[bgpd] TCP-MD5: password vty configuration and initial Linux support
2008-07-21 Paul Jakma <paul.jakma@sun.com>
* bgp_packet.c: (bgp_open_receive) fix warning in a zlog call
* bgp_vty.c: (bgp_vty_return) add return code
* bgpd.c: (bgp_master_init) setup the socket list.
* bgp_network.c: Remove the dual IPv4/6 socket thing for now, which
was implemented by Michael, until such time as its clear its
required for Linux (see sockopt comments). IPv6 support, including
IPv4 sessions on AF_INET6 sockets, therefore is broken, and the
'-l 0.0.0.0' arguments would need to be given to bgpd to make
things work here.
2008-07-21 Michael H. Warfield <mhw@wittsend.com>
YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Tomohiko Kusuda <kusuda@inetcore.com>
Leigh Brown <leigh@solinno.co.uk>
* bgp_network.c: (bgp_md5_set_one) shim between libzebra tcp-md5
sockopt and bgpd.
(bgp_md5_set_socket) Helper for bgp_connect
(bgp_md5_set) setup TCP-MD5SIG for the given peer.
(bgp_connect) call out to bgp_md5_set_socket for the outgoing
connect socket.
(bgp_socket) save references to the listen sockets, needed if
TCP-MD5SIG is applied later or changed.
* bgp_vty.c: (*neighbor_password_cmd) New 'neighbor ... password'
commands.
* bgpd.c: (peer_{new,delete) manage TCP-MD5 password
(peer_group2peer_config_copy) inherit TCP-MD5 password
(peer_password_{un,}set) orchestrate the whole add/remove of TCP-MD5
passwords: applying checks, stopping peers, and trying to return
errors to UI, etc.
(bgp_config_write_peer) save password.
Fix missing newline in writeout of neighbor ... port.
2008-07-21 Paul Jakma <paul.jakma@sun.com>
* sockunion.c: ifdef out various places that converted
v4mapped sockets to pure v4. Doesn't seem necessary at all,
presumably a workaround for now historical inet_ntop bugs (?)
2008-07-21 Michael H. Warfield <mhw@wittsend.com>
YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
* sockopt.{c,h}: (sockopt_tcp_signature) Add TCP-MD5SIG support.
diff --git a/bgpd/bgpd.c b/bgpd/bgpd.c
index 4dc6621..8eb0d2e 100644
--- a/bgpd/bgpd.c
+++ b/bgpd/bgpd.c
@@ -788,6 +788,7 @@
peer->status = Idle;
peer->ostatus = Idle;
peer->weight = 0;
+ peer->password = NULL;
peer->bgp = bgp;
peer = peer_lock (peer); /* initial reference */
@@ -1202,6 +1203,17 @@
peer->last_reset = PEER_DOWN_NEIGHBOR_DELETE;
bgp_stop (peer);
bgp_fsm_change_status (peer, Deleted);
+
+ /* Password configuration */
+ if (peer->password)
+ {
+ XFREE (MTYPE_PEER_PASSWORD, peer->password);
+ peer->password = NULL;
+
+ if (! CHECK_FLAG (peer->sflags, PEER_STATUS_GROUP))
+ bgp_md5_set (peer);
+ }
+
bgp_timer_set (peer); /* stops all timers for Deleted */
/* Delete from all peer list. */
@@ -1417,6 +1429,17 @@
else
peer->v_routeadv = BGP_DEFAULT_EBGP_ROUTEADV;
+ /* password apply */
+ if (peer->password)
+ XFREE (MTYPE_PEER_PASSWORD, peer->password);
+
+ if (conf->password)
+ peer->password = XSTRDUP (MTYPE_PEER_PASSWORD, conf->password);
+ else
+ peer->password = NULL;
+
+ bgp_md5_set (peer);
+
/* maximum-prefix */
peer->pmax[afi][safi] = conf->pmax[afi][safi];
peer->pmax_threshold[afi][safi] = conf->pmax_threshold[afi][safi];
@@ -3379,6 +3402,111 @@
return 0;
}
+/* Set password for authenticating with the peer. */
+int
+peer_password_set (struct peer *peer, const char *password)
+{
+ struct listnode *nn, *nnode;
