2 * Unix SMB/CIFS implementation.
3 * Windows NT registry I/O library
4 * Copyright (c) Gerald (Jerry) Carter 2005
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 /*******************************************************************
26 * TODO : Right now this code basically ignores classnames.
28 ******************************************************************/
31 /*******************************************************************
32 *******************************************************************/
34 static int write_block( REGF_FILE *file, prs_struct *ps, uint32 offset )
36 int bytes_written, returned;
37 char *buffer = prs_data_p( ps );
38 uint32 buffer_size = prs_data_size( ps );
44 /* check for end of file */
46 if ( sys_fstat( file->fd, &sbuf ) ) {
47 DEBUG(0,("write_block: stat() failed! (%s)\n", strerror(errno)));
51 if ( lseek( file->fd, offset, SEEK_SET ) == -1 ) {
52 DEBUG(0,("write_block: lseek() failed! (%s)\n", strerror(errno) ));
56 bytes_written = returned = 0;
57 while ( bytes_written < buffer_size ) {
58 if ( (returned = write( file->fd, buffer+bytes_written, buffer_size-bytes_written )) == -1 ) {
59 DEBUG(0,("write_block: write() failed! (%s)\n", strerror(errno) ));
63 bytes_written += returned;
69 /*******************************************************************
70 *******************************************************************/
72 static int read_block( REGF_FILE *file, prs_struct *ps, uint32 file_offset, uint32 block_size )
74 int bytes_read, returned;
78 /* check for end of file */
80 if ( sys_fstat( file->fd, &sbuf ) ) {
81 DEBUG(0,("read_block: stat() failed! (%s)\n", strerror(errno)));
85 if ( (size_t)file_offset >= sbuf.st_size )
88 /* if block_size == 0, we are parsing HBIN records and need
89 to read some of the header to get the block_size from there */
91 if ( block_size == 0 ) {
94 if ( lseek( file->fd, file_offset, SEEK_SET ) == -1 ) {
95 DEBUG(0,("read_block: lseek() failed! (%s)\n", strerror(errno) ));
99 returned = read( file->fd, hdr, 0x20 );
100 if ( (returned == -1) || (returned < 0x20) ) {
101 DEBUG(0,("read_block: failed to read in HBIN header. Is the file corrupt?\n"));
105 /* make sure this is an hbin header */
107 if ( strncmp( hdr, "hbin", HBIN_HDR_SIZE ) != 0 ) {
108 DEBUG(0,("read_block: invalid block header!\n"));
112 block_size = IVAL( hdr, 0x08 );
115 DEBUG(10,("read_block: block_size == 0x%x\n", block_size ));
117 /* set the offset, initialize the buffer, and read the block from disk */
119 if ( lseek( file->fd, file_offset, SEEK_SET ) == -1 ) {
120 DEBUG(0,("read_block: lseek() failed! (%s)\n", strerror(errno) ));
124 prs_init( ps, block_size, file->mem_ctx, UNMARSHALL );
125 buffer = prs_data_p( ps );
126 bytes_read = returned = 0;
128 while ( bytes_read < block_size ) {
129 if ( (returned = read( file->fd, buffer+bytes_read, block_size-bytes_read )) == -1 ) {
130 DEBUG(0,("read_block: read() failed (%s)\n", strerror(errno) ));
133 if ( (returned == 0) && (bytes_read < block_size) ) {
134 DEBUG(0,("read_block: not a vald registry file ?\n" ));
138 bytes_read += returned;
144 /*******************************************************************
145 *******************************************************************/
147 static BOOL write_hbin_block( REGF_FILE *file, REGF_HBIN *hbin )
152 /* write free space record if any is available */
154 if ( hbin->free_off != REGF_OFFSET_NONE ) {
155 uint32 header = 0xffffffff;
157 if ( !prs_set_offset( &hbin->ps, hbin->free_off-sizeof(uint32) ) )
159 if ( !prs_uint32( "free_size", &hbin->ps, 0, &hbin->free_size ) )
161 if ( !prs_uint32( "free_header", &hbin->ps, 0, &header ) )
165 hbin->dirty = (write_block( file, &hbin->ps, hbin->file_off ) != -1);
170 /*******************************************************************
171 *******************************************************************/
173 static BOOL hbin_block_close( REGF_FILE *file, REGF_HBIN *hbin )
177 /* remove the block from the open list and flush it to disk */
179 for ( p=file->block_list; p && p!=hbin; p=p->next )
183 DLIST_REMOVE( file->block_list, hbin );
186 DEBUG(0,("hbin_block_close: block not in open list!\n"));
188 if ( !write_hbin_block( file, hbin ) )
194 /*******************************************************************
195 *******************************************************************/
197 static BOOL prs_regf_block( const char *desc, prs_struct *ps, int depth, REGF_FILE *file )
199 prs_debug(ps, depth, desc, "prs_regf_block");
202 if ( !prs_uint8s( True, "header", ps, depth, (uint8*)file->header, sizeof( file->header )) )
205 /* yes, these values are always identical so store them only once */
207 if ( !prs_uint32( "unknown1", ps, depth, &file->unknown1 ))
209 if ( !prs_uint32( "unknown1 (again)", ps, depth, &file->unknown1 ))
212 /* get the modtime */
214 if ( !prs_set_offset( ps, 0x0c ) )
216 if ( !smb_io_time( "modtime", &file->mtime, ps, depth ) )
221 if ( !prs_uint32( "unknown2", ps, depth, &file->unknown2 ))
223 if ( !prs_uint32( "unknown3", ps, depth, &file->unknown3 ))
225 if ( !prs_uint32( "unknown4", ps, depth, &file->unknown4 ))
227 if ( !prs_uint32( "unknown5", ps, depth, &file->unknown5 ))
230 /* get file offsets */
232 if ( !prs_set_offset( ps, 0x24 ) )
234 if ( !prs_uint32( "data_offset", ps, depth, &file->data_offset ))
236 if ( !prs_uint32( "last_block", ps, depth, &file->last_block ))
239 /* one more constant */
241 if ( !prs_uint32( "unknown6", ps, depth, &file->unknown6 ))
244 /* get the checksum */
246 if ( !prs_set_offset( ps, 0x01fc ) )
248 if ( !prs_uint32( "checksum", ps, depth, &file->checksum ))
254 /*******************************************************************
255 *******************************************************************/
257 static BOOL prs_hbin_block( const char *desc, prs_struct *ps, int depth, REGF_HBIN *hbin )
261 prs_debug(ps, depth, desc, "prs_regf_block");
264 if ( !prs_uint8s( True, "header", ps, depth, (uint8*)hbin->header, sizeof( hbin->header )) )
267 if ( !prs_uint32( "first_hbin_off", ps, depth, &hbin->first_hbin_off ))
270 /* The dosreg.cpp comments say that the block size is at 0x1c.
