--- /dev/null
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include "alloc-util.h"
+#include "ether-addr-util.h"
+#include "hashmap.h"
+#include "networkd-dhcp-server-static-lease.h"
+#include "networkd-network.h"
+#include "networkd-util.h"
+
+DEFINE_NETWORK_SECTION_FUNCTIONS(DHCPStaticLease, dhcp_static_lease_free);
+
+DHCPStaticLease *dhcp_static_lease_free(DHCPStaticLease *static_lease) {
+ if (!static_lease)
+ return NULL;
+
+ if (static_lease->network && static_lease->section)
+ hashmap_remove(static_lease->network->dhcp_static_leases_by_section, static_lease->section);
+
+ network_config_section_free(static_lease->section);
+ free(static_lease->client_id);
+ return mfree(static_lease);
+}
+
+static int dhcp_static_lease_new(DHCPStaticLease **ret) {
+ DHCPStaticLease *p;
+
+ assert(ret);
+
+ p = new0(DHCPStaticLease, 1);
+ if (!p)
+ return -ENOMEM;
+
+ *ret = TAKE_PTR(p);
+ return 0;
+}
+
+static int lease_new_static(Network *network, const char *filename, unsigned section_line, DHCPStaticLease **ret) {
+ _cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL;
+ _cleanup_(dhcp_static_lease_freep) DHCPStaticLease *static_lease = NULL;
+ int r;
+
+ assert(network);
+ assert(filename);
+ assert(section_line > 0);
+ assert(ret);
+
+ r = network_config_section_new(filename, section_line, &n);
+ if (r < 0)
+ return r;
+
+ static_lease = hashmap_get(network->dhcp_static_leases_by_section, n);
+ if (static_lease) {
+ *ret = TAKE_PTR(static_lease);
+ return 0;
+ }
+
+ r = dhcp_static_lease_new(&static_lease);
+ if (r < 0)
+ return r;
+
+ static_lease->network = network;
+ static_lease->section = TAKE_PTR(n);
+ r = hashmap_ensure_put(&network->dhcp_static_leases_by_section, &network_config_hash_ops, static_lease->section, static_lease);
+ if (r < 0)
+ return r;
+
+ *ret = TAKE_PTR(static_lease);
+ return 0;
+}
+
+static int static_lease_verify(DHCPStaticLease *static_lease) {
+ if (section_is_invalid(static_lease->section))
+ return -EINVAL;
+
+ if (in4_addr_is_null(&static_lease->address))
+ return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
+ "%s: DHCP static lease without Address= field configured. "
+ "Ignoring [DHCPServerStaticLease] section from line %u.",
+ static_lease->section->filename, static_lease->section->line);
+
+ /* TODO: check that the address is in the pool. */
+
+ if (static_lease->client_id_size == 0 || !static_lease->client_id)
+ return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
+ "%s: DHCP static lease without MACAddress= field configured. "
+ "Ignoring [DHCPServerStaticLease] section from line %u.",
+ static_lease->section->filename, static_lease->section->line);
+
+ assert(static_lease->client_id_size == ETH_ALEN + 1);
+
+ return 0;
+}
+
+void network_drop_invalid_static_leases(Network *network) {
+ DHCPStaticLease *static_lease;
+
+ assert(network);
+
+ HASHMAP_FOREACH(static_lease, network->dhcp_static_leases_by_section)
+ if (static_lease_verify(static_lease) < 0)
+ dhcp_static_lease_free(static_lease);
+}
+
+int config_parse_dhcp_static_lease_address(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ _cleanup_(dhcp_static_lease_free_or_set_invalidp) DHCPStaticLease *lease = NULL;
+ Network *network = userdata;
+ union in_addr_union addr;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(network);
+
+ r = lease_new_static(network, filename, section_line, &lease);
+ if (r < 0)
+ return log_oom();
+
+ if (isempty(rvalue)) {
+ lease->address.s_addr = 0;
+ TAKE_PTR(lease);
+ return 0;
+ }
+
+ r = in_addr_from_string(AF_INET, rvalue, &addr);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse IPv4 address for DHCPv4 static lease, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+ if (in4_addr_is_null(&addr.in)) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "IPv4 address for DHCPv4 static lease cannot be the ANY address, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+
+ lease->address = addr.in;
+
+ TAKE_PTR(lease);
+ return 0;
+}
+
+int config_parse_dhcp_static_lease_hwaddr(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ _cleanup_(dhcp_static_lease_free_or_set_invalidp) DHCPStaticLease *lease = NULL;
