/
zend_builtin_functions.c
2341 lines (1964 loc) · 63.7 KB
/
zend_builtin_functions.c
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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2011 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 <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id: zend_builtin_functions.c 307522 2011-01-16 20:39:22Z stas $ */
#include "zend.h"
#include "zend_API.h"
#include "zend_builtin_functions.h"
#include "zend_constants.h"
#include "zend_ini.h"
#include "zend_exceptions.h"
#include "zend_extensions.h"
#include "zend_closures.h"
#undef ZEND_TEST_EXCEPTIONS
static ZEND_FUNCTION(zend_version);
static ZEND_FUNCTION(func_num_args);
static ZEND_FUNCTION(func_get_arg);
static ZEND_FUNCTION(func_get_args);
static ZEND_FUNCTION(strlen);
static ZEND_FUNCTION(strcmp);
static ZEND_FUNCTION(strncmp);
static ZEND_FUNCTION(strcasecmp);
static ZEND_FUNCTION(strncasecmp);
static ZEND_FUNCTION(each);
static ZEND_FUNCTION(error_reporting);
static ZEND_FUNCTION(define);
static ZEND_FUNCTION(defined);
static ZEND_FUNCTION(get_class);
static ZEND_FUNCTION(get_called_class);
static ZEND_FUNCTION(get_parent_class);
static ZEND_FUNCTION(method_exists);
static ZEND_FUNCTION(property_exists);
static ZEND_FUNCTION(class_exists);
static ZEND_FUNCTION(interface_exists);
static ZEND_FUNCTION(function_exists);
static ZEND_FUNCTION(class_alias);
#if ZEND_DEBUG
static ZEND_FUNCTION(leak);
#ifdef ZEND_TEST_EXCEPTIONS
static ZEND_FUNCTION(crash);
#endif
#endif
static ZEND_FUNCTION(get_included_files);
static ZEND_FUNCTION(is_subclass_of);
static ZEND_FUNCTION(is_a);
static ZEND_FUNCTION(get_class_vars);
static ZEND_FUNCTION(get_object_vars);
static ZEND_FUNCTION(get_class_methods);
static ZEND_FUNCTION(trigger_error);
static ZEND_FUNCTION(set_error_handler);
static ZEND_FUNCTION(restore_error_handler);
static ZEND_FUNCTION(set_exception_handler);
static ZEND_FUNCTION(restore_exception_handler);
static ZEND_FUNCTION(get_declared_classes);
static ZEND_FUNCTION(get_declared_interfaces);
static ZEND_FUNCTION(get_defined_functions);
static ZEND_FUNCTION(get_defined_vars);
static ZEND_FUNCTION(create_function);
static ZEND_FUNCTION(get_resource_type);
static ZEND_FUNCTION(get_loaded_extensions);
static ZEND_FUNCTION(extension_loaded);
static ZEND_FUNCTION(get_extension_funcs);
static ZEND_FUNCTION(get_defined_constants);
static ZEND_FUNCTION(debug_backtrace);
static ZEND_FUNCTION(debug_print_backtrace);
#if ZEND_DEBUG
static ZEND_FUNCTION(zend_test_func);
#ifdef ZTS
static ZEND_FUNCTION(zend_thread_id);
#endif
#endif
static ZEND_FUNCTION(gc_collect_cycles);
static ZEND_FUNCTION(gc_enabled);
static ZEND_FUNCTION(gc_enable);
static ZEND_FUNCTION(gc_disable);
/* {{{ arginfo */
ZEND_BEGIN_ARG_INFO(arginfo_zend__void, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_func_get_arg, 0, 0, 1)
ZEND_ARG_INFO(0, arg_num)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_strlen, 0, 0, 1)
ZEND_ARG_INFO(0, str)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_strcmp, 0, 0, 2)
ZEND_ARG_INFO(0, str1)
ZEND_ARG_INFO(0, str2)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_strncmp, 0, 0, 3)
ZEND_ARG_INFO(0, str1)
ZEND_ARG_INFO(0, str2)
