ssh-vnc

#!/bin/bash

INFO="
Start vncserver on a remote host, set up ssh tunneling,
and connect to the session using vncviewer.

Usage:
    ssh-vnc <ssh options>
"

if [ "x$1" = x ]; then
    echo "$INFO" 1>&2
    exit 1
fi

SIZE=$(xinfo r) || exit 1
SIZE=$((${SIZE%% *}-50))x$((${SIZE##* }-100)) || exit 1

TMPDIR=$(mktemp -d) || exit 1
trap "rm -rf $TMPDIR" EXIT

ECHO_PASSWD="echo -n $'\x49\x40\x15\xf9\xa3\x5e\x8b\x22'"
bash -c "$ECHO_PASSWD" > "$TMPDIR/passwd"

REMOTE_CMD="
cd || exit 1
mkdir -p .vnc || exit 1
$ECHO_PASSWD > .vnc/passwd || exit 1
chmod 0600 .vnc/passwd || exit 1
vncserver -list | grep '^:' | cut -f 1 | xargs -n1 vncserver -kill
echo Starting VNC server on remote host...
vncserver -geometry '$SIZE' -depth 24 \
    -alwaysshared -dpi 96 -localhost :1 </dev/null || exit 1
echo Started
sleep 3600
"

ssh "$@" -L 6900:localhost:5901 "$REMOTE_CMD" 2>&1 | while read line; do
    if [ "x$line" = xStarted ]; then
        vncviewer 127.0.0.1:6900 -passwd "$TMPDIR/passwd"
        exit 0
    elif [ "x$line" != x ]; then
        echo "$line"
    fi
done