wireguard: T1802: add client name to configuration

(cherry picked from commit daf377aca3511e8ad74854828f3aaa1dd99f0a91)

2 files changed, 65 insertions, 19 deletions

diff --git a/op-mode-definitions/wireguard.xml.in b/op-mode-definitions/wireguard.xml.in
index 9cc979b7b..7e16d87e9 100644
--- a/op-mode-definitions/wireguard.xml.in
+++ b/op-mode-definitions/wireguard.xml.in
@@ -26,33 +26,53 @@
             </properties>
             <command>sudo ${vyos_op_scripts_dir}/wireguard.py --genkey --location "$4"</command>
           </tagNode>
-          <tagNode name="mobile-config">
+          <tagNode name="client-config">
             <properties>
-              <help>Generate QR code and movile configuration for Wireguard interface</help>
+              <help>Generate Client config QR code</help>
               <completionHelp>
-                <script>${vyos_completion_dir}/list_interfaces.py --type wireguard</script>
+                <list>&lt;client-name&gt;</list>
               </completionHelp>
             </properties>
             <children>
-              <tagNode name="server">
+              <tagNode name="interface">
                 <properties>
-                  <help>IP address or FQDN the client will connect to</help>
+                  <help>Local interface used for connection</help>
                   <completionHelp>
-                    <script>${vyos_completion_dir}/list_local_ips.sh --both</script>
-                    <list>&lt;hostname&gt;</list>
+                    <script>${vyos_completion_dir}/list_interfaces.py --type wireguard</script>
                   </completionHelp>
                 </properties>
-                <command>sudo ${vyos_op_scripts_dir}/wireguard_client.py --interface "$4" --server "$6"</command>
                 <children>
-                  <tagNode name="address">
+                  <tagNode name="server">
                     <properties>
-                      <help>IPv4/IPv6 address used on the client side</help>
+                      <help>IP address/FQDN used for client connection</help>
                       <completionHelp>
                         <script>${vyos_completion_dir}/list_local_ips.sh --both</script>
                         <list>&lt;hostname&gt;</list>
                       </completionHelp>
                     </properties>
-                    <command>sudo ${vyos_op_scripts_dir}/wireguard_client.py --interface "$4" --server "$6" --address "$8"</command>
+                    <command>sudo ${vyos_op_scripts_dir}/wireguard_client.py --name "$4" --interface "$6" --server "$8"</command>
+                    <children>
+                      <tagNode name="address">
+                        <properties>
+                          <help>IPv4/IPv6 address used by client</help>
+                          <completionHelp>
+                            <list>&lt;x.x.x.x&gt; &lt;h:h:h:h:h:h:h:h&gt;</list>
+                          </completionHelp>
+                        </properties>
+                        <command>sudo ${vyos_op_scripts_dir}/wireguard_client.py --name "$4" --interface "$6" --server "$8" --address "${10}"</command>
+                        <children>
+                          <tagNode name="address">
+                            <properties>
+                              <help>IPv4/IPv6 address used by client</help>
+                              <completionHelp>
+                                <list>&lt;x.x.x.x&gt; &lt;h:h:h:h:h:h:h:h&gt;</list>
+                              </completionHelp>
+                            </properties>
+                            <command>sudo ${vyos_op_scripts_dir}/wireguard_client.py --name "$4" --interface "$6" --server "$8" --address "${10}" --address "${12}"</command>
+                          </tagNode>
+                        </children>
+                      </tagNode>
+                    </children>
                   </tagNode>
                 </children>
               </tagNode>
diff --git a/src/op_mode/wireguard_client.py b/src/op_mode/wireguard_client.py
index b25aac2c8..7a620a01e 100755
--- a/src/op_mode/wireguard_client.py
+++ b/src/op_mode/wireguard_client.py
@@ -20,6 +20,7 @@ import os
 from jinja2 import Template
 from ipaddress import ip_interface
 
+from vyos.ifconfig import Section
 from vyos.template import is_ipv4
 from vyos.template import is_ipv6
 from vyos.util import cmd
@@ -28,27 +29,47 @@ from vyos.util import popen
 if os.geteuid() != 0:
     exit("You need to have root privileges to run this script.\nPlease try again, this time using 'sudo'. Exiting.")
 