ZEND_ARG_INFO(0, len)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_each, 0, 0, 1)
ZEND_ARG_INFO(1, arr)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_error_reporting, 0, 0, 0)
ZEND_ARG_INFO(0, new_error_level)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_define, 0, 0, 3)
ZEND_ARG_INFO(0, constant_name)
ZEND_ARG_INFO(0, value)
ZEND_ARG_INFO(0, case_insensitive)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_defined, 0, 0, 1)
ZEND_ARG_INFO(0, constant_name)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_get_class, 0, 0, 0)
ZEND_ARG_INFO(0, object)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_is_subclass_of, 0, 0, 2)
ZEND_ARG_INFO(0, object)
ZEND_ARG_INFO(0, class_name)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_get_class_vars, 0, 0, 1)
ZEND_ARG_INFO(0, class_name)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_get_object_vars, 0, 0, 1)
ZEND_ARG_INFO(0, obj)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_get_class_methods, 0, 0, 1)
ZEND_ARG_INFO(0, class)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_method_exists, 0, 0, 2)
ZEND_ARG_INFO(0, object)
ZEND_ARG_INFO(0, method)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_property_exists, 0, 0, 2)
ZEND_ARG_INFO(0, object_or_class)
ZEND_ARG_INFO(0, property_name)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_class_exists, 0, 0, 1)
ZEND_ARG_INFO(0, classname)
ZEND_ARG_INFO(0, autoload)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_function_exists, 0, 0, 1)
ZEND_ARG_INFO(0, function_name)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_class_alias, 0, 0, 2)
ZEND_ARG_INFO(0, user_class_name)
ZEND_ARG_INFO(0, alias_name)
ZEND_ARG_INFO(0, autoload)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_trigger_error, 0, 0, 1)
ZEND_ARG_INFO(0, message)
ZEND_ARG_INFO(0, error_type)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_set_error_handler, 0, 0, 1)
ZEND_ARG_INFO(0, error_handler)
ZEND_ARG_INFO(0, error_types)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_set_exception_handler, 0, 0, 1)
ZEND_ARG_INFO(0, exception_handler)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_create_function, 0, 0, 2)
ZEND_ARG_INFO(0, args)
ZEND_ARG_INFO(0, code)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_get_resource_type, 0, 0, 1)
ZEND_ARG_INFO(0, res)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_get_loaded_extensions, 0, 0, 0)
ZEND_ARG_INFO(0, zend_extensions)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_get_defined_constants, 0, 0, 0)
ZEND_ARG_INFO(0, categorize)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_debug_backtrace, 0, 0, 0)
ZEND_ARG_INFO(0, options)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_extension_loaded, 0, 0, 1)
ZEND_ARG_INFO(0, extension_name)
ZEND_END_ARG_INFO()
/* }}} */
static const zend_function_entry builtin_functions[] = { /* {{{ */
ZEND_FE(zend_version, arginfo_zend__void)
ZEND_FE(func_num_args, arginfo_zend__void)
ZEND_FE(func_get_arg, arginfo_func_get_arg)
ZEND_FE(func_get_args, arginfo_zend__void)
ZEND_FE(strlen, arginfo_strlen)
ZEND_FE(strcmp, arginfo_strcmp)
ZEND_FE(strncmp, arginfo_strncmp)
ZEND_FE(strcasecmp, arginfo_strcmp)
ZEND_FE(strncasecmp, arginfo_strncmp)
ZEND_FE(each, arginfo_each)
