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php-src/Zend/zend_builtin_functions.c
Derick Rethans 52bd901eb4 - Fix for defines...
2002-09-28 19:02:21 +00:00

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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2002 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 at through the world-wide-web at |
| 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> |
+----------------------------------------------------------------------+
*/
#include "zend.h"
#include "zend_API.h"
#include "zend_builtin_functions.h"
#include "zend_constants.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_NAMED_FUNCTION(zend_if_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_parent_class);
static ZEND_FUNCTION(method_exists);
static ZEND_FUNCTION(class_exists);
static ZEND_FUNCTION(function_exists);
static ZEND_FUNCTION(leak);
#ifdef ZEND_TEST_EXCEPTIONS
static ZEND_FUNCTION(crash);
#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_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);
#if ZEND_DEBUG
static ZEND_FUNCTION(zend_test_func);
#ifdef ZTS
static ZEND_FUNCTION(zend_thread_id);
#endif
#endif
ZEND_API unsigned char first_arg_force_ref[] = { 1, BYREF_FORCE };
ZEND_API unsigned char second_arg_force_ref[] = { 2, BYREF_NONE, BYREF_FORCE };
ZEND_API unsigned char third_arg_force_ref[] = { 3, BYREF_NONE, BYREF_NONE, BYREF_FORCE };
static zend_function_entry builtin_functions[] = {
ZEND_FE(zend_version, NULL)
ZEND_FE(func_num_args, NULL)
ZEND_FE(func_get_arg, NULL)
ZEND_FE(func_get_args, NULL)
{ "strlen", zend_if_strlen, NULL },
ZEND_FE(strcmp, NULL)
ZEND_FE(strncmp, NULL)
ZEND_FE(strcasecmp, NULL)
ZEND_FE(strncasecmp, NULL)
ZEND_FE(each, first_arg_force_ref)
ZEND_FE(error_reporting, NULL)
ZEND_FE(define, NULL)
ZEND_FE(defined, NULL)
ZEND_FE(get_class, NULL)
ZEND_FE(get_parent_class, NULL)
ZEND_FE(method_exists, NULL)
ZEND_FE(class_exists, NULL)
ZEND_FE(function_exists, NULL)
ZEND_FE(leak, NULL)
#ifdef ZEND_TEST_EXCEPTIONS
ZEND_FE(crash, NULL)
#endif
ZEND_FE(get_included_files, NULL)
ZEND_FALIAS(get_required_files, get_included_files, NULL)
ZEND_FE(is_subclass_of, NULL)
ZEND_FE(is_a, NULL)
ZEND_FE(get_class_vars, NULL)
ZEND_FE(get_object_vars, NULL)
ZEND_FE(get_class_methods, NULL)
ZEND_FE(trigger_error, NULL)
ZEND_FALIAS(user_error, trigger_error, NULL)
ZEND_FE(set_error_handler, NULL)
ZEND_FE(restore_error_handler, NULL)
ZEND_FE(set_exception_handler, NULL)
ZEND_FE(restore_exception_handler, NULL)
ZEND_FE(get_declared_classes, NULL)
ZEND_FE(get_defined_functions, NULL)
ZEND_FE(get_defined_vars, NULL)
ZEND_FE(create_function, NULL)
ZEND_FE(get_resource_type, NULL)
ZEND_FE(get_loaded_extensions, NULL)
ZEND_FE(extension_loaded, NULL)
ZEND_FE(get_extension_funcs, NULL)
ZEND_FE(get_defined_constants, NULL)
ZEND_FE(debug_backtrace, NULL)
#if ZEND_DEBUG
ZEND_FE(zend_test_func, NULL)
#ifdef ZTS
ZEND_FE(zend_thread_id, NULL)
#endif
#endif
{ NULL, NULL, NULL }
};
int zend_startup_builtin_functions(TSRMLS_D)
{
return zend_register_functions(builtin_functions, NULL, MODULE_PERSISTENT TSRMLS_CC);
}
/* {{{ 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 func_num_args(void)
Get the number of arguments that were passed to the function */
ZEND_FUNCTION(func_num_args)
{
void **p;
int arg_count;
p = EG(argument_stack).top_element-1-1;
arg_count = (ulong) *p; /* this is the amount of arguments passed to func_num_args(); */
p -= 1+arg_count;
if (*p) {
zend_error(E_ERROR, "func_num_args(): Can't be used as a function parameter");
}
--p;
if (p>=EG(argument_stack).elements) {
RETURN_LONG((ulong) *p);
} 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 **z_requested_offset;
zval *arg;
long requested_offset;
if (ZEND_NUM_ARGS()!=1 || zend_get_parameters_ex(1, &z_requested_offset)==FAILURE) {
RETURN_FALSE;
}
convert_to_long_ex(z_requested_offset);
requested_offset = (*z_requested_offset)->value.lval;
if (requested_offset < 0) {
zend_error(E_WARNING, "func_get_arg(): The argument number should be >= 0");
RETURN_FALSE;
}
p = EG(argument_stack).top_element-1-1;
arg_count = (ulong) *p; /* this is the amount of arguments passed to func_get_arg(); */
p -= 1+arg_count;
if (*p) {
zend_error(E_ERROR, "func_get_arg(): Can't be used as a function parameter");
}
--p;
if (p<EG(argument_stack).elements) {
zend_error(E_WARNING, "func_get_arg(): Called from the global scope - no function context");
