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hsmtool: reuse read_stdin_pass for generatehsm passphrase

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Signed-off-by: Antoine Poinsot <darosior@protonmail.com>
This commit is contained in:
Antoine Poinsot 2021-01-02 23:41:24 +01:00 • committed by Christian Decker
parent 1513a2d07e
commit dd1def335c
1 changed files with 11 additions and 43 deletions
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54
tools/hsmtool.c
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@ -504,53 +504,21 @@ static void read_mnemonic(char *mnemonic) {
} }
} }
static void read_passphrase(char **passphrase) {
struct termios current_term, temp_term;
printf("Warning: remember that different passphrases yield different "
"bitcoin wallets.\n");
printf("If left empty, no password is used (echo is "
"disabled now).\n");
printf("Enter your passphrase: \n");
/* Change terminal options so we do not echo the passphrase */
if (tcgetattr(fileno(stdin), &current_term) != 0)
errx(ERROR_USAGE, "Could not get current terminal options.");
temp_term = current_term;
temp_term.c_lflag &= ~ECHO;
if (tcsetattr(fileno(stdin), TCSAFLUSH, &temp_term) != 0)
errx(ERROR_USAGE, "Could not disable passphrase echoing.");
/* If we don't flush we might end up being buffered and we might seem
* to hang while we wait for the password. */
fflush(stdout);
size_t passphrase_size = 0;
size_t characters = getline(passphrase, &passphrase_size, stdin);
if (characters < 0)
errx(ERROR_USAGE, "Could not read passphrase from stdin.");
/* Newline is not part of the valid passphrase */
if ( (*passphrase)[characters-1] == '\n' ) {
(*passphrase)[characters-1] = '\0';
}
/* If the user did not introduce any password, we want to set passphrase
* to NULL not to '\0' for libwally */
if (strlen(*passphrase) == 0) {
free(*passphrase);
*passphrase = NULL;
}
if (tcsetattr(fileno(stdin), TCSAFLUSH, &current_term) != 0)
errx(ERROR_USAGE, "Could not restore terminal options.");
}
static int generate_hsm(const char *hsm_secret_path) static int generate_hsm(const char *hsm_secret_path)
{ {
char mnemonic[BIP39_WORDLIST_LEN]; char mnemonic[BIP39_WORDLIST_LEN];
read_mnemonic(mnemonic); char *passphrase;
char *passphrase = NULL; read_mnemonic(mnemonic);
read_passphrase(&passphrase); printf("Warning: remember that different passphrases yield different "
"bitcoin wallets.\n");
printf("If left empty, no password is used (echo is disabled).\n");
printf("Enter your passphrase: \n");
passphrase = read_stdin_pass();
if (strlen(passphrase) == 0) {
free(passphrase);
passphrase = NULL;
}
u8 bip32_seed[BIP39_SEED_LEN_512]; u8 bip32_seed[BIP39_SEED_LEN_512];
size_t bip32_seed_len; size_t bip32_seed_len;