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.
4
5 #include "chrome/browser/chromeos/file_manager/path_util.h"
6
7 #include <memory>
8 #include <utility>
9
10 #include "base/barrier_closure.h"
11 #include "base/base64.h"
12 #include "base/bind.h"
13 #include "base/check_op.h"
14 #include "base/strings/string_util.h"
15 #include "base/strings/stringprintf.h"
16 #include "base/system/sys_info.h"
17 #include "chrome/browser/chromeos/arc/fileapi/arc_content_file_system_url_util.h"
18 #include "chrome/browser/chromeos/arc/fileapi/arc_documents_provider_root.h"
19 #include "chrome/browser/chromeos/arc/fileapi/arc_documents_provider_root_map.h"
20 #include "chrome/browser/chromeos/arc/fileapi/chrome_content_provider_url_util.h"
21 #include "chrome/browser/chromeos/crostini/crostini_manager.h"
22 #include "chrome/browser/chromeos/crostini/crostini_util.h"
23 #include "chrome/browser/chromeos/drive/drive_integration_service.h"
24 #include "chrome/browser/chromeos/drive/file_system_util.h"
25 #include "chrome/browser/chromeos/fileapi/external_file_url_util.h"
26 #include "chrome/browser/chromeos/fileapi/file_system_backend.h"
27 #include "chrome/browser/chromeos/guest_os/guest_os_share_path.h"
28 #include "chrome/browser/chromeos/profiles/profile_helper.h"
29 #include "chrome/browser/chromeos/smb_client/smb_service.h"
30 #include "chrome/browser/chromeos/smb_client/smb_service_factory.h"
31 #include "chrome/browser/chromeos/smb_client/smbfs_share.h"
32 #include "chrome/browser/download/download_dir_util.h"
33 #include "chrome/browser/download/download_prefs.h"
34 #include "chrome/browser/profiles/profile.h"
35 #include "chromeos/constants/chromeos_features.h"
36 #include "chromeos/disks/disk.h"
37 #include "chromeos/disks/disk_mount_manager.h"
38 #include "components/arc/arc_util.h"
39 #include "components/drive/file_system_core_util.h"
40 #include "components/user_manager/user.h"
41 #include "components/user_manager/user_manager.h"
42 #include "content/public/browser/browser_thread.h"
43 #include "net/base/escape.h"
44 #include "net/base/filename_util.h"
45 #include "storage/browser/file_system/external_mount_points.h"
46 #include "ui/base/l10n/l10n_util.h"
47 #include "ui/chromeos/strings/grit/ui_chromeos_strings.h"
48 #include "url/gurl.h"
49
50 namespace file_manager {
51 namespace util {
52
53 namespace {
54
55 constexpr char kAndroidFilesMountPointName[] = "android_files";
56 constexpr char kCrostiniMapGoogleDrive[] = "GoogleDrive";
57 constexpr char kCrostiniMapLinuxFiles[] = "LinuxFiles";
58 constexpr char kCrostiniMapMyDrive[] = "MyDrive";
59 constexpr char kCrostiniMapPlayFiles[] = "PlayFiles";
60 constexpr char kCrostiniMapSmbFs[] = "SMB";
61 constexpr char kCrostiniMapTeamDrives[] = "SharedDrives";
62 constexpr char kFolderNameDownloads[] = "Downloads";
63 constexpr char kFolderNameMyFiles[] = "MyFiles";
64 constexpr char kDisplayNameGoogleDrive[] = "Google Drive";
65 constexpr char kDriveFsDirComputers[] = "Computers";
66 constexpr char kDriveFsDirRoot[] = "root";
67 constexpr char kDriveFsDirTeamDrives[] = "team_drives";
68
69 // Sync with the root name defined with the file provider in ARC++ side.
70 constexpr base::FilePath::CharType kArcDownloadRoot[] =
71 FILE_PATH_LITERAL("/download");
72 constexpr base::FilePath::CharType kArcExternalFilesRoot[] =
73 FILE_PATH_LITERAL("/external_files");
74 // Sync with the volume provider in ARC++ side.
75 constexpr char kArcRemovableMediaContentUrlPrefix[] =
76 "content://org.chromium.arc.volumeprovider/";
77 // The dummy UUID of the MyFiles volume is taken from
78 // components/arc/volume_mounter/arc_volume_mounter_bridge.cc.
79 // TODO(crbug.com/929031): Move MyFiles constants to a common place.
80 constexpr char kArcMyFilesContentUrlPrefix[] =
81 "content://org.chromium.arc.volumeprovider/"
82 "0000000000000000000000000000CAFEF00D2019/";
83 constexpr char kArcDriveContentUrlPrefix[] =
84 "content://org.chromium.arc.volumeprovider/MyDrive/";
85
GetPrimaryProfile()86 Profile* GetPrimaryProfile() {
87 if (!user_manager::UserManager::IsInitialized())
88 return nullptr;
89 const auto* primary_user = user_manager::UserManager::Get()->GetPrimaryUser();
90 if (!primary_user)
91 return nullptr;
92 return chromeos::ProfileHelper::Get()->GetProfileByUser(primary_user);
93 }
94
95 // Helper function for |ConvertToContentUrls|.
