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path: root/src/ntfs_udl.c
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/*
    File: ntfs_udl.c
    Copyright (C) 2007-2008 Christophe GRENIER <grenier@cgsecurity.org>

 * Original source: ntfsundelete.c from Linux-NTFS project
 * Copyright (c) 2002-2005 Richard Russon
 * Copyright (c) 2004-2005 Holger Ohmacht
 * Copyright (c) 2005 Anton Altaparmakov
 *
 * This utility will recover deleted files from an NTFS volume.
 *
 * This program 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program (in the main directory of the Linux-NTFS
 * distribution in the file COPYING); if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#ifdef HAVE_FEATURES_H
#include <features.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#include "types.h"
#include "common.h"
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#ifdef HAVE_STDARG_H
#include <stdarg.h>
#endif

#if !defined(REG_NOERROR) || (REG_NOERROR != 0)
#define REG_NOERROR 0
#endif

#include "list.h"
#include "list_sort.h"
#include "log.h"
#include "log_part.h"
#include "ntfs_udl.h"
#include "intrf.h"
#include "intrfn.h"

#ifdef HAVE_LIBNTFS
#include <ntfs/bootsect.h>
#include <ntfs/mft.h>
#include <ntfs/attrib.h>
#include <ntfs/layout.h>
#include <ntfs/inode.h>
#include <ntfs/device.h>
#include <ntfs/debug.h>
#include <ntfs/ntfstime.h>
#ifdef HAVE_NTFS_VERSION_H
#include <ntfs/version.h>
#endif
#endif

#ifdef HAVE_LIBNTFS3G
#include <ntfs-3g/bootsect.h>
#include <ntfs-3g/mft.h>
#include <ntfs-3g/attrib.h>
#include <ntfs-3g/layout.h>
#include <ntfs-3g/inode.h>
#include <ntfs-3g/device.h>
#include <ntfs-3g/debug.h>
#include <ntfs-3g/ntfstime.h>
#endif

#if defined(HAVE_LIBNTFS) || defined(HAVE_LIBNTFS3G)
#ifdef HAVE_ICONV_H
#include <iconv.h>
#endif
#include "dir.h"
#include "ntfs_inc.h"
#include "ntfs_dir.h"
#include "ntfs_utl.h"
#include "askloc.h"
#include "setdate.h"

struct options {
	char		*dest;		/* Save file to this directory */
};

struct filename {
	struct td_list_head list;		/* Previous/Next links */
	ntfschar	*uname;		/* Filename in unicode */
	int		 uname_len;	/* and its length */
	uint64_t	 size_alloc;	/* Allocated size (multiple of cluster size) */
	uint64_t	 size_data;	/* Actual size of data */
	FILE_ATTR_FLAGS	 flags;
	time_t		 date_c;	/* Time created */
	time_t		 date_a;	/*	altered */
	time_t		 date_m;	/*	mft record changed */
	time_t		 date_r;	/*	read */
	char		*name;		/* Filename in current locale */
	FILE_NAME_TYPE_FLAGS name_space;
	uint64_t	 parent_mref;
	char		*parent_name;
};

struct data {
	struct td_list_head list;		/* Previous/Next links */
	char		*name;		/* Stream name in current locale */
	ntfschar	*uname;		/* Unicode stream name */
	int		 uname_len;	/* and its length */
	int		 resident;	/* Stream is resident */
	int		 compressed;	/* Stream is compressed */
	int		 encrypted;	/* Stream is encrypted */
	uint64_t	 size_alloc;	/* Allocated size (multiple of cluster size) */
	uint64_t	 size_data;	/* Actual size of data */
	uint64_t	 size_init;	/* Initialised size, may be less than data size */
	uint64_t	 size_vcn;	/* Highest VCN in the data runs */
	runlist_element *runlist;	/* Decoded data runs */
	unsigned int	 percent;	/* Amount potentially recoverable */
	void		*data;		/* If resident, a pointer to the data */
};

struct ufile {
	uint64_t	 inode;		/* MFT record number */
	time_t		 date;		/* Last modification date/time */
	struct td_list_head name;		/* A list of filenames */
	struct td_list_head data;		/* A list of data streams */
	char		*pref_name;	/* Preferred filename */
	char		*pref_pname;	/*	     parent filename */
	uint64_t	 max_size;	/* Largest size we find */
	int		 attr_list;	/* MFT record may be one of many */
	int		 directory;	/* MFT record represents a directory */
	MFT_RECORD	*mft;		/* Raw MFT record */
};

static const char *UNKNOWN   = "unknown";
static struct options opts;

/**
 * free_file - Release the resources used by a file object
 * @file:  The unwanted file object
 *
 * This will free up the memory used by a file object and iterate through the
 * object's children, freeing their resources too.
 *
 * Return:  none
 */
static void free_file(struct ufile *file)
{
  struct td_list_head *item, *tmp;

  if (!file)
    return;

  td_list_for_each_safe(item, tmp, &file->name) { /* List of filenames */
    struct filename *f = td_list_entry(item, struct filename, list);
    free(f->name);
    free(f->parent_name);
    free(f);
  }

  td_list_for_each_safe(item, tmp, &file->data) { /* List of data streams */
    struct data *d = td_list_entry(item, struct data, list);
    free(d->name);
    free(d->runlist);
    free(d);
  }

  free(file->mft);
  free(file);
}

/**
 * verify_parent - confirm a record is parent of a file
 * @name:	a filename of the file
 * @rec:	the mft record of the possible parent
 *
 * Check that @rec is the parent of the file represented by @name.
 * If @rec is a directory, but it is created after @name, then we
 * can't determine whether @rec is really @name's parent.
 *
 * Return:	@rec's filename, either same name space as @name or lowest space.
 *		NULL if can't determine parenthood or on error.
 */
static FILE_NAME_ATTR* verify_parent(struct filename* name, MFT_RECORD* rec)
{
	ATTR_RECORD *attr30;
	FILE_NAME_ATTR *filename_attr = NULL, *lowest_space_name = NULL;
	ntfs_attr_search_ctx *ctx;
	int found_same_space = 1;

	if (!name || !rec)
		return NULL;

	if (!(rec->flags & MFT_RECORD_IS_DIRECTORY)) {
		return NULL;
	}

	ctx = ntfs_attr_get_search_ctx(NULL, rec);
	if (!ctx) {
		log_error("ERROR: Couldn't create a search context.\n");
		return NULL;
	}

	attr30 = find_attribute(AT_FILE_NAME, ctx);
	if (!attr30) {
		return NULL;
	}

	filename_attr = (FILE_NAME_ATTR*)((char*)attr30 + le16_to_cpu(attr30->value_offset));
	/* if name is older than this dir -> can't determine */
	if (td_ntfs2utc(filename_attr->creation_time) > name->date_c) {
		return NULL;
	}
	if (filename_attr->file_name_type != name->name_space) {
		found_same_space = 0;
		lowest_space_name = filename_attr;

