1 // Copyright (c) 2012 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/drive/file_system_util.h"
6
7 #include <string>
8 #include <vector>
9
10 #include "base/basictypes.h"
11 #include "base/bind.h"
12 #include "base/bind_helpers.h"
13 #include "base/files/file_path.h"
14 #include "base/files/file_util.h"
15 #include "base/i18n/icu_string_conversions.h"
16 #include "base/json/json_file_value_serializer.h"
17 #include "base/logging.h"
18 #include "base/memory/scoped_ptr.h"
19 #include "base/message_loop/message_loop_proxy.h"
20 #include "base/prefs/pref_service.h"
21 #include "base/strings/string_number_conversions.h"
22 #include "base/strings/string_util.h"
23 #include "base/strings/stringprintf.h"
24 #include "base/threading/sequenced_worker_pool.h"
25 #include "chrome/browser/browser_process.h"
26 #include "chrome/browser/chromeos/drive/drive.pb.h"
27 #include "chrome/browser/chromeos/drive/drive_integration_service.h"
28 #include "chrome/browser/chromeos/drive/file_system_interface.h"
29 #include "chrome/browser/chromeos/drive/job_list.h"
30 #include "chrome/browser/chromeos/drive/write_on_cache_file.h"
31 #include "chrome/browser/chromeos/profiles/profile_helper.h"
32 #include "chrome/browser/chromeos/profiles/profile_util.h"
33 #include "chrome/browser/profiles/profile.h"
34 #include "chrome/browser/profiles/profile_manager.h"
35 #include "chrome/common/chrome_constants.h"
36 #include "chrome/common/chrome_paths_internal.h"
37 #include "chrome/common/pref_names.h"
38 #include "chromeos/chromeos_constants.h"
39 #include "components/user_manager/user_manager.h"
40 #include "content/public/browser/browser_thread.h"
41 #include "net/base/escape.h"
42 #include "storage/browser/fileapi/file_system_url.h"
43
44 using content::BrowserThread;
45
46 namespace drive {
47 namespace util {
48
49 namespace {
50
ReadStringFromGDocFile(const base::FilePath & file_path,const std::string & key)51 std::string ReadStringFromGDocFile(const base::FilePath& file_path,
52 const std::string& key) {
53 const int64 kMaxGDocSize = 4096;
54 int64 file_size = 0;
55 if (!base::GetFileSize(file_path, &file_size) ||
56 file_size > kMaxGDocSize) {
57 LOG(WARNING) << "File too large to be a GDoc file " << file_path.value();
58 return std::string();
59 }
60
61 JSONFileValueSerializer reader(file_path);
62 std::string error_message;
63 scoped_ptr<base::Value> root_value(reader.Deserialize(NULL, &error_message));
64 if (!root_value) {
65 LOG(WARNING) << "Failed to parse " << file_path.value() << " as JSON."
66 << " error = " << error_message;
67 return std::string();
68 }
69
70 base::DictionaryValue* dictionary_value = NULL;
71 std::string result;
72 if (!root_value->GetAsDictionary(&dictionary_value) ||
73 !dictionary_value->GetString(key, &result)) {
74 LOG(WARNING) << "No value for the given key is stored in "
75 << file_path.value() << ". key = " << key;
76 return std::string();
77 }
78
79 return result;
80 }
81
82 // Returns DriveIntegrationService instance, if Drive is enabled.
83 // Otherwise, NULL.
