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solana
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solana/keygen/src/keygen.rs

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#![allow(clippy::integer_arithmetic)]
use bip39::{Language, Mnemonic, MnemonicType, Seed};
use clap::{
crate_description, crate_name, value_t, value_t_or_exit, values_t_or_exit, App, AppSettings,
Arg, ArgMatches, SubCommand,
};
use solana_clap_utils::{
input_parsers::STDOUT_OUTFILE_TOKEN,
input_validators::{is_parsable, is_prompt_signer_source},
keypair::{
keypair_from_path, keypair_from_seed_phrase, prompt_passphrase, signer_from_path,
SKIP_SEED_PHRASE_VALIDATION_ARG,
},
ArgConstant, DisplayError,
};
use solana_cli_config::{Config, CONFIG_FILE};
use solana_remote_wallet::remote_wallet::RemoteWalletManager;
use solana_sdk::{
instruction::{AccountMeta, Instruction},
message::Message,
pubkey::{write_pubkey_file, Pubkey},
signature::{keypair_from_seed, write_keypair, write_keypair_file, Keypair, Signer},
};
use std::{
collections::HashSet,
error,
path::Path,
process::exit,
sync::{
atomic::{AtomicBool, AtomicU64, Ordering},
Arc,
},
thread,
time::Instant,
};
const NO_PASSPHRASE: &str = "";
struct GrindMatch {
starts: String,
ends: String,
count: AtomicU64,
}
const WORD_COUNT_ARG: ArgConstant<'static> = ArgConstant {
long: "word-count",
name: "word_count",
help: "Specify the number of words that will be present in the generated seed phrase",
};
const LANGUAGE_ARG: ArgConstant<'static> = ArgConstant {
long: "language",
name: "language",
help: "Specify the mnemonic lanaguage that will be present in the generated seed phrase",
};
const NO_PASSPHRASE_ARG: ArgConstant<'static> = ArgConstant {
long: "no-bip39-passphrase",
name: "no_passphrase",
help: "Do not prompt for a BIP39 passphrase",
};
const NO_OUTFILE_ARG: ArgConstant<'static> = ArgConstant {
long: "no-outfile",
name: "no_outfile",
help: "Only print a seed phrase and pubkey. Do not output a keypair file",
};
fn word_count_arg<'a, 'b>() -> Arg<'a, 'b> {
Arg::with_name(WORD_COUNT_ARG.name)
.long(WORD_COUNT_ARG.long)
.possible_values(&["12", "15", "18", "21", "24"])
.default_value("12")
.value_name("NUMBER")
.takes_value(true)
.help(WORD_COUNT_ARG.help)
}
fn language_arg<'a, 'b>() -> Arg<'a, 'b> {
Arg::with_name(LANGUAGE_ARG.name)
.long(LANGUAGE_ARG.long)
.possible_values(&[
"english",
"chinese-simplified",
"chinese-traditional",
"japanese",
"spanish",
"korean",
"french",
"italian",
])
.default_value("english")
.value_name("LANGUAGE")
.takes_value(true)
.help(LANGUAGE_ARG.help)
}
fn no_passphrase_arg<'a, 'b>() -> Arg<'a, 'b> {
Arg::with_name(NO_PASSPHRASE_ARG.name)
.long(NO_PASSPHRASE_ARG.long)
.alias("no-passphrase")
.help(NO_PASSPHRASE_ARG.help)
}
fn no_outfile_arg<'a, 'b>() -> Arg<'a, 'b> {
Arg::with_name(NO_OUTFILE_ARG.name)
.long(NO_OUTFILE_ARG.long)
.conflicts_with_all(&["outfile", "silent"])
// Require a seed phrase to avoid generating a keypair
// but having no way to get the private key
.requires("use_mnemonic")
.help(NO_OUTFILE_ARG.help)
}
trait KeyGenerationCommonArgs {
fn key_generation_common_args(self) -> Self;
}
impl KeyGenerationCommonArgs for App<'_, '_> {
fn key_generation_common_args(self) -> Self {
self.arg(word_count_arg())
.arg(language_arg())
.arg(no_passphrase_arg())
.arg(no_outfile_arg())
}
}
fn check_for_overwrite(outfile: &str, matches: &ArgMatches) {
let force = matches.is_present("force");
if !force && Path::new(outfile).exists() {
eprintln!("Refusing to overwrite {} without --force flag", outfile);
exit(1);
}
}
fn get_keypair_from_matches(
