wmi-1.3.16 from opsview.com
This commit is contained in:
Are Casilla
@@ -0,0 +1,525 @@
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/*
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ldb database library
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Copyright (C) Andrew Tridgell 2004
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** NOTE! The following LGPL license applies to the ldb
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** library. This does NOT imply that all of Samba is released
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** under the LGPL
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* Name: ldb
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*
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* Component: ldb search functions
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*
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* Description: functions to search ldb+tdb databases
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*
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* Author: Andrew Tridgell
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*/
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#include "includes.h"
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#include "ldb/include/includes.h"
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#include "ldb/ldb_tdb/ldb_tdb.h"
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/*
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add one element to a message
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*/
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static int msg_add_element(struct ldb_message *ret,
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const struct ldb_message_element *el,
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int check_duplicates)
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{
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unsigned int i;
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struct ldb_message_element *e2, *elnew;
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if (check_duplicates && ldb_msg_find_element(ret, el->name)) {
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/* its already there */
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return 0;
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}
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e2 = talloc_realloc(ret, ret->elements, struct ldb_message_element, ret->num_elements+1);
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if (!e2) {
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return -1;
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}
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ret->elements = e2;
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elnew = &e2[ret->num_elements];
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elnew->name = talloc_strdup(ret->elements, el->name);
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if (!elnew->name) {
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return -1;
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}
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if (el->num_values) {
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elnew->values = talloc_array(ret->elements, struct ldb_val, el->num_values);
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if (!elnew->values) {
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return -1;
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}
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} else {
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elnew->values = NULL;
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}
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for (i=0;i<el->num_values;i++) {
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elnew->values[i] = ldb_val_dup(elnew->values, &el->values[i]);
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if (elnew->values[i].length != el->values[i].length) {
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return -1;
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}
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}
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elnew->num_values = el->num_values;
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ret->num_elements++;
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return 0;
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}
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/*
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add the special distinguishedName element
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*/
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static int msg_add_distinguished_name(struct ldb_message *msg)
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{
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struct ldb_message_element el;
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struct ldb_val val;
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int ret;
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el.flags = 0;
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el.name = "distinguishedName";
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el.num_values = 1;
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el.values = &val;
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val.data = (uint8_t *)ldb_dn_alloc_linearized(msg, msg->dn);
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val.length = strlen((char *)val.data);
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ret = msg_add_element(msg, &el, 1);
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return ret;
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}
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/*
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add all elements from one message into another
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*/
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static int msg_add_all_elements(struct ldb_module *module, struct ldb_message *ret,
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const struct ldb_message *msg)
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{
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struct ldb_context *ldb = module->ldb;
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unsigned int i;
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int check_duplicates = (ret->num_elements != 0);
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if (msg_add_distinguished_name(ret) != 0) {
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return -1;
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}
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for (i=0;i<msg->num_elements;i++) {
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const struct ldb_attrib_handler *h;
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h = ldb_attrib_handler(ldb, msg->elements[i].name);
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if (h->flags & LDB_ATTR_FLAG_HIDDEN) {
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continue;
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}
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if (msg_add_element(ret, &msg->elements[i],
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check_duplicates) != 0) {
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return -1;
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}
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}
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return 0;
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}
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/*
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pull the specified list of attributes from a message
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*/
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static struct ldb_message *ltdb_pull_attrs(struct ldb_module *module,
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TALLOC_CTX *mem_ctx,
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const struct ldb_message *msg,
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const char * const *attrs)
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{
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struct ldb_message *ret;
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int i;
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ret = talloc(mem_ctx, struct ldb_message);
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if (!ret) {
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return NULL;
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}
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ret->dn = ldb_dn_copy(ret, msg->dn);
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if (!ret->dn) {
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talloc_free(ret);
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return NULL;
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}
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ret->num_elements = 0;
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ret->elements = NULL;
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if (!attrs) {
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if (msg_add_all_elements(module, ret, msg) != 0) {
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talloc_free(ret);
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return NULL;
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}
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return ret;
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}
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for (i=0;attrs[i];i++) {
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struct ldb_message_element *el;
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if (strcmp(attrs[i], "*") == 0) {
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if (msg_add_all_elements(module, ret, msg) != 0) {
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talloc_free(ret);
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return NULL;
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}
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continue;
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}
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if (ldb_attr_cmp(attrs[i], "distinguishedName") == 0) {
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if (msg_add_distinguished_name(ret) != 0) {
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return NULL;
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}
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continue;
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}
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el = ldb_msg_find_element(msg, attrs[i]);
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if (!el) {
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continue;
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}
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if (msg_add_element(ret, el, 1) != 0) {
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talloc_free(ret);
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return NULL;
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}
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}
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return ret;
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}
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/*
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search the database for a single simple dn, returning all attributes
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in a single message
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return 1 on success, 0 on record-not-found and -1 on error
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*/
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int ltdb_search_dn1(struct ldb_module *module, struct ldb_dn *dn, struct ldb_message *msg)
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{
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struct ltdb_private *ltdb = module->private_data;
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int ret;
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TDB_DATA tdb_key, tdb_data;
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memset(msg, 0, sizeof(*msg));
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/* form the key */
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tdb_key = ltdb_key(module, dn);
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if (!tdb_key.dptr) {
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return -1;
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}
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tdb_data = tdb_fetch(ltdb->tdb, tdb_key);
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talloc_free(tdb_key.dptr);
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if (!tdb_data.dptr) {
