T6486: T6379: Rewrite generate openvpn client-config

This command helps to generate users `.ovpn` files
Rewrite `generate openvpn client-config` to use Config()
It needs to get the default values as `ConfigTreeQuery` is
not supporting default values.

Fixed "ignores configured protocol type" if TCP is used
Fixed lzo, was used even if lzo not configured
Fixed encryption is not parse the dict

src/op_mode/generate_ovpn_client_file.py

@@ -19,42 +19,53 @@
 from jinja2 import Template
 from textwrap import fill
 
-from vyos.configquery import ConfigTreeQuery
+from vyos.config import Config
 from vyos.ifconfig import Section
 
 client_config = """
 
 client
 nobind
-remote {{ remote_host }} {{ port }}
+remote {{ local_host if local_host else 'x.x.x.x' }} {{ port }}
 remote-cert-tls server
-proto {{ 'tcp-client' if protocol == 'tcp-active' else 'udp' }}
-dev {{ device }}
-dev-type {{ device }}
+proto {{ 'tcp-client' if protocol == 'tcp-passive' else 'udp' }}
+dev {{ device_type }}
+dev-type {{ device_type }}
 persist-key
 persist-tun
 verb 3
 
 # Encryption options
+{# Define the encryption map #}
+{% set encryption_map = {
+    'des': 'DES-CBC',
+    '3des': 'DES-EDE3-CBC',
+    'bf128': 'BF-CBC',
+    'bf256': 'BF-CBC',
+    'aes128gcm': 'AES-128-GCM',
+    'aes128': 'AES-128-CBC',
+    'aes192gcm': 'AES-192-GCM',
+    'aes192': 'AES-192-CBC',
+    'aes256gcm': 'AES-256-GCM',
+    'aes256': 'AES-256-CBC'
+} %}
+
 {% if encryption is defined and encryption is not none %}
-{%   if encryption.cipher is defined and encryption.cipher is not none %}
-cipher {{ encryption.cipher }}
-{%     if encryption.cipher == 'bf128' %}
-keysize 128
-{%     elif encryption.cipher == 'bf256' %}
-keysize 256
+{%     if encryption.ncp_ciphers is defined and encryption.ncp_ciphers is not none %}
+cipher {% for algo in encryption.ncp_ciphers %}
+{{ encryption_map[algo] if algo in encryption_map.keys() else algo }}{% if not loop.last %}:{% endif %}
+{%      endfor %}
+
+data-ciphers {% for algo in encryption.ncp_ciphers %}
+{{ encryption_map[algo] if algo in encryption_map.keys() else algo }}{% if not loop.last %}:{% endif %}
+{%      endfor %}
 {%     endif %}
-{%   endif %}
-{%   if encryption.ncp_ciphers is defined and encryption.ncp_ciphers is not none %}
-data-ciphers {{ encryption.ncp_ciphers }}
-{%   endif %}
 {% endif %}
 
 {% if hash is defined and hash is not none %}
 auth {{ hash }}
 {% endif %}
-keysize 256
-comp-lzo {{ '' if use_lzo_compression is defined else 'no' }}
+{{ 'comp-lzo' if use_lzo_compression is defined else '' }}
 
 <ca>
 -----BEGIN CERTIFICATE-----
@@ -79,7 +90,7 @@
 
 """
 
-config = ConfigTreeQuery()
+config = Config()
 base = ['interfaces', 'openvpn']
 
 if not config.exists(base):
@@ -89,10 +100,22 @@
 
 if __name__ == '__main__':
     parser = argparse.ArgumentParser()
-    parser.add_argument("-i", "--interface", type=str, help='OpenVPN interface the client is connecting to', required=True)
-    parser.add_argument("-a", "--ca", type=str, help='OpenVPN CA cerificate', required=True)
-    parser.add_argument("-c", "--cert", type=str, help='OpenVPN client cerificate', required=True)
-    parser.add_argument("-k", "--key", type=str, help='OpenVPN client cerificate key', action="store")
+    parser.add_argument(
+        "-i",
+        "--interface",
+        type=str,
+        help='OpenVPN interface the client is connecting to',
+        required=True,
+    )
+    parser.add_argument(
+        "-a", "--ca", type=str, help='OpenVPN CA cerificate', required=True
+    )
+    parser.add_argument(
+        "-c", "--cert", type=str, help='OpenVPN client cerificate', required=True
+    )
+    parser.add_argument(
+        "-k", "--key", type=str, help='OpenVPN client cerificate key', action="store"
+    )
     args = parser.parse_args()
 
     interface = args.interface
@@ -114,33 +137,27 @@
     if not config.exists(['pki', 'certificate', cert, 'private', 'key']):
         exit(f'OpenVPN certificate key "{key}" does not exist!')
 
-    ca = config.value(['pki', 'ca', ca, 'certificate'])
+    config = config.get_config_dict(
+        base + [interface],
+        key_mangling=('-', '_'),
+        get_first_key=True,
+        with_recursive_defaults=True,
+        with_pki=True,
+    )
+
+    ca = config['pki']['ca'][ca]['certificate']
     ca = fill(ca, width=64)
-    cert = config.value(['pki', 'certificate', cert, 'certificate'])
+    cert = config['pki']['certificate'][cert]['certificate']
     cert = fill(cert, width=64)
-    key = config.value(['pki', 'certificate', key, 'private', 'key'])
+    key = config['pki']['certificate'][key]['private']['key']
     key = fill(key, width=64)
-    remote_host = config.value(base + [interface, 'local-host'])
-
-    ovpn_conf = config.get_config_dict(base + [interface], key_mangling=('-', '_'), get_first_key=True)
-
-    port = '1194' if 'local_port' not in ovpn_conf else ovpn_conf['local_port']
-    proto = 'udp' if 'protocol' not in ovpn_conf else ovpn_conf['protocol']
-    device = 'tun' if 'device_type' not in ovpn_conf else ovpn_conf['device_type']
-
-    config = {
-        'interface'   : interface,
-        'ca'          : ca,
-        'cert'        : cert,
-        'key'         : key,
-        'device'      : device,
-        'port'        : port,
-        'proto'       : proto,
-        'remote_host' : remote_host,
-        'address'     : [],
-    }
-
-# Clear out terminal first
-print('\x1b[2J\x1b[H')
-client = Template(client_config, trim_blocks=True).render(config)
-print(client)
+
+    config['ca'] = ca
+    config['cert'] = cert
+    config['key'] = key
+    config['port'] = '1194' if 'local_port' not in config else config['local_port']
+
+    # Clear out terminal first
+    print('\x1b[2J\x1b[H')
+    client = Template(client_config, trim_blocks=True).render(config)
+    print(client)