-/*
+/*
ldb database library
Copyright (C) Andrew Tridgell 2004
Copyright (C) Stefan Metzmacher 2004
-
+ Copyright (C) Simo Sorce 2006-2008
+
** NOTE! The following LGPL license applies to the ldb
** library. This does NOT imply that all of Samba is released
** under the LGPL
-
+
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 3 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
/*
- * Name: ldb
+ * Name: ldb_tdb
*
* Component: ldb tdb backend
*
*
* Author: Andrew Tridgell
* Author: Stefan Metzmacher
+ *
+ * Modifications:
+ *
+ * - description: make the module use asyncronous calls
+ * date: Feb 2006
+ * Author: Simo Sorce
+ *
+ * - description: make it possible to use event contexts
+ * date: Jan 2008
+ * Author: Simo Sorce
*/
-#include "includes.h"
-#include "ldb/include/ldb.h"
-#include "ldb/include/ldb_private.h"
-#include "ldb/ldb_tdb/ldb_tdb.h"
+#include "ldb_includes.h"
-#define LDBLOCK "@INT_LDBLOCK"
+#include "ldb_tdb.h"
+
+
+/*
+ map a tdb error code to a ldb error code
+*/
+static int ltdb_err_map(enum TDB_ERROR tdb_code)
+{
+ switch (tdb_code) {
+ case TDB_SUCCESS:
+ return LDB_SUCCESS;
+ case TDB_ERR_CORRUPT:
+ case TDB_ERR_OOM:
+ case TDB_ERR_EINVAL:
+ return LDB_ERR_OPERATIONS_ERROR;
+ case TDB_ERR_IO:
+ return LDB_ERR_PROTOCOL_ERROR;
+ case TDB_ERR_LOCK:
+ case TDB_ERR_NOLOCK:
+ return LDB_ERR_BUSY;
+ case TDB_ERR_LOCK_TIMEOUT:
+ return LDB_ERR_TIME_LIMIT_EXCEEDED;
+ case TDB_ERR_EXISTS:
+ return LDB_ERR_ENTRY_ALREADY_EXISTS;
+ case TDB_ERR_NOEXIST:
+ return LDB_ERR_NO_SUCH_OBJECT;
+ case TDB_ERR_RDONLY:
+ return LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS;
+ }
+ return LDB_ERR_OTHER;
+}
+
+/*
+ lock the database for read - use by ltdb_search and ltdb_sequence_number
+*/
+int ltdb_lock_read(struct ldb_module *module)
+{
+ struct ltdb_private *ltdb = (struct ltdb_private *)module->private_data;
+ if (ltdb->in_transaction == 0) {
+ return tdb_lockall_read(ltdb->tdb);
+ }
+ return 0;
+}
+
+/*
+ unlock the database after a ltdb_lock_read()
+*/
+int ltdb_unlock_read(struct ldb_module *module)
+{
+ struct ltdb_private *ltdb = (struct ltdb_private *)module->private_data;
+ if (ltdb->in_transaction == 0) {
+ return tdb_unlockall_read(ltdb->tdb);
+ }
+ return 0;
+}
/*
form a TDB_DATA for a record key
caller frees
- note that the key for a record can depend on whether the
+ note that the key for a record can depend on whether the
dn refers to a case sensitive index record or not
*/
-struct TDB_DATA ltdb_key(struct ldb_module *module, const char *dn)
+struct TDB_DATA ltdb_key(struct ldb_module *module, struct ldb_dn *dn)
{
struct ldb_context *ldb = module->ldb;
TDB_DATA key;
char *key_str = NULL;
- char *dn_folded = NULL;
+ const char *dn_folded = NULL;
/*
most DNs are case insensitive. The exception is index DNs for
1) if the dn doesn't start with @ then uppercase the attribute
names and the attributes values of case insensitive attributes
- 2) if the dn starts with @ then leave it alone - the indexing code handles
- the rest
+ 2) if the dn starts with @ then leave it alone -
+ the indexing code handles the rest
*/
- if (*dn == '@') {
- dn_folded = talloc_strdup(ldb, dn);
- } else {
- struct ldb_dn *edn, *cedn;
-
- edn = ldb_dn_explode(ldb, dn);
- if (!edn)
- goto failed;
-
- cedn = ldb_dn_casefold(ldb, edn);
- if (!cedn)
- goto failed;
-
- dn_folded = ldb_dn_linearize(ldb, cedn);
- if (!dn_folded)
- goto failed;
-
- talloc_free(edn);
- talloc_free(cedn);
- }
+ dn_folded = ldb_dn_get_casefold(dn);
if (!dn_folded) {
goto failed;
}
- key_str = talloc_asprintf(ldb, "DN=%s", dn_folded);
- talloc_free(dn_folded);
+ key_str = talloc_strdup(ldb, "DN=");
+ if (!key_str) {
+ goto failed;
+ }
+ key_str = talloc_strdup_append_buffer(key_str, dn_folded);
if (!key_str) {
goto failed;
}
- key.dptr = key_str;
- key.dsize = strlen(key_str)+1;
+ key.dptr = (uint8_t *)key_str;
+ key.dsize = strlen(key_str) + 1;
return key;
return key;
}
-/*
- lock the database for write - currently a single lock is used
-*/
-static int ltdb_lock(struct ldb_module *module, const char *lockname)
-{
- struct ltdb_private *ltdb = module->private_data;
- char *lock_dn;
- TDB_DATA key;
- int ret;
-
- if (lockname == NULL) {
- return -1;
- }
-
- lock_dn = talloc_asprintf(module->ldb, "%s_%s", LDBLOCK, lockname);
