Delete the old WebSocket implementation.

Source/modules/websockets/WebSocketDeflateFramer.cpp

-/*
- * Copyright (C) 2012 Google 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:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * 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.
- *     * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
- * OWNER OR 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 "modules/websockets/WebSocketDeflateFramer.h"
-
-#include "wtf/HashMap.h"
-#include "wtf/text/StringHash.h"
-#include "wtf/text/WTFString.h"
-
-namespace blink {
-
-class WebSocketExtensionDeflateFrame final : public WebSocketExtensionProcessor {
-    WTF_MAKE_FAST_ALLOCATED;
-public:
-    static PassOwnPtr<WebSocketExtensionDeflateFrame> create(WebSocketDeflateFramer* framer)
-    {
-        return adoptPtr(new WebSocketExtensionDeflateFrame(framer));
-    }
-    virtual ~WebSocketExtensionDeflateFrame() { }
-
-    virtual String handshakeString() override;
-    virtual bool processResponse(const HashMap<String, String>&) override;
-    virtual String failureReason() override { return m_failureReason; }
-
-private:
-    WebSocketExtensionDeflateFrame(WebSocketDeflateFramer*);
-
-    WebSocketDeflateFramer* m_framer;
-    bool m_responseProcessed;
-    String m_failureReason;
-};
-
-// FXIME: Remove vendor prefix after the specification matured.
-WebSocketExtensionDeflateFrame::WebSocketExtensionDeflateFrame(WebSocketDeflateFramer* framer)
-    : WebSocketExtensionProcessor("x-webkit-deflate-frame")
-    , m_framer(framer)
-    , m_responseProcessed(false)
-{
-    ASSERT(m_framer);
-}
-
-String WebSocketExtensionDeflateFrame::handshakeString()
-{
-    return extensionToken(); // No parameter
-}
-
-bool WebSocketExtensionDeflateFrame::processResponse(const HashMap<String, String>& serverParameters)
-{
-    if (m_responseProcessed) {
-        m_failureReason = "Received duplicate deflate-frame response";
-        return false;
-    }
-    m_responseProcessed = true;
-
-    unsigned expectedNumParameters = 0;
-    int windowBits = 15;
-    HashMap<String, String>::const_iterator parameter = serverParameters.find("max_window_bits");
-    if (parameter != serverParameters.end()) {
-        windowBits = parameter->value.toInt();
-        if (windowBits < 8 || windowBits > 15) {
-            m_failureReason = "Received invalid max_window_bits parameter";
-            return false;
-        }
-        expectedNumParameters++;
-    }
-
-    WebSocketDeflater::ContextTakeOverMode mode = WebSocketDeflater::TakeOverContext;
-    parameter = serverParameters.find("no_context_takeover");
-    if (parameter != serverParameters.end()) {
-        if (!parameter->value.isNull()) {
-            m_failureReason = "Received invalid no_context_takeover parameter";
-            return false;
-        }
-        mode = WebSocketDeflater::DoNotTakeOverContext;
-        expectedNumParameters++;
-    }
-
-    if (expectedNumParameters != serverParameters.size()) {
-        m_failureReason = "Received unexpected deflate-frame parameter";
-        return false;
-    }
-
-    m_framer->enableDeflate(windowBits, mode);
-    return true;
-}
-
-DeflateResultHolder::DeflateResultHolder(WebSocketDeflateFramer* framer)
-    : m_framer(framer)
-    , m_succeeded(true)
-{
-    ASSERT(m_framer);
-}
-
-DeflateResultHolder::~DeflateResultHolder()
-{
-    m_framer->resetDeflateContext();
-}
-
-void DeflateResultHolder::fail(const String& failureReason)
-{
-    m_succeeded = false;
-    m_failureReason = failureReason;
-}
-
-InflateResultHolder::InflateResultHolder(WebSocketDeflateFramer* framer)
-    : m_framer(framer)
-    , m_succeeded(true)
-{
-    ASSERT(m_framer);
-}
-
-InflateResultHolder::~InflateResultHolder()
-{
-    m_framer->resetInflateContext();
-}
-
-void InflateResultHolder::fail(const String& failureReason)
-{
-    m_succeeded = false;
-    m_failureReason = failureReason;
-}
-
-WebSocketDeflateFramer::WebSocketDeflateFramer()
-    : m_enabled(false)
-{
-}
-
-PassOwnPtr<WebSocketExtensionProcessor> WebSocketDeflateFramer::createExtensionProcessor()
-{
-    return WebSocketExtensionDeflateFrame::create(this);
-}
-
-void WebSocketDeflateFramer::enableDeflate(int windowBits, WebSocketDeflater::ContextTakeOverMode mode)
-{
-    m_deflater = WebSocketDeflater::create(windowBits, mode);
-    m_inflater = WebSocketInflater::create();
-    if (!m_deflater->initialize() || !m_inflater->initialize()) {
-        m_deflater.clear();
-        m_inflater.clear();
-        return;
-    }
-    m_enabled = true;
-}
-
-PassOwnPtr<DeflateResultHolder> WebSocketDeflateFramer::deflate(WebSocketFrame& frame)
-{
-    OwnPtr<DeflateResultHolder> result = DeflateResultHolder::create(this);
-    if (!enabled() || !WebSocketFrame::isNonControlOpCode(frame.opCode) || !frame.payloadLength)
-        return result.release();
-    if (!m_deflater->addBytes(frame.payload, frame.payloadLength) || !m_deflater->finish()) {
-        result->fail("Failed to compress frame");
-        return result.release();
-    }
-    frame.compress = true;
-    frame.payload = m_deflater->data();
-    frame.payloadLength = m_deflater->size();
-    return result.release();
-}
-
-void WebSocketDeflateFramer::resetDeflateContext()
-{
-    if (m_deflater)
-        m_deflater->reset();
-}
-
-PassOwnPtr<InflateResultHolder> WebSocketDeflateFramer::inflate(WebSocketFrame& frame)
-{
-    OwnPtr<InflateResultHolder> result = InflateResultHolder::create(this);
-    if (!enabled())
-        return result.release();
-    if (!frame.compress)
-        return result.release();
-    if (!WebSocketFrame::isNonControlOpCode(frame.opCode)) {
-        result->fail("Received unexpected compressed frame");
-        return result.release();
-    }
-    if (!m_inflater->addBytes(frame.payload, frame.payloadLength) || !m_inflater->finish()) {
-        result->fail("Failed to decompress frame");
-        return result.release();
-    }
-    frame.compress = false;
-    frame.payload = m_inflater->data();
-    frame.payloadLength = m_inflater->size();
-    return result.release();
-}
-
-void WebSocketDeflateFramer::resetInflateContext()
-{
-    if (m_inflater)
-        m_inflater->reset();
-}
-
-void WebSocketDeflateFramer::didFail()
-{
-    resetDeflateContext();
-    resetInflateContext();
-}
-
-} // namespace blink