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-rw-r--r--source3/registry/reg_api.c1063
1 files changed, 1063 insertions, 0 deletions
diff --git a/source3/registry/reg_api.c b/source3/registry/reg_api.c
new file mode 100644
index 0000000..60caa5a
--- /dev/null
+++ b/source3/registry/reg_api.c
@@ -0,0 +1,1063 @@
+/*
+ * Unix SMB/CIFS implementation.
+ * Virtual Windows Registry Layer
+ * Copyright (C) Volker Lendecke 2006
+ * Copyright (C) Michael Adam 2007-2010
+ *
+ * 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/>.
+ */
+
+/* Attempt to wrap the existing API in a more winreg.idl-like way */
+
+/*
+ * Here is a list of winreg.idl functions and corresponding implementations
+ * provided here:
+ *
+ * 0x00 winreg_OpenHKCR
+ * 0x01 winreg_OpenHKCU
+ * 0x02 winreg_OpenHKLM
+ * 0x03 winreg_OpenHKPD
+ * 0x04 winreg_OpenHKU
+ * 0x05 winreg_CloseKey
+ * 0x06 winreg_CreateKey reg_createkey
+ * 0x07 winreg_DeleteKey reg_deletekey
+ * 0x08 winreg_DeleteValue reg_deletevalue
+ * 0x09 winreg_EnumKey reg_enumkey
+ * 0x0a winreg_EnumValue reg_enumvalue
+ * 0x0b winreg_FlushKey
+ * 0x0c winreg_GetKeySecurity reg_getkeysecurity
+ * 0x0d winreg_LoadKey
+ * 0x0e winreg_NotifyChangeKeyValue
+ * 0x0f winreg_OpenKey reg_openkey
+ * 0x10 winreg_QueryInfoKey reg_queryinfokey
+ * 0x11 winreg_QueryValue reg_queryvalue
+ * 0x12 winreg_ReplaceKey
+ * 0x13 winreg_RestoreKey reg_restorekey
+ * 0x14 winreg_SaveKey reg_savekey
+ * 0x15 winreg_SetKeySecurity reg_setkeysecurity
+ * 0x16 winreg_SetValue reg_setvalue
+ * 0x17 winreg_UnLoadKey
+ * 0x18 winreg_InitiateSystemShutdown
+ * 0x19 winreg_AbortSystemShutdown
+ * 0x1a winreg_GetVersion reg_getversion
+ * 0x1b winreg_OpenHKCC
+ * 0x1c winreg_OpenHKDD
+ * 0x1d winreg_QueryMultipleValues reg_querymultiplevalues
+ * 0x1e winreg_InitiateSystemShutdownEx
+ * 0x1f winreg_SaveKeyEx
+ * 0x20 winreg_OpenHKPT
+ * 0x21 winreg_OpenHKPN
+ * 0x22 winreg_QueryMultipleValues2 reg_querymultiplevalues
+ *
+ */
+
+#include "includes.h"
+#include "registry.h"
+#include "reg_api.h"
+#include "reg_cachehook.h"
+#include "reg_backend_db.h"
+#include "reg_dispatcher.h"
+#include "reg_objects.h"
+#include "../librpc/gen_ndr/ndr_security.h"
+#include "reg_parse_internal.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_REGISTRY
+
+
+/**********************************************************************
+ * Helper functions
+ **********************************************************************/
+
+static WERROR fill_value_cache(struct registry_key *key)
+{
+ WERROR werr;
+
+ if (key->values != NULL) {
+ if (!reg_values_need_update(key->key, key->values)) {
+ return WERR_OK;
+ }
+ }
+
+ TALLOC_FREE(key->values);
+ werr = regval_ctr_init(key, &(key->values));
+ W_ERROR_NOT_OK_RETURN(werr);
+
+ if (fetch_reg_values(key->key, key->values) == -1) {
+ TALLOC_FREE(key->values);
+ return WERR_FILE_NOT_FOUND;
+ }
+
+ return WERR_OK;
+}
+
+static WERROR fill_subkey_cache(struct registry_key *key)
+{
+ WERROR werr;
+
+ if (key->subkeys != NULL) {
+ if (!reg_subkeys_need_update(key->key, key->subkeys)) {
+ return WERR_OK;
+ }
+ }
+
+ TALLOC_FREE(key->subkeys);
+ werr = regsubkey_ctr_init(key, &(key->subkeys));
+ W_ERROR_NOT_OK_RETURN(werr);
+
+ if (fetch_reg_keys(key->key, key->subkeys) == -1) {
+ TALLOC_FREE(key->subkeys);
+ return WERR_FILE_NOT_FOUND;
+ }
+
+ return WERR_OK;
+}
+
+static int regkey_destructor(struct registry_key_handle *key)
+{
+ return regdb_close();
