Changeset 31 for trunk/lib/regfio.c

Timestamp:

07/16/05 15:05:19 (19 years ago)

Author:

tim

Message:

Added new lightweight stack library

rewrote test program to use this instead of string concatenation/recursion.

File:

• trunk/lib/regfio.c (modified) (8 diffs)

trunk/lib/regfio.c

@@ -37 +37 @@
 
 /*******************************************************************
-*******************************************************************/
+ *******************************************************************/
 static int read_block( REGF_FILE *file, prs_struct *ps, uint32 file_offset, 
                        uint32 block_size )
 {
-        int bytes_read, returned;
-        char *buffer;
-        SMB_STRUCT_STAT sbuf;
-
-        /* check for end of file */
-
-        if ( fstat( file->fd, &sbuf ) ) {
-                DEBUG(0,("read_block: stat() failed! (%s)\n", strerror(errno)));
-                return -1;
-        }
-
-        if ( (size_t)file_offset >= sbuf.st_size )
-                return -1;
-        
-        /* if block_size == 0, we are parsnig HBIN records and need 
-           to read some of the header to get the block_size from there */
+  int bytes_read, returned;
+  char *buffer;
+  SMB_STRUCT_STAT sbuf;
+
+  /* check for end of file */
+
+  if ( fstat( file->fd, &sbuf ) ) {
+    /*DEBUG(0,("read_block: stat() failed! (%s)\n", strerror(errno)));*/
+    return -1;
+  }
+
+  if ( (size_t)file_offset >= sbuf.st_size )
+    return -1;
+        
+  /* if block_size == 0, we are parsnig HBIN records and need 
+     to read some of the header to get the block_size from there */
            
