Initial revision
diff --git a/ripd/rip_peer.c b/ripd/rip_peer.c
new file mode 100644
index 0000000..20c2da7
--- /dev/null
+++ b/ripd/rip_peer.c
@@ -0,0 +1,211 @@
+/* RIP peer support
+ * Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * GNU Zebra is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Zebra; see the file COPYING. If not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#include <zebra.h>
+
+#include "if.h"
+#include "prefix.h"
+#include "command.h"
+#include "linklist.h"
+#include "thread.h"
+#include "memory.h"
+
+#include "ripd/ripd.h"
+
+/* Linked list of RIP peer. */
+struct list *peer_list;
+
+struct rip_peer *
+rip_peer_new ()
+{
+ struct rip_peer *new;
+
+ new = XMALLOC (MTYPE_RIP_PEER, sizeof (struct rip_peer));
+ memset (new, 0, sizeof (struct rip_peer));
+ return new;
+}
+
+void
+rip_peer_free (struct rip_peer *peer)
+{
+ XFREE (MTYPE_RIP_PEER, peer);
+}
+
+struct rip_peer *
+rip_peer_lookup (struct in_addr *addr)
+{
+ struct rip_peer *peer;
+ struct listnode *nn;
+
+ LIST_LOOP (peer_list, peer, nn)
+ {
+ if (IPV4_ADDR_SAME (&peer->addr, addr))
+ return peer;
+ }
+ return NULL;
+}
+
+struct rip_peer *
+rip_peer_lookup_next (struct in_addr *addr)
+{
+ struct rip_peer *peer;
+ struct listnode *nn;
+
+ LIST_LOOP (peer_list, peer, nn)
+ {
+ if (htonl (peer->addr.s_addr) > htonl (addr->s_addr))
+ return peer;
+ }
+ return NULL;
+}
+
+/* RIP peer is timeout. */
+int
+rip_peer_timeout (struct thread *t)
+{
+ struct rip_peer *peer;
+
+ peer = THREAD_ARG (t);
+ listnode_delete (peer_list, peer);
+ rip_peer_free (peer);
+
+ return 0;
+}
+
+/* Get RIP peer. At the same time update timeout thread. */
+struct rip_peer *
+rip_peer_get (struct in_addr *addr)
+{
+ struct rip_peer *peer;
+
+ peer = rip_peer_lookup (addr);
+
+ if (peer)
+ {
+ if (peer->t_timeout)
+ thread_cancel (peer->t_timeout);
+ }
+ else
+ {
+ peer = rip_peer_new ();
+ peer->addr = *addr;
+ listnode_add_sort (peer_list, peer);
+ }
+
+ /* Update timeout thread. */
+ peer->t_timeout = thread_add_timer (master, rip_peer_timeout, peer,
+ RIP_PEER_TIMER_DEFAULT);
+
+ /* Last update time set. */
+ time (&peer->uptime);
+
+ return peer;
+}
+
+void
+rip_peer_update (struct sockaddr_in *from, u_char version)
+{
+ struct rip_peer *peer;
+ peer = rip_peer_get (&from->sin_addr);
+ peer->version = version;
+}
+
+void
+rip_peer_bad_route (struct sockaddr_in *from)
+{
+ struct rip_peer *peer;
+ peer = rip_peer_get (&from->sin_addr);
+ peer->recv_badroutes++;
+}
+
+void
+rip_peer_bad_packet (struct sockaddr_in *from)
+{
+ struct rip_peer *peer;
+ peer = rip_peer_get (&from->sin_addr);
+ peer->recv_badpackets++;
+}
+
+/* Display peer uptime. */
+char *
+rip_peer_uptime (struct rip_peer *peer, char *buf, size_t len)
+{
+ time_t uptime;
+ struct tm *tm;
+
+ /* If there is no connection has been done before print `never'. */
+ if (peer->uptime == 0)
+ {
+ snprintf (buf, len, "never ");
+ return buf;
+ }
+
+ /* Get current time. */
+ uptime = time (NULL);
+ uptime -= peer->uptime;
+ tm = gmtime (&uptime);
+
+ /* Making formatted timer strings. */
+#define ONE_DAY_SECOND 60*60*24
+#define ONE_WEEK_SECOND 60*60*24*7
+
+ if (uptime < ONE_DAY_SECOND)
+ snprintf (buf, len, "%02d:%02d:%02d",
+ tm->tm_hour, tm->tm_min, tm->tm_sec);
+ else if (uptime < ONE_WEEK_SECOND)
+ snprintf (buf, len, "%dd%02dh%02dm",
+ tm->tm_yday, tm->tm_hour, tm->tm_min);
+ else
+ snprintf (buf, len, "%02dw%dd%02dh",
+ tm->tm_yday/7, tm->tm_yday - ((tm->tm_yday/7) * 7), tm->tm_hour);
+ return buf;
+}
+
+void
+rip_peer_display (struct vty *vty)
+{
+ struct rip_peer *peer;
+ struct listnode *nn;
+#define RIP_UPTIME_LEN 25
+ char timebuf[RIP_UPTIME_LEN];
+
+ LIST_LOOP (peer_list, peer, nn)
+ {
+ vty_out (vty, " %-16s %9d %9d %9d %s%s", inet_ntoa (peer->addr),
+ peer->recv_badpackets, peer->recv_badroutes,
+ ZEBRA_RIP_DISTANCE_DEFAULT,
+ rip_peer_uptime (peer, timebuf, RIP_UPTIME_LEN),
+ VTY_NEWLINE);
+ }
+}
+
+int
+rip_peer_list_cmp (struct rip_peer *p1, struct rip_peer *p2)
+{
+ return htonl (p1->addr.s_addr) > htonl (p2->addr.s_addr);
+}
+
+void
+rip_peer_init ()
+{
+ peer_list = list_new ();
+ peer_list->cmp = (int (*)(void *, void *)) rip_peer_list_cmp;
+}