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nsNPAPIPlugin.cpp
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nsNPAPIPlugin.cpp
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
#include "base/basictypes.h"
/* This must occur *after* layers/PLayerTransaction.h to avoid typedefs
* conflicts. */
#include "mozilla/ArrayUtils.h"
#include "pratom.h"
#include "prenv.h"
#include "jsfriendapi.h"
#include "nsPluginHost.h"
#include "nsNPAPIPlugin.h"
#include "nsNPAPIPluginInstance.h"
#include "nsNPAPIPluginStreamListener.h"
#include "nsPluginStreamListenerPeer.h"
#include "nsThreadUtils.h"
#include "mozilla/CycleCollectedJSContext.h" // for nsAutoMicroTask
#include "mozilla/Preferences.h"
#include "nsPluginInstanceOwner.h"
#include "nsPluginsDir.h"
#include "nsPluginLogging.h"
#include "nsPIDOMWindow.h"
#include "nsGlobalWindow.h"
#include "mozilla/dom/Document.h"
#include "nsIContent.h"
#include "nsIIDNService.h"
#include "nsIScriptGlobalObject.h"
#include "nsIScriptContext.h"
#include "nsDOMJSUtils.h"
#include "nsIPrincipal.h"
#include "nsWildCard.h"
#include "nsContentUtils.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozilla/dom/ToJSValue.h"
#include "nsIXPConnect.h"
#include <prinrval.h>
#ifdef MOZ_WIDGET_COCOA
# include <Carbon/Carbon.h>
# include <ApplicationServices/ApplicationServices.h>
# include <OpenGL/OpenGL.h>
# include "nsCocoaFeatures.h"
# include "PluginUtilsOSX.h"
#endif
// needed for nppdf plugin
#if (MOZ_WIDGET_GTK)
# include <gdk/gdk.h>
# include <gdk/gdkx.h>
#endif
#include "nsJSUtils.h"
#include "nsJSNPRuntime.h"
#include "nsNetUtil.h"
#include "nsNetCID.h"
#include "mozilla/Mutex.h"
#include "mozilla/PluginLibrary.h"
using mozilla::PluginLibrary;
#include "mozilla/plugins/PluginModuleParent.h"
using mozilla::plugins::PluginModuleChromeParent;
using mozilla::plugins::PluginModuleContentParent;
#ifdef MOZ_X11
# include "mozilla/X11Util.h"
#endif
#ifdef XP_WIN
# include <windows.h>
# include "mozilla/WindowsVersion.h"
# ifdef ACCESSIBILITY
# include "mozilla/a11y/Compatibility.h"
# endif
#endif
#include "AudioChannelService.h"
using namespace mozilla;
using namespace mozilla::plugins::parent;
using mozilla::dom::Document;
// We should make this const...
