Initial revision
diff --git a/isisd/isis_dynhn.c b/isisd/isis_dynhn.c
new file mode 100644
index 0000000..9e151d0
--- /dev/null
+++ b/isisd/isis_dynhn.c
@@ -0,0 +1,124 @@
+/*
+ * IS-IS Rout(e)ing protocol - isis_dynhn.c
+ * Dynamic hostname cache
+ * Copyright (C) 2001,2002 Sampo Saaristo
+ * Tampere University of Technology
+ * Institute of Communications Engineering
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public Licenseas published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <time.h>
+#include <zebra.h>
+#include <net/ethernet.h>
+
+#include "vty.h"
+#include "linklist.h"
+#include "memory.h"
+#include "log.h"
+#include "stream.h"
+#include "command.h"
+#include "if.h"
+
+#include "isisd/dict.h"
+#include "isisd/isis_constants.h"
+#include "isisd/isis_common.h"
+#include "isisd/isis_flags.h"
+#include "isisd/isis_circuit.h"
+#include "isisd/isisd.h"
+#include "isisd/isis_dynhn.h"
+#include "isisd/isis_misc.h"
+#include "isisd/isis_constants.h"
+
+extern struct isis *isis;
+extern struct host host;
+
+struct list *dyn_cache = NULL;
+
+void
+dyn_cache_init (void)
+{
+ dyn_cache = list_new ();
+
+ return;
+}
+
+struct isis_dynhn *dynhn_find_by_id (u_char * id)
+{
+ struct listnode *node = NULL;
+ struct isis_dynhn *dyn = NULL;
+
+ for (node = listhead (dyn_cache); node; nextnode (node)) {
+ dyn = getdata (node);
+ if (memcmp (dyn->id, id, ISIS_SYS_ID_LEN) == 0)
+ return dyn;
+ }
+
+ return NULL;
+}
+
+void
+isis_dynhn_insert (u_char *id, struct hostname *hostname, int level)
+{
+ struct isis_dynhn *dyn;
+
+ dyn = dynhn_find_by_id (id);
+ if (dyn) {
+ memcpy (&dyn->name, hostname, hostname->namelen + 1);
+ memcpy (dyn->id, id, ISIS_SYS_ID_LEN);
+ dyn->refresh = time (NULL);
+ return;
+ }
+ dyn = XMALLOC (MTYPE_ISIS_DYNHN, sizeof (struct isis_dynhn));
+ if (!dyn) {
+ zlog_warn ("isis_dynhn_insert(): out of memory!");
+ return;
+ }
+ memset (dyn,0,sizeof(struct isis_dynhn));
+ /* we also copy the length */
+ memcpy (&dyn->name, hostname, hostname->namelen + 1);
+ memcpy (dyn->id, id, ISIS_SYS_ID_LEN);
+ dyn->refresh = time (NULL);
+ dyn->level = level;
+
+ listnode_add (dyn_cache, dyn);
+
+ return;
+}
+
+/*
+ * Level System ID Dynamic Hostname (notag)
+ * 2 0000.0000.0001 foo-gw
+ * 2 0000.0000.0002 bar-gw
+ * * 0000.0000.0004 this-gw
+ */
+void dynhn_print_all (struct vty *vty)
+{
+ struct listnode *node;
+ struct isis_dynhn *dyn;
+
+ vty_out (vty, "Level System ID Dynamic Hostname%s", VTY_NEWLINE);
+ for (node = listhead (dyn_cache); node; nextnode (node)) {
+ dyn = getdata (node);
+ vty_out (vty, "%-7d", dyn->level);
+ vty_out (vty, "%-15s%-15s%s", sysid_print (dyn->id), dyn->name.name,
+ VTY_NEWLINE);
+ }
+
+ vty_out (vty, " * %s %s%s", sysid_print (isis->sysid), host.name,
+ VTY_NEWLINE);
+ return;
+}
+