* IS-IS Rout(e)ing protocol - isis_dynhn.c
* Dynamic hostname cache
* Copyright (C) 2001,2002 Sampo Saaristo
- * Tampere University of Technology
+ * 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)
+ * 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
+ * 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.
+ * You should have received a copy of the GNU General Public License along
+ * with this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include <time.h>
#include <zebra.h>
#include "vty.h"
#include "stream.h"
#include "command.h"
#include "if.h"
+#include "thread.h"
#include "isisd/dict.h"
#include "isisd/isis_constants.h"
#include "isisd/isis_misc.h"
#include "isisd/isis_constants.h"
-extern struct isis *isis;
extern struct host host;
struct list *dyn_cache = NULL;
+static int dyn_cache_cleanup(struct thread *);
-void
-dyn_cache_init (void)
+void dyn_cache_init(void)
{
- dyn_cache = list_new ();
+ if (dyn_cache == NULL)
+ dyn_cache = list_new();
+ thread_add_timer(master, dyn_cache_cleanup, NULL, 120,
+ &isis->t_dync_clean);
+ return;
+}
+
+static int dyn_cache_cleanup(struct thread *thread)
+{
+ struct listnode *node, *nnode;
+ struct isis_dynhn *dyn;
+ time_t now = time(NULL);
+
+ isis->t_dync_clean = NULL;
- return;
+ for (ALL_LIST_ELEMENTS(dyn_cache, node, nnode, dyn)) {
+ if ((now - dyn->refresh) < MAX_LSP_LIFETIME)
+ continue;
+
+ list_delete_node(dyn_cache, node);
+ XFREE(MTYPE_ISIS_DYNHN, dyn);
+ }
+
+ thread_add_timer(master, dyn_cache_cleanup, NULL, 120,
+ &isis->t_dync_clean);
+ return ISIS_OK;
}
-struct isis_dynhn *
-dynhn_find_by_id (u_char * id)
+struct isis_dynhn *dynhn_find_by_id(const uint8_t *id)
{
- struct listnode *node = NULL;
- struct isis_dynhn *dyn = NULL;
+ 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;
- }
+ for (ALL_LIST_ELEMENTS_RO(dyn_cache, node, dyn))
+ if (memcmp(dyn->id, id, ISIS_SYS_ID_LEN) == 0)
+ return dyn;
- return NULL;
+ return NULL;
}
-void
-isis_dynhn_insert (u_char * id, struct hostname *hostname, int level)
+struct isis_dynhn *dynhn_find_by_name(const char *hostname)
{
- 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;
+ struct listnode *node = NULL;
+ struct isis_dynhn *dyn = NULL;
+
+ for (ALL_LIST_ELEMENTS_RO(dyn_cache, node, dyn))
+ if (strncmp(dyn->hostname, hostname, 255) == 0)
+ return dyn;
+
+ return NULL;
+}
+
+void isis_dynhn_insert(const uint8_t *id, const char *hostname, int level)
+{
+ struct isis_dynhn *dyn;
+
+ dyn = dynhn_find_by_id(id);
+ if (!dyn) {
+ dyn = XCALLOC(MTYPE_ISIS_DYNHN, sizeof(struct isis_dynhn));
+ memcpy(dyn->id, id, ISIS_SYS_ID_LEN);
+ dyn->level = level;
+ listnode_add(dyn_cache, dyn);
+ }
+
+ snprintf(dyn->hostname, sizeof(dyn->hostname), "%s", hostname);
+ dyn->refresh = time(NULL);
+}
+
+void isis_dynhn_remove(const uint8_t *id)
+{
+ struct isis_dynhn *dyn;
+
+ dyn = dynhn_find_by_id(id);
+ if (!dyn)
+ return;
+ listnode_delete(dyn_cache, dyn);
+ XFREE(MTYPE_ISIS_DYNHN, dyn);
}
/*
* 2 0000.0000.0002 bar-gw
* * 0000.0000.0004 this-gw
*/
-void
-dynhn_print_all (struct vty *vty)
+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), unix_hostname (),
- VTY_NEWLINE);
- return;
+ struct listnode *node;
+ struct isis_dynhn *dyn;
+
+ vty_out(vty, "Level System ID Dynamic Hostname\n");
+ for (ALL_LIST_ELEMENTS_RO(dyn_cache, node, dyn)) {
+ vty_out(vty, "%-7d", dyn->level);
+ vty_out(vty, "%-15s%-15s\n", sysid_print(dyn->id),
+ dyn->hostname);
+ }
+
+ vty_out(vty, " * %s %s\n", sysid_print(isis->sysid),
+ cmd_hostname_get());
+ return;
}