GetIntegrationServiceByProfile(Profile * profile)84 DriveIntegrationService* GetIntegrationServiceByProfile(Profile* profile) {
85 DriveIntegrationService* service =
86 DriveIntegrationServiceFactory::FindForProfile(profile);
87 if (!service || !service->IsMounted())
88 return NULL;
89 return service;
90 }
91
92 } // namespace
93
GetDriveGrandRootPath()94 const base::FilePath& GetDriveGrandRootPath() {
95 CR_DEFINE_STATIC_LOCAL(base::FilePath, grand_root_path,
96 (kDriveGrandRootDirName));
97 return grand_root_path;
98 }
99
GetDriveMyDriveRootPath()100 const base::FilePath& GetDriveMyDriveRootPath() {
101 CR_DEFINE_STATIC_LOCAL(base::FilePath, drive_root_path,
102 (FILE_PATH_LITERAL("drive/root")));
103 return drive_root_path;
104 }
105
GetDriveMountPointPathForUserIdHash(const std::string user_id_hash)106 base::FilePath GetDriveMountPointPathForUserIdHash(
107 const std::string user_id_hash) {
108 static const base::FilePath::CharType kSpecialMountPointRoot[] =
109 FILE_PATH_LITERAL("/special");
110 static const char kDriveMountPointNameBase[] = "drive";
111 return base::FilePath(kSpecialMountPointRoot).AppendASCII(
112 net::EscapeQueryParamValue(
113 kDriveMountPointNameBase +
114 (user_id_hash.empty() ? "" : "-" + user_id_hash), false));
115 }
116
GetDriveMountPointPath(Profile * profile)117 base::FilePath GetDriveMountPointPath(Profile* profile) {
118 std::string id = chromeos::ProfileHelper::GetUserIdHashFromProfile(profile);
119 if (id.empty() || id == chrome::kLegacyProfileDir) {
120 // ProfileHelper::GetUserIdHashFromProfile works only when multi-profile is
121 // enabled. In that case, we fall back to use UserManager (it basically just
122 // returns currently active users's hash in such a case.) I still try
123 // ProfileHelper first because it works better in tests.
124 user_manager::User* const user =
125 user_manager::UserManager::IsInitialized()
126 ? chromeos::ProfileHelper::Get()->GetUserByProfile(
127 profile->GetOriginalProfile())
128 : NULL;
129 if (user)
130 id = user->username_hash();
131 }
132 return GetDriveMountPointPathForUserIdHash(id);
133 }
134
GetFileSystemByProfile(Profile * profile)135 FileSystemInterface* GetFileSystemByProfile(Profile* profile) {
136 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
137
138 DriveIntegrationService* integration_service =
139 GetIntegrationServiceByProfile(profile);
140 return integration_service ? integration_service->file_system() : NULL;
141 }
142
GetFileSystemByProfileId(void * profile_id)143 FileSystemInterface* GetFileSystemByProfileId(void* profile_id) {
144 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
145
146 // |profile_id| needs to be checked with ProfileManager::IsValidProfile
147 // before using it.
148 Profile* profile = reinterpret_cast<Profile*>(profile_id);
149 if (!g_browser_process->profile_manager()->IsValidProfile(profile))
150 return NULL;
151 return GetFileSystemByProfile(profile);
152 }
153
GetDriveAppRegistryByProfile(Profile * profile)154 DriveAppRegistry* GetDriveAppRegistryByProfile(Profile* profile) {
155 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
156
157 DriveIntegrationService* integration_service =
158 GetIntegrationServiceByProfile(profile);
159 return integration_service ?
