path: root/xsh

#!/bin/bash

SCRIPT=$(basename $0)

function usage () {
    echo "Usage: $SCRIPT [--x] [--verbose] [[--su |{user}@]{host}]"
}

function termwrapper () {
    PRG=$@
    title="$title $titleopt"
    [ "$V" = 1 ] && echo $PRG

#   case `readlink /etc/alternatives/x-terminal-emulator | xargs basename` in
#       rxvt*)
#       opts="+sb -sl 500 -n \"$title\" -title \"$title\""
#       ;;
#   esac

    if [ -n "$PRG" ]; then
#       rxvt +sb -sl 500 -n "$title" -title "$title" -e $PRG &
#       exec rxvt +sb -sl 500 -n "$title" -title "$title" -e $PRG
        x-terminal-emulator +sb -sl 500 -n "$title" -title "$title" -e $PRG &
#       x-terminal-emulator $opts -e $PRG &
    else
#       rxvt +sb -sl 500 -n "$title" -title "$title" &
#       exec rxvt +sb -sl 500 -n "$title" -title "$title"
        x-terminal-emulator +sb -sl 500 -n "$title" -title "$title" &
#       x-terminal-emulator $opts &
    fi
}

# Initial setup
SU=''
X=''
V=''
SUHACK=''
HOST=''
USER=''
ssh_opts="-t"

args=''
while [ $# -gt 0 ]; do
    case $1 in
        -su|su)     SU=1;;
                # Become root indirectly through a regular user (same as local user if -u not used)
        -suu|suu)   SU=1; SUU=1;;
                # Remote user allowed to switch to root
        --user|-u)  USER=$2; shift;;
        --x|-x|x)   X=1; ssh_opts="$ssh_opts -X";;
        --ssh2|-2)  ssh_opts="$ssh_opts -2";;
        --verbose|-v)   V=1; ssh_opts="$ssh_opts -v";;
        --port|-p)  ssh_opts="$ssh_opts -p $2"; shift;;
        --host|-h)  HOST=$1;;
        -)      HOST="localhost";;
        -*)     usage; exit 1;;
        root@*)     HOST="$1"; SU=1; SUHACK=1;;
        *)      args="$args$1 ";;
    esac
    shift
done
set -- $args

# get hostname unless already given or not there
if [ -z "$HOST" ]; then
    if [ $# -gt 1 ]; then
        HOST=$1
        shift
    else
        HOST="localhost"
    fi
fi
if [ -z "$HOST" ]; then
    usage
    exit 1
fi

# Split program name from its options
if [ $# -gt 0 ]; then
    prg_base=$1
    shift
    prg_opts=$@
fi

if [ "$X" = 1 -a "$SU" = 1 -a "$SUHACK" != 1 ]; then
    args="root@$args"
    SUHACK=1
fi

titleopt="[$HOST]"
if [ $HOST != "localhost" ]; then
    ssh_opts="-C $ssh_opts"
fi

# Pause for a moment if verbose
if [ "$V" = 1 ]; then
    prg_opts="$prg_opts; sleep 4"
fi

## Don't open 2 shells if no program is run - Disabled for now (something wrong with the test...)
#if [ -z "$prg_base" -a -z "$prg_opts" -a "$SUU" != 1 ]; then
#   title="$SCRIPT"
#       prg_local=''
#       prg_remote=''
#else
    if [ -z "$prg_base" ]; then
        title="$SCRIPT"
        prg_base='/bin/bash'
    else
        title="$prg_base"
        prg_opts_local="$prg_opts"
        prg_opts_remote="$prg_opts"
    fi
    
    # Special cases for specific programs
    case $prg_base in
            # Midnight Commander has an option for slow connections
        mc) prg_opts_remote="-s -c $prg_opts_remote";;
    esac
    
    prg_local="$prg_base $prg_opts_local"
    prg_remote="bash --login -i -c \"test -e /etc/debian_version || export TERM=xterm; $prg_base $prg_opts_remote\""
    prg_remote_suu="echo -n 'Changing to root...: '; su $su_opts -c \"cd; $prg_base $prg_opts_remote\""
#fi

if [ "$SU" != 1 ]; then
    if [ $HOST = "localhost" ]; then
        termwrapper $prg_local
    else
        termwrapper ssh $ssh_opts $HOST $prg_remote
    fi
else
    if [ "$SUHACK" = 1 ]; then
#       termwrapper ssh $ssh_opts $HOST su $su_opts -c \"$prg_remote\"
        termwrapper ssh $ssh_opts $HOST $prg_remote
    else
        titleopt="[$HOST root]"
        if [ "$SUU" = 1 ]; then
            if [ -z "$USER" ]; then
                termwrapper ssh $ssh_opts $HOST $prg_remote_suu
            else
                termwrapper ssh $ssh_opts $USER@$HOST $prg_remote_suu
            fi
        else
            if [ $HOST = "localhost" ]; then
                termwrapper ssh $ssh_opts root@$HOST bash --login -i -c \"$prg_local\"
            else
                termwrapper ssh $ssh_opts root@$HOST $prg_remote
            fi
        fi
    fi
fi