Пример #1
0
bool passdb_cache_lookup_credentials(struct auth_request *request,
				     const char *key, const char **password_r,
				     const char **scheme_r,
				     enum passdb_result *result_r,
				     bool use_expired)
{
	const char *value, *const *list;
	struct auth_cache_node *node;
	bool expired, neg_expired;

	if (passdb_cache == NULL)
		return FALSE;

	value = auth_cache_lookup(passdb_cache, request, key, &node,
				  &expired, &neg_expired);
	if (value == NULL || (expired && !use_expired)) {
		auth_request_log_debug(request, AUTH_SUBSYS_DB,
				       value == NULL ? "cache miss" :
				       "cache expired");
		return FALSE;
	}
	passdb_cache_log_hit(request, value);

	if (*value == '\0') {
		/* negative cache entry */
		*result_r = PASSDB_RESULT_USER_UNKNOWN;
		*password_r = NULL;
		*scheme_r = NULL;
		return TRUE;
	}

	list = t_strsplit_tab(value);
	auth_request_set_fields(request, list + 1, NULL);

	*result_r = PASSDB_RESULT_OK;
	*password_r = *list[0] == '\0' ? NULL : list[0];
	*scheme_r = password_get_scheme(password_r);
	i_assert(*scheme_r != NULL || *password_r == NULL);
	return TRUE;
}
Пример #2
0
static bool
passdb_cache_lookup(struct auth_request *request, const char *key,
		    bool use_expired, struct auth_cache_node **node_r,
		    const char **value_r, bool *neg_expired_r)
{
	const char *value;
	bool expired;

	/* value = password \t ... */
	value = auth_cache_lookup(passdb_cache, request, key, node_r,
				  &expired, neg_expired_r);
	if (value == NULL || (expired && !use_expired)) {
		auth_request_log_debug(request, AUTH_SUBSYS_DB,
				       value == NULL ? "cache miss" :
				       "cache expired");
		return FALSE;
	}
	passdb_cache_log_hit(request, value);

	*value_r = value;
	return TRUE;
}
Пример #3
0
bool passdb_cache_verify_plain(struct auth_request *request, const char *key,
			       const char *password,
			       enum passdb_result *result_r, int use_expired)
{
	const char *value, *cached_pw, *scheme, *const *list;
	struct auth_cache_node *node;
	int ret;
	bool expired, neg_expired;

	if (passdb_cache == NULL || key == NULL)
		return FALSE;

	/* value = password \t ... */
	value = auth_cache_lookup(passdb_cache, request, key, &node,
				  &expired, &neg_expired);
	if (value == NULL || (expired && !use_expired)) {
		auth_request_log_debug(request, AUTH_SUBSYS_DB,
				       value == NULL ? "cache miss" :
				       "cache expired");
		return FALSE;
	}
	passdb_cache_log_hit(request, value);

	if (*value == '\0') {
		/* negative cache entry */
		auth_request_log_unknown_user(request, AUTH_SUBSYS_DB);
		*result_r = PASSDB_RESULT_USER_UNKNOWN;
		return TRUE;
	}

	list = t_strsplit_tab(value);

	cached_pw = list[0];
	if (*cached_pw == '\0') {
		/* NULL password */
		auth_request_log_info(request, AUTH_SUBSYS_DB,
				      "Cached NULL password access");
		ret = 1;
	} else {
		scheme = password_get_scheme(&cached_pw);
		i_assert(scheme != NULL);

		ret = auth_request_password_verify(request, password, cached_pw,
						   scheme, AUTH_SUBSYS_DB);

		if (ret == 0 && (node->last_success || neg_expired)) {
			/* a) the last authentication was successful. assume
			   that the password was changed and cache is expired.
			   b) negative TTL reached, use it for password
			   mismatches too. */
			node->last_success = FALSE;
			return FALSE;
		}
	}
	node->last_success = ret > 0;

	/* save the extra_fields only after we know we're using the
	   cached data */
	auth_request_set_fields(request, list + 1, NULL);

	*result_r = ret > 0 ? PASSDB_RESULT_OK :
		PASSDB_RESULT_PASSWORD_MISMATCH;
	return TRUE;
}