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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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 "components/filesystem/util.h" | 5 #include "components/filesystem/util.h" |
| 6 | 6 |
| 7 #include <errno.h> | 7 #include <errno.h> |
| 8 #include <fcntl.h> | 8 #include <fcntl.h> |
| 9 #include <sys/stat.h> | 9 #include <sys/stat.h> |
| 10 #include <time.h> | 10 #include <time.h> |
| 11 | 11 |
| 12 #include <limits> | 12 #include <limits> |
| 13 | 13 |
| 14 #include "base/logging.h" | 14 #include "base/logging.h" |
| 15 #include "base/strings/string_util.h" | 15 #include "base/strings/string_util.h" |
| 16 #include "build/build_config.h" | 16 #include "build/build_config.h" |
| 17 #include "mojo/public/cpp/bindings/string.h" | 17 #include "mojo/public/cpp/bindings/string.h" |
| 18 | 18 |
| 19 #if defined(OS_WIN) | 19 #if defined(OS_WIN) |
| 20 #include "base/strings/utf_string_conversions.h" | 20 #include "base/strings/utf_string_conversions.h" |
| 21 #endif | 21 #endif |
| 22 | 22 |
| 23 // module filesystem has various constants which must line up with enum values | 23 // module filesystem has various constants which must line up with enum values |
| 24 // in base::File::Flags. | 24 // in base::File::Flags. |
| 25 static_assert(filesystem::kFlagOpen == | 25 static_assert(filesystem::mojom::kFlagOpen == |
| 26 static_cast<uint32_t>(base::File::FLAG_OPEN), | 26 static_cast<uint32_t>(base::File::FLAG_OPEN), |
| 27 ""); | 27 ""); |
| 28 static_assert(filesystem::kFlagCreate == | 28 static_assert(filesystem::mojom::kFlagCreate == |
| 29 static_cast<uint32_t>(base::File::FLAG_CREATE), | 29 static_cast<uint32_t>(base::File::FLAG_CREATE), |
| 30 ""); | 30 ""); |
| 31 static_assert(filesystem::kFlagOpenAlways == | 31 static_assert(filesystem::mojom::kFlagOpenAlways == |
| 32 static_cast<uint32_t>(base::File::FLAG_OPEN_ALWAYS), | 32 static_cast<uint32_t>(base::File::FLAG_OPEN_ALWAYS), |
| 33 ""); | 33 ""); |
| 34 static_assert(filesystem::kCreateAlways == | 34 static_assert(filesystem::mojom::kCreateAlways == |
| 35 static_cast<uint32_t>(base::File::FLAG_CREATE_ALWAYS), | 35 static_cast<uint32_t>(base::File::FLAG_CREATE_ALWAYS), |
| 36 ""); | 36 ""); |
| 37 static_assert(filesystem::kFlagOpenTruncated == | 37 static_assert(filesystem::mojom::kFlagOpenTruncated == |
| 38 static_cast<uint32_t>(base::File::FLAG_OPEN_TRUNCATED), | 38 static_cast<uint32_t>(base::File::FLAG_OPEN_TRUNCATED), |
| 39 ""); | 39 ""); |
| 40 static_assert(filesystem::kFlagRead == | 40 static_assert(filesystem::mojom::kFlagRead == |
| 41 static_cast<uint32_t>(base::File::FLAG_READ), | 41 static_cast<uint32_t>(base::File::FLAG_READ), |
| 42 ""); | 42 ""); |
| 43 static_assert(filesystem::kFlagWrite == | 43 static_assert(filesystem::mojom::kFlagWrite == |
| 44 static_cast<uint32_t>(base::File::FLAG_WRITE), | 44 static_cast<uint32_t>(base::File::FLAG_WRITE), |
| 45 ""); | 45 ""); |
| 46 static_assert(filesystem::kFlagAppend == | 46 static_assert(filesystem::mojom::kFlagAppend == |
| 47 static_cast<uint32_t>(base::File::FLAG_APPEND), | 47 static_cast<uint32_t>(base::File::FLAG_APPEND), |
| 48 ""); | 48 ""); |
| 49 | 49 |
| 50 // filesystem.Error in types.mojom must be the same as base::File::Error. | 50 // filesystem.Error in types.mojom must be the same as base::File::Error. |
| 51 static_assert(static_cast<int>(filesystem::FileError::OK) == | 51 static_assert(static_cast<int>(filesystem::mojom::FileError::OK) == |
