mirror of
https://github.com/mozilla/gecko-dev.git
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69446aded5
This patch has a few side effects:
1. Plugins in the chrome process are "mirrored" to all content processes,
although this mirroring is currently imperfect (bug 1090576)
2. Plugins are no longer sorted by modification date in nsPluginHost.
3. Plugin exceptions are no longer propagated to JS code. They are ignored.
411 lines
15 KiB
C++
411 lines
15 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/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(NPError* rv) MOZ_OVERRIDE;
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virtual PPluginModuleChild*
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AllocPPluginModuleChild(mozilla::ipc::Transport* aTransport,
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base::ProcessId aOtherProcess) 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(bool aIsChrome);
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virtual ~PluginModuleChild();
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bool CommonInit(base::ProcessHandle aParentProcessHandle,
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MessageLoop* aIOLoop,
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IPC::Channel* aChannel);
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// aPluginFilename is UTF8, not native-charset!
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bool InitForChrome(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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bool InitForContent(base::ProcessHandle aParentProcessHandle,
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MessageLoop* aIOLoop,
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IPC::Channel* aChannel);
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static PluginModuleChild*
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CreateForContentProcess(mozilla::ipc::Transport* aTransport,
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base::ProcessId aOtherProcess);
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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* GetChrome();
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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 mIsChrome;
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Transport* mTransport;
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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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#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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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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private:
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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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