openvpn/easy-rsa/2.0/inherit-inter

   1 #!/bin/bash
   2
   3 # Build a new PKI which is rooted on an intermediate certificate generated
   4 # by ./build-inter or ./pkitool --inter from a parent PKI.  The new PKI should
   5 # have independent vars settings, and must use a different KEY_DIR directory
   6 # from the parent.  This tool can be used to generate arbitrary depth
   7 # certificate chains.
   8 #
   9 # To build an intermediate CA, follow the same steps for a regular PKI but
  10 # replace ./build-key or ./pkitool --initca with this script.
  11
  12 # The EXPORT_CA file will contain the CA certificate chain and should be
  13 # referenced by the OpenVPN "ca" directive in config files.  The ca.crt file
  14 # will only contain the local intermediate CA -- it's needed by the easy-rsa
  15 # scripts but not by OpenVPN directly.
  16 EXPORT_CA="export-ca.crt"
  17
  18 if [ $# -ne 2 ]; then
  19     echo "usage: $0 <parent-key-dir> <common-name>"
  20     echo "parent-key-dir: the KEY_DIR directory of the parent PKI"
  21     echo "common-name: the common name of the intermediate certificate in the parent PKI"
  22     exit 1;
  23 fi
  24
  25 if [ "$KEY_DIR" ]; then
  26     cp "$1/$2.crt" "$KEY_DIR/ca.crt"
  27     cp "$1/$2.key" "$KEY_DIR/ca.key"
  28
  29     if [ -e "$1/$EXPORT_CA" ]; then
  30         PARENT_CA="$1/$EXPORT_CA"
  31     else
  32         PARENT_CA="$1/ca.crt"
  33     fi
  34     cp "$PARENT_CA" "$KEY_DIR/$EXPORT_CA"
  35     cat "$KEY_DIR/ca.crt" >> "$KEY_DIR/$EXPORT_CA"
  36 else
  37     echo 'Please source the vars script first (i.e. "source ./vars")'
  38     echo 'Make sure you have edited it to reflect your configuration.'
  39 fi