ZEND_FE(error_reporting, arginfo_error_reporting)
ZEND_FE(define, arginfo_define)
ZEND_FE(defined, arginfo_defined)
ZEND_FE(get_class, arginfo_get_class)
ZEND_FE(get_called_class, arginfo_zend__void)
ZEND_FE(get_parent_class, arginfo_get_class)
ZEND_FE(method_exists, arginfo_method_exists)
ZEND_FE(property_exists, arginfo_property_exists)
ZEND_FE(class_exists, arginfo_class_exists)
ZEND_FE(interface_exists, arginfo_class_exists)
ZEND_FE(function_exists, arginfo_function_exists)
ZEND_FE(class_alias, arginfo_class_alias)
#if ZEND_DEBUG
ZEND_FE(leak, NULL)
#ifdef ZEND_TEST_EXCEPTIONS
ZEND_FE(crash, NULL)
#endif
#endif
ZEND_FE(get_included_files, arginfo_zend__void)
ZEND_FALIAS(get_required_files, get_included_files, arginfo_zend__void)
ZEND_FE(is_subclass_of, arginfo_is_subclass_of)
ZEND_FE(is_a, arginfo_is_subclass_of)
ZEND_FE(get_class_vars, arginfo_get_class_vars)
ZEND_FE(get_object_vars, arginfo_get_object_vars)
ZEND_FE(get_class_methods, arginfo_get_class_methods)
ZEND_FE(trigger_error, arginfo_trigger_error)
ZEND_FALIAS(user_error, trigger_error, arginfo_trigger_error)
ZEND_FE(set_error_handler, arginfo_set_error_handler)
ZEND_FE(restore_error_handler, arginfo_zend__void)
ZEND_FE(set_exception_handler, arginfo_set_exception_handler)
ZEND_FE(restore_exception_handler, arginfo_zend__void)
ZEND_FE(get_declared_classes, arginfo_zend__void)
ZEND_FE(get_declared_interfaces, arginfo_zend__void)
ZEND_FE(get_defined_functions, arginfo_zend__void)
ZEND_FE(get_defined_vars, arginfo_zend__void)
ZEND_FE(create_function, arginfo_create_function)
ZEND_FE(get_resource_type, arginfo_get_resource_type)
ZEND_FE(get_loaded_extensions, arginfo_get_loaded_extensions)
ZEND_FE(extension_loaded, arginfo_extension_loaded)
ZEND_FE(get_extension_funcs, arginfo_extension_loaded)
ZEND_FE(get_defined_constants, arginfo_get_defined_constants)
ZEND_FE(debug_backtrace, arginfo_debug_backtrace)
ZEND_FE(debug_print_backtrace, arginfo_debug_backtrace)
#if ZEND_DEBUG
ZEND_FE(zend_test_func, NULL)
#ifdef ZTS
ZEND_FE(zend_thread_id, NULL)
#endif
#endif
ZEND_FE(gc_collect_cycles, arginfo_zend__void)
ZEND_FE(gc_enabled, arginfo_zend__void)
ZEND_FE(gc_enable, arginfo_zend__void)
ZEND_FE(gc_disable, arginfo_zend__void)
{ NULL, NULL, NULL }
};
/* }}} */
ZEND_MINIT_FUNCTION(core) { /* {{{ */
zend_class_entry class_entry;
INIT_CLASS_ENTRY(class_entry, "stdClass", NULL);
zend_standard_class_def = zend_register_internal_class(&class_entry TSRMLS_CC);
zend_register_default_classes(TSRMLS_C);
return SUCCESS;
}
/* }}} */
zend_module_entry zend_builtin_module = { /* {{{ */
STANDARD_MODULE_HEADER,
"Core",
builtin_functions,
ZEND_MINIT(core),
NULL,
NULL,
NULL,
NULL,
ZEND_VERSION,
STANDARD_MODULE_PROPERTIES
};
/* }}} */
int zend_startup_builtin_functions(TSRMLS_D) /* {{{ */
{
zend_builtin_module.module_number = 0;
zend_builtin_module.type = MODULE_PERSISTENT;
return (EG(current_module) = zend_register_module_ex(&zend_builtin_module TSRMLS_CC)) == NULL ? FAILURE : SUCCESS;
}
/* }}} */
/* {{{ proto string zend_version(void)
Get the version of the Zend Engine */
ZEND_FUNCTION(zend_version)
{
RETURN_STRINGL(ZEND_VERSION, sizeof(ZEND_VERSION)-1, 1);
}
/* }}} */
/* {{{ proto int gc_collect_cycles(void)
Forces collection of any existing garbage cycles.
