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-rw-r--r--lib/distribute.c709
1 files changed, 709 insertions, 0 deletions
diff --git a/lib/distribute.c b/lib/distribute.c
new file mode 100644
index 000000000..d5893a5bf
--- /dev/null
+++ b/lib/distribute.c
@@ -0,0 +1,709 @@
+/* Distribute list functions
+ * Copyright (C) 1998, 1999 Kunihiro Ishiguro
+ *
+ * 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 "hash.h"
+#include "if.h"
+#include "filter.h"
+#include "command.h"
+#include "distribute.h"
+#include "memory.h"
+
+/* Hash of distribute list. */
+struct hash *disthash;
+
+/* Hook functions. */
+void (*distribute_add_hook) (struct distribute *);
+void (*distribute_delete_hook) (struct distribute *);
+
+struct distribute *
+distribute_new ()
+{
+ struct distribute *new;
+
+ new = XMALLOC (MTYPE_DISTRIBUTE, sizeof (struct distribute));
+ memset (new, 0, sizeof (struct distribute));
+
+ return new;
+}
+
+/* Free distribute object. */
+void
+distribute_free (struct distribute *dist)
+{
+ if (dist->ifname)
+ free (dist->ifname);
+
+ if (dist->list[DISTRIBUTE_IN])
+ free (dist->list[DISTRIBUTE_IN]);
+ if (dist->list[DISTRIBUTE_OUT])
+ free (dist->list[DISTRIBUTE_OUT]);
+
+ if (dist->prefix[DISTRIBUTE_IN])
+ free (dist->prefix[DISTRIBUTE_IN]);
+ if (dist->prefix[DISTRIBUTE_OUT])
+ free (dist->prefix[DISTRIBUTE_OUT]);
+
+ XFREE (MTYPE_DISTRIBUTE, dist);
+}
+
+/* Lookup interface's distribute list. */
+struct distribute *
+distribute_lookup (char *ifname)
+{
+ struct distribute key;
+ struct distribute *dist;
+
+ key.ifname = ifname;
+
+ dist = hash_lookup (disthash, &key);
+
+ return dist;
+}
+
+void
+distribute_list_add_hook (void (*func) (struct distribute *))
+{
+ distribute_add_hook = func;
+}
+
+void
+distribute_list_delete_hook (void (*func) (struct distribute *))
+{
+ distribute_delete_hook = func;
+}
+
+void *
+distribute_hash_alloc (struct distribute *arg)
+{
+ struct distribute *dist;
+
+ dist = distribute_new ();
+ if (arg->ifname)
+ dist->ifname = strdup (arg->ifname);
+ else
+ dist->ifname = NULL;
+ return dist;
+}
+
+/* Make new distribute list and push into hash. */
+struct distribute *
+distribute_get (char *ifname)
+{
+ struct distribute key;
+
+ key.ifname = ifname;
+
+ return hash_get (disthash, &key, distribute_hash_alloc);
+}
+
+unsigned int
+distribute_hash_make (struct distribute *dist)
+{
+ unsigned int key;
+ int i;
+
+ key = 0;
+ if (dist->ifname)
+ for (i = 0; i < strlen (dist->ifname); i++)
+ key += dist->ifname[i];
+
+ return key;
+}
+
+/* If two distribute-list have same value then return 1 else return
+ 0. This function is used by hash package. */
+int
+distribute_cmp (struct distribute *dist1, struct distribute *dist2)
+{
+ if (dist1->ifname && dist2->ifname)
+ if (strcmp (dist1->ifname, dist2->ifname) == 0)
+ return 1;
+ if (! dist1->ifname && ! dist2->ifname)
+ return 1;
+ return 0;
+}
+
+/* Set access-list name to the distribute list. */
+struct distribute *
+distribute_list_set (char *ifname, enum distribute_type type, char *alist_name)
+{
+ struct distribute *dist;
+
+ dist = distribute_get (ifname);
+
+ if (type == DISTRIBUTE_IN)
+ {
+ if (dist->list[DISTRIBUTE_IN])
+ free (dist->list[DISTRIBUTE_IN]);
+ dist->list[DISTRIBUTE_IN] = strdup (alist_name);
+ }
+ if (type == DISTRIBUTE_OUT)
+ {
+ if (dist->list[DISTRIBUTE_OUT])
+ free (dist->list[DISTRIBUTE_OUT]);
+ dist->list[DISTRIBUTE_OUT] = strdup (alist_name);
+ }
+
+ /* Apply this distribute-list to the interface. */