		while (!found_same_space && (attr30 = find_attribute(AT_FILE_NAME, ctx))) {
			filename_attr = (FILE_NAME_ATTR*)((char*)attr30 + le16_to_cpu(attr30->value_offset));

			if (filename_attr->file_name_type == name->name_space) {
				found_same_space = 1;
			} else {
				if (filename_attr->file_name_type < lowest_space_name->file_name_type) {
					lowest_space_name = filename_attr;
				}
			}
		}
	}

	ntfs_attr_put_search_ctx(ctx);

	return (found_same_space ? filename_attr : lowest_space_name);
}

/**
 * get_parent_name - Find the name of a file's parent.
 * @name:	the filename whose parent's name to find
 */
static void get_parent_name(struct filename* name, ntfs_volume* vol)
{
  ntfs_attr* mft_data;
  MFT_RECORD* rec;

  if (!name || !vol)
    return;

  mft_data = ntfs_attr_open(vol->mft_ni, AT_DATA, AT_UNNAMED, 0);
  if (!mft_data) {
    log_error("ERROR: Couldn't open $MFT/$DATA\n");
    return;
  }
  rec = (MFT_RECORD*) calloc(1, vol->mft_record_size);
  if (!rec) {
    log_error("ERROR: Couldn't allocate memory in get_parent_name()\n");
    ntfs_attr_close(mft_data);
    return;
  }

  {
    uint64_t inode_num;
    int ok;
    inode_num = MREF(name->parent_mref);
    name->parent_name = NULL;
    do
    {
      FILE_NAME_ATTR* filename_attr;
      ok=0;
      if (ntfs_attr_pread(mft_data, vol->mft_record_size * inode_num, vol->mft_record_size, rec) < 1)
      {
	log_error("ERROR: Couldn't read MFT Record %llu.\n", (long long unsigned)inode_num);
      }
      else if ((filename_attr = verify_parent(name, rec)))
      {
	char *parent_name=NULL;
	if (ntfs_ucstombs(filename_attr->file_name,
	      filename_attr->file_name_length,
	      &parent_name, 0) < 0)
	{
	  log_error("ERROR: Couldn't translate filename to current locale.\n");
	  parent_name = NULL;
	}
	else
	{
	  if(name->parent_name==NULL || parent_name==NULL)
	    name->parent_name=parent_name;
	  else
	  {
	    char *npn;
	    if(inode_num==5 && strcmp(parent_name,".")==0)
	    {
	      /* root directory */
	      npn=(char *)MALLOC(strlen(name->parent_name)+2);
	      sprintf(npn, "/%s", name->parent_name);
	    }
	    else
	    {
	      npn=(char *)MALLOC(strlen(parent_name)+strlen(name->parent_name)+2);
	      sprintf(npn, "%s/%s", parent_name, name->parent_name);
	    }
	    free(name->parent_name);
	    name->parent_name=npn;
	    free(parent_name);
	  }
	  if((unsigned)inode_num!=MREF(filename_attr->parent_directory))
	  {
	    inode_num=MREF(filename_attr->parent_directory);
	    ok=1;
	  }
	}
      }
    } while(ok);
  }
  free(rec);
  ntfs_attr_close(mft_data);
  return;
}

/**
 * get_filenames - Read an MFT Record's $FILENAME attributes
 * @file:  The file object to work with
 *
 * A single file may have more than one filename.  This is quite common.
 * Windows creates a short DOS name for each long name, e.g. LONGFI~1.XYZ,
 * LongFiLeName.xyZ.
 *
 * The filenames that are found are put in filename objects and added to a
 * linked list of filenames in the file object.  For convenience, the unicode
 * filename is converted into the current locale and stored in the filename
 * object.
 *
 * One of the filenames is picked (the one with the lowest numbered namespace)
 * and its locale friendly name is put in pref_name.
 *
 * Return:  n  The number of $FILENAME attributes found
 *	   -1  Error
 */
static int get_filenames(struct ufile *file, ntfs_volume* vol)
{
	ATTR_RECORD *rec;
	ntfs_attr_search_ctx *ctx;
	int count = 0;
	int space = 4;

	if (!file)
		return -1;

	ctx = ntfs_attr_get_search_ctx(NULL, file->mft);
	if (!ctx)
		return -1;

	while ((rec = find_attribute(AT_FILE_NAME, ctx))) {
		struct filename *name;
		FILE_NAME_ATTR *attr;
		/* We know this will always be resident. */
		attr = (FILE_NAME_ATTR *) ((char *) rec + le16_to_cpu(rec->value_offset));

		name = (struct filename *)calloc(1, sizeof(*name));
		if (!name) {
			log_error("ERROR: Couldn't allocate memory in get_filenames().\n");
			count = -1;
			break;
		}

		name->uname      = attr->file_name;
		name->uname_len  = attr->file_name_length;
		name->name_space = attr->file_name_type;
		name->size_alloc = sle64_to_cpu(attr->allocated_size);
		name->size_data  = sle64_to_cpu(attr->data_size);
		name->flags      = attr->file_attributes;

		name->date_c     = td_ntfs2utc(attr->creation_time);
		name->date_a     = td_ntfs2utc(attr->last_data_change_time);
		name->date_m     = td_ntfs2utc(attr->last_mft_change_time);
		name->date_r     = td_ntfs2utc(attr->last_access_time);

		if (ntfs_ucstombs(name->uname, name->uname_len, &name->name,
				0) < 0) {
			log_error("ERROR: Couldn't translate filename to current locale.\n");
		}

		name->parent_name = NULL;
		name->parent_mref = attr->parent_directory;
		get_parent_name(name, vol);

		if (name->name_space < space) {
			file->pref_name = name->name;
			file->pref_pname = name->parent_name;
			space = name->name_space;
		}

		file->max_size = max(file->max_size, name->size_alloc);
		file->max_size = max(file->max_size, name->size_data);

		td_list_add_tail(&name->list, &file->name);
		count++;
	}

	ntfs_attr_put_search_ctx(ctx);
	log_debug("File has %d names.\n", count);
	return count;
}