matches: &ArgMatches,
config: Config,
wallet_manager: &mut Option<Arc<RemoteWalletManager>>,
) -> Result<Box<dyn Signer>, Box<dyn error::Error>> {
let mut path = dirs_next::home_dir().expect("home directory");
let path = if matches.is_present("keypair") {
matches.value_of("keypair").unwrap()
} else if !config.keypair_path.is_empty() {
&config.keypair_path
} else {
path.extend(&[".config", "solana", "id.json"]);
path.to_str().unwrap()
};
signer_from_path(matches, path, "pubkey recovery", wallet_manager)
}
fn output_keypair(
keypair: &Keypair,
outfile: &str,
source: &str,
) -> Result<(), Box<dyn error::Error>> {
if outfile == STDOUT_OUTFILE_TOKEN {
let mut stdout = std::io::stdout();
write_keypair(&keypair, &mut stdout)?;
} else {
write_keypair_file(&keypair, outfile)?;
println!("Wrote {} keypair to {}", source, outfile);
}
Ok(())
}
fn grind_validator_starts_with(v: String) -> Result<(), String> {
if v.matches(':').count() != 1 || (v.starts_with(':') || v.ends_with(':')) {
return Err(String::from("Expected : between PREFIX and COUNT"));
}
let args: Vec<&str> = v.split(':').collect();
bs58::decode(&args[0])
.into_vec()
.map_err(|err| format!("{}: {:?}", args[0], err))?;
let count = args[1].parse::<u64>();
if count.is_err() || count.unwrap() == 0 {
return Err(String::from("Expected COUNT to be of type u64"));
}
Ok(())
}
fn grind_validator_ends_with(v: String) -> Result<(), String> {
if v.matches(':').count() != 1 || (v.starts_with(':') || v.ends_with(':')) {
return Err(String::from("Expected : between SUFFIX and COUNT"));
}
let args: Vec<&str> = v.split(':').collect();
bs58::decode(&args[0])
.into_vec()
.map_err(|err| format!("{}: {:?}", args[0], err))?;
let count = args[1].parse::<u64>();
if count.is_err() || count.unwrap() == 0 {
return Err(String::from("Expected COUNT to be of type u64"));
}
Ok(())
}
fn grind_validator_starts_and_ends_with(v: String) -> Result<(), String> {
if v.matches(':').count() != 2 || (v.starts_with(':') || v.ends_with(':')) {
return Err(String::from(
"Expected : between PREFIX and SUFFIX and COUNT",
));
}
let args: Vec<&str> = v.split(':').collect();
bs58::decode(&args[0])
.into_vec()
.map_err(|err| format!("{}: {:?}", args[0], err))?;
bs58::decode(&args[1])
.into_vec()
.map_err(|err| format!("{}: {:?}", args[1], err))?;
let count = args[2].parse::<u64>();
if count.is_err() || count.unwrap() == 0 {
return Err(String::from("Expected COUNT to be a u64"));
}
Ok(())
}
fn acquire_language(matches: &ArgMatches<'_>) -> Language {
match matches.value_of(LANGUAGE_ARG.name).unwrap() {
"english" => Language::English,
"chinese-simplified" => Language::ChineseSimplified,
"chinese-traditional" => Language::ChineseTraditional,
"japanese" => Language::Japanese,
"spanish" => Language::Spanish,
"korean" => Language::Korean,
"french" => Language::French,
"italian" => Language::Italian,
_ => unreachable!(),
}
}
fn no_passphrase_and_message() -> (String, String) {
(NO_PASSPHRASE.to_string(), "".to_string())
}
fn acquire_passphrase_and_message(
matches: &ArgMatches<'_>,
) -> Result<(String, String), Box<dyn error::Error>> {
if matches.is_present(NO_PASSPHRASE_ARG.name) {
Ok(no_passphrase_and_message())
} else {
match prompt_passphrase(
"\nFor added security, enter a BIP39 passphrase\n\
\nNOTE! This passphrase improves security of the recovery seed phrase NOT the\n\
keypair file itself, which is stored as insecure plain text\n\
\nBIP39 Passphrase (empty for none): ",
) {
Ok(passphrase) => {
println!();
Ok((passphrase, " and your BIP39 passphrase".to_string()))
}
Err(e) => Err(e),
}
}
}
