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 3 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, see <http://www.gnu.org/licenses/>.
22 #include "../librpc/gen_ndr/ndr_security.h"
25 #define DBGC_CLASS DBGC_REGISTRY
27 /*******************************************************************
29 * TODO : Right now this code basically ignores classnames.
31 ******************************************************************/
33 #if defined(PARANOID_MALLOC_CHECKER)
34 #define PRS_ALLOC_MEM(ps, type, count) (type *)prs_alloc_mem_((ps),sizeof(type),(count))
36 #define PRS_ALLOC_MEM(ps, type, count) (type *)prs_alloc_mem((ps),sizeof(type),(count))
39 /*******************************************************************
40 Reads or writes an NTTIME structure.
41 ********************************************************************/
43 static bool smb_io_time(const char *desc, NTTIME *nttime, prs_struct *ps, int depth)
49 prs_debug(ps, depth, desc, "smb_io_time");
55 if (MARSHALLING(ps)) {
56 low = *nttime & 0xFFFFFFFF;
60 if(!prs_uint32("low ", ps, depth, &low)) /* low part */
62 if(!prs_uint32("high", ps, depth, &high)) /* high part */
65 if (UNMARSHALLING(ps)) {
66 *nttime = (((uint64_t)high << 32) + low);
72 /*******************************************************************
73 *******************************************************************/
75 static int write_block( REGF_FILE *file, prs_struct *ps, uint32 offset )
77 int bytes_written, returned;
78 char *buffer = prs_data_p( ps );
79 uint32 buffer_size = prs_data_size( ps );
85 /* check for end of file */
87 if (sys_fstat(file->fd, &sbuf, false)) {
88 DEBUG(0,("write_block: stat() failed! (%s)\n", strerror(errno)));
92 if ( lseek( file->fd, offset, SEEK_SET ) == -1 ) {
93 DEBUG(0,("write_block: lseek() failed! (%s)\n", strerror(errno) ));
97 bytes_written = returned = 0;
98 while ( bytes_written < buffer_size ) {
99 if ( (returned = write( file->fd, buffer+bytes_written, buffer_size-bytes_written )) == -1 ) {
100 DEBUG(0,("write_block: write() failed! (%s)\n", strerror(errno) ));
104 bytes_written += returned;
107 return bytes_written;
110 /*******************************************************************
111 *******************************************************************/
113 static int read_block( REGF_FILE *file, prs_struct *ps, uint32 file_offset, uint32 block_size )
115 int bytes_read, returned;
117 SMB_STRUCT_STAT sbuf;
119 /* check for end of file */
121 if (sys_fstat(file->fd, &sbuf, false)) {
122 DEBUG(0,("read_block: stat() failed! (%s)\n", strerror(errno)));
126 if ( (size_t)file_offset >= sbuf.st_ex_size )
129 /* if block_size == 0, we are parsing HBIN records and need
130 to read some of the header to get the block_size from there */
132 if ( block_size == 0 ) {
135 if ( lseek( file->fd, file_offset, SEEK_SET ) == -1 ) {
136 DEBUG(0,("read_block: lseek() failed! (%s)\n", strerror(errno) ));
140 returned = read( file->fd, hdr, 0x20 );
141 if ( (returned == -1) || (returned < 0x20) ) {
142 DEBUG(0,("read_block: failed to read in HBIN header. Is the file corrupt?\n"));
146 /* make sure this is an hbin header */
148 if ( strncmp( hdr, "hbin", HBIN_HDR_SIZE ) != 0 ) {
149 DEBUG(0,("read_block: invalid block header!\n"));
153 block_size = IVAL( hdr, 0x08 );
156 DEBUG(10,("read_block: block_size == 0x%x\n", block_size ));
158 /* set the offset, initialize the buffer, and read the block from disk */
160 if ( lseek( file->fd, file_offset, SEEK_SET ) == -1 ) {
161 DEBUG(0,("read_block: lseek() failed! (%s)\n", strerror(errno) ));
165 if (!prs_init( ps, block_size, file->mem_ctx, UNMARSHALL )) {
166 DEBUG(0,("read_block: prs_init() failed! (%s)\n", strerror(errno) ));
169 buffer = prs_data_p( ps );
170 bytes_read = returned = 0;
172 while ( bytes_read < block_size ) {
173 if ( (returned = read( file->fd, buffer+bytes_read, block_size-bytes_read )) == -1 ) {
174 DEBUG(0,("read_block: read() failed (%s)\n", strerror(errno) ));
177 if ( (returned == 0) && (bytes_read < block_size) ) {
178 DEBUG(0,("read_block: not a vald registry file ?\n" ));
182 bytes_read += returned;
188 /*******************************************************************
189 *******************************************************************/
191 static bool write_hbin_block( REGF_FILE *file, REGF_HBIN *hbin )
196 /* write free space record if any is available */
198 if ( hbin->free_off != REGF_OFFSET_NONE ) {
199 uint32 header = 0xffffffff;
201 if ( !prs_set_offset( &hbin->ps, hbin->free_off-sizeof(uint32) ) )
203 if ( !prs_uint32( "free_size", &hbin->ps, 0, &hbin->free_size ) )
205 if ( !prs_uint32( "free_header", &hbin->ps, 0, &header ) )
209 hbin->dirty = (write_block( file, &hbin->ps, hbin->file_off ) != -1);
214 /*******************************************************************
215 *******************************************************************/
217 static bool hbin_block_close( REGF_FILE *file, REGF_HBIN *hbin )
221 /* remove the block from the open list and flush it to disk */
223 for ( p=file->block_list; p && p!=hbin; p=p->next )
227 DLIST_REMOVE( file->block_list, hbin );
230 DEBUG(0,("hbin_block_close: block not in open list!\n"));
232 if ( !write_hbin_block( file, hbin ) )
238 /*******************************************************************
239 *******************************************************************/
241 static bool prs_regf_block( const char *desc, prs_struct *ps, int depth, REGF_FILE *file )
243 prs_debug(ps, depth, desc, "prs_regf_block");
246 if ( !prs_uint8s( True, "header", ps, depth, (uint8*)file->header, sizeof( file->header )) )
249 /* yes, these values are always identical so store them only once */
251 if ( !prs_uint32( "unknown1", ps, depth, &file->unknown1 ))
253 if ( !prs_uint32( "unknown1 (again)", ps, depth, &file->unknown1 ))
256 /* get the modtime */
258 if ( !prs_set_offset( ps, 0x0c ) )
260 if ( !smb_io_time( "modtime", &file->mtime, ps, depth ) )
265 if ( !prs_uint32( "unknown2", ps, depth, &file->unknown2 ))
267 if ( !prs_uint32( "unknown3", ps, depth, &file->unknown3 ))
269 if ( !prs_uint32( "unknown4", ps, depth, &file->unknown4 ))
271 if ( !prs_uint32( "unknown5", ps, depth, &file->unknown5 ))
274 /* get file offsets */
276 if ( !prs_set_offset( ps, 0x24 ) )
278 if ( !prs_uint32( "data_offset", ps, depth, &file->data_offset ))
280 if ( !prs_uint32( "last_block", ps, depth, &file->last_block ))
283 /* one more constant */
285 if ( !prs_uint32( "unknown6", ps, depth, &file->unknown6 ))
288 /* get the checksum */
290 if ( !prs_set_offset( ps, 0x01fc ) )
292 if ( !prs_uint32( "checksum", ps, depth, &file->checksum ))
298 /*******************************************************************
299 *******************************************************************/
301 static bool prs_hbin_block( const char *desc, prs_struct *ps, int depth, REGF_HBIN *hbin )
305 prs_debug(ps, depth, desc, "prs_regf_block");
308 if ( !prs_uint8s( True, "header", ps, depth, (uint8*)hbin->header, sizeof( hbin->header )) )
311 if ( !prs_uint32( "first_hbin_off", ps, depth, &hbin->first_hbin_off ))
314 /* The dosreg.cpp comments say that the block size is at 0x1c.