+}
+
+static WERROR regkey_open_onelevel(TALLOC_CTX *mem_ctx,
+ struct registry_key *parent,
+ const char *name,
+ const struct security_token *token,
+ uint32_t access_desired,
+ struct registry_key **pregkey)
+{
+ WERROR result;
+ struct registry_key *regkey;
+ struct registry_key_handle *key;
+
+ DEBUG(7,("regkey_open_onelevel: name = [%s]\n", name));
+
+ SMB_ASSERT(strchr(name, '\\') == NULL);
+
+ if (!(regkey = talloc_zero(mem_ctx, struct registry_key)) ||
+ !(regkey->token = dup_nt_token(regkey, token)) ||
+ !(regkey->key = talloc_zero(regkey, struct registry_key_handle)))
+ {
+ result = WERR_NOT_ENOUGH_MEMORY;
+ goto done;
+ }
+
+ result = regdb_open();
+ if (!(W_ERROR_IS_OK(result))) {
+ goto done;
+ }
+
+ key = regkey->key;
+ talloc_set_destructor(key, regkey_destructor);
+
+ /* initialization */
+
+ key->type = REG_KEY_GENERIC;
+
+ if (name[0] == '\0') {
+ /*
+ * Open a copy of the parent key
+ */
+ if (!parent) {
+ result = WERR_FILE_NOT_FOUND;
+ goto done;
+ }
+ key->name = talloc_strdup(key, parent->key->name);
+ }
+ else {
+ /*
+ * Normal subkey open
+ */
+ key->name = talloc_asprintf(key, "%s%s%s",
+ parent ? parent->key->name : "",
+ parent ? "\\": "",
+ name);
+ }
+
+ if (key->name == NULL) {
+ result = WERR_NOT_ENOUGH_MEMORY;
+ goto done;
+ }
+
+ /* Tag this as a Performance Counter Key */
+
+ if( strncasecmp_m(key->name, KEY_HKPD, strlen(KEY_HKPD)) == 0 )
+ key->type = REG_KEY_HKPD;
+
+ /* Look up the table of registry I/O operations */
+
+ key->ops = reghook_cache_find( key->name );
+ if (key->ops == NULL) {
+ DEBUG(0,("reg_open_onelevel: Failed to assign "
+ "registry_ops to [%s]\n", key->name ));
+ result = WERR_FILE_NOT_FOUND;
+ goto done;
+ }
+
+ /* FIXME: Existence is currently checked by fetching the subkeys */
+
+ result = fill_subkey_cache(regkey);
+ if (!W_ERROR_IS_OK(result)) {
+ goto done;
+ }
+
+ if ( !regkey_access_check( key, access_desired, &key->access_granted,
+ token ) ) {
+ result = WERR_ACCESS_DENIED;
+ goto done;
+ }
+
+ *pregkey = regkey;
+ result = WERR_OK;
+
+done:
+ if ( !W_ERROR_IS_OK(result) ) {
+ TALLOC_FREE(regkey);
+ }
+
+ return result;
+}
+
+WERROR reg_openhive(TALLOC_CTX *mem_ctx, const char *hive,
+ uint32_t desired_access,
+ const struct security_token *token,
+ struct registry_key **pkey)
+{
+ const struct hive_info *hi;
+ SMB_ASSERT(hive != NULL);
+ SMB_ASSERT(strchr(hive, '\\') == NULL);
+
+ hi = hive_info(hive);
+ if (hi == NULL) {
+ return WERR_FILE_NOT_FOUND;
+ }
+
+ return regkey_open_onelevel(mem_ctx, NULL, hi->short_name, token,
+ desired_access, pkey);
+}
+
+
+/**********************************************************************
+ * The API functions
+ **********************************************************************/
+
+WERROR reg_openkey(TALLOC_CTX *mem_ctx, struct registry_key *parent,
+ const char *name, uint32_t desired_access,
+ struct registry_key **pkey)
+{
+ struct registry_key *direct_parent = parent;
+ WERROR err;
+ char *p, *path;
+ size_t len;
+ TALLOC_CTX *frame = talloc_stackframe();
+
+ path = talloc_strdup(frame, name);
+ if (path == NULL) {
+ err = WERR_NOT_ENOUGH_MEMORY;
+ goto error;
+ }
+
+ len = strlen(path);
+
+ if ((len > 0) && (path[len-1] == '\\')) {
+ path[len-1] = '\0';
+ }
+
+ while ((p = strchr(path, '\\')) != NULL) {
+ char *name_component;
+ struct registry_key *tmp;
+
+ name_component = talloc_strndup(frame, path, (p - path));
+ if (name_component == NULL) {
