#!/bin/bash
# assume squashfs 4.0

if [ "`id -u`" -ne 0 ]; then
	PKEXEC="`command -v pkexec`"
	[ -n "$PKEXEC" ] && exec "$PKEXEC" "$0" "$@"
fi

. /etc/DISTRO_SPECS

export TEXTDOMAIN=filemnt
export OUTPUT_CHARSET=UTF-8
. gettext.sh

#===================================================================

if [ "$1" = "-m" -o "$1" = "-manager" ] ; then #pupimgfile-manager written by mistfire
	. /etc/rc.d/PUPSTATE
	ALLPS="`ps`"
	OLDPIDS="`echo "$ALLPS" | grep 'gtkdialog' | grep 'PIMGGUI' | tr -s ' ' | sed -e 's%^ %%' | cut -f 1 -d ' ' | tr '\n' ' '`"
	kill $OLDPIDS 2>/dev/null

	df | grep ' /mnt/' | grep '/loop' | tr -s ' ' | cut -f 6 -d ' ' > /tmp/mounted-images
	df | grep ' /media/' | grep '/loop' | tr -s ' ' | cut -f 6 -d ' ' >> /tmp/mounted-images

	content=`cat /tmp/mounted-images`
	IMGCNT=1

	for d1 in `cat /tmp/mounted-images | sort`;
	do
		ONEMNTPT="$d1"
		LOOP1=`df | grep "$ONEMNTPT" | tr -s ' ' | cut -f 1 -d ' '`
		FILENAME=`basename $(losetup -a | grep "$LOOP1" | cut -f 3 -d ' ')`
		if [ "$ONEMNTPT" != "" ];then #not mounted.
			PARTSGUI="${PARTSGUI}<hbox><text><label>$FILENAME</label></text><button><label>UNMNT</label><action>umount $ONEMNTPT</action><action>rmdir $ONEMNTPT</action><action>EXIT:refresh</action></button><button><input file stock=\"gtk-open\"></input><label>OPEN</label><action>rox -d $ONEMNTPT&</action><sensitive>true</sensitive></button></hbox>"
		fi
		IMGCNT=`echo $(expr $IMGCNT + 1)`
	done

	[ "$PARTSGUI" ] || PARTSGUI="<text><label>NO MOUNTED IMAGES</label></text>"
	#-
	WIDTH=600
	SRCNXY=$(LANG=C xwininfo -root | grep -o '\-geometry .*' | sed 's/+.*// ;  s/-geometry //')
	SCRN_X=`echo "$SRCNXY" | cut -f 1 -d 'x'`
	[ "$SCRN_X" -a $SCRN_X -le 640 ] && WIDTH=500
	[ "$SCRN_X" -a $SCRN_X -le 500 ] && WIDTH=400
	#-
	export PIMGGUI="
	<window title=\"$(gettext 'Mounted Image Manager')\" icon-name=\"gtk-execute\" resizable=\"false\">
	 <vbox height-request=\"300\" width-request=\"${WIDTH}\">
	  <vbox>
	  `/usr/lib/gtkdialog/xml_info fixed copy_cd.svg 40 \"<b>Mounted image files</b>\" \"$(gettext 'You can unmount them here')\"`
	  </vbox>
	  <frame To UNMNT mounted images must not be in use>
	  <vbox scrollable=\"true\" space-expand=\"true\">
	  ${PARTSGUI}
	  </vbox>
	  </frame>
	  <hbox>
	   <button><input file stock=\"gtk-refresh\"></input><label>REFRESH</label>
		<action type=\"exit\">refresh</action>
	   </button>
	   <button><input file stock=\"gtk-quit\"></input><label>QUIT</label></button>
	  </hbox>
	 </vbox>
	</window>"
	RETPARAMS="`gtkdialog --program=PIMGGUI --center --styles=/tmp/gtkrc_xml_info.css`"
	rm -f /tmp/mounted-images
	#echo "$RETPARAMS"
	echo "$RETPARAMS" | grep -q "refresh" && exec sh $0 -m
	exit
fi

#===================================================================

imgFile="$1"
[ ! -f "$imgFile" ] && echo "No regular file: $imgFile" && exit 1
imgFileBASE=${imgFile##*/} ## imgFileBASE="`basename "$imgFile"`" #BK
[ "$(dirname "$imgFile")" = "." ] && imgFile=$(pwd)/${imgFileBASE}

