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-rw-r--r--source4/lib/ldb/ldb_tdb/ldb_tdb.c392
1 files changed, 200 insertions, 192 deletions
diff --git a/source4/lib/ldb/ldb_tdb/ldb_tdb.c b/source4/lib/ldb/ldb_tdb/ldb_tdb.c
index 66a10b6413..7693ffeb81 100644
--- a/source4/lib/ldb/ldb_tdb/ldb_tdb.c
+++ b/source4/lib/ldb/ldb_tdb/ldb_tdb.c
@@ -1,10 +1,10 @@
/*
ldb database library
- Copyright (C) Andrew Tridgell 2004
- Copyright (C) Stefan Metzmacher 2004
- Copyright (C) Simo Sorce 2006-2008
-
+ Copyright (C) Andrew Tridgell 2004
+ Copyright (C) Stefan Metzmacher 2004
+ Copyright (C) Simo Sorce 2006-2008
+ Copyright (C) Matthias Dieter Wallnöfer 2009
** NOTE! The following LGPL license applies to the ldb
** library. This does NOT imply that all of Samba is released
@@ -43,6 +43,10 @@
* - description: make it possible to use event contexts
* date: Jan 2008
* Author: Simo Sorce
+ *
+ * - description: fix up memory leaks and small bugs
+ * date: Oct 2009
+ * Author: Matthias Dieter Wallnöfer
*/
#include "ldb_tdb.h"
@@ -169,7 +173,7 @@ static int ltdb_check_special_dn(struct ldb_module *module,
if (! ldb_dn_is_special(msg->dn) ||
! ldb_dn_check_special(msg->dn, LTDB_ATTRIBUTES)) {
- return 0;
+ return LDB_SUCCESS;
}
/* we have @ATTRIBUTES, let's check attributes are fine */
@@ -183,7 +187,7 @@ static int ltdb_check_special_dn(struct ldb_module *module,
}
}
- return 0;
+ return LDB_SUCCESS;
}
@@ -218,7 +222,7 @@ int ltdb_store(struct ldb_module *module, const struct ldb_message *msg, int flg
void *data = ldb_module_get_private(module);
struct ltdb_private *ltdb = talloc_get_type(data, struct ltdb_private);
TDB_DATA tdb_key, tdb_data;
- int ret;
+ int ret = LDB_SUCCESS;
tdb_key = ltdb_key(module, msg->dn);
if (!tdb_key.dptr) {
@@ -254,15 +258,16 @@ static int ltdb_add_internal(struct ldb_module *module,
const struct ldb_message *msg)
{
struct ldb_context *ldb = ldb_module_get_ctx(module);
- int ret, i;
+ int ret = LDB_SUCCESS, i;
ret = ltdb_check_special_dn(module, msg);
if (ret != LDB_SUCCESS) {
- return ret;
+ goto done;
}
if (ltdb_cache_load(module) != 0) {
- return LDB_ERR_OPERATIONS_ERROR;
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
}
for (i=0;i<msg->num_elements;i++) {
@@ -272,38 +277,40 @@ static int ltdb_add_internal(struct ldb_module *module,
if (el->num_values == 0) {
ldb_asprintf_errstring(ldb, "attribute %s on %s specified, but with 0 values (illegal)",
el->name, ldb_dn_get_linearized(msg->dn));
- return LDB_ERR_CONSTRAINT_VIOLATION;
+ ret = LDB_ERR_CONSTRAINT_VIOLATION;
+ goto done;
}
if (a && a->flags & LDB_ATTR_FLAG_SINGLE_VALUE) {
if (el->num_values > 1) {
- ldb_asprintf_errstring(ldb, "SINGLE-VALUE attribute %s on %s speicified more than once",
+ ldb_asprintf_errstring(ldb, "SINGLE-VALUE attribute %s on %s specified more than once",
el->name, ldb_dn_get_linearized(msg->dn));
- return LDB_ERR_CONSTRAINT_VIOLATION;
+ ret = LDB_ERR_CONSTRAINT_VIOLATION;
+ goto done;
}
}
}
ret = ltdb_store(module, msg, TDB_INSERT);
-
- if (ret == LDB_ERR_ENTRY_ALREADY_EXISTS) {