+ err = WERR_NOT_ENOUGH_MEMORY;
+ goto error;
+ }
+
+ err = regkey_open_onelevel(frame, direct_parent,
+ name_component, parent->token,
+ KEY_ENUMERATE_SUB_KEYS, &tmp);
+
+ if (!W_ERROR_IS_OK(err)) {
+ goto error;
+ }
+
+ direct_parent = tmp;
+ path = p+1;
+ }
+
+ err = regkey_open_onelevel(mem_ctx, direct_parent, path, parent->token,
+ desired_access, pkey);
+
+error:
+ talloc_free(frame);
+ return err;
+}
+
+WERROR reg_enumkey(TALLOC_CTX *mem_ctx, struct registry_key *key,
+ uint32_t idx, char **name, NTTIME *last_write_time)
+{
+ WERROR err;
+
+ if (!(key->key->access_granted & KEY_ENUMERATE_SUB_KEYS)) {
+ return WERR_ACCESS_DENIED;
+ }
+
+ err = fill_subkey_cache(key);
+ if (!W_ERROR_IS_OK(err)) {
+ return err;
+ }
+
+ if (idx >= regsubkey_ctr_numkeys(key->subkeys)) {
+ return WERR_NO_MORE_ITEMS;
+ }
+
+ if (!(*name = talloc_strdup(mem_ctx,
+ regsubkey_ctr_specific_key(key->subkeys, idx))))
+ {
+ return WERR_NOT_ENOUGH_MEMORY;
+ }
+
+ if (last_write_time) {
+ *last_write_time = 0;
+ }
+
+ return WERR_OK;
+}
+
+WERROR reg_enumvalue(TALLOC_CTX *mem_ctx, struct registry_key *key,
+ uint32_t idx, char **pname, struct registry_value **pval)
+{
+ struct registry_value *val;
+ struct regval_blob *blob;
+ WERROR err;
+
+ if (!(key->key->access_granted & KEY_QUERY_VALUE)) {
+ return WERR_ACCESS_DENIED;
+ }
+
+ err = fill_value_cache(key);
+ if (!(W_ERROR_IS_OK(err))) {
+ return err;
+ }
+
+ if (idx >= regval_ctr_numvals(key->values)) {
+ return WERR_NO_MORE_ITEMS;
+ }
+
+ blob = regval_ctr_specific_value(key->values, idx);
+
+ val = talloc_zero(mem_ctx, struct registry_value);
+ if (val == NULL) {
+ return WERR_NOT_ENOUGH_MEMORY;
+ }
+
+ val->type = regval_type(blob);
+ val->data = data_blob_talloc(mem_ctx, regval_data_p(blob), regval_size(blob));
+
+ if (pname
+ && !(*pname = talloc_strdup(
+ mem_ctx, regval_name(blob)))) {
+ TALLOC_FREE(val);
+ return WERR_NOT_ENOUGH_MEMORY;
+ }
+
+ *pval = val;
+ return WERR_OK;
+}
+
+static WERROR reg_enumvalue_nocachefill(TALLOC_CTX *mem_ctx,
+ struct registry_key *key,
+ uint32_t idx, char **pname,
+ struct registry_value **pval)
+{
+ struct registry_value *val;
+ struct regval_blob *blob;
+
+ if (!(key->key->access_granted & KEY_QUERY_VALUE)) {
+ return WERR_ACCESS_DENIED;
+ }
+
+ if (idx >= regval_ctr_numvals(key->values)) {
+ return WERR_NO_MORE_ITEMS;
+ }
+
+ blob = regval_ctr_specific_value(key->values, idx);
+
+ val = talloc_zero(mem_ctx, struct registry_value);
+ if (val == NULL) {
+ return WERR_NOT_ENOUGH_MEMORY;
+ }
+
+ val->type = regval_type(blob);
+ val->data = data_blob_talloc(mem_ctx, regval_data_p(blob), regval_size(blob));
+
+ if (pname
+ && !(*pname = talloc_strdup(
+ mem_ctx, regval_name(blob)))) {
+ TALLOC_FREE(val);
+ return WERR_NOT_ENOUGH_MEMORY;
+ }
+
+ *pval = val;
+ return WERR_OK;
+}
+
+WERROR reg_queryvalue(TALLOC_CTX *mem_ctx, struct registry_key *key,
+ const char *name, struct registry_value **pval)
+{
+ WERROR err;
+ uint32_t i;
+
+ if (!(key->key->access_granted & KEY_QUERY_VALUE)) {
+ return WERR_ACCESS_DENIED;
+ }
+
+ if (!(W_ERROR_IS_OK(err = fill_value_cache(key)))) {
+ return err;
+ }
+
+ for (i=0; i < regval_ctr_numvals(key->values); i++) {
+ struct regval_blob *blob;
+ blob = regval_ctr_specific_value(key->values, i);
+ if (strequal(regval_name(blob), name)) {
+ /*
+ * don't use reg_enumvalue here:
+ * re-reading the values from the disk
+ * would change the indexing and break
+ * this function.
