/* * Unix SMB/CIFS implementation. * Windows NT registry I/O library * Copyright (c) Gerald (Jerry) Carter 2005 * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see <http://www.gnu.org/licenses/>. */ #include "includes.h" #include "regfio.h" #undef DBGC_CLASS #define DBGC_CLASS DBGC_REGISTRY /******************************************************************* * * TODO : Right now this code basically ignores classnames. * ******************************************************************/ /******************************************************************* *******************************************************************/ static int write_block( REGF_FILE *file, prs_struct *ps, uint32 offset ) { int bytes_written, returned; char *buffer = prs_data_p( ps ); uint32 buffer_size = prs_data_size( ps ); SMB_STRUCT_STAT sbuf; if ( file->fd == -1 ) return -1; /* check for end of file */ if ( sys_fstat( file->fd, &sbuf ) ) { DEBUG(0,("write_block: stat() failed! (%s)\n", strerror(errno))); return -1; } if ( lseek( file->fd, offset, SEEK_SET ) == -1 ) { DEBUG(0,("write_block: lseek() failed! (%s)\n", strerror(errno) )); return -1; } bytes_written = returned = 0; while ( bytes_written < buffer_size ) { if ( (returned = write( file->fd, buffer+bytes_written, buffer_size-bytes_written )) == -1 ) { DEBUG(0,("write_block: write() failed! (%s)\n", strerror(errno) )); return False; } bytes_written += returned; } return bytes_written; } /******************************************************************* *******************************************************************/ static int read_block( REGF_FILE *file, prs_struct *ps, uint32 file_offset, uint32 block_size ) { int bytes_read, returned; char *buffer; SMB_STRUCT_STAT sbuf; /* check for end of file */ if ( sys_fstat( file->fd, &sbuf ) ) { DEBUG(0,("read_block: stat() failed! (%s)\n", strerror(errno))); return -1; } if ( (size_t)file_offset >= sbuf.st_size ) return -1; /* if block_size == 0, we are parsing HBIN records and need to read some of the header to get the block_size from there */ if ( block_size == 0 ) { char hdr[0x20]; if ( lseek( file->fd, file_offset, SEEK_SET ) == -1 ) { DEBUG(0,("read_block: lseek() failed! (%s)\n", strerror(errno) )); return -1; } returned = read( file->fd, hdr, 0x20 ); if ( (returned == -1) || (returned < 0x20) ) { DEBUG(0,("read_block: failed to read in HBIN header. Is the file corrupt?\n")); return -1; } /* make sure this is an hbin header */ if ( strncmp( hdr, "hbin", HBIN_HDR_SIZE ) != 0 ) { DEBUG(0,("read_block: invalid block header!\n")); return -1; } block_size = IVAL( hdr, 0x08 ); } DEBUG(10,("read_block: block_size == 0x%x\n", block_size )); /* set the offset, initialize the buffer, and read the block from disk */ if ( lseek( file->fd, file_offset, SEEK_SET ) == -1 ) { DEBUG(0,("read_block: lseek() failed! (%s)\n", strerror(errno) )); return -1; } prs_init( ps, block_size, file->mem_ctx, UNMARSHALL ); buffer = prs_data_p( ps ); bytes_read = returned = 0; while ( bytes_read < block_size ) { if ( (returned = read( file->fd, buffer+bytes_read, block_size-bytes_read )) == -1 ) { DEBUG(0,("read_block: read() failed (%s)\n", strerror(errno) )); return False; } if ( (returned == 0) && (bytes_read < block_size) ) { DEBUG(0,("read_block: not a vald registry file ?\n" )); return False; } bytes_read += returned; } return bytes_read; } /******************************************************************* *******************************************************************/ static bool write_hbin_block( REGF_FILE *file, REGF_HBIN *hbin ) { if ( !hbin->dirty ) return True; /* write free space record if any is available */ if ( hbin->free_off != REGF_OFFSET_NONE ) { uint32 header = 0xffffffff; if ( !prs_set_offset( &hbin->ps, hbin->free_off-sizeof(uint32) ) ) return False; if ( !prs_uint32( "free_size", &hbin->ps, 0, &hbin->free_size ) ) return False; if ( !prs_uint32( "free_header", &hbin->ps, 0, &header ) ) return False; } hbin->dirty = (write_block( file, &hbin->ps, hbin->file_off ) != -1); return hbin->dirty; } /******************************************************************* *******************************************************************/ static bool hbin_block_close( REGF_FILE *file, REGF_HBIN *hbin ) { REGF_HBIN *p; /* remove the block from the open list and flush it to disk */ for ( p=file->block_list; p && p!=hbin; p=p->next ) ;; if ( p == hbin ) { DLIST_REMOVE( file->block_list, hbin ); } else DEBUG(0,("hbin_block_close: block not in open list!\n")); if ( !write_hbin_block( file, hbin ) ) return False; return True; } /******************************************************************* *******************************************************************/ static bool prs_regf_block( const char *desc, prs_struct *ps, int depth, REGF_FILE *file ) { prs_debug(ps, depth, desc, "prs_regf_block"); depth++; if ( !prs_uint8s( True, "header", ps, depth, (uint8*)file->header, sizeof( file->header )) ) return False; /* yes, these values are always identical so store them only once */ if ( !prs_uint32( "unknown1", ps, depth, &file->unknown1 )) return False; if ( !prs_uint32( "unknown1 (again)", ps, depth, &file->unknown1 )) return False; /* get the modtime */ if ( !prs_set_offset( ps, 0x0c ) ) return False; if ( !smb_io_time( "modtime", &file->mtime, ps, depth ) ) return False; /* constants */ if ( !prs_uint32( "unknown2", ps, depth, &file->unknown2 )) return False; if ( !prs_uint32( "unknown3", ps, depth, &file->unknown3 )) return False; if ( !prs_uint32( "unknown4", ps, depth, &file->unknown4 )) return False; if ( !prs_uint32( "unknown5", ps, depth, &file->unknown5 )) return False; /* get file offsets */ if ( !prs_set_offset( ps, 0x24 ) ) return False; if ( !prs_uint32( "data_offset", ps, depth, &file->data_offset )) return False; if ( !prs_uint32( "last_block", ps, depth, &file->last_block )) return False; /* one more constant */ if ( !prs_uint32( "unknown6", ps, depth, &file->unknown6 )) return False; /* get the checksum */ if ( !prs_set_offset( ps, 