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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "webkit/plugins/ppapi/plugin_module.h"
#include <set>
#include "base/bind.h"
#include "base/command_line.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "base/message_loop.h"
#include "base/message_loop_proxy.h"
#include "base/time.h"
#include "ppapi/c/dev/ppb_audio_input_dev.h"
#include "ppapi/c/dev/ppb_buffer_dev.h"
#include "ppapi/c/dev/ppb_char_set_dev.h"
#include "ppapi/c/dev/ppb_crypto_dev.h"
#include "ppapi/c/dev/ppb_cursor_control_dev.h"
#include "ppapi/c/dev/ppb_device_ref_dev.h"
#include "ppapi/c/dev/ppb_file_chooser_dev.h"
#include "ppapi/c/dev/ppb_find_dev.h"
#include "ppapi/c/dev/ppb_font_dev.h"
#include "ppapi/c/dev/ppb_gles_chromium_texture_mapping_dev.h"
#include "ppapi/c/dev/ppb_graphics_2d_dev.h"
#include "ppapi/c/dev/ppb_memory_dev.h"
#include "ppapi/c/dev/ppb_opengles2ext_dev.h"
#include "ppapi/c/dev/ppb_printing_dev.h"
#include "ppapi/c/dev/ppb_resource_array_dev.h"
#include "ppapi/c/dev/ppb_scrollbar_dev.h"
#include "ppapi/c/dev/ppb_testing_dev.h"
#include "ppapi/c/dev/ppb_text_input_dev.h"
#include "ppapi/c/dev/ppb_trace_event_dev.h"
#include "ppapi/c/dev/ppb_truetype_font_dev.h"
#include "ppapi/c/dev/ppb_url_util_dev.h"
#include "ppapi/c/dev/ppb_var_array_dev.h"
#include "ppapi/c/dev/ppb_var_deprecated.h"
#include "ppapi/c/dev/ppb_var_dictionary_dev.h"
#include "ppapi/c/dev/ppb_video_capture_dev.h"
#include "ppapi/c/dev/ppb_video_decoder_dev.h"
#include "ppapi/c/dev/ppb_view_dev.h"
#include "ppapi/c/dev/ppb_widget_dev.h"
#include "ppapi/c/dev/ppb_zoom_dev.h"
#include "ppapi/c/extensions/dev/ppb_ext_alarms_dev.h"
#include "ppapi/c/extensions/dev/ppb_ext_socket_dev.h"
#include "ppapi/c/pp_module.h"
#include "ppapi/c/pp_resource.h"
#include "ppapi/c/pp_var.h"
#include "ppapi/c/ppb_audio.h"
#include "ppapi/c/ppb_audio_config.h"
#include "ppapi/c/ppb_console.h"
#include "ppapi/c/ppb_core.h"
#include "ppapi/c/ppb_file_io.h"
#include "ppapi/c/ppb_file_ref.h"
#include "ppapi/c/ppb_file_system.h"
#include "ppapi/c/ppb_fullscreen.h"
#include "ppapi/c/ppb_graphics_2d.h"
#include "ppapi/c/ppb_graphics_3d.h"
#include "ppapi/c/ppb_image_data.h"
#include "ppapi/c/ppb_instance.h"
#include "ppapi/c/ppb_messaging.h"
#include "ppapi/c/ppb_mouse_cursor.h"
#include "ppapi/c/ppb_mouse_lock.h"
#include "ppapi/c/ppb_opengles2.h"
#include "ppapi/c/ppb_url_loader.h"
#include "ppapi/c/ppb_url_request_info.h"
#include "ppapi/c/ppb_url_response_info.h"
#include "ppapi/c/ppb_var.h"
#include "ppapi/c/ppb_var_array_buffer.h"
#include "ppapi/c/ppb_view.h"
#include "ppapi/c/ppp.h"
#include "ppapi/c/ppp_instance.h"
#include "ppapi/c/private/ppb_ext_crx_file_system_private.h"
#include "ppapi/c/private/ppb_file_io_private.h"
#include "ppapi/c/private/ppb_file_ref_private.h"
#include "ppapi/c/private/ppb_flash.h"
#include "ppapi/c/private/ppb_flash_clipboard.h"
