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#!/bin/sh
# This script can be used as a "remote shell" command that is only
# capable of pretending to connect to "localhost". This is useful
# for testing or for running a local copy where the sender and the
# receiver needs to use different options (e.g. --fake-super). If
# we get a -l USER option, we try to use "sudo -u USER" to run the
# command. Supports only the hostnames "localhost" and "lh", with
# the latter implying the --no-cd option.
user=''
do_cd=y # Default path is user's home dir (just like ssh) unless host is "lh".
while : ; do
case "$1" in
-l) user="$2"; shift; shift ;;
-l*) user=`echo "$1" | sed 's/^-l//'`; shift ;;
--no-cd) do_cd=n; shift ;;
-*) shift ;;
localhost) shift; break ;;
lh) do_cd=n; shift; break ;;
*) echo "lsh: unable to connect to host $1" 1>&2; exit 1 ;;
esac
done
if [ "$user" ]; then
prefix=''
if [ $do_cd = y ]; then
home=`perl -e "print((getpwnam('$user'))[7])"`
prefix="cd '$home' &&"
fi
sudo -H -u "$user" sh -c "$prefix $*"
else
if [ $do_cd = y ]; then
cd || exit 1
fi
eval "${@}"
fi
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