0x01fc ) ) return False; if ( !prs_uint32( "checksum", ps, depth, &file->checksum )) return False; return True; } /******************************************************************* *******************************************************************/ static bool prs_hbin_block( const char *desc, prs_struct *ps, int depth, REGF_HBIN *hbin ) { uint32 block_size2; prs_debug(ps, depth, desc, "prs_regf_block"); depth++; if ( !prs_uint8s( True, "header", ps, depth, (uint8*)hbin->header, sizeof( hbin->header )) ) return False; if ( !prs_uint32( "first_hbin_off", ps, depth, &hbin->first_hbin_off )) return False; /* The dosreg.cpp comments say that the block size is at 0x1c. According to a WINXP NTUSER.dat file, this is wrong. The block_size is at 0x08 */ if ( !prs_uint32( "block_size", ps, depth, &hbin->block_size )) return False; block_size2 = hbin->block_size; prs_set_offset( ps, 0x1c ); if ( !prs_uint32( "block_size2", ps, depth, &block_size2 )) return False; if ( MARSHALLING(ps) ) hbin->dirty = True; return True; } /******************************************************************* *******************************************************************/ static bool prs_nk_rec( const char *desc, prs_struct *ps, int depth, REGF_NK_REC *nk ) { uint16 class_length, name_length; uint32 start; uint32 data_size, start_off, end_off; uint32 unknown_off = REGF_OFFSET_NONE; nk->hbin_off = prs_offset( ps ); start = nk->hbin_off; prs_debug(ps, depth, desc, "prs_nk_rec"); depth++; /* back up and get the data_size */ if ( !prs_set_offset( ps, prs_offset(ps)-sizeof(uint32)) ) return False; start_off = prs_offset( ps ); if ( !prs_uint32( "rec_size", ps, depth, &nk->rec_size )) return False; if ( !prs_uint8s( True, "header", ps, depth, (uint8*)nk->header, sizeof( nk->header )) ) return False; if ( !prs_uint16( "key_type", ps, depth, &nk->key_type )) return False; if ( !smb_io_time( "mtime", &nk->mtime, ps, depth )) return False; if ( !prs_set_offset( ps, start+0x0010 ) ) return False; if ( !prs_uint32( "parent_off", ps, depth, &nk->parent_off )) return False; if ( !prs_uint32( "num_subkeys", ps, depth, &nk->num_subkeys )) return False; if ( !prs_set_offset( ps, start+0x001c ) ) return False; if ( !prs_uint32( "subkeys_off", ps, depth, &nk->subkeys_off )) return False; if ( !prs_uint32( "unknown_off", ps, depth, &unknown_off) ) return False; if ( !prs_set_offset( ps, start+0x0024 ) ) return False; if ( !prs_uint32( "num_values", ps, depth, &nk->num_values )) return False; if ( !prs_uint32( "values_off", ps, depth, &nk->values_off )) return False; if ( !prs_uint32( "sk_off", ps, depth, &nk->sk_off )) return False; if ( !prs_uint32( "classname_off", ps, depth, &nk->classname_off )) return False; if ( !prs_uint32( "max_bytes_subkeyname", ps, depth, &nk->max_bytes_subkeyname)) return False; if ( !prs_uint32( "max_bytes_subkeyclassname", ps, depth, &nk->max_bytes_subkeyclassname)) return False; if ( !prs_uint32( "max_bytes_valuename", ps, depth, &nk->max_bytes_valuename)) return False; if ( !prs_uint32( "max_bytes_value", ps, depth, &nk->max_bytes_value)) return False; if ( !prs_uint32( "unknown index", ps, depth, &nk->unk_index)) return False; name_length = nk->keyname ? strlen(nk->keyname) : 0 ; class_length = nk->classname ? strlen(nk->classname) : 0 ; if ( !prs_uint16( "name_length", ps, depth, &name_length )) return False; if ( !prs_uint16( "class_length", ps, depth, &class_length )) return False; if ( class_length ) { ;; } if ( name_length ) { if ( UNMARSHALLING(ps) ) { if ( !(nk->keyname = PRS_ALLOC_MEM( ps, char, name_length+1 )) ) return False; } if ( !prs_uint8s( True, "name", ps, depth, (uint8*)nk->keyname, name_length) ) return False; if ( UNMARSHALLING(ps) ) nk->keyname[name_length] = '\0'; } end_off = prs_offset( ps ); /* data_size must be divisible by 8 and large enough to hold the original record */ data_size = ((start_off - end_off) & 0xfffffff8 ); if ( data_size > nk->rec_size ) DEBUG(10,("Encountered reused record (0x%x < 0x%x)\n", data_size, nk->rec_size)); if ( MARSHALLING(ps) ) nk->hbin->dirty = True; return True; } /******************************************************************* *******************************************************************/ static uint32 regf_block_checksum( prs_struct *ps ) { char *buffer = prs_data_p( ps ); uint32 checksum, x; int i; /* XOR of all bytes 0x0000 - 0x01FB */ checksum = x = 0; for ( i=0; i<0x01FB; i+=4 ) { x = IVAL(buffer, i ); checksum ^= x; } return checksum; } /******************************************************************* *******************************************************************/ static bool read_regf_block( REGF_FILE *file ) { prs_struct ps; uint32 checksum; /* grab the first block from the file */ if ( read_block( file, &ps, 0, REGF_BLOCKSIZE ) == -1 ) return False; /* parse the block and verify the checksum */ if ( !prs_regf_block( "regf_header", &ps, 0, file ) ) return False; checksum = regf_block_checksum( &ps ); prs_mem_free( &ps ); if ( file->checksum != checksum ) { DEBUG(0,("read_regf_block: invalid checksum\n" )); return False; } return True; } /******************************************************************* *******************************************************************/ static REGF_HBIN* read_hbin_block( REGF_FILE *file, off_t offset ) { REGF_HBIN *hbin; uint32 record_size, curr_off, block_size, header; if ( !