func main() {
// Ensure seed hex was specified.
if len(os.Args) < 2 {
appName := filepath.Base(os.Args[0])
appName = strings.TrimSuffix(appName, filepath.Ext(appName))
fmt.Fprintf(os.Stderr, "Seed hex argument not specified\n\n")
fmt.Fprintln(os.Stderr, "Usage:")
fmt.Fprintf(os.Stderr, " %s <seedhex>\n", appName)
os.Exit(1)
}
// Ensure the hex is the appropriate length for a 256-bit seed.
seedStr := strings.TrimSpace(os.Args[1])
if len(seedStr) != 64 {
fmt.Println("The specified seed must have a length of 64 characters")
os.Exit(1)
}
// Decode hex to bytes.
seedBytes, err := hex.DecodeString(seedStr)
if err != nil {
fmt.Println("Specified seed hex is not valid. It must only " +
"contain numbers and letters in the range [a-f]")
os.Exit(1)
}
// Convert bytes to seed words with checksum.
seedWords, err := pgpwordlist.ToStringChecksum(seedBytes)
if err != nil {
fmt.Printf("Unable to encode seed bytes: %v", err)
os.Exit(1)
}
fmt.Println(seedWords)
}
// createSimulationWallet is intended to be called from the rpcclient
// and used to create a wallet for actors involved in simulations.
func createSimulationWallet(cfg *config) error {
// Simulation wallet password is 'password'.
privPass := wallet.SimulationPassphrase
// Public passphrase is the default.
pubPass := []byte(wallet.InsecurePubPassphrase)
// Generate a random seed.
seed, err := hdkeychain.GenerateSeed(hdkeychain.RecommendedSeedLen)
if err != nil {
return err
}
netDir := networkDir(cfg.AppDataDir, activeNet.Params)
// Write the seed to disk, so that we can restore it later
// if need be, for testing purposes.
seedStr, err := pgpwordlist.ToStringChecksum(seed)
if err != nil {
return err
}
err = ioutil.WriteFile(filepath.Join(netDir, "seed"), []byte(seedStr), 0644)
if err != nil {
return err
}
// Create the wallet.
dbPath := filepath.Join(netDir, walletDbName)
fmt.Println("Creating the wallet...")
// Create the wallet database backed by bolt db.
db, err := walletdb.Create("bdb", dbPath)
if err != nil {
return err
}
defer db.Close()
// Create the wallet.
err = wallet.Create(db, pubPass, privPass, seed, activeNet.Params, cfg.UnsafeMainNet)
if err != nil {
return err
}
fmt.Println("The wallet has been created successfully.")
return nil
}
// Seed prompts the user whether they want to use an existing wallet generation
// seed. When the user answers no, a seed will be generated and displayed to
// the user along with prompting them for confirmation. When the user answers
// yes, a the user is prompted for it. All prompts are repeated until the user
// enters a valid response. The bool returned indicates if the wallet was
// restored from a given seed or not.
func Seed(reader *bufio.Reader) ([]byte, error) {
// Ascertain the wallet generation seed.
useUserSeed, err := promptListBool(reader, "Do you have an "+
"existing wallet seed you want to use?", "no")
if err != nil {
return nil, err
}
if !useUserSeed {
seed, err := hdkeychain.GenerateSeed(hdkeychain.RecommendedSeedLen)
if err != nil {
return nil, err
}
seedStr, err := pgpwordlist.ToStringChecksum(seed)
if err != nil {
return nil, err
}
seedStrSplit := strings.Split(seedStr, " ")
fmt.Println("Your wallet generation seed is:")
for i := 0; i < hdkeychain.RecommendedSeedLen+1; i++ {
fmt.Printf("%v ", seedStrSplit[i])
if (i+1)%6 == 0 {
fmt.Printf("\n")
}
}
fmt.Printf("\n\nHex: %x\n", seed)
fmt.Println("IMPORTANT: Keep the seed in a safe place as you\n" +
"will NOT be able to restore your wallet without it.")
