1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/xpconnect/src/nsXPConnect.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,1628 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* vim: set ts=8 sts=4 et sw=4 tw=99: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +/* High level class and public functions implementation. */
1.11 +
1.12 +#include "mozilla/Assertions.h"
1.13 +#include "mozilla/Base64.h"
1.14 +#include "mozilla/Likely.h"
1.15 +
1.16 +#include "xpcprivate.h"
1.17 +#include "XPCWrapper.h"
1.18 +#include "jsfriendapi.h"
1.19 +#include "js/OldDebugAPI.h"
1.20 +#include "nsJSEnvironment.h"
1.21 +#include "nsThreadUtils.h"
1.22 +#include "nsDOMJSUtils.h"
1.23 +
1.24 +#include "WrapperFactory.h"
1.25 +#include "AccessCheck.h"
1.26 +
1.27 +#ifdef MOZ_JSDEBUGGER
1.28 +#include "jsdIDebuggerService.h"
1.29 +#endif
1.30 +
1.31 +#include "XPCQuickStubs.h"
1.32 +
1.33 +#include "mozilla/dom/BindingUtils.h"
1.34 +#include "mozilla/dom/Exceptions.h"
1.35 +#include "mozilla/dom/PromiseBinding.h"
1.36 +#include "mozilla/dom/TextDecoderBinding.h"
1.37 +#include "mozilla/dom/TextEncoderBinding.h"
1.38 +#include "mozilla/dom/DOMErrorBinding.h"
1.39 +
1.40 +#include "nsDOMMutationObserver.h"
1.41 +#include "nsICycleCollectorListener.h"
1.42 +#include "nsThread.h"
1.43 +#include "mozilla/XPTInterfaceInfoManager.h"
1.44 +#include "nsIObjectInputStream.h"
1.45 +#include "nsIObjectOutputStream.h"
1.46 +
1.47 +using namespace mozilla;
1.48 +using namespace mozilla::dom;
1.49 +using namespace xpc;
1.50 +using namespace JS;
1.51 +
1.52 +NS_IMPL_ISUPPORTS(nsXPConnect,
1.53 + nsIXPConnect,
1.54 + nsISupportsWeakReference,
1.55 + nsIThreadObserver,
1.56 + nsIJSRuntimeService)
1.57 +
1.58 +nsXPConnect* nsXPConnect::gSelf = nullptr;
1.59 +bool nsXPConnect::gOnceAliveNowDead = false;
1.60 +uint32_t nsXPConnect::gReportAllJSExceptions = 0;
1.61 +
1.62 +bool xpc::gDebugMode = false;
1.63 +bool xpc::gDesiredDebugMode = false;
1.64 +
1.65 +// Global cache of the default script security manager (QI'd to
1.66 +// nsIScriptSecurityManager)
1.67 +nsIScriptSecurityManager *nsXPConnect::gScriptSecurityManager = nullptr;
1.68 +
1.69 +const char XPC_CONTEXT_STACK_CONTRACTID[] = "@mozilla.org/js/xpc/ContextStack;1";
1.70 +const char XPC_RUNTIME_CONTRACTID[] = "@mozilla.org/js/xpc/RuntimeService;1";
1.71 +const char XPC_EXCEPTION_CONTRACTID[] = "@mozilla.org/js/xpc/Exception;1";
1.72 +const char XPC_CONSOLE_CONTRACTID[] = "@mozilla.org/consoleservice;1";
1.73 +const char XPC_SCRIPT_ERROR_CONTRACTID[] = "@mozilla.org/scripterror;1";
1.74 +const char XPC_ID_CONTRACTID[] = "@mozilla.org/js/xpc/ID;1";
1.75 +const char XPC_XPCONNECT_CONTRACTID[] = "@mozilla.org/js/xpc/XPConnect;1";
1.76 +
1.77 +/***************************************************************************/
1.78 +
1.79 +nsXPConnect::nsXPConnect()
1.80 + : mRuntime(nullptr),
1.81 + mShuttingDown(false),
1.82 + mEventDepth(0)
1.83 +{
1.84 + mRuntime = XPCJSRuntime::newXPCJSRuntime(this);
1.85 +
1.86 + char* reportableEnv = PR_GetEnv("MOZ_REPORT_ALL_JS_EXCEPTIONS");
1.87 + if (reportableEnv && *reportableEnv)
1.88 + gReportAllJSExceptions = 1;
1.89 +}
1.90 +
1.91 +nsXPConnect::~nsXPConnect()
1.92 +{
1.93 + mRuntime->DeleteSingletonScopes();
1.94 + mRuntime->DestroyJSContextStack();
1.95 +
1.96 + // In order to clean up everything properly, we need to GC twice: once now,
1.97 + // to clean anything that can go away on its own (like the Junk Scope, which
1.98 + // we unrooted above), and once after forcing a bunch of shutdown in
1.99 + // XPConnect, to clean the stuff we forcibly disconnected. The forced
1.100 + // shutdown code defaults to leaking in a number of situations, so we can't
1.101 + // get by with only the second GC. :-(
1.102 + JS_GC(mRuntime->Runtime());
1.103 +
1.104 + mShuttingDown = true;
1.105 + XPCWrappedNativeScope::SystemIsBeingShutDown();
1.106 + mRuntime->SystemIsBeingShutDown();
1.107 +
1.108 + // The above causes us to clean up a bunch of XPConnect data structures,
1.109 + // after which point we need to GC to clean everything up. We need to do
1.110 + // this before deleting the XPCJSRuntime, because doing so destroys the
1.111 + // maps that our finalize callback depends on.
1.112 + JS_GC(mRuntime->Runtime());
1.113 +
1.114 + mDefaultSecurityManager = nullptr;
1.115 + gScriptSecurityManager = nullptr;
1.116 +
1.117 + // shutdown the logging system
1.118 + XPC_LOG_FINISH();
1.119 +
1.120 + delete mRuntime;
1.121 +
1.122 + gSelf = nullptr;
1.123 + gOnceAliveNowDead = true;
1.124 +}
1.125 +
1.126 +// static
1.127 +void
1.128 +nsXPConnect::InitStatics()
1.129 +{
1.130 + gSelf = new nsXPConnect();
1.131 + gOnceAliveNowDead = false;
1.132 + if (!gSelf->mRuntime) {
1.133 + NS_RUNTIMEABORT("Couldn't create XPCJSRuntime.");
1.134 + }
1.135 +
1.136 + // Initial extra ref to keep the singleton alive
1.137 + // balanced by explicit call to ReleaseXPConnectSingleton()
1.138 + NS_ADDREF(gSelf);
1.139 +
1.140 + // Set XPConnect as the main thread observer.
1.141 + if (NS_FAILED(nsThread::SetMainThreadObserver(gSelf))) {
1.142 + MOZ_CRASH();
1.143 + }
1.144 +}
1.145 +
1.146 +nsXPConnect*
1.147 +nsXPConnect::GetSingleton()
1.148 +{
1.149 + nsXPConnect* xpc = nsXPConnect::XPConnect();
1.150 + NS_IF_ADDREF(xpc);
1.151 + return xpc;
1.152 +}
1.153 +
1.154 +// static
1.155 +void
1.156 +nsXPConnect::ReleaseXPConnectSingleton()
1.157 +{
1.158 + nsXPConnect* xpc = gSelf;
1.159 + if (xpc) {
1.160 + nsThread::SetMainThreadObserver(nullptr);
1.161 +
1.162 + nsrefcnt cnt;
1.163 + NS_RELEASE2(xpc, cnt);
1.164 + }
1.165 +}
1.166 +
1.167 +// static
1.168 +XPCJSRuntime*
1.169 +nsXPConnect::GetRuntimeInstance()
1.170 +{
1.171 + nsXPConnect* xpc = XPConnect();
1.172 + return xpc->GetRuntime();
1.173 +}
1.174 +
1.175 +// static
1.176 +bool
1.177 +nsXPConnect::IsISupportsDescendant(nsIInterfaceInfo* info)
1.178 +{
1.179 + bool found = false;
1.180 + if (info)
1.181 + info->HasAncestor(&NS_GET_IID(nsISupports), &found);
1.182 + return found;
1.183 +}
1.184 +
1.185 +void
1.186 +xpc::SystemErrorReporter(JSContext *cx, const char *message, JSErrorReport *rep)
1.187 +{
1.188 + // It would be nice to assert !DescribeScriptedCaller here, to be sure
1.189 + // that there isn't any script running that could catch the exception. But
1.190 + // the JS engine invokes the error reporter directly if someone reports an
1.191 + // ErrorReport that it doesn't know how to turn into an exception. Arguably
1.192 + // it should just learn how to throw everything. But either way, if the
1.193 + // exception is ending here, it's not going to get propagated to a caller,
1.194 + // so it's up to us to make it known.
1.195 +
1.196 + nsresult rv;
1.197 +
1.198 + /* Use the console service to register the error. */
1.199 + nsCOMPtr<nsIConsoleService> consoleService =
1.200 + do_GetService(NS_CONSOLESERVICE_CONTRACTID);
1.201 +
1.202 + /*
1.203 + * Make an nsIScriptError, populate it with information from this
1.204 + * error, then log it with the console service.
