/****************************************************************************
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** Copyright (C) 2016 The Qt Company Ltd.
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** This file is part of the QtWebEngine module of the Qt Toolkit.
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** ensure the GNU Lesser General Public License version 3 requirements
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
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#include "browser_message_filter_qt.h"

#include "chrome/browser/profiles/profile.h"
#include "common/qt_messages.h"
#include "content/public/browser/plugin_service.h"
#include "net/url_request/url_request_context.h"
#include "net/url_request/url_request_context_getter.h"
#include "type_conversion.h"

#include "net/network_delegate_qt.h"

namespace QtWebEngineCore {

BrowserMessageFilterQt::BrowserMessageFilterQt(int /*render_process_id*/, Profile *profile)
    : BrowserMessageFilter(QtMsgStart)
    , m_profile(profile)
{
}

// The following is based on chrome/browser/plugins/plugin_info_message_filter.cc:
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE.Chromium file.

bool BrowserMessageFilterQt::OnMessageReceived(const IPC::Message& message)
{
    IPC_BEGIN_MESSAGE_MAP(BrowserMessageFilterQt, message)
        IPC_MESSAGE_HANDLER(QtWebEngineHostMsg_AllowDatabase, OnAllowDatabase)
        IPC_MESSAGE_HANDLER(QtWebEngineHostMsg_AllowDOMStorage, OnAllowDOMStorage)
        IPC_MESSAGE_HANDLER_DELAY_REPLY(QtWebEngineHostMsg_RequestFileSystemAccessSync,
                                        OnRequestFileSystemAccessSync)
        IPC_MESSAGE_HANDLER(QtWebEngineHostMsg_RequestFileSystemAccessAsync,
                            OnRequestFileSystemAccessAsync)
        IPC_MESSAGE_HANDLER(QtWebEngineHostMsg_AllowIndexedDB, OnAllowIndexedDB)
#if BUILDFLAG(ENABLE_LIBRARY_CDMS)
        IPC_MESSAGE_HANDLER(
            QtWebEngineHostMsg_IsInternalPluginAvailableForMimeType,
            OnIsInternalPluginAvailableForMimeType)
#endif
        IPC_MESSAGE_UNHANDLED(return false)
    IPC_END_MESSAGE_MAP()
    return true;
}

#if BUILDFLAG(ENABLE_LIBRARY_CDMS)
void BrowserMessageFilterQt::OnIsInternalPluginAvailableForMimeType(
    const std::string& mime_type,
    base::Optional<std::vector<content::WebPluginMimeType::Param>> *opt_additional_params)
{
    std::vector<content::WebPluginInfo> plugins;
    content::PluginService::GetInstance()->GetInternalPlugins(&plugins);

    for (size_t i = 0; i < plugins.size(); ++i) {
        const content::WebPluginInfo& plugin = plugins[i];
        const std::vector<content::WebPluginMimeType>& mime_types = plugin.mime_types;
        for (size_t j = 0; j < mime_types.size(); ++j) {
            if (mime_types[j].mime_type == mime_type) {
                *opt_additional_params = base::make_optional(mime_types[j].additional_params);
                return;
            }
        }
    }
}

#endif // BUILDFLAG(ENABLE_LIBRARY_CDMS)


void BrowserMessageFilterQt::OnAllowDatabase(int /*render_frame_id*/,
                                             const GURL &origin_url,
                                             const GURL &top_origin_url,
                                             const base::string16 &/*name*/,
                                             const base::string16 &/*display_name*/,
                                             bool* allowed)
{
    NetworkDelegateQt *networkDelegate = static_cast<NetworkDelegateQt *>(m_profile->GetRequestContext()->GetURLRequestContext()->network_delegate());
    *allowed = networkDelegate->canGetCookies(top_origin_url, origin_url);
}

void BrowserMessageFilterQt::OnAllowDOMStorage(int /*render_frame_id*/,
                                               const GURL &origin_url,
                                               const GURL &top_origin_url,
                                               bool /*local*/,
                                               bool *allowed)
{
    NetworkDelegateQt *networkDelegate = static_cast<NetworkDelegateQt *>(m_profile->GetRequestContext()->GetURLRequestContext()->network_delegate());
    *allowed = networkDelegate->canGetCookies(top_origin_url, origin_url);
}

void BrowserMessageFilterQt::OnAllowIndexedDB(int /*render_frame_id*/,
                                              const GURL &origin_url,
                                              const GURL &top_origin_url,
                                              const base::string16 &/*name*/,
                                              bool *allowed)
{
    NetworkDelegateQt *networkDelegate = static_cast<NetworkDelegateQt *>(m_profile->GetRequestContext()->GetURLRequestContext()->network_delegate());
    *allowed = networkDelegate->canGetCookies(top_origin_url, origin_url);
}

void BrowserMessageFilterQt::OnRequestFileSystemAccessSync(int render_frame_id,
                                                           const GURL& origin_url,
                                                           const GURL& top_origin_url,
                                                           IPC::Message* reply_msg)
{
    DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
    base::Callback<void(bool)> callback = base::Bind(
            &BrowserMessageFilterQt::OnRequestFileSystemAccessSyncResponse,
            base::WrapRefCounted(this), reply_msg);
    OnRequestFileSystemAccess(render_frame_id,
                              origin_url,
                              top_origin_url,
                              callback);
}

void BrowserMessageFilterQt::OnRequestFileSystemAccessSyncResponse(IPC::Message *reply_msg, bool allowed)
{
    QtWebEngineHostMsg_RequestFileSystemAccessSync::WriteReplyParams(reply_msg, allowed);
    Send(reply_msg);
}

void BrowserMessageFilterQt::OnRequestFileSystemAccessAsync(int render_frame_id,
                                                            int request_id,
                                                            const GURL& origin_url,
                                                            const GURL& top_origin_url)
{
    DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
    base::Callback<void(bool)> callback = base::Bind(
            &BrowserMessageFilterQt::OnRequestFileSystemAccessAsyncResponse,
            base::WrapRefCounted(this), render_frame_id, request_id);
    OnRequestFileSystemAccess(render_frame_id,
                              origin_url,
                              top_origin_url,
                              callback);
}

void BrowserMessageFilterQt::OnRequestFileSystemAccessAsyncResponse(int render_frame_id,
                                                                    int request_id,
                                                                    bool allowed)
{
    Send(new QtWebEngineMsg_RequestFileSystemAccessAsyncResponse(render_frame_id, request_id, allowed));
}

void BrowserMessageFilterQt::OnRequestFileSystemAccess(int /*render_frame_id*/,
                                                       const GURL &origin_url,
                                                       const GURL &top_origin_url,
                                                       base::Callback<void(bool)> callback)
{
    DCHECK_CURRENTLY_ON(content::BrowserThread::IO);

    NetworkDelegateQt *networkDelegate = static_cast<NetworkDelegateQt *>(m_profile->GetRequestContext()->GetURLRequestContext()->network_delegate());
    bool allowed = networkDelegate->canGetCookies(top_origin_url, origin_url);

    callback.Run(allowed);
}

} // namespace QtWebEngineCore
