The Tor Browser / file comparison
comparison: js/xpconnect/src/XPCWrappedJSClass.cpp
js/xpconnect/src/XPCWrappedJSClass.cpp
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- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:f245ebec36b0 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* vim: set ts=8 sts=4 et sw=4 tw=99: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 /* Sharable code and data for wrapper around JSObjects. */ | |
| 8 | |
| 9 #include "xpcprivate.h" | |
| 10 #include "jsprf.h" | |
| 11 #include "nsArrayEnumerator.h" | |
| 12 #include "nsContentUtils.h" | |
| 13 #include "nsWrapperCache.h" | |
| 14 #include "AccessCheck.h" | |
| 15 #include "nsJSUtils.h" | |
| 16 #include "mozilla/Attributes.h" | |
| 17 #include "mozilla/dom/BindingUtils.h" | |
| 18 #include "mozilla/dom/DOMException.h" | |
| 19 #include "mozilla/dom/DOMExceptionBinding.h" | |
| 20 | |
| 21 #include "jsapi.h" | |
| 22 #include "jsfriendapi.h" | |
| 23 | |
| 24 using namespace xpc; | |
| 25 using namespace JS; | |
| 26 using namespace mozilla; | |
| 27 | |
| 28 NS_IMPL_ISUPPORTS(nsXPCWrappedJSClass, nsIXPCWrappedJSClass) | |
| 29 | |
| 30 // the value of this variable is never used - we use its address as a sentinel | |
| 31 static uint32_t zero_methods_descriptor; | |
| 32 | |
| 33 bool AutoScriptEvaluate::StartEvaluating(HandleObject scope, JSErrorReporter errorReporter) | |
| 34 { | |
| 35 NS_PRECONDITION(!mEvaluated, "AutoScriptEvaluate::Evaluate should only be called once"); | |
| 36 | |
| 37 if (!mJSContext) | |
| 38 return true; | |
| 39 | |
| 40 mEvaluated = true; | |
| 41 if (!JS_GetErrorReporter(mJSContext)) { | |
| 42 JS_SetErrorReporter(mJSContext, errorReporter); | |
| 43 mErrorReporterSet = true; | |
| 44 } | |
| 45 | |
| 46 JS_BeginRequest(mJSContext); | |
| 47 mAutoCompartment.construct(mJSContext, scope); | |
| 48 | |
| 49 // Saving the exception state keeps us from interfering with another script | |
| 50 // that may also be running on this context. This occurred first with the | |
| 51 // js debugger, as described in | |
| 52 // http://bugzilla.mozilla.org/show_bug.cgi?id=88130 but presumably could | |
| 53 // show up in any situation where a script calls into a wrapped js component | |
| 54 // on the same context, while the context has a nonzero exception state. | |
| 55 mState.construct(mJSContext); | |
| 56 | |
| 57 return true; | |
| 58 } | |
| 59 | |
| 60 AutoScriptEvaluate::~AutoScriptEvaluate() | |
| 61 { | |
| 62 if (!mJSContext || !mEvaluated) | |
| 63 return; | |
| 64 mState.ref().restore(); | |
| 65 | |
| 66 JS_EndRequest(mJSContext); | |
| 67 | |
| 68 if (mErrorReporterSet) | |
| 69 JS_SetErrorReporter(mJSContext, nullptr); | |
| 70 } | |
| 71 | |
| 72 // It turns out that some errors may be not worth reporting. So, this | |
| 73 // function is factored out to manage that. | |
| 74 bool xpc_IsReportableErrorCode(nsresult code) | |
| 75 { | |
| 76 if (NS_SUCCEEDED(code)) | |
| 77 return false; | |
| 78 | |
| 79 switch (code) { | |
| 80 // Error codes that we don't want to report as errors... | |
| 81 // These generally indicate bad interface design AFAIC. | |
| 82 case NS_ERROR_FACTORY_REGISTER_AGAIN: | |
| 83 case NS_BASE_STREAM_WOULD_BLOCK: | |
| 84 return false; | |
| 85 default: | |
| 86 return true; | |
| 87 } | |
| 88 } | |
| 89 | |
| 90 // static | |
| 91 already_AddRefed<nsXPCWrappedJSClass> | |
| 92 nsXPCWrappedJSClass::GetNewOrUsed(JSContext* cx, REFNSIID aIID) | |
| 93 { | |
| 94 XPCJSRuntime* rt = nsXPConnect::GetRuntimeInstance(); | |
| 95 IID2WrappedJSClassMap* map = rt->GetWrappedJSClassMap(); | |
| 96 nsRefPtr<nsXPCWrappedJSClass> clasp = map->Find(aIID); | |
| 97 | |
| 98 if (!clasp) { | |
| 99 nsCOMPtr<nsIInterfaceInfo> info; | |
| 100 nsXPConnect::XPConnect()->GetInfoForIID(&aIID, getter_AddRefs(info)); | |
| 101 if (info) { | |
| 102 bool canScript, isBuiltin; | |
| 103 if (NS_SUCCEEDED(info->IsScriptable(&canScript)) && canScript && | |
| 104 NS_SUCCEEDED(info->IsBuiltinClass(&isBuiltin)) && !isBuiltin && | |
| 105 nsXPConnect::IsISupportsDescendant(info)) | |
| 106 { | |
| 107 clasp = new nsXPCWrappedJSClass(cx, aIID, info); | |
| 108 if (!clasp->mDescriptors) | |
| 109 clasp = nullptr; | |
| 110 } | |
| 111 } | |
| 112 } | |
| 113 return clasp.forget(); | |
| 114 } | |
| 115 | |
| 116 nsXPCWrappedJSClass::nsXPCWrappedJSClass(JSContext* cx, REFNSIID aIID, | |
| 117 nsIInterfaceInfo* aInfo) | |
| 118 : mRuntime(nsXPConnect::GetRuntimeInstance()), | |
| 119 mInfo(aInfo), | |
| 120 mName(nullptr), | |
| 121 mIID(aIID), | |
| 122 mDescriptors(nullptr) | |
| 123 { | |
| 124 mRuntime->GetWrappedJSClassMap()->Add(this); | |
| 125 | |
| 126 uint16_t methodCount; | |
| 127 if (NS_SUCCEEDED(mInfo->GetMethodCount(&methodCount))) { | |
| 128 if (methodCount) { | |
| 129 int wordCount = (methodCount/32)+1; | |
| 130 if (nullptr != (mDescriptors = new uint32_t[wordCount])) { | |
| 131 int i; | |
| 132 // init flags to 0; | |
| 133 for (i = wordCount-1; i >= 0; i--) | |
| 134 mDescriptors[i] = 0; | |
| 135 | |
| 136 for (i = 0; i < methodCount; i++) { | |
| 137 const nsXPTMethodInfo* info; | |
| 138 if (NS_SUCCEEDED(mInfo->GetMethodInfo(i, &info))) | |
| 139 SetReflectable(i, XPCConvert::IsMethodReflectable(*info)); | |
| 140 else { | |
| 141 delete [] mDescriptors; | |
| 142 mDescriptors = nullptr; | |
| 143 break; | |
| 144 } | |
| 145 } | |
| 146 } | |
| 147 } else { | |
| 148 mDescriptors = &zero_methods_descriptor; | |
| 149 } | |
| 150 } | |
| 151 } | |
| 152 | |
| 153 nsXPCWrappedJSClass::~nsXPCWrappedJSClass() | |
| 154 { | |
| 155 if (mDescriptors && mDescriptors != &zero_methods_descriptor) | |
| 156 delete [] mDescriptors; | |
| 157 if (mRuntime) | |
| 158 mRuntime->GetWrappedJSClassMap()->Remove(this); | |
| 159 | |
| 160 if (mName) | |
| 161 nsMemory::Free(mName); | |
| 162 } | |
| 163 | |
| 164 JSObject* | |
| 165 nsXPCWrappedJSClass::CallQueryInterfaceOnJSObject(JSContext* cx, | |
| 166 JSObject* jsobjArg, | |
| 167 REFNSIID aIID) | |
| 168 { | |
| 169 RootedObject jsobj(cx, jsobjArg); | |
| 170 JSObject* id; | |
| 171 RootedValue retval(cx); | |
| 172 RootedObject retObj(cx); | |
| 173 bool success = false; | |
| 174 RootedValue fun(cx); | |
| 175 | |
| 176 // Don't call the actual function on a content object. We'll determine | |
| 177 // whether or not a content object is capable of implementing the | |
| 178 // interface (i.e. whether the interface is scriptable) and most content | |
| 179 // objects don't have QI implementations anyway. Also see bug 503926. | |
| 180 if (!xpc::AccessCheck::isChrome(js::GetObjectCompartment(jsobj))) { | |
| 181 return nullptr; | |
| 182 } | |
| 183 | |
| 184 // OK, it looks like we'll be calling into JS code. | |
| 185 AutoScriptEvaluate scriptEval(cx); | |
| 186 | |
| 187 // XXX we should install an error reporter that will send reports to | |
| 188 // the JS error console service. | |
| 189 if (!scriptEval.StartEvaluating(jsobj)) | |
| 190 return nullptr; | |
| 191 | |
| 192 // check upfront for the existence of the function property | |
| 193 HandleId funid = mRuntime->GetStringID(XPCJSRuntime::IDX_QUERY_INTERFACE); | |
| 194 if (!JS_GetPropertyById(cx, jsobj, funid, &fun) || JSVAL_IS_PRIMITIVE(fun)) | |
| 195 return nullptr; | |
| 196 | |
| 197 // Ensure that we are asking for a scriptable interface. | |
| 198 // NB: It's important for security that this check is here rather | |
