| // 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 file. |
| |
| #include "extensions/browser/api/messaging/message_service.h" |
| |
| #include <stdint.h> |
| #include <limits> |
| #include <utility> |
| |
| #include "base/bind.h" |
| #include "base/callback.h" |
| #include "base/json/json_writer.h" |
| #include "base/lazy_instance.h" |
| #include "base/macros.h" |
| #include "base/metrics/histogram_macros.h" |
| #include "base/values.h" |
| #include "build/build_config.h" |
| #include "content/public/browser/browser_context.h" |
| #include "content/public/browser/browser_thread.h" |
| #include "content/public/browser/render_frame_host.h" |
| #include "content/public/browser/render_process_host.h" |
| #include "content/public/browser/render_view_host.h" |
| #include "content/public/browser/render_widget_host.h" |
| #include "content/public/browser/render_widget_host_view.h" |
| #include "content/public/browser/site_instance.h" |
| #include "content/public/browser/web_contents.h" |
| #include "content/public/common/child_process_host.h" |
| #include "extensions/browser/api/extensions_api_client.h" |
| #include "extensions/browser/api/messaging/extension_message_port.h" |
| #include "extensions/browser/api/messaging/message_port.h" |
| #include "extensions/browser/api/messaging/messaging_delegate.h" |
| #include "extensions/browser/event_router.h" |
| #include "extensions/browser/extension_api_frame_id_map.h" |
| #include "extensions/browser/extension_registry.h" |
| #include "extensions/browser/extension_system.h" |
| #include "extensions/browser/extension_util.h" |
| #include "extensions/browser/extension_web_contents_observer.h" |
| #include "extensions/browser/extensions_browser_client.h" |
| #include "extensions/browser/guest_view/web_view/web_view_guest.h" |
| #include "extensions/browser/process_manager.h" |
| #include "extensions/common/extension.h" |
| #include "extensions/common/manifest_constants.h" |
| #include "extensions/common/manifest_handlers/background_info.h" |
| #include "extensions/common/manifest_handlers/externally_connectable.h" |
| #include "extensions/common/manifest_handlers/incognito_info.h" |
| #include "extensions/common/permissions/permissions_data.h" |
| #include "url/gurl.h" |
| |
| using content::BrowserContext; |
| using content::BrowserThread; |
| using content::SiteInstance; |
| using content::WebContents; |
| |
| namespace extensions { |
| |
| namespace { |
| |
| const char kReceivingEndDoesntExistError[] = |
| "Could not establish connection. Receiving end does not exist."; |
| #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_LINUX) |
| const char kMissingPermissionError[] = |
| "Access to native messaging requires nativeMessaging permission."; |
| const char kProhibitedByPoliciesError[] = |
| "Access to the native messaging host was disabled by the system " |
| "administrator."; |
| #endif |
| |
| } // namespace |
| |
| struct MessageService::MessageChannel { |
| std::unique_ptr<MessagePort> opener; |
| std::unique_ptr<MessagePort> receiver; |
| }; |
| |
| struct MessageService::OpenChannelParams { |
| int source_process_id; |
| int source_routing_id; |
| std::unique_ptr<base::DictionaryValue> source_tab; |
| int source_frame_id; |
| std::unique_ptr<MessagePort> receiver; |
| PortId receiver_port_id; |
| std::string source_extension_id; |
| std::string target_extension_id; |
| GURL source_url; |
| std::string channel_name; |
| bool include_guest_process_info; |
| |
| // Takes ownership of receiver. |
| OpenChannelParams(int source_process_id, |
| int source_routing_id, |
| std::unique_ptr<base::DictionaryValue> source_tab, |
| int source_frame_id, |
| MessagePort* receiver, |
| const PortId& receiver_port_id, |
| const std::string& source_extension_id, |
| const std::string& target_extension_id, |
| const GURL& source_url, |
| const std::string& channel_name, |
| bool include_guest_process_info) |
| : source_process_id(source_process_id), |
| source_routing_id(source_routing_id), |
| source_frame_id(source_frame_id), |
| receiver(receiver), |
| receiver_port_id(receiver_port_id), |