+ */
+ return reg_enumvalue_nocachefill(mem_ctx, key, i,
+ NULL, pval);
+ }
+ }
+
+ return WERR_FILE_NOT_FOUND;
+}
+
+WERROR reg_querymultiplevalues(TALLOC_CTX *mem_ctx,
+ struct registry_key *key,
+ uint32_t num_names,
+ const char **names,
+ uint32_t *pnum_vals,
+ struct registry_value **pvals)
+{
+ WERROR err;
+ uint32_t i, n, found = 0;
+ struct registry_value *vals;
+
+ if (num_names == 0) {
+ return WERR_OK;
+ }
+
+ if (!(key->key->access_granted & KEY_QUERY_VALUE)) {
+ return WERR_ACCESS_DENIED;
+ }
+
+ if (!(W_ERROR_IS_OK(err = fill_value_cache(key)))) {
+ return err;
+ }
+
+ vals = talloc_zero_array(mem_ctx, struct registry_value, num_names);
+ if (vals == NULL) {
+ return WERR_NOT_ENOUGH_MEMORY;
+ }
+
+ for (n=0; n < num_names; n++) {
+ for (i=0; i < regval_ctr_numvals(key->values); i++) {
+ struct regval_blob *blob;
+ blob = regval_ctr_specific_value(key->values, i);
+ if (strequal(regval_name(blob), names[n])) {
+ struct registry_value *v;
+ err = reg_enumvalue(mem_ctx, key, i, NULL, &v);
+ if (!W_ERROR_IS_OK(err)) {
+ return err;
+ }
+ vals[n] = *v;
+ found++;
+ }
+ }
+ }
+
+ *pvals = vals;
+ *pnum_vals = found;
+
+ return WERR_OK;
+}
+
+WERROR reg_queryinfokey(struct registry_key *key, uint32_t *num_subkeys,
+ uint32_t *max_subkeylen, uint32_t *max_subkeysize,
+ uint32_t *num_values, uint32_t *max_valnamelen,
+ uint32_t *max_valbufsize, uint32_t *secdescsize,
+ NTTIME *last_changed_time)
+{
+ uint32_t i, max_size;
+ size_t max_len;
+ TALLOC_CTX *mem_ctx;
+ WERROR err;
+ struct security_descriptor *secdesc;
+
+ if (!(key->key->access_granted & KEY_QUERY_VALUE)) {
+ return WERR_ACCESS_DENIED;
+ }
+
+ if (!W_ERROR_IS_OK(fill_subkey_cache(key)) ||
+ !W_ERROR_IS_OK(fill_value_cache(key))) {
+ return WERR_FILE_NOT_FOUND;
+ }
+
+ max_len = 0;
+ for (i=0; i< regsubkey_ctr_numkeys(key->subkeys); i++) {
+ max_len = MAX(max_len,
+ strlen(regsubkey_ctr_specific_key(key->subkeys, i)));
+ }
+
+ *num_subkeys = regsubkey_ctr_numkeys(key->subkeys);
+ *max_subkeylen = max_len;
+ *max_subkeysize = 0; /* Class length? */
+
+ max_len = 0;
+ max_size = 0;
+ for (i=0; i < regval_ctr_numvals(key->values); i++) {
+ struct regval_blob *blob;
+ blob = regval_ctr_specific_value(key->values, i);