#include "ppapi/c/private/ppb_flash_device_id.h"
#include "ppapi/c/private/ppb_flash_drm.h"
#include "ppapi/c/private/ppb_flash_file.h"
#include "ppapi/c/private/ppb_flash_font_file.h"
#include "ppapi/c/private/ppb_flash_fullscreen.h"
#include "ppapi/c/private/ppb_flash_menu.h"
#include "ppapi/c/private/ppb_flash_message_loop.h"
#include "ppapi/c/private/ppb_flash_print.h"
#include "ppapi/c/private/ppb_gpu_blacklist_private.h"
#include "ppapi/c/private/ppb_host_resolver_private.h"
#include "ppapi/c/private/ppb_instance_private.h"
#include "ppapi/c/private/ppb_network_list_private.h"
#include "ppapi/c/private/ppb_network_monitor_private.h"
#include "ppapi/c/private/ppb_pdf.h"
#include "ppapi/c/private/ppb_proxy_private.h"
#include "ppapi/c/private/ppb_talk_private.h"
#include "ppapi/c/private/ppb_tcp_server_socket_private.h"
#include "ppapi/c/private/ppb_tcp_socket_private.h"
#include "ppapi/c/private/ppb_udp_socket_private.h"
#include "ppapi/c/private/ppb_uma_private.h"
#include "ppapi/c/private/ppb_video_destination_private.h"
#include "ppapi/c/private/ppb_video_source_private.h"
#include "ppapi/c/private/ppb_x509_certificate_private.h"
#include "ppapi/c/trusted/ppb_broker_trusted.h"
#include "ppapi/c/trusted/ppb_browser_font_trusted.h"
#include "ppapi/c/trusted/ppb_char_set_trusted.h"
#include "ppapi/c/trusted/ppb_file_chooser_trusted.h"
#include "ppapi/c/trusted/ppb_file_io_trusted.h"
#include "ppapi/c/trusted/ppb_url_loader_trusted.h"
#include "ppapi/shared_impl/callback_tracker.h"
#include "ppapi/shared_impl/ppapi_switches.h"
#include "ppapi/shared_impl/ppb_input_event_shared.h"
#include "ppapi/shared_impl/ppb_opengles2_shared.h"
#include "ppapi/shared_impl/ppb_var_shared.h"
#include "ppapi/shared_impl/time_conversion.h"
#include "ppapi/thunk/enter.h"
#include "ppapi/thunk/ppb_graphics_2d_api.h"
#include "ppapi/thunk/thunk.h"
#include "webkit/plugins/plugin_switches.h"
#include "webkit/plugins/ppapi/common.h"
#include "webkit/plugins/ppapi/host_globals.h"
#include "webkit/plugins/ppapi/ppapi_interface_factory.h"
#include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
#include "webkit/plugins/ppapi/ppb_gpu_blacklist_private_impl.h"
#include "webkit/plugins/ppapi/ppb_image_data_impl.h"
#include "webkit/plugins/ppapi/ppb_proxy_impl.h"
#include "webkit/plugins/ppapi/ppb_scrollbar_impl.h"
#include "webkit/plugins/ppapi/ppb_uma_private_impl.h"
#include "webkit/plugins/ppapi/ppb_var_deprecated_impl.h"
#include "webkit/plugins/ppapi/ppb_video_decoder_impl.h"
using ppapi::InputEventData;
using ppapi::PpapiGlobals;
using ppapi::TimeTicksToPPTimeTicks;
using ppapi::TimeToPPTime;
using ppapi::thunk::EnterResource;
using ppapi::thunk::PPB_Graphics2D_API;
using ppapi::thunk::PPB_InputEvent_API;
namespace webkit {
namespace ppapi {
namespace {
// Global tracking info for PPAPI plugins. This is lazily created before the
// first plugin is allocated, and leaked on shutdown.