271 According to a WINXP NTUSER.dat file, this is wrong. The block_size
274 if ( !prs_uint32( "block_size", ps, depth, &hbin->block_size ))
277 block_size2 = hbin->block_size;
278 prs_set_offset( ps, 0x1c );
279 if ( !prs_uint32( "block_size2", ps, depth, &block_size2 ))
282 if ( MARSHALLING(ps) )
289 /*******************************************************************
290 *******************************************************************/
292 static BOOL prs_nk_rec( const char *desc, prs_struct *ps, int depth, REGF_NK_REC *nk )
294 uint16 class_length, name_length;
296 uint32 data_size, start_off, end_off;
297 uint32 unknown_off = REGF_OFFSET_NONE;
299 nk->hbin_off = prs_offset( ps );
300 start = nk->hbin_off;
302 prs_debug(ps, depth, desc, "prs_nk_rec");
305 /* back up and get the data_size */
307 if ( !prs_set_offset( ps, prs_offset(ps)-sizeof(uint32)) )
309 start_off = prs_offset( ps );
310 if ( !prs_uint32( "rec_size", ps, depth, &nk->rec_size ))
313 if ( !prs_uint8s( True, "header", ps, depth, (uint8*)nk->header, sizeof( nk->header )) )
316 if ( !prs_uint16( "key_type", ps, depth, &nk->key_type ))
318 if ( !smb_io_time( "mtime", &nk->mtime, ps, depth ))
321 if ( !prs_set_offset( ps, start+0x0010 ) )
323 if ( !prs_uint32( "parent_off", ps, depth, &nk->parent_off ))
325 if ( !prs_uint32( "num_subkeys", ps, depth, &nk->num_subkeys ))
328 if ( !prs_set_offset( ps, start+0x001c ) )
330 if ( !prs_uint32( "subkeys_off", ps, depth, &nk->subkeys_off ))
332 if ( !prs_uint32( "unknown_off", ps, depth, &unknown_off) )
335 if ( !prs_set_offset( ps, start+0x0024 ) )
337 if ( !prs_uint32( "num_values", ps, depth, &nk->num_values ))
339 if ( !prs_uint32( "values_off", ps, depth, &nk->values_off ))
341 if ( !prs_uint32( "sk_off", ps, depth, &nk->sk_off ))
343 if ( !prs_uint32( "classname_off", ps, depth, &nk->classname_off ))
346 if ( !prs_uint32( "max_bytes_subkeyname", ps, depth, &nk->max_bytes_subkeyname))
348 if ( !prs_uint32( "max_bytes_subkeyclassname", ps, depth, &nk->max_bytes_subkeyclassname))
350 if ( !prs_uint32( "max_bytes_valuename", ps, depth, &nk->max_bytes_valuename))
352 if ( !prs_uint32( "max_bytes_value", ps, depth, &nk->max_bytes_value))
354 if ( !prs_uint32( "unknown index", ps, depth, &nk->unk_index))
357 name_length = nk->keyname ? strlen(nk->keyname) : 0 ;
358 class_length = nk->classname ? strlen(nk->classname) : 0 ;
359 if ( !prs_uint16( "name_length", ps, depth, &name_length ))
361 if ( !prs_uint16( "class_length", ps, depth, &class_length ))
364 if ( class_length ) {
369 if ( UNMARSHALLING(ps) ) {
370 if ( !(nk->keyname = PRS_ALLOC_MEM( ps, char, name_length+1 )) )
374 if ( !prs_uint8s( True, "name", ps, depth, (uint8*)nk->keyname, name_length) )
377 if ( UNMARSHALLING(ps) )
378 nk->keyname[name_length] = '\0';
381 end_off = prs_offset( ps );
383 /* data_size must be divisible by 8 and large enough to hold the original record */
385 data_size = ((start_off - end_off) & 0xfffffff8 );
386 if ( data_size > nk->rec_size )
387 DEBUG(10,("Encountered reused record (0x%x < 0x%x)\n", data_size, nk->rec_size));
389 if ( MARSHALLING(ps) )
390 nk->hbin->dirty = True;
395 /*******************************************************************
396 *******************************************************************/
398 static uint32 regf_block_checksum( prs_struct *ps )
400 char *buffer = prs_data_p( ps );
404 /* XOR of all bytes 0x0000 - 0x01FB */
408 for ( i=0; i<0x01FB; i+=4 ) {
409 x = IVAL(buffer, i );
416 /*******************************************************************
417 *******************************************************************/
419 static BOOL read_regf_block( REGF_FILE *file )
424 /* grab the first block from the file */
426 if ( read_block( file, &ps, 0, REGF_BLOCKSIZE ) == -1 )
429 /* parse the block and verify the checksum */
431 if ( !prs_regf_block( "regf_header", &ps, 0, file ) )
434 checksum = regf_block_checksum( &ps );
438 if ( file->checksum != checksum ) {
439 DEBUG(0,("read_regf_block: invalid checksum\n" ));
446 /*******************************************************************
447 *******************************************************************/
449 static REGF_HBIN* read_hbin_block( REGF_FILE *file, off_t offset )
452 uint32 record_size, curr_off, block_size, header;
454 if ( !(hbin = TALLOC_ZERO_P(file->mem_ctx, REGF_HBIN)) )
456 hbin->file_off = offset;
459 if ( read_block( file, &hbin->ps, offset, 0 ) == -1 )
462 if ( !prs_hbin_block( "hbin", &hbin->ps, 0, hbin ) )
465 /* this should be the same thing as hbin->block_size but just in case */
467 block_size = prs_data_size( &hbin->ps );
469 /* Find the available free space offset. Always at the end,
470 so walk the record list and stop when you get to the end.