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return 0;
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}
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msg->num_elements = 0;
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msg->elements = NULL;
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ret = ltdb_unpack_data(module, &tdb_data, msg);
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free(tdb_data.dptr);
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if (ret == -1) {
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return -1;
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}
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if (!msg->dn) {
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msg->dn = ldb_dn_copy(msg, dn);
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}
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if (!msg->dn) {
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return -1;
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}
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return 1;
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}
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/*
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lock the database for read - use by ltdb_search
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*/
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static int ltdb_lock_read(struct ldb_module *module)
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{
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struct ltdb_private *ltdb = module->private_data;
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return tdb_lockall_read(ltdb->tdb);
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}
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/*
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unlock the database after a ltdb_lock_read()
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*/
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static int ltdb_unlock_read(struct ldb_module *module)
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{
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struct ltdb_private *ltdb = module->private_data;
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return tdb_unlockall_read(ltdb->tdb);
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}
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/*
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add a set of attributes from a record to a set of results
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return 0 on success, -1 on failure
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*/
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int ltdb_add_attr_results(struct ldb_module *module,
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TALLOC_CTX *mem_ctx,
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struct ldb_message *msg,
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const char * const attrs[],
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unsigned int *count,
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struct ldb_message ***res)
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{
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struct ldb_message *msg2;
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struct ldb_message **res2;
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/* pull the attributes that the user wants */
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msg2 = ltdb_pull_attrs(module, mem_ctx, msg, attrs);
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if (!msg2) {
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return -1;
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}
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/* add to the results list */
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res2 = talloc_realloc(mem_ctx, *res, struct ldb_message *, (*count)+2);
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if (!res2) {
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talloc_free(msg2);
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return -1;
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}
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(*res) = res2;
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(*res)[*count] = talloc_move(*res, &msg2);
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(*res)[(*count)+1] = NULL;
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(*count)++;
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return 0;
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}
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/*
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filter the specified list of attributes from a message
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removing not requested attrs.
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*/
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int ltdb_filter_attrs(struct ldb_message *msg, const char * const *attrs)
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{
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int i, keep_all = 0;
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if (attrs) {
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/* check for special attrs */
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for (i = 0; attrs[i]; i++) {
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if (strcmp(attrs[i], "*") == 0) {
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keep_all = 1;
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break;
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}
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if (ldb_attr_cmp(attrs[i], "distinguishedName") == 0) {
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if (msg_add_distinguished_name(msg) != 0) {
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return -1;
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}
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}
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}
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} else {
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keep_all = 1;
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}
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if (keep_all) {
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if (msg_add_distinguished_name(msg) != 0) {
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return -1;
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}
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return 0;
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}
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for (i = 0; i < msg->num_elements; i++) {
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int j, found;
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for (j = 0, found = 0; attrs[j]; j++) {
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if (ldb_attr_cmp(msg->elements[i].name, attrs[j]) == 0) {
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found = 1;
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break;
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}
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}
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if (!found) {
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ldb_msg_remove_attr(msg, msg->elements[i].name);
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i--;
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}
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}
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return 0;
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}
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/*
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search function for a non-indexed search
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*/
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static int search_func(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data, void *state)
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{
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struct ldb_handle *handle = talloc_get_type(state, struct ldb_handle);
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struct ltdb_context *ac = talloc_get_type(handle->private_data, struct ltdb_context);
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struct ldb_reply *ares = NULL;
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int ret;
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if (key.dsize < 4 ||
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strncmp((char *)key.dptr, "DN=", 3) != 0) {
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return 0;
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}
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ares = talloc_zero(ac, struct ldb_reply);
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if (!ares) {
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handle->status = LDB_ERR_OPERATIONS_ERROR;
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handle->state = LDB_ASYNC_DONE;
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return -1;
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}
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ares->message = ldb_msg_new(ares);
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if (!ares->message) {
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handle->status = LDB_ERR_OPERATIONS_ERROR;
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handle->state = LDB_ASYNC_DONE;
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talloc_free(ares);
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return -1;
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}
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/* unpack the record */
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ret = ltdb_unpack_data(ac->module, &data, ares->message);
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if (ret == -1) {
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talloc_free(ares);
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return -1;
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}
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if (!ares->message->dn) {
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ares->message->dn = ldb_dn_new(ares->message, ac->module->ldb, (char *)key.dptr + 3);
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if (ares->message->dn == NULL) {
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handle->status = LDB_ERR_OPERATIONS_ERROR;
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handle->state = LDB_ASYNC_DONE;
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talloc_free(ares);
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return -1;
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}
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}
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/* see if it matches the given expression */
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if (!ldb_match_msg(ac->module->ldb, ares->message, ac->tree,
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ac->base, ac->scope)) {
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talloc_free(ares);
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return 0;
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}
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/* filter the attributes that the user wants */
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ret = ltdb_filter_attrs(ares->message, ac->attrs);
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if (ret == -1) {
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handle->status = LDB_ERR_OPERATIONS_ERROR;
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handle->state = LDB_ASYNC_DONE;
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talloc_free(ares);
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return -1;
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}
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ares->type = LDB_REPLY_ENTRY;
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handle->state = LDB_ASYNC_PENDING;
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handle->status = ac->callback(ac->module->ldb, ac->context, ares);
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if (handle->status != LDB_SUCCESS) {
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/* don't try to free ares here, the callback is in charge of that */
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return -1;
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}
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return 0;
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}
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/*
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search the database with a LDAP-like expression.
