| // 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 "content/browser/worker_host/worker_process_host.h" |
| |
| #include <set> |
| #include <string> |
| #include <vector> |
| |
| #include "base/base_switches.h" |
| #include "base/bind.h" |
| #include "base/bind_helpers.h" |
| #include "base/callback.h" |
| #include "base/command_line.h" |
| #include "base/message_loop/message_loop.h" |
| #include "base/strings/string_util.h" |
| #include "base/strings/utf_string_conversions.h" |
| #include "content/browser/appcache/appcache_dispatcher_host.h" |
| #include "content/browser/appcache/chrome_appcache_service.h" |
| #include "content/browser/browser_child_process_host_impl.h" |
| #include "content/browser/child_process_security_policy_impl.h" |
| #include "content/browser/devtools/worker_devtools_manager.h" |
| #include "content/browser/devtools/worker_devtools_message_filter.h" |
| #include "content/browser/fileapi/fileapi_message_filter.h" |
| #include "content/browser/indexed_db/indexed_db_dispatcher_host.h" |
| #include "content/browser/loader/resource_message_filter.h" |
| #include "content/browser/message_port_message_filter.h" |
| #include "content/browser/message_port_service.h" |
| #include "content/browser/mime_registry_message_filter.h" |
| #include "content/browser/quota_dispatcher_host.h" |
| #include "content/browser/renderer_host/database_message_filter.h" |
| #include "content/browser/renderer_host/file_utilities_message_filter.h" |
| #include "content/browser/renderer_host/render_view_host_delegate.h" |
| #include "content/browser/renderer_host/render_view_host_impl.h" |
| #include "content/browser/renderer_host/socket_stream_dispatcher_host.h" |
| #include "content/browser/resource_context_impl.h" |
| #include "content/browser/worker_host/worker_message_filter.h" |
| #include "content/browser/worker_host/worker_service_impl.h" |
| #include "content/common/child_process_host_impl.h" |
| #include "content/common/view_messages.h" |
| #include "content/common/worker_messages.h" |
| #include "content/public/browser/browser_thread.h" |
| #include "content/public/browser/content_browser_client.h" |
| #include "content/public/browser/user_metrics.h" |
| #include "content/public/common/content_switches.h" |
| #include "content/public/common/result_codes.h" |
| #include "ipc/ipc_switches.h" |
| #include "net/base/mime_util.h" |
| #include "net/base/registry_controlled_domains/registry_controlled_domain.h" |
| #include "net/url_request/url_request_context_getter.h" |
| #include "ui/base/ui_base_switches.h" |
| #include "webkit/browser/fileapi/file_system_context.h" |
| #include "webkit/browser/fileapi/sandbox_file_system_backend.h" |
| #include "webkit/common/resource_type.h" |
| |
| #if defined(OS_WIN) |
| #include "content/common/sandbox_win.h" |
| #include "content/public/common/sandboxed_process_launcher_delegate.h" |
| #endif |
| |
| namespace content { |
| namespace { |
| |
| #if defined(OS_WIN) |
| // NOTE: changes to this class need to be reviewed by the security team. |
| class WorkerSandboxedProcessLauncherDelegate |
| : public content::SandboxedProcessLauncherDelegate { |
| public: |
| WorkerSandboxedProcessLauncherDelegate() {} |
| virtual ~WorkerSandboxedProcessLauncherDelegate() {} |
| |
| virtual void PreSpawnTarget(sandbox::TargetPolicy* policy, |
| bool* success) { |
| AddBaseHandleClosePolicy(policy); |
| } |
| }; |
| #endif // OS_WIN |
| |
| } // namespace |
| |
| // Notifies RenderViewHost that one or more worker objects crashed. |
| void WorkerCrashCallback(int render_process_unique_id, int render_view_id) { |
| RenderViewHostImpl* host = |