[ ! -e /media ] && mkdir /media

# may need to replace with /mnt/home...
HOMELINK="`readlink /mnt/home`"
case $HOMELINK in *initrd*)
  imgFile="`echo -n "$imgFile" | sed -e "s%${HOMELINK}%/mnt/home%"`"
  #ex: /initrd/mnt/dev_save/kernel_src-3.0.7-patched.sfs becomes /mnt/home/kernel_src-3.0.7-patched.sfs
esac

#ex: /mnt/home/kernel_src-3.0.7-patched.sfs becomes /media/+mnt+home+kernel_src-3.0.7-patched.sfs
MOUNTPOINT='/media/'"`echo "$imgFile" |sed "s#^\.##g" |sed "s#/#+#g" | tr ' ' '_'`" # SFR, added 'tr'
# BK is it already mounted?
MNTEDLOOP="$(cat /proc/mounts | grep -F " $MOUNTPOINT " | cut -f 1 -d ' ')"
[ ! -z $MNTEDLOOP ] && MNTEDLOOP=$(echo "$MNTEDLOOP" | sed 's|/dev/loop/|/dev/loop|') 

if [ "$MNTEDLOOP" = "" ];then #not mounted on $MOUNTPOINT

  Ext=${imgFile##*.} #get file extension   ## Ext=`echo "$imgFile" |sed 's/^.*\.//'`
  Ext=${Ext,,}       #convert to lowercase ## Ext=`echo $Ext | tr [:upper:] [:lower:]`
  Type=$(blkid "$imgFile" | grep -o ' TYPE=.*' | cut -f 2 -d '"')
  if [ "$Type" = "" ] ; then
    case ${Ext} in
      2fs) Type='ext2' ;;
      3fs) Type='ext3' ;;
      4fs) Type='ext4' ;;
      sfs|lzm|xzm|sb|squashfs) Type='squashfs' ;;
      iso) Type='iso'  ;;
      wim) Type='wim'  ;;
    esac
  fi
  if [ "$Type" = "" ] ; then
    echo "Unrecognized format"
    exit 1
  fi
  if [ "$Type" = "wim" ] ; then
    if ! which wimmountrw ; then
      echo "You must install wimlib - https://wimlib.net/"
      exit 1
    fi
  fi
  echo -e "\nType=${Type}\n"

  if [ "$Type" = "squashfs" ];then
      . /etc/rc.d/BOOTCONFIG # 140609 add contextual Install/Uninstall button
      echo $EXTRASFSLIST > /tmp/sfsloaded
      if [ "`grep $imgFileBASE /tmp/sfsloaded`" != "" ];then
        LABELINSTALL="$(gettext 'Uninstall SFS')"
        TEXTINSTALL="$(gettext 'uninstall it')"
      else
        LABELINSTALL="$(gettext 'Install SFS')"
        TEXTINSTALL="$(gettext 'install it')"
      fi
      SFSMSG1a="$(eval_gettext "You can choose to mount the ${imgFileBASE} file to view it's contents (read-only), or you can ${TEXTINSTALL}.")" #'geany
      SFSMSG1b="$(gettext 'Regarding the latter, traditionally SFS files are selected by the <b>BootManager</b> for loading at bootup (see System menu), which you can do, or you can choose to install (load) it now (which will not require a reboot).')"
      SFSMSG1c="$(gettext 'Note1: If you want to edit the contents of an SFS file, you have to use the commandline utilities <b>unsquashfs</b> and <b>mksquashfs</b>.')"
      SFSMSG1d="$(gettext 'Note2: In the case of a full HD installation, without a layered filesystem, installation is irreversible. For all other installation modes, the BootManager can be used to unload an installed (loaded) SFS file.')"
      /usr/lib/gtkdialog/box_yesno --yes-first --yes-label "$(gettext 'View contents')" --no-label "$LABELINSTALL"  --extra-button "$(gettext 'Cancel')" --no-icon package_sfs.svg --extra-icon close.svg "${imgFileBASE}" "${SFSMSG1a}" "${SFSMSG1b}" "${SFSMSG1c}" "${SFSMSG1d}"
      RETVAL=$?
      [ $RETVAL -eq 1 ] && exec sfs_load "$1"
      [ $RETVAL -ne 0 ] && exit #120527
  else
     /usr/lib/gtkdialog/box_yesno --yes-first "Filemnt: Mount Image" "Do you want to mount this image?" "$imgFileBASE"
     if [ $? -ne 0 ]; then
       exit 0
     fi
  fi

  echo -e "\n ### Mount: $imgFile\n"
  mkdir -p "$MOUNTPOINT"