//
// Note that we don't want a Singleton here since destroying this object will
// try to free some stuff that requires WebKit, and Singletons are destroyed
// after WebKit.
// TODO(raymes): I'm not sure if it is completely necessary to leak the
// HostGlobals. Figure out the shutdown sequence and find a way to do this
// more elegantly.
webkit::ppapi::HostGlobals* host_globals = NULL;
// Maintains all currently loaded plugin libs for validating PP_Module
// identifiers.
typedef std::set<PluginModule*> PluginModuleSet;
PluginModuleSet* GetLivePluginSet() {
CR_DEFINE_STATIC_LOCAL(PluginModuleSet, live_plugin_libs, ());
return &live_plugin_libs;
}
// PPB_Core --------------------------------------------------------------------
void AddRefResource(PP_Resource resource) {
PpapiGlobals::Get()->GetResourceTracker()->AddRefResource(resource);
}
void ReleaseResource(PP_Resource resource) {
PpapiGlobals::Get()->GetResourceTracker()->ReleaseResource(resource);
}
PP_Time GetTime() {
return TimeToPPTime(base::Time::Now());
}
PP_TimeTicks GetTickTime() {
return TimeTicksToPPTimeTicks(base::TimeTicks::Now());
}
void CallOnMainThread(int delay_in_msec,
PP_CompletionCallback callback,
int32_t result) {
if (callback.func) {
PpapiGlobals::Get()->GetMainThreadMessageLoop()->PostDelayedTask(
FROM_HERE,
base::Bind(callback.func, callback.user_data, result),
base::TimeDelta::FromMilliseconds(delay_in_msec));
}
}
PP_Bool IsMainThread() {
return BoolToPPBool(PpapiGlobals::Get()->
GetMainThreadMessageLoop()->BelongsToCurrentThread());
}
const PPB_Core core_interface = {
&AddRefResource,
&ReleaseResource,
&GetTime,
&GetTickTime,
&CallOnMainThread,
&IsMainThread
};
// PPB_Testing -----------------------------------------------------------------
PP_Bool ReadImageData(PP_Resource device_context_2d,
PP_Resource image,
const PP_Point* top_left) {
EnterResource<PPB_Graphics2D_API> enter(device_context_2d, true);
if (enter.failed())
return PP_FALSE;
return BoolToPPBool(enter.object()->ReadImageData(image, top_left));
}
void RunMessageLoop(PP_Instance instance) {
base::MessageLoop::ScopedNestableTaskAllower allow(
base::MessageLoop::current());
base::MessageLoop::current()->Run();
}
void QuitMessageLoop(PP_Instance instance) {
base::MessageLoop::current()->QuitNow();
}
uint32_t GetLiveObjectsForInstance(PP_Instance instance_id) {
return HostGlobals::Get()->GetResourceTracker()->GetLiveObjectsForInstance(
instance_id);
}
PP_Bool IsOutOfProcess() {
return PP_FALSE;
}
void SimulateInputEvent(PP_Instance instance, PP_Resource input_event) {
PluginInstance* plugin_instance = host_globals->GetInstance(instance);
if (!plugin_instance)
return;
EnterResource<PPB_InputEvent_API> enter(input_event, false);
if (enter.failed())
return;
const InputEventData& input_event_data = enter.object()->GetInputEventData();
plugin_instance->SimulateInputEvent(input_event_data);
}
PP_Var GetDocumentURL(PP_Instance instance, PP_URLComponents_Dev* components) {
PluginInstance* plugin_instance = host_globals->GetInstance(instance);
if (!plugin_instance)
return PP_MakeUndefined();
return plugin_instance->GetDocumentURL(instance, components);
}
uint32_t GetLiveVars(PP_Var live_vars[], uint32_t array_size) {
std::vector<PP_Var> vars =
PpapiGlobals::Get()->GetVarTracker()->GetLiveVars();
for (size_t i = 0u;
i < std::min(static_cast<size_t>(array_size), vars.size());
++i)
live_vars[i] = vars[i];
return vars.size();
}
void SetMinimumArrayBufferSizeForShmem(PP_Instance /*instance*/,
uint32_t /*threshold*/) {
// Does nothing. Not needed in-process.
