int dhcp4_set_client_identifier(Link *link) {
int r;
assert(link);
assert(link->network);
assert(link->dhcp_client);
switch (link->network->dhcp_client_identifier) {
case DHCP_CLIENT_ID_DUID: {
/* If configured, apply user specified DUID and IAID */
const DUID *duid = link_get_duid(link);
if (duid->type == DUID_TYPE_LLT && duid->raw_data_len == 0)
r = sd_dhcp_client_set_iaid_duid_llt(link->dhcp_client,
link->network->iaid_set,
link->network->iaid,
duid->llt_time);
else
r = sd_dhcp_client_set_iaid_duid(link->dhcp_client,
link->network->iaid_set,
link->network->iaid,
duid->type,
duid->raw_data_len > 0 ? duid->raw_data : NULL,
duid->raw_data_len);
if (r < 0)
return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set IAID+DUID: %m");
break;
}
case DHCP_CLIENT_ID_DUID_ONLY: {
/* If configured, apply user specified DUID */
const DUID *duid = link_get_duid(link);
if (duid->type == DUID_TYPE_LLT && duid->raw_data_len == 0)
r = sd_dhcp_client_set_duid_llt(link->dhcp_client,
duid->llt_time);
else
r = sd_dhcp_client_set_duid(link->dhcp_client,
duid->type,
duid->raw_data_len > 0 ? duid->raw_data : NULL,
duid->raw_data_len);
if (r < 0)
return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set DUID: %m");
break;
}
case DHCP_CLIENT_ID_MAC:
r = sd_dhcp_client_set_client_id(link->dhcp_client,
ARPHRD_ETHER,
(const uint8_t *) &link->mac,
sizeof(link->mac));
if (r < 0)
return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set client ID: %m");
break;
default:
assert_not_reached("Unknown client identifier type.");
}
return 0;
}
int dhcp4_configure(Link *link) {
int r;
assert(link);
assert(link->network);
assert(link->network->dhcp & ADDRESS_FAMILY_IPV4);
if (!link->dhcp_client) {
r = sd_dhcp_client_new(&link->dhcp_client, link->network->dhcp_anonymize);
if (r < 0)
return r;
}
r = sd_dhcp_client_attach_event(link->dhcp_client, NULL, 0);
if (r < 0)
return r;
r = sd_dhcp_client_set_mac(link->dhcp_client,
(const uint8_t *) &link->mac,
sizeof (link->mac), ARPHRD_ETHER);
if (r < 0)
return r;
r = sd_dhcp_client_set_ifindex(link->dhcp_client, link->ifindex);
if (r < 0)
return r;
r = sd_dhcp_client_set_callback(link->dhcp_client, dhcp4_handler, link);
if (r < 0)
return r;
r = sd_dhcp_client_set_request_broadcast(link->dhcp_client,
link->network->dhcp_broadcast);
if (r < 0)
return r;
if (link->mtu) {
r = sd_dhcp_client_set_mtu(link->dhcp_client, link->mtu);
if (r < 0)
return r;
}
if (link->network->dhcp_use_mtu) {
r = sd_dhcp_client_set_request_option(link->dhcp_client,
SD_DHCP_OPTION_INTERFACE_MTU);
if (r < 0)
return r;
}
/* NOTE: even if this variable is called "use", it also "sends" PRL
* options, maybe there should be a different configuration variable
* to send or not route options?. */
/* NOTE: when using Anonymize=yes, routes PRL options are sent
* by default, so they don't need to be added here. */
if (link->network->dhcp_use_routes && !link->network->dhcp_anonymize) {
r = sd_dhcp_client_set_request_option(link->dhcp_client,
SD_DHCP_OPTION_STATIC_ROUTE);
if (r < 0)
return r;
r = sd_dhcp_client_set_request_option(link->dhcp_client,
SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE);
if (r < 0)
return r;
}
if (link->network->dhcp_use_ntp) {
r = sd_dhcp_client_set_request_option(link->dhcp_client, SD_DHCP_OPTION_NTP_SERVER);
if (r < 0)
return r;
}
if (link->network->dhcp_use_timezone) {
r = sd_dhcp_client_set_request_option(link->dhcp_client, SD_DHCP_OPTION_NEW_TZDB_TIMEZONE);
if (r < 0)
return r;
}
r = dhcp4_set_hostname(link);
if (r < 0)
return r;
if (link->network->dhcp_vendor_class_identifier) {
r = sd_dhcp_client_set_vendor_class_identifier(link->dhcp_client,
link->network->dhcp_vendor_class_identifier);
if (r < 0)
return r;
}
if (link->network->dhcp_client_port) {
r = sd_dhcp_client_set_client_port(link->dhcp_client, link->network->dhcp_client_port);
if (r < 0)
return r;
}
switch (link->network->dhcp_client_identifier) {
case DHCP_CLIENT_ID_DUID: {
/* If configured, apply user specified DUID and/or IAID */
const DUID *duid = link_duid(link);
r = sd_dhcp_client_set_iaid_duid(link->dhcp_client,
link->network->iaid,
duid->type,
duid->raw_data_len > 0 ? duid->raw_data : NULL,
duid->raw_data_len);
if (r < 0)
return r;
break;
}
case DHCP_CLIENT_ID_DUID_ONLY: {
/* If configured, apply user specified DUID */
const DUID *duid = link_duid(link);
r = sd_dhcp_client_set_duid(link->dhcp_client,
duid->type,
duid->raw_data_len > 0 ? duid->raw_data : NULL,
duid->raw_data_len);
if (r < 0)
return r;
break;
}
case DHCP_CLIENT_ID_MAC:
r = sd_dhcp_client_set_client_id(link->dhcp_client,
ARPHRD_ETHER,
(const uint8_t *) &link->mac,
sizeof(link->mac));
if (r < 0)
return r;
break;
default:
assert_not_reached("Unknown client identifier type.");
}
return 0;
}