/**
 * get_data - Read an MFT Record's $DATA attributes
 * @file:  The file object to work with
 * @vol:  An ntfs volume obtained from ntfs_mount
 *
 * A file may have more than one data stream.  All files will have an unnamed
 * data stream which contains the file's data.  Some Windows applications store
 * extra information in a separate stream.
 *
 * The streams that are found are put in data objects and added to a linked
 * list of data streams in the file object.
 *
 * Return:  n  The number of $FILENAME attributes found
 *	   -1  Error
 */
static int get_data(struct ufile *file, ntfs_volume *vol)
{
	ATTR_RECORD *rec;
	ntfs_attr_search_ctx *ctx;
	int count = 0;

	if (!file)
		return -1;

	ctx = ntfs_attr_get_search_ctx(NULL, file->mft);
	if (!ctx)
		return -1;

	while ((rec = find_attribute(AT_DATA, ctx))) {
		struct data *data;
		data = (struct data *)calloc(1, sizeof(*data));
		if (!data) {
			log_error("ERROR: Couldn't allocate memory in get_data().\n");
			count = -1;
			break;
		}

		data->resident   = !rec->non_resident;
		data->compressed = rec->flags & ATTR_IS_COMPRESSED;
		data->encrypted  = rec->flags & ATTR_IS_ENCRYPTED;

		if (rec->name_length) {
			data->uname     = (ntfschar *) ((char *) rec + le16_to_cpu(rec->name_offset));
			data->uname_len = rec->name_length;

			if (ntfs_ucstombs(data->uname, data->uname_len, &data->name,
					0) < 0) {
				log_error("ERROR: Cannot translate name into current locale.\n");
			}
		}

		if (data->resident) {
			data->size_data  = le32_to_cpu(rec->value_length);
			data->data	 = ((char*) (rec)) + le16_to_cpu(rec->value_offset);
		} else {
			data->size_alloc = sle64_to_cpu(rec->allocated_size);
			data->size_data  = sle64_to_cpu(rec->data_size);
			data->size_init  = sle64_to_cpu(rec->initialized_size);
			data->size_vcn   = sle64_to_cpu(rec->highest_vcn) + 1;
		}

		data->runlist = ntfs_mapping_pairs_decompress(vol, rec, NULL);
		if (!data->runlist) {
			log_debug("Couldn't decompress the data runs.\n");
		}

		file->max_size = max(file->max_size, data->size_data);
		file->max_size = max(file->max_size, data->size_init);

		td_list_add_tail(&data->list, &file->data);
		count++;
	}

	ntfs_attr_put_search_ctx(ctx);
	log_debug("File has %d data streams.\n", count);
	return count;
}

/**
 * read_record - Read an MFT record into memory
 * @vol:     An ntfs volume obtained from ntfs_mount
 * @record:  The record number to read
 *
 * Read the specified MFT record and gather as much information about it as
 * possible.
 *
 * Return:  Pointer  A ufile object containing the results
 *	    NULL     Error
 */
static struct ufile * read_record(ntfs_volume *vol, uint64_t record)
{
	ATTR_RECORD *attr10, *attr20, *attr90;
	struct ufile *file;
	ntfs_attr *mft;

	if (!vol)
		return NULL;

	file = (struct ufile *)calloc(1, sizeof(*file));
	if (!file) {
		log_error("ERROR: Couldn't allocate memory in read_record()\n");
		return NULL;
	}

	TD_INIT_LIST_HEAD(&file->name);
	TD_INIT_LIST_HEAD(&file->data);
	file->inode = record;

	file->mft = (MFT_RECORD *)MALLOC(vol->mft_record_size);

	mft = ntfs_attr_open(vol->mft_ni, AT_DATA, AT_UNNAMED, 0);
	if (!mft) {
		log_error("ERROR: Couldn't open $MFT/$DATA\n");
		free_file(file);
		return NULL;
	}

	if (ntfs_attr_mst_pread(mft, vol->mft_record_size * record, 1, vol->mft_record_size, file->mft) < 1) {
		log_error("ERROR: Couldn't read MFT Record %llu.\n", (long long unsigned)record);
		ntfs_attr_close(mft);
		free_file(file);
		return NULL;
	}

	ntfs_attr_close(mft);
	mft = NULL;

	attr10 = find_first_attribute(AT_STANDARD_INFORMATION,	file->mft);
	attr20 = find_first_attribute(AT_ATTRIBUTE_LIST,	file->mft);
	attr90 = find_first_attribute(AT_INDEX_ROOT,		file->mft);

	log_debug("Attributes present: %s %s %s.\n", attr10?"0x10":"",
			attr20?"0x20":"", attr90?"0x90":"");

	if (attr10) {
		STANDARD_INFORMATION *si;
		si = (STANDARD_INFORMATION *) ((char *) attr10 + le16_to_cpu(attr10->value_offset));
		file->date = td_ntfs2utc(si->last_data_change_time);
	}

	if (attr20 || !attr10)
		file->attr_list = 1;
	if (attr90)
		file->directory = 1;

	if (get_filenames(file, vol) < 0) {
		log_error("ERROR: Couldn't get filenames.\n");
	}
	if (get_data(file, vol) < 0) {
		log_error("ERROR: Couldn't get data streams.\n");
	}

	return file;
}

/**
 * calc_percentage - Calculate how much of the file is recoverable
 * @file:  The file object to work with
 * @vol:   An ntfs volume obtained from ntfs_mount
 *
 * Read through all the $DATA streams and determine if each cluster in each
 * stream is still free disk space.  This is just measuring the potential for
 * recovery.  The data may have still been overwritten by a another file which
 * was then deleted.
 *
 * Files with a resident $DATA stream will have a 100% potential.
 *
 * N.B.  If $DATA attribute spans more than one MFT record (i.e. badly
 *       fragmented) then only the data in this segment will be used for the
 *       calculation.
 *
 * N.B.  Currently, compressed and encrypted files cannot be recovered, so they
 *       will return 0%.
 *
 * Return:  n  The percentage of the file that _could_ be recovered
 *	   -1  Error
 */
static unsigned int calc_percentage(struct ufile *file, ntfs_volume *vol)
{
  struct td_list_head *pos;
  unsigned int percent = 0;

  if (!file || !vol)
    return -1;

  if (file->directory) {
    return 0;
  }

  if (td_list_empty(&file->data)) {
    return 0;
  }

  td_list_for_each(pos, &file->data) {
    runlist_element *rl = NULL;
    uint64_t i;
    unsigned int clusters_inuse, clusters_free;
    struct data *data;
    data  = td_list_entry(pos, struct data, list);
    clusters_inuse = 0;
    clusters_free  = 0;

    if (data->encrypted) {
      log_debug("File is encrypted, recovery is impossible.\n");
      continue;
    }

    if (data->compressed) {
      log_debug("File is compressed, recovery not yet implemented.\n");
      continue;
    }

    if (data->resident) {
      percent = 100;
      data->percent = 100;
      continue;
    }

    rl = data->runlist;
    if (!rl) {
      log_debug("File has no runlist, hence no data.\n");
      continue;
    }

    if (rl[0].length <= 0) {
      log_debug("File has an empty runlist, hence no data.\n");
      continue;
    }

    if (rl[0].lcn == LCN_RL_NOT_MAPPED) {	/* extended mft record */
      log_debug("Missing segment at beginning, %lld clusters\n", (long long)rl[0].length);
      clusters_inuse += rl[0].length;
      rl++;
    }

    for (i = 0; rl[i].length > 0; i++) {
      uint64_t start, end;
      uint64_t j;
      if (rl[i].lcn == LCN_RL_NOT_MAPPED) {
	log_debug("Missing segment at end, %lld clusters\n",
	    (long long)rl[i].length);
	clusters_inuse += rl[i].length;
	continue;
      }