- if (lock_dn == NULL) {
- return -1;
- }
-
- key = ltdb_key(module, lock_dn);
- if (!key.dptr) {
- talloc_free(lock_dn);
- return -1;
- }
-
- ret = tdb_chainlock(ltdb->tdb, key);
-
- talloc_free(key.dptr);
- talloc_free(lock_dn);
-
- return ret;
-}
-
-/*
- unlock the database after a ltdb_lock()
-*/
-static int ltdb_unlock(struct ldb_module *module, const char *lockname)
-{
- struct ltdb_private *ltdb = module->private_data;
- char *lock_dn;
- TDB_DATA key;
-
- if (lockname == NULL) {
- return -1;
- }
-
- lock_dn = talloc_asprintf(module->ldb, "%s_%s", LDBLOCK, lockname);
- if (lock_dn == NULL) {
- return -1;
- }
-
- key = ltdb_key(module, lock_dn);
- if (!key.dptr) {
- talloc_free(lock_dn);
- return -1;
- }
-
- tdb_chainunlock(ltdb->tdb, key);
-
- talloc_free(key.dptr);
- talloc_free(lock_dn);
-
- return 0;
-}
-
-
-/*
- lock the database for read - use by ltdb_search
-*/
-int ltdb_lock_read(struct ldb_module *module)
-{
- struct ltdb_private *ltdb = module->private_data;
- TDB_DATA key;
- int ret;
- key = ltdb_key(module, LDBLOCK);
- if (!key.dptr) {
- return -1;
- }
- ret = tdb_chainlock_read(ltdb->tdb, key);
- talloc_free(key.dptr);
- return ret;
-}
-
-/*
- unlock the database after a ltdb_lock_read()
-*/
-int ltdb_unlock_read(struct ldb_module *module)
-{
- struct ltdb_private *ltdb = module->private_data;
- TDB_DATA key;
- key = ltdb_key(module, LDBLOCK);
- if (!key.dptr) {
- return -1;
- }
- tdb_chainunlock_read(ltdb->tdb, key);
- talloc_free(key.dptr);
- return 0;
-}
-
/*
check special dn's have valid attributes
currently only @ATTRIBUTES is checked
*/
-int ltdb_check_special_dn(struct ldb_module *module, const struct ldb_message *msg)
+static int ltdb_check_special_dn(struct ldb_module *module,
+ const struct ldb_message *msg)
{
- struct ltdb_private *ltdb = module->private_data;
int i, j;
- if (strcmp(msg->dn, LTDB_ATTRIBUTES) != 0) {
+ if (! ldb_dn_is_special(msg->dn) ||
+ ! ldb_dn_check_special(msg->dn, LTDB_ATTRIBUTES)) {
return 0;
}
for (i = 0; i < msg->num_elements; i++) {
for (j = 0; j < msg->elements[i].num_values; j++) {
if (ltdb_check_at_attributes_values(&msg->elements[i].values[j]) != 0) {
- ltdb->last_err_string = "Invalid attribute value in an @ATTRIBUTES entry";
- return -1;
+ ldb_set_errstring(module->ldb, "Invalid attribute value in an @ATTRIBUTES entry");
+ return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
}
}
}
/*
- we've made a modification to a dn - possibly reindex and
+ we've made a modification to a dn - possibly reindex and
update sequence number
*/
-static int ltdb_modified(struct ldb_module *module, const char *dn)
+static int ltdb_modified(struct ldb_module *module, struct ldb_dn *dn)
{
- int ret = 0;
+ int ret = LDB_SUCCESS;
- if (strcmp(dn, LTDB_INDEXLIST) == 0 ||
- strcmp(dn, LTDB_ATTRIBUTES) == 0) {
+ if (ldb_dn_is_special(dn) &&
+ (ldb_dn_check_special(dn, LTDB_INDEXLIST) ||
+ ldb_dn_check_special(dn, LTDB_ATTRIBUTES)) ) {
ret = ltdb_reindex(module);
}
- if (ret == 0 &&
- strcmp(dn, LTDB_BASEINFO) != 0) {
+ if (ret == LDB_SUCCESS &&
+ !(ldb_dn_is_special(dn) &&
+ ldb_dn_check_special(dn, LTDB_BASEINFO)) ) {
ret = ltdb_increase_sequence_number(module);
}
*/
int ltdb_store(struct ldb_module *module, const struct ldb_message *msg, int flgs)
{
- struct ltdb_private *ltdb = module->private_data;
+ struct ltdb_private *ltdb =
+ talloc_get_type(module->private_data, struct ltdb_private);
TDB_DATA tdb_key, tdb_data;
int ret;
tdb_key = ltdb_key(module, msg->dn);
if (!tdb_key.dptr) {
- return -1;
+ return LDB_ERR_OTHER;
}
ret = ltdb_pack_data(module, msg, &tdb_data);
if (ret == -1) {
talloc_free(tdb_key.dptr);
- return -1;
+ return LDB_ERR_OTHER;
}
ret = tdb_store(ltdb->tdb, tdb_key, tdb_data, flgs);
if (ret == -1) {
+ ret = ltdb_err_map(tdb_error(ltdb->tdb));
goto done;
}
-
+
ret = ltdb_index_add(module, msg);
- if (ret == -1) {
+ if (ret != LDB_SUCCESS) {
tdb_delete(ltdb->tdb, tdb_key);
}
}
-/*
- add a record to the database
-*/
-static int ltdb_add(struct ldb_module *module, const struct ldb_message *msg)
+static int ltdb_add_internal(struct ldb_module *module,
+ const struct ldb_message *msg)
{
- struct ltdb_private *ltdb = module->private_data;
int ret;
- ltdb->last_err_string = NULL;
-
ret = ltdb_check_special_dn(module, msg);
- if (ret != 0) {
+ if (ret != LDB_SUCCESS) {