+ int len = password ? strlen(password) : 0;
+ int ret = BGP_SUCCESS;
+
+ if ((len < PEER_PASSWORD_MINLEN) || (len > PEER_PASSWORD_MAXLEN))
+ return BGP_ERR_INVALID_VALUE;
+
+ if (peer->password && strcmp (peer->password, password) == 0
+ && ! CHECK_FLAG (peer->sflags, PEER_STATUS_GROUP))
+ return 0;
+
+ if (peer->password)
+ XFREE (MTYPE_PEER_PASSWORD, peer->password);
+
+ peer->password = XSTRDUP (MTYPE_PEER_PASSWORD, password);
+
+ if (! CHECK_FLAG (peer->sflags, PEER_STATUS_GROUP))
+ {
+ if (peer->status == Established)
+ bgp_notify_send (peer, BGP_NOTIFY_CEASE, BGP_NOTIFY_CEASE_CONFIG_CHANGE);
+ else
+ BGP_EVENT_ADD (peer, BGP_Stop);
+
+ return (bgp_md5_set (peer) >= 0) ? BGP_SUCCESS : BGP_ERR_TCPSIG_FAILED;
+ }
+
+ for (ALL_LIST_ELEMENTS (peer->group->peer, nn, nnode, peer))
+ {
+ if (peer->password && strcmp (peer->password, password) == 0)
+ continue;
+
+ if (peer->password)
+ XFREE (MTYPE_PEER_PASSWORD, peer->password);
+
+ peer->password = XSTRDUP(MTYPE_PEER_PASSWORD, password);
+
+ if (peer->status == Established)
+ bgp_notify_send (peer, BGP_NOTIFY_CEASE, BGP_NOTIFY_CEASE_CONFIG_CHANGE);
+ else
+ BGP_EVENT_ADD (peer, BGP_Stop);
+
+ if (bgp_md5_set (peer) < 0)
+ ret = BGP_ERR_TCPSIG_FAILED;
+ }
+
+ return ret;
+}
+
+int
+peer_password_unset (struct peer *peer)
+{
+ struct listnode *nn, *nnode;
+
+ if (!peer->password
+ && !CHECK_FLAG (peer->sflags, PEER_STATUS_GROUP))
+ return 0;
+
+ if (!CHECK_FLAG (peer->sflags, PEER_STATUS_GROUP))
+ {
+ if (peer_group_active (peer)
+ && peer->group->conf->password
+ && strcmp (peer->group->conf->password, peer->password) == 0)
+ return BGP_ERR_PEER_GROUP_HAS_THE_FLAG;
+
+ if (peer->status == Established)
+ bgp_notify_send (peer, BGP_NOTIFY_CEASE, BGP_NOTIFY_CEASE_CONFIG_CHANGE);
+ else
+ BGP_EVENT_ADD (peer, BGP_Stop);
+
+ if (peer->password)
+ XFREE (MTYPE_PEER_PASSWORD, peer->password);
+
+ peer->password = NULL;
+
+ bgp_md5_set (peer);
+
+ return 0;
+ }
+
+ XFREE (MTYPE_PEER_PASSWORD, peer->password);
+ peer->password = NULL;
+
+ for (ALL_LIST_ELEMENTS (peer->group->peer, nn, nnode, peer))
+ {
+ if (!peer->password)
+ continue;
+
+ if (peer->status == Established)
+ bgp_notify_send (peer, BGP_NOTIFY_CEASE, BGP_NOTIFY_CEASE_CONFIG_CHANGE);
+ else
+ BGP_EVENT_ADD (peer, BGP_Stop);
+
+ XFREE (MTYPE_PEER_PASSWORD, peer->password);
+ peer->password = NULL;
+
+ bgp_md5_set (peer);
+ }
+
+ return 0;
+}
+
/* Set distribute list to the peer. */
int
peer_distribute_set (struct peer *peer, afi_t afi, safi_t safi, int direct,
@@ -4416,9 +4544,17 @@
! CHECK_FLAG (g_peer->flags, PEER_FLAG_SHUTDOWN))
vty_out (vty, " neighbor %s shutdown%s", addr, VTY_NEWLINE);
+ /* Password. */
+ if (peer->password)
+ if (!peer_group_active (peer)
+ || ! g_peer->password
+ || strcmp (peer->password, g_peer->password) != 0)
+ vty_out (vty, " neighbor %s password %s%s", addr, peer->password,
+ VTY_NEWLINE);
+
/* BGP port. */
if (peer->port != BGP_PORT_DEFAULT)
- vty_out (vty, " neighbor %s port %d%s", addr, peer->port,
+ vty_out (vty, " neighbor %s port %d%s", addr, peer->port,
VTY_NEWLINE);
/* Local interface name. */
@@ -4948,6 +5084,7 @@
bm = &bgp_master;
bm->bgp = list_new ();
+ bm->listen_sockets = list_new ();
bm->port = BGP_PORT_DEFAULT;
bm->master = thread_master_create ();
bm->start_time = time (NULL);