1 /* 2 * Copyright (C) 2009 Google Inc. All rights reserved. 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 #ifndef ThreadableLoader_h 32 #define ThreadableLoader_h 33 34 #include "core/fetch/ResourceLoaderOptions.h" 35 #include "wtf/Noncopyable.h" 36 #include "wtf/PassRefPtr.h" 37 #include "wtf/RefCounted.h" 38 #include "wtf/RefPtr.h" 39 40 namespace WebCore { 41 42 class ResourceError; 43 class ResourceRequest; 44 class ResourceResponse; 45 class ExecutionContext; 46 class ThreadableLoaderClient; 47 48 enum CrossOriginRequestPolicy { 49 DenyCrossOriginRequests, 50 UseAccessControl, 51 AllowCrossOriginRequests 52 }; 53 54 enum PreflightPolicy { 55 ConsiderPreflight, 56 ForcePreflight, 57 PreventPreflight 58 }; 59 60 enum ContentSecurityPolicyEnforcement { 61 EnforceConnectSrcDirective, 62 DoNotEnforceContentSecurityPolicy, 63 }; 64 65 struct ThreadableLoaderOptions { ThreadableLoaderOptionsThreadableLoaderOptions66 ThreadableLoaderOptions() 67 : preflightPolicy(ConsiderPreflight) 68 , crossOriginRequestPolicy(DenyCrossOriginRequests) 69 , contentSecurityPolicyEnforcement(EnforceConnectSrcDirective) 70 , timeoutMilliseconds(0) { } 71 72 PreflightPolicy preflightPolicy; // If AccessControl is used, how to determine if a preflight is needed. 73 CrossOriginRequestPolicy crossOriginRequestPolicy; 74 AtomicString initiator; 75 ContentSecurityPolicyEnforcement contentSecurityPolicyEnforcement; 76 unsigned long timeoutMilliseconds; 77 }; 78 79 // Useful for doing loader operations from any thread (not threadsafe, 80 // just able to run on threads other than the main thread). 81 class ThreadableLoader : public RefCounted<ThreadableLoader> { 82 WTF_MAKE_NONCOPYABLE(ThreadableLoader); 83 public: 84 // ThreadableLoaderOptions argument configures this ThreadableLoader's 85 // behavior. 86 // 87 // ResourceLoaderOptions argument will be passed to the FetchRequest 88 // that this ThreadableLoader creates. It can be altered e.g. when 89 // redirect happens. 90 static void loadResourceSynchronously(ExecutionContext&, const ResourceRequest&, ThreadableLoaderClient&, const ThreadableLoaderOptions&, const ResourceLoaderOptions&); 91 static PassRefPtr<ThreadableLoader> create(ExecutionContext&, ThreadableLoaderClient*, const ResourceRequest&, const ThreadableLoaderOptions&, const ResourceLoaderOptions&); 92 93 virtual void cancel() = 0; 94 ~ThreadableLoader()95 virtual ~ThreadableLoader() { } 96 97 protected: ThreadableLoader()98 ThreadableLoader() { } 99 }; 100 101 } // namespace WebCore 102 103 #endif // ThreadableLoader_h 104