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07c81e5a86
phpv8/v8js_object_export.cc
Stefan Siegl d44592910d Retain object indentity on 'return $this'
2016-03-25 19:15:25 +01:00

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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2013 The PHP Group |
+----------------------------------------------------------------------+
| http://www.opensource.org/licenses/mit-license.php MIT License |
+----------------------------------------------------------------------+
| Author: Jani Taskinen <jani.taskinen@iki.fi> |
| Author: Patrick Reilly <preilly@php.net> |
+----------------------------------------------------------------------+
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
extern "C" {
#include "php.h"
#include "ext/date/php_date.h"
#include "ext/standard/php_string.h"
#include "zend_interfaces.h"
#include "zend_closures.h"
#include "zend_exceptions.h"
}
#include "php_v8js_macros.h"
#include "v8js_array_access.h"
#include "v8js_object_export.h"
#include "v8js_v8object_class.h"
static void v8js_weak_object_callback(const v8::WeakCallbackData<v8::Object, zval> &data);
/* Callback for PHP methods and functions */
static void v8js_call_php_func(zval *value, zend_class_entry *ce, zend_function *method_ptr, v8::Isolate *isolate, const v8::FunctionCallbackInfo<v8::Value>& info TSRMLS_DC) /* {{{ */
{
v8::Handle<v8::Value> return_value = V8JS_NULL;
zend_fcall_info fci;
zend_fcall_info_cache fcc;
zval fname, *retval_ptr = NULL, **argv = NULL;
zend_uint argc = info.Length(), min_num_args = 0, max_num_args = 0;
char *error;
int error_len, i;
v8js_ctx *ctx = (v8js_ctx *) isolate->GetData(0);
/* Set parameter limits */
min_num_args = method_ptr->common.required_num_args;
max_num_args = method_ptr->common.num_args;
/* Function name to call */
INIT_ZVAL(fname);
ZVAL_STRING(&fname, method_ptr->common.function_name, 0);
/* zend_fcall_info */
fci.size = sizeof(fci);
fci.function_table = &ce->function_table;
fci.function_name = &fname;
fci.symbol_table = NULL;
fci.object_ptr = value;
fci.retval_ptr_ptr = &retval_ptr;
fci.param_count = 0;
/* Check for passed vs required number of arguments */
if (argc < min_num_args)
{
error_len = spprintf(&error, 0,
"%s::%s() expects %s %d parameter%s, %d given",
ce->name,
method_ptr->common.function_name,
min_num_args == max_num_args ? "exactly" : argc < min_num_args ? "at least" : "at most",
argc < min_num_args ? min_num_args : max_num_args,
(argc < min_num_args ? min_num_args : max_num_args) == 1 ? "" : "s",
argc);
return_value = V8JS_THROW(isolate, TypeError, error, error_len);
if (ce == zend_ce_closure) {
efree(const_cast<char*>(method_ptr->internal_function.function_name));
efree(method_ptr);
}
efree(error);
info.GetReturnValue().Set(return_value);
return;
}
/* Convert parameters passed from V8 */
if (argc) {
fci.params = (zval ***) safe_emalloc(argc, sizeof(zval **), 0);
argv = (zval **) safe_emalloc(argc, sizeof(zval *), 0);
for (i = 0; i < argc; i++) {
v8::Local<v8::Value> php_object;
if (info[i]->IsObject()) {
php_object = v8::Local<v8::Object>::Cast(info[i])->GetHiddenValue(V8JS_SYM(PHPJS_OBJECT_KEY));
}
if (!php_object.IsEmpty()) {
/* This is a PHP object, passed to JS and back. */
argv[i] = reinterpret_cast<zval *>(v8::External::Cast(*php_object)->Value());
Z_ADDREF_P(argv[i]);
} else {
MAKE_STD_ZVAL(argv[i]);
if (v8js_to_zval(info[i], argv[i], ctx->flags, isolate TSRMLS_CC) == FAILURE) {
fci.param_count++;
error_len = spprintf(&error, 0, "converting parameter #%d passed to %s() failed", i + 1, method_ptr->common.function_name);
return_value = V8JS_THROW(isolate, Error, error, error_len);
efree(error);
goto failure;
}
}
fci.params[fci.param_count++] = &argv[i];
}
} else {
fci.params = NULL;
}
fci.no_separation = 1;
info.GetReturnValue().Set(V8JS_NULL);
zend_try {
{
isolate->Exit();
v8::Unlocker unlocker(isolate);
/* zend_fcall_info_cache */
fcc.initialized = 1;
fcc.function_handler = method_ptr;
fcc.calling_scope = ce;
fcc.called_scope = ce;
fcc.object_ptr = value;
