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path: root/source4/lib/registry/reg_backend_nt4.c
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Diffstat (limited to 'source4/lib/registry/reg_backend_nt4.c')
-rw-r--r--source4/lib/registry/reg_backend_nt4.c1124
1 files changed, 0 insertions, 1124 deletions
diff --git a/source4/lib/registry/reg_backend_nt4.c b/source4/lib/registry/reg_backend_nt4.c
deleted file mode 100644
index 74261c57a9..0000000000
--- a/source4/lib/registry/reg_backend_nt4.c
+++ /dev/null
@@ -1,1124 +0,0 @@
-/*
- Samba CIFS implementation
- Registry backend for REGF files
- Copyright (C) 2005 Jelmer Vernooij, jelmer@samba.org
- Copyright (C) 2006 Wilco Baan Hofman, wilco@baanhofman.nl
-
- 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 "lib/registry/registry.h"
-#include "system/filesys.h"
-#include "system/time.h"
-#include "lib/registry/tdr_regf.h"
-#include "librpc/gen_ndr/ndr_security.h"
-
-/* TODO:
- * - Return error codes that make more sense
- * - Locking
- */
-
-/*
- * Read HBIN blocks into memory
- */
-
-struct regf_data {
- int fd;
- struct hbin_block **hbins;
- struct regf_hdr *header;
-};
-
-static struct hbin_block *hbin_by_offset (const struct regf_data *data, uint32_t offset, uint32_t *rel_offset)
-{
- int i;
-
- for (i = 0; data->hbins[i]; i++) {
- if (offset >= data->hbins[i]->offset_from_first &&
- offset < data->hbins[i]->offset_from_first+
- data->hbins[i]->offset_to_next) {
- if (rel_offset)
- *rel_offset = offset - data->hbins[i]->offset_from_first - 0x20;
- return data->hbins[i];
- }
- }
-
- return NULL;
-}
-
-/*
- * Validate a regf header
- * For now, do nothing, but we should check the checksum
- */
-static uint32_t regf_hdr_checksum(const uint8_t *buffer)
-{
- uint32_t checksum = 0, x;
- int i;
-
- for (i = 0; i < 0x01FB; i+= 4) {
- x = IVAL(buffer, i);
- checksum ^= x;
- }
-
- return checksum;
-}
-
-static DATA_BLOB hbin_get(const struct regf_data *data, uint32_t offset)
-{
- DATA_BLOB ret;
- struct hbin_block *hbin;
- uint32_t rel_offset;
- ret.data = NULL;
- ret.length = 0;
-
- hbin = hbin_by_offset(data, offset, &rel_offset);
-
- if (hbin == NULL) {
- DEBUG(1, ("Can't find HBIN containing 0x%04x\n", offset));
- return ret;
- }
-
- ret.length = IVAL(hbin->data, rel_offset);
- if (!(ret.length & 0x80000000)) {
- DEBUG(0, ("Trying to use dirty block at 0x%04x\n", offset));
- return ret;
- }
-
- /* remove high bit */
- ret.length = (ret.length ^ 0xffffffff) + 1;
-
- ret.length -= 4; /* 4 bytes for the length... */
- ret.data = hbin->data +
- (offset - hbin->offset_from_first - 0x20) + 4;
-
- return ret;
-}
-
-static BOOL hbin_get_tdr (struct regf_data *regf, uint32_t offset, TALLOC_CTX *ctx, tdr_pull_fn_t pull_fn, void *p)
-{
- struct tdr_pull pull;
-
- ZERO_STRUCT(pull);
-
- pull.data = hbin_get(regf, offset);
- if (!pull.data.data) {
- DEBUG(1, ("Unable to get data at 0x%04x\n", offset));
- return False;
- }
-
- if (NT_STATUS_IS_ERR(pull_fn(&pull, ctx, p))) {
- DEBUG(1, ("Error parsing record at 0x%04x using tdr\n", offset));
- return False;
- }
-
- return True;
-}
-
-/* Allocate some new data */
-static DATA_BLOB hbin_alloc (struct regf_data *data, uint32_t size, uint32_t *offset)
-{
- DATA_BLOB ret;
- uint32_t rel_offset = -1; /* Relative offset ! */
- struct hbin_block *hbin = NULL;
- int i;
-
- *offset = 0;
-
- if (size == 0)
- return data_blob(NULL, 0);
-
- size += 4; /* Need to include uint32 for the length */
-
- /* Allocate as a multiple of 8 */
- size = (size + 7) & ~7;
-
- ret.data = NULL;
- ret.length = 0;
-
- for (i = 0; (hbin = data->hbins[i]); i++) {
- int j;
- uint32_t my_size;