1.205 + */
1.206 + nsCOMPtr<nsIScriptError> errorObject =
1.207 + do_CreateInstance(NS_SCRIPTERROR_CONTRACTID);
1.208 +
1.209 + if (consoleService && errorObject) {
1.210 + uint32_t column = rep->uctokenptr - rep->uclinebuf;
1.211 +
1.212 + const char16_t* ucmessage =
1.213 + static_cast<const char16_t*>(rep->ucmessage);
1.214 + const char16_t* uclinebuf =
1.215 + static_cast<const char16_t*>(rep->uclinebuf);
1.216 +
1.217 + rv = errorObject->Init(
1.218 + ucmessage ? nsDependentString(ucmessage) : EmptyString(),
1.219 + NS_ConvertASCIItoUTF16(rep->filename),
1.220 + uclinebuf ? nsDependentString(uclinebuf) : EmptyString(),
1.221 + rep->lineno, column, rep->flags,
1.222 + "system javascript");
1.223 + if (NS_SUCCEEDED(rv))
1.224 + consoleService->LogMessage(errorObject);
1.225 + }
1.226 +
1.227 + if (nsContentUtils::DOMWindowDumpEnabled()) {
1.228 + fprintf(stderr, "System JS : %s %s:%d - %s\n",
1.229 + JSREPORT_IS_WARNING(rep->flags) ? "WARNING" : "ERROR",
1.230 + rep->filename, rep->lineno,
1.231 + message ? message : "<no message>");
1.232 + }
1.233 +
1.234 +}
1.235 +
1.236 +
1.237 +/***************************************************************************/
1.238 +
1.239 +
1.240 +nsresult
1.241 +nsXPConnect::GetInfoForIID(const nsIID * aIID, nsIInterfaceInfo** info)
1.242 +{
1.243 + return XPTInterfaceInfoManager::GetSingleton()->GetInfoForIID(aIID, info);
1.244 +}
1.245 +
1.246 +nsresult
1.247 +nsXPConnect::GetInfoForName(const char * name, nsIInterfaceInfo** info)
1.248 +{
1.249 + nsresult rv = XPTInterfaceInfoManager::GetSingleton()->GetInfoForName(name, info);
1.250 + return NS_FAILED(rv) ? NS_OK : NS_ERROR_NO_INTERFACE;
1.251 +}
1.252 +
1.253 +NS_IMETHODIMP
1.254 +nsXPConnect::GarbageCollect(uint32_t reason)
1.255 +{
1.256 + GetRuntime()->Collect(reason);
1.257 + return NS_OK;
1.258 +}
1.259 +
1.260 +bool
1.261 +xpc_GCThingIsGrayCCThing(void *thing)
1.262 +{
1.263 + return AddToCCKind(js::GCThingTraceKind(thing)) &&
1.264 + xpc_IsGrayGCThing(thing);
1.265 +}
1.266 +
1.267 +void
1.268 +xpc_MarkInCCGeneration(nsISupports* aVariant, uint32_t aGeneration)
1.269 +{
1.270 + nsCOMPtr<XPCVariant> variant = do_QueryInterface(aVariant);
1.271 + if (variant) {
1.272 + variant->SetCCGeneration(aGeneration);
1.273 + variant->GetJSVal(); // Unmarks gray JSObject.
1.274 + XPCVariant* weak = variant.get();
1.275 + variant = nullptr;
1.276 + if (weak->IsPurple()) {
1.277 + weak->RemovePurple();
1.278 + }
1.279 + }
1.280 +}
1.281 +
1.282 +void
1.283 +xpc_TryUnmarkWrappedGrayObject(nsISupports* aWrappedJS)
1.284 +{
1.285 + nsCOMPtr<nsIXPConnectWrappedJS> wjs = do_QueryInterface(aWrappedJS);
1.286 + if (wjs) {
1.287 + // Unmarks gray JSObject.
1.288 + static_cast<nsXPCWrappedJS*>(wjs.get())->GetJSObject();
1.289 + }
1.290 +}
1.291 +
1.292 +/***************************************************************************/
1.293 +/***************************************************************************/
1.294 +// nsIXPConnect interface methods...
1.295 +
1.296 +template<typename T>
1.297 +static inline T UnexpectedFailure(T rv)
1.298 +{
1.299 + NS_ERROR("This is not supposed to fail!");
1.300 + return rv;
1.301 +}
1.302 +
1.303 +/* void initClasses (in JSContextPtr aJSContext, in JSObjectPtr aGlobalJSObj); */
1.304 +NS_IMETHODIMP
1.305 +nsXPConnect::InitClasses(JSContext * aJSContext, JSObject * aGlobalJSObj)
1.306 +{
1.307 + MOZ_ASSERT(aJSContext, "bad param");
1.308 + MOZ_ASSERT(aGlobalJSObj, "bad param");
1.309 + RootedObject globalJSObj(aJSContext, aGlobalJSObj);
1.310 +
1.311 + JSAutoCompartment ac(aJSContext, globalJSObj);
1.312 +
1.313 + XPCWrappedNativeScope* scope =
1.314 + XPCWrappedNativeScope::GetNewOrUsed(aJSContext, globalJSObj);
1.315 +
1.316 + if (!scope)
1.317 + return UnexpectedFailure(NS_ERROR_FAILURE);
1.318 +
1.319 + scope->RemoveWrappedNativeProtos();
1.320 +
1.321 + if (!XPCNativeWrapper::AttachNewConstructorObject(aJSContext, globalJSObj))
1.322 + return UnexpectedFailure(NS_ERROR_FAILURE);
1.323 +
1.324 + return NS_OK;
1.325 +}
1.326 +
1.327 +#ifdef DEBUG
1.328 +static void
1.329 +VerifyTraceXPCGlobalCalled(JSTracer *trc, void **thingp, JSGCTraceKind kind)
1.330 +{
1.331 + // We don't do anything here, we only want to verify that TraceXPCGlobal
1.332 + // was called.
1.333 +}
1.334 +
1.335 +struct VerifyTraceXPCGlobalCalledTracer : public JSTracer
1.336 +{
1.337 + bool ok;
1.338 +
1.339 + VerifyTraceXPCGlobalCalledTracer(JSRuntime *rt)
1.340 + : JSTracer(rt, VerifyTraceXPCGlobalCalled), ok(false)
1.341 + {}
1.342 +};
1.343 +#endif
1.344 +
1.345 +void
1.346 +xpc::TraceXPCGlobal(JSTracer *trc, JSObject *obj)
1.347 +{
1.348 +#ifdef DEBUG
1.349 + if (trc->callback == VerifyTraceXPCGlobalCalled) {
1.350 + // We don't do anything here, we only want to verify that TraceXPCGlobal
1.351 + // was called.
1.352 + reinterpret_cast<VerifyTraceXPCGlobalCalledTracer*>(trc)->ok = true;
1.353 + return;
1.354 + }
1.355 +#endif
1.356 +
1.357 + if (js::GetObjectClass(obj)->flags & JSCLASS_DOM_GLOBAL)
1.358 + mozilla::dom::TraceProtoAndIfaceCache(trc, obj);
1.359 +
1.360 + // We might be called from a GC during the creation of a global, before we've
1.361 + // been able to set up the compartment private or the XPCWrappedNativeScope,
1.362 + // so we need to null-check those.
1.363 + xpc::CompartmentPrivate* compartmentPrivate = GetCompartmentPrivate(obj);
1.364 + if (compartmentPrivate && compartmentPrivate->scope)
1.365 + compartmentPrivate->scope->TraceInside(trc);
1.366 +}
1.367 +
1.368 +namespace xpc {
1.369 +
1.370 +JSObject*
1.371 +CreateGlobalObject(JSContext *cx, const JSClass *clasp, nsIPrincipal *principal,
1.372 + JS::CompartmentOptions& aOptions)
1.373 +{
1.374 + MOZ_ASSERT(NS_IsMainThread(), "using a principal off the main thread?");
1.375 + MOZ_ASSERT(principal);
1.376 +
1.377 + RootedObject global(cx,
1.378 + JS_NewGlobalObject(cx, clasp, nsJSPrincipals::get(principal),
1.379 + JS::DontFireOnNewGlobalHook, aOptions));
1.380 + if (!global)
1.381 + return nullptr;
1.382 + JSAutoCompartment ac(cx, global);
1.383 +
1.384 + // The constructor automatically attaches the scope to the compartment private
1.385 + // of |global|.
1.386 + (void) new XPCWrappedNativeScope(cx, global);
1.387 +
1.388 +#ifdef DEBUG
1.389 + // Verify that the right trace hook is called. Note that this doesn't
1.390 + // work right for wrapped globals, since the tracing situation there is
1.391 + // more complicated. Manual inspection shows that they do the right thing.
1.392 + if (!((const js::Class*)clasp)->ext.isWrappedNative)
1.393 + {
1.394 + VerifyTraceXPCGlobalCalledTracer trc(JS_GetRuntime(cx));
1.395 + JS_TraceChildren(&trc, global, JSTRACE_OBJECT);
1.396 + MOZ_ASSERT(trc.ok, "Trace hook on global needs to call TraceXPCGlobal for XPConnect compartments.");
1.397 + }
1.398 +#endif
1.399 +
1.400 + if (clasp->flags & JSCLASS_DOM_GLOBAL) {
1.401 + const char* className = clasp->name;
1.402 + AllocateProtoAndIfaceCache(global,
1.403 + (strcmp(className, "Window") == 0 ||
1.404 + strcmp(className, "ChromeWindow") == 0)
1.405 + ? ProtoAndIfaceCache::WindowLike
1.406 + : ProtoAndIfaceCache::NonWindowLike);
1.407 + }
1.408 +
1.409 + return global;
1.410 +}
1.411 +
1.412 +bool
1.413 +InitGlobalObject(JSContext* aJSContext, JS::Handle<JSObject*> aGlobal, uint32_t aFlags)
1.414 +{
1.415 + // Immediately enter the global's compartment, so that everything else we
1.416 + // create ends up there.
1.417 + JSAutoCompartment ac(aJSContext, aGlobal);
1.418 + if (!(aFlags & nsIXPConnect::OMIT_COMPONENTS_OBJECT)) {
1.419 + // XPCCallContext gives us an active request needed to save/restore.
