| 139 | } |
| 140 | |
| 141 | func computeFileHashMD5WithTimeout(path string, timeout time.Duration) (string, bool, error) { |
| 142 | if timeout <= 0 { |
| 143 | timeout = DefaultInlineHashTimeout |
| 144 | } |
| 145 | if timeout < time.Microsecond { |
| 146 | return "", true, nil |
| 147 | } |
| 148 | |
| 149 | f, err := os.Open(path) |
| 150 | if err != nil { |
| 151 | return "", false, err |
| 152 | } |
| 153 | defer func() { _ = f.Close() }() |
| 154 | |
| 155 | h := md5.New() |
| 156 | buf := make([]byte, types.MB) |
| 157 | deadline := time.Now().Add(timeout) |
| 158 | |
| 159 | for { |
| 160 | if time.Now().After(deadline) { |
| 161 | return "", true, nil |
| 162 | } |
| 163 | n, readErr := f.Read(buf) |
| 164 | if n > 0 { |
| 165 | if _, err := h.Write(buf[:n]); err != nil { |
| 166 | return "", false, fmt.Errorf("failed to update md5 hash: %w", err) |
| 167 | } |
| 168 | } |
| 169 | if readErr == io.EOF { |
| 170 | break |
| 171 | } |
| 172 | if readErr != nil { |
| 173 | return "", false, fmt.Errorf("failed to read file for md5 hash: %w", readErr) |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | return hashPrefixMD5 + hex.EncodeToString(h.Sum(nil)), false, nil |
| 178 | } |
| 179 | |
| 180 | func compareAgainstStoredFileHash(path string, storedHash string) (bool, error) { |
| 181 | algo, expected := parseStoredHash(storedHash) |