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r5212: added checking for receiving our own packets as broadcasts

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(This used to be commit 290dbd8cdc)
This commit is contained in:
Andrew Tridgell 2005-02-04 02:05:27 +00:00 committed by Gerald (Jerry) Carter
parent 9eb33fc212
commit 1b27d0ce12
2 changed files with 35 additions and 0 deletions
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6
source4/nbt_server/interfaces.c
View File

@ -40,6 +40,12 @@ static void nbtd_request_handler(struct nbt_name_socket *nbtsock,
return;
}
/* see if its from one of our own interfaces - if so, then ignore it */
if (nbtd_self_packet(nbtsock, packet, src_address, src_port)) {
DEBUG(10,("Ignoring self packet from %s:%d\n", src_address, src_port));
return;
}
/* the request is to us in our role as a B node */
switch (packet->operation & NBT_OPCODE) {
case NBT_OPCODE_QUERY:

29
source4/nbt_server/packet.c
View File

@ -36,3 +36,32 @@ void nbtd_bad_packet(struct nbt_name_packet *packet,
}
}
/*
see if an incoming packet is from one of our own interfaces
*/
BOOL nbtd_self_packet(struct nbt_name_socket *nbtsock,
struct nbt_name_packet *packet,
const char *src_address, int src_port)
{
struct nbt_interface *iface = talloc_get_type(nbtsock->incoming.private,
struct nbt_interface);
struct nbt_server *nbtsrv = iface->nbtsrv;
if (src_port != lp_nbt_port()) {
return False;
}
for (iface=nbtsrv->interfaces;iface;iface=iface->next) {
if (strcmp(src_address, iface->ip_address) == 0) {
return True;
}
}
if (nbtsrv->bcast_interface &&
strcmp(src_address, nbtsrv->bcast_interface->ip_address) == 0) {
return True;
}
return False;
}