RETURN_FALSE;
}
arg_count = (ulong) *p;
if (requested_offset>=arg_count) {
zend_error(E_WARNING, "func_get_arg(): Argument %d not passed to function", requested_offset);
RETURN_FALSE;
}
arg = *(p-(arg_count-requested_offset));
*return_value = *arg;
zval_copy_ctor(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;
p = EG(argument_stack).top_element-1-1;
arg_count = (ulong) *p; /* this is the amount of arguments passed to func_get_args(); */
p -= 1+arg_count;
if (*p) {
zend_error(E_ERROR, "func_get_args(): Can't be used as a function parameter");
}
--p;
if (p<EG(argument_stack).elements) {
zend_error(E_WARNING, "func_get_args(): Called from the global scope - no function context");
RETURN_FALSE;
}
arg_count = (ulong) *p;
array_init(return_value);
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_NAMED_FUNCTION(zend_if_strlen)
{
zval **str;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &str) == FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
convert_to_string_ex(str);
RETVAL_LONG((*str)->value.str.len);
}
/* }}} */
/* {{{ proto int strcmp(string str1, string str2)
Binary safe string comparison */
ZEND_FUNCTION(strcmp)
{
zval **s1, **s2;
if (ZEND_NUM_ARGS() != 2 || zend_get_parameters_ex(2, &s1, &s2) == FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
convert_to_string_ex(s1);
convert_to_string_ex(s2);
RETURN_LONG(zend_binary_zval_strcmp(*s1, *s2));
}
/* }}} */
/* {{{ proto int strncmp(string str1, string str2, int len)
Binary safe string comparison */
ZEND_FUNCTION(strncmp)
{
zval **s1, **s2, **s3;
if (ZEND_NUM_ARGS() != 3 || zend_get_parameters_ex(3, &s1, &s2, &s3) == FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
convert_to_string_ex(s1);
convert_to_string_ex(s2);
convert_to_long_ex(s3);
RETURN_LONG(zend_binary_zval_strncmp(*s1, *s2, *s3));
}
/* }}} */
/* {{{ proto int strcasecmp(string str1, string str2)
Binary safe case-insensitive string comparison */
ZEND_FUNCTION(strcasecmp)
{
zval **s1, **s2;
if (ZEND_NUM_ARGS()!=2 || zend_get_parameters_ex(2, &s1, &s2) == FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
convert_to_string_ex(s1);
convert_to_string_ex(s2);
RETURN_LONG(zend_binary_zval_strcasecmp(*s1, *s2));
}
/* }}} */
/* {{{ proto int strncasecmp(string str1, string str2, int len)
Binary safe string comparison */
ZEND_FUNCTION(strncasecmp)
{
zval **s1, **s2, **s3;
if (ZEND_NUM_ARGS() != 3 || zend_get_parameters_ex(3, &s1, &s2, &s3) == FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
convert_to_string_ex(s1);
convert_to_string_ex(s2);
convert_to_long_ex(s3);
RETURN_LONG(zend_binary_zval_strncasecmp(*s1, *s2, *s3));
}
/* }}} */
/* {{{ 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;
ulong num_key;
zval **inserted_pointer;
HashTable *target_hash;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &array) == FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
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 (entry->is_ref) {
ALLOC_ZVAL(tmp);
*tmp = *entry;
zval_copy_ctor(tmp);
tmp->is_ref=0;
tmp->refcount=0;
entry=tmp;
}
zend_hash_index_update(return_value->value.ht, 1, &entry, sizeof(zval *), NULL);
entry->refcount++;
zend_hash_update(return_value->value.ht, "value", sizeof("value"), &entry, sizeof(zval *), NULL);
entry->refcount++;
/* add the key elements */
switch (zend_hash_get_current_key(target_hash, &string_key, &num_key, 1)) {
case HASH_KEY_IS_STRING:
add_get_index_string(return_value, 0, string_key, (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);
(*inserted_pointer)->refcount++;
zend_hash_move_forward(target_hash);
}
/* }}} */
/* {{{ proto int error_reporting(int new_error_level=null)
Return the current error_reporting level, and if an argument was passed - change to the new level */
ZEND_FUNCTION(error_reporting)
{
zval **arg;
int old_error_reporting;
old_error_reporting = EG(error_reporting);
switch (ZEND_NUM_ARGS()) {
case 0:
break;
case 1:
if (zend_get_parameters_ex(1, &arg) == FAILURE) {
RETURN_FALSE;
}
convert_to_long_ex(arg);
EG(error_reporting)=(*arg)->value.lval;
break;
default:
ZEND_WRONG_PARAM_COUNT();
break;
}
RETVAL_LONG(old_error_reporting);
}
/* }}} */
/* {{{ proto bool define(string constant_name, mixed value, case_sensitive=true)
Define a new constant */
ZEND_FUNCTION(define)
{
zval **var, **val, **non_cs;
int case_sensitive;
zend_constant c;
switch(ZEND_NUM_ARGS()) {
