gistfile1.txt

function email {
        instance_profile=`curl -s http://169.254.169.254/latest/meta-data/iam/security-credentials/`

        AWS_ACCESS_KEY=`curl -s http://169.254.169.254/latest/meta-data/iam/security-credentials/${instance_profile} | grep AccessKeyId | cut -d':' -f2 | sed 's/[^0-9A-Z]*//g'`
        AWS_SECRET_KEY=`curl -s http://169.254.169.254/latest/meta-data/iam/security-credentials/${instance_profile} | grep SecretAccessKey | cut -d':' -f2 | sed 's/[^0-9A-Za-z/+=]*//g'`
        TOKEN=`curl -s http://169.254.169.254/latest/meta-data/iam/security-credentials/${instance_profile} | grep Token | cut -d':' -f2 | sed 's/[^0-9A-Za-z/+=]*//g'`

        TO="CHANGE@ME"
        FROM="CHANGE@ME"
        SUBJECT="CHANGE ME"
        MESSAGE="CHANGE ME"

        date="$(date -R)"
        priv_key="$AWS_SECRET_KEY"
        access_key="$AWS_ACCESS_KEY"
        signature="$(echo -n "$date" | openssl dgst -sha256 -hmac "$priv_key" -binary | base64 -w 0)"
        auth_header="X-Amzn-Authorization: AWS3-HTTPS AWSAccessKeyId=$access_key,Algorithm=HmacSHA256,Signature=$signature"
        token_header="X-Amz-Security-Token: $TOKEN"
        endpoint="https://email.us-east-1.amazonaws.com/"

        action="Action=SendEmail"
        source="Source=$FROM"
        to="Destination.ToAddresses.member.1=$TO"
        subject="Message.Subject.Data=$SUBJECT"
        message="Message.Body.Text.Data=$MESSAGE"

        curl -s -X POST -H "Date: $date" -H "$auth_header" -H "$token_header" --data-urlencode "$message" --data-urlencode "$to" --data-urlencode "$source" --data-urlencode "$action" --data-urlencode "$subject"  "$endpoint" > /dev/null
}