1.420 + if (!GetCompartmentPrivate(aGlobal)->scope->AttachComponentsObject(aJSContext) ||
1.421 + !XPCNativeWrapper::AttachNewConstructorObject(aJSContext, aGlobal)) {
1.422 + return UnexpectedFailure(false);
1.423 + }
1.424 + }
1.425 +
1.426 + if (ShouldDiscardSystemSource()) {
1.427 + nsIPrincipal *prin = GetObjectPrincipal(aGlobal);
1.428 + bool isSystem = nsContentUtils::IsSystemPrincipal(prin);
1.429 + if (!isSystem) {
1.430 + short status = prin->GetAppStatus();
1.431 + isSystem = status == nsIPrincipal::APP_STATUS_PRIVILEGED ||
1.432 + status == nsIPrincipal::APP_STATUS_CERTIFIED;
1.433 + }
1.434 + JS::CompartmentOptionsRef(aGlobal).setDiscardSource(isSystem);
1.435 + }
1.436 +
1.437 + // Stuff coming through this path always ends up as a DOM global.
1.438 + MOZ_ASSERT(js::GetObjectClass(aGlobal)->flags & JSCLASS_DOM_GLOBAL);
1.439 +
1.440 + // Init WebIDL binding constructors wanted on all XPConnect globals.
1.441 + //
1.442 + // XXX Please do not add any additional classes here without the approval of
1.443 + // the XPConnect module owner.
1.444 + if (!PromiseBinding::GetConstructorObject(aJSContext, aGlobal) ||
1.445 + !TextDecoderBinding::GetConstructorObject(aJSContext, aGlobal) ||
1.446 + !TextEncoderBinding::GetConstructorObject(aJSContext, aGlobal) ||
1.447 + !DOMErrorBinding::GetConstructorObject(aJSContext, aGlobal)) {
1.448 + return UnexpectedFailure(false);
1.449 + }
1.450 +
1.451 + if (!(aFlags & nsIXPConnect::DONT_FIRE_ONNEWGLOBALHOOK))
1.452 + JS_FireOnNewGlobalObject(aJSContext, aGlobal);
1.453 +
1.454 + return true;
1.455 +}
1.456 +
1.457 +} // namespace xpc
1.458 +
1.459 +NS_IMETHODIMP
1.460 +nsXPConnect::InitClassesWithNewWrappedGlobal(JSContext * aJSContext,
1.461 + nsISupports *aCOMObj,
1.462 + nsIPrincipal * aPrincipal,
1.463 + uint32_t aFlags,
1.464 + JS::CompartmentOptions& aOptions,
1.465 + nsIXPConnectJSObjectHolder **_retval)
1.466 +{
1.467 + MOZ_ASSERT(aJSContext, "bad param");
1.468 + MOZ_ASSERT(aCOMObj, "bad param");
1.469 + MOZ_ASSERT(_retval, "bad param");
1.470 +
1.471 + // We pass null for the 'extra' pointer during global object creation, so
1.472 + // we need to have a principal.
1.473 + MOZ_ASSERT(aPrincipal);
1.474 +
1.475 + // Call into XPCWrappedNative to make a new global object, scope, and global
1.476 + // prototype.
1.477 + xpcObjectHelper helper(aCOMObj);
1.478 + MOZ_ASSERT(helper.GetScriptableFlags() & nsIXPCScriptable::IS_GLOBAL_OBJECT);
1.479 + nsRefPtr<XPCWrappedNative> wrappedGlobal;
1.480 + nsresult rv =
1.481 + XPCWrappedNative::WrapNewGlobal(helper, aPrincipal,
1.482 + aFlags & nsIXPConnect::INIT_JS_STANDARD_CLASSES,
1.483 + aOptions, getter_AddRefs(wrappedGlobal));
1.484 + NS_ENSURE_SUCCESS(rv, rv);
1.485 +
1.486 + // Grab a copy of the global and enter its compartment.
1.487 + RootedObject global(aJSContext, wrappedGlobal->GetFlatJSObject());
1.488 + MOZ_ASSERT(!js::GetObjectParent(global));
1.489 +
1.490 + if (!InitGlobalObject(aJSContext, global, aFlags))
1.491 + return UnexpectedFailure(NS_ERROR_FAILURE);
1.492 +
1.493 + wrappedGlobal.forget(_retval);
1.494 + return NS_OK;
1.495 +}
1.496 +
1.497 +static nsresult
1.498 +NativeInterface2JSObject(HandleObject aScope,
1.499 + nsISupports *aCOMObj,
1.500 + nsWrapperCache *aCache,
1.501 + const nsIID * aIID,
1.502 + bool aAllowWrapping,
1.503 + MutableHandleValue aVal,
1.504 + nsIXPConnectJSObjectHolder **aHolder)
1.505 +{
1.506 + AutoJSContext cx;
1.507 + JSAutoCompartment ac(cx, aScope);
1.508 +
1.509 + nsresult rv;
1.510 + xpcObjectHelper helper(aCOMObj, aCache);
1.511 + if (!XPCConvert::NativeInterface2JSObject(aVal, aHolder, helper, aIID,
1.512 + nullptr, aAllowWrapping, &rv))
1.513 + return rv;
1.514 +
1.515 + MOZ_ASSERT(aAllowWrapping || !xpc::WrapperFactory::IsXrayWrapper(&aVal.toObject()),
1.516 + "Shouldn't be returning a xray wrapper here");
1.517 +
1.518 + return NS_OK;
1.519 +}
1.520 +
1.521 +/* nsIXPConnectJSObjectHolder wrapNative (in JSContextPtr aJSContext, in JSObjectPtr aScope, in nsISupports aCOMObj, in nsIIDRef aIID); */
1.522 +NS_IMETHODIMP
1.523 +nsXPConnect::WrapNative(JSContext * aJSContext,
1.524 + JSObject * aScopeArg,
1.525 + nsISupports *aCOMObj,
1.526 + const nsIID & aIID,
1.527 + nsIXPConnectJSObjectHolder **aHolder)
1.528 +{
1.529 + MOZ_ASSERT(aHolder, "bad param");
1.530 + MOZ_ASSERT(aJSContext, "bad param");
1.531 + MOZ_ASSERT(aScopeArg, "bad param");
1.532 + MOZ_ASSERT(aCOMObj, "bad param");
1.533 +
1.534 + RootedObject aScope(aJSContext, aScopeArg);
1.535 + RootedValue v(aJSContext);
1.536 + return NativeInterface2JSObject(aScope, aCOMObj, nullptr, &aIID,
1.537 + true, &v, aHolder);
1.538 +}
1.539 +
1.540 +/* void wrapNativeToJSVal (in JSContextPtr aJSContext, in JSObjectPtr aScope, in nsISupports aCOMObj, in nsIIDPtr aIID, out jsval aVal, out nsIXPConnectJSObjectHolder aHolder); */
1.541 +NS_IMETHODIMP
1.542 +nsXPConnect::WrapNativeToJSVal(JSContext *aJSContext,
1.543 + JSObject *aScopeArg,
1.544 + nsISupports *aCOMObj,
1.545 + nsWrapperCache *aCache,
1.546 + const nsIID *aIID,
1.547 + bool aAllowWrapping,
1.548 + MutableHandleValue aVal)
1.549 +{
1.550 + MOZ_ASSERT(aJSContext, "bad param");
1.551 + MOZ_ASSERT(aScopeArg, "bad param");
1.552 + MOZ_ASSERT(aCOMObj, "bad param");
1.553 +
1.554 + RootedObject aScope(aJSContext, aScopeArg);
1.555 + return NativeInterface2JSObject(aScope, aCOMObj, aCache, aIID,
1.556 + aAllowWrapping, aVal, nullptr);
1.557 +}
1.558 +
1.559 +/* void wrapJS (in JSContextPtr aJSContext, in JSObjectPtr aJSObj, in nsIIDRef aIID, [iid_is (aIID), retval] out nsQIResult result); */
1.560 +NS_IMETHODIMP
1.561 +nsXPConnect::WrapJS(JSContext * aJSContext,
1.562 + JSObject * aJSObjArg,
1.563 + const nsIID & aIID,
1.564 + void * *result)
1.565 +{
1.566 + MOZ_ASSERT(aJSContext, "bad param");
1.567 + MOZ_ASSERT(aJSObjArg, "bad param");
1.568 + MOZ_ASSERT(result, "bad param");
1.569 +
1.570 + *result = nullptr;
1.571 +
1.572 + RootedObject aJSObj(aJSContext, aJSObjArg);
1.573 + JSAutoCompartment ac(aJSContext, aJSObj);
1.574 +
1.575 + nsresult rv = NS_ERROR_UNEXPECTED;
1.576 + if (!XPCConvert::JSObject2NativeInterface(result, aJSObj,
1.577 + &aIID, nullptr, &rv))
1.578 + return rv;
1.579 + return NS_OK;
1.580 +}
1.581 +
1.582 +NS_IMETHODIMP
1.583 +nsXPConnect::JSValToVariant(JSContext *cx,
1.584 + HandleValue aJSVal,
1.585 + nsIVariant **aResult)
1.586 +{
1.587 + NS_PRECONDITION(aResult, "bad param");
1.588 +
1.589 + nsRefPtr<XPCVariant> variant = XPCVariant::newVariant(cx, aJSVal);
1.590 + variant.forget(aResult);
1.591 + NS_ENSURE_TRUE(*aResult, NS_ERROR_OUT_OF_MEMORY);
1.592 +
1.593 + return NS_OK;
1.594 +}
1.595 +
1.596 +/* void wrapJSAggregatedToNative (in nsISupports aOuter, in JSContextPtr aJSContext, in JSObjectPtr aJSObj, in nsIIDRef aIID, [iid_is (aIID), retval] out nsQIResult result); */