- for (j = 0; j < hbin->offset_to_next-0x20; j+= my_size) {
- uint32_t header = IVAL(hbin->data, j + 4);
- my_size = IVAL(hbin->data, j);
-
- if (my_size == 0x0) {
- DEBUG(0, ("Invalid zero-length block! File is corrupt.\n"));
- return ret;
- }
-
- if (my_size % 8 != 0) {
- DEBUG(0, ("Encountered non-aligned block!\n"));
- }
-
- if (my_size & 0x80000000) { /* Used... */
- my_size = (my_size ^ 0xffffffff) + 1;
- } else if (my_size == size) { /* exact match */
- rel_offset = j;
- DEBUG(4, ("Found free block of exact size %d in middle of HBIN\n", size));
- break;
- } else if (my_size > size) { /* data will remain */
- rel_offset = j;
- SIVAL(hbin->data, rel_offset+size, my_size-size);
- DEBUG(4, ("Found free block of size %d (needing %d) in middle of HBIN\n", my_size, size));
- break;
- }
-
- if (header == 0xffffffff &&
- hbin->offset_to_next-rel_offset >= size) {
- rel_offset = j;
-
- DEBUG(4, ("Found free block of size %d at end of HBIN\n", size));
- /* Mark new free block size */
- SIVAL(hbin->data, rel_offset+size,hbin->offset_to_next - rel_offset - size - 0x20);
- SIVAL(hbin->data, rel_offset+size+0x4, 0xffffffff);
- break;
- }
-
- if (header == 0xffffffff) {
- break;
- }
- }
-
- if (rel_offset != -1)
- break;
- }
-
- /* No space available in previous hbins,
- * allocate new one */
- if (data->hbins[i] == NULL) {
- DEBUG(4, ("No space available in other HBINs for block of size %d, allocating new HBIN\n", size));
- data->hbins = talloc_realloc(data, data->hbins, struct hbin_block *, i+2);
- hbin = talloc(data->hbins, struct hbin_block);
- data->hbins[i] = hbin;
- data->hbins[i+1] = NULL;
-
- hbin->HBIN_ID = talloc_strdup(hbin, "hbin");
- hbin->offset_from_first = (i == 0?0:data->hbins[i-1]->offset_from_first+data->hbins[i-1]->offset_to_next);
- hbin->offset_to_next = 0x1000;
- hbin->unknown[0] = 0;
- hbin->unknown[0] = 0;
- unix_to_nt_time(&hbin->last_change, time(NULL));
- hbin->block_size = hbin->offset_to_next;
- hbin->data = talloc_zero_array(hbin, uint8_t, hbin->block_size - 0x20);
-
- rel_offset = 0x0;
- SIVAL(hbin->data, size, hbin->block_size - size - 0x20);
- SIVAL(hbin->data, size + 0x4, 0xffffffff);
- }
-
- /* Set size and mark as used */
- SIVAL(hbin->data, rel_offset, size | 0x80000000);
-
- ret.data = hbin->data + rel_offset + 0x4; /* Skip past length */
- ret.length = size - 0x4;
- if (offset) {
- uint32_t new_rel_offset;
- *offset = hbin->offset_from_first + rel_offset + 0x20;
- SMB_ASSERT(hbin_by_offset(data, *offset, &new_rel_offset) == hbin);
- SMB_ASSERT(new_rel_offset == rel_offset);
- }
-
- return ret;
-}
-
-/* Store a data blob. Return the offset at which it was stored */
-static uint32_t hbin_store (struct regf_data *data, DATA_BLOB blob)
-{
- uint32_t ret;
- DATA_BLOB dest = hbin_alloc(data, blob.length, &ret);
-
- memcpy(dest.data, blob.data, blob.length);
-
- return ret;
-}
-
-static uint32_t hbin_store_tdr (struct regf_data *data, tdr_push_fn_t push_fn, void *p)
-{
- struct tdr_push *push = talloc_zero(data, struct tdr_push);
- uint32_t ret;
-
- if (NT_STATUS_IS_ERR(push_fn(push, p))) {
- DEBUG(0, ("Error during push\n"));
- return -1;
- }
-
- ret = hbin_store(data, push->data);
-
- talloc_free(push);
-
- return ret;
-}
-
-
-/* Free existing data */
-static void hbin_free (struct regf_data *data, uint32_t offset)
-{
- uint32_t size;
- uint32_t rel_offset;
- struct hbin_block *hbin;
-
- SMB_ASSERT (offset > 0);
-
- hbin = hbin_by_offset(data, offset, &rel_offset);
-
- if (hbin == NULL)
- return;
-
- /* Get original size */
- size = IVAL(hbin->data, rel_offset);
-
- if (!(size & 0x80000000)) {
- DEBUG(1, ("Trying to free already freed block at 0x%04x\n", offset));
- return;