- ldb_asprintf_errstring(ldb,
- "Entry %s already exists",
- ldb_dn_get_linearized(msg->dn));
- return ret;
+ if (ret != LDB_SUCCESS) {
+ if (ret == LDB_ERR_ENTRY_ALREADY_EXISTS) {
+ ldb_asprintf_errstring(ldb,
+ "Entry %s already exists",
+ ldb_dn_get_linearized(msg->dn));
+ }
+ goto done;
}
- if (ret == LDB_SUCCESS) {
- ret = ltdb_index_one(module, msg, 1);
- if (ret != LDB_SUCCESS) {
- return ret;
- }
+ ret = ltdb_index_one(module, msg, 1);
+ if (ret != LDB_SUCCESS) {
+ goto done;
+ }
- ret = ltdb_modified(module, msg->dn);
- if (ret != LDB_SUCCESS) {
- return ret;
- }
+ ret = ltdb_modified(module, msg->dn);
+ if (ret != LDB_SUCCESS) {
+ goto done;
}
+done:
return ret;
}
@@ -314,16 +321,17 @@ static int ltdb_add(struct ltdb_context *ctx)
{
struct ldb_module *module = ctx->module;
struct ldb_request *req = ctx->req;
- int tret;
+ int ret = LDB_SUCCESS;
ldb_request_set_state(req, LDB_ASYNC_PENDING);
- tret = ltdb_add_internal(module, req->op.add.message);
- if (tret != LDB_SUCCESS) {
- return tret;
+ if (ltdb_cache_load(module) != 0) {
+ return LDB_ERR_OPERATIONS_ERROR;
}
- return LDB_SUCCESS;
+ ret = ltdb_add_internal(module, req->op.add.message);
+
+ return ret;
}
/*
@@ -355,7 +363,7 @@ int ltdb_delete_noindex(struct ldb_module *module, struct ldb_dn *dn)
static int ltdb_delete_internal(struct ldb_module *module, struct ldb_dn *dn)
{
struct ldb_message *msg;
- int ret;
+ int ret = LDB_SUCCESS;
msg = talloc(module, struct ldb_message);
if (msg == NULL) {
@@ -404,7 +412,7 @@ static int ltdb_delete(struct ltdb_context *ctx)
{
struct ldb_module *module = ctx->module;
struct ldb_request *req = ctx->req;
- int tret;
+ int ret = LDB_SUCCESS;
ldb_request_set_state(req, LDB_ASYNC_PENDING);
@@ -412,12 +420,9 @@ static int ltdb_delete(struct ltdb_context *ctx)
return LDB_ERR_OPERATIONS_ERROR;
}
- tret = ltdb_delete_internal(module, req->op.del.dn);
- if (tret != LDB_SUCCESS) {
- return tret;
- }
+ ret = ltdb_delete_internal(module, req->op.del.dn);
- return LDB_SUCCESS;
+ return ret;
}
/*
@@ -453,6 +458,11 @@ static int msg_add_element(struct ldb_context *ldb,
struct ldb_message_element *e2;
unsigned int i;
+ if (el->num_values == 0) {
+ /* nothing to do here - we don't add empty elements */
+ return 0;
+ }
+
e2 = talloc_realloc(msg, msg->elements, struct ldb_message_element,
msg->num_elements+1);
if (!e2) {
@@ -466,21 +476,18 @@ static int msg_add_element(struct ldb_context *ldb,
e2->name = el->name;
e2->flags = el->flags;
- e2->values = NULL;
- if (el->num_values != 0) {
- e2->values = talloc_array(msg->elements,
- struct ldb_val, el->num_values);
- if (!e2->values) {
- errno = ENOMEM;
- return -1;
- }
+ e2->values = talloc_array(msg->elements,
+ struct ldb_val, el->num_values);
+ if (!e2->values) {
+ errno = ENOMEM;
+ return -1;
}
for (i=0;i<el->num_values;i++) {
e2->values[i] = el->values[i];
}
e2->num_values = el->num_values;
- msg->num_elements++;
+ ++msg->num_elements;
return 0;
}
@@ -516,12 +523,17 @@ static int msg_delete_attribute(struct ldb_module *module,
msg->num_elements--;
i--;
