// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stdint.h>
#include "base/functional/bind.h"
#include "base/test/test_timeouts.h"
#include "base/time/time.h"
#include "ppapi/c/dev/ppb_var_deprecated.h"
#include "ppapi/c/dev/ppp_class_deprecated.h"
#include "ppapi/c/pp_var.h"
#include "ppapi/c/ppb_var.h"
#include "ppapi/c/ppp_instance.h"
#include "ppapi/c/private/ppp_instance_private.h"
#include "ppapi/proxy/host_dispatcher.h"
#include "ppapi/proxy/interface_list.h"
#include "ppapi/proxy/ppapi_proxy_test.h"
#include "ppapi/shared_impl/ppapi_permissions.h"
#include "ppapi/shared_impl/ppb_var_shared.h"
#include "ppapi/shared_impl/var.h"
namespace ppapi {
// A fake version of V8ObjectVar for testing.
class V8ObjectVar : public ppapi::Var {
public:
V8ObjectVar(const PPP_Class_Deprecated* ppp_class, void* ppp_class_data)
: ppp_class_(ppp_class), ppp_class_data_(ppp_class_data) {}
~V8ObjectVar() override { ppp_class_->Deallocate(ppp_class_data_); }
// Var overrides.
V8ObjectVar* AsV8ObjectVar() override { return this; }
PP_VarType GetType() const override { return PP_VARTYPE_OBJECT; }
private:
const PPP_Class_Deprecated* ppp_class_;
void* ppp_class_data_;
};
namespace proxy {
namespace {
const PP_Instance kInstance = 0xdeadbeef;
PP_Var GetPPVarNoAddRef(Var* var) {
PP_Var var_to_return = var->GetPPVar();
PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(var_to_return);
return var_to_return;
}
PluginDispatcher* plugin_dispatcher = NULL;
// Return the plugin-side proxy for PPB_Var_Deprecated.
const PPB_Var_Deprecated* plugin_var_deprecated_if() {
// The test code must set the plugin dispatcher.
CHECK(plugin_dispatcher);
// Grab the plugin-side proxy for PPB_Var_Deprecated (for CreateObject).
return static_cast<const PPB_Var_Deprecated*>(
plugin_dispatcher->GetBrowserInterface(
PPB_VAR_DEPRECATED_INTERFACE));
}
// Mock PPP_Instance_Private.
PP_Var instance_obj;
PP_Var GetInstanceObject(PP_Instance /*instance*/) {
// The 1 ref we got from CreateObject will be passed to the host. We want to
// have a ref of our own.
printf("GetInstanceObject called\n");
plugin_var_deprecated_if()->AddRef(instance_obj);
return instance_obj;
}
PPP_Instance_Private ppp_instance_private_mock = {
&GetInstanceObject
};
// We need to pass in a |PPP_Class_Deprecated| to
// |PPB_Var_Deprecated->CreateObject| for a mock |Deallocate| method.
void Deallocate(void* object) {
}
const PPP_Class_Deprecated ppp_class_deprecated_mock = {
NULL, // HasProperty
NULL, // HasMethod
NULL, // GetProperty
NULL, // GetAllPropertyNames
NULL, // SetProperty
NULL, // RemoveProperty
NULL, // Call
NULL, // Construct
&Deallocate
};
// We need to mock PPP_Instance, so that we can create and destroy the pretend
// instance that PPP_Instance_Private uses.
PP_Bool DidCreate(PP_Instance /*instance*/, uint32_t /*argc*/,
const char* /*argn*/[], const char* /*argv*/[]) {
// Create an object var. This should exercise the typical path for creating
// instance objects.
instance_obj =
plugin_var_deprecated_if()->CreateObject(kInstance,
&ppp_class_deprecated_mock,
NULL);
return PP_TRUE;
}
void DidDestroy(PP_Instance /*instance*/) {
// Decrement the reference count for our instance object. It should be
// deleted.
plugin_var_deprecated_if()->Release(instance_obj);
}
PPP_Instance_1_0 ppp_instance_mock = { &DidCreate, &DidDestroy };
// Mock PPB_Var_Deprecated, so that we can emulate creating an Object Var.