160 integration_service->drive_app_registry() :
161 NULL;
162 }
163
GetDriveServiceByProfile(Profile * profile)164 DriveServiceInterface* GetDriveServiceByProfile(Profile* profile) {
165 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
166
167 DriveIntegrationService* integration_service =
168 GetIntegrationServiceByProfile(profile);
169 return integration_service ? integration_service->drive_service() : NULL;
170 }
171
IsUnderDriveMountPoint(const base::FilePath & path)172 bool IsUnderDriveMountPoint(const base::FilePath& path) {
173 return !ExtractDrivePath(path).empty();
174 }
175
ExtractDrivePath(const base::FilePath & path)176 base::FilePath ExtractDrivePath(const base::FilePath& path) {
177 std::vector<base::FilePath::StringType> components;
178 path.GetComponents(&components);
179 if (components.size() < 3)
180 return base::FilePath();
181 if (components[0] != FILE_PATH_LITERAL("/"))
182 return base::FilePath();
183 if (components[1] != FILE_PATH_LITERAL("special"))
184 return base::FilePath();
185 if (!StartsWithASCII(components[2], "drive", true))
186 return base::FilePath();
187
188 base::FilePath drive_path = GetDriveGrandRootPath();
189 for (size_t i = 3; i < components.size(); ++i)
190 drive_path = drive_path.Append(components[i]);
191 return drive_path;
192 }
193
ExtractProfileFromPath(const base::FilePath & path)194 Profile* ExtractProfileFromPath(const base::FilePath& path) {
195 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
196
197 const std::vector<Profile*>& profiles =
198 g_browser_process->profile_manager()->GetLoadedProfiles();
199 for (size_t i = 0; i < profiles.size(); ++i) {
200 Profile* original_profile = profiles[i]->GetOriginalProfile();
201 if (original_profile == profiles[i] &&
202 !chromeos::ProfileHelper::IsSigninProfile(original_profile)) {
203 const base::FilePath base = GetDriveMountPointPath(original_profile);
204 if (base == path || base.IsParent(path))
205 return original_profile;
206 }
207 }
208 return NULL;
209 }
210
ExtractDrivePathFromFileSystemUrl(const storage::FileSystemURL & url)211 base::FilePath ExtractDrivePathFromFileSystemUrl(
212 const storage::FileSystemURL& url) {
213 if (!url.is_valid() || url.type() != storage::kFileSystemTypeDrive)
214 return base::FilePath();
215 return ExtractDrivePath(url.path());
216 }
217
GetCacheRootPath(Profile * profile)218 base::FilePath GetCacheRootPath(Profile* profile) {
219 base::FilePath cache_base_path;
220 chrome::GetUserCacheDirectory(profile->GetPath(), &cache_base_path);
221 base::FilePath cache_root_path =
222 cache_base_path.Append(chromeos::kDriveCacheDirname);
223 static const base::FilePath::CharType kFileCacheVersionDir[] =
224 FILE_PATH_LITERAL("v1");
225 return cache_root_path.Append(kFileCacheVersionDir);
226 }
227
EscapeCacheFileName(const std::string & filename)228 std::string EscapeCacheFileName(const std::string& filename) {
229 // This is based on net/base/escape.cc: net::(anonymous namespace)::Escape
230 std::string escaped;
231 for (size_t i = 0; i < filename.size(); ++i) {
232 char c = filename[i];
233 if (c == '%' || c == '.' || c == '/') {
234 base::StringAppendF(&escaped, "%%%02X", c);
235 } else {
236 escaped.push_back(c);
237 }
238 }
239 return escaped;
240 }
241
UnescapeCacheFileName(const std::string & filename)242 std::string UnescapeCacheFileName(const std::string& filename) {
243 std::string unescaped;
244 for (size_t i = 0; i < filename.size(); ++i) {
245 char c = filename[i];
246 if (c == '%' && i + 2 < filename.length()) {
247 c = (HexDigitToInt(filename[i + 1]) << 4) +
248 HexDigitToInt(filename[i + 2]);
249 i += 2;
250 }
251 unescaped.push_back(c);
252 }
253 return unescaped;
254 }
255
NormalizeFileName(const std::string & input)256 std::string NormalizeFileName(const std::string& input) {
257 DCHECK(base::IsStringUTF8(input));
258
259 std::string output;
260 if (!base::ConvertToUtf8AndNormalize(input, base::kCodepageUTF8, &output))
261 output = input;
262 base::ReplaceChars(output, "/", "_", &output);