zend_call_function(&fci, &fcc TSRMLS_CC);
}
isolate->Enter();
}
zend_catch {
v8js_terminate_execution(isolate);
V8JSG(fatal_error_abort) = 1;
}
zend_end_try();
failure:
/* Cleanup */
if (argc) {
for (i = 0; i < fci.param_count; i++) {
zval_ptr_dtor(&argv[i]);
}
efree(argv);
efree(fci.params);
}
if(EG(exception) && !V8JSG(compat_php_exceptions)) {
if(ctx->flags & V8JS_FLAG_PROPAGATE_PHP_EXCEPTIONS) {
return_value = isolate->ThrowException(zval_to_v8js(EG(exception), isolate TSRMLS_CC));
zend_clear_exception(TSRMLS_C);
} else {
v8js_terminate_execution(isolate);
}
} else if (retval_ptr == value) {
// special case: "return $this"
return_value = info.Holder();
} else if (retval_ptr != NULL) {
return_value = zval_to_v8js(retval_ptr, isolate TSRMLS_CC);
}
if (retval_ptr != NULL) {
zval_ptr_dtor(&retval_ptr);
}
info.GetReturnValue().Set(return_value);
}
/* }}} */
/* Callback for PHP methods and functions */
void v8js_php_callback(const v8::FunctionCallbackInfo<v8::Value>& info) /* {{{ */
{
v8::Isolate *isolate = info.GetIsolate();
v8::Local<v8::Object> self = info.Holder();
V8JS_TSRMLS_FETCH();
zval *value = reinterpret_cast<zval *>(v8::External::Cast(*self->GetHiddenValue(V8JS_SYM(PHPJS_OBJECT_KEY)))->Value());
zend_function *method_ptr;
zend_class_entry *ce = Z_OBJCE_P(value);
/* Set method_ptr from v8::External or fetch the closure invoker */
if (!info.Data().IsEmpty() && info.Data()->IsExternal()) {
method_ptr = static_cast<zend_function *>(v8::External::Cast(*info.Data())->Value());
} else {
method_ptr = zend_get_closure_invoke_method(value TSRMLS_CC);
}
return v8js_call_php_func(value, ce, method_ptr, isolate, info TSRMLS_CC);
}
/* Callback for PHP constructor calls */
static void v8js_construct_callback(const v8::FunctionCallbackInfo<v8::Value>& info) /* {{{ */
{
v8::Isolate *isolate = info.GetIsolate();
info.GetReturnValue().Set(V8JS_UNDEFINED);
// @todo assert constructor call
v8::Handle<v8::Object> newobj = info.This();
v8::Local<v8::External> php_object;
zval *value;
if (!info.IsConstructCall()) {
return;
}
v8::Local<v8::Array> cons_data = v8::Local<v8::Array>::Cast(info.Data());
v8::Local<v8::External> ext_tmpl = v8::Local<v8::External>::Cast(cons_data->Get(0));
v8::Local<v8::External> ext_ce = v8::Local<v8::External>::Cast(cons_data->Get(1));
v8js_ctx *ctx = (v8js_ctx *) isolate->GetData(0);
if (info[0]->IsExternal()) {
// Object created by v8js in v8js_hash_to_jsobj, PHP object passed as v8::External.
php_object = v8::Local<v8::External>::Cast(info[0]);
value = reinterpret_cast<zval *>(php_object->Value());
if(ctx->weak_objects.count(value)) {
// We already exported this object, hence no need to add another
// ref, v8 won't give us a second weak-object callback anyways.
newobj->SetAlignedPointerInInternalField(0, ext_tmpl->Value());
newobj->SetHiddenValue(V8JS_SYM(PHPJS_OBJECT_KEY), php_object);
return;
}
// Increase the reference count of this value because we're storing it internally for use later
// See https://github.com/preillyme/v8js/issues/6
Z_ADDREF_P(value);
} else {
// Object created from JavaScript context. Need to create PHP object first.
V8JS_TSRMLS_FETCH();
zend_class_entry *ce = static_cast<zend_class_entry *>(ext_ce->Value());
zend_function *ctor_ptr = ce->constructor;
// Check access on __construct function, if any
if (ctor_ptr != NULL && (ctor_ptr->common.fn_flags & ZEND_ACC_PUBLIC) == 0) {
info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Call to protected __construct() not allowed")));
return;
}
MAKE_STD_ZVAL(value);
object_init_ex(value, ce);
// Call __construct function
if (ctor_ptr != NULL) {
v8js_call_php_func(value, ce, ctor_ptr, isolate, info TSRMLS_CC);
}
php_object = v8::External::New(isolate, value);
}
newobj->SetAlignedPointerInInternalField(0, ext_tmpl->Value());
newobj->SetHiddenValue(V8JS_SYM(PHPJS_OBJECT_KEY), php_object);
// Since we got to decrease the reference count again, in case v8 garbage collector
// decides to dispose the JS object, we add a weak persistent handle and register
// a callback function that removes the reference.