| 52 static_cast<int>(base::File::FILE_OK), | 52 static_cast<int>(base::File::FILE_OK), |
| 53 ""); | 53 ""); |
| 54 static_assert(static_cast<int>(filesystem::FileError::FAILED) == | 54 static_assert(static_cast<int>(filesystem::mojom::FileError::FAILED) == |
| 55 static_cast<int>(base::File::FILE_ERROR_FAILED), | 55 static_cast<int>(base::File::FILE_ERROR_FAILED), |
| 56 ""); | 56 ""); |
| 57 static_assert(static_cast<int>(filesystem::FileError::IN_USE) == | 57 static_assert(static_cast<int>(filesystem::mojom::FileError::IN_USE) == |
| 58 static_cast<int>(base::File::FILE_ERROR_IN_USE), | 58 static_cast<int>(base::File::FILE_ERROR_IN_USE), |
| 59 ""); | 59 ""); |
| 60 static_assert(static_cast<int>(filesystem::FileError::EXISTS) == | 60 static_assert(static_cast<int>(filesystem::mojom::FileError::EXISTS) == |
| 61 static_cast<int>(base::File::FILE_ERROR_EXISTS), | 61 static_cast<int>(base::File::FILE_ERROR_EXISTS), |
| 62 ""); | 62 ""); |
| 63 static_assert(static_cast<int>(filesystem::FileError::NOT_FOUND) == | 63 static_assert(static_cast<int>(filesystem::mojom::FileError::NOT_FOUND) == |
| 64 static_cast<int>(base::File::FILE_ERROR_NOT_FOUND), | 64 static_cast<int>(base::File::FILE_ERROR_NOT_FOUND), |
| 65 ""); | 65 ""); |
| 66 static_assert(static_cast<int>(filesystem::FileError::ACCESS_DENIED) == | 66 static_assert(static_cast<int>(filesystem::mojom::FileError::ACCESS_DENIED) == |
| 67 static_cast<int>(base::File::FILE_ERROR_ACCESS_DENIED), | 67 static_cast<int>(base::File::FILE_ERROR_ACCESS_DENIED), |
| 68 ""); | 68 ""); |
| 69 static_assert(static_cast<int>(filesystem::FileError::TOO_MANY_OPENED) == | 69 static_assert(static_cast<int>(filesystem::mojom::FileError::TOO_MANY_OPENED) == |
| 70 static_cast<int>(base::File::FILE_ERROR_TOO_MANY_OPENED), | 70 static_cast<int>(base::File::FILE_ERROR_TOO_MANY_OPENED), |
| 71 ""); | 71 ""); |
| 72 static_assert(static_cast<int>(filesystem::FileError::NO_MEMORY) == | 72 static_assert(static_cast<int>(filesystem::mojom::FileError::NO_MEMORY) == |
| 73 static_cast<int>(base::File::FILE_ERROR_NO_MEMORY), | 73 static_cast<int>(base::File::FILE_ERROR_NO_MEMORY), |
| 74 ""); | 74 ""); |
| 75 static_assert(static_cast<int>(filesystem::FileError::NO_SPACE) == | 75 static_assert(static_cast<int>(filesystem::mojom::FileError::NO_SPACE) == |
| 76 static_cast<int>(base::File::FILE_ERROR_NO_SPACE), | 76 static_cast<int>(base::File::FILE_ERROR_NO_SPACE), |
| 77 ""); | 77 ""); |
| 78 static_assert(static_cast<int>(filesystem::FileError::NOT_A_DIRECTORY) == | 78 static_assert(static_cast<int>(filesystem::mojom::FileError::NOT_A_DIRECTORY) == |
| 79 static_cast<int>(base::File::FILE_ERROR_NOT_A_DIRECTORY), | 79 static_cast<int>(base::File::FILE_ERROR_NOT_A_DIRECTORY), |
| 80 ""); | 80 ""); |
| 81 static_assert(static_cast<int>(filesystem::FileError::INVALID_OPERATION) == | 81 static_assert( |
| 82 static_cast<int>(base::File::FILE_ERROR_INVALID_OPERATION), | 82 static_cast<int>(filesystem::mojom::FileError::INVALID_OPERATION) == |
| 83 ""); | 83 static_cast<int>(base::File::FILE_ERROR_INVALID_OPERATION), |
| 84 static_assert(static_cast<int>(filesystem::FileError::SECURITY) == | 84 ""); |
| 85 static_assert(static_cast<int>(filesystem::mojom::FileError::SECURITY) == |
| 85 static_cast<int>(base::File::FILE_ERROR_SECURITY), | 86 static_cast<int>(base::File::FILE_ERROR_SECURITY), |
| 86 ""); | 87 ""); |
| 87 static_assert(static_cast<int>(filesystem::FileError::ABORT) == | 88 static_assert(static_cast<int>(filesystem::mojom::FileError::ABORT) == |
