src/third_party/WebKit/Source/bindings/v8/custom/V8InjectedScriptHostCustom.cpp

   1 /*
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   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met:
   7  *
   8  *     * Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *     * Redistributions in binary form must reproduce the above
  11  * copyright notice, this list of conditions and the following disclaimer
  12  * in the documentation and/or other materials provided with the
  13  * distribution.
  14  *     * Neither the name of Google Inc. nor the names of its
  15  * contributors may be used to endorse or promote products derived from
  16  * this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include "config.h"
  32 #include "V8InjectedScriptHost.h"
  33
  34 #include "V8Database.h"
  35 #include "V8EventTarget.h"
  36 #include "V8HTMLAllCollection.h"
  37 #include "V8HTMLCollection.h"
  38 #include "V8Node.h"
  39 #include "V8NodeList.h"
  40 #include "V8Storage.h"
  41 #include "bindings/v8/BindingSecurity.h"
  42 #include "bindings/v8/ExceptionState.h"
  43 #include "bindings/v8/ScriptDebugServer.h"
  44 #include "bindings/v8/ScriptValue.h"
  45 #include "bindings/v8/V8AbstractEventListener.h"
  46 #include "bindings/v8/V8Binding.h"
  47 #include "bindings/v8/V8ScriptRunner.h"
  48 #include "bindings/v8/custom/V8Float32ArrayCustom.h"
  49 #include "bindings/v8/custom/V8Float64ArrayCustom.h"
  50 #include "bindings/v8/custom/V8Int16ArrayCustom.h"
  51 #include "bindings/v8/custom/V8Int32ArrayCustom.h"
  52 #include "bindings/v8/custom/V8Int8ArrayCustom.h"
  53 #include "bindings/v8/custom/V8Uint16ArrayCustom.h"
  54 #include "bindings/v8/custom/V8Uint32ArrayCustom.h"
  55 #include "bindings/v8/custom/V8Uint8ArrayCustom.h"
  56 #include "bindings/v8/custom/V8Uint8ClampedArrayCustom.h"
  57 #include "core/events/EventTarget.h"
  58 #include "core/frame/DOMWindow.h"
  59 #include "core/inspector/InjectedScript.h"
  60 #include "core/inspector/InjectedScriptHost.h"
  61 #include "core/inspector/InspectorDOMAgent.h"
  62 #include "modules/webdatabase/Database.h"
  63 #include "platform/JSONValues.h"
  64
  65 namespace WebCore {
  66
  67 Node* InjectedScriptHost::scriptValueAsNode(ScriptValue value)
  68 {
  69     v8::HandleScope scope(value.isolate());
  70     if (!value.isObject() || value.isNull())
  71         return 0;
  72     return V8Node::toNative(v8::Handle<v8::Object>::Cast(value.v8Value()));
  73 }
  74
  75 ScriptValue InjectedScriptHost::nodeAsScriptValue(ScriptState* state, Node* node)
  76 {
  77     v8::Isolate* isolate = state->isolate();
  78     v8::HandleScope scope(isolate);
  79     v8::Local<v8::Context> context = state->context();
  80     v8::Context::Scope contextScope(context);
  81
  82     ExceptionState exceptionState(v8::Handle<v8::Object>(), isolate);
  83     if (!BindingSecurity::shouldAllowAccessToNode(isolate, node, exceptionState))
  84         return ScriptValue(v8::Null(isolate), isolate);
  85     return ScriptValue(toV8(node, v8::Handle<v8::Object>(), isolate), isolate);
  86 }
  87
  88 void V8InjectedScriptHost::inspectedObjectMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
  89 {
  90     if (info.Length() < 1)
  91         return;
  92
  93     if (!info[0]->IsInt32()) {
  94         throwTypeError("argument has to be an integer", info.GetIsolate());
  95         return;
  96     }
  97
  98     InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
  99     InjectedScriptHost::InspectableObject* object = host->inspectedObject(info[0]->ToInt32()->Value());
 100     v8SetReturnValue(info, object->get(ScriptState::current()).v8Value());
 101 }
 102
 103 void V8InjectedScriptHost::internalConstructorNameMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 104 {
 105     if (info.Length() < 1)
 106         return;
 107
 108     if (!info[0]->IsObject())
 109         return;
 110
