(f io.Reader)
| 32 | ) |
| 33 | |
| 34 | func (zs *Syncer) parseControlFile(f io.Reader) error { |
| 35 | checksumBytes := 16 |
| 36 | rsumBytes := 4 |
| 37 | seqMatches := 1 |
| 38 | |
| 39 | // Set of headers that we can ignore safely, and counts of how often they |
| 40 | // were seen. |
| 41 | safelines := make(map[string]int) |
| 42 | safelines["Z-URL"] = 0 |
| 43 | safelines["Min-Version"] = 0 |
| 44 | seenHeader := false |
| 45 | |
| 46 | reader := bufio.NewReader(f) |
| 47 | for { |
| 48 | line, err := reader.ReadString('\n') |
| 49 | if err != nil { |
| 50 | return err |
| 51 | } |
| 52 | line = strings.TrimSuffix(line, "\n") |
| 53 | if line == "" { |
| 54 | break |
| 55 | } |
| 56 | |
| 57 | parts := strings.SplitN(line, ": ", 2) |
| 58 | if len(parts) != 2 { |
| 59 | return fmt.Errorf("bad line: %s", line) |
| 60 | } |
| 61 | key, value := parts[0], parts[1] |
| 62 | |
| 63 | // Require the "zsync:" header to come first. |
| 64 | if !seenHeader { |
| 65 | if key != "zsync" { |
| 66 | return ErrNotZsyncFile |
| 67 | } |
| 68 | if value == "0.0.4" { |
| 69 | return ErrNotSupported004 |
| 70 | } |
| 71 | seenHeader = true |
| 72 | continue |
| 73 | } |
| 74 | |
| 75 | switch key { |
| 76 | case "Length": |
| 77 | var err error |
| 78 | zs.filelen, err = strconv.ParseInt(value, 10, 64) |
| 79 | if err != nil { |
| 80 | return fmt.Errorf("bad length: %s", value) |
| 81 | } |
| 82 | case "Filename": |
| 83 | zs.targetFilename = value |
| 84 | case "URL": |
| 85 | zs.urls = append(zs.urls, value) |
| 86 | case "Blocksize": |
| 87 | blocksize, err := strconv.ParseInt(value, 10, 64) |
| 88 | if err != nil { |
| 89 | return fmt.Errorf("bad blocksize: %s", value) |
| 90 | } |
| 91 | if blocksize&(blocksize-1) != 0 { |
no test coverage detected