315 According to a WINXP NTUSER.dat file, this is wrong. The block_size
318 if ( !prs_uint32( "block_size", ps, depth, &hbin->block_size ))
321 block_size2 = hbin->block_size;
322 prs_set_offset( ps, 0x1c );
323 if ( !prs_uint32( "block_size2", ps, depth, &block_size2 ))
326 if ( MARSHALLING(ps) )
333 /*******************************************************************
334 *******************************************************************/
336 static bool prs_nk_rec( const char *desc, prs_struct *ps, int depth, REGF_NK_REC *nk )
338 uint16 class_length, name_length;
340 uint32 data_size, start_off, end_off;
341 uint32 unknown_off = REGF_OFFSET_NONE;
343 nk->hbin_off = prs_offset( ps );
344 start = nk->hbin_off;
346 prs_debug(ps, depth, desc, "prs_nk_rec");
349 /* back up and get the data_size */
351 if ( !prs_set_offset( ps, prs_offset(ps)-sizeof(uint32)) )
353 start_off = prs_offset( ps );
354 if ( !prs_uint32( "rec_size", ps, depth, &nk->rec_size ))
357 if ( !prs_uint8s( True, "header", ps, depth, (uint8*)nk->header, sizeof( nk->header )) )
360 if ( !prs_uint16( "key_type", ps, depth, &nk->key_type ))
362 if ( !smb_io_time( "mtime", &nk->mtime, ps, depth ))
365 if ( !prs_set_offset( ps, start+0x0010 ) )
367 if ( !prs_uint32( "parent_off", ps, depth, &nk->parent_off ))
369 if ( !prs_uint32( "num_subkeys", ps, depth, &nk->num_subkeys ))
372 if ( !prs_set_offset( ps, start+0x001c ) )
374 if ( !prs_uint32( "subkeys_off", ps, depth, &nk->subkeys_off ))
376 if ( !prs_uint32( "unknown_off", ps, depth, &unknown_off) )
379 if ( !prs_set_offset( ps, start+0x0024 ) )
381 if ( !prs_uint32( "num_values", ps, depth, &nk->num_values ))
383 if ( !prs_uint32( "values_off", ps, depth, &nk->values_off ))
385 if ( !prs_uint32( "sk_off", ps, depth, &nk->sk_off ))
387 if ( !prs_uint32( "classname_off", ps, depth, &nk->classname_off ))
390 if ( !prs_uint32( "max_bytes_subkeyname", ps, depth, &nk->max_bytes_subkeyname))
392 if ( !prs_uint32( "max_bytes_subkeyclassname", ps, depth, &nk->max_bytes_subkeyclassname))
394 if ( !prs_uint32( "max_bytes_valuename", ps, depth, &nk->max_bytes_valuename))
396 if ( !prs_uint32( "max_bytes_value", ps, depth, &nk->max_bytes_value))
398 if ( !prs_uint32( "unknown index", ps, depth, &nk->unk_index))
401 name_length = nk->keyname ? strlen(nk->keyname) : 0 ;
402 class_length = nk->classname ? strlen(nk->classname) : 0 ;
403 if ( !prs_uint16( "name_length", ps, depth, &name_length ))
405 if ( !prs_uint16( "class_length", ps, depth, &class_length ))
408 if ( class_length ) {
413 if ( UNMARSHALLING(ps) ) {
414 if ( !(nk->keyname = PRS_ALLOC_MEM( ps, char, name_length+1 )) )
418 if ( !prs_uint8s( True, "name", ps, depth, (uint8*)nk->keyname, name_length) )
421 if ( UNMARSHALLING(ps) )
422 nk->keyname[name_length] = '\0';
425 end_off = prs_offset( ps );
427 /* data_size must be divisible by 8 and large enough to hold the original record */
429 data_size = ((start_off - end_off) & 0xfffffff8 );
430 if ( data_size > nk->rec_size )
431 DEBUG(10,("Encountered reused record (0x%x < 0x%x)\n", data_size, nk->rec_size));
433 if ( MARSHALLING(ps) )
434 nk->hbin->dirty = True;
439 /*******************************************************************
440 *******************************************************************/
442 static uint32 regf_block_checksum( prs_struct *ps )
444 char *buffer = prs_data_p( ps );
448 /* XOR of all bytes 0x0000 - 0x01FB */
452 for ( i=0; i<0x01FB; i+=4 ) {
453 x = IVAL(buffer, i );
460 /*******************************************************************
461 *******************************************************************/
463 static bool read_regf_block( REGF_FILE *file )
468 /* grab the first block from the file */
470 if ( read_block( file, &ps, 0, REGF_BLOCKSIZE ) == -1 )
473 /* parse the block and verify the checksum */
475 if ( !prs_regf_block( "regf_header", &ps, 0, file ) )
478 checksum = regf_block_checksum( &ps );
482 if ( file->checksum != checksum ) {
483 DEBUG(0,("read_regf_block: invalid checksum\n" ));
490 /*******************************************************************
491 *******************************************************************/
493 static REGF_HBIN* read_hbin_block( REGF_FILE *file, off_t offset )
496 uint32 record_size, curr_off, block_size, header;
498 if ( !(hbin = TALLOC_ZERO_P(file->mem_ctx, REGF_HBIN)) )
500 hbin->file_off = offset;
503 if ( read_block( file, &hbin->ps, offset, 0 ) == -1 )
506 if ( !prs_hbin_block( "hbin", &hbin->ps, 0, hbin ) )
509 /* this should be the same thing as hbin->block_size but just in case */
511 block_size = prs_data_size( &hbin->ps );
513 /* Find the available free space offset. Always at the end,
514 so walk the record list and stop when you get to the end.
