1 files changed, 130 insertions, 0 deletions
diff --git a/src/conf_mode/protocols_rpki.py b/src/conf_mode/protocols_rpki.py
new file mode 100644
index 0000000..a59ecf3
--- /dev/null
+++ b/src/conf_mode/protocols_rpki.py
@@ -0,0 +1,130 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2021-2024 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 glob import glob
+from sys import exit
+
+from vyos.config import Config
+from vyos.pki import wrap_openssh_public_key
+from vyos.pki import wrap_openssh_private_key
+from vyos.template import render_to_string
+from vyos.utils.dict import dict_search_args
+from vyos.utils.file import write_file
+from vyos import ConfigError
+from vyos import frr
+from vyos import airbag
+airbag.enable()
+
+rpki_ssh_key_base = '/run/frr/id_rpki'
+
+def get_config(config=None):
+    if config:
+        conf = config
+    else:
+        conf = Config()
+    base = ['protocols', 'rpki']
+
+    rpki = conf.get_config_dict(base, key_mangling=('-', '_'),
+                                get_first_key=True, with_pki=True)
+    # Bail out early if configuration tree does not exist
+    if not conf.exists(base):
+        rpki.update({'deleted' : ''})
+        return rpki
+
+    # We have gathered the dict representation of the CLI, but there are default
+    # options which we need to update into the dictionary retrived.
+    rpki = conf.merge_defaults(rpki, recursive=True)
+
+    return rpki
+
+def verify(rpki):
+    if not rpki:
+        return None
+
+    if 'cache' in rpki:
+        preferences = []
+        for peer, peer_config in rpki['cache'].items():
+            for mandatory in ['port', 'preference']:
+                if mandatory not in peer_config:
+                    raise ConfigError(f'RPKI cache "{peer}" {mandatory} must be defined!')
+
+            if 'preference' in peer_config:
+                preference = peer_config['preference']
+                if preference in preferences:
+                    raise ConfigError(f'RPKI cache with preference {preference} already configured!')
+                preferences.append(preference)
+
+            if 'ssh' in peer_config:
+                if 'username' not in peer_config['ssh']:
+                    raise ConfigError('RPKI+SSH requires username to be defined!')
+
+                if 'key' not in peer_config['ssh'] or 'openssh' not in rpki['pki']:
+                    raise ConfigError('RPKI+SSH requires key to be defined!')
+
+                if peer_config['ssh']['key'] not in rpki['pki']['openssh']:
+                    raise ConfigError('RPKI+SSH key not found on PKI subsystem!')
+
+    return None
+
+def generate(rpki):
+    for key in glob(f'{rpki_ssh_key_base}*'):
+        os.unlink(key)
+
+    if not rpki:
+        return
+
+    if 'cache' in rpki:
+        for cache, cache_config in rpki['cache'].items():
+            if 'ssh' in cache_config:
+                key_name = cache_config['ssh']['key']
+                public_key_data = dict_search_args(rpki['pki'], 'openssh', key_name, 'public', 'key')
+                public_key_type = dict_search_args(rpki['pki'], 'openssh', key_name, 'public', 'type')
+                private_key_data = dict_search_args(rpki['pki'], 'openssh', key_name, 'private', 'key')
+
+                cache_config['ssh']['public_key_file'] = f'{rpki_ssh_key_base}_{cache}.pub'
+                cache_config['ssh']['private_key_file'] = f'{rpki_ssh_key_base}_{cache}'
+
+                write_file(cache_config['ssh']['public_key_file'], wrap_openssh_public_key(public_key_data, public_key_type))
+                write_file(cache_config['ssh']['private_key_file'], wrap_openssh_private_key(private_key_data))
+
+    rpki['new_frr_config'] = render_to_string('frr/rpki.frr.j2', rpki)
+
+    return None
+
+def apply(rpki):
+    bgp_daemon = 'bgpd'
+
+    # Save original configuration prior to starting any commit actions
+    frr_cfg = frr.FRRConfig()
+    frr_cfg.load_configuration(bgp_daemon)
+    frr_cfg.modify_section('^rpki', stop_pattern='^exit', remove_stop_mark=True)
+    if 'new_frr_config' in rpki:
+        frr_cfg.add_before(frr.default_add_before, rpki['new_frr_config'])
+
+    frr_cfg.commit_configuration(bgp_daemon)
+    return None
+
+if __name__ == '__main__':
+    try:
+        c = get_config()
+        verify(c)
+        generate(c)
+        apply(c)
+    except ConfigError as e:
+        print(e)
+        exit(1)