      if (rl[i].lcn == LCN_HOLE) {
	clusters_free += rl[i].length;
	continue;
      }

      start = rl[i].lcn;
      end   = rl[i].lcn + rl[i].length;

      for (j = start; j < end; j++) {
	if (utils_cluster_in_use(vol, j))
	  clusters_inuse++;
	else
	  clusters_free++;
      }
    }

    if ((clusters_inuse + clusters_free) == 0) {
      log_error("ERROR: Unexpected error whilst "
	  "calculating percentage for inode %llu\n",
	  (long long unsigned)file->inode);
      continue;
    }

    data->percent = (clusters_free * 100) /
      (clusters_inuse + clusters_free);

    percent = max(percent, data->percent);
  }
  return percent;
}

/**
 * write_data - Write out a block of data
 * @fd:       File descriptor to write to
 * @buffer:   Data to write
 * @bufsize:  Amount of data to write
 *
 * Write a block of data to a file descriptor.
 *
 * Return:  -1  Error, something went wrong
 *	     0  Success, all the data was written
 */
static unsigned int write_data(int fd, const char *buffer,
	unsigned int bufsize)
{
	ssize_t result1, result2;

	if (!buffer) {
		errno = EINVAL;
		return -1;
	}

	result1 = write(fd, buffer, bufsize);
	if ((result1 == (ssize_t) bufsize) || (result1 < 0))
		return result1;

	/* Try again with the rest of the buffer */
	buffer  += result1;
	bufsize -= result1;

	result2 = write(fd, buffer, bufsize);
	if (result2 < 0)
		return result1;

	return result1 + result2;
}

/**
 * create_pathname - Create a path/file from some components
 * @dir:      Directory in which to create the file
 * @dir2:     Pathname to give the file (optional)
 * @name:     Filename to give the file (optional)
 * @stream:   Name of the stream (optional)
 * @buffer:   Store the result here
 * @bufsize:  Size of buffer
 *
 * Create a filename from various pieces.  The output will be of the form:
 *	dir/file
 *	dir/file:stream
 *	file
 *	file:stream
 *
 * All the components are optional.  If the name is missing, "unknown" will be
 * used.  If the directory is missing the file will be created in the current
 * directory.  If the stream name is present it will be appended to the
 * filename, delimited by a colon.
 *
 * N.B. If the buffer isn't large enough the name will be truncated.
 *
 * Return:  n  Length of the allocated name
 */
static int create_pathname(const char *dir, const char *dir2, const char *name,
	const char *stream, char *buffer, int bufsize)
{
  char *namel;
  if (name==NULL)
    name = UNKNOWN;
  namel=gen_local_filename(name);
  if(dir2)
  {
    char *dir2l=gen_local_filename(dir2);
    if (stream)
    {
      char *streaml=gen_local_filename(stream);
      snprintf(buffer, bufsize, "%s/%s/%s:%s", dir, dir2l, namel, streaml);
      free(streaml);
    }
    else
      snprintf(buffer, bufsize, "%s/%s/%s", dir, dir2l, namel);
    free(dir2l);
  }
  else
  {
    if (stream)
    {
      char *streaml=gen_local_filename(stream);
      snprintf(buffer, bufsize, "%s/%s:%s", dir, namel, streaml);
      free(streaml);
    }
    else
      snprintf(buffer, bufsize, "%s/%s", dir, namel);
  }
  free(namel);
  return strlen(buffer);
}

/**
 * open_file - Open a file to write to
 * @pathname:  Path, name and stream of the file to open
 *
 * Create a file and return the file descriptor.
 *
 * Existing file will be overwritten.
 *
 * Return:  -1  Error, failed to create the file
 *	     n  Success, this is the file descriptor
 */
static int open_file(const char *pathname)
{
  int fh;
  fh=open(pathname, O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR);
  if(fh != -1 || errno!=ENOENT)
    return fh;
  mkdir_local_for_file(pathname);
  return open(pathname, O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR);
}

/**
 * undelete_file - Recover a deleted file from an NTFS volume
 * @vol:    An ntfs volume obtained from ntfs_mount
 * @inode:  MFT Record number to be recovered
 *
 * Read an MFT Record and try an recover any data associated with it.  Some of
 * the clusters may be in use; these will be filled with zeros or the fill byte
 * supplied in the options.
 *
 * Each data stream will be recovered and saved to a file.  The file's name will
 * be the original filename and it will be written to the current directory.
 * Any named data stream will be saved as filename:streamname.
 *
 * The output file's name and location can be altered by using the command line
 * options.
 *
 * N.B.  We cannot tell if someone has overwritten some of the data since the
 *       file was deleted.
 *
 * Return:  -2  Error, something went wrong
 *	    0  Success, the data was recovered
 */
static int undelete_file(ntfs_volume *vol, uint64_t inode)
{
  char *buffer = NULL;
  unsigned int bufsize;
  struct ufile *file;
  struct td_list_head *item;

  if (!vol)
    return -2;

  /* try to get record */
  file = read_record(vol, inode);
  if (!file || !file->mft) {
    log_error("Can't read info from mft record %llu.\n", (long long unsigned)inode);
    return -2;
  }


  bufsize = vol->cluster_size;
  buffer = (char *)MALLOC(bufsize);

  /* calc_percentage() must be called before 
   * list_record(). Otherwise, when undeleting, a file will always be
   * listed as 0% recoverable even if successfully undeleted. +mabs
   */
  if (file->mft->flags & MFT_RECORD_IN_USE) {
    log_error("Record is in use by the mft\n");
    free(buffer);
    free_file(file);
    return -2;
  }

  if (calc_percentage(file, vol) == 0) {
    log_error("File has no recoverable data.\n");
    goto free;
  }

  if (td_list_empty(&file->data)) {
    log_warning("File has no data.  There is nothing to recover.\n");
    goto free;
  }

  td_list_for_each(item, &file->data) {
    char pathname[256];
    char defname[64];
    char *name;
    struct data *d = td_list_entry(item, struct data, list);
    if(file->pref_name)
    {
      name = file->pref_name;
    }
    else
    {
      sprintf(defname, "inode_%llu", (long long unsigned)file->inode);
      name = defname;
    }