Returns number of freed zvals */
ZEND_FUNCTION(gc_collect_cycles)
{
RETURN_LONG(gc_collect_cycles(TSRMLS_C));
}
/* }}} */
/* {{{ proto void gc_enabled(void)
Returns status of the circular reference collector */
ZEND_FUNCTION(gc_enabled)
{
RETURN_BOOL(GC_G(gc_enabled));
}
/* }}} */
/* {{{ proto void gc_enable(void)
Activates the circular reference collector */
ZEND_FUNCTION(gc_enable)
{
zend_alter_ini_entry("zend.enable_gc", sizeof("zend.enable_gc"), "1", sizeof("1")-1, ZEND_INI_USER, ZEND_INI_STAGE_RUNTIME);
}
/* }}} */
/* {{{ proto void gc_disable(void)
Deactivates the circular reference collector */
ZEND_FUNCTION(gc_disable)
{
zend_alter_ini_entry("zend.enable_gc", sizeof("zend.enable_gc"), "0", sizeof("0")-1, ZEND_INI_USER, ZEND_INI_STAGE_RUNTIME);
}
/* }}} */
/* {{{ proto int func_num_args(void)
Get the number of arguments that were passed to the function */
ZEND_FUNCTION(func_num_args)
{
zend_execute_data *ex = EG(current_execute_data)->prev_execute_data;
if (ex && ex->function_state.arguments) {
RETURN_LONG((long)(zend_uintptr_t)*(ex->function_state.arguments));
} else {
zend_error(E_WARNING, "func_num_args(): Called from the global scope - no function context");
RETURN_LONG(-1);
}
}
/* }}} */
/* {{{ proto mixed func_get_arg(int arg_num)
Get the $arg_num'th argument that was passed to the function */
ZEND_FUNCTION(func_get_arg)
{
void **p;
int arg_count;
zval *arg;
long requested_offset;
zend_execute_data *ex = EG(current_execute_data)->prev_execute_data;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &requested_offset) == FAILURE) {
return;
}
if (requested_offset < 0) {
zend_error(E_WARNING, "func_get_arg(): The argument number should be >= 0");
RETURN_FALSE;
}
if (!ex || !ex->function_state.arguments) {
zend_error(E_WARNING, "func_get_arg(): Called from the global scope - no function context");
RETURN_FALSE;
}
p = ex->function_state.arguments;
arg_count = (int)(zend_uintptr_t) *p; /* this is the amount of arguments passed to func_get_arg(); */
if (requested_offset >= arg_count) {
zend_error(E_WARNING, "func_get_arg(): Argument %ld not passed to function", requested_offset);
RETURN_FALSE;
}
arg = *(p-(arg_count-requested_offset));
*return_value = *arg;
zval_copy_ctor(return_value);
INIT_PZVAL(return_value);
}
/* }}} */
/* {{{ proto array func_get_args()
Get an array of the arguments that were passed to the function */
ZEND_FUNCTION(func_get_args)
{
void **p;
int arg_count;
int i;
zend_execute_data *ex = EG(current_execute_data)->prev_execute_data;
if (!ex || !ex->function_state.arguments) {
zend_error(E_WARNING, "func_get_args(): Called from the global scope - no function context");
RETURN_FALSE;
}
p = ex->function_state.arguments;
arg_count = (int)(zend_uintptr_t) *p; /* this is the amount of arguments passed to func_get_args(); */
array_init_size(return_value, arg_count);
for (i=0; i<arg_count; i++) {
zval *element;
ALLOC_ZVAL(element);
*element = **((zval **) (p-(arg_count-i)));
zval_copy_ctor(element);
INIT_PZVAL(element);
zend_hash_next_index_insert(return_value->value.ht, &element, sizeof(zval *), NULL);
}
}
/* }}} */
/* {{{ proto int strlen(string str)
Get string length */
ZEND_FUNCTION(strlen)