1.597 +NS_IMETHODIMP
1.598 +nsXPConnect::WrapJSAggregatedToNative(nsISupports *aOuter,
1.599 + JSContext *aJSContext,
1.600 + JSObject *aJSObjArg,
1.601 + const nsIID &aIID,
1.602 + void **result)
1.603 +{
1.604 + MOZ_ASSERT(aOuter, "bad param");
1.605 + MOZ_ASSERT(aJSContext, "bad param");
1.606 + MOZ_ASSERT(aJSObjArg, "bad param");
1.607 + MOZ_ASSERT(result, "bad param");
1.608 +
1.609 + *result = nullptr;
1.610 +
1.611 + RootedObject aJSObj(aJSContext, aJSObjArg);
1.612 + nsresult rv;
1.613 + if (!XPCConvert::JSObject2NativeInterface(result, aJSObj,
1.614 + &aIID, aOuter, &rv))
1.615 + return rv;
1.616 + return NS_OK;
1.617 +}
1.618 +
1.619 +/* nsIXPConnectWrappedNative getWrappedNativeOfJSObject (in JSContextPtr aJSContext, in JSObjectPtr aJSObj); */
1.620 +NS_IMETHODIMP
1.621 +nsXPConnect::GetWrappedNativeOfJSObject(JSContext * aJSContext,
1.622 + JSObject * aJSObjArg,
1.623 + nsIXPConnectWrappedNative **_retval)
1.624 +{
1.625 + MOZ_ASSERT(aJSContext, "bad param");
1.626 + MOZ_ASSERT(aJSObjArg, "bad param");
1.627 + MOZ_ASSERT(_retval, "bad param");
1.628 +
1.629 + RootedObject aJSObj(aJSContext, aJSObjArg);
1.630 + aJSObj = js::CheckedUnwrap(aJSObj, /* stopAtOuter = */ false);
1.631 + if (!aJSObj || !IS_WN_REFLECTOR(aJSObj)) {
1.632 + *_retval = nullptr;
1.633 + return NS_ERROR_FAILURE;
1.634 + }
1.635 +
1.636 + nsRefPtr<XPCWrappedNative> temp = XPCWrappedNative::Get(aJSObj);
1.637 + temp.forget(_retval);
1.638 + return NS_OK;
1.639 +}
1.640 +
1.641 +/* nsISupports getNativeOfWrapper(in JSContextPtr aJSContext, in JSObjectPtr aJSObj); */
1.642 +NS_IMETHODIMP_(nsISupports*)
1.643 +nsXPConnect::GetNativeOfWrapper(JSContext *aJSContext,
1.644 + JSObject *aJSObj)
1.645 +{
1.646 + MOZ_ASSERT(aJSContext, "bad param");
1.647 + MOZ_ASSERT(aJSObj, "bad param");
1.648 +
1.649 + aJSObj = js::CheckedUnwrap(aJSObj, /* stopAtOuter = */ false);
1.650 + if (!aJSObj) {
1.651 + JS_ReportError(aJSContext, "Permission denied to get native of security wrapper");
1.652 + return nullptr;
1.653 + }
1.654 + if (IS_WN_REFLECTOR(aJSObj)) {
1.655 + if (XPCWrappedNative *wn = XPCWrappedNative::Get(aJSObj))
1.656 + return wn->Native();
1.657 + return nullptr;
1.658 + }
1.659 +
1.660 + nsCOMPtr<nsISupports> canonical =
1.661 + do_QueryInterface(mozilla::dom::UnwrapDOMObjectToISupports(aJSObj));
1.662 + return canonical;
1.663 +}
1.664 +
1.665 +/* nsIXPConnectWrappedNative getWrappedNativeOfNativeObject (in JSContextPtr aJSContext, in JSObjectPtr aScope, in nsISupports aCOMObj, in nsIIDRef aIID); */
1.666 +NS_IMETHODIMP
1.667 +nsXPConnect::GetWrappedNativeOfNativeObject(JSContext * aJSContext,
1.668 + JSObject * aScopeArg,
1.669 + nsISupports *aCOMObj,
1.670 + const nsIID & aIID,
1.671 + nsIXPConnectWrappedNative **_retval)
1.672 +{
1.673 + MOZ_ASSERT(aJSContext, "bad param");
1.674 + MOZ_ASSERT(aScopeArg, "bad param");
1.675 + MOZ_ASSERT(aCOMObj, "bad param");
1.676 + MOZ_ASSERT(_retval, "bad param");
1.677 +
1.678 + *_retval = nullptr;
1.679 +
1.680 + RootedObject aScope(aJSContext, aScopeArg);
1.681 +
1.682 + XPCWrappedNativeScope* scope = GetObjectScope(aScope);
1.683 + if (!scope)
1.684 + return UnexpectedFailure(NS_ERROR_FAILURE);
1.685 +
1.686 + AutoMarkingNativeInterfacePtr iface(aJSContext);
1.687 + iface = XPCNativeInterface::GetNewOrUsed(&aIID);
1.688 + if (!iface)
1.689 + return NS_ERROR_FAILURE;
1.690 +
1.691 + XPCWrappedNative* wrapper;
1.692 +
1.693 + nsresult rv = XPCWrappedNative::GetUsedOnly(aCOMObj, scope, iface, &wrapper);
1.694 + if (NS_FAILED(rv))
1.695 + return NS_ERROR_FAILURE;
1.696 + *_retval = static_cast<nsIXPConnectWrappedNative*>(wrapper);
1.697 + return NS_OK;
1.698 +}
1.699 +
1.700 +/* void reparentWrappedNativeIfFound (in JSContextPtr aJSContext,
1.701 + * in JSObjectPtr aScope,
1.702 + * in JSObjectPtr aNewParent,
1.703 + * in nsISupports aCOMObj); */
1.704 +NS_IMETHODIMP
1.705 +nsXPConnect::ReparentWrappedNativeIfFound(JSContext * aJSContext,
1.706 + JSObject * aScopeArg,
1.707 + JSObject * aNewParentArg,
1.708 + nsISupports *aCOMObj)
1.709 +{
1.710 + RootedObject aScope(aJSContext, aScopeArg);
1.711 + RootedObject aNewParent(aJSContext, aNewParentArg);
1.712 +
1.713 + XPCWrappedNativeScope* scope = GetObjectScope(aScope);
1.714 + XPCWrappedNativeScope* scope2 = GetObjectScope(aNewParent);
1.715 + if (!scope || !scope2)
1.716 + return UnexpectedFailure(NS_ERROR_FAILURE);
1.717 +
1.718 + RootedObject newParent(aJSContext, aNewParent);
1.719 + return XPCWrappedNative::
1.720 + ReparentWrapperIfFound(scope, scope2, newParent, aCOMObj);
1.721 +}
1.722 +
1.723 +static PLDHashOperator
1.724 +MoveableWrapperFinder(PLDHashTable *table, PLDHashEntryHdr *hdr,
1.725 + uint32_t number, void *arg)
1.726 +{
1.727 + nsTArray<nsRefPtr<XPCWrappedNative> > *array =
1.728 + static_cast<nsTArray<nsRefPtr<XPCWrappedNative> > *>(arg);
1.729 + XPCWrappedNative *wn = ((Native2WrappedNativeMap::Entry*)hdr)->value;
1.730 +
1.731 + // If a wrapper is expired, then there are no references to it from JS, so
1.732 + // we don't have to move it.
1.733 + if (!wn->IsWrapperExpired())
1.734 + array->AppendElement(wn);
1.735 + return PL_DHASH_NEXT;
1.736 +}
1.737 +
1.738 +/* void rescueOrphansInScope(in JSContextPtr aJSContext, in JSObjectPtr aScope); */
1.739 +NS_IMETHODIMP
1.740 +nsXPConnect::RescueOrphansInScope(JSContext *aJSContext, JSObject *aScopeArg)
1.741 +{
1.742 + RootedObject aScope(aJSContext, aScopeArg);
1.743 +
1.744 + XPCWrappedNativeScope *scope = GetObjectScope(aScope);
1.745 + if (!scope)
1.746 + return UnexpectedFailure(NS_ERROR_FAILURE);
1.747 +
1.748 + // First, look through the old scope and find all of the wrappers that we
1.749 + // might need to rescue.
1.750 + nsTArray<nsRefPtr<XPCWrappedNative> > wrappersToMove;
1.751 +
1.752 + Native2WrappedNativeMap *map = scope->GetWrappedNativeMap();
1.753 + wrappersToMove.SetCapacity(map->Count());
1.754 + map->Enumerate(MoveableWrapperFinder, &wrappersToMove);
1.755 +
1.756 + // Now that we have the wrappers, reparent them to the new scope.
1.757 + for (uint32_t i = 0, stop = wrappersToMove.Length(); i < stop; ++i) {
1.758 + nsresult rv = wrappersToMove[i]->RescueOrphans();
1.759 + NS_ENSURE_SUCCESS(rv, rv);
1.760 + }
1.761 +
1.762 + return NS_OK;
1.763 +}
1.764 +
1.765 +/* void setDefaultSecurityManager (in nsIXPCSecurityManager aManager); */
1.766 +NS_IMETHODIMP
1.767 +nsXPConnect::SetDefaultSecurityManager(nsIXPCSecurityManager *aManager)
1.768 +{
1.769 + mDefaultSecurityManager = aManager;
1.770 +
1.771 + nsCOMPtr<nsIScriptSecurityManager> ssm =
1.772 + do_QueryInterface(mDefaultSecurityManager);
1.773 +
1.774 + // Remember the result of the above QI for fast access to the
1.775 + // script securityt manager.
