File: //usr/src/debug/lsphp82-8.2.29-2.el9.x86_64/Zend/zend_builtin_functions.c
/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 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 |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <[email protected]> |
| Zeev Suraski <[email protected]> |
+----------------------------------------------------------------------+
*/
#include "zend.h"
#include "zend_API.h"
#include "zend_attributes.h"
#include "zend_gc.h"
#include "zend_builtin_functions.h"
#include "zend_constants.h"
#include "zend_ini.h"
#include "zend_interfaces.h"
#include "zend_exceptions.h"
#include "zend_extensions.h"
#include "zend_closures.h"
#include "zend_generators.h"
#include "zend_builtin_functions_arginfo.h"
#include "zend_smart_str.h"
/* }}} */
ZEND_MINIT_FUNCTION(core) { /* {{{ */
zend_register_default_classes();
zend_standard_class_def = register_class_stdClass();
return SUCCESS;
}
/* }}} */
zend_module_entry zend_builtin_module = { /* {{{ */
STANDARD_MODULE_HEADER,
"Core",
ext_functions,
ZEND_MINIT(core),
NULL,
NULL,
NULL,
NULL,
ZEND_VERSION,
STANDARD_MODULE_PROPERTIES
};
/* }}} */
zend_result zend_startup_builtin_functions(void) /* {{{ */
{
zend_builtin_module.module_number = 0;
zend_builtin_module.type = MODULE_PERSISTENT;
return (EG(current_module) = zend_register_module_ex(&zend_builtin_module)) == NULL ? FAILURE : SUCCESS;
}
/* }}} */
/* {{{ Get the version of the Zend Engine */
ZEND_FUNCTION(zend_version)
{
ZEND_PARSE_PARAMETERS_NONE();
RETURN_STRINGL(ZEND_VERSION, sizeof(ZEND_VERSION)-1);
}
/* }}} */
/* {{{ Reclaims memory used by MM caches.
Returns number of freed bytes */
ZEND_FUNCTION(gc_mem_caches)
{
ZEND_PARSE_PARAMETERS_NONE();
RETURN_LONG(zend_mm_gc(zend_mm_get_heap()));
}
/* }}} */
/* {{{ Forces collection of any existing garbage cycles.
Returns number of freed zvals */
ZEND_FUNCTION(gc_collect_cycles)
{
ZEND_PARSE_PARAMETERS_NONE();
RETURN_LONG(gc_collect_cycles());
}
/* }}} */
/* {{{ Returns status of the circular reference collector */
ZEND_FUNCTION(gc_enabled)
{
ZEND_PARSE_PARAMETERS_NONE();
RETURN_BOOL(gc_enabled());
}
/* }}} */
/* {{{ Activates the circular reference collector */
ZEND_FUNCTION(gc_enable)
{
zend_string *key;
ZEND_PARSE_PARAMETERS_NONE();
key = zend_string_init("zend.enable_gc", sizeof("zend.enable_gc")-1, 0);
zend_alter_ini_entry_chars(key, "1", sizeof("1")-1, ZEND_INI_USER, ZEND_INI_STAGE_RUNTIME);
zend_string_release_ex(key, 0);
}
/* }}} */
/* {{{ Deactivates the circular reference collector */
ZEND_FUNCTION(gc_disable)
{
zend_string *key;
ZEND_PARSE_PARAMETERS_NONE();
key = zend_string_init("zend.enable_gc", sizeof("zend.enable_gc")-1, 0);
zend_alter_ini_entry_chars(key, "0", sizeof("0")-1, ZEND_INI_USER, ZEND_INI_STAGE_RUNTIME);
zend_string_release_ex(key, 0);
}
/* }}} */
/* {{{ Returns current GC statistics */
ZEND_FUNCTION(gc_status)
{
zend_gc_status status;
ZEND_PARSE_PARAMETERS_NONE();
zend_gc_get_status(&status);
array_init_size(return_value, 3);
add_assoc_long_ex(return_value, "runs", sizeof("runs")-1, (long)status.runs);
add_assoc_long_ex(return_value, "collected", sizeof("collected")-1, (long)status.collected);
add_assoc_long_ex(return_value, "threshold", sizeof("threshold")-1, (long)status.threshold);
add_assoc_long_ex(return_value, "roots", sizeof("roots")-1, (long)status.num_roots);
}
/* }}} */
/* {{{ Get the number of arguments that were passed to the function */
ZEND_FUNCTION(func_num_args)
{
zend_execute_data *ex = EX(prev_execute_data);
ZEND_PARSE_PARAMETERS_NONE();
if (ex && (ZEND_CALL_INFO(ex) & ZEND_CALL_CODE)) {
zend_throw_error(NULL, "func_num_args() must be called from a function context");
RETURN_THROWS();
}
if (zend_forbid_dynamic_call() == FAILURE) {
RETURN_LONG(-1);
}
RETURN_LONG(ZEND_CALL_NUM_ARGS(ex));
}
/* }}} */
/* {{{ Get the $arg_num'th argument that was passed to the function */
ZEND_FUNCTION(func_get_arg)
{
uint32_t arg_count, first_extra_arg;
zval *arg;
zend_long requested_offset;
zend_execute_data *ex;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &requested_offset) == FAILURE) {
RETURN_THROWS();
}
if (requested_offset < 0) {
zend_argument_value_error(1, "must be greater than or equal to 0");
RETURN_THROWS();
}
ex = EX(prev_execute_data);
if (ex && (ZEND_CALL_INFO(ex) & ZEND_CALL_CODE)) {
zend_throw_error(NULL, "func_get_arg() cannot be called from the global scope");
RETURN_THROWS();
}
if (zend_forbid_dynamic_call() == FAILURE) {
RETURN_THROWS();
}
arg_count = ZEND_CALL_NUM_ARGS(ex);
if ((zend_ulong)requested_offset >= arg_count) {
zend_argument_value_error(1, "must be less than the number of the arguments passed to the currently executed function");
RETURN_THROWS();
}
first_extra_arg = ex->func->op_array.num_args;
if ((zend_ulong)requested_offset >= first_extra_arg && (ZEND_CALL_NUM_ARGS(ex) > first_extra_arg)) {
arg = ZEND_CALL_VAR_NUM(ex, ex->func->op_array.last_var + ex->func->op_array.T) + (requested_offset - first_extra_arg);
} else {
arg = ZEND_CALL_ARG(ex, requested_offset + 1);
}
if (EXPECTED(!Z_ISUNDEF_P(arg))) {
RETURN_COPY_DEREF(arg);
}
}
/* }}} */
/* {{{ Get an array of the arguments that were passed to the function */
ZEND_FUNCTION(func_get_args)
{
zval *p, *q;
uint32_t arg_count, first_extra_arg;
uint32_t i;
zend_execute_data *ex = EX(prev_execute_data);
ZEND_PARSE_PARAMETERS_NONE();
if (ex && (ZEND_CALL_INFO(ex) & ZEND_CALL_CODE)) {
zend_throw_error(NULL, "func_get_args() cannot be called from the global scope");
RETURN_THROWS();
}
if (zend_forbid_dynamic_call() == FAILURE) {
RETURN_THROWS();
}
arg_count = ZEND_CALL_NUM_ARGS(ex);
if (arg_count) {
array_init_size(return_value, arg_count);
first_extra_arg = ex->func->op_array.num_args;
zend_hash_real_init_packed(Z_ARRVAL_P(return_value));
ZEND_HASH_FILL_PACKED(Z_ARRVAL_P(return_value)) {
i = 0;
p = ZEND_CALL_ARG(ex, 1);
if (arg_count > first_extra_arg) {
while (i < first_extra_arg) {
q = p;
if (EXPECTED(Z_TYPE_INFO_P(q) != IS_UNDEF)) {
ZVAL_DEREF(q);
if (Z_OPT_REFCOUNTED_P(q)) {
Z_ADDREF_P(q);
}
ZEND_HASH_FILL_SET(q);
} else {
ZEND_HASH_FILL_SET_NULL();
}
ZEND_HASH_FILL_NEXT();
p++;
i++;
}
p = ZEND_CALL_VAR_NUM(ex, ex->func->op_array.last_var + ex->func->op_array.T);
}
while (i < arg_count) {
q = p;
