From 51f61991092a163f680e4ec8f122e73f4074ddf9 Mon Sep 17 00:00:00 2001
From: hagbard <vyosdev@derith.de>
Date: Tue, 11 Dec 2018 14:06:43 -0800
Subject: T1087: Firewall on Wireguard Interface implementation

---
 src/conf_mode/wireguard.py | 89 ++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 87 insertions(+), 2 deletions(-)

(limited to 'src/conf_mode')

diff --git a/src/conf_mode/wireguard.py b/src/conf_mode/wireguard.py
index f5452579e..c46cf7703 100755
--- a/src/conf_mode/wireguard.py
+++ b/src/conf_mode/wireguard.py
@@ -64,7 +64,17 @@ def get_config():
                 'status'      : 'exists',
                 'state'       : 'enabled',
                 'mtu'         : '1420',
-                'peer'        : {}
+                'peer'        : {},
+                'fw'          : {
+                    'in'      : None,
+                    'local'   : None,
+                    'out'     : None
+                },
+                'fwv6'          : {
+                    'in'      : None,
+                    'local'   : None,
+                    'out'     : None
+                }
             }
         }
     )
@@ -101,6 +111,21 @@ def get_config():
       ### mtu
       if c.exists(cnf + ' mtu'):
         config_data['interfaces'][intfc]['mtu'] = c.return_value(cnf + ' mtu')
+      ### firewall name
+      if c.exists(cnf + ' firewall in name'):
+        config_data['interfaces'][intfc]['fw']['in'] = c.return_value(cnf + ' firewall in name')
+      if c.exists(cnf + ' firewall local name'):
+        config_data['interfaces'][intfc]['fw']['local'] = c.return_value(cnf + ' firewall local name')
+      if c.exists(cnf + ' firewall out name'):
+        config_data['interfaces'][intfc]['fw']['out'] = c.return_value(cnf + ' firewall out name')
+
+      if c.exists(cnf + ' firewall in ipv6-name'):
+        config_data['interfaces'][intfc]['fwv6']['in'] = c.return_value(cnf + ' firewall in ipv6-name')
+      if c.exists(cnf + ' firewall local ipv6-name'):
+        config_data['interfaces'][intfc]['fwv6']['local'] = c.return_value(cnf + ' firewall local ipv6-name')
+      if c.exists(cnf + ' firewall out ipv6-name'):
+        config_data['interfaces'][intfc]['fwv6']['out'] = c.return_value(cnf + ' firewall out ipv6-name')
+
       ### peers
       if c.exists(cnf + ' peer'):
         for p in c.list_nodes(cnf + ' peer'):
@@ -123,7 +148,6 @@ def get_config():
             config_data['interfaces'][intfc]['peer'][p]['persistent-keepalive'] = c.return_value(cnf + ' peer ' + p + ' persistent-keepalive')
           if c.exists(cnf + ' peer ' + p + ' preshared-key'):
             config_data['interfaces'][intfc]['peer'][p]['psk'] = c.return_value(cnf + ' peer ' + p + ' preshared-key')
-  
 
   return config_data
 
@@ -267,6 +291,67 @@ def apply(c):
         with open('/sys/class/net/' + str(intf) + '/ifalias', 'w') as fh:
           fh.write(str(cnf_descr))
 
+    ### firewall v4
+    fw_eff_in = c_eff.return_effective_value(intf + ' firewall in name')
+    fw_eff_loc = c_eff.return_effective_value(intf + ' firewall local name')
+    fw_eff_out = c_eff.return_effective_value(intf + ' firewall out name')
+    
+    if fw_eff_in != c['interfaces'][intf]['fw']['in']:
+      if c['interfaces'][intf]['fw']['in'] == None:
+        update_firewall(intf, fw_eff_in, 'v4', 'delete', 'in')
+      else:
+        update_firewall(intf, c['interfaces'][intf]['fw']['in'], 'v4', 'update', 'in')
+
+    if fw_eff_loc != c['interfaces'][intf]['fw']['local']:
+      if c['interfaces'][intf]['fw']['local'] == None:
+        update_firewall(intf, fw_eff_loc, 'v4', 'delete', 'local')
+      else:
+        update_firewall(intf, c['interfaces'][intf]['fw']['local'], 'v4', 'update', 'local')
+
+    if fw_eff_out != c['interfaces'][intf]['fw']['out']:
+      if c['interfaces'][intf]['fw']['out'] == None:
+        update_firewall(intf, fw_eff_out, 'v4', 'delete', 'out')
+      else:
+        update_firewall(intf, c['interfaces'][intf]['fw']['out'], 'v4', 'update', 'out')
+
+    ### firewall v6
+    fwv6_eff_in = c_eff.return_effective_value(intf + ' firewall in ipv6-name')
+    fwv6_eff_loc = c_eff.return_effective_value(intf + ' firewall local ipv6-name')
+    fwv6_eff_out = c_eff.return_effective_value(intf + ' firewall out ipv6-name')
+
+    if fwv6_eff_in != c['interfaces'][intf]['fwv6']['in']:
+      if c['interfaces'][intf]['fwv6']['in'] == None:
+        update_firewall(intf, fwv6_eff_in, 'v6', 'delete', 'in')
+      else:
+        update_firewall(intf, c['interfaces'][intf]['fwv6']['in'], 'v6', 'update', 'in')
+
+    if fwv6_eff_loc != c['interfaces'][intf]['fwv6']['local']:
+      if c['interfaces'][intf]['fwv6']['local'] == None:
+        update_firewall(intf, fwv6_eff_loc, 'v6', 'delete', 'local')
+      else:
+        update_firewall(intf, c['interfaces'][intf]['fwv6']['local'], 'v6', 'update', 'local')
+
+    if fwv6_eff_out != c['interfaces'][intf]['fwv6']['out']:
+      if c['interfaces'][intf]['fwv6']['out'] == None:
+        update_firewall(intf, fwv6_eff_out, 'v6', 'delete', 'out')
+      else:
+        update_firewall(intf, c['interfaces'][intf]['fwv6']['out'], 'v6', 'update', 'out')
+
+  return 0
+
+
+def update_firewall(interf, fw_name, ver, action, table):
+  cmd = r'sudo /opt/vyatta/sbin/vyatta-firewall.pl --update-interfaces '
+  cmd += action + ' ' + interf + ' ' + table + ' ' + fw_name  
+  if ver == 'v4':
+    cmd += ' \"firewall name\"'
+  if ver == 'v6':
+    cmd += ' \"firewall ipv6-name\"'
+
+  sl.syslog(sl.LOG_NOTICE, "fw update executing: " + cmd)
+  subprocess.call([cmd], shell=True)
+  return 0
+
 def configure_interface(c, intf):
   for p in c['interfaces'][intf]['peer']:
     ## config init for wg call
-- 
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