471 The end is defined by a record header of 0xffffffff. The
472 previous 4 bytes contains the amount of free space remaining
473 in the hbin block. */
475 /* remember that the record_size is in the 4 bytes preceeding the record itself */
477 if ( !prs_set_offset( &hbin->ps, file->data_offset+HBIN_HDR_SIZE-sizeof(uint32) ) )
482 curr_off = prs_offset( &hbin->ps );
483 while ( header != 0xffffffff ) {
484 /* not done yet so reset the current offset to the
485 next record_size field */
487 curr_off = curr_off+record_size;
489 /* for some reason the record_size of the last record in
490 an hbin block can extend past the end of the block
491 even though the record fits within the remaining
492 space....aaarrrgggghhhhhh */
494 if ( curr_off >= block_size ) {
500 if ( !prs_set_offset( &hbin->ps, curr_off) )
503 if ( !prs_uint32( "rec_size", &hbin->ps, 0, &record_size ) )
505 if ( !prs_uint32( "header", &hbin->ps, 0, &header ) )
508 SMB_ASSERT( record_size != 0 );
510 if ( record_size & 0x80000000 ) {
511 /* absolute_value(record_size) */
512 record_size = (record_size ^ 0xffffffff) + 1;
516 /* save the free space offset */
518 if ( header == 0xffffffff ) {
520 /* account for the fact that the curr_off is 4 bytes behind the actual
523 hbin->free_off = curr_off + sizeof(uint32);
524 hbin->free_size = record_size;
527 DEBUG(10,("read_hbin_block: free space offset == 0x%x\n", hbin->free_off));
529 if ( !prs_set_offset( &hbin->ps, file->data_offset+HBIN_HDR_SIZE ) )
535 /*******************************************************************
536 Input a random offset and receive the corresponding HBIN
538 *******************************************************************/
540 static BOOL hbin_contains_offset( REGF_HBIN *hbin, uint32 offset )
545 if ( (offset > hbin->first_hbin_off) && (offset < (hbin->first_hbin_off+hbin->block_size)) )
551 /*******************************************************************
552 Input a random offset and receive the corresponding HBIN
554 *******************************************************************/
556 static REGF_HBIN* lookup_hbin_block( REGF_FILE *file, uint32 offset )
558 REGF_HBIN *hbin = NULL;
561 /* start with the open list */
563 for ( hbin=file->block_list; hbin; hbin=hbin->next ) {
564 DEBUG(10,("lookup_hbin_block: address = 0x%x [0x%x]\n", hbin->file_off, (uint32)hbin ));
565 if ( hbin_contains_offset( hbin, offset ) )
570 /* start at the beginning */
572 block_off = REGF_BLOCKSIZE;
574 /* cleanup before the next round */
576 prs_mem_free( &hbin->ps );
578 hbin = read_hbin_block( file, block_off );
581 block_off = hbin->file_off + hbin->block_size;
583 } while ( hbin && !hbin_contains_offset( hbin, offset ) );
587 DLIST_ADD( file->block_list, hbin );
592 /*******************************************************************
593 *******************************************************************/
595 static BOOL prs_hash_rec( const char *desc, prs_struct *ps, int depth, REGF_HASH_REC *hash )
597 prs_debug(ps, depth, desc, "prs_hash_rec");
600 if ( !prs_uint32( "nk_off", ps, depth, &hash->nk_off ))
602 if ( !prs_uint8s( True, "keycheck", ps, depth, hash->keycheck, sizeof( hash->keycheck )) )
608 /*******************************************************************
609 *******************************************************************/
611 static BOOL hbin_prs_lf_records( const char *desc, REGF_HBIN *hbin, int depth, REGF_NK_REC *nk )
614 REGF_LF_REC *lf = &nk->subkeys;
615 uint32 data_size, start_off, end_off;
617 prs_debug(&hbin->ps, depth, desc, "prs_lf_records");
620 /* check if we have anything to do first */
622 if ( nk->num_subkeys == 0 )
625 /* move to the LF record */
627 if ( !prs_set_offset( &hbin->ps, nk->subkeys_off + HBIN_HDR_SIZE - hbin->first_hbin_off ) )
630 /* backup and get the data_size */
632 if ( !prs_set_offset( &hbin->ps, prs_offset(&hbin->ps)-sizeof(uint32)) )
634 start_off = prs_offset( &hbin->ps );
635 if ( !prs_uint32( "rec_size", &hbin->ps, depth, &lf->rec_size ))
638 if ( !prs_uint8s( True, "header", &hbin->ps, depth, (uint8*)lf->header, sizeof( lf->header )) )
641 if ( !prs_uint16( "num_keys", &hbin->ps, depth, &lf->num_keys))
644 if ( UNMARSHALLING(&hbin->ps) ) {
645 if ( !(lf->hashes = PRS_ALLOC_MEM( &hbin->ps, REGF_HASH_REC, lf->num_keys )) )
649 for ( i=0; i<lf->num_keys; i++ ) {
650 if ( !prs_hash_rec( "hash_rec", &hbin->ps, depth, &lf->hashes[i] ) )
654 end_off = prs_offset( &hbin->ps );
656 /* data_size must be divisible by 8 and large enough to hold the original record */
658 data_size = ((start_off - end_off) & 0xfffffff8 );
659 if ( data_size > lf->rec_size )
660 DEBUG(10,("Encountered reused record (0x%x < 0x%x)\n", data_size, lf->rec_size));
662 if ( MARSHALLING(&hbin->ps) )
668 /*******************************************************************
669 *******************************************************************/
671 static BOOL hbin_prs_sk_rec( const char *desc, REGF_HBIN *hbin, int depth, REGF_SK_REC *sk )
673 prs_struct *ps = &hbin->ps;
675 uint32 data_size, start_off, end_off;
678 prs_debug(ps, depth, desc, "hbin_prs_sk_rec");
681 if ( !prs_set_offset( &hbin->ps, sk->sk_off + HBIN_HDR_SIZE - hbin->first_hbin_off ) )
684 /* backup and get the data_size */
686 if ( !prs_set_offset( &hbin->ps, prs_offset(&hbin->ps)-sizeof(uint32)) )
688 start_off = prs_offset( &hbin->ps );
689 if ( !prs_uint32( "rec_size", &hbin->ps, depth, &sk->rec_size ))
692 if ( !prs_uint8s( True, "header", ps, depth, (uint8*)sk->header, sizeof( sk->header )) )
694 if ( !prs_uint16( "tag", ps, depth, &tag))
697 if ( !prs_uint32( "prev_sk_off", ps, depth, &sk->prev_sk_off))
699 if ( !prs_uint32( "next_sk_off", ps, depth, &sk->next_sk_off))
701 if ( !prs_uint32( "ref_count", ps, depth, &sk->ref_count))