PP_Var CreateObject(PP_Instance /*instance*/,
const PPP_Class_Deprecated* ppp_class,
void* ppp_class_data) {
V8ObjectVar* obj_var = new V8ObjectVar(ppp_class, ppp_class_data);
return obj_var->GetPPVar();
}
const PPB_Var_Deprecated ppb_var_deprecated_mock = {
PPB_Var_Shared::GetVarInterface1_0()->AddRef,
PPB_Var_Shared::GetVarInterface1_0()->Release,
PPB_Var_Shared::GetVarInterface1_0()->VarFromUtf8,
PPB_Var_Shared::GetVarInterface1_0()->VarToUtf8,
NULL, // HasProperty
NULL, // HasMethod
NULL, // GetProperty
NULL, // EnumerateProperties
NULL, // SetProperty
NULL, // RemoveProperty
NULL, // Call
NULL, // Construct
NULL, // IsInstanceOf
&CreateObject
};
class PPP_Instance_Private_ProxyTest : public TwoWayTest {
public:
PPP_Instance_Private_ProxyTest()
: TwoWayTest(TwoWayTest::TEST_PPP_INTERFACE) {
plugin().RegisterTestInterface(PPP_INSTANCE_PRIVATE_INTERFACE,
&ppp_instance_private_mock);
plugin().RegisterTestInterface(PPP_INSTANCE_INTERFACE_1_0,
&ppp_instance_mock);
host().RegisterTestInterface(PPB_VAR_DEPRECATED_INTERFACE,
&ppb_var_deprecated_mock);
}
};
} // namespace
TEST_F(PPP_Instance_Private_ProxyTest, PPPInstancePrivate) {
// This test controls its own instance; we can't use the one that
// PluginProxyTestHarness provides.
ASSERT_NE(kInstance, pp_instance());
HostDispatcher::SetForInstance(kInstance, host().host_dispatcher());
// Requires dev interfaces.
InterfaceList::SetProcessGlobalPermissions(
PpapiPermissions::AllPermissions());
// This file-local global is used by the PPP_Instance mock above in order to
// access PPB_Var_Deprecated.
plugin_dispatcher = plugin().plugin_dispatcher();
// Grab the host-side proxy for PPP_Instance and PPP_Instance_Private.
const PPP_Instance_Private* ppp_instance_private =
static_cast<const PPP_Instance_Private*>(
host().host_dispatcher()->GetProxiedInterface(
PPP_INSTANCE_PRIVATE_INTERFACE));
const PPP_Instance_1_1* ppp_instance = static_cast<const PPP_Instance_1_1*>(
host().host_dispatcher()->GetProxiedInterface(
PPP_INSTANCE_INTERFACE_1_1));
// Initialize an Instance, so that the plugin-side machinery will work
// properly.
EXPECT_EQ(PP_TRUE, ppp_instance->DidCreate(kInstance, 0, NULL, NULL));
// Check the plugin-side reference count.
EXPECT_EQ(1, plugin().var_tracker().GetRefCountForObject(instance_obj));
// Check the host-side var exists with the expected id and has 1 refcount (the
// refcount on behalf of the plugin).
int32_t expected_host_id =
plugin().var_tracker().GetHostObject(instance_obj).value.as_id;
Var* host_var = host().var_tracker().GetVar(expected_host_id);
ASSERT_TRUE(host_var);
EXPECT_EQ(
1,
host().var_tracker().GetRefCountForObject(GetPPVarNoAddRef(host_var)));
// Call from the browser side to get the instance object.
PP_Var host_pp_var = ppp_instance_private->GetInstanceObject(kInstance);
EXPECT_EQ(instance_obj.type, host_pp_var.type);
EXPECT_EQ(host_pp_var.value.as_id, expected_host_id);
EXPECT_EQ(1, plugin().var_tracker().GetRefCountForObject(instance_obj));
// A reference is passed to the browser, which we consume here.
host().var_tracker().ReleaseVar(host_pp_var);
EXPECT_EQ(1, host().var_tracker().GetRefCountForObject(host_pp_var));
// The plugin is going away; generally, so will all references to its instance
// object.
host().var_tracker().ReleaseVar(host_pp_var);
// Destroy the instance. DidDestroy above decrements the reference count for
// instance_obj, so it should also be destroyed.
ppp_instance->DidDestroy(kInstance);
EXPECT_EQ(-1, plugin().var_tracker().GetRefCountForObject(instance_obj));
EXPECT_EQ(-1, host().var_tracker().GetRefCountForObject(host_pp_var));
}
} // namespace proxy
} // namespace ppapi
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