515 The end is defined by a record header of 0xffffffff. The
516 previous 4 bytes contains the amount of free space remaining
517 in the hbin block. */
519 /* remember that the record_size is in the 4 bytes preceeding the record itself */
521 if ( !prs_set_offset( &hbin->ps, file->data_offset+HBIN_HDR_SIZE-sizeof(uint32) ) )
526 curr_off = prs_offset( &hbin->ps );
527 while ( header != 0xffffffff ) {
528 /* not done yet so reset the current offset to the
529 next record_size field */
531 curr_off = curr_off+record_size;
533 /* for some reason the record_size of the last record in
534 an hbin block can extend past the end of the block
535 even though the record fits within the remaining
536 space....aaarrrgggghhhhhh */
538 if ( curr_off >= block_size ) {
544 if ( !prs_set_offset( &hbin->ps, curr_off) )
547 if ( !prs_uint32( "rec_size", &hbin->ps, 0, &record_size ) )
549 if ( !prs_uint32( "header", &hbin->ps, 0, &header ) )
552 SMB_ASSERT( record_size != 0 );
554 if ( record_size & 0x80000000 ) {
555 /* absolute_value(record_size) */
556 record_size = (record_size ^ 0xffffffff) + 1;
560 /* save the free space offset */
562 if ( header == 0xffffffff ) {
564 /* account for the fact that the curr_off is 4 bytes behind the actual
567 hbin->free_off = curr_off + sizeof(uint32);
568 hbin->free_size = record_size;
571 DEBUG(10,("read_hbin_block: free space offset == 0x%x\n", hbin->free_off));
573 if ( !prs_set_offset( &hbin->ps, file->data_offset+HBIN_HDR_SIZE ) )
579 /*******************************************************************
580 Input a random offset and receive the corresponding HBIN
582 *******************************************************************/
584 static bool hbin_contains_offset( REGF_HBIN *hbin, uint32 offset )
589 if ( (offset > hbin->first_hbin_off) && (offset < (hbin->first_hbin_off+hbin->block_size)) )
595 /*******************************************************************
596 Input a random offset and receive the corresponding HBIN
598 *******************************************************************/
600 static REGF_HBIN* lookup_hbin_block( REGF_FILE *file, uint32 offset )
602 REGF_HBIN *hbin = NULL;
605 /* start with the open list */
607 for ( hbin=file->block_list; hbin; hbin=hbin->next ) {
608 DEBUG(10,("lookup_hbin_block: address = 0x%x [0x%lx]\n", hbin->file_off, (unsigned long)hbin ));
609 if ( hbin_contains_offset( hbin, offset ) )
614 /* start at the beginning */
616 block_off = REGF_BLOCKSIZE;
618 /* cleanup before the next round */
620 prs_mem_free( &hbin->ps );
622 hbin = read_hbin_block( file, block_off );
625 block_off = hbin->file_off + hbin->block_size;
627 } while ( hbin && !hbin_contains_offset( hbin, offset ) );
631 DLIST_ADD( file->block_list, hbin );
636 /*******************************************************************
637 *******************************************************************/
639 static bool prs_hash_rec( const char *desc, prs_struct *ps, int depth, REGF_HASH_REC *hash )
641 prs_debug(ps, depth, desc, "prs_hash_rec");
644 if ( !prs_uint32( "nk_off", ps, depth, &hash->nk_off ))
646 if ( !prs_uint8s( True, "keycheck", ps, depth, hash->keycheck, sizeof( hash->keycheck )) )
652 /*******************************************************************
653 *******************************************************************/
655 static bool hbin_prs_lf_records( const char *desc, REGF_HBIN *hbin, int depth, REGF_NK_REC *nk )
658 REGF_LF_REC *lf = &nk->subkeys;
659 uint32 data_size, start_off, end_off;
661 prs_debug(&hbin->ps, depth, desc, "prs_lf_records");
664 /* check if we have anything to do first */
666 if ( nk->num_subkeys == 0 )
669 /* move to the LF record */
671 if ( !prs_set_offset( &hbin->ps, nk->subkeys_off + HBIN_HDR_SIZE - hbin->first_hbin_off ) )
674 /* backup and get the data_size */
676 if ( !prs_set_offset( &hbin->ps, prs_offset(&hbin->ps)-sizeof(uint32)) )
678 start_off = prs_offset( &hbin->ps );
679 if ( !prs_uint32( "rec_size", &hbin->ps, depth, &lf->rec_size ))
682 if ( !prs_uint8s( True, "header", &hbin->ps, depth, (uint8*)lf->header, sizeof( lf->header )) )
685 if ( !prs_uint16( "num_keys", &hbin->ps, depth, &lf->num_keys))
688 if ( UNMARSHALLING(&hbin->ps) ) {
690 if ( !(lf->hashes = PRS_ALLOC_MEM( &hbin->ps, REGF_HASH_REC, lf->num_keys )) )
697 for ( i=0; i<lf->num_keys; i++ ) {
698 if ( !prs_hash_rec( "hash_rec", &hbin->ps, depth, &lf->hashes[i] ) )
702 end_off = prs_offset( &hbin->ps );
704 /* data_size must be divisible by 8 and large enough to hold the original record */
706 data_size = ((start_off - end_off) & 0xfffffff8 );
707 if ( data_size > lf->rec_size )
708 DEBUG(10,("Encountered reused record (0x%x < 0x%x)\n", data_size, lf->rec_size));
710 if ( MARSHALLING(&hbin->ps) )
716 /*******************************************************************
717 *******************************************************************/
719 static bool hbin_prs_sk_rec( const char *desc, REGF_HBIN *hbin, int depth, REGF_SK_REC *sk )
721 prs_struct *ps = &hbin->ps;
723 uint32 data_size, start_off, end_off;
726 prs_debug(ps, depth, desc, "hbin_prs_sk_rec");
729 if ( !prs_set_offset( &hbin->ps, sk->sk_off + HBIN_HDR_SIZE - hbin->first_hbin_off ) )
732 /* backup and get the data_size */
734 if ( !prs_set_offset( &hbin->ps, prs_offset(&hbin->ps)-sizeof(uint32)) )
736 start_off = prs_offset( &hbin->ps );
737 if ( !prs_uint32( "rec_size", &hbin->ps, depth, &sk->rec_size ))
740 if ( !prs_uint8s( True, "header", ps, depth, (uint8*)sk->header, sizeof( sk->header )) )
742 if ( !prs_uint16( "tag", ps, depth, &tag))
745 if ( !prs_uint32( "prev_sk_off", ps, depth, &sk->prev_sk_off))
747 if ( !prs_uint32( "next_sk_off", ps, depth, &sk->next_sk_off))
749 if ( !prs_uint32( "ref_count", ps, depth, &sk->ref_count))
751 if ( !prs_uint32( "size", ps, depth, &sk->size))
756 TALLOC_CTX *mem_ctx = prs_get_mem_context(&hbin->ps);