if (EXPECTED(Z_TYPE_INFO_P(q) != IS_UNDEF)) {
ZVAL_DEREF(q);
if (Z_OPT_REFCOUNTED_P(q)) {
Z_ADDREF_P(q);
}
ZEND_HASH_FILL_SET(q);
} else {
ZEND_HASH_FILL_SET_NULL();
}
ZEND_HASH_FILL_NEXT();
p++;
i++;
}
} ZEND_HASH_FILL_END();
Z_ARRVAL_P(return_value)->nNumOfElements = arg_count;
} else {
RETURN_EMPTY_ARRAY();
}
}
/* }}} */
/* {{{ Get string length
Warning: This function is special-cased by zend_compile.c and so is usually bypassed */
ZEND_FUNCTION(strlen)
{
zend_string *s;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_STR(s)
ZEND_PARSE_PARAMETERS_END();
RETVAL_LONG(ZSTR_LEN(s));
}
/* }}} */
/* {{{ Binary safe string comparison */
ZEND_FUNCTION(strcmp)
{
zend_string *s1, *s2;
ZEND_PARSE_PARAMETERS_START(2, 2)
Z_PARAM_STR(s1)
Z_PARAM_STR(s2)
ZEND_PARSE_PARAMETERS_END();
RETURN_LONG(zend_binary_strcmp(ZSTR_VAL(s1), ZSTR_LEN(s1), ZSTR_VAL(s2), ZSTR_LEN(s2)));
}
/* }}} */
/* {{{ Binary safe string comparison */
ZEND_FUNCTION(strncmp)
{
zend_string *s1, *s2;
zend_long len;
ZEND_PARSE_PARAMETERS_START(3, 3)
Z_PARAM_STR(s1)
Z_PARAM_STR(s2)
Z_PARAM_LONG(len)
ZEND_PARSE_PARAMETERS_END();
if (len < 0) {
zend_argument_value_error(3, "must be greater than or equal to 0");
RETURN_THROWS();
}
RETURN_LONG(zend_binary_strncmp(ZSTR_VAL(s1), ZSTR_LEN(s1), ZSTR_VAL(s2), ZSTR_LEN(s2), len));
}
/* }}} */
/* {{{ Binary safe case-insensitive string comparison */
ZEND_FUNCTION(strcasecmp)
{
zend_string *s1, *s2;
ZEND_PARSE_PARAMETERS_START(2, 2)
Z_PARAM_STR(s1)
Z_PARAM_STR(s2)
ZEND_PARSE_PARAMETERS_END();
RETURN_LONG(zend_binary_strcasecmp(ZSTR_VAL(s1), ZSTR_LEN(s1), ZSTR_VAL(s2), ZSTR_LEN(s2)));
}
/* }}} */
/* {{{ Binary safe string comparison */
ZEND_FUNCTION(strncasecmp)
{
zend_string *s1, *s2;
zend_long len;
ZEND_PARSE_PARAMETERS_START(3, 3)
Z_PARAM_STR(s1)
Z_PARAM_STR(s2)
Z_PARAM_LONG(len)
ZEND_PARSE_PARAMETERS_END();
if (len < 0) {
zend_argument_value_error(3, "must be greater than or equal to 0");
RETURN_THROWS();
}
RETURN_LONG(zend_binary_strncasecmp(ZSTR_VAL(s1), ZSTR_LEN(s1), ZSTR_VAL(s2), ZSTR_LEN(s2), len));
}
/* }}} */
/* {{{ Return the current error_reporting level, and if an argument was passed - change to the new level */
ZEND_FUNCTION(error_reporting)
{
zend_long err;
bool err_is_null = 1;
int old_error_reporting;
ZEND_PARSE_PARAMETERS_START(0, 1)
Z_PARAM_OPTIONAL
Z_PARAM_LONG_OR_NULL(err, err_is_null)
ZEND_PARSE_PARAMETERS_END();
old_error_reporting = EG(error_reporting);
if (!err_is_null && err != old_error_reporting) {
zend_ini_entry *p = EG(error_reporting_ini_entry);
if (!p) {
zval *zv = zend_hash_find_known_hash(EG(ini_directives), ZSTR_KNOWN(ZEND_STR_ERROR_REPORTING));
if (!zv) {
/* Ini setting does not exist -- can this happen? */
RETURN_LONG(old_error_reporting);
}
p = EG(error_reporting_ini_entry) = (zend_ini_entry*)Z_PTR_P(zv);
}
if (!p->modified) {
if (!EG(modified_ini_directives)) {
ALLOC_HASHTABLE(EG(modified_ini_directives));
zend_hash_init(EG(modified_ini_directives), 8, NULL, NULL, 0);
}
if (EXPECTED(zend_hash_add_ptr(EG(modified_ini_directives), ZSTR_KNOWN(ZEND_STR_ERROR_REPORTING), p) != NULL)) {
p->orig_value = p->value;
p->orig_modifiable = p->modifiable;
p->modified = 1;
}
} else if (p->orig_value != p->value) {
zend_string_release_ex(p->value, 0);
}
p->value = zend_long_to_str(err);
EG(error_reporting) = err;
}
RETURN_LONG(old_error_reporting);
}
/* }}} */
static bool validate_constant_array_argument(HashTable *ht, int argument_number) /* {{{ */
{
bool ret = 1;
zval *val;
GC_PROTECT_RECURSION(ht);
ZEND_HASH_FOREACH_VAL(ht, val) {
ZVAL_DEREF(val);
if (Z_TYPE_P(val) == IS_ARRAY && Z_REFCOUNTED_P(val)) {
if (Z_IS_RECURSIVE_P(val)) {
zend_argument_value_error(argument_number, "cannot be a recursive array");
ret = 0;
break;
} else if (!validate_constant_array_argument(Z_ARRVAL_P(val), argument_number)) {
ret = 0;
break;
}
}
} ZEND_HASH_FOREACH_END();
GC_UNPROTECT_RECURSION(ht);
return ret;
}
/* }}} */
static void copy_constant_array(zval *dst, zval *src) /* {{{ */
{
zend_string *key;
zend_ulong idx;
zval *new_val, *val;
array_init_size(dst, zend_hash_num_elements(Z_ARRVAL_P(src)));
ZEND_HASH_FOREACH_KEY_VAL(Z_ARRVAL_P(src), idx, key, val) {
/* constant arrays can't contain references */
ZVAL_DEREF(val);
if (key) {
new_val = zend_hash_add_new(Z_ARRVAL_P(dst), key, val);
} else {
new_val = zend_hash_index_add_new(Z_ARRVAL_P(dst), idx, val);
}
if (Z_TYPE_P(val) == IS_ARRAY) {
if (Z_REFCOUNTED_P(val)) {
copy_constant_array(new_val, val);
}
} else {
Z_TRY_ADDREF_P(val);
}
} ZEND_HASH_FOREACH_END();
}
/* }}} */
/* {{{ Define a new constant */
ZEND_FUNCTION(define)
{
zend_string *name;
zval *val, val_free;
bool non_cs = 0;
zend_constant c;
ZEND_PARSE_PARAMETERS_START(2, 3)
Z_PARAM_STR(name)
Z_PARAM_ZVAL(val)
Z_PARAM_OPTIONAL
Z_PARAM_BOOL(non_cs)
ZEND_PARSE_PARAMETERS_END();
if (zend_memnstr(ZSTR_VAL(name), "::", sizeof("::") - 1, ZSTR_VAL(name) + ZSTR_LEN(name))) {
zend_argument_value_error(1, "cannot be a class constant");
RETURN_THROWS();
}
if (non_cs) {
zend_error(E_WARNING, "define(): Argument #3 ($case_insensitive) is ignored since declaration of case-insensitive constants is no longer supported");
}
ZVAL_UNDEF(&val_free);
if (Z_TYPE_P(val) == IS_ARRAY) {
if (Z_REFCOUNTED_P(val)) {
if (!validate_constant_array_argument(Z_ARRVAL_P(val), 2)) {
RETURN_THROWS();
} else {
copy_constant_array(&c.value, val);
goto register_constant;
}
}
}
ZVAL_COPY(&c.value, val);
zval_ptr_dtor(&val_free);
register_constant:
/* non persistent */
ZEND_CONSTANT_SET_FLAGS(&c, CONST_CS, PHP_USER_CONSTANT);
c.name = zend_string_copy(name);
if (zend_register_constant(&c) == SUCCESS) {
RETURN_TRUE;
} else {
RETURN_FALSE;
}
}
/* }}} */
/* {{{ Check whether a constant exists
Warning: This function is special-cased by zend_compile.c and so is usually bypassed */
ZEND_FUNCTION(defined)
{
zend_string *name;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_STR(name)
ZEND_PARSE_PARAMETERS_END();
if (zend_get_constant_ex(name, zend_get_executed_scope(), ZEND_FETCH_CLASS_SILENT)) {
RETURN_TRUE;
} else {
RETURN_FALSE;
}
}
/* }}} */
/* {{{ Retrieves the class name */
ZEND_FUNCTION(get_class)
{
zval *obj = NULL;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|o", &obj) == FAILURE) {
