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-rw-r--r--source4/lib/registry/ldb.c501
1 files changed, 501 insertions, 0 deletions
diff --git a/source4/lib/registry/ldb.c b/source4/lib/registry/ldb.c
new file mode 100644
index 0000000000..8ee4d9f932
--- /dev/null
+++ b/source4/lib/registry/ldb.c
@@ -0,0 +1,501 @@
+/*
+ Unix SMB/CIFS implementation.
+ Registry interface
+ Copyright (C) Jelmer Vernooij 2004-2007.
+
+ 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 "registry.h"
+#include "lib/ldb/include/ldb.h"
+#include "lib/ldb/include/ldb_errors.h"
+#include "db_wrap.h"
+#include "librpc/gen_ndr/winreg.h"
+
+static struct hive_operations reg_backend_ldb;
+
+struct ldb_key_data
+{
+ struct hive_key key;
+ struct ldb_context *ldb;
+ struct ldb_dn *dn;
+ struct ldb_message **subkeys, **values;
+ int subkey_count, value_count;
+};
+
+static void reg_ldb_unpack_value(TALLOC_CTX *mem_ctx, struct ldb_message *msg, const char **name,
+ uint32_t *type, DATA_BLOB *data)
+{
+ const struct ldb_val *val;
+ if (name != NULL)
+ *name = talloc_strdup(mem_ctx, ldb_msg_find_attr_as_string(msg, "value", NULL));
+
+ if (type != NULL)
+ *type = ldb_msg_find_attr_as_uint(msg, "type", 0);
+ val = ldb_msg_find_ldb_val(msg, "data");
+
+ switch (*type)
+ {
+ case REG_SZ:
+ case REG_EXPAND_SZ:
+ data->length = convert_string_talloc(mem_ctx, CH_UTF8, CH_UTF16,
+ val->data, val->length, (void **)&data->data);
+ break;
+
+ case REG_DWORD: {
+ uint32_t tmp = strtoul((char *)val->data, NULL, 0);
+ *data = data_blob_talloc(mem_ctx, &tmp, 4);
+ }
+ break;
+
+ default:
+ *data = data_blob_talloc(mem_ctx, val->data, val->length);
+ break;
+ }
+}
+
+static struct ldb_message *reg_ldb_pack_value(struct ldb_context *ctx,
+ TALLOC_CTX *mem_ctx, const char *name,
+ uint32_t type, DATA_BLOB data)
+{
+ struct ldb_val val;
+ struct ldb_message *msg = talloc_zero(mem_ctx, struct ldb_message);
+ char *type_s;
+
+ ldb_msg_add_string(msg, "value", talloc_strdup(mem_ctx, name));
+
+ switch (type) {
+ case REG_SZ:
+ case REG_EXPAND_SZ:
+ val.length = convert_string_talloc(mem_ctx, CH_UTF16, CH_UTF8,
+ (void *)data.data, data.length, (void **)&val.data);
+ ldb_msg_add_value(msg, "data", &val, NULL);
+ break;
+
+ case REG_DWORD:
+ ldb_msg_add_string(msg, "data", talloc_asprintf(mem_ctx, "0x%x", IVAL(data.data, 0)));
+ break;
+ default:
+ ldb_msg_add_value(msg, "data", &data, NULL);
+ }
+
+
+ type_s = talloc_asprintf(mem_ctx, "%u", type);
+ ldb_msg_add_string(msg, "type", type_s);
+
+ return msg;
+}
+
+
+static int reg_close_ldb_key(struct ldb_key_data *key)
+{
+ if (key->subkeys != NULL) {
+ talloc_free(key->subkeys);
+ key->subkeys = NULL;
+ }
+
+ if (key->values != NULL) {
+ talloc_free(key->values);
+ key->values = NULL;
+ }
+ return 0;
+}
+
+static struct ldb_dn *reg_path_to_ldb(TALLOC_CTX *mem_ctx,
+ const struct hive_key *from,
+ const char *path, const char *add)
+{
+ TALLOC_CTX *local_ctx;
+ struct ldb_dn *ret;
+ char *mypath = talloc_strdup(mem_ctx, path);
+ char *begin;
+ struct ldb_key_data *kd = talloc_get_type(from, struct ldb_key_data);
+ struct ldb_context *ldb = kd->ldb;
+
+ local_ctx = talloc_new(mem_ctx);
