summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rwxr-xr-xsrc/conf_mode/wireguard.py243
1 files changed, 243 insertions, 0 deletions
diff --git a/src/conf_mode/wireguard.py b/src/conf_mode/wireguard.py
new file mode 100755
index 000000000..7d52cfe94
--- /dev/null
+++ b/src/conf_mode/wireguard.py
@@ -0,0 +1,243 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2018 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 sys
+import os
+import re
+import syslog as sl
+import subprocess
+
+from vyos.config import Config
+from vyos import ConfigError
+
+dir = r'/config/auth/wireguard'
+pk = dir + '/private.key'
+pub = dir + '/public.key'
+
+### check_kmod may be removed in the future,
+### just want to have everything smoothly running after reboot
+def check_kmod():
+ if not os.path.exists('/sys/module/wireguard'):
+ sl.syslog(sl.LOG_NOTICE, "loading wirguard kmod")
+ if os.system('sudo modprobe wireguard') != 0:
+ sl.syslog(sl.LOG_NOTICE, "modprobe wireguard failed")
+ raise ConfigError("modprobe wireguard failed")
+
+def get_config():
+ config_data = {
+ 'interfaces' : {}
+ }
+
+ c = Config()
+ if not c.exists('interfaces wireguard'):
+ return None
+
+ c.set_level('interfaces')
+ intfcs = c.list_nodes('wireguard')
+ intfcs_eff = c.list_effective_nodes('wireguard')
+ new_lst = list( set(intfcs) - set(intfcs_eff) )
+ del_lst = list( set(intfcs_eff) - set(intfcs) )
+
+ ### setting deafult and determine status of the config
+ for intfc in intfcs:
+ cnf = 'wireguard ' + intfc
+ # default data struct
+ config_data['interfaces'].update (
+ {
+ intfc : {
+ 'addr' : '',
+ 'descr' : intfc, ## snmp ifAlias
+ 'lport' : '',
+ 'status' : 'exists',
+ 'state' : 'enabled',
+ 'mtu' : 1420,
+ 'peer' : {}
+ }
+ }
+ )
+
+ for i in new_lst:
+ config_data['interfaces'][i]['status'] = 'create'
+
+ for i in del_lst:
+ config_data['interfaces'].update (
+ {
+ i : {
+ 'status': 'delete'
+ }
+ }
+ )
+
+ ### based on the status, set real values
+ for intfc in intfcs:
+ cnf = 'wireguard ' + intfc
+ if config_data['interfaces'][intfc]['status'] != 'delete':
+ #### addresses
+ if c.exists(cnf + ' address'):
+ config_data['interfaces'][intfc]['addr'] = c.return_values(cnf + ' address')
+ ### listen port
+ if c.exists(cnf + ' listen-port'):
+ config_data['interfaces'][intfc]['lport'] = c.return_value(cnf + ' listen-port')
+ ### description
+ if c.exists(cnf + ' description'):
+ config_data['interfaces'][intfc]['descr'] = c.return_value(cnf + ' description')
+ ### mtu
+ if c.exists(cnf + ' mtu'):
+ config_data['interfaces'][intfc]['mtu'] = c.return_value(cnf + ' mtu')
+
+ ### peers
+ if c.exists(cnf + ' peer'):
+ for p in c.list_nodes(cnf + ' peer'):
+ config_data['interfaces'][intfc]['peer'].update (
+ {
+ p : {
+ 'allowed-ips' : [],
+ 'endpoint' : ''
+ }
+ }
+ )
+ if c.exists(cnf + ' peer ' + p + ' allowed-ips'):
+ config_data['interfaces'][intfc]['peer'][p]['allowed-ips'] = c.return_values(cnf + ' peer ' + p + ' allowed-ips')
+ if c.exists(cnf + ' peer ' + p + ' endpoint'):
+ config_data['interfaces'][intfc]['peer'][p]['endpoint'] = c.return_value(cnf + ' peer ' + p + ' endpoint')
+
+ #print (config_data)
+ return config_data
+
+def verify(c):
+ if not c:
+ return None
+
+ for i in c['interfaces']:
+ if c['interfaces'][i]['status'] != 'delete':
+ if not c['interfaces'][i]['addr']:
+ raise ConfigError("address required for interface " + i)
+ if not c['interfaces'][i]['lport']:
+ raise ConfigError("listen-port required for interface " + i)
+ if not c['interfaces'][i]['peer']:
+ raise ConfigError("peer required on interface " + i)
+ else:
+ for p in c['interfaces'][i]['peer']:
+ if not c['interfaces'][i]['peer'][p]['allowed-ips']:
+ raise ConfigError("allowed-ips required on interface " + i + " for peer " + p)
