d5adde1eeb
This commit defines all exit codes in one place in the exitcodes package. Also, it adds a test to verify the exit code on incorrect password, which is what SiriKali cares about the most. Fixes https://github.com/rfjakob/gocryptfs/issues/77 .
66 lines
1.9 KiB
Go
66 lines
1.9 KiB
Go
package main
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import (
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"encoding/hex"
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"os"
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"strings"
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"golang.org/x/crypto/ssh/terminal"
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"github.com/rfjakob/gocryptfs/internal/cryptocore"
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"github.com/rfjakob/gocryptfs/internal/exitcodes"
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"github.com/rfjakob/gocryptfs/internal/tlog"
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)
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// printMasterKey - remind the user that he should store the master key in
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// a safe place
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func printMasterKey(key []byte) {
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if !terminal.IsTerminal(int(os.Stdout.Fd())) {
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// We don't want the master key to end up in a log file
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tlog.Info.Printf("Not running on a terminal, suppressing master key display\n")
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return
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}
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h := hex.EncodeToString(key)
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var hChunked string
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// Try to make it less scary by splitting it up in chunks
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for i := 0; i < len(h); i += 8 {
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hChunked += h[i : i+8]
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if i < 52 {
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hChunked += "-"
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}
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if i == 24 {
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hChunked += "\n "
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}
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}
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tlog.Info.Printf(`
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Your master key is:
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%s
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If the gocryptfs.conf file becomes corrupted or you ever forget your password,
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there is only one hope for recovery: The master key. Print it to a piece of
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paper and store it in a drawer. Use "-q" to suppress this message.
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`, tlog.ColorGrey+hChunked+tlog.ColorReset)
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}
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// parseMasterKey - Parse a hex-encoded master key that was passed on the command line
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// Calls os.Exit on failure
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func parseMasterKey(masterkey string) []byte {
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masterkey = strings.Replace(masterkey, "-", "", -1)
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key, err := hex.DecodeString(masterkey)
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if err != nil {
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tlog.Fatal.Printf("Could not parse master key: %v", err)
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os.Exit(exitcodes.MasterKey)
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}
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if len(key) != cryptocore.KeyLen {
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tlog.Fatal.Printf("Master key has length %d but we require length %d", len(key), cryptocore.KeyLen)
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os.Exit(exitcodes.MasterKey)
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}
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tlog.Info.Printf("Using explicit master key.")
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tlog.Info.Printf(tlog.ColorYellow +
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"THE MASTER KEY IS VISIBLE VIA \"ps ax\" AND MAY BE STORED IN YOUR SHELL HISTORY!\n" +
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"ONLY USE THIS MODE FOR EMERGENCIES." + tlog.ColorReset)
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return key
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}
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