Create a script to handle client revocation

This script revoke the certificate corresponding to the commonName passed as first parameter, generate a new CRL, copies it to /etc/openvpn, make it readable by OpenVPN and optionally remove the crt, key and req file corresponding to the revoked certificate using "remove" as second parameter (removal of those files are required to generate a new client certificate using the revoked certificate's CN).

Author: buchdag

bin/ovpn_revokeclient

@@ -0,0 +1,61 @@
+#!/bin/bash
+
+#
+# Revoke a client certificate
+#
+
+if [ "$DEBUG" == "1" ]; then
+    set -x
+fi
+
+set -e
+
+if [ -z "$OPENVPN" ]; then
+    export OPENVPN="$PWD"
+fi
+if ! source "$OPENVPN/ovpn_env.sh"; then
+    echo "Could not source $OPENVPN/ovpn_env.sh."
+    exit 1
+fi
+if [ -z "$EASYRSA_PKI" ]; then
+    export EASYRSA_PKI="$OPENVPN/pki"
+fi
+
+cn="$1"
+parm="$2"
+
+if [ ! -f "$EASYRSA_PKI/private/${cn}.key" ]; then
+    echo "Unable to find \"${cn}\", please try again or generate the key first" >&2
+    exit 1
+fi
+
+revoke_client_certificate(){
+    easyrsa revoke "$1"
+    echo "Generating the Certificate Revocation List :"
+    easyrsa gen-crl
+    cp -f "$EASYRSA_PKI/crl.pem" "$OPENVPN/crl.pem"
+    chmod 644 "$OPENVPN/crl.pem"
+}
+
+remove_files(){
+    rm -v "$EASYRSA_PKI/issued/${1}.crt"
+    rm -v "$EASYRSA_PKI/private/${1}.key"
+    rm -v "$EASYRSA_PKI/reqs/${1}.req"
+}
+
+case "$parm" in
+    "remove")
+        revoke_client_certificate "$cn"
+        remove_files "$cn"
+        ;;
+    "" | "keep")
+        revoke_client_certificate "$cn"
+        ;;
+    *)
+        echo "When revoking a client certificate, this script let you choose if you want to remove the corresponding crt, key and req files." >&2
+        echo "Pease note that the removal of those files is required if you want to generate a new client certificate using the revoked certificate's CN." >&2
+        echo "    1. keep (default): Keep the files." >&2
+        echo "    2. remove: Remove the files." >&2
+        echo "Please specify one of those options as second parameter." >&2
+        ;;
+esac