#!/bin/sh
#
# Copyright (C) 2006-2010 Oracle Corporation
#
# This file is part of VirtualBox Open Source Edition (OSE), as
# available from http://www.virtualbox.org. This file is free software;
# you can redistribute it and/or modify it under the terms of the GNU
# General Public License as published by the Free Software Foundation,
# in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
# distribution. VirtualBox OSE is distributed in the hope that it will
# be useful, but WITHOUT ANY WARRANTY of any kind.
#

# we can be called with the following arguments (6.5 of Debian policy):
#  configure:         (our version): installing/configuring new version
#  abort-upgrade:     (old version): upgrading to a new version failed
#  abort-remove:      (our version): removing this package failed
#  abort-deconfigure: (our version): error during resolving conflicts

LOG="/var/log/vbox-install.log"

# defaults
[ -r /etc/default/virtualbox ] && . /etc/default/virtualbox

if [ "$1" = "configure" ]; then

  # for debconf
  . /usr/share/debconf/confmodule
  db_version 2.0

  # remove old cruft
  if [ -f /etc/init.d/vboxdrv.sh ]; then
    echo "Found old version of /etc/init.d/vboxdrv.sh, removing."
    rm /etc/init.d/vboxdrv.sh
    update-rc.d vboxdrv.sh remove >/dev/null
  fi
  if [ -f /etc/vbox/vbox.cfg ]; then
    echo "Found old version of /etc/vbox/vbox.cfg, removing."
    rm /etc/vbox/vbox.cfg
  fi

  # install udev rule (disable with INSTALL_NO_UDEV=1 in /etc/default/virtualbox)
  if [ -d /etc/udev/rules.d -a "$INSTALL_NO_UDEV" != "1" ]; then
    udev_call=""
    udev_app=`which udevadm 2> /dev/null`
    if [ $? -eq 0 ]; then
      udev_call="${udev_app} version 2> /dev/null"
    else
      udev_app=`which udevinfo 2> /dev/null`
      if [ $? -eq 0 ]; then
        udev_call="${udev_app} -V 2> /dev/null"
      fi
    fi
    udev_fix="="
    if [ "${udev_call}" != "" ]; then
      udev_out=`${udev_call}`
      udev_ver=`expr "$udev_out" : '[^0-9]*\([0-9]*\)'`
      if [ "$udev_ver" = "" -o "$udev_ver" -lt 55 ]; then
        udev_fix=""
      fi
    fi
    echo "KERNEL=${udev_fix}\"vboxdrv\", NAME=\"vboxdrv\", OWNER=\"root\", GROUP=\"root\", MODE=\"0600\"" \
      > /etc/udev/rules.d/10-vboxdrv.rules
    if [ "$INSTALL_NO_GROUP" != "1" ]; then
        usb_group=vboxusers
    else
        usb_group=root
    fi
    usb_createnode="/usr/share/virtualbox/VBoxCreateUSBNode.sh"
    echo "SUBSYSTEM=${udev_fix}\"usb_device\", ACTION=${udev_fix}\"add\", RUN=${usb_createnode} \$major \$minor \$attr{bDeviceClass}\"" ${usb_group} \
        >> /etc/udev/rules.d/10-vboxdrv.rules
    echo "SUBSYSTEM=${udev_fix}\"usb\", ACTION=${udev_fix}\"add\", ENV{DEVTYPE}==\"usb_device\", RUN=${usb_createnode} \$major \$minor \$attr{bDeviceClass}\"" ${usb_group} \
        >> /etc/udev/rules.d/10-vboxdrv.rules
    echo "SUBSYSTEM=${udev_fix}\"usb_device\", ACTION=${udev_fix}\"remove\", RUN=${usb_createnode} --remove \$major \$minor\"" \
        >> /etc/udev/rules.d/10-vboxdrv.rules
    echo "SUBSYSTEM=${udev_fix}\"usb\", ACTION=${udev_fix}\"remove\", ENV{DEVTYPE}==\"usb_device\", RUN=${usb_createnode} --remove \$major \$minor\"" \
        >> /etc/udev/rules.d/10-vboxdrv.rules
  fi
  # Remove old udev description file
  if [ -f /etc/udev/rules.d/60-vboxdrv.rules ]; then
      rm -f /etc/udev/rules.d/60-vboxdrv.rules 2> /dev/null
  fi
  # Build our device tree
  for i in /sys/bus/usb/devices/*; do
    if test -r "$i/dev"; then
      dev="`cat "$i/dev" 2> /dev/null`"
      major="`expr "$dev" : '\(.*\):' 2> /dev/null`"
      minor="`expr "$dev" : '.*:\(.*\)' 2> /dev/null`"
      class="`cat $i/bDeviceClass 2> /dev/null`"
      sh ${usb_createnode} "$major" "$minor" "$class" ${usb_group} 2>/dev/null
    fi
  done