| RenderViewHostImpl::FromID(render_process_unique_id, render_view_id); |
| if (host) |
| host->GetDelegate()->WorkerCrashed(); |
| } |
| |
| WorkerProcessHost::WorkerProcessHost( |
| ResourceContext* resource_context, |
| const WorkerStoragePartition& partition) |
| : resource_context_(resource_context), |
| partition_(partition), |
| process_launched_(false) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| DCHECK(resource_context_); |
| process_.reset( |
| new BrowserChildProcessHostImpl(PROCESS_TYPE_WORKER, this)); |
| } |
| |
| WorkerProcessHost::~WorkerProcessHost() { |
| // If we crashed, tell the RenderViewHosts. |
| for (Instances::iterator i = instances_.begin(); i != instances_.end(); ++i) { |
| const WorkerDocumentSet::DocumentInfoSet& parents = |
| i->worker_document_set()->documents(); |
| for (WorkerDocumentSet::DocumentInfoSet::const_iterator parent_iter = |
| parents.begin(); parent_iter != parents.end(); ++parent_iter) { |
| BrowserThread::PostTask( |
| BrowserThread::UI, FROM_HERE, |
| base::Bind(&WorkerCrashCallback, parent_iter->render_process_id(), |
| parent_iter->render_view_id())); |
| } |
| WorkerServiceImpl::GetInstance()->NotifyWorkerDestroyed( |
| this, i->worker_route_id()); |
| } |
| |
| ChildProcessSecurityPolicyImpl::GetInstance()->Remove( |
| process_->GetData().id); |
| } |
| |
| bool WorkerProcessHost::Send(IPC::Message* message) { |
| return process_->Send(message); |
| } |
| |
| bool WorkerProcessHost::Init(int render_process_id) { |
| std::string channel_id = process_->GetHost()->CreateChannel(); |
| if (channel_id.empty()) |
| return false; |
| |
| #if defined(OS_LINUX) |
| int flags = ChildProcessHost::CHILD_ALLOW_SELF; |
| #else |
| int flags = ChildProcessHost::CHILD_NORMAL; |
| #endif |
| |
| base::FilePath exe_path = ChildProcessHost::GetChildPath(flags); |
| if (exe_path.empty()) |
| return false; |
| |
| CommandLine* cmd_line = new CommandLine(exe_path); |
| cmd_line->AppendSwitchASCII(switches::kProcessType, switches::kWorkerProcess); |
| cmd_line->AppendSwitchASCII(switches::kProcessChannelID, channel_id); |
| std::string locale = GetContentClient()->browser()->GetApplicationLocale(); |
| cmd_line->AppendSwitchASCII(switches::kLang, locale); |
| |
| static const char* const kSwitchNames[] = { |
| switches::kDisableApplicationCache, |
| switches::kDisableDatabases, |
| #if defined(OS_WIN) |
| switches::kDisableDesktopNotifications, |
| #endif |
| switches::kDisableFileSystem, |
| switches::kDisableSeccompFilterSandbox, |
| switches::kEnableExperimentalWebPlatformFeatures, |
| switches::kEnableServiceWorker, |
| #if defined(OS_MACOSX) |
| switches::kEnableSandboxLogging, |
| #endif |
| switches::kJavaScriptFlags |
| }; |
| cmd_line->CopySwitchesFrom(*CommandLine::ForCurrentProcess(), kSwitchNames, |
| arraysize(kSwitchNames)); |
| |
| #if defined(OS_POSIX) |
| bool use_zygote = true; |
| |
| if (CommandLine::ForCurrentProcess()->HasSwitch( |
| switches::kWaitForDebuggerChildren)) { |
| // Look to pass-on the kWaitForDebugger flag. |
| std::string value = CommandLine::ForCurrentProcess()->GetSwitchValueASCII( |
| switches::kWaitForDebuggerChildren); |
| if (value.empty() || value == switches::kWorkerProcess) { |
| cmd_line->AppendSwitch(switches::kWaitForDebugger); |
| use_zygote = false; |
| } |
| } |
| |
| if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kDebugChildren)) { |
| // Look to pass-on the kDebugOnStart flag. |
| std::string value = CommandLine::ForCurrentProcess()->GetSwitchValueASCII( |
| switches::kDebugChildren); |
| if (value.empty() || value == switches::kWorkerProcess) { |
