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Side by Side Diff: webkit/common/fileapi/file_system_util.cc

Issue 524983002: Move fileapi-related files from webkit/common/ to storage/common/ and set up redirect headers (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: fix presubmit Created 6 years, 3 months ago
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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 "webkit/common/fileapi/file_system_util.h"
6
7 #include <algorithm>
8
9 #include "base/files/file_path.h"
10 #include "base/logging.h"
11 #include "base/strings/string_util.h"
12 #include "base/strings/sys_string_conversions.h"
13 #include "base/strings/utf_string_conversions.h"
14 #include "net/base/escape.h"
15 #include "net/base/net_errors.h"
16 #include "url/gurl.h"
17 #include "webkit/common/database/database_identifier.h"
18
19 namespace storage {
20
21 const char kPersistentDir[] = "/persistent";
22 const char kTemporaryDir[] = "/temporary";
23 const char kIsolatedDir[] = "/isolated";
24 const char kExternalDir[] = "/external";
25 const char kTestDir[] = "/test";
26
27 const base::FilePath::CharType VirtualPath::kRoot[] = FILE_PATH_LITERAL("/");
28 const base::FilePath::CharType VirtualPath::kSeparator = FILE_PATH_LITERAL('/');
29
30 // TODO(ericu): Consider removing support for '\', even on Windows, if possible.
31 // There's a lot of test code that will need reworking, and we may have trouble
32 // with base::FilePath elsewhere [e.g. DirName and other methods may also need
33 // replacement].
34 base::FilePath VirtualPath::BaseName(const base::FilePath& virtual_path) {
35 base::FilePath::StringType path = virtual_path.value();
36
37 // Keep everything after the final separator, but if the pathname is only
38 // one character and it's a separator, leave it alone.
39 while (path.size() > 1 && base::FilePath::IsSeparator(path[path.size() - 1]))
40 path.resize(path.size() - 1);
41 base::FilePath::StringType::size_type last_separator =
42 path.find_last_of(base::FilePath::kSeparators);
43 if (last_separator != base::FilePath::StringType::npos &&
44 last_separator < path.size() - 1)
45 path.erase(0, last_separator + 1);
46
47 return base::FilePath(path);
48 }
49
50 base::FilePath VirtualPath::DirName(const base::FilePath& virtual_path) {
51 typedef base::FilePath::StringType StringType;
52 StringType path = virtual_path.value();
53
54 // The logic below is taken from that of base::FilePath::DirName, except
55 // that this version never cares about '//' or drive-letters even on win32.
56
57 // Strip trailing separators.
58 while (path.size() > 1 && base::FilePath::IsSeparator(path[path.size() - 1]))
59 path.resize(path.size() - 1);
60
61 StringType::size_type last_separator =
62 path.find_last_of(base::FilePath::kSeparators);
63 if (last_separator == StringType::npos) {
64 // path_ is in the current directory.
65 return base::FilePath(base::FilePath::kCurrentDirectory);
66 }
67 if (last_separator == 0) {
68 // path_ is in the root directory.
69 return base::FilePath(path.substr(0, 1));
70 }
71 // path_ is somewhere else, trim the basename.
72 path.resize(last_separator);
73
74 // Strip trailing separators.