    //dir_data->local_dir;
    create_pathname(opts.dest, file->pref_pname, name, d->name, pathname, sizeof(pathname));
    if (d->resident) {
      int fd;
      fd = open_file(pathname);
      if (fd < 0) {
	log_error("Couldn't create file %s\n", pathname);
	goto free;
      }

      log_verbose("File has resident data.\n");
      if (write_data(fd, (const char *)d->data, d->size_data) < d->size_data) {
	log_error("Write failed\n");
	close(fd);
	goto free;
      }

      if (close(fd) < 0) {
	log_error("Close failed\n");
      }
    } else {
      int i;
      int fd;
      uint64_t cluster_count;	/* I'll need this variable (see below). +mabs */
      runlist_element *rl;
      rl = d->runlist;
      if (!rl) {
	log_verbose("File has no runlist, hence no data.\n");
	continue;
      }

      if (rl[0].length <= 0) {
	log_verbose("File has an empty runlist, hence no data.\n");
	continue;
      }

      fd = open_file(pathname);
      if (fd < 0) {
	log_error("Couldn't create output file %s\n", pathname);
	goto free;
      }

      if (rl[0].lcn == LCN_RL_NOT_MAPPED) {	/* extended mft record */
	uint64_t k;
	log_verbose("Missing segment at beginning, %lld "
	    "clusters.\n",
	    (long long)rl[0].length);
	memset(buffer, 0, bufsize);
	for (k = 0; k < (uint64_t)rl[0].length * vol->cluster_size; k += bufsize) {
	  if (write_data(fd, buffer, bufsize) < bufsize) {
	    log_error("Write failed\n");
	    close(fd);
	    goto free;
	  }
	}
      }

      cluster_count = 0;
      for (i = 0; rl[i].length > 0; i++) {
	uint64_t start, end;
	uint64_t j;

	if (rl[i].lcn == LCN_RL_NOT_MAPPED) {
	  uint64_t k;
	  log_verbose("Missing segment at end, "
	      "%lld clusters.\n",
	      (long long)rl[i].length);
	  memset(buffer, 0, bufsize);
	  for (k = 0; k < (uint64_t)rl[i].length * vol->cluster_size; k += bufsize) {
	    if (write_data(fd, buffer, bufsize) < bufsize) {
	      log_error("Write failed\n");
	      close(fd);
	      goto free;
	    }
	    cluster_count++;
	  }
	  continue;
	}

	if (rl[i].lcn == LCN_HOLE) {
	  uint64_t k;
	  log_verbose("File has a sparse section.\n");
	  memset(buffer, 0, bufsize);
	  for (k = 0; k < (uint64_t)rl[i].length * vol->cluster_size; k += bufsize) {
	    if (write_data(fd, buffer, bufsize) < bufsize) {
	      log_error("Write failed\n");
	      close(fd);
	      goto free;
	    }
	  }
	  continue;
	}

	start = rl[i].lcn;
	end   = rl[i].lcn + rl[i].length;

	for (j = start; j < end; j++)
	{
	  /* Don't check if clusters are in used or not */
#if 0
	  if (utils_cluster_in_use(vol, j) && !opts.optimistic)
	  {
	    memset(buffer, 0, bufsize);
	    if (write_data(fd, buffer, bufsize) < bufsize)
	    {
	      log_error("Write failed\n");
	      close(fd);
	      goto free;
	    }
	  }
	  else
#endif
	  {
	    if (ntfs_cluster_read(vol, j, 1, buffer) < 1) {
	      log_error("Read failed\n");
	      close(fd);
	      goto free;
	    }
	    if (write_data(fd, buffer, bufsize) < bufsize) {
	      log_error("Write failed\n");
	      close(fd);
	      goto free;
	    }
	    cluster_count++;
	  }
	}
      }

      /*
       * IF data stream currently being recovered is
       * non-resident AND data stream has no holes (100% recoverability) AND
       * 0 <= (data->size_alloc - data->size_data) <= vol->cluster_size AND
       * cluster_count * vol->cluster_size == data->size_alloc THEN file
       * currently being written is truncated to data->size_data bytes before
       * it's closed.
       * This multiple checks try to ensure that only files with consistent
       * values of size/occupied clusters are eligible for truncation. Note
       * that resident streams need not be truncated, since the original code
       * already recovers their exact length.                           +mabs
       */
      if (d->percent == 100 && d->size_alloc >= d->size_data &&
	  (d->size_alloc - d->size_data) <= (uint64_t)vol->cluster_size &&
	  cluster_count * (uint64_t)vol->cluster_size == d->size_alloc)
      {
	if (ftruncate(fd, (off_t)d->size_data))
	  log_error("Truncation failed\n");
      }
      else
	log_warning("Truncation not performed because file has an "
	    "inconsistent $MFT record.\n");

      if (close(fd) < 0) {
	log_error("Close failed\n");
      }

    }
    set_date(pathname, file->date, file->date);
  }
  free(buffer);
  free_file(file);
  return 0;
free:
  free(buffer);
  free_file(file);
  return -2;
}

static file_info_t *ufile_to_file_data(const struct ufile *file, const struct data *d)
{
  file_info_t *new_file=(file_info_t *)MALLOC(sizeof(*new_file));
  char inode_name[32];
  const unsigned int len=(file->pref_pname==NULL?0:strlen(file->pref_pname)) +
    (file->pref_name==NULL?sizeof(inode_name):strlen(file->pref_name) + 1) +
    (d->name==NULL?0:strlen(d->name) + 1) + 1;
  sprintf(inode_name, "inode_%llu", (long long unsigned)file->inode);
  new_file->name=(char *)MALLOC(len);
  sprintf(new_file->name, "%s%s%s%s%s",
      (file->pref_pname?file->pref_pname:""),
      (file->pref_pname?"/":""),
      (file->pref_name?file->pref_name:inode_name),
      (d->name?":":""),
      (d->name?d->name:""));
  new_file->st_ino=file->inode;
  new_file->st_mode = (file->directory ?LINUX_S_IFDIR| LINUX_S_IRUGO | LINUX_S_IXUGO:LINUX_S_IFREG | LINUX_S_IRUGO);
  new_file->st_uid=0;
  new_file->st_gid=0;

  new_file->st_size=max(d->size_init, d->size_data);
  new_file->td_atime=new_file->td_ctime=new_file->td_mtime=file->date;
  new_file->status=0;
  return new_file;
}

/**
 * scan_disk - Search an NTFS volume for files that could be undeleted
 * @vol:  An ntfs volume obtained from ntfs_mount
 *
 * Read through all the MFT entries looking for deleted files.  For each one
 * determine how much of the data lies in unused disk space.
 *
 * The list can be filtered by name, size and date, using command line options.
 *
 */
static void scan_disk(ntfs_volume *vol, file_info_t *dir_list)
{
  uint64_t nr_mft_records;
  const unsigned int BUFSIZE = 8192;
  char *buffer = NULL;
  unsigned int results = 0;
  ntfs_attr *attr;
  uint64_t bmpsize;
  uint64_t i;
  struct ufile *file;
  if (!vol)
    return;
#ifdef NTFS_LOG_LEVEL_VERBOSE
  ntfs_log_set_levels(NTFS_LOG_LEVEL_QUIET);
  ntfs_log_set_handler(ntfs_log_handler_stderr);
#endif

  attr = ntfs_attr_open(vol->mft_ni, AT_BITMAP, AT_UNNAMED, 0);
  if (!attr)
  {
    log_error("ERROR: Couldn't open $MFT/$BITMAP\n");
    return;
  }
  bmpsize = attr->initialized_size;

  buffer = (char *) MALLOC(BUFSIZE);

  nr_mft_records = vol->mft_na->initialized_size >>
    vol->mft_record_size_bits;

