lib: introduce new northbound API

Signed-off-by: Renato Westphal <renato@opensourcerouting.org>

4 files changed, 178 insertions, 0 deletions

diff --git a/yang/frr-module-translator.yang b/yang/frr-module-translator.yang
new file mode 100644
index 000000000..3d64ec539
--- /dev/null
+++ b/yang/frr-module-translator.yang
@@ -0,0 +1,68 @@
+module frr-module-translator {
+  yang-version 1.1;
+  namespace "http://frrouting.org/yang/frr-module-translator";
+  prefix frr-module-translator;
+
+  organization
+    "Free Range Routing";
+  contact
+    "FRR Users List:       <mailto:frog@lists.frrouting.org>
+     FRR Development List: <mailto:dev@lists.frrouting.org>";
+  description
+    "A model for FRR YANG module translators.";
+
+  revision 2018-07-31 {
+    description
+      "Initial revision.";
+  }
+
+  container frr-module-translator {
+    leaf family {
+      type string {
+        length "0 .. 32";
+      }
+      mandatory true;
+      description
+        "Family of YANG models.";
+    }
+    list module {
+      key "name";
+      ordered-by user;
+      description
+        "YANG module.";
+
+      leaf name {
+        type string;
+        description
+          "Module name.";
+      }
+      leaf deviations {
+        type string;
+        mandatory true;
+        description
+          "Module containing the YANG deviations.";
+      }
+      list mappings {
+        key "custom";
+        description
+          "YANG mappings between the custom module and FRR native modules.";
+
+        leaf custom {
+          type string {
+            length "0 .. 256";
+          }
+          description
+            "YANG path of the custom module.";
+        }
+        leaf native {
+          type string {
+            length "0 .. 256";
+          }
+          mandatory true;
+          description
+            "Corresponding path of the native YANG modules";
+        }
+      }
+    }
+  }
+}
diff --git a/yang/libyang_plugins/frr_user_types.c b/yang/libyang_plugins/frr_user_types.c
new file mode 100644
index 000000000..4814f5bc1
--- /dev/null
+++ b/yang/libyang_plugins/frr_user_types.c
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2018  NetDEF, Inc.
+ *                     Renato Westphal
+ *
+ * This program 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 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; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <zebra.h>
+
+#include "prefix.h"
+
+#include <libyang/user_types.h>
+
+static int ipv4_address_store_clb(const char *type_name, const char *value_str,
+				  lyd_val *value, char **err_msg)
+{
+	value->ptr = malloc(sizeof(struct in_addr));
+	if (!value->ptr)
+		return 1;
+
+	if (inet_pton(AF_INET, value_str, value->ptr) != 1) {
+		free(value->ptr);
+		return 1;
+	}
+
+	return 0;
+}
+
+static int ipv6_address_store_clb(const char *type_name, const char *value_str,
+				  lyd_val *value, char **err_msg)
+{
+	value->ptr = malloc(INET6_ADDRSTRLEN);
+	if (!value->ptr)
+		return 1;
+
+	if (inet_pton(AF_INET6, value_str, value->ptr) != 1) {
+		free(value->ptr);
+		return 1;
+	}
+
+	return 0;
+}
+
+static int ipv4_prefix_store_clb(const char *type_name, const char *value_str,
+				 lyd_val *value, char **err_msg)
+{
+	value->ptr = malloc(sizeof(struct prefix_ipv4));
+	if (!value->ptr)
+		return 1;
+
+	if (str2prefix_ipv4(value_str, value->ptr) == 0) {
+		free(value->ptr);
+		return 1;
+	}
+
+	return 0;
+}
+
+static int ipv6_prefix_store_clb(const char *type_name, const char *value_str,
+				 lyd_val *value, char **err_msg)
+{
+	value->ptr = malloc(sizeof(struct prefix_ipv6));
+	if (!value->ptr)
+		return 1;
+
+	if (str2prefix_ipv6(value_str, value->ptr) == 0) {
+		free(value->ptr);
+		return 1;
+	}
+
+	return 0;
+}
+
+struct lytype_plugin_list frr_user_types[] = {
+	{"ietf-inet-types", "2013-07-15", "ipv4-address",
+	 ipv4_address_store_clb, free},
+	{"ietf-inet-types", "2013-07-15", "ipv4-address-no-zone",
+	 ipv4_address_store_clb, free},
+	{"ietf-inet-types", "2013-07-15", "ipv6-address",
+	 ipv6_address_store_clb, free},
+	{"ietf-inet-types", "2013-07-15", "ipv6-address-no-zone",
+	 ipv6_address_store_clb, free},
+	{"ietf-inet-types", "2013-07-15", "ipv4-prefix", ipv4_prefix_store_clb,
+	 free},
+	{"ietf-inet-types", "2013-07-15", "ipv6-prefix", ipv6_prefix_store_clb,
+	 free},
+	{NULL, NULL, NULL, NULL, NULL} /* terminating item */
+};
diff --git a/yang/libyang_plugins/subdir.am b/yang/libyang_plugins/subdir.am
new file mode 100644
index 000000000..956d22587
--- /dev/null
+++ b/yang/libyang_plugins/subdir.am
@@ -0,0 +1,9 @@
+#
+# libyang user types
+#
+libyang_plugins_LTLIBRARIES += yang/libyang_plugins/frr_user_types.la
+
+yang_libyang_plugins_frr_user_types_la_CFLAGS = $(WERROR)
+yang_libyang_plugins_frr_user_types_la_LDFLAGS = -avoid-version -module -shared -export-dynamic
+yang_libyang_plugins_frr_user_types_la_LIBADD =
+yang_libyang_plugins_frr_user_types_la_SOURCES = yang/libyang_plugins/frr_user_types.c
diff --git a/yang/subdir.am b/yang/subdir.am
new file mode 100644
index 000000000..b290f9b27
--- /dev/null
+++ b/yang/subdir.am
@@ -0,0 +1 @@
+dist_yangmodels_DATA += yang/frr-module-translator.yang