+
+ if (add) {
+ ret = ldb_dn_new(mem_ctx, ldb, add);
+ } else {
+ ret = ldb_dn_new(mem_ctx, ldb, NULL);
+ }
+ if (!ldb_dn_validate(ret)) {
+ talloc_free(ret);
+ talloc_free(local_ctx);
+ return NULL;
+ }
+
+ while (mypath) {
+ char *keyname;
+
+ begin = strrchr(mypath, '\\');
+
+ if (begin) keyname = begin + 1;
+ else keyname = mypath;
+
+ if(strlen(keyname)) {
+ ldb_dn_add_base_fmt(ret, "key=%s", keyname);
+ }
+
+ if(begin) {
+ *begin = '\0';
+ } else {
+ break;
+ }
+ }
+
+ ldb_dn_add_base(ret, kd->dn);
+
+ talloc_free(local_ctx);
+
+ return ret;
+}
+
+static WERROR cache_subkeys(struct ldb_key_data *kd)
+{
+ struct ldb_context *c = kd->ldb;
+ struct ldb_result *res;
+ int ret;
+
+ ret = ldb_search(c, kd->dn, LDB_SCOPE_ONELEVEL, "(key=*)", NULL, &res);
+
+ if (ret != LDB_SUCCESS) {
+ DEBUG(0, ("Error getting subkeys for '%s': %s\n", ldb_dn_get_linearized(kd->dn), ldb_errstring(c)));
+ return WERR_FOOBAR;
+ }
+
+ kd->subkey_count = res->count;
+ kd->subkeys = talloc_steal(kd, res->msgs);
+ talloc_free(res);
+
+ return WERR_OK;
+}
+
+static WERROR cache_values(struct ldb_key_data *kd)
+{
+ struct ldb_context *c = kd->ldb;
+ struct ldb_result *res;
+ int ret;
+
+ ret = ldb_search(c, kd->dn, LDB_SCOPE_ONELEVEL, "(value=*)", NULL, &res);
+
+ if (ret != LDB_SUCCESS) {
+ DEBUG(0, ("Error getting values for '%s': %s\n", ldb_dn_get_linearized(kd->dn), ldb_errstring(c)));
+ return WERR_FOOBAR;
+ }
+ kd->value_count = res->count;
+ kd->values = talloc_steal(kd, res->msgs);
+ talloc_free(res);
+ return WERR_OK;
+}
+
+
+static WERROR ldb_get_subkey_by_id(TALLOC_CTX *mem_ctx,
+ const struct hive_key *k, uint32_t idx,
+ const char **name,
+ const char **classname,
+ NTTIME *last_mod_time)
+{
+ struct ldb_message_element *el;
+ struct ldb_key_data *kd = talloc_get_type(k, struct ldb_key_data);
+
+ /* Do a search if necessary */
+ if (kd->subkeys == NULL) {
+ W_ERROR_NOT_OK_RETURN(cache_subkeys(kd));
+ }
+
+ if (idx >= kd->subkey_count)
+ return WERR_NO_MORE_ITEMS;
+
+ el = ldb_msg_find_element(kd->subkeys[idx], "key");
+ SMB_ASSERT(el != NULL);
+ SMB_ASSERT(el->num_values != 0);
+
+ if (name != NULL)
+ *name = talloc_strdup(mem_ctx, (char *)el->values[0].data);
+
+ if (classname != NULL)
+ *classname = NULL; /* TODO: Store properly */
+
+ if (last_mod_time != NULL)
+ *last_mod_time = 0; /* TODO: we need to add this to the
+ ldb backend properly */
+
+ return WERR_OK;
+}
+
+static WERROR ldb_get_value_by_id(TALLOC_CTX *mem_ctx, const struct hive_key *k, int idx,
+ const char **name, uint32_t *data_type, DATA_BLOB *data)
+{
+ struct ldb_key_data *kd = talloc_get_type(k, struct ldb_key_data);
+
+ /* Do the search if necessary */
+ if (kd->values == NULL) {
+ W_ERROR_NOT_OK_RETURN(cache_values(kd));
+ }
+
+ if(idx >= kd->value_count) return WERR_NO_MORE_ITEMS;
+
+ reg_ldb_unpack_value(mem_ctx, kd->values[idx],
+ name, data_type, data);
+
+ return WERR_OK;
+}
+
+static WERROR ldb_get_value(TALLOC_CTX *mem_ctx, struct hive_key *k,
+ const char *name, uint32_t *data_type, DATA_BLOB *data)
+{
+ struct ldb_key_data *kd = talloc_get_type(k, struct ldb_key_data);
+ struct ldb_context *c = kd->ldb;