static NPNetscapeFuncs sBrowserFuncs = {
sizeof(sBrowserFuncs),
(NP_VERSION_MAJOR << 8) + NP_VERSION_MINOR,
_geturl,
_posturl,
_requestread,
nullptr, // _newstream, unimplemented
nullptr, // _write, unimplemented
nullptr, // _destroystream, unimplemented
_status,
_useragent,
_memalloc,
_memfree,
_memflush,
_reloadplugins,
_getJavaEnv,
_getJavaPeer,
_geturlnotify,
_posturlnotify,
_getvalue,
_setvalue,
_invalidaterect,
_invalidateregion,
_forceredraw,
_getstringidentifier,
_getstringidentifiers,
_getintidentifier,
_identifierisstring,
_utf8fromidentifier,
_intfromidentifier,
_createobject,
_retainobject,
_releaseobject,
_invoke,
_invokeDefault,
_evaluate,
_getproperty,
_setproperty,
_removeproperty,
_hasproperty,
_hasmethod,
_releasevariantvalue,
_setexception,
_pushpopupsenabledstate,
_poppopupsenabledstate,
_enumerate,
nullptr, // pluginthreadasynccall, not used
_construct,
_getvalueforurl,
_setvalueforurl,
nullptr, // NPN GetAuthenticationInfo, not supported
_scheduletimer,
_unscheduletimer,
_popupcontextmenu,
_convertpoint,
nullptr, // handleevent, unimplemented
nullptr, // unfocusinstance, unimplemented
_urlredirectresponse,
_initasyncsurface,
_finalizeasyncsurface,
_setcurrentasyncsurface};
// POST/GET stream type
enum eNPPStreamTypeInternal {
eNPPStreamTypeInternal_Get,
eNPPStreamTypeInternal_Post
};
void NS_NotifyBeginPluginCall(NSPluginCallReentry aReentryState) {
nsNPAPIPluginInstance::BeginPluginCall(aReentryState);
}
void NS_NotifyPluginCall(NSPluginCallReentry aReentryState) {
nsNPAPIPluginInstance::EndPluginCall(aReentryState);
}
nsNPAPIPlugin::nsNPAPIPlugin() {
memset((void*)&mPluginFuncs, 0, sizeof(mPluginFuncs));
mPluginFuncs.size = sizeof(mPluginFuncs);
mPluginFuncs.version = (NP_VERSION_MAJOR << 8) | NP_VERSION_MINOR;
mLibrary = nullptr;
}
nsNPAPIPlugin::~nsNPAPIPlugin() {
delete mLibrary;
mLibrary = nullptr;
}
void nsNPAPIPlugin::PluginCrashed(const nsAString& aPluginDumpID,
const nsACString& aAdditionalMinidumps) {
RefPtr<nsPluginHost> host = nsPluginHost::GetInst();
host->PluginCrashed(this, aPluginDumpID, aAdditionalMinidumps);
}
inline PluginLibrary* GetNewPluginLibrary(nsPluginTag* aPluginTag) {
AUTO_PROFILER_LABEL("GetNewPluginLibrary", OTHER);
if (!aPluginTag) {
return nullptr;
}
if (XRE_IsContentProcess()) {
return PluginModuleContentParent::LoadModule(aPluginTag->mId, aPluginTag);
}
return PluginModuleChromeParent::LoadModule(aPluginTag->mFullPath.get(),
aPluginTag->mId, aPluginTag);
}
// Creates an nsNPAPIPlugin object. One nsNPAPIPlugin object exists per plugin
// (not instance).
nsresult nsNPAPIPlugin::CreatePlugin(nsPluginTag* aPluginTag,
nsNPAPIPlugin** aResult) {
AUTO_PROFILER_LABEL("nsNPAPIPlugin::CreatePlugin", OTHER);
*aResult = nullptr;
if (!aPluginTag) {
return NS_ERROR_FAILURE;
}
RefPtr<nsNPAPIPlugin> plugin = new nsNPAPIPlugin();
PluginLibrary* pluginLib = GetNewPluginLibrary(aPluginTag);
if (!pluginLib) {
return NS_ERROR_FAILURE;
}
#if defined(XP_MACOSX)
if (!pluginLib->HasRequiredFunctions()) {
NS_WARNING(
"Not all necessary functions exposed by plugin, it will not load.");
delete pluginLib;
return NS_ERROR_FAILURE;
}
#endif
plugin->mLibrary = pluginLib;
pluginLib->SetPlugin(plugin);
// Exchange NPAPI entry points.
#if defined(XP_WIN)
// NP_GetEntryPoints must be called before NP_Initialize on Windows.
NPError pluginCallError;
nsresult rv =
pluginLib->NP_GetEntryPoints(&plugin->mPluginFuncs, &pluginCallError);
if (rv != NS_OK || pluginCallError != NPERR_NO_ERROR) {
return NS_ERROR_FAILURE;
}
// NP_Initialize must be called after NP_GetEntryPoints on Windows.
rv = pluginLib->NP_Initialize(&sBrowserFuncs, &pluginCallError);
if (rv != NS_OK || pluginCallError != NPERR_NO_ERROR) {
return NS_ERROR_FAILURE;
}
#elif defined(XP_MACOSX)
// NP_Initialize must be called before NP_GetEntryPoints on Mac OS X.