fmt.Println("Please keep in mind that anyone who has access\n" +
"to the seed can also restore your wallet thereby\n" +
"giving them access to all your funds, so it is\n" +
"imperative that you keep it in a secure location.")
for {
fmt.Print(`Once you have stored the seed in a safe ` +
`and secure location, enter "OK" to continue: `)
confirmSeed, err := reader.ReadString('\n')
if err != nil {
return nil, err
}
confirmSeed = strings.TrimSpace(confirmSeed)
confirmSeed = strings.Trim(confirmSeed, `"`)
if confirmSeed == "OK" {
break
}
}
return seed, nil
}
for {
fmt.Print("Enter existing wallet seed " +
"(followed by a blank line): ")
// Use scanner instead of buffio.Reader so we can choose choose
// more complicated ending condition rather than just a single
// newline.
var seedStr string
scanner := bufio.NewScanner(os.Stdin)
for scanner.Scan() {
line := scanner.Text()
if line == "" {
break
}
seedStr += " " + line
}
seedStrTrimmed := strings.TrimSpace(seedStr)
seedStrTrimmed = collapseSpace(seedStrTrimmed)
wordCount := strings.Count(seedStrTrimmed, " ") + 1
var seed []byte
if wordCount == 1 {
if len(seedStrTrimmed)%2 != 0 {
seedStrTrimmed = "0" + seedStrTrimmed
}
seed, err = hex.DecodeString(seedStrTrimmed)
if err != nil {
fmt.Printf("Input error: %v\n", err.Error())
}
} else {
seed, err = pgpwordlist.ToBytesChecksum(seedStrTrimmed)
if err != nil {
fmt.Printf("Input error: %v\n", err.Error())
}
}
if err != nil || len(seed) < hdkeychain.MinSeedBytes ||
len(seed) > hdkeychain.MaxSeedBytes {
fmt.Printf("Invalid seed specified. Must be a "+
"word seed (usually 33 words) using the PGP wordlist or "+
"hexadecimal value that is at least %d bits and "+
"at most %d bits\n", hdkeychain.MinSeedBytes*8,
hdkeychain.MaxSeedBytes*8)
continue
}
fmt.Printf("\nSeed input successful. \nHex: %x\n", seed)
return seed, nil
}
}
// createSimulationWallet is intended to be called from the rpcclient
// and used to create a wallet for actors involved in simulations.
func createSimulationWallet(cfg *config) error {
// Simulation wallet password is 'password'.
privPass := []byte("password")
// Public passphrase is the default.
pubPass := []byte(defaultPubPassphrase)
// Generate a random seed.
seed, err := hdkeychain.GenerateSeed(hdkeychain.RecommendedSeedLen)
if err != nil {
return err
}
netDir := networkDir(cfg.DataDir, activeNet.Params)
// Write the seed to disk, so that we can restore it later
// if need be, for testing purposes.
seedStr, err := pgpwordlist.ToStringChecksum(seed)
if err != nil {
return err
}
err = ioutil.WriteFile(filepath.Join(netDir, "seed"), []byte(seedStr), 0644)
if err != nil {
return err
}
// Create the wallet.
dbPath := filepath.Join(netDir, walletDbName)
fmt.Println("Creating the wallet...")
// Create the wallet database backed by bolt db.
db, err := walletdb.Create("bdb", dbPath)
if err != nil {
return err
}
defer db.Close()
// Create the address manager.
waddrmgrNamespace, err := db.Namespace(waddrmgrNamespaceKey)
if err != nil {
return err
}
manager, err := waddrmgr.Create(waddrmgrNamespace, seed, []byte(pubPass),
[]byte(privPass), activeNet.Params, nil)
if err != nil {
return err
}
defer manager.Close()
// Create the stake manager/store.
wstakemgrNamespace, err := db.Namespace(wstakemgrNamespaceKey)
if err != nil {
return err
}
stakeStore, err := wstakemgr.Create(wstakemgrNamespace, manager,
activeNet.Params)
if err != nil {
return err
}
defer stakeStore.Close()
fmt.Println("The wallet has been created successfully.")
return nil
}