- }
-
- /* Mark block as free */
- SIVAL(hbin->data, rel_offset, size &~ 0x80000000);
-}
-
-/* Store a data blob data was already stored, but hsa changed in size
- * Will try to save it at the current location if possible, otherwise
- * does a free + store */
-static uint32_t hbin_store_resize (struct regf_data *data, uint32_t orig_offset, DATA_BLOB blob)
-{
- uint32_t rel_offset;
- struct hbin_block *hbin = hbin_by_offset(data, orig_offset, &rel_offset);
- uint32_t my_size;
- uint32_t orig_size;
- uint32_t needed_size;
- uint32_t possible_size;
- int i;
-
- SMB_ASSERT(orig_offset > 0);
-
- if (!hbin)
- return hbin_store(data, blob);
-
- /* Get original size */
- orig_size = IVAL(hbin->data, rel_offset);
-
- needed_size = blob.length + 4; /* Add uint32 containing length */
- needed_size = (needed_size + 7) & ~7; /* Align */
-
- /* Fits into current allocated block */
- if (orig_size >= needed_size) {
- memcpy(hbin->data + rel_offset + 0x4, blob.data, blob.length);
- return orig_offset;
- }
-
- possible_size = orig_size;
-
- /* Check if it can be combined with the next few free records */
- for (i = rel_offset;
- i < hbin->offset_to_next - 0x20;
- i += my_size) {
- uint32_t header;
- if (IVAL(hbin->data, i) & 0x80000000) /* Used */
- break;
-
- my_size = IVAL(hbin->data, i);
- header = IVAL(hbin->data, i + 4);
- if (header == 0xffffffff) {
- possible_size = hbin->offset_to_next - 0x20 - rel_offset;
- } else if (my_size == 0x0) {
- DEBUG(0, ("Invalid zero-length block! File is corrupt.\n"));
- break;
- } else {
- possible_size += my_size;
- }
-
- if (possible_size >= blob.length) {
- SIVAL(hbin->data, rel_offset, possible_size);
- memcpy(hbin->data + rel_offset + 0x4, blob.data, blob.length);
- return orig_offset;
- }
-
- if (header == 0xffffffff)
- break;
- }
-
- hbin_free(data, orig_offset);
- return hbin_store(data, blob);
-}
-
-static uint32_t hbin_store_tdr_resize (struct regf_data *regf, tdr_push_fn_t push_fn, uint32_t orig_offset, void *p)
-{
- struct tdr_push *push = talloc_zero(regf, struct tdr_push);
- uint32_t ret;
-
- if (NT_STATUS_IS_ERR(push_fn(push, p))) {
- DEBUG(0, ("Error during push\n"));
- return -1;
- }
-
- ret = hbin_store_resize(regf, orig_offset, push->data);
-
- talloc_free(push);
-
- return ret;
-}
-
-static WERROR regf_num_subkeys (const struct registry_key *key, uint32_t *count)
-{
- struct nk_block *nk = key->backend_data;
-
- *count = nk->num_subkeys;
-
- return WERR_OK;
-}
-
-static WERROR regf_num_values (const struct registry_key *key, uint32_t *count)
-{
- struct nk_block *nk = key->backend_data;
-
- *count = nk->num_values;
-
- return WERR_OK;
-}
-
-static struct registry_key *regf_get_key (TALLOC_CTX *ctx, struct regf_data *regf, uint32_t offset)
-{
- struct registry_key *ret;
- struct nk_block *nk;
-
- ret = talloc_zero(ctx, struct registry_key);
- nk = talloc(ret, struct nk_block);
- if (!hbin_get_tdr(regf, offset, nk, (tdr_pull_fn_t)tdr_pull_nk_block, nk)) {
- DEBUG(0, ("Unable to find HBIN data for offset %d\n", offset));
- return NULL;
- }
-
- if (strcmp(nk->header, "nk") != 0) {
- DEBUG(0, ("Expected nk record, got %s\n", nk->header));
- talloc_free(ret);
- return NULL;
- }
-
- ret->name = talloc_steal(ret, nk->key_name);
- ret->last_mod = nk->last_change;
-
- if (nk->clsname_offset != -1) {
- DATA_BLOB data = hbin_get(regf, nk->clsname_offset);
- ret->class_name = talloc_strndup(ret, (char*)data.data, nk->clsname_length);
- }
- ret->backend_data = nk;
-
- return ret;
-}
-
-static WERROR regf_get_value (TALLOC_CTX *ctx, const struct registry_key *key, int idx, struct registry_value **ret)
-{
- struct nk_block *nk = key->backend_data;