  for (i = 0; i < bmpsize; i += BUFSIZE) {
    int64_t size;
    unsigned int j;
    uint64_t read_count = min((bmpsize - i), BUFSIZE);
    size = ntfs_attr_pread(attr, i, read_count, buffer);
    if (size < 0)
      break;

    for (j = 0; j < size; j++) {
      unsigned int k;
      unsigned int b;
      b = buffer[j];
      for (k = 0; k < 8; k++, b>>=1)
      {
	unsigned int percent;
	if (((i+j)*8+k) >= nr_mft_records)
	  goto done;
	if (b & 1)
	  continue;
	file = read_record(vol, (i+j)*8+k);
	if (!file) {
	  log_error("Couldn't read MFT Record %llu.\n", (long long unsigned)(i+j)*8+k);
	  continue;
	}

	percent = calc_percentage(file, vol);
	if (percent >0)
	{
	  struct td_list_head *item;
	  td_list_for_each(item, &file->data)
	  {
	    const struct data *d = td_list_entry_const(item, const struct data, list);
	    file_info_t *new_file;
	    new_file=ufile_to_file_data(file, d);
	    if(new_file!=NULL)
	    {
	      td_list_add_tail(&new_file->list, &dir_list->list);
	      results++;
	    }
	  }
	}
	free_file(file);
      }
    }
  }
done:
  log_info("\nFiles with potentially recoverable content: %u\n", results);
  free(buffer);
  ntfs_attr_close(attr);
  td_list_sort(&dir_list->list, filesort);
}

#ifdef HAVE_NCURSES
#define INTER_DIR (LINES-25+16)

static struct td_list_head *ntfs_next_non_deleted(struct td_list_head *current_file, const struct td_list_head *end)
{
  struct td_list_head *walker=current_file;
  while(walker->next!=end)
  {
    const file_info_t *file_info;
    walker=walker->next;
    file_info=td_list_entry_const(walker, const file_info_t, list);
    if((file_info->status&FILE_STATUS_DELETED)==0)
      return walker;
  }
  return current_file;
}

static struct td_list_head *ntfs_prev_non_deleted(struct td_list_head *current_file, const struct td_list_head *start)
{
  struct td_list_head *walker=current_file;
  while(walker->prev!=start)
  {
    const file_info_t *file_info;
    walker=walker->prev;
    file_info=td_list_entry_const(walker, const file_info_t, list);
    if((file_info->status&FILE_STATUS_DELETED)==0)
      return walker;
  }
  return current_file;
}