(hbin = TALLOC_ZERO_P(file->mem_ctx, REGF_HBIN)) ) return NULL; hbin->file_off = offset; hbin->free_off = -1; if ( read_block( file, &hbin->ps, offset, 0 ) == -1 ) return NULL; if ( !prs_hbin_block( "hbin", &hbin->ps, 0, hbin ) ) return NULL; /* this should be the same thing as hbin->block_size but just in case */ block_size = prs_data_size( &hbin->ps ); /* Find the available free space offset. Always at the end, so walk the record list and stop when you get to the end. The end is defined by a record header of 0xffffffff. The previous 4 bytes contains the amount of free space remaining in the hbin block. */ /* remember that the record_size is in the 4 bytes preceeding the record itself */ if ( !prs_set_offset( &hbin->ps, file->data_offset+HBIN_HDR_SIZE-sizeof(uint32) ) ) return False; record_size = 0; header = 0; curr_off = prs_offset( &hbin->ps ); while ( header != 0xffffffff ) { /* not done yet so reset the current offset to the next record_size field */ curr_off = curr_off+record_size; /* for some reason the record_size of the last record in an hbin block can extend past the end of the block even though the record fits within the remaining space....aaarrrgggghhhhhh */ if ( curr_off >= block_size ) { record_size = -1; curr_off = -1; break; } if ( !prs_set_offset( &hbin->ps, curr_off) ) return False; if ( !prs_uint32( "rec_size", &hbin->ps, 0, &record_size ) ) return False; if ( !prs_uint32( "header", &hbin->ps, 0, &header ) ) return False; SMB_ASSERT( record_size != 0 ); if ( record_size & 0x80000000 ) { /* absolute_value(record_size) */ record_size = (record_size ^ 0xffffffff) + 1; } } /* save the free space offset */ if ( header == 0xffffffff ) { /* account for the fact that the curr_off is 4 bytes behind the actual record header */ hbin->free_off = curr_off + sizeof(uint32); hbin->free_size = record_size; } DEBUG(10,("read_hbin_block: free space offset == 0x%x\n", hbin->free_off)); if ( !prs_set_offset( &hbin->ps, file->data_offset+HBIN_HDR_SIZE ) ) return False; return hbin; } /******************************************************************* Input a random offset and receive the corresponding HBIN block for it *******************************************************************/ static bool hbin_contains_offset( REGF_HBIN *hbin, uint32 offset ) { if ( !hbin ) return False; if ( (offset > hbin->first_hbin_off) && (offset < (hbin->first_hbin_off+hbin->block_size)) ) return True; return False; } /******************************************************************* Input a random offset and receive the corresponding HBIN block for it *******************************************************************/ static REGF_HBIN* lookup_hbin_block( REGF_FILE *file, uint32 offset ) { REGF_HBIN *hbin = NULL; uint32 block_off; /* start with the open list */ for ( hbin=file->block_list; hbin; hbin=hbin->next ) { DEBUG(10,("lookup_hbin_block: address = 0x%x [0x%lx]\n", hbin->file_off, (unsigned long)hbin )); if ( hbin_contains_offset( hbin, offset ) ) return hbin; } if ( !hbin ) { /* start at the beginning */ block_off = REGF_BLOCKSIZE; do { /* cleanup before the next round */ if ( hbin ) prs_mem_free( &hbin->ps ); hbin = read_hbin_block( file, block_off ); if ( hbin ) block_off = hbin->file_off + hbin->block_size; } while ( hbin && !hbin_contains_offset( hbin, offset ) ); } if ( hbin ) DLIST_ADD( file->block_list, hbin ); return hbin; } /******************************************************************* *******************************************************************/ static bool prs_hash_rec( const char *desc, prs_struct *ps, int depth, REGF_HASH_REC *hash ) { prs_debug(ps, depth, desc, "prs_hash_rec"); depth++; if ( !prs_uint32( "nk_off", ps, depth, &hash->nk_off )) return False; if ( !prs_uint8s( True, "keycheck", ps, depth, hash->keycheck, sizeof( hash->keycheck )) ) return False; return True; } /******************************************************************* *******************************************************************/ static bool hbin_prs_lf_records( const char *desc, REGF_HBIN *hbin, int depth, REGF_NK_REC *nk ) { int i; REGF_LF_REC *lf = &nk->subkeys; uint32 data_size, start_off, end_off; prs_debug(&hbin->ps, depth, desc, "prs_lf_records"); depth++; /* check if we have anything to do first */ if ( nk->num_subkeys == 0 ) return True; /* move to the LF record */ if ( !prs_set_offset( &hbin->ps, nk->subkeys_off + HBIN_HDR_SIZE - hbin->first_hbin_off ) ) return False; /* backup and get the data_size */ if ( !prs_set_offset( &hbin->ps, prs_offset(&hbin->ps)-sizeof(uint32)) ) return False; start_off = prs_offset( &hbin->ps ); if ( !prs_uint32( "rec_size", &hbin->ps, depth, &lf->rec_size )) return False; if ( !prs_uint8s( True, "header", &hbin->ps, depth, (uint8*)lf->header, sizeof( lf->header )) ) return False; if ( !prs_uint16( "num_keys", &hbin->ps, depth, &lf->num_keys)) return False; if ( UNMARSHALLING(&hbin->ps) ) { if (lf->num_keys) { if ( !(lf->hashes = PRS_ALLOC_MEM( &hbin->ps, REGF_HASH_REC, lf->num_keys )) ) return False; } else { lf->hashes = NULL; } } for ( i=0; i<lf->num_keys; i++ ) { if ( !prs_hash_rec( "hash_rec", &hbin->ps, depth, &lf->hashes[i] ) ) return False; } end_off = prs_offset( &hbin->ps ); /* data_size must be divisible by 8 and large enough to hold the original record */ data_size = ((start_off - end_off) & 0xfffffff8 ); if ( data_size > lf->rec_size ) DEBUG(10,("Encountered reused record (0x%x < 0x%x)\n", data_size, lf->rec_size)); if ( MARSHALLING(&hbin->ps) ) hbin->dirty = True; return True; } /******************************************************************* *******************************************************************/ static bool hbin_prs_sk_rec( const char *desc, REGF_HBIN *hbin, int depth, REGF_SK_REC *sk ) { prs_struct *ps = &hbin->ps; uint16 tag = 0xFFFF; uint32 data_size, start_off, end_off; prs_debug(ps, depth, desc, "hbin_prs_sk_rec"); depth++; if ( !prs_set_offset( &hbin->ps, sk->sk_off + HBIN_HDR_SIZE - hbin->first_hbin_off ) ) return False; /* backup and get the data_size */ if ( !prs_set_offset( &hbin->ps, prs_offset(&hbin->ps)-sizeof(uint32)) ) return False; start_off = prs_offset( &hbin->ps ); if ( !prs_uint32( "rec_size", &hbin->ps, depth, &sk->rec_size )) return False; if ( !prs_uint8s( True, "header", ps, depth, (uint8*)sk->header, sizeof( sk->header )) ) return False; if ( !prs_uint16( "tag", ps, depth, &tag)) return False; if ( !prs_uint32( "prev_sk_off", ps, depth, &sk->prev_sk_off)) return False; if ( !prs_uint32( "next_sk_off", ps, depth, &sk->next_sk_off)) return False; if ( !prs_uint32( "ref_count", ps, depth, &sk->ref_count)) return False; if ( !prs_uint32( "size", ps, depth, &sk->size)) return