OnSingleContentUrlResolved(const base::RepeatingClosure & barrier_closure,std::vector<GURL> * out_urls,size_t index,const GURL & url)96 void OnSingleContentUrlResolved(const base::RepeatingClosure& barrier_closure,
97 std::vector<GURL>* out_urls,
98 size_t index,
99 const GURL& url) {
100 (*out_urls)[index] = url;
101 barrier_closure.Run();
102 }
103
104 // Helper function for |ConvertToContentUrls|.
OnAllContentUrlsResolved(ConvertToContentUrlsCallback callback,std::unique_ptr<std::vector<GURL>> urls)105 void OnAllContentUrlsResolved(ConvertToContentUrlsCallback callback,
106 std::unique_ptr<std::vector<GURL>> urls) {
107 std::move(callback).Run(*urls);
108 }
109
110 // On non-ChromeOS system (test+development), the primary profile uses
111 // $HOME/Downloads for ease access to local files for debugging.
ShouldMountPrimaryUserDownloads(Profile * profile)112 bool ShouldMountPrimaryUserDownloads(Profile* profile) {
113 if (!base::SysInfo::IsRunningOnChromeOS() &&
114 user_manager::UserManager::IsInitialized()) {
115 const user_manager::User* const user =
116 chromeos::ProfileHelper::Get()->GetUserByProfile(
117 profile->GetOriginalProfile());
118 const user_manager::User* const primary_user =
119 user_manager::UserManager::Get()->GetPrimaryUser();
120 return user == primary_user;
121 }
122
123 return false;
124 }
125
126 // Extracts the Drive path from the given path located under the legacy Drive
127 // mount point. Returns an empty path if |path| is not under the legacy Drive
128 // mount point.
129 // Example: ExtractLegacyDrivePath("/special/drive-xxx/foo.txt") =>
130 // "drive/foo.txt"
ExtractLegacyDrivePath(const base::FilePath & path)131 base::FilePath ExtractLegacyDrivePath(const base::FilePath& path) {
132 std::vector<base::FilePath::StringType> components;
133 path.GetComponents(&components);
134 if (components.size() < 3)
135 return base::FilePath();
136 if (components[0] != FILE_PATH_LITERAL("/"))
137 return base::FilePath();
138 if (components[1] != FILE_PATH_LITERAL("special"))
139 return base::FilePath();
140 static const base::FilePath::CharType kPrefix[] = FILE_PATH_LITERAL("drive");
141 if (components[2].compare(0, base::size(kPrefix) - 1, kPrefix) != 0)
142 return base::FilePath();
143
144 base::FilePath drive_path = drive::util::GetDriveGrandRootPath();
145 for (size_t i = 3; i < components.size(); ++i)
146 drive_path = drive_path.Append(components[i]);
147 return drive_path;
148 }
149
150 // Extracts the volume name of a removable device. |relative_path| is expected
151 // to be of the form <volume name>/..., which is relative to /media/removable.
ExtractVolumeNameFromRelativePathForRemovableMedia(const base::FilePath & relative_path)152 std::string ExtractVolumeNameFromRelativePathForRemovableMedia(
153 const base::FilePath& relative_path) {
154 std::vector<base::FilePath::StringType> components;
155 relative_path.GetComponents(&components);
156 if (components.empty()) {
157 LOG(WARNING) << "Failed to extract volume name from relative path: "
158 << relative_path;
159 return std::string();
160 }
161 return components[0];
162 }
163
164 // Returns the source path of a removable device using its volume name as a key.
165 // An empty string is returned when it fails to get a valid mount point from
166 // DiskMountManager.
GetSourcePathForRemovableMedia(const std::string & volume_name)167 std::string GetSourcePathForRemovableMedia(const std::string& volume_name) {
168 const std::string mount_path(
169 base::StringPrintf("%s/%s", kRemovableMediaPath, volume_name.c_str()));
170 const auto& mount_points =
171 chromeos::disks::DiskMountManager::GetInstance()->mount_points();
172 const auto found = mount_points.find(mount_path);
173 return found == mount_points.end() ? std::string()
174 : found->second.source_path;
175 }
176
177 // Returns the UUID of a removable device using its volume name as a key.
178 // An empty string is returned when it fails to get valid source path and disk
179 // from DiskMountManager.
GetFsUuidForRemovableMedia(const std::string & volume_name)180 std::string GetFsUuidForRemovableMedia(const std::string& volume_name) {
181 const std::string source_path = GetSourcePathForRemovableMedia(volume_name);
182 if (source_path.empty()) {
183 LOG(WARNING) << "No source path is found for volume name: " << volume_name;
184 return std::string();
185 }
186 const chromeos::disks::Disk* disk =
187 chromeos::disks::DiskMountManager::GetInstance()->FindDiskBySourcePath(
188 source_path);
189 std::string fs_uuid = disk == nullptr ? std::string() : disk->fs_uuid();
190 if (fs_uuid.empty())
191 LOG(WARNING) << "No UUID is found for volume name: " << volume_name;
192 return fs_uuid;
193 }
194
195 // Same as parent.AppendRelativePath(child, path) except that it allows
196 // parent == child, in which case path is unchanged.
