зеркало из https://github.com/mozilla/gecko-dev.git
456 строки
16 KiB
C++
456 строки
16 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: sw=4 ts=4 et :
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef dom_plugins_PluginModuleChild_h
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#define dom_plugins_PluginModuleChild_h 1
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#include "mozilla/Attributes.h"
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#include <string>
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#include <vector>
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#include "base/basictypes.h"
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#include "prlink.h"
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#include "npapi.h"
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#include "npfunctions.h"
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#include "nsAutoPtr.h"
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#include "nsDataHashtable.h"
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#include "nsTHashtable.h"
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#include "nsHashKeys.h"
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#ifdef MOZ_WIDGET_COCOA
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#include "PluginInterposeOSX.h"
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#endif
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#include "mozilla/plugins/PPluginModuleChild.h"
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#include "mozilla/plugins/PluginInstanceChild.h"
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#include "mozilla/plugins/PluginIdentifierChild.h"
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#include "mozilla/plugins/PluginMessageUtils.h"
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// NOTE: stolen from nsNPAPIPlugin.h
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#if defined(XP_WIN)
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#define NS_NPAPIPLUGIN_CALLBACK(_type, _name) _type (__stdcall * _name)
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#else
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#define NS_NPAPIPLUGIN_CALLBACK(_type, _name) _type (* _name)
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#endif
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typedef NS_NPAPIPLUGIN_CALLBACK(NPError, NP_GETENTRYPOINTS) (NPPluginFuncs* pCallbacks);
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typedef NS_NPAPIPLUGIN_CALLBACK(NPError, NP_PLUGININIT) (const NPNetscapeFuncs* pCallbacks);
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typedef NS_NPAPIPLUGIN_CALLBACK(NPError, NP_PLUGINUNIXINIT) (const NPNetscapeFuncs* pCallbacks, NPPluginFuncs* fCallbacks);
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typedef NS_NPAPIPLUGIN_CALLBACK(NPError, NP_PLUGINSHUTDOWN) (void);
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namespace mozilla {
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namespace dom {
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class PCrashReporterChild;
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}
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namespace plugins {
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#ifdef MOZ_WIDGET_QT
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class NestedLoopTimer;
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static const int kNestedLoopDetectorIntervalMs = 90;
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#endif
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class PluginScriptableObjectChild;
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class PluginInstanceChild;
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class PluginModuleChild : public PPluginModuleChild
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{
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typedef mozilla::dom::PCrashReporterChild PCrashReporterChild;
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protected:
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virtual mozilla::ipc::RacyInterruptPolicy
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MediateInterruptRace(const Message& parent, const Message& child) MOZ_OVERRIDE
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{
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return MediateRace(parent, child);
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}
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virtual bool ShouldContinueFromReplyTimeout() MOZ_OVERRIDE;
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// Implement the PPluginModuleChild interface
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virtual bool AnswerNP_GetEntryPoints(NPError* rv) MOZ_OVERRIDE;
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virtual bool AnswerNP_Initialize(const uint32_t& aFlags, NPError* rv) MOZ_OVERRIDE;
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virtual PPluginIdentifierChild*
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AllocPPluginIdentifierChild(const nsCString& aString,
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const int32_t& aInt,
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const bool& aTemporary) MOZ_OVERRIDE;
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virtual bool
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RecvPPluginIdentifierConstructor(PPluginIdentifierChild* actor,
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const nsCString& aString,
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const int32_t& aInt,
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const bool& aTemporary) MOZ_OVERRIDE;
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virtual bool
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DeallocPPluginIdentifierChild(PPluginIdentifierChild* aActor) MOZ_OVERRIDE;
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virtual PPluginInstanceChild*
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AllocPPluginInstanceChild(const nsCString& aMimeType,
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const uint16_t& aMode,
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const InfallibleTArray<nsCString>& aNames,
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const InfallibleTArray<nsCString>& aValues,
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NPError* rv) MOZ_OVERRIDE;
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virtual bool
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DeallocPPluginInstanceChild(PPluginInstanceChild* aActor) MOZ_OVERRIDE;
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virtual bool
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AnswerPPluginInstanceConstructor(PPluginInstanceChild* aActor,
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const nsCString& aMimeType,
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const uint16_t& aMode,
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const InfallibleTArray<nsCString>& aNames,
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const InfallibleTArray<nsCString>& aValues,
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NPError* rv) MOZ_OVERRIDE;
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virtual bool
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AnswerNP_Shutdown(NPError *rv) MOZ_OVERRIDE;
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virtual bool
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AnswerOptionalFunctionsSupported(bool *aURLRedirectNotify,
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bool *aClearSiteData,
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bool *aGetSitesWithData) MOZ_OVERRIDE;
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virtual bool
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AnswerNPP_ClearSiteData(const nsCString& aSite,
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const uint64_t& aFlags,
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const uint64_t& aMaxAge,
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NPError* aResult) MOZ_OVERRIDE;
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virtual bool