False; if ( !sec_io_desc( "sec_desc", &sk->sec_desc, ps, depth )) return False; end_off = prs_offset( &hbin->ps ); /* data_size must be divisible by 8 and large enough to hold the original record */ data_size = ((start_off - end_off) & 0xfffffff8 ); if ( data_size > sk->rec_size ) DEBUG(10,("Encountered reused record (0x%x < 0x%x)\n", data_size, sk->rec_size)); if ( MARSHALLING(&hbin->ps) ) hbin->dirty = True; return True; } /******************************************************************* *******************************************************************/ static bool hbin_prs_vk_rec( const char *desc, REGF_HBIN *hbin, int depth, REGF_VK_REC *vk, REGF_FILE *file ) { uint32 offset; uint16 name_length; prs_struct *ps = &hbin->ps; uint32 data_size, start_off, end_off; prs_debug(ps, depth, desc, "prs_vk_rec"); depth++; /* backup and get the data_size */ if ( !prs_set_offset( &hbin->ps, prs_offset(&hbin->ps)-sizeof(uint32)) ) return False; start_off = prs_offset( &hbin->ps ); if ( !prs_uint32( "rec_size", &hbin->ps, depth, &vk->rec_size )) return False; if ( !prs_uint8s( True, "header", ps, depth, (uint8*)vk->header, sizeof( vk->header )) ) return False; if ( MARSHALLING(&hbin->ps) ) name_length = strlen(vk->valuename); if ( !prs_uint16( "name_length", ps, depth, &name_length )) return False; if ( !prs_uint32( "data_size", ps, depth, &vk->data_size )) return False; if ( !prs_uint32( "data_off", ps, depth, &vk->data_off )) return False; if ( !prs_uint32( "type", ps, depth, &vk->type)) return False; if ( !prs_uint16( "flag", ps, depth, &vk->flag)) return False; offset = prs_offset( ps ); offset += 2; /* skip 2 bytes */ prs_set_offset( ps, offset ); /* get the name */ if ( vk->flag&VK_FLAG_NAME_PRESENT ) { if ( UNMARSHALLING(&hbin->ps) ) { if ( !(vk->valuename = PRS_ALLOC_MEM( ps, char, name_length+1 ))) return False; } if ( !prs_uint8s( True, "name", ps, depth, (uint8*)vk->valuename, name_length ) ) return False; } end_off = prs_offset( &hbin->ps ); /* get the data if necessary */ if ( vk->data_size != 0 ) { bool charmode = False; if ( (vk->type == REG_SZ) || (vk->type == REG_MULTI_SZ) ) charmode = True; /* the data is stored in the offset if the size <= 4 */ if ( !(vk->data_size & VK_DATA_IN_OFFSET) ) { REGF_HBIN *hblock = hbin; uint32 data_rec_size; if ( UNMARSHALLING(&hbin->ps) ) { if ( !(vk->data = PRS_ALLOC_MEM( ps, uint8, vk->data_size) ) ) return False; } /* this data can be in another hbin */ if ( !hbin_contains_offset( hbin, vk->data_off ) ) { if ( !(hblock = lookup_hbin_block( file, vk->data_off )) ) return False; } if ( !(prs_set_offset( &hblock->ps, (vk->data_off+HBIN_HDR_SIZE-hblock->first_hbin_off)-sizeof(uint32) )) ) return False; if ( MARSHALLING(&hblock->ps) ) { data_rec_size = ( (vk->data_size+sizeof(uint32)) & 0xfffffff8 ) + 8; data_rec_size = ( data_rec_size - 1 ) ^ 0xFFFFFFFF; } if ( !prs_uint32( "data_rec_size", &hblock->ps, depth, &data_rec_size )) return False; if ( !prs_uint8s( charmode, "data", &hblock->ps, depth, vk->data, vk->data_size) ) return False; if ( MARSHALLING(&hblock->ps) ) hblock->dirty = True; } else { if ( !(vk->data = PRS_ALLOC_MEM( ps, uint8, 4 ) ) ) return False; SIVAL( vk->data, 0, vk->data_off ); } } /* data_size must be divisible by 8 and large enough to hold the original record */ data_size = ((start_off - end_off ) & 0xfffffff8 ); if ( data_size != vk->rec_size ) DEBUG(10,("prs_vk_rec: data_size check failed (0x%x < 0x%x)\n", data_size, vk->rec_size)); if ( MARSHALLING(&hbin->ps) ) hbin->dirty = True; return True; } /******************************************************************* read a VK record which is contained in the HBIN block stored in the prs_struct *ps. *******************************************************************/ static bool hbin_prs_vk_records( const char *desc, REGF_HBIN *hbin, int depth, REGF_NK_REC *nk, REGF_FILE *file ) { int i; uint32 record_size; prs_debug(&hbin->ps, depth, desc, "prs_vk_records"); depth++; /* check if we have anything to do first */ if ( nk->num_values == 0 ) return True; if ( UNMARSHALLING(&hbin->ps) ) { if ( !(nk->values = PRS_ALLOC_MEM( &hbin->ps, REGF_VK_REC, nk->num_values ) ) ) return False; } /* convert the offset to something relative to this HBIN block */ if ( !prs_set_offset( &hbin->ps, nk->values_off+HBIN_HDR_SIZE-hbin->first_hbin_off-sizeof(uint32)) ) return False; if ( MARSHALLING( &hbin->ps) ) { record_size = ( ( nk->num_values * sizeof(uint32) ) & 0xfffffff8 ) + 8; record_size = (record_size - 1) ^ 0xFFFFFFFF; } if ( !prs_uint32( "record_size", &hbin->ps, depth, &record_size ) ) return False; for ( i=0; i<nk->num_values; i++ ) { if ( !prs_uint32( "vk_off", &hbin->ps, depth, &nk->values[i].rec_off ) ) return False; } for ( i=0; i<nk->num_values; i++ ) { REGF_HBIN *sub_hbin = hbin; uint32 new_offset; if ( !hbin_contains_offset( hbin, nk->values[i].rec_off ) ) { sub_hbin = lookup_hbin_block( file, nk->values[i].rec_off ); if ( !sub_hbin ) { DEBUG(0,("hbin_prs_vk_records: Failed to find HBIN block containing offset [0x%x]\n", nk->values[i].hbin_off)); return False; } } new_offset = nk->values[i].rec_off + HBIN_HDR_SIZE - sub_hbin->first_hbin_off; if ( !prs_set_offset( &sub_hbin->ps, new_offset ) ) return False; if ( !hbin_prs_vk_rec( "vk_rec", sub_hbin, depth, &nk->values[i], file ) ) return False; } if ( MARSHALLING(&hbin->ps) ) hbin->dirty = True; return True; } /******************************************************************* *******************************************************************/ static REGF_SK_REC* find_sk_record_by_offset( REGF_FILE *file, uint32 offset ) { REGF_SK_REC *p_sk; for ( p_sk=file->sec_desc_list; p_sk; p_sk=p_sk->next ) { if ( p_sk->sk_off == offset ) return p_sk; } return NULL; } /******************************************************************* *******************************************************************/ static REGF_SK_REC* find_sk_record_by_sec_desc( REGF_FILE *file, SEC_DESC *sd ) { REGF_SK_REC *p; for ( p=file->sec_desc_list; p; p=p->next ) { if ( sec_desc_equal( p->sec_desc, sd ) ) return p; } /* failure */ return NULL; } /******************************************************************* *******************************************************************/ static bool hbin_prs_key( REGF_FILE *file, REGF_HBIN *hbin, REGF_NK_REC *nk ) { int depth = 0; REGF_HBIN *sub_hbin; prs_debug(&hbin->ps, depth, "", "fetch_key"); depth++; /* get the initial nk record */ if ( !prs_nk_rec( "nk_rec", &hbin->ps, depth, nk )) return False; /* fill in values */ if ( nk->num_values && (nk->values_off!