1 // Copyright 2013 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.
5 #include "apps/launcher.h"
7 #include "base/command_line.h"
8 #include "base/file_util.h"
9 #include "base/files/file_path.h"
10 #include "base/logging.h"
11 #include "base/memory/ref_counted.h"
12 #include "base/strings/string_util.h"
13 #include "base/strings/utf_string_conversions.h"
14 #include "chrome/browser/extensions/api/app_runtime/app_runtime_api.h"
15 #include "chrome/browser/extensions/api/file_handlers/app_file_handler_util.h"
16 #include "chrome/browser/extensions/api/file_system/file_system_api.h"
17 #include "chrome/browser/extensions/event_router.h"
18 #include "chrome/browser/extensions/extension_host.h"
19 #include "chrome/browser/extensions/extension_prefs.h"
20 #include "chrome/browser/extensions/extension_process_manager.h"
21 #include "chrome/browser/extensions/extension_service.h"
22 #include "chrome/browser/extensions/extension_system.h"
23 #include "chrome/browser/extensions/lazy_background_task_queue.h"
24 #include "chrome/browser/profiles/profile.h"
25 #include "chrome/browser/ui/apps/app_metro_infobar_delegate_win.h"
26 #include "chrome/common/extensions/api/app_runtime.h"
27 #include "chrome/common/extensions/extension.h"
28 #include "chrome/common/extensions/extension_messages.h"
29 #include "content/public/browser/browser_thread.h"
30 #include "content/public/browser/render_process_host.h"
31 #include "content/public/browser/web_contents.h"
32 #include "net/base/mime_util.h"
33 #include "net/base/net_util.h"
36 #if defined(OS_CHROMEOS)
37 #include "chrome/browser/chromeos/drive/file_errors.h"
38 #include "chrome/browser/chromeos/drive/file_system_interface.h"
39 #include "chrome/browser/chromeos/drive/file_system_util.h"
43 #include "win8/util/win8_util.h"
46 namespace app_runtime
= extensions::api::app_runtime
;
48 using content::BrowserThread
;
49 using extensions::app_file_handler_util::CheckWritableFiles
;
50 using extensions::app_file_handler_util::FileHandlerForId
;
51 using extensions::app_file_handler_util::FileHandlerCanHandleFile
;
52 using extensions::app_file_handler_util::FirstFileHandlerForFile
;
53 using extensions::app_file_handler_util::CreateFileEntry
;
54 using extensions::app_file_handler_util::GrantedFileEntry
;
55 using extensions::app_file_handler_util::HasFileSystemWritePermission
;
56 using extensions::Extension
;
57 using extensions::ExtensionHost
;
58 using extensions::ExtensionSystem
;
64 const char kFallbackMimeType
[] = "application/octet-stream";
66 bool MakePathAbsolute(const base::FilePath
& current_directory
,
67 base::FilePath
* file_path
) {
69 if (file_path
->IsAbsolute())
72 if (current_directory
.empty()) {
73 *file_path
= base::MakeAbsoluteFilePath(*file_path
);
74 return !file_path
->empty();
77 if (!current_directory
.IsAbsolute())
80 *file_path
= current_directory
.Append(*file_path
);
84 bool GetAbsolutePathFromCommandLine(const CommandLine
* command_line
,
85 const base::FilePath
& current_directory
,
86 base::FilePath
* path
) {
87 if (!command_line
|| !command_line
->GetArgs().size())
90 base::FilePath
relative_path(command_line
->GetArgs()[0]);
91 base::FilePath
absolute_path(relative_path
);
92 if (!MakePathAbsolute(current_directory
, &absolute_path
)) {
93 LOG(WARNING
) << "Cannot make absolute path from " << relative_path
.value();
96 *path
= absolute_path
;
100 // Helper method to launch the platform app |extension| with no data. This
101 // should be called in the fallback case, where it has been impossible to
102 // load or obtain file launch data.
103 void LaunchPlatformAppWithNoData(Profile
* profile
, const Extension
* extension
) {
104 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI
));
105 extensions::AppEventRouter::DispatchOnLaunchedEvent(profile
, extension
);
108 // Class to handle launching of platform apps to open a specific path.
109 // An instance of this class is created for each launch. The lifetime of these
110 // instances is managed by reference counted pointers. As long as an instance
111 // has outstanding tasks on a message queue it will be retained; once all
112 // outstanding tasks are completed it will be deleted.