RETURN_THROWS();
}
if (!obj) {
zend_class_entry *scope = zend_get_executed_scope();
if (scope) {
RETURN_STR_COPY(scope->name);
} else {
zend_throw_error(NULL, "get_class() without arguments must be called from within a class");
RETURN_THROWS();
}
}
RETURN_STR_COPY(Z_OBJCE_P(obj)->name);
}
/* }}} */
/* {{{ Retrieves the "Late Static Binding" class name */
ZEND_FUNCTION(get_called_class)
{
zend_class_entry *called_scope;
ZEND_PARSE_PARAMETERS_NONE();
called_scope = zend_get_called_scope(execute_data);
if (!called_scope) {
zend_throw_error(NULL, "get_called_class() must be called from within a class");
RETURN_THROWS();
}
RETURN_STR_COPY(called_scope->name);
}
/* }}} */
/* {{{ Retrieves the parent class name for object or class or current scope or false if not in a scope. */
ZEND_FUNCTION(get_parent_class)
{
zend_class_entry *ce = NULL;
ZEND_PARSE_PARAMETERS_START(0, 1)
Z_PARAM_OPTIONAL
Z_PARAM_OBJ_OR_CLASS_NAME(ce)
ZEND_PARSE_PARAMETERS_END();
if (!ce) {
ce = zend_get_executed_scope();
}
if (ce && ce->parent) {
RETURN_STR_COPY(ce->parent->name);
} else {
RETURN_FALSE;
}
}
/* }}} */
static void is_a_impl(INTERNAL_FUNCTION_PARAMETERS, bool only_subclass) /* {{{ */
{
zval *obj;
zend_string *class_name;
zend_class_entry *instance_ce;
zend_class_entry *ce;
bool allow_string = only_subclass;
bool retval;
ZEND_PARSE_PARAMETERS_START(2, 3)
Z_PARAM_ZVAL(obj)
Z_PARAM_STR(class_name)
Z_PARAM_OPTIONAL
Z_PARAM_BOOL(allow_string)
ZEND_PARSE_PARAMETERS_END();
/*
* allow_string - is_a default is no, is_subclass_of is yes.
* if it's allowed, then the autoloader will be called if the class does not exist.
* default behaviour is different, as 'is_a' used to be used to test mixed return values
* and there is no easy way to deprecate this.
*/
if (allow_string && Z_TYPE_P(obj) == IS_STRING) {
instance_ce = zend_lookup_class(Z_STR_P(obj));
if (!instance_ce) {
RETURN_FALSE;
}
} else if (Z_TYPE_P(obj) == IS_OBJECT) {
instance_ce = Z_OBJCE_P(obj);
} else {
RETURN_FALSE;
}
if (!only_subclass && EXPECTED(zend_string_equals(instance_ce->name, class_name))) {
retval = 1;
} else {
ce = zend_lookup_class_ex(class_name, NULL, ZEND_FETCH_CLASS_NO_AUTOLOAD);
if (!ce) {
retval = 0;
} else {
if (only_subclass && instance_ce == ce) {
retval = 0;
} else {
retval = instanceof_function(instance_ce, ce);
}
}
}
RETURN_BOOL(retval);
}
/* }}} */
/* {{{ 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);
}
/* }}} */
/* {{{ Returns true if the first argument is an object and is this class or has this class as one of its parents, */
ZEND_FUNCTION(is_a)
{
is_a_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ add_class_vars */
static void add_class_vars(zend_class_entry *scope, zend_class_entry *ce, bool statics, zval *return_value)
{
zend_property_info *prop_info;
zval *prop, prop_copy;
zend_string *key;
zval *default_properties_table = CE_DEFAULT_PROPERTIES_TABLE(ce);
ZEND_HASH_MAP_FOREACH_STR_KEY_PTR(&ce->properties_info, key, prop_info) {
if (((prop_info->flags & ZEND_ACC_PROTECTED) &&
!zend_check_protected(prop_info->ce, scope)) ||
((prop_info->flags & ZEND_ACC_PRIVATE) &&
prop_info->ce != scope)) {
continue;
}
prop = NULL;
if (statics && (prop_info->flags & ZEND_ACC_STATIC) != 0) {
prop = &ce->default_static_members_table[prop_info->offset];
ZVAL_DEINDIRECT(prop);
} else if (!statics && (prop_info->flags & ZEND_ACC_STATIC) == 0) {
prop = &default_properties_table[OBJ_PROP_TO_NUM(prop_info->offset)];
}
if (!prop) {
continue;
}
if (Z_ISUNDEF_P(prop)) {
/* Return uninitialized typed properties as a null value */
ZVAL_NULL(&prop_copy);
} else {
/* copy: enforce read only access */
ZVAL_COPY_OR_DUP(&prop_copy, prop);
}
prop = &prop_copy;
/* this is necessary to make it able to work with default array
* properties, returned to user */
if (Z_OPT_TYPE_P(prop) == IS_CONSTANT_AST) {
if (UNEXPECTED(zval_update_constant_ex(prop, ce) != SUCCESS)) {
return;
}
}
zend_hash_add_new(Z_ARRVAL_P(return_value), key, prop);
} ZEND_HASH_FOREACH_END();
}
/* }}} */
/* {{{ Returns an array of default properties of the class. */
ZEND_FUNCTION(get_class_vars)
{
zend_class_entry *ce = NULL, *scope;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "C", &ce) == FAILURE) {
RETURN_THROWS();
}
array_init(return_value);
if (UNEXPECTED(!(ce->ce_flags & ZEND_ACC_CONSTANTS_UPDATED))) {
if (UNEXPECTED(zend_update_class_constants(ce) != SUCCESS)) {
return;
}
}
scope = zend_get_executed_scope();
add_class_vars(scope, ce, 0, return_value);
add_class_vars(scope, ce, 1, return_value);
}
/* }}} */
/* {{{ Returns an array of object properties */
ZEND_FUNCTION(get_object_vars)
{
zval *value;
HashTable *properties;
zend_string *key;
zend_object *zobj;
zend_ulong num_key;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_OBJ(zobj)
ZEND_PARSE_PARAMETERS_END();
properties = zobj->handlers->get_properties(zobj);
if (properties == NULL) {
RETURN_EMPTY_ARRAY();
}
if (!zobj->ce->default_properties_count && properties == zobj->properties && !GC_IS_RECURSIVE(properties)) {
/* fast copy */
if (EXPECTED(zobj->handlers == &std_object_handlers)) {
RETURN_ARR(zend_proptable_to_symtable(properties, 0));
}
RETURN_ARR(zend_proptable_to_symtable(properties, 1));
} else {
array_init_size(return_value, zend_hash_num_elements(properties));
ZEND_HASH_FOREACH_KEY_VAL(properties, num_key, key, value) {
bool is_dynamic = 1;
if (Z_TYPE_P(value) == IS_INDIRECT) {
value = Z_INDIRECT_P(value);
if (UNEXPECTED(Z_ISUNDEF_P(value))) {
continue;
}
is_dynamic = 0;
}
if (key && zend_check_property_access(zobj, key, is_dynamic) == FAILURE) {
continue;
}
if (Z_ISREF_P(value) && Z_REFCOUNT_P(value) == 1) {
value = Z_REFVAL_P(value);
}
Z_TRY_ADDREF_P(value);
if (UNEXPECTED(!key)) {
/* This case is only possible due to loopholes, e.g. ArrayObject */
zend_hash_index_add(Z_ARRVAL_P(return_value), num_key, value);
} else if (!is_dynamic && ZSTR_VAL(key)[0] == 0) {
const char *prop_name, *class_name;
size_t prop_len;
zend_unmangle_property_name_ex(key, &class_name, &prop_name, &prop_len);
/* We assume here that a mangled property name is never
* numeric. This is probably a safe assumption, but
* theoretically someone might write an extension with
* private, numeric properties. Well, too bad.