75 while (path.size() > 1 && base::FilePath::IsSeparator(path[path.size() - 1]))
76 path.resize(path.size() - 1);
77
78 if (path.empty())
79 return base::FilePath(base::FilePath::kCurrentDirectory);
80
81 return base::FilePath(path);
82 }
83
84 void VirtualPath::GetComponents(
85 const base::FilePath& path,
86 std::vector<base::FilePath::StringType>* components) {
87 typedef base::FilePath::StringType StringType;
88
89 DCHECK(components);
90 if (!components)
91 return;
92 components->clear();
93 if (path.value().empty())
94 return;
95
96 StringType::size_type begin = 0, end = 0;
97 while (begin < path.value().length() && end != StringType::npos) {
98 end = path.value().find_first_of(base::FilePath::kSeparators, begin);
99 StringType component = path.value().substr(
100 begin, end == StringType::npos ? StringType::npos : end - begin);
101 if (!component.empty() && component != base::FilePath::kCurrentDirectory)
102 components->push_back(component);
103 begin = end + 1;
104 }
105 }
106
107 void VirtualPath::GetComponentsUTF8Unsafe(
108 const base::FilePath& path,
109 std::vector<std::string>* components) {
110 DCHECK(components);
111 if (!components)
112 return;
113 components->clear();
114
115 std::vector<base::FilePath::StringType> stringtype_components;
116 VirtualPath::GetComponents(path, &stringtype_components);
117 std::vector<base::FilePath::StringType>::const_iterator it;
118 for (it = stringtype_components.begin(); it != stringtype_components.end();
119 ++it) {
120 components->push_back(base::FilePath(*it).AsUTF8Unsafe());
121 }
122 }
123
124 base::FilePath::StringType VirtualPath::GetNormalizedFilePath(
125 const base::FilePath& path) {
126 base::FilePath::StringType normalized_path = path.value();
127 const size_t num_separators = base::FilePath::StringType(
128 base::FilePath::kSeparators).length();
129 for (size_t i = 0; i < num_separators; ++i) {
130 std::replace(normalized_path.begin(), normalized_path.end(),
131 base::FilePath::kSeparators[i], kSeparator);
132 }
133
134 return (IsAbsolute(normalized_path)) ?
135 normalized_path : base::FilePath::StringType(kRoot) + normalized_path;
136 }
137
138 bool VirtualPath::IsAbsolute(const base::FilePath::StringType& path) {
139 return path.find(kRoot) == 0;
140 }
141
142 bool VirtualPath::IsRootPath(const base::FilePath& path) {
143 std::vector<base::FilePath::StringType> components;
144 VirtualPath::GetComponents(path, &components);
145 return (path.empty() || components.empty() ||
146 (components.size() == 1 &&
147 components[0] == VirtualPath::kRoot));
148 }
149
150 bool ParseFileSystemSchemeURL(const GURL& url,
151 GURL* origin_url,
152 FileSystemType* type,
153 base::FilePath* virtual_path) {
154 GURL origin;
155 FileSystemType file_system_type = kFileSystemTypeUnknown;
156
157 if (!url.is_valid() || !url.SchemeIsFileSystem())
158 return false;
159
160 const struct {
161 FileSystemType type;
162 const char* dir;
163 } kValidTypes[] = {
164 { kFileSystemTypePersistent, kPersistentDir },
165 { kFileSystemTypeTemporary, kTemporaryDir },
166 { kFileSystemTypeIsolated, kIsolatedDir },
167 { kFileSystemTypeExternal, kExternalDir },
168 { kFileSystemTypeTest, kTestDir },
169 };
170
171 // A path of the inner_url contains only mount type part (e.g. "/temporary").
172 DCHECK(url.inner_url());
173 std::string inner_path = url.inner_url()->path();
174 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kValidTypes); ++i) {
175 if (inner_path == kValidTypes[i].dir) {
176 file_system_type = kValidTypes[i].type;
177 break;
178 }
179 }
180
181 if (file_system_type == kFileSystemTypeUnknown)
182 return false;
183
184 std::string path = net::UnescapeURLComponent(url.path(),
185 net::UnescapeRule::SPACES | net::UnescapeRule::URL_SPECIAL_CHARS |
186 net::UnescapeRule::CONTROL_CHARS);
187
188 // Ensure the path is relative.
189 while (!path.empty() && path[0] == '/')
190 path.erase(0, 1);
191
192 base::FilePath converted_path = base::FilePath::FromUTF8Unsafe(path);
193
194 // All parent references should have been resolved in the renderer.
195 if (converted_path.ReferencesParent())
196 return false;
197
198 if (origin_url)
199 *origin_url = url.GetOrigin();
200 if (type)
201 *type = file_system_type;
202 if (virtual_path)
203 *virtual_path = converted_path.NormalizePathSeparators().
204 StripTrailingSeparators();
205
206 return true;
207 }
208
209 GURL GetFileSystemRootURI(const GURL& origin_url, FileSystemType type) {
210 // origin_url is based on a security origin, so http://foo.com or file:///
211 // instead of the corresponding filesystem URL.
