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Code

pkcs11-util: split pkcs11_token_login function

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Future systemd-pkcs11 plugin requires unlock via single
call with supplied pin. To reduce needless code duplication
in plugin itself split original pkcs_11_token_login call in
two calls:

new pkcs11_token_login_by_pin and the former where loop
for retrying via PIN query callback remains.
This commit is contained in:
Ondrej Kozina 2021-06-04 16:21:30 +02:00
parent ed3d3af148
commit 0ff605665a
2 changed files with 65 additions and 37 deletions
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101
src/shared/pkcs11-util.c
View File

@ -175,6 +175,55 @@ char *pkcs11_token_model(const CK_TOKEN_INFO *token_info) {
return t;
}
int pkcs11_token_login_by_pin(
CK_FUNCTION_LIST *m,
CK_SESSION_HANDLE session,
const CK_TOKEN_INFO *token_info,
const char *token_label,
const void *pin,
size_t pin_size) {
CK_RV rv;
assert(m);
assert(token_info);
if (FLAGS_SET(token_info->flags, CKF_PROTECTED_AUTHENTICATION_PATH)) {
rv = m->C_Login(session, CKU_USER, NULL, 0);
if (rv != CKR_OK)
return log_error_errno(SYNTHETIC_ERRNO(EIO),
"Failed to log into security token '%s': %s", token_label, p11_kit_strerror(rv));
log_info("Successfully logged into security token '%s' via protected authentication path.", token_label);
return 0;
}
if (!FLAGS_SET(token_info->flags, CKF_LOGIN_REQUIRED)) {
log_info("No login into security token '%s' required.", token_label);
return 0;
}
if (!pin)
return -ENOANO;
rv = m->C_Login(session, CKU_USER, (CK_UTF8CHAR*) pin, pin_size);
if (rv == CKR_OK) {
log_info("Successfully logged into security token '%s'.", token_label);
return 0;
}
if (rv == CKR_PIN_LOCKED)
return log_error_errno(SYNTHETIC_ERRNO(EPERM),
"PIN has been locked, please reset PIN of security token '%s'.", token_label);
if (!IN_SET(rv, CKR_PIN_INCORRECT, CKR_PIN_LEN_RANGE))
return log_error_errno(SYNTHETIC_ERRNO(EIO),
"Failed to log into security token '%s': %s", token_label, p11_kit_strerror(rv));
log_notice("PIN for token '%s' is incorrect, please try again.", token_label);
return -ENOLCK;
}
int pkcs11_token_login(
CK_FUNCTION_LIST *m,
CK_SESSION_HANDLE session,
@ -209,24 +258,12 @@ int pkcs11_token_login(
if (uri_result != P11_KIT_URI_OK)
return log_warning_errno(SYNTHETIC_ERRNO(EAGAIN), "Failed to format slot URI: %s", p11_kit_uri_message(uri_result));
if (FLAGS_SET(token_info->flags, CKF_PROTECTED_AUTHENTICATION_PATH)) {
rv = m->C_Login(session, CKU_USER, NULL, 0);
if (rv != CKR_OK)
return log_error_errno(SYNTHETIC_ERRNO(EIO),
"Failed to log into security token '%s': %s", token_label, p11_kit_strerror(rv));
r = pkcs11_token_login_by_pin(m, session, token_info, token_label, /* pin= */ NULL, 0);
if (r == 0 && ret_used_pin)
*ret_used_pin = NULL;
log_info("Successfully logged into security token '%s' via protected authentication path.", token_label);
if (ret_used_pin)
*ret_used_pin = NULL;
return 0;
}
if (!FLAGS_SET(token_info->flags, CKF_LOGIN_REQUIRED)) {
log_info("No login into security token '%s' required.", token_label);
if (ret_used_pin)
*ret_used_pin = NULL;
return 0;
}
if (r != -ENOANO) /* pin required */
return r;
token_uri_escaped = cescape(token_uri_string);
if (!token_uri_escaped)
@ -278,28 +315,19 @@ int pkcs11_token_login(
}
STRV_FOREACH(i, passwords) {
rv = m->C_Login(session, CKU_USER, (CK_UTF8CHAR*) *i, strlen(*i));
if (rv == CKR_OK) {
r = pkcs11_token_login_by_pin(m, session, token_info, token_label, *i, strlen(*i));
if (r == 0 && ret_used_pin) {
char *c;
if (ret_used_pin) {
char *c;
c = strdup(*i);
if (!c)
return log_oom();
c = strdup(*i);
if (!c)
return log_oom();
*ret_used_pin = c;
}
log_info("Successfully logged into security token '%s'.", token_label);
return 0;
*ret_used_pin = c;
}
if (rv == CKR_PIN_LOCKED)
return log_error_errno(SYNTHETIC_ERRNO(EPERM),
"PIN has been locked, please reset PIN of security token '%s'.", token_label);
if (!IN_SET(rv, CKR_PIN_INCORRECT, CKR_PIN_LEN_RANGE))
return log_error_errno(SYNTHETIC_ERRNO(EIO),
"Failed to log into security token '%s': %s", token_label, p11_kit_strerror(rv));
if (r != -ENOLCK)
return r;
/* Referesh the token info, so that we can prompt knowing the new flags if they changed. */
rv = m->C_GetTokenInfo(slotid, &updated_token_info);
@ -309,7 +337,6 @@ int pkcs11_token_login(
slotid, p11_kit_strerror(rv));
token_info = &updated_token_info;
log_notice("PIN for token '%s' is incorrect, please try again.", token_label);
}
}

1
src/shared/pkcs11-util.h
View File

@ -30,6 +30,7 @@ char *pkcs11_token_label(const CK_TOKEN_INFO *token_info);
char *pkcs11_token_manufacturer_id(const CK_TOKEN_INFO *token_info);
char *pkcs11_token_model(const CK_TOKEN_INFO *token_info);
int pkcs11_token_login_by_pin(CK_FUNCTION_LIST *m, CK_SESSION_HANDLE session, const CK_TOKEN_INFO *token_info, const char *token_label, const void *pin, size_t pin_size);
int pkcs11_token_login(CK_FUNCTION_LIST *m, CK_SESSION_HANDLE session, CK_SLOT_ID slotid, const CK_TOKEN_INFO *token_info, const char *friendly_name, const char *icon_name, const char *key_name, const char *credential_name, usec_t until, bool headless, char **ret_used_pin);
int pkcs11_token_find_x509_certificate(CK_FUNCTION_LIST *m, CK_SESSION_HANDLE session, P11KitUri *search_uri, CK_OBJECT_HANDLE *ret_object);