// We need to match WebKit's behavior.
NPError pluginCallError;
nsresult rv = pluginLib->NP_Initialize(&sBrowserFuncs, &pluginCallError);
if (rv != NS_OK || pluginCallError != NPERR_NO_ERROR) {
return NS_ERROR_FAILURE;
}
rv = pluginLib->NP_GetEntryPoints(&plugin->mPluginFuncs, &pluginCallError);
if (rv != NS_OK || pluginCallError != NPERR_NO_ERROR) {
return NS_ERROR_FAILURE;
}
#else
NPError pluginCallError;
nsresult rv = pluginLib->NP_Initialize(&sBrowserFuncs, &plugin->mPluginFuncs,
&pluginCallError);
if (rv != NS_OK || pluginCallError != NPERR_NO_ERROR) {
return NS_ERROR_FAILURE;
}
#endif
plugin.forget(aResult);
return NS_OK;
}
PluginLibrary* nsNPAPIPlugin::GetLibrary() { return mLibrary; }
NPPluginFuncs* nsNPAPIPlugin::PluginFuncs() { return &mPluginFuncs; }
nsresult nsNPAPIPlugin::Shutdown() {
NPP_PLUGIN_LOG(PLUGIN_LOG_BASIC,
("NPP Shutdown to be called: this=%p\n", this));
NPError shutdownError;
mLibrary->NP_Shutdown(&shutdownError);
return NS_OK;
}
nsresult nsNPAPIPlugin::RetainStream(NPStream* pstream,
nsISupports** aRetainedPeer) {
if (!aRetainedPeer) return NS_ERROR_NULL_POINTER;
*aRetainedPeer = nullptr;
if (!pstream || !pstream->ndata) return NS_ERROR_NULL_POINTER;
nsNPAPIStreamWrapper* streamWrapper =
static_cast<nsNPAPIStreamWrapper*>(pstream->ndata);
nsNPAPIPluginStreamListener* listener = streamWrapper->GetStreamListener();
if (!listener) {
return NS_ERROR_NULL_POINTER;
}
nsIStreamListener* streamListener = listener->GetStreamListenerPeer();
if (!streamListener) {
return NS_ERROR_NULL_POINTER;
}
*aRetainedPeer = streamListener;
NS_ADDREF(*aRetainedPeer);
return NS_OK;
}
// Create a new NPP GET or POST (given in the type argument) url
// stream that may have a notify callback
NPError MakeNewNPAPIStreamInternal(NPP npp, const char* relativeURL,
const char* target,
eNPPStreamTypeInternal type,
bool bDoNotify = false,
void* notifyData = nullptr, uint32_t len = 0,
const char* buf = nullptr) {
if (!npp) return NPERR_INVALID_INSTANCE_ERROR;
PluginDestructionGuard guard(npp);
nsNPAPIPluginInstance* inst = (nsNPAPIPluginInstance*)npp->ndata;
if (!inst || !inst->IsRunning()) return NPERR_INVALID_INSTANCE_ERROR;
nsCOMPtr<nsIPluginHost> pluginHostCOM =
do_GetService(MOZ_PLUGIN_HOST_CONTRACTID);
nsPluginHost* pluginHost = static_cast<nsPluginHost*>(pluginHostCOM.get());
if (!pluginHost) {
return NPERR_GENERIC_ERROR;
}
RefPtr<nsNPAPIPluginStreamListener> listener;
// Set aCallNotify here to false. If pluginHost->GetURL or PostURL fail,
// the listener's destructor will do the notification while we are about to
// return a failure code.