703 if ( !prs_uint32( "size", ps, depth, &sk->size))
706 if ( !sec_io_desc( "sec_desc", &sk->sec_desc, ps, depth ))
709 end_off = prs_offset( &hbin->ps );
711 /* data_size must be divisible by 8 and large enough to hold the original record */
713 data_size = ((start_off - end_off) & 0xfffffff8 );
714 if ( data_size > sk->rec_size )
715 DEBUG(10,("Encountered reused record (0x%x < 0x%x)\n", data_size, sk->rec_size));
717 if ( MARSHALLING(&hbin->ps) )
723 /*******************************************************************
724 *******************************************************************/
726 static BOOL hbin_prs_vk_rec( const char *desc, REGF_HBIN *hbin, int depth, REGF_VK_REC *vk, REGF_FILE *file )
730 prs_struct *ps = &hbin->ps;
731 uint32 data_size, start_off, end_off;
733 prs_debug(ps, depth, desc, "prs_vk_rec");
736 /* backup and get the data_size */
738 if ( !prs_set_offset( &hbin->ps, prs_offset(&hbin->ps)-sizeof(uint32)) )
740 start_off = prs_offset( &hbin->ps );
741 if ( !prs_uint32( "rec_size", &hbin->ps, depth, &vk->rec_size ))
744 if ( !prs_uint8s( True, "header", ps, depth, (uint8*)vk->header, sizeof( vk->header )) )
747 if ( MARSHALLING(&hbin->ps) )
748 name_length = strlen(vk->valuename);
750 if ( !prs_uint16( "name_length", ps, depth, &name_length ))
752 if ( !prs_uint32( "data_size", ps, depth, &vk->data_size ))
754 if ( !prs_uint32( "data_off", ps, depth, &vk->data_off ))
756 if ( !prs_uint32( "type", ps, depth, &vk->type))
758 if ( !prs_uint16( "flag", ps, depth, &vk->flag))
761 offset = prs_offset( ps );
762 offset += 2; /* skip 2 bytes */
763 prs_set_offset( ps, offset );
767 if ( vk->flag&VK_FLAG_NAME_PRESENT ) {
769 if ( UNMARSHALLING(&hbin->ps) ) {
770 if ( !(vk->valuename = PRS_ALLOC_MEM( ps, char, name_length+1 )))
773 if ( !prs_uint8s( True, "name", ps, depth, (uint8*)vk->valuename, name_length ) )
777 end_off = prs_offset( &hbin->ps );
779 /* get the data if necessary */
781 if ( vk->data_size != 0 ) {
782 BOOL charmode = False;
784 if ( (vk->type == REG_SZ) || (vk->type == REG_MULTI_SZ) )
787 /* the data is stored in the offset if the size <= 4 */
789 if ( !(vk->data_size & VK_DATA_IN_OFFSET) ) {
790 REGF_HBIN *hblock = hbin;
791 uint32 data_rec_size;
793 if ( UNMARSHALLING(&hbin->ps) ) {
794 if ( !(vk->data = PRS_ALLOC_MEM( ps, uint8, vk->data_size) ) )
798 /* this data can be in another hbin */
799 if ( !hbin_contains_offset( hbin, vk->data_off ) ) {
800 if ( !(hblock = lookup_hbin_block( file, vk->data_off )) )
803 if ( !(prs_set_offset( &hblock->ps, (vk->data_off+HBIN_HDR_SIZE-hblock->first_hbin_off)-sizeof(uint32) )) )
806 if ( MARSHALLING(&hblock->ps) ) {
807 data_rec_size = ( (vk->data_size+sizeof(uint32)) & 0xfffffff8 ) + 8;
808 data_rec_size = ( data_rec_size - 1 ) ^ 0xFFFFFFFF;
810 if ( !prs_uint32( "data_rec_size", &hblock->ps, depth, &data_rec_size ))
812 if ( !prs_uint8s( charmode, "data", &hblock->ps, depth, vk->data, vk->data_size) )
815 if ( MARSHALLING(&hblock->ps) )
816 hblock->dirty = True;
819 if ( !(vk->data = PRS_ALLOC_MEM( ps, uint8, 4 ) ) )
821 SIVAL( vk->data, 0, vk->data_off );
826 /* data_size must be divisible by 8 and large enough to hold the original record */
828 data_size = ((start_off - end_off ) & 0xfffffff8 );
829 if ( data_size != vk->rec_size )
830 DEBUG(10,("prs_vk_rec: data_size check failed (0x%x < 0x%x)\n", data_size, vk->rec_size));
832 if ( MARSHALLING(&hbin->ps) )
838 /*******************************************************************
839 read a VK record which is contained in the HBIN block stored
840 in the prs_struct *ps.
841 *******************************************************************/
843 static BOOL hbin_prs_vk_records( const char *desc, REGF_HBIN *hbin, int depth, REGF_NK_REC *nk, REGF_FILE *file )
848 prs_debug(&hbin->ps, depth, desc, "prs_vk_records");
851 /* check if we have anything to do first */
853 if ( nk->num_values == 0 )
856 if ( UNMARSHALLING(&hbin->ps) ) {
857 if ( !(nk->values = PRS_ALLOC_MEM( &hbin->ps, REGF_VK_REC, nk->num_values ) ) )
861 /* convert the offset to something relative to this HBIN block */
863 if ( !prs_set_offset( &hbin->ps, nk->values_off+HBIN_HDR_SIZE-hbin->first_hbin_off-sizeof(uint32)) )
866 if ( MARSHALLING( &hbin->ps) ) {
867 record_size = ( ( nk->num_values * sizeof(uint32) ) & 0xfffffff8 ) + 8;
868 record_size = (record_size - 1) ^ 0xFFFFFFFF;
871 if ( !prs_uint32( "record_size", &hbin->ps, depth, &record_size ) )
874 for ( i=0; i<nk->num_values; i++ ) {
875 if ( !prs_uint32( "vk_off", &hbin->ps, depth, &nk->values[i].rec_off ) )
879 for ( i=0; i<nk->num_values; i++ ) {
880 REGF_HBIN *sub_hbin = hbin;
883 if ( !hbin_contains_offset( hbin, nk->values[i].rec_off ) ) {
884 sub_hbin = lookup_hbin_block( file, nk->values[i].rec_off );
886 DEBUG(0,("hbin_prs_vk_records: Failed to find HBIN block containing offset [0x%x]\n",
887 nk->values[i].hbin_off));
892 new_offset = nk->values[i].rec_off + HBIN_HDR_SIZE - sub_hbin->first_hbin_off;
893 if ( !prs_set_offset( &sub_hbin->ps, new_offset ) )
895 if ( !hbin_prs_vk_rec( "vk_rec", sub_hbin, depth, &nk->values[i], file ) )
899 if ( MARSHALLING(&hbin->ps) )
907 /*******************************************************************
908 *******************************************************************/
910 static REGF_SK_REC* find_sk_record_by_offset( REGF_FILE *file, uint32 offset )
914 for ( p_sk=file->sec_desc_list; p_sk; p_sk=p_sk->next ) {
915 if ( p_sk->sk_off == offset )
922 /*******************************************************************
923 *******************************************************************/
925 static REGF_SK_REC* find_sk_record_by_sec_desc( REGF_FILE *file, SEC_DESC *sd )
929 for ( p=file->sec_desc_list; p; p=p->next ) {
930 if ( sec_desc_equal( p->sec_desc, sd ) )