| 199 // than later, since it prevents untrusted objects from implementing | |
| 200 // some interfaces in JS and aggregating a trusted object to | |
| 201 // implement intentionally (for security) unscriptable interfaces. | |
| 202 // We so often ask for nsISupports that we can short-circuit the test... | |
| 203 if (!aIID.Equals(NS_GET_IID(nsISupports))) { | |
| 204 nsCOMPtr<nsIInterfaceInfo> info; | |
| 205 nsXPConnect::XPConnect()->GetInfoForIID(&aIID, getter_AddRefs(info)); | |
| 206 if (!info) | |
| 207 return nullptr; | |
| 208 bool canScript, isBuiltin; | |
| 209 if (NS_FAILED(info->IsScriptable(&canScript)) || !canScript || | |
| 210 NS_FAILED(info->IsBuiltinClass(&isBuiltin)) || isBuiltin) | |
| 211 return nullptr; | |
| 212 } | |
| 213 | |
| 214 id = xpc_NewIDObject(cx, jsobj, aIID); | |
| 215 if (id) { | |
| 216 // Throwing NS_NOINTERFACE is the prescribed way to fail QI from JS. It | |
| 217 // is not an exception that is ever worth reporting, but we don't want | |
| 218 // to eat all exceptions either. | |
| 219 | |
| 220 { | |
| 221 AutoSaveContextOptions asco(cx); | |
| 222 ContextOptionsRef(cx).setDontReportUncaught(true); | |
| 223 RootedValue arg(cx, JS::ObjectValue(*id)); | |
| 224 success = JS_CallFunctionValue(cx, jsobj, fun, arg, &retval); | |
| 225 } | |
| 226 | |
| 227 if (!success && JS_IsExceptionPending(cx)) { | |
| 228 RootedValue jsexception(cx, NullValue()); | |
| 229 | |
| 230 if (JS_GetPendingException(cx, &jsexception)) { | |
| 231 nsresult rv; | |
| 232 if (jsexception.isObject()) { | |
| 233 // XPConnect may have constructed an object to represent a | |
| 234 // C++ QI failure. See if that is the case. | |
| 235 using namespace mozilla::dom; | |
| 236 Exception *e = nullptr; | |
| 237 UNWRAP_OBJECT(Exception, &jsexception.toObject(), e); | |
| 238 | |
| 239 if (e && | |
| 240 NS_SUCCEEDED(e->GetResult(&rv)) && | |
| 241 rv == NS_NOINTERFACE) { | |
| 242 JS_ClearPendingException(cx); | |
| 243 } | |
| 244 } else if (JSVAL_IS_NUMBER(jsexception)) { | |
| 245 // JS often throws an nsresult. | |
| 246 if (JSVAL_IS_DOUBLE(jsexception)) | |
| 247 // Visual Studio 9 doesn't allow casting directly from | |
| 248 // a double to an enumeration type, contrary to | |
| 249 // 5.2.9(10) of C++11, so add an intermediate cast. | |
| 250 rv = (nsresult)(uint32_t)(JSVAL_TO_DOUBLE(jsexception)); | |
| 251 else | |
| 252 rv = (nsresult)(JSVAL_TO_INT(jsexception)); | |
| 253 | |
| 254 if (rv == NS_NOINTERFACE) | |
| 255 JS_ClearPendingException(cx); | |
| 256 } | |
| 257 } | |
| 258 | |
| 259 // Don't report if reporting was disabled by someone else. | |
| 260 if (!ContextOptionsRef(cx).dontReportUncaught()) | |
| 261 JS_ReportPendingException(cx); | |
| 262 } else if (!success) { | |
| 263 NS_WARNING("QI hook ran OOMed - this is probably a bug!"); | |
| 264 } | |
| 265 } | |
| 266 | |
| 267 if (success) | |
| 268 success = JS_ValueToObject(cx, retval, &retObj); | |
| 269 | |
| 270 return success ? retObj.get() : nullptr; | |
| 271 } | |
| 272 | |
| 273 /***************************************************************************/ | |
| 274 | |
| 275 static bool | |
| 276 GetNamedPropertyAsVariantRaw(XPCCallContext& ccx, | |
| 277 HandleObject aJSObj, | |
| 278 HandleId aName, | |
| 279 nsIVariant** aResult, | |
| 280 nsresult* pErr) | |
| 281 { | |
| 282 nsXPTType type = nsXPTType((uint8_t)TD_INTERFACE_TYPE); | |
| 283 RootedValue val(ccx); | |
| 284 | |
| 285 return JS_GetPropertyById(ccx, aJSObj, aName, &val) && | |
| 286 // Note that this always takes the T_INTERFACE path through | |
| 287 // JSData2Native, so the value passed for useAllocator | |
| 288 // doesn't really matter. We pass true for consistency. | |
| 289 XPCConvert::JSData2Native(aResult, val, type, true, | |
| 290 &NS_GET_IID(nsIVariant), pErr); | |
| 291 } | |
| 292 | |
| 293 // static | |
| 294 nsresult | |
| 295 nsXPCWrappedJSClass::GetNamedPropertyAsVariant(XPCCallContext& ccx, | |
| 296 JSObject* aJSObjArg, | |
| 297 const nsAString& aName, | |
| 298 nsIVariant** aResult) | |
| 299 { | |
| 300 JSContext* cx = ccx.GetJSContext(); | |
| 301 RootedObject aJSObj(cx, aJSObjArg); | |
| 302 | |
| 303 AutoScriptEvaluate scriptEval(cx); | |
| 304 if (!scriptEval.StartEvaluating(aJSObj)) | |
| 305 return NS_ERROR_FAILURE; | |
| 306 | |
| 307 // Wrap the string in a jsval after the AutoScriptEvaluate, so that the | |
| 308 // resulting value ends up in the correct compartment. | |
| 309 nsStringBuffer* buf; | |
| 310 RootedValue value(cx); | |
| 311 if (!XPCStringConvert::ReadableToJSVal(ccx, aName, &buf, &value)) | |
| 312 return NS_ERROR_OUT_OF_MEMORY; | |
| 313 if (buf) | |
| 314 buf->AddRef(); | |
| 315 | |
| 316 RootedId id(cx); | |
| 317 nsresult rv = NS_OK; | |
| 318 if (!JS_ValueToId(cx, value, &id) || | |
| 319 !GetNamedPropertyAsVariantRaw(ccx, aJSObj, id, aResult, &rv)) { | |
| 320 if (NS_FAILED(rv)) | |
| 321 return rv; | |
| 322 return NS_ERROR_FAILURE; | |
| 323 } | |
| 324 return NS_OK; | |
| 325 } | |
| 326 | |
| 327 /***************************************************************************/ | |
| 328 | |
| 329 // static | |
| 330 nsresult | |
| 331 nsXPCWrappedJSClass::BuildPropertyEnumerator(XPCCallContext& ccx, | |
| 332 JSObject* aJSObjArg, | |
| 333 nsISimpleEnumerator** aEnumerate) | |
| 334 { | |
| 335 JSContext* cx = ccx.GetJSContext(); | |
| 336 RootedObject aJSObj(cx, aJSObjArg); | |
| 337 | |
| 338 AutoScriptEvaluate scriptEval(cx); | |
| 339 if (!scriptEval.StartEvaluating(aJSObj)) | |
| 340 return NS_ERROR_FAILURE; | |
| 341 | |
| 342 AutoIdArray idArray(cx, JS_Enumerate(cx, aJSObj)); | |
| 343 if (!idArray) | |
| 344 return NS_ERROR_FAILURE; | |
| 345 | |
| 346 nsCOMArray<nsIProperty> propertyArray(idArray.length()); | |
| 347 RootedId idName(cx); | |
| 348 for (size_t i = 0; i < idArray.length(); i++) { | |
| 349 idName = idArray[i]; | |
| 350 | |
| 351 nsCOMPtr<nsIVariant> value; | |
| 352 nsresult rv; | |
| 353 if (!GetNamedPropertyAsVariantRaw(ccx, aJSObj, idName, | |
| 354 getter_AddRefs(value), &rv)) { | |
| 355 if (NS_FAILED(rv)) | |
| 356 return rv; | |
| 357 return NS_ERROR_FAILURE; | |
| 358 } | |
| 359 | |
| 360 RootedValue jsvalName(cx); | |
| 361 if (!JS_IdToValue(cx, idName, &jsvalName)) | |
| 362 return NS_ERROR_FAILURE; | |
| 363 | |
| 364 JSString* name = ToString(cx, jsvalName); | |
| 365 if (!name) | |
| 366 return NS_ERROR_FAILURE; | |
| 367 | |
| 368 size_t length; | |
| 369 const jschar *chars = JS_GetStringCharsAndLength(cx, name, &length); | |
| 370 if (!chars) | |
| 371 return NS_ERROR_FAILURE; | |
| 372 | |
| 373 nsCOMPtr<nsIProperty> property = | |
| 374 new xpcProperty(chars, (uint32_t) length, value); | |
| 375 | |
| 376 if (!propertyArray.AppendObject(property)) | |
| 377 return NS_ERROR_FAILURE; | |
| 378 } | |
| 379 | |
| 380 return NS_NewArrayEnumerator(aEnumerate, propertyArray); | |
| 381 } | |
| 382 | |
| 383 /***************************************************************************/ | |
| 384 | |
| 385 NS_IMPL_ISUPPORTS(xpcProperty, nsIProperty) | |
| 386 | |
| 387 xpcProperty::xpcProperty(const char16_t* aName, uint32_t aNameLen, | |
| 388 nsIVariant* aValue) | |
| 389 : mName(aName, aNameLen), mValue(aValue) | |
| 390 { | |
| 391 } | |
| 392 | |
| 393 /* readonly attribute AString name; */ | |
| 394 NS_IMETHODIMP xpcProperty::GetName(nsAString & aName) | |
| 395 { | |
| 396 aName.Assign(mName); | |
| 397 return NS_OK; | |
| 398 } | |
| 399 | |