msg->elements = talloc_realloc(msg, msg->elements,
- struct ldb_message_element,
- msg->num_elements);
+ struct ldb_message_element,
+ msg->num_elements);
+
+ /* per definition we find in a canonicalised message an
+ attribute only once. So we are finished here. */
+ return 0;
}
}
- return 0;
+ /* Not found */
+ return -1;
}
/*
@@ -562,10 +574,14 @@ static int msg_delete_element(struct ldb_module *module,
return msg_delete_attribute(module, ldb,
msg, name);
}
+
+ /* per definition we find in a canonicalised message an
+ attribute value only once. So we are finished here */
return 0;
}
}
+ /* Not found */
return -1;
}
@@ -586,7 +602,7 @@ int ltdb_modify_internal(struct ldb_module *module,
TDB_DATA tdb_key, tdb_data;
struct ldb_message *msg2;
unsigned i, j;
- int ret, idx;
+ int ret = LDB_SUCCESS, idx;
tdb_key = ltdb_key(module, msg->dn);
if (!tdb_key.dptr) {
@@ -602,172 +618,174 @@ int ltdb_modify_internal(struct ldb_module *module,
msg2 = talloc(tdb_key.dptr, struct ldb_message);
if (msg2 == NULL) {
free(tdb_data.dptr);
- talloc_free(tdb_key.dptr);
- return LDB_ERR_OTHER;
+ ret = LDB_ERR_OTHER;
+ goto done;
}
ret = ltdb_unpack_data(module, &tdb_data, msg2);
free(tdb_data.dptr);
if (ret == -1) {
ret = LDB_ERR_OTHER;
- goto failed;
+ goto done;
}
if (!msg2->dn) {
msg2->dn = msg->dn;
}
- for (i=0;i<msg->num_elements;i++) {
- struct ldb_message_element *el = &msg->elements[i];
- struct ldb_message_element *el2;
+ for (i=0; i<msg->num_elements; i++) {
+ struct ldb_message_element *el = &msg->elements[i], *el2;
struct ldb_val *vals;
- const char *dn;
const struct ldb_schema_attribute *a = ldb_schema_attribute_by_name(ldb, el->name);
+ const char *dn;
if (ldb_attr_cmp(el->name, "distinguishedName") == 0) {
- ldb_asprintf_errstring(ldb, "it is not permitted to perform a modify on distinguishedName (use rename instead): %s",
+ ldb_asprintf_errstring(ldb, "it is not permitted to perform a modify on 'distinguishedName' (use rename instead): %s",
ldb_dn_get_linearized(msg->dn));
- ret = LDB_ERR_UNWILLING_TO_PERFORM;
- goto failed;
+ ret = LDB_ERR_CONSTRAINT_VIOLATION;
+ goto done;
}
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 */
- idx = find_element(msg2, el->name);
-
if (el->num_values == 0) {
- ldb_asprintf_errstring(ldb, "attribute %s on %s speicified, but with 0 values (illigal)",
- el->name, ldb_dn_get_linearized(msg->dn));
+ ldb_asprintf_errstring(ldb, "attribute %s on %s specified, but with 0 values (illigal)",
+ el->name, ldb_dn_get_linearized(msg->dn));
ret = LDB_ERR_CONSTRAINT_VIOLATION;
- goto failed;
- }
- if (idx == -1) {
- if (a && a->flags & LDB_ATTR_FLAG_SINGLE_VALUE) {
- if (el->num_values > 1) {
- ldb_asprintf_errstring(ldb, "SINGLE-VALUE attribute %s on %s speicified more than once",
- el->name, ldb_dn_get_linearized(msg->dn));
- ret = LDB_ERR_CONSTRAINT_VIOLATION;
- goto failed;
- }
- }
- if (msg_add_element(ldb, msg2, el) != 0) {
- ret = LDB_ERR_OTHER;
- goto failed;
- }
- continue;
+ goto done;
}
- /* If this is an add, then if it already
- * exists in the object, then we violoate the
- * single-value rule */