-tmpl = """
+server_config = """WireGuard client configuration for interface: {{ interface }}
+
+To enable this configuration on a VyOS router you can use the following commands:
+
+=== VyOS (server) configurtation ===
+
+{% for addr in address if address is defined %}
+set interfaces wireguard {{ interface }} peer {{ name }} allowed-ips '{{ addr }}'
+{% endfor %}
+set interfaces wireguard {{ interface }} peer {{ name }} pubkey '{{ pubkey }}'
+"""
+
+client_config = """
+=== RoadWarrior (client) configuration ===
+
 [Interface]
 PrivateKey = {{ privkey }}
 {% if address is defined and address|length > 0 %}
 Address = {{ address | join(', ')}}
 {% endif %}
+DNS = 1.1.1.1
 
 [Peer]
 PublicKey = {{ system_pubkey }}
 Endpoint = {{ server }}:{{ port }}
 AllowedIPs = 0.0.0.0/0, ::/0
+
 """
 
 if __name__ == '__main__':
     parser = argparse.ArgumentParser()
+    parser.add_argument("-n", "--name", type=str, help='WireGuard peer name', required=True)
     parser.add_argument("-i", "--interface", type=str, help='WireGuard interface the client is connecting to', required=True)
     parser.add_argument("-s", "--server", type=str, help='WireGuard server IPv4/IPv6 address or FQDN', required=True)
     parser.add_argument("-a", "--address", type=str, help='WireGuard client IPv4/IPv6 address', action='append')
     args = parser.parse_args()
 
     interface = args.interface
+    if interface not in Section.interfaces('wireguard'):
+        exit(f'WireGuard interface "{interface}" does not exist!')
+
     wg_pubkey = cmd(f'wg show {interface} | grep "public key"').split(':')[-1].lstrip()
     wg_port = cmd(f'wg show {interface} | grep "listening port"').split(':')[-1].lstrip()
 
@@ -58,6 +79,8 @@ if __name__ == '__main__':
     pubkey,_ = popen('wg pubkey', input=privkey)
 
     config = {
+        'name' : args.name,
+        'interface' : interface,
         'system_pubkey' : wg_pubkey,
         'privkey': privkey,
         'pubkey' : pubkey,
@@ -71,10 +94,12 @@ if __name__ == '__main__':
         v6_addr = 0
         for tmp in args.address:
             try:
-                config['address'].append(str(ip_interface(tmp)))
+                ip = str(ip_interface(tmp).ip)
                 if is_ipv4(tmp):
+                    config['address'].append(f'{ip}/32')
                     v4_addr += 1
                 elif is_ipv6(tmp):
+                    config['address'].append(f'{ip}/128')
                     v6_addr += 1
             except:
                 print(tmp)
@@ -83,10 +108,11 @@ if __name__ == '__main__':
         if (v4_addr > 1) or (v6_addr > 1):
             exit('Client can only have one IPv4 and one IPv6 address.')
 
-    tmp = Template(tmpl, trim_blocks=True).render(config)
-    qrcode,err = popen('qrencode -t ansiutf8', input=tmp)
-
-    print(f'\nWireGuard client configuration for interface: {interface}')
-    print(tmp)
-    print('\n')
+    # Clear out terminal first
+    print('\x1b[2J\x1b[H')
+    server = Template(server_config, trim_blocks=True).render(config)
+    print(server)
+    client = Template(client_config, trim_blocks=True).render(config)
+    print(client)
+    qrcode,err = popen('qrencode -t ansiutf8', input=client)
     print(qrcode)