}
const PPB_Testing_Dev testing_interface = {
&ReadImageData,
&RunMessageLoop,
&QuitMessageLoop,
&GetLiveObjectsForInstance,
&IsOutOfProcess,
&SimulateInputEvent,
&GetDocumentURL,
&GetLiveVars,
&SetMinimumArrayBufferSizeForShmem
};
// GetInterface ----------------------------------------------------------------
const void* InternalGetInterface(const char* name) {
// Allow custom interface factories first stab at the GetInterface call.
const void* custom_interface =
PpapiInterfaceFactoryManager::GetInstance()->GetInterface(name);
if (custom_interface)
return custom_interface;
// TODO(brettw) put these in a hash map for better performance.
#define UNPROXIED_IFACE(api_name, iface_str, iface_struct) \
if (strcmp(name, iface_str) == 0) \
return ::ppapi::thunk::Get##iface_struct##_Thunk();
#define PROXIED_IFACE(api_name, iface_str, iface_struct) \
UNPROXIED_IFACE(api_name, iface_str, iface_struct)
#include "ppapi/thunk/interfaces_ppb_public_stable.h"
#include "ppapi/thunk/interfaces_ppb_public_dev.h"
#include "ppapi/thunk/interfaces_ppb_private.h"
#include "ppapi/thunk/interfaces_ppb_private_no_permissions.h"
#include "ppapi/thunk/interfaces_ppb_private_flash.h"
#undef UNPROXIED_API
#undef PROXIED_IFACE
#define LEGACY_IFACE(iface_str, function_name) \
if (strcmp(name, iface_str) == 0) \
return function_name;
#include "ppapi/thunk/interfaces_legacy.h"
#undef LEGACY_IFACE
// Only support the testing interface when the command line switch is
// specified. This allows us to prevent people from (ab)using this interface
// in production code.
if (CommandLine::ForCurrentProcess()->HasSwitch(
switches::kEnablePepperTesting)) {
if (strcmp(name, PPB_TESTING_DEV_INTERFACE) == 0 ||
strcmp(name, PPB_TESTING_DEV_INTERFACE_0_9) == 0) {
return &testing_interface;
}
}
return NULL;
}
const void* GetInterface(const char* name) {
// All interfaces should be used on the main thread.
CHECK(IsMainThread());
return InternalGetInterface(name);
}
// Gets the PPAPI entry points from the given library and places them into the
// given structure. Returns true on success.
bool LoadEntryPointsFromLibrary(const base::NativeLibrary& library,
PluginModule::EntryPoints* entry_points) {
entry_points->get_interface =
reinterpret_cast<PluginModule::GetInterfaceFunc>(
base::GetFunctionPointerFromNativeLibrary(library,
"PPP_GetInterface"));
if (!entry_points->get_interface) {
LOG(WARNING) << "No PPP_GetInterface in plugin library";
return false;
}
entry_points->initialize_module =
reinterpret_cast<PluginModule::PPP_InitializeModuleFunc>(
base::GetFunctionPointerFromNativeLibrary(library,
"PPP_InitializeModule"));
if (!entry_points->initialize_module) {
LOG(WARNING) << "No PPP_InitializeModule in plugin library";
return false;
}
// It's okay for PPP_ShutdownModule to not be defined and shutdown_module to
// be NULL.