case 2:
if (zend_get_parameters_ex(2, &var, &val)==FAILURE) {
RETURN_FALSE;
}
case_sensitive = CONST_CS;
break;
case 3:
if (zend_get_parameters_ex(3, &var, &val, &non_cs)==FAILURE) {
RETURN_FALSE;
}
convert_to_long_ex(non_cs);
if ((*non_cs)->value.lval) {
case_sensitive = 0;
} else {
case_sensitive = CONST_CS;
}
break;
default:
ZEND_WRONG_PARAM_COUNT();
break;
}
switch((*val)->type) {
case IS_LONG:
case IS_DOUBLE:
case IS_STRING:
case IS_BOOL:
case IS_RESOURCE:
case IS_NULL:
break;
default:
zend_error(E_WARNING,"Constants may only evaluate to scalar values");
RETURN_FALSE;
break;
}
convert_to_string_ex(var);
c.value = **val;
zval_copy_ctor(&c.value);
c.flags = case_sensitive; /* non persistent */
c.name = zend_strndup((*var)->value.str.val, (*var)->value.str.len);
c.name_len = (*var)->value.str.len+1;
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)
{
zval **var;
zval c;
if (ZEND_NUM_ARGS()!=1 || zend_get_parameters_ex(1, &var)==FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
convert_to_string_ex(var);
if (zend_get_constant((*var)->value.str.val, (*var)->value.str.len, &c TSRMLS_CC)) {
zval_dtor(&c);
RETURN_LONG(1);
} else {
RETURN_LONG(0);
}
}
/* }}} */
/* {{{ proto string get_class(object object)
Retrieves the class name */
ZEND_FUNCTION(get_class)
{
zval **arg;
char *name;
zend_uint name_len;
if (ZEND_NUM_ARGS()!=1 || zend_get_parameters_ex(1, &arg)==FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
if (Z_TYPE_PP(arg) != IS_OBJECT) {
RETURN_FALSE;
}
if (Z_OBJ_HT_PP(arg)->get_class_name == NULL ||
Z_OBJ_HT_PP(arg)->get_class_name(*arg, &name, &name_len, 0 TSRMLS_CC) != SUCCESS) {
zend_class_entry *ce;
ce = zend_get_class_entry(*arg);
if (!ce) {
RETURN_FALSE;
}
name = ce->name;
name_len = ce->name_length;
}
RETURN_STRINGL(name, name_len, 1);
}
/* }}} */
/* {{{ proto string get_parent_class(mixed object)
Retrieves the parent class name for object or class. */
ZEND_FUNCTION(get_parent_class)
{
zval **arg;
zend_class_entry *ce = NULL;
if (ZEND_NUM_ARGS()!=1 || zend_get_parameters_ex(1, &arg)==FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
if (Z_TYPE_PP(arg) == IS_OBJECT) {
char *name;
zend_uint name_length;
/* first try asking handler for parent class name */
if (Z_OBJ_HT_PP(arg)->get_class_name != NULL &&
Z_OBJ_HT_PP(arg)->get_class_name(*arg, &name, &name_length, 1 TSRMLS_CC) == SUCCESS) {
name = ce->name;
name_length = ce->name_length;
RETURN_STRINGL(name, name_length, 1);
}
/* then try getting the class entry
if successfull, will fall through to standard ce handling */
if (!Z_OBJ_HT_PP(arg)->get_class_entry || !(ce = zend_get_class_entry(*arg))) {
RETURN_FALSE;
}
} else if (Z_TYPE_PP(arg) == IS_STRING) {
zend_class_entry **pce;
SEPARATE_ZVAL(arg);
zend_str_tolower_nlc(Z_STRVAL_PP(arg), Z_STRLEN_PP(arg));
if (zend_lookup_class(Z_STRVAL_PP(arg), Z_STRLEN_PP(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, **class_name;
char *lcname;
zend_class_entry *ce = NULL;
if (ZEND_NUM_ARGS() != 2 || zend_get_parameters_ex(2, &obj, &class_name)==FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
if (Z_TYPE_PP(obj) != IS_OBJECT) {
RETURN_FALSE;
}
/* TBI!! new object handlers */
if (!HAS_CLASS_ENTRY(**obj)) {
RETURN_FALSE;
}
convert_to_string_ex(class_name);
lcname = estrndup(Z_STRVAL_PP(class_name), Z_STRLEN_PP(class_name));
zend_str_tolower_nlc(lcname, Z_STRLEN_PP(class_name));
if (only_subclass)
ce = Z_OBJCE_PP(obj)->parent;
else
ce = Z_OBJCE_PP(obj);
for (; ce != NULL; ce = ce->parent) {
if ((ce->name_length == Z_STRLEN_PP(class_name)) && !memcmp(ce->name, lcname, ce->name_length)) {
efree(lcname);
RETURN_TRUE;
}
}
efree(lcname);
RETURN_FALSE;
}
/* {{{ 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);
}
/* }}} */
/* {{{ proto array get_class_vars(string class_name)
Returns an array of default properties of the class */
ZEND_FUNCTION(get_class_vars)
{
zval **class_name;
char *lcname;
zend_class_entry *ce, **pce;
zval *tmp;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &class_name)==FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
convert_to_string_ex(class_name);
lcname = estrndup((*class_name)->value.str.val, (*class_name)->value.str.len);
zend_str_tolower_nlc(lcname, (*class_name)->value.str.len);
if (zend_lookup_class(lcname, Z_STRLEN_PP(class_name), &pce TSRMLS_CC) == FAILURE) {
efree(lcname);
RETURN_FALSE;
} else {
ce = *pce;
