RetroZilla/directory/c-sdk/ldap/libraries/libldap/sbind.c
2015-10-20 23:03:22 -04:00

278 lines
8.0 KiB
C

/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code, released
* March 31, 1998.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998-1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
* Copyright (c) 1993 Regents of the University of Michigan.
* All rights reserved.
*/
/*
* sbind.c
*/
#if 0
#ifndef lint
static char copyright[] = "@(#) Copyright (c) 1993 Regents of the University of Michigan.\nAll rights reserved.\n";
#endif
#endif
#include "ldap-int.h"
static int simple_bind_nolock( LDAP *ld, const char *dn, const char *passwd,
int unlock_permitted );
static int simple_bindifnot_s( LDAP *ld, const char *dn, const char *passwd );
/*
* ldap_simple_bind - bind to the ldap server. The dn and
* password of the entry to which to bind are supplied. The message id
* of the request initiated is returned.
*
* Example:
* ldap_simple_bind( ld, "cn=manager, o=university of michigan, c=us",
* "secret" )
*/
int
LDAP_CALL
ldap_simple_bind( LDAP *ld, const char *dn, const char *passwd )
{
int rc;
LDAPDebug( LDAP_DEBUG_TRACE, "ldap_simple_bind\n", 0, 0, 0 );
if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) {
return( -1 );
}
rc = simple_bind_nolock( ld, dn, passwd, 1 );
return( rc );
}
static int
simple_bind_nolock( LDAP *ld, const char *dn, const char *passwd,
int unlock_permitted )
{
BerElement *ber;
int rc, msgid;
/*
* The bind request looks like this:
* BindRequest ::= SEQUENCE {
* version INTEGER,
* name DistinguishedName, -- who
* authentication CHOICE {
* simple [0] OCTET STRING -- passwd
* }
* }
* all wrapped up in an LDAPMessage sequence.
*/
LDAP_MUTEX_LOCK( ld, LDAP_MSGID_LOCK );
msgid = ++ld->ld_msgid;
LDAP_MUTEX_UNLOCK( ld, LDAP_MSGID_LOCK );
if ( dn == NULL )
dn = "";
if ( passwd == NULL )
passwd = "";
if ( ld->ld_cache_on && ld->ld_cache_bind != NULL ) {
struct berval bv;
bv.bv_val = (char *)passwd;
bv.bv_len = strlen( passwd );
/* if ( unlock_permitted ) LDAP_MUTEX_UNLOCK( ld ); */
LDAP_MUTEX_LOCK( ld, LDAP_CACHE_LOCK );
rc = (ld->ld_cache_bind)( ld, msgid, LDAP_REQ_BIND, dn, &bv,
LDAP_AUTH_SIMPLE );
LDAP_MUTEX_UNLOCK( ld, LDAP_CACHE_LOCK );
/* if ( unlock_permitted ) LDAP_MUTEX_LOCK( ld ); */
if ( rc != 0 ) {
return( rc );
}
}
/* create a message to send */
if (( rc = nsldapi_alloc_ber_with_options( ld, &ber ))
!= LDAP_SUCCESS ) {
return( -1 );
}
/* fill it in */
if ( ber_printf( ber, "{it{ists}", msgid, LDAP_REQ_BIND,
NSLDAPI_LDAP_VERSION( ld ), dn, LDAP_AUTH_SIMPLE, passwd ) == -1 ) {
LDAP_SET_LDERRNO( ld, LDAP_ENCODING_ERROR, NULL, NULL );
ber_free( ber, 1 );
return( -1 );
}
if ( nsldapi_put_controls( ld, NULL, 1, ber ) != LDAP_SUCCESS ) {
ber_free( ber, 1 );
return( -1 );
}
/* send the message */
return( nsldapi_send_initial_request( ld, msgid, LDAP_REQ_BIND,
(char *)dn, ber ));
}
/*
* ldap_simple_bind - bind to the ldap server using simple
* authentication. The dn and password of the entry to which to bind are
* supplied. LDAP_SUCCESS is returned upon success, the ldap error code
* otherwise.