| // launches a new xterm, and runs the worker process in gdb, reading |
| // optional commands from gdb_chrome file in the working directory. |
| cmd_line->PrependWrapper("xterm -e gdb -x gdb_chrome --args"); |
| use_zygote = false; |
| } |
| } |
| #endif |
| |
| process_->Launch( |
| #if defined(OS_WIN) |
| new WorkerSandboxedProcessLauncherDelegate, |
| #elif defined(OS_POSIX) |
| use_zygote, |
| base::EnvironmentMap(), |
| #endif |
| cmd_line); |
| |
| ChildProcessSecurityPolicyImpl::GetInstance()->AddWorker( |
| process_->GetData().id, render_process_id); |
| CreateMessageFilters(render_process_id); |
| |
| return true; |
| } |
| |
| void WorkerProcessHost::CreateMessageFilters(int render_process_id) { |
| ChromeBlobStorageContext* blob_storage_context = |
| GetChromeBlobStorageContextForResourceContext(resource_context_); |
| StreamContext* stream_context = |
| GetStreamContextForResourceContext(resource_context_); |
| |
| net::URLRequestContextGetter* url_request_context = |
| partition_.url_request_context(); |
| |
| ResourceMessageFilter::GetContextsCallback get_contexts_callback( |
| base::Bind(&WorkerProcessHost::GetContexts, |
| base::Unretained(this))); |
| |
| ResourceMessageFilter* resource_message_filter = new ResourceMessageFilter( |
| process_->GetData().id, PROCESS_TYPE_WORKER, |
| partition_.appcache_service(), |
| blob_storage_context, |
| partition_.filesystem_context(), |
| get_contexts_callback); |
| process_->AddFilter(resource_message_filter); |
| |
| MessagePortMessageFilter* message_port_message_filter = |
| new MessagePortMessageFilter( |
| base::Bind(&WorkerServiceImpl::next_worker_route_id, |
| base::Unretained(WorkerServiceImpl::GetInstance()))); |
| process_->AddFilter(message_port_message_filter); |
| worker_message_filter_ = new WorkerMessageFilter(render_process_id, |
| resource_context_, |
| partition_, |
| message_port_message_filter); |
| process_->AddFilter(worker_message_filter_.get()); |
| process_->AddFilter(new AppCacheDispatcherHost( |
| partition_.appcache_service(), process_->GetData().id)); |
| process_->AddFilter(new FileAPIMessageFilter( |
| process_->GetData().id, |
| url_request_context, |
| partition_.filesystem_context(), |
| blob_storage_context, |
| stream_context)); |
| process_->AddFilter(new FileUtilitiesMessageFilter( |
| process_->GetData().id)); |
| process_->AddFilter(new MimeRegistryMessageFilter()); |
| process_->AddFilter(new DatabaseMessageFilter(partition_.database_tracker())); |
| process_->AddFilter(new QuotaDispatcherHost( |
| process_->GetData().id, |
| partition_.quota_manager(), |
| GetContentClient()->browser()->CreateQuotaPermissionContext())); |
| |
| SocketStreamDispatcherHost::GetRequestContextCallback |
| request_context_callback( |
| base::Bind(&WorkerProcessHost::GetRequestContext, |
| base::Unretained(this))); |
| |
| SocketStreamDispatcherHost* socket_stream_dispatcher_host = |
| new SocketStreamDispatcherHost( |
| render_process_id, |
| request_context_callback, |
| resource_context_); |
| socket_stream_dispatcher_host_ = socket_stream_dispatcher_host; |
| process_->AddFilter(socket_stream_dispatcher_host); |
| process_->AddFilter(new WorkerDevToolsMessageFilter(process_->GetData().id)); |
| process_->AddFilter( |
| new IndexedDBDispatcherHost(partition_.indexed_db_context())); |
| } |
| |
| void WorkerProcessHost::CreateWorker(const WorkerInstance& instance) { |
| ChildProcessSecurityPolicyImpl::GetInstance()->GrantRequestURL( |
| process_->GetData().id, instance.url()); |
| |
| instances_.push_back(instance); |
| |
| WorkerProcessMsg_CreateWorker_Params params; |
| params.url = instance.url(); |