+ struct ldb_result *res;
+ int ret;
+ char *query = talloc_asprintf(mem_ctx, "(value=%s)", name);
+
+ ret = ldb_search(c, kd->dn, LDB_SCOPE_ONELEVEL, query, NULL, &res);
+
+ talloc_free(query);
+
+ if (ret != LDB_SUCCESS) {
+ DEBUG(0, ("Error getting values for '%s': %s\n", ldb_dn_get_linearized(kd->dn), ldb_errstring(c)));
+ return WERR_FOOBAR;
+ }
+
+ if (res->count == 0)
+ return WERR_NOT_FOUND;
+
+ reg_ldb_unpack_value(mem_ctx, res->msgs[0], NULL, data_type, data);
+
+ return WERR_OK;
+}
+
+static WERROR ldb_open_key(TALLOC_CTX *mem_ctx, const struct hive_key *h,
+ const char *name, struct hive_key **key)
+{
+ struct ldb_result *res;
+ struct ldb_dn *ldap_path;
+ int ret;
+ struct ldb_key_data *newkd;
+ struct ldb_key_data *kd = talloc_get_type(h, struct ldb_key_data);
+ struct ldb_context *c = kd->ldb;
+
+ ldap_path = reg_path_to_ldb(mem_ctx, h, name, NULL);
+
+ ret = ldb_search(c, ldap_path, LDB_SCOPE_BASE, "(key=*)", NULL, &res);
+
+ if (ret != LDB_SUCCESS) {
+ DEBUG(0, ("Error opening key '%s': %s\n",
+ ldb_dn_get_linearized(ldap_path), ldb_errstring(c)));
+ return WERR_FOOBAR;
+ } else if (res->count == 0) {
+ DEBUG(0, ("Key '%s' not found\n", ldb_dn_get_linearized(ldap_path)));
+ talloc_free(res);
+ return WERR_NOT_FOUND;
+ }
+
+ newkd = talloc_zero(mem_ctx, struct ldb_key_data);
+ newkd->key.ops = &reg_backend_ldb;
+ newkd->ldb = talloc_reference(newkd, kd->ldb);
+ newkd->dn = ldb_dn_copy(mem_ctx, res->msgs[0]->dn);
+
+ *key = (struct hive_key *)newkd;
+
+ talloc_free(res);
+
+ return WERR_OK;
+}
+
+WERROR reg_open_ldb_file(TALLOC_CTX *parent_ctx, const char *location,
+ struct auth_session_info *session_info,
+ struct cli_credentials *credentials,
+ struct hive_key **k)
+{
+ struct ldb_key_data *kd;
+ struct ldb_context *wrap;
+
+ if (location == NULL)
+ return WERR_INVALID_PARAM;
+
+ wrap = ldb_wrap_connect(parent_ctx, location, session_info,
+ credentials, 0, NULL);
+
+ if (wrap == NULL) {
+ DEBUG(1, (__FILE__": unable to connect\n"));
+ return WERR_FOOBAR;
+ }
+
+ ldb_set_debug_stderr(wrap);
+
+ kd = talloc_zero(parent_ctx, struct ldb_key_data);
+ kd->key.ops = &reg_backend_ldb;
+ kd->ldb = talloc_reference(kd, wrap);
+ talloc_set_destructor (kd, reg_close_ldb_key);
+ kd->dn = ldb_dn_new(kd, wrap, "hive=NONE");
+
+ *k = (struct hive_key *)kd;
+
+ return WERR_OK;
+}
+
+static WERROR ldb_add_key (TALLOC_CTX *mem_ctx, const struct hive_key *parent,
+ const char *name, const char *classname,
+ struct security_descriptor *sd,
+ struct hive_key **newkey)
+{
+ const struct ldb_key_data *parentkd = (const struct ldb_key_data *)parent;
+ struct ldb_message *msg;
+ struct ldb_key_data *newkd;
+ int ret;
+
+ msg = ldb_msg_new(mem_ctx);
+
+ msg->dn = reg_path_to_ldb(msg, parent, name, NULL);
+
+ ldb_msg_add_string(msg, "key", talloc_strdup(mem_ctx, name));
+ if (classname != NULL)
+ ldb_msg_add_string(msg, "classname", talloc_strdup(mem_ctx, classname));
+
+ ret = ldb_add(parentkd->ldb, msg);
+ if (ret < 0) {
+ DEBUG(1, ("ldb_msg_add: %s\n", ldb_errstring(parentkd->ldb)));
+ return WERR_FOOBAR;
+ }
+
+ DEBUG(2, ("key added: %s\n", ldb_dn_get_linearized(msg->dn)));
+