939 /*******************************************************************
940 *******************************************************************/
942 static BOOL hbin_prs_key( REGF_FILE *file, REGF_HBIN *hbin, REGF_NK_REC *nk )
947 prs_debug(&hbin->ps, depth, "", "fetch_key");
950 /* get the initial nk record */
952 if ( !prs_nk_rec( "nk_rec", &hbin->ps, depth, nk ))
957 if ( nk->num_values && (nk->values_off!=REGF_OFFSET_NONE) ) {
959 if ( !hbin_contains_offset( hbin, nk->values_off ) ) {
960 sub_hbin = lookup_hbin_block( file, nk->values_off );
962 DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing value_list_offset [0x%x]\n",
968 if ( !hbin_prs_vk_records( "vk_rec", sub_hbin, depth, nk, file ))
972 /* now get subkeys */
974 if ( nk->num_subkeys && (nk->subkeys_off!=REGF_OFFSET_NONE) ) {
976 if ( !hbin_contains_offset( hbin, nk->subkeys_off ) ) {
977 sub_hbin = lookup_hbin_block( file, nk->subkeys_off );
979 DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing subkey_offset [0x%x]\n",
985 if ( !hbin_prs_lf_records( "lf_rec", sub_hbin, depth, nk ))
989 /* get the to the security descriptor. First look if we have already parsed it */
991 if ( (nk->sk_off!=REGF_OFFSET_NONE) && !( nk->sec_desc = find_sk_record_by_offset( file, nk->sk_off )) ) {
994 if ( !hbin_contains_offset( hbin, nk->sk_off ) ) {
995 sub_hbin = lookup_hbin_block( file, nk->sk_off );
997 DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing sk_offset [0x%x]\n",
1003 if ( !(nk->sec_desc = TALLOC_ZERO_P( file->mem_ctx, REGF_SK_REC )) )
1005 nk->sec_desc->sk_off = nk->sk_off;
1006 if ( !hbin_prs_sk_rec( "sk_rec", sub_hbin, depth, nk->sec_desc ))
1009 /* add to the list of security descriptors (ref_count has been read from the files) */
1011 nk->sec_desc->sk_off = nk->sk_off;
1012 DLIST_ADD( file->sec_desc_list, nk->sec_desc );
1018 /*******************************************************************
1019 *******************************************************************/
1021 static BOOL next_record( REGF_HBIN *hbin, const char *hdr, BOOL *eob )
1023 uint8 header[REC_HDR_SIZE];
1025 uint32 curr_off, block_size;
1027 prs_struct *ps = &hbin->ps;
1029 curr_off = prs_offset( ps );
1030 if ( curr_off == 0 )
1031 prs_set_offset( ps, HBIN_HEADER_REC_SIZE );
1033 /* assume that the current offset is at the record header
1034 and we need to backup to read the record size */
1036 curr_off -= sizeof(uint32);
1038 block_size = prs_data_size( ps );
1040 memset( header, 0x0, sizeof(uint8)*REC_HDR_SIZE );
1043 curr_off = curr_off+record_size;
1044 if ( curr_off >= block_size )
1047 if ( !prs_set_offset( &hbin->ps, curr_off) )
1050 if ( !prs_uint32( "record_size", ps, 0, &record_size ) )
1052 if ( !prs_uint8s( True, "header", ps, 0, header, REC_HDR_SIZE ) )
1055 if ( record_size & 0x80000000 ) {
1056 /* absolute_value(record_size) */
1057 record_size = (record_size ^ 0xffffffff) + 1;
1060 if ( memcmp( header, hdr, REC_HDR_SIZE ) == 0 ) {
1062 curr_off += sizeof(uint32);
1066 /* mark prs_struct as done ( at end ) if no more SK records */
1067 /* mark end-of-block as True */
1070 prs_set_offset( &hbin->ps, prs_data_size(&hbin->ps) );
1075 if ( !prs_set_offset( ps, curr_off ) )
1081 /*******************************************************************
1082 *******************************************************************/
1084 static BOOL next_nk_record( REGF_FILE *file, REGF_HBIN *hbin, REGF_NK_REC *nk, BOOL *eob )
1086 if ( next_record( hbin, "nk", eob ) && hbin_prs_key( file, hbin, nk ) )
1092 /*******************************************************************
1093 Intialize the newly created REGF_BLOCK in *file and write the
1094 block header to disk
1095 *******************************************************************/
1097 static BOOL init_regf_block( REGF_FILE *file )
1102 if ( !prs_init( &ps, REGF_BLOCKSIZE, file->mem_ctx, MARSHALL ) )
1105 memcpy( file->header, "regf", REGF_HDR_SIZE );
1106 file->data_offset = 0x20;
1107 file->last_block = 0x1000;
1111 unix_to_nt_time( &file->mtime, time(NULL) );
1113 /* hard coded values...no diea what these are ... maybe in time */
1115 file->unknown1 = 0x2;
1116 file->unknown2 = 0x1;
1117 file->unknown3 = 0x3;
1118 file->unknown4 = 0x0;
1119 file->unknown5 = 0x1;
1120 file->unknown6 = 0x1;
1122 /* write header to the buffer */
1124 if ( !prs_regf_block( "regf_header", &ps, 0, file ) ) {
1129 /* calculate the checksum, re-marshall data (to include the checksum)
1130 and write to disk */
1132 file->checksum = regf_block_checksum( &ps );
1133 prs_set_offset( &ps, 0 );
1134 if ( !prs_regf_block( "regf_header", &ps, 0, file ) ) {
1139 if ( write_block( file, &ps, 0 ) == -1 ) {
1140 DEBUG(0,("init_regf_block: Failed to initialize registry header block!\n"));
1146 prs_mem_free( &ps );
1150 /*******************************************************************
1151 Open the registry file and then read in the REGF block to get the
1153 *******************************************************************/
1155 REGF_FILE* regfio_open( const char *filename, int flags, int mode )
1159 if ( !(rb = SMB_MALLOC_P(REGF_FILE)) ) {
1160 DEBUG(0,("ERROR allocating memory\n"));
1166 if ( !(rb->mem_ctx = talloc_init( "read_regf_block" )) ) {
1171 rb->open_flags = flags;
1173 /* open and existing file */
1175 if ( (rb->fd = open(filename, flags, mode)) == -1 ) {
1176 DEBUG(0,("regfio_open: failure to open %s (%s)\n", filename, strerror(errno)));
1181 /* check if we are creating a new file or overwriting an existing one */
1183 if ( flags & (O_CREAT|O_TRUNC) ) {
1184 if ( !init_regf_block( rb ) ) {
1185 DEBUG(0,("regfio_open: Failed to read initial REGF block\n"));
1194 /* read in an existing file */
1196 if ( !read_regf_block( rb ) ) {