ctx->weak_objects[value].Reset(isolate, newobj);
ctx->weak_objects[value].SetWeak(value, v8js_weak_object_callback);
// Just tell v8 that we're allocating some external memory
// (for the moment we just always tell 1k instead of trying to find out actual values)
isolate->AdjustAmountOfExternalAllocatedMemory(ctx->average_object_size);
}
/* }}} */
static void v8js_weak_object_callback(const v8::WeakCallbackData<v8::Object, zval> &data) {
v8::Isolate *isolate = data.GetIsolate();
zval *value = data.GetParameter();
zval_ptr_dtor(&value);
v8js_ctx *ctx = (v8js_ctx *) isolate->GetData(0);
ctx->weak_objects.at(value).Reset();
ctx->weak_objects.erase(value);
isolate->AdjustAmountOfExternalAllocatedMemory(-ctx->average_object_size);
}
static void v8js_weak_closure_callback(const v8::WeakCallbackData<v8::Object, v8js_tmpl_t> &data) {
v8::Isolate *isolate = data.GetIsolate();
v8js_tmpl_t *persist_tpl_ = data.GetParameter();
persist_tpl_->Reset();
delete persist_tpl_;
v8js_ctx *ctx = (v8js_ctx *) isolate->GetData(0);
ctx->weak_closures.at(persist_tpl_).Reset();
ctx->weak_closures.erase(persist_tpl_);
};
#define IS_MAGIC_FUNC(mname) \
((key_len == sizeof(mname)) && \
!strncasecmp(key, mname, key_len - 1))
#define PHP_V8JS_CALLBACK(isolate, mptr, tmpl) \
v8::FunctionTemplate::New((isolate), v8js_php_callback, v8::External::New((isolate), mptr), v8::Signature::New((isolate), tmpl))->GetFunction()
static void v8js_named_property_enumerator(const v8::PropertyCallbackInfo<v8::Array> &info) /* {{{ */
{
// note: 'special' properties like 'constructor' are not enumerated.
v8::Isolate *isolate = info.GetIsolate();
v8::Local<v8::Object> self = info.Holder();
v8::Local<v8::Array> result = v8::Array::New(isolate, 0);
uint32_t result_len = 0;
V8JS_TSRMLS_FETCH();
zend_class_entry *ce;
zend_function *method_ptr;
HashTable *proptable;
HashPosition pos;
char *key = NULL;
uint key_len;
ulong index;
zval *object = reinterpret_cast<zval *>(v8::External::Cast(*self->GetHiddenValue(V8JS_SYM(PHPJS_OBJECT_KEY)))->Value());
ce = Z_OBJCE_P(object);
/* enumerate all methods */
zend_hash_internal_pointer_reset_ex(&ce->function_table, &pos);
for (;; zend_hash_move_forward_ex(&ce->function_table, &pos)) {
if (zend_hash_get_current_key_ex(&ce->function_table, &key, &key_len, &index, 0, &pos) != HASH_KEY_IS_STRING ||
zend_hash_get_current_data_ex(&ce->function_table, (void **) &method_ptr, &pos) == FAILURE
) {
break;
}
if ((method_ptr->common.fn_flags & ZEND_ACC_PUBLIC) == 0) {
/* Allow only public methods */
continue;
}
if ((method_ptr->common.fn_flags & (ZEND_ACC_CTOR|ZEND_ACC_DTOR|ZEND_ACC_CLONE)) != 0) {
/* no __construct, __destruct(), or __clone() functions */
continue;
}
// hide (do not enumerate) other PHP magic functions
if (IS_MAGIC_FUNC(ZEND_CALLSTATIC_FUNC_NAME) ||
IS_MAGIC_FUNC(ZEND_SLEEP_FUNC_NAME) ||
IS_MAGIC_FUNC(ZEND_WAKEUP_FUNC_NAME) ||
IS_MAGIC_FUNC(ZEND_SET_STATE_FUNC_NAME) ||
IS_MAGIC_FUNC(ZEND_GET_FUNC_NAME) ||
IS_MAGIC_FUNC(ZEND_SET_FUNC_NAME) ||
IS_MAGIC_FUNC(ZEND_UNSET_FUNC_NAME) ||
IS_MAGIC_FUNC(ZEND_CALL_FUNC_NAME) ||
IS_MAGIC_FUNC(ZEND_INVOKE_FUNC_NAME) ||
IS_MAGIC_FUNC(ZEND_ISSET_FUNC_NAME)) {
continue;
}
v8::Local<v8::String> method_name = V8JS_STR(method_ptr->common.function_name);
// rename PHP special method names to JS equivalents.