  #111110 handle encrypted save-files...
  CRYPTO=""; Err=0
  DEVLOOP="`losetup -f`" #next free loop device.
  case $Type in ext2|ext3|ext4)
    case $imgFileBASE in
     *_cryptx*) #light encryption.
      CRYPTO='-e 1'
      modprobe cryptoloop
     ;;
     *_crypt*) #heavy encryption.
      CRYPTO='-e aes'
      modprobe cryptoloop
      modprobe aes_generic 2>/dev/null #v407 aes name change.
      modprobe aes 2>/dev/null #for older kernel <2.6.25
      modprobe crypto_blkcipher 2>/dev/null #v407 blkcipher name change.
      modprobe blkcipher 2>/dev/null #old kernel.
      modprobe cbc
     ;;
    esac
  esac

  if [ "$CRYPTO" ];then
    Err=1
    MYPASS="$(/usr/lib/gtkdialog/box_passwd "$(gettext 'Password required')" "$(gettext 'Password required to open') ${imgFileBASE}")"
    if [ $? -eq 0 ] ; then
      echo "$MYPASS" | losetup-222 -p 0 ${CRYPTO} $DEVLOOP "$imgFile"
      if [ $? -eq 0 ] ; then
        mount -t $Type $DEVLOOP "$MOUNTPOINT" && Err=0
      fi
    fi

  else #normal, no encryption... 130204 mavrothal: fix spaces in imgFile...
    case $Type in 
      iso|udf|iso9660) #iso img might have more than 1 fs. prefer udf..
         mount -r -t udf -o loop "$imgFile" "$MOUNTPOINT" || mount -r -t iso9660 -o loop "$imgFile" "$MOUNTPOINT"
         ;;
      exfat)
         mount -t exfat -o loop "$imgFile" "$MOUNTPOINT" || {
            # musl static mount.exfat fails
            # have to set loop device manually...
            losetup $DEVLOOP "$imgFile"
            mount.exfat-fuse $DEVLOOP "$MOUNTPOINT"
         }
         ;;
      crypto_LUKS) # /sbin/mount.crypto_LUKS
         mount.crypto_LUKS file "$imgFile" "$MOUNTPOINT" ;;
      ntfs)
         losetup $DEVLOOP "$imgFile"
         mount -t ntfs $DEVLOOP "$MOUNTPOINT"
         ;;
      wim)
         wimmountrw "$imgFile" "$MOUNTPOINT" || \
           wimmount "$imgFile" "$MOUNTPOINT"
         ;;
      *) 
         mount -t ${Type} -o loop,rw "$imgFile" "$MOUNTPOINT"
         ;;
    esac
    Err=$?
  fi

  if [ $Err -eq 0 ] ;then

   if grep -q -m1 -i 'pcmanfm' /usr/local/bin/defaultfilemanager ; then
      defaultfilemanager -n "$MOUNTPOINT" &
   else
      defaultfilemanager_x $NEWWINDOW "$MOUNTPOINT" &
   fi

  else
    [ "$CRYPTO" ] && losetup-222 -d $DEVLOOP
    rmdir "$MOUNTPOINT" #121203
  fi


#### mounted ####
else

  /usr/lib/gtkdialog/box_yesno --yes-first "Filemnt: Unmount image file" "NOTICE: $imgFileBASE is mounted" "" "" "Do you want to unmount this image file?"
  if [ $? -ne 0 ]; then
    exit
  fi

  mntinfo=$(mount | grep " $MOUNTPOINT ")
  ## file's mounted, unmount it
  echo -e "\n ### UnMount: $imgFile\n"

  case "$mntinfo" in "/dev/mapper/luksfile"*)
      . /sbin/umount.crypto_LUKS 
      luks_umount "$mntinfo"
      ;;
    *)
      # better free loop device before calling umount...
      losetup -d ${MNTEDLOOP}
      case "$imgFile" in
         *.[w-W][i-I][m-M]) wimunmount --commit "$MOUNTPOINT" ;;
         *) umount "$MOUNTPOINT" ;;
      esac
      ;;
  esac

  Err=$?
  sync
  sleep 1
  if [ $Err -eq 0 ] ; then
    rmdir "$MOUNTPOINT"
    /usr/lib/gtkdialog/box_ok "Filemnt" info "$imgFileBASE is unmounted" &
    XPID=$!; sleep 3; pkill -P $XPID 2>/dev/null
  fi
fi

## ERROR: mount/unmount
if [ $Err -ne 0 ] ;then
  /usr/lib/gtkdialog/box_splash -timeout 3 -bg red -text "$(gettext 'Failed mounting or unmounting') $imgFileBASE" #BK
fi

###END###