ldb: make ldb a top level library for Samba 4.0

Signed-off-by: Andrew Tridgell <tridge@samba.org>

1 files changed, 0 insertions, 982 deletions

diff --git a/source4/lib/ldb/ldb_ldap/ldb_ldap.c b/source4/lib/ldb/ldb_ldap/ldb_ldap.c
deleted file mode 100644
index 7e6ac903c8..0000000000
--- a/source4/lib/ldb/ldb_ldap/ldb_ldap.c
+++ /dev/null
@@ -1,982 +0,0 @@
-/* 
-   ldb database library
-
-   Copyright (C) Andrew Tridgell  2004
-   Copyright (C) Simo Sorce       2006
-
-     ** 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 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
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   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, see <http://www.gnu.org/licenses/>.
-*/
-
-/*
- *  Name: ldb_ldap
- *
- *  Component: ldb ldap backend
- *
- *  Description: core files for LDAP backend
- *
- *  Author: Andrew Tridgell
- *
- *  Modifications:
- *
- *  - description: make the module use asynchronous calls
- *    date: Feb 2006
- *    author: Simo Sorce
- */
-
-#include "replace.h"
-#include "system/filesys.h"
-#include "system/time.h"
-#include "ldb_module.h"
-#include "ldb_private.h"
-
-#define LDAP_DEPRECATED 1
-#include <ldap.h>
-
-struct lldb_private {
-	LDAP *ldap;
-};
-
-struct lldb_context {
-	struct ldb_module *module;
-	struct ldb_request *req;
-
-	struct lldb_private *lldb;
-
-	struct ldb_control **controls;
-	int msgid;
-};
-
-static int lldb_ldap_to_ldb(int err) {
-	/* Ldap errors and ldb errors are defined to the same values */
-	return err;
-}
-
-/*
-  convert a ldb_message structure to a list of LDAPMod structures
-  ready for ldap_add() or ldap_modify()
-*/
-static LDAPMod **lldb_msg_to_mods(void *mem_ctx, const struct ldb_message *msg, int use_flags)
-{
-	LDAPMod **mods;
-	unsigned int i, j;
-	int num_mods = 0;
-
-	/* allocate maximum number of elements needed */
-	mods = talloc_array(mem_ctx, LDAPMod *, msg->num_elements+1);
-	if (!mods) {
-		errno = ENOMEM;
-		return NULL;
-	}
-	mods[0] = NULL;
-
-	for (i=0;i<msg->num_elements;i++) {
-		const struct ldb_message_element *el = &msg->elements[i];
-
-		mods[num_mods] = talloc(mods, LDAPMod);
-		if (!mods[num_mods]) {
-			goto failed;
-		}
-		mods[num_mods+1] = NULL;
-		mods[num_mods]->mod_op = LDAP_MOD_BVALUES;
-		if (use_flags) {
-			switch (el->flags & LDB_FLAG_MOD_MASK) {
-			case LDB_FLAG_MOD_ADD:
-				mods[num_mods]->mod_op |= LDAP_MOD_ADD;
-				break;
-			case LDB_FLAG_MOD_DELETE:
-				mods[num_mods]->mod_op |= LDAP_MOD_DELETE;
-				break;
-			case LDB_FLAG_MOD_REPLACE:
-				mods[num_mods]->mod_op |= LDAP_MOD_REPLACE;
-				break;
-			}
-		}
-		mods[num_mods]->mod_type = discard_const_p(char, el->name);
-		mods[num_mods]->mod_vals.modv_bvals = talloc_array(mods[num_mods], 
-								   struct berval *,
-								   1+el->num_values);
-		if (!mods[num_mods]->mod_vals.modv_bvals) {
-			goto failed;
-		}
-