AppendRelativePath(const base::FilePath & parent,const base::FilePath & child,base::FilePath * path)197 bool AppendRelativePath(const base::FilePath& parent,
198 const base::FilePath& child,
199 base::FilePath* path) {
200 return child == parent || parent.AppendRelativePath(child, path);
201 }
202
203 } // namespace
204
205 const base::FilePath::CharType kRemovableMediaPath[] =
206 FILE_PATH_LITERAL("/media/removable");
207
208 const base::FilePath::CharType kAndroidFilesPath[] =
209 FILE_PATH_LITERAL("/run/arc/sdcard/write/emulated/0");
210
211 const base::FilePath::CharType kSystemFontsPath[] =
212 FILE_PATH_LITERAL("/usr/share/fonts");
213
214 const base::FilePath::CharType kArchiveMountPath[] =
215 FILE_PATH_LITERAL("/media/archive");
216
GetDownloadsFolderForProfile(Profile * profile)217 base::FilePath GetDownloadsFolderForProfile(Profile* profile) {
218 // Check if FilesApp has a registered path already. This happens for tests.
219 const std::string mount_point_name =
220 util::GetDownloadsMountPointName(profile);
221 storage::ExternalMountPoints* const mount_points =
222 storage::ExternalMountPoints::GetSystemInstance();
223 base::FilePath path;
224 if (mount_points->GetRegisteredPath(mount_point_name, &path))
225 return path.AppendASCII(kFolderNameDownloads);
226
227 // Return $HOME/Downloads as Download folder.
228 if (ShouldMountPrimaryUserDownloads(profile))
229 return DownloadPrefs::GetDefaultDownloadDirectory();
230
231 // Return <cryptohome>/MyFiles/Downloads if it feature is enabled.
232 return profile->GetPath()
233 .AppendASCII(kFolderNameMyFiles)
234 .AppendASCII(kFolderNameDownloads);
235 }
236
GetMyFilesFolderForProfile(Profile * profile)237 base::FilePath GetMyFilesFolderForProfile(Profile* profile) {
238 // Check if FilesApp has a registered path already. This happens for tests.
239 const std::string mount_point_name =
240 util::GetDownloadsMountPointName(profile);
241 storage::ExternalMountPoints* const mount_points =
242 storage::ExternalMountPoints::GetSystemInstance();
243 base::FilePath path;
244 if (mount_points->GetRegisteredPath(mount_point_name, &path))
245 return path;
246
247 // Return $HOME/Downloads as MyFiles folder.
248 if (ShouldMountPrimaryUserDownloads(profile))
249 return DownloadPrefs::GetDefaultDownloadDirectory();
250
251 // Return <cryptohome>/MyFiles.
252 return profile->GetPath().AppendASCII(kFolderNameMyFiles);
253 }
254
GetAndroidFilesPath()255 base::FilePath GetAndroidFilesPath() {
256 // Check if Android has a registered path already. This happens for tests.
257 const std::string mount_point_name = util::GetAndroidFilesMountPointName();
258 storage::ExternalMountPoints* const mount_points =
259 storage::ExternalMountPoints::GetSystemInstance();
260 base::FilePath path;
261 if (mount_points->GetRegisteredPath(mount_point_name, &path))
262 return path;
263 return base::FilePath(file_manager::util::kAndroidFilesPath);
264 }
265
MigratePathFromOldFormat(Profile * profile,const base::FilePath & old_base,const base::FilePath & old_path,base::FilePath * new_path)266 bool MigratePathFromOldFormat(Profile* profile,
267 const base::FilePath& old_base,
268 const base::FilePath& old_path,
269 base::FilePath* new_path) {
270 const base::FilePath new_base = GetMyFilesFolderForProfile(profile);
271
272 // Special case, migrating /home/chronos/user which is set early (before a
273 // profile is attached to the browser process) to default to
274 // /home/chronos/u-{hash}/MyFiles/Downloads.
275 if (old_path == old_base &&
276 old_path == base::FilePath("/home/chronos/user")) {
277 *new_path = GetDownloadsFolderForProfile(profile);
278 return true;
279 }
280
281 base::FilePath relative;
282 if (old_base.AppendRelativePath(old_path, &relative)) {
283 *new_path = new_base.Append(relative);
284 return old_path != *new_path;
285 }
286
287 return false;
288 }
289
MigrateFromDownloadsToMyFiles(Profile * profile,const base::FilePath & old_path,base::FilePath * new_path)290 bool MigrateFromDownloadsToMyFiles(Profile* profile,
291 const base::FilePath& old_path,
292 base::FilePath* new_path) {
293 const base::FilePath old_base =
294 profile->GetPath().Append(kFolderNameDownloads);
295 const base::FilePath new_base = GetDownloadsFolderForProfile(profile);
296 if (new_base == old_base)
297 return false;
298 base::FilePath relative;
299 if (AppendRelativePath(old_base, old_path, &relative)) {
300 *new_path = new_base.Append(relative);
301 return old_path != *new_path;
302 }
303 return false;
304 }
305
MigrateToDriveFs(Profile * profile,const base::FilePath & old_path,base::FilePath * new_path)306 bool MigrateToDriveFs(Profile* profile,
307 const base::FilePath& old_path,
308 base::FilePath* new_path) {
309 const auto* user = chromeos::ProfileHelper::Get()->GetUserByProfile(profile);
310 auto* integration_service =
311 drive::DriveIntegrationServiceFactory::FindForProfile(profile);
312 if (!integration_service || !integration_service->is_enabled() || !user ||
313 !user->GetAccountId().HasAccountIdKey()) {
314 return false;
315 }
316 *new_path = integration_service->GetMountPointPath();
317 return drive::util::GetDriveGrandRootPath().AppendRelativePath(
318 ExtractLegacyDrivePath(old_path), new_path);
319 }
320
GetDownloadsMountPointName(Profile * profile)321 std::string GetDownloadsMountPointName(Profile* profile) {
322 // To distinguish profiles in multi-profile session, we append user name hash
323 // to "Downloads". Note that some profiles (like login or test profiles)
324 // are not associated with an user account. In that case, no suffix is added
325 // because such a profile never belongs to a multi-profile session.