if (IS_MAGIC_FUNC(ZEND_TOSTRING_FUNC_NAME)) {
method_name = V8JS_SYM("toString");
}
result->Set(result_len++, method_name);
}
/* enumerate all properties */
/* Z_OBJPROP uses the get_properties handler */
proptable = Z_OBJPROP_P(object);
zend_hash_internal_pointer_reset_ex(proptable, &pos);
for (;; zend_hash_move_forward_ex(proptable, &pos)) {
int i = zend_hash_get_current_key_ex(proptable, &key, &key_len, &index, 0, &pos);
if (i == HASH_KEY_NON_EXISTANT)
break;
// for consistency with the 'in' operator, skip properties whose
// value IS_NULL (like isset does)
zval **data;
if (zend_hash_get_current_data_ex(proptable, (void **) &data, &pos) == SUCCESS &&
ZVAL_IS_NULL(*data))
continue;
if (i == HASH_KEY_IS_STRING) {
/* skip protected and private members */
if (key[0] == '\0') {
continue;
}
// prefix enumerated property names with '$' so they can be
// dereferenced unambiguously (ie, don't conflict with method
// names)
char *prefixed = static_cast<char *>(emalloc(key_len + 1));
prefixed[0] = '$';
strncpy(prefixed + 1, key, key_len);
result->Set(result_len++, V8JS_STRL(prefixed, key_len));
efree(prefixed);
} else {
// even numeric indices are enumerated as strings in JavaScript
result->Set(result_len++, V8JS_FLOAT((double) index)->ToString());
}
}
/* done */
info.GetReturnValue().Set(result);
}
/* }}} */
static void v8js_invoke_callback(const v8::FunctionCallbackInfo<v8::Value>& info) /* {{{ */
{
v8::Isolate *isolate = info.GetIsolate();
v8::Local<v8::Object> self = info.Holder();
v8::Local<v8::Function> cb = v8::Local<v8::Function>::Cast(info.Data());
int argc = info.Length(), i;
v8::Local<v8::Value> *argv = static_cast<v8::Local<v8::Value> *>(alloca(sizeof(v8::Local<v8::Value>) * argc));
v8::Local<v8::Value> result;
V8JS_TSRMLS_FETCH();
for (i=0; i<argc; i++) {
new(&argv[i]) v8::Local<v8::Value>;
argv[i] = info[i];
}
if (info.IsConstructCall()) {
v8js_ctx *ctx = (v8js_ctx *) isolate->GetData(0);
v8::String::Utf8Value str(self->GetConstructorName()->ToString());
const char *constructor_name = ToCString(str);
zend_class_entry **pce;
zend_lookup_class(constructor_name, str.length(), &pce TSRMLS_CC);
v8::Local<v8::FunctionTemplate> new_tpl;
new_tpl = v8::Local<v8::FunctionTemplate>::New
(isolate, ctx->template_cache.at((*pce)->name));
result = new_tpl->GetFunction()->NewInstance(argc, argv);
} else {
result = cb->Call(self, argc, argv);
}
info.GetReturnValue().Set(result);
}
/* }}} */
// this is a magic '__call' implementation for PHP classes which don't actually
// have a '__call' magic function. This way we can always force a method
// call (as opposed to a property get) from JavaScript using __call.
static void v8js_fake_call_impl(const v8::FunctionCallbackInfo<v8::Value>& info) /* {{{ */
{
v8::Isolate *isolate = info.GetIsolate();
v8::Local<v8::Object> self = info.Holder();
v8::Handle<v8::Value> return_value;
char *error;
int error_len;
V8JS_TSRMLS_FETCH();
zend_class_entry *ce;
zval *object = reinterpret_cast<zval *>(v8::External::Cast(*self->GetHiddenValue(V8JS_SYM(PHPJS_OBJECT_KEY)))->Value());
ce = Z_OBJCE_P(object);
// first arg is method name, second arg is array of args.
if (info.Length() < 2) {
error_len = spprintf(&error, 0,
"%s::__call expects 2 parameters, %d given",
ce->name, (int) info.Length());
return_value = V8JS_THROW(isolate, TypeError, error, error_len);
efree(error);
info.GetReturnValue().Set(return_value);
return;
}
if (!info[1]->IsArray()) {
error_len = spprintf(&error, 0,
"%s::__call expects 2nd parameter to be an array",
ce->name);
return_value = V8JS_THROW(isolate, TypeError, error, error_len);
efree(error);
info.GetReturnValue().Set(return_value);
return;
}
v8::String::Utf8Value str(info[0]->ToString());
const char *method_name = ToCString(str);
uint method_name_len = strlen(method_name);
v8::Local<v8::Array> args = v8::Local<v8::Array>::Cast(info[1]);
if (args->Length() > 1000000) {
// prevent overflow, since args->Length() is a uint32_t and args
// in the Function->Call method below is a (signed) int.
error_len = spprintf(&error, 0,
"%s::__call expects fewer than a million arguments",
ce->name);
return_value = V8JS_THROW(isolate, TypeError, error, error_len);
efree(error);
info.GetReturnValue().Set(return_value);
return;
}
// okay, look up the method name and manually invoke it.