1197 DEBUG(0,("regfio_open: Failed to read initial REGF block\n"));
1207 /*******************************************************************
1208 *******************************************************************/
1210 static void regfio_mem_free( REGF_FILE *file )
1212 /* free any talloc()'d memory */
1214 if ( file && file->mem_ctx )
1215 talloc_destroy( file->mem_ctx );
1218 /*******************************************************************
1219 *******************************************************************/
1221 int regfio_close( REGF_FILE *file )
1225 /* cleanup for a file opened for write */
1227 if ( file->open_flags & (O_WRONLY|O_RDWR) ) {
1231 /* write of sd list */
1233 for ( sk=file->sec_desc_list; sk; sk=sk->next ) {
1234 hbin_prs_sk_rec( "sk_rec", sk->hbin, 0, sk );
1237 /* flush any dirty blocks */
1239 while ( file->block_list ) {
1240 hbin_block_close( file, file->block_list );
1245 unix_to_nt_time( &file->mtime, time(NULL) );
1247 if ( read_block( file, &ps, 0, REGF_BLOCKSIZE ) != -1 ) {
1248 /* now use for writing */
1249 prs_switch_type( &ps, MARSHALL );
1251 /* stream the block once, generate the checksum,
1252 and stream it again */
1253 prs_set_offset( &ps, 0 );
1254 prs_regf_block( "regf_blocK", &ps, 0, file );
1255 file->checksum = regf_block_checksum( &ps );
1256 prs_set_offset( &ps, 0 );
1257 prs_regf_block( "regf_blocK", &ps, 0, file );
1259 /* now we are ready to write it to disk */
1260 if ( write_block( file, &ps, 0 ) == -1 )
1261 DEBUG(0,("regfio_close: failed to update the regf header block!\n"));
1264 prs_mem_free( &ps );
1267 regfio_mem_free( file );
1269 /* nothing tdo do if there is no open file */
1271 if ( !file || (file->fd == -1) )
1281 /*******************************************************************
1282 *******************************************************************/
1284 static void regfio_flush( REGF_FILE *file )
1288 for ( hbin=file->block_list; hbin; hbin=hbin->next ) {
1289 write_hbin_block( file, hbin );
1293 /*******************************************************************
1294 There should be only *one* root key in the registry file based
1295 on my experience. --jerry
1296 *******************************************************************/
1298 REGF_NK_REC* regfio_rootkey( REGF_FILE *file )
1302 uint32 offset = REGF_BLOCKSIZE;
1309 if ( !(nk = TALLOC_ZERO_P( file->mem_ctx, REGF_NK_REC )) ) {
1310 DEBUG(0,("regfio_rootkey: talloc() failed!\n"));
1314 /* scan through the file on HBIN block at a time looking
1315 for an NK record with a type == 0x002c.
1316 Normally this is the first nk record in the first hbin
1317 block (but I'm not assuming that for now) */
1319 while ( (hbin = read_hbin_block( file, offset )) ) {
1323 if ( next_nk_record( file, hbin, nk, &eob ) ) {
1324 if ( nk->key_type == NK_TYPE_ROOTKEY ) {
1329 prs_mem_free( &hbin->ps );
1335 offset += hbin->block_size;
1339 DEBUG(0,("regfio_rootkey: corrupt registry file ? No root key record located\n"));
1343 DLIST_ADD( file->block_list, hbin );
1348 /*******************************************************************
1349 This acts as an interator over the subkeys defined for a given
1350 NK record. Remember that offsets are from the *first* HBIN block.
1351 *******************************************************************/
1353 REGF_NK_REC* regfio_fetch_subkey( REGF_FILE *file, REGF_NK_REC *nk )
1355 REGF_NK_REC *subkey;
1359 /* see if there is anything left to report */
1361 if ( !nk || (nk->subkeys_off==REGF_OFFSET_NONE) || (nk->subkey_index >= nk->num_subkeys) )
1364 /* find the HBIN block which should contain the nk record */
1366 if ( !(hbin = lookup_hbin_block( file, nk->subkeys.hashes[nk->subkey_index].nk_off )) ) {
1367 DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing offset [0x%x]\n",
1368 nk->subkeys.hashes[nk->subkey_index].nk_off));
1372 nk_offset = nk->subkeys.hashes[nk->subkey_index].nk_off;
1373 if ( !prs_set_offset( &hbin->ps, (HBIN_HDR_SIZE + nk_offset - hbin->first_hbin_off) ) )
1377 if ( !(subkey = TALLOC_ZERO_P( file->mem_ctx, REGF_NK_REC )) )
1380 if ( !hbin_prs_key( file, hbin, subkey ) )
1387 /*******************************************************************
1388 *******************************************************************/
1390 static REGF_HBIN* regf_hbin_allocate( REGF_FILE *file, uint32 block_size )
1393 SMB_STRUCT_STAT sbuf;
1395 if ( !(hbin = TALLOC_ZERO_P( file->mem_ctx, REGF_HBIN )) )
1398 memcpy( hbin->header, "hbin", sizeof(HBIN_HDR_SIZE) );
1401 if ( sys_fstat( file->fd, &sbuf ) ) {
1402 DEBUG(0,("regf_hbin_allocate: stat() failed! (%s)\n", strerror(errno)));
1406 hbin->file_off = sbuf.st_size;
1408 hbin->free_off = HBIN_HEADER_REC_SIZE;
1409 hbin->free_size = block_size - hbin->free_off + sizeof(uint32);;
1411 hbin->block_size = block_size;
1412 hbin->first_hbin_off = hbin->file_off - REGF_BLOCKSIZE;
1414 if ( !prs_init( &hbin->ps, block_size, file->mem_ctx, MARSHALL ) )
1417 if ( !prs_hbin_block( "new_hbin", &hbin->ps, 0, hbin ) )
1420 if ( !write_hbin_block( file, hbin ) )
1423 file->last_block = hbin->file_off;
1428 /*******************************************************************
1429 *******************************************************************/
1431 static void update_free_space( REGF_HBIN *hbin, uint32 size_used )
1433 hbin->free_off += size_used;
1434 hbin->free_size -= size_used;
1436 if ( hbin->free_off >= hbin->block_size ) {
1437 hbin->free_off = REGF_OFFSET_NONE;
1443 /*******************************************************************
1444 *******************************************************************/
1446 static REGF_HBIN* find_free_space( REGF_FILE *file, uint32 size )
1448 REGF_HBIN *hbin, *p_hbin;
1452 /* check open block list */