if (a && a->flags & LDB_ATTR_FLAG_SINGLE_VALUE) {
- ret = LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
- goto failed;
+ if (el->num_values > 1) {
+ ldb_asprintf_errstring(ldb, "SINGLE-VALUE attribute %s on %s specified more than once",
+ el->name, ldb_dn_get_linearized(msg->dn));
+ ret = LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
+ goto done;
+ }
}
- el2 = &msg2->elements[idx];
-
- /* 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])) {
- ldb_asprintf_errstring(ldb, "%s: value #%d already exists", el->name, j);
- ret = LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
- goto failed;
+ /* Checks if element already exists */
+ idx = find_element(msg2, el->name);
+ if (idx == -1) {
+ if (msg_add_element(ldb, msg2, el) != 0) {
+ ret = LDB_ERR_OTHER;
+ goto done;
}
- if (ldb_msg_find_val(el, &el->values[j]) != &el->values[j]) {
- ldb_asprintf_errstring(ldb, "%s: value #%d provided more than once", el->name, j);
+ } else {
+ /* We cannot add another value on a existing one
+ if the attribute is single-valued */
+ if (a && a->flags & LDB_ATTR_FLAG_SINGLE_VALUE) {
+ ldb_asprintf_errstring(ldb, "SINGLE-VALUE attribute %s on %s specified more than once",
+ el->name, ldb_dn_get_linearized(msg->dn));
ret = LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
- goto failed;
+ goto done;
}
- }
- vals = talloc_realloc(msg2->elements, el2->values, struct ldb_val,
- el2->num_values + el->num_values);
+ el2 = &(msg2->elements[idx]);
- if (vals == NULL) {
- ret = LDB_ERR_OTHER;
- goto failed;
- }
+ /* Check that values don't exist yet on multi-
+ valued attributes or aren't provided twice */
+ for (j=0; j<el->num_values; j++) {
+ if (ldb_msg_find_val(el2, &el->values[j]) != NULL) {
+ ldb_asprintf_errstring(ldb, "%s: value #%d already exists", el->name, j);
+ ret = LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
+ goto done;
+ }
+ if (ldb_msg_find_val(el, &el->values[j]) != &el->values[j]) {
+ ldb_asprintf_errstring(ldb, "%s: value #%d provided more than once", el->name, j);
+ ret = LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
+ goto done;
+ }
+ }
- for (j=0;j<el->num_values;j++) {
- vals[el2->num_values + j] =
- ldb_val_dup(vals, &el->values[j]);
- }
+ /* Now combine existing and new values to a new
+ attribute record */
+ vals = talloc_realloc(msg2->elements,
+ el2->values, struct ldb_val,
+ el2->num_values + el->num_values);
+ if (vals == NULL) {
+ ldb_oom(ldb);
+ ret = LDB_ERR_OTHER;
+ goto done;
+ }
+
+ for (j=0; j<el->num_values; j++) {
+ vals[el2->num_values + j] =
+ ldb_val_dup(vals, &el->values[j]);
+ }
- el2->values = vals;
- el2->num_values += el->num_values;
+ el2->values = vals;
+ el2->num_values += el->num_values;
+ }
break;
case LDB_FLAG_MOD_REPLACE:
if (a && a->flags & LDB_ATTR_FLAG_SINGLE_VALUE) {
if (el->num_values > 1) {
- ldb_asprintf_errstring(ldb, "SINGLE-VALUE attribute %s on %s speicified more than once",
- el->name, ldb_dn_get_linearized(msg->dn));
- ret = LDB_ERR_CONSTRAINT_VIOLATION;
- goto failed;
