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Diffstat (limited to 'src/etc/dhcp/dhclient-exit-hooks.d/ipsec-dhclient-hook.py')
-rw-r--r--src/etc/dhcp/dhclient-exit-hooks.d/ipsec-dhclient-hook.py46
1 files changed, 46 insertions, 0 deletions
diff --git a/src/etc/dhcp/dhclient-exit-hooks.d/ipsec-dhclient-hook.py b/src/etc/dhcp/dhclient-exit-hooks.d/ipsec-dhclient-hook.py
new file mode 100644
index 000000000..36edf04f3
--- /dev/null
+++ b/src/etc/dhcp/dhclient-exit-hooks.d/ipsec-dhclient-hook.py
@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+
+from vyos.util import call
+
+IPSEC_CONF="/etc/ipsec.conf"
+IPSEC_SECRETS="/etc/ipsec.secrets"
+
+def getlines(file):
+ with open(file, 'r') as f:
+ return f.readlines()
+
+def writelines(file, lines):
+ with open(file, 'w') as f:
+ f.writelines(lines)
+
+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)
+ 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:
+ writelines(IPSEC_CONF, conf_lines)
+ writelines(IPSEC_SECRETS, secrets_lines)
+ call('sudo /usr/sbin/ipsec rereadall')
+ call('sudo /usr/sbin/ipsec reload')