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-rw-r--r--source4/lib/registry/ldb.c223
1 files changed, 166 insertions, 57 deletions
diff --git a/source4/lib/registry/ldb.c b/source4/lib/registry/ldb.c
index 25b8c583ed..9c1f59c4df 100644
--- a/source4/lib/registry/ldb.c
+++ b/source4/lib/registry/ldb.c
@@ -1,7 +1,8 @@
/*
Unix SMB/CIFS implementation.
Registry interface
- Copyright (C) Jelmer Vernooij 2004-2007.
+ Copyright (C) 2004-2007, Jelmer Vernooij, jelmer@samba.org
+ Copyright (C) 2008 Matthias Dieter Wallnöfer, mwallnoefer@yahoo.de
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
@@ -51,17 +52,31 @@ static void reg_ldb_unpack_value(TALLOC_CTX *mem_ctx,
NULL));
value_type = ldb_msg_find_attr_as_uint(msg, "type", 0);
- if (type != NULL)
- *type = value_type;
+ *type = value_type;
+
val = ldb_msg_find_ldb_val(msg, "data");
switch (value_type)
{
case REG_SZ:
case REG_EXPAND_SZ:
- data->length = convert_string_talloc(mem_ctx, iconv_convenience, CH_UTF8, CH_UTF16,
+ if (val != NULL)
+ data->length = convert_string_talloc(mem_ctx, iconv_convenience, CH_UTF8, CH_UTF16,
val->data, val->length,
(void **)&data->data);
+ else {
+ data->data = NULL;
+ data->length = 0;
+ }
+ break;
+
+ case REG_BINARY:
+ if (val != NULL)
+ *data = *val;
+ else {
+ data->data = NULL;
+ data->length = 0;
+ }
break;
case REG_DWORD: {
@@ -71,7 +86,7 @@ static void reg_ldb_unpack_value(TALLOC_CTX *mem_ctx,
break;
default:
- *data = data_blob_talloc(mem_ctx, val->data, val->length);
+ *data = *val;
break;
}
}
@@ -90,11 +105,22 @@ static struct ldb_message *reg_ldb_pack_value(struct ldb_context *ctx,
switch (type) {
case REG_SZ:
case REG_EXPAND_SZ:
- val.length = convert_string_talloc(mem_ctx, lp_iconv_convenience(global_loadparm), CH_UTF16, CH_UNIX,
+ if (data.data[0] != '\0') {
+ val.length = convert_string_talloc(mem_ctx, lp_iconv_convenience(global_loadparm), CH_UTF16, CH_UTF8,
(void *)data.data,
data.length,
(void **)&val.data);
- ldb_msg_add_value(msg, "data", &val, NULL);
+ ldb_msg_add_value(msg, "data", &val, NULL);
+ } else {
+ ldb_msg_add_empty(msg, "data", LDB_FLAG_MOD_DELETE, NULL);
+ }
+ break;
+
+ case REG_BINARY:
+ if (data.length > 0)
+ ldb_msg_add_value(msg, "data", &data, NULL);
+ else
+ ldb_msg_add_empty(msg, "data", LDB_FLAG_MOD_DELETE, NULL);
break;
case REG_DWORD:
@@ -228,9 +254,11 @@ static WERROR cache_values(struct ldb_key_data *kd)
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;
}
@@ -243,6 +271,15 @@ static WERROR ldb_get_subkey_by_id(TALLOC_CTX *mem_ctx,
{
struct ldb_message_element *el;
struct ldb_key_data *kd = talloc_get_type(k, struct ldb_key_data);
+
+ /* Initialization */
+ if (name != NULL)
+ *name = NULL;
+ 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 */
/* Do a search if necessary */
if (kd->subkeys == NULL) {
@@ -259,12 +296,34 @@ static WERROR ldb_get_subkey_by_id(TALLOC_CTX *mem_ctx,
if (name != NULL)
*name = talloc_strdup(mem_ctx, (char *)el->values[0].data);
- if (classname != NULL)
- *classname = NULL; /* TODO: Store properly */
+ return WERR_OK;
+}
- if (last_mod_time != NULL)
- *last_mod_time = 0; /* TODO: we need to add this to the
- ldb backend properly */
+static WERROR ldb_get_default_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;
+ const char* attrs[] = { "data", "type", NULL };
+ struct ldb_result *res;