| 400 /* readonly attribute nsIVariant value; */ | |
| 401 NS_IMETHODIMP xpcProperty::GetValue(nsIVariant * *aValue) | |
| 402 { | |
| 403 nsCOMPtr<nsIVariant> rval = mValue; | |
| 404 rval.forget(aValue); | |
| 405 return NS_OK; | |
| 406 } | |
| 407 | |
| 408 /***************************************************************************/ | |
| 409 // This 'WrappedJSIdentity' class and singleton allow us to figure out if | |
| 410 // any given nsISupports* is implemented by a WrappedJS object. This is done | |
| 411 // using a QueryInterface call on the interface pointer with our ID. If | |
| 412 // that call returns NS_OK and the pointer is to our singleton, then the | |
| 413 // interface must be implemented by a WrappedJS object. NOTE: the | |
| 414 // 'WrappedJSIdentity' object is not a real XPCOM object and should not be | |
| 415 // used for anything else (hence it is declared in this implementation file). | |
| 416 | |
| 417 // {5C5C3BB0-A9BA-11d2-BA64-00805F8A5DD7} | |
| 418 #define NS_IXPCONNECT_WRAPPED_JS_IDENTITY_CLASS_IID \ | |
| 419 { 0x5c5c3bb0, 0xa9ba, 0x11d2, \ | |
| 420 { 0xba, 0x64, 0x0, 0x80, 0x5f, 0x8a, 0x5d, 0xd7 } } | |
| 421 | |
| 422 class WrappedJSIdentity | |
| 423 { | |
| 424 // no instance methods... | |
| 425 public: | |
| 426 NS_DECLARE_STATIC_IID_ACCESSOR(NS_IXPCONNECT_WRAPPED_JS_IDENTITY_CLASS_IID) | |
| 427 | |
| 428 static void* GetSingleton() | |
| 429 { | |
| 430 static WrappedJSIdentity* singleton = nullptr; | |
| 431 if (!singleton) | |
| 432 singleton = new WrappedJSIdentity(); | |
| 433 return (void*) singleton; | |
| 434 } | |
| 435 }; | |
| 436 | |
| 437 NS_DEFINE_STATIC_IID_ACCESSOR(WrappedJSIdentity, | |
| 438 NS_IXPCONNECT_WRAPPED_JS_IDENTITY_CLASS_IID) | |
| 439 | |
| 440 /***************************************************************************/ | |
| 441 | |
| 442 // static | |
| 443 bool | |
| 444 nsXPCWrappedJSClass::IsWrappedJS(nsISupports* aPtr) | |
| 445 { | |
| 446 void* result; | |
| 447 NS_PRECONDITION(aPtr, "null pointer"); | |
| 448 return aPtr && | |
| 449 NS_OK == aPtr->QueryInterface(NS_GET_IID(WrappedJSIdentity), &result) && | |
| 450 result == WrappedJSIdentity::GetSingleton(); | |
| 451 } | |
| 452 | |
| 453 // NB: This will return the top JSContext on the JSContext stack if there is one, | |
| 454 // before attempting to get the context from the wrapped JS object. | |
| 455 static JSContext * | |
| 456 GetContextFromObjectOrDefault(nsXPCWrappedJS* wrapper) | |
| 457 { | |
| 458 // First, try the cx stack. | |
| 459 XPCJSContextStack* stack = XPCJSRuntime::Get()->GetJSContextStack(); | |
| 460 if (stack->Peek()) | |
| 461 return stack->Peek(); | |
| 462 | |
| 463 // If the cx stack is empty, try the wrapper's JSObject. | |
| 464 JSCompartment *c = js::GetObjectCompartment(wrapper->GetJSObject()); | |
| 465 XPCContext *xpcc = EnsureCompartmentPrivate(c)->scope->GetContext(); | |
| 466 if (xpcc) { | |
| 467 JSContext *cx = xpcc->GetJSContext(); | |
| 468 JS_AbortIfWrongThread(JS_GetRuntime(cx)); | |
| 469 return cx; | |
| 470 } | |
| 471 | |
| 472 // Fall back to the safe JSContext. | |
| 473 return stack->GetSafeJSContext(); | |
| 474 } | |
| 475 | |
| 476 NS_IMETHODIMP | |
| 477 nsXPCWrappedJSClass::DelegatedQueryInterface(nsXPCWrappedJS* self, | |
| 478 REFNSIID aIID, | |
| 479 void** aInstancePtr) | |
| 480 { | |
| 481 if (aIID.Equals(NS_GET_IID(nsIXPConnectJSObjectHolder))) { | |
| 482 NS_ADDREF(self); | |
| 483 *aInstancePtr = (void*) static_cast<nsIXPConnectJSObjectHolder*>(self); | |
| 484 return NS_OK; | |
| 485 } | |
| 486 | |
| 487 // Objects internal to xpconnect are the only objects that even know *how* | |
| 488 // to ask for this iid. And none of them bother refcounting the thing. | |
| 489 if (aIID.Equals(NS_GET_IID(WrappedJSIdentity))) { | |
| 490 // asking to find out if this is a wrapper object | |
| 491 *aInstancePtr = WrappedJSIdentity::GetSingleton(); | |
| 492 return NS_OK; | |
| 493 } | |
| 494 | |
| 495 if (aIID.Equals(NS_GET_IID(nsIPropertyBag))) { | |
| 496 // We only want to expose one implementation from our aggregate. | |
| 497 nsXPCWrappedJS* root = self->GetRootWrapper(); | |
| 498 | |
| 499 if (!root->IsValid()) { | |
| 500 *aInstancePtr = nullptr; | |
| 501 return NS_NOINTERFACE; | |
| 502 } | |
| 503 | |
| 504 NS_ADDREF(root); | |
| 505 *aInstancePtr = (void*) static_cast<nsIPropertyBag*>(root); | |
| 506 return NS_OK; | |
| 507 } | |
| 508 | |
| 509 // We can't have a cached wrapper. | |
| 510 if (aIID.Equals(NS_GET_IID(nsWrapperCache))) { | |
| 511 *aInstancePtr = nullptr; | |
| 512 return NS_NOINTERFACE; | |
| 513 } | |
| 514 | |
| 515 AutoPushJSContext context(GetContextFromObjectOrDefault(self)); | |
| 516 XPCCallContext ccx(NATIVE_CALLER, context); | |
| 517 if (!ccx.IsValid()) { | |
| 518 *aInstancePtr = nullptr; | |
| 519 return NS_NOINTERFACE; | |
| 520 } | |
| 521 | |
| 522 // We support nsISupportsWeakReference iff the root wrapped JSObject | |
| 523 // claims to support it in its QueryInterface implementation. | |
| 524 if (aIID.Equals(NS_GET_IID(nsISupportsWeakReference))) { | |
| 525 // We only want to expose one implementation from our aggregate. | |
| 526 nsXPCWrappedJS* root = self->GetRootWrapper(); | |
| 527 | |
| 528 // Fail if JSObject doesn't claim support for nsISupportsWeakReference | |
| 529 if (!root->IsValid() || | |
| 530 !CallQueryInterfaceOnJSObject(ccx, root->GetJSObject(), aIID)) { | |
| 531 *aInstancePtr = nullptr; | |
| 532 return NS_NOINTERFACE; | |
| 533 } | |
| 534 | |
| 535 NS_ADDREF(root); | |
| 536 *aInstancePtr = (void*) static_cast<nsISupportsWeakReference*>(root); | |
| 537 return NS_OK; | |
| 538 } | |
| 539 | |
| 540 // Checks for any existing wrapper explicitly constructed for this iid. | |
| 541 // This includes the current 'self' wrapper. This also deals with the | |
| 542 // nsISupports case (for which it returns mRoot). | |
| 543 // Also check if asking for an interface from which one of our wrappers inherits. | |
| 544 if (nsXPCWrappedJS* sibling = self->FindOrFindInherited(aIID)) { | |
| 545 NS_ADDREF(sibling); | |
| 546 *aInstancePtr = sibling->GetXPTCStub(); | |
| 547 return NS_OK; | |
| 548 } | |
| 549 | |
| 550 // else we do the more expensive stuff... | |
| 551 | |
| 552 // check if the JSObject claims to implement this interface | |
| 553 RootedObject jsobj(ccx, CallQueryInterfaceOnJSObject(ccx, self->GetJSObject(), | |
| 554 aIID)); | |
| 555 if (jsobj) { | |
| 556 // We can't use XPConvert::JSObject2NativeInterface() here | |
| 557 // since that can find a XPCWrappedNative directly on the | |
| 558 // proto chain, and we don't want that here. We need to find | |
| 559 // the actual JS object that claimed it supports the interface | |
| 560 // we're looking for or we'll potentially bypass security | |
| 561 // checks etc by calling directly through to a native found on | |
| 562 // the prototype chain. | |
| 563 // | |
| 564 // Instead, simply do the nsXPCWrappedJS part of | |
| 565 // XPConvert::JSObject2NativeInterface() here to make sure we | |
| 566 // get a new (or used) nsXPCWrappedJS. | |
| 567 nsXPCWrappedJS* wrapper; | |
| 568 nsresult rv = nsXPCWrappedJS::GetNewOrUsed(jsobj, aIID, &wrapper); | |
| 569 if (NS_SUCCEEDED(rv) && wrapper) { | |
| 570 // We need to go through the QueryInterface logic to make | |
| 571 // this return the right thing for the various 'special' | |
| 572 // interfaces; e.g. nsIPropertyBag. | |