759 if (MARSHALLING(&hbin->ps)) {
760 status = marshall_sec_desc(mem_ctx,
762 &blob.data, &blob.length);
763 if (!NT_STATUS_IS_OK(status))
765 if (!prs_copy_data_in(&hbin->ps, (const char *)blob.data, blob.length))
768 blob = data_blob_const(prs_data_p(&hbin->ps),
769 prs_data_size(&hbin->ps));
770 status = unmarshall_sec_desc(mem_ctx,
771 blob.data, blob.length,
773 if (!NT_STATUS_IS_OK(status))
775 prs_set_offset(&hbin->ps, blob.length);
779 end_off = prs_offset( &hbin->ps );
781 /* data_size must be divisible by 8 and large enough to hold the original record */
783 data_size = ((start_off - end_off) & 0xfffffff8 );
784 if ( data_size > sk->rec_size )
785 DEBUG(10,("Encountered reused record (0x%x < 0x%x)\n", data_size, sk->rec_size));
787 if ( MARSHALLING(&hbin->ps) )
793 /*******************************************************************
794 *******************************************************************/
796 static bool hbin_prs_vk_rec( const char *desc, REGF_HBIN *hbin, int depth, REGF_VK_REC *vk, REGF_FILE *file )
800 prs_struct *ps = &hbin->ps;
801 uint32 data_size, start_off, end_off;
803 prs_debug(ps, depth, desc, "prs_vk_rec");
806 /* backup and get the data_size */
808 if ( !prs_set_offset( &hbin->ps, prs_offset(&hbin->ps)-sizeof(uint32)) )
810 start_off = prs_offset( &hbin->ps );
811 if ( !prs_uint32( "rec_size", &hbin->ps, depth, &vk->rec_size ))
814 if ( !prs_uint8s( True, "header", ps, depth, (uint8*)vk->header, sizeof( vk->header )) )
817 if ( MARSHALLING(&hbin->ps) )
818 name_length = strlen(vk->valuename);
820 if ( !prs_uint16( "name_length", ps, depth, &name_length ))
822 if ( !prs_uint32( "data_size", ps, depth, &vk->data_size ))
824 if ( !prs_uint32( "data_off", ps, depth, &vk->data_off ))
826 if ( !prs_uint32( "type", ps, depth, &vk->type))
828 if ( !prs_uint16( "flag", ps, depth, &vk->flag))
831 offset = prs_offset( ps );
832 offset += 2; /* skip 2 bytes */
833 prs_set_offset( ps, offset );
837 if ( vk->flag&VK_FLAG_NAME_PRESENT ) {
839 if ( UNMARSHALLING(&hbin->ps) ) {
840 if ( !(vk->valuename = PRS_ALLOC_MEM( ps, char, name_length+1 )))
843 if ( !prs_uint8s( True, "name", ps, depth, (uint8*)vk->valuename, name_length ) )
847 end_off = prs_offset( &hbin->ps );
849 /* get the data if necessary */
851 if ( vk->data_size != 0 ) {
852 bool charmode = False;
854 if ( (vk->type == REG_SZ) || (vk->type == REG_MULTI_SZ) )
857 /* the data is stored in the offset if the size <= 4 */
859 if ( !(vk->data_size & VK_DATA_IN_OFFSET) ) {
860 REGF_HBIN *hblock = hbin;
861 uint32 data_rec_size;
863 if ( UNMARSHALLING(&hbin->ps) ) {
864 if ( !(vk->data = PRS_ALLOC_MEM( ps, uint8, vk->data_size) ) )
868 /* this data can be in another hbin */
869 if ( !hbin_contains_offset( hbin, vk->data_off ) ) {
870 if ( !(hblock = lookup_hbin_block( file, vk->data_off )) )
873 if ( !(prs_set_offset( &hblock->ps, (vk->data_off+HBIN_HDR_SIZE-hblock->first_hbin_off)-sizeof(uint32) )) )
876 if ( MARSHALLING(&hblock->ps) ) {
877 data_rec_size = ( (vk->data_size+sizeof(uint32)) & 0xfffffff8 ) + 8;
878 data_rec_size = ( data_rec_size - 1 ) ^ 0xFFFFFFFF;
880 if ( !prs_uint32( "data_rec_size", &hblock->ps, depth, &data_rec_size ))
882 if ( !prs_uint8s( charmode, "data", &hblock->ps, depth, vk->data, vk->data_size) )
885 if ( MARSHALLING(&hblock->ps) )
886 hblock->dirty = True;
889 if ( !(vk->data = PRS_ALLOC_MEM( ps, uint8, 4 ) ) )
891 SIVAL( vk->data, 0, vk->data_off );
896 /* data_size must be divisible by 8 and large enough to hold the original record */
898 data_size = ((start_off - end_off ) & 0xfffffff8 );
899 if ( data_size != vk->rec_size )
900 DEBUG(10,("prs_vk_rec: data_size check failed (0x%x < 0x%x)\n", data_size, vk->rec_size));
902 if ( MARSHALLING(&hbin->ps) )
908 /*******************************************************************
909 read a VK record which is contained in the HBIN block stored
910 in the prs_struct *ps.
911 *******************************************************************/
913 static bool hbin_prs_vk_records( const char *desc, REGF_HBIN *hbin, int depth, REGF_NK_REC *nk, REGF_FILE *file )
918 prs_debug(&hbin->ps, depth, desc, "prs_vk_records");
921 /* check if we have anything to do first */
923 if ( nk->num_values == 0 )
926 if ( UNMARSHALLING(&hbin->ps) ) {
927 if ( !(nk->values = PRS_ALLOC_MEM( &hbin->ps, REGF_VK_REC, nk->num_values ) ) )
931 /* convert the offset to something relative to this HBIN block */
933 if ( !prs_set_offset( &hbin->ps, nk->values_off+HBIN_HDR_SIZE-hbin->first_hbin_off-sizeof(uint32)) )
936 if ( MARSHALLING( &hbin->ps) ) {
937 record_size = ( ( nk->num_values * sizeof(uint32) ) & 0xfffffff8 ) + 8;
938 record_size = (record_size - 1) ^ 0xFFFFFFFF;
941 if ( !prs_uint32( "record_size", &hbin->ps, depth, &record_size ) )
944 for ( i=0; i<nk->num_values; i++ ) {
945 if ( !prs_uint32( "vk_off", &hbin->ps, depth, &nk->values[i].rec_off ) )
949 for ( i=0; i<nk->num_values; i++ ) {
950 REGF_HBIN *sub_hbin = hbin;
953 if ( !hbin_contains_offset( hbin, nk->values[i].rec_off ) ) {
954 sub_hbin = lookup_hbin_block( file, nk->values[i].rec_off );
956 DEBUG(0,("hbin_prs_vk_records: Failed to find HBIN block containing offset [0x%x]\n",
957 nk->values[i].hbin_off));
962 new_offset = nk->values[i].rec_off + HBIN_HDR_SIZE - sub_hbin->first_hbin_off;
963 if ( !prs_set_offset( &sub_hbin->ps, new_offset ) )
965 if ( !hbin_prs_vk_rec( "vk_rec", sub_hbin, depth, &nk->values[i], file ) )
969 if ( MARSHALLING(&hbin->ps) )
977 /*******************************************************************
978 *******************************************************************/
980 static REGF_SK_REC* find_sk_record_by_offset( REGF_FILE *file, uint32 offset )
984 for ( p_sk=file->sec_desc_list; p_sk; p_sk=p_sk->next ) {
985 if ( p_sk->sk_off == offset )
992 /*******************************************************************
993 *******************************************************************/
