| /* |
| * Copyright (C) 2008 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
| * its contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "JSHistoryCustom.h" |
| |
| #include "Frame.h" |
| #include "History.h" |
| #include <runtime/JSFunction.h> |
| |
| using namespace JSC; |
| |
| namespace WebCore { |
| |
| static JSValue nonCachingStaticBackFunctionGetter(ExecState* exec, JSValue, const Identifier& propertyName) |
| { |
| return new (exec) JSFunction(exec, exec->lexicalGlobalObject(), exec->lexicalGlobalObject()->functionStructure(), 0, propertyName, jsHistoryPrototypeFunctionBack); |
| } |
| |
| static JSValue nonCachingStaticForwardFunctionGetter(ExecState* exec, JSValue, const Identifier& propertyName) |
| { |
| return new (exec) JSFunction(exec, exec->lexicalGlobalObject(), exec->lexicalGlobalObject()->functionStructure(), 0, propertyName, jsHistoryPrototypeFunctionForward); |
| } |
| |
| static JSValue nonCachingStaticGoFunctionGetter(ExecState* exec, JSValue, const Identifier& propertyName) |
| { |
| return new (exec) JSFunction(exec, exec->lexicalGlobalObject(), exec->lexicalGlobalObject()->functionStructure(), 1, propertyName, jsHistoryPrototypeFunctionGo); |
| } |
| |
| bool JSHistory::getOwnPropertySlotDelegate(ExecState* exec, const Identifier& propertyName, PropertySlot& slot) |
| { |
| // When accessing History cross-domain, functions are always the native built-in ones. |
| // See JSDOMWindow::getOwnPropertySlotDelegate for additional details. |
| |
| // Our custom code is only needed to implement the Window cross-domain scheme, so if access is |
| // allowed, return false so the normal lookup will take place. |
| String message; |
| if (allowsAccessFromFrame(exec, impl()->frame(), message)) |
| return false; |
| |
| // Check for the few functions that we allow, even when called cross-domain. |
| const HashEntry* entry = JSHistoryPrototype::s_info.propHashTable(exec)->entry(exec, propertyName); |
| if (entry) { |
| // Allow access to back(), forward() and go() from any frame. |
| if (entry->attributes() & Function) { |
| if (entry->function() == jsHistoryPrototypeFunctionBack) { |
| slot.setCustom(this, nonCachingStaticBackFunctionGetter); |
| return true; |
| } else if (entry->function() == jsHistoryPrototypeFunctionForward) { |
| slot.setCustom(this, nonCachingStaticForwardFunctionGetter); |
| return true; |
| } else if (entry->function() == jsHistoryPrototypeFunctionGo) { |
| slot.setCustom(this, nonCachingStaticGoFunctionGetter); |
| return true; |
| } |
| } |
| } else { |
| // Allow access to toString() cross-domain, but always Object.toString. |
| if (propertyName == exec->propertyNames().toString) { |
| slot.setCustom(this, objectToStringFunctionGetter); |
| return true; |
| } |
| } |
| |
| printErrorMessageForFrame(impl()->frame(), message); |
| slot.setUndefined(); |
| return true; |
| } |
| |
| bool JSHistory::getOwnPropertyDescriptorDelegate(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor) |
| { |
| if (!impl()->frame()) { |
| descriptor.setUndefined(); |
| return true; |
| } |
| |
| // Throw out all cross domain access |
| if (!allowsAccessFromFrame(exec, impl()->frame())) |
| return true; |
| |
| // Check for the few functions that we allow, even when called cross-domain. |
| const HashEntry* entry = JSHistoryPrototype::s_info.propHashTable(exec)->entry(exec, propertyName); |
| if (entry) { |
| PropertySlot slot; |
| // Allow access to back(), forward() and go() from any frame. |
| if (entry->attributes() & Function) { |
| if (entry->function() == jsHistoryPrototypeFunctionBack) { |
| slot.setCustom(this, nonCachingStaticBackFunctionGetter); |
| descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes()); |
| return true; |
| } else if (entry->function() == jsHistoryPrototypeFunctionForward) { |
| slot.setCustom(this, nonCachingStaticForwardFunctionGetter); |
| descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes()); |
| return true; |
| } else if (entry->function() == jsHistoryPrototypeFunctionGo) { |
| slot.setCustom(this, nonCachingStaticGoFunctionGetter); |
| descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes()); |
| return true; |
| } |
| } |
| } else { |
| // Allow access to toString() cross-domain, but always Object.toString. |
| if (propertyName == exec->propertyNames().toString) { |
| PropertySlot slot; |
| slot.setCustom(this, objectToStringFunctionGetter); |
| descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes()); |
| return true; |
| } |
| } |
| |
| descriptor.setUndefined(); |
| return true; |
| } |
| |
| bool JSHistory::putDelegate(ExecState* exec, const Identifier&, JSValue, PutPropertySlot&) |
| { |
| // Only allow putting by frames in the same origin. |
| if (!allowsAccessFromFrame(exec, impl()->frame())) |
| return true; |
| return false; |
| } |
| |
| bool JSHistory::deleteProperty(ExecState* exec, const Identifier& propertyName) |
| { |
| // Only allow deleting by frames in the same origin. |
| if (!allowsAccessFromFrame(exec, impl()->frame())) |
| return false; |
| return Base::deleteProperty(exec, propertyName); |
| } |
| |
| void JSHistory::getOwnPropertyNames(ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode) |
| { |
| // Only allow the history object to enumerated by frames in the same origin. |
| if (!allowsAccessFromFrame(exec, impl()->frame())) |
| return; |
| Base::getOwnPropertyNames(exec, propertyNames, mode); |
| } |
| |
| JSValue JSHistory::pushState(ExecState* exec) |
| { |
| RefPtr<SerializedScriptValue> historyState = SerializedScriptValue::create(exec, exec->argument(0)); |
| if (exec->hadException()) |
| return jsUndefined(); |
| |
| String title = valueToStringWithUndefinedOrNullCheck(exec, exec->argument(1)); |
| if (exec->hadException()) |
| return jsUndefined(); |
| |
| String url; |
| if (exec->argumentCount() > 2) { |
| url = valueToStringWithUndefinedOrNullCheck(exec, exec->argument(2)); |
| if (exec->hadException()) |
| return jsUndefined(); |
| } |
| |
| ExceptionCode ec = 0; |
| impl()->stateObjectAdded(historyState.release(), title, url, History::StateObjectPush, ec); |
| setDOMException(exec, ec); |
| |
| return jsUndefined(); |
| } |
| |
| JSValue JSHistory::replaceState(ExecState* exec) |
| { |
| RefPtr<SerializedScriptValue> historyState = SerializedScriptValue::create(exec, exec->argument(0)); |
| if (exec->hadException()) |
| return jsUndefined(); |
| |
| String title = valueToStringWithUndefinedOrNullCheck(exec, exec->argument(1)); |
| if (exec->hadException()) |
| return jsUndefined(); |
| |
| String url; |
| if (exec->argumentCount() > 2) { |
| url = valueToStringWithUndefinedOrNullCheck(exec, exec->argument(2)); |
| if (exec->hadException()) |
| return jsUndefined(); |
| } |
| |
| ExceptionCode ec = 0; |
| impl()->stateObjectAdded(historyState.release(), title, url, History::StateObjectReplace, ec); |
| setDOMException(exec, ec); |
| |
| return jsUndefined(); |
| } |
| |
| } // namespace WebCore |