diff options
Diffstat (limited to 'dhcpd.c')
| -rw-r--r-- | dhcpd.c | 52 |
1 files changed, 46 insertions, 6 deletions
@@ -50,7 +50,10 @@ static char copyright[] = static void usage PROTO ((void)); TIME cur_time; +TIME default_lease_time = 43200; /* 12 hours... */ +TIME max_lease_time = 86400; /* 24 hours... */ +struct subnet *local_subnet; u_int32_t *server_addrlist; int server_addrcount; u_int16_t server_port; @@ -63,6 +66,7 @@ int main (argc, argv, envp) int port = 0; int i; struct sockaddr_in name; + struct iaddr taddr; u_int32_t *addrlist = (u_int32_t *)0; int addrcount = 0; struct tree *addrtree = (struct tree *)0; @@ -148,7 +152,23 @@ int main (argc, argv, envp) } #endif + taddr.len = 0; server_addrlist = get_interface_list (&server_addrcount); + for (i = 0; i < server_addrcount; i++) { + struct sockaddr_in foo; + foo.sin_addr.s_addr = server_addrlist [i]; + printf ("Address %d: %s\n", i, inet_ntoa (foo.sin_addr)); + + if (server_addrlist [i] != htonl (INADDR_LOOPBACK)) { + if (taddr.len) { + error ("dhcpd currently does not support " + "multiple interfaces"); + } + taddr.len = 4; + memcpy (taddr.iabuf, &server_addrlist [i], 4); + local_subnet = find_subnet (taddr); + } + } /* Listen on the specified (or default) port on each specified (or default) IP address. */ @@ -164,6 +184,8 @@ int main (argc, argv, envp) close (i); } + dump_subnets (); + /* Receive packets and dispatch them... */ dispatch (); @@ -191,6 +213,7 @@ void do_packet (packbuf, len, from_port, from, sock) { struct packet *tp; struct dhcp_packet *tdp; + struct iaddr ia; if (!(tp = new_packet ("do_packet"))) return; @@ -205,12 +228,29 @@ void do_packet (packbuf, len, from_port, from, sock) tp -> client_port = from_port; tp -> client_addr = from; tp -> client_sock = sock; - parse_options (tp); - if (tp -> options_valid && - tp -> options [DHO_DHCP_MESSAGE_TYPE].data) - dhcp (tp); - else - bootp (tp); + + /* If this came through a gateway, find the corresponding subnet... */ + if (tp -> raw -> giaddr.s_addr) { + ia.len = 4; + memcpy (ia.iabuf, &tp -> raw -> giaddr, 4); + tp -> subnet = find_subnet (ia); + } else { + tp -> subnet = local_subnet; + } + + /* If the subnet from whence this packet came is unknown to us, + drop it on the floor... */ + if (!tp -> subnet) + note ("Packet from unknown subnet: %s", + inet_ntoa (tp -> raw -> giaddr)); + else { + parse_options (tp); + if (tp -> options_valid && + tp -> options [DHO_DHCP_MESSAGE_TYPE].data) + dhcp (tp); + else + bootp (tp); + } } void dump_packet (tp) |