return ret;
}
-
- if (ltdb_lock(module, LDBLOCK) != 0) {
- return -1;
- }
if (ltdb_cache_load(module) != 0) {
- ltdb_unlock(module, LDBLOCK);
- return -1;
+ return LDB_ERR_OPERATIONS_ERROR;
}
ret = ltdb_store(module, msg, TDB_INSERT);
- if (ret == 0) {
- ltdb_modified(module, msg->dn);
+ if (ret == LDB_ERR_ENTRY_ALREADY_EXISTS) {
+ ldb_asprintf_errstring(module->ldb,
+ "Entry %s already exists",
+ ldb_dn_get_linearized(msg->dn));
+ return ret;
+ }
+
+ if (ret == LDB_SUCCESS) {
+ ret = ltdb_index_one(module, msg, 1);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ ret = ltdb_modified(module, msg->dn);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
}
- ltdb_unlock(module, LDBLOCK);
return ret;
}
+/*
+ add a record to the database
+*/
+static int ltdb_add(struct ltdb_context *ctx)
+{
+ struct ldb_module *module = ctx->module;
+ struct ldb_request *req = ctx->req;
+ int tret;
+
+ req->handle->state = LDB_ASYNC_PENDING;
+
+ tret = ltdb_add_internal(module, req->op.add.message);
+ if (tret != LDB_SUCCESS) {
+ return tret;
+ }
+
+ return LDB_SUCCESS;
+}
/*
delete a record from the database, not updating indexes (used for deleting
index records)
*/
-int ltdb_delete_noindex(struct ldb_module *module, const char *dn)
+int ltdb_delete_noindex(struct ldb_module *module, struct ldb_dn *dn)
{
- struct ltdb_private *ltdb = module->private_data;
+ struct ltdb_private *ltdb =
+ talloc_get_type(module->private_data, struct ltdb_private);
TDB_DATA tdb_key;
int ret;
tdb_key = ltdb_key(module, dn);
if (!tdb_key.dptr) {
- return -1;
+ return LDB_ERR_OTHER;
}
ret = tdb_delete(ltdb->tdb, tdb_key);
talloc_free(tdb_key.dptr);
+ if (ret != 0) {
+ ret = ltdb_err_map(tdb_error(ltdb->tdb));
+ }
+
return ret;
}
-/*
- delete a record from the database
-*/
-static int ltdb_delete(struct ldb_module *module, const char *dn)
+static int ltdb_delete_internal(struct ldb_module *module, struct ldb_dn *dn)
{
- struct ltdb_private *ltdb = module->private_data;
+ struct ldb_message *msg;
int ret;
- struct ldb_message *msg = NULL;
-
- ltdb->last_err_string = NULL;
-
- if (ltdb_lock(module, LDBLOCK) != 0) {
- return -1;
- }
-
- if (ltdb_cache_load(module) != 0) {
- goto failed;
- }
msg = talloc(module, struct ldb_message);
if (msg == NULL) {
- goto failed;
+ return LDB_ERR_OPERATIONS_ERROR;
}
/* in case any attribute of the message was indexed, we need
to fetch the old record */
ret = ltdb_search_dn1(module, dn, msg);
- if (ret != 1) {
+ if (ret != LDB_SUCCESS) {
/* not finding the old record is an error */
- goto failed;
+ goto done;
}
ret = ltdb_delete_noindex(module, dn);
- if (ret == -1) {
- goto failed;
+ if (ret != LDB_SUCCESS) {
+ goto done;
+ }
+
+ /* remove one level attribute */
+ ret = ltdb_index_one(module, msg, 0);
+ if (ret != LDB_SUCCESS) {
+ goto done;
}
/* remove any indexed attributes */
ret = ltdb_index_del(module, msg);
+ if (ret != LDB_SUCCESS) {
+ goto done;
+ }
- if (ret == 0) {
- ltdb_modified(module, dn);
+ ret = ltdb_modified(module, dn);
+ if (ret != LDB_SUCCESS) {
+ goto done;
}
+done:
talloc_free(msg);
- ltdb_unlock(module, LDBLOCK);
return ret;
-
-failed:
- talloc_free(msg);
- ltdb_unlock(module, LDBLOCK);
- return -1;
}
+/*
+ delete a record from the database
+*/
+static int ltdb_delete(struct ltdb_context *ctx)
+{
+ struct ldb_module *module = ctx->module;
+ struct ldb_request *req = ctx->req;
+ int tret;
+
+ req->handle->state = LDB_ASYNC_PENDING;
+
+ if (ltdb_cache_load(module) != 0) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ tret = ltdb_delete_internal(module, req->op.del.dn);
+ if (tret != LDB_SUCCESS) {
+ return tret;
+ }
+
+ return LDB_SUCCESS;
+}
/*
- find an element by attribute name. At the moment this does a linear search, it should
- be re-coded to use a binary search once all places that modify records guarantee
- sorted order
+ find an element by attribute name. At the moment this does a linear search,
+ it should be re-coded to use a binary search once all places that modify
+ records guarantee sorted order
return the index of the first matching element if found, otherwise -1
*/
/*
add an element to an existing record. Assumes a elements array that we
- can call re-alloc on, and assumed that we can re-use the data pointers from the
- passed in additional values. Use with care!