efree(lcname);
array_init(return_value);
if (!ce->constants_updated) {
zend_hash_apply_with_argument(&ce->default_properties, (apply_func_arg_t) zval_update_constant, (void *) 1 TSRMLS_CC);
ce->constants_updated = 1;
}
zend_hash_copy(return_value->value.ht, &ce->default_properties, (copy_ctor_func_t) zval_add_ref, (void *) &tmp, sizeof(zval *));
}
}
/* }}} */
/* {{{ proto array get_object_vars(object obj)
Returns an array of object properties */
ZEND_FUNCTION(get_object_vars)
{
zval **obj;
zval *tmp;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &obj) == FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
if ((*obj)->type != IS_OBJECT) {
RETURN_FALSE;
}
if (Z_OBJ_HT_PP(obj)->get_properties == NULL) {
RETURN_FALSE;
}
array_init(return_value);
zend_hash_copy(return_value->value.ht, Z_OBJ_HT_PP(obj)->get_properties(*obj TSRMLS_CC),
(copy_ctor_func_t) zval_add_ref, (void *) &tmp, sizeof(zval *));
}
/* }}} */
/* {{{ proto array get_class_methods(mixed class)
Returns an array of method names for class or class instance. */
ZEND_FUNCTION(get_class_methods)
{
zval **class;
zval *method_name;
zend_class_entry *ce = NULL, **pce;
char *string_key;
ulong num_key;
int key_type;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &class)==FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
if (Z_TYPE_PP(class) == IS_OBJECT) {
/* TBI!! new object handlers */
if (!HAS_CLASS_ENTRY(**class)) {
RETURN_FALSE;
}
ce = Z_OBJCE_PP(class);
} else if (Z_TYPE_PP(class) == IS_STRING) {
SEPARATE_ZVAL(class);
zend_str_tolower_nlc(Z_STRVAL_PP(class), Z_STRLEN_PP(class));
if (zend_lookup_class(Z_STRVAL_PP(class), Z_STRLEN_PP(class), &pce TSRMLS_CC) == SUCCESS) {
ce = *pce;
}
}
if (!ce) {
RETURN_NULL();
}
array_init(return_value);
zend_hash_internal_pointer_reset(&ce->function_table);
while ((key_type = zend_hash_get_current_key(&ce->function_table, &string_key, &num_key, 1)) != HASH_KEY_NON_EXISTANT) {
if (key_type == HASH_KEY_IS_STRING) {
MAKE_STD_ZVAL(method_name);
ZVAL_STRING(method_name, string_key, 0);
zend_hash_next_index_insert(return_value->value.ht, &method_name, sizeof(zval *), NULL);
}
zend_hash_move_forward(&ce->function_table);
}
}
/* }}} */
/* {{{ proto bool method_exists(object object, string method)
Checks if the class method exists */
ZEND_FUNCTION(method_exists)
{
zval **klass, **method_name;
char *lcname;
if (ZEND_NUM_ARGS()!=2 || zend_get_parameters_ex(2, &klass, &method_name)==FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
if ((*klass)->type != IS_OBJECT) {
RETURN_FALSE;
}
/* TBI!! new object handlers */
if (!HAS_CLASS_ENTRY(**klass)) {
RETURN_FALSE;
}
convert_to_string_ex(method_name);
lcname = estrndup((*method_name)->value.str.val, (*method_name)->value.str.len);
zend_str_tolower_nlc(lcname, (*method_name)->value.str.len);
if (zend_hash_exists(&Z_OBJCE_PP(klass)->function_table, lcname, (*method_name)->value.str.len+1)) {
efree(lcname);
RETURN_TRUE;
} else {
efree(lcname);
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto bool class_exists(string classname)
Checks if the class exists */
ZEND_FUNCTION(class_exists)
{
zval **class_name;
char *lcname;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &class_name)==FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
convert_to_string_ex(class_name);
lcname = estrndup((*class_name)->value.str.val, (*class_name)->value.str.len);
zend_str_tolower_nlc(lcname, (*class_name)->value.str.len);
if (zend_hash_exists(EG(class_table), lcname, (*class_name)->value.str.len+1)) {
efree(lcname);
RETURN_TRUE;
} else {
efree(lcname);
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto bool function_exists(string function_name)
Checks if the function exists */
ZEND_FUNCTION(function_exists)
{
zval **function_name;
zend_function *func;
char *lcname;
zend_bool retval;
if (ZEND_NUM_ARGS()!=1 || zend_get_parameters_ex(1, &function_name)==FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
convert_to_string_ex(function_name);
lcname = estrndup((*function_name)->value.str.val, (*function_name)->value.str.len);
zend_str_tolower_nlc(lcname, (*function_name)->value.str.len);
retval = (zend_hash_find(EG(function_table), lcname, (*function_name)->value.str.len+1, (void **)&func) == SUCCESS);
efree(lcname);
/*
* A bit of a hack, but not a bad one: we see if the handler of the function
* is actually one that displays "function is disabled" message.