| params.name = instance.name(); |
| params.route_id = instance.worker_route_id(); |
| params.creator_process_id = instance.parent_process_id(); |
| params.shared_worker_appcache_id = instance.main_resource_appcache_id(); |
| Send(new WorkerProcessMsg_CreateWorker(params)); |
| |
| UpdateTitle(); |
| |
| // Walk all pending filters and let them know the worker has been created |
| // (could be more than one in the case where we had to queue up worker |
| // creation because the worker process limit was reached). |
| for (WorkerInstance::FilterList::const_iterator i = |
| instance.filters().begin(); |
| i != instance.filters().end(); ++i) { |
| CHECK(i->first); |
| i->first->Send(new ViewMsg_WorkerCreated(i->second)); |
| } |
| } |
| |
| bool WorkerProcessHost::FilterMessage(const IPC::Message& message, |
| WorkerMessageFilter* filter) { |
| for (Instances::iterator i = instances_.begin(); i != instances_.end(); ++i) { |
| if (!i->closed() && i->HasFilter(filter, message.routing_id())) { |
| RelayMessage(message, worker_message_filter_.get(), i->worker_route_id()); |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| void WorkerProcessHost::OnProcessLaunched() { |
| process_launched_ = true; |
| |
| WorkerServiceImpl::GetInstance()->NotifyWorkerProcessCreated(); |
| } |
| |
| bool WorkerProcessHost::OnMessageReceived(const IPC::Message& message) { |
| bool msg_is_ok = true; |
| bool handled = true; |
| IPC_BEGIN_MESSAGE_MAP_EX(WorkerProcessHost, message, msg_is_ok) |
| IPC_MESSAGE_HANDLER(WorkerHostMsg_WorkerContextClosed, |
| OnWorkerContextClosed) |
| IPC_MESSAGE_HANDLER(WorkerProcessHostMsg_AllowDatabase, OnAllowDatabase) |
| IPC_MESSAGE_HANDLER(WorkerProcessHostMsg_AllowFileSystem, OnAllowFileSystem) |
| IPC_MESSAGE_HANDLER(WorkerProcessHostMsg_AllowIndexedDB, OnAllowIndexedDB) |
| IPC_MESSAGE_HANDLER(WorkerProcessHostMsg_ForceKillWorker, |
| OnForceKillWorkerProcess) |
| IPC_MESSAGE_UNHANDLED(handled = false) |
| IPC_END_MESSAGE_MAP_EX() |
| |
| if (!msg_is_ok) { |
| NOTREACHED(); |
| RecordAction(UserMetricsAction("BadMessageTerminate_WPH")); |
| base::KillProcess( |
| process_->GetData().handle, RESULT_CODE_KILLED_BAD_MESSAGE, false); |
| } |
| |
| if (handled) |
| return true; |
| |
| if (message.type() == WorkerHostMsg_WorkerContextDestroyed::ID) { |
| WorkerServiceImpl::GetInstance()->NotifyWorkerDestroyed( |
| this, message.routing_id()); |
| } |
| |
| for (Instances::iterator i = instances_.begin(); i != instances_.end(); ++i) { |
| if (i->worker_route_id() == message.routing_id()) { |
| if (message.type() == WorkerHostMsg_WorkerContextDestroyed::ID) { |
| instances_.erase(i); |
| UpdateTitle(); |
| } |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| // Sent to notify the browser process when a worker context invokes close(), so |
| // no new connections are sent to shared workers. |
| void WorkerProcessHost::OnWorkerContextClosed(int worker_route_id) { |
| for (Instances::iterator i = instances_.begin(); i != instances_.end(); ++i) { |
| if (i->worker_route_id() == worker_route_id) { |
| // Set the closed flag - this will stop any further messages from |
| // being sent to the worker (messages can still be sent from the worker, |
| // for exception reporting, etc). |
| i->set_closed(true); |
| break; |
| } |
| } |
| } |
| |
| void WorkerProcessHost::OnAllowDatabase(int worker_route_id, |
| const GURL& url, |
| const base::string16& name, |
| const base::string16& display_name, |
| unsigned long estimated_size, |
| bool* result) { |
| *result = GetContentClient()->browser()->AllowWorkerDatabase( |
| url, name, display_name, estimated_size, resource_context_, |
