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gecko-dev/dom/plugins/ipc/PluginModuleChild.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: sw=4 ts=4 et :
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef dom_plugins_PluginModuleChild_h
#define dom_plugins_PluginModuleChild_h 1
#include "mozilla/Attributes.h"
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "prlink.h"
#include "npapi.h"
#include "npfunctions.h"
#include "nsAutoPtr.h"
#include "nsDataHashtable.h"
#include "nsTHashtable.h"
#include "nsHashKeys.h"
#ifdef MOZ_WIDGET_COCOA
#include "PluginInterposeOSX.h"
#endif
#include "mozilla/plugins/PPluginModuleChild.h"
#include "mozilla/plugins/PluginInstanceChild.h"
#include "mozilla/plugins/PluginIdentifierChild.h"
// NOTE: stolen from nsNPAPIPlugin.h
/*
* Use this macro before each exported function
* (between the return address and the function
* itself), to ensure that the function has the
* right calling conventions on OS/2.
*/
#define NP_CALLBACK NP_LOADDS
#if defined(XP_WIN)
#define NS_NPAPIPLUGIN_CALLBACK(_type, _name) _type (__stdcall * _name)
#elif defined(XP_OS2)
#define NS_NPAPIPLUGIN_CALLBACK(_type, _name) _type (_System * _name)
#else
#define NS_NPAPIPLUGIN_CALLBACK(_type, _name) _type (* _name)
#endif
typedef NS_NPAPIPLUGIN_CALLBACK(NPError, NP_GETENTRYPOINTS) (NPPluginFuncs* pCallbacks);
typedef NS_NPAPIPLUGIN_CALLBACK(NPError, NP_PLUGININIT) (const NPNetscapeFuncs* pCallbacks);
typedef NS_NPAPIPLUGIN_CALLBACK(NPError, NP_PLUGINUNIXINIT) (const NPNetscapeFuncs* pCallbacks, NPPluginFuncs* fCallbacks);
typedef NS_NPAPIPLUGIN_CALLBACK(NPError, NP_PLUGINSHUTDOWN) (void);
namespace mozilla {
namespace dom {
class PCrashReporterChild;
}
namespace plugins {
#ifdef MOZ_WIDGET_QT
class NestedLoopTimer;
static const int kNestedLoopDetectorIntervalMs = 90;
#endif
class PluginScriptableObjectChild;
class PluginInstanceChild;
class PluginModuleChild : public PPluginModuleChild
{
typedef mozilla::dom::PCrashReporterChild PCrashReporterChild;
protected:
virtual mozilla::ipc::RacyInterruptPolicy
MediateInterruptRace(const Message& parent, const Message& child) MOZ_OVERRIDE
{
return MediateRace(parent, child);
}
virtual bool ShouldContinueFromReplyTimeout() MOZ_OVERRIDE;
// Implement the PPluginModuleChild interface
virtual bool AnswerNP_GetEntryPoints(NPError* rv);
virtual bool AnswerNP_Initialize(const uint32_t& aFlags, NPError* rv);
virtual PPluginIdentifierChild*
AllocPPluginIdentifierChild(const nsCString& aString,
const int32_t& aInt,
const bool& aTemporary);
virtual bool
RecvPPluginIdentifierConstructor(PPluginIdentifierChild* actor,
const nsCString& aString,
const int32_t& aInt,
const bool& aTemporary);
virtual bool
DeallocPPluginIdentifierChild(PPluginIdentifierChild* aActor);
virtual PPluginInstanceChild*
AllocPPluginInstanceChild(const nsCString& aMimeType,
const uint16_t& aMode,
const InfallibleTArray<nsCString>& aNames,
const InfallibleTArray<nsCString>& aValues,
NPError* rv);
virtual bool
DeallocPPluginInstanceChild(PPluginInstanceChild* aActor);
virtual bool
AnswerPPluginInstanceConstructor(PPluginInstanceChild* aActor,
const nsCString& aMimeType,
const uint16_t& aMode,
const InfallibleTArray<nsCString>& aNames,
const InfallibleTArray<nsCString>& aValues,
NPError* rv);
virtual bool
AnswerNP_Shutdown(NPError *rv);
virtual bool
AnswerOptionalFunctionsSupported(bool *aURLRedirectNotify,
bool *aClearSiteData,
bool *aGetSitesWithData);