995 static REGF_SK_REC* find_sk_record_by_sec_desc( REGF_FILE *file, struct security_descriptor *sd )
999 for ( p=file->sec_desc_list; p; p=p->next ) {
1000 if ( security_descriptor_equal( p->sec_desc, sd ) )
1009 /*******************************************************************
1010 *******************************************************************/
1012 static bool hbin_prs_key( REGF_FILE *file, REGF_HBIN *hbin, REGF_NK_REC *nk )
1015 REGF_HBIN *sub_hbin;
1017 prs_debug(&hbin->ps, depth, "", "fetch_key");
1020 /* get the initial nk record */
1022 if ( !prs_nk_rec( "nk_rec", &hbin->ps, depth, nk ))
1025 /* fill in values */
1027 if ( nk->num_values && (nk->values_off!=REGF_OFFSET_NONE) ) {
1029 if ( !hbin_contains_offset( hbin, nk->values_off ) ) {
1030 sub_hbin = lookup_hbin_block( file, nk->values_off );
1032 DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing value_list_offset [0x%x]\n",
1038 if ( !hbin_prs_vk_records( "vk_rec", sub_hbin, depth, nk, file ))
1042 /* now get subkeys */
1044 if ( nk->num_subkeys && (nk->subkeys_off!=REGF_OFFSET_NONE) ) {
1046 if ( !hbin_contains_offset( hbin, nk->subkeys_off ) ) {
1047 sub_hbin = lookup_hbin_block( file, nk->subkeys_off );
1049 DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing subkey_offset [0x%x]\n",
1055 if ( !hbin_prs_lf_records( "lf_rec", sub_hbin, depth, nk ))
1059 /* get the to the security descriptor. First look if we have already parsed it */
1061 if ( (nk->sk_off!=REGF_OFFSET_NONE) && !( nk->sec_desc = find_sk_record_by_offset( file, nk->sk_off )) ) {
1064 if ( !hbin_contains_offset( hbin, nk->sk_off ) ) {
1065 sub_hbin = lookup_hbin_block( file, nk->sk_off );
1067 DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing sk_offset [0x%x]\n",
1073 if ( !(nk->sec_desc = TALLOC_ZERO_P( file->mem_ctx, REGF_SK_REC )) )
1075 nk->sec_desc->sk_off = nk->sk_off;
1076 if ( !hbin_prs_sk_rec( "sk_rec", sub_hbin, depth, nk->sec_desc ))
1079 /* add to the list of security descriptors (ref_count has been read from the files) */
1081 nk->sec_desc->sk_off = nk->sk_off;
1082 DLIST_ADD( file->sec_desc_list, nk->sec_desc );
1088 /*******************************************************************
1089 *******************************************************************/
1091 static bool next_record( REGF_HBIN *hbin, const char *hdr, bool *eob )
1093 uint8 header[REC_HDR_SIZE];
1095 uint32 curr_off, block_size;
1097 prs_struct *ps = &hbin->ps;
1099 curr_off = prs_offset( ps );
1100 if ( curr_off == 0 )
1101 prs_set_offset( ps, HBIN_HEADER_REC_SIZE );
1103 /* assume that the current offset is at the record header
1104 and we need to backup to read the record size */
1106 curr_off -= sizeof(uint32);
1108 block_size = prs_data_size( ps );
1110 memset( header, 0x0, sizeof(uint8)*REC_HDR_SIZE );
1113 curr_off = curr_off+record_size;
1114 if ( curr_off >= block_size )
1117 if ( !prs_set_offset( &hbin->ps, curr_off) )
1120 if ( !prs_uint32( "record_size", ps, 0, &record_size ) )
1122 if ( !prs_uint8s( True, "header", ps, 0, header, REC_HDR_SIZE ) )
1125 if ( record_size & 0x80000000 ) {
1126 /* absolute_value(record_size) */
1127 record_size = (record_size ^ 0xffffffff) + 1;
1130 if ( memcmp( header, hdr, REC_HDR_SIZE ) == 0 ) {
1132 curr_off += sizeof(uint32);
1136 /* mark prs_struct as done ( at end ) if no more SK records */
1137 /* mark end-of-block as True */
1140 prs_set_offset( &hbin->ps, prs_data_size(&hbin->ps) );
1145 if ( !prs_set_offset( ps, curr_off ) )
1151 /*******************************************************************
1152 *******************************************************************/
1154 static bool next_nk_record( REGF_FILE *file, REGF_HBIN *hbin, REGF_NK_REC *nk, bool *eob )
1156 if ( next_record( hbin, "nk", eob ) && hbin_prs_key( file, hbin, nk ) )
1162 /*******************************************************************
1163 Intialize the newly created REGF_BLOCK in *file and write the
1164 block header to disk
1165 *******************************************************************/
1167 static bool init_regf_block( REGF_FILE *file )
1172 if ( !prs_init( &ps, REGF_BLOCKSIZE, file->mem_ctx, MARSHALL ) )
1175 memcpy( file->header, "regf", REGF_HDR_SIZE );
1176 file->data_offset = 0x20;
1177 file->last_block = 0x1000;
1181 unix_to_nt_time( &file->mtime, time(NULL) );
1183 /* hard coded values...no diea what these are ... maybe in time */
1185 file->unknown1 = 0x2;
1186 file->unknown2 = 0x1;
1187 file->unknown3 = 0x3;
1188 file->unknown4 = 0x0;
1189 file->unknown5 = 0x1;
1190 file->unknown6 = 0x1;
1192 /* write header to the buffer */
1194 if ( !prs_regf_block( "regf_header", &ps, 0, file ) ) {
1199 /* calculate the checksum, re-marshall data (to include the checksum)
1200 and write to disk */
1202 file->checksum = regf_block_checksum( &ps );
1203 prs_set_offset( &ps, 0 );
1204 if ( !prs_regf_block( "regf_header", &ps, 0, file ) ) {
1209 if ( write_block( file, &ps, 0 ) == -1 ) {
1210 DEBUG(0,("init_regf_block: Failed to initialize registry header block!\n"));
1216 prs_mem_free( &ps );
1220 /*******************************************************************
1221 Open the registry file and then read in the REGF block to get the
1223 *******************************************************************/
1225 REGF_FILE* regfio_open( const char *filename, int flags, int mode )
1229 if ( !(rb = SMB_MALLOC_P(REGF_FILE)) ) {
1230 DEBUG(0,("ERROR allocating memory\n"));
1236 if ( !(rb->mem_ctx = talloc_init( "read_regf_block" )) ) {
1241 rb->open_flags = flags;
1243 /* open and existing file */
1245 if ( (rb->fd = open(filename, flags, mode)) == -1 ) {
1246 DEBUG(0,("regfio_open: failure to open %s (%s)\n", filename, strerror(errno)));
1251 /* check if we are creating a new file or overwriting an existing one */
1253 if ( flags & (O_CREAT|O_TRUNC) ) {
1254 if ( !init_regf_block( rb ) ) {