212 DCHECK(!origin_url.SchemeIsFileSystem());
213
214 std::string url = "filesystem:" + origin_url.GetWithEmptyPath().spec();
215 switch (type) {
216 case kFileSystemTypeTemporary:
217 url += (kTemporaryDir + 1); // We don't want the leading slash.
218 return GURL(url + "/");
219 case kFileSystemTypePersistent:
220 url += (kPersistentDir + 1); // We don't want the leading slash.
221 return GURL(url + "/");
222 case kFileSystemTypeExternal:
223 url += (kExternalDir + 1); // We don't want the leading slash.
224 return GURL(url + "/");
225 case kFileSystemTypeIsolated:
226 url += (kIsolatedDir + 1); // We don't want the leading slash.
227 return GURL(url + "/");
228 case kFileSystemTypeTest:
229 url += (kTestDir + 1); // We don't want the leading slash.
230 return GURL(url + "/");
231 // Internal types are always pointed via isolated or external URLs.
232 default:
233 NOTREACHED();
234 }
235 NOTREACHED();
236 return GURL();
237 }
238
239 std::string GetFileSystemName(const GURL& origin_url, FileSystemType type) {
240 std::string origin_identifier = storage::GetIdentifierFromOrigin(origin_url);
241 std::string type_string = GetFileSystemTypeString(type);
242 DCHECK(!type_string.empty());
243 return origin_identifier + ":" + type_string;
244 }
245
246 FileSystemType QuotaStorageTypeToFileSystemType(
247 storage::StorageType storage_type) {
248 switch (storage_type) {
249 case storage::kStorageTypeTemporary:
250 return kFileSystemTypeTemporary;
251 case storage::kStorageTypePersistent:
252 return kFileSystemTypePersistent;
253 case storage::kStorageTypeSyncable:
254 return kFileSystemTypeSyncable;
255 case storage::kStorageTypeQuotaNotManaged:
256 case storage::kStorageTypeUnknown:
257 return kFileSystemTypeUnknown;
258 }
259 return kFileSystemTypeUnknown;
260 }
261
262 storage::StorageType FileSystemTypeToQuotaStorageType(FileSystemType type) {
263 switch (type) {
264 case kFileSystemTypeTemporary:
265 return storage::kStorageTypeTemporary;
266 case kFileSystemTypePersistent:
267 return storage::kStorageTypePersistent;
268 case kFileSystemTypeSyncable:
269 case kFileSystemTypeSyncableForInternalSync:
270 return storage::kStorageTypeSyncable;
271 case kFileSystemTypePluginPrivate:
272 return storage::kStorageTypeQuotaNotManaged;
273 default:
274 return storage::kStorageTypeUnknown;
275 }
276 }
277
278 std::string GetFileSystemTypeString(FileSystemType type) {
279 switch (type) {
280 case kFileSystemTypeTemporary:
281 return "Temporary";
282 case kFileSystemTypePersistent:
283 return "Persistent";
284 case kFileSystemTypeIsolated:
285 return "Isolated";
286 case kFileSystemTypeExternal:
287 return "External";
288 case kFileSystemTypeTest:
289 return "Test";
290 case kFileSystemTypeNativeLocal:
291 return "NativeLocal";
292 case kFileSystemTypeRestrictedNativeLocal:
293 return "RestrictedNativeLocal";
294 case kFileSystemTypeDragged:
295 return "Dragged";
296 case kFileSystemTypeNativeMedia:
297 return "NativeMedia";
298 case kFileSystemTypeDeviceMedia:
299 return "DeviceMedia";
300 case kFileSystemTypePicasa:
301 return "Picasa";
302 case kFileSystemTypeItunes:
303 return "Itunes";
304 case kFileSystemTypeIphoto:
305 return "Iphoto";
306 case kFileSystemTypeDrive:
307 return "Drive";
308 case kFileSystemTypeSyncable:
309 case kFileSystemTypeSyncableForInternalSync:
310 return "Syncable";
311 case kFileSystemTypeNativeForPlatformApp:
312 return "NativeForPlatformApp";
313 case kFileSystemTypeForTransientFile:
314 return "TransientFile";
315 case kFileSystemTypePluginPrivate:
316 return "PluginPrivate";
317 case kFileSystemTypeCloudDevice:
318 return "CloudDevice";
319 case kFileSystemTypeProvided:
320 return "Provided";
321 case kFileSystemTypeDeviceMediaAsFileStorage:
322 return "DeviceMediaStorage";
323 case kFileSystemInternalTypeEnumStart:
324 case kFileSystemInternalTypeEnumEnd:
325 NOTREACHED();
326 // Fall through.