+ (*distribute_add_hook) (dist);
+
+ return dist;
+}
+
+/* Unset distribute-list. If matched distribute-list exist then
+ return 1. */
+int
+distribute_list_unset (char *ifname, enum distribute_type type,
+ char *alist_name)
+{
+ struct distribute *dist;
+
+ dist = distribute_lookup (ifname);
+ if (!dist)
+ return 0;
+
+ if (type == DISTRIBUTE_IN)
+ {
+ if (!dist->list[DISTRIBUTE_IN])
+ return 0;
+ if (strcmp (dist->list[DISTRIBUTE_IN], alist_name) != 0)
+ return 0;
+
+ free (dist->list[DISTRIBUTE_IN]);
+ dist->list[DISTRIBUTE_IN] = NULL;
+ }
+
+ if (type == DISTRIBUTE_OUT)
+ {
+ if (!dist->list[DISTRIBUTE_OUT])
+ return 0;
+ if (strcmp (dist->list[DISTRIBUTE_OUT], alist_name) != 0)
+ return 0;
+
+ free (dist->list[DISTRIBUTE_OUT]);
+ dist->list[DISTRIBUTE_OUT] = NULL;
+ }
+
+ /* Apply this distribute-list to the interface. */
+ (*distribute_delete_hook) (dist);
+
+ /* If both out and in is NULL then free distribute list. */
+ if (dist->list[DISTRIBUTE_IN] == NULL &&
+ dist->list[DISTRIBUTE_OUT] == NULL &&
+ dist->prefix[DISTRIBUTE_IN] == NULL &&
+ dist->prefix[DISTRIBUTE_OUT] == NULL)
+ {
+ hash_release (disthash, dist);
+ distribute_free (dist);
+ }
+
+ return 1;
+}
+
+/* Set access-list name to the distribute list. */
+struct distribute *
+distribute_list_prefix_set (char *ifname, enum distribute_type type,
+ char *plist_name)
+{
+ struct distribute *dist;
+
+ dist = distribute_get (ifname);
+
+ if (type == DISTRIBUTE_IN)
+ {
+ if (dist->prefix[DISTRIBUTE_IN])
+ free (dist->prefix[DISTRIBUTE_IN]);
+ dist->prefix[DISTRIBUTE_IN] = strdup (plist_name);
+ }
+ if (type == DISTRIBUTE_OUT)
+ {
+ if (dist->prefix[DISTRIBUTE_OUT])
+ free (dist->prefix[DISTRIBUTE_OUT]);
+ dist->prefix[DISTRIBUTE_OUT] = strdup (plist_name);
+ }
+
+ /* Apply this distribute-list to the interface. */
+ (*distribute_add_hook) (dist);
+
+ return dist;
+}
+
+/* Unset distribute-list. If matched distribute-list exist then
+ return 1. */
+int
+distribute_list_prefix_unset (char *ifname, enum distribute_type type,
+ char *plist_name)
+{
+ struct distribute *dist;
+
+ dist = distribute_lookup (ifname);
+ if (!dist)
+ return 0;
+
+ if (type == DISTRIBUTE_IN)
+ {
+ if (!dist->prefix[DISTRIBUTE_IN])
+ return 0;
+ if (strcmp (dist->prefix[DISTRIBUTE_IN], plist_name) != 0)
+ return 0;
+
+ free (dist->prefix[DISTRIBUTE_IN]);
+ dist->prefix[DISTRIBUTE_IN] = NULL;
+ }
+
+ if (type == DISTRIBUTE_OUT)
+ {
+ if (!dist->prefix[DISTRIBUTE_OUT])
+ return 0;
+ if (strcmp (dist->prefix[DISTRIBUTE_OUT], plist_name) != 0)
+ return 0;
+
+ free (dist->prefix[DISTRIBUTE_OUT]);
+ dist->prefix[DISTRIBUTE_OUT] = NULL;
+ }
+
+ /* Apply this distribute-list to the interface. */
+ (*distribute_delete_hook) (dist);
+
+ /* If both out and in is NULL then free distribute list. */
+ if (dist->list[DISTRIBUTE_IN] == NULL &&
+ dist->list[DISTRIBUTE_OUT] == NULL &&
+ dist->prefix[DISTRIBUTE_IN] == NULL &&
+ dist->prefix[DISTRIBUTE_OUT] == NULL)
+ {
+ hash_release (disthash, dist);
+ distribute_free (dist);
+ }
+
+ return 1;
+}
+
+DEFUN (distribute_list_all,
+ distribute_list_all_cmd,
+ "distribute-list WORD (in|out)",
+ "Filter networks in routing updates\n"
+ "Access-list name\n"
+ "Filter incoming routing updates\n"
+ "Filter outgoing routing updates\n")
+{
+ enum distribute_type type;
+ struct distribute *dist;
+
+ /* Check of distribute list type. */
+ if (strncmp (argv[1], "i", 1) == 0)
+ type = DISTRIBUTE_IN;
