var EXECUTE_DATA_DC) { zval *ret = EX_VAR(var); return ret; } static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_IS(uint32_t var EXECUTE_DATA_DC) { zval *ret = EX_VAR(var); ZVAL_DEREF(ret); return ret; } static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_RW(uint32_t var EXECUTE_DATA_DC) { zval *ret = EX_VAR(var); if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) { return _get_zval_cv_lookup_BP_VAR_RW(ret, var EXECUTE_DATA_CC); } return ret; } static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_RW(uint32_t var EXECUTE_DATA_DC) { zval *ret = EX_VAR(var); if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) { return _get_zval_cv_lookup_BP_VAR_RW(ret, var EXECUTE_DATA_CC); } ZVAL_DEREF(ret); return ret; } static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_W(uint32_t var EXECUTE_DATA_DC) { zval *ret = EX_VAR(var); if (Z_TYPE_P(ret) == IS_UNDEF) { ZVAL_NULL(ret); } return ret; } static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_W(uint32_t var EXECUTE_DATA_DC) { zval *ret = EX_VAR(var); if (Z_TYPE_P(ret) == IS_UNDEF) { ZVAL_NULL(ret); return ret; } ZVAL_DEREF(ret); return ret; } static zend_always_inline zval *_get_zval_ptr(int op_type, znode_op node, zend_free_op *should_free, int type EXECUTE_DATA_DC OPLINE_DC) { if (op_type & (IS_TMP_VAR|IS_VAR)) { if (op_type == IS_TMP_VAR) { return _get_zval_ptr_tmp(node.var, should_free EXECUTE_DATA_CC); } else { ZEND_ASSERT(op_type == IS_VAR); return _get_zval_ptr_var(node.var, should_free EXECUTE_DATA_CC); } } else { *should_free = NULL; if (op_type == IS_CONST) { return RT_CONSTANT(opline, node); } else if (op_type == IS_CV) { return _get_zval_ptr_cv(node.var, type EXECUTE_DATA_CC); } else { return NULL; } } } static zend_always_inline zval *_get_op_data_zval_ptr_r(int op_type, znode_op node, zend_free_op *should_free EXECUTE_DATA_DC OPLINE_DC) { if (op_type & (IS_TMP_VAR|IS_VAR)) { if (op_type == IS_TMP_VAR) { return _get_zval_ptr_tmp(node.var, should_free EXECUTE_DATA_CC); } else { ZEND_ASSERT(op_type == IS_VAR); return _get_zval_ptr_var(node.var, should_free EXECUTE_DATA_CC); } } else { *should_free = NULL; if (op_type == IS_CONST) { return RT_CONSTANT(opline + 1, node); } else if (op_type == IS_CV) { return _get_zval_ptr_cv_BP_VAR_R(node.var EXECUTE_DATA_CC); } else { return NULL; } } } static zend_always_inline zval *_get_zval_ptr_deref(int op_type, znode_op node, zend_free_op *should_free, int type EXECUTE_DATA_DC OPLINE_DC) { if (op_type & (IS_TMP_VAR|IS_VAR)) { if (op_type == IS_TMP_VAR) { return _get_zval_ptr_tmp(node.var, should_free EXECUTE_DATA_CC); } else { ZEND_ASSERT(op_type == IS_VAR); return _get_zval_ptr_var_deref(node.var, should_free EXECUTE_DATA_CC); } } else { *should_free = NULL; if (op_type == IS_CONST) { return RT_CONSTANT(opline, node); } else if (op_type == IS_CV) { return _get_zval_ptr_cv_deref(node.var, type EXECUTE_DATA_CC); } else { return NULL; } } } static zend_always_inline zval *_get_op_data_zval_ptr_deref_r(int op_type, znode_op node, zend_free_op *should_free EXECUTE_DATA_DC OPLINE_DC) { if (op_type & (IS_TMP_VAR|IS_VAR)) { if (op_type == IS_TMP_VAR) { return _get_zval_ptr_tmp(node.var, should_free EXECUTE_DATA_CC); } else { ZEND_ASSERT(op_type == IS_VAR); return _get_zval_ptr_var_deref(node.var, should_free EXECUTE_DATA_CC); } } else { *should_free = NULL; if (op_type == IS_CONST) { return RT_CONSTANT(opline + 1, node); } else if (op_type == IS_CV) { return _get_zval_ptr_cv_deref_BP_VAR_R(node.var EXECUTE_DATA_CC); } else { return NULL; } } } static zend_always_inline zval *_get_zval_ptr_undef(int op_type, znode_op node, zend_free_op *should_free, int type EXECUTE_DATA_DC OPLINE_DC) { if (op_type & (IS_TMP_VAR|IS_VAR)) { if (op_type == IS_TMP_VAR) { return _get_zval_ptr_tmp(node.var, should_free EXECUTE_DATA_CC); } else { ZEND_ASSERT(op_type == IS_VAR); return _get_zval_ptr_var(node.var, should_free EXECUTE_DATA_CC); } } else { *should_free = NULL; if (op_type == IS_CONST) { return RT_CONSTANT(opline, node); } else if (op_type == IS_CV) { return EX_VAR(node.var); } else { return NULL; } } } static zend_always_inline zval *_get_zval_ptr_ptr_var(uint32_t var, zend_free_op *should_free EXECUTE_DATA_DC) { zval *ret = EX_VAR(var); if (EXPECTED(Z_TYPE_P(ret) == IS_INDIRECT)) { *should_free = NULL; ret = Z_INDIRECT_P(ret); } else { *should_free = ret; } return ret; } static inline zval *_get_zval_ptr_ptr(int op_type, znode_op node, zend_free_op *should_free, int type EXECUTE_DATA_DC) { if (op_type == IS_CV) { *should_free = NULL; return _get_zval_ptr_cv(node.var, type EXECUTE_DATA_CC); } else /* if (op_type == IS_VAR) */ { ZEND_ASSERT(op_type == IS_VAR); return _get_zval_ptr_ptr_var(node.var, should_free EXECUTE_DATA_CC); } } static inline zval *_get_obj_zval_ptr(int op_type, znode_op op, zend_free_op *should_free, int type EXECUTE_DATA_DC OPLINE_DC) { if (op_type == IS_UNUSED) { *should_free = NULL; return &EX(This); } return get_zval_ptr(op_type, op, should_free, type); } static inline zval *_get_obj_zval_ptr_undef(int op_type, znode_op op, zend_free_op *should_free, int type EXECUTE_DATA_DC OPLINE_DC) { if (op_type == IS_UNUSED) { *should_free = NULL; return &EX(This); } return get_zval_ptr_undef(op_type, op, should_free, type); } static inline zval *_get_obj_zval_ptr_ptr(int op_type, znode_op node, zend_free_op *should_free, int type EXECUTE_DATA_DC) { if (op_type == IS_UNUSED) { *should_free = NULL; return &EX(This); } return get_zval_ptr_ptr(op_type, node, should_free, type); } static inline void zend_assign_to_variable_reference(zval *variable_ptr, zval *value_ptr) { zend_reference *ref; if (EXPECTED(!Z_ISREF_P(value_ptr))) { ZVAL_NEW_REF(value_ptr, value_ptr); } else if (UNEXPECTED(variable_ptr == value_ptr)) { return; } ref = Z_REF_P(value_ptr); GC_ADDREF(ref); if (Z_REFCOUNTED_P(variable_ptr)) { zend_refcounted *garbage = Z_COUNTED_P(variable_ptr); if (GC_DELREF(garbage) == 0) { ZVAL_REF(variable_ptr, ref); rc_dtor_func(garbage); return; } else { gc_check_possible_root(garbage); } } ZVAL_REF(variable_ptr, ref); } static zend_never_inline ZEND_COLD int zend_wrong_assign_to_variable_reference(zval *variable_ptr, zval *value_ptr, zend_uchar value_type OPLINE_DC EXECUTE_DATA_DC) { zend_error(E_NOTICE, "Only variables should be assigned by reference"); if (UNEXPECTED(EG(exception) != NULL)) { return 0; } value_ptr = zend_assign_to_variable(variable_ptr, value_ptr, value_type); if (UNEXPECTED(RETURN_VALUE_USED(opline))) { ZVAL_COPY(EX_VAR(opline->result.var), value_ptr); } return 1; } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_wrong_property_assignment(zval *property OPLINE_DC EXECUTE_DATA_DC) { zend_string *tmp_property_name; zend_string *property_name = zval_get_tmp_string(property, &tmp_property_name); zend_error(E_WARNING, "Attempt to assign property '%s' of non-object", ZSTR_VAL(property_name)); zend_tmp_string_release(tmp_property_name); if (UNEXPECTED(RETURN_VALUE_USED(opline))) { ZVAL_NULL(EX_VAR(opline->result.var)); } } /* this should modify object only if it's empty */ static zend_never_inline ZEND_COLD int ZEND_FASTCALL make_real_object(zval *object, zval *property OPLINE_DC EXECUTE_DATA_DC) { zend_object *obj; if (EXPECTED(Z_TYPE_P(object) <= IS_FALSE)) { /* nothing to destroy */ } else if (EXPECTED((Z_TYPE_P(object) == IS_STRING && Z_STRLEN_P(object) == 0))) { zval_ptr_dtor_nogc(object); } else { if (opline->op1_type != IS_VAR || EXPECTED(!Z_ISERROR_P(object))) { zend_string *tmp_property_name; zend_string *property_name = zval_get_tmp_string(property, &tmp_property_name); if (opline->opcode == ZEND_PRE_INC_OBJ || opline->opcode == ZEND_PRE_DEC_OBJ || opline->opcode == ZEND_POST_INC_OBJ || opline->opcode == ZEND_POST_DEC_OBJ) { zend_error(E_WARNING, "Attempt to increment/decrement property '%s' of non-object", ZSTR_VAL(property_name)); } else { zend_error(E_WARNING, "Attempt to assign property '%s' of non-object", ZSTR_VAL(property_name)); } zend_tmp_string_release(tmp_property_name); } if (UNEXPECTED(RETURN_VALUE_USED(opline))) { ZVAL_NULL(EX_VAR(opline->result.var)); } return 0; } object_init(object); Z_ADDREF_P(object); obj = Z_OBJ_P(object); zend_error(E_WARNING, "Creating default object from empty value"); if (GC_REFCOUNT(obj) == 1) { /* the enclosing container was deleted, obj is unreferenced */ OBJ_RELEASE(obj); if (UNEXPECTED(RETURN_VALUE_USED(opline))) { ZVAL_NULL(EX_VAR(opline->result.var)); } return 0; } Z_DELREF_P(object); return 1; } static zend_never_inline ZEND_COLD int ZEND_FASTCALL make_real_object_rw(zval *object, zval *property OPLINE_DC) { if (EXPECTED(Z_TYPE_P(object) <= IS_FALSE)) { /* nothing to destroy */ } else if (EXPECTED((Z_TYPE_P(object) == IS_STRING && Z_STRLEN_P(object) == 0))) { zval_ptr_dtor_nogc(object); } else { if (opline->op1_type != IS_VAR || EXPECTED(!Z_ISERROR_P(object))) { zend_string *tmp_property_name; zend_string *property_name = zval_get_tmp_string(property, &tmp_property_name); zend_error(E_WARNING, "Attempt to modify property '%s' of non-object", ZSTR_VAL(property_name)); zend_tmp_string_release(tmp_property_name); } return 0; } object_init(object); return 1; } static ZEND_COLD void zend_verify_type_error_common( const zend_function *zf, const zend_arg_info *arg_info, const zend_class_entry *ce, zval *value, const char **fname, const char **fsep, const char **fclass, const char **need_msg, const char **need_kind, const char **need_or_null, const char **given_msg, const char **given_kind) { zend_bool is_interface = 0; *fname = ZSTR_VAL(zf->common.function_name); if (zf->common.scope) { *fsep = "::"; *fclass = ZSTR_VAL(zf->common.scope->name); } else { *fsep = ""; *fclass = ""; } if (ZEND_TYPE_IS_CLASS(arg_info->type)) { if (ce) { if (ce->ce_flags & ZEND_ACC_INTERFACE) { *need_msg = "implement interface "; is_interface = 1; } else { *need_msg = "be an instance of "; } *need_kind = ZSTR_VAL(ce->name); } else { /* We don't know whether it's a class or interface, assume it's a class */ *need_msg = "be an instance of "; *need_kind = ZSTR_VAL(ZEND_TYPE_NAME(arg_info->type)); } } else { switch (ZEND_TYPE_CODE(arg_info->type)) { case IS_OBJECT: *need_msg = "be an "; *need_kind = "object"; break; case IS_CALLABLE: *need_msg = "be callable"; *need_kind = ""; break; case IS_ITERABLE: *need_msg = "be iterable"; *need_kind = ""; break; default: *need_msg = "be of the type "; *need_kind = zend_get_type_by_const(ZEND_TYPE_CODE(arg_info->type)); break; } } if (ZEND_TYPE_ALLOW_NULL(arg_info->type)) { *need_or_null = is_interface ? " or be null" : " or null"; } else { *need_or_null = ""; } if (value) { if (ZEND_TYPE_IS_CLASS(arg_info->type) && Z_TYPE_P(value) == IS_OBJECT) { *given_msg = "instance of "; *given_kind = ZSTR_VAL(Z_OBJCE_P(value)->name); } else { *given_msg = zend_zval_type_name(value); *given_kind = ""; } } else { *given_msg = "none"; *given_kind = ""; } } static ZEND_COLD void zend_verify_arg_error( const zend_function *zf, const zend_arg_info *arg_info, int arg_num, const zend_class_entry *ce, zval *value) { zend_execute_data *ptr = EG(current_execute_data)->prev_execute_data; const char *fname, *fsep, *fclass; const char *need_msg, *need_kind, *need_or_null, *given_msg, *given_kind; if (value) { zend_verify_type_error_common( zf, arg_info, ce, value, &fname, &fsep, &fclass, &need_msg, &need_kind, &need_or_null, &given_msg, &given_kind); if (zf->common.type == ZEND_USER_FUNCTION) { if (ptr && ptr->func && ZEND_USER_CODE(ptr->func->common.type)) { zend_type_error("Argument %d passed to %s%s%s() must %s%s%s, %s%s given, called in %s on line %d", arg_num, fclass, fsep, fname, need_msg, need_kind, need_or_null, given_msg, given_kind, ZSTR_VAL(ptr->func->op_array.filename), ptr->opline->lineno); } else { zend_type_error("Argument %d passed to %s%s%s() must %s%s%s, %s%s given", arg_num, fclass, fsep, fname, need_msg, need_kind, need_or_null, given_msg, given_kind); } } else { zend_type_error("Argument %d passed to %s%s%s() must %s%s%s, %s%s given", arg_num, fclass, fsep, fname, need_msg, need_kind, need_or_null, given_msg, given_kind); } } else { zend_missing_arg_error(ptr); } } static int is_null_constant(zend_class_entry *scope, zval *default_value) { if (Z_TYPE_P(default_value) == IS_CONSTANT_AST) { zval constant; ZVAL_COPY(&constant, default_value); if (UNEXPECTED(zval_update_constant_ex(&constant, scope) != SUCCESS)) { return 0; } if (Z_TYPE(constant) == IS_NULL) { return 1; } zval_ptr_dtor_nogc(&constant); } return 0; } static zend_bool zend_verify_weak_scalar_type_hint(zend_uchar type_hint, zval *arg) { switch (type_hint) { case _IS_BOOL: { zend_bool dest; if (!zend_parse_arg_bool_weak(arg, &dest)) { return 0; } zval_ptr_dtor(arg); ZVAL_BOOL(arg, dest); return 1; } case IS_LONG: { zend_long dest; if (!zend_parse_arg_long_weak(arg, &dest)) { return 0; } zval_ptr_dtor(arg); ZVAL_LONG(arg, dest); return 1; } case IS_DOUBLE: { double dest; if (!zend_parse_arg_double_weak(arg, &dest)) { return 0; } zval_ptr_dtor(arg); ZVAL_DOUBLE(arg, dest); return 1; } case IS_STRING: { zend_string *dest; /* on success "arg" is converted to IS_STRING */ if (!zend_parse_arg_str_weak(arg, &dest)) { return 0; } return 1; } default: return 0; } } static zend_bool zend_verify_scalar_type_hint(zend_uchar type_hint, zval *arg, zend_bool strict) { if (UNEXPECTED(strict)) { /* SSTH Exception: IS_LONG may be accepted as IS_DOUBLE (converted) */ if (type_hint != IS_DOUBLE || Z_TYPE_P(arg) != IS_LONG) { return 0; } } else if (UNEXPECTED(Z_TYPE_P(arg) == IS_NULL)) { /* NULL may be accepted only by nullable hints (this is already checked) */ return 0; } return zend_verify_weak_scalar_type_hint(type_hint, arg); } static zend_always_inline zend_bool zend_check_type( zend_type type, zval *arg, zend_class_entry **ce, void **cache_slot, zval *default_value, zend_class_entry *scope, zend_bool is_return_type) { if (!ZEND_TYPE_IS_SET(type)) { return 1; } ZVAL_DEREF(arg); if (ZEND_TYPE_IS_CLASS(type)) { if (EXPECTED(*cache_slot)) { *ce = (zend_class_entry *) *cache_slot; } else { *ce = zend_fetch_class(ZEND_TYPE_NAME(type), (ZEND_FETCH_CLASS_AUTO | ZEND_FETCH_CLASS_NO_AUTOLOAD)); if (UNEXPECTED(!*ce)) { return Z_TYPE_P(arg) == IS_NULL && (ZEND_TYPE_ALLOW_NULL(type) || (default_value && is_null_constant(scope, default_value))); } *cache_slot = (void *) *ce; } if (EXPECTED(Z_TYPE_P(arg) == IS_OBJECT)) { return instanceof_function(Z_OBJCE_P(arg), *ce); } return Z_TYPE_P(arg) == IS_NULL && (ZEND_TYPE_ALLOW_NULL(type) || (default_value && is_null_constant(scope, default_value))); } else if (EXPECTED(ZEND_TYPE_CODE(type) == Z_TYPE_P(arg))) { return 1; } if (Z_TYPE_P(arg) == IS_NULL && (ZEND_TYPE_ALLOW_NULL(type) || (default_value && is_null_constant(scope, default_value)))) { /* Null passed to nullable type */ return 1; } if (ZEND_TYPE_CODE(type) == IS_CALLABLE) { return zend_is_callable(arg, IS_CALLABLE_CHECK_SILENT, NULL); } else if (ZEND_TYPE_CODE(type) == IS_ITERABLE) { return zend_is_iterable(arg); } else if (ZEND_TYPE_CODE(type) == _IS_BOOL && EXPECTED(Z_TYPE_P(arg) == IS_FALSE || Z_TYPE_P(arg) == IS_TRUE)) { return 1; } else { return zend_verify_scalar_type_hint(ZEND_TYPE_CODE(type), arg, is_return_type ? ZEND_RET_USES_STRICT_TYPES() : ZEND_ARG_USES_STRICT_TYPES()); } /* Special handling for IS_VOID is not necessary (for return types), * because this case is already checked at compile-time. */ } static zend_always_inline int zend_verify_arg_type(zend_function *zf, uint32_t arg_num, zval *arg, zval *default_value, void **cache_slot) { zend_arg_info *cur_arg_info; zend_class_entry *ce; if (EXPECTED(arg_num <= zf->common.num_args)) { cur_arg_info = &zf->common.arg_info[arg_num-1]; } else if (UNEXPECTED(zf->common.fn_flags & ZEND_ACC_VARIADIC)) { cur_arg_info = &zf->common.arg_info[zf->common.num_args]; } else { return 1; } ce = NULL; if (UNEXPECTED(!zend_check_type(cur_arg_info->type, arg, &ce, cache_slot, default_value, zf->common.scope, 0))) { zend_verify_arg_error(zf, cur_arg_info, arg_num, ce, arg); return 0; } return 1; } static zend_never_inline int zend_verify_internal_arg_types(zend_function *fbc, zend_execute_data *call) { uint32_t i; uint32_t num_args = ZEND_CALL_NUM_ARGS(call); zval *p = ZEND_CALL_ARG(call, 1); void *dummy_cache_slot; for (i = 0; i < num_args; ++i) { dummy_cache_slot = NULL; if (UNEXPECTED(!zend_verify_arg_type(fbc, i + 1, p, NULL, &dummy_cache_slot))) { EG(current_execute_data) = call->prev_execute_data; zend_vm_stack_free_args(call); return 0; } p++; } return 1; } ZEND_API ZEND_COLD void ZEND_FASTCALL zend_missing_arg_error(zend_execute_data *execute_data) { zend_execute_data *ptr = EX(prev_execute_data); if (ptr && ptr->func && ZEND_USER_CODE(ptr->func->common.type)) { zend_throw_error(zend_ce_argument_count_error, "Too few arguments to function %s%s%s(), %d passed in %s on line %d and %s %d expected", EX(func)->common.scope ? ZSTR_VAL(EX(func)->common.scope->name) : "", EX(func)->common.scope ? "::" : "", ZSTR_VAL(EX(func)->common.function_name), EX_NUM_ARGS(), ZSTR_VAL(ptr->func->op_array.filename), ptr->opline->lineno, EX(func)->common.required_num_args == EX(func)->common.num_args ? "exactly" : "at least", EX(func)->common.required_num_args); } else { zend_throw_error(zend_ce_argument_count_error, "Too few arguments to function %s%s%s(), %d passed and %s %d expected", EX(func)->common.scope ? ZSTR_VAL(EX(func)->common.scope->name) : "", EX(func)->common.scope ? "::" : "", ZSTR_VAL(EX(func)->common.function_name), EX_NUM_ARGS(), EX(func)->common.required_num_args == EX(func)->common.num_args ? "exactly" : "at least", EX(func)->common.required_num_args); } } static ZEND_COLD void zend_verify_return_error( const zend_function *zf, const zend_class_entry *ce, zval *value) { const zend_arg_info *arg_info = &zf->common.arg_info[-1]; const char *fname, *fsep, *fclass; const char *need_msg, *need_kind, *need_or_null, *given_msg, *given_kind; zend_verify_type_error_common( zf, arg_info, ce, value, &fname, &fsep, &fclass, &need_msg, &need_kind, &need_or_null, &given_msg, &given_kind); zend_type_error("Return value of %s%s%s() must %s%s%s, %s%s returned", fclass, fsep, fname, need_msg, need_kind, need_or_null, given_msg, given_kind); } #if ZEND_DEBUG static ZEND_COLD void zend_verify_internal_return_error( const zend_function *zf, const zend_class_entry *ce, zval *value) { const zend_arg_info *arg_info = &zf->common.arg_info[-1]; const char *fname, *fsep, *fclass; const char *need_msg, *need_kind, *need_or_null, *given_msg, *given_kind; zend_verify_type_error_common( zf, arg_info, ce, value, &fname, &fsep, &fclass, &need_msg, &need_kind, &need_or_null, &given_msg, &given_kind); zend_error_noreturn(E_CORE_ERROR, "Return value of %s%s%s() must %s%s%s, %s%s returned", fclass, fsep, fname, need_msg, need_kind, need_or_null, given_msg, given_kind); } static ZEND_COLD void zend_verify_void_return_error(const zend_function *zf, const char *returned_msg, const char *returned_kind) { const char *fname = ZSTR_VAL(zf->common.function_name); const char *fsep; const char *fclass; if (zf->common.scope) { fsep = "::"; fclass = ZSTR_VAL(zf->common.scope->name); } else { fsep = ""; fclass = ""; } zend_type_error("%s%s%s() must not return a value, %s%s returned", fclass, fsep, fname, returned_msg, returned_kind); } static int zend_verify_internal_return_type(zend_function *zf, zval *ret) { zend_internal_arg_info *ret_info = zf->internal_function.arg_info - 1; zend_class_entry *ce = NULL; void *dummy_cache_slot = NULL; if (ZEND_TYPE_CODE(ret_info->type) == IS_VOID) { if (UNEXPECTED(Z_TYPE_P(ret) != IS_NULL)) { zend_verify_void_return_error(zf, zend_zval_type_name(ret), ""); return 0; } return 1; } if (UNEXPECTED(!zend_check_type(ret_info->type, ret, &ce, &dummy_cache_slot, NULL, NULL, 1))) { zend_verify_internal_return_error(zf, ce, ret); return 0; } return 1; } #endif static zend_always_inline void zend_verify_return_type(zend_function *zf, zval *ret, void **cache_slot) { zend_arg_info *ret_info = zf->common.arg_info - 1; zend_class_entry *ce = NULL; if (UNEXPECTED(!zend_check_type(ret_info->type, ret, &ce, cache_slot, NULL, NULL, 1))) { zend_verify_return_error(zf, ce, ret); } } static ZEND_COLD int zend_verify_missing_return_type(const zend_function *zf, void **cache_slot) { zend_arg_info *ret_info = zf->common.arg_info - 1; if (ZEND_TYPE_IS_SET(ret_info->type) && UNEXPECTED(ZEND_TYPE_CODE(ret_info->type) != IS_VOID)) { zend_class_entry *ce = NULL; if (ZEND_TYPE_IS_CLASS(ret_info->type)) { if (EXPECTED(*cache_slot)) { ce = (zend_class_entry*) *cache_slot; } else { ce = zend_fetch_class(ZEND_TYPE_NAME(ret_info->type), (ZEND_FETCH_CLASS_AUTO | ZEND_FETCH_CLASS_NO_AUTOLOAD)); if (ce) { *cache_slot = (void*)ce; } } } zend_verify_return_error(zf, ce, NULL); return 0; } return 1; } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_use_object_as_array(void) { zend_throw_error(NULL, "Cannot use object as array"); } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_illegal_offset(void) { zend_error(E_WARNING, "Illegal offset type"); } static zend_never_inline void zend_assign_to_object_dim(zval *object, zval *dim, zval *value OPLINE_DC EXECUTE_DATA_DC) { if (UNEXPECTED(!Z_OBJ_HT_P(object)->write_dimension)) { zend_use_object_as_array(); if (UNEXPECTED(RETURN_VALUE_USED(opline))) { ZVAL_UNDEF(EX_VAR(opline->result.var)); } return; } Z_OBJ_HT_P(object)->write_dimension(object, dim, value); if (UNEXPECTED(RETURN_VALUE_USED(opline))) { ZVAL_COPY(EX_VAR(opline->result.var), value); } } static zend_never_inline void zend_binary_assign_op_obj_dim(zval *object, zval *property, zval *value, zval *retval, binary_op_type binary_op EXECUTE_DATA_DC) { zval *z; zval rv, res; if (Z_OBJ_HT_P(object)->read_dimension && (z = Z_OBJ_HT_P(object)->read_dimension(object, property, BP_VAR_R, &rv)) != NULL) { if (Z_TYPE_P(z) == IS_OBJECT && Z_OBJ_HT_P(z)->get) { zval rv2; zval *value = Z_OBJ_HT_P(z)->get(z, &rv2); if (z == &rv) { zval_ptr_dtor(&rv); } ZVAL_COPY_VALUE(z, value); } binary_op(&res, Z_ISREF_P(z) ? Z_REFVAL_P(z) : z, value); Z_OBJ_HT_P(object)->write_dimension(object, property, &res); if (z == &rv) { zval_ptr_dtor(&rv); } if (retval) { ZVAL_COPY(retval, &res); } zval_ptr_dtor(&res); } else { zend_use_object_as_array(); if (retval) { ZVAL_NULL(retval); } } } static zend_never_inline zend_long zend_check_string_offset(zval *dim, int type EXECUTE_DATA_DC) { zend_long offset; try_again: if (UNEXPECTED(Z_TYPE_P(dim) != IS_LONG)) { switch(Z_TYPE_P(dim)) { case IS_STRING: if (IS_LONG == is_numeric_string(Z_STRVAL_P(dim), Z_STRLEN_P(dim), NULL, NULL, -1)) { break; } if (type != BP_VAR_UNSET) { zend_error(E_WARNING, "Illegal string offset '%s'", Z_STRVAL_P(dim)); } break; case IS_UNDEF: zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC); case IS_DOUBLE: case IS_NULL: case IS_FALSE: case IS_TRUE: zend_error(E_NOTICE, "String offset cast occurred"); break; case IS_REFERENCE: dim = Z_REFVAL_P(dim); goto try_again; default: zend_illegal_offset(); break; } offset = zval_get_long_func(dim); } else { offset = Z_LVAL_P(dim); } return offset; } static zend_never_inline ZEND_COLD void zend_wrong_string_offset(EXECUTE_DATA_D) { const char *msg = NULL; const zend_op *opline = EX(opline); const zend_op *end; uint32_t var; if (UNEXPECTED(EG(exception) != NULL)) { return; } switch (opline->opcode) { case ZEND_ASSIGN_ADD: case ZEND_ASSIGN_SUB: case ZEND_ASSIGN_MUL: case ZEND_ASSIGN_DIV: case ZEND_ASSIGN_MOD: case ZEND_ASSIGN_SL: case ZEND_ASSIGN_SR: case ZEND_ASSIGN_CONCAT: case ZEND_ASSIGN_BW_OR: case ZEND_ASSIGN_BW_AND: case ZEND_ASSIGN_BW_XOR: case ZEND_ASSIGN_POW: msg = "Cannot use assign-op operators with string offsets"; break; case ZEND_FETCH_DIM_W: case ZEND_FETCH_DIM_RW: case ZEND_FETCH_DIM_FUNC_ARG: case ZEND_FETCH_DIM_UNSET: case ZEND_FETCH_LIST_W: /* TODO: Encode the "reason" into opline->extended_value??? */ var = opline->result.var; opline++; end = EG(current_execute_data)->func->op_array.opcodes + EG(current_execute_data)->func->op_array.last; while (opline < end) { if (opline->op1_type == IS_VAR && opline->op1.var == var) { switch (opline->opcode) { case ZEND_ASSIGN_ADD: case ZEND_ASSIGN_SUB: case ZEND_ASSIGN_MUL: case ZEND_ASSIGN_DIV: case ZEND_ASSIGN_MOD: case ZEND_ASSIGN_SL: case ZEND_ASSIGN_SR: case ZEND_ASSIGN_CONCAT: case ZEND_ASSIGN_BW_OR: case ZEND_ASSIGN_BW_AND: case ZEND_ASSIGN_BW_XOR: case ZEND_ASSIGN_POW: if (opline->extended_value == ZEND_ASSIGN_OBJ) { msg = "Cannot use string offset as an object"; } else if (opline->extended_value == ZEND_ASSIGN_DIM) { msg = "Cannot use string offset as an array"; } else { msg = "Cannot use assign-op operators with string offsets"; } break; case ZEND_PRE_INC_OBJ: case ZEND_PRE_DEC_OBJ: case ZEND_POST_INC_OBJ: case ZEND_POST_DEC_OBJ: case ZEND_PRE_INC: case ZEND_PRE_DEC: case ZEND_POST_INC: case ZEND_POST_DEC: msg = "Cannot increment/decrement string offsets"; break; case ZEND_FETCH_DIM_W: case ZEND_FETCH_DIM_RW: case ZEND_FETCH_DIM_FUNC_ARG: case ZEND_FETCH_DIM_UNSET: case ZEND_FETCH_LIST_W: case ZEND_ASSIGN_DIM: msg = "Cannot use string offset as an array"; break; case ZEND_FETCH_OBJ_W: case ZEND_FETCH_OBJ_RW: case ZEND_FETCH_OBJ_FUNC_ARG: case ZEND_FETCH_OBJ_UNSET: case ZEND_ASSIGN_OBJ: msg = "Cannot use string offset as an object"; break; case ZEND_ASSIGN_REF: case ZEND_ADD_ARRAY_ELEMENT: case ZEND_INIT_ARRAY: case ZEND_MAKE_REF: msg = "Cannot create references to/from string offsets"; break; case ZEND_RETURN_BY_REF: case ZEND_VERIFY_RETURN_TYPE: msg = "Cannot return string offsets by reference"; break; case ZEND_UNSET_DIM: case ZEND_UNSET_OBJ: msg = "Cannot unset string offsets"; break; case ZEND_YIELD: msg = "Cannot yield string offsets by reference"; break; case ZEND_SEND_REF: case ZEND_SEND_VAR_EX: case ZEND_SEND_FUNC_ARG: msg = "Only variables can be passed by reference"; break; case ZEND_FE_RESET_RW: msg = "Cannot iterate on string offsets by reference"; break; EMPTY_SWITCH_DEFAULT_CASE(); } break; } if (opline->op2_type == IS_VAR && opline->op2.var == var) { ZEND_ASSERT(opline->opcode == ZEND_ASSIGN_REF); msg = "Cannot create references to/from string offsets"; break; } opline++; } break; EMPTY_SWITCH_DEFAULT_CASE(); } ZEND_ASSERT(msg != NULL); zend_throw_error(NULL, "%s", msg); } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_wrong_property_read(zval *property) { zend_string *tmp_property_name; zend_string *property_name = zval_get_tmp_string(property, &tmp_property_name); zend_error(E_NOTICE, "Trying to get property '%s' of non-object", ZSTR_VAL(property_name)); zend_tmp_string_release(tmp_property_name); } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_wrong_property_unset(zval *property) { zend_string *tmp_property_name; zend_string *property_name = zval_get_tmp_string(property, &tmp_property_name); zend_error(E_NOTICE, "Trying to unset property '%s' of non-object", ZSTR_VAL(property_name)); zend_tmp_string_release(tmp_property_name); } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_wrong_property_check(zval *property) { zend_string *tmp_property_name; zend_string *property_name = zval_get_tmp_string(property, &tmp_property_name); zend_error(E_NOTICE, "Trying to check property '%s' of non-object", ZSTR_VAL(property_name)); zend_tmp_string_release(tmp_property_name); } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_deprecated_function(const zend_function *fbc) { zend_error(E_DEPRECATED, "Function %s%s%s() is deprecated", fbc->common.scope ? ZSTR_VAL(fbc->common.scope->name) : "", fbc->common.scope ? "::" : "", ZSTR_VAL(fbc->common.function_name)); } static zend_never_inline void zend_assign_to_string_offset(zval *str, zval *dim, zval *value OPLINE_DC EXECUTE_DATA_DC) { zend_uchar c; size_t string_len; zend_long offset; offset = zend_check_string_offset(dim, BP_VAR_W EXECUTE_DATA_CC); if (offset < -(zend_long)Z_STRLEN_P(str)) { /* Error on negative offset */ zend_error(E_WARNING, "Illegal string offset: " ZEND_LONG_FMT, offset); if (UNEXPECTED(RETURN_VALUE_USED(opline))) { ZVAL_NULL(EX_VAR(opline->result.var)); } return; } if (Z_TYPE_P(value) != IS_STRING) { /* Convert to string, just the time to pick the 1st byte */ zend_string *tmp = zval_get_string_func(value); string_len = ZSTR_LEN(tmp); c = (zend_uchar)ZSTR_VAL(tmp)[0]; zend_string_release_ex(tmp, 0); } else { string_len = Z_STRLEN_P(value); c = (zend_uchar)Z_STRVAL_P(value)[0]; } if (string_len == 0) { /* Error on empty input string */ zend_error(E_WARNING, "Cannot assign an empty string to a string offset"); if (UNEXPECTED(RETURN_VALUE_USED(opline))) { ZVAL_NULL(EX_VAR(opline->result.var)); } return; } if (offset < 0) { /* Handle negative offset */ offset += (zend_long)Z_STRLEN_P(str); } if ((size_t)offset >= Z_STRLEN_P(str)) { /* Extend string if needed */ zend_long old_len = Z_STRLEN_P(str); ZVAL_NEW_STR(str, zend_string_extend(Z_STR_P(str), offset + 1, 0)); memset(Z_STRVAL_P(str) + old_len, ' ', offset - old_len); Z_STRVAL_P(str)[offset+1] = 0; } else if (!Z_REFCOUNTED_P(str)) { ZVAL_NEW_STR(str, zend_string_init(Z_STRVAL_P(str), Z_STRLEN_P(str), 0)); } else if (Z_REFCOUNT_P(str) > 1) { Z_DELREF_P(str); ZVAL_NEW_STR(str, zend_string_init(Z_STRVAL_P(str), Z_STRLEN_P(str), 0)); } else { zend_string_forget_hash_val(Z_STR_P(str)); } Z_STRVAL_P(str)[offset] = c; if (UNEXPECTED(RETURN_VALUE_USED(opline))) { /* Return the new character */ ZVAL_INTERNED_STR(EX_VAR(opline->result.var), ZSTR_CHAR(c)); } } static zend_never_inline void zend_post_incdec_overloaded_property(zval *object, zval *property, void **cache_slot, int inc OPLINE_DC EXECUTE_DATA_DC) { if (Z_OBJ_HT_P(object)->read_property && Z_OBJ_HT_P(object)->write_property) { zval rv, obj; zval *z; zval z_copy; ZVAL_OBJ(&obj, Z_OBJ_P(object)); Z_ADDREF(obj); z = Z_OBJ_HT(obj)->read_property(&obj, property, BP_VAR_R, cache_slot, &rv); if (UNEXPECTED(EG(exception))) { OBJ_RELEASE(Z_OBJ(obj)); ZVAL_UNDEF(EX_VAR(opline->result.var)); return; } if (UNEXPECTED(Z_TYPE_P(z) == IS_OBJECT) && Z_OBJ_HT_P(z)->get) { zval rv2; zval *value = Z_OBJ_HT_P(z)->get(z, &rv2); if (z == &rv) { zval_ptr_dtor(&rv); } ZVAL_COPY_VALUE(z, value); } ZVAL_COPY_DEREF(&z_copy, z); ZVAL_COPY(EX_VAR(opline->result.var), &z_copy); if (inc) { increment_function(&z_copy); } else { decrement_function(&z_copy); } Z_OBJ_HT(obj)->write_property(&obj, property, &z_copy, cache_slot); OBJ_RELEASE(Z_OBJ(obj)); zval_ptr_dtor(&z_copy); zval_ptr_dtor(z); } else { zend_error(E_WARNING, "Attempt to increment/decrement property of non-object"); ZVAL_NULL(EX_VAR(opline->result.var)); } } static zend_never_inline void zend_pre_incdec_overloaded_property(zval *object, zval *property, void **cache_slot, int inc OPLINE_DC EXECUTE_DATA_DC) { zval rv; if (Z_OBJ_HT_P(object)->read_property && Z_OBJ_HT_P(object)->write_property) { zval *z, obj; zval z_copy; ZVAL_OBJ(&obj, Z_OBJ_P(object)); Z_ADDREF(obj); z = Z_OBJ_HT(obj)->read_property(&obj, property, BP_VAR_R, cache_slot, &rv); if (UNEXPECTED(EG(exception))) { OBJ_RELEASE(Z_OBJ(obj)); if (UNEXPECTED(RETURN_VALUE_USED(opline))) { ZVAL_NULL(EX_VAR(opline->result.var)); } return; } if (UNEXPECTED(Z_TYPE_P(z) == IS_OBJECT) && Z_OBJ_HT_P(z)->get) { zval rv2; zval *value = Z_OBJ_HT_P(z)->get(z, &rv2); if (z == &rv) { zval_ptr_dtor(&rv); } ZVAL_COPY_VALUE(z, value); } ZVAL_COPY_DEREF(&z_copy, z); if (inc) { increment_function(&z_copy); } else { decrement_function(&z_copy); } if (UNEXPECTED(RETURN_VALUE_USED(opline))) { ZVAL_COPY(EX_VAR(opline->result.var), &z_copy); } Z_OBJ_HT(obj)->write_property(&obj, property, &z_copy, cache_slot); OBJ_RELEASE(Z_OBJ(obj)); zval_ptr_dtor(&z_copy); zval_ptr_dtor(z); } else { zend_error(E_WARNING, "Attempt to increment/decrement property of non-object"); if (UNEXPECTED(RETURN_VALUE_USED(opline))) { ZVAL_NULL(EX_VAR(opline->result.var)); } } } static zend_never_inline void zend_assign_op_overloaded_property(zval *object, zval *property, void **cache_slot, zval *value, binary_op_type binary_op OPLINE_DC EXECUTE_DATA_DC) { zval *z; zval rv, obj, res; ZVAL_OBJ(&obj, Z_OBJ_P(object)); Z_ADDREF(obj); if (EXPECTED(Z_OBJ_HT(obj)->read_property)) { z = Z_OBJ_HT(obj)->read_property(&obj, property, BP_VAR_R, cache_slot, &rv); if (UNEXPECTED(EG(exception))) { OBJ_RELEASE(Z_OBJ(obj)); if (UNEXPECTED(RETURN_VALUE_USED(opline))) { ZVAL_UNDEF(EX_VAR(opline->result.var)); } return; } if (Z_TYPE_P(z) == IS_OBJECT && Z_OBJ_HT_P(z)->get) { zval rv2; zval *value = Z_OBJ_HT_P(z)->get(z, &rv2); if (z == &rv) { zval_ptr_dtor(&rv); } ZVAL_COPY_VALUE(z, value); } binary_op(&res, z, value); Z_OBJ_HT(obj)->write_property(&obj, property, &res, cache_slot); if (UNEXPECTED(RETURN_VALUE_USED(opline))) { ZVAL_COPY(EX_VAR(opline->result.var), &res); } zval_ptr_dtor(z); zval_ptr_dtor(&res); } else { zend_error(E_WARNING, "Attempt to assign property of non-object"); if (UNEXPECTED(RETURN_VALUE_USED(opline))) { ZVAL_NULL(EX_VAR(opline->result.var)); } } OBJ_RELEASE(Z_OBJ(obj)); } /* Utility Functions for Extensions */ static void zend_extension_statement_handler(const zend_extension *extension, zend_execute_data *frame) { if (extension->statement_handler) { extension->statement_handler(frame); } } static void zend_extension_fcall_begin_handler(const zend_extension *extension, zend_execute_data *frame) { if (extension->fcall_begin_handler) { extension->fcall_begin_handler(frame); } } static void zend_extension_fcall_end_handler(const zend_extension *extension, zend_execute_data *frame) { if (extension->fcall_end_handler) { extension->fcall_end_handler(frame); } } static zend_always_inline HashTable *zend_get_target_symbol_table(int fetch_type EXECUTE_DATA_DC) { HashTable *ht; if (EXPECTED(fetch_type & (ZEND_FETCH_GLOBAL_LOCK | ZEND_FETCH_GLOBAL))) { ht = &EG(symbol_table); } else { ZEND_ASSERT(fetch_type & ZEND_FETCH_LOCAL); if (!