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authorViacheslav Hletenko <v.gletenko@vyos.io>2023-04-03 11:41:47 +0000
committerViacheslav Hletenko <v.gletenko@vyos.io>2023-04-03 11:41:47 +0000
commit1a1f425f869f94c7c7a9d57b71555e9e13796c9e (patch)
tree78b55e1dd9e46a62e5ebc4f990c0cbac7d7e77f1 /src/etc/dhcp/dhclient-exit-hooks.d/99-ipsec-dhclient-hook
parentb65296a0ff39e66d87e916971477cce351f6d5a5 (diff)
downloadvyos-1x-1a1f425f869f94c7c7a9d57b71555e9e13796c9e.tar.gz
vyos-1x-1a1f425f869f94c7c7a9d57b71555e9e13796c9e.zip
T5141: Add numbers for dhclient-exit-hooks.d to enforce order
Add numbers for all dhclient-exit-hooks.d to enforce script order execution Also, move '99-run-user-hooks' to '98-run-user-hooks' due to vyatta-dhclient-hook bug and exit with 'exit 1' it is described in the https://vyos.dev/T4856, so we should move this hook to the end. Rename 'vyatta-dhclient-hook' to '99-vyatta-dhclient-hook'
Diffstat (limited to 'src/etc/dhcp/dhclient-exit-hooks.d/99-ipsec-dhclient-hook')
-rwxr-xr-xsrc/etc/dhcp/dhclient-exit-hooks.d/99-ipsec-dhclient-hook86
1 files changed, 86 insertions, 0 deletions
diff --git a/src/etc/dhcp/dhclient-exit-hooks.d/99-ipsec-dhclient-hook b/src/etc/dhcp/dhclient-exit-hooks.d/99-ipsec-dhclient-hook
new file mode 100755
index 000000000..1f1926e17
--- /dev/null
+++ b/src/etc/dhcp/dhclient-exit-hooks.d/99-ipsec-dhclient-hook
@@ -0,0 +1,86 @@
+#!/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/>.
+
+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 $DHCP_HOOK_IFLIST
+ sudo /usr/libexec/vyos/conf_mode/vpn_ipsec.py
+ exit 0
+ fi
+fi
+
+if [ "$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
+from vyos.util import read_file
+from vyos.util import write_file
+
+SWANCTL_CONF="/etc/swanctl/swanctl.conf"
+
+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')
+
+ if os.path.exists(SWANCTL_CONF):
+ conf_lines = read_file(SWANCTL_CONF)
+ found = False
+ to_match = f'# dhcp:{interface}'
+
+ for i, line in enumerate(conf_lines):
+ if line.find(to_match) > 0:
+ conf_lines[i] = line.replace(old_ip, new_ip)
+ found = True
+
+ for i, line in enumerate(secrets_lines):
+ if line.find(to_match) > 0:
+ secrets_lines[i] = line.replace(old_ip, new_ip)
+
+ if found:
+ write_file(SWANCTL_CONF, conf_lines)
+ ipsec_down(old_ip)
+ call('sudo ipsec rereadall')
+ call('sudo ipsec reload')
+ call('sudo swanctl -q')
+
+ exit(0)
+PYEND \ No newline at end of file