Shell helper to create the bundle crt file needed by nginx

createBundle.sh

#/bin/bash

if [ -z "$1" ]; then
        myyear=`date +'%Y'`
        echo "Please specifiy domain by calling e.g.: './createBundle.sh mydomain.com $myyear'"
        exit -4
fi

if [ -z "$2" ]; then
        myyear=`date +'%Y'`
        echo "Please specifiy year by calling e.g.: './createBundle.sh mydomain.com $myyear'"
        exit -4
fi

BUNDLE_FILE="bundle.$1.$2.crt"

KEY_FILE="$1.$2.key"
CRT_FILE="$1.$2.crt"
INT_FILE="AlphaSSL_Intermediate_CA.2016.pem"
GLO_FILE="GlobalSign_Root_R1_CA.2016.pem"

echo "Creating $BUNDLE_FILE"
echo "Testing if all files exist"
echo ""

if [ -e $BUNDLE_FILE ]; then
    echo "$BUNDLE_FILE already exists"
    exit -1
fi

if [ ! -f $KEY_FILE ]; then
    echo "$KEY_FILE not found"
    exit -2
fi

if [ ! -f $CRT_FILE ]; then
    echo "$CRT_FILE not found"
    exit -3
fi

echo "Cleaning files from linebreaks"
echo ""

# get rid of nasty linebreaks
dos2unix --newline *.crt
dos2unix --newline *.key
dos2unix --newline *.pem

# make sure each file ends with a newline
# otherwise concated bundle file is invalid
echo "" >> $CRT_FILE
echo "" >> $INT_FILE
echo "" >> $GLO_FILE

echo ""
echo "Now execute this to create the bundle file"
echo "cat $CRT_FILE $INT_FILE $GLO_FILE > $BUNDLE_FILE"
echo ""
echo "and alter 'ssl_certificate' and 'ssl_certificate_key' in your nginx config"