113 class PlatformAppPathLauncher
114 : public base::RefCountedThreadSafe
<PlatformAppPathLauncher
> {
116 PlatformAppPathLauncher(Profile
* profile
,
117 const Extension
* extension
,
118 const base::FilePath
& file_path
)
119 : profile_(profile
), extension_(extension
), file_path_(file_path
) {}
122 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI
));
123 if (file_path_
.empty()) {
124 LaunchPlatformAppWithNoData(profile_
, extension_
);
128 DCHECK(file_path_
.IsAbsolute());
130 if (HasFileSystemWritePermission(extension_
)) {
131 std::vector
<base::FilePath
> paths
;
132 paths
.push_back(file_path_
);
137 base::Bind(&PlatformAppPathLauncher::OnFileValid
, this),
138 base::Bind(&PlatformAppPathLauncher::OnFileInvalid
, this));
145 void LaunchWithHandler(const std::string
& handler_id
) {
146 handler_id_
= handler_id
;
151 friend class base::RefCountedThreadSafe
<PlatformAppPathLauncher
>;
153 virtual ~PlatformAppPathLauncher() {}
156 #if defined(OS_CHROMEOS)
157 if (drive::util::IsUnderDriveMountPoint(file_path_
)) {
158 PlatformAppPathLauncher::GetMimeTypeAndLaunchForDriveFile();
163 BrowserThread::PostTask(
166 base::Bind(&PlatformAppPathLauncher::GetMimeTypeAndLaunch
, this));
169 void OnFileInvalid(const base::FilePath
& /* error_path */) {
170 LaunchWithNoLaunchData();
173 void GetMimeTypeAndLaunch() {
174 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
176 // If the file doesn't exist, or is a directory, launch with no launch data.
177 if (!base::PathExists(file_path_
) ||
178 base::DirectoryExists(file_path_
)) {
179 LOG(WARNING
) << "No file exists with path " << file_path_
.value();
180 BrowserThread::PostTask(BrowserThread::UI
, FROM_HERE
, base::Bind(
181 &PlatformAppPathLauncher::LaunchWithNoLaunchData
, this));
185 std::string mime_type
;
186 if (!net::GetMimeTypeFromFile(file_path_
, &mime_type
))
187 mime_type
= kFallbackMimeType
;
189 BrowserThread::PostTask(BrowserThread::UI
, FROM_HERE
, base::Bind(
190 &PlatformAppPathLauncher::LaunchWithMimeType
, this, mime_type
));
193 #if defined(OS_CHROMEOS)
194 void GetMimeTypeAndLaunchForDriveFile() {
195 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI
));
197 drive::FileSystemInterface
* file_system
=
198 drive::util::GetFileSystemByProfile(profile_
);
200 LaunchWithNoLaunchData();
204 file_system
->GetFileByPath(
205 drive::util::ExtractDrivePath(file_path_
),
206 base::Bind(&PlatformAppPathLauncher::OnGotDriveFile
, this));
209 void OnGotDriveFile(drive::FileError error
,
210 const base::FilePath
& file_path
,
211 scoped_ptr
<drive::ResourceEntry
> entry
) {
212 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI
));
214 if (error
!= drive::FILE_ERROR_OK
||
215 !entry
|| entry
->file_specific_info().is_hosted_document()) {
216 LaunchWithNoLaunchData();
220 const std::string
& mime_type
=
221 entry
->file_specific_info().content_mime_type();
222 LaunchWithMimeType(mime_type
.empty() ? kFallbackMimeType
: mime_type
);
224 #endif // defined(OS_CHROMEOS)
226 void LaunchWithNoLaunchData() {
227 // This method is required as an entry point on the UI thread.
228 LaunchPlatformAppWithNoData(profile_
, extension_
);
231 void LaunchWithMimeType(const std::string
& mime_type
) {
232 // Find file handler from the platform app for the file being opened.
233 const extensions::FileHandlerInfo
* handler
= NULL
;
234 if (!handler_id_
.empty())
235 handler
= FileHandlerForId(*extension_
, handler_id_
);
237 handler
= FirstFileHandlerForFile(*extension_
, mime_type
, file_path_
);
238 if (handler
&& !FileHandlerCanHandleFile(*handler
, mime_type
, file_path_
)) {
239 LOG(WARNING
) << "Extension does not provide a valid file handler for "
240 << file_path_
.value();
241 LaunchWithNoLaunchData();
245 // If this app doesn't have a file handler that supports the file, launch
246 // with no launch data.
248 LOG(WARNING
) << "Extension does not provide a valid file handler for "
249 << file_path_
.value();
250 LaunchWithNoLaunchData();
254 if (handler_id_
.empty())
255 handler_id_
= handler
->id
;
257 // Access needs to be granted to the file for the process associated with
258 // the extension. To do this the ExtensionHost is needed. This might not be
259 // available, or it might be in the process of being unloaded, in which case
260 // the lazy background task queue is used to load the extension and then
262 extensions::LazyBackgroundTaskQueue
* queue
=
263 ExtensionSystem::Get(profile_
)->lazy_background_task_queue();
264 if (queue
->ShouldEnqueueTask(profile_
, extension_
)) {
265 queue
->AddPendingTask(profile_
, extension_
->id(), base::Bind(
266 &PlatformAppPathLauncher::GrantAccessToFileAndLaunch
,
271 ExtensionProcessManager
* process_manager
=
272 ExtensionSystem::Get(profile_
)->process_manager();
273 ExtensionHost
* host
=
274 process_manager
->GetBackgroundHostForExtension(extension_
->id());
276 GrantAccessToFileAndLaunch(mime_type
, host
);
279 void GrantAccessToFileAndLaunch(const std::string
& mime_type
,
280 ExtensionHost
* host
) {
281 // If there was an error loading the app page, |host| will be NULL.
