mojo/shell/application_manager.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef SHELL_APPLICATION_MANAGER_APPLICATION_MANAGER_H_
   6 #define SHELL_APPLICATION_MANAGER_APPLICATION_MANAGER_H_
   7
   8 #include <map>
   9
  10 #include "base/macros.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/memory/scoped_vector.h"
  13 #include "base/memory/weak_ptr.h"
  14 #include "mojo/application/public/interfaces/application.mojom.h"
  15 #include "mojo/application/public/interfaces/service_provider.mojom.h"
  16 #include "mojo/public/cpp/bindings/interface_ptr_info.h"
  17 #include "mojo/public/cpp/bindings/interface_request.h"
  18 #include "mojo/services/network/public/interfaces/url_loader_factory.mojom.h"
  19 #include "mojo/services/updater/updater.mojom.h"
  20 #include "mojo/shell/application_loader.h"
  21 #include "mojo/shell/fetcher.h"
  22 #include "mojo/shell/identity.h"
  23 #include "mojo/shell/native_runner.h"
  24 #include "url/gurl.h"
  25
  26 namespace base {
  27 class FilePath;
  28 class SequencedWorkerPool;
  29 }
  30
  31 namespace mojo {
  32 namespace shell {
  33
  34 class ApplicationInstance;
  35 class ContentHandlerConnection;
  36
  37 class ApplicationManager {
  38  public:
  39   class Delegate {
  40    public:
  41     // Gives the delegate a chance to apply any mappings for the specified url.
  42     // This should not resolve 'mojo' urls, that is done by ResolveMojoURL().
  43     virtual GURL ResolveMappings(const GURL& url) = 0;
  44
  45     // Used to map a url with the scheme 'mojo' to the appropriate url. Return
  46     // |url| if the scheme is not 'mojo'.
  47     virtual GURL ResolveMojoURL(const GURL& url) = 0;
  48
  49     // Asks the delegate to create a Fetcher for the specified url. Return
  50     // true on success, false if the default fetcher should be created.
  51     virtual bool CreateFetcher(
  52         const GURL& url,
  53         const Fetcher::FetchCallback& loader_callback) = 0;
  54
  55    protected:
  56     virtual ~Delegate() {}
  57   };
  58
  59   // API for testing.
  60   class TestAPI {
  61    public:
  62     explicit TestAPI(ApplicationManager* manager);
  63     ~TestAPI();
  64
  65     // Returns true if the shared instance has been created.
  66     static bool HasCreatedInstance();
  67     // Returns true if there is a ApplicationInstance for this URL.
  68     bool HasRunningInstanceForURL(const GURL& url) const;
  69
  70    private:
  71     ApplicationManager* manager_;
  72
  73     DISALLOW_COPY_AND_ASSIGN(TestAPI);
  74   };
  75
  76   explicit ApplicationManager(Delegate* delegate);
  77   ~ApplicationManager();
  78
  79   // Loads a service if necessary and establishes a new client connection.
  80   // |originator| can be NULL (e.g. for the first application or in tests), but
  81   // typically is non-NULL and identifies the instance initiating the
  82   // connection.
  83   void ConnectToApplication(
  84       ApplicationInstance* originator,
  85       URLRequestPtr requested_url,
  86       const std::string& qualifier,
  87       const GURL& requestor_url,
  88       InterfaceRequest<ServiceProvider> services,
  89       ServiceProviderPtr exposed_services,
  90       CapabilityFilterPtr filter,
  91       const base::Closure& on_application_end);
  92
  93   // Must only be used by shell internals and test code as it does not forward
  94   // capability filters.
