From c1824c4d4c7753246ba26d27c7a3b7be3006d46b Mon Sep 17 00:00:00 2001
From: Ondrej Filip <feela@network.cz>
Date: Tue, 6 Jun 2000 01:23:03 +0000
Subject: Simple autentication added.

---
 doc/bird.conf.example |  3 +++
 proto/ospf/config.Y   |  6 +++++-
 proto/ospf/iface.c    |  4 ++--
 proto/ospf/ospf.h     |  5 +++++
 proto/ospf/packet.c   | 28 ++++++++++++++++++++++++++--
 5 files changed, 41 insertions(+), 5 deletions(-)

diff --git a/doc/bird.conf.example b/doc/bird.conf.example
index ca7546e9..4de53cf5 100644
--- a/doc/bird.conf.example
+++ b/doc/bird.conf.example
@@ -117,6 +117,8 @@ protocol static {
 #			dead count 5;
 #			wait 50;
 #			type broadcast;
+#			authentication simple;
+#			password "pass";
 #		};
 #		interface "arc0" {
 #			type nonbroadcast;
@@ -130,6 +132,7 @@ protocol static {
 #		stub 1;
 #		interface "ppp1" {
 #			hello 8;
+#			authentication none;
 #		};
 #	};
 #}
diff --git a/proto/ospf/config.Y b/proto/ospf/config.Y
index e678a262..f22361cb 100644
--- a/proto/ospf/config.Y
+++ b/proto/ospf/config.Y
@@ -23,7 +23,7 @@ CF_DECLS
 CF_KEYWORDS(OSPF, AREA, OSPF_METRIC1, OSPF_METRIC2, OSPF_TAG)
 CF_KEYWORDS(NEIGHBORS, RFC1583COMPAT, STUB, TICK, COST, RETRANSMIT)
 CF_KEYWORDS(HELLO, TRANSIT, PRIORITY, DEAD, NONBROADCAST, POINTOPOINT, TYPE)
-CF_KEYWORDS(NEIGHBORS)
+CF_KEYWORDS(NEIGHBORS, NONE, SIMPLE, AUTHENTICATION, PASSWORD)
 
 %type <t> opttext
 
@@ -86,6 +86,9 @@ ospf_iface_item:
  | TYPE NONBROADCAST { OSPF_PATT->type = OSPF_IT_NBMA ; }
  | TYPE POINTOPOINT { OSPF_PATT->type = OSPF_IT_PTP ; }
  | NEIGHBORS '{' ipa_list '}'
+ | AUTHENTICATION NONE { OSPF_PATT->autype=AU_NONE ; }
+ | AUTHENTICATION SIMPLE { OSPF_PATT->autype=AU_SIMPLE ; }
+ | PASSWORD TEXT { memcpy(OSPF_PATT->password, $2, 8); }
  |
  ;
 
@@ -116,6 +119,7 @@ ospf_iface_start:
   OSPF_PATT->deadc = DEADC_D;
   OSPF_PATT->type = OSPF_IT_UNDEF;
   init_list(&OSPF_PATT->nbma_list);
+  OSPF_PATT->autype=AU_NONE;
  }
 ;
 
diff --git a/proto/ospf/iface.c b/proto/ospf/iface.c
index ff29a1fd..7658f436 100644
--- a/proto/ospf/iface.c
+++ b/proto/ospf/iface.c
@@ -398,8 +398,8 @@ ospf_ifa_add(struct object_lock *lock)
   ifa->helloint=ip->helloint;
   ifa->waitint=ip->waitint;
   ifa->deadc=ip->deadc;
-  ifa->autype=0;	/* FIXME add authentification */
-  for(i=0;i<8;i++) ifa->aukey[i]=0;
+  ifa->autype=ip->autype;
+  memcpy(ifa->aukey,ip->password,8);
   ifa->options=2;	/* FIXME what options? */
 
   if(ip->type==OSPF_IT_UNDEF)
diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h
index 65bb6058..3d5d1df8 100644
--- a/proto/ospf/ospf.h
+++ b/proto/ospf/ospf.h
@@ -377,6 +377,11 @@ struct ospf_iface_patt {
   int waitint;
   int deadc;
   int type;
+  int autype;
+#define AU_NONE 0
+#define AU_SIMPLE 1
+#define AU_CRYPT 2
+  u8 password[8];
   list nbma_list;
 };
 
diff --git a/proto/ospf/packet.c b/proto/ospf/packet.c
index 88234da1..4b2e7727 100644
--- a/proto/ospf/packet.c
+++ b/proto/ospf/packet.c
@@ -31,10 +31,29 @@ fill_ospf_pkt_hdr(struct ospf_iface *ifa, void *buf, u8 h_type)
 void
 ospf_tx_authenticate(struct ospf_iface *ifa, struct ospf_packet *pkt)
 {
-  /* FIXME */
+  int i;
+  pkt->autype=ifa->autype;
+  memcpy(pkt->authetication, ifa->aukey, 8);
   return;
 }
 
+int
+ospf_rx_authenticate(struct ospf_iface *ifa, struct ospf_packet *pkt)
+{
+  int i;
+  if(pkt->autype!=ifa->autype) return 0;
+  if(ifa->autype==AU_NONE) return 1;
+  if(ifa->autype==AU_SIMPLE)
+  {
+    for(i=0;i<8;i++)
+    {
+      if(pkt->authetication[i]!=ifa->aukey[i]) return 0;
+    }
+    return 1;
+  }
+  return 0;
+}
+
 void
 ospf_pkt_finalize(struct ospf_iface *ifa, struct ospf_packet *pkt)
 {
@@ -95,7 +114,12 @@ ospf_rx_hook(sock *sk, int size)
     return(1);
   }
 
-  /* FIXME: Do authetification */
+  if(!ospf_rx_authenticate(ifa,ps))
+  {
+    log("%s: Bad OSPF packet received: bad password", p->name);
+    return(1);
+  }
+
 
   if(ps->areaid!=ifa->an)
   {
-- 
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