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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 "chrome/browser/safe_browsing/safe_browsing_store_file.h" | 5 #include "chrome/browser/safe_browsing/safe_browsing_store_file.h" |
| 6 | 6 |
| 7 #include "base/file_util.h" |
| 8 #include "base/files/scoped_file.h" |
| 7 #include "base/md5.h" | 9 #include "base/md5.h" |
| 8 #include "base/metrics/histogram.h" | 10 #include "base/metrics/histogram.h" |
| 9 | 11 |
| 10 namespace { | 12 namespace { |
| 11 | 13 |
| 12 // NOTE(shess): kFileMagic should not be a byte-wise palindrome, so | 14 // NOTE(shess): kFileMagic should not be a byte-wise palindrome, so |
| 13 // that byte-order changes force corruption. | 15 // that byte-order changes force corruption. |
| 14 const int32 kFileMagic = 0x600D71FE; | 16 const int32 kFileMagic = 0x600D71FE; |
| 15 const int32 kFileVersion = 7; // SQLite storage was 6... | 17 const int32 kFileVersion = 7; // SQLite storage was 6... |
| 16 | 18 |
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| 285 } | 287 } |
| 286 | 288 |
| 287 bool SafeBrowsingStoreFile::WriteAddPrefix(int32 chunk_id, SBPrefix prefix) { | 289 bool SafeBrowsingStoreFile::WriteAddPrefix(int32 chunk_id, SBPrefix prefix) { |
| 288 add_prefixes_.push_back(SBAddPrefix(chunk_id, prefix)); | 290 add_prefixes_.push_back(SBAddPrefix(chunk_id, prefix)); |
| 289 return true; | 291 return true; |
| 290 } | 292 } |
| 291 | 293 |
| 292 bool SafeBrowsingStoreFile::GetAddPrefixes(SBAddPrefixes* add_prefixes) { | 294 bool SafeBrowsingStoreFile::GetAddPrefixes(SBAddPrefixes* add_prefixes) { |
| 293 add_prefixes->clear(); | 295 add_prefixes->clear(); |
| 294 | 296 |
| 295 file_util::ScopedFILE file(base::OpenFile(filename_, "rb")); | 297 base::ScopedFILE file(base::OpenFile(filename_, "rb")); |
| 296 if (file.get() == NULL) return false; | 298 if (file.get() == NULL) return false; |
| 297 | 299 |
| 298 FileHeader header; | 300 FileHeader header; |
| 299 if (!ReadAndVerifyHeader(filename_, file.get(), &header, NULL)) | 301 if (!ReadAndVerifyHeader(filename_, file.get(), &header, NULL)) |
| 300 return OnCorruptDatabase(); | 302 return OnCorruptDatabase(); |
| 301 | 303 |
| 302 size_t add_prefix_offset = header.add_chunk_count * sizeof(int32) + | 304 size_t add_prefix_offset = header.add_chunk_count * sizeof(int32) + |
| 303 header.sub_chunk_count * sizeof(int32); | 305 header.sub_chunk_count * sizeof(int32); |
| 304 if (!FileSkip(add_prefix_offset, file.get())) | 306 if (!FileSkip(add_prefix_offset, file.get())) |
| 305 return false; | 307 return false; |
| 306 | 308 |
| 307 if (!ReadToContainer(add_prefixes, header.add_prefix_count, file.get(), NULL)) | 309 if (!ReadToContainer(add_prefixes, header.add_prefix_count, file.get(), NULL)) |
| 308 return false; | 310 return false; |
| 309 | 311 |
| 310 return true; | 312 return true; |
| 311 } | 313 } |
| 312 | 314 |
| 313 bool SafeBrowsingStoreFile::GetAddFullHashes( | 315 bool SafeBrowsingStoreFile::GetAddFullHashes( |
| 314 std::vector<SBAddFullHash>* add_full_hashes) { | 316 std::vector<SBAddFullHash>* add_full_hashes) { |
| 315 add_full_hashes->clear(); | 317 add_full_hashes->clear(); |
| 316 | 318 |
| 317 file_util::ScopedFILE file(base::OpenFile(filename_, "rb")); | 319 base::ScopedFILE file(base::OpenFile(filename_, "rb")); |
| 318 if (file.get() == NULL) return false; | 320 if (file.get() == NULL) return false; |
| 319 | 321 |