  95   template <typename Interface>
  96   inline void ConnectToService(const GURL& application_url,
  97                                InterfacePtr<Interface>* ptr) {
  98     ScopedMessagePipeHandle service_handle =
  99         ConnectToServiceByName(application_url, Interface::Name_);
 100     ptr->Bind(InterfacePtrInfo<Interface>(service_handle.Pass(), 0u));
 101   }
 102
 103   void RegisterContentHandler(const std::string& mime_type,
 104                               const GURL& content_handler_url);
 105
 106   // Registers a package alias. When attempting to load |alias|, it will
 107   // instead redirect to |content_handler_package|, which is a content handler
 108   // which will be passed the |alias| as the URLResponse::url. Different values
 109   // of |alias| with the same |qualifier| that are in the same
 110   // |content_handler_package| will run in the same process in multi-process
 111   // mode.
 112   void RegisterApplicationPackageAlias(const GURL& alias,
 113                                        const GURL& content_handler_package,
 114                                        const std::string& qualifier);
 115
 116   // Sets the default Loader to be used if not overridden by SetLoaderForURL()
 117   // or SetLoaderForScheme().
 118   void set_default_loader(scoped_ptr<ApplicationLoader> loader) {
 119     default_loader_ = loader.Pass();
 120   }
 121   void set_native_runner_factory(
 122       scoped_ptr<NativeRunnerFactory> runner_factory) {
 123     native_runner_factory_ = runner_factory.Pass();
 124   }
 125   void set_blocking_pool(base::SequencedWorkerPool* blocking_pool) {
 126     blocking_pool_ = blocking_pool;
 127   }
 128   void set_disable_cache(bool disable_cache) { disable_cache_ = disable_cache; }
 129   // Sets a Loader to be used for a specific url.
 130   void SetLoaderForURL(scoped_ptr<ApplicationLoader> loader, const GURL& url);
 131   // Sets a Loader to be used for a specific url scheme.
 132   void SetLoaderForScheme(scoped_ptr<ApplicationLoader> loader,
 133                           const std::string& scheme);
 134   // These options will be used in running any native application at |url|
 135   // (which shouldn't contain a query string). (|url| will be mapped and
 136   // resolved, and any application whose base resolved URL matches it will have
 137   // |options| applied.)
 138   // TODO(vtl): This may not do what's desired if the resolved URL results in an
 139   // HTTP redirect. Really, we want options to be identified with a particular
 140   // implementation, maybe via a signed manifest or something like that.
 141   void SetNativeOptionsForURL(const NativeRunnerFactory::Options& options,
 142                               const GURL& url);
 143
 144   // Destroys all Shell-ends of connections established with Applications.
 145   // Applications connected by this ApplicationManager will observe pipe errors
 146   // and have a chance to shutdown.
 147   void TerminateShellConnections();
 148
 149   // Removes a ApplicationInstance when it encounters an error.
 150   void OnApplicationInstanceError(ApplicationInstance* instance);
 151
 152   // Removes a ContentHandler when its connection is closed.
 153   void OnContentHandlerConnectionClosed(
 154       ContentHandlerConnection* content_handler);
 155
 156  private:
 157   using ApplicationPackagedAlias = std::map<GURL, std::pair<GURL, std::string>>;
 158   using IdentityToApplicationInstanceMap =
 159       std::map<Identity, ApplicationInstance*>;
 160   using MimeTypeToURLMap = std::map<std::string, GURL>;
 161   using SchemeToLoaderMap = std::map<std::string, ApplicationLoader*>;
 162   using URLToContentHandlerMap =
 163       std::map<std::pair<GURL, std::string>, ContentHandlerConnection*>;
 164   using URLToLoaderMap = std::map<GURL, ApplicationLoader*>;
 165   using URLToNativeOptionsMap = std::map<GURL, NativeRunnerFactory::Options>;
 166
 167   bool ConnectToRunningApplication(ApplicationInstance* originator,
 168                                    const GURL& resolved_url,
 169                                    const std::string& qualifier,
 170                                    const GURL& requestor_url,
 171                                    InterfaceRequest<ServiceProvider>* services,
 172                                    ServiceProviderPtr* exposed_services,
 173                                    CapabilityFilterPtr* filter);
 174
 175   bool ConnectToApplicationWithLoader(
 176       ApplicationInstance* originator,
 177       const GURL& requested_url,
 178       const std::string& qualifier,
 179       const GURL& resolved_url,
 180       const GURL& requestor_url,
 181       InterfaceRequest<ServiceProvider>* services,
 182       ServiceProviderPtr* exposed_services,
 183       CapabilityFilterPtr* filter,
 184       const base::Closure& on_application_end,
 185       ApplicationLoader* loader);
 186
 187   InterfaceRequest<Application> RegisterInstance(
 188       ApplicationInstance* originator,
 189       const GURL& app_url,
 190       const std::string& qualifier,
 191       const GURL& requestor_url,
 192       InterfaceRequest<ServiceProvider> services,
 193       ServiceProviderPtr exposed_services,
 194       CapabilityFilterPtr filter,
 195       const base::Closure& on_application_end);
 196
 197   ApplicationInstance* GetApplicationInstance(const GURL& url,
 198                                               const std::string& qualifier);
 199
 200   // Called once |fetcher| has found app. |requested_url| is the url of the
 201   // requested application before any mappings/resolution have been applied.