+ can call re-alloc on, and assumed that we can re-use the data pointers from
+ the passed in additional values. Use with care!
returns 0 on success, -1 on failure (and sets errno)
*/
static int msg_add_element(struct ldb_context *ldb,
- struct ldb_message *msg, struct ldb_message_element *el)
+ struct ldb_message *msg,
+ struct ldb_message_element *el)
{
struct ldb_message_element *e2;
unsigned int i;
- e2 = talloc_realloc(msg, msg->elements, struct ldb_message_element,
+ e2 = talloc_realloc(msg, msg->elements, struct ldb_message_element,
msg->num_elements+1);
if (!e2) {
errno = ENOMEM;
e2->flags = el->flags;
e2->values = NULL;
if (el->num_values != 0) {
- e2->values = talloc_array(msg->elements, struct ldb_val, el->num_values);
+ e2->values = talloc_array(msg->elements,
+ struct ldb_val, el->num_values);
if (!e2->values) {
errno = ENOMEM;
return -1;
struct ldb_context *ldb,
struct ldb_message *msg, const char *name)
{
+ const char *dn;
unsigned int i, j;
+ dn = ldb_dn_get_linearized(msg->dn);
+ if (dn == NULL) {
+ return -1;
+ }
+
for (i=0;i<msg->num_elements;i++) {
if (ldb_attr_cmp(msg->elements[i].name, name) == 0) {
for (j=0;j<msg->elements[i].num_values;j++) {
- ltdb_index_del_value(module, msg->dn, &msg->elements[i], j);
+ ltdb_index_del_value(module, dn,
+ &msg->elements[i], j);
}
talloc_free(msg->elements[i].values);
if (msg->num_elements > (i+1)) {
- memmove(&msg->elements[i],
- &msg->elements[i+1],
+ memmove(&msg->elements[i],
+ &msg->elements[i+1],
sizeof(struct ldb_message_element)*
(msg->num_elements - (i+1)));
}
msg->num_elements--;
i--;
- msg->elements = talloc_realloc(msg, msg->elements,
- struct ldb_message_element,
- msg->num_elements);
+ msg->elements = talloc_realloc(msg, msg->elements,
+ struct ldb_message_element,
+ msg->num_elements);
}
}
}
/*
- delete all elements matching an attribute name/value
+ delete all elements matching an attribute name/value
return 0 on success, -1 on failure
*/
static int msg_delete_element(struct ldb_module *module,
- struct ldb_message *msg,
+ struct ldb_message *msg,
const char *name,
const struct ldb_val *val)
{
unsigned int i;
int found;
struct ldb_message_element *el;
- const struct ldb_attrib_handler *h;
+ const struct ldb_schema_attribute *a;
found = find_element(msg, name);
if (found == -1) {
el = &msg->elements[found];
- h = ldb_attrib_handler(ldb, el->name);
+ a = ldb_schema_attribute_by_name(ldb, el->name);
for (i=0;i<el->num_values;i++) {
- if (h->comparison_fn(ldb, ldb, &el->values[i], val) == 0) {
+ if (a->syntax->comparison_fn(ldb, ldb,
+ &el->values[i], val) == 0) {
if (i<el->num_values-1) {
memmove(&el->values[i], &el->values[i+1],
- sizeof(el->values[i])*(el->num_values-(i+1)));
+ sizeof(el->values[i])*
+ (el->num_values-(i+1)));
}
el->num_values--;
if (el->num_values == 0) {
- return msg_delete_attribute(module, ldb, msg, name);
+ return msg_delete_attribute(module, ldb,
+ msg, name);
}
return 0;
}
modify a record - internal interface
yuck - this is O(n^2). Luckily n is usually small so we probably
- get away with it, but if we ever have really large attribute lists
+ get away with it, but if we ever have really large attribute lists
then we'll need to look at this again
*/
-int ltdb_modify_internal(struct ldb_module *module, const struct ldb_message *msg)
+int ltdb_modify_internal(struct ldb_module *module,
+ const struct ldb_message *msg)
{
struct ldb_context *ldb = module->ldb;
- struct ltdb_private *ltdb = module->private_data;
+ struct ltdb_private *ltdb =
+ talloc_get_type(module->private_data, struct ltdb_private);
TDB_DATA tdb_key, tdb_data;
struct ldb_message *msg2;
unsigned i, j;
- int ret;
+ int ret, idx;
tdb_key = ltdb_key(module, msg->dn);
if (!tdb_key.dptr) {
- return -1;
+ return LDB_ERR_OTHER;
}
tdb_data = tdb_fetch(ltdb->tdb, tdb_key);
if (!tdb_data.dptr) {
talloc_free(tdb_key.dptr);
- return -1;
+ return ltdb_err_map(tdb_error(ltdb->tdb));
}
msg2 = talloc(tdb_key.dptr, struct ldb_message);
if (msg2 == NULL) {
talloc_free(tdb_key.dptr);
- return -1;
+ return LDB_ERR_OTHER;
}
ret = ltdb_unpack_data(module, &tdb_data, msg2);
if (ret == -1) {
- talloc_free(tdb_key.dptr);
- free(tdb_data.dptr);
- return -1;
+ ret = LDB_ERR_OTHER;
+ goto failed;
}
if (!msg2->dn) {
struct ldb_message_element *el = &msg->elements[i];
struct ldb_message_element *el2;
struct ldb_val *vals;
+ const char *dn;
switch (msg->elements[i].flags & LDB_FLAG_MOD_MASK) {
case LDB_FLAG_MOD_ADD:
/* add this element to the message. fail if it
already exists */
- ret = find_element(msg2, el->name);
+ idx = find_element(msg2, el->name);
- if (ret == -1) {
+ if (idx == -1) {
if (msg_add_element(ldb, msg2, el) != 0) {
+ ret = LDB_ERR_OTHER;
goto failed;
}
continue;
}
- el2 = &msg2->elements[ret];
+ el2 = &msg2->elements[idx];
- /* An attribute with this name already exists, add all
- * values if they don't already exist. */
+ /* An attribute with this name already exists,
+ * add all values if they don't already exist
+ * (check both the other elements to be added,
+ * and those already in the db). */
for (j=0;j<el->num_values;j++) {
if (ldb_msg_find_val(el2, &el->values[j])) {
- ltdb->last_err_string =
- "Type or value exists";
+ ldb_asprintf_errstring(module->ldb, "%s: value #%d already exists", el->name, j);
+ ret = LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
+ goto failed;
+ }
+ if (ldb_msg_find_val(el, &el->values[j]) != &el->values[j]) {
+ ldb_asprintf_errstring(module->ldb, "%s: value #%d provided more than once", el->name, j);
+ ret = LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
goto failed;
}
}
vals = talloc_realloc(msg2->elements, el2->values, struct ldb_val,
el2->num_values + el->num_values);
- if (vals == NULL)
+ if (vals == NULL) {
+ ret = LDB_ERR_OTHER;
goto failed;
+ }
for (j=0;j<el->num_values;j++) {
vals[el2->num_values + j] =
case LDB_FLAG_MOD_REPLACE:
/* replace all elements of this attribute name with the elements
listed. The attribute not existing is not an error */
- msg_delete_attribute(module, ldb, msg2, msg->elements[i].name);
+ msg_delete_attribute(module, ldb, msg2, el->name);
+
+ for (j=0;j<el->num_values;j++) {
+ if (ldb_msg_find_val(el, &el->values[j]) != &el->values[j]) {
+ ldb_asprintf_errstring(module->ldb, "%s: value #%d provided more than once", el->name, j);
+ ret = LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
+ goto failed;
+ }
+ }
/* add the replacement element, if not empty */
- if (msg->elements[i].num_values != 0 &&
- msg_add_element(ldb, msg2, &msg->elements[i]) != 0) {
+ if (el->num_values != 0 &&
+ msg_add_element(ldb, msg2, el) != 0) {
+ ret = LDB_ERR_OTHER;
goto failed;
}
break;
case LDB_FLAG_MOD_DELETE:
+
+ dn = ldb_dn_get_linearized(msg->dn);
+ if (dn == NULL) {
+ ret = LDB_ERR_OTHER;
+ goto failed;
+ }
+
/* we could be being asked to delete all
values or just some values */
if (msg->elements[i].num_values == 0) {
if (msg_delete_attribute(module, ldb, msg2,
msg->elements[i].name) != 0) {
- ltdb->last_err_string = "No such attribute";
+ ldb_asprintf_errstring(module->ldb, "No such attribute: %s for delete on %s", msg->elements[i].name, dn);
+ ret = LDB_ERR_NO_SUCH_ATTRIBUTE;
goto failed;
}
break;
msg2,
msg->elements[i].name,
&msg->elements[i].values[j]) != 0) {
- ltdb->last_err_string = "No such attribute";
+ ldb_asprintf_errstring(module->ldb, "No matching attribute value when deleting attribute: %s on %s", msg->elements[i].name, dn);
+ ret = LDB_ERR_NO_SUCH_ATTRIBUTE;
goto failed;
}
- if (ltdb_index_del_value(module, msg->dn, &msg->elements[i], j) != 0) {
+ ret = ltdb_index_del_value(module, dn, &msg->elements[i], j);
+ if (ret != LDB_SUCCESS) {
goto failed;
}
}
break;
default:
- ltdb->last_err_string = "Invalid ldb_modify flags";
+ ldb_asprintf_errstring(module->ldb,
+ "Invalid ldb_modify flags on %s: 0x%x",
+ msg->elements[i].name,
+ msg->elements[i].flags & LDB_FLAG_MOD_MASK);
+ ret = LDB_ERR_PROTOCOL_ERROR;
goto failed;
}
}
- /* we've made all the mods - save the modified record back into the database */
+ /* we've made all the mods
+ * save the modified record back into the database */
ret = ltdb_store(module, msg2, TDB_MODIFY);
+ if (ret != LDB_SUCCESS) {
+ goto failed;
+ }
+
+ ret = ltdb_modified(module, msg->dn);
+ if (ret != LDB_SUCCESS) {
+ goto failed;
+ }
talloc_free(tdb_key.dptr);
free(tdb_data.dptr);
failed:
talloc_free(tdb_key.dptr);
free(tdb_data.dptr);
- return -1;
+ return ret;
}
/*
modify a record
*/
-static int ltdb_modify(struct ldb_module *module, const struct ldb_message *msg)
+static int ltdb_modify(struct ltdb_context *ctx)
{
- struct ltdb_private *ltdb = module->private_data;
- int ret;
+ struct ldb_module *module = ctx->module;
+ struct ldb_request *req = ctx->req;
+ int tret;
- ltdb->last_err_string = NULL;
+ req->handle->state = LDB_ASYNC_PENDING;
- ret = ltdb_check_special_dn(module, msg);
- if (ret != 0) {
- return ret;
- }
-
- if (ltdb_lock(module, LDBLOCK) != 0) {