-        if ( block_size == 0 ) {
-                uint8 hdr[0x20];
-
-                if ( lseek( file->fd, file_offset, SEEK_SET ) == -1 ) {
-                        DEBUG(0,("read_block: lseek() failed! (%s)\n", strerror(errno) ));
-                        return -1;
-                }
-
-                returned = read( file->fd, hdr, 0x20 );
-                if ( (returned == -1) || (returned < 0x20) ) {
-                        DEBUG(0,("read_block: failed to read in HBIN header. Is the file corrupt?\n"));
-                        return -1;
-                }
-
-                /* make sure this is an hbin header */
-
-                if ( strncmp( hdr, "hbin", HBIN_HDR_SIZE ) != 0 ) {
-                        DEBUG(0,("read_block: invalid block header!\n"));
-                        return -1;
-                }
-
-                block_size = IVAL( hdr, 0x08 );
-        }
-
-        DEBUG(10,("read_block: block_size == 0x%x\n", block_size ));
-
-        /* set the offset, initialize the buffer, and read the block from disk */
-
-        if ( lseek( file->fd, file_offset, SEEK_SET ) == -1 ) {
-                DEBUG(0,("read_block: lseek() failed! (%s)\n", strerror(errno) ));
-                return -1;
-        }
-        
-        prs_init( ps, block_size, file->mem_ctx, UNMARSHALL );
-        buffer = ps->data_p;
-        bytes_read = returned = 0;
-
-        while ( bytes_read < block_size ) {
-                if ( (returned = read( file->fd, buffer+bytes_read, block_size-bytes_read )) == -1 ) {
-                        DEBUG(0,("read_block: read() failed (%s)\n", strerror(errno) ));
-                        return false;
-                }
-                if ( (returned == 0) && (bytes_read < block_size) ) {
-                        DEBUG(0,("read_block: not a vald registry file ?\n" ));
-                        return false;
-                }       
-                
-                bytes_read += returned;
-        }
-        
-        return bytes_read;
-}
-
-
-/*******************************************************************
-*******************************************************************/
+  if ( block_size == 0 ) {
+    uint8 hdr[0x20];
+
+    if ( lseek( file->fd, file_offset, SEEK_SET ) == -1 ) {
+      /*DEBUG(0,("read_block: lseek() failed! (%s)\n", strerror(errno) ));*/
+      return -1;
+    }
+
+    returned = read( file->fd, hdr, 0x20 );
+    if ( (returned == -1) || (returned < 0x20) ) {
+      /*DEBUG(0,("read_block: failed to read in HBIN header. Is the file corrupt?\n"));*/
+      return -1;
+    }
+
+    /* make sure this is an hbin header */
+
+    if ( strncmp( hdr, "hbin", HBIN_HDR_SIZE ) != 0 ) {
+      /*DEBUG(0,("read_block: invalid block header!\n"));*/
+      return -1;
+    }
+
+    block_size = IVAL( hdr, 0x08 );
+  }
+
+  /*DEBUG(10,("read_block: block_size == 0x%x\n", block_size ));*/
+
+  /* set the offset, initialize the buffer, and read the block from disk */
+
+  if ( lseek( file->fd, file_offset, SEEK_SET ) == -1 ) {
+    /*DEBUG(0,("read_block: lseek() failed! (%s)\n", strerror(errno) ));*/
+    return -1;
+  }
+        
+  prs_init( ps, block_size, file->mem_ctx, UNMARSHALL );
+  buffer = ps->data_p;
+  bytes_read = returned = 0;
+
+  while ( bytes_read < block_size ) {
+    if ( (returned = read( file->fd, buffer+bytes_read, block_size-bytes_read )) == -1 ) {
+      /*DEBUG(0,("read_block: read() failed (%s)\n", strerror(errno) ));*/
+      return false;
+    }
+    if ( (returned == 0) && (bytes_read < block_size) ) {
+      /*DEBUG(0,("read_block: not a vald registry file ?\n" ));*/
+      return false;
+    }   
+                
+    bytes_read += returned;
+  }
+        
+  return bytes_read;
+}
+
+
+/*******************************************************************
+ *******************************************************************/
 static bool prs_regf_block( const char *desc, prs_struct *ps, int depth, REGF_FILE *file )
 {
-        depth++;
-        
-        if ( !prs_uint8s( true, "header", ps, depth, file->header, sizeof( file->header )) )
-                return false;
-        
-        /* yes, these values are always identical so store them only once */
-        
-        if ( !prs_uint32( "unknown1", ps, depth, &file->unknown1 ))
-                return false;
-        if ( !prs_uint32( "unknown1 (again)", ps, depth, &file->unknown1 ))
-                return false;
-
-        /* get the modtime */
-        
-        if ( !prs_set_offset( ps, 0x0c ) )
-                return false;
-        if ( !smb_io_time( "modtime", &file->mtime, ps, depth ) )
-                return false;
-
-        /* constants */
-        
-        if ( !prs_uint32( "unknown2", ps, depth, &file->unknown2 ))
-                return false;
-        if ( !prs_uint32( "unknown3", ps, depth, &file->unknown3 ))
-                return false;
-        if ( !prs_uint32( "unknown4", ps, depth, &file->unknown4 ))
-                return false;
-        if ( !prs_uint32( "unknown5", ps, depth, &file->unknown5 ))
-                return false;
-
-        /* get file offsets */
-        
-        if ( !prs_set_offset( ps, 0x24 ) )
-                return false;
-        if ( !prs_uint32( "data_offset", ps, depth, &file->data_offset ))
-                return false;
-        if ( !prs_uint32( "last_block", ps, depth, &file->last_block ))
-                return false;
-                
-        /* one more constant */
-        
-        if ( !prs_uint32( "unknown6", ps, depth, &file->unknown6 ))
-                return false;
-                
-        /* get the checksum */
-        
-        if ( !prs_set_offset( ps, 0x01fc ) )
-                return false;
-        if ( !prs_uint32( "checksum", ps, depth, &file->checksum ))
-                return false;
-        
-        return true;
-}
-
-
-/*******************************************************************
-*******************************************************************/
+  depth++;
+        
+  if ( !prs_uint8s( true, "header", ps, depth, file->header, sizeof( file->header )) )
+    return false;
+        
+  /* yes, these values are always identical so store them only once */
+        
+  if ( !prs_uint32( "unknown1", ps, depth, &file->unknown1 ))
+    return false;
+  if ( !prs_uint32( "unknown1 (again)", ps, depth, &file->unknown1 ))
+    return false;
+
+  /* get the modtime */
+        
+  if ( !prs_set_offset( ps, 0x0c ) )
+    return false;
+  if ( !smb_io_time( "modtime", &file->mtime, ps, depth ) )
+    return false;
+
+  /* constants */
+        
+  if ( !prs_uint32( "unknown2", ps, depth, &file->unknown2 ))
+    return false;
+  if ( !prs_uint32( "unknown3", ps, depth, &file->unknown3 ))
+    return false;
+  if ( !prs_uint32( "unknown4", ps, depth, &file->unknown4 ))
+    return false;
+  if ( !prs_uint32( "unknown5", ps, depth, &file->unknown5 ))
+    return false;
+
+  /* get file offsets */
+        
+  if ( !prs_set_offset( ps, 0x24 ) )
+    return false;
+  if ( !prs_uint32( "data_offset", ps, depth, &file->data_offset ))
+    return false;
+  if ( !prs_uint32( "last_block", ps, depth, &file->last_block ))
+    return false;
+                
+  /* one more constant */
+        
+  if ( !prs_uint32( "unknown6", ps, depth, &file->unknown6 ))
+    return false;
+                
+  /* get the checksum */
+        
+  if ( !prs_set_offset( ps, 0x01fc ) )
+    return false;
+  if ( !prs_uint32( "checksum", ps, depth, &file->checksum ))
+    return false;
+        
+  return true;
+}
+
+
+/*******************************************************************
+ *******************************************************************/
 static bool prs_hbin_block( const char *desc, prs_struct *ps, int depth, REGF_HBIN *hbin )
 {
-        uint32 block_size2;
-
-        depth++;
-        
-        if ( !prs_uint8s( true, "header", ps, depth, hbin->header, sizeof( hbin->header )) )
-                return false;
-
-        if ( !prs_uint32( "first_hbin_off", ps, depth, &hbin->first_hbin_off ))
-                return false;
-
-        /* The dosreg.cpp comments say that the block size is at 0x1c.
-           According to a WINXP NTUSER.dat file, this is wrong.  The block_size
-           is at 0x08 */
-
-        if ( !prs_uint32( "block_size", ps, depth, &hbin->block_size ))
-                return false;
-
-        block_size2 = hbin->block_size;
-        prs_set_offset( ps, 0x1c );
-        if ( !prs_uint32( "block_size2", ps, depth, &block_size2 ))
-                return false;
-
-        if ( !ps->io )
-                hbin->dirty = true;
-        
-
-        return true;
-}
-
-
-/*******************************************************************
-*******************************************************************/
+  uint32 block_size2;
+
+  depth++;
+        
+  if ( !prs_uint8s( true, "header", ps, depth, hbin->header, sizeof( hbin->header )) )
+    return false;
+
+  if ( !prs_uint32( "first_hbin_off", ps, depth, &hbin->first_hbin_off ))
+    return false;
+
+  /* The dosreg.cpp comments say that the block size is at 0x1c.
+     According to a WINXP NTUSER.dat file, this is wrong.  The block_size
+     is at 0x08 */
+
+  if ( !prs_uint32( "block_size", ps, depth, &hbin->block_size ))
+    return false;
+
+  block_size2 = hbin->block_size;
+  prs_set_offset( ps, 0x1c );
+  if ( !prs_uint32( "block_size2", ps, depth, &block_size2 ))
+    return false;
+
+  if ( !ps->io )
+    hbin->dirty = true;
+        
+
+  return true;
+}
+
+
+/*******************************************************************
+ *******************************************************************/
 static bool prs_nk_rec( const char *desc, prs_struct *ps, int depth, REGF_NK_REC *nk )
 {
-        uint16 class_length, name_length;
-        uint32 start;
-        uint32 data_size, start_off, end_off;
-        uint32 unknown_off = REGF_OFFSET_NONE;
-
-        nk->hbin_off = ps->data_offset;
-        start = nk->hbin_off;
-        
-        depth++;
-        
-        /* back up and get the data_size */
-        
-        if ( !prs_set_offset( ps, ps->data_offset-sizeof(uint32)) )
-                return false;
-        start_off = ps->data_offset;
-        if ( !prs_uint32( "rec_size", ps, depth, &nk->rec_size ))
-                return false;
-        
-        if ( !prs_uint8s( true, "header", ps, depth, nk->header, sizeof( nk->header )) )
-                return false;
-                
-        if ( !prs_uint16( "key_type", ps, depth, &nk->key_type ))
-                return false;
-        if ( !smb_io_time( "mtime", &nk->mtime, ps, depth ))
-                return false;
-                
-        if ( !prs_set_offset( ps, start+0x0010 ) )
-                return false;
-        if ( !prs_uint32( "parent_off", ps, depth, &nk->parent_off ))
-                return false;
-        if ( !prs_uint32( "num_subkeys", ps, depth, &nk->num_subkeys ))
-                return false;
-                
-        if ( !prs_set_offset( ps, start+0x001c ) )
-                return false;
-        if ( !prs_uint32( "subkeys_off", ps, depth, &nk->subkeys_off ))
-                return false;
-        if ( !prs_uint32( "unknown_off", ps, depth, &unknown_off) )
-                return false;
-                
-        if ( !prs_set_offset( ps, start+0x0024 ) )
-                return false;
-        if ( !prs_uint32( "num_values", ps, depth, &nk->num_values ))
-                return false;
-        if ( !prs_uint32( "values_off", ps, depth, &nk->values_off ))
-                return false;
-        if ( !prs_uint32( "sk_off", ps, depth, &nk->sk_off ))
-                return false;
-        if ( !prs_uint32( "classname_off", ps, depth, &nk->classname_off ))
-                return false;
-
-        if ( !prs_uint32( "max_bytes_subkeyname", ps, depth, &nk->max_bytes_subkeyname))
-                return false;
-        if ( !prs_uint32( "max_bytes_subkeyclassname", ps, depth, &nk->max_bytes_subkeyclassname))
-                return false;
-        if ( !prs_uint32( "max_bytes_valuename", ps, depth, &nk->max_bytes_valuename))
-                return false;
-        if ( !prs_uint32( "max_bytes_value", ps, depth, &nk->max_bytes_value))
-                return false;
-        if ( !prs_uint32( "unknown index", ps, depth, &nk->unk_index))
-                return false;
-
-        name_length = nk->keyname ? strlen(nk->keyname) : 0 ;
-        class_length = nk->classname ? strlen(nk->classname) : 0 ;
-        if ( !prs_uint16( "name_length", ps, depth, &name_length ))
-                return false;
-        if ( !prs_uint16( "class_length", ps, depth, &class_length ))
-                return false;   
-                
-        if ( class_length ) {
-                ;;
-        }