  # create users groups (disable with INSTALL_NO_GROUP=1 in /etc/default/virtualbox)
  if [ "$INSTALL_NO_GROUP" != "1" ]; then
    db_input low virtualbox/group-vboxusers || true
    db_go || true
    addgroup --system vboxusers || true
  fi

  # The starters need to be Suid root. They drop the privileges before starting
  # the real frontend.
  if ! dpkg-statoverride --list /usr/lib/virtualbox/VirtualBox > /dev/null 2>&1; then
    chmod 4511 /usr/lib/virtualbox/VirtualBox
  fi
  if ! dpkg-statoverride --list /usr/lib/virtualbox/VBoxHeadless > /dev/null 2>&1; then
    chmod 4511 /usr/lib/virtualbox/VBoxHeadless
  fi
  if ! dpkg-statoverride --list /usr/lib/virtualbox/VBoxSDL > /dev/null 2>&1; then
    chmod 4511 /usr/lib/virtualbox/VBoxSDL
  fi
  if ! dpkg-statoverride --list /usr/lib/virtualbox/VBoxNetDHCP > /dev/null 2>&1; then
    chmod 4511 /usr/lib/virtualbox/VBoxNetDHCP
  fi
  if ! dpkg-statoverride --list /usr/lib/virtualbox/VBoxNetAdpCtl > /dev/null 2>&1; then
    chmod 4511 /usr/lib/virtualbox/VBoxNetAdpCtl
  fi
  if ! dpkg-statoverride --list /usr/lib/virtualbox/VBoxExtPackHelperApp > /dev/null 2>&1; then
    chmod 4511 /usr/lib/virtualbox/VBoxExtPackHelperApp
  fi

  # if INSTALL_NO_VBOXDRV is set to 1, remove all shipped modules
  if [ "$INSTALL_NO_VBOXDRV" = "1" ]; then
    rm -f /lib/modules/*/misc/vboxdrv.ko
    rm -f /lib/modules/*/misc/vboxnetflt.ko
    rm -f /lib/modules/*/misc/vboxnetadp.ko
  fi

fi # $1 = "configure"

#DEBHELPER#

if [ "$1" = "configure" ]; then
  # Start vboxdrv/vboxweb-service manually as we use our own error handling in postrm
  if [ -x "/etc/init.d/vboxdrv" ]; then
    update-rc.d vboxdrv defaults >/dev/null

    BUILD_MODULES=0
    REGISTER_MODULES=1
    # Disable module compilation with INSTALL_NO_VBOXDRV=1 in /etc/default/virtualbox
    if [ ! -f /lib/modules/`uname -r`/misc/vboxdrv.ko ]; then
      REGISTER_MODULES=0
      if [ "$INSTALL_NO_VBOXDRV" != "1" ]; then
        db_get virtualbox/module-compilation-allowed
        if [ "$RET" = "false" ]; then
          cat << EOF
Unable to find a precompiled module for the current kernel
though module compilation denied by debconf setting.
EOF
        else
          db_input low virtualbox/module-compilation-allowed || true
          db_go || true
          db_get virtualbox/module-compilation-allowed
          if [ "$RET" = "true" ]; then
            BUILD_MODULES=1
          fi
        fi
      fi
    fi

    if [ $BUILD_MODULES -eq 1 ]; then
      if [ -x "`which invoke-rc.d 2>/dev/null`" ]; then
        invoke-rc.d vboxdrv setup || true
      else
        /etc/init.d/vboxdrv setup || true
      fi
    else
      # shipped modules found, register sources at DKMS anyway
      if lsmod | grep -q "vboxdrv[^_-]"; then
        /etc/init.d/vboxdrv stop || true
      fi
      if [ $REGISTER_MODULES -eq 1 ]; then
        DKMS=`which dkms 2>/dev/null`
        if [ -n "$DKMS" ]; then
          $DKMS add -m vboxhost -v %VER% > /dev/null 2>&1 || true
        fi
      fi
      if [ -x "`which invoke-rc.d 2>/dev/null`" ]; then
        invoke-rc.d vboxdrv start || exit $?
      else
        /etc/init.d/vboxdrv start || exit $?
      fi
    fi
  fi
  if [ -x "/etc/init.d/vboxweb-service" ]; then
    update-rc.d vboxweb-service defaults >/dev/null
    if [ -x "`which invoke-rc.d 2>/dev/null`" ]; then
        invoke-rc.d vboxweb-service start || exit $?
    else
        /etc/init.d/vboxweb-service start || exit $?
    fi
  fi

fi # $1 = "configure"

exit 0