| GetRenderViewIDsForWorker(worker_route_id)); |
| } |
| |
| void WorkerProcessHost::OnAllowFileSystem(int worker_route_id, |
| const GURL& url, |
| bool* result) { |
| *result = GetContentClient()->browser()->AllowWorkerFileSystem( |
| url, resource_context_, GetRenderViewIDsForWorker(worker_route_id)); |
| } |
| |
| void WorkerProcessHost::OnAllowIndexedDB(int worker_route_id, |
| const GURL& url, |
| const base::string16& name, |
| bool* result) { |
| *result = GetContentClient()->browser()->AllowWorkerIndexedDB( |
| url, name, resource_context_, GetRenderViewIDsForWorker(worker_route_id)); |
| } |
| |
| void WorkerProcessHost::OnForceKillWorkerProcess() { |
| if (process_ && process_launched_) |
| base::KillProcess( |
| process_->GetData().handle, RESULT_CODE_NORMAL_EXIT, false); |
| else |
| RecordAction(UserMetricsAction("WorkerProcess_BadProcessToKill")); |
| } |
| |
| void WorkerProcessHost::RelayMessage( |
| const IPC::Message& message, |
| WorkerMessageFilter* filter, |
| int route_id) { |
| if (message.type() == WorkerMsg_Connect::ID) { |
| // Crack the SharedWorker Connect message to setup routing for the port. |
| int sent_message_port_id; |
| int new_routing_id; |
| if (!WorkerMsg_Connect::Read( |
| &message, &sent_message_port_id, &new_routing_id)) { |
| return; |
| } |
| new_routing_id = filter->GetNextRoutingID(); |
| MessagePortService::GetInstance()->UpdateMessagePort( |
| sent_message_port_id, |
| filter->message_port_message_filter(), |
| new_routing_id); |
| |
| // Resend the message with the new routing id. |
| filter->Send(new WorkerMsg_Connect( |
| route_id, sent_message_port_id, new_routing_id)); |
| |
| // Send any queued messages for the sent port. |
| MessagePortService::GetInstance()->SendQueuedMessagesIfPossible( |
| sent_message_port_id); |
| } else { |
| IPC::Message* new_message = new IPC::Message(message); |
| new_message->set_routing_id(route_id); |
| filter->Send(new_message); |
| if (message.type() == WorkerMsg_StartWorkerContext::ID) { |
| WorkerDevToolsManager::GetInstance()->WorkerContextStarted( |
| this, route_id); |
| } |
| return; |
| } |
| } |
| |
| void WorkerProcessHost::ShutdownSocketStreamDispatcherHostIfNecessary() { |
| if (!instances_.size() && socket_stream_dispatcher_host_.get()) { |
| // We can assume that this object is going to delete, because |
| // currently a WorkerInstance will never be added to a WorkerProcessHost |
| // once it is initialized. |
| |
| // SocketStreamDispatcherHost should be notified now that the worker |
| // process will shutdown soon. |
| socket_stream_dispatcher_host_->Shutdown(); |
| socket_stream_dispatcher_host_ = NULL; |
| } |
| } |
| |
| void WorkerProcessHost::FilterShutdown(WorkerMessageFilter* filter) { |
| for (Instances::iterator i = instances_.begin(); i != instances_.end();) { |
| bool shutdown = false; |
| i->RemoveFilters(filter); |
| |
| i->worker_document_set()->RemoveAll(filter); |
| if (i->worker_document_set()->IsEmpty()) { |
| shutdown = true; |
| } |
| if (shutdown) { |
| Send(new WorkerMsg_TerminateWorkerContext(i->worker_route_id())); |
| i = instances_.erase(i); |
| } else { |
| ++i; |
| } |
| } |
| ShutdownSocketStreamDispatcherHostIfNecessary(); |
| } |
| |
| bool WorkerProcessHost::CanShutdown() { |
| return instances_.empty(); |
| } |
| |
| void WorkerProcessHost::UpdateTitle() { |
| std::set<std::string> titles; |
| for (Instances::iterator i = instances_.begin(); i != instances_.end(); ++i) { |
| // Allow the embedder first crack at special casing the title. |
| std::string title = GetContentClient()->browser()-> |