| source_extension_id(source_extension_id), |
| target_extension_id(target_extension_id), |
| source_url(source_url), |
| channel_name(channel_name), |
| include_guest_process_info(include_guest_process_info) { |
| if (source_tab) |
| this->source_tab = std::move(source_tab); |
| } |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(OpenChannelParams); |
| }; |
| |
| namespace { |
| |
| static content::RenderProcessHost* GetExtensionProcess( |
| BrowserContext* context, |
| const std::string& extension_id) { |
| scoped_refptr<SiteInstance> site_instance = |
| ProcessManager::Get(context)->GetSiteInstanceForURL( |
| Extension::GetBaseURLFromExtensionId(extension_id)); |
| return site_instance->HasProcess() ? site_instance->GetProcess() : NULL; |
| } |
| |
| } // namespace |
| |
| MessageService::MessageService(BrowserContext* context) |
| : messaging_delegate_(ExtensionsAPIClient::Get()->GetMessagingDelegate()), |
| weak_factory_(this) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| DCHECK_NE(nullptr, messaging_delegate_); |
| } |
| |
| MessageService::~MessageService() { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| |
| channels_.clear(); |
| } |
| |
| static base::LazyInstance< |
| BrowserContextKeyedAPIFactory<MessageService>>::DestructorAtExit g_factory = |
| LAZY_INSTANCE_INITIALIZER; |
| |
| // static |
| BrowserContextKeyedAPIFactory<MessageService>* |
| MessageService::GetFactoryInstance() { |
| return g_factory.Pointer(); |
| } |
| |
| // static |
| MessageService* MessageService::Get(BrowserContext* context) { |
| return BrowserContextKeyedAPIFactory<MessageService>::Get(context); |
| } |
| |
| void MessageService::OpenChannelToExtension( |
| int source_process_id, |
| int source_routing_id, |
| const PortId& source_port_id, |
| const std::string& source_extension_id, |
| const std::string& target_extension_id, |
| const GURL& source_url, |
| const std::string& channel_name) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| DCHECK(source_port_id.is_opener); |
| |
| content::RenderFrameHost* source_render_frame_host = |
| content::RenderFrameHost::FromID(source_process_id, source_routing_id); |
| if (!source_render_frame_host) |
| return; |
| BrowserContext* context = |
| source_render_frame_host->GetProcess()->GetBrowserContext(); |
| |
| ExtensionRegistry* registry = ExtensionRegistry::Get(context); |
| const Extension* target_extension = |
| registry->enabled_extensions().GetByID(target_extension_id); |
| PortId receiver_port_id(source_port_id.context_id, source_port_id.port_number, |
| false); |
| if (!target_extension) { |
| DispatchOnDisconnect(source_render_frame_host, receiver_port_id, |
| kReceivingEndDoesntExistError); |
| return; |
| } |
| |
| bool is_web_connection = false; |
| |
| if (source_extension_id != target_extension_id) { |
| // It's an external connection. Check the externally_connectable manifest |
| // key if it's present. If it's not, we allow connection from any extension |
| // but not webpages. |
| ExternallyConnectableInfo* externally_connectable = |
| static_cast<ExternallyConnectableInfo*>( |
| target_extension->GetManifestData( |
| manifest_keys::kExternallyConnectable)); |
| bool is_externally_connectable = false; |
| |
| if (externally_connectable) { |
| if (source_extension_id.empty()) { |
| // No source extension ID so the source was a web page. Check that the |
| // URL matches. |
| is_web_connection = true; |
| is_externally_connectable = |
| externally_connectable->matches.MatchesURL(source_url); |
| } else { |
| // Source extension ID so the source was an extension. Check that the |
| // extension matches. |
| is_externally_connectable = |
| externally_connectable->IdCanConnect(source_extension_id); |
| } |
| } else { |
| // Default behaviour. Any extension, no webpages. |
| is_externally_connectable = !source_extension_id.empty(); |
| } |
| |
| if (!is_externally_connectable) { |
| // Important: use kReceivingEndDoesntExistError here so that we don't |
| // leak information about this extension to callers. This way it's |