| 573 rv = wrapper->QueryInterface(aIID, aInstancePtr); | |
| 574 NS_RELEASE(wrapper); | |
| 575 return rv; | |
| 576 } | |
| 577 } | |
| 578 | |
| 579 // else... | |
| 580 // no can do | |
| 581 *aInstancePtr = nullptr; | |
| 582 return NS_NOINTERFACE; | |
| 583 } | |
| 584 | |
| 585 JSObject* | |
| 586 nsXPCWrappedJSClass::GetRootJSObject(JSContext* cx, JSObject* aJSObjArg) | |
| 587 { | |
| 588 RootedObject aJSObj(cx, aJSObjArg); | |
| 589 JSObject* result = CallQueryInterfaceOnJSObject(cx, aJSObj, | |
| 590 NS_GET_IID(nsISupports)); | |
| 591 if (!result) | |
| 592 return aJSObj; | |
| 593 JSObject* inner = js::UncheckedUnwrap(result); | |
| 594 if (inner) | |
| 595 return inner; | |
| 596 return result; | |
| 597 } | |
| 598 | |
| 599 void | |
| 600 xpcWrappedJSErrorReporter(JSContext *cx, const char *message, | |
| 601 JSErrorReport *report) | |
| 602 { | |
| 603 if (report) { | |
| 604 // If it is an exception report, then we can just deal with the | |
| 605 // exception later (if not caught in the JS code). | |
| 606 if (JSREPORT_IS_EXCEPTION(report->flags)) { | |
| 607 // XXX We have a problem with error reports from uncaught exceptions. | |
| 608 // | |
| 609 // http://bugzilla.mozilla.org/show_bug.cgi?id=66453 | |
| 610 // | |
| 611 // The issue is... | |
| 612 // | |
| 613 // We can't assume that the exception will *stay* uncaught. So, if | |
| 614 // we build an nsIXPCException here and the underlying exception | |
| 615 // really is caught before our script is done running then we blow | |
| 616 // it by returning failure to our caller when the script didn't | |
| 617 // really fail. However, This report contains error location info | |
| 618 // that is no longer available after the script is done. So, if the | |
| 619 // exception really is not caught (and is a non-engine exception) | |
| 620 // then we've lost the oportunity to capture the script location | |
| 621 // info that we *could* have captured here. | |
| 622 // | |
| 623 // This is expecially an issue with nested evaluations. | |
| 624 // | |
| 625 // Perhaps we could capture an expception here and store it as | |
| 626 // 'provisional' and then later if there is a pending exception | |
| 627 // when the script is done then we could maybe compare that in some | |
| 628 // way with the 'provisional' one in which we captured location info. | |
| 629 // We would not want to assume that the one discovered here is the | |
| 630 // same one that is later detected. This could cause us to lie. | |
| 631 // | |
| 632 // The thing is. we do not currently store the right stuff to compare | |
| 633 // these two nsIXPCExceptions (triggered by the same exception jsval | |
| 634 // in the engine). Maybe we should store the jsval and compare that? | |
| 635 // Maybe without even rooting it since we will not dereference it. | |
| 636 // This is inexact, but maybe the right thing to do? | |
| 637 // | |
| 638 // if (report->errorNumber == JSMSG_UNCAUGHT_EXCEPTION)) ... | |
| 639 // | |
| 640 | |
| 641 return; | |
| 642 } | |
| 643 | |
| 644 if (JSREPORT_IS_WARNING(report->flags)) { | |
| 645 // XXX printf the warning (#ifdef DEBUG only!). | |
| 646 // XXX send the warning to the console service. | |
| 647 return; | |
| 648 } | |
| 649 } | |
| 650 | |
| 651 XPCCallContext ccx(NATIVE_CALLER, cx); | |
| 652 if (!ccx.IsValid()) | |
| 653 return; | |
| 654 | |
| 655 nsCOMPtr<nsIException> e; | |
| 656 XPCConvert::JSErrorToXPCException(message, nullptr, nullptr, report, | |
| 657 getter_AddRefs(e)); | |
| 658 if (e) | |
| 659 ccx.GetXPCContext()->SetException(e); | |
| 660 } | |
| 661 | |
| 662 bool | |
| 663 nsXPCWrappedJSClass::GetArraySizeFromParam(JSContext* cx, | |
| 664 const XPTMethodDescriptor* method, | |
| 665 const nsXPTParamInfo& param, | |
| 666 uint16_t methodIndex, | |
| 667 uint8_t paramIndex, | |
| 668 nsXPTCMiniVariant* nativeParams, | |
| 669 uint32_t* result) | |
| 670 { | |
| 671 uint8_t argnum; | |
| 672 nsresult rv; | |
| 673 | |
| 674 rv = mInfo->GetSizeIsArgNumberForParam(methodIndex, ¶m, 0, &argnum); | |
| 675 if (NS_FAILED(rv)) | |
| 676 return false; | |
| 677 | |
| 678 const nsXPTParamInfo& arg_param = method->params[argnum]; | |
| 679 | |
| 680 // This should be enforced by the xpidl compiler, but it's not. | |
| 681 // See bug 695235. | |
| 682 MOZ_ASSERT(arg_param.GetType().TagPart() == nsXPTType::T_U32, | |
| 683 "size_is references parameter of invalid type."); | |
| 684 | |
| 685 if (arg_param.IsIndirect()) | |
| 686 *result = *(uint32_t*)nativeParams[argnum].val.p; | |
| 687 else | |
| 688 *result = nativeParams[argnum].val.u32; | |
| 689 | |
| 690 return true; | |
| 691 } | |
| 692 | |
| 693 bool | |
| 694 nsXPCWrappedJSClass::GetInterfaceTypeFromParam(JSContext* cx, | |
| 695 const XPTMethodDescriptor* method, | |
| 696 const nsXPTParamInfo& param, | |
| 697 uint16_t methodIndex, | |
| 698 const nsXPTType& type, | |
| 699 nsXPTCMiniVariant* nativeParams, | |
| 700 nsID* result) | |
| 701 { | |
| 702 uint8_t type_tag = type.TagPart(); | |
| 703 | |
| 704 if (type_tag == nsXPTType::T_INTERFACE) { | |
| 705 if (NS_SUCCEEDED(GetInterfaceInfo()-> | |
| 706 GetIIDForParamNoAlloc(methodIndex, ¶m, result))) { | |
| 707 return true; | |
| 708 } | |
| 709 } else if (type_tag == nsXPTType::T_INTERFACE_IS) { | |
| 710 uint8_t argnum; | |
| 711 nsresult rv; | |
| 712 rv = mInfo->GetInterfaceIsArgNumberForParam(methodIndex, | |
| 713 ¶m, &argnum); | |
| 714 if (NS_FAILED(rv)) | |
| 715 return false; | |
| 716 | |
| 717 const nsXPTParamInfo& arg_param = method->params[argnum]; | |
| 718 const nsXPTType& arg_type = arg_param.GetType(); | |
| 719 | |
| 720 if (arg_type.TagPart() == nsXPTType::T_IID) { | |
| 721 if (arg_param.IsIndirect()) { | |
| 722 nsID** p = (nsID**) nativeParams[argnum].val.p; | |
| 723 if (!p || !*p) | |
| 724 return false; | |
| 725 *result = **p; | |
| 726 } else { | |
| 727 nsID* p = (nsID*) nativeParams[argnum].val.p; | |
| 728 if (!p) | |
| 729 return false; | |
| 730 *result = *p; | |
| 731 } | |
| 732 return true; | |
| 733 } | |
| 734 } | |
| 735 return false; | |
| 736 } | |
| 737 | |
| 738 void | |
| 739 nsXPCWrappedJSClass::CleanupPointerArray(const nsXPTType& datum_type, | |
| 740 uint32_t array_count, | |
| 741 void** arrayp) | |
| 742 { | |
| 743 if (datum_type.IsInterfacePointer()) { | |
| 744 nsISupports** pp = (nsISupports**) arrayp; | |
| 745 for (uint32_t k = 0; k < array_count; k++) { | |
| 746 nsISupports* p = pp[k]; | |
| 747 NS_IF_RELEASE(p); | |
| 748 } | |
| 749 } else { | |
| 750 void** pp = (void**) arrayp; | |
| 751 for (uint32_t k = 0; k < array_count; k++) { | |
| 752 void* p = pp[k]; | |
| 753 if (p) nsMemory::Free(p); | |
| 754 } | |
| 755 } | |
| 756 } | |
| 757 | |
| 758 void | |
| 759 nsXPCWrappedJSClass::CleanupPointerTypeObject(const nsXPTType& type, | |
| 760 void** pp) | |
| 761 { | |
| 762 MOZ_ASSERT(pp,"null pointer"); | |
| 763 if (type.IsInterfacePointer()) { | |
| 764 nsISupports* p = *((nsISupports**)pp); | |
| 765 if (p) p->Release(); | |
| 766 } else { | |
| 767 void* p = *((void**)pp); | |
| 768 if (p) nsMemory::Free(p); | |
| 769 } | |
| 770 } | |
| 771 | |
| 772 class AutoClearPendingException | |
| 773 { | |
| 774 public: | |
| 775 AutoClearPendingException(JSContext *cx) : mCx(cx) { } | |
| 776 ~AutoClearPendingException() { JS_ClearPendingException(mCx); } | |
| 777 private: | |
| 778 JSContext* mCx; | |
| 779 }; | |
| 780 | |
| 781 nsresult | |