{
char *s1;
int s1_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &s1, &s1_len) == FAILURE) {
return;
}
RETVAL_LONG(s1_len);
}
/* }}} */
/* {{{ proto int strcmp(string str1, string str2)
Binary safe string comparison */
ZEND_FUNCTION(strcmp)
{
char *s1, *s2;
int s1_len, s2_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss", &s1, &s1_len, &s2, &s2_len) == FAILURE) {
return;
}
RETURN_LONG(zend_binary_strcmp(s1, s1_len, s2, s2_len));
}
/* }}} */
/* {{{ proto int strncmp(string str1, string str2, int len)
Binary safe string comparison */
ZEND_FUNCTION(strncmp)
{
char *s1, *s2;
int s1_len, s2_len;
long len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ssl", &s1, &s1_len, &s2, &s2_len, &len) == FAILURE) {
return;
}
if (len < 0) {
zend_error(E_WARNING, "Length must be greater than or equal to 0");
RETURN_FALSE;
}
RETURN_LONG(zend_binary_strncmp(s1, s1_len, s2, s2_len, len));
}
/* }}} */
/* {{{ proto int strcasecmp(string str1, string str2)
Binary safe case-insensitive string comparison */
ZEND_FUNCTION(strcasecmp)
{
char *s1, *s2;
int s1_len, s2_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss", &s1, &s1_len, &s2, &s2_len) == FAILURE) {
return;
}
RETURN_LONG(zend_binary_strcasecmp(s1, s1_len, s2, s2_len));
}
/* }}} */
/* {{{ proto int strncasecmp(string str1, string str2, int len)
Binary safe string comparison */
ZEND_FUNCTION(strncasecmp)
{
char *s1, *s2;
int s1_len, s2_len;
long len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ssl", &s1, &s1_len, &s2, &s2_len, &len) == FAILURE) {
return;
}
if (len < 0) {
zend_error(E_WARNING, "Length must be greater than or equal to 0");
RETURN_FALSE;
}
RETURN_LONG(zend_binary_strncasecmp(s1, s1_len, s2, s2_len, len));
}
/* }}} */
/* {{{ proto array each(array arr)
Return the currently pointed key..value pair in the passed array, and advance the pointer to the next element */
ZEND_FUNCTION(each)
{
zval *array, *entry, **entry_ptr, *tmp;
char *string_key;
uint string_key_len;
ulong num_key;
zval **inserted_pointer;
HashTable *target_hash;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &array) == FAILURE) {
return;
}
target_hash = HASH_OF(array);
if (!target_hash) {
zend_error(E_WARNING,"Variable passed to each() is not an array or object");
return;
}
if (zend_hash_get_current_data(target_hash, (void **) &entry_ptr)==FAILURE) {
RETURN_FALSE;
}
array_init(return_value);
entry = *entry_ptr;
/* add value elements */
if (Z_ISREF_P(entry)) {
ALLOC_ZVAL(tmp);
*tmp = *entry;
zval_copy_ctor(tmp);
Z_UNSET_ISREF_P(tmp);
Z_SET_REFCOUNT_P(tmp, 0);
entry=tmp;
}
zend_hash_index_update(return_value->value.ht, 1, &entry, sizeof(zval *), NULL);
Z_ADDREF_P(entry);
zend_hash_update(return_value->value.ht, "value", sizeof("value"), &entry, sizeof(zval *), NULL);
Z_ADDREF_P(entry);
/* add the key elements */
switch (zend_hash_get_current_key_ex(target_hash, &string_key, &string_key_len, &num_key, 1, NULL)) {
case HASH_KEY_IS_STRING:
add_get_index_stringl(return_value, 0, string_key, string_key_len-1, (void **) &inserted_pointer, 0);
break;
case HASH_KEY_IS_LONG:
add_get_index_long(return_value, 0, num_key, (void **) &inserted_pointer);
break;
}