| // indistinguishable from the extension just not existing. |
| DispatchOnDisconnect(source_render_frame_host, receiver_port_id, |
| kReceivingEndDoesntExistError); |
| return; |
| } |
| } |
| |
| DCHECK(source_render_frame_host); |
| WebContents* source_contents = |
| WebContents::FromRenderFrameHost(source_render_frame_host); |
| |
| int source_frame_id = -1; |
| bool include_guest_process_info = false; |
| |
| // Get information about the opener's tab, if applicable. |
| std::unique_ptr<base::DictionaryValue> source_tab = |
| messaging_delegate_->MaybeGetTabInfo(source_contents); |
| |
| if (source_tab.get()) { |
| DCHECK(source_render_frame_host); |
| source_frame_id = |
| ExtensionApiFrameIdMap::GetFrameId(source_render_frame_host); |
| } else { |
| // Check to see if it was a WebView making the request. |
| // Sending messages from WebViews to extensions breaks webview isolation, |
| // so only allow component extensions to receive messages from WebViews. |
| bool is_web_view = !!WebViewGuest::FromWebContents(source_contents); |
| if (is_web_view && |
| Manifest::IsComponentLocation(target_extension->location())) { |
| include_guest_process_info = true; |
| } |
| } |
| |
| std::unique_ptr<OpenChannelParams> params(new OpenChannelParams( |
| source_process_id, source_routing_id, std::move(source_tab), |
| source_frame_id, nullptr, receiver_port_id, source_extension_id, |
| target_extension_id, source_url, channel_name, |
| include_guest_process_info)); |
| |
| pending_incognito_channels_[params->receiver_port_id.GetChannelId()] = |
| PendingMessagesQueue(); |
| if (context->IsOffTheRecord() && |
| !util::IsIncognitoEnabled(target_extension_id, context)) { |
| // Give the user a chance to accept an incognito connection from the web if |
| // they haven't already, with the conditions: |
| // - Only for non-split mode incognito. We don't want the complication of |
| // spinning up an additional process here which might need to do some |
| // setup that we're not expecting. |
| // - Only for extensions that can't normally be enabled in incognito, since |
| // that surface (e.g. chrome://extensions) should be the only one for |
| // enabling in incognito. In practice this means platform apps only. |
| if (!is_web_connection || IncognitoInfo::IsSplitMode(target_extension) || |
| util::CanBeIncognitoEnabled(target_extension)) { |
| OnOpenChannelAllowed(std::move(params), false); |
| return; |
| } |
| |
| // If the target extension isn't even listening for connect/message events, |
| // there is no need to go any further and the connection should be |
| // rejected without showing a prompt. See http://crbug.com/442497 |
| EventRouter* event_router = EventRouter::Get(context); |
| const char* const events[] = {"runtime.onConnectExternal", |
| "runtime.onMessageExternal", |
| "extension.onRequestExternal", |
| nullptr}; |
| bool has_event_listener = false; |
| for (const char* const* event = events; *event; event++) { |
| has_event_listener |= |
| event_router->ExtensionHasEventListener(target_extension_id, *event); |
| } |
| if (!has_event_listener) { |
| OnOpenChannelAllowed(std::move(params), false); |
| return; |
| } |
| |
| // This check may show a dialog. |
| messaging_delegate_->QueryIncognitoConnectability( |
| context, target_extension, source_contents, source_url, |
| base::Bind(&MessageService::OnOpenChannelAllowed, |
| weak_factory_.GetWeakPtr(), base::Passed(¶ms))); |
| return; |
| } |
| |
| OnOpenChannelAllowed(std::move(params), true); |
| } |
| |
| void MessageService::OpenChannelToNativeApp( |
| int source_process_id, |
| int source_routing_id, |
| const PortId& source_port_id, |
| const std::string& native_app_name) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| DCHECK(source_port_id.is_opener); |
| |
| content::RenderFrameHost* source = |
| content::RenderFrameHost::FromID(source_process_id, source_routing_id); |
| if (!source) |
| return; |
| |
| #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_LINUX) |
| content::WebContents* web_contents = |
| content::WebContents::FromRenderFrameHost(source); |