| 782 nsXPCWrappedJSClass::CheckForException(XPCCallContext & ccx, | |
| 783 const char * aPropertyName, | |
| 784 const char * anInterfaceName, | |
| 785 bool aForceReport) | |
| 786 { | |
| 787 XPCContext * xpcc = ccx.GetXPCContext(); | |
| 788 JSContext * cx = ccx.GetJSContext(); | |
| 789 nsCOMPtr<nsIException> xpc_exception; | |
| 790 /* this one would be set by our error reporter */ | |
| 791 | |
| 792 xpcc->GetException(getter_AddRefs(xpc_exception)); | |
| 793 if (xpc_exception) | |
| 794 xpcc->SetException(nullptr); | |
| 795 | |
| 796 // get this right away in case we do something below to cause JS code | |
| 797 // to run on this JSContext | |
| 798 nsresult pending_result = xpcc->GetPendingResult(); | |
| 799 | |
| 800 RootedValue js_exception(cx); | |
| 801 bool is_js_exception = JS_GetPendingException(cx, &js_exception); | |
| 802 | |
| 803 /* JS might throw an expection whether the reporter was called or not */ | |
| 804 if (is_js_exception) { | |
| 805 if (!xpc_exception) | |
| 806 XPCConvert::JSValToXPCException(&js_exception, anInterfaceName, | |
| 807 aPropertyName, | |
| 808 getter_AddRefs(xpc_exception)); | |
| 809 | |
| 810 /* cleanup and set failed even if we can't build an exception */ | |
| 811 if (!xpc_exception) { | |
| 812 XPCJSRuntime::Get()->SetPendingException(nullptr); // XXX necessary? | |
| 813 } | |
| 814 } | |
| 815 | |
| 816 AutoClearPendingException acpe(cx); | |
| 817 | |
| 818 if (xpc_exception) { | |
| 819 nsresult e_result; | |
| 820 if (NS_SUCCEEDED(xpc_exception->GetResult(&e_result))) { | |
| 821 // Figure out whether or not we should report this exception. | |
| 822 bool reportable = xpc_IsReportableErrorCode(e_result); | |
| 823 if (reportable) { | |
| 824 // Always want to report forced exceptions and XPConnect's own | |
| 825 // errors. | |
| 826 reportable = aForceReport || | |
| 827 NS_ERROR_GET_MODULE(e_result) == NS_ERROR_MODULE_XPCONNECT; | |
| 828 | |
| 829 // See if an environment variable was set or someone has told us | |
| 830 // that a user pref was set indicating that we should report all | |
| 831 // exceptions. | |
| 832 if (!reportable) | |
| 833 reportable = nsXPConnect::ReportAllJSExceptions(); | |
| 834 | |
| 835 // Finally, check to see if this is the last JS frame on the | |
| 836 // stack. If so then we always want to report it. | |
| 837 if (!reportable) | |
| 838 reportable = !JS::DescribeScriptedCaller(cx); | |
| 839 | |
| 840 // Ugly special case for GetInterface. It's "special" in the | |
| 841 // same way as QueryInterface in that a failure is not | |
| 842 // exceptional and shouldn't be reported. We have to do this | |
| 843 // check here instead of in xpcwrappedjs (like we do for QI) to | |
| 844 // avoid adding extra code to all xpcwrappedjs objects. | |
| 845 if (reportable && e_result == NS_ERROR_NO_INTERFACE && | |
| 846 !strcmp(anInterfaceName, "nsIInterfaceRequestor") && | |
| 847 !strcmp(aPropertyName, "getInterface")) { | |
| 848 reportable = false; | |
| 849 } | |
| 850 | |
| 851 // More special case, see bug 877760. | |
| 852 if (e_result == NS_ERROR_XPC_JSOBJECT_HAS_NO_FUNCTION_NAMED) { | |
| 853 reportable = false; | |
| 854 } | |
| 855 } | |
| 856 | |
| 857 // Try to use the error reporter set on the context to handle this | |
| 858 // error if it came from a JS exception. | |
| 859 if (reportable && is_js_exception && | |
| 860 JS_GetErrorReporter(cx) != xpcWrappedJSErrorReporter) | |
| 861 { | |
| 862 // If the error reporter ignores the error, it will call | |
| 863 // xpc->MarkErrorUnreported(). | |
| 864 xpcc->ClearUnreportedError(); | |
| 865 reportable = !JS_ReportPendingException(cx); | |
| 866 if (!xpcc->WasErrorReported()) | |
| 867 reportable = true; | |
| 868 } | |
| 869 | |
| 870 if (reportable) { | |
| 871 if (nsContentUtils::DOMWindowDumpEnabled()) { | |
| 872 static const char line[] = | |
| 873 "************************************************************\n"; | |
| 874 static const char preamble[] = | |
| 875 "* Call to xpconnect wrapped JSObject produced this error: *\n"; | |
| 876 static const char cant_get_text[] = | |
| 877 "FAILED TO GET TEXT FROM EXCEPTION\n"; | |
| 878 | |
| 879 fputs(line, stdout); | |
| 880 fputs(preamble, stdout); | |
| 881 nsCString text; | |
| 882 if (NS_SUCCEEDED(xpc_exception->ToString(text)) && | |
| 883 !text.IsEmpty()) { | |
| 884 fputs(text.get(), stdout); | |
| 885 fputs("\n", stdout); | |
| 886 } else | |
| 887 fputs(cant_get_text, stdout); | |
| 888 fputs(line, stdout); | |
| 889 } | |
| 890 | |
| 891 // Log the exception to the JS Console, so that users can do | |
| 892 // something with it. | |
| 893 nsCOMPtr<nsIConsoleService> consoleService | |
| 894 (do_GetService(XPC_CONSOLE_CONTRACTID)); | |
| 895 if (nullptr != consoleService) { | |
| 896 nsresult rv; | |
| 897 nsCOMPtr<nsIScriptError> scriptError; | |
| 898 nsCOMPtr<nsISupports> errorData; | |
| 899 rv = xpc_exception->GetData(getter_AddRefs(errorData)); | |
| 900 if (NS_SUCCEEDED(rv)) | |
| 901 scriptError = do_QueryInterface(errorData); | |
| 902 | |
| 903 if (nullptr == scriptError) { | |
| 904 // No luck getting one from the exception, so | |
| 905 // try to cook one up. | |
| 906 scriptError = do_CreateInstance(XPC_SCRIPT_ERROR_CONTRACTID); | |
| 907 if (nullptr != scriptError) { | |
| 908 nsCString newMessage; | |
| 909 rv = xpc_exception->ToString(newMessage); | |
| 910 if (NS_SUCCEEDED(rv)) { | |
| 911 // try to get filename, lineno from the first | |
| 912 // stack frame location. | |
| 913 int32_t lineNumber = 0; | |
| 914 nsString sourceName; | |
| 915 | |
| 916 nsCOMPtr<nsIStackFrame> location; | |
| 917 xpc_exception-> | |
| 918 GetLocation(getter_AddRefs(location)); | |
| 919 if (location) { | |
| 920 // Get line number w/o checking; 0 is ok. | |
| 921 location->GetLineNumber(&lineNumber); | |
| 922 | |
| 923 // get a filename. | |
| 924 rv = location->GetFilename(sourceName); | |
| 925 } | |
| 926 | |
| 927 rv = scriptError->InitWithWindowID(NS_ConvertUTF8toUTF16(newMessage), | |
| 928 sourceName, | |
| 929 EmptyString(), | |
| 930 lineNumber, 0, 0, | |
| 931 "XPConnect JavaScript", | |
| 932 nsJSUtils::GetCurrentlyRunningCodeInnerWindowID(cx)); | |
| 933 if (NS_FAILED(rv)) | |
| 934 scriptError = nullptr; | |
| 935 } | |
| 936 } | |
| 937 } | |
| 938 if (nullptr != scriptError) | |
| 939 consoleService->LogMessage(scriptError); | |
| 940 } | |
| 941 } | |
| 942 // Whether or not it passes the 'reportable' test, it might | |
| 943 // still be an error and we have to do the right thing here... | |
| 944 if (NS_FAILED(e_result)) { | |
| 945 XPCJSRuntime::Get()->SetPendingException(xpc_exception); | |
| 946 return e_result; | |
| 947 } | |
| 948 } | |
| 949 } else { | |
| 950 // see if JS code signaled failure result without throwing exception | |
| 951 if (NS_FAILED(pending_result)) { | |
| 952 return pending_result; | |
| 953 } | |
| 954 } | |
| 955 return NS_ERROR_FAILURE; | |
| 956 } | |
| 957 | |
| 958 NS_IMETHODIMP | |
| 959 nsXPCWrappedJSClass::CallMethod(nsXPCWrappedJS* wrapper, uint16_t methodIndex, | |
| 960 const XPTMethodDescriptor* info_, | |
| 961 nsXPTCMiniVariant* nativeParams) | |
| 962 { | |
| 963 jsval* sp = nullptr; | |
| 964 jsval* argv = nullptr; | |
| 965 uint8_t i; | |
| 966 nsresult retval = NS_ERROR_FAILURE; | |
| 967 nsresult pending_result = NS_OK; | |
| 968 bool success; | |
| 969 bool readyToDoTheCall = false; | |
| 970 nsID param_iid; | |
