2 * Unix SMB/CIFS implementation.
3 * Windows NT registry I/O library
4 * Copyright (c) Gerald (Jerry) Carter 2005
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 /************************************************************
22 * Most of this information was obtained from
23 * http://www.wednesday.demon.co.uk/dosreg.html
25 ***********************************************************/
33 #define REGF_BLOCKSIZE 0x1000
34 #define REGF_ALLOC_BLOCK 0x1000
36 /* header sizes for various records */
38 #define REGF_HDR_SIZE 4
39 #define HBIN_HDR_SIZE 4
40 #define HBIN_HEADER_REC_SIZE 0x24
41 #define REC_HDR_SIZE 2
43 #define REGF_OFFSET_NONE 0xffffffff
45 /* Flags for the vk records */
47 #define VK_FLAG_NAME_PRESENT 0x0001
48 #define VK_DATA_IN_OFFSET 0x80000000
50 /* NK record macros */
52 #define NK_TYPE_LINKKEY 0x0010
53 #define NK_TYPE_NORMALKEY 0x0020
54 #define NK_TYPE_ROOTKEY 0x002c
56 #define HBIN_STORE_REF(x, y) { x->hbin = y; y->ref_count++ };
57 #define HBIN_REMOVE_REF(x, y) { x->hbin = NULL; y->ref_count-- /* if the count == 0; we can clean up */ };
62 typedef struct regf_hbin {
63 struct regf_hbin *prev, *next;
64 uint32 file_off; /* my offset in the registry file */
65 uint32 free_off; /* offset to free space within the hbin record */
66 uint32 free_size; /* amount of data left in the block */
67 int ref_count; /* how many active records are pointing to this block (not used currently) */
69 char header[HBIN_HDR_SIZE]; /* "hbin" */
70 uint32 first_hbin_off; /* offset from first hbin block */
71 uint32 block_size; /* block size of this blockually a multiple of 4096Kb) */
73 prs_struct ps; /* data */
75 BOOL dirty; /* has this hbin block been modified? */
78 /* ??? List -- list of key offsets and hashed names for consistency */
82 uint8 keycheck[sizeof(uint32)];
87 REGF_HBIN *hbin; /* pointer to HBIN record (in memory) containing this nk record */
88 uint32 hbin_off; /* offset from beginning of this hbin block */
89 uint32 rec_size; /* ((start_offset - end_offset) & 0xfffffff8) */
91 char header[REC_HDR_SIZE];
93 REGF_HASH_REC *hashes;
99 REGF_HBIN *hbin; /* pointer to HBIN record (in memory) containing this nk record */
100 uint32 hbin_off; /* offset from beginning of this hbin block */
101 uint32 rec_size; /* ((start_offset - end_offset) & 0xfffffff8) */
102 uint32 rec_off; /* offset stored in the value list */
104 char header[REC_HDR_SIZE];
117 typedef struct _regf_sk_rec {
118 struct _regf_sk_rec *next, *prev;
119 REGF_HBIN *hbin; /* pointer to HBIN record (in memory) containing this nk record */
120 uint32 hbin_off; /* offset from beginning of this hbin block */
121 uint32 rec_size; /* ((start_offset - end_offset) & 0xfffffff8) */
123 uint32 sk_off; /* offset parsed from NK record used as a key
124 to lookup reference to this SK record */
126 char header[REC_HDR_SIZE];
137 REGF_HBIN *hbin; /* pointer to HBIN record (in memory) containing this nk record */
138 uint32 hbin_off; /* offset from beginning of this hbin block */
139 uint32 subkey_index; /* index to next subkey record to return */
140 uint32 rec_size; /* ((start_offset - end_offset) & 0xfffffff8) */
142 /* header information */
144 char header[REC_HDR_SIZE];
147 uint32 parent_off; /* back pointer in registry hive */
148 uint32 classname_off;
154 uint32 max_bytes_subkeyname; /* max subkey name * 2 */
155 uint32 max_bytes_subkeyclassname; /* max subkey classname length (as if) */
156 uint32 max_bytes_valuename; /* max valuename * 2 */
157 uint32 max_bytes_value; /* max value data size */
161 uint32 unk_index; /* nigel says run time index ? */
166 uint32 subkeys_off; /* hash records that point to NK records */
168 uint32 values_off; /* value lists which point to VK records */
169 uint32 sk_off; /* offset to SK record */
171 /* link in the other records here */
175 REGF_SK_REC *sec_desc;
182 /* run time information */
184 int fd; /* file descriptor */
185 int open_flags; /* flags passed to the open() call */
186 TALLOC_CTX *mem_ctx; /* memory context for run-time file access information */
187 REGF_HBIN *block_list; /* list of open hbin blocks */
189 /* file format information */
191 char header[REGF_HDR_SIZE]; /* "regf" */
192 uint32 data_offset; /* offset to record in the first (or any?) hbin block */
193 uint32 last_block; /* offset to last hbin block in file */
194 uint32 checksum; /* XOR of bytes 0x0000 - 0x01FB */
197 REGF_SK_REC *sec_desc_list; /* list of security descriptors referenced by NK records */
199 /* unknowns used to simply writing */
210 /* Function Declarations */
212 REGF_FILE* regfio_open( const char *filename, int flags, int mode );
213 int regfio_close( REGF_FILE *r );
215 REGF_NK_REC* regfio_rootkey( REGF_FILE *file );
216 REGF_NK_REC* regfio_fetch_subkey( REGF_FILE *file, REGF_NK_REC *nk );
217 REGF_NK_REC* regfio_write_key ( REGF_FILE *file, const char *name,
218 REGVAL_CTR *values, REGSUBKEY_CTR *subkeys,
219 SEC_DESC *sec_desc, REGF_NK_REC *parent );
222 #endif /* _REGFIO_H */