1 // Copyright 2014 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 "content/browser/fileapi/sandbox_database_test_helper.h" 6 7 #include <algorithm> 8 #include <functional> 9 #include <vector> 10 11 #include "base/file_util.h" 12 #include "base/files/file.h" 13 #include "base/files/file_enumerator.h" 14 #include "base/stl_util.h" 15 #include "testing/gtest/include/gtest/gtest.h" 16 #include "webkit/common/fileapi/file_system_util.h" 17 18 using fileapi::FilePathToString; 19 20 namespace content { 21 22 void CorruptDatabase(const base::FilePath& db_path, 23 leveldb::FileType type, 24 ptrdiff_t offset, 25 size_t size) { 26 base::FileEnumerator file_enum(db_path, false /* not recursive */, 27 base::FileEnumerator::DIRECTORIES | base::FileEnumerator::FILES); 28 base::FilePath file_path; 29 base::FilePath picked_file_path; 30 uint64 picked_file_number = kuint64max; 31 32 while (!(file_path = file_enum.Next()).empty()) { 33 uint64 number = kuint64max; 34 leveldb::FileType file_type; 35 EXPECT_TRUE(leveldb::ParseFileName(FilePathToString(file_path.BaseName()), 36 &number, &file_type)); 37 if (file_type == type && 38 (picked_file_number == kuint64max || picked_file_number < number)) { 39 picked_file_path = file_path; 40 picked_file_number = number; 41 } 42 } 43 44 EXPECT_FALSE(picked_file_path.empty()); 45 EXPECT_NE(kuint64max, picked_file_number); 46 47 base::File file(picked_file_path, 48 base::File::FLAG_OPEN | base::File::FLAG_READ | 49 base::File::FLAG_WRITE); 50 ASSERT_TRUE(file.IsValid()); 51 EXPECT_FALSE(file.created()); 52 53 base::File::Info file_info; 54 EXPECT_TRUE(file.GetInfo(&file_info)); 55 if (offset < 0) 56 offset += file_info.size; 57 EXPECT_GE(offset, 0); 58 EXPECT_LE(offset, file_info.size); 59 60 size = std::min(size, static_cast<size_t>(file_info.size - offset)); 61 62 std::vector<char> buf(size); 63 int read_size = file.Read(offset, vector_as_array(&buf), buf.size()); 64 EXPECT_LT(0, read_size); 65 EXPECT_GE(buf.size(), static_cast<size_t>(read_size)); 66 buf.resize(read_size); 67 68 std::transform(buf.begin(), buf.end(), buf.begin(), 69 std::logical_not<char>()); 70 71 int written_size = file.Write(offset, vector_as_array(&buf), buf.size()); 72 EXPECT_GT(written_size, 0); 73 EXPECT_EQ(buf.size(), static_cast<size_t>(written_size)); 74 } 75 76 void DeleteDatabaseFile(const base::FilePath& db_path, 77 leveldb::FileType type) { 78 base::FileEnumerator file_enum(db_path, false /* not recursive */, 79 base::FileEnumerator::DIRECTORIES | base::FileEnumerator::FILES); 80 base::FilePath file_path; 81 while (!(file_path = file_enum.Next()).empty()) { 82 uint64 number = kuint64max; 83 leveldb::FileType file_type; 84 EXPECT_TRUE(leveldb::ParseFileName(FilePathToString(file_path.BaseName()), 85 &number, &file_type)); 86 if (file_type == type) { 87 base::DeleteFile(file_path, false); 88 // We may have multiple files for the same type, so don't break here. 89 } 90 } 91 } 92 93 } // namespace content 94