zend_hash_update(return_value->value.ht, "key", sizeof("key"), inserted_pointer, sizeof(zval *), NULL);
Z_ADDREF_PP(inserted_pointer);
zend_hash_move_forward(target_hash);
}
/* }}} */
/* {{{ proto int error_reporting([int new_error_level])
Return the current error_reporting level, and if an argument was passed - change to the new level */
ZEND_FUNCTION(error_reporting)
{
char *err;
int err_len;
int old_error_reporting;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s", &err, &err_len) == FAILURE) {
return;
}
old_error_reporting = EG(error_reporting);
if(ZEND_NUM_ARGS() != 0) {
zend_alter_ini_entry("error_reporting", sizeof("error_reporting"), err, err_len, ZEND_INI_USER, ZEND_INI_STAGE_RUNTIME);
}
RETVAL_LONG(old_error_reporting);
}
/* }}} */
/* {{{ proto bool define(string constant_name, mixed value, boolean case_insensitive=false)
Define a new constant */
ZEND_FUNCTION(define)
{
char *name;
int name_len;
zval *val;
zval *val_free = NULL;
zend_bool non_cs = 0;
int case_sensitive = CONST_CS;
zend_constant c;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sz|b", &name, &name_len, &val, &non_cs) == FAILURE) {
return;
}
if(non_cs) {
case_sensitive = 0;
}
/* class constant, check if there is name and make sure class is valid & exists */
if (zend_memnstr(name, "::", sizeof("::") - 1, name + name_len)) {
zend_error(E_WARNING, "Class constants cannot be defined or redefined");
RETURN_FALSE;
}
repeat:
switch (Z_TYPE_P(val)) {
case IS_LONG:
case IS_DOUBLE:
case IS_STRING:
case IS_BOOL:
case IS_RESOURCE:
case IS_NULL:
break;
case IS_OBJECT:
if (!val_free) {
if (Z_OBJ_HT_P(val)->get) {
val_free = val = Z_OBJ_HT_P(val)->get(val TSRMLS_CC);
goto repeat;
} else if (Z_OBJ_HT_P(val)->cast_object) {
ALLOC_INIT_ZVAL(val_free);
if (Z_OBJ_HT_P(val)->cast_object(val, val_free, IS_STRING TSRMLS_CC) == SUCCESS) {
val = val_free;
break;
}
}
}
/* no break */
default:
zend_error(E_WARNING,"Constants may only evaluate to scalar values");
if (val_free) {
zval_ptr_dtor(&val_free);
}
RETURN_FALSE;
}
c.value = *val;
zval_copy_ctor(&c.value);
if (val_free) {
zval_ptr_dtor(&val_free);
}
c.flags = case_sensitive; /* non persistent */
c.name = zend_strndup(name, name_len);
c.name_len = name_len+1;
c.module_number = PHP_USER_CONSTANT;
if (zend_register_constant(&c TSRMLS_CC) == SUCCESS) {
RETURN_TRUE;
} else {
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto bool defined(string constant_name)
Check whether a constant exists */
ZEND_FUNCTION(defined)
{
char *name;
int name_len;
zval c;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &name, &name_len) == FAILURE) {
return;
}
if (zend_get_constant_ex(name, name_len, &c, NULL, ZEND_FETCH_CLASS_SILENT TSRMLS_CC)) {
zval_dtor(&c);
RETURN_TRUE;
} else {
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto string get_class([object object])
Retrieves the class name */
ZEND_FUNCTION(get_class)
{
zval *obj = NULL;
char *name = "";
zend_uint name_len = 0;
int dup;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|o!", &obj) == FAILURE) {
RETURN_FALSE;
}
if (!obj) {
if (EG(scope)) {
RETURN_STRINGL(EG(scope)->name, EG(scope)->name_length, 1);
} else {
zend_error(E_WARNING, "get_class() called without object from outside a class");