1255 DEBUG(0,("regfio_open: Failed to read initial REGF block\n"));
1264 /* read in an existing file */
1266 if ( !read_regf_block( rb ) ) {
1267 DEBUG(0,("regfio_open: Failed to read initial REGF block\n"));
1277 /*******************************************************************
1278 *******************************************************************/
1280 static void regfio_mem_free( REGF_FILE *file )
1282 /* free any talloc()'d memory */
1284 if ( file && file->mem_ctx )
1285 talloc_destroy( file->mem_ctx );
1288 /*******************************************************************
1289 *******************************************************************/
1291 int regfio_close( REGF_FILE *file )
1295 /* cleanup for a file opened for write */
1297 if ((file->fd != -1) && (file->open_flags & (O_WRONLY|O_RDWR))) {
1301 /* write of sd list */
1303 for ( sk=file->sec_desc_list; sk; sk=sk->next ) {
1304 hbin_prs_sk_rec( "sk_rec", sk->hbin, 0, sk );
1307 /* flush any dirty blocks */
1309 while ( file->block_list ) {
1310 hbin_block_close( file, file->block_list );
1315 unix_to_nt_time( &file->mtime, time(NULL) );
1317 if ( read_block( file, &ps, 0, REGF_BLOCKSIZE ) != -1 ) {
1318 /* now use for writing */
1319 prs_switch_type( &ps, MARSHALL );
1321 /* stream the block once, generate the checksum,
1322 and stream it again */
1323 prs_set_offset( &ps, 0 );
1324 prs_regf_block( "regf_blocK", &ps, 0, file );
1325 file->checksum = regf_block_checksum( &ps );
1326 prs_set_offset( &ps, 0 );
1327 prs_regf_block( "regf_blocK", &ps, 0, file );
1329 /* now we are ready to write it to disk */
1330 if ( write_block( file, &ps, 0 ) == -1 )
1331 DEBUG(0,("regfio_close: failed to update the regf header block!\n"));
1334 prs_mem_free( &ps );
1337 regfio_mem_free( file );
1339 /* nothing tdo do if there is no open file */
1351 /*******************************************************************
1352 *******************************************************************/
1354 static void regfio_flush( REGF_FILE *file )
1358 for ( hbin=file->block_list; hbin; hbin=hbin->next ) {
1359 write_hbin_block( file, hbin );
1363 /*******************************************************************
1364 There should be only *one* root key in the registry file based
1365 on my experience. --jerry
1366 *******************************************************************/
1368 REGF_NK_REC* regfio_rootkey( REGF_FILE *file )
1372 uint32 offset = REGF_BLOCKSIZE;
1379 if ( !(nk = TALLOC_ZERO_P( file->mem_ctx, REGF_NK_REC )) ) {
1380 DEBUG(0,("regfio_rootkey: talloc() failed!\n"));
1384 /* scan through the file on HBIN block at a time looking
1385 for an NK record with a type == 0x002c.
1386 Normally this is the first nk record in the first hbin
1387 block (but I'm not assuming that for now) */
1389 while ( (hbin = read_hbin_block( file, offset )) ) {
1393 if ( next_nk_record( file, hbin, nk, &eob ) ) {
1394 if ( nk->key_type == NK_TYPE_ROOTKEY ) {
1399 prs_mem_free( &hbin->ps );
1405 offset += hbin->block_size;
1409 DEBUG(0,("regfio_rootkey: corrupt registry file ? No root key record located\n"));
1413 DLIST_ADD( file->block_list, hbin );
1418 /*******************************************************************
1419 This acts as an interator over the subkeys defined for a given
1420 NK record. Remember that offsets are from the *first* HBIN block.
1421 *******************************************************************/
1423 REGF_NK_REC* regfio_fetch_subkey( REGF_FILE *file, REGF_NK_REC *nk )
1425 REGF_NK_REC *subkey;
1429 /* see if there is anything left to report */
1431 if ( !nk || (nk->subkeys_off==REGF_OFFSET_NONE) || (nk->subkey_index >= nk->num_subkeys) )
1434 /* find the HBIN block which should contain the nk record */
1436 if ( !(hbin = lookup_hbin_block( file, nk->subkeys.hashes[nk->subkey_index].nk_off )) ) {
1437 DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing offset [0x%x]\n",
1438 nk->subkeys.hashes[nk->subkey_index].nk_off));
1442 nk_offset = nk->subkeys.hashes[nk->subkey_index].nk_off;
1443 if ( !prs_set_offset( &hbin->ps, (HBIN_HDR_SIZE + nk_offset - hbin->first_hbin_off) ) )
1447 if ( !(subkey = TALLOC_ZERO_P( file->mem_ctx, REGF_NK_REC )) )
1450 if ( !hbin_prs_key( file, hbin, subkey ) )
1457 /*******************************************************************
1458 *******************************************************************/
1460 static REGF_HBIN* regf_hbin_allocate( REGF_FILE *file, uint32 block_size )
1463 SMB_STRUCT_STAT sbuf;
1465 if ( !(hbin = TALLOC_ZERO_P( file->mem_ctx, REGF_HBIN )) )
1468 memcpy( hbin->header, "hbin", sizeof(HBIN_HDR_SIZE) );
1471 if (sys_fstat(file->fd, &sbuf, false)) {
1472 DEBUG(0,("regf_hbin_allocate: stat() failed! (%s)\n", strerror(errno)));
1476 hbin->file_off = sbuf.st_ex_size;
1478 hbin->free_off = HBIN_HEADER_REC_SIZE;
1479 hbin->free_size = block_size - hbin->free_off + sizeof(uint32);
1481 hbin->block_size = block_size;
1482 hbin->first_hbin_off = hbin->file_off - REGF_BLOCKSIZE;
1484 if ( !prs_init( &hbin->ps, block_size, file->mem_ctx, MARSHALL ) )
1487 if ( !prs_hbin_block( "new_hbin", &hbin->ps, 0, hbin ) )
1490 if ( !write_hbin_block( file, hbin ) )
1493 file->last_block = hbin->file_off;
1498 /*******************************************************************
1499 *******************************************************************/
1501 static void update_free_space( REGF_HBIN *hbin, uint32 size_used )
1503 hbin->free_off += size_used;
1504 hbin->free_size -= size_used;
1506 if ( hbin->free_off >= hbin->block_size ) {
1507 hbin->free_off = REGF_OFFSET_NONE;
1513 /*******************************************************************
1514 *******************************************************************/
1516 static REGF_HBIN* find_free_space( REGF_FILE *file, uint32 size )
1518 REGF_HBIN *hbin, *p_hbin;
1522 /* check open block list */