327 case kFileSystemTypeUnknown:
328 return "Unknown";
329 }
330 NOTREACHED();
331 return std::string();
332 }
333
334 std::string FilePathToString(const base::FilePath& file_path) {
335 #if defined(OS_WIN)
336 return base::UTF16ToUTF8(file_path.value());
337 #elif defined(OS_POSIX)
338 return file_path.value();
339 #endif
340 }
341
342 base::FilePath StringToFilePath(const std::string& file_path_string) {
343 #if defined(OS_WIN)
344 return base::FilePath(base::UTF8ToUTF16(file_path_string));
345 #elif defined(OS_POSIX)
346 return base::FilePath(file_path_string);
347 #endif
348 }
349
350 blink::WebFileError FileErrorToWebFileError(
351 base::File::Error error_code) {
352 switch (error_code) {
353 case base::File::FILE_ERROR_NOT_FOUND:
354 return blink::WebFileErrorNotFound;
355 case base::File::FILE_ERROR_INVALID_OPERATION:
356 case base::File::FILE_ERROR_EXISTS:
357 case base::File::FILE_ERROR_NOT_EMPTY:
358 return blink::WebFileErrorInvalidModification;
359 case base::File::FILE_ERROR_NOT_A_DIRECTORY:
360 case base::File::FILE_ERROR_NOT_A_FILE:
361 return blink::WebFileErrorTypeMismatch;
362 case base::File::FILE_ERROR_ACCESS_DENIED:
363 return blink::WebFileErrorNoModificationAllowed;
364 case base::File::FILE_ERROR_FAILED:
365 return blink::WebFileErrorInvalidState;
366 case base::File::FILE_ERROR_ABORT:
367 return blink::WebFileErrorAbort;
368 case base::File::FILE_ERROR_SECURITY:
369 return blink::WebFileErrorSecurity;
370 case base::File::FILE_ERROR_NO_SPACE:
371 return blink::WebFileErrorQuotaExceeded;
372 case base::File::FILE_ERROR_INVALID_URL:
373 return blink::WebFileErrorEncoding;
374 default:
375 return blink::WebFileErrorInvalidModification;
376 }
377 }
378
379 bool GetFileSystemPublicType(
380 const std::string type_string,
381 blink::WebFileSystemType* type) {
382 DCHECK(type);
383 if (type_string == "Temporary") {
384 *type = blink::WebFileSystemTypeTemporary;
385 return true;
386 }
387 if (type_string == "Persistent") {
388 *type = blink::WebFileSystemTypePersistent;
389 return true;
390 }
391 if (type_string == "Isolated") {
392 *type = blink::WebFileSystemTypeIsolated;
393 return true;
394 }
395 if (type_string == "External") {
396 *type = blink::WebFileSystemTypeExternal;
397 return true;
398 }
399 NOTREACHED();
400 return false;
401 }
402
403 std::string GetIsolatedFileSystemName(const GURL& origin_url,
404 const std::string& filesystem_id) {
405 std::string name(
406 storage::GetFileSystemName(origin_url, storage::kFileSystemTypeIsolated));
407 name.append("_");
408 name.append(filesystem_id);
409 return name;
410 }
411
412 bool CrackIsolatedFileSystemName(const std::string& filesystem_name,
413 std::string* filesystem_id) {
414 DCHECK(filesystem_id);
415
416 // |filesystem_name| is of the form {origin}:isolated_{filesystem_id}.