| 971 const nsXPTMethodInfo* info = static_cast<const nsXPTMethodInfo*>(info_); | |
| 972 const char* name = info->name; | |
| 973 bool foundDependentParam; | |
| 974 | |
| 975 // Make sure not to set the callee on ccx until after we've gone through | |
| 976 // the whole nsIXPCFunctionThisTranslator bit. That code uses ccx to | |
| 977 // convert natives to JSObjects, but we do NOT plan to pass those JSObjects | |
| 978 // to our real callee. | |
| 979 AutoPushJSContext context(GetContextFromObjectOrDefault(wrapper)); | |
| 980 XPCCallContext ccx(NATIVE_CALLER, context); | |
| 981 if (!ccx.IsValid()) | |
| 982 return retval; | |
| 983 | |
| 984 XPCContext *xpcc = ccx.GetXPCContext(); | |
| 985 JSContext *cx = ccx.GetJSContext(); | |
| 986 | |
| 987 if (!cx || !xpcc || !IsReflectable(methodIndex)) | |
| 988 return NS_ERROR_FAILURE; | |
| 989 | |
| 990 // [implicit_jscontext] and [optional_argc] have a different calling | |
| 991 // convention, which we don't support for JS-implemented components. | |
| 992 if (info->WantsOptArgc() || info->WantsContext()) { | |
| 993 const char *str = "IDL methods marked with [implicit_jscontext] " | |
| 994 "or [optional_argc] may not be implemented in JS"; | |
| 995 // Throw and warn for good measure. | |
| 996 JS_ReportError(cx, str); | |
| 997 NS_WARNING(str); | |
| 998 return NS_ERROR_FAILURE; | |
| 999 } | |
| 1000 | |
| 1001 RootedValue fval(cx); | |
| 1002 RootedObject obj(cx, wrapper->GetJSObject()); | |
| 1003 RootedObject thisObj(cx, obj); | |
| 1004 | |
| 1005 JSAutoCompartment ac(cx, obj); | |
| 1006 | |
| 1007 AutoValueVector args(cx); | |
| 1008 AutoScriptEvaluate scriptEval(cx); | |
| 1009 | |
| 1010 // XXX ASSUMES that retval is last arg. The xpidl compiler ensures this. | |
| 1011 uint8_t paramCount = info->num_args; | |
| 1012 uint8_t argc = paramCount - | |
| 1013 (paramCount && XPT_PD_IS_RETVAL(info->params[paramCount-1].flags) ? 1 : 0); | |
| 1014 | |
| 1015 if (!scriptEval.StartEvaluating(obj, xpcWrappedJSErrorReporter)) | |
| 1016 goto pre_call_clean_up; | |
| 1017 | |
| 1018 xpcc->SetPendingResult(pending_result); | |
| 1019 xpcc->SetException(nullptr); | |
| 1020 XPCJSRuntime::Get()->SetPendingException(nullptr); | |
| 1021 | |
| 1022 // We use js_Invoke so that the gcthings we use as args will be rooted by | |
| 1023 // the engine as we do conversions and prepare to do the function call. | |
| 1024 | |
| 1025 // setup stack | |
| 1026 | |
| 1027 // if this isn't a function call then we don't need to push extra stuff | |
| 1028 if (!(XPT_MD_IS_SETTER(info->flags) || XPT_MD_IS_GETTER(info->flags))) { | |
| 1029 // We get fval before allocating the stack to avoid gc badness that can | |
| 1030 // happen if the GetProperty call leaves our request and the gc runs | |
| 1031 // while the stack we allocate contains garbage. | |
| 1032 | |
| 1033 // If the interface is marked as a [function] then we will assume that | |
| 1034 // our JSObject is a function and not an object with a named method. | |
| 1035 | |
| 1036 bool isFunction; | |
| 1037 if (NS_FAILED(mInfo->IsFunction(&isFunction))) | |
| 1038 goto pre_call_clean_up; | |
| 1039 | |
| 1040 // In the xpidl [function] case we are making sure now that the | |
| 1041 // JSObject is callable. If it is *not* callable then we silently | |
| 1042 // fallback to looking up the named property... | |
| 1043 // (because jst says he thinks this fallback is 'The Right Thing'.) | |
| 1044 // | |
| 1045 // In the normal (non-function) case we just lookup the property by | |
| 1046 // name and as long as the object has such a named property we go ahead | |
| 1047 // and try to make the call. If it turns out the named property is not | |
| 1048 // a callable object then the JS engine will throw an error and we'll | |
| 1049 // pass this along to the caller as an exception/result code. | |
| 1050 | |
| 1051 fval = ObjectValue(*obj); | |
| 1052 if (isFunction && | |
| 1053 JS_TypeOfValue(ccx, fval) == JSTYPE_FUNCTION) { | |
| 1054 | |
| 1055 // We may need to translate the 'this' for the function object. | |
| 1056 | |
| 1057 if (paramCount) { | |
| 1058 const nsXPTParamInfo& firstParam = info->params[0]; | |
| 1059 if (firstParam.IsIn()) { | |
| 1060 const nsXPTType& firstType = firstParam.GetType(); | |
| 1061 | |
| 1062 if (firstType.IsInterfacePointer()) { | |
| 1063 nsIXPCFunctionThisTranslator* translator; | |
| 1064 | |
| 1065 IID2ThisTranslatorMap* map = | |
| 1066 mRuntime->GetThisTranslatorMap(); | |
| 1067 | |
| 1068 translator = map->Find(mIID); | |
| 1069 | |
| 1070 if (translator) { | |
| 1071 nsCOMPtr<nsISupports> newThis; | |
| 1072 if (NS_FAILED(translator-> | |
| 1073 TranslateThis((nsISupports*)nativeParams[0].val.p, | |
| 1074 getter_AddRefs(newThis)))) { | |
| 1075 goto pre_call_clean_up; | |
| 1076 } | |
| 1077 if (newThis) { | |
| 1078 RootedValue v(cx); | |
| 1079 xpcObjectHelper helper(newThis); | |
| 1080 bool ok = | |
| 1081 XPCConvert::NativeInterface2JSObject( | |
| 1082 &v, nullptr, helper, nullptr, | |
| 1083 nullptr, false, nullptr); | |
| 1084 if (!ok) { | |
| 1085 goto pre_call_clean_up; | |
| 1086 } | |
| 1087 thisObj = JSVAL_TO_OBJECT(v); | |
| 1088 if (!JS_WrapObject(cx, &thisObj)) | |
| 1089 goto pre_call_clean_up; | |
| 1090 } | |
| 1091 } | |
| 1092 } | |
| 1093 } | |
| 1094 } | |
| 1095 } else { | |
| 1096 if (!JS_GetProperty(cx, obj, name, &fval)) | |
| 1097 goto pre_call_clean_up; | |
| 1098 // XXX We really want to factor out the error reporting better and | |
| 1099 // specifically report the failure to find a function with this name. | |
| 1100 // This is what we do below if the property is found but is not a | |
| 1101 // function. We just need to factor better so we can get to that | |
| 1102 // reporting path from here. | |
| 1103 | |
| 1104 thisObj = obj; | |
| 1105 } | |
| 1106 } | |
| 1107 | |
| 1108 if (!args.resize(argc)) { | |
| 1109 retval = NS_ERROR_OUT_OF_MEMORY; | |
| 1110 goto pre_call_clean_up; | |
| 1111 } | |
| 1112 | |
| 1113 argv = args.begin(); | |
| 1114 sp = argv; | |
| 1115 | |
| 1116 // build the args | |
| 1117 // NB: This assignment *looks* wrong because we haven't yet called our | |
| 1118 // function. However, we *have* already entered the compartmen that we're | |
| 1119 // about to call, and that's the global that we want here. In other words: | |
| 1120 // we're trusting the JS engine to come up with a good global to use for | |
| 1121 // our object (whatever it was). | |
| 1122 for (i = 0; i < argc; i++) { | |
| 1123 const nsXPTParamInfo& param = info->params[i]; | |
| 1124 const nsXPTType& type = param.GetType(); | |
| 1125 nsXPTType datum_type; | |
| 1126 uint32_t array_count; | |
| 1127 bool isArray = type.IsArray(); | |
| 1128 RootedValue val(cx, NullValue()); | |
| 1129 bool isSizedString = isArray ? | |
| 1130 false : | |
| 1131 type.TagPart() == nsXPTType::T_PSTRING_SIZE_IS || | |
| 1132 type.TagPart() == nsXPTType::T_PWSTRING_SIZE_IS; | |
| 1133 | |
| 1134 | |
| 1135 // verify that null was not passed for 'out' param | |
| 1136 if (param.IsOut() && !nativeParams[i].val.p) { | |
| 1137 retval = NS_ERROR_INVALID_ARG; | |
| 1138 goto pre_call_clean_up; | |
| 1139 } | |
| 1140 | |
| 1141 if (isArray) { | |
| 1142 if (NS_FAILED(mInfo->GetTypeForParam(methodIndex, ¶m, 1, | |
| 1143 &datum_type))) | |
| 1144 goto pre_call_clean_up; | |
| 1145 } else | |
| 1146 datum_type = type; | |
| 1147 | |
| 1148 if (param.IsIn()) { | |