fn grind_print_info(grind_matches: &[GrindMatch], num_threads: usize) {
println!("Searching with {} threads for:", num_threads);
for gm in grind_matches {
let mut msg = Vec::<String>::new();
if gm.count.load(Ordering::Relaxed) > 1 {
msg.push("pubkeys".to_string());
msg.push("start".to_string());
msg.push("end".to_string());
} else {
msg.push("pubkey".to_string());
msg.push("starts".to_string());
msg.push("ends".to_string());
}
println!(
"\t{} {} that {} with '{}' and {} with '{}'",
gm.count.load(Ordering::Relaxed),
msg[0],
msg[1],
gm.starts,
msg[2],
gm.ends
);
}
}
fn grind_parse_args(
ignore_case: bool,
starts_with_args: HashSet<String>,
ends_with_args: HashSet<String>,
starts_and_ends_with_args: HashSet<String>,
num_threads: usize,
) -> Vec<GrindMatch> {
let mut grind_matches = Vec::<GrindMatch>::new();
for sw in starts_with_args {
let args: Vec<&str> = sw.split(':').collect();
grind_matches.push(GrindMatch {
starts: if ignore_case {
args[0].to_lowercase()
} else {
args[0].to_string()
},
ends: "".to_string(),
count: AtomicU64::new(args[1].parse::<u64>().unwrap()),
});
}
for ew in ends_with_args {
let args: Vec<&str> = ew.split(':').collect();
grind_matches.push(GrindMatch {
starts: "".to_string(),
ends: if ignore_case {
args[0].to_lowercase()
} else {
args[0].to_string()
},
count: AtomicU64::new(args[1].parse::<u64>().unwrap()),
});
}
for swew in starts_and_ends_with_args {
let args: Vec<&str> = swew.split(':').collect();
grind_matches.push(GrindMatch {
starts: if ignore_case {
args[0].to_lowercase()
} else {
args[0].to_string()
},
ends: if ignore_case {
args[1].to_lowercase()
} else {
args[1].to_string()
},
count: AtomicU64::new(args[2].parse::<u64>().unwrap()),
});
}
grind_print_info(&grind_matches, num_threads);
grind_matches
}
fn main() -> Result<(), Box<dyn error::Error>> {
let default_num_threads = num_cpus::get().to_string();
let matches = App::new(crate_name!())
.about(crate_description!())
.version(solana_version::version!())
.setting(AppSettings::SubcommandRequiredElseHelp)
.arg({
let arg = Arg::with_name("config_file")
.short("C")
.long("config")
.value_name("FILEPATH")
.takes_value(true)
.global(true)
.help("Configuration file to use");
if let Some(ref config_file) = *CONFIG_FILE {
arg.default_value(&config_file)
} else {
arg
}
})
.subcommand(
SubCommand::with_name("verify")
.about("Verify a keypair can sign and verify a message.")
.arg(
Arg::with_name("pubkey")
.index(1)
.value_name("PUBKEY")
.takes_value(true)
.required(true)
.help("Public key"),
)
.arg(
Arg::with_name("keypair")
.index(2)
.value_name("KEYPAIR")
.takes_value(true)
.help("Filepath or URL to a keypair"),
)
)
.subcommand(
SubCommand::with_name("new")
.about("Generate new keypair file from a random seed phrase and optional BIP39 passphrase")
.setting(AppSettings::DisableVersion)
.arg(
Arg::with_name("outfile")
.short("o")
.long("outfile")
.value_name("FILEPATH")
.takes_value(true)
.help("Path to generated file"),
)
.arg(
Arg::with_name("force")
.short("f")
.long("force")
.help("Overwrite the output file if it exists"),
)
.arg(
Arg::with_name("silent")
.short("s")
.long("silent")
.help("Do not display seed phrase. Useful when piping output to other programs that prompt for user input, like gpg"),
)
.key_generation_common_args()
)
.subcommand(
SubCommand::with_name("grind")
.about("Grind for vanity keypairs")
.setting(AppSettings::DisableVersion)
.arg(
Arg::with_name("ignore_case")
.long("ignore-case")
.help("Performs case insensitive matches"),
)
.arg(
Arg::with_name("starts_with")
.long("starts-with")
.value_name("PREFIX:COUNT")