*/
zend_hash_str_add_new(Z_ARRVAL_P(return_value), prop_name, prop_len, value);
} else {
zend_symtable_add_new(Z_ARRVAL_P(return_value), key, value);
}
} ZEND_HASH_FOREACH_END();
}
}
/* }}} */
/* {{{ Returns an array of mangled object properties. Does not respect property visibility. */
ZEND_FUNCTION(get_mangled_object_vars)
{
zend_object *obj;
HashTable *properties;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_OBJ(obj)
ZEND_PARSE_PARAMETERS_END();
properties = obj->handlers->get_properties(obj);
if (!properties) {
ZVAL_EMPTY_ARRAY(return_value);
return;
}
properties = zend_proptable_to_symtable(properties,
(obj->ce->default_properties_count ||
obj->handlers != &std_object_handlers ||
GC_IS_RECURSIVE(properties)));
RETURN_ARR(properties);
}
/* }}} */
/* {{{ Returns an array of method names for class or class instance. */
ZEND_FUNCTION(get_class_methods)
{
zval method_name;
zend_class_entry *ce = NULL;
zend_class_entry *scope;
zend_function *mptr;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_OBJ_OR_CLASS_NAME(ce)
ZEND_PARSE_PARAMETERS_END();
array_init(return_value);
scope = zend_get_executed_scope();
ZEND_HASH_MAP_FOREACH_PTR(&ce->function_table, mptr) {
if ((mptr->common.fn_flags & ZEND_ACC_PUBLIC)
|| (scope &&
(((mptr->common.fn_flags & ZEND_ACC_PROTECTED) &&
zend_check_protected(mptr->common.scope, scope))
|| ((mptr->common.fn_flags & ZEND_ACC_PRIVATE) &&
scope == mptr->common.scope)))
) {
ZVAL_STR_COPY(&method_name, mptr->common.function_name);
zend_hash_next_index_insert_new(Z_ARRVAL_P(return_value), &method_name);
}
} ZEND_HASH_FOREACH_END();
}
/* }}} */
/* {{{ Checks if the class method exists */
ZEND_FUNCTION(method_exists)
{
zval *klass;
zend_string *method_name;
zend_string *lcname;
zend_class_entry *ce;
zend_function *func;
ZEND_PARSE_PARAMETERS_START(2, 2)
Z_PARAM_ZVAL(klass)
Z_PARAM_STR(method_name)
ZEND_PARSE_PARAMETERS_END();
if (Z_TYPE_P(klass) == IS_OBJECT) {
ce = Z_OBJCE_P(klass);
} else if (Z_TYPE_P(klass) == IS_STRING) {
if ((ce = zend_lookup_class(Z_STR_P(klass))) == NULL) {
RETURN_FALSE;
}
} else {
zend_argument_type_error(1, "must be of type object|string, %s given", zend_zval_type_name(klass));
RETURN_THROWS();
}
lcname = zend_string_tolower(method_name);
func = zend_hash_find_ptr(&ce->function_table, lcname);
zend_string_release_ex(lcname, 0);
if (func) {
/* Exclude shadow properties when checking a method on a specific class. Include
* them when checking an object, as method_exists() generally ignores visibility.
* TODO: Should we use EG(scope) for the object case instead? */
RETURN_BOOL(Z_TYPE_P(klass) == IS_OBJECT
|| !(func->common.fn_flags & ZEND_ACC_PRIVATE) || func->common.scope == ce);
}
if (Z_TYPE_P(klass) == IS_OBJECT) {
zend_object *obj = Z_OBJ_P(klass);
func = Z_OBJ_HT_P(klass)->get_method(&obj, method_name, NULL);
if (func != NULL) {
if (func->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE) {
/* Returns true for the fake Closure's __invoke */
RETVAL_BOOL(func->common.scope == zend_ce_closure
&& zend_string_equals_literal_ci(method_name, ZEND_INVOKE_FUNC_NAME));
zend_string_release_ex(func->common.function_name, 0);
zend_free_trampoline(func);
return;
}
RETURN_TRUE;
}
} else {
/* Returns true for fake Closure::__invoke */
if (ce == zend_ce_closure
&& zend_string_equals_literal_ci(method_name, ZEND_INVOKE_FUNC_NAME)) {
RETURN_TRUE;
}
}
RETURN_FALSE;
}
/* }}} */
/* {{{ Checks if the object or class has a property */
ZEND_FUNCTION(property_exists)
{
zval *object;
zend_string *property;
zend_class_entry *ce;
zend_property_info *property_info;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "zS", &object, &property) == FAILURE) {
RETURN_THROWS();
}
if (Z_TYPE_P(object) == IS_STRING) {
ce = zend_lookup_class(Z_STR_P(object));
if (!ce) {
RETURN_FALSE;
}
} else if (Z_TYPE_P(object) == IS_OBJECT) {
ce = Z_OBJCE_P(object);
} else {
zend_argument_type_error(1, "must be of type object|string, %s given", zend_zval_type_name(object));
RETURN_THROWS();
}
property_info = zend_hash_find_ptr(&ce->properties_info, property);
if (property_info != NULL
&& (!(property_info->flags & ZEND_ACC_PRIVATE)
|| property_info->ce == ce)) {
RETURN_TRUE;
}
if (Z_TYPE_P(object) == IS_OBJECT &&
Z_OBJ_HANDLER_P(object, has_property)(Z_OBJ_P(object), property, 2, NULL)) {
RETURN_TRUE;
}
RETURN_FALSE;
}
/* }}} */
static inline void class_exists_impl(INTERNAL_FUNCTION_PARAMETERS, int flags, int skip_flags) /* {{{ */
{
zend_string *name;
zend_string *lcname;
zend_class_entry *ce;
bool autoload = 1;
ZEND_PARSE_PARAMETERS_START(1, 2)
Z_PARAM_STR(name)
Z_PARAM_OPTIONAL
Z_PARAM_BOOL(autoload)
ZEND_PARSE_PARAMETERS_END();
if (ZSTR_HAS_CE_CACHE(name)) {
ce = ZSTR_GET_CE_CACHE(name);
if (ce) {
RETURN_BOOL(((ce->ce_flags & flags) == flags) && !(ce->ce_flags & skip_flags));
}
}
if (!autoload) {
if (ZSTR_VAL(name)[0] == '\\') {
/* Ignore leading "\" */
lcname = zend_string_alloc(ZSTR_LEN(name) - 1, 0);
zend_str_tolower_copy(ZSTR_VAL(lcname), ZSTR_VAL(name) + 1, ZSTR_LEN(name) - 1);
} else {
lcname = zend_string_tolower(name);
}
ce = zend_hash_find_ptr(EG(class_table), lcname);
zend_string_release_ex(lcname, 0);
} else {
ce = zend_lookup_class(name);
}
if (ce) {
RETURN_BOOL(((ce->ce_flags & flags) == flags) && !(ce->ce_flags & skip_flags));
} else {
RETURN_FALSE;
}
}
/* {{{ */
/* {{{ Checks if the class exists */
ZEND_FUNCTION(class_exists)
{
class_exists_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, ZEND_ACC_LINKED, ZEND_ACC_INTERFACE | ZEND_ACC_TRAIT);
}
/* }}} */
/* {{{ Checks if the class exists */
ZEND_FUNCTION(interface_exists)
{
class_exists_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, ZEND_ACC_LINKED|ZEND_ACC_INTERFACE, 0);
}
/* }}} */
/* {{{ Checks if the trait exists */
ZEND_FUNCTION(trait_exists)
{
class_exists_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, ZEND_ACC_TRAIT, 0);
}
/* }}} */
ZEND_FUNCTION(enum_exists)
{
class_exists_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, ZEND_ACC_ENUM, 0);
}
/* {{{ Checks if the function exists */