+ ldb_asprintf_errstring(ldb, "SINGLE-VALUE attribute %s on %s specified more than once",
+ el->name, ldb_dn_get_linearized(msg->dn));
+ ret = LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
+ goto done;
}
}
- /* 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, el->name);
- for (j=0;j<el->num_values;j++) {
+ for (j=0; j<el->num_values; j++) {
if (ldb_msg_find_val(el, &el->values[j]) != &el->values[j]) {
ldb_asprintf_errstring(ldb, "%s: value #%d provided more than once", el->name, j);
ret = LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
- goto failed;
+ goto done;
}
}
- /* add the replacement element, if not empty */
- if (el->num_values != 0 &&
- msg_add_element(ldb, msg2, el) != 0) {
+ /* Delete the attribute if it exists in the DB */
+ msg_delete_attribute(module, ldb, msg2, el->name);
+
+ /* Recreate it with the new values */
+ if (msg_add_element(ldb, msg2, el) != 0) {
ret = LDB_ERR_OTHER;
- goto failed;
+ goto done;
}
+
break;
case LDB_FLAG_MOD_DELETE:
-
dn = ldb_dn_get_linearized(msg->dn);
if (dn == NULL) {
ret = LDB_ERR_OTHER;
- goto failed;
+ goto done;
}
- /* 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,
+ /* Delete the whole attribute */
+ if (msg_delete_attribute(module, ldb, msg2,
msg->elements[i].name) != 0) {
- ldb_asprintf_errstring(ldb, "No such attribute: %s for delete on %s", msg->elements[i].name, dn);
+ ldb_asprintf_errstring(ldb, "No such attribute: %s for delete on %s",
+ msg->elements[i].name, dn);
ret = LDB_ERR_NO_SUCH_ATTRIBUTE;
- goto failed;
+ goto done;
}
- break;
- }
- for (j=0;j<msg->elements[i].num_values;j++) {
- if (msg_delete_element(module,
- msg2,
- msg->elements[i].name,
- &msg->elements[i].values[j]) != 0) {
- ldb_asprintf_errstring(ldb, "No matching attribute value when deleting attribute: %s on %s", msg->elements[i].name, dn);
- ret = LDB_ERR_NO_SUCH_ATTRIBUTE;
- goto failed;
- }
- ret = ltdb_index_del_value(module, dn, &msg->elements[i], j);
- if (ret != LDB_SUCCESS) {
- goto failed;
+ } else {
+ /* Delete specified values from an attribute */
+ for (j=0; j < msg->elements[i].num_values; j++) {
+ if (msg_delete_element(module,
+ msg2,
+ msg->elements[i].name,
+ &msg->elements[i].values[j]) != 0) {
+ ldb_asprintf_errstring(ldb, "No matching attribute value when deleting attribute: %s on %s",
+ msg->elements[i].name, dn);
+ ret = LDB_ERR_NO_SUCH_ATTRIBUTE;
+ goto done;
+ }
+
+ ret = ltdb_index_del_value(module, dn,
+ &msg->elements[i], j);
+ if (ret != LDB_SUCCESS) {
+ goto done;
+ }
}
}
+
break;
default:
ldb_asprintf_errstring(ldb,
@@ -775,26 +793,21 @@ int ltdb_modify_internal(struct ldb_module *module,
msg->elements[i].name,
msg->elements[i].flags & LDB_FLAG_MOD_MASK);
ret = LDB_ERR_PROTOCOL_ERROR;
- goto failed;
+ goto done;
}
}
- /* 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;
+ goto done;
}
ret = ltdb_modified(module, msg->dn);
if (ret != LDB_SUCCESS) {
- goto failed;
+ goto done;
}
- talloc_free(tdb_key.dptr);
- return ret;
-
-failed:
+done:
talloc_free(tdb_key.dptr);
return ret;
}
@@ -806,25 +819,22 @@ static int ltdb_modify(struct ltdb_context *ctx)