+ if not c['interfaces'][i]['peer'][p]['endpoint']:
+ raise ConfigError("endpoint required on interface " + i + " for peer " + p)
+
+ ### eventually check allowed-ips (if it's an ip and valid CIDR or so)
+ ### endpoint needs to be IP:port
+
+def apply(c):
+ ### no wg config left, delete all wireguard devices on the os
+ if not c:
+ net_devs = os.listdir('/sys/class/net/')
+ for dev in net_devs:
+ buf = open('/sys/class/net/' + dev + '/uevent','r').read()
+ if re.search("DEVTYPE=wireguard", buf, re.I|re.M):
+ wg_intf = re.sub("INTERFACE=","", re.search("INTERFACE=.*", buf, re.I|re.M).group(0) )
+ sl.syslog(sl.LOG_NOTICE, "removing interface " + wg_intf)
+ subprocess.call(['ip l d dev ' + wg_intf + ' >/dev/null'], shell=True)
+ return None
+
+ ###
+ ## to find the diffs between old config an new config
+ ## so we only configure/delete what was not previously configured
+ ###
+ c_eff = Config()
+ c_eff.set_level('interfaces wireguard')
+
+ ### deletion of specific interface
+ for intf in c['interfaces']:
+ if c['interfaces'][intf]['status'] == 'delete':
+ sl.syslog(sl.LOG_NOTICE, "removing interface " + intf)
+ subprocess.call(['ip l d dev ' + intf + ' &>/dev/null'], shell=True)
+
+ ### new config
+ if c['interfaces'][intf]['status'] == 'create':
+ if not os.path.exists(pk):
+ raise ConfigError("No keys found, generate them by executing: \'run generate wireguard keypair\'")
+
+ subprocess.call(['ip l a dev ' + intf + ' type wireguard 2>/dev/null'], shell=True)
+ for addr in c['interfaces'][intf]['addr']:
+ add_addr(intf, addr)
+ configure_interface(c,intf)
+ subprocess.call(['ip l set up dev ' + intf + ' &>/dev/null'], shell=True)
+
+ ### config updates
+ if c['interfaces'][intf]['status'] == 'exists':
+ ### IP address change
+ addr_eff = re.sub("\'", "", c_eff.return_effective_values(intf + ' address')).split()
+ addr_rem = list( set(addr_eff) - set(c['interfaces'][intf]['addr']) )
+ addr_add = list( set(c['interfaces'][intf]['addr']) - set(addr_eff) )
+
+ if len(addr_rem) !=0:
+ for addr in addr_rem:
+ del_addr(intf, addr)
+
+ if len(addr_add) !=0:
+ for addr in addr_add:
+ add_addr(intf, addr)
+
+ configure_interface(c,intf)
+
+ ### ifalias for snmp from description
+ descr_eff = c_eff.return_effective_value(intf + ' description')
+ cnf_descr = c['interfaces'][intf]['descr']
+ if descr_eff != cnf_descr:
+ open('/sys/class/net/' + str(intf) + '/ifalias','w').write(str(cnf_descr))
+
+def configure_interface(c, intf):
+ for p in c['interfaces'][intf]['peer']:
+ cmd = "wg set " + intf + \
+ " listen-port " + c['interfaces'][intf]['lport'] + \
+ " private-key " + pk + \
+ " peer " + p + \
+ " endpoint " + c['interfaces'][intf]['peer'][p]['endpoint']
+ cmd += " allowed-ips "
+ for ap in c['interfaces'][intf]['peer'][p]['allowed-ips']:
+ if ap != c['interfaces'][intf]['peer'][p]['allowed-ips'][-1]:
+ cmd += ap + ","
+ else:
+ cmd += ap
+ sl.syslog(sl.LOG_NOTICE, "sudo " + cmd)
+ subprocess.call([ 'sudo ' + cmd], shell=True)
+
+def add_addr(intf, addr):
+ ret = subprocess.call(['ip a a dev ' + intf + ' ' + addr + ' &>/dev/null'], shell=True)
+ if ret != 0:
+ raise ConfigError('Can\'t set IP ' + addr + ' on ' + intf )
+ else:
+ sl.syslog(sl.LOG_NOTICE, "ip a a dev " + intf + " " + addr)
+
+def del_addr(intf, addr):
+ ret = subprocess.call(['ip a d dev ' + intf + ' ' + addr + ' &>/dev/null'], shell=True)
+ if ret != 0:
+ raise ConfigError('Can\'t delete IP ' + addr + ' on ' + intf )
+ else:
+ sl.syslog(sl.LOG_NOTICE, "ip a d dev " + intf + " " + addr)
+
+if __name__ == '__main__':
+ try:
+ check_kmod()
+ c = get_config()
+ verify(c)
+ #generate(c)
+ apply(c)
+ except ConfigError as e:
+ print(e)
+ sys.exit(1)
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-14 00:39:47 +0000