-        
-        if ( name_length ) {
-                if ( ps->io ) {
-                  if ( !(nk->keyname = (char*)zcalloc(sizeof(char), name_length+1 )) )
-                                return false;
-                }
-
-                if ( !prs_uint8s( true, "name", ps, depth, nk->keyname, name_length) )
-                        return false;
-
-                if ( ps->io ) 
-                        nk->keyname[name_length] = '\0';
-        }
-
-        end_off = ps->data_offset;
-
-        /* data_size must be divisible by 8 and large enough to hold the original record */
-
-        data_size = ((start_off - end_off) & 0xfffffff8 );
-        if ( data_size > nk->rec_size )
-                DEBUG(10,("Encountered reused record (0x%x < 0x%x)\n", data_size, nk->rec_size));
-
-        if ( !ps->io )
-                nk->hbin->dirty = true;
-
-        return true;
-}
-
-
-/*******************************************************************
-*******************************************************************/
+  uint16 class_length, name_length;
+  uint32 start;
+  uint32 data_size, start_off, end_off;
+  uint32 unknown_off = REGF_OFFSET_NONE;
+
+  nk->hbin_off = ps->data_offset;
+  start = nk->hbin_off;
+        
+  depth++;
+        
+  /* back up and get the data_size */
+        
+  if ( !prs_set_offset( ps, ps->data_offset-sizeof(uint32)) )
+    return false;
+  start_off = ps->data_offset;
+  if ( !prs_uint32( "rec_size", ps, depth, &nk->rec_size ))
+    return false;
+        
+  if ( !prs_uint8s( true, "header", ps, depth, nk->header, sizeof( nk->header )) )
+    return false;
+                
+  if ( !prs_uint16( "key_type", ps, depth, &nk->key_type ))
+    return false;
+  if ( !smb_io_time( "mtime", &nk->mtime, ps, depth ))
+    return false;
+                
+  if ( !prs_set_offset( ps, start+0x0010 ) )
+    return false;
+  if ( !prs_uint32( "parent_off", ps, depth, &nk->parent_off ))
+    return false;
+  if ( !prs_uint32( "num_subkeys", ps, depth, &nk->num_subkeys ))
+    return false;
+                
+  if ( !prs_set_offset( ps, start+0x001c ) )
+    return false;
+  if ( !prs_uint32( "subkeys_off", ps, depth, &nk->subkeys_off ))
+    return false;
+  if ( !prs_uint32( "unknown_off", ps, depth, &unknown_off) )
+    return false;
+                
+  if ( !prs_set_offset( ps, start+0x0024 ) )
+    return false;
+  if ( !prs_uint32( "num_values", ps, depth, &nk->num_values ))
+    return false;
+  if ( !prs_uint32( "values_off", ps, depth, &nk->values_off ))
+    return false;
+  if ( !prs_uint32( "sk_off", ps, depth, &nk->sk_off ))
+    return false;
+  if ( !prs_uint32( "classname_off", ps, depth, &nk->classname_off ))
+    return false;
+
+  if ( !prs_uint32( "max_bytes_subkeyname", ps, depth, &nk->max_bytes_subkeyname))
+    return false;
+  if ( !prs_uint32( "max_bytes_subkeyclassname", ps, depth, &nk->max_bytes_subkeyclassname))
+    return false;
+  if ( !prs_uint32( "max_bytes_valuename", ps, depth, &nk->max_bytes_valuename))
+    return false;
+  if ( !prs_uint32( "max_bytes_value", ps, depth, &nk->max_bytes_value))
+    return false;
+  if ( !prs_uint32( "unknown index", ps, depth, &nk->unk_index))
+    return false;
+
+  name_length = nk->keyname ? strlen(nk->keyname) : 0 ;
+  class_length = nk->classname ? strlen(nk->classname) : 0 ;
+  if ( !prs_uint16( "name_length", ps, depth, &name_length ))
+    return false;
+  if ( !prs_uint16( "class_length", ps, depth, &class_length ))
+    return false;       
+                
+  if ( class_length ) {
+    ;;
+  }
+        
+  if ( name_length ) {
+    if ( ps->io ) {
+      if ( !(nk->keyname = (char*)zcalloc(sizeof(char), name_length+1 )) )
+        return false;
+    }
+
+    if ( !prs_uint8s( true, "name", ps, depth, nk->keyname, name_length) )
+      return false;
+
+    if ( ps->io ) 
+      nk->keyname[name_length] = '\0';
+  }
+
+  end_off = ps->data_offset;
+
+  /* data_size must be divisible by 8 and large enough to hold the original record */
+
+  data_size = ((start_off - end_off) & 0xfffffff8 );
+  if ( data_size > nk->rec_size )
+    /*DEBUG(10,("Encountered reused record (0x%x < 0x%x)\n", data_size, nk->rec_size));*/
+
+    if ( !ps->io )
+      nk->hbin->dirty = true;
+
+  return true;
+}
+
+
+/*******************************************************************
+ *******************************************************************/
 static uint32 regf_block_checksum( prs_struct *ps )
 {
-        char *buffer = ps->data_p;
-        uint32 checksum, x;
-        int i;
-
-        /* XOR of all bytes 0x0000 - 0x01FB */
-                
-        checksum = x = 0;
-        
-        for ( i=0; i<0x01FB; i+=4 ) {
-                x = IVAL(buffer, i );
-                checksum ^= x;
-        }
-        
-        return checksum;
-}
-
-
-/*******************************************************************
-*******************************************************************/
+  char *buffer = ps->data_p;
+  uint32 checksum, x;
+  int i;
+
+  /* XOR of all bytes 0x0000 - 0x01FB */
+                
+  checksum = x = 0;
+        
+  for ( i=0; i<0x01FB; i+=4 ) {
+    x = IVAL(buffer, i );
+    checksum ^= x;
+  }
+        
+  return checksum;
+}
+
+
+/*******************************************************************
+ *******************************************************************/
 static bool read_regf_block( REGF_FILE *file )
 {
-        prs_struct ps;
-        uint32 checksum;
-        
-        /* grab the first block from the file */
-                
-        if ( read_block( file, &ps, 0, REGF_BLOCKSIZE ) == -1 )
-                return false;
-        
-        /* parse the block and verify the checksum */
-        
-        if ( !prs_regf_block( "regf_header", &ps, 0, file ) )
-                return false;   
-                
-        checksum = regf_block_checksum( &ps );
-        
-        if(ps.is_dynamic)
-          SAFE_FREE(ps.data_p);
-        ps.is_dynamic = false;
-        ps.buffer_size = 0;
-        ps.data_offset = 0;
-
-        if ( file->checksum !=  checksum ) {
-                DEBUG(0,("read_regf_block: invalid checksum\n" ));
-                return false;
-        }
-
-        return true;
-}
-
-
-/*******************************************************************
-*******************************************************************/
+  prs_struct ps;
+  uint32 checksum;
+        
+  /* grab the first block from the file */
+                
+  if ( read_block( file, &ps, 0, REGF_BLOCKSIZE ) == -1 )
+    return false;
+        
+  /* parse the block and verify the checksum */
+        
+  if ( !prs_regf_block( "regf_header", &ps, 0, file ) )
+    return false;       
+                
+  checksum = regf_block_checksum( &ps );
+        
+  if(ps.is_dynamic)
+    SAFE_FREE(ps.data_p);
+  ps.is_dynamic = false;
+  ps.buffer_size = 0;
+  ps.data_offset = 0;
+
+  if ( file->checksum !=  checksum ) {
+    /*DEBUG(0,("read_regf_block: invalid checksum\n" ));*/
+    return false;
+  }
+
+  return true;
+}
+
+
+/*******************************************************************
+ *******************************************************************/
 static REGF_HBIN* read_hbin_block( REGF_FILE *file, off_t offset )
 {
-        REGF_HBIN *hbin;
-        uint32 record_size, curr_off, block_size, header;
-        
-        if ( !(hbin = (REGF_HBIN*)zalloc(sizeof(REGF_HBIN))) ) 
-                return NULL;
-        hbin->file_off = offset;
-        hbin->free_off = -1;
-                
-        if ( read_block( file, &hbin->ps, offset, 0 ) == -1 )
-                return NULL;
-        
-        if ( !prs_hbin_block( "hbin", &hbin->ps, 0, hbin ) )
-                return NULL;    
-
-        /* this should be the same thing as hbin->block_size but just in case */
-
-        block_size = hbin->ps.buffer_size;
-
-        /* Find the available free space offset.  Always at the end,
-           so walk the record list and stop when you get to the end.
-           The end is defined by a record header of 0xffffffff.  The 
-           previous 4 bytes contains the amount of free space remaining 
-           in the hbin block. */
-
-        /* remember that the record_size is in the 4 bytes preceeding the record itself */
-
-        if ( !prs_set_offset( &hbin->ps, file->data_offset+HBIN_HDR_SIZE-sizeof(uint32) ) )
-                return false;
-
-        record_size = 0;
-        curr_off = hbin->ps.data_offset;
-        while ( header != 0xffffffff ) {
-                /* not done yet so reset the current offset to the 
-                   next record_size field */
-
-                curr_off = curr_off+record_size;
-
-                /* for some reason the record_size of the last record in
-                   an hbin block can extend past the end of the block
-                   even though the record fits within the remaining 
-                   space....aaarrrgggghhhhhh */
-
-                if ( curr_off >= block_size ) {
-                        record_size = -1;
-                        curr_off = -1;
-                        break;
-                }
-
-                if ( !prs_set_offset( &hbin->ps, curr_off) )
-                        return false;
-
-                if ( !prs_uint32( "rec_size", &hbin->ps, 0, &record_size ) )
-                        return false;
-                if ( !prs_uint32( "header", &hbin->ps, 0, &header ) )
-                        return false;
-                
-                assert( record_size != 0 );
-
-                if ( record_size & 0x80000000 ) {
-                        /* absolute_value(record_size) */
-                        record_size = (record_size ^ 0xffffffff) + 1;
-                }
-        }
-
-        /* save the free space offset */
-
-        if ( header == 0xffffffff ) {
-
-                /* account for the fact that the curr_off is 4 bytes behind the actual 
-                   record header */
-
-                hbin->free_off = curr_off + sizeof(uint32);
-                hbin->free_size = record_size;
-        }
-
-        DEBUG(10,("read_hbin_block: free space offset == 0x%x\n", hbin->free_off));
-
-        if ( !prs_set_offset( &hbin->ps, file->data_offset+HBIN_HDR_SIZE )  )
-                return false;
-        
-        return hbin;
+  REGF_HBIN *hbin;
+  uint32 record_size, curr_off, block_size, header;
+        
+  if ( !(hbin = (REGF_HBIN*)zalloc(sizeof(REGF_HBIN))) ) 
+    return NULL;
+  hbin->file_off = offset;
+  hbin->free_off = -1;
+                
+  if ( read_block( file, &hbin->ps, offset, 0 ) == -1 )
+    return NULL;
+        
+  if ( !prs_hbin_block( "hbin", &hbin->ps, 0, hbin ) )
+    return NULL;        
+
+  /* this should be the same thing as hbin->block_size but just in case */
+
+  block_size = hbin->ps.buffer_size;
+
+  /* Find the available free space offset.  Always at the end,
+     so walk the record list and stop when you get to the end.
+     The end is defined by a record header of 0xffffffff.  The 
+     previous 4 bytes contains the amount of free space remaining 
+     in the hbin block. */
+
+  /* remember that the record_size is in the 4 bytes preceeding the record itself */
+
+  if ( !prs_set_offset( &hbin->ps, file->data_offset+HBIN_HDR_SIZE-sizeof(uint32) ) )
+    return false;
+
+  record_size = 0;
+  curr_off = hbin->ps.data_offset;
+  while ( header != 0xffffffff ) {
+    /* not done yet so reset the current offset to the 
+       next record_size field */
+
+    curr_off = curr_off+record_size;
+
+    /* for some reason the record_size of the last record in
+       an hbin block can extend past the end of the block
+       even though the record fits within the remaining 
+       space....aaarrrgggghhhhhh */
+
+    if ( curr_off >= block_size ) {
+      record_size = -1;
+      curr_off = -1;
+      break;
+    }
+
+    if ( !prs_set_offset( &hbin->ps, curr_off) )
+      return false;
+
+    if ( !prs_uint32( "rec_size", &hbin->ps, 0, &record_size ) )
+      return false;
+    if ( !prs_uint32( "header", &hbin->ps, 0, &header ) )
+      return false;
+                
+    assert( record_size != 0 );
+
+    if ( record_size & 0x80000000 ) {
+      /* absolute_value(record_size) */
+      record_size = (record_size ^ 0xffffffff) + 1;
+    }
+  }
+
+  /* save the free space offset */
+
+  if ( header == 0xffffffff ) {
+
+    /* account for the fact that the curr_off is 4 bytes behind the actual 
+       record header */
+
+    hbin->free_off = curr_off + sizeof(uint32);
+    hbin->free_size = record_size;
+  }
+
+  /*DEBUG(10,("read_hbin_block: free space offset == 0x%x\n", hbin->free_off));*/
+
+  if ( !prs_set_offset( &hbin->ps, file->data_offset+HBIN_HDR_SIZE )  )
+    return false;
+        
+  return hbin;
 }
 