| GetWorkerProcessTitle(i->url(), resource_context_); |
| |
| if (title.empty()) { |
| title = net::registry_controlled_domains::GetDomainAndRegistry( |
| i->url(), |
| net::registry_controlled_domains::EXCLUDE_PRIVATE_REGISTRIES); |
| } |
| |
| // Use the host name if the domain is empty, i.e. localhost or IP address. |
| if (title.empty()) |
| title = i->url().host(); |
| |
| // If the host name is empty, i.e. file url, use the path. |
| if (title.empty()) |
| title = i->url().path(); |
| titles.insert(title); |
| } |
| |
| std::string display_title; |
| for (std::set<std::string>::iterator i = titles.begin(); |
| i != titles.end(); ++i) { |
| if (!display_title.empty()) |
| display_title += ", "; |
| display_title += *i; |
| } |
| |
| process_->SetName(UTF8ToUTF16(display_title)); |
| } |
| |
| void WorkerProcessHost::DocumentDetached(WorkerMessageFilter* filter, |
| unsigned long long document_id) { |
| // Walk all instances and remove the document from their document set. |
| for (Instances::iterator i = instances_.begin(); i != instances_.end();) { |
| i->worker_document_set()->Remove(filter, document_id); |
| if (i->worker_document_set()->IsEmpty()) { |
| // This worker has no more associated documents - shut it down. |
| Send(new WorkerMsg_TerminateWorkerContext(i->worker_route_id())); |
| i = instances_.erase(i); |
| } else { |
| ++i; |
| } |
| } |
| ShutdownSocketStreamDispatcherHostIfNecessary(); |
| } |
| |
| void WorkerProcessHost::TerminateWorker(int worker_route_id) { |
| Send(new WorkerMsg_TerminateWorkerContext(worker_route_id)); |
| } |
| |
| void WorkerProcessHost::SetBackgrounded(bool backgrounded) { |
| process_->SetBackgrounded(backgrounded); |
| } |
| |
| const ChildProcessData& WorkerProcessHost::GetData() { |
| return process_->GetData(); |
| } |
| |
| std::vector<std::pair<int, int> > WorkerProcessHost::GetRenderViewIDsForWorker( |
| int worker_route_id) { |
| std::vector<std::pair<int, int> > result; |
| WorkerProcessHost::Instances::const_iterator i; |
| for (i = instances_.begin(); i != instances_.end(); ++i) { |
| if (i->worker_route_id() != worker_route_id) |
| continue; |
| const WorkerDocumentSet::DocumentInfoSet& documents = |
| i->worker_document_set()->documents(); |
| for (WorkerDocumentSet::DocumentInfoSet::const_iterator doc = |
| documents.begin(); doc != documents.end(); ++doc) { |
| result.push_back( |
| std::make_pair(doc->render_process_id(), doc->render_view_id())); |
| } |
| break; |
| } |
| return result; |
| } |
| |
| void WorkerProcessHost::GetContexts(const ResourceHostMsg_Request& request, |
| ResourceContext** resource_context, |
| net::URLRequestContext** request_context) { |
| *resource_context = resource_context_; |
| *request_context = partition_.url_request_context()->GetURLRequestContext(); |
| } |
| |
| net::URLRequestContext* WorkerProcessHost::GetRequestContext( |
| ResourceType::Type resource_type) { |
| return partition_.url_request_context()->GetURLRequestContext(); |
| } |
| |
| WorkerProcessHost::WorkerInstance::WorkerInstance( |
| const GURL& url, |
| const base::string16& name, |
| int worker_route_id, |
| int parent_process_id, |
| int64 main_resource_appcache_id, |
| ResourceContext* resource_context, |
| const WorkerStoragePartition& partition) |
| : url_(url), |
| closed_(false), |
| name_(name), |
| worker_route_id_(worker_route_id), |
| parent_process_id_(parent_process_id), |
| main_resource_appcache_id_(main_resource_appcache_id), |
| worker_document_set_(new WorkerDocumentSet()), |
| resource_context_(resource_context), |
| partition_(partition) { |
| DCHECK(resource_context_); |
| } |
| |
