#!/bin/bash
#
# useradd(8) wrapper for vservers
#
# Copyright (c) 2004  The Trustees of Princeton University (Trustees).
#
# $Id: vuseradd,v 1.3 2004/08/23 18:30:55 mlh-pl_kernel Exp $
#

: ${UTIL_VSERVER_VARS:=$(dirname $0)/util-vserver-vars}
test -e "$UTIL_VSERVER_VARS" || {
    echo "Can not find util-vserver installation; aborting..."
    exit 1
}
. "$UTIL_VSERVER_VARS"

usage()
{
    echo "usage: $0 name"
    exit 1
}

[ -z "$1" ] && usage
NAME=$1

# add user
useradd -s /bin/vsh $NAME

# change shell (in case user already exists)
usermod -s /bin/vsh $NAME

# automount keys (eval expands ~)
eval rm -rf ~$NAME/.ssh
eval ln -nsf /var/pl_sshd/keys/$NAME ~$NAME/.ssh

USERID=$(awk -F: "\$1 == \"$NAME\" { print \$3 }" < /etc/passwd)
GROUPID=$(awk -F: "\$1 == \"$NAME\" { print \$3 }" < /etc/passwd)

# create vserver configuration file
if [ ! -f /etc/vservers/$NAME.conf ] ; then
    sed -e "s/#S_CONTEXT=/S_CONTEXT=$USERID/" \
	< /etc/vservers/vserver-reference.conf \
	> /etc/vservers/$NAME.conf
fi

if [ ! -d "$VROOTDIR/$NAME" ] ; then
    # check the cache
    shopt -s nullglob
    for i in "$VROOTDIR/.vcache/"* ; do
	[ -d "$i" ] && mv "$i" "$VROOTDIR/$NAME" && break
    done
    # build vserver
    if [ ! -d "$VROOTDIR/$NAME" ] ; then
	# build image in .vtmp
	TMP=$(mktemp -d "$VROOTDIR/.vtmp/$NAME.XXXXXX")
	"$PKGLIBDIR/vbuild" "$VROOTDIR/vserver-reference" "$TMP"
	RETVAL=$?
	# move it to .vcache when complete
	if [ $RETVAL -eq 0 ] ; then
	    mv "$TMP" "$VROOTDIR/$NAME"
	else
	    echo "Error $RETVAL building $VROOTDIR/$NAME"
	    rm -rf "$TMP"
	    exit $RETVAL
	fi
    fi
fi

if [ -d "$VROOTDIR/$NAME" ] ; then
    # fix permissions
    chmod 755 "$VROOTDIR/$NAME"

    # add user in vserver
    vserver $NAME suexec root groupadd -g $GROUPID $NAME
    vserver $NAME suexec root useradd -u $USERID -g $GROUPID -p '' $NAME
fi