146 lines
4.8 KiB
C++
146 lines
4.8 KiB
C++
/*
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* Copyright (C) 2013 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "LegacyMockCDM.h"
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#if ENABLE(LEGACY_ENCRYPTED_MEDIA)
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#include "LegacyCDM.h"
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#include "LegacyCDMSession.h"
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#include "WebKitMediaKeyError.h"
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#include <JavaScriptCore/JSCInlines.h>
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#include <JavaScriptCore/TypedArrayInlines.h>
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#include <JavaScriptCore/Uint8Array.h>
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namespace WebCore {
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class MockCDMSession : public LegacyCDMSession {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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MockCDMSession(LegacyCDMSessionClient*);
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virtual ~MockCDMSession() = default;
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void setClient(LegacyCDMSessionClient* client) override { m_client = client; }
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const String& sessionId() const override { return m_sessionId; }
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RefPtr<Uint8Array> generateKeyRequest(const String& mimeType, Uint8Array* initData, String& destinationURL, unsigned short& errorCode, uint32_t& systemCode) override;
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void releaseKeys() override;
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bool update(Uint8Array*, RefPtr<Uint8Array>& nextMessage, unsigned short& errorCode, uint32_t& systemCode) override;
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protected:
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LegacyCDMSessionClient* m_client;
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String m_sessionId;
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};
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bool LegacyMockCDM::supportsKeySystem(const String& keySystem)
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{
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return equalLettersIgnoringASCIICase(keySystem, "com.webcore.mock");
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}
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bool LegacyMockCDM::supportsKeySystemAndMimeType(const String& keySystem, const String& mimeType)
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{
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if (!supportsKeySystem(keySystem))
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return false;
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return equalLettersIgnoringASCIICase(mimeType, "video/mock");
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}
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bool LegacyMockCDM::supportsMIMEType(const String& mimeType)
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{
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return equalLettersIgnoringASCIICase(mimeType, "video/mock");
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}
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std::unique_ptr<LegacyCDMSession> LegacyMockCDM::createSession(LegacyCDMSessionClient* client)
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{
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return makeUnique<MockCDMSession>(client);
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}
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static Uint8Array* initDataPrefix()
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{
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const unsigned char prefixData[] = { 'm', 'o', 'c', 'k' };
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static Uint8Array& prefix { Uint8Array::create(prefixData, WTF_ARRAY_LENGTH(prefixData)).leakRef() };
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return &prefix;
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}
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static Uint8Array* keyPrefix()
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{
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static const unsigned char prefixData[] = {'k', 'e', 'y'};
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static Uint8Array& prefix { Uint8Array::create(prefixData, WTF_ARRAY_LENGTH(prefixData)).leakRef() };
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return &prefix;
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}
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static Uint8Array* keyRequest()
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{
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static const unsigned char requestData[] = {'r', 'e', 'q', 'u', 'e', 's', 't'};
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static Uint8Array& request { Uint8Array::create(requestData, WTF_ARRAY_LENGTH(requestData)).leakRef() };
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return &request;
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}
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static String generateSessionId()
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{
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static int monotonicallyIncreasingSessionId = 0;
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return String::number(monotonicallyIncreasingSessionId++);
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}
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MockCDMSession::MockCDMSession(LegacyCDMSessionClient* client)
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: m_client(client)
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, m_sessionId(generateSessionId())
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{
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}
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RefPtr<Uint8Array> MockCDMSession::generateKeyRequest(const String&, Uint8Array* initData, String&, unsigned short& errorCode, uint32_t&)
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{
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for (unsigned i = 0; i < initDataPrefix()->length(); ++i) {
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if (!initData || i >= initData->length() || initData->item(i) != initDataPrefix()->item(i)) {
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errorCode = WebKitMediaKeyError::MEDIA_KEYERR_UNKNOWN;
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return nullptr;
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}
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}
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return keyRequest();
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}
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void MockCDMSession::releaseKeys()
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{
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// no-op
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}
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bool MockCDMSession::update(Uint8Array* key, RefPtr<Uint8Array>&, unsigned short& errorCode, uint32_t&)
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{
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for (unsigned i = 0; i < keyPrefix()->length(); ++i) {
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if (i >= key->length() || key->item(i) != keyPrefix()->item(i)) {
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errorCode = WebKitMediaKeyError::MEDIA_KEYERR_CLIENT;
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return false;
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}
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}
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return true;
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}
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}
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#endif // ENABLE(LEGACY_ENCRYPTED_MEDIA)
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