-		for (j=0;j<el->num_values;j++) {
-			mods[num_mods]->mod_vals.modv_bvals[j] = talloc(mods[num_mods]->mod_vals.modv_bvals,
-									struct berval);
-			if (!mods[num_mods]->mod_vals.modv_bvals[j]) {
-				goto failed;
-			}
-			mods[num_mods]->mod_vals.modv_bvals[j]->bv_val = (char *)el->values[j].data;
-			mods[num_mods]->mod_vals.modv_bvals[j]->bv_len = el->values[j].length;
-		}
-		mods[num_mods]->mod_vals.modv_bvals[j] = NULL;
-		num_mods++;
-	}
-
-	return mods;
-
-failed:
-	talloc_free(mods);
-	return NULL;
-}
-
-/*
-  add a single set of ldap message values to a ldb_message
-*/
-static int lldb_add_msg_attr(struct ldb_context *ldb,
-			     struct ldb_message *msg, 
-			     const char *attr, struct berval **bval)
-{
-	int count, i;
-	struct ldb_message_element *el;
-
-	count = ldap_count_values_len(bval);
-
-	if (count <= 0) {
-		return -1;
-	}
-
-	el = talloc_realloc(msg, msg->elements, struct ldb_message_element, 
-			      msg->num_elements + 1);
-	if (!el) {
-		errno = ENOMEM;
-		return -1;
-	}
-
-	msg->elements = el;
-
-	el = &msg->elements[msg->num_elements];
-
-	el->name = talloc_strdup(msg->elements, attr);
-	if (!el->name) {
-		errno = ENOMEM;
-		return -1;
-	}
-	el->flags = 0;
-
-	el->num_values = 0;
-	el->values = talloc_array(msg->elements, struct ldb_val, count);
-	if (!el->values) {
-		errno = ENOMEM;
-		return -1;
-	}
-
-	for (i=0;i<count;i++) {
-		/* we have to ensure this is null terminated so that
-		   ldb_msg_find_attr_as_string() can work */
-		el->values[i].data = talloc_size(el->values, bval[i]->bv_len+1);
-		if (!el->values[i].data) {
-			errno = ENOMEM;
-			return -1;
-		}
-		memcpy(el->values[i].data, bval[i]->bv_val, bval[i]->bv_len);
-		el->values[i].data[bval[i]->bv_len] = 0;
-		el->values[i].length = bval[i]->bv_len;
-		el->num_values++;
-	}
-
-	msg->num_elements++;
-
-	return 0;
-}
-
-/*
-  search for matching records
-*/
-static int lldb_search(struct lldb_context *lldb_ac)
-{
-	struct ldb_context *ldb;
-	struct lldb_private *lldb = lldb_ac->lldb;
-	struct ldb_module *module = lldb_ac->module;
-	struct ldb_request *req = lldb_ac->req;
-	struct timeval tv;
-	int ldap_scope;
-	char *search_base;
-	char *expression;
-	int ret;
-
-	ldb = ldb_module_get_ctx(module);
-
-	if (!req->callback || !req->context) {
-		ldb_set_errstring(ldb, "Async interface called with NULL callback function or NULL context");
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	if (req->op.search.tree == NULL) {
-		ldb_set_errstring(ldb, "Invalid expression parse tree");
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	if (req->controls != NULL) {
-		ldb_debug(ldb, LDB_DEBUG_WARNING, "Controls are not yet supported by ldb_ldap backend!");
-	}
-
-	ldb_request_set_state(req, LDB_ASYNC_PENDING);
-
-	search_base = ldb_dn_alloc_linearized(lldb_ac, req->op.search.base);
-	if (req->op.search.base == NULL) {
-		search_base = talloc_strdup(lldb_ac, "");
