aws_firstboot

#!/bin/sh

# KEYWORD: firstboot
# PROVIDE: aws_firstboot
# REQUIRE: NETWORKING
# BEFORE: LOGIN

: ${user=devops}

. /etc/rc.subr

name=aws_firstboot
rcvar=aws_firstboot_enable
start_cmd="${name}_run"

SSHKEYURL="http://169.254.169.254/1.0/meta-data/public-keys/0/openssh-key"

aws_firstboot_run()
{
        eval SSHKEYFILE="~${user}/.ssh/authorized_keys"

        echo "Fetching SSH public key AWS"
        mkdir -p `dirname ${SSHKEYFILE}`
        chmod 700 `dirname ${SSHKEYFILE}`
        chown ${user} `dirname ${SSHKEYFILE}`
        ftp -q 5 -o ${SSHKEYFILE}.ec2 -a ${SSHKEYURL} >/dev/null
        if [ -f ${SSHKEYFILE}.ec2 ]; then
                touch ${SSHKEYFILE}
                sort -u ${SSHKEYFILE} ${SSHKEYFILE}.ec2         \
                    > ${SSHKEYFILE}.tmp
                mv ${SSHKEYFILE}.tmp ${SSHKEYFILE}
                chown ${user} ${SSHKEYFILE}
                rm ${SSHKEYFILE}.ec2
        else
                echo "Fetching SSH public key failed!"
        fi
}

load_rc_config $name
run_rc_command "$1"