 111     v8SetReturnValue(info, info[0]->ToObject()->GetConstructorName());
 112 }
 113
 114 void V8InjectedScriptHost::isHTMLAllCollectionMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 115 {
 116     if (info.Length() < 1)
 117         return;
 118
 119     if (!info[0]->IsObject()) {
 120         v8SetReturnValue(info, false);
 121         return;
 122     }
 123
 124     v8SetReturnValue(info, V8HTMLAllCollection::hasInstance(info[0], info.GetIsolate()));
 125 }
 126
 127 void V8InjectedScriptHost::typeMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 128 {
 129     if (info.Length() < 1)
 130         return;
 131     v8::Isolate* isolate = info.GetIsolate();
 132
 133     v8::Handle<v8::Value> value = info[0];
 134     if (value->IsString()) {
 135         v8SetReturnValue(info, v8AtomicString(isolate, "string"));
 136         return;
 137     }
 138     if (value->IsArray()) {
 139         v8SetReturnValue(info, v8AtomicString(isolate, "array"));
 140         return;
 141     }
 142     if (value->IsBoolean()) {
 143         v8SetReturnValue(info, v8AtomicString(isolate, "boolean"));
 144         return;
 145     }
 146     if (value->IsNumber()) {
 147         v8SetReturnValue(info, v8AtomicString(isolate, "number"));
 148         return;
 149     }
 150     if (value->IsDate()) {
 151         v8SetReturnValue(info, v8AtomicString(isolate, "date"));
 152         return;
 153     }
 154     if (value->IsRegExp()) {
 155         v8SetReturnValue(info, v8AtomicString(isolate, "regexp"));
 156         return;
 157     }
 158     if (V8Node::hasInstance(value, isolate)) {
 159         v8SetReturnValue(info, v8AtomicString(isolate, "node"));
 160         return;
 161     }
 162     if (V8NodeList::hasInstance(value, isolate)) {
 163         v8SetReturnValue(info, v8AtomicString(isolate, "array"));
 164         return;
 165     }
 166     if (V8HTMLCollection::hasInstance(value, isolate)) {
 167         v8SetReturnValue(info, v8AtomicString(isolate, "array"));
 168         return;
 169     }
 170     if (V8Int8Array::hasInstance(value, isolate) || V8Int16Array::hasInstance(value, isolate) || V8Int32Array::hasInstance(value, isolate)) {
 171         v8SetReturnValue(info, v8AtomicString(isolate, "array"));
 172         return;
 173     }
 174     if (V8Uint8Array::hasInstance(value, isolate) || V8Uint16Array::hasInstance(value, isolate) || V8Uint32Array::hasInstance(value, isolate)) {
 175         v8SetReturnValue(info, v8AtomicString(isolate, "array"));
 176         return;
 177     }
 178     if (V8Float32Array::hasInstance(value, isolate) || V8Float64Array::hasInstance(value, isolate)) {
 179         v8SetReturnValue(info, v8AtomicString(isolate, "array"));
 180         return;
 181     }
 182     if (V8Uint8ClampedArray::hasInstance(value, isolate)) {
 183         v8SetReturnValue(info, v8AtomicString(isolate, "array"));
 184         return;
 185     }
 186 }
 187
 188 static bool setFunctionName(v8::Handle<v8::Object>& result, const v8::Handle<v8::Value>& value, v8::Isolate* isolate)
 189 {
 190     if (value->IsString() && v8::Handle<v8::String>::Cast(value)->Length()) {
 191         result->Set(v8AtomicString(isolate, "functionName"), value);
 192         return true;
 193     }
 194     return false;
 195 }
 196
 197 void V8InjectedScriptHost::functionDetailsMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 198 {
 199     if (info.Length() < 1)
 200         return;
 201
 202     v8::Isolate* isolate = info.GetIsolate();
 203
 204     v8::Handle<v8::Value> value = info[0];
 205     if (!value->IsFunction())
 206         return;
 207     v8::Handle<v8::Function> function = v8::Handle<v8::Function>::Cast(value);
 208     int lineNumber = function->GetScriptLineNumber();
 209     int columnNumber = function->GetScriptColumnNumber();
 210
 211     v8::Local<v8::Object> location = v8::Object::New(isolate);
 212     location->Set(v8AtomicString(isolate, "lineNumber"), v8::Integer::New(isolate, lineNumber));