- struct vk_block *vk;
- struct regf_data *regf = key->hive->backend_data;
- uint32_t vk_offset;
- DATA_BLOB data;
-
- if (idx >= nk->num_values)
- return WERR_NO_MORE_ITEMS;
-
- data = hbin_get(regf, nk->values_offset);
- if (!data.data) {
- DEBUG(0, ("Unable to find value list\n"));
- return WERR_GENERAL_FAILURE;
- }
-
- if (data.length < nk->num_values * 4) {
- DEBUG(1, ("Value counts mismatch\n"));
- }
-
- vk_offset = IVAL(data.data, idx * 4);
-
- *ret = talloc_zero(ctx, struct registry_value);
- if (!(*ret))
- return WERR_NOMEM;
-
- vk = talloc(*ret, struct vk_block);
- if (!vk)
- return WERR_NOMEM;
-
- if (!hbin_get_tdr(regf, vk_offset, vk, (tdr_pull_fn_t)tdr_pull_vk_block, vk)) {
- DEBUG(0, ("Unable to get VK block at %d\n", vk_offset));
- return WERR_GENERAL_FAILURE;
- }
-
- (*ret)->name = talloc_steal(*ret, vk->data_name);
- (*ret)->data_type = vk->data_type;
- if (vk->data_length & 0x80000000) {
- vk->data_length &=~0x80000000;
- (*ret)->data.data = (uint8_t *)&vk->data_offset;
- (*ret)->data.length = vk->data_length;
- } else {
- (*ret)->data = hbin_get(regf, vk->data_offset);
- }
-
- if ((*ret)->data.length < vk->data_length) {
- DEBUG(1, ("Read data less than indicated data length!\n"));
- }
-
- return WERR_OK;
-}
-
-static WERROR regf_get_subkey_by_index (TALLOC_CTX *ctx, const struct registry_key *key, int idx, struct registry_key **ret)
-{
- DATA_BLOB data;
- struct nk_block *nk = key->backend_data;
- uint32_t key_off=0;
-
- if (idx >= nk->num_subkeys)
- return WERR_NO_MORE_ITEMS;
-
- data = hbin_get(key->hive->backend_data, nk->subkeys_offset);
- if (!data.data) {
- DEBUG(0, ("Unable to find subkey list\n"));
- return WERR_GENERAL_FAILURE;
- }
-
- if (!strncmp((char *)data.data, "li", 2)) {
- struct li_block li;
- struct tdr_pull pull;
-
- DEBUG(10, ("Subkeys in LI list\n"));
- ZERO_STRUCT(pull);
- pull.data = data;
-
- if (NT_STATUS_IS_ERR(tdr_pull_li_block(&pull, nk, &li))) {
- DEBUG(0, ("Error parsing LI list\n"));
- return WERR_GENERAL_FAILURE;
- }
- SMB_ASSERT(!strncmp(li.header, "li",2));
-
- if (li.key_count != nk->num_subkeys) {
- DEBUG(0, ("Subkey counts don't match\n"));
- return WERR_GENERAL_FAILURE;
- }
- key_off = li.nk_offset[idx];
-
- } else if (!strncmp((char *)data.data, "lf", 2)) {
- struct lf_block lf;
- struct tdr_pull pull;
-
- DEBUG(10, ("Subkeys in LF list\n"));
- ZERO_STRUCT(pull);
- pull.data = data;
-
- if (NT_STATUS_IS_ERR(tdr_pull_lf_block(&pull, nk, &lf))) {
- DEBUG(0, ("Error parsing LF list\n"));
- return WERR_GENERAL_FAILURE;
- }
- SMB_ASSERT(!strncmp(lf.header, "lf",2));
-
- if (lf.key_count != nk->num_subkeys) {
- DEBUG(0, ("Subkey counts don't match\n"));
- return WERR_GENERAL_FAILURE;
- }
-
- key_off = lf.hr[idx].nk_offset;
- } else if (!strncmp((char *)data.data, "lh", 2)) {
- struct lh_block lh;
- struct tdr_pull pull;
-
- DEBUG(10, ("Subkeys in LH list"));
- ZERO_STRUCT(pull);
- pull.data = data;
-
- if (NT_STATUS_IS_ERR(tdr_pull_lh_block(&pull, nk, &lh))) {
- DEBUG(0, ("Error parsing LH list\n"));
- return WERR_GENERAL_FAILURE;
- }
- SMB_ASSERT(!strncmp(lh.header, "lh",2));
-
- if (lh.key_count != nk->num_subkeys) {
- DEBUG(0, ("Subkey counts don't match\n"));
- return WERR_GENERAL_FAILURE;
- }
- key_off = lh.hr[idx].nk_offset;
- } else if (!strncmp((char *)data.data, "ri", 2)) {
- struct ri_block ri;
- struct tdr_pull pull;
- uint16_t i;
- uint16_t sublist_count = 0;
-
- ZERO_STRUCT(pull);
- pull.data = data;
-
- if (NT_STATUS_IS_ERR(tdr_pull_ri_block(&pull, nk, &ri))) {
- DEBUG(0, ("Error parsing RI list\n"));
- return WERR_GENERAL_FAILURE;
- }
- SMB_ASSERT(!strncmp(ri.header, "ri",2));
-
- for (i = 0; i < ri.key_count; i++) {