+ Network *network = userdata;
+ struct ether_addr hwaddr;
+ uint8_t *c;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(network);
+
+ r = lease_new_static(network, filename, section_line, &lease);
+ if (r < 0)
+ return log_oom();
+
+ if (isempty(rvalue)) {
+ lease->client_id = mfree(lease->client_id);
+ lease->client_id_size = 0;
+ return 0;
+ }
+
+ r = ether_addr_from_string(rvalue, &hwaddr);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse MAC address for DHCPv4 static lease, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+ if (ether_addr_is_null(&hwaddr) || (hwaddr.ether_addr_octet[0] & 0x01)) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "MAC address for DHCPv4 static lease cannot be null or multicast, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+
+ c = new(uint8_t, ETH_ALEN + 1);
+ if (!c)
+ return log_oom();
+
+ /* set client id type to 1: Ethernet Link-Layer (RFC 2132) */
+ c[0] = 0x01;
+ memcpy(c + 1, &hwaddr, ETH_ALEN);
+
+ free_and_replace(lease->client_id, c);
+ lease->client_id_size = ETH_ALEN + 1;
+
+ TAKE_PTR(lease);
+ return 0;
+}
#include "fd-util.h"
#include "fileio.h"
#include "networkd-address.h"
-#include "networkd-dhcp-server.h"
#include "networkd-dhcp-server-bus.h"
+#include "networkd-dhcp-server-static-lease.h"
+#include "networkd-dhcp-server.h"
#include "networkd-link.h"
#include "networkd-manager.h"
#include "networkd-network.h"
int dhcp4_server_configure(Link *link) {
bool acquired_uplink = false;
sd_dhcp_option *p;
+ DHCPStaticLease *static_lease;
Link *uplink = NULL;
Address *address;
bool bind_to_interface;
return log_link_error_errno(link, r, "Failed to set DHCPv4 option: %m");
}
+ HASHMAP_FOREACH(static_lease, link->network->dhcp_static_leases_by_section) {
+ r = sd_dhcp_server_set_static_lease(link->dhcp_server, &static_lease->address, static_lease->client_id, static_lease->client_id_size);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Failed to set DHCPv4 static lease for DHCP server: %m");
+ }
+
if (!sd_dhcp_server_is_running(link->dhcp_server)) {
r = sd_dhcp_server_start(link->dhcp_server);
if (r < 0)
#include "networkd-bridge-fdb.h"
#include "networkd-can.h"
#include "networkd-dhcp-common.h"
+#include "networkd-dhcp-server-static-lease.h"
#include "networkd-dhcp-server.h"
#include "networkd-dhcp4.h"
#include "networkd-dhcp6.h"
DHCPServer.SendVendorOption, config_parse_dhcp_send_option, 0, offsetof(Network, dhcp_server_send_vendor_options)
DHCPServer.SendOption, config_parse_dhcp_send_option, 0, offsetof(Network, dhcp_server_send_options)
DHCPServer.BindToInterface, config_parse_bool, 0, offsetof(Network, dhcp_server_bind_to_interface)
+DHCPServerStaticLease.Address, config_parse_dhcp_static_lease_address, 0, 0
+DHCPServerStaticLease.MACAddress, config_parse_dhcp_static_lease_hwaddr, 0, 0
Bridge.Cost, config_parse_uint32, 0, offsetof(Network, cost)
Bridge.UseBPDU, config_parse_tristate, 0, offsetof(Network, use_bpdu)
Bridge.HairPin, config_parse_tristate, 0, offsetof(Network, hairpin)
#include "networkd-address.h"
#include "networkd-bridge-fdb.h"
#include "networkd-dhcp-common.h"
+#include "networkd-dhcp-server-static-lease.h"
#include "networkd-dhcp-server.h"
#include "networkd-manager.h"
#include "networkd-mdb.h"
network_drop_invalid_routing_policy_rules(network);
network_drop_invalid_traffic_control(network);
network_drop_invalid_sr_iov(network);
+ network_drop_invalid_static_leases(network);
network_adjust_dhcp_server(network);
"DHCPv6\0"
"DHCPv6PrefixDelegation\0"
"DHCPServer\0"
+ "DHCPServerStaticLease\0"
"IPv6AcceptRA\0"
"IPv6NDPProxyAddress\0"
"Bridge\0"
hashmap_free_with_destructor(network->prefixes_by_section, prefix_free);
hashmap_free_with_destructor(network->route_prefixes_by_section, route_prefix_free);
hashmap_free_with_destructor(network->rules_by_section, routing_policy_rule_free);
+ hashmap_free_with_destructor(network->dhcp_static_leases_by_section, dhcp_static_lease_free);
ordered_hashmap_free_with_destructor(network->sr_iov_by_section, sr_iov_free);
ordered_hashmap_free_with_destructor(network->tc_by_section, traffic_control_free);
projects / thirdparty / systemd.git / commitdiff