entry_points->shutdown_module =
reinterpret_cast<PluginModule::PPP_ShutdownModuleFunc>(
base::GetFunctionPointerFromNativeLibrary(library,
"PPP_ShutdownModule"));
return true;
}
} // namespace
PluginModule::EntryPoints::EntryPoints()
: get_interface(NULL),
initialize_module(NULL),
shutdown_module(NULL) {
}
// PluginModule ----------------------------------------------------------------
PluginModule::PluginModule(const std::string& name,
const base::FilePath& path,
PluginDelegate::ModuleLifetime* lifetime_delegate,
const ::ppapi::PpapiPermissions& perms)
: lifetime_delegate_(lifetime_delegate),
callback_tracker_(new ::ppapi::CallbackTracker),
is_in_destructor_(false),
is_crashed_(false),
broker_(NULL),
library_(NULL),
name_(name),
path_(path),
permissions_(perms),
reserve_instance_id_(NULL) {
// Ensure the globals object is created.
if (!host_globals)
host_globals = new HostGlobals;
memset(&entry_points_, 0, sizeof(entry_points_));
pp_module_ = HostGlobals::Get()->AddModule(this);
GetLivePluginSet()->insert(this);
}
PluginModule::~PluginModule() {
// In the past there have been crashes reentering the plugin module
// destructor. Catch if that happens again earlier.
CHECK(!is_in_destructor_);
is_in_destructor_ = true;
// When the module is being deleted, there should be no more instances still
// holding a reference to us.
DCHECK(instances_.empty());
// Some resources and other stuff are hung off of the embedder state, which
// should be torn down before the routing stuff below.
embedder_state_.reset();
GetLivePluginSet()->erase(this);
callback_tracker_->AbortAll();
if (entry_points_.shutdown_module)
entry_points_.shutdown_module();
if (library_)
base::UnloadNativeLibrary(library_);
// Notifications that we've been deleted should be last.
HostGlobals::Get()->ModuleDeleted(pp_module_);
if (!is_crashed_ && lifetime_delegate_) {
// When the plugin crashes, we immediately tell the lifetime delegate that
// we're gone, so we don't want to tell it again.
lifetime_delegate_->PluginModuleDead(this);
}
// Don't add stuff here, the two notifications that the module object has
// been deleted should be last. This allows, for example,
// PPB_Proxy.IsInModuleDestructor to map PP_Module to this class during the
// previous parts of the destructor.
}
void PluginModule::SetEmbedderState(scoped_ptr<EmbedderState> state) {
embedder_state_ = state.Pass();
}
PluginModule::EmbedderState* PluginModule::GetEmbedderState() {
return embedder_state_.get();
}
bool PluginModule::InitAsInternalPlugin(const EntryPoints& entry_points) {
if (InitializeModule(entry_points)) {
entry_points_ = entry_points;
return true;
}
return false;
}
bool PluginModule::InitAsLibrary(const base::FilePath& path) {
base::NativeLibrary library = base::LoadNativeLibrary(path, NULL);
if (!library)
return false;
EntryPoints entry_points;
if (!LoadEntryPointsFromLibrary(library, &entry_points) ||
!InitializeModule(entry_points)) {
base::UnloadNativeLibrary(library);
return false;
}
entry_points_ = entry_points;
library_ = library;
return true;
}
void PluginModule::InitAsProxied(
PluginDelegate::OutOfProcessProxy* out_of_process_proxy) {
DCHECK(!out_of_process_proxy_.get());
out_of_process_proxy_.reset(out_of_process_proxy);
}
scoped_refptr<PluginModule> PluginModule::CreateModuleForNaClInstance() {
// Create a new module, but don't set the lifetime delegate. This isn't a
// plugin in the usual sense, so it isn't tracked by the browser.
scoped_refptr<PluginModule> nacl_module(
new PluginModule(name_,
path_,
NULL, // no lifetime_delegate
permissions_));
return nacl_module;
}
PP_NaClResult PluginModule::InitAsProxiedNaCl(PluginInstance* instance) {
DCHECK(out_of_process_proxy_.get());
// InitAsProxied (for the trusted/out-of-process case) initializes only the
// module, and one or more instances are added later. In this case, the
// PluginInstance was already created as in-process, so we missed the proxy
// AddInstance step and must do it now.
out_of_process_proxy_->AddInstance(instance->pp_instance());
// In NaCl, we need to tell the instance to reset itself as proxied. This will
// clear cached interface pointers and send DidCreate (etc) to the plugin
// side of the proxy.
