diff options
| -rw-r--r-- | proto/rip/rip.c | 33 |
1 files changed, 21 insertions, 12 deletions
diff --git a/proto/rip/rip.c b/proto/rip/rip.c index 593f32b..fdbdacd 100644 --- a/proto/rip/rip.c +++ b/proto/rip/rip.c @@ -35,7 +35,7 @@ rip_reply(struct proto *p) #endif } -#define P_NAME "rip/unknown" /* FIXME */ +#define P_NAME p->name /* * Output processing @@ -88,8 +88,8 @@ rip_tx( sock *s ) packet->block[i].tag = htons( 0 ); /* FIXME: What should I set it to? */ packet->block[i].network = e->n.prefix; packet->block[i].netmask = ipa_mkmask( e->n.pxlen ); - packet->block[i].nexthop = IPA_NONE; /* FIXME: How should I set it? */ - packet->block[i].metric = htonl( 1+ (e->metric?:1) ); + packet->block[i].nexthop = IPA_NONE; /* FIXME: How should I set it? My own IP address? */ + packet->block[i].metric = htonl( 1+ (e->metric?:1) ); /* FIXME: is this right? I already ++ metric at input side */ if (ipa_equal(e->whotoldme, s->daddr)) { DBG( "(split horizont)" ); /* FIXME: should we do it in all cases? */ @@ -160,7 +160,7 @@ rip_sendto( struct proto *p, ip_addr daddr, int dport, struct rip_interface *rif rip_tx(c->rif->sock); } -struct rip_interface* +static struct rip_interface* find_interface(struct proto *p, struct iface *what) { struct rip_interface *i; @@ -190,7 +190,7 @@ advertise_entry( struct proto *p, struct rip_block *b, ip_addr whotoldme ) rte *r; net *n; neighbor *neighbor; - struct rip_interface *i; + struct rip_interface *rif; bzero(&A, sizeof(A)); A.proto = p; @@ -202,7 +202,9 @@ advertise_entry( struct proto *p, struct rip_block *b, ip_addr whotoldme ) A.flags = 0; A.gw = ipa_nonzero(b->nexthop) ? b->nexthop : whotoldme; A.from = whotoldme; - + + /* FIXME: Check if destination looks valid - ie not net 0 or 127 */ + neighbor = neigh_find( p, &A.gw, 0 ); if (!neighbor) { log( L_ERR "%I asked me to route %I/%I using not-neighbor %I.", A.from, b->network, b->netmask, A.gw ); @@ -210,14 +212,23 @@ advertise_entry( struct proto *p, struct rip_block *b, ip_addr whotoldme ) } A.iface = neighbor->iface; - if (!(i = neighbor->data)) { - i = neighbor->data = find_interface(p, A.iface); + if (!(rif = neighbor->data)) { + rif = neighbor->data = find_interface(p, A.iface); } + if (!rif) { + bug("Route packet using unknown interface? No."); + return; + } + /* set to: interface of nexthop */ a = rta_lookup(&A); - n = net_get( &master_table, 0, b->network, ipa_mklen( b->netmask )); /* FIXME: should verify that it really is netmask */ + if (!ipa_equal( ipa_mkmask(ipa_mklen(b->netmask)), b->netmask)) { + log( L_ERR "%I asked me to route %I/%I, but that is not valid netmask.", A.from, b->network, b->netmask ); + return; + } + n = net_get( &master_table, 0, b->network, ipa_mklen( b->netmask )); r = rte_get_temp(a); - r->u.rip.metric = ntohl(b->metric) + i->metric; + r->u.rip.metric = ntohl(b->metric) + rif->metric; if (r->u.rip.metric > P_CF->infinity) r->u.rip.metric = P_CF->infinity; r->u.rip.tag = ntohl(b->tag); r->net = n; @@ -239,8 +250,6 @@ process_block( struct proto *p, struct rip_block *block, ip_addr whotoldme ) return; } - /* FIXME: Check if destination looks valid - ie not net 0 or 127 */ - debug( "block: %I tells me: %I/%I available, metric %d... ", whotoldme, network, block->netmask, metric ); advertise_entry( p, block, whotoldme ); |