static void ntfs_undelete_menu_ncurses(disk_t *disk_car, const partition_t *partition, dir_data_t *dir_data, file_info_t *dir_list)
{
  struct ntfs_dir_struct *ls=(struct ntfs_dir_struct *)dir_data->private_dir_data;
  WINDOW *window=(WINDOW*)dir_data->display;
  while(1)
  {
    struct td_list_head *current_file=dir_list->list.next;
    int offset=0;
    int pos_num=0;
    int old_LINES=LINES;
    aff_copy(window);
    wmove(window,3,0);
    aff_part(window,AFF_PART_ORDER|AFF_PART_STATUS,disk_car,partition);
    wmove(window,4,0);
    wprintw(window,"Deleted files\n");
    do
    {
      struct td_list_head *file_walker = NULL;
      int i;
      int car;
      for(i=5; i<=6+INTER_DIR; i++)
      {
	wmove(window, i, 0);
	wclrtoeol(window);	/* before addstr for BSD compatibility */
      }
      i=0;
      td_list_for_each(file_walker,&dir_list->list)
      {
	char		datestr[80];
	file_info_t *file_info;
	file_info=td_list_entry(file_walker, file_info_t, list);
	if((file_info->status&FILE_STATUS_DELETED)!=0)
	  continue;
	if(i++<offset)
	  continue;
	wmove(window, 6-1+i-offset, 0);
	wclrtoeol(window);	/* before addstr for BSD compatibility */
	if(file_walker==current_file)
	{
	  wattrset(window, A_REVERSE);
	  waddstr(window, ">");
	}
	else
	  waddstr(window, " ");
	if((file_info->status&FILE_STATUS_MARKED)!=0 && has_colors())
	  wbkgdset(window,' ' | COLOR_PAIR(2));
	set_date((char *)&datestr, sizeof(datestr), file_info->td_mtime);
	if(COLS <= 1+17+1+9+1)
	  wprintw(window, "%s", file_info->name);
	else
	{
	  const unsigned int nbr=COLS - (1+17+1+11+1);
	  if(strlen(file_info->name) < nbr)
	    wprintw(window, "%-*s", nbr, file_info->name);
	  else
	    wprintw(window, "%-*s", nbr, &file_info->name[strlen(file_info->name) - nbr]);
	}
	wprintw(window, " %s ", datestr);
	wprintw(window, "%11llu", (long long unsigned int)file_info->st_size);
	if((file_info->status&FILE_STATUS_MARKED)!=0 && has_colors())
	  wbkgdset(window,' ' | COLOR_PAIR(0));
	if(file_walker==current_file)
	  wattroff(window, A_REVERSE);
	if(offset+INTER_DIR<=i)
	  break;
      }
      wmove(window, 6-1, 51);
      wclrtoeol(window);
      if(offset>0)
	wprintw(window, "Previous");
      /* Clear the last line, useful if overlapping */
      wmove(window,6+i-offset,0);
      wclrtoeol(window);
      wmove(window, 6+INTER_DIR, 51);
      wclrtoeol(window);
      if(file_walker!=&dir_list->list && file_walker->next!=&dir_list->list)
	wprintw(window, "Next");
      if(td_list_empty(&dir_list->list))
      {
	wmove(window,6,0);
	wprintw(window,"No deleted file found.");
      }
      /* Redraw the bottom of the screen everytime because very long filenames may have corrupt it*/
      mvwaddstr(window,LINES-2,0,"Use ");
      if(!td_list_empty(&dir_list->list))
      {
	if(has_colors())
	  wbkgdset(window,' ' | A_BOLD | COLOR_PAIR(0));
	waddstr(window,":");
	if(has_colors())
	  wbkgdset(window,' ' | COLOR_PAIR(0));
	waddstr(window," to select the current file, ");
	if(has_colors())
	  wbkgdset(window,' ' | A_BOLD | COLOR_PAIR(0));
	waddstr(window,"a");
	if(has_colors())
	  wbkgdset(window,' ' | COLOR_PAIR(0));
	waddstr(window," to select/deselect all files, ");
	if(has_colors())
	  wbkgdset(window,' ' | A_BOLD | COLOR_PAIR(0));
	mvwaddstr(window,LINES-1,4,"C");
	if(has_colors())
	  wbkgdset(window,' ' | COLOR_PAIR(0));
	waddstr(window," to copy the selected files, ");
	if(has_colors())
	  wbkgdset(window,' ' | A_BOLD | COLOR_PAIR(0));
	waddstr(window,"c");
	if(has_colors())
	  wbkgdset(window,' ' | COLOR_PAIR(0));
	waddstr(window," to copy the current file, ");
      }
      if(has_colors())
	wbkgdset(window,' ' | A_BOLD | COLOR_PAIR(0));
      waddstr(window,"q");
      if(has_colors())
	wbkgdset(window,' ' | COLOR_PAIR(0));
      waddstr(window," to quit");
      wrefresh(window);
      /* Using gnome terminal under FC3, TERM=xterm, the screen is not always correct */
      wredrawln(window,0,getmaxy(window));	/* redrawwin def is boggus in pdcur24 */
      car=wgetch(window);
      wmove(window,5,0);
      wclrtoeol(window);
      switch(car)
      {
	case key_ESC:
	case 'q':
	case 'M':
	  return;
      }
      switch(car)
      {
	case KEY_UP:
	case '8':
	  file_walker=ntfs_prev_non_deleted(current_file, &dir_list->list);
	  if(current_file!=file_walker)
	  {
	    current_file=file_walker;
	    pos_num--;
	  }
	  break;
	case KEY_DOWN:
	case '2':
	  file_walker=ntfs_next_non_deleted(current_file, &dir_list->list);
	  if(current_file!=file_walker)
	  {
	    current_file=file_walker;
	    pos_num++;
	  }
	  break;
	case KEY_PPAGE:
	  for(i=0; i<INTER_DIR-1; i++)
	  {
	    file_walker=ntfs_prev_non_deleted(current_file, &dir_list->list);
	    if(current_file!=file_walker)
	    {
	      current_file=file_walker;
	      pos_num--;
	    }
	    else
	      i=INTER_DIR;
	  }
	  break;
	case KEY_NPAGE:
	  for(i=0; i<INTER_DIR-1;  i++)
	  {
	    file_walker=ntfs_next_non_deleted(current_file, &dir_list->list);
	    if(current_file!=file_walker)
	    {
	      current_file=file_walker;
	      pos_num++;
	    }
	    else
	      i=INTER_DIR;
	  }
	  break;
	case 'a':
	  {
	    unsigned int status;
	    file_info_t *file_info;
	    file_info=td_list_entry(current_file, file_info_t, list);
	    status=(file_info->status^FILE_STATUS_MARKED)&FILE_STATUS_MARKED;
	    td_list_for_each(file_walker,&dir_list->list)
	    {
	      file_info=td_list_entry(file_walker, file_info_t, list);
	      if((file_info->status&FILE_STATUS_DELETED)==0 &&
		  (file_info->status & FILE_STATUS_MARKED)!=status)
		file_info->status^=FILE_STATUS_MARKED;
	    }
	  }
	  break;
	case 'f':
	  {
	    const char *needle=ask_string_ncurses("Filename filter ");
	    if(needle!=NULL && needle[0]!='\0')
	    {
	      td_list_for_each(file_walker,&dir_list->list)
	      {
		file_info_t *file_info;
		file_info=td_list_entry(file_walker, file_info_t, list);
		if((file_info->status&FILE_STATUS_DELETED)==0 &&
		    strcasestr(file_info->name, needle)==NULL)
		  file_info->status|=FILE_STATUS_DELETED;
	      }
	      pos_num=0;
	      current_file=ntfs_next_non_deleted(&dir_list->list, &dir_list->list);
	    }
	  }
	  break;
	case 'r':
	  td_list_for_each(file_walker,&dir_list->list)
	  {
	    file_info_t *file_info;
	    file_info=td_list_entry(file_walker, file_info_t, list);
	    file_info->status&=~FILE_STATUS_DELETED;
	  }
	  pos_num=0;
	  current_file=dir_list->list.next;
	  break;
	case 's':
	  {
	    uint64_t min_size=ask_int_ncurses("Minimum file size ");
	    if(min_size>0)
	    {
	      td_list_for_each(file_walker,&dir_list->list)
	      {
		file_info_t *file_info;
		file_info=td_list_entry(file_walker, file_info_t, list);
		if((file_info->status&FILE_STATUS_DELETED)==0 &&
		    file_info->st_size < min_size)
		  file_info->status|=FILE_STATUS_DELETED;
	      }
	      pos_num=0;
	      current_file=ntfs_next_non_deleted(&dir_list->list, &dir_list->list);
	    }
	  }
	  break;
	case ':':
	  {
	    file_info_t *file_info;
	    file_info=td_list_entry(current_file, file_info_t, list);
	    file_info->status^=FILE_STATUS_MARKED;
	    file_walker=ntfs_next_non_deleted(current_file, &dir_list->list);
	    if(current_file!=file_walker)
	    {
	      current_file=file_walker;
	      pos_num++;
	    }
	  }
	  break;
	case 'c':
	  {
	    file_info_t *file_info;
	    file_info=td_list_entry(current_file, file_info_t, list);
	    if(current_file!=&dir_list->list &&
		LINUX_S_ISDIR(file_info->st_mode)==0)
	    {
	      if(dir_data->local_dir==NULL)
	      {
		char *res;
		if(LINUX_S_ISDIR(file_info->st_mode)!=0)
		  res=ask_location("Please select a destination where %s and any files below will be copied.",
		      file_info->name, NULL);
		else
		  res=ask_location("Please select a destination where %s will be copied.",
		      file_info->name, NULL);
		dir_data->local_dir=res;
		opts.dest=res;
	      }
	      if(dir_data->local_dir!=NULL)
	      {
		int res=-1;
		wmove(window,5,0);
		wclrtoeol(window);
		if(has_colors())
		  wbkgdset(window,' ' | A_BOLD | COLOR_PAIR(1));
		wprintw(window,"Copying, please wait...");
		if(has_colors())
		  wbkgdset(window,' ' | COLOR_PAIR(0));
		wrefresh(window);
		res=undelete_file(ls->vol, file_info->st_ino);
		wmove(window,5,0);
		wclrtoeol(window);
		if(res < -1)
		{
		  if(has_colors())
		    wbkgdset(window,' ' | A_BOLD | COLOR_PAIR(1));
		  wprintw(window,"Copy failed!");
		}
		else
		{
		  if(has_colors())
		    wbkgdset(window,' ' | A_BOLD | COLOR_PAIR(2));
		  if(res < 0)
		    wprintw(window,"Copy done! (Failed to copy some files)");
		  else
		    wprintw(window,"Copy done!");
		}
		if(has_colors())
		  wbkgdset(window,' ' | COLOR_PAIR(0));
	      }
	    }
	  }
	  break;
	case 'C':
	  if(dir_data->local_dir==NULL)
	  {
	    char *res;
	    res=ask_location("Please select a destination where the marked files will be copied.", NULL, NULL);
	    dir_data->local_dir=res;
	    opts.dest=res;
	  }
	  if(dir_data->local_dir!=NULL)
	  {
	    unsigned int file_ok=0;
	    unsigned int file_bad=0;
	    if(has_colors())
	      wbkgdset(window,' ' | A_BOLD | COLOR_PAIR(1));
	    wmove(window,5,0);
	    wclrtoeol(window);
	    wprintw(window,"Copying, please wait...");
	    wrefresh(window);
	    td_list_for_each(file_walker,&dir_list->list)
	    {
	      file_info_t *file_info;
	      file_info=td_list_entry(file_walker, file_info_t, list);
	      if((file_info->status&FILE_STATUS_MARKED)!=0)
	      {
		if(undelete_file(ls->vol, file_info->st_ino) < 0)
		  file_bad++;
		else
		{
		  file_info->status^=FILE_STATUS_MARKED;
		  file_ok++;
		  wmove(window,5,0);
		  wclrtoeol(window);
		  wprintw(window,"Copying, please wait... %u files done", file_ok);
		  wrefresh(window);
		}
	      }
	    }
	    if(has_colors())
	      wbkgdset(window,' ' | COLOR_PAIR(0));
	    wmove(window,5,0);
	    wclrtoeol(window);
	    if(file_ok==0)
	    {
	      if(has_colors())
		wbkgdset(window,' ' | A_BOLD | COLOR_PAIR(1));
	      wprintw(window,"Copy failed!");
	    }
	    else
	    {
	      if(has_colors())
		wbkgdset(window,' ' | A_BOLD | COLOR_PAIR(2));
	      wprintw(window,"Copy done! (%u/%u)", file_ok, (file_ok+file_bad));
	    }
	    if(has_colors())
	      wbkgdset(window,' ' | COLOR_PAIR(0));
	  }
	  break;
      }
      if(pos_num<offset)
	offset=pos_num;
      if(pos_num>=offset+INTER_DIR)
	offset=pos_num-INTER_DIR+1;
    } while(old_LINES==LINES);
  }
}
#endif