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AnswerNPP_GetSitesWithData(InfallibleTArray<nsCString>* aResult) MOZ_OVERRIDE;
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virtual bool
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RecvSetAudioSessionData(const nsID& aId,
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const nsString& aDisplayName,
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const nsString& aIconPath) MOZ_OVERRIDE;
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virtual bool
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RecvSetParentHangTimeout(const uint32_t& aSeconds) MOZ_OVERRIDE;
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virtual PCrashReporterChild*
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AllocPCrashReporterChild(mozilla::dom::NativeThreadId* id,
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uint32_t* processType) MOZ_OVERRIDE;
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virtual bool
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DeallocPCrashReporterChild(PCrashReporterChild* actor) MOZ_OVERRIDE;
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virtual bool
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AnswerPCrashReporterConstructor(PCrashReporterChild* actor,
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mozilla::dom::NativeThreadId* id,
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uint32_t* processType) MOZ_OVERRIDE;
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virtual void
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ActorDestroy(ActorDestroyReason why) MOZ_OVERRIDE;
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MOZ_NORETURN void QuickExit();
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virtual bool
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RecvProcessNativeEventsInInterruptCall() MOZ_OVERRIDE;
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virtual bool
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AnswerGeckoGetProfile(nsCString* aProfile) MOZ_OVERRIDE;
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public:
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PluginModuleChild();
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virtual ~PluginModuleChild();
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// aPluginFilename is UTF8, not native-charset!
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bool Init(const std::string& aPluginFilename,
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base::ProcessHandle aParentProcessHandle,
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MessageLoop* aIOLoop,
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IPC::Channel* aChannel);
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void CleanUp();
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const char* GetUserAgent();
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static const NPNetscapeFuncs sBrowserFuncs;
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static PluginModuleChild* current();
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bool RegisterActorForNPObject(NPObject* aObject,
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PluginScriptableObjectChild* aActor);
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void UnregisterActorForNPObject(NPObject* aObject);
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PluginScriptableObjectChild* GetActorForNPObject(NPObject* aObject);
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#ifdef DEBUG
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bool NPObjectIsRegistered(NPObject* aObject);
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#endif
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bool AsyncDrawingAllowed() { return mAsyncDrawingAllowed; }
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/**
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* The child implementation of NPN_CreateObject.
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*/
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static NPObject* NPN_CreateObject(NPP aNPP, NPClass* aClass);
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/**
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* The child implementation of NPN_RetainObject.
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*/
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static NPObject* NPN_RetainObject(NPObject* aNPObj);
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/**
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* The child implementation of NPN_ReleaseObject.
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*/
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static void NPN_ReleaseObject(NPObject* aNPObj);
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/**
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* The child implementations of NPIdentifier-related functions.
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*/
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static NPIdentifier NPN_GetStringIdentifier(const NPUTF8* aName);
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static void NPN_GetStringIdentifiers(const NPUTF8** aNames,
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int32_t aNameCount,
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NPIdentifier* aIdentifiers);
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static NPIdentifier NPN_GetIntIdentifier(int32_t aIntId);
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static bool NPN_IdentifierIsString(NPIdentifier aIdentifier);
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static NPUTF8* NPN_UTF8FromIdentifier(NPIdentifier aIdentifier);
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static int32_t NPN_IntFromIdentifier(NPIdentifier aIdentifier);
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#ifdef MOZ_WIDGET_COCOA
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void ProcessNativeEvents();
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void PluginShowWindow(uint32_t window_id, bool modal, CGRect r) {
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SendPluginShowWindow(window_id, modal, r.origin.x, r.origin.y, r.size.width, r.size.height);
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}
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void PluginHideWindow(uint32_t window_id) {
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SendPluginHideWindow(window_id);
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}
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void SetCursor(NSCursorInfo& cursorInfo) {
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SendSetCursor(cursorInfo);
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}
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void ShowCursor(bool show) {
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SendShowCursor(show);
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}
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void PushCursor(NSCursorInfo& cursorInfo) {
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SendPushCursor(cursorInfo);
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}
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void PopCursor() {
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SendPopCursor();
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}
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bool GetNativeCursorsSupported() {
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bool supported = false;
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SendGetNativeCursorsSupported(&supported);
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return supported;
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}
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#endif
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// Quirks mode support for various plugin mime types
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enum PluginQuirks {
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QUIRKS_NOT_INITIALIZED = 0,
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// Silverlight assumes it is transparent in windowless mode. This quirk
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// matches the logic in nsNPAPIPluginInstance::SetWindowless.