{
struct ldb_module *module = ctx->module;
struct ldb_request *req = ctx->req;
- int tret;
-
- ldb_request_set_state(req, LDB_ASYNC_PENDING);
+ int ret = LDB_SUCCESS;
- tret = ltdb_check_special_dn(module, req->op.mod.message);
- if (tret != LDB_SUCCESS) {
- return tret;
+ ret = ltdb_check_special_dn(module, req->op.mod.message);
+ if (ret != LDB_SUCCESS) {
+ return ret;
}
+ ldb_request_set_state(req, LDB_ASYNC_PENDING);
+
if (ltdb_cache_load(module) != 0) {
return LDB_ERR_OPERATIONS_ERROR;
}
- tret = ltdb_modify_internal(module, req->op.mod.message);
- if (tret != LDB_SUCCESS) {
- return tret;
- }
+ ret = ltdb_modify_internal(module, req->op.mod.message);
- return LDB_SUCCESS;
+ return ret;
}
/*
@@ -835,7 +845,7 @@ static int ltdb_rename(struct ltdb_context *ctx)
struct ldb_module *module = ctx->module;
struct ldb_request *req = ctx->req;
struct ldb_message *msg;
- int tret;
+ int ret = LDB_SUCCESS;
ldb_request_set_state(req, LDB_ASYNC_PENDING);
@@ -845,37 +855,37 @@ static int ltdb_rename(struct ltdb_context *ctx)
msg = talloc(ctx, struct ldb_message);
if (msg == NULL) {
- return LDB_ERR_OPERATIONS_ERROR;
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
}
/* in case any attribute of the message was indexed, we need
to fetch the old record */
- tret = ltdb_search_dn1(module, req->op.rename.olddn, msg);
- if (tret != LDB_SUCCESS) {
+ ret = ltdb_search_dn1(module, req->op.rename.olddn, msg);
+ if (ret != LDB_SUCCESS) {
/* not finding the old record is an error */
- return tret;
+ goto done;
}
msg->dn = ldb_dn_copy(msg, req->op.rename.newdn);
- if (!msg->dn) {
- return LDB_ERR_OPERATIONS_ERROR;
+ if (msg->dn == NULL) {
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
}
/* Always delete first then add, to avoid conflicts with
* unique indexes. We rely on the transaction to make this
* atomic
*/
- tret = ltdb_delete_internal(module, req->op.rename.olddn);
- if (tret != LDB_SUCCESS) {
- return tret;
+ ret = ltdb_delete_internal(module, req->op.rename.olddn);
+ if (ret != LDB_SUCCESS) {
+ goto done;
}
- tret = ltdb_add_internal(module, msg);
- if (tret != LDB_SUCCESS) {
- return tret;
- }
+ ret = ltdb_add_internal(module, msg);
- return LDB_SUCCESS;
+done:
+ return ret;
}
static int ltdb_start_trans(struct ldb_module *module)
@@ -975,7 +985,7 @@ static int ltdb_sequence_number(struct ltdb_context *ctx,
struct ldb_message *msg = NULL;
struct ldb_dn *dn;
const char *date;
- int ret;
+ int ret = LDB_SUCCESS;
ldb = ldb_module_get_ctx(module);
@@ -1042,8 +1052,6 @@ static int ltdb_sequence_number(struct ltdb_context *ctx,
(*ext)->oid = LDB_EXTENDED_SEQUENCE_NUMBER;
(*ext)->data = talloc_steal(*ext, res);
- ret = LDB_SUCCESS;
-
done:
talloc_free(tmp_ctx);
ltdb_unlock_read(module);
@@ -1228,7 +1236,7 @@ static int ltdb_handle_request(struct ldb_module *module,
ac = talloc_zero(ldb, struct ltdb_context);
if (ac == NULL) {
- ldb_set_errstring(ldb, "Out of Memory");
+ ldb_oom(ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
generated by cgit (git 2.34.1) at 2024-11-23 03:58:51 +0000