| 1149 nsXPTCMiniVariant* pv; | |
| 1150 | |
| 1151 if (param.IsIndirect()) | |
| 1152 pv = (nsXPTCMiniVariant*) nativeParams[i].val.p; | |
| 1153 else | |
| 1154 pv = &nativeParams[i]; | |
| 1155 | |
| 1156 if (datum_type.IsInterfacePointer() && | |
| 1157 !GetInterfaceTypeFromParam(cx, info, param, methodIndex, | |
| 1158 datum_type, nativeParams, | |
| 1159 ¶m_iid)) | |
| 1160 goto pre_call_clean_up; | |
| 1161 | |
| 1162 if (isArray || isSizedString) { | |
| 1163 if (!GetArraySizeFromParam(cx, info, param, methodIndex, | |
| 1164 i, nativeParams, &array_count)) | |
| 1165 goto pre_call_clean_up; | |
| 1166 } | |
| 1167 | |
| 1168 if (isArray) { | |
| 1169 if (!XPCConvert::NativeArray2JS(&val, | |
| 1170 (const void**)&pv->val, | |
| 1171 datum_type, ¶m_iid, | |
| 1172 array_count, nullptr)) | |
| 1173 goto pre_call_clean_up; | |
| 1174 } else if (isSizedString) { | |
| 1175 if (!XPCConvert::NativeStringWithSize2JS(&val, | |
| 1176 (const void*)&pv->val, | |
| 1177 datum_type, | |
| 1178 array_count, nullptr)) | |
| 1179 goto pre_call_clean_up; | |
| 1180 } else { | |
| 1181 if (!XPCConvert::NativeData2JS(&val, &pv->val, type, | |
| 1182 ¶m_iid, nullptr)) | |
| 1183 goto pre_call_clean_up; | |
| 1184 } | |
| 1185 } | |
| 1186 | |
| 1187 if (param.IsOut() || param.IsDipper()) { | |
| 1188 // create an 'out' object | |
| 1189 RootedObject out_obj(cx, NewOutObject(cx, obj)); | |
| 1190 if (!out_obj) { | |
| 1191 retval = NS_ERROR_OUT_OF_MEMORY; | |
| 1192 goto pre_call_clean_up; | |
| 1193 } | |
| 1194 | |
| 1195 if (param.IsIn()) { | |
| 1196 if (!JS_SetPropertyById(cx, out_obj, | |
| 1197 mRuntime->GetStringID(XPCJSRuntime::IDX_VALUE), | |
| 1198 val)) { | |
| 1199 goto pre_call_clean_up; | |
| 1200 } | |
| 1201 } | |
| 1202 *sp++ = OBJECT_TO_JSVAL(out_obj); | |
| 1203 } else | |
| 1204 *sp++ = val; | |
| 1205 } | |
| 1206 | |
| 1207 readyToDoTheCall = true; | |
| 1208 | |
| 1209 pre_call_clean_up: | |
| 1210 // clean up any 'out' params handed in | |
| 1211 for (i = 0; i < paramCount; i++) { | |
| 1212 const nsXPTParamInfo& param = info->params[i]; | |
| 1213 if (!param.IsOut()) | |
| 1214 continue; | |
| 1215 | |
| 1216 const nsXPTType& type = param.GetType(); | |
| 1217 if (!type.deprecated_IsPointer()) | |
| 1218 continue; | |
| 1219 void* p; | |
| 1220 if (!(p = nativeParams[i].val.p)) | |
| 1221 continue; | |
| 1222 | |
| 1223 if (param.IsIn()) { | |
| 1224 if (type.IsArray()) { | |
| 1225 void** pp; | |
| 1226 if (nullptr != (pp = *((void***)p))) { | |
| 1227 | |
| 1228 // we need to get the array length and iterate the items | |
| 1229 uint32_t array_count; | |
| 1230 nsXPTType datum_type; | |
| 1231 | |
| 1232 if (NS_SUCCEEDED(mInfo->GetTypeForParam(methodIndex, ¶m, | |
| 1233 1, &datum_type)) && | |
| 1234 datum_type.deprecated_IsPointer() && | |
| 1235 GetArraySizeFromParam(cx, info, param, methodIndex, | |
| 1236 i, nativeParams, &array_count) && | |
| 1237 array_count) { | |
| 1238 | |
| 1239 CleanupPointerArray(datum_type, array_count, pp); | |
| 1240 } | |
| 1241 | |
| 1242 // always release the array if it is inout | |
| 1243 nsMemory::Free(pp); | |
| 1244 } | |
| 1245 } else | |
| 1246 CleanupPointerTypeObject(type, (void**)p); | |
| 1247 } | |
| 1248 *((void**)p) = nullptr; | |
| 1249 } | |
| 1250 | |
| 1251 // Make sure "this" doesn't get deleted during this call. | |
| 1252 nsCOMPtr<nsIXPCWrappedJSClass> kungFuDeathGrip(this); | |
| 1253 | |
| 1254 if (!readyToDoTheCall) | |
| 1255 return retval; | |
| 1256 | |
| 1257 // do the deed - note exceptions | |
| 1258 | |
| 1259 JS_ClearPendingException(cx); | |
| 1260 | |
| 1261 RootedValue rval(cx); | |
| 1262 if (XPT_MD_IS_GETTER(info->flags)) { | |
| 1263 success = JS_GetProperty(cx, obj, name, &rval); | |
| 1264 } else if (XPT_MD_IS_SETTER(info->flags)) { | |
| 1265 rval = *argv; | |
| 1266 success = JS_SetProperty(cx, obj, name, rval); | |
| 1267 } else { | |
| 1268 if (!JSVAL_IS_PRIMITIVE(fval)) { | |
| 1269 AutoSaveContextOptions asco(cx); | |
| 1270 ContextOptionsRef(cx).setDontReportUncaught(true); | |
| 1271 | |
| 1272 success = JS_CallFunctionValue(cx, thisObj, fval, args, &rval); | |
| 1273 } else { | |
| 1274 // The property was not an object so can't be a function. | |
| 1275 // Let's build and 'throw' an exception. | |
| 1276 | |
| 1277 static const nsresult code = | |
| 1278 NS_ERROR_XPC_JSOBJECT_HAS_NO_FUNCTION_NAMED; | |
| 1279 static const char format[] = "%s \"%s\""; | |
| 1280 const char * msg; | |
| 1281 char* sz = nullptr; | |
| 1282 | |
| 1283 if (nsXPCException::NameAndFormatForNSResult(code, nullptr, &msg) && msg) | |
| 1284 sz = JS_smprintf(format, msg, name); | |
| 1285 | |
| 1286 nsCOMPtr<nsIException> e; | |
| 1287 | |
| 1288 XPCConvert::ConstructException(code, sz, GetInterfaceName(), name, | |
| 1289 nullptr, getter_AddRefs(e), nullptr, nullptr); | |
| 1290 xpcc->SetException(e); | |
| 1291 if (sz) | |
| 1292 JS_smprintf_free(sz); | |
| 1293 success = false; | |
| 1294 } | |
| 1295 } | |
| 1296 | |
| 1297 if (!success) { | |
| 1298 bool forceReport; | |
| 1299 if (NS_FAILED(mInfo->IsFunction(&forceReport))) | |
| 1300 forceReport = false; | |
| 1301 | |
| 1302 // May also want to check if we're moving from content->chrome and force | |
| 1303 // a report in that case. | |
| 1304 | |
| 1305 return CheckForException(ccx, name, GetInterfaceName(), forceReport); | |
| 1306 } | |
| 1307 | |
| 1308 XPCJSRuntime::Get()->SetPendingException(nullptr); // XXX necessary? | |
| 1309 | |
| 1310 // convert out args and result | |
| 1311 // NOTE: this is the total number of native params, not just the args | |
| 1312 // Convert independent params only. | |
| 1313 // When we later convert the dependent params (if any) we will know that | |
| 1314 // the params upon which they depend will have already been converted - | |
| 1315 // regardless of ordering. | |
| 1316 | |
| 1317 foundDependentParam = false; | |
| 1318 for (i = 0; i < paramCount; i++) { | |
| 1319 const nsXPTParamInfo& param = info->params[i]; | |
| 1320 MOZ_ASSERT(!param.IsShared(), "[shared] implies [noscript]!"); | |
| 1321 if (!param.IsOut() && !param.IsDipper()) | |
| 1322 continue; | |
| 1323 | |
| 1324 const nsXPTType& type = param.GetType(); | |
| 1325 if (type.IsDependent()) { | |
| 1326 foundDependentParam = true; | |
| 1327 continue; | |
| 1328 } | |
| 1329 | |
| 1330 RootedValue val(cx); | |
| 1331 uint8_t type_tag = type.TagPart(); | |
| 1332 nsXPTCMiniVariant* pv; | |
| 1333 | |
| 1334 if (param.IsDipper()) | |
| 1335 pv = (nsXPTCMiniVariant*) &nativeParams[i].val.p; | |
| 1336 else | |
| 1337 pv = (nsXPTCMiniVariant*) nativeParams[i].val.p; | |
| 1338 | |
| 1339 if (param.IsRetval()) | |
| 1340 val = rval; | |
| 1341 else if (argv[i].isPrimitive()) | |
| 1342 break; | |
| 1343 else { | |
| 1344 RootedObject obj(cx, &argv[i].toObject()); | |
| 1345 if (!JS_GetPropertyById(cx, obj, | |
| 1346 mRuntime->GetStringID(XPCJSRuntime::IDX_VALUE), | |
| 1347 &val)) | |
| 1348 break; | |
| 1349 } | |
| 1350 | |
| 1351 // setup allocator and/or iid | |
| 1352 | |
| 1353 if (type_tag == nsXPTType::T_INTERFACE) { | |
| 1354 if (NS_FAILED(GetInterfaceInfo()-> | |
| 1355 GetIIDForParamNoAlloc(methodIndex, ¶m, | |
| 1356 ¶m_iid))) | |
| 1357 break; | |
| 1358 } | |
| 1359 | |
| 1360 // see bug #961488 | |
| 1361 #if (defined(XP_UNIX) && !defined(XP_MACOSX) && !defined(_AIX)) && \ | |
| 1362 ((defined(__sparc) && !defined(__sparcv9) && !defined(__sparcv9__)) || \ | |