=REGF_OFFSET_NONE) ) { sub_hbin = hbin; if ( !hbin_contains_offset( hbin, nk->values_off ) ) { sub_hbin = lookup_hbin_block( file, nk->values_off ); if ( !sub_hbin ) { DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing value_list_offset [0x%x]\n", nk->values_off)); return False; } } if ( !hbin_prs_vk_records( "vk_rec", sub_hbin, depth, nk, file )) return False; } /* now get subkeys */ if ( nk->num_subkeys && (nk->subkeys_off!=REGF_OFFSET_NONE) ) { sub_hbin = hbin; if ( !hbin_contains_offset( hbin, nk->subkeys_off ) ) { sub_hbin = lookup_hbin_block( file, nk->subkeys_off ); if ( !sub_hbin ) { DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing subkey_offset [0x%x]\n", nk->subkeys_off)); return False; } } if ( !hbin_prs_lf_records( "lf_rec", sub_hbin, depth, nk )) return False; } /* get the to the security descriptor. First look if we have already parsed it */ if ( (nk->sk_off!=REGF_OFFSET_NONE) && !( nk->sec_desc = find_sk_record_by_offset( file, nk->sk_off )) ) { sub_hbin = hbin; if ( !hbin_contains_offset( hbin, nk->sk_off ) ) { sub_hbin = lookup_hbin_block( file, nk->sk_off ); if ( !sub_hbin ) { DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing sk_offset [0x%x]\n", nk->subkeys_off)); return False; } } if ( !(nk->sec_desc = TALLOC_ZERO_P( file->mem_ctx, REGF_SK_REC )) ) return False; nk->sec_desc->sk_off = nk->sk_off; if ( !hbin_prs_sk_rec( "sk_rec", sub_hbin, depth, nk->sec_desc )) return False; /* add to the list of security descriptors (ref_count has been read from the files) */ nk->sec_desc->sk_off = nk->sk_off; DLIST_ADD( file->sec_desc_list, nk->sec_desc ); } return True; } /******************************************************************* *******************************************************************/ static bool next_record( REGF_HBIN *hbin, const char *hdr, bool *eob ) { uint8 header[REC_HDR_SIZE]; uint32 record_size; uint32 curr_off, block_size; bool found = False; prs_struct *ps = &hbin->ps; curr_off = prs_offset( ps ); if ( curr_off == 0 ) prs_set_offset( ps, HBIN_HEADER_REC_SIZE ); /* assume that the current offset is at the record header and we need to backup to read the record size */ curr_off -= sizeof(uint32); block_size = prs_data_size( ps ); record_size = 0; memset( header, 0x0, sizeof(uint8)*REC_HDR_SIZE ); while ( !found ) { curr_off = curr_off+record_size; if ( curr_off >= block_size ) break; if ( !prs_set_offset( &hbin->ps, curr_off) ) return False; if ( !prs_uint32( "record_size", ps, 0, &record_size ) ) return False; if ( !prs_uint8s( True, "header", ps, 0, header, REC_HDR_SIZE ) ) return False; if ( record_size & 0x80000000 ) { /* absolute_value(record_size) */ record_size = (record_size ^ 0xffffffff) + 1; } if ( memcmp( header, hdr, REC_HDR_SIZE ) == 0 ) { found = True; curr_off += sizeof(uint32); } } /* mark prs_struct as done ( at end ) if no more SK records */ /* mark end-of-block as True */ if ( !found ) { prs_set_offset( &hbin->ps, prs_data_size(&hbin->ps) ); *eob = True; return False; } if ( !prs_set_offset( ps, curr_off ) ) return False; return True; } /******************************************************************* *******************************************************************/ static bool next_nk_record( REGF_FILE *file, REGF_HBIN *hbin, REGF_NK_REC *nk, bool *eob ) { if ( next_record( hbin, "nk", eob ) && hbin_prs_key( file, hbin, nk ) ) return True; return False; } /******************************************************************* Intialize the newly created REGF_BLOCK in *file and write the block header to disk *******************************************************************/ static bool init_regf_block( REGF_FILE *file ) { prs_struct ps; bool result = True; if ( !prs_init( &ps, REGF_BLOCKSIZE, file->mem_ctx, MARSHALL ) ) return False; memcpy( file->header, "regf", REGF_HDR_SIZE ); file->data_offset = 0x20; file->last_block = 0x1000; /* set mod time */ unix_to_nt_time( &file->mtime, time(NULL) ); /* hard coded values...no diea what these are ... maybe in time */ file->unknown1 = 0x2; file->unknown2 = 0x1; file->unknown3 = 0x3; file->unknown4 = 0x0; file->unknown5 = 0x1; file->unknown6 = 0x1; /* write header to the buffer */ if ( !prs_regf_block( "regf_header", &ps, 0, file ) ) { result = False; goto out; } /* calculate the checksum, re-marshall data (to include the checksum) and write to disk */ file->checksum = regf_block_checksum( &ps ); prs_set_offset( &ps, 0 ); if ( !prs_regf_block( "regf_header", &ps, 0, file ) ) { result = False; goto out; } if ( write_block( file, &ps, 0 ) == -1 ) { DEBUG(0,("init_regf_block: Failed to initialize registry header block!\n")); result = False; goto out; } out: prs_mem_free( &ps ); return result; } /******************************************************************* Open the registry file and then read in the REGF block to get the first hbin offset. *******************************************************************/ REGF_FILE* regfio_open( const char *filename, int flags, int mode ) { REGF_FILE *rb; if ( !(rb = SMB_MALLOC_P(REGF_FILE)) ) { DEBUG(0,("ERROR allocating memory\n")); return NULL; } ZERO_STRUCTP( rb ); rb->fd = -1; if ( !