- DATA_BLOB list_data;
-
- /* Get sublist data blob */
- list_data = hbin_get(key->hive->backend_data, ri.offset[i]);
- if (!list_data.data) {
- DEBUG(0, ("Error getting RI list."));
- return WERR_GENERAL_FAILURE;
- }
-
- ZERO_STRUCT(pull);
- pull.data = list_data;
-
- if (!strncmp((char *)list_data.data, "li", 2)) {
- struct li_block li;
-
- if (NT_STATUS_IS_ERR(tdr_pull_li_block(&pull, nk, &li))) {
- DEBUG(0, ("Error parsing LI list from RI\n"));
- return WERR_GENERAL_FAILURE;
- }
- SMB_ASSERT(!strncmp(li.header, "li",2));
-
- /* Advance to next sublist if necessary */
- if (idx >= sublist_count + li.key_count) {
- sublist_count += li.key_count;
- continue;
- }
- key_off = li.nk_offset[idx - sublist_count];
- sublist_count += li.key_count;
- break;
- } else if (!strncmp((char *)list_data.data, "lh", 2)) {
- struct lh_block lh;
-
- if (NT_STATUS_IS_ERR(tdr_pull_lh_block(&pull, nk, &lh))) {
- DEBUG(0, ("Error parsing LH list from RI\n"));
- return WERR_GENERAL_FAILURE;
- }
- SMB_ASSERT(!strncmp(lh.header, "lh",2));
-
-
- /* Advance to next sublist if necessary */
- if (idx >= sublist_count + lh.key_count) {
- sublist_count += lh.key_count;
- continue;
- }
- key_off = lh.hr[idx - sublist_count].nk_offset;
- sublist_count += lh.key_count;
- break;
- } else {
- DEBUG(0,("Unknown sublist in ri block\n"));
- SMB_ASSERT(0);
- }
-
- }
-
- if (idx > sublist_count) {
- return WERR_NO_MORE_ITEMS;
- }
-
- } else {
- DEBUG(0, ("Unknown type for subkey list (0x%04x): %c%c\n", nk->subkeys_offset, data.data[0], data.data[1]));
- return WERR_GENERAL_FAILURE;
- }
-
- *ret = regf_get_key (ctx, key->hive->backend_data, key_off);
-
- return WERR_OK;
-}
-
-static WERROR regf_match_subkey_by_name (TALLOC_CTX *ctx, const struct registry_key *key, uint32_t offset, const char *name, uint32_t *ret)
-{
- DATA_BLOB subkey_data;
- struct nk_block subkey;
- struct tdr_pull pull;
-
- subkey_data = hbin_get(key->hive->backend_data, offset);
- if (!subkey_data.data) {
- DEBUG(0, ("Unable to retrieve subkey HBIN\n"));
- return WERR_GENERAL_FAILURE;
- }
-
- ZERO_STRUCT(pull);
- pull.data = subkey_data;
-
- if (NT_STATUS_IS_ERR(tdr_pull_nk_block(&pull, ctx, &subkey))) {
- DEBUG(0, ("Error parsing NK structure.\n"));
- return WERR_GENERAL_FAILURE;
- }
- if (strncmp(subkey.header, "nk", 2)) {
- DEBUG(0, ("Not an NK structure.\n"));
- return WERR_GENERAL_FAILURE;
- }
- if (!strcasecmp(subkey.key_name, name)) {
- *ret = offset;
- } else {
- *ret = 0;
- }
- return WERR_OK;
-}
-
-static WERROR regf_get_subkey_by_name (TALLOC_CTX *ctx, const struct registry_key *key, const char *name, struct registry_key **ret)
-{
- DATA_BLOB data;
- struct nk_block *nk = key->backend_data;
- uint32_t key_off = 0;
-
- data = hbin_get(key->hive->backend_data, nk->subkeys_offset);
- if (!data.data) {
- DEBUG(0, ("Unable to find subkey list\n"));
- return WERR_GENERAL_FAILURE;
- }
-
- if (!strncmp((char *)data.data, "li",2)) {
- struct li_block li;
- struct tdr_pull pull;
- uint16_t i;
-
- DEBUG(10, ("Subkeys in LI list\n"));
- ZERO_STRUCT(pull);
- pull.data = data;
-
- if (NT_STATUS_IS_ERR(tdr_pull_li_block(&pull, nk, &li))) {
- DEBUG(0, ("Error parsing LI list\n"));
- return WERR_GENERAL_FAILURE;
- }
- SMB_ASSERT(!strncmp(li.header, "li",2));
-
- if (li.key_count != nk->num_subkeys) {
- DEBUG(0, ("Subkey counts don't match\n"));
- return WERR_GENERAL_FAILURE;
- }
-
- for (i = 0; i < li.key_count; i++) {
- W_ERROR_NOT_OK_RETURN(regf_match_subkey_by_name(nk, key, li.nk_offset[i], name, &key_off));
- if (key_off) {
- break;
- }
- }
- if (!key_off) {
- return WERR_DEST_NOT_FOUND;
- }
- } else if (!strncmp((char *)data.data, "lf",2)) {