283 LOG(ERROR
) << "Could not load app page for " << extension_
->id();
287 GrantedFileEntry file_entry
=
288 CreateFileEntry(profile_
,
290 host
->render_process_host()->GetID(),
293 extensions::AppEventRouter::DispatchOnLaunchedEventWithFileEntry(
294 profile_
, extension_
, handler_id_
, mime_type
, file_entry
);
297 // The profile the app should be run in.
299 // The extension providing the app.
300 const Extension
* extension_
;
301 // The path to be passed through to the app.
302 const base::FilePath file_path_
;
303 // The ID of the file handler used to launch the app.
304 std::string handler_id_
;
306 DISALLOW_COPY_AND_ASSIGN(PlatformAppPathLauncher
);
311 void LaunchPlatformAppWithCommandLine(Profile
* profile
,
312 const Extension
* extension
,
313 const CommandLine
* command_line
,
314 const base::FilePath
& current_directory
) {
316 // On Windows 8's single window Metro mode we can not launch platform apps.
317 // Offer to switch Chrome to desktop mode.
318 if (win8::IsSingleWindowMetroMode()) {
319 AppMetroInfoBarDelegateWin::Create(
320 profile
, AppMetroInfoBarDelegateWin::LAUNCH_PACKAGED_APP
,
327 if (!GetAbsolutePathFromCommandLine(command_line
, current_directory
, &path
)) {
328 LaunchPlatformAppWithNoData(profile
, extension
);
332 // TODO(benwells): add a command-line argument to provide a handler ID.
333 LaunchPlatformAppWithPath(profile
, extension
, path
);
336 void LaunchPlatformAppWithPath(Profile
* profile
,
337 const Extension
* extension
,
338 const base::FilePath
& file_path
) {
339 // launcher will be freed when nothing has a reference to it. The message
340 // queue will retain a reference for any outstanding task, so when the
341 // launcher has finished it will be freed.
342 scoped_refptr
<PlatformAppPathLauncher
> launcher
=
343 new PlatformAppPathLauncher(profile
, extension
, file_path
);
347 void LaunchPlatformApp(Profile
* profile
, const Extension
* extension
) {
348 LaunchPlatformAppWithCommandLine(profile
, extension
, NULL
, base::FilePath());
351 void LaunchPlatformAppWithFileHandler(Profile
* profile
,
352 const Extension
* extension
,
353 const std::string
& handler_id
,
354 const base::FilePath
& file_path
) {
355 scoped_refptr
<PlatformAppPathLauncher
> launcher
=
356 new PlatformAppPathLauncher(profile
, extension
, file_path
);
357 launcher
->LaunchWithHandler(handler_id
);
360 void RestartPlatformApp(Profile
* profile
, const Extension
* extension
) {
362 // On Windows 8's single window Metro mode we can not launch platform apps.
363 // In restart we are just making sure launch doesn't slip through.
364 if (win8::IsSingleWindowMetroMode())
367 extensions::EventRouter
* event_router
=
368 ExtensionSystem::Get(profile
)->event_router();
369 bool listening_to_restart
= event_router
->
370 ExtensionHasEventListener(extension
->id(),
371 app_runtime::OnRestarted::kEventName
);
373 if (listening_to_restart
) {
374 extensions::AppEventRouter::DispatchOnRestartedEvent(profile
, extension
);
378 extensions::ExtensionPrefs
* extension_prefs
= ExtensionSystem::Get(profile
)->
379 extension_service()->extension_prefs();
380 bool had_windows
= extension_prefs
->IsActive(extension
->id());
381 extension_prefs
->SetIsActive(extension
->id(), false);
382 bool listening_to_launch
= event_router
->
383 ExtensionHasEventListener(extension
->id(),
384 app_runtime::OnLaunched::kEventName
);
386 if (listening_to_launch
&& had_windows
)
387 LaunchPlatformAppWithNoData(profile
, extension
);
390 void LaunchPlatformAppWithUrl(Profile
* profile
,
391 const Extension
* extension
,
392 const std::string
& handler_id
,
394 const GURL
& referrer_url
) {
395 extensions::AppEventRouter::DispatchOnLaunchedEventWithUrl(
396 profile
, extension
, handler_id
, url
, referrer_url
);