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samba-mirror/lib/ldb/ldb_ldap/ldb_ldap.c
Volker Lendecke 9f3d2ba7ee ldb_ldap: Fix a memleak
Don't allocate a temporary value on a long-term context

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: David Mulder <dmulder@samba.org>
2020-07-02 10:38:34 +00:00

968 lines
22 KiB
C

/*
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, ret;
struct ldb_message_element *el;
count = ldap_count_values_len(bval);
if (count <= 0) {
return -1;
}
ret = ldb_msg_add_empty(msg, attr, 0, &el);
if (ret != LDB_SUCCESS) {
errno = ENOMEM;
return -1;
}
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++;
}
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 = 0;
tv.tv_usec = 0;
if (req->timeout > 0) {
tv.tv_sec = req->timeout;
}
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_ac, *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 = NULL;
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);
/* 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;
}
if (req->timeout > 0) {
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;
}