static void ntfs_undelete_cli(dir_data_t *dir_data, file_info_t *dir_list)
{
  unsigned int file_ok=0;
  unsigned int file_bad=0;
  struct td_list_head *file_walker = NULL;
  struct ntfs_dir_struct *ls=(struct ntfs_dir_struct *)dir_data->private_dir_data;
  char *dst_path;
  dst_path=get_default_location();
  dir_data->local_dir=dst_path;
  opts.dest=dst_path;
  td_list_for_each(file_walker,&dir_list->list)
  {
    const file_info_t *file_info=td_list_entry_const(file_walker, const file_info_t, list);
    if(undelete_file(ls->vol, file_info->st_ino) < 0)
      file_bad++;
    else
      file_ok++;
  }
  log_info("NTFS undelete done (%u/%u)\n", file_ok, (file_ok+file_bad));
  free(dst_path);
  dir_data->local_dir=NULL;
  opts.dest=NULL;
}

static void ntfs_undelete_menu(disk_t *disk_car, const partition_t *partition, dir_data_t *dir_data, file_info_t *dir_list, char**current_cmd)
{
  log_list_file(disk_car, partition, dir_data, dir_list);
  if(*current_cmd!=NULL)
  {
    skip_comma_in_command(current_cmd);
    if(check_command(current_cmd,"allundelete",11)==0)
    {
      ntfs_undelete_cli(dir_data, dir_list);
    }
    return;	/* Quit */
  }
#ifdef HAVE_NCURSES
  ntfs_undelete_menu_ncurses(disk_car, partition, dir_data, dir_list);
#endif
}

int ntfs_undelete_part(disk_t *disk_car, const partition_t *partition, const int verbose, char **current_cmd)
{
  dir_data_t dir_data;
#ifdef HAVE_NCURSES
  WINDOW *window;
#endif
  dir_partition_t res=dir_partition_ntfs_init(disk_car,partition,&dir_data,verbose);
#ifdef HAVE_NCURSES
  window=newwin(LINES, COLS, 0, 0);	/* full screen */
  dir_data.display=window;
  aff_copy(window);
#else
  dir_data.display=NULL;
#endif
  log_info("\n");
  switch(res)
  {
    case DIR_PART_ENOSYS:
      screen_buffer_reset();
#ifdef HAVE_NCURSES
      aff_copy(window);
      wmove(window,4,0);
      aff_part(window,AFF_PART_ORDER|AFF_PART_STATUS,disk_car,partition);
#endif
      log_partition(disk_car,partition);
      screen_buffer_add("Support for this filesystem wasn't enabled during compilation.\n");
      screen_buffer_to_log();
      if(*current_cmd==NULL)
      {
#ifdef HAVE_NCURSES
	screen_buffer_display(window,"",NULL);
#endif
      }
      break;
    case DIR_PART_EIO:
      screen_buffer_reset();
#ifdef HAVE_NCURSES
      aff_copy(window);
      wmove(window,4,0);
      aff_part(window,AFF_PART_ORDER|AFF_PART_STATUS,disk_car,partition);
#endif
      log_partition(disk_car,partition);
      screen_buffer_add("Can't open filesystem. Filesystem seems damaged.\n");
      screen_buffer_to_log();
      if(*current_cmd==NULL)
      {
#ifdef HAVE_NCURSES
	screen_buffer_display(window,"",NULL);
#endif
      }
      break;
    default:
      {
	struct ntfs_dir_struct *ls=(struct ntfs_dir_struct *)dir_data.private_dir_data;
	file_info_t dir_list;
	TD_INIT_LIST_HEAD(&dir_list.list);
	scan_disk(ls->vol, &dir_list);
	ntfs_undelete_menu(disk_car, partition, &dir_data, &dir_list, current_cmd);
	delete_list_file(&dir_list);
	dir_data.close(&dir_data);
      }
      break;
  }
#ifdef HAVE_NCURSES
  delwin(window);
  (void) clearok(stdscr, TRUE);
#ifdef HAVE_TOUCHWIN
  touchwin(stdscr);
#endif
#endif
  return res;
}
#else
int ntfs_undelete_part(disk_t *disk_car, const partition_t *partition, const int verbose, char **current_cmd)
{
#ifdef HAVE_NCURSES
  WINDOW *window;
  window=newwin(LINES, COLS, 0, 0);	/* full screen */
  aff_copy(window);
#endif
  log_info("\n");
  screen_buffer_reset();
#ifdef HAVE_NCURSES
  aff_copy(window);
  wmove(window,4,0);
  aff_part(window,AFF_PART_ORDER|AFF_PART_STATUS,disk_car,partition);
#endif
  log_partition(disk_car,partition);
  screen_buffer_add("Support for this filesystem wasn't enabled during compilation.\n");
  screen_buffer_to_log();
#ifdef HAVE_NCURSES
  if(*current_cmd==NULL)
  {
    screen_buffer_display(window,"",NULL);
  }
  delwin(window);
  (void) clearok(stdscr, TRUE);
#ifdef HAVE_TOUCHWIN
  touchwin(stdscr);
#endif
#endif
  return -2;
}
#endif