417 std::string start_token(":");
418 start_token = start_token.append(
419 GetFileSystemTypeString(kFileSystemTypeIsolated)).append("_");
420 // WebKit uses different case in its constant for isolated file system
421 // names, so we do a case insensitive compare by converting both strings
422 // to uppercase.
423 // TODO(benwells): Remove this when WebKit uses the same constant.
424 start_token = StringToUpperASCII(start_token);
425 std::string filesystem_name_upper = StringToUpperASCII(filesystem_name);
426 size_t pos = filesystem_name_upper.find(start_token);
427 if (pos == std::string::npos)
428 return false;
429 if (pos == 0)
430 return false;
431
432 *filesystem_id = filesystem_name.substr(pos + start_token.length(),
433 std::string::npos);
434 if (filesystem_id->empty())
435 return false;
436
437 return true;
438 }
439
440 bool ValidateIsolatedFileSystemId(const std::string& filesystem_id) {
441 const size_t kExpectedFileSystemIdSize = 32;
442 if (filesystem_id.size() != kExpectedFileSystemIdSize)
443 return false;
444 const std::string kExpectedChars("ABCDEF0123456789");
445 return base::ContainsOnlyChars(filesystem_id, kExpectedChars);
446 }
447
448 std::string GetIsolatedFileSystemRootURIString(
449 const GURL& origin_url,
450 const std::string& filesystem_id,
451 const std::string& optional_root_name) {
452 std::string root = GetFileSystemRootURI(origin_url,
453 kFileSystemTypeIsolated).spec();
454 if (base::FilePath::FromUTF8Unsafe(filesystem_id).ReferencesParent())
455 return std::string();
456 root.append(net::EscapePath(filesystem_id));
457 root.append("/");
458 if (!optional_root_name.empty()) {
459 if (base::FilePath::FromUTF8Unsafe(optional_root_name).ReferencesParent())
460 return std::string();
461 root.append(net::EscapePath(optional_root_name));
462 root.append("/");
463 }
464 return root;
465 }
466
467 std::string GetExternalFileSystemRootURIString(
468 const GURL& origin_url,
469 const std::string& mount_name) {
470 std::string root = GetFileSystemRootURI(origin_url,
471 kFileSystemTypeExternal).spec();
472 if (base::FilePath::FromUTF8Unsafe(mount_name).ReferencesParent())
473 return std::string();
474 root.append(net::EscapePath(mount_name));
475 root.append("/");
476 return root;
477 }
478
479 base::File::Error NetErrorToFileError(int error) {
480 switch (error) {
481 case net::OK:
482 return base::File::FILE_OK;
483 case net::ERR_ADDRESS_IN_USE:
484 return base::File::FILE_ERROR_IN_USE;
485 case net::ERR_FILE_EXISTS:
486 return base::File::FILE_ERROR_EXISTS;
487 case net::ERR_FILE_NOT_FOUND:
488 return base::File::FILE_ERROR_NOT_FOUND;
489 case net::ERR_ACCESS_DENIED:
490 return base::File::FILE_ERROR_ACCESS_DENIED;
491 case net::ERR_TOO_MANY_SOCKET_STREAMS:
492 return base::File::FILE_ERROR_TOO_MANY_OPENED;
493 case net::ERR_OUT_OF_MEMORY:
494 return base::File::FILE_ERROR_NO_MEMORY;
495 case net::ERR_FILE_NO_SPACE:
496 return base::File::FILE_ERROR_NO_SPACE;
497 case net::ERR_INVALID_ARGUMENT:
498 case net::ERR_INVALID_HANDLE:
499 return base::File::FILE_ERROR_INVALID_OPERATION;
500 case net::ERR_ABORTED:
501 case net::ERR_CONNECTION_ABORTED:
502 return base::File::FILE_ERROR_ABORT;
503 case net::ERR_ADDRESS_INVALID:
504 case net::ERR_INVALID_URL:
505 return base::File::FILE_ERROR_INVALID_URL;
506 default:
507 return base::File::FILE_ERROR_FAILED;
508 }
509 }
510
511 } // namespace storage
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