-	}
-	if (search_base == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	expression = ldb_filter_from_tree(lldb_ac, req->op.search.tree);
-	if (expression == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	switch (req->op.search.scope) {
-	case LDB_SCOPE_BASE:
-		ldap_scope = LDAP_SCOPE_BASE;
-		break;
-	case LDB_SCOPE_ONELEVEL:
-		ldap_scope = LDAP_SCOPE_ONELEVEL;
-		break;
-	default:
-		ldap_scope = LDAP_SCOPE_SUBTREE;
-		break;
-	}
-
-	tv.tv_sec = req->timeout;
-	tv.tv_usec = 0;
-
-	ret = ldap_search_ext(lldb->ldap, search_base, ldap_scope, 
-			      expression, 
-			      discard_const_p(char *, req->op.search.attrs),
-			      0,
-			      NULL,
-			      NULL,
-			      &tv,
-			      LDAP_NO_LIMIT,
-			      &lldb_ac->msgid);
-
-	if (ret != LDAP_SUCCESS) {
-		ldb_set_errstring(ldb, ldap_err2string(ret));
-	}
-
-	return lldb_ldap_to_ldb(ret);
-}
-
-/*
-  add a record
-*/
-static int lldb_add(struct lldb_context *lldb_ac)
-{
-	struct ldb_context *ldb;
-	struct lldb_private *lldb = lldb_ac->lldb;
-	struct ldb_module *module = lldb_ac->module;
-	struct ldb_request *req = lldb_ac->req;
-	LDAPMod **mods;
-	char *dn;
-	int ret;
-
-	ldb = ldb_module_get_ctx(module);
-
-	ldb_request_set_state(req, LDB_ASYNC_PENDING);
-
-	mods = lldb_msg_to_mods(lldb_ac, req->op.add.message, 0);
-	if (mods == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	dn = ldb_dn_alloc_linearized(lldb_ac, req->op.add.message->dn);
-	if (dn == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	ret = ldap_add_ext(lldb->ldap, dn, mods,
-			   NULL,
-			   NULL,
-			   &lldb_ac->msgid);
-
-	if (ret != LDAP_SUCCESS) {
-		ldb_set_errstring(ldb, ldap_err2string(ret));
-	}
-
-	return lldb_ldap_to_ldb(ret);
-}
-
-/*
-  modify a record
-*/
-static int lldb_modify(struct lldb_context *lldb_ac)
-{
-	struct ldb_context *ldb;
-	struct lldb_private *lldb = lldb_ac->lldb;
-	struct ldb_module *module = lldb_ac->module;
-	struct ldb_request *req = lldb_ac->req;
-	LDAPMod **mods;
-	char *dn;
-	int ret;
-
-	ldb = ldb_module_get_ctx(module);
-
-	ldb_request_set_state(req, LDB_ASYNC_PENDING);
-
-	mods = lldb_msg_to_mods(lldb_ac, req->op.mod.message, 1);
-	if (mods == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	dn = ldb_dn_alloc_linearized(lldb_ac, req->op.mod.message->dn);
-	if (dn == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	ret = ldap_modify_ext(lldb->ldap, dn, mods,
-			      NULL,
-			      NULL,
-			      &lldb_ac->msgid);
-
-	if (ret != LDAP_SUCCESS) {
-		ldb_set_errstring(ldb, ldap_err2string(ret));
-	}
-
-	return lldb_ldap_to_ldb(ret);
-}
-
-/*
-  delete a record
-*/
-static int lldb_delete(struct lldb_context *lldb_ac)
-{
-	struct ldb_context *ldb;
-	struct lldb_private *lldb = lldb_ac->lldb;
-	struct ldb_module *module = lldb_ac->module;
-	struct ldb_request *req = lldb_ac->req;
-	char *dnstr;
-	int ret;
-
-	ldb = ldb_module_get_ctx(module);