1.776 + gScriptSecurityManager = ssm;
1.777 +
1.778 + return NS_OK;
1.779 +}
1.780 +
1.781 +/* nsIStackFrame createStackFrameLocation (in uint32_t aLanguage, in string aFilename, in string aFunctionName, in int32_t aLineNumber, in nsIStackFrame aCaller); */
1.782 +NS_IMETHODIMP
1.783 +nsXPConnect::CreateStackFrameLocation(uint32_t aLanguage,
1.784 + const char *aFilename,
1.785 + const char *aFunctionName,
1.786 + int32_t aLineNumber,
1.787 + nsIStackFrame *aCaller,
1.788 + nsIStackFrame **_retval)
1.789 +{
1.790 + MOZ_ASSERT(_retval, "bad param");
1.791 +
1.792 + nsCOMPtr<nsIStackFrame> stackFrame =
1.793 + exceptions::CreateStackFrameLocation(aLanguage,
1.794 + aFilename,
1.795 + aFunctionName,
1.796 + aLineNumber,
1.797 + aCaller);
1.798 + stackFrame.forget(_retval);
1.799 + return NS_OK;
1.800 +}
1.801 +
1.802 +/* readonly attribute nsIStackFrame CurrentJSStack; */
1.803 +NS_IMETHODIMP
1.804 +nsXPConnect::GetCurrentJSStack(nsIStackFrame * *aCurrentJSStack)
1.805 +{
1.806 + MOZ_ASSERT(aCurrentJSStack, "bad param");
1.807 +
1.808 + nsCOMPtr<nsIStackFrame> currentStack = dom::GetCurrentJSStack();
1.809 + currentStack.forget(aCurrentJSStack);
1.810 +
1.811 + return NS_OK;
1.812 +}
1.813 +
1.814 +/* readonly attribute nsIXPCNativeCallContext CurrentNativeCallContext; */
1.815 +NS_IMETHODIMP
1.816 +nsXPConnect::GetCurrentNativeCallContext(nsAXPCNativeCallContext * *aCurrentNativeCallContext)
1.817 +{
1.818 + MOZ_ASSERT(aCurrentNativeCallContext, "bad param");
1.819 +
1.820 + *aCurrentNativeCallContext = XPCJSRuntime::Get()->GetCallContext();
1.821 + return NS_OK;
1.822 +}
1.823 +
1.824 +/* void setFunctionThisTranslator (in nsIIDRef aIID, in nsIXPCFunctionThisTranslator aTranslator); */
1.825 +NS_IMETHODIMP
1.826 +nsXPConnect::SetFunctionThisTranslator(const nsIID & aIID,
1.827 + nsIXPCFunctionThisTranslator *aTranslator)
1.828 +{
1.829 + XPCJSRuntime* rt = GetRuntime();
1.830 + IID2ThisTranslatorMap* map = rt->GetThisTranslatorMap();
1.831 + map->Add(aIID, aTranslator);
1.832 + return NS_OK;
1.833 +}
1.834 +
1.835 +NS_IMETHODIMP
1.836 +nsXPConnect::CreateSandbox(JSContext *cx, nsIPrincipal *principal,
1.837 + nsIXPConnectJSObjectHolder **_retval)
1.838 +{
1.839 + *_retval = nullptr;
1.840 +
1.841 + RootedValue rval(cx);
1.842 + SandboxOptions options;
1.843 + nsresult rv = CreateSandboxObject(cx, &rval, principal, options);
1.844 + MOZ_ASSERT(NS_FAILED(rv) || !JSVAL_IS_PRIMITIVE(rval),
1.845 + "Bad return value from xpc_CreateSandboxObject()!");
1.846 +
1.847 + if (NS_SUCCEEDED(rv) && !JSVAL_IS_PRIMITIVE(rval)) {
1.848 + *_retval = XPCJSObjectHolder::newHolder(JSVAL_TO_OBJECT(rval));
1.849 + NS_ENSURE_TRUE(*_retval, NS_ERROR_OUT_OF_MEMORY);
1.850 +
1.851 + NS_ADDREF(*_retval);
1.852 + }
1.853 +
1.854 + return rv;
1.855 +}
1.856 +
1.857 +NS_IMETHODIMP
1.858 +nsXPConnect::EvalInSandboxObject(const nsAString& source, const char *filename,
1.859 + JSContext *cx, JSObject *sandboxArg,
1.860 + bool returnStringOnly, MutableHandleValue rval)
1.861 +{
1.862 + if (!sandboxArg)
1.863 + return NS_ERROR_INVALID_ARG;
1.864 +
1.865 + RootedObject sandbox(cx, sandboxArg);
1.866 + nsCString filenameStr;
1.867 + if (filename) {
1.868 + filenameStr.Assign(filename);
1.869 + } else {
1.870 + filenameStr = NS_LITERAL_CSTRING("x-bogus://XPConnect/Sandbox");
1.871 + }
1.872 + return EvalInSandbox(cx, sandbox, source, filenameStr, 1,
1.873 + JSVERSION_DEFAULT, returnStringOnly, rval);
1.874 +}
1.875 +
1.876 +/* nsIXPConnectJSObjectHolder getWrappedNativePrototype (in JSContextPtr aJSContext, in JSObjectPtr aScope, in nsIClassInfo aClassInfo); */
1.877 +NS_IMETHODIMP
1.878 +nsXPConnect::GetWrappedNativePrototype(JSContext * aJSContext,
1.879 + JSObject * aScopeArg,
1.880 + nsIClassInfo *aClassInfo,
1.881 + nsIXPConnectJSObjectHolder **_retval)
1.882 +{
1.883 + RootedObject aScope(aJSContext, aScopeArg);
1.884 + JSAutoCompartment ac(aJSContext, aScope);
1.885 +
1.886 + XPCWrappedNativeScope* scope = GetObjectScope(aScope);
1.887 + if (!scope)
1.888 + return UnexpectedFailure(NS_ERROR_FAILURE);
1.889 +
1.890 + XPCNativeScriptableCreateInfo sciProto;
1.891 + XPCWrappedNative::GatherProtoScriptableCreateInfo(aClassInfo, sciProto);
1.892 +
1.893 + AutoMarkingWrappedNativeProtoPtr proto(aJSContext);
1.894 + proto = XPCWrappedNativeProto::GetNewOrUsed(scope, aClassInfo, &sciProto);
1.895 + if (!proto)
1.896 + return UnexpectedFailure(NS_ERROR_FAILURE);
1.897 +
1.898 + nsIXPConnectJSObjectHolder* holder;
1.899 + *_retval = holder = XPCJSObjectHolder::newHolder(proto->GetJSProtoObject());
1.900 + if (!holder)
1.901 + return UnexpectedFailure(NS_ERROR_FAILURE);
1.902 +
1.903 + NS_ADDREF(holder);
1.904 + return NS_OK;
1.905 +}
1.906 +
1.907 +/* void debugDump (in short depth); */
1.908 +NS_IMETHODIMP
1.909 +nsXPConnect::DebugDump(int16_t depth)
1.910 +{
1.911 +#ifdef DEBUG
1.912 + depth-- ;
1.913 + XPC_LOG_ALWAYS(("nsXPConnect @ %x with mRefCnt = %d", this, mRefCnt.get()));
1.914 + XPC_LOG_INDENT();
1.915 + XPC_LOG_ALWAYS(("gSelf @ %x", gSelf));
1.916 + XPC_LOG_ALWAYS(("gOnceAliveNowDead is %d", (int)gOnceAliveNowDead));
1.917 + XPC_LOG_ALWAYS(("mDefaultSecurityManager @ %x", mDefaultSecurityManager.get()));
1.918 + if (mRuntime) {
1.919 + if (depth)
1.920 + mRuntime->DebugDump(depth);
1.921 + else
1.922 + XPC_LOG_ALWAYS(("XPCJSRuntime @ %x", mRuntime));
1.923 + } else
1.924 + XPC_LOG_ALWAYS(("mRuntime is null"));
1.925 + XPCWrappedNativeScope::DebugDumpAllScopes(depth);
1.926 + XPC_LOG_OUTDENT();
1.927 +#endif
1.928 + return NS_OK;
1.929 +}
1.930 +
1.931 +/* void debugDumpObject (in nsISupports aCOMObj, in short depth); */
1.932 +NS_IMETHODIMP
1.933 +nsXPConnect::DebugDumpObject(nsISupports *p, int16_t depth)
1.934 +{
1.935 +#ifdef DEBUG
1.936 + if (!depth)
1.937 + return NS_OK;
1.938 + if (!p) {
1.939 + XPC_LOG_ALWAYS(("*** Cound not dump object with NULL address"));
1.940 + return NS_OK;
1.941 + }
1.942 +
1.943 + nsIXPConnect* xpc;
1.944 + nsIXPCWrappedJSClass* wjsc;
1.945 + nsIXPConnectWrappedNative* wn;
1.946 + nsIXPConnectWrappedJS* wjs;
1.947 +
1.948 + if (NS_SUCCEEDED(p->QueryInterface(NS_GET_IID(nsIXPConnect),
1.949 + (void**)&xpc))) {
1.950 + XPC_LOG_ALWAYS(("Dumping a nsIXPConnect..."));
1.951 + xpc->DebugDump(depth);
1.952 + NS_RELEASE(xpc);
1.953 + } else if (NS_SUCCEEDED(p->QueryInterface(NS_GET_IID(nsIXPCWrappedJSClass),
1.954 + (void**)&wjsc))) {
1.955 + XPC_LOG_ALWAYS(("Dumping a nsIXPCWrappedJSClass..."));
1.956 + wjsc->DebugDump(depth);
1.957 + NS_RELEASE(wjsc);
1.958 + } else if (NS_SUCCEEDED(p->QueryInterface(NS_GET_IID(nsIXPConnectWrappedNative),
1.959 + (void**)&wn))) {
1.960 + XPC_LOG_ALWAYS(("Dumping a nsIXPConnectWrappedNative..."));
1.961 + wn->DebugDump(depth);
1.962 + NS_RELEASE(wn);
1.963 + } else if (NS_SUCCEEDED(p->QueryInterface(NS_GET_IID(nsIXPConnectWrappedJS),
1.964 + (void**)&wjs))) {
1.965 + XPC_LOG_ALWAYS(("Dumping a nsIXPConnectWrappedJS..."));
1.966 + wjs->DebugDump(depth);
1.967 + NS_RELEASE(wjs);
1.968 + } else
1.969 + XPC_LOG_ALWAYS(("*** Could not dump the nsISupports @ %x", p));
1.970 +#endif
1.971 + return NS_OK;
1.972 +}
1.973 +
1.974 +/* void debugDumpJSStack (in bool showArgs, in bool showLocals, in bool showThisProps); */
1.975 +NS_IMETHODIMP
1.976 +nsXPConnect::DebugDumpJSStack(bool showArgs,
1.977 + bool showLocals,