*/
if (retval &&
func->internal_function.handler == zif_display_disabled_function) {
retval = 0;
}
RETURN_BOOL(retval);
}
/* }}} */
/* {{{ proto void leak(int num_bytes=3)
Cause an intentional memory leak, for testing/debugging purposes */
ZEND_FUNCTION(leak)
{
int leakbytes=3;
zval **leak;
if (ZEND_NUM_ARGS()>=1) {
if (zend_get_parameters_ex(1, &leak)==SUCCESS) {
convert_to_long_ex(leak);
leakbytes = (*leak)->value.lval;
}
}
emalloc(leakbytes);
}
/* }}} */
#ifdef ZEND_TEST_EXCEPTIONS
ZEND_FUNCTION(crash)
{
char *nowhere=NULL;
memcpy(nowhere, "something", sizeof("something"));
}
#endif
/* {{{ proto array get_included_files(void)
Returns an array with the file names that were include_once()'d */
ZEND_FUNCTION(get_included_files)
{
char *entry;
if (ZEND_NUM_ARGS() != 0) {
ZEND_WRONG_PARAM_COUNT();
}
array_init(return_value);
zend_hash_internal_pointer_reset(&EG(included_files));
while (zend_hash_get_current_key(&EG(included_files), &entry, NULL, 1) == HASH_KEY_IS_STRING) {
add_next_index_string(return_value, entry, 0);
zend_hash_move_forward(&EG(included_files));
}
}
/* }}} */
/* {{{ proto void trigger_error(string messsage [, int error_type])
Generates a user-level error/warning/notice message */
ZEND_FUNCTION(trigger_error)
{
int error_type = E_USER_NOTICE;
zval **z_error_type, **z_error_message;
switch(ZEND_NUM_ARGS()) {
case 1:
if (zend_get_parameters_ex(1, &z_error_message)==FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
break;
case 2:
if (zend_get_parameters_ex(2, &z_error_message, &z_error_type)==FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
convert_to_long_ex(z_error_type);
error_type = (*z_error_type)->value.lval;
switch (error_type) {
case E_USER_ERROR:
case E_USER_WARNING:
case E_USER_NOTICE:
break;
default:
zend_error(E_WARNING, "Invalid error type specified");
RETURN_FALSE;
break;
}
break;
default:
ZEND_WRONG_PARAM_COUNT();
}
convert_to_string_ex(z_error_message);
zend_error(error_type, "%s", (*z_error_message)->value.str.val);
RETURN_TRUE;
}
/* }}} */
/* {{{ proto string set_error_handler(string error_handler)
Sets a user-defined error handler function. Returns the previously defined error handler, or false on error */
ZEND_FUNCTION(set_error_handler)
{
zval **error_handler;
zend_bool had_orig_error_handler=0;
if (ZEND_NUM_ARGS()!=1 || zend_get_parameters_ex(1, &error_handler)==FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
convert_to_string_ex(error_handler);
if (EG(user_error_handler)) {
had_orig_error_handler = 1;
*return_value = *EG(user_error_handler);
zval_copy_ctor(return_value);
zend_ptr_stack_push(&EG(user_error_handlers), EG(user_error_handler));
}
ALLOC_ZVAL(EG(user_error_handler));
if (Z_STRLEN_PP(error_handler)==0) { /* unset user-defined handler */
FREE_ZVAL(EG(user_error_handler));
EG(user_error_handler) = NULL;
RETURN_TRUE;
}
*EG(user_error_handler) = **error_handler;
zval_copy_ctor(EG(user_error_handler));
if (!had_orig_error_handler) {
RETURN_NULL();
}
}
/* }}} */
/* {{{ proto void restore_error_handler(void)
Restores the previously defined error handler function */
ZEND_FUNCTION(restore_error_handler)
{
if (EG(user_error_handler)) {
zval_ptr_dtor(&EG(user_error_handler));
}
if (zend_ptr_stack_num_elements(&EG(user_error_handlers))==0) {
EG(user_error_handler) = NULL;
} else {
EG(user_error_handler) = zend_ptr_stack_pop(&EG(user_error_handlers));
}
RETURN_TRUE;
}
/* }}} */
/* {{{ proto string set_exception_handler(string exception_handler)
Sets a user-defined exception handler function. Returns the previously defined exception handler, or false on error */
ZEND_FUNCTION(set_exception_handler)
{
zval **exception_handler;
zend_bool had_orig_exception_handler=0;
if (ZEND_NUM_ARGS()!=1 || zend_get_parameters_ex(1, &exception_handler)==FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
convert_to_string_ex(exception_handler);
if (EG(user_exception_handler)) {
had_orig_exception_handler = 1;
*return_value = *EG(user_exception_handler);
zval_copy_ctor(return_value);
zend_ptr_stack_push(&EG(user_exception_handlers), EG(user_exception_handler));
}