@@ -459 +459 @@
 static bool hbin_contains_offset( REGF_HBIN *hbin, uint32 offset )
 {
-        if ( !hbin )
-                return false;
-        
-        if ( (offset > hbin->first_hbin_off) && (offset < (hbin->first_hbin_off+hbin->block_size)) )
-                return true;
-                
-        return false;
+  if ( !hbin )
+    return false;
+        
+  if ( (offset > hbin->first_hbin_off) && (offset < (hbin->first_hbin_off+hbin->block_size)) )
+    return true;
+                
+  return false;
 }
 
@@ -475 +475 @@
 static REGF_HBIN* lookup_hbin_block( REGF_FILE *file, uint32 offset )
 {
-        REGF_HBIN *hbin = NULL;
-        uint32 block_off;
-
-        /* start with the open list */
-
-        for ( hbin=file->block_list; hbin; hbin=hbin->next ) {
-                DEBUG(10,("lookup_hbin_block: address = 0x%x [0x%x]\n", hbin->file_off, (uint32)hbin ));
-                if ( hbin_contains_offset( hbin, offset ) )
-                        return hbin;
-        }
-        
-        if ( !hbin ) {
-                /* start at the beginning */
-
-                block_off = REGF_BLOCKSIZE;
-                do {
-                        /* cleanup before the next round */
-                        if ( hbin )
-                        {
-                          if(hbin->ps.is_dynamic)
-                            SAFE_FREE(hbin->ps.data_p);
-                          hbin->ps.is_dynamic = false;
-                          hbin->ps.buffer_size = 0;
-                          hbin->ps.data_offset = 0;
-                        }
-
-                        hbin = read_hbin_block( file, block_off );
-
-                        if ( hbin ) 
-                                block_off = hbin->file_off + hbin->block_size;
-
-                } while ( hbin && !hbin_contains_offset( hbin, offset ) );
-        }
-
-        if ( hbin )
-                DLIST_ADD( file->block_list, hbin );
-
-        return hbin;
-}
-
-
-/*******************************************************************
-*******************************************************************/
+  REGF_HBIN *hbin = NULL;
+  uint32 block_off;
+
+  /* start with the open list */
+
+  for ( hbin=file->block_list; hbin; hbin=hbin->next ) {
+    /* DEBUG(10,("lookup_hbin_block: address = 0x%x [0x%x]\n", hbin->file_off, (uint32)hbin ));*/
+    if ( hbin_contains_offset( hbin, offset ) )
+      return hbin;
+  }
+        
+  if ( !hbin ) {
+    /* start at the beginning */
+
+    block_off = REGF_BLOCKSIZE;
+    do {
+      /* cleanup before the next round */
+      if ( hbin )
+      {
+        if(hbin->ps.is_dynamic)
+          SAFE_FREE(hbin->ps.data_p);
+        hbin->ps.is_dynamic = false;
+        hbin->ps.buffer_size = 0;
+        hbin->ps.data_offset = 0;
+      }
+
+      hbin = read_hbin_block( file, block_off );
+
+      if ( hbin ) 
+        block_off = hbin->file_off + hbin->block_size;
+
+    } while ( hbin && !hbin_contains_offset( hbin, offset ) );
+  }
+
+  if ( hbin )
+    DLIST_ADD( file->block_list, hbin );
+
+  return hbin;
+}
+
+
+/*******************************************************************
+ *******************************************************************/
 static bool prs_hash_rec( const char *desc, prs_struct *ps, int depth, REGF_HASH_REC *hash )
 {
-        depth++;
-
-        if ( !prs_uint32( "nk_off", ps, depth, &hash->nk_off ))
-                return false;
-        if ( !prs_uint8s( true, "keycheck", ps, depth, hash->keycheck, sizeof( hash->keycheck )) )
-                return false;
-        
-        return true;
-}
-
-
-/*******************************************************************
-*******************************************************************/
+  depth++;
+
+  if ( !prs_uint32( "nk_off", ps, depth, &hash->nk_off ))
+    return false;
+  if ( !prs_uint8s( true, "keycheck", ps, depth, hash->keycheck, sizeof( hash->keycheck )) )
+    return false;
+        
+  return true;
+}
+
+
+/*******************************************************************
+ *******************************************************************/
 static bool hbin_prs_lf_records( const char *desc, REGF_HBIN *hbin, int depth, REGF_NK_REC *nk )
 {
-        int i;
-        REGF_LF_REC *lf = &nk->subkeys;
-        uint32 data_size, start_off, end_off;
-
-        depth++;
-
-        /* check if we have anything to do first */
-        
-        if ( nk->num_subkeys == 0 )
-                return true;
-
-        /* move to the LF record */
-
-        if ( !prs_set_offset( &hbin->ps, nk->subkeys_off + HBIN_HDR_SIZE - hbin->first_hbin_off ) )
-                return false;
-
-        /* backup and get the data_size */
-        
-        if ( !prs_set_offset( &hbin->ps, hbin->ps.data_offset-sizeof(uint32)) )
-                return false;
-        start_off = hbin->ps.data_offset;
-        if ( !prs_uint32( "rec_size", &hbin->ps, depth, &lf->rec_size ))
-                return false;
-
-        if ( !prs_uint8s( true, "header", &hbin->ps, depth, lf->header, sizeof( lf->header )) )
-                return false;
-                
-        if ( !prs_uint16( "num_keys", &hbin->ps, depth, &lf->num_keys))
-                return false;
-
-        if ( hbin->ps.io ) {
-          if ( !(lf->hashes = (REGF_HASH_REC*)zcalloc(sizeof(REGF_HASH_REC), lf->num_keys )) )
-                        return false;
-        }
-
-        for ( i=0; i<lf->num_keys; i++ ) {
-                if ( !prs_hash_rec( "hash_rec", &hbin->ps, depth, &lf->hashes[i] ) )
-                        return false;
-        }
-
-        end_off = hbin->ps.data_offset;
-
-        /* data_size must be divisible by 8 and large enough to hold the original record */
-
-        data_size = ((start_off - end_off) & 0xfffffff8 );
-        if ( data_size > lf->rec_size )
-                DEBUG(10,("Encountered reused record (0x%x < 0x%x)\n", data_size, lf->rec_size));
-
-        if ( !hbin->ps.io )
-                hbin->dirty = true;
-
-        return true;
-}
-
-
-/*******************************************************************
-*******************************************************************/
+  int i;
+  REGF_LF_REC *lf = &nk->subkeys;
+  uint32 data_size, start_off, end_off;
+
+  depth++;
+
+  /* check if we have anything to do first */
+        
+  if ( nk->num_subkeys == 0 )
+    return true;
+
+  /* move to the LF record */
+
+  if ( !prs_set_offset( &hbin->ps, nk->subkeys_off + HBIN_HDR_SIZE - hbin->first_hbin_off ) )
+    return false;
+
+  /* backup and get the data_size */
+        
+  if ( !prs_set_offset( &hbin->ps, hbin->ps.data_offset-sizeof(uint32)) )
+    return false;
+  start_off = hbin->ps.data_offset;
+  if ( !prs_uint32( "rec_size", &hbin->ps, depth, &lf->rec_size ))
+    return false;
+
+  if ( !prs_uint8s( true, "header", &hbin->ps, depth, lf->header, sizeof( lf->header )) )
+    return false;
+                
+  if ( !prs_uint16( "num_keys", &hbin->ps, depth, &lf->num_keys))
+    return false;
+
+  if ( hbin->ps.io ) {
+    if ( !(lf->hashes = (REGF_HASH_REC*)zcalloc(sizeof(REGF_HASH_REC), lf->num_keys )) )
+      return false;
+  }
+
+  for ( i=0; i<lf->num_keys; i++ ) {
+    if ( !prs_hash_rec( "hash_rec", &hbin->ps, depth, &lf->hashes[i] ) )
+      return false;
+  }
+
+  end_off = hbin->ps.data_offset;
+
+  /* data_size must be divisible by 8 and large enough to hold the original record */
+
+  data_size = ((start_off - end_off) & 0xfffffff8 );
+  if ( data_size > lf->rec_size )
+    /*DEBUG(10,("Encountered reused record (0x%x < 0x%x)\n", data_size, lf->rec_size));*/
+
+    if ( !hbin->ps.io )
+      hbin->dirty = true;
+
+  return true;
+}
+
+
+/*******************************************************************
+ *******************************************************************/
 static bool hbin_prs_sk_rec( const char *desc, REGF_HBIN *hbin, int depth, REGF_SK_REC *sk )
 {
-        prs_struct *ps = &hbin->ps;
-        uint16 tag = 0xFFFF;
-        uint32 data_size, start_off, end_off;
-
-
-        depth++;
-
-        if ( !prs_set_offset( &hbin->ps, sk->sk_off + HBIN_HDR_SIZE - hbin->first_hbin_off ) )
-                return false;
-
-        /* backup and get the data_size */
-        
-        if ( !prs_set_offset( &hbin->ps, hbin->ps.data_offset-sizeof(uint32)) )
-                return false;
-        start_off = hbin->ps.data_offset;
-        if ( !prs_uint32( "rec_size", &hbin->ps, depth, &sk->rec_size ))
-                return false;
-
-        if ( !prs_uint8s( true, "header", ps, depth, sk->header, sizeof( sk->header )) )
-                return false;
-        if ( !prs_uint16( "tag", ps, depth, &tag))
-                return false;
-
-        if ( !prs_uint32( "prev_sk_off", ps, depth, &sk->prev_sk_off))
-                return false;
-        if ( !prs_uint32( "next_sk_off", ps, depth, &sk->next_sk_off))
-                return false;
-        if ( !prs_uint32( "ref_count", ps, depth, &sk->ref_count))
-                return false;
-        if ( !prs_uint32( "size", ps, depth, &sk->size))
-                return false;
-
-        if ( !sec_io_desc( "sec_desc", &sk->sec_desc, ps, depth )) 
-                return false;
-
-        end_off = hbin->ps.data_offset;
-
-        /* data_size must be divisible by 8 and large enough to hold the original record */
-
-        data_size = ((start_off - end_off) & 0xfffffff8 );
-        if ( data_size > sk->rec_size )
-                DEBUG(10,("Encountered reused record (0x%x < 0x%x)\n", data_size, sk->rec_size));
-
-        if ( !hbin->ps.io )
-                hbin->dirty = true;
-
-        return true;
-}
-
-
-/*******************************************************************
-*******************************************************************/
+  prs_struct *ps = &hbin->ps;
+  uint16 tag = 0xFFFF;
+  uint32 data_size, start_off, end_off;
+
+
+  depth++;
+
+  if ( !prs_set_offset( &hbin->ps, sk->sk_off + HBIN_HDR_SIZE - hbin->first_hbin_off ) )
+    return false;
+
+  /* backup and get the data_size */
+        
+  if ( !prs_set_offset( &hbin->ps, hbin->ps.data_offset-sizeof(uint32)) )
+    return false;
+  start_off = hbin->ps.data_offset;
+  if ( !prs_uint32( "rec_size", &hbin->ps, depth, &sk->rec_size ))
+    return false;
+
+  if ( !prs_uint8s( true, "header", ps, depth, sk->header, sizeof( sk->header )) )
+    return false;
+  if ( !prs_uint16( "tag", ps, depth, &tag))
+    return false;
+
+  if ( !prs_uint32( "prev_sk_off", ps, depth, &sk->prev_sk_off))
+    return false;
+  if ( !prs_uint32( "next_sk_off", ps, depth, &sk->next_sk_off))
+    return false;
+  if ( !prs_uint32( "ref_count", ps, depth, &sk->ref_count))
+    return false;
+  if ( !prs_uint32( "size", ps, depth, &sk->size))
+    return false;
+
+  if ( !sec_io_desc( "sec_desc", &sk->sec_desc, ps, depth )) 
+    return false;
+
+  end_off = hbin->ps.data_offset;
+
+  /* data_size must be divisible by 8 and large enough to hold the original record */
+
+  data_size = ((start_off - end_off) & 0xfffffff8 );
+  if ( data_size > sk->rec_size )
+    /*DEBUG(10,("Encountered reused record (0x%x < 0x%x)\n", data_size, sk->rec_size));*/
+
+    if ( !hbin->ps.io )
+      hbin->dirty = true;
+
+  return true;
+}
+
+
+/*******************************************************************
+ *******************************************************************/
 static bool hbin_prs_vk_rec( const char *desc, REGF_HBIN *hbin, int depth, 
                              REGF_VK_REC *vk, REGF_FILE *file )
 {
-        uint32 offset;
-        uint16 name_length;
-        prs_struct *ps = &hbin->ps;
-        uint32 data_size, start_off, end_off;
-
-        depth++;
-
-        /* backup and get the data_size */
-        
-        if ( !prs_set_offset( &hbin->ps, hbin->ps.data_offset-sizeof(uint32)) )
-                return false;
-        start_off = hbin->ps.data_offset;
-        if ( !prs_uint32( "rec_size", &hbin->ps, depth, &vk->rec_size ))
-                return false;
-
-        if ( !prs_uint8s( true, "header", ps, depth, vk->header, sizeof( vk->header )) )
-                return false;
-
-        if ( !hbin->ps.io )
-                name_length = strlen(vk->valuename);
-
-        if ( !prs_uint16( "name_length", ps, depth, &name_length ))
-                return false;
-        if ( !prs_uint32( "data_size", ps, depth, &vk->data_size ))
-                return false;
-        if ( !prs_uint32( "data_off", ps, depth, &vk->data_off ))
-                return false;
-        if ( !prs_uint32( "type", ps, depth, &vk->type))
-                return false;
-        if ( !prs_uint16( "flag", ps, depth, &vk->flag))
-                return false;
-
-        offset = ps->data_offset;
-        offset += 2;    /* skip 2 bytes */
-        prs_set_offset( ps, offset );
-
-        /* get the name */
-
-        if ( vk->flag&VK_FLAG_NAME_PRESENT ) {
-
-                if ( hbin->ps.io ) {
-                  if ( !(vk->valuename = (char*)zcalloc(sizeof(char), name_length+1 )))
-                                return false;
-                }
-                if ( !prs_uint8s( true, "name", ps, depth, vk->valuename, name_length ) )
-                        return false;
-        }
-
-        end_off = hbin->ps.data_offset;
-
-        /* get the data if necessary */
-
-        if ( vk->data_size != 0 ) {
-                bool charmode = false;
-
-                if ( (vk->type == REG_SZ) || (vk->type == REG_MULTI_SZ) )
-                        charmode = true;
-
-                /* the data is stored in the offset if the size <= 4 */
-
-                if ( !(vk->data_size & VK_DATA_IN_OFFSET) ) {
-                        REGF_HBIN *hblock = hbin;
-                        uint32 data_rec_size;
-
-                        if ( hbin->ps.io ) {
-                          if ( !(vk->data = (uint8*)zcalloc(sizeof(uint8), vk->data_size) ) )
-                                        return false;
-                        }
-
-                        /* this data can be in another hbin */
-                        if ( !hbin_contains_offset( hbin, vk->data_off ) ) {
-                                if ( !(hblock = lookup_hbin_block( file, vk->data_off )) )
-                                        return false;
-                        }
-                        if ( !(prs_set_offset( &hblock->ps, (vk->data_off+HBIN_HDR_SIZE-hblock->first_hbin_off)-sizeof(uint32) )) )
-                                return false;
-
-                        if ( !hblock->ps.io ) {
-                                data_rec_size = ( (vk->data_size+sizeof(uint32)) & 0xfffffff8 ) + 8;
-                                data_rec_size = ( data_rec_size - 1 ) ^ 0xFFFFFFFF;
-                        }
-                        if ( !prs_uint32( "data_rec_size", &hblock->ps, depth, &data_rec_size ))
-                                return false;
-                        if ( !prs_uint8s( charmode, "data", &hblock->ps, depth, vk->data, vk->data_size) )
-                                return false;
-
-                        if ( !hblock->ps.io )
-                                hblock->dirty = true;
-                }
-                else {
-                  if ( !(vk->data = zcalloc(sizeof(uint8), 4) ) )
-                                return false;
-                        SIVAL( vk->data, 0, vk->data_off );
-                }
-                
-        }
-
-        /* data_size must be divisible by 8 and large enough to hold the original record */
-
-        data_size = ((start_off - end_off ) & 0xfffffff8 );
-        if ( data_size !=  vk->rec_size )
-                DEBUG(10,("prs_vk_rec: data_size check failed (0x%x < 0x%x)\n", data_size, vk->rec_size));
-
-        if ( !hbin->ps.io )
-                hbin->dirty = true;
-
-        return true;
+  uint32 offset;
+  uint16 name_length;
+  prs_struct *ps = &hbin->ps;
+  uint32 data_size, start_off, end_off;
+
+  depth++;
+
+  /* backup and get the data_size */
+        
+  if ( !prs_set_offset( &hbin->ps, hbin->ps.data_offset-sizeof(uint32)) )
+    return false;
+  start_off = hbin->ps.data_offset;
+  if ( !prs_uint32( "rec_size", &hbin->ps, depth, &vk->rec_size ))
+    return false;
+
+  if ( !prs_uint8s( true, "header", ps, depth, vk->header, sizeof( vk->header )) )
+    return false;
+
+  if ( !hbin->ps.io )
+    name_length = strlen(vk->valuename);
+
+  if ( !prs_uint16( "name_length", ps, depth, &name_length ))
+    return false;
+  if ( !prs_uint32( "data_size", ps, depth, &vk->data_size ))
+    return false;
+  if ( !prs_uint32( "data_off", ps, depth, &vk->data_off ))
+    return false;
+  if ( !prs_uint32( "type", ps, depth, &vk->type))
+    return false;
+  if ( !prs_uint16( "flag", ps, depth, &vk->flag))
+    return false;
+
+  offset = ps->data_offset;
+  offset += 2;  /* skip 2 bytes */
+  prs_set_offset( ps, offset );
+
+  /* get the name */
+
+  if ( vk->flag&VK_FLAG_NAME_PRESENT ) {
+
+    if ( hbin->ps.io ) {
+      if ( !(vk->valuename = (char*)zcalloc(sizeof(char), name_length+1 )))
+        return false;
+    }
+    if ( !prs_uint8s( true, "name", ps, depth, vk->valuename, name_length ) )
+      return false;
+  }
+
+  end_off = hbin->ps.data_offset;
+
+  /* get the data if necessary */
+
+  if ( vk->data_size != 0 ) {
+    bool charmode = false;
+
+    if ( (vk->type == REG_SZ) || (vk->type == REG_MULTI_SZ) )
+      charmode = true;
+
+    /* the data is stored in the offset if the size <= 4 */
+
+    if ( !(vk->data_size & VK_DATA_IN_OFFSET) ) {
+      REGF_HBIN *hblock = hbin;
+      uint32 data_rec_size;
+
+      if ( hbin->ps.io ) {
+        if ( !(vk->data = (uint8*)zcalloc(sizeof(uint8), vk->data_size) ) )
+          return false;
+      }
+
+      /* this data can be in another hbin */
+      if ( !hbin_contains_offset( hbin, vk->data_off ) ) {
+        if ( !(hblock = lookup_hbin_block( file, vk->data_off )) )
+          return false;
+      }
+      if ( !(prs_set_offset( &hblock->ps, (vk->data_off+HBIN_HDR_SIZE-hblock->first_hbin_off)-sizeof(uint32) )) )
+        return false;
+
+      if ( !hblock->ps.io ) {
+        data_rec_size = ( (vk->data_size+sizeof(uint32)) & 0xfffffff8 ) + 8;
+        data_rec_size = ( data_rec_size - 1 ) ^ 0xFFFFFFFF;
+      }
+      if ( !prs_uint32( "data_rec_size", &hblock->ps, depth, &data_rec_size ))
+        return false;
+      if ( !prs_uint8s( charmode, "data", &hblock->ps, depth, vk->data, vk->data_size) )
+        return false;
+
+      if ( !hblock->ps.io )
+        hblock->dirty = true;
+    }
+    else {
+      if ( !(vk->data = zcalloc(sizeof(uint8), 4) ) )
+        return false;
+      SIVAL( vk->data, 0, vk->data_off );
+    }
+                
+  }
+
+  /* data_size must be divisible by 8 and large enough to hold the original record */
+
+  data_size = ((start_off - end_off ) & 0xfffffff8 );
+  if ( data_size !=  vk->rec_size )
+    /*DEBUG(10,("prs_vk_rec: data_size check failed (0x%x < 0x%x)\n", data_size, vk->rec_size));*/
+
+    if ( !hbin->ps.io )
+      hbin->dirty = true;
+
+  return true;
 }
 