+ max_len = MAX(max_len, strlen(regval_name(blob)));
+ max_size = MAX(max_size, regval_size(blob));
+ }
+
+ *num_values = regval_ctr_numvals(key->values);
+ *max_valnamelen = max_len;
+ *max_valbufsize = max_size;
+
+ if (!(mem_ctx = talloc_new(key))) {
+ return WERR_NOT_ENOUGH_MEMORY;
+ }
+
+ err = regkey_get_secdesc(mem_ctx, key->key, &secdesc);
+ if (!W_ERROR_IS_OK(err)) {
+ TALLOC_FREE(mem_ctx);
+ return err;
+ }
+
+ *secdescsize = ndr_size_security_descriptor(secdesc, 0);
+ TALLOC_FREE(mem_ctx);
+
+ *last_changed_time = 0;
+
+ return WERR_OK;
+}
+
+WERROR reg_createkey(TALLOC_CTX *ctx, struct registry_key *parent,
+ const char *subkeypath, uint32_t desired_access,
+ struct registry_key **pkey,
+ enum winreg_CreateAction *paction)
+{
+ struct registry_key *key = parent;
+ TALLOC_CTX *mem_ctx;
+ char *path, *end;
+ WERROR err;
+ uint32_t access_granted;
+
+ mem_ctx = talloc_new(ctx);
+ if (mem_ctx == NULL) {
+ return WERR_NOT_ENOUGH_MEMORY;
+ }
+
+ path = talloc_strdup(mem_ctx, subkeypath);
+ if (path == NULL) {
+ err = WERR_NOT_ENOUGH_MEMORY;
+ goto done;
+ }
+
+ err = regdb_transaction_start();
+ if (!W_ERROR_IS_OK(err)) {
+ DEBUG(0, ("reg_createkey: failed to start transaction: %s\n",
+ win_errstr(err)));
+ goto done;
+ }
+
+ while ((end = strchr(path, '\\')) != NULL) {
+ struct registry_key *tmp;
+ enum winreg_CreateAction action;
+
+ *end = '\0';
+
+ err = reg_createkey(mem_ctx, key, path,
+ KEY_ENUMERATE_SUB_KEYS, &tmp, &action);
+ if (!W_ERROR_IS_OK(err)) {
+ goto trans_done;
+ }
+
+ if (key != parent) {
+ TALLOC_FREE(key);
+ }
+
+ key = tmp;
+ path = end+1;
+ }
+
+ /*
+ * At this point, "path" contains the one-element subkey of "key". We
+ * can try to open it.
+ */
+
+ err = reg_openkey(ctx, key, path, desired_access, pkey);
+ if (W_ERROR_IS_OK(err)) {
+ if (paction != NULL) {
+ *paction = REG_OPENED_EXISTING_KEY;
+ }
+ goto trans_done;
+ }
+
+ if (!W_ERROR_EQUAL(err, WERR_FILE_NOT_FOUND)) {
+ /*
+ * Something but "notfound" has happened, so bail out
+ */
+ goto trans_done;
+ }
+
+ /*
+ * We may (e.g. in the iteration) have opened the key with ENUM_SUBKEY.
+ * Instead of re-opening the key with CREATE_SUB_KEY, we simply
+ * duplicate the access check here and skip the expensive full open.