1524 for ( hbin=file->block_list; hbin!=NULL; hbin=hbin->next ) {
1525 /* only check blocks that actually have available space */
1527 if ( hbin->free_off == REGF_OFFSET_NONE )
1530 /* check for a large enough available chunk */
1532 if ( (hbin->block_size - hbin->free_off) >= size ) {
1533 DLIST_PROMOTE( file->block_list, hbin );
1538 /* parse the file until we find a block with
1539 enough free space; save the last non-filled hbin */
1541 block_off = REGF_BLOCKSIZE;
1543 /* cleanup before the next round */
1546 prs_mem_free( &hbin->ps );
1548 hbin = read_hbin_block( file, block_off );
1552 /* make sure that we don't already have this block in memory */
1554 for ( p_hbin=file->block_list; p_hbin!=NULL; p_hbin=p_hbin->next ) {
1555 if ( p_hbin->file_off == hbin->file_off ) {
1561 block_off = hbin->file_off + hbin->block_size;
1564 prs_mem_free( &hbin->ps );
1569 /* if (cached block or (new block and not enough free space)) then continue looping */
1570 } while ( cached || (hbin && (hbin->free_size < size)) );
1572 /* no free space; allocate a new one */
1577 /* allocate in multiples of REGF_ALLOC_BLOCK; make sure (size + hbin_header) fits */
1579 alloc_size = (((size+HBIN_HEADER_REC_SIZE) / REGF_ALLOC_BLOCK ) + 1 ) * REGF_ALLOC_BLOCK;
1581 if ( !(hbin = regf_hbin_allocate( file, alloc_size )) ) {
1582 DEBUG(0,("find_free_space: regf_hbin_allocate() failed!\n"));
1585 DLIST_ADD( file->block_list, hbin );
1589 /* set the offset to be ready to write */
1591 if ( !prs_set_offset( &hbin->ps, hbin->free_off-sizeof(uint32) ) )
1594 /* write the record size as a placeholder for now, it should be
1595 probably updated by the caller once it all of the data necessary
1598 if ( !prs_uint32("allocated_size", &hbin->ps, 0, &size) )
1601 update_free_space( hbin, size );
1606 /*******************************************************************
1607 *******************************************************************/
1609 static uint32 sk_record_data_size( struct security_descriptor * sd )
1611 uint32 size, size_mod8;
1615 /* the record size is sizeof(hdr) + name + static members + data_size_field */
1617 size = sizeof(uint32)*5 + ndr_size_security_descriptor(sd, 0) + sizeof(uint32);
1620 size_mod8 = size & 0xfffffff8;
1621 if ( size_mod8 < size )
1627 /*******************************************************************
1628 *******************************************************************/
1630 static uint32 vk_record_data_size( REGF_VK_REC *vk )
1632 uint32 size, size_mod8;
1636 /* the record size is sizeof(hdr) + name + static members + data_size_field */
1638 size = REC_HDR_SIZE + (sizeof(uint16)*3) + (sizeof(uint32)*3) + sizeof(uint32);
1640 if ( vk->valuename )
1641 size += strlen(vk->valuename);
1644 size_mod8 = size & 0xfffffff8;
1645 if ( size_mod8 < size )
1651 /*******************************************************************
1652 *******************************************************************/
1654 static uint32 lf_record_data_size( uint32 num_keys )
1656 uint32 size, size_mod8;
1660 /* the record size is sizeof(hdr) + num_keys + sizeof of hash_array + data_size_uint32 */
1662 size = REC_HDR_SIZE + sizeof(uint16) + (sizeof(REGF_HASH_REC) * num_keys) + sizeof(uint32);
1665 size_mod8 = size & 0xfffffff8;
1666 if ( size_mod8 < size )
1672 /*******************************************************************
1673 *******************************************************************/
1675 static uint32 nk_record_data_size( REGF_NK_REC *nk )
1677 uint32 size, size_mod8;
1681 /* the record size is static + length_of_keyname + length_of_classname + data_size_uint32 */
1683 size = 0x4c + strlen(nk->keyname) + sizeof(uint32);
1685 if ( nk->classname )
1686 size += strlen( nk->classname );
1689 size_mod8 = size & 0xfffffff8;
1690 if ( size_mod8 < size )
1696 /*******************************************************************
1697 *******************************************************************/
1699 static bool create_vk_record(REGF_FILE *file, REGF_VK_REC *vk,
1700 struct regval_blob *value)
1702 char *name = regval_name(value);
1703 REGF_HBIN *data_hbin;
1707 memcpy( vk->header, "vk", REC_HDR_SIZE );
1710 vk->valuename = talloc_strdup( file->mem_ctx, regval_name(value) );
1711 vk->flag = VK_FLAG_NAME_PRESENT;
1714 vk->data_size = regval_size( value );
1715 vk->type = regval_type( value );
1717 if ( vk->data_size > sizeof(uint32) ) {
1718 uint32 data_size = ( (vk->data_size+sizeof(uint32)) & 0xfffffff8 ) + 8;
1720 vk->data = (uint8 *)TALLOC_MEMDUP( file->mem_ctx,
1721 regval_data_p(value),
1723 if (vk->data == NULL) {
1727 /* go ahead and store the offset....we'll pick this hbin block back up when
1728 we stream the data */
1730 if ((data_hbin = find_free_space(file, data_size )) == NULL) {
1733 vk->data_off = prs_offset( &data_hbin->ps ) + data_hbin->first_hbin_off - HBIN_HDR_SIZE;
1736 /* make sure we don't try to copy from a NULL value pointer */
1738 if ( vk->data_size != 0 )
1739 memcpy( &vk->data_off, regval_data_p(value), sizeof(uint32) );
1740 vk->data_size |= VK_DATA_IN_OFFSET;
1746 /*******************************************************************
1747 *******************************************************************/
1749 static int hashrec_cmp( REGF_HASH_REC *h1, REGF_HASH_REC *h2 )
1751 return StrCaseCmp( h1->fullname, h2->fullname );
1754 /*******************************************************************
1755 *******************************************************************/
1757 REGF_NK_REC* regfio_write_key( REGF_FILE *file, const char *name,
1758 struct regval_ctr *values, struct regsubkey_ctr *subkeys,
1759 struct security_descriptor *sec_desc, REGF_NK_REC *parent )
1762 REGF_HBIN *vlist_hbin = NULL;
1765 if ( !(nk = TALLOC_ZERO_P( file->mem_ctx, REGF_NK_REC )) )
1768 memcpy( nk->header, "nk", REC_HDR_SIZE );
1771 nk->key_type = NK_TYPE_ROOTKEY;
1773 nk->key_type = NK_TYPE_NORMALKEY;