.number_of_values(1)
.takes_value(true)
.multiple(true)
.validator(grind_validator_starts_with)
.help("Saves specified number of keypairs whos public key starts with the indicated prefix\nExample: --starts-with sol:4\nPREFIX type is Base58\nCOUNT type is u64"),
)
.arg(
Arg::with_name("ends_with")
.long("ends-with")
.value_name("SUFFIX:COUNT")
.number_of_values(1)
.takes_value(true)
.multiple(true)
.validator(grind_validator_ends_with)
.help("Saves specified number of keypairs whos public key ends with the indicated suffix\nExample: --ends-with ana:4\nSUFFIX type is Base58\nCOUNT type is u64"),
)
.arg(
Arg::with_name("starts_and_ends_with")
.long("starts-and-ends-with")
.value_name("PREFIX:SUFFIX:COUNT")
.number_of_values(1)
.takes_value(true)
.multiple(true)
.validator(grind_validator_starts_and_ends_with)
.help("Saves specified number of keypairs whos public key starts and ends with the indicated perfix and suffix\nExample: --starts-and-ends-with sol:ana:4\nPREFIX and SUFFIX type is Base58\nCOUNT type is u64"),
)
.arg(
Arg::with_name("num_threads")
.long("num-threads")
.value_name("NUMBER")
.takes_value(true)
.validator(is_parsable::<usize>)
.default_value(&default_num_threads)
.help("Specify the number of grind threads"),
)
.arg(
Arg::with_name("use_mnemonic")
.long("use-mnemonic")
.help("Generate using a mnemonic key phrase. Expect a significant slowdown in this mode"),
)
.key_generation_common_args()
)
.subcommand(
SubCommand::with_name("pubkey")
.about("Display the pubkey from a keypair file")
.setting(AppSettings::DisableVersion)
.arg(
Arg::with_name("keypair")
.index(1)
.value_name("KEYPAIR")
.takes_value(true)
.help("Filepath or URL to a keypair"),
)
.arg(
Arg::with_name(SKIP_SEED_PHRASE_VALIDATION_ARG.name)
.long(SKIP_SEED_PHRASE_VALIDATION_ARG.long)
.help(SKIP_SEED_PHRASE_VALIDATION_ARG.help),
)
.arg(
Arg::with_name("outfile")
.short("o")
.long("outfile")
.value_name("FILEPATH")
.takes_value(true)
.help("Path to generated file"),
)
.arg(
Arg::with_name("force")
.short("f")
.long("force")
.help("Overwrite the output file if it exists"),
)
)
.subcommand(
SubCommand::with_name("recover")
.about("Recover keypair from seed phrase and optional BIP39 passphrase")
.setting(AppSettings::DisableVersion)
.arg(
Arg::with_name("prompt_signer")
.index(1)
.value_name("KEYPAIR")
.takes_value(true)
.validator(is_prompt_signer_source)
.help("`prompt:` URI scheme or `ASK` keyword"),
)
.arg(
Arg::with_name("outfile")
.short("o")
.long("outfile")
.value_name("FILEPATH")
.takes_value(true)
.help("Path to generated file"),
)
.arg(
Arg::with_name("force")
.short("f")
.long("force")
.help("Overwrite the output file if it exists"),
)
.arg(
Arg::with_name(SKIP_SEED_PHRASE_VALIDATION_ARG.name)
.long(SKIP_SEED_PHRASE_VALIDATION_ARG.long)
.help(SKIP_SEED_PHRASE_VALIDATION_ARG.help),
),
)
.get_matches();
do_main(&matches).map_err(|err| DisplayError::new_as_boxed(err).into())
}
fn do_main(matches: &ArgMatches<'_>) -> Result<(), Box<dyn error::Error>> {
let config = if let Some(config_file) = matches.value_of("config_file") {
Config::load(config_file).unwrap_or_default()
} else {
Config::default()
};
let mut wallet_manager = None;
match matches.subcommand() {
("pubkey", Some(matches)) => {
let pubkey =
get_keypair_from_matches(matches, config, &mut wallet_manager)?.try_pubkey()?;
if matches.is_present("outfile") {
let outfile = matches.value_of("outfile").unwrap();
check_for_overwrite(&outfile, &matches);
write_pubkey_file(outfile, pubkey)?;
} else {
println!("{}", pubkey);
}
}
("new", Some(matches)) => {