ZEND_FUNCTION(function_exists)
{
zend_string *name;
bool exists;
zend_string *lcname;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_STR(name)
ZEND_PARSE_PARAMETERS_END();
if (ZSTR_VAL(name)[0] == '\\') {
/* Ignore leading "\" */
lcname = zend_string_alloc(ZSTR_LEN(name) - 1, 0);
zend_str_tolower_copy(ZSTR_VAL(lcname), ZSTR_VAL(name) + 1, ZSTR_LEN(name) - 1);
} else {
lcname = zend_string_tolower(name);
}
exists = zend_hash_exists(EG(function_table), lcname);
zend_string_release_ex(lcname, 0);
RETURN_BOOL(exists);
}
/* }}} */
/* {{{ Creates an alias for user defined class */
ZEND_FUNCTION(class_alias)
{
zend_string *class_name;
zend_string *alias_name;
zend_class_entry *ce;
bool autoload = 1;
ZEND_PARSE_PARAMETERS_START(2, 3)
Z_PARAM_STR(class_name)
Z_PARAM_STR(alias_name)
Z_PARAM_OPTIONAL
Z_PARAM_BOOL(autoload)
ZEND_PARSE_PARAMETERS_END();
ce = zend_lookup_class_ex(class_name, NULL, !autoload ? ZEND_FETCH_CLASS_NO_AUTOLOAD : 0);
if (ce) {
if (ce->type == ZEND_USER_CLASS) {
if (zend_register_class_alias_ex(ZSTR_VAL(alias_name), ZSTR_LEN(alias_name), ce, 0) == SUCCESS) {
RETURN_TRUE;
} else {
zend_error(E_WARNING, "Cannot declare %s %s, because the name is already in use", zend_get_object_type(ce), ZSTR_VAL(alias_name));
RETURN_FALSE;
}
} else {
zend_argument_value_error(1, "must be a user-defined class name, internal class name given");
RETURN_THROWS();
}
} else {
zend_error(E_WARNING, "Class \"%s\" not found", ZSTR_VAL(class_name));
RETURN_FALSE;
}
}
/* }}} */
/* {{{ Returns an array with the file names that were include_once()'d */
ZEND_FUNCTION(get_included_files)
{
zend_string *entry;
ZEND_PARSE_PARAMETERS_NONE();
array_init(return_value);
ZEND_HASH_MAP_FOREACH_STR_KEY(&EG(included_files), entry) {
if (entry) {
add_next_index_str(return_value, zend_string_copy(entry));
}
} ZEND_HASH_FOREACH_END();
}
/* }}} */
/* {{{ Generates a user-level error/warning/notice message */
ZEND_FUNCTION(trigger_error)
{
zend_long error_type = E_USER_NOTICE;
zend_string *message;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "S|l", &message, &error_type) == FAILURE) {
RETURN_THROWS();
}
switch (error_type) {
case E_USER_ERROR:
case E_USER_WARNING:
case E_USER_NOTICE:
case E_USER_DEPRECATED:
break;
default:
zend_argument_value_error(2, "must be one of E_USER_ERROR, E_USER_WARNING, E_USER_NOTICE,"
" or E_USER_DEPRECATED");
RETURN_THROWS();
break;
}
zend_error_zstr_at(error_type, zend_get_executed_filename_ex(), zend_get_executed_lineno(), message);
// TODO Change to void
RETURN_TRUE;
}
/* }}} */
/* {{{ Sets a user-defined error handler function. Returns the previously defined error handler, or false on error */
ZEND_FUNCTION(set_error_handler)
{
zend_fcall_info fci;
zend_fcall_info_cache fcc;
zend_long error_type = E_ALL;
ZEND_PARSE_PARAMETERS_START(1, 2)
Z_PARAM_FUNC_OR_NULL(fci, fcc)
Z_PARAM_OPTIONAL
Z_PARAM_LONG(error_type)
ZEND_PARSE_PARAMETERS_END();
if (Z_TYPE(EG(user_error_handler)) != IS_UNDEF) {
ZVAL_COPY(return_value, &EG(user_error_handler));
}
zend_stack_push(&EG(user_error_handlers_error_reporting), &EG(user_error_handler_error_reporting));
zend_stack_push(&EG(user_error_handlers), &EG(user_error_handler));
if (!ZEND_FCI_INITIALIZED(fci)) { /* unset user-defined handler */
ZVAL_UNDEF(&EG(user_error_handler));
return;
}
ZVAL_COPY(&EG(user_error_handler), &(fci.function_name));
EG(user_error_handler_error_reporting) = (int)error_type;
}
/* }}} */
/* {{{ Restores the previously defined error handler function */
ZEND_FUNCTION(restore_error_handler)
{
ZEND_PARSE_PARAMETERS_NONE();
if (Z_TYPE(EG(user_error_handler)) != IS_UNDEF) {
zval zeh;
ZVAL_COPY_VALUE(&zeh, &EG(user_error_handler));
ZVAL_UNDEF(&EG(user_error_handler));
zval_ptr_dtor(&zeh);
}
if (zend_stack_is_empty(&EG(user_error_handlers))) {
ZVAL_UNDEF(&EG(user_error_handler));
} else {
zval *tmp;
EG(user_error_handler_error_reporting) = zend_stack_int_top(&EG(user_error_handlers_error_reporting));
zend_stack_del_top(&EG(user_error_handlers_error_reporting));
tmp = zend_stack_top(&EG(user_error_handlers));
ZVAL_COPY_VALUE(&EG(user_error_handler), tmp);
zend_stack_del_top(&EG(user_error_handlers));
}
// TODO Change to void
RETURN_TRUE;
}
/* }}} */
/* {{{ Sets a user-defined exception handler function. Returns the previously defined exception handler, or false on error */
ZEND_FUNCTION(set_exception_handler)
{
zend_fcall_info fci;
zend_fcall_info_cache fcc;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_FUNC_OR_NULL(fci, fcc)
ZEND_PARSE_PARAMETERS_END();
if (Z_TYPE(EG(user_exception_handler)) != IS_UNDEF) {
ZVAL_COPY(return_value, &EG(user_exception_handler));
}
zend_stack_push(&EG(user_exception_handlers), &EG(user_exception_handler));
if (!ZEND_FCI_INITIALIZED(fci)) { /* unset user-defined handler */
ZVAL_UNDEF(&EG(user_exception_handler));
return;
}
ZVAL_COPY(&EG(user_exception_handler), &(fci.function_name));
}
/* }}} */
/* {{{ Restores the previously defined exception handler function */
ZEND_FUNCTION(restore_exception_handler)
{
ZEND_PARSE_PARAMETERS_NONE();
if (Z_TYPE(EG(user_exception_handler)) != IS_UNDEF) {
zval_ptr_dtor(&EG(user_exception_handler));
}
if (zend_stack_is_empty(&EG(user_exception_handlers))) {
ZVAL_UNDEF(&EG(user_exception_handler));
} else {
zval *tmp = zend_stack_top(&EG(user_exception_handlers));
ZVAL_COPY_VALUE(&EG(user_exception_handler), tmp);
zend_stack_del_top(&EG(user_exception_handlers));
}
// TODO Change to void
RETURN_TRUE;
}
/* }}} */
static inline void get_declared_class_impl(INTERNAL_FUNCTION_PARAMETERS, int flags) /* {{{ */
{
zend_string *key;
zval *zv;
zend_class_entry *ce;
ZEND_PARSE_PARAMETERS_NONE();
array_init(return_value);
zend_hash_real_init_packed(Z_ARRVAL_P(return_value));
ZEND_HASH_FILL_PACKED(Z_ARRVAL_P(return_value)) {
ZEND_HASH_MAP_FOREACH_STR_KEY_VAL(EG(class_table), key, zv) {
ce = Z_PTR_P(zv);
if ((ce->ce_flags & (ZEND_ACC_LINKED|ZEND_ACC_INTERFACE|ZEND_ACC_TRAIT)) == flags
&& key
&& ZSTR_VAL(key)[0] != 0) {
ZEND_HASH_FILL_GROW();
if (EXPECTED(Z_TYPE_P(zv) == IS_PTR)) {