1.978 + bool showThisProps)
1.979 +{
1.980 + JSContext* cx = GetCurrentJSContext();
1.981 + if (!cx)
1.982 + printf("there is no JSContext on the nsIThreadJSContextStack!\n");
1.983 + else
1.984 + xpc_DumpJSStack(cx, showArgs, showLocals, showThisProps);
1.985 +
1.986 + return NS_OK;
1.987 +}
1.988 +
1.989 +char*
1.990 +nsXPConnect::DebugPrintJSStack(bool showArgs,
1.991 + bool showLocals,
1.992 + bool showThisProps)
1.993 +{
1.994 + JSContext* cx = GetCurrentJSContext();
1.995 + if (!cx)
1.996 + printf("there is no JSContext on the nsIThreadJSContextStack!\n");
1.997 + else
1.998 + return xpc_PrintJSStack(cx, showArgs, showLocals, showThisProps);
1.999 +
1.1000 + return nullptr;
1.1001 +}
1.1002 +
1.1003 +/* void debugDumpEvalInJSStackFrame (in uint32_t aFrameNumber, in string aSourceText); */
1.1004 +NS_IMETHODIMP
1.1005 +nsXPConnect::DebugDumpEvalInJSStackFrame(uint32_t aFrameNumber, const char *aSourceText)
1.1006 +{
1.1007 + JSContext* cx = GetCurrentJSContext();
1.1008 + if (!cx)
1.1009 + printf("there is no JSContext on the nsIThreadJSContextStack!\n");
1.1010 + else
1.1011 + xpc_DumpEvalInJSStackFrame(cx, aFrameNumber, aSourceText);
1.1012 +
1.1013 + return NS_OK;
1.1014 +}
1.1015 +
1.1016 +/* jsval variantToJS (in JSContextPtr ctx, in JSObjectPtr scope, in nsIVariant value); */
1.1017 +NS_IMETHODIMP
1.1018 +nsXPConnect::VariantToJS(JSContext* ctx, JSObject* scopeArg, nsIVariant* value,
1.1019 + MutableHandleValue _retval)
1.1020 +{
1.1021 + NS_PRECONDITION(ctx, "bad param");
1.1022 + NS_PRECONDITION(scopeArg, "bad param");
1.1023 + NS_PRECONDITION(value, "bad param");
1.1024 +
1.1025 + RootedObject scope(ctx, scopeArg);
1.1026 + MOZ_ASSERT(js::IsObjectInContextCompartment(scope, ctx));
1.1027 +
1.1028 + nsresult rv = NS_OK;
1.1029 + if (!XPCVariant::VariantDataToJS(value, &rv, _retval)) {
1.1030 + if (NS_FAILED(rv))
1.1031 + return rv;
1.1032 +
1.1033 + return NS_ERROR_FAILURE;
1.1034 + }
1.1035 + return NS_OK;
1.1036 +}
1.1037 +
1.1038 +/* nsIVariant JSToVariant (in JSContextPtr ctx, in jsval value); */
1.1039 +NS_IMETHODIMP
1.1040 +nsXPConnect::JSToVariant(JSContext* ctx, HandleValue value, nsIVariant** _retval)
1.1041 +{
1.1042 + NS_PRECONDITION(ctx, "bad param");
1.1043 + NS_PRECONDITION(_retval, "bad param");
1.1044 +
1.1045 + nsRefPtr<XPCVariant> variant = XPCVariant::newVariant(ctx, value);
1.1046 + variant.forget(_retval);
1.1047 + if (!(*_retval))
1.1048 + return NS_ERROR_FAILURE;
1.1049 +
1.1050 + return NS_OK;
1.1051 +}
1.1052 +
1.1053 +NS_IMETHODIMP
1.1054 +nsXPConnect::OnProcessNextEvent(nsIThreadInternal *aThread, bool aMayWait,
1.1055 + uint32_t aRecursionDepth)
1.1056 +{
1.1057 + // Record this event.
1.1058 + mEventDepth++;
1.1059 +
1.1060 + // Push a null JSContext so that we don't see any script during
1.1061 + // event processing.
1.1062 + MOZ_ASSERT(NS_IsMainThread());
1.1063 + bool ok = PushJSContextNoScriptContext(nullptr);
1.1064 + NS_ENSURE_TRUE(ok, NS_ERROR_FAILURE);
1.1065 + return NS_OK;
1.1066 +}
1.1067 +
1.1068 +NS_IMETHODIMP
1.1069 +nsXPConnect::AfterProcessNextEvent(nsIThreadInternal *aThread,
1.1070 + uint32_t aRecursionDepth,
1.1071 + bool aEventWasProcessed)
1.1072 +{
1.1073 + // Watch out for unpaired events during observer registration.
1.1074 + if (MOZ_UNLIKELY(mEventDepth == 0))
1.1075 + return NS_OK;
1.1076 + mEventDepth--;
1.1077 +
1.1078 + // Now that we're back to the event loop, reset the slow script checkpoint.
1.1079 + mRuntime->OnAfterProcessNextEvent();
1.1080 +
1.1081 + // Call cycle collector occasionally.
1.1082 + MOZ_ASSERT(NS_IsMainThread());
1.1083 + nsJSContext::MaybePokeCC();
1.1084 + nsDOMMutationObserver::HandleMutations();
1.1085 +
1.1086 + PopJSContextNoScriptContext();
1.1087 +
1.1088 + // If the cx stack is empty, that means we're at the an un-nested event
1.1089 + // loop. This is a good time to make changes to debug mode.
1.1090 + if (XPCJSRuntime::Get()->GetJSContextStack()->Count() == 0) {
1.1091 + MOZ_ASSERT(mEventDepth == 0);
1.1092 + CheckForDebugMode(XPCJSRuntime::Get()->Runtime());
1.1093 + }
1.1094 + return NS_OK;
1.1095 +}
1.1096 +
1.1097 +NS_IMETHODIMP
1.1098 +nsXPConnect::OnDispatchedEvent(nsIThreadInternal* aThread)
1.1099 +{
1.1100 + NS_NOTREACHED("Why tell us?");
1.1101 + return NS_ERROR_UNEXPECTED;
1.1102 +}
1.1103 +
1.1104 +NS_IMETHODIMP
1.1105 +nsXPConnect::SetReportAllJSExceptions(bool newval)
1.1106 +{
1.1107 + // Ignore if the environment variable was set.
1.1108 + if (gReportAllJSExceptions != 1)
1.1109 + gReportAllJSExceptions = newval ? 2 : 0;
1.1110 +
1.1111 + return NS_OK;
1.1112 +}
1.1113 +
1.1114 +/* attribute JSRuntime runtime; */
1.1115 +NS_IMETHODIMP
1.1116 +nsXPConnect::GetRuntime(JSRuntime **runtime)
1.1117 +{
1.1118 + if (!runtime)
1.1119 + return NS_ERROR_NULL_POINTER;
1.1120 +
1.1121 + JSRuntime *rt = GetRuntime()->Runtime();
1.1122 + JS_AbortIfWrongThread(rt);
1.1123 + *runtime = rt;
1.1124 + return NS_OK;
1.1125 +}
1.1126 +
1.1127 +/* [noscript, notxpcom] void registerGCCallback(in xpcGCCallback func); */
1.1128 +NS_IMETHODIMP_(void)
1.1129 +nsXPConnect::RegisterGCCallback(xpcGCCallback func)
1.1130 +{
1.1131 + mRuntime->AddGCCallback(func);
1.1132 +}
1.1133 +
1.1134 +/* [noscript, notxpcom] void unregisterGCCallback(in xpcGCCallback func); */
1.1135 +NS_IMETHODIMP_(void)
1.1136 +nsXPConnect::UnregisterGCCallback(xpcGCCallback func)
1.1137 +{
1.1138 + mRuntime->RemoveGCCallback(func);
1.1139 +}
1.1140 +
1.1141 +/* [noscript, notxpcom] void registerContextCallback(in xpcContextCallback func); */
1.1142 +NS_IMETHODIMP_(void)
1.1143 +nsXPConnect::RegisterContextCallback(xpcContextCallback func)
1.1144 +{
1.1145 + mRuntime->AddContextCallback(func);
1.1146 +}
1.1147 +
1.1148 +/* [noscript, notxpcom] void unregisterContextCallback(in xpcContextCallback func); */
1.1149 +NS_IMETHODIMP_(void)
1.1150 +nsXPConnect::UnregisterContextCallback(xpcContextCallback func)
1.1151 +{
1.1152 + mRuntime->RemoveContextCallback(func);
1.1153 +}
1.1154 +
1.1155 +#ifdef MOZ_JSDEBUGGER
1.1156 +void
1.1157 +nsXPConnect::CheckForDebugMode(JSRuntime *rt)
1.1158 +{
1.1159 + if (gDebugMode == gDesiredDebugMode) {
1.1160 + return;
1.1161 + }
1.1162 +
1.1163 + // This can happen if a Worker is running, but we don't have the ability to
1.1164 + // debug workers right now, so just return.
1.1165 + if (!NS_IsMainThread())
1.1166 + MOZ_CRASH();
1.1167 +
1.1168 + AutoSafeJSContext cx;
1.1169 + JS_SetRuntimeDebugMode(rt, gDesiredDebugMode);
1.1170 +
1.1171 + nsresult rv;
1.1172 + const char jsdServiceCtrID[] = "@mozilla.org/js/jsd/debugger-service;1";
1.1173 + nsCOMPtr<jsdIDebuggerService> jsds = do_GetService(jsdServiceCtrID, &rv);
1.1174 + if (NS_FAILED(rv)) {
1.1175 + goto fail;
1.1176 + }
1.1177 +
1.1178 + if (!JS_SetDebugModeForAllCompartments(cx, gDesiredDebugMode))
1.1179 + goto fail;
1.1180 +
1.1181 + if (gDesiredDebugMode) {
1.1182 + rv = jsds->ActivateDebugger(rt);
1.1183 + }
1.1184 +
1.1185 + gDebugMode = gDesiredDebugMode;
1.1186 + return;
1.1187 +
1.1188 +fail:
1.1189 + if (jsds)
1.1190 + jsds->DeactivateDebugger();
1.1191 +
1.1192 + /*
1.1193 + * If an attempt to turn debug mode on fails, cancel the request. It's
1.1194 + * always safe to turn debug mode off, since DeactivateDebugger prevents
1.1195 + * debugger callbacks from having any effect.