(EX_CALL_INFO() & ZEND_CALL_HAS_SYMBOL_TABLE)) { zend_rebuild_symbol_table(); } ht = EX(symbol_table); } return ht; } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_undefined_offset(zend_long lval) { zend_error(E_NOTICE, "Undefined offset: " ZEND_LONG_FMT, lval); } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_undefined_index(const zend_string *offset) { zend_error(E_NOTICE, "Undefined index: %s", ZSTR_VAL(offset)); } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_undefined_method(const zend_class_entry *ce, const zend_string *method) { zend_throw_error(NULL, "Call to undefined method %s::%s()", ZSTR_VAL(ce->name), ZSTR_VAL(method)); } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_invalid_method_call(zval *object, zval *function_name) { zend_throw_error(NULL, "Call to a member function %s() on %s", Z_STRVAL_P(function_name), zend_get_type_by_const(Z_TYPE_P(object))); } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_non_static_method_call(const zend_function *fbc) { if (fbc->common.fn_flags & ZEND_ACC_ALLOW_STATIC) { zend_error(E_DEPRECATED, "Non-static method %s::%s() should not be called statically", ZSTR_VAL(fbc->common.scope->name), ZSTR_VAL(fbc->common.function_name)); } else { zend_throw_error( zend_ce_error, "Non-static method %s::%s() cannot be called statically", ZSTR_VAL(fbc->common.scope->name), ZSTR_VAL(fbc->common.function_name)); } } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_param_must_be_ref(const zend_function *func, uint32_t arg_num) { zend_error(E_WARNING, "Parameter %d to %s%s%s() expected to be a reference, value given", arg_num, func->common.scope ? ZSTR_VAL(func->common.scope->name) : "", func->common.scope ? "::" : "", ZSTR_VAL(func->common.function_name)); } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_use_scalar_as_array(void) { zend_error(E_WARNING, "Cannot use a scalar value as an array"); } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_cannot_add_element(void) { zend_error(E_WARNING, "Cannot add element to the array as the next element is already occupied"); } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_use_resource_as_offset(const zval *dim) { zend_error(E_NOTICE, "Resource ID#%d used as offset, casting to integer (%d)", Z_RES_HANDLE_P(dim), Z_RES_HANDLE_P(dim)); } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_use_new_element_for_string(void) { zend_throw_error(NULL, "[] operator not supported for strings"); } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_access_undefined_propery_in_overloaded_object(void) { zend_throw_error(NULL, "Cannot access undefined property for object with overloaded property access"); } static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_unsupported_property_reference(void) { zend_error(E_WARNING, "This object doesn't support property references"); } static zend_always_inline zval *zend_fetch_dimension_address_inner(HashTable *ht, const zval *dim, int dim_type, int type EXECUTE_DATA_DC) { zval *retval = NULL; zend_string *offset_key; zend_ulong hval; try_again: if (EXPECTED(Z_TYPE_P(dim) == IS_LONG)) { hval = Z_LVAL_P(dim); num_index: ZEND_HASH_INDEX_FIND(ht, hval, retval, num_undef); return retval; num_undef: switch (type) { case BP_VAR_R: zend_undefined_offset(hval); /* break missing intentionally */ case BP_VAR_UNSET: case BP_VAR_IS: retval = &EG(uninitialized_zval); break; case BP_VAR_RW: zend_undefined_offset(hval); retval = zend_hash_index_update(ht, hval, &EG(uninitialized_zval)); break; case BP_VAR_W: retval = zend_hash_index_add_new(ht, hval, &EG(uninitialized_zval)); break; } } else if (EXPECTED(Z_TYPE_P(dim) == IS_STRING)) { offset_key = Z_STR_P(dim); if (dim_type != IS_CONST) { if (ZEND_HANDLE_NUMERIC(offset_key, hval)) { goto num_index; } } str_index: retval = zend_hash_find_ex(ht, offset_key, dim_type == IS_CONST); if (retval) { /* support for $GLOBALS[...] */ if (UNEXPECTED(Z_TYPE_P(retval) == IS_INDIRECT)) { retval = Z_INDIRECT_P(retval); if (UNEXPECTED(Z_TYPE_P(retval) == IS_UNDEF)) { switch (type) { case BP_VAR_R: zend_undefined_index(offset_key); /* break missing intentionally */ case BP_VAR_UNSET: case BP_VAR_IS: retval = &EG(uninitialized_zval); break; case BP_VAR_RW: zend_undefined_index(offset_key); /* break missing intentionally */ case BP_VAR_W: ZVAL_NULL(retval); break; } } } } else { switch (type) { case BP_VAR_R: zend_undefined_index(offset_key); /* break missing intentionally */ case BP_VAR_UNSET: case BP_VAR_IS: retval = &EG(uninitialized_zval); break; case BP_VAR_RW: zend_undefined_index(offset_key); retval = zend_hash_update(ht, offset_key, &EG(uninitialized_zval)); break; case BP_VAR_W: retval = zend_hash_add_new(ht, offset_key, &EG(uninitialized_zval)); break; } } } else { switch (Z_TYPE_P(dim)) { case IS_UNDEF: zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC); /* break missing intentionally */ case IS_NULL: offset_key = ZSTR_EMPTY_ALLOC(); goto str_index; case IS_DOUBLE: hval = zend_dval_to_lval(Z_DVAL_P(dim)); goto num_index; case IS_RESOURCE: zend_use_resource_as_offset(dim); hval = Z_RES_HANDLE_P(dim); goto num_index; case IS_FALSE: hval = 0; goto num_index; case IS_TRUE: hval = 1; goto num_index; case IS_REFERENCE: dim = Z_REFVAL_P(dim); goto try_again; default: zend_illegal_offset(); retval = (type == BP_VAR_W || type == BP_VAR_RW) ? NULL : &EG(uninitialized_zval); } } return retval; } static zend_never_inline zval* ZEND_FASTCALL zend_fetch_dimension_address_inner_W(HashTable *ht, const zval *dim EXECUTE_DATA_DC) { return zend_fetch_dimension_address_inner(ht, dim, IS_TMP_VAR, BP_VAR_W EXECUTE_DATA_CC); } static zend_never_inline zval* ZEND_FASTCALL zend_fetch_dimension_address_inner_W_CONST(HashTable *ht, const zval *dim EXECUTE_DATA_DC) { return zend_fetch_dimension_address_inner(ht, dim, IS_CONST, BP_VAR_W EXECUTE_DATA_CC); } static zend_never_inline zval* ZEND_FASTCALL zend_fetch_dimension_address_inner_RW(HashTable *ht, const zval *dim EXECUTE_DATA_DC) { return zend_fetch_dimension_address_inner(ht, dim, IS_TMP_VAR, BP_VAR_RW EXECUTE_DATA_CC); } static zend_never_inline zval* ZEND_FASTCALL zend_fetch_dimension_address_inner_RW_CONST(HashTable *ht, const zval *dim EXECUTE_DATA_DC) { return zend_fetch_dimension_address_inner(ht, dim, IS_CONST, BP_VAR_RW EXECUTE_DATA_CC); } static zend_always_inline void zend_fetch_dimension_address(zval *result, zval *container, zval *dim, int dim_type, int type EXECUTE_DATA_DC) { zval *retval; if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) { try_array: SEPARATE_ARRAY(container); fetch_from_array: if (dim == NULL) { retval = zend_hash_next_index_insert(Z_ARRVAL_P(container), &EG(uninitialized_zval)); if (UNEXPECTED(retval == NULL)) { zend_cannot_add_element(); ZVAL_ERROR(result); return; } } else { retval = zend_fetch_dimension_address_inner(Z_ARRVAL_P(container), dim, dim_type, type EXECUTE_DATA_CC); if (UNEXPECTED(!retval)) { ZVAL_ERROR(result); return; } } ZVAL_INDIRECT(result, retval); return; } else if (EXPECTED(Z_TYPE_P(container) == IS_REFERENCE)) { container = Z_REFVAL_P(container); if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) { goto try_array; } } if (UNEXPECTED(Z_TYPE_P(container) == IS_STRING)) { if (dim == NULL) { zend_use_new_element_for_string(); } else { zend_check_string_offset(dim, type EXECUTE_DATA_CC); zend_wrong_string_offset(EXECUTE_DATA_C); } ZVAL_ERROR(result); } else if (EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) { if (/*dim_type == IS_CV &&*/ dim && UNEXPECTED(Z_TYPE_P(dim) == IS_UNDEF)) { zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC); dim = &EG(uninitialized_zval); } if (!Z_OBJ_HT_P(container)->read_dimension) { zend_use_object_as_array(); ZVAL_ERROR(result); } else { if (dim_type == IS_CONST && Z_EXTRA_P(dim) == ZEND_EXTRA_VALUE) { dim++; } retval = Z_OBJ_HT_P(container)->read_dimension(container, dim, type, result); if (UNEXPECTED(retval == &EG(uninitialized_zval))) { zend_class_entry *ce = Z_OBJCE_P(container); ZVAL_NULL(result); zend_error(E_NOTICE, "Indirect modification of overloaded element of %s has no effect", ZSTR_VAL(ce->name)); } else if (EXPECTED(retval && Z_TYPE_P(retval) != IS_UNDEF)) { if (!Z_ISREF_P(retval)) { if (result != retval) { ZVAL_COPY(result, retval); retval = result; } if (Z_TYPE_P(retval) != IS_OBJECT) { zend_class_entry *ce = Z_OBJCE_P(container); zend_error(E_NOTICE, "Indirect modification of overloaded element of %s has no effect", ZSTR_VAL(ce->name)); } } else if (UNEXPECTED(Z_REFCOUNT_P(retval) == 1)) { ZVAL_UNREF(retval); } if (result != retval) { ZVAL_INDIRECT(result, retval); } } else { ZVAL_ERROR(result); } } } else { if (type != BP_VAR_W && UNEXPECTED(Z_TYPE_P(container) == IS_UNDEF)) { zval_undefined_cv(EX(opline)->op1.var EXECUTE_DATA_CC); } if (/*dim_type == IS_CV &&*/ dim && UNEXPECTED(Z_TYPE_P(dim) == IS_UNDEF)) { zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC); } if (EXPECTED(Z_TYPE_P(container) <= IS_FALSE)) { if (type != BP_VAR_UNSET) { array_init(container); goto fetch_from_array; } else { /* for read-mode only */ ZVAL_NULL(result); } } else if (EXPECTED(Z_ISERROR_P(container))) { ZVAL_ERROR(result); } else { if (type == BP_VAR_UNSET) { zend_error(E_WARNING, "Cannot unset offset in a non-array variable"); ZVAL_NULL(result); } else { zend_use_scalar_as_array(); ZVAL_ERROR(result); } } } } static zend_never_inline void ZEND_FASTCALL zend_fetch_dimension_address_W(zval *container_ptr, zval *dim, int dim_type OPLINE_DC EXECUTE_DATA_DC) { zval *result = EX_VAR(opline->result.var); zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_W EXECUTE_DATA_CC); } static zend_never_inline void ZEND_FASTCALL zend_fetch_dimension_address_RW(zval *container_ptr, zval *dim, int dim_type OPLINE_DC EXECUTE_DATA_DC) { zval *result = EX_VAR(opline->result.var); zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_RW EXECUTE_DATA_CC); } static zend_never_inline void ZEND_FASTCALL zend_fetch_dimension_address_UNSET(zval *container_ptr, zval *dim, int dim_type OPLINE_DC EXECUTE_DATA_DC) { zval *result = EX_VAR(opline->result.var); zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_UNSET EXECUTE_DATA_CC); } static zend_always_inline void zend_fetch_dimension_address_read(zval *result, zval *container, zval *dim, int dim_type, int type, int support_strings, int slow EXECUTE_DATA_DC) { zval *retval; if (!slow) { if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) { try_array: retval = zend_fetch_dimension_address_inner(Z_ARRVAL_P(container), dim, dim_type, type EXECUTE_DATA_CC); ZVAL_COPY_DEREF(result, retval); return; } else if (EXPECTED(Z_TYPE_P(container) == IS_REFERENCE)) { container = Z_REFVAL_P(container); if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) { goto try_array; } } } if (support_strings && EXPECTED(Z_TYPE_P(container) == IS_STRING)) { zend_long offset; try_string_offset: if (UNEXPECTED(Z_TYPE_P(dim) != IS_LONG)) { switch (Z_TYPE_P(dim)) { /* case IS_LONG: */ case IS_STRING: if (IS_LONG == is_numeric_string(Z_STRVAL_P(dim), Z_STRLEN_P(dim), NULL, NULL, -1)) { break; } if (type == BP_VAR_IS) { ZVAL_NULL(result); return; } zend_error(E_WARNING, "Illegal string offset '%s'", Z_STRVAL_P(dim)); break; case IS_UNDEF: zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC); case IS_DOUBLE: case