const zend_object_handlers *h = Z_OBJ_HT_P(object);
zend_function *method_ptr =
h->get_method(&object, (char*)method_name, method_name_len
ZEND_HASH_KEY_NULL TSRMLS_CC);
if (method_ptr == NULL ||
(method_ptr->common.fn_flags & ZEND_ACC_PUBLIC) == 0 ||
(method_ptr->common.fn_flags & (ZEND_ACC_CTOR|ZEND_ACC_DTOR|ZEND_ACC_CLONE)) != 0) {
error_len = spprintf(&error, 0,
"%s::__call to %s method %s", ce->name,
(method_ptr == NULL) ? "undefined" : "non-public", method_name);
return_value = V8JS_THROW(isolate, TypeError, error, error_len);
efree(error);
info.GetReturnValue().Set(return_value);
return;
}
v8::Local<v8::FunctionTemplate> tmpl =
v8::Local<v8::FunctionTemplate>::New
(isolate, *reinterpret_cast<v8js_tmpl_t *>(self->GetAlignedPointerFromInternalField(0)));
// use v8js_php_callback to actually execute the method
v8::Local<v8::Function> cb = PHP_V8JS_CALLBACK(isolate, method_ptr, tmpl);
uint32_t i, argc = args->Length();
v8::Local<v8::Value> *argv = static_cast<v8::Local<v8::Value> *>(alloca(sizeof(v8::Local<v8::Value>) * argc));
for (i=0; i<argc; i++) {
new(&argv[i]) v8::Local<v8::Value>;
argv[i] = args->Get(i);
}
return_value = cb->Call(info.This(), (int) argc, argv);
info.GetReturnValue().Set(return_value);
}
/* }}} */
/* This method handles named property and method get/set/query/delete. */
template<typename T>
inline v8::Local<v8::Value> v8js_named_property_callback(v8::Local<v8::String> property, const v8::PropertyCallbackInfo<T> &info, property_op_t callback_type, v8::Local<v8::Value> set_value) /* {{{ */
{
v8::Isolate *isolate = info.GetIsolate();
v8js_ctx *ctx = (v8js_ctx *) isolate->GetData(0);
v8::String::Utf8Value cstr(property);
const char *name = ToCString(cstr);
uint name_len = strlen(name);
char *lower = estrndup(name, name_len);
const char *method_name;
uint method_name_len;
v8::Local<v8::Object> self = info.Holder();
v8::Local<v8::Value> ret_value;
v8::Local<v8::Function> cb;
V8JS_TSRMLS_FETCH();
zend_class_entry *scope, *ce;
zend_function *method_ptr = NULL;
zval *php_value;
zval *object = reinterpret_cast<zval *>(v8::External::Cast(*self->GetHiddenValue(V8JS_SYM(PHPJS_OBJECT_KEY)))->Value());
v8js_tmpl_t *tmpl_ptr = reinterpret_cast<v8js_tmpl_t *>(self->GetAlignedPointerFromInternalField(0));
v8::Local<v8::FunctionTemplate> tmpl = v8::Local<v8::FunctionTemplate>::New(isolate, *tmpl_ptr);
ce = scope = Z_OBJCE_P(object);
/* First, check the (case-insensitive) method table */
php_strtolower(lower, name_len);
method_name = lower;
method_name_len = name_len;
// toString() -> __tostring()
if (name_len == 8 && strcmp(name, "toString") == 0) {
method_name = ZEND_TOSTRING_FUNC_NAME;
method_name_len = sizeof(ZEND_TOSTRING_FUNC_NAME) - 1;
}
bool is_constructor = (name_len == 11 && strcmp(name, "constructor") == 0);
bool is_magic_call = (method_name_len == 6 && strcmp(method_name, "__call") == 0);
if (is_constructor ||
(name[0] != '$' /* leading '$' means property, not method */ &&
zend_hash_find(&ce->function_table, method_name, method_name_len + 1, (void**)&method_ptr) == SUCCESS &&
((method_ptr->common.fn_flags & ZEND_ACC_PUBLIC) != 0) && /* Allow only public methods */
((method_ptr->common.fn_flags & (ZEND_ACC_CTOR|ZEND_ACC_DTOR|ZEND_ACC_CLONE)) == 0) /* no __construct, __destruct(), or __clone() functions */
) || (method_ptr=NULL, is_magic_call)
) {
if (callback_type == V8JS_PROP_GETTER) {
if (is_constructor) {
// Don't set a return value here, i.e. indicate that we don't
// have a special value. V8 "knows" the constructor anyways
// (from the template) and will use that.
} else {
if (is_magic_call && method_ptr==NULL) {
// Fake __call implementation
// (only use this if method_ptr==NULL, which means
// there is no actual PHP __call() implementation)
v8::Local<v8::FunctionTemplate> ft;
try {
ft = v8::Local<v8::FunctionTemplate>::New
(isolate, ctx->call_impls.at(tmpl_ptr));
}
catch (const std::out_of_range &) {
ft = v8::FunctionTemplate::New(isolate,
v8js_fake_call_impl, V8JS_NULL,
v8::Signature::New(isolate, tmpl));
v8js_tmpl_t *persistent_ft = &ctx->call_impls[tmpl_ptr];
persistent_ft->Reset(isolate, ft);
}
v8::Local<v8::Function> cb = ft->GetFunction();
cb->SetName(property);
ret_value = cb;
} else {
v8::Local<v8::FunctionTemplate> ft;
try {
ft = v8::Local<v8::FunctionTemplate>::New
(isolate, ctx->method_tmpls.at(method_ptr));
}
catch (const std::out_of_range &) {
ft = v8::FunctionTemplate::New(isolate, v8js_php_callback,
v8::External::New((isolate), method_ptr),
v8::Signature::New((isolate), tmpl));
v8js_tmpl_t *persistent_ft = &ctx->method_tmpls[method_ptr];
persistent_ft->Reset(isolate, ft);
}
ret_value = ft->GetFunction();
}
}
} else if (callback_type == V8JS_PROP_QUERY) {
// methods are not enumerable
ret_value = V8JS_UINT(v8::ReadOnly|v8::DontEnum|v8::DontDelete);
} else if (callback_type == V8JS_PROP_SETTER) {
ret_value = set_value; // lie. this field is read-only.