-
-	ldb_request_set_state(req, LDB_ASYNC_PENDING);
-
-	dnstr = ldb_dn_alloc_linearized(lldb_ac, req->op.del.dn);
-
-	ret = ldap_delete_ext(lldb->ldap, dnstr,
-			      NULL,
-			      NULL,
-			      &lldb_ac->msgid);
-
-	if (ret != LDAP_SUCCESS) {
-		ldb_set_errstring(ldb, ldap_err2string(ret));
-	}
-
-	return lldb_ldap_to_ldb(ret);
-}
-
-/*
-  rename a record
-*/
-static int lldb_rename(struct lldb_context *lldb_ac)
-{
-	struct ldb_context *ldb;
-	struct lldb_private *lldb = lldb_ac->lldb;
-	struct ldb_module *module = lldb_ac->module;
-	struct ldb_request *req = lldb_ac->req;
-	const char *rdn_name;
-	const struct ldb_val *rdn_val;
-	char *old_dn;
-	char *newrdn;
-	char *parentdn;
-	int ret;
-
-	ldb = ldb_module_get_ctx(module);
-
-	ldb_request_set_state(req, LDB_ASYNC_PENDING);
-
-	old_dn = ldb_dn_alloc_linearized(lldb_ac, req->op.rename.olddn);
-	if (old_dn == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	rdn_name = ldb_dn_get_rdn_name(req->op.rename.newdn);
-	rdn_val = ldb_dn_get_rdn_val(req->op.rename.newdn);
-
-	if ((rdn_name != NULL) && (rdn_val != NULL)) {
-		newrdn = talloc_asprintf(lldb_ac, "%s=%s", rdn_name,
-					 rdn_val->length > 0 ? ldb_dn_escape_value(lldb, *rdn_val) : "");
-	} else {
-		newrdn = talloc_strdup(lldb_ac, "");
-	}
-	if (!newrdn) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	parentdn = ldb_dn_alloc_linearized(lldb_ac, ldb_dn_get_parent(lldb_ac, req->op.rename.newdn));
-	if (!parentdn) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	ret = ldap_rename(lldb->ldap, old_dn, newrdn, parentdn,
-			  1, NULL, NULL,
-			  &lldb_ac->msgid);
-
-	if (ret != LDAP_SUCCESS) {
-		ldb_set_errstring(ldb, ldap_err2string(ret));
-	}
-
-	return lldb_ldap_to_ldb(ret);
-}
-
-static int lldb_start_trans(struct ldb_module *module)
-{
-	/* TODO implement a local transaction mechanism here */
-
-	return LDB_SUCCESS;
-}
-
-static int lldb_end_trans(struct ldb_module *module)
-{
-	/* TODO implement a local transaction mechanism here */
-
-	return LDB_SUCCESS;
-}
-
-static int lldb_del_trans(struct ldb_module *module)
-{
-	/* TODO implement a local transaction mechanism here */
-
-	return LDB_SUCCESS;
-}
-
-static void lldb_request_done(struct lldb_context *ac,
-			struct ldb_control **ctrls, int error)
-{
-	struct ldb_request *req;
-	struct ldb_reply *ares;
-
-	req = ac->req;
-
-	ares = talloc_zero(req, struct ldb_reply);
-	if (!ares) {
-		ldb_oom(ldb_module_get_ctx(ac->module));
-		req->callback(req, NULL);
-		return;
-	}
-	ares->type = LDB_REPLY_DONE;
-	ares->controls = talloc_steal(ares, ctrls);
-	ares->error = error;
-
-	req->callback(req, ares);
-}
-
-/* return false if the request is still in progress
- * return true if the request is completed
- */
-static bool lldb_parse_result(struct lldb_context *ac, LDAPMessage *result)
-{
-	struct ldb_context *ldb;
-	struct lldb_private *lldb = ac->lldb;
