1/*
2 * Copyright (C) 2014 Apple 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
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "WebUserContentController.h"
28
29#include "DataReference.h"
30#include "WebFrame.h"
31#include "WebPage.h"
32#include "WebProcess.h"
33#include "WebUserContentControllerMessages.h"
34#include "WebUserContentControllerProxyMessages.h"
35#include <WebCore/DOMWrapperWorld.h>
36#include <WebCore/ScriptController.h>
37#include <WebCore/SerializedScriptValue.h>
38#include <WebCore/UserStyleSheet.h>
39#include <wtf/NeverDestroyed.h>
40
41#if ENABLE(USER_MESSAGE_HANDLERS)
42#include <WebCore/UserMessageHandler.h>
43#include <WebCore/UserMessageHandlerDescriptor.h>
44#endif
45
46using namespace WebCore;
47
48namespace WebKit {
49
50static HashMap<uint64_t, WebUserContentController*>& userContentControllers()
51{
52    static NeverDestroyed<HashMap<uint64_t, WebUserContentController*>> userContentControllers;
53
54    return userContentControllers;
55}
56
57PassRefPtr<WebUserContentController> WebUserContentController::getOrCreate(uint64_t identifier)
58{
59    auto& userContentControllerPtr = userContentControllers().add(identifier, nullptr).iterator->value;
60    if (userContentControllerPtr)
61        return userContentControllerPtr;
62
63    RefPtr<WebUserContentController> userContentController = adoptRef(new WebUserContentController(identifier));
64    userContentControllerPtr = userContentController.get();
65
66    return userContentController.release();
67}
68
69WebUserContentController::WebUserContentController(uint64_t identifier)
70    : m_identifier(identifier)
71    , m_userContentController(*UserContentController::create())
72{
73    WebProcess::shared().addMessageReceiver(Messages::WebUserContentController::messageReceiverName(), m_identifier, *this);
74}
75
76WebUserContentController::~WebUserContentController()
77{
78    ASSERT(userContentControllers().contains(m_identifier));
79
80    WebProcess::shared().removeMessageReceiver(Messages::WebUserContentController::messageReceiverName(), m_identifier);
81
82    userContentControllers().remove(m_identifier);
83}
84
85void WebUserContentController::addUserScripts(const Vector<WebCore::UserScript>& userScripts)
86{
87    for (const auto& userScript : userScripts)
88        m_userContentController->addUserScript(mainThreadNormalWorld(), std::make_unique<WebCore::UserScript>(userScript));
89}
90
91void WebUserContentController::removeAllUserScripts()
92{
93    m_userContentController->removeUserScripts(mainThreadNormalWorld());
94}
95
96void WebUserContentController::addUserStyleSheets(const Vector<WebCore::UserStyleSheet>& userStyleSheets)
97{
98    for (const auto& userStyleSheet : userStyleSheets) {
99        m_userContentController->addUserStyleSheet(mainThreadNormalWorld(),
100            std::make_unique<WebCore::UserStyleSheet>(userStyleSheet), InjectInExistingDocuments);
101    }
102}
103
104void WebUserContentController::removeAllUserStyleSheets()
105{
106    m_userContentController->removeUserStyleSheets(mainThreadNormalWorld());
107}
108
109#if ENABLE(USER_MESSAGE_HANDLERS)
110class WebUserMessageHandlerDescriptorProxy : public RefCounted<WebUserMessageHandlerDescriptorProxy>, public WebCore::UserMessageHandlerDescriptor::Client {
111public:
112    static PassRefPtr<WebUserMessageHandlerDescriptorProxy> create(WebUserContentController* controller, const String& name, uint64_t identifier)
113    {
114        return adoptRef(new WebUserMessageHandlerDescriptorProxy(controller, name, identifier));
115    }
116
117    virtual ~WebUserMessageHandlerDescriptorProxy()
118    {
119    }
120
121    // WebCore::UserMessageHandlerDescriptor::Client
122    virtual void didPostMessage(WebCore::UserMessageHandler& handler, WebCore::SerializedScriptValue* value)
123    {
124        WebCore::Frame* frame = handler.frame();
125        if (!frame)
126            return;
127
128        WebFrame* webFrame = WebFrame::fromCoreFrame(*frame);
129        if (!webFrame)
130            return;
131
132        WebPage* webPage = webFrame->page();
133        if (!webPage)
134            return;
135
136        WebProcess::shared().parentProcessConnection()->send(Messages::WebUserContentControllerProxy::DidPostMessage(webPage->pageID(), webFrame->frameID(), m_identifier, IPC::DataReference(value->data())), m_controller->identifier());
137    }
138
139    WebCore::UserMessageHandlerDescriptor& descriptor() { return *m_descriptor; }
140    uint64_t identifier() { return m_identifier; }
141
142private:
143    WebUserMessageHandlerDescriptorProxy(WebUserContentController* controller, const String& name, uint64_t identifier)
144        : m_controller(controller)
145        , m_descriptor(UserMessageHandlerDescriptor::create(name, mainThreadNormalWorld(), *this))
146        , m_identifier(identifier)
147    {
148    }
149
150    RefPtr<WebUserContentController> m_controller;
151    RefPtr<WebCore::UserMessageHandlerDescriptor> m_descriptor;
152    uint64_t m_identifier;
153};
154#endif
155
156void WebUserContentController::addUserScriptMessageHandlers(const Vector<WebScriptMessageHandlerHandle>& scriptMessageHandlers)
157{
158#if ENABLE(USER_MESSAGE_HANDLERS)
159    for (auto& handle : scriptMessageHandlers) {
160        RefPtr<WebUserMessageHandlerDescriptorProxy> descriptor = WebUserMessageHandlerDescriptorProxy::create(this, handle.name, handle.identifier);
161
162        m_userMessageHandlerDescriptors.add(descriptor->identifier(), descriptor);
163        m_userContentController->addUserMessageHandlerDescriptor(descriptor->descriptor());
164    }
165#else
166    UNUSED_PARAM(scriptMessageHandlers);
167#endif
168}
169
170void WebUserContentController::removeUserScriptMessageHandler(uint64_t identifier)
171{
172#if ENABLE(USER_MESSAGE_HANDLERS)
173    auto it = m_userMessageHandlerDescriptors.find(identifier);
174    ASSERT(it != m_userMessageHandlerDescriptors.end());
175
176    m_userContentController->removeUserMessageHandlerDescriptor(it->value->descriptor());
177    m_userMessageHandlerDescriptors.remove(it);
178#else
179    UNUSED_PARAM(identifier);
180#endif
181}
182
183} // namespace WebKit
184