1.1196 + */
1.1197 + if (gDesiredDebugMode)
1.1198 + JS_SetRuntimeDebugMode(rt, false);
1.1199 + gDesiredDebugMode = gDebugMode = false;
1.1200 +}
1.1201 +#else //MOZ_JSDEBUGGER not defined
1.1202 +void
1.1203 +nsXPConnect::CheckForDebugMode(JSRuntime *rt)
1.1204 +{
1.1205 + gDesiredDebugMode = gDebugMode = false;
1.1206 +}
1.1207 +#endif //#ifdef MOZ_JSDEBUGGER
1.1208 +
1.1209 +
1.1210 +void
1.1211 +xpc_ActivateDebugMode()
1.1212 +{
1.1213 + XPCJSRuntime* rt = nsXPConnect::GetRuntimeInstance();
1.1214 + nsXPConnect::XPConnect()->SetDebugModeWhenPossible(true, true);
1.1215 + nsXPConnect::CheckForDebugMode(rt->Runtime());
1.1216 +}
1.1217 +
1.1218 +/* virtual */
1.1219 +JSContext*
1.1220 +nsXPConnect::GetCurrentJSContext()
1.1221 +{
1.1222 + return GetRuntime()->GetJSContextStack()->Peek();
1.1223 +}
1.1224 +
1.1225 +/* virtual */
1.1226 +JSContext*
1.1227 +nsXPConnect::InitSafeJSContext()
1.1228 +{
1.1229 + return GetRuntime()->GetJSContextStack()->InitSafeJSContext();
1.1230 +}
1.1231 +
1.1232 +/* virtual */
1.1233 +JSContext*
1.1234 +nsXPConnect::GetSafeJSContext()
1.1235 +{
1.1236 + return GetRuntime()->GetJSContextStack()->GetSafeJSContext();
1.1237 +}
1.1238 +
1.1239 +namespace xpc {
1.1240 +
1.1241 +bool
1.1242 +PushJSContextNoScriptContext(JSContext *aCx)
1.1243 +{
1.1244 + MOZ_ASSERT_IF(aCx, !GetScriptContextFromJSContext(aCx));
1.1245 + return XPCJSRuntime::Get()->GetJSContextStack()->Push(aCx);
1.1246 +}
1.1247 +
1.1248 +void
1.1249 +PopJSContextNoScriptContext()
1.1250 +{
1.1251 + XPCJSRuntime::Get()->GetJSContextStack()->Pop();
1.1252 +}
1.1253 +
1.1254 +} // namespace xpc
1.1255 +
1.1256 +nsIPrincipal*
1.1257 +nsXPConnect::GetPrincipal(JSObject* obj, bool allowShortCircuit) const
1.1258 +{
1.1259 + MOZ_ASSERT(IS_WN_REFLECTOR(obj), "What kind of wrapper is this?");
1.1260 +
1.1261 + XPCWrappedNative *xpcWrapper = XPCWrappedNative::Get(obj);
1.1262 + if (xpcWrapper) {
1.1263 + if (allowShortCircuit) {
1.1264 + nsIPrincipal *result = xpcWrapper->GetObjectPrincipal();
1.1265 + if (result) {
1.1266 + return result;
1.1267 + }
1.1268 + }
1.1269 +
1.1270 + // If not, check if it points to an nsIScriptObjectPrincipal
1.1271 + nsCOMPtr<nsIScriptObjectPrincipal> objPrin =
1.1272 + do_QueryInterface(xpcWrapper->Native());
1.1273 + if (objPrin) {
1.1274 + nsIPrincipal *result = objPrin->GetPrincipal();
1.1275 + if (result) {
1.1276 + return result;
1.1277 + }
1.1278 + }
1.1279 + }
1.1280 +
1.1281 + return nullptr;
1.1282 +}
1.1283 +
1.1284 +NS_IMETHODIMP
1.1285 +nsXPConnect::HoldObject(JSContext *aJSContext, JSObject *aObjectArg,
1.1286 + nsIXPConnectJSObjectHolder **aHolder)
1.1287 +{
1.1288 + RootedObject aObject(aJSContext, aObjectArg);
1.1289 + XPCJSObjectHolder* objHolder = XPCJSObjectHolder::newHolder(aObject);
1.1290 + if (!objHolder)
1.1291 + return NS_ERROR_OUT_OF_MEMORY;
1.1292 +
1.1293 + NS_ADDREF(*aHolder = objHolder);
1.1294 + return NS_OK;
1.1295 +}
1.1296 +
1.1297 +namespace xpc {
1.1298 +
1.1299 +bool
1.1300 +Base64Encode(JSContext *cx, HandleValue val, MutableHandleValue out)
1.1301 +{
1.1302 + MOZ_ASSERT(cx);
1.1303 +
1.1304 + JS::RootedValue root(cx, val);
1.1305 + xpc_qsACString encodedString(cx, root, &root, false,
1.1306 + xpc_qsACString::eStringify,
1.1307 + xpc_qsACString::eStringify);
1.1308 + if (!encodedString.IsValid())
1.1309 + return false;
1.1310 +
1.1311 + nsAutoCString result;
1.1312 + if (NS_FAILED(mozilla::Base64Encode(encodedString, result))) {
1.1313 + JS_ReportError(cx, "Failed to encode base64 data!");
1.1314 + return false;
1.1315 + }
1.1316 +
1.1317 + JSString *str = JS_NewStringCopyN(cx, result.get(), result.Length());
1.1318 + if (!str)
1.1319 + return false;
1.1320 +
1.1321 + out.setString(str);
1.1322 + return true;
1.1323 +}
1.1324 +
1.1325 +bool
1.1326 +Base64Decode(JSContext *cx, HandleValue val, MutableHandleValue out)
1.1327 +{
1.1328 + MOZ_ASSERT(cx);
1.1329 +
1.1330 + JS::RootedValue root(cx, val);
1.1331 + xpc_qsACString encodedString(cx, root, &root, false,
1.1332 + xpc_qsACString::eStringify,
1.1333 + xpc_qsACString::eStringify);
1.1334 + if (!encodedString.IsValid())
1.1335 + return false;
1.1336 +
1.1337 + nsAutoCString result;
1.1338 + if (NS_FAILED(mozilla::Base64Decode(encodedString, result))) {
1.1339 + JS_ReportError(cx, "Failed to decode base64 string!");
1.1340 + return false;
1.1341 + }
1.1342 +
1.1343 + JSString *str = JS_NewStringCopyN(cx, result.get(), result.Length());
1.1344 + if (!str)
1.1345 + return false;
1.1346 +
1.1347 + out.setString(str);
1.1348 + return true;
1.1349 +}
1.1350 +
1.1351 +void
1.1352 +SetLocationForGlobal(JSObject *global, const nsACString& location)
1.1353 +{
1.1354 + MOZ_ASSERT(global);
1.1355 + EnsureCompartmentPrivate(global)->SetLocation(location);
1.1356 +}
1.1357 +
1.1358 +void
1.1359 +SetLocationForGlobal(JSObject *global, nsIURI *locationURI)
1.1360 +{
1.1361 + MOZ_ASSERT(global);
1.1362 + EnsureCompartmentPrivate(global)->SetLocationURI(locationURI);
1.1363 +}
1.1364 +
1.1365 +} // namespace xpc
1.1366 +
1.1367 +NS_IMETHODIMP
1.1368 +nsXPConnect::SetDebugModeWhenPossible(bool mode, bool allowSyncDisable)
1.1369 +{
1.1370 + gDesiredDebugMode = mode;
1.1371 + if (!mode && allowSyncDisable)
1.1372 + CheckForDebugMode(mRuntime->Runtime());
1.1373 + return NS_OK;
1.1374 +}
1.1375 +
1.1376 +NS_IMETHODIMP
1.1377 +nsXPConnect::NotifyDidPaint()
1.1378 +{
1.1379 + JS::NotifyDidPaint(GetRuntime()->Runtime());
1.1380 + return NS_OK;
1.1381 +}
1.1382 +
1.1383 +// Note - We used to have HAS_PRINCIPALS_FLAG = 1 here, so reusing that flag
1.1384 +// will require bumping the XDR version number.
1.1385 +static const uint8_t HAS_ORIGIN_PRINCIPALS_FLAG = 2;
1.1386 +
1.1387 +static nsresult
1.1388 +WriteScriptOrFunction(nsIObjectOutputStream *stream, JSContext *cx,
1.1389 + JSScript *scriptArg, HandleObject functionObj)
1.1390 +{
1.1391 + // Exactly one of script or functionObj must be given
1.1392 + MOZ_ASSERT(!scriptArg != !functionObj);
1.1393 +
1.1394 + RootedScript script(cx, scriptArg);
1.1395 + if (!script) {
1.1396 + RootedFunction fun(cx, JS_GetObjectFunction(functionObj));
1.1397 + script.set(JS_GetFunctionScript(cx, fun));
1.1398 + }
1.1399 +
1.1400 + nsIPrincipal *principal =
1.1401 + nsJSPrincipals::get(JS_GetScriptPrincipals(script));
1.1402 + nsIPrincipal *originPrincipal =
1.1403 + nsJSPrincipals::get(JS_GetScriptOriginPrincipals(script));
1.1404 +
1.1405 + uint8_t flags = 0;
1.1406 +
1.1407 + // Optimize for the common case when originPrincipals == principals. As
1.1408 + // originPrincipals is set to principals when the former is null we can
1.1409 + // simply skip the originPrincipals when they are the same as principals.