263 if (!output.empty() && output.find_first_not_of('.', 0) == std::string::npos)
264 output = "_";
265 return output;
266 }
267
PrepareWritableFileAndRun(Profile * profile,const base::FilePath & path,const PrepareWritableFileCallback & callback)268 void PrepareWritableFileAndRun(Profile* profile,
269 const base::FilePath& path,
270 const PrepareWritableFileCallback& callback) {
271 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
272 DCHECK(!callback.is_null());
273
274 FileSystemInterface* file_system = GetFileSystemByProfile(profile);
275 if (!file_system || !IsUnderDriveMountPoint(path)) {
276 content::BrowserThread::GetBlockingPool()->PostTask(
277 FROM_HERE, base::Bind(callback, FILE_ERROR_FAILED, base::FilePath()));
278 return;
279 }
280
281 WriteOnCacheFile(file_system,
282 ExtractDrivePath(path),
283 std::string(), // mime_type
284 callback);
285 }
286
EnsureDirectoryExists(Profile * profile,const base::FilePath & directory,const FileOperationCallback & callback)287 void EnsureDirectoryExists(Profile* profile,
288 const base::FilePath& directory,
289 const FileOperationCallback& callback) {
290 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
291 DCHECK(!callback.is_null());
292 if (IsUnderDriveMountPoint(directory)) {
293 FileSystemInterface* file_system = GetFileSystemByProfile(profile);
294 DCHECK(file_system);
295 file_system->CreateDirectory(
296 ExtractDrivePath(directory),
297 true /* is_exclusive */,
298 true /* is_recursive */,
299 callback);
300 } else {
301 base::MessageLoopProxy::current()->PostTask(
302 FROM_HERE, base::Bind(callback, FILE_ERROR_OK));
303 }
304 }
305
EmptyFileOperationCallback(FileError error)306 void EmptyFileOperationCallback(FileError error) {
307 }
308
CreateGDocFile(const base::FilePath & file_path,const GURL & url,const std::string & resource_id)309 bool CreateGDocFile(const base::FilePath& file_path,
310 const GURL& url,
311 const std::string& resource_id) {
312 std::string content = base::StringPrintf(
313 "{\"url\": \"%s\", \"resource_id\": \"%s\"}",
314 url.spec().c_str(), resource_id.c_str());
315 return base::WriteFile(file_path, content.data(), content.size()) ==
316 static_cast<int>(content.size());
317 }
318
ReadUrlFromGDocFile(const base::FilePath & file_path)319 GURL ReadUrlFromGDocFile(const base::FilePath& file_path) {
320 return GURL(ReadStringFromGDocFile(file_path, "url"));
321 }
322
ReadResourceIdFromGDocFile(const base::FilePath & file_path)323 std::string ReadResourceIdFromGDocFile(const base::FilePath& file_path) {
324 return ReadStringFromGDocFile(file_path, "resource_id");
325 }
326
IsDriveEnabledForProfile(Profile * profile)327 bool IsDriveEnabledForProfile(Profile* profile) {
328 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
329
330 if (!chromeos::IsProfileAssociatedWithGaiaAccount(profile))
331 return false;
332
333 // Disable Drive if preference is set. This can happen with commandline flag
334 // --disable-drive or enterprise policy, or with user settings.
335 if (profile->GetPrefs()->GetBoolean(prefs::kDisableDrive))
336 return false;
337
338 return true;
339 }
340
GetDriveConnectionStatus(Profile * profile)341 ConnectionStatusType GetDriveConnectionStatus(Profile* profile) {
342 drive::DriveServiceInterface* const drive_service =
343 drive::util::GetDriveServiceByProfile(profile);
344
345 if (!drive_service)
346 return DRIVE_DISCONNECTED_NOSERVICE;
347 if (net::NetworkChangeNotifier::IsOffline())
348 return DRIVE_DISCONNECTED_NONETWORK;
349 if (!drive_service->CanSendRequest())
350 return DRIVE_DISCONNECTED_NOTREADY;
351
352 const bool is_connection_cellular =
353 net::NetworkChangeNotifier::IsConnectionCellular(
354 net::NetworkChangeNotifier::GetConnectionType());
355 const bool disable_sync_over_celluar =
356 profile->GetPrefs()->GetBoolean(prefs::kDisableDriveOverCellular);
357
358 if (is_connection_cellular && disable_sync_over_celluar)
359 return DRIVE_CONNECTED_METERED;
360 return DRIVE_CONNECTED;
361 }
362
363 } // namespace util
364 } // namespace drive
365