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#!/bin/sh
set -e
base_dir="$HOME/.rapid-tunneling"
usage() {
me=`basename $0`
echo >&2 "$me: Initiate a Rapid-Tunneling tunnel."
echo >&2 "Usage:"
echo >&2 " $me [options] remote-access-NAME.tar.gz"
echo >&2 ""
echo >&2 "Options:"
echo >&2 " -c Copy tarball"
echo >&2 " -D Don't daemonize"
echo >&2 " -h HOST Connect to HOST rather the host from the tarball"
echo >&2 " -p PORT Connect to PORT rather the host from the tarball"
echo >&2 " -u USER Connect to USER rather the host from the tarball"
echo >&2 ""
}
if [ -z "$1" ]; then
usage
exit 1
fi
if [ -r /etc/rapid-tunneling/client ]; then . /etc/rapid-tunneling/client; fi
opt_copy='no'
opt_host=''
opt_port=''
opt_user=''
opt_daemonize='yes'
while getopts cdDh:p:u: opt; do
case "$opt" in
c) opt_copy='yes';;
D) opt_daemonize='no';;
d) opt_daemonize='yes';;
h) opt_host="$OPTARG";;
p) opt_port="$OPTARG";;
u) opt_user="$OPTARG";;
\?) usage; exit 1;;
esac
done
shift $((OPTIND - 1))
tarball="$1"
tmpdir=`mktemp -d rapid-tunneling.XXXXXX`
mkdir $tmpdir/recv $tmpdir/send
tar xzf "$tarball" -C $tmpdir/recv
[ "$opt_host" ] && host="$opt_host" || host=`cat $tmpdir/recv/host`
[ "$opt_port" ] && port="$opt_port" || port=`cat $tmpdir/recv/port`
[ "$opt_user" ] && user="$opt_user" || user=`cat $tmpdir/recv/user`
tunnelport=`cat $tmpdir/recv/tunnelport`
ssh-keygen -q -t rsa -C rapid-tunneling -N "" -f $tmpdir/send/key # public will be in key.pub
cp $tmpdir/recv/key $tmpdir/send/origkey
mkdir -p $base_dir
cp $tmpdir/recv/key $base_dir/key
tar czf $base_dir/ra-params.tar.gz -C $tmpdir/send key origkey
mkdir -p -m 700 $HOME/.ssh
awk '$NF != "rapid-tunneling" {print}' $HOME/.ssh/authorized_keys > $HOME/.ssh/authorized_keys.new 2>/dev/null || true
cat $tmpdir/send/key.pub >> $HOME/.ssh/authorized_keys.new
mv -f $HOME/.ssh/authorized_keys.new $HOME/.ssh/authorized_keys
chmod 644 $HOME/.ssh/authorized_keys
rm -rf $tmpdir
# Remove host key of $host (in case it has changed)
ssh-keygen -R $host 2>/dev/null || true
# Run in background
if [ -x /sbin/start-stop-daemon ]; then
SSD=/sbin/start-stop-daemon
else
SSD="/sbin/busybox start-stop-daemon"
fi
if [ "$opt_daemonize" = 'yes' ]; then
SSD_CMD="$SSD -S -b -m -p $base_dir/pid -x /bin/sh -- -c"
else
SSD_CMD="/bin/sh -c"
fi
if [ "$opt_copy" = 'yes' ]; then
cp "$tarball" "$base_dir/remote-access.tar.gz"
fi
$SSD_CMD "exec env SSH_AUTH_SOCK= ssh -o 'StrictHostKeyChecking no' -o 'BatchMode yes' -o 'ServerAliveInterval 60' -T -p $port -i $base_dir/key -R $tunnelport:127.0.0.1:22 -l $user $host < $base_dir/ra-params.tar.gz"
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