| ExtensionWebContentsObserver* extension_web_contents_observer = |
| web_contents ? |
| ExtensionWebContentsObserver::GetForWebContents(web_contents) : |
| nullptr; |
| const Extension* extension = |
| extension_web_contents_observer ? |
| extension_web_contents_observer->GetExtensionFromFrame(source, true) : |
| nullptr; |
| |
| bool has_permission = extension && |
| extension->permissions_data()->HasAPIPermission( |
| APIPermission::kNativeMessaging); |
| |
| PortId receiver_port_id(source_port_id.context_id, source_port_id.port_number, |
| false); |
| if (!has_permission) { |
| DispatchOnDisconnect(source, receiver_port_id, kMissingPermissionError); |
| return; |
| } |
| |
| // Verify that the host is not blocked by policies. |
| MessagingDelegate::PolicyPermission policy_permission = |
| messaging_delegate_->IsNativeMessagingHostAllowed( |
| source->GetProcess()->GetBrowserContext(), native_app_name); |
| if (policy_permission == MessagingDelegate::PolicyPermission::DISALLOW) { |
| DispatchOnDisconnect(source, receiver_port_id, kProhibitedByPoliciesError); |
| return; |
| } |
| |
| std::unique_ptr<MessageChannel> channel = std::make_unique<MessageChannel>(); |
| channel->opener.reset( |
| new ExtensionMessagePort(weak_factory_.GetWeakPtr(), source_port_id, |
| extension->id(), source, false)); |
| if (!channel->opener->IsValidPort()) |
| return; |
| channel->opener->OpenPort(source_process_id, source_routing_id); |
| |
| std::string error = kReceivingEndDoesntExistError; |
| std::unique_ptr<MessagePort> receiver( |
| messaging_delegate_->CreateReceiverForNativeApp( |
| weak_factory_.GetWeakPtr(), source, extension->id(), receiver_port_id, |
| native_app_name, |
| policy_permission == MessagingDelegate::PolicyPermission::ALLOW_ALL, |
| &error)); |
| |
| if (!receiver.get()) { |
| // Abandon the channel. |
| DispatchOnDisconnect(source, receiver_port_id, error); |
| return; |
| } |
| |
| channel->receiver = std::move(receiver); |
| |
| // Keep the opener alive until the channel is closed. |
| channel->opener->IncrementLazyKeepaliveCount(); |
| |
| AddChannel(std::move(channel), receiver_port_id); |
| #else // !(defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_LINUX)) |
| const char kNativeMessagingNotSupportedError[] = |
| "Native Messaging is not supported on this platform."; |
| DispatchOnDisconnect( |
| source, receiver_port_id, kNativeMessagingNotSupportedError); |
| #endif // !(defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_LINUX)) |
| } |
| |
| void MessageService::OpenChannelToTab(int source_process_id, |
| int source_routing_id, |
| const PortId& source_port_id, |
| int tab_id, |
| int frame_id, |
| const std::string& extension_id, |
| const std::string& channel_name) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| DCHECK_GE(frame_id, -1); |
| DCHECK(source_port_id.is_opener); |
| |
| content::RenderFrameHost* source = |
| content::RenderFrameHost::FromID(source_process_id, source_routing_id); |
| if (!source) |
| return; |
| content::BrowserContext* browser_context = |
| source->GetProcess()->GetBrowserContext(); |
| |
| PortId receiver_port_id(source_port_id.context_id, source_port_id.port_number, |
| false); |
| content::WebContents* receiver_contents = |
| messaging_delegate_->GetWebContentsByTabId(browser_context, tab_id); |
| if (!receiver_contents || receiver_contents->GetController().NeedsReload()) { |
| // The tab isn't loaded yet. Don't attempt to connect. |
| DispatchOnDisconnect( |
| source, receiver_port_id, kReceivingEndDoesntExistError); |
| return; |
| } |
| |
| std::unique_ptr<MessagePort> receiver = |
| messaging_delegate_->CreateReceiverForTab(weak_factory_.GetWeakPtr(), |
| extension_id, receiver_port_id, |
| receiver_contents, frame_id); |
| if (!receiver.get()) { |
| DispatchOnDisconnect( |
| source, receiver_port_id, kReceivingEndDoesntExistError); |
| return; |
| } |
| |
| const Extension* extension = nullptr; |
| if (!extension_id.empty()) { |
| // Source extension == target extension so the extension must exist, or |
| // where did the IPC come from? |
