From eba64f79cc9090a1a706291442dc02597e359cac Mon Sep 17 00:00:00 2001
From: Christian Hopps <chopps@labn.net>
Date: Sun, 21 Jan 2024 13:12:39 +0000
Subject: lib: add northbound support to distribute-list code.

Signed-off-by: Christian Hopps <chopps@labn.net>
---
 lib/distribute.c | 123 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 122 insertions(+), 1 deletion(-)

(limited to 'lib/distribute.c')

diff --git a/lib/distribute.c b/lib/distribute.c
index 65487676d..719bac4fa 100644
--- a/lib/distribute.c
+++ b/lib/distribute.c
@@ -274,7 +274,8 @@ int distribute_list_no_parser(struct vty *vty, bool prefix, bool v4,
 
 	ret = distfn(ctx, ifname, type, list);
 	if (!ret) {
-		vty_out(vty, "distribute list doesn't exist\n");
+		if (vty)
+			vty_out(vty, "distribute list doesn't exist\n");
 		return CMD_WARNING_CONFIG_FAILED;
 	}
 
@@ -443,6 +444,126 @@ int config_write_distribute(struct vty *vty,
 	return write;
 }
 
+/* ---------- */
+/* Northbound */
+/* ---------- */
+
+int group_distribute_list_create_helper(
+	struct nb_cb_create_args *args, struct distribute_ctx *ctx)
+{
+	/* The code currently doesn't require this as it uses a global */
+	/* nb_running_set_entry(args->dnode, ctx);                     */
+	return NB_OK;
+}
+
+/*
+ * XPath: /frr-ripd:ripd/instance/distribute-lists/distribute-list/{in,out}/{access,prefix}-list
+ */
+
+int group_distribute_list_destroy(struct nb_cb_destroy_args *args)
+{
+	nb_running_unset_entry(args->dnode);
+	return NB_OK;
+}
+
+static int distribute_list_leaf_update(const struct lyd_node *dnode,
+				       int ip_version, bool no)
+{
+	struct lyd_node *dir_node = lyd_parent(dnode);
+	struct lyd_node_inner *list_node = dir_node->parent;
+	struct lyd_node *intf_key = list_node->child;
+	bool ipv4 = ip_version == 4 ? true : false;
+	bool prefix;
+
+	/* The code currently doesn't require this as it uses a global */
+	/* ctx = nb_running_get_entry_non_rec(&list_node->node, NULL, false); */
+
+	prefix = dnode->schema->name[0] == 'p' ? true : false;
+	if (no)
+		distribute_list_no_parser(NULL, prefix, ipv4,
+					  dir_node->schema->name,
+					  lyd_get_value(dnode),
+					  lyd_get_value(intf_key));
+	else
+		distribute_list_parser(prefix, ipv4,
+				       dir_node->schema->name,
+				       lyd_get_value(dnode),
+				       lyd_get_value(intf_key));
+	return NB_OK;
+}
+
+static int distribute_list_leaf_modify(struct nb_cb_modify_args *args,
+				       int ip_version)
+{
+	if (args->event != NB_EV_APPLY)
+		return NB_OK;
+	return distribute_list_leaf_update(args->dnode, ip_version, false);
+}
+
+static int distribute_list_leaf_destroy(struct nb_cb_destroy_args *args,
+					int ip_version)
+{
+	if (args->event != NB_EV_APPLY)
+		return NB_OK;
+	return distribute_list_leaf_update(args->dnode, ip_version, true);
+}
+
+int group_distribute_list_ipv4_modify(struct nb_cb_modify_args *args)
+{
+	return distribute_list_leaf_modify(args, 4);
+}
+int group_distribute_list_ipv4_destroy(struct nb_cb_destroy_args *args)
+{
+	return distribute_list_leaf_destroy(args, 4);
+}
+int group_distribute_list_ipv6_modify(struct nb_cb_modify_args *args)
+{
+	return distribute_list_leaf_modify(args, 6);
+}
+int group_distribute_list_ipv6_destroy(struct nb_cb_destroy_args *args)
+{
+	return distribute_list_leaf_destroy(args, 6);
+}
+
+static int distribute_list_leaf_cli_show(struct vty *vty,
+					 const struct lyd_node *dnode,
+					 int ip_version)
+{
+	struct lyd_node *dir_node = lyd_parent(dnode);
+	struct lyd_node_inner *list_node = dir_node->parent;
+	struct lyd_node *intf_key = list_node->child;
+	bool ipv6 = ip_version == 6 ? true : false;
+	bool prefix;
+
+	prefix = dnode->schema->name[0] == 'p' ? true : false;
+	vty_out(vty,
+		" %sdistribute-list %s%s %s %s\n",
+		ipv6 ? "ipv6 " : "",
+		prefix ? "prefix " : "",
+		lyd_get_value(dnode),
+		dir_node->schema->name,
+		lyd_get_value(intf_key));
+
+	return NB_OK;
+}
+
+void group_distribute_list_ipv4_cli_show(struct vty *vty,
+					 const struct lyd_node *dnode,
+					 bool show_defaults)
+{
+	distribute_list_leaf_cli_show(vty, dnode, 4);
+}
+void group_distribute_list_ipv6_cli_show(struct vty *vty,
+					 const struct lyd_node *dnode,
+					 bool show_defaults)
+{
+	distribute_list_leaf_cli_show(vty, dnode, 6);
+}
+
+/* ------------- */
+/* Setup/Cleanup */
+/* ------------- */
+
 void distribute_list_delete(struct distribute_ctx **ctx)
 {
 	hash_clean_and_free(&(*ctx)->disthash,
-- 
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