 213     location->Set(v8AtomicString(isolate, "columnNumber"), v8::Integer::New(isolate, columnNumber));
 214     location->Set(v8AtomicString(isolate, "scriptId"), v8::Integer::New(isolate, function->ScriptId())->ToString());
 215
 216     v8::Local<v8::Object> result = v8::Object::New(isolate);
 217     result->Set(v8AtomicString(isolate, "location"), location);
 218
 219     if (!setFunctionName(result, function->GetDisplayName(), isolate)
 220         && !setFunctionName(result, function->GetName(), isolate)
 221         && !setFunctionName(result, function->GetInferredName(), isolate))
 222         result->Set(v8AtomicString(isolate, "functionName"), v8AtomicString(isolate, ""));
 223
 224     InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
 225     ScriptDebugServer& debugServer = host->scriptDebugServer();
 226     v8::Handle<v8::Value> scopes = debugServer.functionScopes(function);
 227     if (!scopes.IsEmpty() && scopes->IsArray())
 228         result->Set(v8AtomicString(isolate, "rawScopes"), scopes);
 229
 230     v8SetReturnValue(info, result);
 231 }
 232
 233 void V8InjectedScriptHost::getInternalPropertiesMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 234 {
 235     if (info.Length() < 1)
 236         return;
 237
 238     v8::Handle<v8::Object> object = v8::Handle<v8::Object>::Cast(info[0]);
 239
 240     InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
 241     ScriptDebugServer& debugServer = host->scriptDebugServer();
 242     v8SetReturnValue(info, debugServer.getInternalProperties(object));
 243 }
 244
 245 static v8::Handle<v8::Array> getJSListenerFunctions(ExecutionContext* executionContext, const EventListenerInfo& listenerInfo, v8::Isolate* isolate)
 246 {
 247     v8::Local<v8::Array> result = v8::Array::New(isolate);
 248     size_t handlersCount = listenerInfo.eventListenerVector.size();
 249     for (size_t i = 0, outputIndex = 0; i < handlersCount; ++i) {
 250         RefPtr<EventListener> listener = listenerInfo.eventListenerVector[i].listener;
 251         if (listener->type() != EventListener::JSEventListenerType) {
 252             ASSERT_NOT_REACHED();
 253             continue;
 254         }
 255         V8AbstractEventListener* v8Listener = static_cast<V8AbstractEventListener*>(listener.get());
 256         v8::Local<v8::Context> context = toV8Context(executionContext, v8Listener->world());
 257         // Hide listeners from other contexts.
 258         if (context != isolate->GetCurrentContext())
 259             continue;
 260         v8::Local<v8::Object> function;
 261         {
 262             // getListenerObject() may cause JS in the event attribute to get compiled, potentially unsuccessfully.
 263             v8::TryCatch block;
 264             function = v8Listener->getListenerObject(executionContext);
 265             if (block.HasCaught())
 266                 continue;
 267         }
 268         ASSERT(!function.IsEmpty());
 269         v8::Local<v8::Object> listenerEntry = v8::Object::New(isolate);
 270         listenerEntry->Set(v8AtomicString(isolate, "listener"), function);
 271         listenerEntry->Set(v8AtomicString(isolate, "useCapture"), v8::Boolean::New(isolate, listenerInfo.eventListenerVector[i].useCapture));
 272         result->Set(v8::Number::New(isolate, outputIndex++), listenerEntry);
 273     }
 274     return result;
 275 }
 276
 277 void V8InjectedScriptHost::getEventListenersMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 278 {
 279     if (info.Length() < 1)
 280         return;
 281
 282     EventTarget* target = 0;
 283     v8::Local<v8::Value> value = info[0];
 284
 285     if (V8EventTarget::hasInstance(value, info.GetIsolate()))
 286         target = V8EventTarget::toNative(value->ToObject());
 287
 288     // We need to handle a DOMWindow specially, because a DOMWindow wrapper exists on a prototype chain.
