func updateSigs() (string, error) {
url, _, _ := config.UpdateOptions()
if url == "" {
return "Update is not available for this distribution of Siegfried", nil
}
response, err := getHttp(url)
if err != nil {
return "", err
}
var u Update
if err := json.Unmarshal(response, &u); err != nil {
return "", err
}
version := config.Version()
if version[0] < u.SfVersion[0] || (u.SfVersion[0] == version[0] && version[1] < u.SfVersion[1]) {
return "Your version of Siegfried is out of date; please install latest from http://www.itforarchivists.com/siegfried before continuing.", nil
}
s, err := siegfried.Load(config.Signature())
if err == nil {
if !s.Update(u.SigCreated) {
return "You are already up to date!", nil
}
} else {
// this hairy bit of golang exception handling is thanks to Ross! :)
if _, err = os.Stat(config.Home()); err != nil {
if os.IsNotExist(err) {
err = os.MkdirAll(config.Home(), os.ModePerm)
if err != nil {
return "", fmt.Errorf("Siegfried: cannot create home directory %s, %v", config.Home(), err)
}
} else {
return "", fmt.Errorf("Siegfried: error opening directory %s, %v", config.Home(), err)
}
}
}
fmt.Println("... downloading latest signature file ...")
response, err = getHttp(u.LatestURL)
if err != nil {
return "", fmt.Errorf("Siegfried: error retrieving pronom.gob.\nThis may be a network or firewall issue. See https://github.com/richardlehane/siegfried/wiki/Getting-started for manual instructions.\nSystem error: %v", err)
}
if len(response) != u.GobSize {
return "", fmt.Errorf("Siegfried: error retrieving pronom.gob; expecting %d bytes, got %d bytes", u.GobSize, len(response))
}
err = ioutil.WriteFile(config.Signature(), response, os.ModePerm)
if err != nil {
return "", fmt.Errorf("Siegfried: error writing to directory, %v", err)
}
fmt.Printf("... writing %s ...\n", config.Signature())
return "Your signature file has been updated", nil
}
func blameSig(i int) error {
s, err := siegfried.Load(config.Signature())
if err != nil {
return err
}
fmt.Println(s.Blame(i, *inspectCType, *inspectCName))
return nil
}
func inspectGob() error {
s, err := siegfried.Load(config.Signature())
if err != nil {
return err
}
fmt.Print(s)
return nil
}
func blameSig(i int) error {
s, err := siegfried.Load(config.Signature())
if err != nil {
return err
}
fmt.Println(s.InspectTestTree(i))
return nil
}
func inspectSig(t core.MatcherType) error {
s, err := siegfried.Load(config.Signature())
if err != nil {
return err
}
fmt.Print(s.Inspect(t))
return nil
}
func makegob(s *siegfried.Siegfried, opts []config.Option) error {
p, err := pronom.New(opts...)
if err != nil {
return err
}
err = s.Add(p)
if err != nil {
return err
}
return s.Save(config.Signature())
}
// String representation of a Siegfried struct
func (s *Siegfried) String() string {
str := fmt.Sprintf(
"%s (%v)\nidentifiers: \n",
config.Signature(),
s.C.Format(time.RFC3339))
for _, id := range s.ids {
d := id.Describe()
str += fmt.Sprintf(" - %v: %v\n", d[0], d[1])
}
return str
}
func setup() error {
var err error
config.SetHome(*testhome)
s, err = siegfried.Load(config.Signature())
return err
}
func main() {
var err error
if len(os.Args) < 2 {
log.Fatal(usage)
}
switch os.Args[1] {
case "build":
err = build.Parse(os.Args[2:])
if err == nil {
if build.Arg(0) != "" {
config.SetSignature(build.Arg(0))
}
s := siegfried.New()
err = makegob(s, buildOptions())
}
case "add":
err = build.Parse(os.Args[2:])
if err == nil {
if build.Arg(0) != "" {
config.SetSignature(build.Arg(0))