let mut path = dirs_next::home_dir().expect("home directory");
let outfile = if matches.is_present("outfile") {
matches.value_of("outfile")
} else if matches.is_present(NO_OUTFILE_ARG.name) {
None
} else {
path.extend(&[".config", "solana", "id.json"]);
Some(path.to_str().unwrap())
};
match outfile {
Some(STDOUT_OUTFILE_TOKEN) => (),
Some(outfile) => check_for_overwrite(&outfile, &matches),
None => (),
}
let word_count = value_t!(matches.value_of(WORD_COUNT_ARG.name), usize).unwrap();
let mnemonic_type = MnemonicType::for_word_count(word_count)?;
let language = acquire_language(matches);
let silent = matches.is_present("silent");
if !silent {
println!("Generating a new keypair");
}
let mnemonic = Mnemonic::new(mnemonic_type, language);
let (passphrase, passphrase_message) = acquire_passphrase_and_message(matches).unwrap();
let seed = Seed::new(&mnemonic, &passphrase);
let keypair = keypair_from_seed(seed.as_bytes())?;
if let Some(outfile) = outfile {
output_keypair(&keypair, &outfile, "new")
.map_err(|err| format!("Unable to write {}: {}", outfile, err))?;
}
if !silent {
let phrase: &str = mnemonic.phrase();
let divider = String::from_utf8(vec![b'='; phrase.len()]).unwrap();
println!(
"{}\npubkey: {}\n{}\nSave this seed phrase{} to recover your new keypair:\n{}\n{}",
&divider, keypair.pubkey(), &divider, passphrase_message, phrase, &divider
);
}
}
("recover", Some(matches)) => {
let mut path = dirs_next::home_dir().expect("home directory");
let outfile = if matches.is_present("outfile") {
matches.value_of("outfile").unwrap()
} else {
path.extend(&[".config", "solana", "id.json"]);
path.to_str().unwrap()
};
if outfile != STDOUT_OUTFILE_TOKEN {
check_for_overwrite(&outfile, &matches);
}
let keypair_name = "recover";
let keypair = if let Some(path) = matches.value_of("prompt_signer") {
keypair_from_path(matches, path, keypair_name, true)?
} else {
let skip_validation = matches.is_present(SKIP_SEED_PHRASE_VALIDATION_ARG.name);
keypair_from_seed_phrase(keypair_name, skip_validation, true, None, true)?
};
output_keypair(&keypair, &outfile, "recovered")?;
}
("grind", Some(matches)) => {
let ignore_case = matches.is_present("ignore_case");
let starts_with_args = if matches.is_present("starts_with") {
values_t_or_exit!(matches, "starts_with", String)
.into_iter()
.map(|s| if ignore_case { s.to_lowercase() } else { s })
.collect()
} else {
HashSet::new()
};
let ends_with_args = if matches.is_present("ends_with") {
values_t_or_exit!(matches, "ends_with", String)
.into_iter()
.map(|s| if ignore_case { s.to_lowercase() } else { s })
.collect()
} else {
HashSet::new()
};
let starts_and_ends_with_args = if matches.is_present("starts_and_ends_with") {
values_t_or_exit!(matches, "starts_and_ends_with", String)
.into_iter()
.map(|s| if ignore_case { s.to_lowercase() } else { s })
.collect()
} else {
HashSet::new()
};
if starts_with_args.is_empty()
&& ends_with_args.is_empty()
&& starts_and_ends_with_args.is_empty()
{
eprintln!(
"Error: No keypair search criteria provided (--starts-with or --ends-with or --starts-and-ends-with)"
);
exit(1);
}
let num_threads = value_t_or_exit!(matches.value_of("num_threads"), usize);
let grind_matches = grind_parse_args(
ignore_case,
starts_with_args,
ends_with_args,
starts_and_ends_with_args,
num_threads,
);
let use_mnemonic = matches.is_present("use_mnemonic");
let word_count = value_t!(matches.value_of(WORD_COUNT_ARG.name), usize).unwrap();
let mnemonic_type = MnemonicType::for_word_count(word_count)?;
let language = acquire_language(matches);
let (passphrase, passphrase_message) = if use_mnemonic {