@@ -766 +766 @@
                                  int depth, REGF_NK_REC *nk, REGF_FILE *file )
 {
-        int i;
-        uint32 record_size;
-
-        depth++;
-        
-        /* check if we have anything to do first */
-        
-        if ( nk->num_values == 0 )
-                return true;
-                
-        if ( hbin->ps.io ) {
-          if ( !(nk->values = (REGF_VK_REC*)zcalloc(sizeof(REGF_VK_REC), nk->num_values ) ) )
-                        return false;
-        }
-        
-        /* convert the offset to something relative to this HBIN block */
-        
-        if ( !prs_set_offset( &hbin->ps, nk->values_off+HBIN_HDR_SIZE-hbin->first_hbin_off-sizeof(uint32)) )
-                return false;
-
-        if ( !hbin->ps.io ) { 
-                record_size = ( ( nk->num_values * sizeof(uint32) ) & 0xfffffff8 ) + 8;
-                record_size = (record_size - 1) ^ 0xFFFFFFFF;
-        }
-
-        if ( !prs_uint32( "record_size", &hbin->ps, depth, &record_size ) )
-                return false;
-                
-        for ( i=0; i<nk->num_values; i++ ) {
-                if ( !prs_uint32( "vk_off", &hbin->ps, depth, &nk->values[i].rec_off ) )
-                        return false;
-        }
-
-        for ( i=0; i<nk->num_values; i++ ) {
-                REGF_HBIN *sub_hbin = hbin;
-                uint32 new_offset;
-        
-                if ( !hbin_contains_offset( hbin, nk->values[i].rec_off ) ) {
-                        sub_hbin = lookup_hbin_block( file, nk->values[i].rec_off );
-                        if ( !sub_hbin ) {
-                                DEBUG(0,("hbin_prs_vk_records: Failed to find HBIN block containing offset [0x%x]\n", 
-                                        nk->values[i].hbin_off));
-                                return false;
-                        }
-                }
-                
-                new_offset = nk->values[i].rec_off + HBIN_HDR_SIZE - sub_hbin->first_hbin_off;
-                if ( !prs_set_offset( &sub_hbin->ps, new_offset ) )
-                        return false;
-                if ( !hbin_prs_vk_rec( "vk_rec", sub_hbin, depth, &nk->values[i], file ) )
-                        return false;
-        }
-
-        if ( !hbin->ps.io )
-                hbin->dirty = true;
-
-
-        return true;
-}
-
-
-/*******************************************************************
-*******************************************************************/
+  int i;
+  uint32 record_size;
+
+  depth++;
+        
+  /* check if we have anything to do first */
+        
+  if ( nk->num_values == 0 )
+    return true;
+                
+  if ( hbin->ps.io ) {
+    if ( !(nk->values = (REGF_VK_REC*)zcalloc(sizeof(REGF_VK_REC), nk->num_values ) ) )
+      return false;
+  }
+        
+  /* convert the offset to something relative to this HBIN block */
+        
+  if ( !prs_set_offset( &hbin->ps, nk->values_off+HBIN_HDR_SIZE-hbin->first_hbin_off-sizeof(uint32)) )
+    return false;
+
+  if ( !hbin->ps.io ) { 
+    record_size = ( ( nk->num_values * sizeof(uint32) ) & 0xfffffff8 ) + 8;
+    record_size = (record_size - 1) ^ 0xFFFFFFFF;
+  }
+
+  if ( !prs_uint32( "record_size", &hbin->ps, depth, &record_size ) )
+    return false;
+                
+  for ( i=0; i<nk->num_values; i++ ) {
+    if ( !prs_uint32( "vk_off", &hbin->ps, depth, &nk->values[i].rec_off ) )
+      return false;
+  }
+
+  for ( i=0; i<nk->num_values; i++ ) {
+    REGF_HBIN *sub_hbin = hbin;
+    uint32 new_offset;
+        
+    if ( !hbin_contains_offset( hbin, nk->values[i].rec_off ) ) {
+      sub_hbin = lookup_hbin_block( file, nk->values[i].rec_off );
+      if ( !sub_hbin ) {
+        /*DEBUG(0,("hbin_prs_vk_records: Failed to find HBIN block containing offset [0x%x]\n", 
+          nk->values[i].hbin_off));*/
+        return false;
+      }
+    }
+                
+    new_offset = nk->values[i].rec_off + HBIN_HDR_SIZE - sub_hbin->first_hbin_off;
+    if ( !prs_set_offset( &sub_hbin->ps, new_offset ) )
+      return false;
+    if ( !hbin_prs_vk_rec( "vk_rec", sub_hbin, depth, &nk->values[i], file ) )
+      return false;
+  }
+
+  if ( !hbin->ps.io )
+    hbin->dirty = true;
+
+
+  return true;
+}
+
+
+/*******************************************************************
+ *******************************************************************/
 