RETURN_FALSE;
}
}
dup = zend_get_object_classname(obj, &name, &name_len TSRMLS_CC);
RETURN_STRINGL(name, name_len, dup);
}
/* }}} */
/* {{{ proto string get_called_class()
Retrieves the "Late Static Binding" class name */
ZEND_FUNCTION(get_called_class)
{
if (zend_parse_parameters_none() == FAILURE) {
return;
}
if (EG(called_scope)) {
RETURN_STRINGL(EG(called_scope)->name, EG(called_scope)->name_length, 1);
} else if (!EG(scope)) {
zend_error(E_WARNING, "get_called_class() called from outside a class");
}
RETURN_FALSE;
}
/* }}} */
/* {{{ proto string get_parent_class([mixed object])
Retrieves the parent class name for object or class or current scope. */
ZEND_FUNCTION(get_parent_class)
{
zval *arg;
zend_class_entry *ce = NULL;
char *name;
zend_uint name_length;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|z", &arg) == FAILURE) {
return;
}
if (!ZEND_NUM_ARGS()) {
ce = EG(scope);
if (ce && ce->parent) {
RETURN_STRINGL(ce->parent->name, ce->parent->name_length, 1);
} else {
RETURN_FALSE;
}
}
if (Z_TYPE_P(arg) == IS_OBJECT) {
if (Z_OBJ_HT_P(arg)->get_class_name
&& Z_OBJ_HT_P(arg)->get_class_name(arg, &name, &name_length, 1 TSRMLS_CC) == SUCCESS) {
RETURN_STRINGL(name, name_length, 0);
} else {
ce = zend_get_class_entry(arg TSRMLS_CC);
}
} else if (Z_TYPE_P(arg) == IS_STRING) {
zend_class_entry **pce;
if (zend_lookup_class(Z_STRVAL_P(arg), Z_STRLEN_P(arg), &pce TSRMLS_CC) == SUCCESS) {
ce = *pce;
}
}
if (ce && ce->parent) {
RETURN_STRINGL(ce->parent->name, ce->parent->name_length, 1);
} else {
RETURN_FALSE;
}
}
/* }}} */
static void is_a_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool only_subclass)
{
zval *obj;
char *class_name;
int class_name_len;
zend_class_entry *instance_ce;
zend_class_entry **ce;
zend_bool retval;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "zs", &obj, &class_name, &class_name_len) == FAILURE) {
return;
}
if (only_subclass && Z_TYPE_P(obj) == IS_STRING) {
zend_class_entry **the_ce;
if (zend_lookup_class(Z_STRVAL_P(obj), Z_STRLEN_P(obj), &the_ce TSRMLS_CC) == FAILURE) {
zend_error(E_WARNING, "Unknown class passed as parameter");
RETURN_FALSE;
}
instance_ce = *the_ce;
} else if (Z_TYPE_P(obj) != IS_OBJECT) {
RETURN_FALSE;
} else {
instance_ce = NULL;
}
/* TBI!! new object handlers */
if (Z_TYPE_P(obj) == IS_OBJECT && !HAS_CLASS_ENTRY(*obj)) {
RETURN_FALSE;
}
if (zend_lookup_class_ex(class_name, class_name_len, 0, &ce TSRMLS_CC) == FAILURE) {
retval = 0;
} else {
if (only_subclass) {
if (!instance_ce) {
instance_ce = Z_OBJCE_P(obj)->parent;
} else {
instance_ce = instance_ce->parent;
}
} else {
instance_ce = Z_OBJCE_P(obj);
}
if (!instance_ce) {
RETURN_FALSE;
}
if (instanceof_function(instance_ce, *ce TSRMLS_CC)) {
retval = 1;
} else {
retval = 0;
}
}
RETURN_BOOL(retval);
}
/* {{{ proto bool is_subclass_of(object object, string class_name)
Returns true if the object has this class as one of its parents */
ZEND_FUNCTION(is_subclass_of)
{
is_a_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
/* }}} */
/* {{{ proto bool is_a(object object, string class_name)
Returns true if the object is of this class or has this class as one of its parents */
