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-rw-r--r--src/libsystemd-network/sd-dhcp-lease.c59
1 files changed, 26 insertions, 33 deletions
diff --git a/src/libsystemd-network/sd-dhcp-lease.c b/src/libsystemd-network/sd-dhcp-lease.c
index f2e6cb0ddc..37e187c738 100644
--- a/src/libsystemd-network/sd-dhcp-lease.c
+++ b/src/libsystemd-network/sd-dhcp-lease.c
@@ -489,59 +489,52 @@ int dhcp_lease_parse_options(uint8_t code, uint8_t len, const uint8_t *option, v
lease_parse_u16(option, len, &lease->boot_file_size, 0);
break;
- case DHCP_OPTION_DOMAIN_NAME:
- {
- _cleanup_free_ char *domainname = NULL;
- char *e;
+ case DHCP_OPTION_DOMAIN_NAME: {
+ _cleanup_free_ char *domainname = NULL, *normalized = NULL;
r = lease_parse_string(option, len, &domainname);
if (r < 0)
return r;
- /* Chop off trailing dot of domain name that some DHCP
- * servers send us back. Internally we want to store
- * host names without trailing dots and
- * host_name_is_valid() doesn't accept them. */
- e = endswith(domainname, ".");
- if (e)
- *e = 0;
-
- if (is_localhost(domainname))
- break;
+ r = dns_name_normalize(domainname, &normalized);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to normalize domain name '%s': %m", domainname);
+ return 0;
+ }
- r = dns_name_is_valid(domainname);
- if (r <= 0) {
- if (r < 0)
- log_error_errno(r, "Failed to validate domain name: %s: %m", domainname);
- if (r == 0)
- log_warning("Domain name is not valid, ignoring: %s", domainname);
+ if (is_localhost(normalized)) {
+ log_debug_errno(r, "Detected 'localhost' as suggested hostname, ignoring.");
break;
}
free(lease->domainname);
- lease->domainname = domainname;
- domainname = NULL;
+ lease->domainname = normalized;
+ normalized = NULL;
break;
}
- case DHCP_OPTION_HOST_NAME:
- {
- _cleanup_free_ char *hostname = NULL;
- char *e;
+
+ case DHCP_OPTION_HOST_NAME: {
+ _cleanup_free_ char *hostname = NULL, *normalized = NULL;
r = lease_parse_string(option, len, &hostname);
if (r < 0)
return r;
- e = endswith(hostname, ".");
- if (e)
- *e = 0;
+ r = dns_name_normalize(hostname, &normalized);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to normalize host name '%s': %m", hostname);
+ return 0;
+ }
- if (!hostname_is_valid(hostname, false) || is_localhost(hostname))
- break;
+ if (is_localhost(normalized)) {
+ log_debug_errno(r, "Detected 'localhost' as suggested hostname, ignoring.");
+ return 0;
+ }
- free_and_replace(&lease->hostname, hostname);
- hostname = NULL;
+ free(lease->hostname);
+ lease->hostname = normalized;
+ normalized = NULL;
break;
}