} else if (callback_type == V8JS_PROP_DELETER) {
ret_value = V8JS_BOOL(false);
} else {
/* shouldn't reach here! but bail safely */
ret_value = v8::Handle<v8::Value>();
}
} else {
if (name[0]=='$') {
// this is a property (not a method)
name++; name_len--;
}
if (callback_type == V8JS_PROP_GETTER) {
/* Nope, not a method -- must be a (case-sensitive) property */
zval zname;
INIT_ZVAL(zname);
ZVAL_STRINGL(&zname, name, name_len, 0);
zend_property_info *property_info = zend_get_property_info(ce, &zname, 1 TSRMLS_CC);
if(property_info && property_info->flags & ZEND_ACC_PUBLIC) {
php_value = zend_read_property(NULL, object, V8JS_CONST name, name_len, true TSRMLS_CC);
// special case uninitialized_zval_ptr and return an empty value
// (indicating that we don't intercept this property) if the
// property doesn't exist.
if (php_value == EG(uninitialized_zval_ptr)) {
ret_value = v8::Handle<v8::Value>();
} else {
// wrap it
ret_value = zval_to_v8js(php_value, isolate TSRMLS_CC);
/* We don't own the reference to php_value... unless the
* returned refcount was 0, in which case the below code
* will free it. */
zval_add_ref(&php_value);
zval_ptr_dtor(&php_value);
}
}
else if (zend_hash_find(&ce->function_table, "__get", 6, (void**)&method_ptr) == SUCCESS
/* Allow only public methods */
&& ((method_ptr->common.fn_flags & ZEND_ACC_PUBLIC) != 0)) {
/* Okay, let's call __get. */
zend_fcall_info fci;
zval fmember;
INIT_ZVAL(fmember);
ZVAL_STRING(&fmember, "__get", 0);
fci.size = sizeof(fci);
fci.function_table = &ce->function_table;
fci.function_name = &fmember;
fci.symbol_table = NULL;
fci.retval_ptr_ptr = &php_value;
zval *zname_ptr = &zname;
zval **zname_ptr_ptr = &zname_ptr;
fci.param_count = 1;
fci.params = &zname_ptr_ptr;
fci.object_ptr = object;
fci.no_separation = 0;
zend_call_function(&fci, NULL TSRMLS_CC);
ret_value = zval_to_v8js(php_value, isolate TSRMLS_CC);
zval_ptr_dtor(&php_value);
}
} else if (callback_type == V8JS_PROP_SETTER) {
MAKE_STD_ZVAL(php_value);
if (v8js_to_zval(set_value, php_value, ctx->flags, isolate TSRMLS_CC) != SUCCESS) {
ret_value = v8::Handle<v8::Value>();
}
else {
zval zname;
INIT_ZVAL(zname);
ZVAL_STRINGL(&zname, name, name_len, 0);
zend_property_info *property_info = zend_get_property_info(ce, &zname, 1 TSRMLS_CC);
if(property_info && property_info->flags & ZEND_ACC_PUBLIC) {
zend_update_property(scope, object, V8JS_CONST name, name_len, php_value TSRMLS_CC);
ret_value = set_value;
}
else if (zend_hash_find(&ce->function_table, "__set", 6, (void**)&method_ptr) == SUCCESS
/* Allow only public methods */
&& ((method_ptr->common.fn_flags & ZEND_ACC_PUBLIC) != 0)) {
/* Okay, let's call __set. */
zend_fcall_info fci;
zval fmember;
INIT_ZVAL(fmember);
ZVAL_STRING(&fmember, "__set", 0);
zval *php_ret_value;
fci.size = sizeof(fci);
fci.function_table = &ce->function_table;
fci.function_name = &fmember;
fci.symbol_table = NULL;
fci.retval_ptr_ptr = &php_ret_value;
zval *zname_ptr = &zname;
zval **params[2];
fci.param_count = 2;
fci.params = params;
fci.params[0] = &zname_ptr;
fci.params[1] = &php_value;
fci.object_ptr = object;
fci.no_separation = 1;
zend_call_function(&fci, NULL TSRMLS_CC);
ret_value = zval_to_v8js(php_ret_value, isolate TSRMLS_CC);
zval_ptr_dtor(&php_ret_value);
}
}
// if PHP wanted to hold on to this value, update_property would
// have bumped the refcount
zval_ptr_dtor(&php_value);
} else if (callback_type == V8JS_PROP_QUERY ||
callback_type == V8JS_PROP_DELETER) {
const zend_object_handlers *h = Z_OBJ_HT_P(object);
zval *prop;
MAKE_STD_ZVAL(prop);
ZVAL_STRINGL(prop, name, name_len, 1);
if (callback_type == V8JS_PROP_QUERY) {
if (h->has_property(object, prop, 0 ZEND_HASH_KEY_NULL TSRMLS_CC)) {
ret_value = V8JS_UINT(v8::None);
} else {
ret_value = v8::Handle<v8::Value>(); // empty handle
}
} else {
zend_property_info *property_info = zend_get_property_info(ce, prop, 1 TSRMLS_CC);
if(property_info && property_info->flags & ZEND_ACC_PUBLIC) {