| extension = ExtensionRegistry::Get(browser_context) |
| ->enabled_extensions() |
| .GetByID(extension_id); |
| DCHECK(extension); |
| } |
| |
| std::unique_ptr<OpenChannelParams> params(new OpenChannelParams( |
| source_process_id, source_routing_id, |
| std::unique_ptr<base::DictionaryValue>(), // Source tab doesn't make |
| // sense |
| // for opening to tabs. |
| -1, // If there is no tab, then there is no frame either. |
| receiver.release(), receiver_port_id, extension_id, extension_id, |
| GURL(), // Source URL doesn't make sense for opening to tabs. |
| channel_name, |
| false)); // Connections to tabs aren't webview guests. |
| OpenChannelImpl(receiver_contents->GetBrowserContext(), std::move(params), |
| extension, false /* did_enqueue */); |
| } |
| |
| void MessageService::OpenChannelImpl(BrowserContext* browser_context, |
| std::unique_ptr<OpenChannelParams> params, |
| const Extension* target_extension, |
| bool did_enqueue) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| DCHECK_EQ(target_extension != nullptr, !params->target_extension_id.empty()); |
| |
| content::RenderFrameHost* source = |
| content::RenderFrameHost::FromID(params->source_process_id, |
| params->source_routing_id); |
| if (!source) |
| return; // Closed while in flight. |
| |
| if (!params->receiver || !params->receiver->IsValidPort()) { |
| DispatchOnDisconnect(source, params->receiver_port_id, |
| kReceivingEndDoesntExistError); |
| return; |
| } |
| |
| std::unique_ptr<ExtensionMessagePort> opener(new ExtensionMessagePort( |
| weak_factory_.GetWeakPtr(), params->receiver_port_id.GetOppositePortId(), |
| params->source_extension_id, source, false)); |
| if (!opener->IsValidPort()) |
| return; |
| opener->OpenPort(params->source_process_id, params->source_routing_id); |
| opener->RevalidatePort(); |
| |
| params->receiver->RemoveCommonFrames(*opener); |
| if (!params->receiver->IsValidPort()) { |
| opener->DispatchOnDisconnect(kReceivingEndDoesntExistError); |
| return; |
| } |
| |
| std::unique_ptr<MessageChannel> channel_ptr = |
| std::make_unique<MessageChannel>(); |
| MessageChannel* channel = channel_ptr.get(); |
| channel->opener = std::move(opener); |
| channel->receiver = std::move(params->receiver); |
| AddChannel(std::move(channel_ptr), params->receiver_port_id); |
| |
| int guest_process_id = content::ChildProcessHost::kInvalidUniqueID; |
| int guest_render_frame_routing_id = MSG_ROUTING_NONE; |
| if (params->include_guest_process_info) { |
| guest_process_id = params->source_process_id; |
| guest_render_frame_routing_id = params->source_routing_id; |
| |
| DCHECK(WebViewGuest::FromWebContents( |
| WebContents::FromRenderFrameHost(source))); |
| } |
| |
| // Send the connect event to the receiver. Give it the opener's port ID (the |
| // opener has the opposite port ID). |
| channel->receiver->DispatchOnConnect( |
| params->channel_name, std::move(params->source_tab), |
| params->source_frame_id, guest_process_id, guest_render_frame_routing_id, |
| params->source_extension_id, params->target_extension_id, |
| params->source_url); |
| |
| // Report the event to the event router, if the target is an extension. |
| // |
| // First, determine what event this will be (runtime.onConnect vs |
| // runtime.onMessage etc), and what the event target is (view vs background |
| // page etc). |
| // |
| // Yes - even though this is opening a channel, they may actually be |
| // runtime.onRequest/onMessage events because those single-use events are |
| // built using the connect framework (see messaging.js). |
| // |
| // Likewise, if you're wondering about native messaging events, these are |
| // only initiated *by* the extension, so aren't really events, just the |
| // endpoint of a communication channel. |
| if (target_extension) { |
| events::HistogramValue histogram_value = events::UNKNOWN; |
| bool is_external = |
| params->source_extension_id != params->target_extension_id; |
| if (params->channel_name == "chrome.runtime.onRequest") { |
| histogram_value = is_external ? events::RUNTIME_ON_REQUEST_EXTERNAL |
| : events::RUNTIME_ON_REQUEST; |