326 const user_manager::User* const user =
327 user_manager::UserManager::IsInitialized()
328 ? chromeos::ProfileHelper::Get()->GetUserByProfile(
329 profile->GetOriginalProfile())
330 : nullptr;
331 const std::string id = user ? "-" + user->username_hash() : "";
332 return net::EscapeQueryParamValue(kFolderNameDownloads + id, false);
333 }
334
GetAndroidFilesMountPointName()335 const std::string GetAndroidFilesMountPointName() {
336 return kAndroidFilesMountPointName;
337 }
338
GetCrostiniMountPointName(Profile * profile)339 std::string GetCrostiniMountPointName(Profile* profile) {
340 // crostini_<hash>_termina_penguin
341 return base::JoinString(
342 {"crostini", crostini::CryptohomeIdForProfile(profile),
343 crostini::kCrostiniDefaultVmName,
344 crostini::kCrostiniDefaultContainerName},
345 "_");
346 }
347
GetCrostiniMountDirectory(Profile * profile)348 base::FilePath GetCrostiniMountDirectory(Profile* profile) {
349 return base::FilePath("/media/fuse/" + GetCrostiniMountPointName(profile));
350 }
351
GetCrostiniMountOptions(const std::string & hostname,const std::string & host_private_key,const std::string & container_public_key)352 std::vector<std::string> GetCrostiniMountOptions(
353 const std::string& hostname,
354 const std::string& host_private_key,
355 const std::string& container_public_key) {
356 const std::string port = "2222";
357 std::vector<std::string> options;
358 std::string base64_known_hosts;
359 std::string base64_identity;
360 base::Base64Encode(host_private_key, &base64_identity);
361 base::Base64Encode(
362 base::StringPrintf("[%s]:%s %s", hostname.c_str(), port.c_str(),
363 container_public_key.c_str()),
364 &base64_known_hosts);
365 options.push_back("UserKnownHostsBase64=" + base64_known_hosts);
366 options.push_back("IdentityBase64=" + base64_identity);
367 options.push_back("Port=" + port);
368 return options;
369 }
370
ConvertFileSystemURLToPathInsideVM(Profile * profile,const storage::FileSystemURL & file_system_url,const base::FilePath & vm_mount,bool map_crostini_home,base::FilePath * inside)371 bool ConvertFileSystemURLToPathInsideVM(
372 Profile* profile,
373 const storage::FileSystemURL& file_system_url,
374 const base::FilePath& vm_mount,
375 bool map_crostini_home,
376 base::FilePath* inside) {
377 const std::string& id(file_system_url.mount_filesystem_id());
378 // File system root requires strip trailing separator.
379 base::FilePath path =
380 base::FilePath(file_system_url.virtual_path()).StripTrailingSeparators();
381 // Include drive if using DriveFS.
382 std::string mount_point_name_drive;
383 auto* integration_service =
384 drive::DriveIntegrationServiceFactory::FindForProfile(profile);
385 if (integration_service) {
386 mount_point_name_drive =
387 integration_service->GetMountPointPath().BaseName().value();
388 }
389
390 // Reformat virtual_path() from:
391 // <mount_label>/path/to/file
392 // To:
393 // <vm_mount>/<mapping>/path/to/file
394 // If |map_crostini_home| is set, paths in crostini mount map to:
395 // /<home-directory>/path/to/file
396 base::FilePath base_to_exclude(id);
397 if (id == GetDownloadsMountPointName(profile)) {
398 // MyFiles.
399 *inside = vm_mount.Append(kFolderNameMyFiles);
400 } else if (!mount_point_name_drive.empty() && id == mount_point_name_drive) {
401 // DriveFS has some more complicated mappings.
402 std::vector<base::FilePath::StringType> components;
403 path.GetComponents(&components);
404 *inside = vm_mount.Append(kCrostiniMapGoogleDrive);
405 if (components.size() >= 2 && components[1] == kDriveFsDirRoot) {
406 // root -> MyDrive.
407 base_to_exclude = base_to_exclude.Append(kDriveFsDirRoot);
408 *inside = inside->Append(kCrostiniMapMyDrive);
409 } else if (components.size() >= 2 &&
410 components[1] == kDriveFsDirTeamDrives) {
411 // team_drives -> SharedDrives.
412 base_to_exclude = base_to_exclude.Append(kDriveFsDirTeamDrives);
413 *inside = inside->Append(kCrostiniMapTeamDrives);
414 }
415 // Computers -> Computers
416 } else if (id == chromeos::kSystemMountNameRemovable) {
417 // Removable.
