1 files changed, 113 insertions, 0 deletions
diff --git a/src/conf_mode/protocols_static.py b/src/conf_mode/protocols_static.py
new file mode 100755
index 000000000..0de073a6d
--- /dev/null
+++ b/src/conf_mode/protocols_static.py
@@ -0,0 +1,113 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2021 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# 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, see <http://www.gnu.org/licenses/>.
+
+import os
+
+from sys import exit
+from sys import argv
+
+from vyos.config import Config
+from vyos.configverify import verify_route_maps
+from vyos.configverify import verify_vrf
+from vyos.template import render_to_string
+from vyos.util import call
+from vyos import ConfigError
+from vyos import frr
+from vyos import airbag
+airbag.enable()
+
+frr_daemon = 'staticd'
+
+def get_config(config=None):
+    if config:
+        conf = config
+    else:
+        conf = Config()
+
+    vrf = None
+    if len(argv) > 1:
+        vrf = argv[1]
+
+    base_path = ['protocols', 'static']
+    # eqivalent of the C foo ? 'a' : 'b' statement
+    base = vrf and ['vrf', 'name', vrf, 'protocols', 'static'] or base_path
+    static = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True)
+
+    # Assign the name of our VRF context
+    if vrf: static['vrf'] = vrf
+
+    return static
+
+def verify(static):
+    verify_route_maps(static)
+
+    for route in ['route', 'route6']:
+        # if there is no route(6) key in the dictionary we can immediately
+        # bail out early
+        if route not in static:
+            continue
+
+        # When leaking routes to other VRFs we must ensure that the destination
+        # VRF exists
+        for prefix, prefix_options in static[route].items():
+            # both the interface and next-hop CLI node can have a VRF subnode,
+            # thus we check this using a for loop
+            for type in ['interface', 'next_hop']:
+                if type in prefix_options:
+                    for interface, interface_config in prefix_options[type].items():
+                        verify_vrf(interface_config)
+
+    return None
+
+def generate(static):
+    static['new_frr_config'] = render_to_string('frr/static.frr.tmpl', static)
+    return None
+
+def apply(static):
+    # Save original configuration prior to starting any commit actions
+    frr_cfg = frr.FRRConfig()
+    frr_cfg.load_configuration(frr_daemon)
+
+    if 'vrf' in static:
+        vrf = static['vrf']
+        frr_cfg.modify_section(f'^vrf {vrf}$', '')
+    else:
+        frr_cfg.modify_section(r'^ip route .*', '')
+        frr_cfg.modify_section(r'^ipv6 route .*', '')
+
+    frr_cfg.add_before(r'(interface .*|line vty)', static['new_frr_config'])
+    frr_cfg.commit_configuration(frr_daemon)
+
+    # If FRR config is blank, rerun the blank commit x times due to frr-reload
+    # behavior/bug not properly clearing out on one commit.
+    if static['new_frr_config'] == '':
+        for a in range(5):
+            frr_cfg.commit_configuration(frr_daemon)
+
+    # Save configuration to /run/frr/{daemon}.conf
+    frr.save_configuration(frr_daemon)
+
+    return None
+
+if __name__ == '__main__':
+    try:
+        c = get_config()
+        verify(c)
+        generate(c)
+        apply(c)
+    except ConfigError as e:
+        print(e)
+        exit(1)