| } else if (params->channel_name == "chrome.runtime.onMessage") { |
| histogram_value = is_external ? events::RUNTIME_ON_MESSAGE_EXTERNAL |
| : events::RUNTIME_ON_MESSAGE; |
| } else { |
| histogram_value = is_external ? events::RUNTIME_ON_CONNECT_EXTERNAL |
| : events::RUNTIME_ON_CONNECT; |
| } |
| EventRouter::Get(browser_context) |
| ->ReportEvent(histogram_value, target_extension, did_enqueue); |
| } |
| |
| // Keep both ends of the channel alive until the channel is closed. |
| channel->opener->IncrementLazyKeepaliveCount(); |
| channel->receiver->IncrementLazyKeepaliveCount(); |
| } |
| |
| void MessageService::AddChannel(std::unique_ptr<MessageChannel> channel, |
| const PortId& receiver_port_id) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| |
| ChannelId channel_id = receiver_port_id.GetChannelId(); |
| CHECK(channels_.find(channel_id) == channels_.end()); |
| channels_[channel_id] = std::move(channel); |
| pending_lazy_background_page_channels_.erase(channel_id); |
| } |
| |
| void MessageService::OpenPort(const PortId& port_id, |
| int process_id, |
| int routing_id) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| DCHECK(!port_id.is_opener); |
| |
| ChannelId channel_id = port_id.GetChannelId(); |
| auto it = channels_.find(channel_id); |
| if (it == channels_.end()) |
| return; |
| |
| it->second->receiver->OpenPort(process_id, routing_id); |
| } |
| |
| void MessageService::ClosePort(const PortId& port_id, |
| int process_id, |
| int routing_id, |
| bool force_close) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| ClosePortImpl(port_id, process_id, routing_id, force_close, std::string()); |
| } |
| |
| void MessageService::CloseChannel(const PortId& port_id, |
| const std::string& error_message) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| ClosePortImpl(port_id, content::ChildProcessHost::kInvalidUniqueID, |
| MSG_ROUTING_NONE, true, error_message); |
| } |
| |
| void MessageService::ClosePortImpl(const PortId& port_id, |
| int process_id, |
| int routing_id, |
| bool force_close, |
| const std::string& error_message) { |
| // Note: The channel might be gone already, if the other side closed first. |
| ChannelId channel_id = port_id.GetChannelId(); |
| auto it = channels_.find(channel_id); |
| if (it == channels_.end()) { |
| auto pending = pending_lazy_background_page_channels_.find(channel_id); |
| if (pending != pending_lazy_background_page_channels_.end()) { |
| const LazyContextId context_id(pending->second.browser_context(), |
| pending->second.extension_id()); |
| context_id.GetTaskQueue()->AddPendingTask( |
| context_id, |
| base::BindOnce(&MessageService::PendingLazyBackgroundPageClosePort, |
| weak_factory_.GetWeakPtr(), port_id, process_id, |
| routing_id, force_close, error_message)); |
| } |
| return; |
| } |
| |
| // The difference between closing a channel and port is that closing a port |
| // does not necessarily have to destroy the channel if there are multiple |
| // receivers, whereas closing a channel always forces all ports to be closed. |
| if (force_close) { |
| CloseChannelImpl(it, port_id, error_message, true); |
| } else if (port_id.is_opener) { |
| it->second->opener->ClosePort(process_id, routing_id); |
| } else { |
| it->second->receiver->ClosePort(process_id, routing_id); |
| } |
| } |
| |
| void MessageService::CloseChannelImpl(MessageChannelMap::iterator channel_iter, |
| const PortId& closing_port_id, |
| const std::string& error_message, |
| bool notify_other_port) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| |
| std::unique_ptr<MessageChannel> channel = std::move(channel_iter->second); |
| // Remove from map to make sure that it is impossible for CloseChannelImpl to |
| // run twice for the same channel. |
| channels_.erase(channel_iter); |
| |
| // Notify the other side. |
| if (notify_other_port) { |
| MessagePort* port = closing_port_id.is_opener ? channel->receiver.get() |
| : channel->opener.get(); |
| port->DispatchOnDisconnect(error_message); |
| } |
| |
| // Balance the IncrementLazyKeepaliveCount() in OpenChannelImpl. |