418 *inside = vm_mount.Append(chromeos::kSystemMountNameRemovable);
419 } else if (id == GetAndroidFilesMountPointName()) {
420 // PlayFiles.
421 *inside = vm_mount.Append(kCrostiniMapPlayFiles);
422 } else if (id == chromeos::kSystemMountNameArchive) {
423 // Archive.
424 *inside = vm_mount.Append(chromeos::kSystemMountNameArchive);
425 } else if (id == GetCrostiniMountPointName(profile)) {
426 // Crostini.
427 if (map_crostini_home) {
428 base::Optional<crostini::ContainerInfo> container_info =
429 crostini::CrostiniManager::GetForProfile(profile)->GetContainerInfo(
430 crostini::ContainerId::GetDefault());
431 if (!container_info) {
432 return false;
433 }
434 *inside = container_info->homedir;
435 } else {
436 *inside = vm_mount.Append(kCrostiniMapLinuxFiles);
437 }
438 } else if (file_system_url.type() == storage::kFileSystemTypeSmbFs) {
439 // SMB. Do not assume the share is currently accessible via SmbService
440 // as this function is called during unmount when SmbFsShare is
441 // destroyed. The only information safely available is the stable
442 // mount ID.
443 *inside = vm_mount.Append(kCrostiniMapSmbFs);
444 *inside = inside->Append(id);
445 } else {
446 return false;
447 }
448 return AppendRelativePath(base_to_exclude, path, inside);
449 }
450
ConvertFileSystemURLToPathInsideCrostini(Profile * profile,const storage::FileSystemURL & file_system_url,base::FilePath * inside)451 bool ConvertFileSystemURLToPathInsideCrostini(
452 Profile* profile,
453 const storage::FileSystemURL& file_system_url,
454 base::FilePath* inside) {
455 return ConvertFileSystemURLToPathInsideVM(
456 profile, file_system_url, crostini::ContainerChromeOSBaseDirectory(),
457 /*map_crostini_home=*/true, inside);
458 }
459
ConvertPathInsideVMToFileSystemURL(Profile * profile,const base::FilePath & inside,const base::FilePath & vm_mount,bool map_crostini_home,storage::FileSystemURL * file_system_url)460 bool ConvertPathInsideVMToFileSystemURL(
461 Profile* profile,
462 const base::FilePath& inside,
463 const base::FilePath& vm_mount,
464 bool map_crostini_home,
465 storage::FileSystemURL* file_system_url) {
466 storage::ExternalMountPoints* mount_points =
467 storage::ExternalMountPoints::GetSystemInstance();
468
469 // Include drive if using DriveFS.
470 std::string mount_point_name_drive;
471 auto* integration_service =
472 drive::DriveIntegrationServiceFactory::FindForProfile(profile);
473 if (integration_service) {
474 mount_point_name_drive =
475 integration_service->GetMountPointPath().BaseName().value();
476 }
477
478 std::string mount_name;
479 base::FilePath path;
480 base::FilePath relative_path;
481
482 if (map_crostini_home) {
483 base::Optional<crostini::ContainerInfo> container_info =
484 crostini::CrostiniManager::GetForProfile(profile)->GetContainerInfo(
485 crostini::ContainerId::GetDefault());
486 if (container_info &&
487 AppendRelativePath(container_info->homedir, inside, &relative_path)) {
488 *file_system_url = mount_points->CreateExternalFileSystemURL(
489 url::Origin(), GetCrostiniMountPointName(profile), relative_path);
490 return file_system_url->is_valid();
491 }
492 }
493
494 if (!vm_mount.AppendRelativePath(inside, &path)) {
495 return false;
496 }
497
498 if (AppendRelativePath(base::FilePath(kFolderNameMyFiles), path,
499 &relative_path)) {
500 // MyFiles.
501 mount_name = GetDownloadsMountPointName(profile);
502 path = relative_path;
503 } else if (AppendRelativePath(base::FilePath(kCrostiniMapLinuxFiles), path,
504 &relative_path)) {
505 // LinuxFiles.
506 mount_name = GetCrostiniMountPointName(profile);
507 path = relative_path;
508 } else if (base::FilePath(kCrostiniMapGoogleDrive)
509 .AppendRelativePath(path, &relative_path)) {
510 mount_name = mount_point_name_drive;
511 path = relative_path;
512 relative_path.clear();
513 // GoogleDrive
514 if (AppendRelativePath(base::FilePath(kCrostiniMapMyDrive), path,
515 &relative_path)) {
516 // Special mapping for /GoogleDrive/MyDrive -> root
517 path = base::FilePath(kDriveFsDirRoot).Append(relative_path);
518 } else if (AppendRelativePath(base::FilePath(kCrostiniMapTeamDrives), path,
519 &relative_path)) {
520 // Special mapping for /GoogleDrive/SharedDrive -> team_drives
521 path = base::FilePath(kDriveFsDirTeamDrives).Append(relative_path);
522 }
523 // Computers -> Computers
524 } else if (base::FilePath(chromeos::kSystemMountNameRemovable)
525 .AppendRelativePath(path, &relative_path)) {
526 // Removable subdirs only.