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QUIRK_SILVERLIGHT_DEFAULT_TRANSPARENT = 1 << 0,
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// Win32: Hook TrackPopupMenu api so that we can swap out parent
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// hwnds. The api will fail with parents not associated with our
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// child ui thread. See WinlessHandleEvent for details.
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QUIRK_WINLESS_TRACKPOPUP_HOOK = 1 << 1,
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// Win32: Throttle flash WM_USER+1 heart beat messages to prevent
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// flooding chromium's dispatch loop, which can cause ipc traffic
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// processing lag.
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QUIRK_FLASH_THROTTLE_WMUSER_EVENTS = 1 << 2,
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// Win32: Catch resets on our subclass by hooking SetWindowLong.
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QUIRK_FLASH_HOOK_SETLONGPTR = 1 << 3,
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// X11: Work around a bug in Flash up to 10.1 d51 at least, where
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// expose event top left coordinates within the plugin-rect and
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// not at the drawable origin are misinterpreted.
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QUIRK_FLASH_EXPOSE_COORD_TRANSLATION = 1 << 4,
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// Win32: Catch get window info calls on the browser and tweak the
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// results so mouse input works when flash is displaying it's settings
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// window.
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QUIRK_FLASH_HOOK_GETWINDOWINFO = 1 << 5,
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// Win: Addresses a flash bug with mouse capture and full screen
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// windows.
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QUIRK_FLASH_FIXUP_MOUSE_CAPTURE = 1 << 6,
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// Win: QuickTime steals focus on SetWindow calls even if it's hidden.
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// Avoid calling SetWindow in that case.
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QUIRK_QUICKTIME_AVOID_SETWINDOW = 1 << 7,
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// Win: Check to make sure the parent window has focus before calling
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// set focus on the child. Addresses a full screen dialog prompt
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// problem in Silverlight.
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QUIRK_SILVERLIGHT_FOCUS_CHECK_PARENT = 1 << 8,
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// Mac: Allow the plugin to use offline renderer mode.
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// Use this only if the plugin is certified the support the offline renderer.
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QUIRK_ALLOW_OFFLINE_RENDERER = 1 << 9,
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// Mac: Work around a Flash bug that can cause plugin process crashes
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// in CoreGraphics mode: The Flash plugin sometimes accesses the
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// CGContextRef we pass to it in NPP_HandleEvent(NPCocoaEventDrawRect)
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// outside of that call. See bug 804606.
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QUIRK_FLASH_AVOID_CGMODE_CRASHES = 1 << 10,
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};
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int GetQuirks() { return mQuirks; }
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private:
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void AddQuirk(PluginQuirks quirk) {
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if (mQuirks == QUIRKS_NOT_INITIALIZED)
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mQuirks = 0;
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mQuirks |= quirk;
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}
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void InitQuirksModes(const nsCString& aMimeType);
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bool InitGraphics();
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void DeinitGraphics();
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#if defined(MOZ_WIDGET_GTK)
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static gboolean DetectNestedEventLoop(gpointer data);
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static gboolean ProcessBrowserEvents(gpointer data);
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virtual void EnteredCxxStack() MOZ_OVERRIDE;
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virtual void ExitedCxxStack() MOZ_OVERRIDE;
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#elif defined(MOZ_WIDGET_QT)
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virtual void EnteredCxxStack() MOZ_OVERRIDE;
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virtual void ExitedCxxStack() MOZ_OVERRIDE;
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#endif
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PRLibrary* mLibrary;
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nsCString mPluginFilename; // UTF8
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nsCString mUserAgent;
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int mQuirks;
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bool mAsyncDrawingAllowed;
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// we get this from the plugin
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NP_PLUGINSHUTDOWN mShutdownFunc;
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#if defined(OS_LINUX) || defined(OS_BSD)
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NP_PLUGINUNIXINIT mInitializeFunc;
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#elif defined(OS_WIN) || defined(OS_MACOSX)
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NP_PLUGININIT mInitializeFunc;
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NP_GETENTRYPOINTS mGetEntryPointsFunc;
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#endif
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NPPluginFuncs mFunctions;
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NPSavedData mSavedData;
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#if defined(MOZ_WIDGET_GTK)
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// If a plugin spins a nested glib event loop in response to a
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// synchronous IPC message from the browser, the loop might break
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// only after the browser responds to a request sent by the
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// plugin. This can happen if a plugin uses gtk's synchronous
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// copy/paste, for example. But because the browser is blocked on
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// a condvar, it can't respond to the request. This situation
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// isn't technically a deadlock, but the symptoms are basically
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// the same from the user's perspective.
