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executable file 98 lines (92 sloc) 3.71 KB
#!/usr/bin/env bash
function sshrc() {
local SSHHOME=${SSHHOME:=~}
if [ -f $SSHHOME/.sshrc ]; then
local files=.sshrc
if [ -d $SSHHOME/.sshrc.d ]; then
files="$files .sshrc.d"
fi
SIZE=$(tar cfz - -h -C $SSHHOME $files | wc -c)
if [ $SIZE -gt 65536 ]; then
echo >&2 $'.sshrc.d and .sshrc files must be less than 64kb\ncurrent size: '$SIZE' bytes'
exit 1
fi
if [ -z "$CMDARG" -a ! -e ~/.sshrc.d/.hushlogin ]; then
WELCOME_MSG="
if [ ! -e ~/.hushlogin ]; then
if [ -e /etc/motd ]; then cat /etc/motd; fi
if [ -e /etc/update-motd.d ]; then run-parts /etc/update-motd.d/ 2>/dev/null; fi
last -F \$USER 2>/dev/null | grep -v 'still logged in' | head -n1 | awk '{print \"Last login:\",\$4,\$5,\$6,\$7,\$8,\"from\",\$3;}'
fi
"
else
WELCOME_MSG=""
fi
ssh -t "$DOMAIN" $SSHARGS "
command -v openssl >/dev/null 2>&1 || { echo >&2 \"sshrc requires openssl to be installed on the server, but it's not. Aborting.\"; exit 1; }
$WELCOME_MSG
export SSHHOME=\$(mktemp -d -t .$(whoami).sshrc.XXXX)
export SSHRCCLEANUP=\$SSHHOME
trap \"rm -rf \$SSHRCCLEANUP; exit\" 0
echo $'"$(cat "$0" | openssl enc -base64)"' | tr -s ' ' $'\n' | openssl enc -base64 -d > \$SSHHOME/sshrc
chmod +x \$SSHHOME/sshrc
echo $'"$( cat << 'EOF' | openssl enc -base64
if [ -r /etc/profile ]; then source /etc/profile; fi
if [ -r ~/.bash_profile ]; then source ~/.bash_profile
elif [ -r ~/.bash_login ]; then source ~/.bash_login
elif [ -r ~/.profile ]; then source ~/.profile
fi
export PATH=$PATH:$SSHHOME
source $SSHHOME/.sshrc;
EOF
)"' | tr -s ' ' $'\n' | openssl enc -base64 -d > \$SSHHOME/sshrc.bashrc
echo $'"$( cat << 'EOF' | openssl enc -base64
#!/usr/bin/env bash
exec bash --rcfile <(echo '
[ -r /etc/profile ] && source /etc/profile
if [ -r ~/.bash_profile ]; then source ~/.bash_profile
elif [ -r ~/.bash_login ]; then source ~/.bash_login
elif [ -r ~/.profile ]; then source ~/.profile
fi
source '$SSHHOME'/.sshrc;
export PATH=$PATH:'$SSHHOME'
') "$@"
EOF
)"' | tr -s ' ' $'\n' | openssl enc -base64 -d > \$SSHHOME/bashsshrc
chmod +x \$SSHHOME/bashsshrc
echo $'"$(tar czf - -h -C $SSHHOME $files | openssl enc -base64)"' | tr -s ' ' $'\n' | openssl enc -base64 -d | tar mxzf - -C \$SSHHOME
export SSHHOME=\$SSHHOME
echo \"$CMDARG\" >> \$SSHHOME/sshrc.bashrc
bash --rcfile \$SSHHOME/sshrc.bashrc
"
else
echo "No such file: $SSHHOME/.sshrc" >&2
exit 1
fi
}
function sshrc_parse() {
while [[ -n $1 ]]; do
case $1 in
-b | -c | -D | -E | -e | -F | -I | -i | -L | -l | -m | -O | -o | -p | -Q | -R | -S | -W | -w )
SSHARGS="$SSHARGS $1 $2"; shift ;;
-* )
SSHARGS="$SSHARGS $1" ;;
*)
if [ -z "$DOMAIN" ]; then
DOMAIN="$1"
else
local SEMICOLON=$([[ "$@" = *[![:space:]]* ]] && echo '; ')
CMDARG="$@$SEMICOLON exit"
return;
fi
;;
esac
shift
done
if [ -z $DOMAIN ]; then
ssh $SSHARGS; exit 1;
fi
}
command -v openssl >/dev/null 2>&1 || { echo >&2 "sshrc requires openssl to be installed locally, but it's not. Aborting."; exit 1; }
sshrc_parse "$@"
sshrc
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