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FSI/conf/ocsp-verify.sh
2026-04-22 00:19:36 +01:00

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#!/bin/bash
# OpenVPN passes cert depth as $1
depth=$1
# Only check client certificate (depth 0)
env >> /etc/openvpn/server/ocsp_env.log
if [ "$depth" -eq 0 ]; then
echo "Checking OCSP for serial=$tls_serial_0" >> /etc/openvpn/server/ocsp.log
if [ -n "$tls_serial_0" ]; then
# OpenVPN exports tls_serial_0 as decimal, OpenSSL expects hex
hex_serial=$(printf '%x' "$tls_serial_0")
status=$(openssl ocsp -issuer /etc/openvpn/server/ca.crt -serial "0x$hex_serial" -url http://10.60.0.1:8888 -CAfile /etc/openvpn/server/ca.crt 2>>/etc/openvpn/server/ocsp.log)
echo "OCSP Status: $status" >> /etc/openvpn/server/ocsp.log
if echo "$status" | grep -q "revoked"; then
echo "Result: REVOKED" >> /etc/openvpn/server/ocsp.log
exit 1
fi
if echo "$status" | grep -q "good"; then
echo "Result: GOOD" >> /etc/openvpn/server/ocsp.log
exit 0
fi
echo "Result: UNKNOWN/ERROR" >> /etc/openvpn/server/ocsp.log
exit 1
else
echo "tls_serial_0 is empty!" >> /etc/openvpn/server/ocsp.log
exit 1
fi
fi
exit 0