 static REGF_SK_REC* find_sk_record_by_offset( REGF_FILE *file, uint32 offset )
 {
-        REGF_SK_REC *p_sk;
-        
-        for ( p_sk=file->sec_desc_list; p_sk; p_sk=p_sk->next ) {
-                if ( p_sk->sk_off == offset ) 
-                        return p_sk;
-        }
-        
-        return NULL;
-}
-
-/*******************************************************************
-*******************************************************************/
+  REGF_SK_REC *p_sk;
+        
+  for ( p_sk=file->sec_desc_list; p_sk; p_sk=p_sk->next ) {
+    if ( p_sk->sk_off == offset ) 
+      return p_sk;
+  }
+        
+  return NULL;
+}
+
+/*******************************************************************
+ *******************************************************************/
 
 static REGF_SK_REC* find_sk_record_by_sec_desc( REGF_FILE *file, SEC_DESC *sd )
 {
-        REGF_SK_REC *p;
-
-        for ( p=file->sec_desc_list; p; p=p->next ) {
-                if ( sec_desc_equal( p->sec_desc, sd ) )
-                        return p;
-        }
-
-        /* failure */
-
-        return NULL;
-}
-
-/*******************************************************************
-*******************************************************************/
+  REGF_SK_REC *p;
+
+  for ( p=file->sec_desc_list; p; p=p->next ) {
+    if ( sec_desc_equal( p->sec_desc, sd ) )
+      return p;
+  }
+
+  /* failure */
+
+  return NULL;
+}
+
+/*******************************************************************
+ *******************************************************************/
 