+ */
+ if (!regkey_access_check(key->key, KEY_CREATE_SUB_KEY, &access_granted,
+ key->token))
+ {
+ err = WERR_ACCESS_DENIED;
+ goto trans_done;
+ }
+
+ /*
+ * Actually create the subkey
+ */
+
+ err = create_reg_subkey(key->key, path);
+ if (!W_ERROR_IS_OK(err)) {
+ goto trans_done;
+ }
+
+ /*
+ * Now open the newly created key
+ */
+
+ err = reg_openkey(ctx, key, path, desired_access, pkey);
+ if (W_ERROR_IS_OK(err) && (paction != NULL)) {
+ *paction = REG_CREATED_NEW_KEY;
+ }
+
+trans_done:
+ if (W_ERROR_IS_OK(err)) {
+ err = regdb_transaction_commit();
+ if (!W_ERROR_IS_OK(err)) {
+ DEBUG(0, ("reg_createkey: Error committing transaction: %s\n", win_errstr(err)));
+ }
+ } else {
+ WERROR err1 = regdb_transaction_cancel();
+ if (!W_ERROR_IS_OK(err1)) {
+ DEBUG(0, ("reg_createkey: Error cancelling transaction: %s\n", win_errstr(err1)));
+ }
+ }
+
+ done:
+ TALLOC_FREE(mem_ctx);
+ return err;
+}
+
+static WERROR reg_deletekey_internal(TALLOC_CTX *mem_ctx,
+ struct registry_key *parent,
+ const char *path, bool lazy)
+{
+ WERROR err;
+ char *name, *end;
+ struct registry_key *key;
+ name = talloc_strdup(mem_ctx, path);
+ if (name == NULL) {
+ err = WERR_NOT_ENOUGH_MEMORY;
+ goto done;
+ }
+
+ /* no subkeys - proceed with delete */
+ end = strrchr(name, '\\');
+ if (end != NULL) {
+ *end = '\0';
+
+ err = reg_openkey(mem_ctx, parent, name,
+ KEY_CREATE_SUB_KEY, &key);
+ W_ERROR_NOT_OK_GOTO_DONE(err);
+
+ parent = key;
+ name = end+1;
+ }
+
+ if (name[0] == '\0') {
+ err = WERR_INVALID_PARAMETER;
+ goto done;
+ }
+
+ err = delete_reg_subkey(parent->key, name, lazy);
+
+done:
+ return err;
+}
+
+WERROR reg_deletekey(struct registry_key *parent, const char *path)
+{
+ WERROR err;
+ struct registry_key *key;
+ TALLOC_CTX *mem_ctx = talloc_stackframe();
+
+ /* check if the key has subkeys */
+ err = reg_openkey(mem_ctx, parent, path, REG_KEY_READ, &key);
+ W_ERROR_NOT_OK_GOTO_DONE(err);
+
+ err = regdb_transaction_start();
+ if (!W_ERROR_IS_OK(err)) {
+ DEBUG(0, ("reg_deletekey: Error starting transaction: %s\n",
+ win_errstr(err)));
+ goto done;
+ }
+
+ err = fill_subkey_cache(key);
+ if (!W_ERROR_IS_OK(err)) {
+ goto trans_done;
+ }
+
+ if (regsubkey_ctr_numkeys(key->subkeys) > 0) {
+ err = WERR_ACCESS_DENIED;
+ goto trans_done;
+ }
+ err = reg_deletekey_internal(mem_ctx, parent, path, false);
+
+trans_done:
+ if (W_ERROR_IS_OK(err)) {
+ err = regdb_transaction_commit();
+ if (!W_ERROR_IS_OK(err)) {
+ DEBUG(0, ("reg_deletekey: Error committing transaction: %s\n", win_errstr(err)));
+ }
+ } else {
+ WERROR err1 = regdb_transaction_cancel();
+ if (!W_ERROR_IS_OK(err1)) {
+ DEBUG(0, ("reg_deletekey: Error cancelling transaction: %s\n", win_errstr(err1)));
+ }
+ }
+
+done:
+ TALLOC_FREE(mem_ctx);
+ return err;
+}
+
+
+WERROR reg_setvalue(struct registry_key *key, const char *name,
+ const struct registry_value *val)
+{
+ struct regval_blob *existing;
+ WERROR err;
+ int res;
+
+ if (!(key->key->access_granted & KEY_SET_VALUE)) {
+ return WERR_ACCESS_DENIED;
+ }
+
+ err = regdb_transaction_start();
+ if (!W_ERROR_IS_OK(err)) {
+ DEBUG(0, ("reg_setvalue: Failed to start transaction: %s\n",
+ win_errstr(err)));
+ return err;
+ }
+
+ err = fill_value_cache(key);
+ if (!W_ERROR_IS_OK(err)) {
+ DEBUG(0, ("reg_setvalue: Error filling value cache: %s\n", win_errstr(err)));
+ goto done;
+ }
+
+ existing = regval_ctr_getvalue(key->values, name);
+
+ if ((existing != NULL) &&
+ (regval_size(existing) == val->data.length) &&
+ (memcmp(regval_data_p(existing), val->data.data,
+ val->data.length) == 0))
+ {
+ err = WERR_OK;
+ goto done;
+ }
+