ALLOC_ZVAL(EG(user_exception_handler));
if (Z_STRLEN_PP(exception_handler)==0) { /* unset user-defined handler */
FREE_ZVAL(EG(user_exception_handler));
EG(user_exception_handler) = NULL;
RETURN_TRUE;
}
*EG(user_exception_handler) = **exception_handler;
zval_copy_ctor(EG(user_exception_handler));
if (!had_orig_exception_handler) {
RETURN_NULL();
}
}
/* }}} */
/* {{{ proto void restore_exception_handler(void)
Restores the previously defined exception handler function */
ZEND_FUNCTION(restore_exception_handler)
{
if (EG(user_exception_handler)) {
zval_ptr_dtor(&EG(user_exception_handler));
}
if (zend_ptr_stack_num_elements(&EG(user_exception_handlers))==0) {
EG(user_exception_handler) = NULL;
} else {
EG(user_exception_handler) = zend_ptr_stack_pop(&EG(user_exception_handlers));
}
RETURN_TRUE;
}
/* }}} */
static int copy_class_name(zend_class_entry **pce, int num_args, va_list args, zend_hash_key *hash_key)
{
zval *array = va_arg(args, zval *);
zend_class_entry *ce = *pce;
if (hash_key->nKeyLength==0 || hash_key->arKey[0]!=0) {
add_next_index_stringl(array, ce->name, ce->name_length, 1);
}
return 0;
}
/* {{{ proto array get_declared_classes(void)
Returns an array of all declared classes. */
ZEND_FUNCTION(get_declared_classes)
{
if (ZEND_NUM_ARGS() != 0) {
ZEND_WRONG_PARAM_COUNT();
}
array_init(return_value);
zend_hash_apply_with_arguments(EG(class_table), (apply_func_args_t) copy_class_name, 1, return_value);
}
/* }}} */
static int copy_function_name(zend_function *func, int num_args, va_list args, zend_hash_key *hash_key)
{
zval *internal_ar = va_arg(args, zval *),
*user_ar = va_arg(args, zval *);
if (hash_key->nKeyLength == 0 || hash_key->arKey[0] == 0) {
return 0;
}
if (func->type == ZEND_INTERNAL_FUNCTION) {
add_next_index_stringl(internal_ar, hash_key->arKey, hash_key->nKeyLength-1, 1);
} else if (func->type == ZEND_USER_FUNCTION) {
add_next_index_stringl(user_ar, hash_key->arKey, hash_key->nKeyLength-1, 1);
}
return 0;
}
/* {{{ proto array get_defined_functions(void)
Returns an array of all defined functions */
ZEND_FUNCTION(get_defined_functions)
{
zval *internal;
zval *user;
if (ZEND_NUM_ARGS() != 0) {
ZEND_WRONG_PARAM_COUNT();
}
MAKE_STD_ZVAL(internal);
MAKE_STD_ZVAL(user);
array_init(internal);
array_init(user);
array_init(return_value);
zend_hash_apply_with_arguments(EG(function_table), (apply_func_args_t) copy_function_name, 2, internal, user);
if (zend_hash_add(return_value->value.ht, "internal", sizeof("internal"), (void **)&internal, sizeof(zval *), NULL) == FAILURE) {
zend_error(E_WARNING, "Cannot add internal functions to return value from get_defined_functions()");
RETURN_FALSE;
}
if (zend_hash_add(return_value->value.ht, "user", sizeof("user"), (void **)&user, sizeof(zval *), NULL) == FAILURE) {
zend_error(E_WARNING, "Cannot add user functions to return value from get_defined_functions()");
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto array get_defined_vars(void)
Returns an associative array of names and values of all currently defined variable names (variables in the current scope) */
ZEND_FUNCTION(get_defined_vars)
{
zval *tmp;
array_init(return_value);
zend_hash_copy(return_value->value.ht, EG(active_symbol_table),
(copy_ctor_func_t)zval_add_ref, &tmp, sizeof(zval *));
}
/* }}} */
#define LAMBDA_TEMP_FUNCNAME "__lambda_func"
/* {{{ proto string create_function(string args, string code)
Creates an anonymous function, and returns its name (funny, eh?) */
ZEND_FUNCTION(create_function)
{
char *eval_code, *function_name;
int eval_code_length, function_name_length;
zval **z_function_args, **z_function_code;
int retval;
char *eval_name;
if (ZEND_NUM_ARGS()!=2 || zend_get_parameters_ex(2, &z_function_args, &z_function_code)==FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
convert_to_string_ex(z_function_args);
convert_to_string_ex(z_function_code);
eval_code_length = sizeof("function " LAMBDA_TEMP_FUNCNAME)
+Z_STRLEN_PP(z_function_args)
+2 /* for the args parentheses */
+2 /* for the curly braces */
+Z_STRLEN_PP(z_function_code);
eval_code = (char *) emalloc(eval_code_length);