-	LDAPControl **serverctrlsp = NULL;
-	char **referralsp = NULL;
-	char *matcheddnp = NULL;
-	char *errmsgp = NULL;
-	LDAPMessage *msg;
-	int type;
-	struct ldb_message *ldbmsg;
-	char *referral;
-	bool callback_failed;
-	bool request_done;
-	bool lret;
-	unsigned int i;
-	int ret;
-
-	ldb = ldb_module_get_ctx(ac->module);
-
-	type = ldap_msgtype(result);
-	callback_failed = false;
-	request_done = false;
-
-	switch (type) {
-	case LDAP_RES_SEARCH_ENTRY:
-
-		msg = ldap_first_entry(lldb->ldap, result);
-	       	if (msg != NULL) {
-			BerElement *berptr = NULL;
-			char *attr, *dn;
-
-			ldbmsg = ldb_msg_new(ac);
-			if (!ldbmsg) {
-				ldb_oom(ldb);
-				ret = LDB_ERR_OPERATIONS_ERROR;
-				break;
-			}
-
-			dn = ldap_get_dn(lldb->ldap, msg);
-			if (!dn) {
-				ldb_oom(ldb);
-				talloc_free(ldbmsg);
-				ret = LDB_ERR_OPERATIONS_ERROR;
-				break;
-			}
-			ldbmsg->dn = ldb_dn_new(ldbmsg, ldb, dn);
-			if ( ! ldb_dn_validate(ldbmsg->dn)) {
-				ldb_asprintf_errstring(ldb, "Invalid DN '%s' in reply", dn);
-				talloc_free(ldbmsg);
-				ret = LDB_ERR_OPERATIONS_ERROR;
-				ldap_memfree(dn);
-				break;
-			}
-			ldap_memfree(dn);
-
-			ldbmsg->num_elements = 0;
-			ldbmsg->elements = NULL;
-
-			/* loop over all attributes */
-			for (attr=ldap_first_attribute(lldb->ldap, msg, &berptr);
-			     attr;
-			     attr=ldap_next_attribute(lldb->ldap, msg, berptr)) {
-				struct berval **bval;
-				bval = ldap_get_values_len(lldb->ldap, msg, attr);
-
-				if (bval) {
-					lldb_add_msg_attr(ldb, ldbmsg, attr, bval);
-					ldap_value_free_len(bval);
-				}
-			}
-			if (berptr) ber_free(berptr, 0);
-
-			ret = ldb_module_send_entry(ac->req, ldbmsg, NULL /* controls not yet supported */);
-			if (ret != LDB_SUCCESS) {
-				ldb_asprintf_errstring(ldb, "entry send failed: %s",
-						       ldb_errstring(ldb));
-				callback_failed = true;
-			}
-		} else {
-			ret = LDB_ERR_OPERATIONS_ERROR;
-		}
-		break;
-
-	case LDAP_RES_SEARCH_REFERENCE:
-
-		ret = ldap_parse_reference(lldb->ldap, result,
-					   &referralsp, &serverctrlsp, 0);
-		if (ret != LDAP_SUCCESS) {
-			ldb_asprintf_errstring(ldb, "ldap reference parse error: %s : %s",
-					       ldap_err2string(ret), errmsgp);
-			ret = LDB_ERR_OPERATIONS_ERROR;
-			break;
-		}
-		if (referralsp == NULL) {
-			ldb_asprintf_errstring(ldb, "empty ldap referrals list");
-			ret = LDB_ERR_PROTOCOL_ERROR;
-			break;
-		}
-
-		for (i = 0; referralsp[i]; i++) {
-			referral = talloc_strdup(ac, referralsp[i]);
-
-			ret = ldb_module_send_referral(ac->req, referral);
-			if (ret != LDB_SUCCESS) {
-				ldb_asprintf_errstring(ldb, "referral send failed: %s",
-						       ldb_errstring(ldb));
-				callback_failed = true;
-				break;
-			}
-		}
-		break;
-
-	case LDAP_RES_SEARCH_RESULT:
-	case LDAP_RES_MODIFY:
-	case LDAP_RES_ADD:
-	case LDAP_RES_DELETE:
-	case LDAP_RES_MODDN:
-
-		if (ldap_parse_result(lldb->ldap, result, &ret,
