sshrc

sshrc

#!/usr/bin/env bash

# Source: https://liam.sh/post/importing-bash-functions-over-ssh

sshrc() {
	local SSHHOME=${SSHHOME:=~}
	if [ ! -f $SSHHOME/.sshrc ]; then
		echo "No such file: $SSHHOME/.sshrc"
		exit 1
	fi

	local sshrcfile=.sshrc
	SIZE=$(tar cz -h -C $SSHHOME .sshrc | wc -c)
	if [ $SIZE -gt 65536 ]; then
		echo >&2 $'.sshrc must be less than 64kb\ncurrent size: '$SIZE' bytes'
		exit 1
	fi
	ssh -t "$@" "
        command -v xxd > /dev/null 2>&1 || { echo >&2 \"sshrc requires xxd to be installed on the server, but it's not. Aborting.\"; exit 1; }
        export SSHHOME=/tmp;echo $'"$(cat "$0" | xxd -p)"' | xxd -p -r > \$SSHHOME/sshrc;chmod +x \$SSHHOME/sshrc

        echo $'"$(
		cat <<'EOF' | xxd -p
if [ -e /etc/etc/profile ];then source /etc/profile;fi
if [ -e /etc/bashrc ];then source /etc/bashrc;fi
if [ -e /etc/bash.bashrc ];then source /etc/bash.bashrc;fi
if [ -e ~/.bashrc ];then source ~/.bashrc;fi
export PATH=$PATH:$SSHHOME;source $SSHHOME/.sshrc;
cat $SSHHOME/.sshrc | sed -rn "s:function ([a-zA-Z]+) .*:\1:p" | while read fnc;do export -f $fnc;done > /dev/null 2>&1
rm -f $SSHHOME/.post-sshrc $SSHHOME/.sshrc $SSHHOME/sshrc > /dev/null 2>&1 || echo "Unable to cleanup sshrc"
EOF
	)"' | xxd -p -r > \$SSHHOME/.post-sshrc
        echo $'"$(tar cz -h -C $SSHHOME .sshrc | xxd -p)"' | xxd -p -r | tar mxz -C \$SSHHOME
        export SSHHOME=\$SSHHOME;bash --rcfile \$SSHHOME/.post-sshrc
    "
}

if [ $1 ]; then
	command -v xxd >/dev/null 2>&1 || {
		echo >&2 "sshrc requires xxd to be installed locally, but it's not. Aborting."
		exit 1
	}
	sshrc $@
else ssh; fi