You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

102 lines
3.1 KiB

diff -up dhcp-4.2.4b1/server/bootp.c.unicast dhcp-4.2.4b1/server/bootp.c
--- dhcp-4.2.4b1/server/bootp.c.unicast 2012-04-10 23:27:06.000000000 +0200
+++ dhcp-4.2.4b1/server/bootp.c 2012-04-16 17:28:42.095919022 +0200
@@ -59,6 +59,7 @@ void bootp (packet)
char msgbuf [1024];
int ignorep;
int peer_has_leases = 0;
+ int norelay = 0;
if (packet -> raw -> op != BOOTREQUEST)
return;
@@ -74,7 +75,7 @@ void bootp (packet)
? inet_ntoa (packet -> raw -> giaddr)
: packet -> interface -> name);
- if (!locate_network (packet)) {
+ if ((norelay = locate_network (packet)) == 0) {
log_info ("%s: network unknown", msgbuf);
return;
}
@@ -399,6 +400,15 @@ void bootp (packet)
goto out;
}
+ } else if (norelay == 2) {
+ to.sin_addr = raw.ciaddr;
+ to.sin_port = remote_port;
+ if (fallback_interface) {
+ result = send_packet (fallback_interface, NULL, &raw,
+ outgoing.packet_length, from,
+ &to, &hto);
+ goto out;
+ }
/* If it comes from a client that already knows its address
and is not requesting a broadcast response, and we can
diff -up dhcp-4.2.4b1/server/dhcp.c.unicast dhcp-4.2.4b1/server/dhcp.c
--- dhcp-4.2.4b1/server/dhcp.c.unicast 2012-03-09 12:28:12.000000000 +0100
+++ dhcp-4.2.4b1/server/dhcp.c 2012-04-16 17:26:55.067418285 +0200
@@ -4299,6 +4299,7 @@ int locate_network (packet)
struct data_string data;
struct subnet *subnet = (struct subnet *)0;
struct option_cache *oc;
+ int norelay = 0;
/* See if there's a Relay Agent Link Selection Option, or a
* Subnet Selection Option. The Link-Select and Subnet-Select
@@ -4314,12 +4315,24 @@ int locate_network (packet)
from the interface, if there is one. If not, fail. */
if (!oc && !packet -> raw -> giaddr.s_addr) {
if (packet -> interface -> shared_network) {
- shared_network_reference
- (&packet -> shared_network,
- packet -> interface -> shared_network, MDL);
- return 1;
+ struct in_addr any_addr;
+ any_addr.s_addr = INADDR_ANY;
+
+ if (!packet -> packet_type && memcmp(&packet -> raw -> ciaddr, &any_addr, 4)) {
+ struct iaddr cip;
+ memcpy(cip.iabuf, &packet -> raw -> ciaddr, 4);
+ cip.len = 4;
+ if (!find_grouped_subnet(&subnet, packet->interface->shared_network, cip, MDL))
+ norelay = 2;
+ }
+
+ if (!norelay) {
+ shared_network_reference(&packet -> shared_network, packet -> interface -> shared_network, MDL);
+ return 1;
+ }
+ } else {
+ return 0;
}
- return 0;
}
/* If there's an option indicating link connection, and it's valid,
@@ -4342,7 +4355,10 @@ int locate_network (packet)
data_string_forget (&data, MDL);
} else {
ia.len = 4;
- memcpy (ia.iabuf, &packet -> raw -> giaddr, 4);
+ if (norelay)
+ memcpy (ia.iabuf, &packet->raw->ciaddr, 4);
+ else
+ memcpy (ia.iabuf, &packet->raw->giaddr, 4);
}
/* If we know the subnet on which the IP address lives, use it. */
@@ -4350,7 +4366,10 @@ int locate_network (packet)
shared_network_reference (&packet -> shared_network,
subnet -> shared_network, MDL);
subnet_dereference (&subnet, MDL);
- return 1;
+ if (norelay)
+ return norelay;
+ else
+ return 1;
}
/* Otherwise, fail. */