h->unset_property(object, prop ZEND_HASH_KEY_NULL TSRMLS_CC);
ret_value = V8JS_BOOL(true);
}
else {
ret_value = v8::Handle<v8::Value>(); // empty handle
}
}
zval_ptr_dtor(&prop);
} else {
/* shouldn't reach here! but bail safely */
ret_value = v8::Handle<v8::Value>();
}
}
efree(lower);
return ret_value;
}
/* }}} */
static void v8js_named_property_getter(v8::Local<v8::String> property, const v8::PropertyCallbackInfo<v8::Value> &info) /* {{{ */
{
info.GetReturnValue().Set(v8js_named_property_callback(property, info, V8JS_PROP_GETTER));
}
/* }}} */
static void v8js_named_property_setter(v8::Local<v8::String> property, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<v8::Value> &info) /* {{{ */
{
info.GetReturnValue().Set(v8js_named_property_callback(property, info, V8JS_PROP_SETTER, value));
}
/* }}} */
static void v8js_named_property_query(v8::Local<v8::String> property, const v8::PropertyCallbackInfo<v8::Integer> &info) /* {{{ */
{
v8::Local<v8::Value> r = v8js_named_property_callback(property, info, V8JS_PROP_QUERY);
if (!r.IsEmpty()) {
info.GetReturnValue().Set(r->ToInteger());
}
}
/* }}} */
static void v8js_named_property_deleter(v8::Local<v8::String> property, const v8::PropertyCallbackInfo<v8::Boolean> &info) /* {{{ */
{
v8::Local<v8::Value> r = v8js_named_property_callback(property, info, V8JS_PROP_DELETER);
if (!r.IsEmpty()) {
info.GetReturnValue().Set(r->ToBoolean());
}
}
/* }}} */
static v8::Handle<v8::Object> v8js_wrap_object(v8::Isolate *isolate, zend_class_entry *ce, zval *value TSRMLS_DC) /* {{{ */
{
v8js_ctx *ctx = (v8js_ctx *) isolate->GetData(0);
v8::Local<v8::FunctionTemplate> new_tpl;
v8js_tmpl_t *persist_tpl_;
try {
new_tpl = v8::Local<v8::FunctionTemplate>::New
(isolate, ctx->template_cache.at(ce->name));
}
catch (const std::out_of_range &) {
/* No cached v8::FunctionTemplate available as of yet, create one. */
new_tpl = v8::FunctionTemplate::New(isolate, 0);
new_tpl->SetClassName(V8JS_STRL(ce->name, ce->name_length));
new_tpl->InstanceTemplate()->SetInternalFieldCount(1);
if (ce == zend_ce_closure) {
/* Got a closure, mustn't cache ... */
persist_tpl_ = new v8js_tmpl_t(isolate, new_tpl);
/* We'll free persist_tpl_ via v8js_weak_closure_callback, below */
new_tpl->InstanceTemplate()->SetCallAsFunctionHandler(v8js_php_callback);
} else {
/* Add new v8::FunctionTemplate to tpl_map, as long as it is not a closure. */
persist_tpl_ = &ctx->template_cache[ce->name];
persist_tpl_->Reset(isolate, new_tpl);
/* We'll free persist_tpl_ when template_cache is destroyed */
v8::Local<v8::ObjectTemplate> inst_tpl = new_tpl->InstanceTemplate();
v8::NamedPropertyGetterCallback getter = v8js_named_property_getter;
v8::NamedPropertyEnumeratorCallback enumerator = v8js_named_property_enumerator;
/* Check for ArrayAccess object */
if (V8JSG(use_array_access) && ce) {
bool has_array_access = false;
bool has_countable = false;
for (int i = 0; i < ce->num_interfaces; i ++) {
if (strcmp (ce->interfaces[i]->name, "ArrayAccess") == 0) {
has_array_access = true;
}
else if (strcmp (ce->interfaces[i]->name, "Countable") == 0) {
has_countable = true;
}
}
if(has_array_access && has_countable) {
inst_tpl->SetIndexedPropertyHandler(v8js_array_access_getter,
v8js_array_access_setter,
v8js_array_access_query,
v8js_array_access_deleter,
v8js_array_access_enumerator);
/* Switch to special ArrayAccess getter, which falls back to
* v8js_named_property_getter, but possibly bridges the
* call to Array.prototype functions. */
getter = v8js_array_access_named_getter;
/* Overwrite enumerator, since for(... in ...) loop should
* not see the methods but iterate over the elements. */
enumerator = 0;
}
}
// Finish setup of new_tpl
inst_tpl->SetNamedPropertyHandler
(getter, /* getter */
v8js_named_property_setter, /* setter */
v8js_named_property_query, /* query */
v8js_named_property_deleter, /* deleter */
enumerator, /* enumerator */
V8JS_NULL /* data */