| 88 static_cast<int>(base::File::FILE_ERROR_ABORT), | 89 static_cast<int>(base::File::FILE_ERROR_ABORT), |
| 89 ""); | 90 ""); |
| 90 static_assert(static_cast<int>(filesystem::FileError::NOT_A_FILE) == | 91 static_assert(static_cast<int>(filesystem::mojom::FileError::NOT_A_FILE) == |
| 91 static_cast<int>(base::File::FILE_ERROR_NOT_A_FILE), | 92 static_cast<int>(base::File::FILE_ERROR_NOT_A_FILE), |
| 92 ""); | 93 ""); |
| 93 static_assert(static_cast<int>(filesystem::FileError::NOT_EMPTY) == | 94 static_assert(static_cast<int>(filesystem::mojom::FileError::NOT_EMPTY) == |
| 94 static_cast<int>(base::File::FILE_ERROR_NOT_EMPTY), | 95 static_cast<int>(base::File::FILE_ERROR_NOT_EMPTY), |
| 95 ""); | 96 ""); |
| 96 static_assert(static_cast<int>(filesystem::FileError::INVALID_URL) == | 97 static_assert(static_cast<int>(filesystem::mojom::FileError::INVALID_URL) == |
| 97 static_cast<int>(base::File::FILE_ERROR_INVALID_URL), | 98 static_cast<int>(base::File::FILE_ERROR_INVALID_URL), |
| 98 ""); | 99 ""); |
| 99 static_assert(static_cast<int>(filesystem::FileError::IO) == | 100 static_assert(static_cast<int>(filesystem::mojom::FileError::IO) == |
| 100 static_cast<int>(base::File::FILE_ERROR_IO), | 101 static_cast<int>(base::File::FILE_ERROR_IO), |
| 101 ""); | 102 ""); |
| 102 | 103 |
| 103 // filesystem.Whence in types.mojom must be the same as base::File::Whence. | 104 // filesystem.Whence in types.mojom must be the same as base::File::Whence. |
| 104 static_assert(static_cast<int>(filesystem::Whence::FROM_BEGIN) == | 105 static_assert(static_cast<int>(filesystem::mojom::Whence::FROM_BEGIN) == |
| 105 static_cast<int>(base::File::FROM_BEGIN), | 106 static_cast<int>(base::File::FROM_BEGIN), |
| 106 ""); | 107 ""); |
| 107 static_assert(static_cast<int>(filesystem::Whence::FROM_CURRENT) == | 108 static_assert(static_cast<int>(filesystem::mojom::Whence::FROM_CURRENT) == |
| 108 static_cast<int>(base::File::FROM_CURRENT), | 109 static_cast<int>(base::File::FROM_CURRENT), |
| 109 ""); | 110 ""); |
| 110 static_assert(static_cast<int>(filesystem::Whence::FROM_END) == | 111 static_assert(static_cast<int>(filesystem::mojom::Whence::FROM_END) == |
| 111 static_cast<int>(base::File::FROM_END), | 112 static_cast<int>(base::File::FROM_END), |
| 112 ""); | 113 ""); |
| 113 | 114 |
| 114 namespace filesystem { | 115 namespace filesystem { |
| 115 | 116 |
| 116 FileError IsWhenceValid(Whence whence) { | 117 mojom::FileError IsWhenceValid(mojom::Whence whence) { |
| 117 return (whence == Whence::FROM_CURRENT || whence == Whence::FROM_BEGIN || | 118 return (whence == mojom::Whence::FROM_CURRENT || |
| 118 whence == Whence::FROM_END) | 119 whence == mojom::Whence::FROM_BEGIN || |
| 119 ? FileError::OK | 120 whence == mojom::Whence::FROM_END) |
| 120 : FileError::INVALID_OPERATION; | 121 ? mojom::FileError::OK |
| 122 : mojom::FileError::INVALID_OPERATION; |
| 121 } | 123 } |
| 122 | 124 |
| 123 FileError IsOffsetValid(int64_t offset) { | 125 mojom::FileError IsOffsetValid(int64_t offset) { |
| 124 return (offset >= std::numeric_limits<off_t>::min() && | 126 return (offset >= std::numeric_limits<off_t>::min() && |
| 125 offset <= std::numeric_limits<off_t>::max()) | 127 offset <= std::numeric_limits<off_t>::max()) |
| 126 ? FileError::OK | 128 ? mojom::FileError::OK |
| 127 : FileError::INVALID_OPERATION; | 129 : mojom::FileError::INVALID_OPERATION; |
| 128 } | 130 } |
| 129 | 131 |
| 130 FileError GetError(const base::File& file) { | 132 mojom::FileError GetError(const base::File& file) { |