1775 /* store the parent offset (or -1 if a the root key */
1777 nk->parent_off = parent ? (parent->hbin_off + parent->hbin->file_off - REGF_BLOCKSIZE - HBIN_HDR_SIZE ) : REGF_OFFSET_NONE;
1779 /* no classname currently */
1781 nk->classname_off = REGF_OFFSET_NONE;
1782 nk->classname = NULL;
1783 nk->keyname = talloc_strdup( file->mem_ctx, name );
1785 /* current modification time */
1787 unix_to_nt_time( &nk->mtime, time(NULL) );
1789 /* allocate the record on disk */
1791 size = nk_record_data_size( nk );
1792 nk->rec_size = ( size - 1 ) ^ 0XFFFFFFFF;
1793 if ((nk->hbin = find_free_space( file, size )) == NULL) {
1796 nk->hbin_off = prs_offset( &nk->hbin->ps );
1798 /* Update the hash record in the parent */
1801 REGF_HASH_REC *hash = &parent->subkeys.hashes[parent->subkey_index];
1803 hash->nk_off = prs_offset( &nk->hbin->ps ) + nk->hbin->first_hbin_off - HBIN_HDR_SIZE;
1804 memcpy( hash->keycheck, name, sizeof(uint32) );
1805 hash->fullname = talloc_strdup( file->mem_ctx, name );
1806 parent->subkey_index++;
1808 /* sort the list by keyname */
1809 TYPESAFE_QSORT(parent->subkeys.hashes, parent->subkey_index, hashrec_cmp);
1811 if ( !hbin_prs_lf_records( "lf_rec", parent->subkeys.hbin, 0, parent ) )
1815 /* write the security descriptor */
1817 nk->sk_off = REGF_OFFSET_NONE;
1819 uint32 sk_size = sk_record_data_size( sec_desc );
1822 /* search for it in the existing list of sd's */
1824 if ( (nk->sec_desc = find_sk_record_by_sec_desc( file, sec_desc )) == NULL ) {
1825 /* not found so add it to the list */
1827 if (!(sk_hbin = find_free_space( file, sk_size ))) {
1831 if ( !(nk->sec_desc = TALLOC_ZERO_P( file->mem_ctx, REGF_SK_REC )) )
1834 /* now we have to store the security descriptor in the list and
1835 update the offsets */
1837 memcpy( nk->sec_desc->header, "sk", REC_HDR_SIZE );
1838 nk->sec_desc->hbin = sk_hbin;
1839 nk->sec_desc->hbin_off = prs_offset( &sk_hbin->ps );
1840 nk->sec_desc->sk_off = prs_offset( &sk_hbin->ps ) + sk_hbin->first_hbin_off - HBIN_HDR_SIZE;
1841 nk->sec_desc->rec_size = (sk_size-1) ^ 0xFFFFFFFF;
1843 nk->sec_desc->sec_desc = sec_desc;
1844 nk->sec_desc->ref_count = 0;
1846 /* size value must be self-inclusive */
1847 nk->sec_desc->size = ndr_size_security_descriptor(sec_desc, 0)
1850 DLIST_ADD_END( file->sec_desc_list, nk->sec_desc, REGF_SK_REC *);
1852 /* update the offsets for us and the previous sd in the list.
1853 if this is the first record, then just set the next and prev
1854 offsets to ourself. */
1856 if ( DLIST_PREV(nk->sec_desc) ) {
1857 REGF_SK_REC *prev = DLIST_PREV(nk->sec_desc);
1859 nk->sec_desc->prev_sk_off = prev->hbin_off + prev->hbin->first_hbin_off - HBIN_HDR_SIZE;
1860 prev->next_sk_off = nk->sec_desc->sk_off;
1862 /* the end must loop around to the front */
1863 nk->sec_desc->next_sk_off = file->sec_desc_list->sk_off;
1865 /* and first must loop around to the tail */
1866 file->sec_desc_list->prev_sk_off = nk->sec_desc->sk_off;
1868 nk->sec_desc->prev_sk_off = nk->sec_desc->sk_off;
1869 nk->sec_desc->next_sk_off = nk->sec_desc->sk_off;
1873 /* bump the reference count +1 */
1875 nk->sk_off = nk->sec_desc->sk_off;
1876 nk->sec_desc->ref_count++;
1879 /* write the subkeys */
1881 nk->subkeys_off = REGF_OFFSET_NONE;
1882 if ( (nk->num_subkeys = regsubkey_ctr_numkeys( subkeys )) != 0 ) {
1883 uint32 lf_size = lf_record_data_size( nk->num_subkeys );
1887 if (!(nk->subkeys.hbin = find_free_space( file, lf_size ))) {
1890 nk->subkeys.hbin_off = prs_offset( &nk->subkeys.hbin->ps );
1891 nk->subkeys.rec_size = (lf_size-1) ^ 0xFFFFFFFF;
1892 nk->subkeys_off = prs_offset( &nk->subkeys.hbin->ps ) + nk->subkeys.hbin->first_hbin_off - HBIN_HDR_SIZE;
1894 memcpy( nk->subkeys.header, "lf", REC_HDR_SIZE );
1896 nk->subkeys.num_keys = nk->num_subkeys;
1897 if (nk->subkeys.num_keys) {
1898 if ( !(nk->subkeys.hashes = TALLOC_ZERO_ARRAY( file->mem_ctx, REGF_HASH_REC, nk->subkeys.num_keys )) )
1901 nk->subkeys.hashes = NULL;
1903 nk->subkey_index = 0;
1905 /* update the max_bytes_subkey{name,classname} fields */
1906 for ( i=0; i<nk->num_subkeys; i++ ) {
1907 namelen = strlen( regsubkey_ctr_specific_key(subkeys, i) );
1908 if ( namelen*2 > nk->max_bytes_subkeyname )
1909 nk->max_bytes_subkeyname = namelen * 2;
1913 /* write the values */
1915 nk->values_off = REGF_OFFSET_NONE;
1916 if ( (nk->num_values = regval_ctr_numvals( values )) != 0 ) {
1917 uint32 vlist_size = ( ( nk->num_values * sizeof(uint32) ) & 0xfffffff8 ) + 8;
1920 if (!(vlist_hbin = find_free_space( file, vlist_size ))) {
1923 nk->values_off = prs_offset( &vlist_hbin->ps ) + vlist_hbin->first_hbin_off - HBIN_HDR_SIZE;
1925 if (nk->num_values) {
1926 if ( !(nk->values = TALLOC_ARRAY( file->mem_ctx, REGF_VK_REC, nk->num_values )) )
1932 /* create the vk records */
1934 for ( i=0; i<nk->num_values; i++ ) {
1935 uint32 vk_size, namelen, datalen;
1936 struct regval_blob *r;
1938 r = regval_ctr_specific_value( values, i );
1939 create_vk_record( file, &nk->values[i], r );
1940 vk_size = vk_record_data_size( &nk->values[i] );
1941 nk->values[i].hbin = find_free_space( file, vk_size );
1942 nk->values[i].hbin_off = prs_offset( &nk->values[i].hbin->ps );
1943 nk->values[i].rec_size = ( vk_size - 1 ) ^ 0xFFFFFFFF;
1944 nk->values[i].rec_off = prs_offset( &nk->values[i].hbin->ps )
1945 + nk->values[i].hbin->first_hbin_off
1948 /* update the max bytes fields if necessary */
1950 namelen = strlen( regval_name(r) );
1951 if ( namelen*2 > nk->max_bytes_valuename )
1952 nk->max_bytes_valuename = namelen * 2;
1954 datalen = regval_size( r );
1955 if ( datalen > nk->max_bytes_value )
1956 nk->max_bytes_value = datalen;
1960 /* stream the records */
1962 prs_set_offset( &nk->hbin->ps, nk->hbin_off );
1963 if ( !prs_nk_rec( "nk_rec", &nk->hbin->ps, 0, nk ) )
1966 if ( nk->num_values ) {
1967 if ( !hbin_prs_vk_records( "vk_records", vlist_hbin, 0, nk, file ) )
1972 regfio_flush( file );