Helper script for generating push notification certificates based on tutorial: http://www.raywenderlich.com/32960/apple-push-notification-services-in-ios-6-tutorial-part-1

generate.sh

#!/bin/sh

# Helper script for generating push notification certificates based on tutorial:
# http://www.raywenderlich.com/32960/apple-push-notification-services-in-ios-6-tutorial-part-1

function show_help_and_exit
{
    echo "usage:" $0 \<certificate output\> \<private key output\> \<combined output\>
    echo
    echo "Input files are not specified, they are supposed to have"
    echo "standard names: aps_development.cer and Certificates.p12."
    echo
    echo "    example:" $0 MyCertificate.pem MyPrivateKey.pem MyCombined.pem
    echo
    exit
}

if [ "$1" != "" ]; then
    openssl x509 -in aps_development.cer -inform der -out $1
else
    show_help_and_exit
fi

if [ "$2" != "" ]; then
    openssl pkcs12 -nocerts -out $2 -in Certificates.p12
else
    show_help_and_exit
fi

if [ "$3" != "" ]; then
    cat $1 $2 > $3
else
    show_help_and_exit
fi

echo "Now test connection with command:"
echo
echo "    openssl s_client -connect gateway.sandbox.push.apple.com:2195 -cert $1 -key $2"
echo