#!/bin/sh
# Mount and view pen drive
# needs sudo permission for mount and umount
#
# (c) Eko M. Budi, 2004
# (c) Vector Linux, 2004
#
# License : GNU GPL

MNT_PENDRIVE=${MNT_PENDRIVE:-/mnt/pendrive}
MNT_USB_STORAGE=${MNT_USB:-/mnt/usb-storage}

# Check if already mounted (should be by usb-mount)
LINE=`mount | grep -e "^.* on $MNT_USB_STORAGE"`
if [ "$LINE" ]; then
    echo "$MNT_USB_STORAGE is already mounted, exploring ..."
    explorer $MNT_USB_STORAGE
    exit 0
fi

/sbin/modprobe usb-storage &> /dev/null
sleep 1

# Determine user through ownership of console. Barring the absence of
# perl or misconfigured X, this command cannot fail. Look familiar? It's used
# by explorer, too.
USB_USER=$(ls -l /dev/console | perl -e \
           'local $_ = <>; split / +/; print $_[2], "\n";');
USB_GROUP=users
DEF_OPT="sync,dirsync,user"

case `uname -r` in
    2.2*|2.4*)   MASK_OPT="umask=7" ;;
    *) MASK_OPT="umask=117,dmask=007" ;;
esac

mount_dev() {
    FSYS=`sudo disktype /dev/$1 | grep -m 1 "file system" | cut -f1 -d ' '`
    case $FSYS in
   Ext2)
       fsOpt="noatime"
       fsType="ext2"
       ;;
        Ext3)
       fsOpt="noatime"
       fsType="ext3"
       ;;
        ReiserFS)
       fsOpt="noatime"
       fsType="reiserfs"
       ;;
        NTFS)
       fsOpt="uid=$USB_USER,gid=$USB_GROUP,$MASK_OPT,quiet,noatime"
       fsType="ntfs"
       ;;
        FAT16|FAT32)
       fsOpt="uid=$USB_USER,gid=$USB_GROUP,$MASK_OPT,shortname=mixed,quiet,noatime"
       fsType="vfat"
       ;;
   "")
       return 1
       ;;

        *)
       fsOpt="uid=$USB_USER,gid=$USB_GROUP,$MASK_OPT,quiet,noatime"
       fsType="auto"
       ;;
    esac
    echo "Pendrive found on $DEV"
    mkdir -p $MNT_PENDRIVE
    echo
    echo "mount /dev/$DEV $MNT_PENDRIVE -t $fsType -o $fsOpt,$DEF_OPT"
    if sudo /bin/mount /dev/$DEV $MNT_PENDRIVE -t $fsType -o $fsOpt,$DEF_OPT; then
   echo "Pendrive mounted on $MNT_PENDRIVE"
   explorer $MNT_PENDRIVE
   sudo /bin/umount $MNT_PENDRIVE
   echo "Pendrive unmounted"
   exit 0
    else
   message "ERROR" "Could not mount pendrive $DEV"
   exit 1
    fi
    echo CCC
    sleep 1
    exit 0
}

# Kernel 2.4. based
#
# Tested on Kernel 2.4.27
# Dependes on dmesg output like this:
#
# Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0
# SCSI device sda: 240640 512-byte hdwr sectors (123 MB)
# sda: Write Protect is off
# sda: sda1                               <<== detected device (sda1)
# WARNING: USB Mass Storage data integrity not assured
# USB Mass Storage device found at 2      <<== identified pattern
pd_kernel24() {
echo "Kernel 2.4 USB pendrive:"
LINE=`dmesg | grep -B 5 -e "^USB Mass Storage device found" | grep -e '^ sd.:'`
if [ "$LINE" ]; then
    DEV=`echo $LINE | cut -f2 -d:`
    DEV=`echo $DEV`
    mount_dev $DEV
else
    message "ERROR" "Could not find pendrive"
    exit 1
fi
}

# Tested on Kernel 2.6.12
# Dependes on dmesg output like this:
#
# sda : sda1                                <<== detected device (sda1)
# As of Standard 5.0 RC2, we are using usb-storage driver
pd_kernel26() {
echo "Kernel 2.6 USB pendrive:"
DEV=`dmesg | grep -A 12 "^usb-storage: device found" | grep '^ sd.:' | \
     sed -e 's/^ sd.: //g'`
if [ "$DEV" ]; then
    mount_dev $DEV;
else
    message "ERROR" "Could not find pendrive"
    exit 1
fi
}

if [[ "`uname -r`" =~ "2.4.[0-9]*" ]] ; then
    pd_kernel24
elif [[ "`uname -r`" =~ "2.6.[0-9]*" ]]; then
    pd_kernel26
else
    message "ERROR" "Unknown kernel version"
    exit 1
fi