ShadowArch/Shared/ssh-authorize-host

#!/bin/bash

#--------------------------------------------------------------------#
#File: ssh-authorize-host
#
#Description: Add a public key to a remote SSH-capable host.
#
#Package: AniNIX::MiscScripts
#Copyright: WTFPL
#
#Author: DarkFeather
#Changelog by editor:
#--------------------------------------------------------------------#


# Show the usage for this script.
function usage {
    echo "Usage: $0 host [ pubkeyfile ]"
}

# Create the initial SSH command.
function initialSSHCommand() {
    echo 'mkdir -p ${HOME}/.ssh'
    echo 'touch ${HOME}/.ssh/authorized_keys'
    echo 'chmod 0700 ${HOME} ${HOME}/.ssh'
    echo 'chmod 0600 ${HOME}/.ssh/authorized_keys'
    echo 'chown -R `whoami`":" ${HOME}'
    echo 'cat >> ${HOME}/.ssh/authorized_keys'
}


# Parse the CLI arguments.
host="$1"
if [ -z "$host" ]; then usage; exit 1; fi
pubkeyfile="$2"
if [ -z "$pubkeyfile" ] || [ ! -f "$pubkeyfile" ]; then
    pubkeyfile="${HOME}/.ssh/id_rsa.pub"
fi

# Execute on the remote host.
(initialSSHCommand; cat "$pubkeyfile") | ssh "$host" /bin/bash