527 mount_name = chromeos::kSystemMountNameRemovable;
528 path = relative_path;
529 } else if (AppendRelativePath(base::FilePath(kCrostiniMapPlayFiles), path,
530 &relative_path)) {
531 // PlayFiles.
532 mount_name = GetAndroidFilesMountPointName();
533 path = relative_path;
534 } else if (base::FilePath(chromeos::kSystemMountNameArchive)
535 .AppendRelativePath(path, &relative_path)) {
536 // Archive subdirs only.
537 mount_name = chromeos::kSystemMountNameArchive;
538 path = relative_path;
539 } else if (base::FilePath(kCrostiniMapSmbFs)
540 .AppendRelativePath(path, &relative_path)) {
541 // SMB.
542 std::vector<base::FilePath::StringType> components;
543 relative_path.GetComponents(&components);
544 if (components.size() < 1) {
545 return false;
546 }
547 mount_name = components[0];
548 path.clear();
549 base::FilePath(mount_name).AppendRelativePath(relative_path, &path);
550 } else {
551 return false;
552 }
553
554 *file_system_url = mount_points->CreateExternalFileSystemURL(
555 url::Origin(), mount_name, path);
556 return file_system_url->is_valid();
557 }
558
ConvertPathToArcUrl(const base::FilePath & path,GURL * arc_url_out)559 bool ConvertPathToArcUrl(const base::FilePath& path, GURL* arc_url_out) {
560 DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
561
562 // Obtain the primary profile. This information is required because currently
563 // only the file systems for the primary profile is exposed to ARC.
564 Profile* primary_profile = GetPrimaryProfile();
565 if (!primary_profile)
566 return false;
567
568 // Convert paths under primary profile's Downloads directory.
569 base::FilePath primary_downloads =
570 GetDownloadsFolderForProfile(primary_profile);
571 base::FilePath result_path(kArcDownloadRoot);
572 if (primary_downloads.AppendRelativePath(path, &result_path)) {
573 *arc_url_out = GURL(arc::kFileSystemFileproviderUrl)
574 .Resolve(net::EscapePath(result_path.AsUTF8Unsafe()));
575 return true;
576 }
577
578 // Convert paths under Android files root (/run/arc/sdcard/write/emulated/0).
579 result_path = base::FilePath(kArcExternalFilesRoot);
580 if (base::FilePath(kAndroidFilesPath)
581 .AppendRelativePath(path, &result_path)) {
582 *arc_url_out = GURL(arc::kFileSystemFileproviderUrl)
583 .Resolve(net::EscapePath(result_path.AsUTF8Unsafe()));
584 return true;
585 }
586
587 // Convert paths under /media/removable.
588 base::FilePath relative_path;
589 if (base::FilePath(kRemovableMediaPath)
590 .AppendRelativePath(path, &relative_path)) {
591 const std::string volume_name =
592 ExtractVolumeNameFromRelativePathForRemovableMedia(relative_path);
593 if (volume_name.empty())
594 return false;
595 const std::string fs_uuid = GetFsUuidForRemovableMedia(volume_name);
596 if (fs_uuid.empty())
597 return false;
598 // Replace the volume name in the relative path with the UUID.
599 base::FilePath relative_path_with_uuid = base::FilePath(fs_uuid);
600 if (!base::FilePath(volume_name)
601 .AppendRelativePath(relative_path, &relative_path_with_uuid)) {
602 LOG(WARNING) << "Failed to replace volume name \"" << volume_name
603 << "\" in relative path \"" << relative_path
604 << "\" with UUID \"" << fs_uuid << "\"";
605 return false;
606 }
607 *arc_url_out =
608 GURL(kArcRemovableMediaContentUrlPrefix)
609 .Resolve(net::EscapePath(relative_path_with_uuid.AsUTF8Unsafe()));
610 return true;
611 }
612
613 // Convert paths under MyFiles.
614 if (base::FilePath(GetMyFilesFolderForProfile(primary_profile))
615 .AppendRelativePath(path, &relative_path)) {
616 *arc_url_out = GURL(kArcMyFilesContentUrlPrefix)
617 .Resolve(net::EscapePath(relative_path.AsUTF8Unsafe()));
618 return true;
619 }
620
621 bool force_external = false;
622 // Convert paths under DriveFS.
623 const drive::DriveIntegrationService* integration_service =
624 drive::util::GetIntegrationServiceByProfile(primary_profile);
625 if (integration_service &&
626 integration_service->GetMountPointPath().AppendRelativePath(
627 path, &relative_path)) {
628 if (arc::IsArcVmEnabled()) {
629 guest_os::GuestOsSharePath::GetForProfile(primary_profile)
630 ->SharePath(arc::kArcVmName, path, /*persist=*/false,
631 base::DoNothing());
632 *arc_url_out =
633 GURL(kArcDriveContentUrlPrefix)
634 .Resolve(net::EscapePath(relative_path.AsUTF8Unsafe()));
635 return true;
636 } else {
637 // TODO(b/157297349): For backward compatibility with ARC++ P, force
638 // external URL for DriveFS.
639 force_external = true;
640 }
641 }
642
643 // Force external URL for Crostini.
644 if (GetCrostiniMountDirectory(primary_profile)
645 .AppendRelativePath(path, &relative_path)) {
646 force_external = true;
647 }
648
649 // Force external URL for files under /media/archive.