sprintf(eval_code, "function " LAMBDA_TEMP_FUNCNAME "(%s){%s}", Z_STRVAL_PP(z_function_args), Z_STRVAL_PP(z_function_code));
eval_name = zend_make_compiled_string_description("runtime-created function" TSRMLS_CC);
retval = zend_eval_string(eval_code, NULL, eval_name TSRMLS_CC);
efree(eval_code);
efree(eval_name);
if (retval==SUCCESS) {
zend_function *func;
if (zend_hash_find(EG(function_table), LAMBDA_TEMP_FUNCNAME, sizeof(LAMBDA_TEMP_FUNCNAME), (void **) &func)==FAILURE) {
zend_error(E_ERROR, "Unexpected inconsistency in create_function()");
RETURN_FALSE;
}
function_add_ref(func);
function_name = (char *) emalloc(sizeof("0lambda_")+MAX_LENGTH_OF_LONG);
do {
sprintf(function_name, "%clambda_%d", 0, ++EG(lambda_count));
function_name_length = strlen(function_name+1)+1;
} while (zend_hash_add(EG(function_table), function_name, function_name_length+1, func, sizeof(zend_function), NULL)==FAILURE);
zend_hash_del(EG(function_table), LAMBDA_TEMP_FUNCNAME, sizeof(LAMBDA_TEMP_FUNCNAME));
RETURN_STRINGL(function_name, function_name_length, 0);
} else {
RETURN_FALSE;
}
}
/* }}} */
#if ZEND_DEBUG
ZEND_FUNCTION(zend_test_func)
{
zval *arg1, *arg2;
zend_get_parameters(ht, 2, &arg1, &arg2);
}
#ifdef ZTS
ZEND_FUNCTION(zend_thread_id)
{
RETURN_LONG(tsrm_thread_id());
}
#endif
#endif
/* {{{ proto string get_resource_type(resource res)
Get the resource type name for a given resource */
ZEND_FUNCTION(get_resource_type)
{
char *resource_type;
zval **z_resource_type;
if (ZEND_NUM_ARGS()!=1 || zend_get_parameters_ex(1, &z_resource_type)==FAILURE) {
ZEND_WRONG_PARAM_COUNT();
}
if (Z_TYPE_PP(z_resource_type) != IS_RESOURCE) {
zend_error(E_WARNING, "Supplied argument is not a valid resource handle");
RETURN_FALSE;
}
resource_type = zend_rsrc_list_get_rsrc_type(Z_LVAL_PP(z_resource_type) TSRMLS_CC);
if (resource_type) {
RETURN_STRING(resource_type, 1);
} else {
RETURN_STRING("Unknown", 1);
}
}
/* }}} */
static int add_extension_info(zend_module_entry *module, void *arg TSRMLS_DC)
{
zval *name_array = (zval *)arg;
add_next_index_string(name_array, module->name, 1);
return 0;
}
static int add_constant_info(zend_constant *constant, void *arg TSRMLS_DC)
{
zval *name_array = (zval *)arg;
zval *const_val;
MAKE_STD_ZVAL(const_val);
*const_val = constant->value;
zval_copy_ctor(const_val);
INIT_PZVAL(const_val);
add_assoc_zval_ex(name_array, constant->name, constant->name_len, const_val);
return 0;
}
/* {{{ proto array get_loaded_extensions(void)
Return an array containing names of loaded extensions */
ZEND_FUNCTION(get_loaded_extensions)
{
if (ZEND_NUM_ARGS() != 0) {
WRONG_PARAM_COUNT;
}
array_init(return_value);
zend_hash_apply_with_argument(&module_registry, (apply_func_arg_t) add_extension_info, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto array get_defined_constants(void)
Return an array containing the names and values of all defined constants */
ZEND_FUNCTION(get_defined_constants)
{
if (ZEND_NUM_ARGS() != 0) {
WRONG_PARAM_COUNT;
}
array_init(return_value);
zend_hash_apply_with_argument(EG(zend_constants), (apply_func_arg_t) add_constant_info, return_value TSRMLS_CC);
}
/* }}} */
static zval *debug_backtrace_get_args(void ***curpos TSRMLS_DC) {
void **p = *curpos - 2;
zval *arg_array, **arg;
int arg_count = (ulong) *p;
*curpos -= (arg_count+2);
MAKE_STD_ZVAL(arg_array);
array_init(arg_array);
p -= arg_count;
while (--arg_count >= 0) {
arg = (zval **) p++;
SEPARATE_ZVAL_TO_MAKE_IS_REF(arg);
(*arg)->refcount++;
add_next_index_zval(arg_array, *arg);
}
return arg_array;
}
/* {{{ proto void debug_backtrace(void)
Prints out a backtrace */
ZEND_FUNCTION(debug_backtrace)
{
zend_execute_data *ptr;
int lineno;
char *function_name;
char *filename;
char *class_name;
char *call_type;
char *include_filename = NULL;
zval *stack_frame;
void **cur_arg_pos = EG(argument_stack).top_element;
void **args = cur_arg_pos;
int arg_stack_consistent = 0;
if (ZEND_NUM_ARGS()) {
WRONG_PARAM_COUNT;
}
while (--args >= EG(argument_stack).elements) {
if (*args--) {
break;
}
args -= *(ulong*)args;
if (args == EG(argument_stack).elements) {
arg_stack_consistent = 1;
break;
}
}
ptr = EG(current_execute_data);