// Call SetCallNotify(true) below after we are sure we cannot return a failure
// code.
if (!target) {
inst->NewStreamListener(relativeURL, notifyData, getter_AddRefs(listener));
if (listener) {
listener->SetCallNotify(false);
}
}
switch (type) {
case eNPPStreamTypeInternal_Get: {
if (NS_FAILED(pluginHost->GetURL(inst, relativeURL, target, listener,
nullptr, nullptr, false)))
return NPERR_GENERIC_ERROR;
break;
}
case eNPPStreamTypeInternal_Post: {
if (NS_FAILED(pluginHost->PostURL(inst, relativeURL, len, buf, target,
listener, nullptr, nullptr, false, 0,
nullptr)))
return NPERR_GENERIC_ERROR;
break;
}
default:
NS_ERROR("how'd I get here");
}
if (listener) {
// SetCallNotify(bDoNotify) here, see comment above.
listener->SetCallNotify(bDoNotify);
}
return NPERR_NO_ERROR;
}
#if defined(MOZ_MEMORY) && defined(XP_WIN)
extern "C" size_t malloc_usable_size(const void* ptr);
#endif
namespace {
static char* gNPPException;
static Document* GetDocumentFromNPP(NPP npp) {
NS_ENSURE_TRUE(npp, nullptr);
nsNPAPIPluginInstance* inst = (nsNPAPIPluginInstance*)npp->ndata;
NS_ENSURE_TRUE(inst, nullptr);
PluginDestructionGuard guard(inst);
RefPtr<nsPluginInstanceOwner> owner = inst->GetOwner();
NS_ENSURE_TRUE(owner, nullptr);
nsCOMPtr<Document> doc;
owner->GetDocument(getter_AddRefs(doc));
return doc;
}
static NPIdentifier doGetIdentifier(JSContext* cx, const NPUTF8* name) {
NS_ConvertUTF8toUTF16 utf16name(name);
JSString* str =
::JS_AtomizeAndPinUCStringN(cx, utf16name.get(), utf16name.Length());
if (!str) return nullptr;
return StringToNPIdentifier(cx, str);
}
#if defined(MOZ_MEMORY) && defined(XP_WIN)
BOOL InHeap(HANDLE hHeap, LPVOID lpMem) {
BOOL success = FALSE;
PROCESS_HEAP_ENTRY he;
he.lpData = nullptr;
while (HeapWalk(hHeap, &he) != 0) {
if (he.lpData == lpMem) {
success = TRUE;
break;
}
}
HeapUnlock(hHeap);
return success;
}
#endif
} /* anonymous namespace */
NPPExceptionAutoHolder::NPPExceptionAutoHolder()
: mOldException(gNPPException) {
gNPPException = nullptr;
}
NPPExceptionAutoHolder::~NPPExceptionAutoHolder() {
NS_ASSERTION(!gNPPException, "NPP exception not properly cleared!");
gNPPException = mOldException;
}
NPP NPPStack::sCurrentNPP = nullptr;
const char* PeekException() { return gNPPException; }
void PopException() {
NS_ASSERTION(gNPPException, "Uh, no NPP exception to pop!");
if (gNPPException) {
free(gNPPException);
gNPPException = nullptr;
}
}
//
// Static callbacks that get routed back through the new C++ API
//
namespace mozilla::plugins::parent {
NPError _geturl(NPP npp, const char* relativeURL, const char* target) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_geturl called from the wrong thread\n"));
return NPERR_INVALID_PARAM;
}
NPN_PLUGIN_LOG(PLUGIN_LOG_NORMAL, ("NPN_GetURL: npp=%p, target=%s, url=%s\n",
(void*)npp, target, relativeURL));
PluginDestructionGuard guard(npp);
return MakeNewNPAPIStreamInternal(npp, relativeURL, target,
eNPPStreamTypeInternal_Get);
}
NPError _geturlnotify(NPP npp, const char* relativeURL, const char* target,
void* notifyData) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_geturlnotify called from the wrong thread\n"));
return NPERR_INVALID_PARAM;
}
NPN_PLUGIN_LOG(PLUGIN_LOG_NORMAL,
("NPN_GetURLNotify: npp=%p, target=%s, notify=%p, url=%s\n",
(void*)npp, target, notifyData, relativeURL));
PluginDestructionGuard guard(npp);
return MakeNewNPAPIStreamInternal(
npp, relativeURL, target, eNPPStreamTypeInternal_Get, true, notifyData);
}
NPError _posturlnotify(NPP npp, const char* relativeURL, const char* target,