650 if (base::FilePath(kArchiveMountPath)
651 .AppendRelativePath(path, &relative_path)) {
652 force_external = true;
653 }
654
655 // Force external URL for smbfs.
656 chromeos::smb_client::SmbService* smb_service =
657 chromeos::smb_client::SmbServiceFactory::Get(primary_profile);
658 if (smb_service) {
659 chromeos::smb_client::SmbFsShare* share =
660 smb_service->GetSmbFsShareForPath(path);
661 if (share && share->mount_path().AppendRelativePath(path, &relative_path)) {
662 force_external = true;
663 }
664 }
665
666 // Convert paths under /special or other paths forced to use external URL.
667 GURL external_file_url = chromeos::CreateExternalFileURLFromPath(
668 primary_profile, path, force_external);
669
670 if (!external_file_url.is_empty()) {
671 *arc_url_out = arc::EncodeToChromeContentProviderUrl(external_file_url);
672 return true;
673 }
674
675 // TODO(kinaba): Add conversion logic once other file systems are supported.
676 return false;
677 }
678
ConvertToContentUrls(Profile * profile,const std::vector<storage::FileSystemURL> & file_system_urls,ConvertToContentUrlsCallback callback)679 void ConvertToContentUrls(
680 Profile* profile,
681 const std::vector<storage::FileSystemURL>& file_system_urls,
682 ConvertToContentUrlsCallback callback) {
683 DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
684
685 if (file_system_urls.empty()) {
686 std::move(callback).Run(std::vector<GURL>());
687 return;
688 }
689
690 auto* documents_provider_root_map =
691 profile ? arc::ArcDocumentsProviderRootMap::GetForBrowserContext(profile)
692 : nullptr;
693
694 // To keep the original order, prefill |out_urls| with empty URLs and
695 // specify index when updating it like (*out_urls)[index] = url.
696 auto out_urls = std::make_unique<std::vector<GURL>>(file_system_urls.size());
697 auto* out_urls_ptr = out_urls.get();
698 auto barrier = base::BarrierClosure(
699 file_system_urls.size(),
700 base::BindOnce(&OnAllContentUrlsResolved, std::move(callback),
701 std::move(out_urls)));
702 auto single_content_url_callback =
703 base::BindRepeating(&OnSingleContentUrlResolved, barrier, out_urls_ptr);
704
705 for (size_t index = 0; index < file_system_urls.size(); ++index) {
706 const auto& file_system_url = file_system_urls[index];
707
708 // Run DocumentsProvider check before running ConvertPathToArcUrl.
709 // Otherwise, DocumentsProvider file path would be encoded to a
710 // ChromeContentProvider URL (b/132314050).
711 if (documents_provider_root_map) {
712 base::FilePath file_path;
713 auto* documents_provider_root =
714 documents_provider_root_map->ParseAndLookup(file_system_url,
715 &file_path);
716 if (documents_provider_root) {
717 documents_provider_root->ResolveToContentUrl(
718 file_path, base::BindOnce(single_content_url_callback, index));
719 continue;
720 }
721 }
722
723 GURL arc_url;
724 if (file_system_url.mount_type() == storage::kFileSystemTypeExternal &&
725 ConvertPathToArcUrl(file_system_url.path(), &arc_url)) {
726 single_content_url_callback.Run(index, arc_url);
727 continue;
728 }
729
730 single_content_url_callback.Run(index, GURL());
731 }
732 }
733
ConvertToContentUrls(const std::vector<storage::FileSystemURL> & file_system_urls,ConvertToContentUrlsCallback callback)734 void ConvertToContentUrls(
735 const std::vector<storage::FileSystemURL>& file_system_urls,
736 ConvertToContentUrlsCallback callback) {
737 ConvertToContentUrls(GetPrimaryProfile(), file_system_urls,
738 std::move(callback));
739 }
740
ReplacePrefix(std::string * s,const std::string & prefix,const std::string & replacement)741 bool ReplacePrefix(std::string* s,
742 const std::string& prefix,
743 const std::string& replacement) {
744 if (base::StartsWith(*s, prefix, base::CompareCase::SENSITIVE)) {
745 base::ReplaceFirstSubstringAfterOffset(s, 0, prefix, replacement);
746 return true;
747 }
748 return false;
749 }
750
GetPathDisplayTextForSettings(Profile * profile,const std::string & path)751 std::string GetPathDisplayTextForSettings(Profile* profile,
752 const std::string& path) {
753 std::string result(path);
754 auto* drive_integration_service =
755 drive::DriveIntegrationServiceFactory::FindForProfile(profile);
756 if (drive_integration_service && !drive_integration_service->is_enabled()) {
757 drive_integration_service = nullptr;
758 }
759 if (ReplacePrefix(&result, "/home/chronos/user/Downloads",
760 kFolderNameDownloads)) {
761 } else if (ReplacePrefix(&result,
762 "/home/chronos/" +
763 profile->GetPath().BaseName().value() +
764 "/Downloads",