 static bool hbin_prs_key( REGF_FILE *file, REGF_HBIN *hbin, REGF_NK_REC *nk )
 {
-        int depth = 0;
-        REGF_HBIN *sub_hbin;
-        
-        depth++;
-
-        /* get the initial nk record */
-        
-        if ( !prs_nk_rec( "nk_rec", &hbin->ps, depth, nk ))
-                return false;
-
-        /* fill in values */
-        
-        if ( nk->num_values && (nk->values_off!=REGF_OFFSET_NONE) ) {
-                sub_hbin = hbin;
-                if ( !hbin_contains_offset( hbin, nk->values_off ) ) {
-                        sub_hbin = lookup_hbin_block( file, nk->values_off );
-                        if ( !sub_hbin ) {
-                                DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing value_list_offset [0x%x]\n", 
-                                        nk->values_off));
-                                return false;
-                        }
-                }
-                
-                if ( !hbin_prs_vk_records( "vk_rec", sub_hbin, depth, nk, file ))
-                        return false;
-        }
-                
-        /* now get subkeys */
-        
-        if ( nk->num_subkeys && (nk->subkeys_off!=REGF_OFFSET_NONE) ) {
-                sub_hbin = hbin;
-                if ( !hbin_contains_offset( hbin, nk->subkeys_off ) ) {
-                        sub_hbin = lookup_hbin_block( file, nk->subkeys_off );
-                        if ( !sub_hbin ) {
-                                DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing subkey_offset [0x%x]\n", 
-                                        nk->subkeys_off));
-                                return false;
-                        }
-                }
-                
-                if ( !hbin_prs_lf_records( "lf_rec", sub_hbin, depth, nk ))
-                        return false;
-        }
-
-        /* get the to the security descriptor.  First look if we have already parsed it */
-        
-        if ( (nk->sk_off!=REGF_OFFSET_NONE) && !( nk->sec_desc = find_sk_record_by_offset( file, nk->sk_off )) ) {
-
-                sub_hbin = hbin;
-                if ( !hbin_contains_offset( hbin, nk->sk_off ) ) {
-                        sub_hbin = lookup_hbin_block( file, nk->sk_off );
-                        if ( !sub_hbin ) {
-                                DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing sk_offset [0x%x]\n", 
-                                        nk->subkeys_off));
-                                return false;
-                        }
-                }
-                
-                if ( !(nk->sec_desc = (REGF_SK_REC*)zalloc(sizeof(REGF_SK_REC) )) )
-                        return false;
-                nk->sec_desc->sk_off = nk->sk_off;
-                if ( !hbin_prs_sk_rec( "sk_rec", sub_hbin, depth, nk->sec_desc ))
-                        return false;
+  int depth = 0;
+  REGF_HBIN *sub_hbin;
+        
+  depth++;
+
+  /* get the initial nk record */
+        
+  if ( !prs_nk_rec( "nk_rec", &hbin->ps, depth, nk ))
+    return false;
+
+  /* fill in values */
+        
+  if ( nk->num_values && (nk->values_off!=REGF_OFFSET_NONE) ) {
+    sub_hbin = hbin;
+    if ( !hbin_contains_offset( hbin, nk->values_off ) ) {
+      sub_hbin = lookup_hbin_block( file, nk->values_off );
+      if ( !sub_hbin ) {
+        /*DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing value_list_offset [0x%x]\n", 
+          nk->values_off));*/
+        return false;
+      }
+    }
+                
+    if ( !hbin_prs_vk_records( "vk_rec", sub_hbin, depth, nk, file ))
+      return false;
+  }
+                
+  /* now get subkeys */
+        
+  if ( nk->num_subkeys && (nk->subkeys_off!=REGF_OFFSET_NONE) ) {
+    sub_hbin = hbin;
+    if ( !hbin_contains_offset( hbin, nk->subkeys_off ) ) {
+      sub_hbin = lookup_hbin_block( file, nk->subkeys_off );
+      if ( !sub_hbin ) {
+        /*DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing subkey_offset [0x%x]\n", 
+          nk->subkeys_off));*/
+        return false;
+      }
+    }
+                
+    if ( !hbin_prs_lf_records( "lf_rec", sub_hbin, depth, nk ))
+      return false;
+  }
+
+  /* get the to the security descriptor.  First look if we have already parsed it */
+        
+  if ( (nk->sk_off!=REGF_OFFSET_NONE) && !( nk->sec_desc = find_sk_record_by_offset( file, nk->sk_off )) ) {
+
+    sub_hbin = hbin;
+    if ( !hbin_contains_offset( hbin, nk->sk_off ) ) {
+      sub_hbin = lookup_hbin_block( file, nk->sk_off );
+      if ( !sub_hbin ) {
+        /*DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing sk_offset [0x%x]\n", 
+          nk->subkeys_off));*/
+        return false;
+      }
+    }
+                
+    if ( !(nk->sec_desc = (REGF_SK_REC*)zalloc(sizeof(REGF_SK_REC) )) )
+      return false;
+    nk->sec_desc->sk_off = nk->sk_off;
+    if ( !hbin_prs_sk_rec( "sk_rec", sub_hbin, depth, nk->sec_desc ))
+      return false;
                         
-                /* add to the list of security descriptors (ref_count has been read from the files) */
-
-                nk->sec_desc->sk_off = nk->sk_off;
-                DLIST_ADD( file->sec_desc_list, nk->sec_desc );
-        }
-                
-        return true;
-}
-
-/*******************************************************************
-*******************************************************************/
+    /* add to the list of security descriptors (ref_count has been read from the files) */
+
+    nk->sec_desc->sk_off = nk->sk_off;
+    DLIST_ADD( file->sec_desc_list, nk->sec_desc );
+  }
+                
+  return true;
+}
+
+/*******************************************************************
+ *******************************************************************/
 
 static bool next_record( REGF_HBIN *hbin, const char *hdr, bool *eob )
 {
-        char header[REC_HDR_SIZE] = "";
-        uint32 record_size;
-        uint32 curr_off, block_size;
-        bool found = false;
-        prs_struct *ps = &hbin->ps;
-        
-        curr_off = ps->data_offset;
-        if ( curr_off == 0 )
-                prs_set_offset( ps, HBIN_HEADER_REC_SIZE );
-
-        /* assume that the current offset is at the reacord header 
-           and we need to backup to read the record size */
-
-        curr_off -= sizeof(uint32);
-
-        block_size = ps->buffer_size;
-        record_size = 0;
-        while ( !found ) {
-
-                curr_off = curr_off+record_size;
-                if ( curr_off >= block_size ) 
-                        break;
-
-                if ( !prs_set_offset( &hbin->ps, curr_off) )
-                        return false;
-
-                if ( !prs_uint32( "record_size", ps, 0, &record_size ) )
-                        return false;
-                if ( !prs_uint8s( true, "header", ps, 0, header, REC_HDR_SIZE ) )
-                        return false;
-
-                if ( record_size & 0x80000000 ) {
-                        /* absolute_value(record_size) */
-                        record_size = (record_size ^ 0xffffffff) + 1;
-                }
-
-                if ( memcmp( header, hdr, REC_HDR_SIZE ) == 0 ) {
-                        found = true;
-                        curr_off += sizeof(uint32);
-                }
-        } 
-
-        /* mark prs_struct as done ( at end ) if no more SK records */
-        /* mark end-of-block as true */
-        
-        if ( !found ) 
-        {
-          prs_set_offset( &hbin->ps, hbin->ps.buffer_size );
-          *eob = true;
-          return false;
-        }
-                
-        if ( !prs_set_offset( ps, curr_off ) )
-                return false;
-
-        return true;
-}
-
-
-/*******************************************************************
-*******************************************************************/
+  char header[REC_HDR_SIZE] = "";
+  uint32 record_size;
+  uint32 curr_off, block_size;
+  bool found = false;
+  prs_struct *ps = &hbin->ps;
+        
+  curr_off = ps->data_offset;
+  if ( curr_off == 0 )
+    prs_set_offset( ps, HBIN_HEADER_REC_SIZE );
+
+  /* assume that the current offset is at the reacord header 
+     and we need to backup to read the record size */
+
+  curr_off -= sizeof(uint32);
+
+  block_size = ps->buffer_size;
+  record_size = 0;
+  while ( !found ) {
+
+    curr_off = curr_off+record_size;
+    if ( curr_off >= block_size ) 
+      break;
+
+    if ( !prs_set_offset( &hbin->ps, curr_off) )
+      return false;
+
+    if ( !prs_uint32( "record_size", ps, 0, &record_size ) )
+      return false;
+    if ( !prs_uint8s( true, "header", ps, 0, header, REC_HDR_SIZE ) )
+      return false;
+
+    if ( record_size & 0x80000000 ) {
+      /* absolute_value(record_size) */
+      record_size = (record_size ^ 0xffffffff) + 1;
+    }
+
+    if ( memcmp( header, hdr, REC_HDR_SIZE ) == 0 ) {
+      found = true;
+      curr_off += sizeof(uint32);
+    }
+  } 
+
+  /* mark prs_struct as done ( at end ) if no more SK records */
+  /* mark end-of-block as true */
+        
+  if ( !found ) 
+  {
+    prs_set_offset( &hbin->ps, hbin->ps.buffer_size );
+    *eob = true;
+    return false;
+  }
+                
+  if ( !prs_set_offset( ps, curr_off ) )
+    return false;
+
+  return true;
+}
+
+
+/*******************************************************************
+ *******************************************************************/
 static bool next_nk_record( REGF_FILE *file, REGF_HBIN *hbin, REGF_NK_REC *nk, bool *eob )
 {
-        if ( next_record( hbin, "nk", eob ) && hbin_prs_key( file, hbin, nk ) )
-                return true;
-        
-        return false;
-}
-
-
-/*******************************************************************
- Intialize the newly created REGF_BLOCK in *file and write the 
- block header to disk 
-*******************************************************************/
-static bool init_regf_block( REGF_FILE *file )
-{       
-        prs_struct ps;
-        bool result = true;
-        
-        if ( !prs_init( &ps, REGF_BLOCKSIZE, file->mem_ctx, MARSHALL ) )
-                return false;
-                
-        memcpy( file->header, "regf", REGF_HDR_SIZE );
-        file->data_offset = 0x20;
-        file->last_block  = 0x1000;
-        
-        /* set mod time */
-        
-        unix_to_nt_time( &file->mtime, time(NULL) );
-        
-        /* hard coded values...no diea what these are ... maybe in time */
-        
-        file->unknown1 = 0x2;
-        file->unknown2 = 0x1;
-        file->unknown3 = 0x3;
-        file->unknown4 = 0x0;
-        file->unknown5 = 0x1;
-        file->unknown6 = 0x1;
-        
-        /* write header to the buffer */
-        
-        if ( !prs_regf_block( "regf_header", &ps, 0, file ) ) {
-                result = false;
-                goto out;
-        }
-        
-        /* calculate the checksum, re-marshall data (to include the checksum) 
-           and write to disk */
-        
-        file->checksum = regf_block_checksum( &ps );
-        prs_set_offset( &ps, 0 );
-        if ( !prs_regf_block( "regf_header", &ps, 0, file ) ) {
-                result = false;
-                goto out;
-        }
-                
-out:
-        if(ps.is_dynamic)
-          SAFE_FREE(ps.data_p);
-        ps.is_dynamic = false;
-        ps.buffer_size = 0;
-        ps.data_offset = 0;
-
-        return result;
+  if ( next_record( hbin, "nk", eob ) && hbin_prs_key( file, hbin, nk ) )
+    return true;
+        
+  return false;
 }
 