return instance->ResetAsProxied(this);
}
bool PluginModule::IsProxied() const {
return !!out_of_process_proxy_;
}
base::ProcessId PluginModule::GetPeerProcessId() {
if (out_of_process_proxy_)
return out_of_process_proxy_->GetPeerProcessId();
return base::kNullProcessId;
}
int PluginModule::GetPluginChildId() {
if (out_of_process_proxy_)
return out_of_process_proxy_->GetPluginChildId();
return 0;
}
// static
const PPB_Core* PluginModule::GetCore() {
return &core_interface;
}
// static
PluginModule::GetInterfaceFunc PluginModule::GetLocalGetInterfaceFunc() {
return &GetInterface;
}
// static
bool PluginModule::SupportsInterface(const char* name) {
return !!InternalGetInterface(name);
}
PluginInstance* PluginModule::CreateInstance(
PluginDelegate* delegate,
WebKit::WebPluginContainer* container,
const GURL& plugin_url) {
PluginInstance* instance = PluginInstance::Create(delegate, this, container,
plugin_url);
if (!instance) {
LOG(WARNING) << "Plugin doesn't support instance interface, failing.";
return NULL;
}
if (out_of_process_proxy_)
out_of_process_proxy_->AddInstance(instance->pp_instance());
return instance;
}
PluginInstance* PluginModule::GetSomeInstance() const {
// This will generally crash later if there is not actually any instance to
// return, so we force a crash now to make bugs easier to track down.
CHECK(!instances_.empty());
return *instances_.begin();
}
const void* PluginModule::GetPluginInterface(const char* name) const {
if (out_of_process_proxy_)
return out_of_process_proxy_->GetProxiedInterface(name);
// In-process plugins.
if (!entry_points_.get_interface)
return NULL;
return entry_points_.get_interface(name);
}
void PluginModule::InstanceCreated(PluginInstance* instance) {
instances_.insert(instance);
}
void PluginModule::InstanceDeleted(PluginInstance* instance) {
if (out_of_process_proxy_)
out_of_process_proxy_->RemoveInstance(instance->pp_instance());
instances_.erase(instance);
}
scoped_refptr< ::ppapi::CallbackTracker> PluginModule::GetCallbackTracker() {
return callback_tracker_;
}
void PluginModule::PluginCrashed() {
DCHECK(!is_crashed_); // Should only get one notification.
is_crashed_ = true;
// Notify all instances that they crashed.
for (PluginInstanceSet::iterator i = instances_.begin();
i != instances_.end(); ++i)
(*i)->InstanceCrashed();
if (lifetime_delegate_)
lifetime_delegate_->PluginModuleDead(this);
}
void PluginModule::SetReserveInstanceIDCallback(
PP_Bool (*reserve)(PP_Module, PP_Instance)) {
DCHECK(!reserve_instance_id_) << "Only expect one set.";
reserve_instance_id_ = reserve;
}
bool PluginModule::ReserveInstanceID(PP_Instance instance) {
if (reserve_instance_id_)
return PPBoolToBool(reserve_instance_id_(pp_module_, instance));
return true; // Instance ID is usable.
}
void PluginModule::SetBroker(PluginDelegate::Broker* broker) {
DCHECK(!broker_ || !broker);
broker_ = broker;
}
PluginDelegate::Broker* PluginModule::GetBroker() {
return broker_;
}
// static
void PluginModule::ResetHostGlobalsForTest() {
delete host_globals;
host_globals = NULL;
}
bool PluginModule::InitializeModule(const EntryPoints& entry_points) {
DCHECK(!out_of_process_proxy_.get()) << "Don't call for proxied modules.";
DCHECK(entry_points.initialize_module != NULL);
int retval = entry_points.initialize_module(pp_module(), &GetInterface);
if (retval != 0) {
LOG(WARNING) << "PPP_InitializeModule returned failure " << retval;
return false;
}
return true;
}
} // namespace ppapi
} // namespace webkit
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