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//
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// We take two steps to prevent this
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//
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// (1) Detect nested event loops spun by the plugin. This is
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// done by scheduling a glib timer event in the plugin
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// process whenever the browser might block on the plugin.
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// If the plugin indeed spins a nested loop, this timer event
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// will fire "soon" thereafter.
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//
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// (2) When a nested loop is detected, deschedule the
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// nested-loop-detection timer and in its place, schedule
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// another timer that periodically calls back into the
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// browser and spins a mini event loop. This mini event loop
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// processes a handful of pending native events.
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//
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// Because only timer (1) or (2) (or neither) may be active at any
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// point in time, we use the same member variable
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// |mNestedLoopTimerId| to refer to both.
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//
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// When the browser no longer might be blocked on a plugin's IPC
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// response, we deschedule whichever of (1) or (2) is active.
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guint mNestedLoopTimerId;
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# ifdef DEBUG
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// Depth of the stack of calls to g_main_context_dispatch before any
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// nested loops are run. This is 1 when IPC calls are dispatched from
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// g_main_context_iteration, or 0 when dispatched directly from
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// MessagePumpForUI.
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int mTopLoopDepth;
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# endif
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#elif defined (MOZ_WIDGET_QT)
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NestedLoopTimer *mNestedLoopTimerObject;
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#endif
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struct NPObjectData : public nsPtrHashKey<NPObject>
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{
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NPObjectData(const NPObject* key)
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: nsPtrHashKey<NPObject>(key)
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, instance(nullptr)
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, actor(nullptr)
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{ }
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// never nullptr
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PluginInstanceChild* instance;
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// sometimes nullptr (no actor associated with an NPObject)
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PluginScriptableObjectChild* actor;
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};
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/**
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* mObjectMap contains all the currently active NPObjects (from NPN_CreateObject until the
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* final release/dealloc, whether or not an actor is currently associated with the object.
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*/
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nsTHashtable<NPObjectData> mObjectMap;
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friend class PluginIdentifierChild;
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friend class PluginIdentifierChildString;
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friend class PluginIdentifierChildInt;
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nsDataHashtable<nsCStringHashKey, PluginIdentifierChildString*> mStringIdentifiers;
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nsDataHashtable<nsUint32HashKey, PluginIdentifierChildInt*> mIntIdentifiers;
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public: // called by PluginInstanceChild
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/**
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* Dealloc an NPObject after last-release or when the associated instance
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* is destroyed. This function will remove the object from mObjectMap.
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*/
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static void DeallocNPObject(NPObject* o);
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NPError NPP_Destroy(PluginInstanceChild* instance) {
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return mFunctions.destroy(instance->GetNPP(), 0);
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}
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/**
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* Fill PluginInstanceChild.mDeletingHash with all the remaining NPObjects
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* associated with that instance.
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*/
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void FindNPObjectsForInstance(PluginInstanceChild* instance);
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private:
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static PLDHashOperator CollectForInstance(NPObjectData* d, void* userArg);
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#if defined(OS_WIN)
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virtual void EnteredCall() MOZ_OVERRIDE;
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virtual void ExitedCall() MOZ_OVERRIDE;
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// Entered/ExitedCall notifications keep track of whether the plugin has
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// entered a nested event loop within this interrupt call.
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struct IncallFrame
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{
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IncallFrame()
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: _spinning(false)
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, _savedNestableTasksAllowed(false)
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{ }
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bool _spinning;
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bool _savedNestableTasksAllowed;
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};
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nsAutoTArray<IncallFrame, 8> mIncallPumpingStack;
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static LRESULT CALLBACK NestedInputEventHook(int code,
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WPARAM wParam,
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LPARAM lParam);
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static LRESULT CALLBACK CallWindowProcHook(int code,
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WPARAM wParam,
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LPARAM lParam);
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void SetEventHooks();
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void ResetEventHooks();
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HHOOK mNestedEventHook;
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HHOOK mGlobalCallWndProcHook;
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#endif
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};
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} /* namespace plugins */
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} /* namespace mozilla */
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#endif // ifndef dom_plugins_PluginModuleChild_h
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