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// Copyright 2015 The Chromium Embedded Framework Authors.
// Portions copyright 2014 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 file.
#include "libcef/browser/resource_dispatcher_host_delegate.h"
#include <stdint.h>
#include <utility>
#include "libcef/browser/browser_host_impl.h"
#include "libcef/browser/origin_whitelist_impl.h"
#include "libcef/browser/resource_context.h"
#include "libcef/browser/thread_util.h"
#include "libcef/common/extensions/extensions_util.h"
#include "base/guid.h"
#include "base/memory/scoped_vector.h"
#include "build/build_config.h"
#include "chrome/browser/extensions/api/streams_private/streams_private_api.h"
#include "content/public/browser/plugin_service.h"
#include "content/public/browser/plugin_service_filter.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/resource_request_info.h"
#include "content/public/browser/stream_info.h"
#include "content/public/common/resource_response.h"
#include "content/public/common/webplugininfo.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension.h"
#include "extensions/common/manifest_handlers/mime_types_handler.h"
#include "net/http/http_response_headers.h"
#include "net/url_request/url_request.h"
namespace {
void SendExecuteMimeTypeHandlerEvent(
std::unique_ptr<content::StreamInfo> stream,
int64_t expected_content_size,
const std::string& extension_id,
const std::string& view_id,
bool embedded,
int frame_tree_node_id,
int render_process_id,
int render_frame_id) {
CEF_REQUIRE_UIT();
content::WebContents* web_contents = nullptr;
if (frame_tree_node_id != -1) {
web_contents =
content::WebContents::FromFrameTreeNodeId(frame_tree_node_id);
} else {
web_contents = content::WebContents::FromRenderFrameHost(
content::RenderFrameHost::FromID(render_process_id, render_frame_id));
}
CefRefPtr<CefBrowserHostImpl> browser =
CefBrowserHostImpl::GetBrowserForContents(web_contents);
if (!browser.get())
return;
content::BrowserContext* browser_context = web_contents->GetBrowserContext();
extensions::StreamsPrivateAPI* streams_private =
extensions::StreamsPrivateAPI::Get(browser_context);
if (!streams_private)
return;
streams_private->ExecuteMimeTypeHandler(
extension_id, std::move(stream), view_id, expected_content_size, embedded,
frame_tree_node_id, render_process_id, render_frame_id);
}
} // namespace
CefResourceDispatcherHostDelegate::CefResourceDispatcherHostDelegate() {
}
CefResourceDispatcherHostDelegate::~CefResourceDispatcherHostDelegate() {
}
bool CefResourceDispatcherHostDelegate::HandleExternalProtocol(
const GURL& url,
content::ResourceRequestInfo* info) {
CEF_POST_TASK(CEF_UIT,
base::Bind(base::IgnoreResult(&CefResourceDispatcherHostDelegate::
HandleExternalProtocolOnUIThread),
base::Unretained(this), url,
info->GetWebContentsGetterForRequest()));
return false;
}
// Implementation based on
// ChromeResourceDispatcherHostDelegate::ShouldInterceptResourceAsStream.
bool CefResourceDispatcherHostDelegate::ShouldInterceptResourceAsStream(
net::URLRequest* request,
const base::FilePath& plugin_path,
const std::string& mime_type,
GURL* origin,
std::string* payload) {
if (!extensions::ExtensionsEnabled())
return false;
const content::ResourceRequestInfo* info =
content::ResourceRequestInfo::ForRequest(request);
CefResourceContext* context =
static_cast<CefResourceContext*>(info->GetContext());
bool profile_is_off_the_record = context->IsOffTheRecord();
const scoped_refptr<const extensions::InfoMap> extension_info_map(
context->GetExtensionInfoMap());
std::vector<std::string> whitelist = MimeTypesHandler::GetMIMETypeWhitelist();
// Go through the white-listed extensions and try to use them to intercept
// the URL request.