(rb->mem_ctx = talloc_init( "read_regf_block" )) ) { regfio_close( rb ); SAFE_FREE(rb); return NULL; } rb->open_flags = flags; /* open and existing file */ if ( (rb->fd = open(filename, flags, mode)) == -1 ) { DEBUG(0,("regfio_open: failure to open %s (%s)\n", filename, strerror(errno))); regfio_close( rb ); SAFE_FREE(rb); return NULL; } /* check if we are creating a new file or overwriting an existing one */ if ( flags & (O_CREAT|O_TRUNC) ) { if ( !init_regf_block( rb ) ) { DEBUG(0,("regfio_open: Failed to read initial REGF block\n")); regfio_close( rb ); SAFE_FREE(rb); return NULL; } /* success */ return rb; } /* read in an existing file */ if ( !read_regf_block( rb ) ) { DEBUG(0,("regfio_open: Failed to read initial REGF block\n")); regfio_close( rb ); SAFE_FREE(rb); return NULL; } /* success */ return rb; } /******************************************************************* *******************************************************************/ static void regfio_mem_free( REGF_FILE *file ) { /* free any talloc()'d memory */ if ( file && file->mem_ctx ) talloc_destroy( file->mem_ctx ); } /******************************************************************* *******************************************************************/ int regfio_close( REGF_FILE *file ) { int fd; /* cleanup for a file opened for write */ if ((file->fd != -1) && (file->open_flags & (O_WRONLY|O_RDWR))) { prs_struct ps; REGF_SK_REC *sk; /* write of sd list */ for ( sk=file->sec_desc_list; sk; sk=sk->next ) { hbin_prs_sk_rec( "sk_rec", sk->hbin, 0, sk ); } /* flush any dirty blocks */ while ( file->block_list ) { hbin_block_close( file, file->block_list ); } ZERO_STRUCT( ps ); unix_to_nt_time( &file->mtime, time(NULL) ); if ( read_block( file, &ps, 0, REGF_BLOCKSIZE ) != -1 ) { /* now use for writing */ prs_switch_type( &ps, MARSHALL ); /* stream the block once, generate the checksum, and stream it again */ prs_set_offset( &ps, 0 ); prs_regf_block( "regf_blocK", &ps, 0, file ); file->checksum = regf_block_checksum( &ps ); prs_set_offset( &ps, 0 ); prs_regf_block( "regf_blocK", &ps, 0, file ); /* now we are ready to write it to disk */ if ( write_block( file, &ps, 0 ) == -1 ) DEBUG(0,("regfio_close: failed to update the regf header block!\n")); } prs_mem_free( &ps ); } regfio_mem_free( file ); /* nothing tdo do if there is no open file */ if ( !file || (file->fd == -1) ) return 0; fd = file->fd; file->fd = -1; SAFE_FREE( file ); return close( fd ); } /******************************************************************* *******************************************************************/ static void regfio_flush( REGF_FILE *file ) { REGF_HBIN *hbin; for ( hbin=file->block_list; hbin; hbin=hbin->next ) { write_hbin_block( file, hbin ); } } /******************************************************************* There should be only *one* root key in the registry file based on my experience. --jerry *******************************************************************/ REGF_NK_REC* regfio_rootkey( REGF_FILE *file ) { REGF_NK_REC *nk; REGF_HBIN *hbin; uint32 offset = REGF_BLOCKSIZE; bool found = False; bool eob; if ( !file ) return NULL; if ( !(nk = TALLOC_ZERO_P( file->mem_ctx, REGF_NK_REC )) ) { DEBUG(0,("regfio_rootkey: talloc() failed!\n")); return NULL; } /* scan through the file on HBIN block at a time looking for an NK record with a type == 0x002c. Normally this is the first nk record in the first hbin block (but I'm not assuming that for now) */ while ( (hbin = read_hbin_block( file, offset )) ) { eob = False; while ( !eob) { if ( next_nk_record( file, hbin, nk, &eob ) ) { if ( nk->key_type == NK_TYPE_ROOTKEY ) { found = True; break; } } prs_mem_free( &hbin->ps ); } if ( found ) break; offset += hbin->block_size; } if ( !found ) { DEBUG(0,("regfio_rootkey: corrupt registry file ? No root key record located\n")); return NULL; } DLIST_ADD( file->block_list, hbin ); return nk; } /******************************************************************* This acts as an interator over the subkeys defined for a given NK record. Remember that offsets are from the *first* HBIN block. *******************************************************************/ REGF_NK_REC* regfio_fetch_subkey( REGF_FILE *file, REGF_NK_REC *nk ) { REGF_NK_REC *subkey; REGF_HBIN *hbin; uint32 nk_offset; /* see if there is anything left to report */ if ( !nk || (nk->subkeys_off==REGF_OFFSET_NONE) || (nk->subkey_index >= nk->num_subkeys) ) return NULL; /* find the HBIN block which should contain the nk record */ if ( !(hbin = lookup_hbin_block( file, nk->subkeys.hashes[nk->subkey_index].nk_off )) ) { DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing offset [0x%x]\n", nk->subkeys.hashes[nk->subkey_index].nk_off)); return NULL; } nk_offset = nk->subkeys.hashes[nk->subkey_index].nk_off; if ( !prs_set_offset( &hbin->ps, (HBIN_HDR_SIZE + nk_offset - hbin->first_hbin_off) ) ) return NULL; nk->subkey_index++; if ( !(subkey = TALLOC_ZERO_P( file->mem_ctx, REGF_NK_REC )) ) return NULL; if ( !hbin_prs_key( file, hbin, subkey ) ) return NULL; return subkey; } /******************************************************************* *******************************************************************/ static REGF_HBIN* regf_hbin_allocate( REGF_FILE *file, uint32 block_size ) { REGF_HBIN *hbin; SMB_STRUCT_STAT sbuf; if ( !(hbin = TALLOC_ZERO_P( file->mem_ctx, REGF_HBIN )) ) return NULL; memcpy( hbin->header, "hbin", sizeof(HBIN_HDR_SIZE) ); if ( sys_fstat( file->fd, &sbuf ) ) { DEBUG(0,("regf_hbin_allocate: stat() failed! (%s)\n", strerror(errno))); return NULL; } hbin->file_off = sbuf.st_size; hbin->free_off = HBIN_HEADER_REC_SIZE; hbin->free_size = block_size - hbin->free_off + sizeof(uint32);; hbin->block_size = block_size; hbin->first_hbin_off = hbin->file_off - REGF_BLOCKSIZE; if ( !prs_init( &hbin->ps, block_size, file->mem_ctx, MARSHALL ) ) return NULL; if ( !prs_hbin_block( "new_hbin", &hbin->ps, 0, hbin ) ) return NULL; if ( !write_hbin_block( file, hbin ) ) return NULL; file->last_block = hbin->file_off; return hbin; } /******************************************************************* *******************************************************************/ static void update_free_space( REGF_HBIN *hbin, uint32 size_used ) { hbin->free_off += size_used; hbin->free_size -= size_used; if ( hbin->free_off >= hbin->block_size ) { hbin->free_off = REGF_OFFSET_NONE; } return; } /******************************************************************* *******************************************************************/ static REGF_HBIN* find_free_space( REGF_FILE *file, uint32 size ) { REGF_HBIN *hbin, *p_hbin; uint32 block_off; bool cached; /* check open block list */ for ( hbin=file->block_list; hbin!