| 320 FileHeader header; | 322 FileHeader header; |
| 321 if (!ReadAndVerifyHeader(filename_, file.get(), &header, NULL)) | 323 if (!ReadAndVerifyHeader(filename_, file.get(), &header, NULL)) |
| 322 return OnCorruptDatabase(); | 324 return OnCorruptDatabase(); |
| 323 | 325 |
| 324 size_t offset = | 326 size_t offset = |
| 325 header.add_chunk_count * sizeof(int32) + | 327 header.add_chunk_count * sizeof(int32) + |
| 326 header.sub_chunk_count * sizeof(int32) + | 328 header.sub_chunk_count * sizeof(int32) + |
| 327 header.add_prefix_count * sizeof(SBAddPrefix) + | 329 header.add_prefix_count * sizeof(SBAddPrefix) + |
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| 390 DCHECK_EQ(chunks_written_, 0); | 392 DCHECK_EQ(chunks_written_, 0); |
| 391 | 393 |
| 392 // Since the following code will already hit the profile looking for | 394 // Since the following code will already hit the profile looking for |
| 393 // database files, this is a reasonable to time delete any old | 395 // database files, this is a reasonable to time delete any old |
| 394 // files. | 396 // files. |
| 395 CheckForOriginalAndDelete(filename_); | 397 CheckForOriginalAndDelete(filename_); |
| 396 | 398 |
| 397 corruption_seen_ = false; | 399 corruption_seen_ = false; |
| 398 | 400 |
| 399 const base::FilePath new_filename = TemporaryFileForFilename(filename_); | 401 const base::FilePath new_filename = TemporaryFileForFilename(filename_); |
| 400 file_util::ScopedFILE new_file(base::OpenFile(new_filename, "wb+")); | 402 base::ScopedFILE new_file(base::OpenFile(new_filename, "wb+")); |
| 401 if (new_file.get() == NULL) | 403 if (new_file.get() == NULL) |
| 402 return false; | 404 return false; |
| 403 | 405 |
| 404 file_util::ScopedFILE file(base::OpenFile(filename_, "rb")); | 406 base::ScopedFILE file(base::OpenFile(filename_, "rb")); |
| 405 empty_ = (file.get() == NULL); | 407 empty_ = (file.get() == NULL); |
| 406 if (empty_) { | 408 if (empty_) { |
| 407 // If the file exists but cannot be opened, try to delete it (not | 409 // If the file exists but cannot be opened, try to delete it (not |
| 408 // deleting directly, the bloom filter needs to be deleted, too). | 410 // deleting directly, the bloom filter needs to be deleted, too). |
| 409 if (base::PathExists(filename_)) | 411 if (base::PathExists(filename_)) |
| 410 return OnCorruptDatabase(); | 412 return OnCorruptDatabase(); |
| 411 | 413 |
| 412 new_file_.swap(new_file); | 414 new_file_.swap(new_file); |
| 413 return true; | 415 return true; |
| 414 } | 416 } |
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| 742 // With SQLite support gone, one way to get to this code is if the | 744 // With SQLite support gone, one way to get to this code is if the |
| 743 // existing file is a SQLite file. Make sure the journal file is | 745 // existing file is a SQLite file. Make sure the journal file is |
| 744 // also removed. | 746 // also removed. |
| 745 const base::FilePath journal_filename( | 747 const base::FilePath journal_filename( |
| 746 basename.value() + FILE_PATH_LITERAL("-journal")); | 748 basename.value() + FILE_PATH_LITERAL("-journal")); |
| 747 if (base::PathExists(journal_filename)) | 749 if (base::PathExists(journal_filename)) |
| 748 base::DeleteFile(journal_filename, false); | 750 base::DeleteFile(journal_filename, false); |
| 749 | 751 |
| 750 return true; | 752 return true; |
| 751 } | 753 } |
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