}
var s *siegfried.Siegfried
s, err = siegfried.Load(config.Signature())
if err == nil {
err = makegob(s, buildOptions())
}
}
case "harvest":
err = harvest.Parse(os.Args[2:])
if err == nil {
setHarvestOptions()
err = savereps()
}
case "inspect":
err = inspect.Parse(os.Args[2:])
if err == nil {
setInspectOptions()
input := inspect.Arg(0)
switch {
case input == "":
err = inspectGob()
case filepath.Ext(input) == ".sig":
config.SetSignature(input)
err = inspectGob()
case strings.Contains(input, "fmt"):
err = inspectSig(input)
default:
var i int
i, err = strconv.Atoi(input)
if err != nil {
log.Fatal(err)
}
err = blameSig(i)
}
}
default:
log.Fatal(usage)
}
if err != nil {
log.Fatal(err)
}
os.Exit(0)
}
func main() {
flag.Parse()
/*//UNCOMMENT TO RUN PROFILER
go func() {
log.Println(http.ListenAndServe("localhost:6060", nil))
}()*/
if *home != config.Home() {
config.SetHome(*home)
}
if *sig != config.SignatureBase() {
config.SetSignature(*sig)
}
if *version {
version := config.Version()
fmt.Printf("siegfried version: %d.%d.%d\n", version[0], version[1], version[2])
return
}
if *update {
msg, err := updateSigs()
if err != nil {
log.Fatalf("Error: failed to update signature file, %v", err)
}
fmt.Println(msg)
return
}
// during parallel scanning or in server mode, unsafe to access the last read buffer - so can't unzip or hash
if *multi > 1 || *serve != "" {
if *archive {
log.Fatalln("Error: cannot scan archive formats when running in parallel mode")
}
if *hashf != "" {
log.Fatalln("Error: cannot calculate file checksum when running in parallel mode")
}
}
if err := setHash(); err != nil {
log.Fatal(err)
}
if *serve != "" || *fprflag {
s, err := siegfried.Load(config.Signature())
if err != nil {
log.Fatalf("Error: error loading signature file, got: %v", err)
}
if *serve != "" {
log.Printf("Starting server at %s. Use CTRL-C to quit.\n", *serve)
listen(*serve, s)
return
}
log.Printf("FPR server started at %s. Use CTRL-C to quit.\n", config.Fpr())
serveFpr(config.Fpr(), s)
return
}
if flag.NArg() != 1 {
log.Fatalln("Error: expecting a single file or directory argument")
}
s, err := siegfried.Load(config.Signature())
if err != nil {
log.Fatalf("Error: error loading signature file, got: %v", err)
}
var w writer
switch {
case *debug:
config.SetDebug()
w = debugWriter{}
case *slow:
config.SetSlow()
w = &slowWriter{os.Stdout}
case *csvo:
w = newCSV(os.Stdout)
case *jsono:
w = newJSON(os.Stdout)
case *droido:
w = newDroid(os.Stdout)
case *knowno:
w = &knownWriter{true, os.Stdout}
case *unknowno:
w = &knownWriter{false, os.Stdout}
default:
w = newYAML(os.Stdout)
}
// support reading list files from stdin
if flag.Arg(0) == "-" {
w.writeHead(s)
scanner := bufio.NewScanner(os.Stdin)
for scanner.Scan() {
info, err := os.Stat(scanner.Text())
if err != nil || info.IsDir() {
w.writeFile(scanner.Text(), 0, "", nil, fmt.Errorf("failed to identify %s (in scanning mode, inputs must all be files and not directories), got: %v", scanner.Text(), err), nil)
} else {
identifyFile(w, s, scanner.Text(), info.Size(), info.ModTime().Format(time.RFC3339))
}
}
w.writeTail()
os.Exit(0)
}
info, err := os.Stat(flag.Arg(0))
if err != nil {
log.Fatalf("Error: error getting info for %v, got: %v", flag.Arg(0), err)
}
if info.IsDir() {
if config.Debug() {
log.Fatalln("Error: when scanning in debug mode, give a file rather than a directory argument")
}
w.writeHead(s)
if *multi > 16 {
*multi = 16
}
if *multi > 1 {
multiIdentifyP(w, s, flag.Arg(0), *nr)
} else {