uint32_t len, const char* buf, NPBool file,
void* notifyData) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_posturlnotify called from the wrong thread\n"));
return NPERR_INVALID_PARAM;
}
if (!buf) return NPERR_INVALID_PARAM;
NPN_PLUGIN_LOG(PLUGIN_LOG_NORMAL,
("NPN_PostURLNotify: npp=%p, target=%s, len=%d, file=%d, "
"notify=%p, url=%s, buf=%s\n",
(void*)npp, target, len, file, notifyData, relativeURL, buf));
PluginDestructionGuard guard(npp);
return MakeNewNPAPIStreamInternal(npp, relativeURL, target,
eNPPStreamTypeInternal_Post, true,
notifyData, len, buf);
}
NPError _posturl(NPP npp, const char* relativeURL, const char* target,
uint32_t len, const char* buf, NPBool file) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_posturl called from the wrong thread\n"));
return NPERR_INVALID_PARAM;
}
NPN_PLUGIN_LOG(PLUGIN_LOG_NORMAL,
("NPN_PostURL: npp=%p, target=%s, file=%d, len=%d, url=%s, "
"buf=%s\n",
(void*)npp, target, file, len, relativeURL, buf));
PluginDestructionGuard guard(npp);
return MakeNewNPAPIStreamInternal(npp, relativeURL, target,
eNPPStreamTypeInternal_Post, false, nullptr,
len, buf);
}
void _status(NPP npp, const char* message) {
// NPN_Status is no longer supported.
}
void _memfree(void* ptr) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_memfree called from the wrong thread\n"));
}
NPN_PLUGIN_LOG(PLUGIN_LOG_NOISY, ("NPN_MemFree: ptr=%p\n", ptr));
if (ptr) free(ptr);
}
uint32_t _memflush(uint32_t size) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_memflush called from the wrong thread\n"));
}
NPN_PLUGIN_LOG(PLUGIN_LOG_NOISY, ("NPN_MemFlush: size=%d\n", size));
nsMemory::HeapMinimize(true);
return 0;
}
void _reloadplugins(NPBool reloadPages) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_reloadplugins called from the wrong thread\n"));
return;
}
NPN_PLUGIN_LOG(PLUGIN_LOG_NORMAL,
("NPN_ReloadPlugins: reloadPages=%d\n", reloadPages));
nsCOMPtr<nsIPluginHost> pluginHost(do_GetService(MOZ_PLUGIN_HOST_CONTRACTID));
if (!pluginHost) return;
pluginHost->ReloadPlugins();
}
void _invalidaterect(NPP npp, NPRect* invalidRect) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_invalidaterect called from the wrong thread\n"));
return;
}
NPN_PLUGIN_LOG(PLUGIN_LOG_NORMAL,
("NPN_InvalidateRect: npp=%p, top=%d, left=%d, bottom=%d, "
"right=%d\n",
(void*)npp, invalidRect->top, invalidRect->left,
invalidRect->bottom, invalidRect->right));
if (!npp || !npp->ndata) {
NS_WARNING("_invalidaterect: npp or npp->ndata == 0");
return;
}
nsNPAPIPluginInstance* inst = (nsNPAPIPluginInstance*)npp->ndata;
PluginDestructionGuard guard(inst);
inst->InvalidateRect((NPRect*)invalidRect);
}
void _invalidateregion(NPP npp, NPRegion invalidRegion) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_invalidateregion called from the wrong thread\n"));
return;
}
NPN_PLUGIN_LOG(PLUGIN_LOG_NORMAL,
("NPN_InvalidateRegion: npp=%p, region=%p\n", (void*)npp,
(void*)invalidRegion));
if (!npp || !npp->ndata) {
NS_WARNING("_invalidateregion: npp or npp->ndata == 0");
return;
}
nsNPAPIPluginInstance* inst = (nsNPAPIPluginInstance*)npp->ndata;
PluginDestructionGuard guard(inst);
inst->InvalidateRegion((NPRegion)invalidRegion);
}
void _forceredraw(NPP npp) {}
NPObject* _getwindowobject(NPP npp) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_getwindowobject called from the wrong thread\n"));
return nullptr;
}
// The window want to return here is the outer window, *not* the inner (since
// we don't know what the plugin will do with it).