-					&matcheddnp, &errmsgp,
-					&referralsp, &serverctrlsp, 0) != LDAP_SUCCESS) {
-			ret = LDB_ERR_OPERATIONS_ERROR;
-		}
-		if (ret != LDB_SUCCESS) {
-			ldb_asprintf_errstring(ldb, "ldap parse error for type %d: %s : %s",
-					       type, ldap_err2string(ret), errmsgp);
-			break;
-		}
-
-		if (serverctrlsp != NULL) {
-			/* FIXME: transform the LDAPControl list into an ldb_control one */
-			ac->controls = NULL;
-		}
-
-		request_done = true;
-		break;
-
-	default:
-		ldb_asprintf_errstring(ldb, "unknown ldap return type: %d", type);
-		ret = LDB_ERR_PROTOCOL_ERROR;
-		break;
-	}
-
-	if (ret != LDB_SUCCESS) {
-
-		/* if the callback failed the caller will have freed the
-		 * request. Just return and don't try to use it */
-		if (callback_failed) {
-
-			/* tell lldb_wait to remove the request from the
-			 *  queue */
-			lret = true;
-			goto free_and_return;
-		}
-
-		request_done = true;
-	}
-
-	if (request_done) {
-		lldb_request_done(ac, ac->controls, ret);
-		lret = true;
-		goto free_and_return;
-	}
-
-	lret = false;
-
-free_and_return:
-
-	if (matcheddnp) ldap_memfree(matcheddnp);
-	if (errmsgp && *errmsgp) {
-		ldb_set_errstring(ldb, errmsgp);
-	}
-	if (errmsgp) {
-		ldap_memfree(errmsgp);
-	}
-	if (referralsp) ldap_value_free(referralsp);
-	if (serverctrlsp) ldap_controls_free(serverctrlsp);
-
-	ldap_msgfree(result);
-
-	return lret;
-}
-
-static void lldb_timeout(struct tevent_context *ev,
-			 struct tevent_timer *te,
-			 struct timeval t,
-			 void *private_data)
-{
-	struct lldb_context *ac;
-	ac = talloc_get_type(private_data, struct lldb_context);
-
-	lldb_request_done(ac, NULL, LDB_ERR_TIME_LIMIT_EXCEEDED);
-}
-
-static void lldb_callback(struct tevent_context *ev,
-			  struct tevent_timer *te,
-			  struct timeval t,
-			  void *private_data)
-{
-	struct lldb_context *ac;
-	struct tevent_timer *lte;
-	struct timeval tv;
-	LDAPMessage *result;
-	int lret;
-
-	ac = talloc_get_type(private_data, struct lldb_context);
-
-	if (!ac->msgid) {
-		lldb_request_done(ac, NULL, LDB_ERR_OPERATIONS_ERROR);
-		return;
-	}
-
-	tv.tv_sec = 0;
-	tv.tv_usec = 0;
-	lret = ldap_result(ac->lldb->ldap, ac->msgid, 0, &tv, &result);
-	if (lret == 0) {
-		goto respin;
-	}
-	if (lret == -1) {
-		lldb_request_done(ac, NULL, LDB_ERR_OPERATIONS_ERROR);
-		return;
-	}
-
-	if ( ! lldb_parse_result(ac, result)) {
-		goto respin;
-	}
-
-	return;
-
-respin:
-	tv.tv_sec = 0;
-	tv.tv_usec = 100;
-	lte = tevent_add_timer(ev, ac, tv, lldb_callback, ac);
-	if (NULL == lte) {
-		lldb_request_done(ac, NULL, LDB_ERR_OPERATIONS_ERROR);
-	}
-}
-
-static bool lldb_dn_is_special(struct ldb_request *req)
-{
-	struct ldb_dn *dn = NULL;
-
-	switch (req->operation) {
-	case LDB_ADD:
-		dn = req->op.add.message->dn;
-		break;
-	case LDB_MODIFY:
-		dn = req->op.mod.message->dn;
-		break;
-	case LDB_DELETE:
-		dn = req->op.del.dn;
-		break;
-	case LDB_RENAME:
