1 /* 2 * Copyright (C) 2013 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 CryptoResultImpl_h 32 #define CryptoResultImpl_h 33 34 #include "bindings/core/v8/ScriptPromise.h" 35 #include "core/dom/ExceptionCode.h" 36 #include "platform/CryptoResult.h" 37 #include "public/platform/WebCrypto.h" 38 #include "wtf/Forward.h" 39 #include "wtf/WeakPtr.h" 40 41 namespace blink { 42 43 class ScriptPromiseResolver; 44 ExceptionCode webCryptoErrorToExceptionCode(WebCryptoErrorType); 45 46 // Wrapper around a Promise to notify completion of the crypto operation. 47 // 48 // The thread on which CryptoResultImpl was created on is referred to as the 49 // "origin thread". 50 // 51 // * At creation time there must be an active ExecutionContext. 52 // * The CryptoResult interface must only be called from the origin thread. 53 // * ref(), deref(), cancelled() and cancel() can be called from any thread. 54 // * One of the completeWith***() functions must be called, or the 55 // m_resolver will be leaked until the ExecutionContext is destroyed. 56 class CryptoResultImpl FINAL : public CryptoResult { 57 public: 58 ~CryptoResultImpl(); 59 60 static PassRefPtr<CryptoResultImpl> create(ScriptState*); 61 62 virtual void completeWithError(WebCryptoErrorType, const WebString&) OVERRIDE; 63 virtual void completeWithBuffer(const WebArrayBuffer&) OVERRIDE; 64 virtual void completeWithJson(const char* utf8Data, unsigned length) OVERRIDE; 65 virtual void completeWithBoolean(bool) OVERRIDE; 66 virtual void completeWithKey(const WebCryptoKey&) OVERRIDE; 67 virtual void completeWithKeyPair(const WebCryptoKey& publicKey, const WebCryptoKey& privateKey) OVERRIDE; 68 virtual bool cancelled() const OVERRIDE; 69 70 // If called after completion (including cancellation) will return an empty 71 // ScriptPromise. 72 ScriptPromise promise(); 73 74 private: 75 class WeakResolver; 76 explicit CryptoResultImpl(ScriptState*); 77 78 void cancel(); 79 80 WeakPtr<ScriptPromiseResolver> m_resolver; 81 volatile int m_cancelled; 82 }; 83 84 } // namespace blink 85 86 #endif 87