 289     if (!target)
 290         target = toDOMWindow(value, info.GetIsolate());
 291
 292     if (!target || !target->executionContext())
 293         return;
 294
 295     InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
 296     Vector<EventListenerInfo> listenersArray;
 297     host->getEventListenersImpl(target, listenersArray);
 298
 299     v8::Local<v8::Object> result = v8::Object::New(info.GetIsolate());
 300     for (size_t i = 0; i < listenersArray.size(); ++i) {
 301         v8::Handle<v8::Array> listeners = getJSListenerFunctions(target->executionContext(), listenersArray[i], info.GetIsolate());
 302         if (!listeners->Length())
 303             continue;
 304         AtomicString eventType = listenersArray[i].eventType;
 305         result->Set(v8String(info.GetIsolate(), eventType), listeners);
 306     }
 307
 308     v8SetReturnValue(info, result);
 309 }
 310
 311 void V8InjectedScriptHost::inspectMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 312 {
 313     if (info.Length() < 2)
 314         return;
 315
 316     InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
 317     ScriptValue object(info[0], info.GetIsolate());
 318     ScriptValue hints(info[1], info.GetIsolate());
 319     host->inspectImpl(object.toJSONValue(ScriptState::current()), hints.toJSONValue(ScriptState::current()));
 320 }
 321
 322 void V8InjectedScriptHost::evaluateMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 323 {
 324     v8::Isolate* isolate = info.GetIsolate();
 325     if (info.Length() < 1) {
 326         isolate->ThrowException(v8::Exception::Error(v8::String::NewFromUtf8(isolate, "One argument expected.")));
 327         return;
 328     }
 329
 330     v8::Handle<v8::String> expression = info[0]->ToString();
 331     if (expression.IsEmpty()) {
 332         isolate->ThrowException(v8::Exception::Error(v8::String::NewFromUtf8(isolate, "The argument must be a string.")));
 333         return;
 334     }
 335
 336     ASSERT(!isolate->GetCurrentContext().IsEmpty());
 337     v8::TryCatch tryCatch;
 338     v8::Handle<v8::Value> result = V8ScriptRunner::compileAndRunInternalScript(expression, info.GetIsolate());
 339     if (tryCatch.HasCaught()) {
 340         v8SetReturnValue(info, tryCatch.ReThrow());
 341         return;
 342     }
 343     v8SetReturnValue(info, result);
 344 }
 345
 346 void V8InjectedScriptHost::setFunctionVariableValueMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 347 {
 348     v8::Handle<v8::Value> functionValue = info[0];
 349     int scopeIndex = info[1]->Int32Value();
 350     String variableName = toCoreStringWithUndefinedOrNullCheck(info[2]);
 351     v8::Handle<v8::Value> newValue = info[3];
 352
 353     InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
 354     ScriptDebugServer& debugServer = host->scriptDebugServer();
 355     v8SetReturnValue(info, debugServer.setFunctionVariableValue(functionValue, scopeIndex, variableName, newValue));
 356 }
 357
 358 static bool getFunctionLocation(const v8::FunctionCallbackInfo<v8::Value>& info, String* scriptId, int* lineNumber, int* columnNumber)
 359 {
 360     if (info.Length() < 1)
 361         return false;
 362     v8::Handle<v8::Value> fn = info[0];
 363     if (!fn->IsFunction())
 364         return false;
 365     v8::Handle<v8::Function> function = v8::Handle<v8::Function>::Cast(fn);
 366     *lineNumber = function->GetScriptLineNumber();
 367     *columnNumber = function->GetScriptColumnNumber();
 368     if (*lineNumber == v8::Function::kLineOffsetNotFound || *columnNumber == v8::Function::kLineOffsetNotFound)
 369         return false;
 370     *scriptId = String::number(function->ScriptId());
 371     return true;
 372 }
 373
 374 void V8InjectedScriptHost::debugFunctionMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 375 {
 376     String scriptId;
 377     int lineNumber;
 378     int columnNumber;
 379     if (!getFunctionLocation(info, &scriptId, &lineNumber, &columnNumber))
 380         return;
 381
 382     InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
 383     host->debugFunction(scriptId, lineNumber, columnNumber);
 384 }
 385
 386 void V8InjectedScriptHost::undebugFunctionMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 387 {
 388     String scriptId;
 389     int lineNumber;
 390     int columnNumber;
 391     if (!getFunctionLocation(info, &scriptId, &lineNumber, &columnNumber))
 392         return;
 393
 394     InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
 395     host->undebugFunction(scriptId, lineNumber, columnNumber);
 396 }
 397
 398 void V8InjectedScriptHost::monitorFunctionMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 399 {
 400     String scriptId;
 401     int lineNumber;
 402     int columnNumber;
 403     if (!getFunctionLocation(info, &scriptId, &lineNumber, &columnNumber))
 404         return;
 405
 406     v8::Handle<v8::Value> name;
 407     if (info.Length() > 0 && info[0]->IsFunction()) {
 408         v8::Handle<v8::Function> function = v8::Handle<v8::Function>::Cast(info[0]);
 409         name = function->GetName();
 410         if (!name->IsString() || !v8::Handle<v8::String>::Cast(name)->Length())
 411             name = function->GetInferredName();
 412     }
 413
 414     InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
 415     host->monitorFunction(scriptId, lineNumber, columnNumber, toCoreStringWithUndefinedOrNullCheck(name));
 416 }
 417
 418 void V8InjectedScriptHost::unmonitorFunctionMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 419 {
 420     String scriptId;
 421     int lineNumber;
 422     int columnNumber;
 423     if (!getFunctionLocation(info, &scriptId, &lineNumber, &columnNumber))
 424         return;
 425
 426     InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
 427     host->unmonitorFunction(scriptId, lineNumber, columnNumber);
 428 }
 429
 430 } // namespace WebCore