+ else if (strncmp (argv[1], "o", 1) == 0)
+ type = DISTRIBUTE_OUT;
+ else
+ {
+ vty_out (vty, "distribute list direction must be [in|out]%s",
+ VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ /* Get interface name corresponding distribute list. */
+ dist = distribute_list_set (NULL, type, argv[0]);
+
+ return CMD_SUCCESS;
+}
+
+DEFUN (no_distribute_list_all,
+ no_distribute_list_all_cmd,
+ "no distribute-list WORD (in|out)",
+ NO_STR
+ "Filter networks in routing updates\n"
+ "Access-list name\n"
+ "Filter incoming routing updates\n"
+ "Filter outgoing routing updates\n")
+{
+ int ret;
+ enum distribute_type type;
+
+ /* Check of distribute list type. */
+ if (strncmp (argv[1], "i", 1) == 0)
+ type = DISTRIBUTE_IN;
+ else if (strncmp (argv[1], "o", 1) == 0)
+ type = DISTRIBUTE_OUT;
+ else
+ {
+ vty_out (vty, "distribute list direction must be [in|out]%s",
+ VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ ret = distribute_list_unset (NULL, type, argv[0]);
+ if (! ret)
+ {
+ vty_out (vty, "distribute list doesn't exist%s", VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+ return CMD_SUCCESS;
+}
+
+DEFUN (distribute_list,
+ distribute_list_cmd,
+ "distribute-list WORD (in|out) WORD",
+ "Filter networks in routing updates\n"
+ "Access-list name\n"
+ "Filter incoming routing updates\n"
+ "Filter outgoing routing updates\n"
+ "Interface name\n")
+{
+ enum distribute_type type;
+ struct distribute *dist;
+
+ /* Check of distribute list type. */
+ if (strncmp (argv[1], "i", 1) == 0)
+ type = DISTRIBUTE_IN;
+ else if (strncmp (argv[1], "o", 1) == 0)
+ type = DISTRIBUTE_OUT;
+ else
+ {
+ vty_out (vty, "distribute list direction must be [in|out]%s", VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ /* Get interface name corresponding distribute list. */
+ dist = distribute_list_set (argv[2], type, argv[0]);
+
+ return CMD_SUCCESS;
+}
+
+DEFUN (no_districute_list, no_distribute_list_cmd,
+ "no distribute-list WORD (in|out) WORD",
+ NO_STR
+ "Filter networks in routing updates\n"
+ "Access-list name\n"
+ "Filter incoming routing updates\n"
+ "Filter outgoing routing updates\n"
+ "Interface name\n")
+{
+ int ret;
+ enum distribute_type type;
+
+ /* Check of distribute list type. */
+ if (strncmp (argv[1], "i", 1) == 0)
+ type = DISTRIBUTE_IN;
+ else if (strncmp (argv[1], "o", 1) == 0)
+ type = DISTRIBUTE_OUT;
+ else
+ {
+ vty_out (vty, "distribute list direction must be [in|out]%s", VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ ret = distribute_list_unset (argv[2], type, argv[0]);
+ if (! ret)
+ {
+ vty_out (vty, "distribute list doesn't exist%s", VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+ return CMD_SUCCESS;
+}
+
+DEFUN (districute_list_prefix_all,
+ distribute_list_prefix_all_cmd,
+ "distribute-list prefix WORD (in|out)",
+ "Filter networks in routing updates\n"
+ "Filter prefixes in routing updates\n"
+ "Name of an IP prefix-list\n"
+ "Filter incoming routing updates\n"
+ "Filter outgoing routing updates\n")
+{
+ enum distribute_type type;
+ struct distribute *dist;
+
+ /* Check of distribute list type. */
+ if (strncmp (argv[1], "i", 1) == 0)
+ type = DISTRIBUTE_IN;
+ else if (strncmp (argv[1], "o", 1) == 0)
+ type = DISTRIBUTE_OUT;
+ else
+ {
+ vty_out (vty, "distribute list direction must be [in|out]%s",
+ VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ /* Get interface name corresponding distribute list. */
+ dist = distribute_list_prefix_set (NULL, type, argv[0]);