- return -1;
+ tret = ltdb_check_special_dn(module, req->op.mod.message);
+ if (tret != LDB_SUCCESS) {
+ return tret;
}
if (ltdb_cache_load(module) != 0) {
- ltdb_unlock(module, LDBLOCK);
- return -1;
+ return LDB_ERR_OPERATIONS_ERROR;
}
- ret = ltdb_modify_internal(module, msg);
-
- if (ret == 0) {
- ltdb_modified(module, msg->dn);
+ tret = ltdb_modify_internal(module, req->op.mod.message);
+ if (tret != LDB_SUCCESS) {
+ return tret;
}
- ltdb_unlock(module, LDBLOCK);
-
- return ret;
+ return LDB_SUCCESS;
}
/*
rename a record
*/
-static int ltdb_rename(struct ldb_module *module, const char *olddn, const char *newdn)
+static int ltdb_rename(struct ltdb_context *ctx)
{
- struct ltdb_private *ltdb = module->private_data;
- int ret;
+ struct ldb_module *module = ctx->module;
+ struct ldb_request *req = ctx->req;
struct ldb_message *msg;
- const char *error_str;
+ int tret;
- ltdb->last_err_string = NULL;
+ req->handle->state = LDB_ASYNC_PENDING;
- if (ltdb_lock(module, LDBLOCK) != 0) {
- return -1;
+ if (ltdb_cache_load(ctx->module) != 0) {
+ return LDB_ERR_OPERATIONS_ERROR;
}
- if (ltdb_cache_load(module) != 0) {
- ltdb_unlock(module, LDBLOCK);
- return -1;
- }
-
- msg = talloc(module, struct ldb_message);
+ msg = talloc(ctx, struct ldb_message);
if (msg == NULL) {
- goto failed;
+ return LDB_ERR_OPERATIONS_ERROR;
}
/* in case any attribute of the message was indexed, we need
to fetch the old record */
- ret = ltdb_search_dn1(module, olddn, msg);
- if (ret != 1) {
+ tret = ltdb_search_dn1(module, req->op.rename.olddn, msg);
+ if (tret != LDB_SUCCESS) {
/* not finding the old record is an error */
- goto failed;
+ return tret;
}
- msg->dn = talloc_strdup(msg, newdn);
+ msg->dn = ldb_dn_copy(msg, req->op.rename.newdn);
if (!msg->dn) {
- goto failed;
+ return LDB_ERR_OPERATIONS_ERROR;
}
- ret = ltdb_add(module, msg);
- if (ret == -1) {
- goto failed;
+ if (ldb_dn_compare(req->op.rename.olddn, req->op.rename.newdn) == 0) {
+ /* The rename operation is apparently only changing case -
+ the DNs are the same. Delete the old DN before adding
+ the new one to avoid a TDB_ERR_EXISTS error.
+
+ The only drawback to this is that if the delete
+ succeeds but the add fails, we rely on the
+ transaction to roll this all back. */
+ tret = ltdb_delete_internal(module, req->op.rename.olddn);
+ if (tret != LDB_SUCCESS) {
+ return tret;
+ }
+
+ tret = ltdb_add_internal(module, msg);
+ if (tret != LDB_SUCCESS) {
+ return tret;
+ }
+ } else {
+ /* The rename operation is changing DNs. Try to add the new
+ DN first to avoid clobbering another DN not related to
+ this rename operation. */
+ tret = ltdb_add_internal(module, msg);
+ if (tret != LDB_SUCCESS) {
+ return tret;
+ }
+
+ tret = ltdb_delete_internal(module, req->op.rename.olddn);
+ if (tret != LDB_SUCCESS) {
+ ltdb_delete_internal(module, req->op.rename.newdn);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
}
- ret = ltdb_delete(module, olddn);
- error_str = ltdb->last_err_string;
- if (ret == -1) {
- ltdb_delete(module, newdn);
+ return LDB_SUCCESS;
+}
+
+static int ltdb_start_trans(struct ldb_module *module)
+{
+ struct ltdb_private *ltdb =
+ talloc_get_type(module->private_data, struct ltdb_private);
+
+ if (tdb_transaction_start(ltdb->tdb) != 0) {
+ return ltdb_err_map(tdb_error(ltdb->tdb));
}
- ltdb->last_err_string = error_str;
+ ltdb->in_transaction++;
- talloc_free(msg);
- ltdb_unlock(module, LDBLOCK);
+ return LDB_SUCCESS;
+}
- return ret;
+static int ltdb_end_trans(struct ldb_module *module)
+{
+ struct ltdb_private *ltdb =
+ talloc_get_type(module->private_data, struct ltdb_private);
-failed:
- talloc_free(msg);
- ltdb_unlock(module, LDBLOCK);
- return -1;
+ ltdb->in_transaction--;
+
+ if (tdb_transaction_commit(ltdb->tdb) != 0) {
+ return ltdb_err_map(tdb_error(ltdb->tdb));
+ }
+
+ return LDB_SUCCESS;
}
+static int ltdb_del_trans(struct ldb_module *module)
+{
+ struct ltdb_private *ltdb =
+ talloc_get_type(module->private_data, struct ltdb_private);
+
+ ltdb->in_transaction--;
+
+ if (tdb_transaction_cancel(ltdb->tdb) != 0) {
+ return ltdb_err_map(tdb_error(ltdb->tdb));
+ }
+
+ return LDB_SUCCESS;
+}
/*
- return extended error information
+ return sequenceNumber from @BASEINFO
*/
-static const char *ltdb_errstring(struct ldb_module *module)
+static int ltdb_sequence_number(struct ltdb_context *ctx,
+ struct ldb_extended **ext)
{
- struct ltdb_private *ltdb = module->private_data;
