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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "ask-password-api.h"
#include "cryptenroll-password.h"
#include "escape.h"
#include "memory-util.h"
#include "pwquality-util.h"
#include "strv.h"
int enroll_password(
struct crypt_device *cd,
const void *volume_key,
size_t volume_key_size) {
_cleanup_(erase_and_freep) char *new_password = NULL;
_cleanup_free_ char *error = NULL;
const char *node;
int r, keyslot;
char *e;
assert_se(node = crypt_get_device_name(cd));
e = getenv("NEWPASSWORD");
if (e) {
new_password = strdup(e);
if (!new_password)
return log_oom();
string_erase(e);
assert_se(unsetenv("NEWPASSWORD") == 0);
} else {
_cleanup_free_ char *disk_path = NULL;
unsigned i = 5;
const char *id;
assert_se(node = crypt_get_device_name(cd));
(void) suggest_passwords();
disk_path = cescape(node);
if (!disk_path)
return log_oom();
id = strjoina("cryptsetup:", disk_path);
for (;;) {
_cleanup_strv_free_erase_ char **passwords = NULL, **passwords2 = NULL;
_cleanup_free_ char *question = NULL;
if (--i == 0)
return log_error_errno(SYNTHETIC_ERRNO(ENOKEY),
"Too many attempts, giving up:");
question = strjoin("Please enter new passphrase for disk ", node, ":");
if (!question)
return log_oom();
r = ask_password_auto(question, "drive-harddisk", id, "cryptenroll", "cryptenroll.new-passphrase", USEC_INFINITY, 0, &passwords);
if (r < 0)
return log_error_errno(r, "Failed to query password: %m");
assert(strv_length(passwords) == 1);
free(question);
question = strjoin("Please enter new passphrase for disk ", node, " (repeat):");
if (!question)
return log_oom();
r = ask_password_auto(question, "drive-harddisk", id, "cryptenroll", "cryptenroll.new-passphrase", USEC_INFINITY, 0, &passwords2);
if (r < 0)
return log_error_errno(r, "Failed to query password: %m");
assert(strv_length(passwords2) == 1);
if (strv_equal(passwords, passwords2)) {
new_password = passwords2[0];
passwords2 = mfree(passwords2);
break;
}
log_error("Password didn't match, try again.");
}
}
r = quality_check_password(new_password, NULL, &error);
if (r < 0)
return log_error_errno(r, "Failed to check password for quality: %m");
if (r == 0)
log_warning_errno(r, "Specified password does not pass quality checks (%s), proceeding anyway.", error);
keyslot = crypt_keyslot_add_by_volume_key(
cd,
CRYPT_ANY_SLOT,
volume_key,
volume_key_size,
new_password,
strlen(new_password));
if (keyslot < 0)
return log_error_errno(keyslot, "Failed to add new password to %s: %m", node);
log_info("New password enrolled as key slot %i.", keyslot);
return keyslot;
}
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