1454 for ( hbin=file->block_list; hbin!=NULL; hbin=hbin->next ) {
1455 /* only check blocks that actually have available space */
1457 if ( hbin->free_off == REGF_OFFSET_NONE )
1460 /* check for a large enough available chunk */
1462 if ( (hbin->block_size - hbin->free_off) >= size ) {
1463 DLIST_PROMOTE( file->block_list, hbin );
1468 /* parse the file until we find a block with
1469 enough free space; save the last non-filled hbin */
1471 block_off = REGF_BLOCKSIZE;
1473 /* cleanup before the next round */
1476 prs_mem_free( &hbin->ps );
1478 hbin = read_hbin_block( file, block_off );
1482 /* make sure that we don't already have this block in memory */
1484 for ( p_hbin=file->block_list; p_hbin!=NULL; p_hbin=p_hbin->next ) {
1485 if ( p_hbin->file_off == hbin->file_off ) {
1491 block_off = hbin->file_off + hbin->block_size;
1494 prs_mem_free( &hbin->ps );
1499 /* if (cached block or (new block and not enough free space)) then continue looping */
1500 } while ( cached || (hbin && (hbin->free_size < size)) );
1502 /* no free space; allocate a new one */
1507 /* allocate in multiples of REGF_ALLOC_BLOCK; make sure (size + hbin_header) fits */
1509 alloc_size = (((size+HBIN_HEADER_REC_SIZE) / REGF_ALLOC_BLOCK ) + 1 ) * REGF_ALLOC_BLOCK;
1511 if ( !(hbin = regf_hbin_allocate( file, alloc_size )) ) {
1512 DEBUG(0,("find_free_space: regf_hbin_allocate() failed!\n"));
1515 DLIST_ADD( file->block_list, hbin );
1519 /* set the offset to be ready to write */
1521 if ( !prs_set_offset( &hbin->ps, hbin->free_off-sizeof(uint32) ) )
1524 /* write the record size as a placeholder for now, it should be
1525 probably updated by the caller once it all of the data necessary
1528 if ( !prs_uint32("allocated_size", &hbin->ps, 0, &size) )
1531 update_free_space( hbin, size );
1536 /*******************************************************************
1537 *******************************************************************/
1539 static uint32 sk_record_data_size( SEC_DESC * sd )
1541 uint32 size, size_mod8;
1545 /* the record size is sizeof(hdr) + name + static members + data_size_field */
1547 size = sizeof(uint32)*5 + sec_desc_size( sd ) + sizeof(uint32);
1550 size_mod8 = size & 0xfffffff8;
1551 if ( size_mod8 < size )
1557 /*******************************************************************
1558 *******************************************************************/
1560 static uint32 vk_record_data_size( REGF_VK_REC *vk )
1562 uint32 size, size_mod8;
1566 /* the record size is sizeof(hdr) + name + static members + data_size_field */
1568 size = REC_HDR_SIZE + (sizeof(uint16)*3) + (sizeof(uint32)*3) + sizeof(uint32);
1570 if ( vk->valuename )
1571 size += strlen(vk->valuename);
1574 size_mod8 = size & 0xfffffff8;
1575 if ( size_mod8 < size )
1581 /*******************************************************************
1582 *******************************************************************/
1584 static uint32 lf_record_data_size( uint32 num_keys )
1586 uint32 size, size_mod8;
1590 /* the record size is sizeof(hdr) + num_keys + sizeof of hash_array + data_size_uint32 */
1592 size = REC_HDR_SIZE + sizeof(uint16) + (sizeof(REGF_HASH_REC) * num_keys) + sizeof(uint32);
1595 size_mod8 = size & 0xfffffff8;
1596 if ( size_mod8 < size )
1602 /*******************************************************************
1603 *******************************************************************/
1605 static uint32 nk_record_data_size( REGF_NK_REC *nk )
1607 uint32 size, size_mod8;
1611 /* the record size is static + length_of_keyname + length_of_classname + data_size_uint32 */
1613 size = 0x4c + strlen(nk->keyname) + sizeof(uint32);
1615 if ( nk->classname )
1616 size += strlen( nk->classname );
1619 size_mod8 = size & 0xfffffff8;
1620 if ( size_mod8 < size )
1626 /*******************************************************************
1627 *******************************************************************/
1629 static BOOL create_vk_record( REGF_FILE *file, REGF_VK_REC *vk, REGISTRY_VALUE *value )
1631 char *name = regval_name(value);
1632 REGF_HBIN *data_hbin;
1636 memcpy( vk->header, "vk", REC_HDR_SIZE );
1639 vk->valuename = talloc_strdup( file->mem_ctx, regval_name(value) );
1640 vk->flag = VK_FLAG_NAME_PRESENT;
1643 vk->data_size = regval_size( value );
1644 vk->type = regval_type( value );
1646 if ( vk->data_size > sizeof(uint32) ) {
1647 uint32 data_size = ( (vk->data_size+sizeof(uint32)) & 0xfffffff8 ) + 8;
1649 vk->data = TALLOC_MEMDUP( file->mem_ctx, regval_data_p(value), vk->data_size );
1651 /* go ahead and store the offset....we'll pick this hbin block back up when
1652 we stream the data */
1654 data_hbin = find_free_space(file, data_size );
1655 vk->data_off = prs_offset( &data_hbin->ps ) + data_hbin->first_hbin_off - HBIN_HDR_SIZE;
1658 /* make sure we don't try to copy from a NULL value pointer */
1660 if ( vk->data_size != 0 )
1661 memcpy( &vk->data_off, regval_data_p(value), sizeof(uint32) );
1662 vk->data_size |= VK_DATA_IN_OFFSET;
1668 /*******************************************************************
1669 *******************************************************************/
1671 static int hashrec_cmp( REGF_HASH_REC *h1, REGF_HASH_REC *h2 )
1673 return StrCaseCmp( h1->fullname, h2->fullname );
1676 /*******************************************************************
1677 *******************************************************************/
1679 REGF_NK_REC* regfio_write_key( REGF_FILE *file, const char *name,
1680 REGVAL_CTR *values, REGSUBKEY_CTR *subkeys,
1681 SEC_DESC *sec_desc, REGF_NK_REC *parent )
1684 REGF_HBIN *vlist_hbin = NULL;
1687 if ( !(nk = TALLOC_ZERO_P( file->mem_ctx, REGF_NK_REC )) )
1690 memcpy( nk->header, "nk", REC_HDR_SIZE );
1693 nk->key_type = NK_TYPE_ROOTKEY;
1695 nk->key_type = NK_TYPE_NORMALKEY;