-		dn = req->op.rename.olddn;
-		break;
-	default:
-		break;
-	}
-
-	if (dn && ldb_dn_is_special(dn)) {
-		return true;
-	}
-	return false;
-}
-
-static void lldb_auto_done_callback(struct tevent_context *ev,
-				    struct tevent_timer *te,
-				    struct timeval t,
-				    void *private_data)
-{
-	struct lldb_context *ac;
-
-	ac = talloc_get_type(private_data, struct lldb_context);
-	lldb_request_done(ac, NULL, LDB_SUCCESS);
-}
-
-static int lldb_handle_request(struct ldb_module *module, struct ldb_request *req)
-{
-	struct ldb_context *ldb;
-	struct lldb_private *lldb;
-	struct lldb_context *ac;
-	struct tevent_context *ev;
-	struct tevent_timer *te;
-	struct timeval tv;
-	int ret;
-
-	lldb = talloc_get_type(ldb_module_get_private(module), struct lldb_private);
-	ldb = ldb_module_get_ctx(module);
-
-	if (req->starttime == 0 || req->timeout == 0) {
-		ldb_set_errstring(ldb, "Invalid timeout settings");
-		return LDB_ERR_TIME_LIMIT_EXCEEDED;
-	}
-
-	ev = ldb_get_event_context(ldb);
-	if (NULL == ev) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	ac = talloc_zero(ldb, struct lldb_context);
-	if (ac == NULL) {
-		ldb_set_errstring(ldb, "Out of Memory");
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	ac->module = module;
-	ac->req = req;
-	ac->lldb = lldb;
-	ac->msgid = 0;
-
-	if (lldb_dn_is_special(req)) {
-		tv.tv_sec = 0;
-		tv.tv_usec = 0;
-		te = tevent_add_timer(ev, ac, tv,
-				     lldb_auto_done_callback, ac);
-		if (NULL == te) {
-			return LDB_ERR_OPERATIONS_ERROR;
-		}
-
-		return LDB_SUCCESS;
-	}
-
-	switch (ac->req->operation) {
-	case LDB_SEARCH:
-		ret = lldb_search(ac);
-		break;
-	case LDB_ADD:
-		ret = lldb_add(ac);
-		break;
-	case LDB_MODIFY:
-		ret = lldb_modify(ac);
-		break;
-	case LDB_DELETE:
-		ret = lldb_delete(ac);
-		break;
-	case LDB_RENAME:
-		ret = lldb_rename(ac);
-		break;
-	default:
-		/* no other op supported */
-		ret = LDB_ERR_PROTOCOL_ERROR;
-		break;
-	}
-
-	if (ret != LDB_SUCCESS) {
-		lldb_request_done(ac, NULL, ret);
-		return ret;
-	}
-
-	tv.tv_sec = 0;
-	tv.tv_usec = 0;
-	te = tevent_add_timer(ev, ac, tv, lldb_callback, ac);
-	if (NULL == te) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-
-	tv.tv_sec = req->starttime + req->timeout;
-	tv.tv_usec = 0;
-	te = tevent_add_timer(ev, ac, tv, lldb_timeout, ac);
-	if (NULL == te) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	return LDB_SUCCESS;
-}
-
-static const struct ldb_module_ops lldb_ops = {
-	.name              = "ldap",
-	.search            = lldb_handle_request,
-	.add               = lldb_handle_request,
-	.modify            = lldb_handle_request,
-	.del               = lldb_handle_request,
-	.rename            = lldb_handle_request,
-	.request           = lldb_handle_request,
-	.start_transaction = lldb_start_trans,
-	.end_transaction   = lldb_end_trans,
-	.del_transaction   = lldb_del_trans,
-};
-
-