for (const std::string& extension_id : whitelist) {
const extensions::Extension* extension =
extension_info_map->extensions().GetByID(extension_id);
// The white-listed extension may not be installed, so we have to NULL check
// |extension|.
if (!extension ||
(profile_is_off_the_record &&
!extension_info_map->IsIncognitoEnabled(extension_id))) {
continue;
}
MimeTypesHandler* handler = MimeTypesHandler::GetHandler(extension);
if (!handler)
continue;
// If a plugin path is provided then a stream is being intercepted for the
// mimeHandlerPrivate API. Otherwise a stream is being intercepted for the
// streamsPrivate API.
if (!plugin_path.empty()) {
if (handler->HasPlugin() && plugin_path == handler->GetPluginPath()) {
StreamTargetInfo target_info;
*origin =
extensions::Extension::GetBaseURLFromExtensionId(extension_id);
target_info.extension_id = extension_id;
target_info.view_id = base::GenerateGUID();
*payload = target_info.view_id;
stream_target_info_[request] = target_info;
return true;
}
} else {
if (!handler->HasPlugin() && handler->CanHandleMIMEType(mime_type)) {
StreamTargetInfo target_info;
*origin =
extensions::Extension::GetBaseURLFromExtensionId(extension_id);
target_info.extension_id = extension_id;
stream_target_info_[request] = target_info;
return true;
}
}
}
return false;
}
// Implementation based on
// ChromeResourceDispatcherHostDelegate::OnStreamCreated.
void CefResourceDispatcherHostDelegate::OnStreamCreated(
net::URLRequest* request,
std::unique_ptr<content::StreamInfo> stream) {
DCHECK(extensions::ExtensionsEnabled());
const content::ResourceRequestInfo* info =
content::ResourceRequestInfo::ForRequest(request);
std::map<net::URLRequest*, StreamTargetInfo>::iterator ix =
stream_target_info_.find(request);
CHECK(ix != stream_target_info_.end());
bool embedded = info->GetResourceType() != content::RESOURCE_TYPE_MAIN_FRAME;
CEF_POST_TASK(CEF_UIT,
base::Bind(&SendExecuteMimeTypeHandlerEvent, base::Passed(&stream),
request->GetExpectedContentSize(), ix->second.extension_id,
ix->second.view_id, embedded, info->GetFrameTreeNodeId(),
info->GetChildID(), info->GetRenderFrameID()));
stream_target_info_.erase(request);
}
void CefResourceDispatcherHostDelegate::OnRequestRedirected(
const GURL& redirect_url,
net::URLRequest* request,
content::ResourceContext* resource_context,
content::ResourceResponse* response) {
const GURL& active_url = request->url();
if (active_url.is_valid() && redirect_url.is_valid() &&
active_url.GetOrigin() != redirect_url.GetOrigin() &&
HasCrossOriginWhitelistEntry(active_url, redirect_url)) {
if (!response->head.headers.get())
response->head.headers = new net::HttpResponseHeaders(std::string());
// Add CORS headers to support XMLHttpRequest redirects.
response->head.headers->AddHeader("Access-Control-Allow-Origin: " +
active_url.scheme() + "://" + active_url.host());
response->head.headers->AddHeader("Access-Control-Allow-Credentials: true");
}
}
std::unique_ptr<net::ClientCertStore>
CefResourceDispatcherHostDelegate::CreateClientCertStore(
content::ResourceContext* resource_context) {
return static_cast<CefResourceContext*>(resource_context)->
CreateClientCertStore();
}
void CefResourceDispatcherHostDelegate::HandleExternalProtocolOnUIThread(
const GURL& url,
const content::ResourceRequestInfo::WebContentsGetter&
web_contents_getter) {
CEF_REQUIRE_UIT();
content::WebContents* web_contents = web_contents_getter.Run();
if (web_contents) {
CefRefPtr<CefBrowserHostImpl> browser =
CefBrowserHostImpl::GetBrowserForContents(web_contents);
if (browser.get())
browser->HandleExternalProtocol(url);
}
}