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-rw-r--r--proto/rip/auth.c25
-rw-r--r--proto/rip/rip.c65
-rw-r--r--proto/rip/rip.h9
3 files changed, 91 insertions, 8 deletions
diff --git a/proto/rip/auth.c b/proto/rip/auth.c
index 2477448..dbfdf8b 100644
--- a/proto/rip/auth.c
+++ b/proto/rip/auth.c
@@ -19,6 +19,7 @@
#include "lib/resource.h"
#include "lib/lists.h"
#include "lib/timer.h"
+#include "lib/md5.h"
#include "rip.h"
@@ -47,10 +48,28 @@ rip_incoming_authentication( struct proto *p, struct rip_block_auth *block, stru
DBG( "md5 password" );
{
struct password_item *head;
+ struct rip_md5_tail *tail;
+
+ tail = (char *) packet + (block->packetlen - sizeof(struct rip_block_auth));
+
head = P_CF->passwords;
while (head) {
- if (head->id == block->keyid)
- /* Perform md5 + compare */;
+ if (head->id == block->keyid) {
+ struct MD5Context ctxt;
+ int i;
+ char md5sum_packet[16];
+ char md5sum_computed[16];
+
+ memcpy(md5sum_packet, tail->md5, i);
+ password_strncpy(tail->md5, head->password, 16);
+
+ MD5Init(&ctxt);
+ MD5Update(&ctxt, packet, block->packetlen );
+ MD5Final(md5sum_computed, &ctxt);
+
+ if (memcmp(md5sum_packet, md5sum_computed, 16))
+ return 1;
+ }
head = head->next;
}
return 1;
@@ -72,7 +91,7 @@ rip_outgoing_authentication( struct proto *p, struct rip_block_auth *block, stru
log( L_ERR "no passwords set and password authentication requested\n" );
return;
}
- strncpy( (char *) (&block->packetlen), P_CF->passwords->password, 16);
+ password_strncpy( (char *) (&block->packetlen), P_CF->passwords->password, 16);
return;
}
}
diff --git a/proto/rip/rip.c b/proto/rip/rip.c
index 446f310..43655c2 100644
--- a/proto/rip/rip.c
+++ b/proto/rip/rip.c
@@ -80,11 +80,11 @@ rip_tx( sock *s )
struct rip_entry *e = (struct rip_entry *) z;
DBG( "." );
packet->block[i].family = htons( 2 ); /* AF_INET */
- packet->block[i].tag = htons( 0 ); /* FIXME: What should I set it to? */
+ packet->block[i].tag = htons( e->tag );
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? My own IP address? */
- packet->block[i].metric = htonl( 1+ (e->metric?:1) ); /* FIXME: is this right? I already ++ metric at input side */
+ packet->block[i].metric = htonl( e->metric );
if (ipa_equal(e->whotoldme, s->daddr)) {
DBG( "(split horizont)" );
/* FIXME: should we do it in all cases? */
@@ -527,8 +527,57 @@ rip_if_notify(struct proto *p, unsigned c, struct iface *iface)
}
}
+static struct ea_list *
+rip_gen_attrs(struct proto *p, struct linpool *pool, int metric, u16 tag)
+{
+ struct ea_list *l = lp_alloc(pool, sizeof(struct ea_list) + 2*sizeof(eattr));
+
+ l->next = NULL;
+ l->flags = EALF_SORTED;
+ l->count = 2;
+ l->attrs[0].id = EA_RIP_TAG;
+ l->attrs[0].flags = 0;
+ l->attrs[0].type = EAF_TYPE_INT | EAF_INLINE;
+ l->attrs[0].u.data = tag;
+ l->attrs[1].id = EA_RIP_TAG;
+ l->attrs[1].flags = 0;
+ l->attrs[1].type = EAF_TYPE_INT | EAF_INLINE;
+ l->attrs[1].u.data = metric;
+ return l;
+}
+
+static int
+rip_import_control(struct proto *p, struct rte **rt, struct ea_list **attrs, struct linpool *pool)
+{
+ if ((*rt)->attrs->proto == p) /* My own must not be touched */
+ return 1;
+
+ if ((*rt)->attrs->source != RTS_RIP) {
+ struct ea_list *new = rip_gen_attrs(p, pool, 1, 0);
+ new->next = *attrs;
+ *attrs = new;
+ }
+ return 0;
+}
+
+static struct ea_list *
+rip_make_tmp_attrs(struct rte *rt, struct linpool *pool)
+{
+ struct proto *p = rt->attrs->proto;
+ return rip_gen_attrs(p, pool, rt->u.rip.metric, rt->u.rip.tag);
+}
+
+static void
+rip_store_tmp_attrs(struct rte *rt, struct ea_list *attrs)
+{
+ struct proto *p = rt->attrs->proto;
+
+ rt->u.rip.tag = ea_find(attrs, EA_RIP_TAG)->u.data;
+ rt->u.rip.metric = ea_find(attrs, EA_RIP_TAG)->u.data;
+}
+
static void
-rip_rt_notify(struct proto *p, struct network *net, struct rte *new, struct rte *old, struct ea_list *tmpa)
+rip_rt_notify(struct proto *p, struct network *net, struct rte *new, struct rte *old, struct ea_list *attrs)
{
CHK_MAGIC;
@@ -546,8 +595,12 @@ rip_rt_notify(struct proto *p, struct network *net, struct rte *new, struct rte
e = fib_get( &P->rtable, &net->n.prefix, net->n.pxlen );
e->nexthop = new->attrs->gw;
- e->tag = new->u.rip.tag;
- e->metric = new->u.rip.metric;
+ e->tag = ea_find(attrs, EA_RIP_TAG)->u.data;
+ e->metric = ea_find(attrs, EA_RIP_TAG)->u.data;
+ if (e->metric > P_CF->infinity)
+ e->metric = P_CF->infinity;
+ if (!e->metric)
+ e->metric = 1;
e->whotoldme = new->attrs->from;
e->updated = e->changed = now;
e->flags = 0;
@@ -563,6 +616,7 @@ rip_rte_better(struct rte *new, struct rte *old)
if (old->u.rip.metric > new->u.rip.metric)
return 1;
+ /* FIXME */
#define old_metric_is_much_older_than_new_metric 0
if ((old->u.rip.metric == new->u.rip.metric) && (old_metric_is_much_older_than_new_metric))
return 1;
@@ -590,6 +644,7 @@ rip_init_instance(struct proto *p)
p->preference = DEF_PREF_RIP;
p->if_notify = rip_if_notify;
p->rt_notify = rip_rt_notify;
+ p->import_control = rip_import_control;
p->rte_better = rip_rte_better;
p->rte_insert = rip_rte_insert;
p->rte_remove = rip_rte_remove;
diff --git a/proto/rip/rip.h b/proto/rip/rip.h
index 53e1f20..874c565 100644
--- a/proto/rip/rip.h
+++ b/proto/rip/rip.h
@@ -5,6 +5,9 @@
#include "nest/route.h"
#include "nest/password.h"
+#define EA_RIP_TAG EA_CODE(EAP_RIP, 0)
+#define EA_RIP_METRIC EA_CODE(EAP_RIP, 1)
+
struct rip_connection {
node n;
@@ -53,6 +56,12 @@ struct rip_block_auth {
u32 zero1;
};
+struct rip_md5_tail {
+ u16 mustbeFFFF;
+ u16 mustbe0001;
+ char md5[16];
+};
+
struct rip_entry {
struct fib_node n;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 10:08:08 +0100