virtual bool
AnswerNPP_ClearSiteData(const nsCString& aSite,
const uint64_t& aFlags,
const uint64_t& aMaxAge,
NPError* aResult);
virtual bool
AnswerNPP_GetSitesWithData(InfallibleTArray<nsCString>* aResult);
virtual bool
RecvSetAudioSessionData(const nsID& aId,
const nsString& aDisplayName,
const nsString& aIconPath);
virtual bool
RecvSetParentHangTimeout(const uint32_t& aSeconds);
virtual PCrashReporterChild*
AllocPCrashReporterChild(mozilla::dom::NativeThreadId* id,
uint32_t* processType);
virtual bool
DeallocPCrashReporterChild(PCrashReporterChild* actor);
virtual bool
AnswerPCrashReporterConstructor(PCrashReporterChild* actor,
mozilla::dom::NativeThreadId* id,
uint32_t* processType);
virtual void
ActorDestroy(ActorDestroyReason why);
MOZ_NORETURN void QuickExit();
virtual bool
RecvProcessNativeEventsInInterruptCall() MOZ_OVERRIDE;
virtual bool
AnswerGeckoGetProfile(nsCString* aProfile);
public:
PluginModuleChild();
virtual ~PluginModuleChild();
// aPluginFilename is UTF8, not native-charset!
bool Init(const std::string& aPluginFilename,
base::ProcessHandle aParentProcessHandle,
MessageLoop* aIOLoop,
IPC::Channel* aChannel);
void CleanUp();
const char* GetUserAgent();
static const NPNetscapeFuncs sBrowserFuncs;
static PluginModuleChild* current();
bool RegisterActorForNPObject(NPObject* aObject,
PluginScriptableObjectChild* aActor);
void UnregisterActorForNPObject(NPObject* aObject);
PluginScriptableObjectChild* GetActorForNPObject(NPObject* aObject);
#ifdef DEBUG
bool NPObjectIsRegistered(NPObject* aObject);
#endif
bool AsyncDrawingAllowed() { return mAsyncDrawingAllowed; }
/**
* The child implementation of NPN_CreateObject.
*/
static NPObject* NP_CALLBACK NPN_CreateObject(NPP aNPP, NPClass* aClass);
/**
* The child implementation of NPN_RetainObject.
*/
static NPObject* NP_CALLBACK NPN_RetainObject(NPObject* aNPObj);
/**
* The child implementation of NPN_ReleaseObject.
*/
static void NP_CALLBACK NPN_ReleaseObject(NPObject* aNPObj);
/**
* The child implementations of NPIdentifier-related functions.
*/
static NPIdentifier NP_CALLBACK NPN_GetStringIdentifier(const NPUTF8* aName);
static void NP_CALLBACK NPN_GetStringIdentifiers(const NPUTF8** aNames,
int32_t aNameCount,
NPIdentifier* aIdentifiers);
static NPIdentifier NP_CALLBACK NPN_GetIntIdentifier(int32_t aIntId);
static bool NP_CALLBACK NPN_IdentifierIsString(NPIdentifier aIdentifier);
static NPUTF8* NP_CALLBACK NPN_UTF8FromIdentifier(NPIdentifier aIdentifier);
static int32_t NP_CALLBACK NPN_IntFromIdentifier(NPIdentifier aIdentifier);
#ifdef MOZ_WIDGET_COCOA
void ProcessNativeEvents();
void PluginShowWindow(uint32_t window_id, bool modal, CGRect r) {
SendPluginShowWindow(window_id, modal, r.origin.x, r.origin.y, r.size.width, r.size.height);
}
void PluginHideWindow(uint32_t window_id) {
SendPluginHideWindow(window_id);
}
void SetCursor(NSCursorInfo& cursorInfo) {
SendSetCursor(cursorInfo);
}
void ShowCursor(bool show) {
SendShowCursor(show);
}
void PushCursor(NSCursorInfo& cursorInfo) {
SendPushCursor(cursorInfo);
}
void PopCursor() {
SendPopCursor();
}
bool GetNativeCursorsSupported() {
bool supported = false;
SendGetNativeCursorsSupported(&supported);
return supported;
}
#endif
// Quirks mode support for various plugin mime types
enum PluginQuirks {
QUIRKS_NOT_INITIALIZED = 0,
// Silverlight assumes it is transparent in windowless mode. This quirk
// matches the logic in nsNPAPIPluginInstance::SetWindowless.