=NULL; hbin=hbin->next ) { /* only check blocks that actually have available space */ if ( hbin->free_off == REGF_OFFSET_NONE ) continue; /* check for a large enough available chunk */ if ( (hbin->block_size - hbin->free_off) >= size ) { DLIST_PROMOTE( file->block_list, hbin ); goto done; } } /* parse the file until we find a block with enough free space; save the last non-filled hbin */ block_off = REGF_BLOCKSIZE; do { /* cleanup before the next round */ cached = False; if ( hbin ) prs_mem_free( &hbin->ps ); hbin = read_hbin_block( file, block_off ); if ( hbin ) { /* make sure that we don't already have this block in memory */ for ( p_hbin=file->block_list; p_hbin!=NULL; p_hbin=p_hbin->next ) { if ( p_hbin->file_off == hbin->file_off ) { cached = True; break; } } block_off = hbin->file_off + hbin->block_size; if ( cached ) { prs_mem_free( &hbin->ps ); hbin = NULL; continue; } } /* if (cached block or (new block and not enough free space)) then continue looping */ } while ( cached || (hbin && (hbin->free_size < size)) ); /* no free space; allocate a new one */ if ( !hbin ) { uint32 alloc_size; /* allocate in multiples of REGF_ALLOC_BLOCK; make sure (size + hbin_header) fits */ alloc_size = (((size+HBIN_HEADER_REC_SIZE) / REGF_ALLOC_BLOCK ) + 1 ) * REGF_ALLOC_BLOCK; if ( !(hbin = regf_hbin_allocate( file, alloc_size )) ) { DEBUG(0,("find_free_space: regf_hbin_allocate() failed!\n")); return NULL; } DLIST_ADD( file->block_list, hbin ); } done: /* set the offset to be ready to write */ if ( !prs_set_offset( &hbin->ps, hbin->free_off-sizeof(uint32) ) ) return NULL; /* write the record size as a placeholder for now, it should be probably updated by the caller once it all of the data necessary for the record */ if ( !prs_uint32("allocated_size", &hbin->ps, 0, &size) ) return False; update_free_space( hbin, size ); return hbin; } /******************************************************************* *******************************************************************/ static uint32 sk_record_data_size( SEC_DESC * sd ) { uint32 size, size_mod8; size_mod8 = 0; /* the record size is sizeof(hdr) + name + static members + data_size_field */ size = sizeof(uint32)*5 + ndr_size_security_descriptor(sd, 0) + sizeof(uint32); /* multiple of 8 */ size_mod8 = size & 0xfffffff8; if ( size_mod8 < size ) size_mod8 += 8; return size_mod8; } /******************************************************************* *******************************************************************/ static uint32 vk_record_data_size( REGF_VK_REC *vk ) { uint32 size, size_mod8; size_mod8 = 0; /* the record size is sizeof(hdr) + name + static members + data_size_field */ size = REC_HDR_SIZE + (sizeof(uint16)*3) + (sizeof(uint32)*3) + sizeof(uint32); if ( vk->valuename ) size += strlen(vk->valuename); /* multiple of 8 */ size_mod8 = size & 0xfffffff8; if ( size_mod8 < size ) size_mod8 += 8; return size_mod8; } /******************************************************************* *******************************************************************/ static uint32 lf_record_data_size( uint32 num_keys ) { uint32 size, size_mod8; size_mod8 = 0; /* the record size is sizeof(hdr) + num_keys + sizeof of hash_array + data_size_uint32 */ size = REC_HDR_SIZE + sizeof(uint16) + (sizeof(REGF_HASH_REC) * num_keys) + sizeof(uint32); /* multiple of 8 */ size_mod8 = size & 0xfffffff8; if ( size_mod8 < size ) size_mod8 += 8; return size_mod8; } /******************************************************************* *******************************************************************/ static uint32 nk_record_data_size( REGF_NK_REC *nk ) { uint32 size, size_mod8; size_mod8 = 0; /* the record size is static + length_of_keyname + length_of_classname + data_size_uint32 */ size = 0x4c + strlen(nk->keyname) + sizeof(uint32); if ( nk->classname ) size += strlen( nk->classname ); /* multiple of 8 */ size_mod8 = size & 0xfffffff8; if ( size_mod8 < size ) size_mod8 += 8; return size_mod8; } /******************************************************************* *******************************************************************/ static bool create_vk_record( REGF_FILE *file, REGF_VK_REC *vk, REGISTRY_VALUE *value ) { char *name = regval_name(value); REGF_HBIN *data_hbin; ZERO_STRUCTP( vk ); memcpy( vk->header, "vk", REC_HDR_SIZE ); if ( name ) { vk->valuename = talloc_strdup( file->mem_ctx, regval_name(value) ); vk->flag = VK_FLAG_NAME_PRESENT; } vk->data_size = regval_size( value ); vk->type = regval_type( value ); if ( vk->data_size > sizeof(uint32) ) { uint32 data_size = ( (vk->data_size+sizeof(uint32)) & 0xfffffff8 ) + 8; vk->data = (uint8 *)TALLOC_MEMDUP( file->mem_ctx, regval_data_p(value), vk->data_size ); if (vk->data == NULL) { return False; } /* go ahead and store the offset....we'll pick this hbin block back up when we stream the data */ if ((data_hbin = find_free_space(file, data_size )) == NULL) { return False; } vk->data_off = prs_offset( &data_hbin->ps ) + data_hbin->first_hbin_off - HBIN_HDR_SIZE; } else { /* make sure we don't try to copy from a NULL value pointer */ if ( vk->data_size != 0 ) memcpy( &vk->data_off, regval_data_p(value), sizeof(uint32) ); vk->data_size |= VK_DATA_IN_OFFSET; } return True; } /******************************************************************* *******************************************************************/ static int hashrec_cmp( REGF_HASH_REC *h1, REGF_HASH_REC *h2 ) { return StrCaseCmp( h1->fullname, h2->fullname ); } /******************************************************************* *******************************************************************/ REGF_NK_REC* regfio_write_key( REGF_FILE *file, const char *name, REGVAL_CTR *values, REGSUBKEY_CTR *subkeys, SEC_DESC *sec_desc, REGF_NK_REC *parent ) { REGF_NK_REC *nk; REGF_HBIN *vlist_hbin = NULL; uint32 size; if ( !