| 1363 (defined(__powerpc__) && !defined (__powerpc64__))) | |
| 1364 if (type_tag == nsXPTType::T_JSVAL) { | |
| 1365 if (!XPCConvert::JSData2Native(*(void**)(&pv->val), val, type, | |
| 1366 !param.IsDipper(), ¶m_iid, nullptr)) | |
| 1367 break; | |
| 1368 } else | |
| 1369 #endif | |
| 1370 { | |
| 1371 if (!XPCConvert::JSData2Native(&pv->val, val, type, | |
| 1372 !param.IsDipper(), ¶m_iid, nullptr)) | |
| 1373 break; | |
| 1374 } | |
| 1375 } | |
| 1376 | |
| 1377 // if any params were dependent, then we must iterate again to convert them. | |
| 1378 if (foundDependentParam && i == paramCount) { | |
| 1379 for (i = 0; i < paramCount; i++) { | |
| 1380 const nsXPTParamInfo& param = info->params[i]; | |
| 1381 if (!param.IsOut()) | |
| 1382 continue; | |
| 1383 | |
| 1384 const nsXPTType& type = param.GetType(); | |
| 1385 if (!type.IsDependent()) | |
| 1386 continue; | |
| 1387 | |
| 1388 RootedValue val(cx); | |
| 1389 nsXPTCMiniVariant* pv; | |
| 1390 nsXPTType datum_type; | |
| 1391 uint32_t array_count; | |
| 1392 bool isArray = type.IsArray(); | |
| 1393 bool isSizedString = isArray ? | |
| 1394 false : | |
| 1395 type.TagPart() == nsXPTType::T_PSTRING_SIZE_IS || | |
| 1396 type.TagPart() == nsXPTType::T_PWSTRING_SIZE_IS; | |
| 1397 | |
| 1398 pv = (nsXPTCMiniVariant*) nativeParams[i].val.p; | |
| 1399 | |
| 1400 if (param.IsRetval()) | |
| 1401 val = rval; | |
| 1402 else { | |
| 1403 RootedObject obj(cx, &argv[i].toObject()); | |
| 1404 if (!JS_GetPropertyById(cx, obj, | |
| 1405 mRuntime->GetStringID(XPCJSRuntime::IDX_VALUE), | |
| 1406 &val)) | |
| 1407 break; | |
| 1408 } | |
| 1409 | |
| 1410 // setup allocator and/or iid | |
| 1411 | |
| 1412 if (isArray) { | |
| 1413 if (NS_FAILED(mInfo->GetTypeForParam(methodIndex, ¶m, 1, | |
| 1414 &datum_type))) | |
| 1415 break; | |
| 1416 } else | |
| 1417 datum_type = type; | |
| 1418 | |
| 1419 if (datum_type.IsInterfacePointer()) { | |
| 1420 if (!GetInterfaceTypeFromParam(cx, info, param, methodIndex, | |
| 1421 datum_type, nativeParams, | |
| 1422 ¶m_iid)) | |
| 1423 break; | |
| 1424 } | |
| 1425 | |
| 1426 if (isArray || isSizedString) { | |
| 1427 if (!GetArraySizeFromParam(cx, info, param, methodIndex, | |
| 1428 i, nativeParams, &array_count)) | |
| 1429 break; | |
| 1430 } | |
| 1431 | |
| 1432 if (isArray) { | |
| 1433 if (array_count && | |
| 1434 !XPCConvert::JSArray2Native((void**)&pv->val, val, | |
| 1435 array_count, datum_type, | |
| 1436 ¶m_iid, nullptr)) | |
| 1437 break; | |
| 1438 } else if (isSizedString) { | |
| 1439 if (!XPCConvert::JSStringWithSize2Native((void*)&pv->val, val, | |
| 1440 array_count, datum_type, | |
| 1441 nullptr)) | |
| 1442 break; | |
| 1443 } else { | |
| 1444 if (!XPCConvert::JSData2Native(&pv->val, val, type, | |
| 1445 true, ¶m_iid, | |
| 1446 nullptr)) | |
| 1447 break; | |
| 1448 } | |
| 1449 } | |
| 1450 } | |
| 1451 | |
| 1452 if (i != paramCount) { | |
| 1453 // We didn't manage all the result conversions! | |
| 1454 // We have to cleanup any junk that *did* get converted. | |
| 1455 | |
| 1456 for (uint8_t k = 0; k < i; k++) { | |
| 1457 const nsXPTParamInfo& param = info->params[k]; | |
| 1458 if (!param.IsOut()) | |
| 1459 continue; | |
| 1460 const nsXPTType& type = param.GetType(); | |
| 1461 if (!type.deprecated_IsPointer()) | |
| 1462 continue; | |
| 1463 void* p; | |
| 1464 if (!(p = nativeParams[k].val.p)) | |
| 1465 continue; | |
| 1466 | |
| 1467 if (type.IsArray()) { | |
| 1468 void** pp; | |
| 1469 if (nullptr != (pp = *((void***)p))) { | |
| 1470 // we need to get the array length and iterate the items | |
| 1471 uint32_t array_count; | |
| 1472 nsXPTType datum_type; | |
| 1473 | |
| 1474 if (NS_SUCCEEDED(mInfo->GetTypeForParam(methodIndex, ¶m, | |
| 1475 1, &datum_type)) && | |
| 1476 datum_type.deprecated_IsPointer() && | |
| 1477 GetArraySizeFromParam(cx, info, param, methodIndex, | |
| 1478 k, nativeParams, &array_count) && | |
| 1479 array_count) { | |
| 1480 | |
| 1481 CleanupPointerArray(datum_type, array_count, pp); | |
| 1482 } | |
| 1483 nsMemory::Free(pp); | |
| 1484 } | |
| 1485 } else | |
| 1486 CleanupPointerTypeObject(type, (void**)p); | |
| 1487 *((void**)p) = nullptr; | |
| 1488 } | |
| 1489 } else { | |
| 1490 // set to whatever the JS code might have set as the result | |
| 1491 retval = pending_result; | |
| 1492 } | |
| 1493 | |
| 1494 return retval; | |
| 1495 } | |
| 1496 | |
| 1497 const char* | |
| 1498 nsXPCWrappedJSClass::GetInterfaceName() | |
| 1499 { | |
| 1500 if (!mName) | |
| 1501 mInfo->GetName(&mName); | |
| 1502 return mName; | |
| 1503 } | |
| 1504 | |
| 1505 static void | |
| 1506 FinalizeStub(JSFreeOp *fop, JSObject *obj) | |
| 1507 { | |
| 1508 } | |
| 1509 | |
| 1510 static const JSClass XPCOutParamClass = { | |
| 1511 "XPCOutParam", | |
| 1512 0, | |
| 1513 JS_PropertyStub, | |
| 1514 JS_DeletePropertyStub, | |
| 1515 JS_PropertyStub, | |
| 1516 JS_StrictPropertyStub, | |
| 1517 JS_EnumerateStub, | |
| 1518 JS_ResolveStub, | |
| 1519 JS_ConvertStub, | |
| 1520 FinalizeStub, | |
| 1521 nullptr, /* call */ | |
| 1522 nullptr, /* hasInstance */ | |
| 1523 nullptr, /* construct */ | |
| 1524 nullptr /* trace */ | |
| 1525 }; | |
| 1526 | |
| 1527 bool | |
| 1528 xpc::IsOutObject(JSContext* cx, JSObject* obj) | |
| 1529 { | |
| 1530 return js::GetObjectJSClass(obj) == &XPCOutParamClass; | |
| 1531 } | |
| 1532 | |
| 1533 JSObject* | |
| 1534 xpc::NewOutObject(JSContext* cx, JSObject* scope) | |
| 1535 { | |
| 1536 RootedObject global(cx, JS_GetGlobalForObject(cx, scope)); | |
| 1537 return JS_NewObject(cx, nullptr, NullPtr(), global); | |
| 1538 } | |
| 1539 | |
| 1540 | |
| 1541 NS_IMETHODIMP | |
| 1542 nsXPCWrappedJSClass::DebugDump(int16_t depth) | |
| 1543 { | |
| 1544 #ifdef DEBUG | |
| 1545 depth-- ; | |
| 1546 XPC_LOG_ALWAYS(("nsXPCWrappedJSClass @ %x with mRefCnt = %d", this, mRefCnt.get())); | |
| 1547 XPC_LOG_INDENT(); | |
| 1548 char* name; | |
| 1549 mInfo->GetName(&name); | |
| 1550 XPC_LOG_ALWAYS(("interface name is %s", name)); | |
| 1551 if (name) | |
| 1552 nsMemory::Free(name); | |
| 1553 char * iid = mIID.ToString(); | |
| 1554 XPC_LOG_ALWAYS(("IID number is %s", iid ? iid : "invalid")); | |
| 1555 if (iid) | |
| 1556 NS_Free(iid); | |
| 1557 XPC_LOG_ALWAYS(("InterfaceInfo @ %x", mInfo.get())); | |
| 1558 uint16_t methodCount = 0; | |
| 1559 if (depth) { | |
| 1560 uint16_t i; | |
| 1561 nsCOMPtr<nsIInterfaceInfo> parent; | |
| 1562 XPC_LOG_INDENT(); | |
| 1563 mInfo->GetParent(getter_AddRefs(parent)); | |
| 1564 XPC_LOG_ALWAYS(("parent @ %x", parent.get())); | |
| 1565 mInfo->GetMethodCount(&methodCount); | |
| 1566 XPC_LOG_ALWAYS(("MethodCount = %d", methodCount)); | |
| 1567 mInfo->GetConstantCount(&i); | |
| 1568 XPC_LOG_ALWAYS(("ConstantCount = %d", i)); | |
| 1569 XPC_LOG_OUTDENT(); | |
| 1570 } | |
| 1571 XPC_LOG_ALWAYS(("mRuntime @ %x", mRuntime)); | |
| 1572 XPC_LOG_ALWAYS(("mDescriptors @ %x count = %d", mDescriptors, methodCount)); | |
| 1573 if (depth && mDescriptors && methodCount) { | |
| 1574 depth--; | |
| 1575 XPC_LOG_INDENT(); | |
| 1576 for (uint16_t i = 0; i < methodCount; i++) { | |
| 1577 XPC_LOG_ALWAYS(("Method %d is %s%s", \ | |
| 1578 i, IsReflectable(i) ? "":" NOT ","reflectable")); | |
| 1579 } | |
| 1580 XPC_LOG_OUTDENT(); | |
| 1581 depth++; | |
| 1582 } | |
| 1583 XPC_LOG_OUTDENT(); | |
| 1584 #endif | |
| 1585 return NS_OK; | |
| 1586 } |