ZEND_FUNCTION(is_a)
{
is_a_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ add_class_vars */
static void add_class_vars(zend_class_entry *ce, HashTable *properties, zval *return_value TSRMLS_DC)
{
if (zend_hash_num_elements(properties) > 0) {
HashPosition pos;
zval **prop;
zend_hash_internal_pointer_reset_ex(properties, &pos);
while (zend_hash_get_current_data_ex(properties, (void **) &prop, &pos) == SUCCESS) {
char *key, *class_name, *prop_name;
uint key_len;
ulong num_index;
int prop_name_len = 0;
zval *prop_copy;
zend_property_info *property_info;
zval zprop_name;
zend_hash_get_current_key_ex(properties, &key, &key_len, &num_index, 0, &pos);
zend_hash_move_forward_ex(properties, &pos);
zend_unmangle_property_name(key, key_len-1, &class_name, &prop_name);
prop_name_len = strlen(prop_name);
ZVAL_STRINGL(&zprop_name, prop_name, prop_name_len, 0);
property_info = zend_get_property_info(ce, &zprop_name, 1 TSRMLS_CC);
if (!property_info || property_info == &EG(std_property_info)) {
continue;
}
/* copy: enforce read only access */
ALLOC_ZVAL(prop_copy);
*prop_copy = **prop;
zval_copy_ctor(prop_copy);
INIT_PZVAL(prop_copy);
/* this is necessary to make it able to work with default array
* properties, returned to user */
if (Z_TYPE_P(prop_copy) == IS_CONSTANT_ARRAY || (Z_TYPE_P(prop_copy) & IS_CONSTANT_TYPE_MASK) == IS_CONSTANT) {
zval_update_constant(&prop_copy, 0 TSRMLS_CC);
}
add_assoc_zval(return_value, prop_name, prop_copy);
}
}
}
/* }}} */
/* {{{ proto array get_class_vars(string class_name)
Returns an array of default properties of the class. */
ZEND_FUNCTION(get_class_vars)
{
char *class_name;
int class_name_len;
zend_class_entry **pce;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &class_name, &class_name_len) == FAILURE) {
return;
}
if (zend_lookup_class(class_name, class_name_len, &pce TSRMLS_CC) == FAILURE) {
RETURN_FALSE;
} else {
array_init(return_value);
zend_update_class_constants(*pce TSRMLS_CC);
add_class_vars(*pce, &(*pce)->default_properties, return_value TSRMLS_CC);
add_class_vars(*pce, CE_STATIC_MEMBERS(*pce), return_value TSRMLS_CC);
}
}
/* }}} */
/* {{{ proto array get_object_vars(object obj)
Returns an array of object properties */
ZEND_FUNCTION(get_object_vars)
{
zval *obj;
zval **value;
HashTable *properties;
HashPosition pos;
char *key, *prop_name, *class_name;
uint key_len;
ulong num_index;
zend_object *zobj;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "o", &obj) == FAILURE) {
return;
}
if (Z_OBJ_HT_P(obj)->get_properties == NULL) {
RETURN_FALSE;
}
properties = Z_OBJ_HT_P(obj)->get_properties(obj TSRMLS_CC);
if (properties == NULL) {
RETURN_FALSE;
}
zobj = zend_objects_get_address(obj TSRMLS_CC);
array_init(return_value);
zend_hash_internal_pointer_reset_ex(properties, &pos);
while (zend_hash_get_current_data_ex(properties, (void **) &value, &pos) == SUCCESS) {
if (zend_hash_get_current_key_ex(properties, &key, &key_len, &num_index, 0, &pos) == HASH_KEY_IS_STRING) {
if (zend_check_property_access(zobj, key, key_len-1 TSRMLS_CC) == SUCCESS) {
zend_unmangle_property_name(key, key_len-1, &class_name, &prop_name);
/* Not separating references */
Z_ADDREF_PP(value);