ZEND_HASH_FILL_SET_STR_COPY(ce->name);
} else {
ZEND_ASSERT(Z_TYPE_P(zv) == IS_ALIAS_PTR);
ZEND_HASH_FILL_SET_STR_COPY(key);
}
ZEND_HASH_FILL_NEXT();
}
} ZEND_HASH_FOREACH_END();
} ZEND_HASH_FILL_END();
}
/* {{{ */
/* {{{ Returns an array of all declared traits. */
ZEND_FUNCTION(get_declared_traits)
{
get_declared_class_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, ZEND_ACC_LINKED | ZEND_ACC_TRAIT);
}
/* }}} */
/* {{{ Returns an array of all declared classes. */
ZEND_FUNCTION(get_declared_classes)
{
get_declared_class_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, ZEND_ACC_LINKED);
}
/* }}} */
/* {{{ Returns an array of all declared interfaces. */
ZEND_FUNCTION(get_declared_interfaces)
{
get_declared_class_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, ZEND_ACC_LINKED | ZEND_ACC_INTERFACE);
}
/* }}} */
/* {{{ Returns an array of all defined functions */
ZEND_FUNCTION(get_defined_functions)
{
zval internal, user;
zend_string *key;
zend_function *func;
bool exclude_disabled = 1;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|b", &exclude_disabled) == FAILURE) {
RETURN_THROWS();
}
if (exclude_disabled == 0) {
zend_error(E_DEPRECATED,
"get_defined_functions(): Setting $exclude_disabled to false has no effect");
}
array_init(&internal);
array_init(&user);
array_init(return_value);
ZEND_HASH_MAP_FOREACH_STR_KEY_PTR(EG(function_table), key, func) {
if (key && ZSTR_VAL(key)[0] != 0) {
if (func->type == ZEND_INTERNAL_FUNCTION) {
add_next_index_str(&internal, zend_string_copy(key));
} else if (func->type == ZEND_USER_FUNCTION) {
add_next_index_str(&user, zend_string_copy(key));
}
}
} ZEND_HASH_FOREACH_END();
zend_hash_str_add_new(Z_ARRVAL_P(return_value), "internal", sizeof("internal")-1, &internal);
zend_hash_str_add_new(Z_ARRVAL_P(return_value), "user", sizeof("user")-1, &user);
}
/* }}} */
/* {{{ Returns an associative array of names and values of all currently defined variable names (variables in the current scope) */
ZEND_FUNCTION(get_defined_vars)
{
zend_array *symbol_table;
ZEND_PARSE_PARAMETERS_NONE();
if (zend_forbid_dynamic_call() == FAILURE) {
return;
}
symbol_table = zend_rebuild_symbol_table();
if (UNEXPECTED(symbol_table == NULL)) {
RETURN_EMPTY_ARRAY();
}
RETURN_ARR(zend_array_dup(symbol_table));
}
/* }}} */
#if ZEND_DEBUG && defined(ZTS)
ZEND_FUNCTION(zend_thread_id)
{
ZEND_PARSE_PARAMETERS_NONE();
RETURN_LONG((zend_long)tsrm_thread_id());
}
#endif
/* {{{ Get the resource type name for a given resource */
ZEND_FUNCTION(get_resource_type)
{
const char *resource_type;
zval *z_resource_type;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &z_resource_type) == FAILURE) {
RETURN_THROWS();
}
resource_type = zend_rsrc_list_get_rsrc_type(Z_RES_P(z_resource_type));
if (resource_type) {
RETURN_STRING(resource_type);
} else {
RETURN_STRING("Unknown");
}
}
/* }}} */
/* {{{ Get the resource ID for a given resource */
ZEND_FUNCTION(get_resource_id)
{
zval *resource;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_RESOURCE(resource)
ZEND_PARSE_PARAMETERS_END();
RETURN_LONG(Z_RES_HANDLE_P(resource));
}
/* }}} */
/* {{{ Get an array with all active resources */
ZEND_FUNCTION(get_resources)
{
zend_string *type = NULL;
zend_string *key;
zend_ulong index;
zval *val;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|S!", &type) == FAILURE) {
RETURN_THROWS();
}
if (!type) {
array_init(return_value);
ZEND_HASH_FOREACH_KEY_VAL(&EG(regular_list), index, key, val) {
if (!key) {
Z_ADDREF_P(val);
zend_hash_index_add_new(Z_ARRVAL_P(return_value), index, val);
}
} ZEND_HASH_FOREACH_END();
} else if (zend_string_equals_literal(type, "Unknown")) {
array_init(return_value);
ZEND_HASH_FOREACH_KEY_VAL(&EG(regular_list), index, key, val) {
if (!key && Z_RES_TYPE_P(val) <= 0) {
Z_ADDREF_P(val);
zend_hash_index_add_new(Z_ARRVAL_P(return_value), index, val);
}
} ZEND_HASH_FOREACH_END();
} else {
int id = zend_fetch_list_dtor_id(ZSTR_VAL(type));
if (id <= 0) {
zend_argument_value_error(1, "must be a valid resource type");
RETURN_THROWS();
}
array_init(return_value);
ZEND_HASH_FOREACH_KEY_VAL(&EG(regular_list), index, key, val) {
if (!key && Z_RES_TYPE_P(val) == id) {
Z_ADDREF_P(val);
zend_hash_index_add_new(Z_ARRVAL_P(return_value), index, val);
}
} ZEND_HASH_FOREACH_END();
}
}
/* }}} */
static void add_zendext_info(zend_extension *ext, void *arg) /* {{{ */
{
zval *name_array = (zval *)arg;
add_next_index_string(name_array, ext->name);
}
/* }}} */
/* {{{ Return an array containing names of loaded extensions */
ZEND_FUNCTION(get_loaded_extensions)
{
bool zendext = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|b", &zendext) == FAILURE) {
RETURN_THROWS();
}
array_init(return_value);
if (zendext) {
zend_llist_apply_with_argument(&zend_extensions, (llist_apply_with_arg_func_t) add_zendext_info, return_value);
} else {
zend_module_entry *module;
ZEND_HASH_MAP_FOREACH_PTR(&module_registry, module) {
add_next_index_string(return_value, module->name);
} ZEND_HASH_FOREACH_END();
}
}
/* }}} */
/* {{{ Return an array containing the names and values of all defined constants */
ZEND_FUNCTION(get_defined_constants)
{
bool categorize = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|b", &categorize) == FAILURE) {
RETURN_THROWS();
}
array_init(return_value);
if (categorize) {
zend_constant *val;
int module_number;
zval *modules, const_val;
char **module_names;
zend_module_entry *module;
int i = 1;
modules = ecalloc(zend_hash_num_elements(&module_registry) + 2, sizeof(zval));
module_names = emalloc((zend_hash_num_elements(&module_registry) + 2) * sizeof(char *));
module_names[0] = "internal";
ZEND_HASH_MAP_FOREACH_PTR(&module_registry, module) {
module_names[module->module_number] = (char *)module->name;
i++;
} ZEND_HASH_FOREACH_END();
module_names[i] = "user";
ZEND_HASH_MAP_FOREACH_PTR(EG(zend_constants), val) {
if (!val->name) {
/* skip special constants */
continue;
}
if (ZEND_CONSTANT_MODULE_NUMBER(val) == PHP_USER_CONSTANT) {
module_number = i;