765 kFolderNameDownloads)) {
766 } else if (ReplacePrefix(
767 &result,
768 std::string("/home/chronos/user/") + kFolderNameMyFiles,
769 "My files")) {
770 } else if (ReplacePrefix(&result,
771 "/home/chronos/" +
772 profile->GetPath().BaseName().value() + "/" +
773 kFolderNameMyFiles,
774 "My files")) {
775 } else if (drive_integration_service &&
776 ReplacePrefix(&result,
777 drive_integration_service->GetMountPointPath()
778 .Append(kDriveFsDirRoot)
779 .value(),
780 base::FilePath(kDisplayNameGoogleDrive)
781 .Append(l10n_util::GetStringUTF8(
782 IDS_FILE_BROWSER_DRIVE_MY_DRIVE_LABEL))
783 .value())) {
784 } else if (ReplacePrefix(&result,
785 download_dir_util::kDriveNamePolicyVariableName,
786 base::FilePath(kDisplayNameGoogleDrive)
787 .Append(l10n_util::GetStringUTF8(
788 IDS_FILE_BROWSER_DRIVE_MY_DRIVE_LABEL))
789 .value())) {
790 } else if (drive_integration_service &&
791 ReplacePrefix(&result,
792 drive_integration_service->GetMountPointPath()
793 .Append(kDriveFsDirTeamDrives)
794 .value(),
795 base::FilePath(kDisplayNameGoogleDrive)
796 .Append(l10n_util::GetStringUTF8(
797 IDS_FILE_BROWSER_DRIVE_SHARED_DRIVES_LABEL))
798 .value())) {
799 } else if (drive_integration_service &&
800 ReplacePrefix(&result,
801 drive_integration_service->GetMountPointPath()
802 .Append(kDriveFsDirComputers)
803 .value(),
804 base::FilePath(kDisplayNameGoogleDrive)
805 .Append(l10n_util::GetStringUTF8(
806 IDS_FILE_BROWSER_DRIVE_COMPUTERS_LABEL))
807 .value())) {
808 } else if (ReplacePrefix(&result, kAndroidFilesPath,
809 l10n_util::GetStringUTF8(
810 IDS_FILE_BROWSER_ANDROID_FILES_ROOT_LABEL))) {
811 } else if (ReplacePrefix(&result, GetCrostiniMountDirectory(profile).value(),
812 l10n_util::GetStringUTF8(
813 IDS_FILE_BROWSER_LINUX_FILES_ROOT_LABEL))) {
814 } else if (ReplacePrefix(&result,
815 base::FilePath(kRemovableMediaPath)
816 .AsEndingWithSeparator()
817 .value(),
818 "")) {
819 // Strip prefix of "/media/removable/" including trailing slash.
820 } else if (ReplacePrefix(&result,
821 base::FilePath(kArchiveMountPath)
822 .AsEndingWithSeparator()
823 .value(),
824 "")) {
825 // Strip prefix of "/media/archive/" including trailing slash.
826 }
827
828 base::ReplaceChars(result, "/", " \u203a ", &result);
829 return result;
830 }
831
ExtractMountNameFileSystemNameFullPath(const base::FilePath & absolute_path,std::string * mount_name,std::string * file_system_name,std::string * full_path)832 bool ExtractMountNameFileSystemNameFullPath(const base::FilePath& absolute_path,
833 std::string* mount_name,
834 std::string* file_system_name,
835 std::string* full_path) {
836 DCHECK(absolute_path.IsAbsolute());
837 DCHECK(mount_name);
838 DCHECK(full_path);
839 storage::ExternalMountPoints* mount_points =
840 storage::ExternalMountPoints::GetSystemInstance();
841 base::FilePath virtual_path;
842 if (!mount_points->GetVirtualPath(absolute_path, &virtual_path))
843 return false;
844 // |virtual_path| format is: <mount_name>/<full_path>, and
845 // |file_system_name| == |mount_name|, except for 'removable' and 'archive',
846 // |mount_name| is the first two segments, |file_system_name| is the second.
847 const std::string& value = virtual_path.value();
848 size_t fs_start = 0;
849 size_t slash_pos = value.find(base::FilePath::kSeparators[0]);
850 *mount_name = *file_system_name = value.substr(0, slash_pos);
851 if (*mount_name == chromeos::kSystemMountNameRemovable ||
852 *mount_name == chromeos::kSystemMountNameArchive) {
853 if (slash_pos == std::string::npos) {
854 return false;
855 }
856 fs_start = slash_pos + 1;
857 slash_pos = value.find(base::FilePath::kSeparators[0], fs_start);
858 *mount_name = value.substr(0, slash_pos);
859 }
860
861 // Set full_path to '/' if |absolute_path| is a root.
862 if (slash_pos == std::string::npos) {
863 *file_system_name = value.substr(fs_start);
864 *full_path = "/";
865 } else {
866 *file_system_name = value.substr(fs_start, slash_pos - fs_start);
867 *full_path = value.substr(slash_pos);
868 }
869 return true;
870 }
871
ReplacePathPrefix(const base::FilePath & input,const base::FilePath & old_prefix,const base::FilePath & new_prefix)872 base::FilePath ReplacePathPrefix(const base::FilePath& input,
873 const base::FilePath& old_prefix,
874 const base::FilePath& new_prefix) {
875 if (old_prefix.IsParent(input)) {
876 base::FilePath output = new_prefix;
877 old_prefix.AppendRelativePath(input, &output);
878 return output;
879 }
880 return input;
881 }
882
883 } // namespace util
884 } // namespace file_manager
885