- struct lf_block lf;
- struct tdr_pull pull;
- uint16_t i;
-
- DEBUG(10, ("Subkeys in LF list\n"));
- ZERO_STRUCT(pull);
- pull.data = data;
-
- if (NT_STATUS_IS_ERR(tdr_pull_lf_block(&pull, nk, &lf))) {
- DEBUG(0, ("Error parsing LF list\n"));
- return WERR_GENERAL_FAILURE;
- }
- SMB_ASSERT(!strncmp(lf.header, "lf",2));
-
- if (lf.key_count != nk->num_subkeys) {
- DEBUG(0, ("Subkey counts don't match\n"));
- return WERR_GENERAL_FAILURE;
- }
-
- for (i = 0; i < lf.key_count; i++) {
- if (strncmp(lf.hr[i].hash, name, 4)) {
- continue;
- }
- W_ERROR_NOT_OK_RETURN(regf_match_subkey_by_name(nk, key, lf.hr[i].nk_offset, name, &key_off));
- if (key_off) {
- break;
- }
- }
- if (!key_off) {
- return WERR_DEST_NOT_FOUND;
- }
- } else if (!strncmp((char *)data.data, "lh",2)) {
- struct lh_block lh;
- struct tdr_pull pull;
- uint16_t i;
- uint32_t hash = 0;
- char *hash_name;
-
- DEBUG(10, ("Subkeys in LH list\n"));
- ZERO_STRUCT(pull);
- pull.data = data;
-
- if (NT_STATUS_IS_ERR(tdr_pull_lh_block(&pull, nk, &lh))) {
- DEBUG(0, ("Error parsing LH list\n"));
- return WERR_GENERAL_FAILURE;
- }
- SMB_ASSERT(!strncmp(lh.header, "lh",2));
-
- if (lh.key_count != nk->num_subkeys) {
- DEBUG(0, ("Subkey counts don't match\n"));
- return WERR_GENERAL_FAILURE;
- }
-
- /* Compute hash for the name */
- hash_name = strupper_talloc(nk, name);
- for (i = 0; *(hash_name + i) != 0; i++) {
- hash *= 37;
- hash += *(hash_name + i);
- }
- for (i = 0; i < lh.key_count; i++) {
- if (lh.hr[i].base37 != hash) {
- continue;
- }
- W_ERROR_NOT_OK_RETURN(regf_match_subkey_by_name(nk, key, lh.hr[i].nk_offset, name, &key_off));
- if (key_off) {
- break;
- }
- }
- if (!key_off) {
- return WERR_DEST_NOT_FOUND;
- }
- } else if (!strncmp((char *)data.data, "ri", 2)) {
- struct ri_block ri;
- struct tdr_pull pull;
- uint16_t i, j;
-
- DEBUG(10, ("Subkeys in RI list\n"));
- ZERO_STRUCT(pull);
- pull.data = data;
-
- if (NT_STATUS_IS_ERR(tdr_pull_ri_block(&pull, nk, &ri))) {
- DEBUG(0, ("Error parsing RI list\n"));
- return WERR_GENERAL_FAILURE;
- }
- SMB_ASSERT(!strncmp(ri.header, "ri",2));
-
-
- for (i = 0; i < ri.key_count; i++) {
- DATA_BLOB list_data;
-
- /* Get sublist data blob */
- list_data = hbin_get(key->hive->backend_data, ri.offset[i]);
- if (!list_data.data) {
- DEBUG(0, ("Error getting RI list."));
- return WERR_GENERAL_FAILURE;
- }
-
- ZERO_STRUCT(pull);
- pull.data = list_data;
-
- if (!strncmp((char *)list_data.data, "li", 2)) {
- struct li_block li;
-
- if (NT_STATUS_IS_ERR(tdr_pull_li_block(&pull, nk, &li))) {
- DEBUG(0, ("Error parsing LI list from RI\n"));
- return WERR_GENERAL_FAILURE;
- }
- SMB_ASSERT(!strncmp(li.header, "li",2));
-
- for (j = 0; j < li.key_count; j++) {
- W_ERROR_NOT_OK_RETURN(regf_match_subkey_by_name(nk, key,
- li.nk_offset[j], name, &key_off));
- if (key_off) {
- break;
- }
- }
- } else if (!strncmp((char *)list_data.data, "lh", 2)) {
- struct lh_block lh;
- uint32_t hash = 0;
- char *hash_name;
-
- if (NT_STATUS_IS_ERR(tdr_pull_lh_block(&pull, nk, &lh))) {
- DEBUG(0, ("Error parsing LH list from RI\n"));
- return WERR_GENERAL_FAILURE;
- }
- SMB_ASSERT(!strncmp(lh.header, "lh",2));
-
- /* Compute hash for the name */
- hash_name = strupper_talloc(nk, name);
- for (j = 0; *(hash_name + j) != 0; j++) {
- hash *= 37;
- hash += *(hash_name + j);
- }
- for (j = 0; j < lh.key_count; j++) {
- if (lh.hr[j].base37 != hash) {
- continue;
- }
- W_ERROR_NOT_OK_RETURN(regf_match_subkey_by_name(nk, key,
- lh.hr[j].nk_offset, name, &key_off));
- if (key_off) {
- break;
- }
- }
- }
- if (key_off) {
- break;
- }
-
- }
- if (!key_off) {
- return WERR_DEST_NOT_FOUND;
- }
- } else {