IS_NULL: case IS_FALSE: case IS_TRUE: if (type != BP_VAR_IS) { zend_error(E_NOTICE, "String offset cast occurred"); } break; case IS_REFERENCE: dim = Z_REFVAL_P(dim); goto try_string_offset; default: zend_illegal_offset(); break; } offset = zval_get_long_func(dim); } else { offset = Z_LVAL_P(dim); } if (UNEXPECTED(Z_STRLEN_P(container) < (size_t)((offset < 0) ? -offset : (offset + 1)))) { if (type != BP_VAR_IS) { zend_error(E_NOTICE, "Uninitialized string offset: " ZEND_LONG_FMT, offset); ZVAL_EMPTY_STRING(result); } else { ZVAL_NULL(result); } } else { zend_uchar c; zend_long real_offset; real_offset = (UNEXPECTED(offset < 0)) /* Handle negative offset */ ? (zend_long)Z_STRLEN_P(container) + offset : offset; c = (zend_uchar)Z_STRVAL_P(container)[real_offset]; ZVAL_INTERNED_STR(result, ZSTR_CHAR(c)); } } else if (EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) { if (/*dim_type == IS_CV &&*/ UNEXPECTED(Z_TYPE_P(dim) == IS_UNDEF)) { zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC); dim = &EG(uninitialized_zval); } if (!Z_OBJ_HT_P(container)->read_dimension) { zend_use_object_as_array(); ZVAL_NULL(result); } else { if (dim_type == IS_CONST && Z_EXTRA_P(dim) == ZEND_EXTRA_VALUE) { dim++; } retval = Z_OBJ_HT_P(container)->read_dimension(container, dim, type, result); ZEND_ASSERT(result != NULL); if (retval) { if (result != retval) { ZVAL_COPY_DEREF(result, retval); } else if (UNEXPECTED(Z_ISREF_P(retval))) { zend_unwrap_reference(result); } } else { ZVAL_NULL(result); } } } else { if (type != BP_VAR_IS && UNEXPECTED(Z_TYPE_P(container) == IS_UNDEF)) { zval_undefined_cv(EX(opline)->op1.var EXECUTE_DATA_CC); } if (/*dim_type == IS_CV &&*/ UNEXPECTED(Z_TYPE_P(dim) == IS_UNDEF)) { zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC); } ZVAL_NULL(result); } } static zend_never_inline void ZEND_FASTCALL zend_fetch_dimension_address_read_R(zval *container, zval *dim, int dim_type OPLINE_DC EXECUTE_DATA_DC) { zval *result = EX_VAR(opline->result.var); zend_fetch_dimension_address_read(result, container, dim, dim_type, BP_VAR_R, 1, 0 EXECUTE_DATA_CC); } static zend_never_inline void zend_fetch_dimension_address_read_R_slow(zval *container, zval *dim OPLINE_DC EXECUTE_DATA_DC) { zval *result = EX_VAR(opline->result.var); zend_fetch_dimension_address_read(result, container, dim, IS_CV, BP_VAR_R, 1, 1 EXECUTE_DATA_CC); } static zend_never_inline void ZEND_FASTCALL zend_fetch_dimension_address_read_IS(zval *container, zval *dim, int dim_type OPLINE_DC EXECUTE_DATA_DC) { zval *result = EX_VAR(opline->result.var); zend_fetch_dimension_address_read(result, container, dim, dim_type, BP_VAR_IS, 1, 0 EXECUTE_DATA_CC); } static zend_never_inline void ZEND_FASTCALL zend_fetch_dimension_address_LIST_r(zval *container, zval *dim, int dim_type OPLINE_DC EXECUTE_DATA_DC) { zval *result = EX_VAR(opline->result.var); zend_fetch_dimension_address_read(result, container, dim, dim_type, BP_VAR_R, 0, 0 EXECUTE_DATA_CC); } ZEND_API void zend_fetch_dimension_const(zval *result, zval *container, zval *dim, int type) { zend_fetch_dimension_address_read(result, container, dim, IS_TMP_VAR, type, 1, 0 NO_EXECUTE_DATA_CC); } static zend_never_inline zval* ZEND_FASTCALL zend_find_array_dim_slow(HashTable *ht, zval *offset EXECUTE_DATA_DC) { zend_ulong hval; if (Z_TYPE_P(offset) == IS_DOUBLE) { hval = zend_dval_to_lval(Z_DVAL_P(offset)); num_idx: return zend_hash_index_find(ht, hval); } else if (Z_TYPE_P(offset) == IS_NULL) { str_idx: return zend_hash_find_ex_ind(ht, ZSTR_EMPTY_ALLOC(), 1); } else if (Z_TYPE_P(offset) == IS_FALSE) { hval = 0; goto num_idx; } else if (Z_TYPE_P(offset) == IS_TRUE) { hval = 1; goto num_idx; } else if (Z_TYPE_P(offset) == IS_RESOURCE) { hval = Z_RES_HANDLE_P(offset); goto num_idx; } else if (/*OP2_TYPE == IS_CV &&*/ Z_TYPE_P(offset) == IS_UNDEF) { zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC); goto str_idx; } else { zend_error(E_WARNING, "Illegal offset type in isset or empty"); return NULL; } } static zend_never_inline int ZEND_FASTCALL zend_isset_dim_slow(zval *container, zval *offset EXECUTE_DATA_DC) { if (/*OP2_TYPE == IS_CV &&*/ UNEXPECTED(Z_TYPE_P(offset) == IS_UNDEF)) { zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC); offset = &EG(uninitialized_zval); } if (/*OP1_TYPE != IS_CONST &&*/ EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) { if (EXPECTED(Z_OBJ_HT_P(container)->has_dimension)) { return Z_OBJ_HT_P(container)->has_dimension(container, offset, 0); } else { zend_use_object_as_array(); return 0; } } else if (EXPECTED(Z_TYPE_P(container) == IS_STRING)) { /* string offsets */ zend_long lval; if (EXPECTED(Z_TYPE_P(offset) == IS_LONG)) { lval = Z_LVAL_P(offset); str_offset: if (UNEXPECTED(lval < 0)) { /* Handle negative offset */ lval += (zend_long)Z_STRLEN_P(container); } if (EXPECTED(lval >= 0) && (size_t)lval < Z_STRLEN_P(container)) { return 1; } else { return 0; } } else { /*if (OP2_TYPE & (IS_CV|IS_VAR)) {*/ ZVAL_DEREF(offset); /*}*/ if (Z_TYPE_P(offset) < IS_STRING /* simple scalar types */ || (Z_TYPE_P(offset) == IS_STRING /* or numeric string */ && IS_LONG == is_numeric_string(Z_STRVAL_P(offset), Z_STRLEN_P(offset), NULL, NULL, 0))) { lval = zval_get_long(offset); goto str_offset; } return 0; } } else { return 0; } } static zend_never_inline int ZEND_FASTCALL zend_isempty_dim_slow(zval *container, zval *offset EXECUTE_DATA_DC) { if (/*OP2_TYPE == IS_CV &&*/ UNEXPECTED(Z_TYPE_P(offset) == IS_UNDEF)) { zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC); offset = &EG(uninitialized_zval); } if (/*OP1_TYPE != IS_CONST &&*/ EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) { if (EXPECTED(Z_OBJ_HT_P(container)->has_dimension)) { return !Z_OBJ_HT_P(container)->has_dimension(container, offset, 1); } else { zend_use_object_as_array(); return 1; } } else if (EXPECTED(Z_TYPE_P(container) == IS_STRING)) { /* string offsets */ zend_long lval; if (EXPECTED(Z_TYPE_P(offset) == IS_LONG)) { lval = Z_LVAL_P(offset); str_offset: if (UNEXPECTED(lval < 0)) { /* Handle negative offset */ lval += (zend_long)Z_STRLEN_P(container); } if (EXPECTED(lval >= 0) && (size_t)lval < Z_STRLEN_P(container)) { return (Z_STRVAL_P(container)[lval] == '0'); } else { return 1; } } else { /*if (OP2_TYPE & (IS_CV|IS_VAR)) {*/ ZVAL_DEREF(offset); /*}*/ if (Z_TYPE_P(offset) < IS_STRING /* simple scalar types */ || (Z_TYPE_P(offset) == IS_STRING /* or numeric string */ && IS_LONG == is_numeric_string(Z_STRVAL_P(offset), Z_STRLEN_P(offset), NULL, NULL, 0))) { lval = zval_get_long(offset); goto str_offset; } return 1; } } else { return 1; } } static zend_always_inline void zend_fetch_property_address(zval *result, zval *container, uint32_t container_op_type, zval *prop_ptr, uint32_t prop_op_type, void **cache_slot, int type OPLINE_DC) { if (container_op_type != IS_UNUSED && UNEXPECTED(Z_TYPE_P(container) != IS_OBJECT)) { do { if (Z_ISREF_P(container)) { container = Z_REFVAL_P(container); if (EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) { break; } } /* this should modify object only if it's empty */ if (type == BP_VAR_UNSET || UNEXPECTED(!make_real_object_rw(container, prop_ptr OPLINE_CC))) { ZVAL_ERROR(result); return; } } while (0); } if (prop_op_type == IS_CONST && EXPECTED(Z_OBJCE_P(container) == CACHED_PTR_EX(cache_slot))) { uintptr_t prop_offset = (uintptr_t)CACHED_PTR_EX(cache_slot + 1); zend_object *zobj = Z_OBJ_P(container); zval *retval; if (EXPECTED(IS_VALID_PROPERTY_OFFSET(prop_offset))) { retval = OBJ_PROP(zobj, prop_offset); if (EXPECTED(Z_TYPE_P(retval) != IS_UNDEF)) { ZVAL_INDIRECT(result, retval); return; } } else if (EXPECTED(zobj->properties != NULL)) { if (UNEXPECTED(GC_REFCOUNT(zobj->properties) > 1)) { if (EXPECTED(!(GC_FLAGS(zobj->properties) & IS_ARRAY_IMMUTABLE))) { GC_DELREF(zobj->properties); } zobj->properties = zend_array_dup(zobj->properties); } retval = zend_hash_find_ex(zobj->properties, Z_STR_P(prop_ptr), 1); if (EXPECTED(retval)) { ZVAL_INDIRECT(result, retval); return; } } } if (EXPECTED(Z_OBJ_HT_P(container)->get_property_ptr_ptr)) { zval *ptr = Z_OBJ_HT_P(container)->get_property_ptr_ptr(container, prop_ptr, type, cache_slot); if (NULL == ptr) { if (EXPECTED(Z_OBJ_HT_P(container)->read_property)) { use_read_property: ptr = Z_OBJ_HT_P(container)->read_property(container, prop_ptr, type, cache_slot, result); if (ptr != result) { ZVAL_INDIRECT(result, ptr); } else if (UNEXPECTED(Z_ISREF_P(ptr) && Z_REFCOUNT_P(ptr) == 1)) { ZVAL_UNREF(ptr); } } else { zend_access_undefined_propery_in_overloaded_object(); ZVAL_ERROR(result); } } else { ZVAL_INDIRECT(result, ptr); } } else if (EXPECTED(Z_OBJ_HT_P(container)->read_property)) { goto use_read_property; } else { zend_unsupported_property_reference(); ZVAL_ERROR(result); } } static zend_never_inline void zend_fetch_this_var(int type OPLINE_DC EXECUTE_DATA_DC) { zval *result = EX_VAR(opline->result.var); switch (type) { case BP_VAR_R: if (EXPECTED(Z_TYPE(EX(This)) == IS_OBJECT)) { ZVAL_OBJ(result, Z_OBJ(EX(This))); Z_ADDREF_P(result); } else { ZVAL_NULL(result); zend_error(E_NOTICE,"Undefined variable: this"); } break; case BP_VAR_IS: if (EXPECTED(Z_TYPE(EX(This)) == IS_OBJECT)) { ZVAL_OBJ(result, Z_OBJ(EX(This))); Z_ADDREF_P(result); } else { ZVAL_NULL(result); } break; case BP_VAR_RW: case BP_VAR_W: ZVAL_UNDEF(result); zend_throw_error(NULL, "Cannot re-assign $this"); break; case BP_VAR_UNSET: ZVAL_UNDEF(result); zend_throw_error(NULL, "Cannot unset $this"); break; EMPTY_SWITCH_DEFAULT_CASE() } } #if ZEND_INTENSIVE_DEBUGGING #define CHECK_SYMBOL_TABLES() \ zend_hash_apply(&EG(symbol_table), zend_check_symbol); \ if (&EG(symbol_table)!=EX(symbol_table)) { \ zend_hash_apply(EX(symbol_table), zend_check_symbol); \ } static int zend_check_symbol(zval *pz) { if (Z_TYPE_P(pz) == IS_INDIRECT) { pz = Z_INDIRECT_P(pz); } if (Z_TYPE_P(pz) > 10) { fprintf(stderr, "Warning! %x has invalid type!