(nk = TALLOC_ZERO_P( file->mem_ctx, REGF_NK_REC )) ) return NULL; memcpy( nk->header, "nk", REC_HDR_SIZE ); if ( !parent ) nk->key_type = NK_TYPE_ROOTKEY; else nk->key_type = NK_TYPE_NORMALKEY; /* store the parent offset (or -1 if a the root key */ nk->parent_off = parent ? (parent->hbin_off + parent->hbin->file_off - REGF_BLOCKSIZE - HBIN_HDR_SIZE ) : REGF_OFFSET_NONE; /* no classname currently */ nk->classname_off = REGF_OFFSET_NONE; nk->classname = NULL; nk->keyname = talloc_strdup( file->mem_ctx, name ); /* current modification time */ unix_to_nt_time( &nk->mtime, time(NULL) ); /* allocate the record on disk */ size = nk_record_data_size( nk ); nk->rec_size = ( size - 1 ) ^ 0XFFFFFFFF; if ((nk->hbin = find_free_space( file, size )) == NULL) { return NULL; } nk->hbin_off = prs_offset( &nk->hbin->ps ); /* Update the hash record in the parent */ if ( parent ) { REGF_HASH_REC *hash = &parent->subkeys.hashes[parent->subkey_index]; hash->nk_off = prs_offset( &nk->hbin->ps ) + nk->hbin->first_hbin_off - HBIN_HDR_SIZE; memcpy( hash->keycheck, name, sizeof(uint32) ); hash->fullname = talloc_strdup( file->mem_ctx, name ); parent->subkey_index++; /* sort the list by keyname */ qsort( parent->subkeys.hashes, parent->subkey_index, sizeof(REGF_HASH_REC), QSORT_CAST hashrec_cmp ); if ( !hbin_prs_lf_records( "lf_rec", parent->subkeys.hbin, 0, parent ) ) return False; } /* write the security descriptor */ nk->sk_off = REGF_OFFSET_NONE; if ( sec_desc ) { uint32 sk_size = sk_record_data_size( sec_desc ); REGF_HBIN *sk_hbin; /* search for it in the existing list of sd's */ if ( (nk->sec_desc = find_sk_record_by_sec_desc( file, sec_desc )) == NULL ) { /* not found so add it to the list */ if (!(sk_hbin = find_free_space( file, sk_size ))) { return NULL; } if ( !(nk->sec_desc = TALLOC_ZERO_P( file->mem_ctx, REGF_SK_REC )) ) return NULL; /* now we have to store the security descriptor in the list and update the offsets */ memcpy( nk->sec_desc->header, "sk", REC_HDR_SIZE ); nk->sec_desc->hbin = sk_hbin; nk->sec_desc->hbin_off = prs_offset( &sk_hbin->ps ); nk->sec_desc->sk_off = prs_offset( &sk_hbin->ps ) + sk_hbin->first_hbin_off - HBIN_HDR_SIZE; nk->sec_desc->rec_size = (sk_size-1) ^ 0xFFFFFFFF; nk->sec_desc->sec_desc = sec_desc; nk->sec_desc->ref_count = 0; /* size value must be self-inclusive */ nk->sec_desc->size = ndr_size_security_descriptor(sec_desc, 0) + sizeof(uint32); DLIST_ADD_END( file->sec_desc_list, nk->sec_desc, REGF_SK_REC *); /* update the offsets for us and the previous sd in the list. if this is the first record, then just set the next and prev offsets to ourself. */ if ( nk->sec_desc->prev ) { REGF_SK_REC *prev = nk->sec_desc->prev; nk->sec_desc->prev_sk_off = prev->hbin_off + prev->hbin->first_hbin_off - HBIN_HDR_SIZE; prev->next_sk_off = nk->sec_desc->sk_off; /* the end must loop around to the front */ nk->sec_desc->next_sk_off = file->sec_desc_list->sk_off; /* and first must loop around to the tail */ file->sec_desc_list->prev_sk_off = nk->sec_desc->sk_off; } else { nk->sec_desc->prev_sk_off = nk->sec_desc->sk_off; nk->sec_desc->next_sk_off = nk->sec_desc->sk_off; } } /* bump the reference count +1 */ nk->sk_off = nk->sec_desc->sk_off; nk->sec_desc->ref_count++; } /* write the subkeys */ nk->subkeys_off = REGF_OFFSET_NONE; if ( (nk->num_subkeys = regsubkey_ctr_numkeys( subkeys )) != 0 ) { uint32 lf_size = lf_record_data_size( nk->num_subkeys ); uint32 namelen; int i; if (!(nk->subkeys.hbin = find_free_space( file, lf_size ))) { return NULL; } nk->subkeys.hbin_off = prs_offset( &nk->subkeys.hbin->ps ); nk->subkeys.rec_size = (lf_size-1) ^ 0xFFFFFFFF; nk->subkeys_off = prs_offset( &nk->subkeys.hbin->ps ) + nk->subkeys.hbin->first_hbin_off - HBIN_HDR_SIZE; memcpy( nk->subkeys.header, "lf", REC_HDR_SIZE ); nk->subkeys.num_keys = nk->num_subkeys; if (nk->subkeys.num_keys) { if ( !(nk->subkeys.hashes = TALLOC_ZERO_ARRAY( file->mem_ctx, REGF_HASH_REC, nk->subkeys.num_keys )) ) return NULL; } else { nk->subkeys.hashes = NULL; } nk->subkey_index = 0; /* update the max_bytes_subkey{name,classname} fields */ for ( i=0; i<nk->num_subkeys; i++ ) { namelen = strlen( regsubkey_ctr_specific_key(subkeys, i) ); if ( namelen*2 > nk->max_bytes_subkeyname ) nk->max_bytes_subkeyname = namelen * 2; } } /* write the values */ nk->values_off = REGF_OFFSET_NONE; if ( (nk->num_values = regval_ctr_numvals( values )) != 0 ) { uint32 vlist_size = ( ( nk->num_values * sizeof(uint32) ) & 0xfffffff8 ) + 8; int i; if (!(vlist_hbin = find_free_space( file, vlist_size ))) { return NULL; } nk->values_off = prs_offset( &vlist_hbin->ps ) + vlist_hbin->first_hbin_off - HBIN_HDR_SIZE; if (nk->num_values) { if ( !(nk->values = TALLOC_ARRAY( file->mem_ctx, REGF_VK_REC, nk->num_values )) ) return NULL; } else { nk->values = NULL; } /* create the vk records */ for ( i=0; i<nk->num_values; i++ ) { uint32 vk_size, namelen, datalen; REGISTRY_VALUE *r; r = regval_ctr_specific_value( values, i ); create_vk_record( file, &nk->values[i], r ); vk_size = vk_record_data_size( &nk->values[i] ); nk->values[i].hbin = find_free_space( file, vk_size ); nk->values[i].hbin_off = prs_offset( &nk->values[i].hbin->ps ); nk->values[i].rec_size = ( vk_size - 1 ) ^ 0xFFFFFFFF; nk->values[i].rec_off = prs_offset( &nk->values[i].hbin->ps ) + nk->values[i].hbin->first_hbin_off - HBIN_HDR_SIZE; /* update the max bytes fields if necessary */ namelen = strlen( regval_name(r) ); if ( namelen*2 > nk->max_bytes_valuename ) nk->max_bytes_valuename = namelen * 2; datalen = regval_size( r ); if ( datalen > nk->max_bytes_value ) nk->max_bytes_value = datalen; } } /* stream the records */ prs_set_offset( &nk->hbin->ps, nk->hbin_off ); if ( !prs_nk_rec( "nk_rec", &nk->hbin->ps, 0, nk ) ) return False; if ( nk->num_values ) { if ( !hbin_prs_vk_records( "vk_records", vlist_hbin, 0, nk, file ) ) return False; } regfio_flush( file ); return nk; }