} else if (ZEND_CONSTANT_MODULE_NUMBER(val) > i) {
/* should not happen */
continue;
} else {
module_number = ZEND_CONSTANT_MODULE_NUMBER(val);
}
if (Z_TYPE(modules[module_number]) == IS_UNDEF) {
array_init(&modules[module_number]);
add_assoc_zval(return_value, module_names[module_number], &modules[module_number]);
}
ZVAL_COPY_OR_DUP(&const_val, &val->value);
zend_hash_add_new(Z_ARRVAL(modules[module_number]), val->name, &const_val);
} ZEND_HASH_FOREACH_END();
efree(module_names);
efree(modules);
} else {
zend_constant *constant;
zval const_val;
ZEND_HASH_MAP_FOREACH_PTR(EG(zend_constants), constant) {
if (!constant->name) {
/* skip special constants */
continue;
}
ZVAL_COPY_OR_DUP(&const_val, &constant->value);
zend_hash_add_new(Z_ARRVAL_P(return_value), constant->name, &const_val);
} ZEND_HASH_FOREACH_END();
}
}
/* }}} */
static void debug_backtrace_get_args(zend_execute_data *call, zval *arg_array) /* {{{ */
{
uint32_t num_args = ZEND_CALL_NUM_ARGS(call);
if (num_args) {
uint32_t i = 0;
zval *p = ZEND_CALL_ARG(call, 1);
array_init_size(arg_array, num_args);
zend_hash_real_init_packed(Z_ARRVAL_P(arg_array));
ZEND_HASH_FILL_PACKED(Z_ARRVAL_P(arg_array)) {
if (call->func->type == ZEND_USER_FUNCTION) {
uint32_t first_extra_arg = MIN(num_args, call->func->op_array.num_args);
if (UNEXPECTED(ZEND_CALL_INFO(call) & ZEND_CALL_HAS_SYMBOL_TABLE)) {
/* In case of attached symbol_table, values on stack may be invalid
* and we have to access them through symbol_table
* See: https://bugs.php.net/bug.php?id=73156
*/
while (i < first_extra_arg) {
zend_string *arg_name = call->func->op_array.vars[i];
zval original_arg;
zval *arg = zend_hash_find_ex_ind(call->symbol_table, arg_name, 1);
zend_attribute *attribute = zend_get_parameter_attribute_str(
call->func->common.attributes,
"sensitiveparameter",
sizeof("sensitiveparameter") - 1,
i
);
bool is_sensitive = attribute != NULL;
if (arg) {
ZVAL_DEREF(arg);
ZVAL_COPY_VALUE(&original_arg, arg);
} else {
ZVAL_NULL(&original_arg);
}
if (is_sensitive) {
zval redacted_arg;
object_init_ex(&redacted_arg, zend_ce_sensitive_parameter_value);
zend_call_method_with_1_params(Z_OBJ_P(&redacted_arg), zend_ce_sensitive_parameter_value, &zend_ce_sensitive_parameter_value->constructor, "__construct", NULL, &original_arg);
ZEND_HASH_FILL_SET(&redacted_arg);
} else {
Z_TRY_ADDREF_P(&original_arg);
ZEND_HASH_FILL_SET(&original_arg);
}
ZEND_HASH_FILL_NEXT();
i++;
}
} else {
while (i < first_extra_arg) {
zval original_arg;
zend_attribute *attribute = zend_get_parameter_attribute_str(
call->func->common.attributes,
"sensitiveparameter",
sizeof("sensitiveparameter") - 1,
i
);
bool is_sensitive = attribute != NULL;
if (EXPECTED(Z_TYPE_INFO_P(p) != IS_UNDEF)) {
zval *arg = p;
ZVAL_DEREF(arg);
ZVAL_COPY_VALUE(&original_arg, arg);
} else {
ZVAL_NULL(&original_arg);
}
if (is_sensitive) {
zval redacted_arg;
object_init_ex(&redacted_arg, zend_ce_sensitive_parameter_value);
zend_call_method_with_1_params(Z_OBJ_P(&redacted_arg), zend_ce_sensitive_parameter_value, &zend_ce_sensitive_parameter_value->constructor, "__construct", NULL, &original_arg);
ZEND_HASH_FILL_SET(&redacted_arg);
} else {
Z_TRY_ADDREF_P(&original_arg);
ZEND_HASH_FILL_SET(&original_arg);
}
ZEND_HASH_FILL_NEXT();
p++;
i++;
}
}
p = ZEND_CALL_VAR_NUM(call, call->func->op_array.last_var + call->func->op_array.T);
}
while (i < num_args) {
zval original_arg;
bool is_sensitive = 0;
if (i < call->func->common.num_args || call->func->common.fn_flags & ZEND_ACC_VARIADIC) {
zend_attribute *attribute = zend_get_parameter_attribute_str(
call->func->common.attributes,
"sensitiveparameter",
sizeof("sensitiveparameter") - 1,
MIN(i, call->func->common.num_args)
);
is_sensitive = attribute != NULL;
}
if (EXPECTED(Z_TYPE_INFO_P(p) != IS_UNDEF)) {
zval *arg = p;
ZVAL_DEREF(arg);
ZVAL_COPY_VALUE(&original_arg, arg);
} else {
ZVAL_NULL(&original_arg);
}
if (is_sensitive) {
zval redacted_arg;
object_init_ex(&redacted_arg, zend_ce_sensitive_parameter_value);
zend_call_method_with_1_params(Z_OBJ_P(&redacted_arg), zend_ce_sensitive_parameter_value, &zend_ce_sensitive_parameter_value->constructor, "__construct", NULL, &original_arg);
ZEND_HASH_FILL_SET(&redacted_arg);
} else {
Z_TRY_ADDREF_P(&original_arg);
ZEND_HASH_FILL_SET(&original_arg);
}
ZEND_HASH_FILL_NEXT();
p++;
i++;
}
} ZEND_HASH_FILL_END();
Z_ARRVAL_P(arg_array)->nNumOfElements = num_args;
} else {
ZVAL_EMPTY_ARRAY(arg_array);
}
if (ZEND_CALL_INFO(call) & ZEND_CALL_HAS_EXTRA_NAMED_PARAMS) {
zend_string *name;
zval *arg;
SEPARATE_ARRAY(arg_array);
ZEND_HASH_MAP_FOREACH_STR_KEY_VAL(call->extra_named_params, name, arg) {
ZVAL_DEREF(arg);
Z_TRY_ADDREF_P(arg);
zend_hash_add_new(Z_ARRVAL_P(arg_array), name, arg);
} ZEND_HASH_FOREACH_END();
}
}
/* }}} */
/* {{{ */
ZEND_FUNCTION(debug_print_backtrace)
{
zend_long options = 0;
zend_long limit = 0;
zval backtrace;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|ll", &options, &limit) == FAILURE) {
RETURN_THROWS();
}
zend_fetch_debug_backtrace(&backtrace, 1, options, limit);
ZEND_ASSERT(Z_TYPE(backtrace) == IS_ARRAY);
zend_string *str = zend_trace_to_string(Z_ARRVAL(backtrace), /* include_main */ false);
ZEND_WRITE(ZSTR_VAL(str), ZSTR_LEN(str));
zend_string_release(str);
zval_ptr_dtor(&backtrace);
}
/* }}} */
ZEND_API void zend_fetch_debug_backtrace(zval *return_value, int skip_last, int options, int limit) /* {{{ */
{
zend_execute_data *call;
zend_object *object;
bool fake_frame = 0;
int lineno, frameno = 0;
zend_function *func;
zend_string *filename;
zend_string *include_filename = NULL;
zval tmp;
HashTable *stack_frame;
array_init(return_value);
call = EG(current_execute_data);
if (!call) {
return;
}
if (skip_last) {
/* skip debug_backtrace() */
call = call->prev_execute_data;
}
while (call && (limit == 0 || frameno < limit)) {
if (UNEXPECTED(!call->func)) {
/* This is the fake frame inserted for nested generators. Normally,
* this frame is preceded by the actual generator frame and then
* replaced by zend_generator_check_placeholder_frame() below.