@@ -1075 +1018 @@
 REGF_FILE* regfio_open( const char *filename )
 {
-        REGF_FILE *rb;
-        int flags = O_RDONLY;
-
-        if ( !(rb = (REGF_FILE*)malloc(sizeof(REGF_FILE))) ) {
-                DEBUG(0,("ERROR allocating memory\n"));
-                return NULL;
-        }
-        zerop( rb );
-        rb->fd = -1;
-        
-        /*      if ( !(rb->mem_ctx = talloc_init( "read_regf_block" )) ) 
-        {
-          regfio_close( rb );
-          return NULL;
-        }
-        */
-        rb->open_flags = flags;
-        
-        /* open and existing file */
-
-        if ( (rb->fd = open(filename, flags)) == -1 ) {
-                DEBUG(0,("regfio_open: failure to open %s (%s)\n", filename, strerror(errno)));
-                regfio_close( rb );
-                return NULL;
-        }
-        
-        /* check if we are creating a new file or overwriting an existing one */
-                
-        if ( flags & (O_CREAT|O_TRUNC) ) {
-                if ( !init_regf_block( rb ) ) {
-                        DEBUG(0,("regfio_open: Failed to read initial REGF block\n"));
-                        regfio_close( rb );
-                        return NULL;
-                }
-                
-                /* success */
-                return rb;
-        }
-        
-        /* read in an existing file */
-        
-        if ( !read_regf_block( rb ) ) {
-                DEBUG(0,("regfio_open: Failed to read initial REGF block\n"));
-                regfio_close( rb );
-                return NULL;
-        }
-        
-        /* success */
-        
-        return rb;
-}
-
-
-/*******************************************************************
-*******************************************************************/
+  REGF_FILE *rb;
+  int flags = O_RDONLY;
+
+  if ( !(rb = (REGF_FILE*)malloc(sizeof(REGF_FILE))) ) {
+    /* DEBUG(0,("ERROR allocating memory\n")); */
+    return NULL;
+  }
+  memset(rb, 0, sizeof(REGF_FILE));
+  rb->fd = -1;
+        
+  /*    if ( !(rb->mem_ctx = talloc_init( "read_regf_block" )) ) 
+    {
+    regfio_close( rb );
+    return NULL;
+    }
+  */
+  rb->open_flags = flags;
+        
+  /* open and existing file */
+
+  if ( (rb->fd = open(filename, flags)) == -1 ) {
+    /* DEBUG(0,("regfio_open: failure to open %s (%s)\n", filename, strerror(errno)));*/
+    regfio_close( rb );
+    return NULL;
+  }
+        
+  /* read in an existing file */
+        
+  if ( !read_regf_block( rb ) ) {
+    /* DEBUG(0,("regfio_open: Failed to read initial REGF block\n"));*/
+    regfio_close( rb );
+    return NULL;
+  }
+        
+  /* success */
+        
+  return rb;
+}
+
+
+/*******************************************************************
+ *******************************************************************/
 static void regfio_mem_free( REGF_FILE *file )
 {
-        /* free any zalloc()'d memory */
+  /* free any zalloc()'d memory */
         
   /*    if ( file && file->mem_ctx )
-                free(file->mem_ctx);
+    free(file->mem_ctx);
   */
 }
@@ -1141 +1071 @@
 
 /*******************************************************************
-*******************************************************************/
+ *******************************************************************/
 int regfio_close( REGF_FILE *file )
 {
-        int fd;
-
-        regfio_mem_free( file );
-
-        /* nothing to do if there is no open file */
-
-        if ( !file || (file->fd == -1) )
-                return 0;
-                
-        fd = file->fd;
-        file->fd = -1;
-        SAFE_FREE( file );
-
-        return close( fd );
+  int fd;
+
+  regfio_mem_free( file );
+
+  /* nothing to do if there is no open file */
+
+  if ( !file || (file->fd == -1) )
+    return 0;
+                
+  fd = file->fd;
+  file->fd = -1;
+  SAFE_FREE( file );
+
+  return close( fd );
 }
 
@@ -1167 +1097 @@
 REGF_NK_REC* regfio_rootkey( REGF_FILE *file )
 {
-        REGF_NK_REC *nk;
-        REGF_HBIN   *hbin;
-        uint32      offset = REGF_BLOCKSIZE;
-        bool        found = false;
-        bool        eob;
-        
-        if ( !file )
-                return NULL;
-                
-        if ( !(nk = (REGF_NK_REC*)zalloc(sizeof(REGF_NK_REC) )) ) {
-                DEBUG(0,("regfio_rootkey: zalloc() failed!\n"));
-                return NULL;
+  REGF_NK_REC *nk;
+  REGF_HBIN   *hbin;
+  uint32      offset = REGF_BLOCKSIZE;
+  bool        found = false;
+  bool        eob;
+        
+  if ( !file )
+    return NULL;
+                
+  if ( !(nk = (REGF_NK_REC*)zalloc(sizeof(REGF_NK_REC) )) ) {
+    /*DEBUG(0,("regfio_rootkey: zalloc() failed!\n"));*/
+    return NULL;
+  }
+        
+  /* scan through the file on HBIN block at a time looking 
+     for an NK record with a type == 0x002c.
+     Normally this is the first nk record in the first hbin 
+     block (but I'm not assuming that for now) */
+        
+  while ( (hbin = read_hbin_block( file, offset )) ) {
+    eob = false;
+
+    while ( !eob) {
+      if ( next_nk_record( file, hbin, nk, &eob ) ) {
+        if ( nk->key_type == NK_TYPE_ROOTKEY ) {
+          found = true;
+          break;
         }
-        
-        /* scan through the file on HBIN block at a time looking 
-           for an NK record with a type == 0x002c.
-           Normally this is the first nk record in the first hbin 
-           block (but I'm not assuming that for now) */
-        
-        while ( (hbin = read_hbin_block( file, offset )) ) {
-                eob = false;
-
-                while ( !eob) {
-                        if ( next_nk_record( file, hbin, nk, &eob ) ) {
-                                if ( nk->key_type == NK_TYPE_ROOTKEY ) {
-                                        found = true;
-                                        break;
-                                }
-                        }
-                        if(hbin->ps.is_dynamic)
-                          SAFE_FREE(hbin->ps.data_p);
-                        hbin->ps.is_dynamic = false;
-                        hbin->ps.buffer_size = 0;
-                        hbin->ps.data_offset = 0;
-                }
-                
-                if ( found ) 
-                        break;
-
-                offset += hbin->block_size;
-        }
-        
-        if ( !found ) {
-                DEBUG(0,("regfio_rootkey: corrupt registry file ?  No root key record located\n"));
-                return NULL;
-        }
-
-        DLIST_ADD( file->block_list, hbin );
-
-        return nk;              
+      }
+      if(hbin->ps.is_dynamic)
+        SAFE_FREE(hbin->ps.data_p);
+      hbin->ps.is_dynamic = false;
+      hbin->ps.buffer_size = 0;
+      hbin->ps.data_offset = 0;
+    }
+                
+    if ( found ) 
+      break;
+
+    offset += hbin->block_size;
+  }
+        
+  if ( !found ) {
+    /*DEBUG(0,("regfio_rootkey: corrupt registry file ?  No root key record located\n"));*/
+    return NULL;
+  }
+
+  DLIST_ADD( file->block_list, hbin );
+
+  return nk;            
 }
 
@@ -1226 +1156 @@
 REGF_NK_REC* regfio_fetch_subkey( REGF_FILE *file, REGF_NK_REC *nk )
 {
-        REGF_NK_REC *subkey;
-        REGF_HBIN   *hbin;
-        uint32      nk_offset;
-
-        /* see if there is anything left to report */
-        
-        if ( !nk || (nk->subkeys_off==REGF_OFFSET_NONE) || (nk->subkey_index >= nk->num_subkeys) )
-                return NULL;
-
-        /* find the HBIN block which should contain the nk record */
-        
-        if ( !(hbin = lookup_hbin_block( file, nk->subkeys.hashes[nk->subkey_index].nk_off )) ) {
-                DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing offset [0x%x]\n", 
-                        nk->subkeys.hashes[nk->subkey_index].nk_off));
-                return NULL;
-        }
-        
-        nk_offset = nk->subkeys.hashes[nk->subkey_index].nk_off;
-        if ( !prs_set_offset( &hbin->ps, (HBIN_HDR_SIZE + nk_offset - hbin->first_hbin_off) ) )
-                return NULL;
-                
-        nk->subkey_index++;
-        if (!(subkey = (REGF_NK_REC*)zalloc(sizeof(REGF_NK_REC))))
-                return NULL;
-
-        if ( !hbin_prs_key( file, hbin, subkey ) )
-                return NULL;
-        
-        return subkey;
-}
+  REGF_NK_REC *subkey;
+  REGF_HBIN   *hbin;
+  uint32      nk_offset;
+
+  /* see if there is anything left to report */
+        
+  if ( !nk || (nk->subkeys_off==REGF_OFFSET_NONE) || (nk->subkey_index >= nk->num_subkeys) )
+    return NULL;
+
+  /* find the HBIN block which should contain the nk record */
+        
+  if(!(hbin 
+       = lookup_hbin_block(file, nk->subkeys.hashes[nk->subkey_index].nk_off )))
+  {
+    /*DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing offset [0x%x]\n", 
+      nk->subkeys.hashes[nk->subkey_index].nk_off));*/
+    return NULL;
+  }
+        
+  nk_offset = nk->subkeys.hashes[nk->subkey_index].nk_off;
+  if ( !prs_set_offset( &hbin->ps, (HBIN_HDR_SIZE + nk_offset - hbin->first_hbin_off) ) )
+    return NULL;
+                
+  nk->subkey_index++;
+  if (!(subkey = (REGF_NK_REC*)zalloc(sizeof(REGF_NK_REC))))
+    return NULL;
+
+  if ( !hbin_prs_key( file, hbin, subkey ) )
+    return NULL;
+        
+  return subkey;
+}