Document* doc = GetDocumentFromNPP(npp);
NS_ENSURE_TRUE(doc, nullptr);
nsCOMPtr<nsPIDOMWindowOuter> outer = doc->GetWindow();
NS_ENSURE_TRUE(outer, nullptr);
JS::Rooted<JSObject*> windowProxy(
dom::RootingCx(), nsGlobalWindowOuter::Cast(outer)->GetGlobalJSObject());
JS::Rooted<JSObject*> global(dom::RootingCx(),
JS::GetNonCCWObjectGlobal(windowProxy));
return nsJSObjWrapper::GetNewOrUsed(npp, windowProxy, global);
}
NPObject* _getpluginelement(NPP npp) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_getpluginelement called from the wrong thread\n"));
return nullptr;
}
nsNPAPIPluginInstance* inst = static_cast<nsNPAPIPluginInstance*>(npp->ndata);
if (!inst) return nullptr;
RefPtr<dom::Element> element;
inst->GetDOMElement(getter_AddRefs(element));
if (!element) return nullptr;
Document* doc = GetDocumentFromNPP(npp);
if (NS_WARN_IF(!doc)) {
return nullptr;
}
dom::AutoJSAPI jsapi;
if (NS_WARN_IF(!jsapi.Init(doc->GetInnerWindow()))) {
return nullptr;
}
JSContext* cx = jsapi.cx();
nsCOMPtr<nsIXPConnect> xpc(nsIXPConnect::XPConnect());
NS_ENSURE_TRUE(xpc, nullptr);
JS::RootedValue val(cx);
if (!ToJSValue(cx, element, &val)) {
return nullptr;
}
if (NS_WARN_IF(!val.isObject())) {
return nullptr;
}
JS::RootedObject obj(cx, &val.toObject());
JS::RootedObject global(cx, JS::CurrentGlobalOrNull(cx));
return nsJSObjWrapper::GetNewOrUsed(npp, obj, global);
}
NPIdentifier _getstringidentifier(const NPUTF8* name) {
if (!name) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_getstringidentifier: passed null name"));
return nullptr;
}
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_getstringidentifier called from the wrong thread\n"));
}
AutoSafeJSContext cx;
return doGetIdentifier(cx, name);
}
void _getstringidentifiers(const NPUTF8** names, int32_t nameCount,
NPIdentifier* identifiers) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_getstringidentifiers called from the wrong thread\n"));
}
AutoSafeJSContext cx;
for (int32_t i = 0; i < nameCount; ++i) {
if (names[i]) {
identifiers[i] = doGetIdentifier(cx, names[i]);
} else {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_getstringidentifiers: passed null name"));
identifiers[i] = nullptr;
}
}
}
NPIdentifier _getintidentifier(int32_t intid) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_getstringidentifier called from the wrong thread\n"));
}
return IntToNPIdentifier(intid);
}
NPUTF8* _utf8fromidentifier(NPIdentifier id) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_utf8fromidentifier called from the wrong thread\n"));
}
if (!id) return nullptr;
if (!NPIdentifierIsString(id)) {
return nullptr;
}
JSString* str = NPIdentifierToString(id);
nsAutoString autoStr;
AssignJSLinearString(autoStr, JS_ASSERT_STRING_IS_LINEAR(str));
return ToNewUTF8String(autoStr);
}
int32_t _intfromidentifier(NPIdentifier id) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_intfromidentifier called from the wrong thread\n"));
}
if (!NPIdentifierIsInt(id)) {
return INT32_MIN;
