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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "base/path_service.h" | 5 #include "base/path_service.h" |
| 6 | 6 |
| 7 #if defined(OS_WIN) | 7 #if defined(OS_WIN) |
| 8 #include <windows.h> | 8 #include <windows.h> |
| 9 #include <shellapi.h> | 9 #include <shellapi.h> |
| 10 #include <shlobj.h> | 10 #include <shlobj.h> |
| 11 #endif | 11 #endif |
| 12 | 12 |
| 13 #include "base/file_util.h" | 13 #include "base/file_util.h" |
| 14 #include "base/files/file_path.h" | 14 #include "base/files/file_path.h" |
| 15 #include "base/hash_tables.h" | 15 #include "base/hash_tables.h" |
| 16 #include "base/lazy_instance.h" | 16 #include "base/lazy_instance.h" |
| 17 #include "base/logging.h" | 17 #include "base/logging.h" |
| 18 #include "base/synchronization/lock.h" | 18 #include "base/synchronization/lock.h" |
| 19 | 19 |
| 20 using base::FilePath; | 20 using base::FilePath; |
| 21 using base::MakeAbsoluteFilePath; |
| 21 | 22 |
| 22 namespace base { | 23 namespace base { |
| 23 bool PathProvider(int key, FilePath* result); | 24 bool PathProvider(int key, FilePath* result); |
| 24 #if defined(OS_WIN) | 25 #if defined(OS_WIN) |
| 25 bool PathProviderWin(int key, FilePath* result); | 26 bool PathProviderWin(int key, FilePath* result); |
| 26 #elif defined(OS_MACOSX) | 27 #elif defined(OS_MACOSX) |
| 27 bool PathProviderMac(int key, FilePath* result); | 28 bool PathProviderMac(int key, FilePath* result); |
| 28 #elif defined(OS_ANDROID) | 29 #elif defined(OS_ANDROID) |
| 29 bool PathProviderAndroid(int key, FilePath* result); | 30 bool PathProviderAndroid(int key, FilePath* result); |
| 30 #elif defined(OS_POSIX) | 31 #elif defined(OS_POSIX) |
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| 210 break; | 211 break; |
| 211 DCHECK(path.empty()) << "provider should not have modified path"; | 212 DCHECK(path.empty()) << "provider should not have modified path"; |
| 212 provider = provider->next; | 213 provider = provider->next; |
| 213 } | 214 } |
| 214 | 215 |
| 215 if (path.empty()) | 216 if (path.empty()) |
| 216 return false; | 217 return false; |
| 217 | 218 |
| 218 if (path.ReferencesParent()) { | 219 if (path.ReferencesParent()) { |
| 219 // Make sure path service never returns a path with ".." in it. | 220 // Make sure path service never returns a path with ".." in it. |
| 220 if (!file_util::AbsolutePath(&path)) { | 221 path = MakeAbsoluteFilePath(path); |
| 222 if (path.empty()) |
| 221 return false; | 223 return false; |
| 222 } | |
| 223 } | 224 } |
| 224 *result = path; | 225 *result = path; |
| 225 | 226 |
| 226 base::AutoLock scoped_lock(path_data->lock); | 227 base::AutoLock scoped_lock(path_data->lock); |
| 227 if (!path_data->cache_disabled) | 228 if (!path_data->cache_disabled) |
| 228 path_data->cache[key] = path; | 229 path_data->cache[key] = path; |
| 229 | 230 |
| 230 return true; | 231 return true; |
| 231 } | 232 } |
| 232 | 233 |
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| 243 PathData* path_data = GetPathData(); | 244 PathData* path_data = GetPathData(); |
| 244 DCHECK(path_data); | 245 DCHECK(path_data); |
| 245 DCHECK_GT(key, base::DIR_CURRENT) << "invalid path key"; | 246 DCHECK_GT(key, base::DIR_CURRENT) << "invalid path key"; |
| 246 | 247 |
| 247 FilePath file_path = path; | 248 FilePath file_path = path; |
| 248 | 249 |
| 249 // For some locations this will fail if called from inside the sandbox there- | 250 // For some locations this will fail if called from inside the sandbox there- |
| 250 // fore we protect this call with a flag. | 251 // fore we protect this call with a flag. |
| 251 if (create) { | 252 if (create) { |
| 252 // Make sure the directory exists. We need to do this before we translate | 253 // Make sure the directory exists. We need to do this before we translate |
| 253 // this to the absolute path because on POSIX, AbsolutePath fails if called | 254 // this to the absolute path because on POSIX, MakeAbsoluteFilePath fails |
| 254 // on a non-existent path. | 255 // if called on a non-existent path. |
| 255 if (!file_util::PathExists(file_path) && | 256 if (!file_util::PathExists(file_path) && |
| 256 !file_util::CreateDirectory(file_path)) | 257 !file_util::CreateDirectory(file_path)) |
| 257 return false; | 258 return false; |
| 258 } | 259 } |
| 259 | 260 |
| 260 // We need to have an absolute path, as extensions and plugins don't like | 261 // We need to have an absolute path. |
| 261 // relative paths, and will gladly crash the browser in CHECK()s if they get a | 262 file_path = MakeAbsoluteFilePath(file_path); |
| 262 // relative path. | 263 if (file_path.empty()) |
| 263 if (!file_util::AbsolutePath(&file_path)) | |
| 264 return false; | 264 return false; |
| 265 | 265 |
| 266 base::AutoLock scoped_lock(path_data->lock); | 266 base::AutoLock scoped_lock(path_data->lock); |
| 267 | 267 |
| 268 // Clear the cache now. Some of its entries could have depended | 268 // Clear the cache now. Some of its entries could have depended |
| 269 // on the value we are overriding, and are now out of sync with reality. | 269 // on the value we are overriding, and are now out of sync with reality. |
| 270 path_data->cache.clear(); | 270 path_data->cache.clear(); |
| 271 | 271 |
| 272 path_data->overrides[key] = file_path; | 272 path_data->overrides[key] = file_path; |
| 273 | 273 |
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| 327 | 327 |
| 328 // static | 328 // static |
| 329 void PathService::DisableCache() { | 329 void PathService::DisableCache() { |
| 330 PathData* path_data = GetPathData(); | 330 PathData* path_data = GetPathData(); |
| 331 DCHECK(path_data); | 331 DCHECK(path_data); |
| 332 | 332 |
| 333 base::AutoLock scoped_lock(path_data->lock); | 333 base::AutoLock scoped_lock(path_data->lock); |
| 334 path_data->cache.clear(); | 334 path_data->cache.clear(); |
| 335 path_data->cache_disabled = true; | 335 path_data->cache_disabled = true; |
| 336 } | 336 } |
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