acquire_passphrase_and_message(matches).unwrap()
} else {
no_passphrase_and_message()
};
let no_outfile = matches.is_present(NO_OUTFILE_ARG.name);
let grind_matches_thread_safe = Arc::new(grind_matches);
let attempts = Arc::new(AtomicU64::new(1));
let found = Arc::new(AtomicU64::new(0));
let start = Instant::now();
let done = Arc::new(AtomicBool::new(false));
let thread_handles: Vec<_> = (0..num_threads)
.map(|_| {
let done = done.clone();
let attempts = attempts.clone();
let found = found.clone();
let grind_matches_thread_safe = grind_matches_thread_safe.clone();
let passphrase = passphrase.clone();
let passphrase_message = passphrase_message.clone();
thread::spawn(move || loop {
if done.load(Ordering::Relaxed) {
break;
}
let attempts = attempts.fetch_add(1, Ordering::Relaxed);
if attempts % 1_000_000 == 0 {
println!(
"Searched {} keypairs in {}s. {} matches found.",
attempts,
start.elapsed().as_secs(),
found.load(Ordering::Relaxed),
);
}
let (keypair, phrase) = if use_mnemonic {
let mnemonic = Mnemonic::new(mnemonic_type, language);
let seed = Seed::new(&mnemonic, &passphrase);
(keypair_from_seed(seed.as_bytes()).unwrap(), mnemonic.phrase().to_string())
} else {
(Keypair::new(), "".to_string())
};
let mut pubkey = bs58::encode(keypair.pubkey()).into_string();
if ignore_case {
pubkey = pubkey.to_lowercase();
}
let mut total_matches_found = 0;
for i in 0..grind_matches_thread_safe.len() {
if grind_matches_thread_safe[i].count.load(Ordering::Relaxed) == 0 {
total_matches_found += 1;
continue;
}
if (!grind_matches_thread_safe[i].starts.is_empty()
&& grind_matches_thread_safe[i].ends.is_empty()
&& pubkey.starts_with(&grind_matches_thread_safe[i].starts))
|| (grind_matches_thread_safe[i].starts.is_empty()
&& !grind_matches_thread_safe[i].ends.is_empty()
&& pubkey.ends_with(&grind_matches_thread_safe[i].ends))
|| (!grind_matches_thread_safe[i].starts.is_empty()
&& !grind_matches_thread_safe[i].ends.is_empty()
&& pubkey.starts_with(&grind_matches_thread_safe[i].starts)
&& pubkey.ends_with(&grind_matches_thread_safe[i].ends))
{
let _found = found.fetch_add(1, Ordering::Relaxed);
grind_matches_thread_safe[i]
.count
.fetch_sub(1, Ordering::Relaxed);
if !no_outfile {
write_keypair_file(&keypair, &format!("{}.json", keypair.pubkey()))
.unwrap();
println!(
"Wrote keypair to {}",
&format!("{}.json", keypair.pubkey())
);
}
if use_mnemonic {
let divider = String::from_utf8(vec![b'='; phrase.len()]).unwrap();
println!(
"{}\nFound matching key {}",
&divider, keypair.pubkey());
println!(
"\nSave this seed phrase{} to recover your new keypair:\n{}\n{}",
passphrase_message, phrase, &divider
);
}
}
}
if total_matches_found == grind_matches_thread_safe.len() {
done.store(true, Ordering::Relaxed);
}
})
})
.collect();
for thread_handle in thread_handles {
thread_handle.join().unwrap();
}
}
("verify", Some(matches)) => {
let keypair = get_keypair_from_matches(matches, config, &mut wallet_manager)?;
let simple_message = Message::new(
&[Instruction::new_with_bincode(
Pubkey::default(),
&0,
vec![AccountMeta::new(keypair.pubkey(), true)],
)],
Some(&keypair.pubkey()),
)
.serialize();
let signature = keypair.try_sign_message(&simple_message)?;
let pubkey_bs58 = matches.value_of("pubkey").unwrap();
let pubkey = bs58::decode(pubkey_bs58).into_vec().unwrap();
if signature.verify(&pubkey, &simple_message) {
println!("Verification for public key: {}: Success", pubkey_bs58);
} else {
println!("Verification for public key: {}: Failed", pubkey_bs58);
exit(1);
}
}
_ => unreachable!(),
}
Ok(())
}
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