- DEBUG(0, ("Unknown subkey list type.\n"));
- return WERR_GENERAL_FAILURE;
- }
-
- *ret = regf_get_key (ctx, key->hive->backend_data, key_off);
- return WERR_OK;
-}
-
-static WERROR regf_set_sec_desc (const struct registry_key *key, const struct security_descriptor *sec_desc)
-{
- /* FIXME */
- return WERR_NOT_SUPPORTED;
-}
-
-static WERROR regf_get_sec_desc(TALLOC_CTX *ctx, const struct registry_key *key, struct security_descriptor **sd)
-{
- struct nk_block *nk = key->backend_data;
- struct sk_block sk;
- struct regf_data *regf = key->hive->backend_data;
- DATA_BLOB data;
-
- if (!hbin_get_tdr(regf, nk->sk_offset, ctx, (tdr_pull_fn_t) tdr_pull_sk_block, &sk)) {
- DEBUG(0, ("Unable to find security descriptor\n"));
- return WERR_GENERAL_FAILURE;
- }
-
- if (strcmp(sk.header, "sk") != 0) {
- DEBUG(0, ("Expected 'sk', got '%s'\n", sk.header));
- return WERR_GENERAL_FAILURE;
- }
-
- *sd = talloc(ctx, struct security_descriptor);
- if (!*sd)
- return WERR_NOMEM;
-
- data.data = sk.sec_desc;
- data.length = sk.rec_size;
- if (NT_STATUS_IS_ERR(ndr_pull_struct_blob(&data, ctx, *sd, (ndr_pull_flags_fn_t)ndr_pull_security_descriptor))) {
- DEBUG(0, ("Error parsing security descriptor\n"));
- return WERR_GENERAL_FAILURE;
- }
-
- return WERR_OK;
-}
-
-static uint32_t lf_add_entry (struct regf_data *regf, uint32_t list_offset, const char *name, uint32_t key_offset)
-{
- uint32_t ret;
- struct lf_block lf;
-
- ZERO_STRUCT(lf);
-
- /* Add to subkeys list */
- if (list_offset == -1) { /* Need to create subkeys list */
- lf.header = "lf";
- } else {
- if (!hbin_get_tdr(regf, list_offset, regf, (tdr_pull_fn_t)tdr_pull_lf_block, &lf)) {
- DEBUG(0, ("Can't get subkeys list\n"));
- return -1;
- }
- }
-
- lf.hr = talloc_realloc(regf, lf.hr, struct hash_record, lf.key_count+1);
- lf.hr[lf.key_count].nk_offset = key_offset;
- lf.hr[lf.key_count].hash = talloc_strndup(regf, name, 4);
- lf.key_count++;
-
- ret = hbin_store_tdr_resize(regf, (tdr_push_fn_t)tdr_push_lf_block, list_offset, &lf);
-
- talloc_free(lf.hr);
-
- return ret;
-}
-
-static WERROR regf_del_value (const struct registry_key *parent, const char *name)
-{
- /* FIXME */
- return WERR_NOT_SUPPORTED;
-}
-
-
-static WERROR regf_del_key (const struct registry_key *parent, const char *name)
-{
- struct nk_block *nk = parent->backend_data;
-
- SMB_ASSERT(nk);
-
- if (nk->subkeys_offset == -1)
- return WERR_BADFILE;
-
- /* FIXME */
-
- return WERR_NOT_SUPPORTED;
-}
-
-static WERROR regf_add_key (TALLOC_CTX *ctx, const struct registry_key *parent, const char *name, uint32_t access_mask, struct security_descriptor *sec_desc, struct registry_key **ret)
-{
- struct nk_block *parent_nk = parent->backend_data, nk;
- struct regf_data *regf = parent->hive->backend_data;
- uint32_t offset;
-
- nk.header = "nk";
- nk.type = REG_SUB_KEY;
- unix_to_nt_time(&nk.last_change, time(NULL));
- nk.uk1 = 0;
- nk.parent_offset = 0; /* FIXME */
- nk.num_subkeys = 0;
- nk.uk2 = 0;
- nk.subkeys_offset = -1;
- nk.unknown_offset = -1;
- nk.num_values = 0;
- nk.sk_offset = 0;
- memset(nk.unk3, 0, 5);
- nk.clsname_offset = -1;
- nk.clsname_length = 0;
- nk.key_name = name;
-
- offset = hbin_store_tdr(regf, (tdr_push_fn_t) tdr_push_nk_block, &nk);
-
- parent_nk->subkeys_offset = lf_add_entry(regf, parent_nk->subkeys_offset, name, nk.parent_offset);
-
- parent_nk->num_subkeys++;
-
- hbin_store_tdr_resize(regf, (tdr_push_fn_t) tdr_push_nk_block, nk.parent_offset, parent_nk);
-
- *ret = regf_get_key(ctx, regf, offset);
-
- /* FIXME: Set sec desc ! */
- return WERR_OK;
-}
-
-static WERROR regf_set_value (const struct registry_key *key, const char *name, uint32_t type, const DATA_BLOB data)