QUIRK_SILVERLIGHT_DEFAULT_TRANSPARENT = 1 << 0,
// Win32: Hook TrackPopupMenu api so that we can swap out parent
// hwnds. The api will fail with parents not associated with our
// child ui thread. See WinlessHandleEvent for details.
QUIRK_WINLESS_TRACKPOPUP_HOOK = 1 << 1,
// Win32: Throttle flash WM_USER+1 heart beat messages to prevent
// flooding chromium's dispatch loop, which can cause ipc traffic
// processing lag.
QUIRK_FLASH_THROTTLE_WMUSER_EVENTS = 1 << 2,
// Win32: Catch resets on our subclass by hooking SetWindowLong.
QUIRK_FLASH_HOOK_SETLONGPTR = 1 << 3,
// X11: Work around a bug in Flash up to 10.1 d51 at least, where
// expose event top left coordinates within the plugin-rect and
// not at the drawable origin are misinterpreted.
QUIRK_FLASH_EXPOSE_COORD_TRANSLATION = 1 << 4,
// Win32: Catch get window info calls on the browser and tweak the
// results so mouse input works when flash is displaying it's settings
// window.
QUIRK_FLASH_HOOK_GETWINDOWINFO = 1 << 5,
// Win: Addresses a flash bug with mouse capture and full screen
// windows.
QUIRK_FLASH_FIXUP_MOUSE_CAPTURE = 1 << 6,
// Win: QuickTime steals focus on SetWindow calls even if it's hidden.
// Avoid calling SetWindow in that case.
QUIRK_QUICKTIME_AVOID_SETWINDOW = 1 << 7,
// Win: Check to make sure the parent window has focus before calling
// set focus on the child. Addresses a full screen dialog prompt
// problem in Silverlight.
QUIRK_SILVERLIGHT_FOCUS_CHECK_PARENT = 1 << 8,
// Mac: Allow the plugin to use offline renderer mode.
// Use this only if the plugin is certified the support the offline renderer.
QUIRK_ALLOW_OFFLINE_RENDERER = 1 << 9,
// Mac: Work around a Flash bug that can cause plugin process crashes
// in CoreGraphics mode: The Flash plugin sometimes accesses the
// CGContextRef we pass to it in NPP_HandleEvent(NPCocoaEventDrawRect)
// outside of that call. See bug 804606.
QUIRK_FLASH_AVOID_CGMODE_CRASHES = 1 << 10,
};
int GetQuirks() { return mQuirks; }
private:
void AddQuirk(PluginQuirks quirk) {
if (mQuirks == QUIRKS_NOT_INITIALIZED)
mQuirks = 0;
mQuirks |= quirk;
}
void InitQuirksModes(const nsCString& aMimeType);
bool InitGraphics();
void DeinitGraphics();
#if defined(MOZ_WIDGET_GTK)
static gboolean DetectNestedEventLoop(gpointer data);
static gboolean ProcessBrowserEvents(gpointer data);
virtual void EnteredCxxStack() MOZ_OVERRIDE;
virtual void ExitedCxxStack() MOZ_OVERRIDE;
#elif defined(MOZ_WIDGET_QT)
virtual void EnteredCxxStack() MOZ_OVERRIDE;
virtual void ExitedCxxStack() MOZ_OVERRIDE;
#endif
PRLibrary* mLibrary;
nsCString mPluginFilename; // UTF8
nsCString mUserAgent;
int mQuirks;
bool mAsyncDrawingAllowed;
// we get this from the plugin
NP_PLUGINSHUTDOWN mShutdownFunc;
#if defined(OS_LINUX) || defined(OS_BSD)
NP_PLUGINUNIXINIT mInitializeFunc;
#elif defined(OS_WIN) || defined(OS_MACOSX)
NP_PLUGININIT mInitializeFunc;
NP_GETENTRYPOINTS mGetEntryPointsFunc;
#endif
NPPluginFuncs mFunctions;
NPSavedData mSavedData;
#if defined(MOZ_WIDGET_GTK)
// If a plugin spins a nested glib event loop in response to a
// synchronous IPC message from the browser, the loop might break
// only after the browser responds to a request sent by the
// plugin. This can happen if a plugin uses gtk's synchronous
// copy/paste, for example. But because the browser is blocked on
// a condvar, it can't respond to the request. This situation
// isn't technically a deadlock, but the symptoms are basically
// the same from the user's perspective.
