Revert "staticd: Accept full blackhole typed keywords for ip_route_cmd"

This reverts commit 76b2bc97e7.

This change is wrong for several reasons:
- it is backwards incompatible - previously it was always possible to
  create blackhole/reject routes using shortened versions of the words
  and it suddenly became impossible if there's an interface in the
  system with the same name
- it uses operational data for validation which is prohibited
- it doesn't really solve the problem with inability to create routes
  using interface names like `bla` or `rej`

staticd/static_nb_config.c

@@ -136,8 +136,7 @@ static bool static_nexthop_create(struct nb_cb_create_args *args)
 	switch (args->event) {
 	case NB_EV_VALIDATE:
 		ifname = yang_dnode_get_string(args->dnode, "interface");
-		nh_type = yang_dnode_get_enum(args->dnode, "nh-type");
+		if (ifname != NULL) {
-		if (ifname != NULL && nh_type != STATIC_BLACKHOLE) {
 			if (strcasecmp(ifname, "Null0") == 0
 			    || strcasecmp(ifname, "reject") == 0
 			    || strcasecmp(ifname, "blackhole") == 0) {
@@ -465,33 +464,10 @@ static int static_nexthop_bh_type_modify(struct nb_cb_modify_args *args)
 {
 	struct static_nexthop *nh;
 	enum static_nh_type nh_type;
-	const char *nh_ifname;
-	const char *nh_vrf;
 
 	switch (args->event) {
 	case NB_EV_VALIDATE:
 		nh_type = yang_dnode_get_enum(args->dnode, "../nh-type");
-		nh_ifname = yang_dnode_get_string(args->dnode, "../interface");
-		nh_vrf = yang_dnode_get_string(args->dnode, "../vrf");
-		if (nh_ifname && nh_vrf) {
-			struct vrf *vrf = vrf_lookup_by_name(nh_vrf);
-
-			if (!vrf) {
-				snprintf(args->errmsg, args->errmsg_len,
-					 "nexthop vrf %s not found", nh_vrf);
-				return NB_ERR_VALIDATION;
-			}
-
-			struct interface *ifp = if_lookup_by_name(nh_ifname,
-								  vrf->vrf_id);
-
-			if (ifp && (!strmatch(nh_ifname, "blackhole") ||
-				    !strmatch(nh_ifname, "reject"))) {
-				snprintf(args->errmsg, args->errmsg_len,
-					 "nexthop interface name must be (reject, blackhole)");
-				return NB_ERR_VALIDATION;
-			}
-		}
 		if (nh_type != STATIC_BLACKHOLE) {
 			snprintf(args->errmsg, args->errmsg_len,
 				 "nexthop type is not the blackhole type");

staticd/static_vty.c

@@ -60,8 +60,6 @@ struct static_route_args {
 	bool bfd_multi_hop;
 	const char *bfd_source;
 	const char *bfd_profile;
-
-	const char *input;
 };
 
 static int static_route_nb_run(struct vty *vty, struct static_route_args *args)
@@ -153,20 +151,9 @@ static int static_route_nb_run(struct vty *vty, struct static_route_args *args)
 	else
 		buf_gate_str = "";
 
-	if (args->gateway == NULL && args->interface_name == NULL) {
+	if (args->gateway == NULL && args->interface_name == NULL)
 		type = STATIC_BLACKHOLE;
-		/* If this is blackhole/reject flagged route, then
+	else if (args->gateway && args->interface_name) {
-		 * specify interface_name with the value of what was really
-		 * entered.
-		 * interface_name will be validated later in NB functions
-		 * to check if we don't create blackhole/reject routes that
-		 * match the real interface names.
-		 * E.g.: `ip route 10.0.0.1/32 bla` will create a blackhole
-		 * route despite the real interface named `bla` exists.
-		 */
-		if (args->input)
-			args->interface_name = args->input;
-	} else if (args->gateway && args->interface_name) {
 		if (args->afi == AFI_IP)
 			type = STATIC_IPV4_GATEWAY_IFNAME;
 		else
@@ -553,8 +540,6 @@ DEFPY_YANG(ip_route_blackhole,
       "Table to configure\n"
       "The table number to configure\n")
 {
-	int idx_flag = 0;
-
 	struct static_route_args args = {
 		.delete = !!no,
 		.afi = AFI_IP,
@@ -569,9 +554,6 @@ DEFPY_YANG(ip_route_blackhole,
 		.vrf = vrf,
 	};
 
-	if (flag && argv_find(argv, argc, flag, &idx_flag))
-		args.input = argv[idx_flag]->arg;
-
 	return static_route_nb_run(vty, &args);
 }
 
@@ -600,8 +582,6 @@ DEFPY_YANG(ip_route_blackhole_vrf,
       "Table to configure\n"
       "The table number to configure\n")
 {
-	int idx_flag = 0;
-
 	struct static_route_args args = {
 		.delete = !!no,
 		.afi = AFI_IP,
@@ -623,9 +603,6 @@ DEFPY_YANG(ip_route_blackhole_vrf,
 	 */
 	assert(args.prefix);
 
-	if (flag && argv_find(argv, argc, flag, &idx_flag))
-		args.input = argv[idx_flag]->arg;
-
 	return static_route_nb_run(vty, &args);
 }
 
@@ -916,8 +893,6 @@ DEFPY_YANG(ipv6_route_blackhole,
       "Table to configure\n"
       "The table number to configure\n")
 {
-	int idx_flag = 0;
-
 	struct static_route_args args = {
 		.delete = !!no,
 		.afi = AFI_IP6,
@@ -932,9 +907,6 @@ DEFPY_YANG(ipv6_route_blackhole,
 		.vrf = vrf,
 	};
 
-	if (flag && argv_find(argv, argc, flag, &idx_flag))
-		args.input = argv[idx_flag]->arg;
-
 	return static_route_nb_run(vty, &args);
 }
 
@@ -963,8 +935,6 @@ DEFPY_YANG(ipv6_route_blackhole_vrf,
       "Table to configure\n"
       "The table number to configure\n")
 {
-	int idx_flag = 0;
-
 	struct static_route_args args = {
 		.delete = !!no,
 		.afi = AFI_IP6,
@@ -986,9 +956,6 @@ DEFPY_YANG(ipv6_route_blackhole_vrf,
 	 */
 	assert(args.prefix);
 
-	if (flag && argv_find(argv, argc, flag, &idx_flag))
-		args.input = argv[idx_flag]->arg;
-
 	return static_route_nb_run(vty, &args);
 }