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sd-dhcp-server: add RELEASE support

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This commit is contained in:
Tom Gundersen 2014-05-26 15:18:47 +02:00
parent 5b34277c20
commit 500792d818
1 changed files with 26 additions and 1 deletions
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27
src/libsystemd-network/sd-dhcp-server.c
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@ -544,7 +544,7 @@ static int get_pool_offset(sd_dhcp_server *server, be32_t requested_ip) {
if (be32toh(requested_ip) < be32toh(server->pool_start) ||
be32toh(requested_ip) >= be32toh(server->pool_start) +
+ server->pool_size)
+ server->pool_size)
return -EINVAL;
return be32toh(requested_ip) - be32toh(server->pool_start);
@ -743,6 +743,31 @@ int dhcp_server_handle_message(sd_dhcp_server *server, DHCPMessage *message,
break;
}
case DHCP_RELEASE: {
int pool_offset;
log_dhcp_server(server, "RELEASE (0x%x)",
be32toh(req->message->xid));
if (!existing_lease)
return 0;
if (existing_lease->address != req->message->ciaddr)
return 0;
pool_offset = get_pool_offset(server, req->message->ciaddr);
if (pool_offset < 0)
return 0;
if (server->bound_leases[pool_offset] == existing_lease) {
server->bound_leases[pool_offset] = NULL;
hashmap_remove(server->leases_by_client_id, existing_lease);
dhcp_lease_free(existing_lease);
return 1;
} else
return 0;
}
}
return 0;