-{
- /* FIXME */
-
- return WERR_NOT_SUPPORTED;
-}
-
-#if 0 /* Unused */
-
-static WERROR regf_save_hbin(struct registry_hive *hive, struct hbin_block *hbin)
-{
- struct regf_data *regf = hive->backend_data;
-
- /* go to right offset */
- if (lseek(regf->fd, SEEK_SET, regf->header->data_offset + hbin->offset_from_first) == -1) {
- DEBUG(0, ("Error lseeking in regf file\n"));
- return WERR_GENERAL_FAILURE;
- }
-
- if (NT_STATUS_IS_ERR(tdr_push_to_fd(regf->fd, (tdr_push_fn_t)tdr_push_hbin_block, hbin))) {
- DEBUG(0, ("Error writing HBIN block\n"));
- return WERR_GENERAL_FAILURE;
- }
-
- return WERR_OK;
-}
-
-#endif
-
-static WERROR nt_open_hive (struct registry_hive *h, struct registry_key **key)
-{
- struct regf_data *regf;
- struct regf_hdr *regf_hdr;
- struct tdr_pull pull;
- int i;
-
- regf = (struct regf_data *)talloc_zero(h, struct regf_data);
- h->backend_data = regf;
-
- DEBUG(5, ("Attempting to load registry file\n"));
-
- /* Get the header */
- regf->fd = open(h->location, O_RDWR);
-
- if (regf->fd == -1) {
- DEBUG(0,("Could not load file: %s, %s\n", h->location,
- strerror(errno)));
- return WERR_GENERAL_FAILURE;
- }
-
- ZERO_STRUCT(pull);
- pull.data.data = (uint8_t*)fd_load(regf->fd, &pull.data.length, regf);
-
- if (pull.data.data == NULL) {
- DEBUG(0, ("Error reading data\n"));
- return WERR_GENERAL_FAILURE;
- }
-
- regf_hdr = talloc(regf, struct regf_hdr);
- if (NT_STATUS_IS_ERR(tdr_pull_regf_hdr(&pull, regf_hdr, regf_hdr))) {
- return WERR_GENERAL_FAILURE;
- }
-
- regf->header = regf_hdr;
-
- if (strcmp(regf_hdr->REGF_ID, "regf") != 0) {
- DEBUG(0, ("Unrecognized NT registry header id: %s, %s\n",
- regf_hdr->REGF_ID, h->location));
- }
-
- DEBUG(1, ("Registry '%s' read. Version %d.%d.%d.%d\n",
- regf_hdr->description, regf_hdr->version.major,
- regf_hdr->version.minor, regf_hdr->version.release,
- regf_hdr->version.build));
-
- /*
- * Validate the header ...
- */
- if (regf_hdr_checksum(pull.data.data) != regf_hdr->chksum) {
- DEBUG(0, ("Registry file checksum error: %s: %d,%d\n",
- h->location, regf_hdr->chksum, regf_hdr_checksum(pull.data.data)));
- return WERR_GENERAL_FAILURE;
- }
-
- pull.offset = 0x1000;
-
- i = 0;
- /* Read in all hbin blocks */
- regf->hbins = talloc_array(regf, struct hbin_block *, 1);
- regf->hbins[0] = NULL;
-
- while (pull.offset < pull.data.length && pull.offset < regf->header->last_block) {
- struct hbin_block *hbin = talloc(regf->hbins, struct hbin_block);
-
- if (NT_STATUS_IS_ERR(tdr_pull_hbin_block(&pull, hbin, hbin))) {
- DEBUG(0, ("[%d] Error parsing HBIN block\n", i));
- return WERR_FOOBAR;
- }
-
- if (strcmp(hbin->HBIN_ID, "hbin") != 0) {
- DEBUG(0, ("[%d] Expected 'hbin', got '%s'\n", i, hbin->HBIN_ID));
- return WERR_FOOBAR;
- }
-
- regf->hbins[i] = hbin;
- i++;
- regf->hbins = talloc_realloc(regf, regf->hbins, struct hbin_block *, i+2);
- regf->hbins[i] = NULL;
- }
-
- DEBUG(1, ("%d HBIN blocks read\n", i));
-
- *key = regf_get_key(h, regf, 0x20);
-
- return WERR_OK;
-}
-
-static struct hive_operations reg_backend_nt4 = {
- .name = "nt4",
- .open_hive = nt_open_hive,
- .num_subkeys = regf_num_subkeys,
- .num_values = regf_num_values,
- .get_subkey_by_index = regf_get_subkey_by_index,
- .get_subkey_by_name = regf_get_subkey_by_name,
- .get_value_by_index = regf_get_value,
- .key_get_sec_desc = regf_get_sec_desc,
- .key_set_sec_desc = regf_set_sec_desc,
- .add_key = regf_add_key,
- .set_value = regf_set_value,
- .del_key = regf_del_key,
- .del_value = regf_del_value,
-};
-
-NTSTATUS registry_nt4_init(void)
-{
- return registry_register(&reg_backend_nt4);
-}
generated by cgit (git 2.34.1) at 2024-07-28 05:03:52 +0000