* However, the frame is popped before cleaning the stack frame,
* which is observable by destructors. */
call = zend_generator_check_placeholder_frame(call);
ZEND_ASSERT(call->func);
}
zend_execute_data *prev = call->prev_execute_data;
if (!prev) {
/* add frame for a handler call without {main} code */
if (EXPECTED((ZEND_CALL_INFO(call) & ZEND_CALL_TOP_FUNCTION) == 0)) {
break;
}
} else if (UNEXPECTED((ZEND_CALL_INFO(call) & ZEND_CALL_GENERATOR) != 0)) {
prev = zend_generator_check_placeholder_frame(prev);
}
frameno++;
/* We use _zend_hash_append*() and the array must be preallocated */
stack_frame = zend_new_array(8);
zend_hash_real_init_mixed(stack_frame);
if (prev && prev->func && ZEND_USER_CODE(prev->func->common.type)) {
filename = prev->func->op_array.filename;
if (prev->opline->opcode == ZEND_HANDLE_EXCEPTION) {
if (EG(opline_before_exception)) {
lineno = EG(opline_before_exception)->lineno;
} else {
lineno = prev->func->op_array.line_end;
}
} else {
lineno = prev->opline->lineno;
}
ZVAL_STR_COPY(&tmp, filename);
_zend_hash_append_ex(stack_frame, ZSTR_KNOWN(ZEND_STR_FILE), &tmp, 1);
ZVAL_LONG(&tmp, lineno);
_zend_hash_append_ex(stack_frame, ZSTR_KNOWN(ZEND_STR_LINE), &tmp, 1);
/* try to fetch args only if an FCALL was just made - elsewise we're in the middle of a function
* and debug_backtrace() might have been called by the error_handler. in this case we don't
* want to pop anything of the argument-stack */
} else {
zend_execute_data *prev_call = prev;
while (prev_call) {
zend_execute_data *prev;
if (prev_call &&
prev_call->func &&
!ZEND_USER_CODE(prev_call->func->common.type) &&
!(prev_call->func->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE)) {
break;
}
prev = prev_call->prev_execute_data;
if (prev && prev->func && ZEND_USER_CODE(prev->func->common.type)) {
ZVAL_STR_COPY(&tmp, prev->func->op_array.filename);
_zend_hash_append_ex(stack_frame, ZSTR_KNOWN(ZEND_STR_FILE), &tmp, 1);
ZVAL_LONG(&tmp, prev->opline->lineno);
_zend_hash_append_ex(stack_frame, ZSTR_KNOWN(ZEND_STR_LINE), &tmp, 1);
break;
}
prev_call = prev;
}
filename = NULL;
}
func = call->func;
if (!fake_frame && func->common.function_name) {
ZVAL_STR_COPY(&tmp, func->common.function_name);
_zend_hash_append_ex(stack_frame, ZSTR_KNOWN(ZEND_STR_FUNCTION), &tmp, 1);
if (Z_TYPE(call->This) == IS_OBJECT) {
object = Z_OBJ(call->This);
/* $this may be passed into regular internal functions */
if (func->common.scope) {
ZVAL_STR_COPY(&tmp, func->common.scope->name);
} else if (object->handlers->get_class_name == zend_std_get_class_name) {
ZVAL_STR_COPY(&tmp, object->ce->name);
} else {
ZVAL_STR(&tmp, object->handlers->get_class_name(object));
}
_zend_hash_append_ex(stack_frame, ZSTR_KNOWN(ZEND_STR_CLASS), &tmp, 1);
if ((options & DEBUG_BACKTRACE_PROVIDE_OBJECT) != 0) {
ZVAL_OBJ_COPY(&tmp, object);
_zend_hash_append_ex(stack_frame, ZSTR_KNOWN(ZEND_STR_OBJECT), &tmp, 1);
}
ZVAL_INTERNED_STR(&tmp, ZSTR_KNOWN(ZEND_STR_OBJECT_OPERATOR));
_zend_hash_append_ex(stack_frame, ZSTR_KNOWN(ZEND_STR_TYPE), &tmp, 1);
} else if (func->common.scope) {
ZVAL_STR_COPY(&tmp, func->common.scope->name);
_zend_hash_append_ex(stack_frame, ZSTR_KNOWN(ZEND_STR_CLASS), &tmp, 1);
ZVAL_INTERNED_STR(&tmp, ZSTR_KNOWN(ZEND_STR_PAAMAYIM_NEKUDOTAYIM));
_zend_hash_append_ex(stack_frame, ZSTR_KNOWN(ZEND_STR_TYPE), &tmp, 1);
}
if ((options & DEBUG_BACKTRACE_IGNORE_ARGS) == 0 &&
func->type != ZEND_EVAL_CODE) {
debug_backtrace_get_args(call, &tmp);
_zend_hash_append_ex(stack_frame, ZSTR_KNOWN(ZEND_STR_ARGS), &tmp, 1);
}
} else {
/* i know this is kinda ugly, but i'm trying to avoid extra cycles in the main execution loop */
bool build_filename_arg = 1;
zend_string *pseudo_function_name;
uint32_t include_kind = 0;
if (prev && prev->func && ZEND_USER_CODE(prev->func->common.type) && prev->opline->opcode == ZEND_INCLUDE_OR_EVAL) {
include_kind = prev->opline->extended_value;
}
switch (include_kind) {
case ZEND_EVAL:
pseudo_function_name = ZSTR_KNOWN(ZEND_STR_EVAL);
build_filename_arg = 0;
break;
case ZEND_INCLUDE:
pseudo_function_name = ZSTR_KNOWN(ZEND_STR_INCLUDE);
break;
case ZEND_REQUIRE:
pseudo_function_name = ZSTR_KNOWN(ZEND_STR_REQUIRE);
break;
case ZEND_INCLUDE_ONCE:
pseudo_function_name = ZSTR_KNOWN(ZEND_STR_INCLUDE_ONCE);
break;
case ZEND_REQUIRE_ONCE:
pseudo_function_name = ZSTR_KNOWN(ZEND_STR_REQUIRE_ONCE);
break;
default:
/* Skip dummy frame unless it is needed to preserve filename/lineno info. */
if (!filename) {
zend_array_destroy(stack_frame);
goto skip_frame;
}
pseudo_function_name = ZSTR_KNOWN(ZEND_STR_UNKNOWN);
build_filename_arg = 0;
break;
}
if (build_filename_arg && include_filename) {
zval arg_array;
array_init(&arg_array);
/* include_filename always points to the last filename of the last last called-function.
if we have called include in the frame above - this is the file we have included.
*/
ZVAL_STR_COPY(&tmp, include_filename);
zend_hash_next_index_insert_new(Z_ARRVAL(arg_array), &tmp);
_zend_hash_append_ex(stack_frame, ZSTR_KNOWN(ZEND_STR_ARGS), &arg_array, 1);
}
ZVAL_INTERNED_STR(&tmp, pseudo_function_name);
_zend_hash_append_ex(stack_frame, ZSTR_KNOWN(ZEND_STR_FUNCTION), &tmp, 1);
}
ZVAL_ARR(&tmp, stack_frame);
zend_hash_next_index_insert_new(Z_ARRVAL_P(return_value), &tmp);
skip_frame:
if (UNEXPECTED(ZEND_CALL_KIND(call) == ZEND_CALL_TOP_FUNCTION)
&& !fake_frame
&& prev
&& prev->func
&& ZEND_USER_CODE(prev->func->common.type)
&& prev->opline->opcode == ZEND_INCLUDE_OR_EVAL) {
fake_frame = 1;
} else {
fake_frame = 0;
include_filename = filename;
call = prev;
}
}
}
/* }}} */
/* {{{ Return backtrace as array */
ZEND_FUNCTION(debug_backtrace)
{
zend_long options = DEBUG_BACKTRACE_PROVIDE_OBJECT;
zend_long limit = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|ll", &options, &limit) == FAILURE) {
RETURN_THROWS();
}
zend_fetch_debug_backtrace(return_value, 1, options, limit);
}
/* }}} */
/* {{{ Returns true if the named extension is loaded */
ZEND_FUNCTION(extension_loaded)
{
zend_string *extension_name;
zend_string *lcname;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "S", &extension_name) == FAILURE) {
RETURN_THROWS();
}
lcname = zend_string_tolower(extension_name);
if (zend_hash_exists(&module_registry, lcname)) {
RETVAL_TRUE;
} else {
RETVAL_FALSE;
}
zend_string_release_ex(lcname, 0);
}
/* }}} */
/* {{{ Returns an array with the names of functions belonging to the named extension */
ZEND_FUNCTION(get_extension_funcs)
{
zend_string *extension_name;
zend_string *lcname;
bool array;
zend_module_entry *module;
zend_function *zif;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "S", &extension_name) == FAILURE) {
RETURN_THROWS();
}
if (strncasecmp(ZSTR_VAL(extension_name), "zend", sizeof("zend"))) {
lcname = zend_string_tolower(extension_name);
module = zend_hash_find_ptr(&module_registry, lcname);
zend_string_release_ex(lcname, 0);
} else {
module = zend_hash_str_find_ptr(&module_registry, "core", sizeof("core") - 1);
}
if (!module) {
RETURN_FALSE;
}
if (module->functions) {
/* avoid BC break, if functions list is empty, will return an empty array */
array_init(return_value);
array = 1;
} else {
array = 0;
}
ZEND_HASH_MAP_FOREACH_PTR(CG(function_table), zif) {
if (zif->common.type == ZEND_INTERNAL_FUNCTION
&& zif->internal_function.module == module) {
if (!array) {
array_init(return_value);
array = 1;
}
add_next_index_str(return_value, zend_string_copy(zif->common.function_name));
}
} ZEND_HASH_FOREACH_END();
if (!array) {
RETURN_FALSE;
}
}
/* }}} */