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this is the "full search" non-indexed variant
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*/
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static int ltdb_search_full(struct ldb_handle *handle)
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{
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struct ltdb_context *ac = talloc_get_type(handle->private_data, struct ltdb_context);
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struct ltdb_private *ltdb = talloc_get_type(ac->module->private_data, struct ltdb_private);
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int ret;
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ret = tdb_traverse_read(ltdb->tdb, search_func, handle);
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if (ret == -1) {
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handle->status = LDB_ERR_OPERATIONS_ERROR;
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}
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||||
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handle->state = LDB_ASYNC_DONE;
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return LDB_SUCCESS;
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}
|
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|
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/*
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search the database with a LDAP-like expression.
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choses a search method
|
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*/
|
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int ltdb_search(struct ldb_module *module, struct ldb_request *req)
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{
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struct ltdb_private *ltdb = talloc_get_type(module->private_data, struct ltdb_private);
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struct ltdb_context *ltdb_ac;
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struct ldb_reply *ares;
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int ret;
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if ((( ! ldb_dn_is_valid(req->op.search.base)) || ldb_dn_is_null(req->op.search.base)) &&
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(req->op.search.scope == LDB_SCOPE_BASE || req->op.search.scope == LDB_SCOPE_ONELEVEL))
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return LDB_ERR_OPERATIONS_ERROR;
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if (ltdb_lock_read(module) != 0) {
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return LDB_ERR_OPERATIONS_ERROR;
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}
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if (ltdb_cache_load(module) != 0) {
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ltdb_unlock_read(module);
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return LDB_ERR_OPERATIONS_ERROR;
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||||
}
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||||
|
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if (req->op.search.tree == NULL) {
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ltdb_unlock_read(module);
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return LDB_ERR_OPERATIONS_ERROR;
|
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}
|
||||
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||||
req->handle = init_ltdb_handle(ltdb, module, req);
|
||||
if (req->handle == NULL) {
|
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ltdb_unlock_read(module);
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return LDB_ERR_OPERATIONS_ERROR;
|
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}
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ltdb_ac = talloc_get_type(req->handle->private_data, struct ltdb_context);
|
||||
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ltdb_ac->tree = req->op.search.tree;
|
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ltdb_ac->scope = req->op.search.scope;
|
||||
ltdb_ac->base = req->op.search.base;
|
||||
ltdb_ac->attrs = req->op.search.attrs;
|
||||
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ret = ltdb_search_indexed(req->handle);
|
||||
if (ret == -1) {
|
||||
ret = ltdb_search_full(req->handle);
|
||||
}
|
||||
if (ret != LDB_SUCCESS) {
|
||||
ldb_set_errstring(module->ldb, "Indexed and full searches both failed!\n");
|
||||
req->handle->state = LDB_ASYNC_DONE;
|
||||
req->handle->status = ret;
|
||||
}
|
||||
|
||||
/* Finally send an LDB_REPLY_DONE packet when searching is finished */
|
||||
|
||||
ares = talloc_zero(req, struct ldb_reply);
|
||||
if (!ares) {
|
||||
ltdb_unlock_read(module);
|
||||
return LDB_ERR_OPERATIONS_ERROR;
|
||||
}
|
||||
|
||||
req->handle->state = LDB_ASYNC_DONE;
|
||||
ares->type = LDB_REPLY_DONE;
|
||||
|
||||
ret = req->callback(module->ldb, req->context, ares);
|
||||
req->handle->status = ret;
|
||||
|
||||
ltdb_unlock_read(module);
|
||||
|
||||
return LDB_SUCCESS;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user