+ int ret;
+
+ ret = ldb_search(c, kd->dn, LDB_SCOPE_BASE, "", attrs, &res);
+
+ if (ret != LDB_SUCCESS) {
+ DEBUG(0, ("Error getting default value for '%s': %s\n",
+ ldb_dn_get_linearized(kd->dn), ldb_errstring(c)));
+ return WERR_FOOBAR;
+ }
+
+ if (res->count == 0 || res->msgs[0]->num_elements == 0)
+ return WERR_BADFILE;
+
+ reg_ldb_unpack_value(mem_ctx, lp_iconv_convenience(global_loadparm),
+ res->msgs[0], name, data_type, data);
+
+ talloc_free(res);
return WERR_OK;
}
@@ -275,6 +334,15 @@ static WERROR ldb_get_value_by_id(TALLOC_CTX *mem_ctx, struct hive_key *k,
{
struct ldb_key_data *kd = talloc_get_type(k, struct ldb_key_data);
+ /* if default value exists, give it back */
+ if (W_ERROR_IS_OK(ldb_get_default_value(mem_ctx, k, name, data_type,
+ data))) {
+ if (idx == 0)
+ return WERR_OK;
+ else
+ --idx;
+ }
+
/* Do the search if necessary */
if (kd->values == NULL) {
W_ERROR_NOT_OK_RETURN(cache_values(kd));
@@ -283,8 +351,8 @@ static WERROR ldb_get_value_by_id(TALLOC_CTX *mem_ctx, struct hive_key *k,
if (idx >= kd->value_count)
return WERR_NO_MORE_ITEMS;
- reg_ldb_unpack_value(mem_ctx, lp_iconv_convenience(global_loadparm), kd->values[idx],
- name, data_type, data);
+ reg_ldb_unpack_value(mem_ctx, lp_iconv_convenience(global_loadparm),
+ kd->values[idx], name, data_type, data);
return WERR_OK;
}
@@ -297,26 +365,32 @@ static WERROR ldb_get_value(TALLOC_CTX *mem_ctx, struct hive_key *k,
struct ldb_context *c = kd->ldb;
struct ldb_result *res;
int ret;
- char *query = talloc_asprintf(mem_ctx, "(value=%s)", name);
+ char *query;
- ret = ldb_search(c, mem_ctx, &res, kd->dn, LDB_SCOPE_ONELEVEL, NULL, "%s", query);
+ if (strlen(name) == 0) {
+ /* default value */
+ return ldb_get_default_value(mem_ctx, k, NULL, data_type, data);
+ } else {
+ /* normal value */
+ query = talloc_asprintf(mem_ctx, "(value=%s)", name);
+ ret = ldb_search(c, kd->dn, &res, LDB_SCOPE_ONELEVEL, query, NULL, "%s", query);
+ 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;
+ }
- talloc_free(query);
+ if (res->count == 0)
+ return WERR_BADFILE;
- if (ret != LDB_SUCCESS) {
- DEBUG(0, ("Error getting values for '%s': %s\n",
- ldb_dn_get_linearized(kd->dn), ldb_errstring(c)));
- talloc_free(res);
- return WERR_FOOBAR;
- }
+ reg_ldb_unpack_value(mem_ctx, lp_iconv_convenience(global_loadparm),
+ res->msgs[0], NULL, data_type, data);
- if (res->count == 0) {
talloc_free(res);
- return WERR_BADFILE;
}
- reg_ldb_unpack_value(mem_ctx, lp_iconv_convenience(global_loadparm), res->msgs[0], NULL, data_type, data);
-
talloc_free(res);
return WERR_OK;
}
@@ -353,8 +427,6 @@ static WERROR ldb_open_key(TALLOC_CTX *mem_ctx, const struct hive_key *h,
*key = (struct hive_key *)newkd;
- talloc_free(res);
-
return WERR_OK;
}
@@ -451,25 +523,47 @@ 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);
+ TALLOC_CTX *mem_ctx;
+ struct ldb_message *msg;
struct ldb_dn *childdn;
- childdn = ldb_dn_copy(kd->ldb, kd->dn);
- if (!ldb_dn_add_child_fmt(childdn, "value=%s",
+ if (strlen(child) == 0) {
+ /* default value */
+ mem_ctx = talloc_init("ldb_del_value");
+
+ msg = talloc_zero(mem_ctx, struct ldb_message);
+ msg->dn = ldb_dn_copy(msg, kd->dn);
+ ldb_msg_add_empty(msg, "data", LDB_FLAG_MOD_DELETE, NULL);
+ ldb_msg_add_empty(msg, "type", LDB_FLAG_MOD_DELETE, NULL);
+
+ ret = ldb_modify(kd->ldb, msg);