 202   void HandleFetchCallback(ApplicationInstance* originator,
 203                            const GURL& requested_url,
 204                            const std::string& qualifier,
 205                            const GURL& requestor_url,
 206                            InterfaceRequest<ServiceProvider> services,
 207                            ServiceProviderPtr exposed_services,
 208                            CapabilityFilterPtr filter,
 209                            const base::Closure& on_application_end,
 210                            NativeApplicationCleanup cleanup,
 211                            scoped_ptr<Fetcher> fetcher);
 212
 213   void RunNativeApplication(InterfaceRequest<Application> application_request,
 214                             const NativeRunnerFactory::Options& options,
 215                             NativeApplicationCleanup cleanup,
 216                             scoped_ptr<Fetcher> fetcher,
 217                             const base::FilePath& file_path,
 218                             bool path_exists);
 219
 220   void LoadWithContentHandler(const GURL& content_handler_url,
 221                               const GURL& requestor_url,
 222                               const std::string& qualifier,
 223                               InterfaceRequest<Application> application_request,
 224                               URLResponsePtr url_response);
 225
 226   // Returns the appropriate loader for |url|, or null if there is no loader
 227   // configured for the URL.
 228   ApplicationLoader* GetLoaderForURL(const GURL& url);
 229
 230   void CleanupRunner(NativeRunner* runner);
 231
 232   ScopedMessagePipeHandle ConnectToServiceByName(
 233       const GURL& application_url,
 234       const std::string& interface_name);
 235
 236   Delegate* const delegate_;
 237   // Loader management.
 238   // Loaders are chosen in the order they are listed here.
 239   URLToLoaderMap url_to_loader_;
 240   SchemeToLoaderMap scheme_to_loader_;
 241   scoped_ptr<ApplicationLoader> default_loader_;
 242   scoped_ptr<NativeRunnerFactory> native_runner_factory_;
 243
 244   ApplicationPackagedAlias application_package_alias_;
 245   IdentityToApplicationInstanceMap identity_to_instance_;
 246   URLToContentHandlerMap url_to_content_handler_;
 247   // Note: The keys are URLs after mapping and resolving.
 248   URLToNativeOptionsMap url_to_native_options_;
 249
 250   base::SequencedWorkerPool* blocking_pool_;
 251   URLLoaderFactoryPtr url_loader_factory_;
 252   updater::UpdaterPtr updater_;
 253   MimeTypeToURLMap mime_type_to_url_;
 254   ScopedVector<NativeRunner> native_runners_;
 255   bool disable_cache_;
 256   base::WeakPtrFactory<ApplicationManager> weak_ptr_factory_;
 257
 258   DISALLOW_COPY_AND_ASSIGN(ApplicationManager);
 259 };
 260
 261 }  // namespace shell
 262 }  // namespace mojo
 263
 264 #endif  // SHELL_APPLICATION_MANAGER_APPLICATION_MANAGER_H_