//
// We take two steps to prevent this
//
// (1) Detect nested event loops spun by the plugin. This is
// done by scheduling a glib timer event in the plugin
// process whenever the browser might block on the plugin.
// If the plugin indeed spins a nested loop, this timer event
// will fire "soon" thereafter.
//
// (2) When a nested loop is detected, deschedule the
// nested-loop-detection timer and in its place, schedule
// another timer that periodically calls back into the
// browser and spins a mini event loop. This mini event loop
// processes a handful of pending native events.
//
// Because only timer (1) or (2) (or neither) may be active at any
// point in time, we use the same member variable
// |mNestedLoopTimerId| to refer to both.
//
// When the browser no longer might be blocked on a plugin's IPC
// response, we deschedule whichever of (1) or (2) is active.
guint mNestedLoopTimerId;
# ifdef DEBUG
// Depth of the stack of calls to g_main_context_dispatch before any
// nested loops are run. This is 1 when IPC calls are dispatched from
// g_main_context_iteration, or 0 when dispatched directly from
// MessagePumpForUI.
int mTopLoopDepth;
# endif
#elif defined (MOZ_WIDGET_QT)
NestedLoopTimer *mNestedLoopTimerObject;
#endif
struct NPObjectData : public nsPtrHashKey<NPObject>
{
NPObjectData(const NPObject* key)
: nsPtrHashKey<NPObject>(key)
, instance(nullptr)
, actor(nullptr)
{ }
// never nullptr
PluginInstanceChild* instance;
// sometimes nullptr (no actor associated with an NPObject)
PluginScriptableObjectChild* actor;
};
/**
* mObjectMap contains all the currently active NPObjects (from NPN_CreateObject until the
* final release/dealloc, whether or not an actor is currently associated with the object.
*/
nsTHashtable<NPObjectData> mObjectMap;
friend class PluginIdentifierChild;
friend class PluginIdentifierChildString;
friend class PluginIdentifierChildInt;
nsDataHashtable<nsCStringHashKey, PluginIdentifierChildString*> mStringIdentifiers;
nsDataHashtable<nsUint32HashKey, PluginIdentifierChildInt*> mIntIdentifiers;
public: // called by PluginInstanceChild
/**
* Dealloc an NPObject after last-release or when the associated instance
* is destroyed. This function will remove the object from mObjectMap.
*/
static void DeallocNPObject(NPObject* o);
NPError NPP_Destroy(PluginInstanceChild* instance) {
return mFunctions.destroy(instance->GetNPP(), 0);
}
/**
* Fill PluginInstanceChild.mDeletingHash with all the remaining NPObjects
* associated with that instance.
*/
void FindNPObjectsForInstance(PluginInstanceChild* instance);
private:
static PLDHashOperator CollectForInstance(NPObjectData* d, void* userArg);
#if defined(OS_WIN)
virtual void EnteredCall() MOZ_OVERRIDE;
virtual void ExitedCall() MOZ_OVERRIDE;
// Entered/ExitedCall notifications keep track of whether the plugin has
// entered a nested event loop within this interrupt call.
struct IncallFrame
{
IncallFrame()
: _spinning(false)
, _savedNestableTasksAllowed(false)
{ }
bool _spinning;
bool _savedNestableTasksAllowed;
};
nsAutoTArray<IncallFrame, 8> mIncallPumpingStack;
static LRESULT CALLBACK NestedInputEventHook(int code,
WPARAM wParam,
LPARAM lParam);
static LRESULT CALLBACK CallWindowProcHook(int code,
WPARAM wParam,
LPARAM lParam);
void SetEventHooks();
void ResetEventHooks();
HHOOK mNestedEventHook;
HHOOK mGlobalCallWndProcHook;
#endif
};
} /* namespace plugins */
} /* namespace mozilla */
#endif // ifndef dom_plugins_PluginModuleChild_h
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