+ if (ret != LDB_SUCCESS) {
+ DEBUG(1, ("ldb_del_value: %s\n", ldb_errstring(kd->ldb)));
+ talloc_free(mem_ctx);
+ return WERR_FOOBAR;
+ }
+
+ talloc_free(mem_ctx);
+ } else {
+ /* normal value */
+ childdn = ldb_dn_copy(kd->ldb, kd->dn);
+ if (!ldb_dn_add_child_fmt(childdn, "value=%s",
reg_ldb_escape(childdn, child)))
- {
- talloc_free(childdn);
- return WERR_FOOBAR;
- }
+ {
+ talloc_free(childdn);
+ return WERR_FOOBAR;
+ }
- ret = ldb_delete(kd->ldb, childdn);
+ ret = ldb_delete(kd->ldb, childdn);
- talloc_free(childdn);
+ talloc_free(childdn);
- if (ret == LDB_ERR_NO_SUCH_OBJECT) {
- return WERR_BADFILE;
- } else if (ret != LDB_SUCCESS) {
- DEBUG(1, ("ldb_del_value: %s\n", ldb_errstring(kd->ldb)));
- return WERR_FOOBAR;
+ if (ret == LDB_ERR_NO_SUCH_OBJECT) {
+ return WERR_BADFILE;
+ } else if (ret != LDB_SUCCESS) {
+ DEBUG(1, ("ldb_del_value: %s\n", ldb_errstring(kd->ldb)));
+ return WERR_FOOBAR;
+ }
}
/* reset cache */
@@ -605,26 +699,31 @@ static WERROR ldb_set_value(struct hive_key *parent,
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);
- if (!ldb_dn_add_child_fmt(msg->dn, "value=%s",
+
+ if (strlen(name) > 0) {
+ /* For a default value, we add/overwrite the attributes to/of the hive.
+ For a normal value, we create new childs. */
+ if (!ldb_dn_add_child_fmt(msg->dn, "value=%s",
reg_ldb_escape(mem_ctx, name)))
- {
- talloc_free(mem_ctx);
- return WERR_FOOBAR;
+ {
+ talloc_free(mem_ctx);
+ return WERR_FOOBAR;
+ }
}
ret = ldb_add(kd->ldb, msg);
if (ret == LDB_ERR_ENTRY_ALREADY_EXISTS) {
int i;
for (i = 0; i < msg->num_elements; i++) {
- msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
+ if (msg->elements[i].flags != LDB_FLAG_MOD_DELETE)
+ msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
}
ret = ldb_modify(kd->ldb, msg);
}
if (ret != LDB_SUCCESS) {
- DEBUG(1, ("ldb_msg_add: %s\n", ldb_errstring(kd->ldb)));
+ DEBUG(1, ("ldb_set_value: %s\n", ldb_errstring(kd->ldb)));
talloc_free(mem_ctx);
return WERR_FOOBAR;
}
@@ -649,6 +748,22 @@ static WERROR ldb_get_key_info(TALLOC_CTX *mem_ctx,
{
struct ldb_key_data *kd = talloc_get_type(key, struct ldb_key_data);
+ /* Initialization */
+ if (classname != NULL)
+ *classname = NULL;
+ if (num_subkeys != NULL)
+ *num_subkeys = 0;
+ if (num_values != NULL)
+ *num_values = 0;
+ if (last_change_time != NULL)
+ *last_change_time = 0;
+ if (max_subkeynamelen != NULL)
+ *max_subkeynamelen = 0;
+ if (max_valnamelen != NULL)
+ *max_valnamelen = 0;
+ if (max_valbufsize != NULL)
+ *max_valbufsize = 0;
+
if (kd->subkeys == NULL) {
W_ERROR_NOT_OK_RETURN(cache_subkeys(kd));
}
@@ -657,20 +772,13 @@ static WERROR ldb_get_key_info(TALLOC_CTX *mem_ctx,
W_ERROR_NOT_OK_RETURN(cache_values(kd));
}
- /* FIXME */
- if (classname != NULL)
- *classname = NULL;
-
if (num_subkeys != NULL) {
*num_subkeys = kd->subkey_count;
}
-
if (num_values != NULL) {
*num_values = kd->value_count;
}
- if (last_change_time != NULL)
- *last_change_time = 0;
if (max_subkeynamelen != NULL) {
int i;
@@ -702,11 +810,12 @@ static WERROR ldb_get_key_info(TALLOC_CTX *mem_ctx,
}
if (max_valbufsize != NULL) {
+ uint32_t data_type;
DATA_BLOB data;
reg_ldb_unpack_value(mem_ctx,
lp_iconv_convenience(global_loadparm),
kd->values[i], NULL,
- NULL, &data);
+ &data_type, &data);
*max_valbufsize = MAX(*max_valbufsize, data.length);
talloc_free(data.data);
}