+ res = regval_ctr_addvalue(key->values, name, val->type,
+ val->data.data, val->data.length);
+
+ if (res == 0) {
+ TALLOC_FREE(key->values);
+ err = WERR_NOT_ENOUGH_MEMORY;
+ goto done;
+ }
+
+ if (!store_reg_values(key->key, key->values)) {
+ TALLOC_FREE(key->values);
+ DEBUG(0, ("reg_setvalue: store_reg_values failed\n"));
+ err = WERR_REGISTRY_IO_FAILED;
+ goto done;
+ }
+
+ err = WERR_OK;
+
+done:
+ if (W_ERROR_IS_OK(err)) {
+ err = regdb_transaction_commit();
+ if (!W_ERROR_IS_OK(err)) {
+ DEBUG(0, ("reg_setvalue: Error committing transaction: %s\n", win_errstr(err)));
+ }
+ } else {
+ WERROR err1 = regdb_transaction_cancel();
+ if (!W_ERROR_IS_OK(err1)) {
+ DEBUG(0, ("reg_setvalue: Error cancelling transaction: %s\n", win_errstr(err1)));
+ }
+ }
+
+ return err;
+}
+
+static WERROR reg_value_exists(struct registry_key *key, const char *name)
+{
+ struct regval_blob *blob;
+
+ blob = regval_ctr_getvalue(key->values, name);
+
+ if (blob == NULL) {
+ return WERR_FILE_NOT_FOUND;
+ } else {
+ return WERR_OK;
+ }
+}
+
+WERROR reg_deletevalue(struct registry_key *key, const char *name)
+{
+ WERROR err;
+
+ if (!(key->key->access_granted & KEY_SET_VALUE)) {
+ return WERR_ACCESS_DENIED;
+ }
+
+ err = regdb_transaction_start();
+ if (!W_ERROR_IS_OK(err)) {
+ DEBUG(0, ("reg_deletevalue: Failed to start transaction: %s\n",
+ win_errstr(err)));
+ return err;
+ }
+
+ err = fill_value_cache(key);
+ if (!W_ERROR_IS_OK(err)) {
+ DEBUG(0, ("reg_deletevalue; Error filling value cache: %s\n",
+ win_errstr(err)));
+ goto done;
+ }
+
+ err = reg_value_exists(key, name);
+ if (!W_ERROR_IS_OK(err)) {
+ goto done;
+ }
+
+ regval_ctr_delvalue(key->values, name);
+
+ if (!store_reg_values(key->key, key->values)) {
+ TALLOC_FREE(key->values);
+ err = WERR_REGISTRY_IO_FAILED;
+ DEBUG(0, ("reg_deletevalue: store_reg_values failed\n"));
+ goto done;
+ }
+
+ err = WERR_OK;
+
+done:
+ if (W_ERROR_IS_OK(err)) {
+ err = regdb_transaction_commit();
+ if (!W_ERROR_IS_OK(err)) {
+ DEBUG(0, ("reg_deletevalue: Error committing transaction: %s\n", win_errstr(err)));
+ }
+ } else {
+ WERROR err1 = regdb_transaction_cancel();
+ if (!W_ERROR_IS_OK(err1)) {
+ DEBUG(0, ("reg_deletevalue: Error cancelling transaction: %s\n", win_errstr(err1)));
+ }
+ }
+
+ return err;
+}
+
+WERROR reg_getkeysecurity(TALLOC_CTX *mem_ctx, struct registry_key *key,
+ struct security_descriptor **psecdesc)
+{
+ return regkey_get_secdesc(mem_ctx, key->key, psecdesc);
+}
+
+WERROR reg_setkeysecurity(struct registry_key *key,
+ struct security_descriptor *psecdesc)
+{
+ return regkey_set_secdesc(key->key, psecdesc);
+}
+
+WERROR reg_getversion(uint32_t *version)
+{
+ if (version == NULL) {
+ return WERR_INVALID_PARAMETER;
+ }
+
+ *version = 0x00000005; /* Windows 2000 registry API version */
+ return WERR_OK;
+}
+
+/**********************************************************************
+ * Higher level utility functions
+ **********************************************************************/
+
+WERROR reg_deleteallvalues(struct registry_key *key)
+{
+ WERROR err;
+ uint32_t i;
+
+ if (!(key->key->access_granted & KEY_SET_VALUE)) {
+ return WERR_ACCESS_DENIED;
+ }
+
+ if (!W_ERROR_IS_OK(err = fill_value_cache(key))) {
+ return err;
+ }
+
+ for (i=0; i < regval_ctr_numvals(key->values); i++) {
+ struct regval_blob *blob;
+ blob = regval_ctr_specific_value(key->values, i);
+ regval_ctr_delvalue(key->values, regval_name(blob));
+ }
+
+ if (!store_reg_values(key->key, key->values)) {
+ TALLOC_FREE(key->values);
+ return WERR_REGISTRY_IO_FAILED;
+ }
+
+ return WERR_OK;
+}
+
+/*
+ * Utility function to delete a registry key with all its subkeys.
