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Code Issues Releases Wiki Activity

Intermediate changes to support actual DHCP protocol engine

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This commit is contained in:
Ted Lemon
1996-02-21 12:11:09 +00:00
parent d9c6d82c49
commit 97ca16995f
29 changed files with 972 additions and 120 deletions
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52
server/dhcpd.c
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@@ -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)