- if (ltdb->last_err_string) {
- return ltdb->last_err_string;
+ struct ldb_module *module = ctx->module;
+ struct ldb_request *req = ctx->req;
+ TALLOC_CTX *tmp_ctx;
+ struct ldb_seqnum_request *seq;
+ struct ldb_seqnum_result *res;
+ struct ldb_message *msg = NULL;
+ struct ldb_dn *dn;
+ const char *date;
+ int ret;
+
+ seq = talloc_get_type(req->op.extended.data,
+ struct ldb_seqnum_request);
+ if (seq == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
}
- return tdb_errorstr(ltdb->tdb);
+
+ req->handle->state = LDB_ASYNC_PENDING;
+
+ if (ltdb_lock_read(module) != 0) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ res = talloc_zero(req, struct ldb_seqnum_result);
+ if (res == NULL) {
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
+ }
+ tmp_ctx = talloc_new(req);
+ if (tmp_ctx == NULL) {
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
+ }
+
+ dn = ldb_dn_new(tmp_ctx, module->ldb, LTDB_BASEINFO);
+
+ msg = talloc(tmp_ctx, struct ldb_message);
+ if (msg == NULL) {
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
+ }
+
+ ret = ltdb_search_dn1(module, dn, msg);
+ if (ret != LDB_SUCCESS) {
+ goto done;
+ }
+
+ switch (seq->type) {
+ case LDB_SEQ_HIGHEST_SEQ:
+ res->seq_num = ldb_msg_find_attr_as_uint64(msg, LTDB_SEQUENCE_NUMBER, 0);
+ break;
+ case LDB_SEQ_NEXT:
+ res->seq_num = ldb_msg_find_attr_as_uint64(msg, LTDB_SEQUENCE_NUMBER, 0);
+ res->seq_num++;
+ break;
+ case LDB_SEQ_HIGHEST_TIMESTAMP:
+ date = ldb_msg_find_attr_as_string(msg, LTDB_MOD_TIMESTAMP, NULL);
+ if (date) {
+ res->seq_num = ldb_string_to_time(date);
+ } else {
+ res->seq_num = 0;
+ /* zero is as good as anything when we don't know */
+ }
+ break;
+ }
+
+ *ext = talloc_zero(req, struct ldb_extended);
+ if (*ext == NULL) {
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
+ }
+ (*ext)->oid = LDB_EXTENDED_SEQUENCE_NUMBER;
+ (*ext)->data = talloc_steal(*ext, res);
+
+ ret = LDB_SUCCESS;
+
+done:
+ talloc_free(tmp_ctx);
+ ltdb_unlock_read(module);
+ return ret;
}
+static void ltdb_request_done(struct ldb_request *req, int error)
+{
+ struct ldb_reply *ares;
-static const struct ldb_module_ops ltdb_ops = {
- .name = "tdb",
- .search = ltdb_search,
- .search_bytree = ltdb_search_bytree,
- .add_record = ltdb_add,
- .modify_record = ltdb_modify,
- .delete_record = ltdb_delete,
- .rename_record = ltdb_rename,
- .named_lock = ltdb_lock,
- .named_unlock = ltdb_unlock,
- .errstring = ltdb_errstring
-};
+ /* if we already returned an error just return */
+ if (req->handle->status != LDB_SUCCESS) {
+ return;
+ }
+ ares = talloc_zero(req, struct ldb_reply);
+ if (!ares) {
+ ldb_oom(req->handle->ldb);
+ req->callback(req, NULL);
+ return;
+ }
+ ares->type = LDB_REPLY_DONE;
+ ares->error = error;
-/*
- destroy the ltdb context
-*/
-static int ltdb_destructor(void *p)
+ req->callback(req, ares);
+}
+
+static void ltdb_timeout(struct event_context *ev,
+ struct timed_event *te,
+ struct timeval t,
+ void *private_data)
{
- struct ltdb_private *ltdb = p;
- tdb_close(ltdb->tdb);
- return 0;
+ struct ltdb_context *ctx;
+ ctx = talloc_get_type(private_data, struct ltdb_context);
+
+ ltdb_request_done(ctx->req, LDB_ERR_TIME_LIMIT_EXCEEDED);
+}
+
+static void ltdb_request_extended_done(struct ldb_request *req,
+ struct ldb_extended *ext,
+ int error)
+{
+ struct ldb_reply *ares;
+
+ /* if we already returned an error just return */
+ if (req->handle->status != LDB_SUCCESS) {
+ return;
+ }
+
+ ares = talloc_zero(req, struct ldb_reply);
+ if (!ares) {
+ ldb_oom(req->handle->ldb);
+ req->callback(req, NULL);
+ return;
+ }
+ ares->type = LDB_REPLY_DONE;
+ ares->response = ext;
+ ares->error = error;
+
+ req->callback(req, ares);
}
+static void ltdb_handle_extended(struct ltdb_context *ctx)
+{
+ struct ldb_extended *ext = NULL;
+ int ret;
+
+ if (strcmp(ctx->req->op.extended.oid,
+ LDB_EXTENDED_SEQUENCE_NUMBER) == 0) {
+ /* get sequence number */
+ ret = ltdb_sequence_number(ctx, &ext);
+ } else {
+ /* not recognized */
+ ret = LDB_ERR_UNSUPPORTED_CRITICAL_EXTENSION;
+ }
+
+ ltdb_request_extended_done(ctx->req, ext, ret);
+}
+
+static void ltdb_callback(struct event_context *ev,
+ struct timed_event *te,
+ struct timeval t,
+ void *private_data)
+{
+ struct ltdb_context *ctx;
+ int ret;
+
+ ctx = talloc_get_type(private_data, struct ltdb_context);
+
+ switch (ctx->req->operation) {
+ case LDB_SEARCH:
+ ret = ltdb_search(ctx);
+ break;
+ case LDB_ADD:
+ ret = ltdb_add(ctx);
+ break;
+ case LDB_MODIFY:
