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/** BEGIN COPYRIGHT BLOCK
* This Program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation; version 2 of the License.
*
* This Program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this Program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA.
*
* In addition, as a special exception, Red Hat, Inc. gives You the additional
* right to link the code of this Program with code not covered under the GNU
* General Public License ("Non-GPL Code") and to distribute linked combinations
* including the two, subject to the limitations in this paragraph. Non-GPL Code
* permitted under this exception must only link to the code of this Program
* through those well defined interfaces identified in the file named EXCEPTION
* found in the source code files (the "Approved Interfaces"). The files of
* Non-GPL Code may instantiate templates or use macros or inline functions from
* the Approved Interfaces without causing the resulting work to be covered by
* the GNU General Public License. Only Red Hat, Inc. may make changes or
* additions to the list of Approved Interfaces. You must obey the GNU General
* Public License in all respects for all of the Program code and other code used
* in conjunction with the Program except the Non-GPL Code covered by this
* exception. If you modify this file, you may extend this exception to your
* version of the file, but you are not obligated to do so. If you do not wish to
* provide this exception without modification, you must delete this exception
* statement from your version and license this file solely under the GPL without
* exception.
*
*
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
* END COPYRIGHT BLOCK **/
/************************************************************
testsaslbind.c
This source file provides an example of a pre-operation plug-in
function for SASL authentication with LDAP bind operations.
The function demonstrates how to send credentials back to the
client in cases where mutual authentication is required.
This plugin responds to SASL bind requests with a mechanism
name of "babsmechanism". Simple binds and other SASL mechanisms
should not be affected by the presence of this plugin.
Binds with our mechanism always succeed (which is not very secure!)
Note that the Directory Server front-end handles bind
operations requested by the root DN. The server does not
invoke your plug-in function if the client is authenticating
as the root DN.
To test this plug-in function, stop the server, edit the dse.ldif file
(in the <server_root>/slapd-<server_id>/config directory)
and add the following lines before restarting the server :
dn: cn=test-saslbind,cn=plugins,cn=config
objectclass: top
objectclass: nsSlapdPlugin
objectclass: extensibleObject
cn: test-saslbind
nsslapd-pluginpath: <serverroot>/plugins/slapd/slapi/examples/libtest-plugin.so
nsslapd-plugininitfunc: testsasl_init
nsslapd-plugintype: preoperation
nsslapd-pluginenabled: on
nsslapd-pluginid: test-saslbind
nsslapd-pluginversion: 5.0
nsslapd-pluginvendor: Fedora Project
nsslapd-plugindescription: sample SASL bind pre-operation plugin
************************************************************/
#include <stdio.h>
#include <string.h>
#include "slapi-plugin.h"
Slapi_PluginDesc saslpdesc = { "test-saslbind", "Fedora Project", "1.0.3",
"sample SASL bind pre-operation plugin" };
#define TEST_SASL_MECHANISM "babsmechanism"
#define TEST_SASL_AUTHMETHOD SLAPD_AUTH_SASL TEST_SASL_MECHANISM
/* Pre-operation plug-in function */
int
testsasl_bind( Slapi_PBlock *pb )
{
char *target;
int method;
char *mechanism;
struct berval *credentials;
struct berval svrcreds;
/* Log a message to the server error log. */
slapi_log_error( SLAPI_LOG_PLUGIN, "testsasl_bind",
"Pre-operation bind function called.\n" );
/* Gets parameters available when processing an LDAP bind
operation. */
if ( slapi_pblock_get( pb, SLAPI_BIND_TARGET, &target ) != 0 ||
slapi_pblock_get( pb, SLAPI_BIND_METHOD, &method ) != 0 ||
slapi_pblock_get( pb, SLAPI_BIND_CREDENTIALS, &credentials ) != 0 ||
slapi_pblock_get( pb, SLAPI_BIND_SASLMECHANISM, &mechanism )
!= 0 ) {
slapi_log_error( SLAPI_LOG_FATAL, "testsasl_bind",
"Could not get parameters for bind operation\n" );
return( 0 ); /* let the server try other mechanisms */
}
/* Check to see if the mechanism being used is ours. */
if ( mechanism == NULL
|| strcmp( mechanism, TEST_SASL_MECHANISM ) != 0 ) {
return( 0 ); /* let the server try other mechanisms */
}
/*
* Set the DN and authentication method for the connection.
* Binds with our mechanism always succeed (which is not very secure!)
*/
if ( slapi_pblock_set( pb, SLAPI_CONN_DN, slapi_ch_strdup( target ) )
!= 0 || slapi_pblock_set( pb, SLAPI_CONN_AUTHMETHOD,
TEST_SASL_AUTHMETHOD ) != 0 ) {
slapi_log_error( SLAPI_LOG_FATAL, "testsasl_bind",
"Failed to set DN and method for connection\n" );
slapi_send_ldap_result( pb, LDAP_OPERATIONS_ERROR, NULL,
NULL, 0, NULL );
return( 1 ); /* done -- sent result to client */
}
/* Set the credentials that should be returned to the client. */
svrcreds.bv_val = "my credentials";
svrcreds.bv_len = sizeof("my credentials") - 1;
if ( slapi_pblock_set( pb, SLAPI_BIND_RET_SASLCREDS, &svrcreds )
!= 0 ) {
slapi_log_error( SLAPI_LOG_PLUGIN, "testsasl_bind",
"Could not set credentials to return to client\n" );
slapi_pblock_set( pb, SLAPI_CONN_DN, NULL );
slapi_pblock_set( pb, SLAPI_CONN_AUTHMETHOD, SLAPD_AUTH_NONE );
return( 0 ); /* let the server try other mechanisms */
}
/* Send the credentials back to the client. */
slapi_log_error( SLAPI_LOG_PLUGIN, "testsasl_bind",
"Authenticated: %s\n", target );
slapi_send_ldap_result( pb, LDAP_SUCCESS, NULL, NULL, 0, NULL );
return( 1 ); /* done -- sent result to client */
}
/* Initialization function */
#ifdef _WIN32
__declspec(dllexport)
#endif
int
testsasl_init( Slapi_PBlock *pb )
{
/* Register the pre-operation bind function and specify
the server plug-in version. */
if ( slapi_pblock_set( pb, SLAPI_PLUGIN_VERSION, SLAPI_PLUGIN_VERSION_01 ) != 0 ||
slapi_pblock_set( pb, SLAPI_PLUGIN_DESCRIPTION, (void *)&saslpdesc ) != 0 ||
slapi_pblock_set( pb, SLAPI_PLUGIN_PRE_BIND_FN, (void *) testsasl_bind ) != 0 ) {
slapi_log_error( SLAPI_LOG_PLUGIN, "testsasl_init",
"Failed to set version and function\n" );
return( -1 );
}
/* Register the SASL mechanism. */
slapi_register_supported_saslmechanism( TEST_SASL_MECHANISM );
return( 0 );
}
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