1.1410 + if (originPrincipal && originPrincipal != principal)
1.1411 + flags |= HAS_ORIGIN_PRINCIPALS_FLAG;
1.1412 +
1.1413 + nsresult rv = stream->Write8(flags);
1.1414 + if (NS_FAILED(rv))
1.1415 + return rv;
1.1416 +
1.1417 + if (flags & HAS_ORIGIN_PRINCIPALS_FLAG) {
1.1418 + rv = stream->WriteObject(originPrincipal, true);
1.1419 + if (NS_FAILED(rv))
1.1420 + return rv;
1.1421 + }
1.1422 +
1.1423 + uint32_t size;
1.1424 + void* data;
1.1425 + {
1.1426 + if (functionObj)
1.1427 + data = JS_EncodeInterpretedFunction(cx, functionObj, &size);
1.1428 + else
1.1429 + data = JS_EncodeScript(cx, script, &size);
1.1430 + }
1.1431 +
1.1432 + if (!data)
1.1433 + return NS_ERROR_OUT_OF_MEMORY;
1.1434 + MOZ_ASSERT(size);
1.1435 + rv = stream->Write32(size);
1.1436 + if (NS_SUCCEEDED(rv))
1.1437 + rv = stream->WriteBytes(static_cast<char *>(data), size);
1.1438 + js_free(data);
1.1439 +
1.1440 + return rv;
1.1441 +}
1.1442 +
1.1443 +static nsresult
1.1444 +ReadScriptOrFunction(nsIObjectInputStream *stream, JSContext *cx,
1.1445 + JSScript **scriptp, JSObject **functionObjp)
1.1446 +{
1.1447 + // Exactly one of script or functionObj must be given
1.1448 + MOZ_ASSERT(!scriptp != !functionObjp);
1.1449 +
1.1450 + uint8_t flags;
1.1451 + nsresult rv = stream->Read8(&flags);
1.1452 + if (NS_FAILED(rv))
1.1453 + return rv;
1.1454 +
1.1455 + nsJSPrincipals* originPrincipal = nullptr;
1.1456 + nsCOMPtr<nsIPrincipal> readOriginPrincipal;
1.1457 + if (flags & HAS_ORIGIN_PRINCIPALS_FLAG) {
1.1458 + nsCOMPtr<nsISupports> supports;
1.1459 + rv = stream->ReadObject(true, getter_AddRefs(supports));
1.1460 + if (NS_FAILED(rv))
1.1461 + return rv;
1.1462 + readOriginPrincipal = do_QueryInterface(supports);
1.1463 + originPrincipal = nsJSPrincipals::get(readOriginPrincipal);
1.1464 + }
1.1465 +
1.1466 + uint32_t size;
1.1467 + rv = stream->Read32(&size);
1.1468 + if (NS_FAILED(rv))
1.1469 + return rv;
1.1470 +
1.1471 + char* data;
1.1472 + rv = stream->ReadBytes(size, &data);
1.1473 + if (NS_FAILED(rv))
1.1474 + return rv;
1.1475 +
1.1476 + {
1.1477 + if (scriptp) {
1.1478 + JSScript *script = JS_DecodeScript(cx, data, size, originPrincipal);
1.1479 + if (!script)
1.1480 + rv = NS_ERROR_OUT_OF_MEMORY;
1.1481 + else
1.1482 + *scriptp = script;
1.1483 + } else {
1.1484 + JSObject *funobj = JS_DecodeInterpretedFunction(cx, data, size,
1.1485 + originPrincipal);
1.1486 + if (!funobj)
1.1487 + rv = NS_ERROR_OUT_OF_MEMORY;
1.1488 + else
1.1489 + *functionObjp = funobj;
1.1490 + }
1.1491 + }
1.1492 +
1.1493 + nsMemory::Free(data);
1.1494 + return rv;
1.1495 +}
1.1496 +
1.1497 +NS_IMETHODIMP
1.1498 +nsXPConnect::WriteScript(nsIObjectOutputStream *stream, JSContext *cx, JSScript *script)
1.1499 +{
1.1500 + return WriteScriptOrFunction(stream, cx, script, NullPtr());
1.1501 +}
1.1502 +
1.1503 +NS_IMETHODIMP
1.1504 +nsXPConnect::ReadScript(nsIObjectInputStream *stream, JSContext *cx, JSScript **scriptp)
1.1505 +{
1.1506 + return ReadScriptOrFunction(stream, cx, scriptp, nullptr);
1.1507 +}
1.1508 +
1.1509 +NS_IMETHODIMP
1.1510 +nsXPConnect::WriteFunction(nsIObjectOutputStream *stream, JSContext *cx, JSObject *functionObjArg)
1.1511 +{
1.1512 + RootedObject functionObj(cx, functionObjArg);
1.1513 + return WriteScriptOrFunction(stream, cx, nullptr, functionObj);
1.1514 +}
1.1515 +
1.1516 +NS_IMETHODIMP
1.1517 +nsXPConnect::ReadFunction(nsIObjectInputStream *stream, JSContext *cx, JSObject **functionObjp)
1.1518 +{
1.1519 + return ReadScriptOrFunction(stream, cx, nullptr, functionObjp);
1.1520 +}
1.1521 +
1.1522 +NS_IMETHODIMP
1.1523 +nsXPConnect::MarkErrorUnreported(JSContext *cx)
1.1524 +{
1.1525 + XPCContext *xpcc = XPCContext::GetXPCContext(cx);
1.1526 + xpcc->MarkErrorUnreported();
1.1527 + return NS_OK;
1.1528 +}
1.1529 +
1.1530 +/* These are here to be callable from a debugger */
1.1531 +extern "C" {
1.1532 +JS_EXPORT_API(void) DumpJSStack()
1.1533 +{
1.1534 + nsresult rv;
1.1535 + nsCOMPtr<nsIXPConnect> xpc(do_GetService(nsIXPConnect::GetCID(), &rv));
1.1536 + if (NS_SUCCEEDED(rv) && xpc)
1.1537 + xpc->DebugDumpJSStack(true, true, false);
1.1538 + else
1.1539 + printf("failed to get XPConnect service!\n");
1.1540 +}
1.1541 +
1.1542 +JS_EXPORT_API(char*) PrintJSStack()
1.1543 +{
1.1544 + nsresult rv;
1.1545 + nsCOMPtr<nsIXPConnect> xpc(do_GetService(nsIXPConnect::GetCID(), &rv));
1.1546 + return (NS_SUCCEEDED(rv) && xpc) ?
1.1547 + xpc->DebugPrintJSStack(true, true, false) :
1.1548 + nullptr;
1.1549 +}
1.1550 +
1.1551 +JS_EXPORT_API(void) DumpJSEval(uint32_t frameno, const char* text)
1.1552 +{
1.1553 + nsresult rv;
1.1554 + nsCOMPtr<nsIXPConnect> xpc(do_GetService(nsIXPConnect::GetCID(), &rv));
1.1555 + if (NS_SUCCEEDED(rv) && xpc)
1.1556 + xpc->DebugDumpEvalInJSStackFrame(frameno, text);
1.1557 + else
1.1558 + printf("failed to get XPConnect service!\n");
1.1559 +}
1.1560 +
1.1561 +JS_EXPORT_API(void) DumpCompleteHeap()
1.1562 +{
1.1563 + nsCOMPtr<nsICycleCollectorListener> listener =
1.1564 + do_CreateInstance("@mozilla.org/cycle-collector-logger;1");
1.1565 + if (!listener) {
1.1566 + NS_WARNING("Failed to create CC logger");
1.1567 + return;
1.1568 + }
1.1569 +
1.1570 + nsCOMPtr<nsICycleCollectorListener> alltracesListener;
1.1571 + listener->AllTraces(getter_AddRefs(alltracesListener));
1.1572 + if (!alltracesListener) {
1.1573 + NS_WARNING("Failed to get all traces logger");
1.1574 + return;
1.1575 + }
1.1576 +
1.1577 + nsJSContext::CycleCollectNow(alltracesListener);
1.1578 +}
1.1579 +
1.1580 +} // extern "C"
1.1581 +
1.1582 +namespace xpc {
1.1583 +
1.1584 +bool
1.1585 +Atob(JSContext *cx, unsigned argc, Value *vp)
1.1586 +{
1.1587 + CallArgs args = CallArgsFromVp(argc, vp);
1.1588 + if (!args.length())
1.1589 + return true;
1.1590 +
1.1591 + return xpc::Base64Decode(cx, args[0], args.rval());
1.1592 +}
1.1593 +
1.1594 +bool
1.1595 +Btoa(JSContext *cx, unsigned argc, Value *vp)
1.1596 +{
1.1597 + CallArgs args = CallArgsFromVp(argc, vp);
1.1598 + if (!args.length())
1.1599 + return true;
1.1600 +
1.1601 + return xpc::Base64Encode(cx, args[0], args.rval());
1.1602 +}
1.1603 +
1.1604 +bool
1.1605 +IsXrayWrapper(JSObject *obj)
1.1606 +{
1.1607 + return WrapperFactory::IsXrayWrapper(obj);
1.1608 +}
1.1609 +
1.1610 +} // namespace xpc
1.1611 +
1.1612 +namespace mozilla {
1.1613 +namespace dom {
1.1614 +
1.1615 +bool
1.1616 +IsChromeOrXBL(JSContext* cx, JSObject* /* unused */)
1.1617 +{
1.1618 + MOZ_ASSERT(NS_IsMainThread());
1.1619 + JSCompartment* c = js::GetContextCompartment(cx);
1.1620 +
1.1621 + // For remote XUL, we run XBL in the XUL scope. Given that we care about
1.1622 + // compat and not security for remote XUL, we just always claim to be XBL.
1.1623 + //
1.1624 + // Note that, for performance, we don't check AllowXULXBLForPrincipal here,
1.1625 + // and instead rely on the fact that AllowXBLScope() only returns false in
1.1626 + // remote XUL situations.
1.1627 + return AccessCheck::isChrome(c) || IsXBLScope(c) || !AllowXBLScope(c);
1.1628 +}
1.1629 +
1.1630 +} // namespace dom
1.1631 +} // namespace mozilla