/* skip debug_backtrace() */
ptr = ptr->prev_execute_data;
cur_arg_pos -= 2;
array_init(return_value);
while (ptr) {
MAKE_STD_ZVAL(stack_frame);
array_init(stack_frame);
if (ptr->op_array) {
filename = ptr->op_array->filename;
lineno = ptr->opline->lineno;
add_assoc_string_ex(stack_frame, "file", sizeof("file"), filename, 1);
add_assoc_long_ex(stack_frame, "line", sizeof("line"), lineno);
/* try to fetch args only if an FCALL was just made - elsewise we're in the middle of a function
* and debug_baktrace() might have been called by the error_handler. in this case we don't
* want to pop anything of the argument-stack */
} else {
filename = NULL;
}
function_name = ptr->function_state.function->common.function_name;
if (function_name) {
add_assoc_string_ex(stack_frame, "function", sizeof("function"), function_name, 1);
if (ptr->object) {
class_name = Z_OBJCE(*ptr->object)->name;
call_type = "->";
} else if (ptr->function_state.function->common.scope) {
class_name = ptr->function_state.function->common.scope->name;
call_type = "::";
} else {
class_name = NULL;
call_type = NULL;
}
if (class_name) {
add_assoc_string_ex(stack_frame, "class", sizeof("class"), class_name, 1);
add_assoc_string_ex(stack_frame, "type", sizeof("type"), call_type, 1);
}
if ((! ptr->opline) || ((ptr->opline->opcode == ZEND_DO_FCALL_BY_NAME) || (ptr->opline->opcode == ZEND_DO_FCALL))) {
if (arg_stack_consistent) {
add_assoc_zval_ex(stack_frame, "args", sizeof("args"), debug_backtrace_get_args(&cur_arg_pos TSRMLS_CC));
}
}
} else {
/* i know this is kinda ugly, but i'm trying to avoid extra cycles in the main execution loop */
zend_bool build_filename_arg = 1;
switch (ptr->opline->op2.u.constant.value.lval) {
case ZEND_EVAL:
function_name = "eval";
build_filename_arg = 0;
break;
case ZEND_INCLUDE:
function_name = "include";
break;
case ZEND_REQUIRE:
function_name = "require";
break;
case ZEND_INCLUDE_ONCE:
function_name = "include_once";
break;
case ZEND_REQUIRE_ONCE:
function_name = "require_once";
break;
default:
/* this can actually happen if you use debug_backtrace() in your error_handler and
* you're in the top-scope */
function_name = "unknown";
build_filename_arg = 0;
break;
}
if (build_filename_arg && include_filename) {
zval *arg_array;
MAKE_STD_ZVAL(arg_array);
array_init(arg_array);
/* include_filename always points to the last filename of the last last called-fuction.
if we have called include in the frame above - this is the file we have included.
*/
add_next_index_string(arg_array, include_filename, 1);
add_assoc_zval_ex(stack_frame, "args", sizeof("args"), arg_array);
}
add_assoc_string_ex(stack_frame, "function", sizeof("function"), function_name, 1);
}
add_next_index_zval(return_value, stack_frame);
include_filename = filename;
ptr = ptr->prev_execute_data;
}
}
/* }}} */
/* {{{ proto bool extension_loaded(string extension_name)
Returns true if the named extension is loaded */
ZEND_FUNCTION(extension_loaded)
{
zval **extension_name;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &extension_name)) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(extension_name);
if (zend_hash_exists(&module_registry, Z_STRVAL_PP(extension_name), Z_STRLEN_PP(extension_name)+1)) {
RETURN_TRUE;
} else {
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto array get_extension_funcs(string extension_name)
Returns an array with the names of functions belonging to the named extension */
ZEND_FUNCTION(get_extension_funcs)
{
zval **extension_name;
zend_module_entry *module;
zend_function_entry *func;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &extension_name)) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(extension_name);
if (zend_hash_find(&module_registry, Z_STRVAL_PP(extension_name),
Z_STRLEN_PP(extension_name)+1, (void**)&module) == FAILURE) {
return;
}
array_init(return_value);
func = module->functions;
if (!func) {
return;
}
while (func->fname) {
add_next_index_string(return_value, func->fname, 1);
func++;
}
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*/
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