+ newkd = talloc_zero(mem_ctx, struct ldb_key_data);
+ newkd->ldb = talloc_reference(newkd, parentkd->ldb);
+ newkd->key.ops = &reg_backend_ldb;
+ newkd->dn = talloc_steal(newkd, msg->dn);
+
+ *newkey = (struct hive_key *)newkd;
+
+ return WERR_OK;
+}
+
+static WERROR ldb_del_key (const struct hive_key *key, const char *child)
+{
+ int ret;
+ struct ldb_key_data *parentkd = talloc_get_type(key, struct ldb_key_data);
+ struct ldb_dn *childdn;
+
+ childdn = ldb_dn_copy(parentkd->ldb, parentkd->dn);
+ ldb_dn_add_child_fmt(childdn, "key=%s", child);
+
+ ret = ldb_delete(parentkd->ldb, childdn);
+
+ talloc_free(childdn);
+
+ if (ret == LDB_ERR_NO_SUCH_OBJECT) {
+ return WERR_NOT_FOUND;
+ } else if (ret < 0) {
+ DEBUG(1, ("ldb_del_key: %s\n", ldb_errstring(parentkd->ldb)));
+ return WERR_FOOBAR;
+ }
+
+ return WERR_OK;
+}
+
+static WERROR ldb_del_value (struct hive_key *key, const char *child)
+{
+ int ret;
+ struct ldb_key_data *kd = talloc_get_type(key, struct ldb_key_data);
+ struct ldb_dn *childdn;
+
+ childdn = ldb_dn_copy(kd->ldb, kd->dn);
+ ldb_dn_add_child_fmt(childdn, "value=%s", child);
+
+ ret = ldb_delete(kd->ldb, childdn);
+
+ talloc_free(childdn);
+
+ if (ret == LDB_ERR_NO_SUCH_OBJECT) {
+ return WERR_NOT_FOUND;
+ } else if (ret < 0) {
+ DEBUG(1, ("ldb_del_value: %s\n", ldb_errstring(kd->ldb)));
+ return WERR_FOOBAR;
+ }
+
+ return WERR_OK;
+}
+
+static WERROR ldb_set_value(struct hive_key *parent,
+ const char *name, uint32_t type,
+ const DATA_BLOB data)
+{
+ struct ldb_message *msg;
+ struct ldb_key_data *kd = talloc_get_type(parent, struct ldb_key_data);
+ int ret;
+ TALLOC_CTX *mem_ctx = talloc_init("ldb_set_value");
+
+ msg = reg_ldb_pack_value(kd->ldb, mem_ctx, name, type, data);
+
+ msg->dn = ldb_dn_copy(msg, kd->dn);
+ ldb_dn_add_child_fmt(msg->dn, "value=%s", name);
+
+ ret = ldb_add(kd->ldb, msg);
+ if (ret < 0) {
+ ret = ldb_modify(kd->ldb, msg);
+ if (ret < 0) {
+ DEBUG(1, ("ldb_msg_add: %s\n", ldb_errstring(kd->ldb)));
+ talloc_free(mem_ctx);
+ return WERR_FOOBAR;
+ }
+ }
+
+ talloc_free(mem_ctx);
+ return WERR_OK;
+}
+
+static WERROR ldb_get_key_info(TALLOC_CTX *mem_ctx,
+ const struct hive_key *key,
+ const char **classname,
+ uint32_t *num_subkeys,
+ uint32_t *num_values,
+ NTTIME *last_change_time)
+{
+ struct ldb_key_data *kd = talloc_get_type(key, struct ldb_key_data);
+
+ /* FIXME */
+ if (classname != NULL)
+ *classname = NULL;
+
+ if (num_subkeys != NULL) {
+ W_ERROR_NOT_OK_RETURN(cache_subkeys(kd));
+ *num_subkeys = kd->subkey_count;
+ }
+
+ if (num_values != NULL) {
+ W_ERROR_NOT_OK_RETURN(cache_values(kd));
+ *num_values = kd->value_count;
+ }
+
+ if (last_change_time != NULL)
+ *last_change_time = 0;
+
+ return WERR_OK;
+}
+
+static struct hive_operations reg_backend_ldb = {
+ .name = "ldb",
+ .add_key = ldb_add_key,
+ .del_key = ldb_del_key,
+ .get_key_by_name = ldb_open_key,
+ .enum_value = ldb_get_value_by_id,
+ .enum_key = ldb_get_subkey_by_id,
+ .set_value = ldb_set_value,
+ .get_value_by_name = ldb_get_value,
+ .delete_value = ldb_del_value,
+ .get_key_info = ldb_get_key_info,
+};
generated by cgit (git 2.34.1) at 2024-11-12 09:26:04 +0000