| /* |
| * Copyright (C) 2015 Apple 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: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "MockContentFilter.h" |
| |
| #if ENABLE(CONTENT_FILTERING) |
| |
| #include "ContentFilter.h" |
| #include "ContentFilterUnblockHandler.h" |
| #include "Logging.h" |
| #include "ResourceRequest.h" |
| #include "ResourceResponse.h" |
| #include "SharedBuffer.h" |
| #include <mutex> |
| #include <wtf/text/CString.h> |
| |
| namespace WebCore { |
| |
| using Decision = MockContentFilterSettings::Decision; |
| using DecisionPoint = MockContentFilterSettings::DecisionPoint; |
| |
| void MockContentFilter::ensureInstalled() |
| { |
| static std::once_flag onceFlag; |
| std::call_once(onceFlag, []{ |
| ContentFilter::addType<MockContentFilter>(); |
| }); |
| } |
| |
| static inline MockContentFilterSettings& settings() |
| { |
| return MockContentFilterSettings::singleton(); |
| } |
| |
| bool MockContentFilter::enabled() |
| { |
| bool enabled = settings().enabled(); |
| LOG(ContentFiltering, "MockContentFilter is %s.\n", enabled ? "enabled" : "not enabled"); |
| return enabled; |
| } |
| |
| std::unique_ptr<MockContentFilter> MockContentFilter::create() |
| { |
| return makeUnique<MockContentFilter>(); |
| } |
| |
| void MockContentFilter::willSendRequest(ResourceRequest& request, const ResourceResponse& redirectResponse) |
| { |
| if (!enabled()) { |
| m_state = State::Allowed; |
| return; |
| } |
| |
| if (redirectResponse.isNull()) |
| maybeDetermineStatus(DecisionPoint::AfterWillSendRequest); |
| else |
| maybeDetermineStatus(DecisionPoint::AfterRedirect); |
| |
| if (m_state == State::Filtering) |
| return; |
| |
| String modifiedRequestURLString { settings().modifiedRequestURL() }; |
| if (modifiedRequestURLString.isEmpty()) |
| return; |
| |
| URL modifiedRequestURL { request.url(), modifiedRequestURLString }; |
| if (!modifiedRequestURL.isValid()) { |
| LOG(ContentFiltering, "MockContentFilter failed to convert %s to a URL.\n", modifiedRequestURL.string().ascii().data()); |
| return; |
| } |
| |
| request.setURL(modifiedRequestURL); |
| } |
| |
| void MockContentFilter::responseReceived(const ResourceResponse&) |
| { |
| maybeDetermineStatus(DecisionPoint::AfterResponse); |
| } |
| |
| void MockContentFilter::addData(const char*, int) |
| { |
| maybeDetermineStatus(DecisionPoint::AfterAddData); |
| } |
| |
| void MockContentFilter::finishedAddingData() |
| { |
| maybeDetermineStatus(DecisionPoint::AfterFinishedAddingData); |
| } |
| |
| Ref<SharedBuffer> MockContentFilter::replacementData() const |
| { |
| ASSERT(didBlockData()); |
| return SharedBuffer::create(m_replacementData.data(), m_replacementData.size()); |
| } |
| |
| ContentFilterUnblockHandler MockContentFilter::unblockHandler() const |
| { |
| ASSERT(didBlockData()); |
| using DecisionHandlerFunction = ContentFilterUnblockHandler::DecisionHandlerFunction; |
| |
| return ContentFilterUnblockHandler { |
| MockContentFilterSettings::unblockURLHost(), [](DecisionHandlerFunction decisionHandler) { |
| bool shouldAllow { settings().unblockRequestDecision() == Decision::Allow }; |
| if (shouldAllow) |
| settings().setDecision(Decision::Allow); |
| LOG(ContentFiltering, "MockContentFilter %s the unblock request.\n", shouldAllow ? "allowed" : "did not allow"); |
| decisionHandler(shouldAllow); |
| } |
| }; |
| } |
| |
| String MockContentFilter::unblockRequestDeniedScript() const |
| { |
| return "unblockRequestDenied()"_s; |
| } |
| |
| void MockContentFilter::maybeDetermineStatus(DecisionPoint decisionPoint) |
| { |
| if (m_state != State::Filtering || decisionPoint != settings().decisionPoint()) |
| return; |
| |
| LOG(ContentFiltering, "MockContentFilter stopped buffering with state %u at decision point %u.\n", m_state, decisionPoint); |
| |
| m_state = settings().decision() == Decision::Allow ? State::Allowed : State::Blocked; |
| if (m_state != State::Blocked) |
| return; |
| |
| m_replacementData.clear(); |
| const CString utf8BlockedString = settings().blockedString().utf8(); |
| m_replacementData.append(utf8BlockedString.data(), utf8BlockedString.length()); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(CONTENT_FILTERING) |