}
return NPIdentifierToInt(id);
}
bool _identifierisstring(NPIdentifier id) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_identifierisstring called from the wrong thread\n"));
}
return NPIdentifierIsString(id);
}
NPObject* _createobject(NPP npp, NPClass* aClass) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_createobject called from the wrong thread\n"));
return nullptr;
}
if (!npp) {
NS_ERROR("Null npp passed to _createobject()!");
return nullptr;
}
PluginDestructionGuard guard(npp);
if (!aClass) {
NS_ERROR("Null class passed to _createobject()!");
return nullptr;
}
NPPAutoPusher nppPusher(npp);
NPObject* npobj;
if (aClass->allocate) {
npobj = aClass->allocate(npp, aClass);
} else {
npobj = (NPObject*)malloc(sizeof(NPObject));
}
if (npobj) {
npobj->_class = aClass;
npobj->referenceCount = 1;
NS_LOG_ADDREF(npobj, 1, "BrowserNPObject", sizeof(NPObject));
}
NPN_PLUGIN_LOG(PLUGIN_LOG_NOISY,
("Created NPObject %p, NPClass %p\n", npobj, aClass));
return npobj;
}
NPObject* _retainobject(NPObject* npobj) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_retainobject called from the wrong thread\n"));
}
if (npobj) {
#ifdef NS_BUILD_REFCNT_LOGGING
int32_t refCnt =
#endif
PR_ATOMIC_INCREMENT((int32_t*)&npobj->referenceCount);
NS_LOG_ADDREF(npobj, refCnt, "BrowserNPObject", sizeof(NPObject));
}
return npobj;
}
void _releaseobject(NPObject* npobj) {
// If nothing is passed, just return, even if we're on the wrong thread.
if (!npobj) {
return;
}
int32_t refCnt = PR_ATOMIC_DECREMENT((int32_t*)&npobj->referenceCount);
NS_LOG_RELEASE(npobj, refCnt, "BrowserNPObject");
if (refCnt == 0) {
nsNPObjWrapper::OnDestroy(npobj);
NPN_PLUGIN_LOG(PLUGIN_LOG_NOISY,
("Deleting NPObject %p, refcount hit 0\n", npobj));
if (npobj->_class && npobj->_class->deallocate) {
npobj->_class->deallocate(npobj);
} else {
free(npobj);
}
}
}
bool _invoke(NPP npp, NPObject* npobj, NPIdentifier method,
const NPVariant* args, uint32_t argCount, NPVariant* result) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_invoke called from the wrong thread\n"));
return false;
}
if (!npp || !npobj || !npobj->_class || !npobj->_class->invoke) return false;
PluginDestructionGuard guard(npp);
NPPExceptionAutoHolder nppExceptionHolder;
NPPAutoPusher nppPusher(npp);
NPN_PLUGIN_LOG(PLUGIN_LOG_NOISY,
("NPN_Invoke(npp %p, npobj %p, method %p, args %d\n", npp,
npobj, method, argCount));
return npobj->_class->invoke(npobj, method, args, argCount, result);
}
bool _invokeDefault(NPP npp, NPObject* npobj, const NPVariant* args,
uint32_t argCount, NPVariant* result) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_invokedefault called from the wrong thread\n"));
return false;
}
if (!npp || !npobj || !npobj->_class || !npobj->_class->invokeDefault)
return false;
NPPExceptionAutoHolder nppExceptionHolder;
NPPAutoPusher nppPusher(npp);
NPN_PLUGIN_LOG(
PLUGIN_LOG_NOISY,
("NPN_InvokeDefault(npp %p, npobj %p, args %d\n", npp, npobj, argCount));
