package main import ( "encoding/json" "fmt" "io/ioutil" "os" "strings" "github.com/rfjakob/gocryptfs/internal/configfile" "github.com/rfjakob/gocryptfs/internal/contentenc" "github.com/rfjakob/gocryptfs/internal/exitcodes" "github.com/rfjakob/gocryptfs/internal/tlog" ) // info pretty-prints the contents of the config file at "filename" for human // consumption, stripping out sensitive data. // This is called when you pass the "-info" option. func info(filename string) { // Read from disk js, err := ioutil.ReadFile(filename) if err != nil { tlog.Fatal.Printf("Reading config file failed: %v", err) os.Exit(exitcodes.LoadConf) } // Unmarshal var cf configfile.ConfFile err = json.Unmarshal(js, &cf) if err != nil { tlog.Fatal.Printf("Failed to unmarshal config file") os.Exit(exitcodes.LoadConf) } if cf.Version != contentenc.CurrentVersion { tlog.Fatal.Printf("Unsupported on-disk format %d", cf.Version) os.Exit(exitcodes.LoadConf) } // Pretty-print fmt.Printf("Creator: %s\n", cf.Creator) fmt.Printf("FeatureFlags: %s\n", strings.Join(cf.FeatureFlags, " ")) fmt.Printf("EncryptedKey: %dB\n", len(cf.EncryptedKey)) s := cf.ScryptObject fmt.Printf("ScryptObject: Salt=%dB N=%d R=%d P=%d KeyLen=%d\n", len(s.Salt), s.N, s.R, s.P, s.KeyLen) }