export openvpn config (with certificates) from NetworkManager

nm-export-ovpn.sh

#!/bin/bash
# v.202311301520

# gen vpn connections menu
unset options i
while IFS= read -r  f; do
  options[i++]="$f"
done < <(nmcli --fields TYPE,NAME  connection show  | grep vpn |  awk '{for (i=2; i<NF; i++) printf $i " "; print $NF}' )

select opt in "${options[@]}" ; do
  case $opt in
    *)
      NMCONN=$opt
      break
      ;;
  esac
done

#  doublecheck
if !  nmcli connection export "$NMCONN" > /dev/null 2>1; then
    echo "ERROR. Export error."
    exit 1
fi

CONF=$(nmcli connection export "$NMCONN")


EMBEDINGS=(cert key ca tls-crypt tls-auth)
# save all certs to tmp file
TMPF=mktemp
for x in ${EMBEDINGS[*]}; do
    if echo "$CONF" | grep "^$x " > /dev/null 2>1 ; then
        file=$(realpath $(echo "$CONF"| grep ^$x| cut -d " " -f 2 | sed  "s/'//g") )
        if [ -e $file ]; then
            echo "<$x>" >> $TMPF
            cat "$file" >> $TMPF
            echo "</$x>" >> $TMPF
        fi
    fi
    grepstr="${grepstr}^$x |"
done

echo
# remove lines with files from config
echo "$CONF"| grep -vE  "${grepstr::-1}"
# add saved certs
cat $TMPF

rm -f $TMPF