+
+ return CMD_SUCCESS;
+}
+
+DEFUN (no_districute_list_prefix_all,
+ no_distribute_list_prefix_all_cmd,
+ "no distribute-list prefix WORD (in|out)",
+ NO_STR
+ "Filter networks in routing updates\n"
+ "Filter prefixes in routing updates\n"
+ "Name of an IP prefix-list\n"
+ "Filter incoming routing updates\n"
+ "Filter outgoing routing updates\n")
+{
+ int ret;
+ enum distribute_type type;
+
+ /* Check of distribute list type. */
+ if (strncmp (argv[1], "i", 1) == 0)
+ type = DISTRIBUTE_IN;
+ else if (strncmp (argv[1], "o", 1) == 0)
+ type = DISTRIBUTE_OUT;
+ else
+ {
+ vty_out (vty, "distribute list direction must be [in|out]%s",
+ VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ ret = distribute_list_prefix_unset (NULL, type, argv[0]);
+ if (! ret)
+ {
+ vty_out (vty, "distribute list doesn't exist%s", VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+ return CMD_SUCCESS;
+}
+
+DEFUN (districute_list_prefix, distribute_list_prefix_cmd,
+ "distribute-list prefix WORD (in|out) WORD",
+ "Filter networks in routing updates\n"
+ "Filter prefixes in routing updates\n"
+ "Name of an IP prefix-list\n"
+ "Filter incoming routing updates\n"
+ "Filter outgoing routing updates\n"
+ "Interface name\n")
+{
+ enum distribute_type type;
+ struct distribute *dist;
+
+ /* Check of distribute list type. */
+ if (strncmp (argv[1], "i", 1) == 0)
+ type = DISTRIBUTE_IN;
+ else if (strncmp (argv[1], "o", 1) == 0)
+ type = DISTRIBUTE_OUT;
+ else
+ {
+ vty_out (vty, "distribute list direction must be [in|out]%s",
+ VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ /* Get interface name corresponding distribute list. */
+ dist = distribute_list_prefix_set (argv[2], type, argv[0]);
+
+ return CMD_SUCCESS;
+}
+
+DEFUN (no_districute_list_prefix, no_distribute_list_prefix_cmd,
+ "no distribute-list prefix WORD (in|out) WORD",
+ NO_STR
+ "Filter networks in routing updates\n"
+ "Filter prefixes in routing updates\n"
+ "Name of an IP prefix-list\n"
+ "Filter incoming routing updates\n"
+ "Filter outgoing routing updates\n"
+ "Interface name\n")
+{
+ int ret;
+ enum distribute_type type;
+
+ /* Check of distribute list type. */
+ if (strncmp (argv[1], "i", 1) == 0)
+ type = DISTRIBUTE_IN;
+ else if (strncmp (argv[1], "o", 1) == 0)
+ type = DISTRIBUTE_OUT;
+ else
+ {
+ vty_out (vty, "distribute list direction must be [in|out]%s",
+ VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ ret = distribute_list_prefix_unset (argv[2], type, argv[0]);
+ if (! ret)
+ {
+ vty_out (vty, "distribute list doesn't exist%s", VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+ return CMD_SUCCESS;
+}
+
+int
+config_show_distribute (struct vty *vty)
+{
+ int i;
+ struct hash_backet *mp;
+ struct distribute *dist;
+
+ /* Output filter configuration. */
+ dist = distribute_lookup (NULL);
+ if (dist && (dist->list[DISTRIBUTE_OUT] || dist->prefix[DISTRIBUTE_OUT]))
+ {
+ vty_out (vty, " Outgoing update filter list for all interface is");
+ if (dist->list[DISTRIBUTE_OUT])
+ vty_out (vty, " %s", dist->list[DISTRIBUTE_OUT]);
+ if (dist->prefix[DISTRIBUTE_OUT])
+ vty_out (vty, "%s (prefix-list) %s",
+ dist->list[DISTRIBUTE_OUT] ? "," : "",
+ dist->prefix[DISTRIBUTE_OUT]);
+ vty_out (vty, "%s", VTY_NEWLINE);
+ }
+ else
+ vty_out (vty, " Outgoing update filter list for all interface is not set%s", VTY_NEWLINE);
+
+ for (i = 0; i < disthash->size; i++)
+ for (mp = disthash->index[i]; mp; mp = mp->next)
+ {