-static int lldb_destructor(struct lldb_private *lldb)
-{
-	ldap_unbind(lldb->ldap);
-	return 0;
-}
-
-
-/*
-  optionally perform a bind
- */
-static int lldb_bind(struct ldb_module *module,
-		     const char *options[])
-{
-	const char *bind_mechanism;
-	struct lldb_private *lldb;
-	struct ldb_context *ldb = ldb_module_get_ctx(module);
-	int ret;
-
-	bind_mechanism = ldb_options_find(ldb, options, "bindMech");
-	if (bind_mechanism == NULL) {
-		/* no bind wanted */
-		return LDB_SUCCESS;
-	}
-
-	lldb = talloc_get_type(ldb_module_get_private(module), struct lldb_private);
-
-	if (strcmp(bind_mechanism, "simple") == 0) {
-		const char *bind_id, *bind_secret;
-
-		bind_id = ldb_options_find(ldb, options, "bindID");
-		bind_secret = ldb_options_find(ldb, options, "bindSecret");
-		if (bind_id == NULL || bind_secret == NULL) {
-			ldb_asprintf_errstring(ldb, "simple bind requires bindID and bindSecret");
-			return LDB_ERR_OPERATIONS_ERROR;
-		}
-
-		ret = ldap_simple_bind_s(lldb->ldap, bind_id, bind_secret);
-		if (ret != LDAP_SUCCESS) {
-			ldb_asprintf_errstring(ldb, "bind failed: %s", ldap_err2string(ret));
-			return ret;
-		}
-		return LDB_SUCCESS;
-	}
-
-	ldb_asprintf_errstring(ldb, "bind failed: unknown mechanism %s", bind_mechanism);
-	return LDB_ERR_INAPPROPRIATE_AUTHENTICATION;
-}
-
-/*
-  connect to the database
-*/
-static int lldb_connect(struct ldb_context *ldb,
-			const char *url,
-			unsigned int flags,
-			const char *options[],
-			struct ldb_module **_module)
-{
-	struct ldb_module *module;
-	struct lldb_private *lldb;
-	int version = 3;
-	int ret;
-
-	module = ldb_module_new(ldb, ldb, "ldb_ldap backend", &lldb_ops);
-	if (!module) return LDB_ERR_OPERATIONS_ERROR;
-
-	lldb = talloc_zero(module, struct lldb_private);
-	if (!lldb) {
-		ldb_oom(ldb);
-		goto failed;
-	}
-	ldb_module_set_private(module, lldb);
-
-	ret = ldap_initialize(&lldb->ldap, url);
-	if (ret != LDAP_SUCCESS) {
-		ldb_debug(ldb, LDB_DEBUG_FATAL, "ldap_initialize failed for URL '%s' - %s",
-			  url, ldap_err2string(ret));
-		goto failed;
-	}
-
-	talloc_set_destructor(lldb, lldb_destructor);
-
-	ret = ldap_set_option(lldb->ldap, LDAP_OPT_PROTOCOL_VERSION, &version);
-	if (ret != LDAP_SUCCESS) {
-		ldb_debug(ldb, LDB_DEBUG_FATAL, "ldap_set_option failed - %s",
-			  ldap_err2string(ret));
-		goto failed;
-	}
-
-	*_module = module;
-
-	ret = lldb_bind(module, options);
-	if (ret != LDB_SUCCESS) {
-		goto failed;
-	}
-
-
-	return LDB_SUCCESS;
-
-failed:
-	talloc_free(module);
-	return LDB_ERR_OPERATIONS_ERROR;
-}
-
-/*
-  initialise the module
- */
-int ldb_ldap_init(const char *version)
-{
-	int ret, i;
-	const char *names[] = { "ldap", "ldaps", "ldapi", NULL };
-	LDB_MODULE_CHECK_VERSION(version);
-	for (i=0; names[i]; i++) {
-		ret = ldb_register_backend(names[i], lldb_connect, false);
-		if (ret != LDB_SUCCESS) {
-			return ret;
-		}
-	}
-	return LDB_SUCCESS;
-}