| 131 return static_cast<filesystem::FileError>(file.error_details()); | 133 return static_cast<filesystem::mojom::FileError>(file.error_details()); |
| 132 } | 134 } |
| 133 | 135 |
| 134 FileInformationPtr MakeFileInformation(const base::File::Info& info) { | 136 mojom::FileInformationPtr MakeFileInformation(const base::File::Info& info) { |
| 135 FileInformationPtr file_info(FileInformation::New()); | 137 mojom::FileInformationPtr file_info(mojom::FileInformation::New()); |
| 136 file_info->type = | 138 file_info->type = info.is_directory ? mojom::FsFileType::DIRECTORY |
| 137 info.is_directory ? FsFileType::DIRECTORY : FsFileType::REGULAR_FILE; | 139 : mojom::FsFileType::REGULAR_FILE; |
| 138 file_info->size = info.size; | 140 file_info->size = info.size; |
| 139 | 141 |
| 140 file_info->atime = info.last_accessed.ToDoubleT(); | 142 file_info->atime = info.last_accessed.ToDoubleT(); |
| 141 file_info->mtime = info.last_modified.ToDoubleT(); | 143 file_info->mtime = info.last_modified.ToDoubleT(); |
| 142 file_info->ctime = info.creation_time.ToDoubleT(); | 144 file_info->ctime = info.creation_time.ToDoubleT(); |
| 143 | 145 |
| 144 return file_info; | 146 return file_info; |
| 145 } | 147 } |
| 146 | 148 |
| 147 FileError ValidatePath(const mojo::String& raw_path, | 149 mojom::FileError ValidatePath(const mojo::String& raw_path, |
| 148 const base::FilePath& filesystem_base, | 150 const base::FilePath& filesystem_base, |
| 149 base::FilePath* out) { | 151 base::FilePath* out) { |
| 150 DCHECK(!raw_path.is_null()); | 152 DCHECK(!raw_path.is_null()); |
| 151 if (!base::IsStringUTF8(raw_path.get())) | 153 if (!base::IsStringUTF8(raw_path.get())) |
| 152 return FileError::INVALID_OPERATION; | 154 return mojom::FileError::INVALID_OPERATION; |
| 153 | 155 |
| 154 #if defined(OS_POSIX) | 156 #if defined(OS_POSIX) |
| 155 base::FilePath::StringType path = raw_path; | 157 base::FilePath::StringType path = raw_path; |
| 156 #elif defined(OS_WIN) | 158 #elif defined(OS_WIN) |
| 157 base::FilePath::StringType path = base::UTF8ToUTF16(raw_path.get()); | 159 base::FilePath::StringType path = base::UTF8ToUTF16(raw_path.get()); |
| 158 #endif | 160 #endif |
| 159 | 161 |
| 160 // TODO(erg): This isn't really what we want. FilePath::AppendRelativePath() | 162 // TODO(erg): This isn't really what we want. FilePath::AppendRelativePath() |
| 161 // is closer. We need to deal with entirely hostile apps trying to bust this | 163 // is closer. We need to deal with entirely hostile apps trying to bust this |
| 162 // function to use a possibly maliciously provided |raw_path| to bust out of | 164 // function to use a possibly maliciously provided |raw_path| to bust out of |
| 163 // |filesystem_base|. | 165 // |filesystem_base|. |
| 164 base::FilePath full_path = filesystem_base.Append(path); | 166 base::FilePath full_path = filesystem_base.Append(path); |
| 165 if (full_path.ReferencesParent()) { | 167 if (full_path.ReferencesParent()) { |
| 166 // TODO(erg): For now, if it references a parent, we'll consider this bad. | 168 // TODO(erg): For now, if it references a parent, we'll consider this bad. |
| 167 return FileError::ACCESS_DENIED; | 169 return mojom::FileError::ACCESS_DENIED; |
| 168 } | 170 } |
| 169 | 171 |
| 170 *out = full_path; | 172 *out = full_path; |
| 171 return FileError::OK; | 173 return mojom::FileError::OK; |
| 172 } | 174 } |
| 173 | 175 |
| 174 } // namespace filesystem | 176 } // namespace filesystem |
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