*
* Example:
* ldap_simple_bind_s( ld, "cn=manager, o=university of michigan, c=us",
* "secret" )
*/
int
LDAP_CALL
ldap_simple_bind_s( LDAP *ld, const char *dn, const char *passwd )
{
int msgid;
LDAPMessage *result;
LDAPDebug( LDAP_DEBUG_TRACE, "ldap_simple_bind_s\n", 0, 0, 0 );
if ( NSLDAPI_VALID_LDAP_POINTER( ld ) &&
( ld->ld_options & LDAP_BITOPT_RECONNECT ) != 0 ) {
return( simple_bindifnot_s( ld, dn, passwd ));
}
if ( (msgid = ldap_simple_bind( ld, dn, passwd )) == -1 )
return( LDAP_GET_LDERRNO( ld, NULL, NULL ) );
if ( ldap_result( ld, msgid, 1, (struct timeval *) 0, &result ) == -1 )
return( LDAP_GET_LDERRNO( ld, NULL, NULL ) );
return( ldap_result2error( ld, result, 1 ) );
}
/*
* simple_bindifnot_s() is like ldap_simple_bind_s() except that it only does
* a bind if the default connection is not currently bound.
* If a successful bind using the same DN has already taken place we just
* return LDAP_SUCCESS without conversing with the server at all.
*/
static int
simple_bindifnot_s( LDAP *ld, const char *dn, const char *passwd )
{
int msgid, rc;
LDAPMessage *result;
char *binddn;
LDAPDebug( LDAP_DEBUG_TRACE, "simple_bindifnot_s\n", 0, 0, 0 );
if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) {
return( LDAP_PARAM_ERROR );
}
if ( dn == NULL ) {
dn = ""; /* to make comparisons simpler */
}
/*
* if we are already bound using the same DN, just return LDAP_SUCCESS.
*/
if ( NULL != ( binddn = nsldapi_get_binddn( ld ))
&& 0 == strcmp( dn, binddn )) {
rc = LDAP_SUCCESS;
LDAP_SET_LDERRNO( ld, rc, NULL, NULL );
return rc;
}
/*
* if the default connection has been lost and is now marked dead,
* dispose of the default connection so it will get re-established.
*
* if not, clear the bind DN and status to ensure that we don't
* report the wrong bind DN to a different thread while waiting
* for our bind result to return from the server.
*/
LDAP_MUTEX_LOCK( ld, LDAP_CONN_LOCK );
if ( NULL != ld->ld_defconn ) {
if ( LDAP_CONNST_DEAD == ld->ld_defconn->lconn_status ) {
nsldapi_free_connection( ld, ld->ld_defconn, NULL, NULL, 1, 0 );
ld->ld_defconn = NULL;
} else if ( ld->ld_defconn->lconn_binddn != NULL ) {
NSLDAPI_FREE( ld->ld_defconn->lconn_binddn );
ld->ld_defconn->lconn_binddn = NULL;
ld->ld_defconn->lconn_bound = 0;
}
}
LDAP_MUTEX_UNLOCK( ld, LDAP_CONN_LOCK );
/*
* finally, bind (this will open a new connection if necessary)
*
* do everything under the protection of the result lock to
* ensure that only one thread will be in this code at a time.
* XXXmcs: we should use a condition variable instead?
*/
LDAP_MUTEX_LOCK( ld, LDAP_RESULT_LOCK );
if ( (msgid = simple_bind_nolock( ld, dn, passwd, 0 )) == -1 ) {
rc = LDAP_GET_LDERRNO( ld, NULL, NULL );
goto unlock_and_return;
}
/*
* Note that at this point the bind request is on its way to the
* server and at any time now we will either be bound as the new
* DN (if the bind succeeded) or we will be bound as anonymous (if
* the bind failed).
*/
/*
* Wait for the bind result. Code inside result.c:read1msg()
* takes care of setting the connection's bind DN and status.
*/
if ( nsldapi_result_nolock( ld, msgid, 1, 0, (struct timeval *) 0,
&result ) == -1 ) {
rc = LDAP_GET_LDERRNO( ld, NULL, NULL );
goto unlock_and_return;
}
rc = ldap_result2error( ld, result, 1 );
unlock_and_return:
LDAP_MUTEX_UNLOCK( ld, LDAP_RESULT_LOCK );
return( rc );
}