| channel->opener->DecrementLazyKeepaliveCount(); |
| channel->receiver->DecrementLazyKeepaliveCount(); |
| } |
| |
| void MessageService::PostMessage(const PortId& source_port_id, |
| const Message& message) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| |
| ChannelId channel_id = source_port_id.GetChannelId(); |
| auto iter = channels_.find(channel_id); |
| if (iter == channels_.end()) { |
| // If this channel is pending, queue up the PostMessage to run once |
| // the channel opens. |
| EnqueuePendingMessage(source_port_id, channel_id, message); |
| return; |
| } |
| |
| DispatchMessage(source_port_id, iter->second.get(), message); |
| } |
| |
| void MessageService::EnqueuePendingMessage(const PortId& source_port_id, |
| const ChannelId& channel_id, |
| const Message& message) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| |
| auto pending_for_incognito = pending_incognito_channels_.find(channel_id); |
| if (pending_for_incognito != pending_incognito_channels_.end()) { |
| pending_for_incognito->second.push_back( |
| PendingMessage(source_port_id, message)); |
| // A channel should only be holding pending messages because it is in one |
| // of these states. |
| DCHECK( |
| !base::ContainsKey(pending_lazy_background_page_channels_, channel_id)); |
| return; |
| } |
| EnqueuePendingMessageForLazyBackgroundLoad(source_port_id, |
| channel_id, |
| message); |
| } |
| |
| void MessageService::EnqueuePendingMessageForLazyBackgroundLoad( |
| const PortId& source_port_id, |
| const ChannelId& channel_id, |
| const Message& message) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| |
| auto pending = pending_lazy_background_page_channels_.find(channel_id); |
| if (pending != pending_lazy_background_page_channels_.end()) { |
| const LazyContextId context_id(pending->second.browser_context(), |
| pending->second.extension_id()); |
| context_id.GetTaskQueue()->AddPendingTask( |
| context_id, |
| base::BindOnce(&MessageService::PendingLazyBackgroundPagePostMessage, |
| weak_factory_.GetWeakPtr(), source_port_id, message)); |
| } |
| } |
| |
| void MessageService::DispatchMessage(const PortId& source_port_id, |
| MessageChannel* channel, |
| const Message& message) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| |
| // Figure out which port the ID corresponds to. |
| MessagePort* dest_port = source_port_id.is_opener ? channel->receiver.get() |
| : channel->opener.get(); |
| |
| dest_port->DispatchOnMessage(message); |
| } |
| |
| bool MessageService::MaybeAddPendingLazyBackgroundPageOpenChannelTask( |
| BrowserContext* context, |
| const Extension* extension, |
| std::unique_ptr<OpenChannelParams>* params, |
| const PendingMessagesQueue& pending_messages) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| |
| if (!BackgroundInfo::HasLazyBackgroundPage(extension)) |
| return false; |
| |
| // If the extension uses spanning incognito mode, make sure we're always |
| // using the original profile since that is what the extension process |
| // will use. |
| if (!IncognitoInfo::IsSplitMode(extension)) |
| context = ExtensionsBrowserClient::Get()->GetOriginalContext(context); |
| |
| const LazyContextId context_id(context, extension->id()); |
| LazyContextTaskQueue* task_queue = context_id.GetTaskQueue(); |
| if (!task_queue->ShouldEnqueueTask(context, extension)) |
| return false; |
| |
| ChannelId channel_id = (*params)->receiver_port_id.GetChannelId(); |
| pending_lazy_background_page_channels_.insert(std::make_pair( |
| channel_id, PendingLazyBackgroundPageChannel(context, extension->id()))); |
| int source_id = (*params)->source_process_id; |
| task_queue->AddPendingTask( |
| context_id, |
| base::BindOnce(&MessageService::PendingLazyBackgroundPageOpenChannel, |
| weak_factory_.GetWeakPtr(), base::Passed(params), |
| source_id)); |
| |
| for (const PendingMessage& message : pending_messages) { |
| EnqueuePendingMessageForLazyBackgroundLoad(message.first, channel_id, |
| message.second); |
| } |
| return true; |
| } |
| |
| void MessageService::OnOpenChannelAllowed( |
| std::unique_ptr<OpenChannelParams> params, |