return npobj->_class->invokeDefault(npobj, args, argCount, result);
}
bool _evaluate(NPP npp, NPObject* npobj, NPString* script, NPVariant* result) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_evaluate called from the wrong thread\n"));
return false;
}
if (!npp) return false;
NPPAutoPusher nppPusher(npp);
Document* doc = GetDocumentFromNPP(npp);
NS_ENSURE_TRUE(doc, false);
nsGlobalWindowInner* win = nsGlobalWindowInner::Cast(doc->GetInnerWindow());
if (NS_WARN_IF(!win || !win->HasJSGlobal())) {
return false;
}
nsAutoMicroTask mt;
dom::AutoEntryScript aes(win, "NPAPI NPN_evaluate");
JSContext* cx = aes.cx();
JS::Rooted<JSObject*> obj(cx, nsNPObjWrapper::GetNewOrUsed(npp, cx, npobj));
if (!obj) {
return false;
}
obj = js::ToWindowIfWindowProxy(obj);
MOZ_ASSERT(obj, "ToWindowIfWindowProxy should never return null");
if (result) {
// Initialize the out param to void
VOID_TO_NPVARIANT(*result);
}
if (!script || !script->UTF8Length || !script->UTF8Characters) {
// Nothing to evaluate.
return true;
}
NS_ConvertUTF8toUTF16 utf16script(script->UTF8Characters, script->UTF8Length);
nsIPrincipal* principal = doc->NodePrincipal();
nsCString specStr;
const char* spec;
principal->GetAsciiSpec(specStr);
spec = specStr.get();
if (specStr.IsEmpty()) {
// No URI in a principal means it's the system principal. If the
// document URI is a chrome:// URI, pass that in as the URI of the
// script, else pass in null for the filename as there's no way to
// know where this document really came from. Passing in null here
// also means that the script gets treated by XPConnect as if it
// needs additional protection, which is what we want for unknown
// chrome code anyways.
nsCOMPtr<nsIURI> uri = doc->GetDocumentURI();
if (uri && uri->SchemeIs("chrome")) {
uri->GetSpec(specStr);
spec = specStr.get();
} else {
spec = nullptr;
}
}
NPN_PLUGIN_LOG(PLUGIN_LOG_NOISY,
("NPN_Evaluate(npp %p, npobj %p, script <<<%s>>>) called\n",
npp, npobj, script->UTF8Characters));
JS::CompileOptions options(cx);
options.setFileAndLine(spec, 0);
JS::Rooted<JS::Value> rval(cx);
JS::RootedVector<JSObject*> scopeChain(cx);
if (!JS_IsGlobalObject(obj) && !scopeChain.append(obj)) {
return false;
}
// nsNPObjWrapper::GetNewOrUsed returns an object in the current compartment
// of the JSContext (it might be a CCW).
MOZ_RELEASE_ASSERT(
js::GetObjectCompartment(obj) == js::GetContextCompartment(cx),
"nsNPObjWrapper::GetNewOrUsed must wrap its return value");
obj = JS::CurrentGlobalOrNull(cx);
MOZ_ASSERT(obj);
nsresult rv = NS_OK;
{
nsJSUtils::ExecutionContext exec(cx, obj);
exec.SetScopeChain(scopeChain);
exec.Compile(options, utf16script);
rv = exec.ExecScript(&rval);
}
if (!JS_WrapValue(cx, &rval)) {
return false;
}
return NS_SUCCEEDED(rv) &&
(!result || JSValToNPVariant(npp, cx, rval, result));
}
bool _getproperty(NPP npp, NPObject* npobj, NPIdentifier property,
NPVariant* result) {
if (!NS_IsMainThread()) {
NPN_PLUGIN_LOG(PLUGIN_LOG_ALWAYS,
("NPN_getproperty called from the wrong thread\n"));