| WorkerProcessHost::WorkerInstance::WorkerInstance( |
| const GURL& url, |
| bool shared, |
| const base::string16& name, |
| ResourceContext* resource_context, |
| const WorkerStoragePartition& partition) |
| : url_(url), |
| closed_(false), |
| name_(name), |
| worker_route_id_(MSG_ROUTING_NONE), |
| parent_process_id_(0), |
| main_resource_appcache_id_(0), |
| worker_document_set_(new WorkerDocumentSet()), |
| resource_context_(resource_context), |
| partition_(partition) { |
| DCHECK(resource_context_); |
| } |
| |
| WorkerProcessHost::WorkerInstance::~WorkerInstance() { |
| } |
| |
| // Compares an instance based on the algorithm in the WebWorkers spec - an |
| // instance matches if the origins of the URLs match, and: |
| // a) the names are non-empty and equal |
| // -or- |
| // b) the names are both empty, and the urls are equal |
| bool WorkerProcessHost::WorkerInstance::Matches( |
| const GURL& match_url, |
| const base::string16& match_name, |
| const WorkerStoragePartition& partition, |
| ResourceContext* resource_context) const { |
| // Only match open shared workers. |
| if (closed_) |
| return false; |
| |
| // ResourceContext equivalence is being used as a proxy to ensure we only |
| // matched shared workers within the same BrowserContext. |
| if (resource_context_ != resource_context) |
| return false; |
| |
| // We must be in the same storage partition otherwise sharing will violate |
| // isolation. |
| if (!partition_.Equals(partition)) |
| return false; |
| |
| if (url_.GetOrigin() != match_url.GetOrigin()) |
| return false; |
| |
| if (name_.empty() && match_name.empty()) |
| return url_ == match_url; |
| |
| return name_ == match_name; |
| } |
| |
| void WorkerProcessHost::WorkerInstance::AddFilter(WorkerMessageFilter* filter, |
| int route_id) { |
| CHECK(filter); |
| if (!HasFilter(filter, route_id)) { |
| FilterInfo info(filter, route_id); |
| filters_.push_back(info); |
| } |
| } |
| |
| void WorkerProcessHost::WorkerInstance::RemoveFilter( |
| WorkerMessageFilter* filter, int route_id) { |
| for (FilterList::iterator i = filters_.begin(); i != filters_.end();) { |
| if (i->first == filter && i->second == route_id) |
| i = filters_.erase(i); |
| else |
| ++i; |
| } |
| // Should not be duplicate copies in the filter set. |
| DCHECK(!HasFilter(filter, route_id)); |
| } |
| |
| void WorkerProcessHost::WorkerInstance::RemoveFilters( |
| WorkerMessageFilter* filter) { |
| for (FilterList::iterator i = filters_.begin(); i != filters_.end();) { |
| if (i->first == filter) |
| i = filters_.erase(i); |
| else |
| ++i; |
| } |
| } |
| |
| bool WorkerProcessHost::WorkerInstance::HasFilter( |
| WorkerMessageFilter* filter, int route_id) const { |
| for (FilterList::const_iterator i = filters_.begin(); i != filters_.end(); |
| ++i) { |
| if (i->first == filter && i->second == route_id) |
| return true; |
| } |
| return false; |
| } |
| |
| bool WorkerProcessHost::WorkerInstance::RendererIsParent( |
| int render_process_id, int render_view_id) const { |
| const WorkerDocumentSet::DocumentInfoSet& parents = |
| worker_document_set()->documents(); |
| for (WorkerDocumentSet::DocumentInfoSet::const_iterator parent_iter = |
| parents.begin(); |
| parent_iter != parents.end(); ++parent_iter) { |
| if (parent_iter->render_process_id() == render_process_id && |
| parent_iter->render_view_id() == render_view_id) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| WorkerProcessHost::WorkerInstance::FilterInfo |
| WorkerProcessHost::WorkerInstance::GetFilter() const { |
| DCHECK(NumFilters() == 1); |
| return *filters_.begin(); |
| } |
| |
| } // namespace content |