multiIdentifyS(w, s, flag.Arg(0), *nr)
}
w.writeTail()
os.Exit(0)
}
w.writeHead(s)
identifyFile(w, s, flag.Arg(0), info.Size(), info.ModTime().Format(time.RFC3339))
w.writeTail()
os.Exit(0)
}
func main() {
flag.Parse()
/*//UNCOMMENT TO RUN PROFILER
go func() {
log.Println(http.ListenAndServe("localhost:6060", nil))
}()*/
if *version {
version := config.Version()
fmt.Printf("siegfried %d.%d.%d\n", version[0], version[1], version[2])
s, err := siegfried.Load(config.Signature())
if err != nil {
fmt.Println(err)
return
}
fmt.Print(s)
return
}
if *home != config.Home() {
config.SetHome(*home)
}
if *sig != config.SignatureBase() {
config.SetSignature(*sig)
}
if *update {
msg, err := updateSigs()
if err != nil {
log.Fatalf("[FATAL] failed to update signature file, %v", err)
}
fmt.Println(msg)
return
}
// during parallel scanning or in server mode, unsafe to access the last read buffer - so can't unzip or hash
if *multi > 1 || *serve != "" {
if *archive {
log.Fatalln("[FATAL] cannot scan archive formats when running in parallel or server mode")
}
if *hashf != "" {
log.Fatalln("[FATAL] cannot calculate file checksum when running in parallel or server mode")
}
}
if *logf != "" {
if *multi > 1 && *logf != "error" {
log.Fatalln("[FATAL] cannot log in parallel mode")
}
if err := newLogger(*logf); err != nil {
log.Fatalln(err)
}
}
if err := setHash(); err != nil {
log.Fatal(err)
}
if *serve != "" || *fprflag {
s, err := siegfried.Load(config.Signature())
if err != nil {
log.Fatalf("[FATAL] error loading signature file, got: %v", err)
}
if *serve != "" {
log.Printf("Starting server at %s. Use CTRL-C to quit.\n", *serve)
listen(*serve, s)
return
}
log.Printf("FPR server started at %s. Use CTRL-C to quit.\n", config.Fpr())
serveFpr(config.Fpr(), s)
return
}
if flag.NArg() != 1 {
log.Fatalln("[FATAL] expecting a single file or directory argument")
}
s, err := siegfried.Load(config.Signature())
if err != nil {
log.Fatalf("[FATAL] error loading signature file, got: %v", err)
}
var w writer
switch {
case *csvo:
w = newCSV(os.Stdout)
case *jsono:
w = newJSON(os.Stdout)
case *droido:
w = newDroid(os.Stdout)
default:
w = newYAML(os.Stdout)
}
if lg != nil && lg.w == os.Stdout {
w = logWriter{}
}
// support reading list files from stdin
if flag.Arg(0) == "-" {
w.writeHead(s)
scanner := bufio.NewScanner(os.Stdin)
for scanner.Scan() {
info, err := os.Stat(scanner.Text())
if err != nil {
info, err = retryStat(scanner.Text(), err)
}
if err != nil || info.IsDir() {
writeError(w, scanner.Text(), 0, "", fmt.Errorf("failed to identify %s (in scanning mode, inputs must all be files and not directories), got: %v", scanner.Text(), err))
} else {
identifyFile(w, s, scanner.Text(), info.Size(), info.ModTime().Format(time.RFC3339))
}
}
w.writeTail()
lg.printElapsed()
os.Exit(0)
}
info, err := os.Stat(flag.Arg(0))
if err != nil {
info, err = retryStat(flag.Arg(0), err)
if err != nil {
log.Fatalf("[FATAL] cannot get info for %v, got: %v", flag.Arg(0), err)
}
}
if info.IsDir() {
w.writeHead(s)
if *multi > 16 {
*multi = 16
}
if *multi > 1 {
err = multiIdentifyP(w, s, flag.Arg(0), *nr)
} else {
if *throttlef != 0 {
throttle = time.NewTicker(*throttlef)
defer throttle.Stop()
}
err = multiIdentifyS(w, s, flag.Arg(0), "", *nr)
}
w.writeTail()
if err != nil {
log.Fatalf("[FATAL] %v\n", err)
}
lg.printElapsed()
os.Exit(0)
}
w.writeHead(s)
identifyFile(w, s, flag.Arg(0), info.Size(), info.ModTime().Format(time.RFC3339))
w.writeTail()
lg.printElapsed()
os.Exit(0)
}
