1/* 2 Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de) 3 Copyright (C) 2001 Dirk Mueller (mueller@kde.org) 4 Copyright (C) 2002 Waldo Bastian (bastian@kde.org) 5 Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com) 6 Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. 7 8 This library is free software; you can redistribute it and/or 9 modify it under the terms of the GNU Library General Public 10 License as published by the Free Software Foundation; either 11 version 2 of the License, or (at your option) any later version. 12 13 This library is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 Library General Public License for more details. 17 18 You should have received a copy of the GNU Library General Public License 19 along with this library; see the file COPYING.LIB. If not, write to 20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 21 Boston, MA 02110-1301, USA. 22 23 This class provides all functionality needed for loading images, style sheets and html 24 pages from the web. It has a memory cache for these objects. 25*/ 26 27#include "config.h" 28#include "core/fetch/ScriptResource.h" 29 30#include "core/fetch/ResourceClientWalker.h" 31#include "platform/MIMETypeRegistry.h" 32#include "platform/SharedBuffer.h" 33#include "platform/network/HTTPParsers.h" 34 35namespace blink { 36 37ScriptResource::ScriptResource(const ResourceRequest& resourceRequest, const String& charset) 38 : TextResource(resourceRequest, Script, "application/javascript", charset) 39{ 40 DEFINE_STATIC_LOCAL(const AtomicString, acceptScript, ("*/*", AtomicString::ConstructFromLiteral)); 41 42 // It's javascript we want. 43 // But some websites think their scripts are <some wrong mimetype here> 44 // and refuse to serve them if we only accept application/x-javascript. 45 setAccept(acceptScript); 46} 47 48ScriptResource::~ScriptResource() 49{ 50} 51 52void ScriptResource::didAddClient(ResourceClient* client) 53{ 54 ASSERT(client->resourceClientType() == ScriptResourceClient::expectedType()); 55 Resource::didAddClient(client); 56} 57 58void ScriptResource::appendData(const char* data, int length) 59{ 60 Resource::appendData(data, length); 61 ResourceClientWalker<ScriptResourceClient> walker(m_clients); 62 while (ScriptResourceClient* client = walker.next()) 63 client->notifyAppendData(this); 64} 65 66AtomicString ScriptResource::mimeType() const 67{ 68 return extractMIMETypeFromMediaType(m_response.httpHeaderField("Content-Type")).lower(); 69} 70 71const String& ScriptResource::script() 72{ 73 ASSERT(!isPurgeable()); 74 ASSERT(isLoaded()); 75 76 if (!m_script && m_data) { 77 String script = decodedText(); 78 m_data.clear(); 79 // We lie a it here and claim that script counts as encoded data (even though it's really decoded data). 80 // That's because the MemoryCache thinks that it can clear out decoded data by calling destroyDecodedData(), 81 // but we can't destroy script in destroyDecodedData because that's our only copy of the data! 82 setEncodedSize(script.sizeInBytes()); 83 m_script = AtomicString(script); 84 } 85 86 return m_script.string(); 87} 88 89bool ScriptResource::mimeTypeAllowedByNosniff() const 90{ 91 return parseContentTypeOptionsHeader(m_response.httpHeaderField("X-Content-Type-Options")) != ContentTypeOptionsNosniff || MIMETypeRegistry::isSupportedJavaScriptMIMEType(mimeType()); 92} 93 94} // namespace blink 95