1697 /* store the parent offset (or -1 if a the root key */
1699 nk->parent_off = parent ? (parent->hbin_off + parent->hbin->file_off - REGF_BLOCKSIZE - HBIN_HDR_SIZE ) : REGF_OFFSET_NONE;
1701 /* no classname currently */
1703 nk->classname_off = REGF_OFFSET_NONE;
1704 nk->classname = NULL;
1705 nk->keyname = talloc_strdup( file->mem_ctx, name );
1707 /* current modification time */
1709 unix_to_nt_time( &nk->mtime, time(NULL) );
1711 /* allocate the record on disk */
1713 size = nk_record_data_size( nk );
1714 nk->rec_size = ( size - 1 ) ^ 0XFFFFFFFF;
1715 nk->hbin = find_free_space( file, size );
1716 nk->hbin_off = prs_offset( &nk->hbin->ps );
1718 /* Update the hash record in the parent */
1721 REGF_HASH_REC *hash = &parent->subkeys.hashes[parent->subkey_index];
1723 hash->nk_off = prs_offset( &nk->hbin->ps ) + nk->hbin->first_hbin_off - HBIN_HDR_SIZE;
1724 memcpy( hash->keycheck, name, sizeof(uint32) );
1725 hash->fullname = talloc_strdup( file->mem_ctx, name );
1726 parent->subkey_index++;
1728 /* sort the list by keyname */
1730 qsort( parent->subkeys.hashes, parent->subkey_index, sizeof(REGF_HASH_REC), QSORT_CAST hashrec_cmp );
1732 if ( !hbin_prs_lf_records( "lf_rec", parent->subkeys.hbin, 0, parent ) )
1736 /* write the security descriptor */
1738 nk->sk_off = REGF_OFFSET_NONE;
1740 uint32 sk_size = sk_record_data_size( sec_desc );
1742 REGF_SK_REC *tmp = NULL;
1744 /* search for it in the existing list of sd's */
1746 if ( (nk->sec_desc = find_sk_record_by_sec_desc( file, sec_desc )) == NULL ) {
1747 /* not found so add it to the list */
1749 sk_hbin = find_free_space( file, sk_size );
1751 if ( !(nk->sec_desc = TALLOC_ZERO_P( file->mem_ctx, REGF_SK_REC )) )
1754 /* now we have to store the security descriptor in the list and
1755 update the offsets */
1757 memcpy( nk->sec_desc->header, "sk", REC_HDR_SIZE );
1758 nk->sec_desc->hbin = sk_hbin;
1759 nk->sec_desc->hbin_off = prs_offset( &sk_hbin->ps );
1760 nk->sec_desc->sk_off = prs_offset( &sk_hbin->ps ) + sk_hbin->first_hbin_off - HBIN_HDR_SIZE;
1761 nk->sec_desc->rec_size = (sk_size-1) ^ 0xFFFFFFFF;
1763 nk->sec_desc->sec_desc = sec_desc;
1764 nk->sec_desc->ref_count = 0;
1766 /* size value must be self-inclusive */
1767 nk->sec_desc->size = sec_desc_size(sec_desc) + sizeof(uint32);
1769 DLIST_ADD_END( file->sec_desc_list, nk->sec_desc, tmp );
1771 /* update the offsets for us and the previous sd in the list.
1772 if this is the first record, then just set the next and prev
1773 offsets to ourself. */
1775 if ( nk->sec_desc->prev ) {
1776 REGF_SK_REC *prev = nk->sec_desc->prev;
1778 nk->sec_desc->prev_sk_off = prev->hbin_off + prev->hbin->first_hbin_off - HBIN_HDR_SIZE;
1779 prev->next_sk_off = nk->sec_desc->sk_off;
1781 /* the end must loop around to the front */
1782 nk->sec_desc->next_sk_off = file->sec_desc_list->sk_off;
1784 /* and first must loop around to the tail */
1785 file->sec_desc_list->prev_sk_off = nk->sec_desc->sk_off;
1787 nk->sec_desc->prev_sk_off = nk->sec_desc->sk_off;
1788 nk->sec_desc->next_sk_off = nk->sec_desc->sk_off;
1792 /* bump the reference count +1 */
1794 nk->sk_off = nk->sec_desc->sk_off;
1795 nk->sec_desc->ref_count++;
1798 /* write the subkeys */
1800 nk->subkeys_off = REGF_OFFSET_NONE;
1801 if ( (nk->num_subkeys = regsubkey_ctr_numkeys( subkeys )) != 0 ) {
1802 uint32 lf_size = lf_record_data_size( nk->num_subkeys );
1806 nk->subkeys.hbin = find_free_space( file, lf_size );
1807 nk->subkeys.hbin_off = prs_offset( &nk->subkeys.hbin->ps );
1808 nk->subkeys.rec_size = (lf_size-1) ^ 0xFFFFFFFF;
1809 nk->subkeys_off = prs_offset( &nk->subkeys.hbin->ps ) + nk->subkeys.hbin->first_hbin_off - HBIN_HDR_SIZE;
1811 memcpy( nk->subkeys.header, "lf", REC_HDR_SIZE );
1813 nk->subkeys.num_keys = nk->num_subkeys;
1814 if ( !(nk->subkeys.hashes = TALLOC_ZERO_ARRAY( file->mem_ctx, REGF_HASH_REC, nk->subkeys.num_keys )) )
1816 nk->subkey_index = 0;
1818 /* update the max_bytes_subkey{name,classname} fields */
1819 for ( i=0; i<nk->num_subkeys; i++ ) {
1820 namelen = strlen( regsubkey_ctr_specific_key(subkeys, i) );
1821 if ( namelen*2 > nk->max_bytes_subkeyname )
1822 nk->max_bytes_subkeyname = namelen * 2;
1826 /* write the values */
1828 nk->values_off = REGF_OFFSET_NONE;
1829 if ( (nk->num_values = regval_ctr_numvals( values )) != 0 ) {
1830 uint32 vlist_size = ( ( nk->num_values * sizeof(uint32) ) & 0xfffffff8 ) + 8;
1833 vlist_hbin = find_free_space( file, vlist_size );
1834 nk->values_off = prs_offset( &vlist_hbin->ps ) + vlist_hbin->first_hbin_off - HBIN_HDR_SIZE;
1836 if ( !(nk->values = TALLOC_ARRAY( file->mem_ctx, REGF_VK_REC, nk->num_values )) )
1839 /* create the vk records */
1841 for ( i=0; i<nk->num_values; i++ ) {
1842 uint32 vk_size, namelen, datalen;
1845 r = regval_ctr_specific_value( values, i );
1846 create_vk_record( file, &nk->values[i], r );
1847 vk_size = vk_record_data_size( &nk->values[i] );
1848 nk->values[i].hbin = find_free_space( file, vk_size );
1849 nk->values[i].hbin_off = prs_offset( &nk->values[i].hbin->ps );
1850 nk->values[i].rec_size = ( vk_size - 1 ) ^ 0xFFFFFFFF;
1851 nk->values[i].rec_off = prs_offset( &nk->values[i].hbin->ps )
1852 + nk->values[i].hbin->first_hbin_off
1855 /* update the max bytes fields if necessary */
1857 namelen = strlen( regval_name(r) );
1858 if ( namelen*2 > nk->max_bytes_valuename )
1859 nk->max_bytes_valuename = namelen * 2;
1861 datalen = regval_size( r );
1862 if ( datalen > nk->max_bytes_value )
1863 nk->max_bytes_value = datalen;
1867 /* stream the records */
1869 prs_set_offset( &nk->hbin->ps, nk->hbin_off );
1870 if ( !prs_nk_rec( "nk_rec", &nk->hbin->ps, 0, nk ) )
1873 if ( nk->num_values ) {
1874 if ( !hbin_prs_vk_records( "vk_records", vlist_hbin, 0, nk, file ) )
1879 regfio_flush( file );