);
// add __invoke() handler
zend_function *invoke_method_ptr;
if (zend_hash_find(&ce->function_table, ZEND_INVOKE_FUNC_NAME,
sizeof(ZEND_INVOKE_FUNC_NAME),
(void**)&invoke_method_ptr) == SUCCESS &&
invoke_method_ptr->common.fn_flags & ZEND_ACC_PUBLIC) {
new_tpl->InstanceTemplate()->SetCallAsFunctionHandler(v8js_invoke_callback, PHP_V8JS_CALLBACK(isolate, invoke_method_ptr, new_tpl));
}
}
v8::Local<v8::Array> call_handler_data = v8::Array::New(isolate, 2);
call_handler_data->Set(0, v8::External::New(isolate, persist_tpl_));
call_handler_data->Set(1, v8::External::New(isolate, ce));
new_tpl->SetCallHandler(v8js_construct_callback, call_handler_data);
}
// Create v8 wrapper object
v8::Handle<v8::Value> external = v8::External::New(isolate, value);
v8::Handle<v8::Object> newobj = new_tpl->GetFunction()->NewInstance(1, &external);
if (ce == zend_ce_closure) {
// free uncached function template when object is freed
ctx->weak_closures[persist_tpl_].Reset(isolate, newobj);
ctx->weak_closures[persist_tpl_].SetWeak(persist_tpl_, v8js_weak_closure_callback);
}
return newobj;
}
/* }}} */
static v8::Handle<v8::Object> v8js_wrap_array_to_object(v8::Isolate *isolate, zval *value TSRMLS_DC) /* {{{ */
{
int i;
HashPosition pos;
char *key = NULL;
uint key_len;
ulong index;
v8js_ctx *ctx = (v8js_ctx *) isolate->GetData(0);
v8::Local<v8::FunctionTemplate> new_tpl;
if(ctx->array_tmpl.IsEmpty()) {
new_tpl = v8::FunctionTemplate::New(isolate, 0);
/* Call it Array, but it is not a native array, especially it doesn't have
* have the typical Array.prototype functions. */
new_tpl->SetClassName(V8JS_SYM("Array"));
/* Store for later re-use */
ctx->array_tmpl.Reset(isolate, new_tpl);
}
else {
new_tpl = v8::Local<v8::FunctionTemplate>::New(isolate, ctx->array_tmpl);
}
v8::Handle<v8::Object> newobj = new_tpl->InstanceTemplate()->NewInstance();
HashTable *myht = HASH_OF(value);
i = myht ? zend_hash_num_elements(myht) : 0;
if (i > 0)
{
zval **data;
HashTable *tmp_ht;
zend_hash_internal_pointer_reset_ex(myht, &pos);
for (;; zend_hash_move_forward_ex(myht, &pos)) {
i = zend_hash_get_current_key_ex(myht, &key, &key_len, &index, 0, &pos);
if (i == HASH_KEY_NON_EXISTANT)
break;
if (zend_hash_get_current_data_ex(myht, (void **) &data, &pos) == SUCCESS)
{
tmp_ht = HASH_OF(*data);
if (tmp_ht) {
tmp_ht->nApplyCount++;
}
if (i == HASH_KEY_IS_STRING)
{
if (key[0] == '\0' && Z_TYPE_P(value) == IS_OBJECT) {
/* Skip protected and private members. */
if (tmp_ht) {
tmp_ht->nApplyCount--;
}
continue;
}
newobj->Set(V8JS_STRL(key, key_len - 1), zval_to_v8js(*data, isolate TSRMLS_CC));
} else {
newobj->Set(index, zval_to_v8js(*data, isolate TSRMLS_CC));
}
if (tmp_ht) {
tmp_ht->nApplyCount--;
}
}
}
}
return newobj;
}
/* }}} */
v8::Handle<v8::Value> v8js_hash_to_jsobj(zval *value, v8::Isolate *isolate TSRMLS_DC) /* {{{ */
{
HashTable *myht;
zend_class_entry *ce = NULL;
if (Z_TYPE_P(value) == IS_ARRAY) {
myht = HASH_OF(value);
} else {
myht = Z_OBJPROP_P(value);
ce = Z_OBJCE_P(value);
}
/* Prevent recursion */
if (myht && myht->nApplyCount > 1) {
return V8JS_NULL;
}
/* Special case, passing back object originating from JS to JS */
if (ce == php_ce_v8function || ce == php_ce_v8object) {
v8js_v8object *c = (v8js_v8object *) zend_object_store_get_object(value TSRMLS_CC);
if(isolate != c->ctx->isolate) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "V8Function object passed to wrong V8Js instance");
return V8JS_NULL;
}
return v8::Local<v8::Value>::New(isolate, c->v8obj);
}
/* If it's a PHP object, wrap it */
if (ce) {
return v8js_wrap_object(isolate, ce, value TSRMLS_CC);
}
/* Associative PHP arrays cannot be wrapped to JS arrays, convert them to
* JS objects and attach all their array keys as properties. */
return v8js_wrap_array_to_object(isolate, value TSRMLS_CC);
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: noet sw=4 ts=4
*/
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