| bool allowed) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| |
| ChannelId channel_id = params->receiver_port_id.GetChannelId(); |
| |
| auto pending_for_incognito = pending_incognito_channels_.find(channel_id); |
| if (pending_for_incognito == pending_incognito_channels_.end()) { |
| NOTREACHED(); |
| return; |
| } |
| PendingMessagesQueue pending_messages; |
| pending_messages.swap(pending_for_incognito->second); |
| pending_incognito_channels_.erase(pending_for_incognito); |
| |
| // Re-lookup the source process since it may no longer be valid. |
| content::RenderFrameHost* source = |
| content::RenderFrameHost::FromID(params->source_process_id, |
| params->source_routing_id); |
| if (!source) { |
| return; |
| } |
| |
| if (!allowed) { |
| DispatchOnDisconnect(source, params->receiver_port_id, |
| kReceivingEndDoesntExistError); |
| return; |
| } |
| |
| content::RenderProcessHost* source_process = source->GetProcess(); |
| BrowserContext* context = source_process->GetBrowserContext(); |
| |
| // Note: we use the source's profile here. If the source is an incognito |
| // process, we will use the incognito EPM to find the right extension process, |
| // which depends on whether the extension uses spanning or split mode. |
| if (content::RenderProcessHost* extension_process = |
| GetExtensionProcess(context, params->target_extension_id)) { |
| params->receiver.reset( |
| new ExtensionMessagePort( |
| weak_factory_.GetWeakPtr(), params->receiver_port_id, |
| params->target_extension_id, extension_process)); |
| } else { |
| params->receiver.reset(); |
| } |
| |
| ExtensionRegistry* registry = ExtensionRegistry::Get(context); |
| const Extension* target_extension = |
| registry->enabled_extensions().GetByID(params->target_extension_id); |
| if (!target_extension) { |
| DispatchOnDisconnect(source, params->receiver_port_id, |
| kReceivingEndDoesntExistError); |
| return; |
| } |
| |
| // The target might be a lazy background page. In that case, we have to check |
| // if it is loaded and ready, and if not, queue up the task and load the |
| // page. |
| if (!MaybeAddPendingLazyBackgroundPageOpenChannelTask( |
| context, target_extension, ¶ms, pending_messages)) { |
| OpenChannelImpl(context, std::move(params), target_extension, |
| false /* did_enqueue */); |
| DispatchPendingMessages(pending_messages, channel_id); |
| } |
| } |
| |
| void MessageService::PendingLazyBackgroundPageOpenChannel( |
| std::unique_ptr<OpenChannelParams> params, |
| int source_process_id, |
| std::unique_ptr<LazyContextTaskQueue::ContextInfo> context_info) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| |
| if (context_info == nullptr) |
| return; // TODO(mpcomplete): notify source of disconnect? |
| |
| params->receiver.reset(new ExtensionMessagePort( |
| weak_factory_.GetWeakPtr(), params->receiver_port_id, |
| params->target_extension_id, context_info->render_process_host)); |
| const Extension* const extension = |
| extensions::ExtensionRegistry::Get(context_info->browser_context) |
| ->enabled_extensions() |
| .GetByID(context_info->extension_id); |
| OpenChannelImpl(context_info->browser_context, std::move(params), extension, |
| true /* did_enqueue */); |
| } |
| |
| void MessageService::DispatchOnDisconnect(content::RenderFrameHost* source, |
| const PortId& port_id, |
| const std::string& error_message) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| |
| ExtensionMessagePort port(weak_factory_.GetWeakPtr(), |
| port_id.GetOppositePortId(), "", source, false); |
| if (!port.IsValidPort()) |
| return; |
| port.DispatchOnDisconnect(error_message); |
| } |
| |
| void MessageService::DispatchPendingMessages(const PendingMessagesQueue& queue, |
| const ChannelId& channel_id) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| |
| auto channel_iter = channels_.find(channel_id); |
| if (channel_iter != channels_.end()) { |
| for (const PendingMessage& message : queue) { |
| DispatchMessage(message.first, channel_iter->second.get(), |
| message.second); |
| } |
| } |
| } |
| |
| } // namespace extensions |
