diff options
Diffstat (limited to 'src/etc/dhcp/dhclient-exit-hooks.d')
| -rwxr-xr-x[-rw-r--r--] | src/etc/dhcp/dhclient-exit-hooks.d/ipsec-dhclient-hook | 72 |
1 files changed, 57 insertions, 15 deletions
diff --git a/src/etc/dhcp/dhclient-exit-hooks.d/ipsec-dhclient-hook b/src/etc/dhcp/dhclient-exit-hooks.d/ipsec-dhclient-hook index 36edf04f3..a7a9a2ce6 100644..100755 --- a/src/etc/dhcp/dhclient-exit-hooks.d/ipsec-dhclient-hook +++ b/src/etc/dhcp/dhclient-exit-hooks.d/ipsec-dhclient-hook @@ -1,12 +1,44 @@ -#!/usr/bin/env python3 +#!/bin/bash +# +# Copyright (C) 2021 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 -import sys +if [ "$reason" == "REBOOT" ] || [ "$reason" == "EXPIRE" ]; then + exit 0 +fi + +DHCP_HOOK_IFLIST="/tmp/ipsec_dhcp_waiting" + +if [ -f $DHCP_HOOK_IFLIST ] && [ "$reason" == "BOUND" ]; then + if grep -qw $interface $DHCP_HOOK_IFLIST; then + sudo rm $DHCP_HOOK_IFLIST + sudo python3 /usr/libexec/vyos/conf_mode/vpn_ipsec.py + exit 0 + fi +fi + +if [ "$old_ip_address" == "$new_ip_address" ] && [ "$reason" == "BOUND" ]; then + exit 0 +fi +python3 - <<PYEND +import os +import re from vyos.util import call +from vyos.util import cmd -IPSEC_CONF="/etc/ipsec.conf" -IPSEC_SECRETS="/etc/ipsec.secrets" +SWANCTL_CONF="/etc/swanctl/swanctl.conf" def getlines(file): with open(file, 'r') as f: @@ -16,17 +48,25 @@ def writelines(file, lines): with open(file, 'w') as f: f.writelines(lines) +def ipsec_down(ip_address): + # This prevents the need to restart ipsec and kill all active connections, only the stale connection is closed + status = cmd('sudo ipsec statusall') + connection_name = None + for line in status.split("\n"): + if line.find(ip_address) > 0: + regex_match = re.search(r'(peer_[^:\[]+)', line) + if regex_match: + connection_name = regex_match[1] + break + if connection_name: + call(f'sudo ipsec down {connection_name}') + if __name__ == '__main__': interface = os.getenv('interface') new_ip = os.getenv('new_ip_address') old_ip = os.getenv('old_ip_address') - reason = os.getenv('reason') - - if (old_ip == new_ip and reason != 'BOUND') or reason in ['REBOOT', 'EXPIRE']: - sys.exit(0) - conf_lines = getlines(IPSEC_CONF) - secrets_lines = getlines(IPSEC_SECRETS) + conf_lines = getlines(SWANCTL_CONF) found = False to_match = f'# dhcp:{interface}' @@ -40,7 +80,9 @@ if __name__ == '__main__': secrets_lines[i] = line.replace(old_ip, new_ip) if found: - writelines(IPSEC_CONF, conf_lines) - writelines(IPSEC_SECRETS, secrets_lines) - call('sudo /usr/sbin/ipsec rereadall') - call('sudo /usr/sbin/ipsec reload') + writelines(SWANCTL_CONF, conf_lines) + ipsec_down(old_ip) + call('sudo ipsec rereadall') + call('sudo ipsec reload') + call('sudo swanctl -q') +PYEND
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