+ * Note that reg_deletekey returns ACCESS_DENIED when called on a
+ * key that has subkeys.
+ */
+static WERROR reg_deletekey_recursive_internal(struct registry_key *parent,
+ const char *path,
+ bool del_key, bool lazy)
+{
+ WERROR werr;
+ struct registry_key *key;
+ char *subkey_name = NULL;
+ uint32_t i;
+ TALLOC_CTX *mem_ctx = talloc_stackframe();
+
+ DEBUG(5, ("reg_deletekey_recursive_internal: deleting '%s' from '%s'\n",
+ path, parent->key->name));
+
+ /* recurse through subkeys first */
+ werr = reg_openkey(mem_ctx, parent, path, REG_KEY_ALL, &key);
+ if (!W_ERROR_IS_OK(werr)) {
+ DEBUG(3, ("reg_deletekey_recursive_internal: error opening "
+ "subkey '%s' of '%s': '%s'\n",
+ path, parent->key->name, win_errstr(werr)));
+ goto done;
+ }
+
+ werr = fill_subkey_cache(key);
+ W_ERROR_NOT_OK_GOTO_DONE(werr);
+
+ /*
+ * loop from top to bottom for performance:
+ * this way, we need to rehash the regsubkey containers less
+ */
+ for (i = regsubkey_ctr_numkeys(key->subkeys) ; i > 0; i--) {
+ subkey_name = regsubkey_ctr_specific_key(key->subkeys, i-1);
+ werr = reg_deletekey_recursive_internal(key, subkey_name, true, del_key);
+ W_ERROR_NOT_OK_GOTO_DONE(werr);
+ }
+
+ if (del_key) {
+ /* now delete the actual key */
+ werr = reg_deletekey_internal(mem_ctx, parent, path, lazy);
+ }
+
+done:
+
+ DEBUG(5, ("reg_deletekey_recursive_internal: done deleting '%s' from "
+ "'%s': %s\n",
+ path, parent->key->name, win_errstr(werr)));
+ TALLOC_FREE(mem_ctx);
+ return werr;
+}
+
+static WERROR reg_deletekey_recursive_trans(struct registry_key *parent,
+ const char *path,
+ bool del_key)
+{
+ WERROR werr;
+
+ werr = regdb_transaction_start();
+ if (!W_ERROR_IS_OK(werr)) {
+ DEBUG(0, ("reg_deletekey_recursive_trans: "
+ "error starting transaction: %s\n",
+ win_errstr(werr)));
+ return werr;
+ }
+
+ werr = reg_deletekey_recursive_internal(parent, path, del_key, false);
+
+ if (!W_ERROR_IS_OK(werr)) {
+ WERROR werr2;
+ DEBUG(W_ERROR_EQUAL(werr, WERR_FILE_NOT_FOUND) ? 5 : 1,
+ (__location__ ": failed to delete key '%s' from key "
+ "'%s': %s\n", path, parent->key->name,
+ win_errstr(werr)));
+
+ werr2 = regdb_transaction_cancel();
+ if (!W_ERROR_IS_OK(werr2)) {
+ DEBUG(0, ("reg_deletekey_recursive_trans: "
+ "error cancelling transaction: %s\n",
+ win_errstr(werr2)));
+ /*
+ * return the original werr or the
+ * error from cancelling the transaction?
+ */
+ }
+ } else {
+ werr = regdb_transaction_commit();
+ if (!W_ERROR_IS_OK(werr)) {
+ DEBUG(0, ("reg_deletekey_recursive_trans: "
+ "error committing transaction: %s\n",
+ win_errstr(werr)));
+ } else {
+ DEBUG(5, ("reg_deletekey_recursive_trans: deleted key '%s' from '%s'\n",
+ path, parent->key->name));
+
+ }
+ }
+
+ return werr;
+}
+
+WERROR reg_deletekey_recursive(struct registry_key *parent,
+ const char *path)
+{
+ return reg_deletekey_recursive_trans(parent, path, true);
+}
+
+WERROR reg_deletesubkeys_recursive(struct registry_key *parent,
+ const char *path)
+{
+ return reg_deletekey_recursive_trans(parent, path, false);
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 19:07:49 +0000