+ dist = mp->data;
+ if (dist->ifname)
+ if (dist->list[DISTRIBUTE_OUT] || dist->prefix[DISTRIBUTE_OUT])
+ {
+ vty_out (vty, " %s filtered by", dist->ifname);
+ if (dist->list[DISTRIBUTE_OUT])
+ vty_out (vty, " %s", dist->list[DISTRIBUTE_OUT]);
+ if (dist->prefix[DISTRIBUTE_OUT])
+ vty_out (vty, "%s (prefix-list) %s",
+ dist->list[DISTRIBUTE_OUT] ? "," : "",
+ dist->prefix[DISTRIBUTE_OUT]);
+ vty_out (vty, "%s", VTY_NEWLINE);
+ }
+ }
+
+
+ /* Input filter configuration. */
+ dist = distribute_lookup (NULL);
+ if (dist && (dist->list[DISTRIBUTE_IN] || dist->prefix[DISTRIBUTE_IN]))
+ {
+ vty_out (vty, " Incoming update filter list for all interface is");
+ if (dist->list[DISTRIBUTE_IN])
+ vty_out (vty, " %s", dist->list[DISTRIBUTE_IN]);
+ if (dist->prefix[DISTRIBUTE_IN])
+ vty_out (vty, "%s (prefix-list) %s",
+ dist->list[DISTRIBUTE_IN] ? "," : "",
+ dist->prefix[DISTRIBUTE_IN]);
+ vty_out (vty, "%s", VTY_NEWLINE);
+ }
+ else
+ vty_out (vty, " Incoming update filter list for all interface is not set%s", VTY_NEWLINE);
+
+ for (i = 0; i < disthash->size; i++)
+ for (mp = disthash->index[i]; mp; mp = mp->next)
+ {
+ dist = mp->data;
+ if (dist->ifname)
+ if (dist->list[DISTRIBUTE_IN] || dist->prefix[DISTRIBUTE_IN])
+ {
+ vty_out (vty, " %s filtered by", dist->ifname);
+ if (dist->list[DISTRIBUTE_IN])
+ vty_out (vty, " %s", dist->list[DISTRIBUTE_IN]);
+ if (dist->prefix[DISTRIBUTE_IN])
+ vty_out (vty, "%s (prefix-list) %s",
+ dist->list[DISTRIBUTE_IN] ? "," : "",
+ dist->prefix[DISTRIBUTE_IN]);
+ vty_out (vty, "%s", VTY_NEWLINE);
+ }
+ }
+ return 0;
+}
+
+/* Configuration write function. */
+int
+config_write_distribute (struct vty *vty)
+{
+ int i;
+ struct hash_backet *mp;
+ int write = 0;
+
+ for (i = 0; i < disthash->size; i++)
+ for (mp = disthash->index[i]; mp; mp = mp->next)
+ {
+ struct distribute *dist;
+
+ dist = mp->data;
+
+ if (dist->list[DISTRIBUTE_IN])
+ {
+ vty_out (vty, " distribute-list %s in %s%s",
+ dist->list[DISTRIBUTE_IN],
+ dist->ifname ? dist->ifname : "",
+ VTY_NEWLINE);
+ write++;
+ }
+
+ if (dist->list[DISTRIBUTE_OUT])
+ {
+ vty_out (vty, " distribute-list %s out %s%s",
+
+ dist->list[DISTRIBUTE_OUT],
+ dist->ifname ? dist->ifname : "",
+ VTY_NEWLINE);
+ write++;
+ }
+
+ if (dist->prefix[DISTRIBUTE_IN])
+ {
+ vty_out (vty, " distribute-list prefix %s in %s%s",
+ dist->prefix[DISTRIBUTE_IN],
+ dist->ifname ? dist->ifname : "",
+ VTY_NEWLINE);
+ write++;
+ }
+
+ if (dist->prefix[DISTRIBUTE_OUT])
+ {
+ vty_out (vty, " distribute-list prefix %s out %s%s",
+ dist->prefix[DISTRIBUTE_OUT],
+ dist->ifname ? dist->ifname : "",
+ VTY_NEWLINE);
+ write++;
+ }
+ }
+ return write;
+}
+
+/* Clear all distribute list. */
+void
+distribute_list_reset ()
+{
+ hash_clean (disthash, (void (*) (void *)) distribute_free);
+}
+
+/* Initialize distribute list related hash. */
+void
+distribute_list_init (int node)
+{
+ disthash = hash_create (distribute_hash_make, distribute_cmp);
+
+ install_element (node, &distribute_list_all_cmd);
+ install_element (node, &no_distribute_list_all_cmd);
+
+ install_element (node, &distribute_list_cmd);
+ install_element (node, &no_distribute_list_cmd);
+
+ install_element (node, &distribute_list_prefix_all_cmd);
+ install_element (node, &no_distribute_list_prefix_all_cmd);
+
+ install_element (node, &distribute_list_prefix_cmd);
+ install_element (node, &no_distribute_list_prefix_cmd);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-30 03:36:22 +0100