\n", *pz); /* See http://support.microsoft.com/kb/190351 */ #ifdef ZEND_WIN32 fflush(stderr); #endif } else if (Z_TYPE_P(pz) == IS_ARRAY) { zend_hash_apply(Z_ARRVAL_P(pz), zend_check_symbol); } else if (Z_TYPE_P(pz) == IS_OBJECT) { /* OBJ-TBI - doesn't support new object model! */ zend_hash_apply(Z_OBJPROP_P(pz), zend_check_symbol); } return 0; } #else #define CHECK_SYMBOL_TABLES() #endif ZEND_API void execute_internal(zend_execute_data *execute_data, zval *return_value) { execute_data->func->internal_function.handler(execute_data, return_value); } ZEND_API void zend_clean_and_cache_symbol_table(zend_array *symbol_table) /* {{{ */ { if (EG(symtable_cache_ptr) >= EG(symtable_cache_limit)) { zend_array_destroy(symbol_table); } else { /* clean before putting into the cache, since clean could call dtors, which could use cached hash */ zend_symtable_clean(symbol_table); *(++EG(symtable_cache_ptr)) = symbol_table; } } /* }}} */ static zend_always_inline void i_free_compiled_variables(zend_execute_data *execute_data) /* {{{ */ { zval *cv = EX_VAR_NUM(0); int count = EX(func)->op_array.last_var; while (EXPECTED(count != 0)) { if (Z_REFCOUNTED_P(cv)) { zend_refcounted *r = Z_COUNTED_P(cv); if (!GC_DELREF(r)) { ZVAL_NULL(cv); rc_dtor_func(r); } else { gc_check_possible_root(r); } } cv++; count--; } } /* }}} */ ZEND_API void zend_free_compiled_variables(zend_execute_data *execute_data) /* {{{ */ { i_free_compiled_variables(execute_data); } /* }}} */ #define ZEND_VM_INTERRUPT_CHECK() do { \ if (UNEXPECTED(EG(vm_interrupt))) { \ ZEND_VM_INTERRUPT(); \ } \ } while (0) #define ZEND_VM_LOOP_INTERRUPT_CHECK() do { \ if (UNEXPECTED(EG(vm_interrupt))) { \ ZEND_VM_LOOP_INTERRUPT(); \ } \ } while (0) /* * Stack Frame Layout (the whole stack frame is allocated at once) * ================== * * +========================================+ * EG(current_execute_data) -> | zend_execute_data | * +----------------------------------------+ * EX_CV_NUM(0) ---------> | VAR[0] = ARG[1] | * | ... | * | VAR[op_array->num_args-1] = ARG[N] | * | ... | * | VAR[op_array->last_var-1] | * | VAR[op_array->last_var] = TMP[0] | * | ... | * | VAR[op_array->last_var+op_array->T-1] | * | ARG[N+1] (extra_args) | * | ... | * +----------------------------------------+ */ static zend_never_inline void zend_copy_extra_args(EXECUTE_DATA_D) { zend_op_array *op_array = &EX(func)->op_array; uint32_t first_extra_arg = op_array->num_args; uint32_t num_args = EX_NUM_ARGS(); zval *src; size_t delta; uint32_t count; uint32_t type_flags = 0; if (EXPECTED((op_array->fn_flags & ZEND_ACC_HAS_TYPE_HINTS) == 0)) { /* Skip useless ZEND_RECV and ZEND_RECV_INIT opcodes */ #if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID)) opline += first_extra_arg; #else EX(opline) += first_extra_arg; #endif } /* move extra args into separate array after all CV and TMP vars */ src = EX_VAR_NUM(num_args - 1); delta = op_array->last_var + op_array->T - first_extra_arg; count = num_args - first_extra_arg; if (EXPECTED(delta != 0)) { delta *= sizeof(zval); do { type_flags |= Z_TYPE_INFO_P(src); ZVAL_COPY_VALUE((zval*)(((char*)src) + delta), src); ZVAL_UNDEF(src); src--; } while (--count); if (Z_TYPE_INFO_REFCOUNTED(type_flags)) { ZEND_ADD_CALL_FLAG(execute_data, ZEND_CALL_FREE_EXTRA_ARGS); } } else { do { if (Z_REFCOUNTED_P(src)) { ZEND_ADD_CALL_FLAG(execute_data, ZEND_CALL_FREE_EXTRA_ARGS); break; } src--; } while (--count); } } static zend_always_inline void zend_init_cvs(uint32_t first, uint32_t last EXECUTE_DATA_DC) { if (EXPECTED(first < last)) { uint32_t count = last - first; zval *var = EX_VAR_NUM(first); do { ZVAL_UNDEF(var); var++; } while (--count); } } static zend_always_inline void i_init_func_execute_data(zend_op_array *op_array, zval *return_value, zend_bool may_be_trampoline EXECUTE_DATA_DC) /* {{{ */ { uint32_t first_extra_arg, num_args; ZEND_ASSERT(EX(func) == (zend_function*)op_array); #if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID)) opline = op_array->opcodes; #else EX(opline) = op_array->opcodes; #endif EX(call) = NULL; EX(return_value) = return_value; /* Handle arguments */ first_extra_arg = op_array->num_args; num_args = EX_NUM_ARGS(); if (UNEXPECTED(num_args > first_extra_arg)) { if (!may_be_trampoline || EXPECTED(!(op_array->fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE))) { zend_copy_extra_args(EXECUTE_DATA_C); } } else if (EXPECTED((op_array->fn_flags & ZEND_ACC_HAS_TYPE_HINTS) == 0)) { /* Skip useless ZEND_RECV and ZEND_RECV_INIT opcodes */ #if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID)) opline += num_args; #else EX(opline) += num_args; #endif } /* Initialize CV variables (skip arguments) */ zend_init_cvs(num_args, op_array->last_var EXECUTE_DATA_CC); EX_LOAD_RUN_TIME_CACHE(op_array); EG(current_execute_data) = execute_data; #if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID)) EX(opline) = opline; #endif } /* }}} */ static zend_never_inline void ZEND_FASTCALL init_func_run_time_cache(zend_op_array *op_array) /* {{{ */ { ZEND_ASSERT(op_array->run_time_cache == NULL); op_array->run_time_cache = zend_arena_alloc(&CG(arena), op_array->cache_size); memset(op_array->run_time_cache, 0, op_array->cache_size); } /* }}} */ static zend_always_inline zend_function* ZEND_FASTCALL init_func_run_time_cache_i(zval *zv) /* {{{ */ { zend_op_array *op_array = Z_PTR_P(zv); ZEND_ASSERT(op_array->run_time_cache == NULL); if (op_array->fn_flags & ZEND_ACC_IMMUTABLE) { zend_op_array *new_op_array = zend_arena_alloc(&CG(arena), sizeof(zend_op_array) + op_array->cache_size); Z_PTR_P(zv) = new_op_array; memcpy(new_op_array, op_array, sizeof(zend_op_array)); new_op_array->fn_flags &= ~ZEND_ACC_IMMUTABLE; new_op_array->run_time_cache = (void**)(new_op_array + 1); memset(new_op_array->run_time_cache, 0, new_op_array->cache_size); return (zend_function*)new_op_array; } else { op_array->run_time_cache = zend_arena_alloc(&CG(arena), op_array->cache_size); memset(op_array->run_time_cache, 0, op_array->cache_size); return (zend_function*)op_array; } } /* }}} */ static zend_never_inline zend_function* init_func_run_time_cache_ex(zval *zv) /* {{{ */ { return init_func_run_time_cache_i(zv); } /* }}} */ ZEND_API zend_function * ZEND_FASTCALL zend_fetch_function(zend_string *name) /* {{{ */ { zval *zv = zend_hash_find(EG(function_table), name); if (EXPECTED(zv != NULL)) { zend_function *fbc = Z_FUNC_P(zv); if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!fbc->op_array.run_time_cache)) { fbc = (zend_function*)init_func_run_time_cache_i(zv); } return fbc; } return NULL; } /* }}} */ ZEND_API zend_function * ZEND_FASTCALL zend_fetch_function_str(const char *name, size_t len) /* {{{ */ { zval *zv = zend_hash_str_find(EG(function_table), name, len); if (EXPECTED(zv != NULL)) { zend_function *fbc = Z_FUNC_P(zv); if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!fbc->op_array.run_time_cache)) { fbc = (zend_function*)init_func_run_time_cache_i(zv); } return fbc; } return NULL; } /* }}} */ static zend_always_inline void i_init_code_execute_data(zend_execute_data *execute_data, zend_op_array *op_array, zval *return_value) /* {{{ */ { ZEND_ASSERT(EX(func) == (zend_function*)op_array); EX(opline) = op_array->opcodes; EX(call) = NULL; EX(return_value) = return_value; zend_attach_symbol_table(execute_data); if (!op_array->run_time_cache) { op_array->run_time_cache = emalloc(op_array->cache_size); memset(op_array->run_time_cache, 0, op_array->cache_size); } EX_LOAD_RUN_TIME_CACHE(op_array); EG(current_execute_data) = execute_data; } /* }}} */ ZEND_API void zend_init_func_execute_data(zend_execute_data *ex, zend_op_array *op_array, zval *return_value) /* {{{ */ { #if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID)) zend_execute_data *orig_execute_data = execute_data; const zend_op *orig_opline = opline; execute_data = ex; #else zend_execute_data *execute_data = ex; #endif EX(prev_execute_data) = EG(current_execute_data); if (!op_array->run_time_cache) { init_func_run_time_cache(op_array); } i_init_func_execute_data(op_array, return_value, 1 EXECUTE_DATA_CC); #if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID)) EX(opline) = opline; opline = orig_opline; execute_data = orig_execute_data; #endif } /* }}} */ ZEND_API void zend_init_code_execute_data(zend_execute_data *execute_data, zend_op_array *op_array, zval *return_value) /* {{{ */ { EX(prev_execute_data) = EG(current_execute_data); if (!op_array->run_time_cache) { op_array->run_time_cache = emalloc(op_array->cache_size); memset(op_array->run_time_cache, 0, op_array->cache_size); } i_init_code_execute_data(execute_data, op_array, return_value); } /* }}} */ ZEND_API void zend_init_execute_data(zend_execute_data *execute_data, zend_op_array *op_array, zval *return_value) /* {{{ */ { if (EX_CALL_INFO() & ZEND_CALL_HAS_SYMBOL_TABLE) { zend_init_code_execute_data(execute_data, op_array, return_value); } else { zend_init_func_execute_data(execute_data, op_array, return_value); } } /* }}} */ static zend_always_inline zend_bool zend_is_by_ref_func_arg_fetch(uint32_t arg_num, zend_function *func) /* {{{ */ { if (EXPECTED(arg_num <= MAX_ARG_FLAG_NUM)) { return QUICK_ARG_SHOULD_BE_SENT_BY_REF(func, arg_num); } return ARG_SHOULD_BE_SENT_BY_REF(func, arg_num); } /* }}} */ static zend_execute_data *zend_vm_stack_copy_call_frame(zend_execute_data *call, uint32_t passed_args, uint32_t additional_args) /* {{{ */ { zend_execute_data *new_call; int used_stack = (EG(vm_stack_top) - (zval*)call) + additional_args; /* copy call frame into new stack segment */ new_call = zend_vm_stack_extend(used_stack * sizeof(zval)); *new_call = *call; ZEND_ADD_CALL_FLAG(new_call, ZEND_CALL_ALLOCATED); if (passed_args) { zval *src = ZEND_CALL_ARG(call, 1); zval *dst = ZEND_CALL_ARG(new_call, 1); do { ZVAL_COPY_VALUE(dst, src); passed_args--; src++; dst++; } while (passed_args); } /* delete old call_frame from previous stack segment */ EG(vm_stack)->prev->top = (zval*)call; /* delete previous stack segment if it becames empty */ if (UNEXPECTED(EG(vm_stack)->prev->top == ZEND_VM_STACK_ELEMENTS(EG(vm_stack)->prev))) { zend_vm_stack r = EG(vm_stack)->prev; EG(vm_stack)->prev = r->prev; efree(r); } return new_call; } /* }}} */ static zend_always_inline void zend_vm_stack_extend_call_frame(zend_execute_data **call, uint32_t passed_args, uint32_t additional_args) /* {{{ */ { if (EXPECTED((uint32_t)(EG(vm_stack_end) - EG(vm_stack_top)) > additional_args)) { EG(vm_stack_top) += additional_args; } else { *call = zend_vm_stack_copy_call_frame(*call, passed_args, additional_args); } } /* }}} */ static zend_always_inline zend_generator *zend_get_running_generator(EXECUTE_DATA_D) /* {{{ */ { /* The generator object is stored in EX(return_value) */ zend_generator *generator = (zend_generator *) EX(return_value); /* However control may currently be delegated to another generator. * That's the one we're interested in. */ return generator; } /* }}} */ static void cleanup_unfinished_calls(zend_execute_data *execute_data, uint32_t op_num) /* {{{ */ { if (UNEXPECTED(EX(call))) { zend_execute_data *call = EX(call); zend_op *opline = EX(func)->op_array.opcodes + op_num; int level; int do_exit; if (UNEXPECTED(opline->opcode == ZEND_INIT_FCALL || opline->opcode == ZEND_INIT_FCALL_BY_NAME || opline->opcode == ZEND_INIT_NS_FCALL_BY_NAME || opline->opcode == ZEND_INIT_DYNAMIC_CALL || opline->opcode == ZEND_INIT_USER_CALL || opline->opcode == ZEND_INIT_METHOD_CALL || opline->opcode == ZEND_INIT_STATIC_METHOD_CALL || opline->opcode == ZEND_NEW)) { ZEND_ASSERT(op_num); opline--; } do { /* If the exception was thrown during a function call there might be * arguments pushed to the stack that have to be dtor'ed. */ /* find the number of actually passed arguments */ level = 0; do_exit = 0; do { switch (opline->opcode) { case ZEND_DO_FCALL: case ZEND_DO_ICALL: case ZEND_DO_UCALL: case ZEND_DO_FCALL_BY_NAME: level++; break; case ZEND_INIT_FCALL: case ZEND_INIT_FCALL_BY_NAME: case ZEND_INIT_NS_FCALL_BY_NAME: case ZEND_INIT_DYNAMIC_CALL: case ZEND_INIT_USER_CALL: case ZEND_INIT_METHOD_CALL: case ZEND_INIT_STATIC_METHOD_CALL: case ZEND_NEW: if (level == 0) { ZEND_CALL_NUM_ARGS(call) = 0; do_exit = 1; } level--; break; case ZEND_SEND_VAL: case ZEND_SEND_VAL_EX: case ZEND_SEND_VAR: case ZEND_SEND_VAR_EX: case ZEND_SEND_FUNC_ARG: case ZEND_SEND_REF: case ZEND_SEND_VAR_NO_REF: case ZEND_SEND_VAR_NO_REF_EX: case ZEND_SEND_USER: if (level == 0) { ZEND_CALL_NUM_ARGS(call) = opline->op2.num; do_exit = 1; } break; case ZEND_SEND_ARRAY: case ZEND_SEND_UNPACK: if (level == 0) { do_exit = 1; } break; } if (!do_exit) { opline--; } } while (!do_exit); if (call->prev_execute_data) { /* skip current call region */ level = 0; do_exit = 0; do { switch (opline->opcode) { case ZEND_DO_FCALL: case ZEND_DO_ICALL: case ZEND_DO_UCALL: case ZEND_DO_FCALL_BY_NAME: level++; break; case ZEND_INIT_FCALL: case ZEND_INIT_FCALL_BY_NAME: case ZEND_INIT_NS_FCALL_BY_NAME: case ZEND_INIT_DYNAMIC_CALL: case ZEND_INIT_USER_CALL: case ZEND_INIT_METHOD_CALL: case ZEND_INIT_STATIC_METHOD_CALL: case ZEND_NEW: if (level == 0) { do_exit = 1; } level--; break; } opline--; } while (!do_exit); } zend_vm_stack_free_args(EX(call)); if (ZEND_CALL_INFO(call) & ZEND_CALL_RELEASE_THIS) { if (ZEND_CALL_INFO(call) & ZEND_CALL_CTOR) { GC_DELREF(Z_OBJ(call->This)); if (GC_REFCOUNT(Z_OBJ(call->This)) == 1) { zend_object_store_ctor_failed(Z_OBJ(call->This)); } } OBJ_RELEASE(Z_OBJ(call->This)); } if (call->func->common.fn_flags & ZEND_ACC_CLOSURE) { zend_object_release(ZEND_CLOSURE_OBJECT(call->func)); } else if (call->func->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE) { zend_string_release_ex(call->func->common.function_name, 0); zend_free_trampoline(call->func); } EX(call) = call->prev_execute_data; zend_vm_stack_free_call_frame(call); call = EX(call); } while (call); } } /* }}} */ static const zend_live_range *find_live_range(const zend_op_array *op_array, uint32_t op_num, uint32_t var_num) /* {{{ */ { int i; for (i = 0; i < op_array->last_live_range; i++) { const zend_live_range *range = &op_array->live_range[i]; if (op_num >= range->start && op_num < range->end && var_num == (range->var & ~ZEND_LIVE_MASK)) { return range; } } return NULL; } /* }}} */ static void cleanup_live_vars(zend_execute_data *execute_data, uint32_t op_num, uint32_t catch_op_num) /* {{{ */ { int i; for (i = 0; i < EX(func)->op_array.last_live_range; i++) { const zend_live_range *range = &EX(func)->op_array.live_range[i]; if (range->start > op_num) { /* further blocks will not be relevant... */ break; } else if (op_num < range->end) { if (!catch_op_num || catch_op_num >= range->end) { uint32_t kind = range->var & ZEND_LIVE_MASK; uint32_t var_num = range->var & ~ZEND_LIVE_MASK; zval *var = EX_VAR(var_num); if (kind == ZEND_LIVE_TMPVAR) { zval_ptr_dtor_nogc(var); } else if (kind == ZEND_LIVE_LOOP) { if (Z_TYPE_P(var) != IS_ARRAY && Z_FE_ITER_P(var) != (uint32_t)-1) { zend_hash_iterator_del(Z_FE_ITER_P(var)); } zval_ptr_dtor_nogc(var); } else if (kind == ZEND_LIVE_ROPE) { zend_string **rope = (zend_string **)var; zend_op *last = EX(func)->op_array.opcodes + op_num; while ((last->opcode != ZEND_ROPE_ADD && last->opcode != ZEND_ROPE_INIT) || last->result.var != var_num) { ZEND_ASSERT(last >= EX(func)->op_array.opcodes); last--; } if (last->opcode == ZEND_ROPE_INIT) { zend_string_release_ex(*rope, 0); } else { int j = last->extended_value; do { zend_string_release_ex(rope[j], 0); } while (j--); } } else if (kind == ZEND_LIVE_SILENCE) { /* restore previous error_reporting value */ if (!EG(error_reporting) && Z_LVAL_P(var) != 0) { EG(error_reporting) = Z_LVAL_P(var); } } } } } } /* }}} */ ZEND_API void zend_cleanup_unfinished_execution(zend_execute_data *execute_data, uint32_t op_num, uint32_t catch_op_num) { cleanup_unfinished_calls(execute_data, op_num); cleanup_live_vars(execute_data, op_num, catch_op_num); } static void zend_swap_operands(zend_op *op) /* {{{ */ { znode_op tmp; zend_uchar tmp_type; tmp = op->op1; tmp_type = op->op1_type; op->op1 = op->op2; op->op1_type = op->op2_type; op->op2 = tmp; op->op2_type = tmp_type; } /* }}} */ static zend_never_inline zend_execute_data *zend_init_dynamic_call_string(zend_string *function, uint32_t num_args) /* {{{ */ { zend_function *fbc; zval *func; zend_class_entry *called_scope; zend_string *lcname; const char *colon; if ((colon = zend_memrchr(ZSTR_VAL(function), ':', ZSTR_LEN(function))) != NULL && colon > ZSTR_VAL(function) && *(colon-1) == ':' ) { zend_string *mname; size_t cname_length = colon - ZSTR_VAL(function) - 1; size_t mname_length = ZSTR_LEN(function) - cname_length - (sizeof("::") - 1); lcname = zend_string_init(ZSTR_VAL(function), cname_length, 0); called_scope = zend_fetch_class_by_name(lcname, NULL, ZEND_FETCH_CLASS_DEFAULT | ZEND_FETCH_CLASS_EXCEPTION); if (UNEXPECTED(called_scope == NULL)) { zend_string_release_ex(lcname, 0); return NULL; } mname = zend_string_init(ZSTR_VAL(function) + (cname_length + sizeof("::") - 1), mname_length, 0); if (called_scope->get_static_method) { fbc = called_scope->get_static_method(called_scope, mname); } else { fbc = zend_std_get_static_method(called_scope, mname, NULL); } if (UNEXPECTED(fbc == NULL)) { if (EXPECTED(!EG(exception))) { zend_undefined_method(called_scope, mname); } zend_string_release_ex(lcname, 0); zend_string_release_ex(mname, 0); return NULL; } zend_string_release_ex(lcname, 0); zend_string_release_ex(mname, 0); if (UNEXPECTED(!(fbc->common.fn_flags & ZEND_ACC_STATIC))) { zend_non_static_method_call(fbc); if (UNEXPECTED(EG(exception) != NULL)) { return NULL; } } if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!fbc->op_array.run_time_cache)) { init_func_run_time_cache(&fbc->op_array); } } else { if (ZSTR_VAL(function)[0] == '\\') { lcname = zend_string_alloc(ZSTR_LEN(function) - 1, 0); zend_str_tolower_copy(ZSTR_VAL(lcname), ZSTR_VAL(function) + 1, ZSTR_LEN(function) - 1); } else { lcname = zend_string_tolower(function); } if (UNEXPECTED((func = zend_hash_find(EG(function_table), lcname)) == NULL)) { zend_throw_error(NULL, "Call to undefined function %s()", ZSTR_VAL(function)); zend_string_release_ex(lcname, 0); return NULL; } zend_string_release_ex(lcname, 0); fbc = Z_FUNC_P(func); if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!fbc->op_array.run_time_cache)) { fbc = init_func_run_time_cache_ex(func); } called_scope = NULL; } return zend_vm_stack_push_call_frame(ZEND_CALL_NESTED_FUNCTION | ZEND_CALL_DYNAMIC, fbc, num_args, called_scope, NULL); } /* }}} */ static zend_never_inline zend_execute_data *zend_init_dynamic_call_object(zval *function, uint32_t num_args) /* {{{ */ { zend_function *fbc; zend_class_entry *called_scope; zend_object *object; uint32_t call_info = ZEND_CALL_NESTED_FUNCTION | ZEND_CALL_DYNAMIC; if (EXPECTED(Z_OBJ_HANDLER_P(function, get_closure)) && EXPECTED(Z_OBJ_HANDLER_P(function, get_closure)(function, &called_scope, &fbc, &object) == SUCCESS)) { if (fbc->common.fn_flags & ZEND_ACC_CLOSURE) { /* Delay closure destruction until its invocation */ GC_ADDREF(ZEND_CLOSURE_OBJECT(fbc)); call_info |= ZEND_CALL_CLOSURE; if (fbc->common.fn_flags & ZEND_ACC_FAKE_CLOSURE) { call_info |= ZEND_CALL_FAKE_CLOSURE; } } else if (object) { call_info |= ZEND_CALL_RELEASE_THIS; GC_ADDREF(object); /* For $this pointer */ } } else { zend_throw_error(NULL, "Function name must be a string"); return NULL; } if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!fbc->op_array.run_time_cache)) { init_func_run_time_cache(&fbc->op_array); } return zend_vm_stack_push_call_frame(call_info, fbc, num_args, called_scope, object); } /* }}} */ static zend_never_inline zend_execute_data *zend_init_dynamic_call_array(zend_array *function, uint32_t num_args) /* {{{ */ { zend_function *fbc; zend_class_entry *called_scope; zend_object *object; uint32_t call_info = ZEND_CALL_NESTED_FUNCTION | ZEND_CALL_DYNAMIC; if (zend_hash_num_elements(function) == 2) { zval *obj; zval *method; obj = zend_hash_index_find(function, 0); method = zend_hash_index_find(function, 1); if (UNEXPECTED(!obj) || UNEXPECTED(!method)) { zend_throw_error(NULL, "Array callback has to contain indices 0 and 1"); return NULL; } ZVAL_DEREF(obj); if (UNEXPECTED(Z_TYPE_P(obj) != IS_STRING) && UNEXPECTED(Z_TYPE_P(obj) != IS_OBJECT)) { zend_throw_error(NULL, "First array member is not a valid class name or object"); return NULL; } ZVAL_DEREF(method); if (UNEXPECTED(Z_TYPE_P(method) != IS_STRING)) { zend_throw_error(NULL, "Second array member is not a valid method"); return NULL; } if (Z_TYPE_P(obj) == IS_STRING) { object = NULL; called_scope = zend_fetch_class_by_name(Z_STR_P(obj), NULL, ZEND_FETCH_CLASS_DEFAULT | ZEND_FETCH_CLASS_EXCEPTION); if (UNEXPECTED(called_scope == NULL)) { return NULL; } if (called_scope->get_static_method) { fbc = called_scope->get_static_method(called_scope, Z_STR_P(method)); } else { fbc = zend_std_get_static_method(called_scope, Z_STR_P(method), NULL); } if (UNEXPECTED(fbc == NULL)) { if (EXPECTED(!EG(exception))) { zend_undefined_method(called_scope, Z_STR_P(method)); } return NULL; } if (!(fbc->common.fn_flags & ZEND_ACC_STATIC)) { zend_non_static_method_call(fbc); if (UNEXPECTED(EG(exception) != NULL)) { return NULL; } } } else { called_scope = Z_OBJCE_P(obj); object = Z_OBJ_P(obj); fbc = Z_OBJ_HT_P(obj)->get_method(&object, Z_STR_P(method), NULL); if (UNEXPECTED(fbc == NULL)) { if (EXPECTED(!EG(exception))) { zend_undefined_method(object->ce, Z_STR_P(method)); } return NULL; } if ((fbc->common.fn_flags & ZEND_ACC_STATIC) != 0) { object = NULL; } else { call_info |= ZEND_CALL_RELEASE_THIS; GC_ADDREF(object); /* For $this pointer */ } } } else { zend_throw_error(NULL, "Function name must be a string"); return NULL; } if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!fbc->op_array.run_time_cache)) { init_func_run_time_cache(&fbc->op_array); } return zend_vm_stack_push_call_frame(call_info, fbc, num_args, called_scope, object); } /* }}} */ #define ZEND_FAKE_OP_ARRAY ((zend_op_array*)(zend_intptr_t)-1) static zend_never_inline zend_op_array* ZEND_FASTCALL zend_include_or_eval(zval *inc_filename, int type) /* {{{ */ { zend_op_array *new_op_array = NULL; zval tmp_inc_filename; ZVAL_UNDEF(&tmp_inc_filename); if (Z_TYPE_P(inc_filename) != IS_STRING) { ZVAL_STR(&tmp_inc_filename, zval_get_string_func(inc_filename)); inc_filename = &tmp_inc_filename; } switch (type) { case ZEND_INCLUDE_ONCE: case ZEND_REQUIRE_ONCE: { zend_file_handle file_handle; zend_string *resolved_path; resolved_path = zend_resolve_path(Z_STRVAL_P(inc_filename), Z_STRLEN_P(inc_filename)); if (EXPECTED(resolved_path)) { if (zend_hash_exists(&EG(included_files), resolved_path)) { goto already_compiled; } } else if (UNEXPECTED(strlen(Z_STRVAL_P(inc_filename)) != Z_STRLEN_P(inc_filename))) { zend_message_dispatcher( (type == ZEND_INCLUDE_ONCE) ? ZMSG_FAILED_INCLUDE_FOPEN : ZMSG_FAILED_REQUIRE_FOPEN, Z_STRVAL_P(inc_filename)); break; } else { resolved_path = zend_string_copy(Z_STR_P(inc_filename)); } if (SUCCESS == zend_stream_open(ZSTR_VAL(resolved_path), &file_handle)) { if (!file_handle.opened_path) { file_handle.opened_path = zend_string_copy(resolved_path); } if (zend_hash_add_empty_element(&EG(included_files), file_handle.opened_path)) { zend_op_array *op_array = zend_compile_file(&file_handle, (type==ZEND_INCLUDE_ONCE?ZEND_INCLUDE:ZEND_REQUIRE)); zend_destroy_file_handle(&file_handle); zend_string_release_ex(resolved_path, 0); if (Z_TYPE(tmp_inc_filename) != IS_UNDEF) { zval_ptr_dtor_str(&tmp_inc_filename); } return op_array; } else { zend_file_handle_dtor(&file_handle); already_compiled: new_op_array = ZEND_FAKE_OP_ARRAY; } } else { zend_message_dispatcher( (type == ZEND_INCLUDE_ONCE) ? ZMSG_FAILED_INCLUDE_FOPEN : ZMSG_FAILED_REQUIRE_FOPEN, Z_STRVAL_P(inc_filename)); } zend_string_release_ex(resolved_path, 0); } break; case ZEND_INCLUDE: case ZEND_REQUIRE: if (UNEXPECTED(strlen(Z_STRVAL_P(inc_filename)) != Z_STRLEN_P(inc_filename))) { zend_message_dispatcher( (type == ZEND_INCLUDE) ? ZMSG_FAILED_INCLUDE_FOPEN : ZMSG_FAILED_REQUIRE_FOPEN, Z_STRVAL_P(inc_filename)); break; } new_op_array = compile_filename(type, inc_filename); break; case ZEND_EVAL: { char *eval_desc = zend_make_compiled_string_description("eval()'d code"); new_op_array = zend_compile_string(inc_filename, eval_desc); efree(eval_desc); } break; EMPTY_SWITCH_DEFAULT_CASE() } if (Z_TYPE(tmp_inc_filename) != IS_UNDEF) { zval_ptr_dtor_str(&tmp_inc_filename); } return new_op_array; } /* }}} */ ZEND_API int ZEND_FASTCALL zend_do_fcall_overloaded(zend_execute_data *call, zval *ret) /* {{{ */ { zend_function *fbc = call->func; zend_object *object; /* Not sure what should be done here if it's a static method */ if (UNEXPECTED(Z_TYPE(call->This) != IS_OBJECT)) { zend_vm_stack_free_args(call); if (fbc->type == ZEND_OVERLOADED_FUNCTION_TEMPORARY) { zend_string_release_ex(fbc->common.function_name, 0); } efree(fbc); zend_vm_stack_free_call_frame(call); zend_throw_error(NULL, "Cannot call overloaded function for non-object"); return 0; } object = Z_OBJ(call->This); ZVAL_NULL(ret); EG(current_execute_data) = call; object->handlers->call_method(fbc->common.function_name, object, call, ret); EG(current_execute_data) = call->prev_execute_data; zend_vm_stack_free_args(call); if (fbc->type == ZEND_OVERLOADED_FUNCTION_TEMPORARY) { zend_string_release_ex(fbc->common.function_name, 0); } efree(fbc); return 1; } /* }}} */ static zend_never_inline zend_bool ZEND_FASTCALL zend_fe_reset_iterator(zval *array_ptr, int by_ref OPLINE_DC EXECUTE_DATA_DC) /* {{{ */ { zend_class_entry *ce = Z_OBJCE_P(array_ptr); zend_object_iterator *iter = ce->get_iterator(ce, array_ptr, by_ref); zend_bool is_empty; if (UNEXPECTED(!iter) || UNEXPECTED(EG(exception))) { if (iter) { OBJ_RELEASE(&iter->std); } if (!EG(exception)) { zend_throw_exception_ex(NULL, 0, "Object of type %s did not create an Iterator", ZSTR_VAL(ce->name)); } ZVAL_UNDEF(EX_VAR(opline->result.var)); return 1; } iter->index = 0; if (iter->funcs->rewind) { iter->funcs->rewind(iter); if (UNEXPECTED(EG(exception) != NULL)) { OBJ_RELEASE(&iter->std); ZVAL_UNDEF(EX_VAR(opline->result.var)); return 1; } } is_empty = iter->funcs->valid(iter) != SUCCESS; if (UNEXPECTED(EG(exception) != NULL)) { OBJ_RELEASE(&iter->std); ZVAL_UNDEF(EX_VAR(opline->result.var)); return 1; } iter->index = -1; /* will be set to 0 before using next handler */ ZVAL_OBJ(EX_VAR(opline->result.var), &iter->std); Z_FE_ITER_P(EX_VAR(opline->result.var)) = (uint32_t)-1; return is_empty; } /* }}} */ static zend_always_inline int _zend_quick_get_constant( const zval *key, uint32_t flags, int check_defined_only OPLINE_DC EXECUTE_DATA_DC) /* {{{ */ { zval *zv; const zval *orig_key = key; zend_constant *c = NULL; zv = zend_hash_find_ex(EG(zend_constants), Z_STR_P(key), 1); if (zv) { c = (zend_constant*)Z_PTR_P(zv); } else { key++; zv = zend_hash_find_ex(EG(zend_constants), Z_STR_P(key), 1); if (zv && (ZEND_CONSTANT_FLAGS((zend_constant*)Z_PTR_P(zv)) & CONST_CS) == 0) { c = (zend_constant*)Z_PTR_P(zv); } else { if ((flags & (IS_CONSTANT_IN_NAMESPACE|IS_CONSTANT_UNQUALIFIED)) == (IS_CONSTANT_IN_NAMESPACE|IS_CONSTANT_UNQUALIFIED)) { key++; zv = zend_hash_find_ex(EG(zend_constants), Z_STR_P(key), 1); if (zv) { c = (zend_constant*)Z_PTR_P(zv); } else { key++; zv = zend_hash_find_ex(EG(zend_constants), Z_STR_P(key), 1); if (zv && (ZEND_CONSTANT_FLAGS((zend_constant*)Z_PTR_P(zv)) & CONST_CS) == 0) { c = (zend_constant*)Z_PTR_P(zv); } } } } } if (!c) { if (!check_defined_only) { if ((opline->op1.num & IS_CONSTANT_UNQUALIFIED) != 0) { char *actual = (char *)zend_memrchr(Z_STRVAL_P(RT_CONSTANT(opline, opline->op2)), '\\', Z_STRLEN_P(RT_CONSTANT(opline, opline->op2))); if (!actual) { ZVAL_STR_COPY(EX_VAR(opline->result.var), Z_STR_P(RT_CONSTANT(opline, opline->op2))); } else { actual++; ZVAL_STRINGL(EX_VAR(opline->result.var), actual, Z_STRLEN_P(RT_CONSTANT(opline, opline->op2)) - (actual - Z_STRVAL_P(RT_CONSTANT(opline, opline->op2)))); } /* non-qualified constant - allow text substitution */ zend_error(E_WARNING, "Use of undefined constant %s - assumed '%s' (this will throw an Error in a future version of PHP)", Z_STRVAL_P(EX_VAR(opline->result.var)), Z_STRVAL_P(EX_VAR(opline->result.var))); } else { zend_throw_error(NULL, "Undefined constant '%s'", Z_STRVAL_P(RT_CONSTANT(opline, opline->op2))); ZVAL_UNDEF(EX_VAR(opline->result.var)); } } return FAILURE; } if (!check_defined_only) { ZVAL_COPY_OR_DUP(EX_VAR(opline->result.var), &c->value); if (!(ZEND_CONSTANT_FLAGS(c) & (CONST_CS|CONST_CT_SUBST))) { const char *ns_sep; size_t shortname_offset; size_t shortname_len; zend_bool is_deprecated; if (flags & IS_CONSTANT_UNQUALIFIED) { const zval *access_key; if (!(flags & IS_CONSTANT_IN_NAMESPACE)) { access_key = orig_key - 1; } else { if (key < orig_key + 2) { goto check_short_name; } else { access_key = orig_key + 2; } } is_deprecated = !zend_string_equals(c->name, Z_STR_P(access_key)); } else { check_short_name: /* Namespaces are always case-insensitive. Only compare shortname. */ ns_sep = zend_memrchr(ZSTR_VAL(c->name), '\\', ZSTR_LEN(c->name)); if (ns_sep) { shortname_offset = ns_sep - ZSTR_VAL(c->name) + 1; shortname_len = ZSTR_LEN(c->name) - shortname_offset; } else { shortname_offset = 0; shortname_len = ZSTR_LEN(c->name); } is_deprecated = memcmp(ZSTR_VAL(c->name) + shortname_offset, Z_STRVAL_P(orig_key - 1) + shortname_offset, shortname_len) != 0; } if (is_deprecated) { zend_error(E_DEPRECATED, "Case-insensitive constants are deprecated. " "The correct casing for this constant is \"%s\"", ZSTR_VAL(c->name)); return SUCCESS; } } } CACHE_PTR(opline->extended_value, c); return SUCCESS; } /* }}} */ static zend_never_inline void ZEND_FASTCALL zend_quick_get_constant( const zval *key, uint32_t flags OPLINE_DC EXECUTE_DATA_DC) /* {{{ */ { _zend_quick_get_constant(key, flags, 0 OPLINE_CC EXECUTE_DATA_CC); } /* }}} */ static zend_never_inline int ZEND_FASTCALL zend_quick_check_constant( const zval *key OPLINE_DC EXECUTE_DATA_DC) /* {{{ */ { return _zend_quick_get_constant(key, 0, 1 OPLINE_CC EXECUTE_DATA_CC); } /* }}} */ #ifdef ZEND_VM_TRACE_HANDLERS # include "zend_vm_trace_handlers.h" #elif defined(ZEND_VM_TRACE_MAP) # include "zend_vm_trace_map.h" #endif #define ZEND_VM_NEXT_OPCODE_EX(check_exception, skip) \ CHECK_SYMBOL_TABLES() \ if (check_exception) { \ OPLINE = EX(opline) + (skip); \ } else { \ OPLINE = opline + (skip); \ } \ ZEND_VM_CONTINUE() #define ZEND_VM_NEXT_OPCODE_CHECK_EXCEPTION() \ ZEND_VM_NEXT_OPCODE_EX(1, 1) #define ZEND_VM_NEXT_OPCODE() \ ZEND_VM_NEXT_OPCODE_EX(0, 1) #define ZEND_VM_SET_NEXT_OPCODE(new_op) \ CHECK_SYMBOL_TABLES() \ OPLINE = new_op #define ZEND_VM_SET_OPCODE(new_op) \ CHECK_SYMBOL_TABLES() \ OPLINE = new_op; \ ZEND_VM_INTERRUPT_CHECK() #define ZEND_VM_SET_RELATIVE_OPCODE(opline, offset) \ ZEND_VM_SET_OPCODE(ZEND_OFFSET_TO_OPLINE(opline, offset)) #define ZEND_VM_JMP_EX(new_op, check_exception) do { \ if (check_exception && UNEXPECTED(EG(exception))) { \ HANDLE_EXCEPTION(); \ } \ ZEND_VM_SET_OPCODE(new_op); \ ZEND_VM_CONTINUE(); \ } while (0) #define ZEND_VM_JMP(new_op) \ ZEND_VM_JMP_EX(new_op, 1) #define ZEND_VM_INC_OPCODE() \ OPLINE++ #ifndef VM_SMART_OPCODES # define VM_SMART_OPCODES 1 #endif #if VM_SMART_OPCODES # define ZEND_VM_REPEATABLE_OPCODE \ do { # define ZEND_VM_REPEAT_OPCODE(_opcode) \ } while (UNEXPECTED((++opline)->opcode == _opcode)); \ OPLINE = opline; \ ZEND_VM_CONTINUE() # define ZEND_VM_SMART_BRANCH(_result, _check) do { \ int __result; \ if (EXPECTED((opline+1)->opcode == ZEND_JMPZ)) { \ __result = (_result); \ } else if (EXPECTED((opline+1)->opcode == ZEND_JMPNZ)) { \ __result = !(_result); \ } else { \ break; \ } \ if ((_check) && UNEXPECTED(EG(exception))) { \ ZVAL_UNDEF(EX_VAR(opline->result.var)); \ HANDLE_EXCEPTION(); \ } \ if (__result) { \ ZEND_VM_SET_NEXT_OPCODE(opline + 2); \ } else { \ ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \ } \ ZEND_VM_CONTINUE(); \ } while (0) # define ZEND_VM_SMART_BRANCH_JMPZ(_result, _check) do { \ if ((_check) && UNEXPECTED(EG(exception))) { \ ZVAL_UNDEF(EX_VAR(opline->result.var)); \ HANDLE_EXCEPTION(); \ } \ if (_result) { \ ZEND_VM_SET_NEXT_OPCODE(opline + 2); \ } else { \ ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \ } \ ZEND_VM_CONTINUE(); \ } while (0) # define ZEND_VM_SMART_BRANCH_JMPNZ(_result, _check) do { \ if ((_check) && UNEXPECTED(EG(exception))) { \ ZVAL_UNDEF(EX_VAR(opline->result.var)); \ HANDLE_EXCEPTION(); \ } \ if (!(_result)) { \ ZEND_VM_SET_NEXT_OPCODE(opline + 2); \ } else { \ ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \ } \ ZEND_VM_CONTINUE(); \ } while (0) #else # define ZEND_VM_REPEATABLE_OPCODE # define ZEND_VM_REPEAT_OPCODE(_opcode) # define ZEND_VM_SMART_BRANCH(_result, _check) # define ZEND_VM_SMART_BRANCH_JMPZ(_result, _check) # define ZEND_VM_SMART_BRANCH_JMPNZ(_result, _check) #endif #ifdef __GNUC__ # define ZEND_VM_GUARD(name) __asm__("#" #name) #else # define ZEND_VM_GUARD(name) #endif #define GET_OP1_UNDEF_CV(ptr, type) \ _get_zval_cv_lookup_ ## type(ptr, opline->op1.var EXECUTE_DATA_CC) #define GET_OP2_UNDEF_CV(ptr, type) \ _get_zval_cv_lookup_ ## type(ptr, opline->op2.var EXECUTE_DATA_CC) #define UNDEF_RESULT() do { \ if (opline->result_type & (IS_VAR | IS_TMP_VAR)) { \ ZVAL_UNDEF(EX_VAR(opline->result.var)); \ } \ } while (0) #if ZEND_GCC_VERSION >= 4000 && !defined(__clang__) # pragma GCC push_options # pragma GCC optimize("no-gcse") # pragma GCC optimize("no-ivopts") #endif #include "zend_vm_execute.h" #if ZEND_GCC_VERSION >= 4000 && !defined(__clang__) # pragma GCC pop_options #endif ZEND_API int zend_set_user_opcode_handler(zend_uchar opcode, user_opcode_handler_t handler) { if (opcode != ZEND_USER_OPCODE) { if (handler == NULL) { /* restore the original handler */ zend_user_opcodes[opcode] = opcode; } else { zend_user_opcodes[opcode] = ZEND_USER_OPCODE; } zend_user_opcode_handlers[opcode] = handler; return SUCCESS; } return FAILURE; } ZEND_API user_opcode_handler_t zend_get_user_opcode_handler(zend_uchar opcode) { return zend_user_opcode_handlers[opcode]; } ZEND_API zval *zend_get_zval_ptr(const zend_op *opline, int op_type, const znode_op *node, const zend_execute_data *execute_data, zend_free_op *should_free, int type) { zval *ret; switch (op_type) { case IS_CONST: ret = RT_CONSTANT(opline, *node); *should_free = NULL; break; case IS_TMP_VAR: case IS_VAR: ret = EX_VAR(node->var); *should_free = ret; break; case IS_CV: ret = EX_VAR(node->var); *should_free = NULL; break; default: ret = NULL; *should_free = ret; break; } return ret; } ZEND_API void ZEND_FASTCALL zend_check_internal_arg_type(zend_function *zf, uint32_t arg_num, zval *arg) { void *dummy_cache_slot = NULL; zend_verify_arg_type(zf, arg_num, arg, NULL, &dummy_cache_slot); } ZEND_API int ZEND_FASTCALL zend_check_arg_type(zend_function *zf, uint32_t arg_num, zval *arg, zval *default_value, void **cache_slot) { return zend_verify_arg_type(zf, arg_num, arg, default_value, cache_slot); } /* * Local variables: * tab-width: 4 * c-basic-offset: 4 * indent-tabs-mode: t * End: * vim600: sw=4 ts=4 fdm=marker * vim<600: sw=4 ts=4 */