+ ret = ltdb_modify(ctx);
+ break;
+ case LDB_DELETE:
+ ret = ltdb_delete(ctx);
+ break;
+ case LDB_RENAME:
+ ret = ltdb_rename(ctx);
+ break;
+ case LDB_EXTENDED:
+ ltdb_handle_extended(ctx);
+ return;
+ default:
+ /* no other op supported */
+ ret = LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+
+ if (!ctx->callback_failed) {
+ /* Once we are done, we do not need timeout events */
+ talloc_free(ctx->timeout_event);
+ ltdb_request_done(ctx->req, ret);
+ }
+}
+
+static int ltdb_handle_request(struct ldb_module *module,
+ struct ldb_request *req)
+{
+ struct event_context *ev;
+ struct ltdb_context *ac;
+ struct timed_event *te;
+ struct timeval tv;
+
+ if (check_critical_controls(req->controls)) {
+ return LDB_ERR_UNSUPPORTED_CRITICAL_EXTENSION;
+ }
+
+ if (req->starttime == 0 || req->timeout == 0) {
+ ldb_set_errstring(module->ldb, "Invalid timeout settings");
+ return LDB_ERR_TIME_LIMIT_EXCEEDED;
+ }
+
+ ev = ldb_get_event_context(module->ldb);
+
+ ac = talloc_zero(req, struct ltdb_context);
+ if (ac == NULL) {
+ ldb_set_errstring(module->ldb, "Out of Memory");
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ac->module = module;
+ ac->req = req;
+
+ tv.tv_sec = 0;
+ tv.tv_usec = 0;
+ te = event_add_timed(ev, ac, tv, ltdb_callback, ac);
+ if (NULL == te) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ tv.tv_sec = req->starttime + req->timeout;
+ ac->timeout_event = event_add_timed(ev, ac, tv, ltdb_timeout, ac);
+ if (NULL == ac->timeout_event) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ return LDB_SUCCESS;
+}
+
+static const struct ldb_module_ops ltdb_ops = {
+ .name = "tdb",
+ .search = ltdb_handle_request,
+ .add = ltdb_handle_request,
+ .modify = ltdb_handle_request,
+ .del = ltdb_handle_request,
+ .rename = ltdb_handle_request,
+ .extended = ltdb_handle_request,
+ .start_transaction = ltdb_start_trans,
+ .end_transaction = ltdb_end_trans,
+ .del_transaction = ltdb_del_trans,
+};
+
/*
connect to the database
*/
-int ltdb_connect(struct ldb_context *ldb, const char *url,
- unsigned int flags, const char *options[])
+static int ltdb_connect(struct ldb_context *ldb, const char *url,
+ unsigned int flags, const char *options[],
+ struct ldb_module **module)
{
const char *path;
int tdb_flags, open_flags;
struct ltdb_private *ltdb;
- TDB_CONTEXT *tdb;
/* parse the url */
if (strchr(url, ':')) {
if (strncmp(url, "tdb://", 6) != 0) {
- ldb_debug(ldb, LDB_DEBUG_ERROR, "Invalid tdb URL '%s'", url);
+ ldb_debug(ldb, LDB_DEBUG_ERROR,
+ "Invalid tdb URL '%s'", url);
return -1;
}
path = url+6;
path = url;
}
- tdb_flags = TDB_DEFAULT;
+ tdb_flags = TDB_DEFAULT | TDB_SEQNUM;
+
+ /* check for the 'nosync' option */
+ if (flags & LDB_FLG_NOSYNC) {
+ tdb_flags |= TDB_NOSYNC;
+ }
+
+ /* and nommap option */
+ if (flags & LDB_FLG_NOMMAP) {
+ tdb_flags |= TDB_NOMMAP;
+ }
if (flags & LDB_FLG_RDONLY) {
open_flags = O_RDONLY;
open_flags = O_CREAT | O_RDWR;
}
- /* note that we use quite a large default hash size */
- tdb = tdb_open(path, 10000, tdb_flags, open_flags, 0666);
- if (!tdb) {
- ldb_debug(ldb, LDB_DEBUG_ERROR, "Unable to open tdb '%s'", path);
- return -1;
- }
-
ltdb = talloc_zero(ldb, struct ltdb_private);
if (!ltdb) {
- tdb_close(tdb);
ldb_oom(ldb);
return -1;
}
- ltdb->tdb = tdb;
- ltdb->sequence_number = 0;
+ /* note that we use quite a large default hash size */
+ ltdb->tdb = ltdb_wrap_open(ltdb, path, 10000,
+ tdb_flags, open_flags,
+ ldb->create_perms, ldb);
+ if (!ltdb->tdb) {
+ ldb_debug(ldb, LDB_DEBUG_ERROR,
+ "Unable to open tdb '%s'\n", path);
+ talloc_free(ltdb);
+ return -1;
+ }
- talloc_set_destructor(ltdb, ltdb_destructor);
+ ltdb->sequence_number = 0;
- ldb->modules = talloc(ldb, struct ldb_module);
- if (!ldb->modules) {
+ *module = talloc(ldb, struct ldb_module);
+ if ((*module) == NULL) {
ldb_oom(ldb);
talloc_free(ltdb);
return -1;
}
- ldb->modules->ldb = ldb;
- ldb->modules->prev = ldb->modules->next = NULL;
- ldb->modules->private_data = ltdb;
- ldb->modules->ops = <db_ops;
+ talloc_set_name_const(*module, "ldb_tdb backend");
+ (*module)->ldb = ldb;
+ (*module)->prev = (*module)->next = NULL;
+ (*module)->private_data = ltdb;
+ (*module)->ops = <db_ops;
+
+ if (ltdb_cache_load(*module) != 0) {
+ talloc_free(*module);
+ talloc_free(ltdb);
+ return -1;
+ }
return 0;
}
+
+const struct ldb_backend_ops ldb_tdb_backend_ops = {
+ .name = "tdb",
+ .connect_fn = ltdb_connect
+};
git.samba.org / kai / samba.git / blobdiff