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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 **/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
/*
* ptpreop.c - bind pre-operation plugin for Pass Through Authentication
*
*/
#include "passthru.h"
static Slapi_PluginDesc pdesc = { "passthruauth", PLUGIN_MAGIC_VENDOR_STR, PRODUCTTEXT,
"pass through authentication plugin" };
/*
* function prototypes
*/
static int passthru_bindpreop( Slapi_PBlock *pb );
static int passthru_bindpreop_start( Slapi_PBlock *pb );
static int passthru_bindpreop_close( Slapi_PBlock *pb );
/*
* Plugin initialization function (which must be listed in the appropriate
* slapd config file).
*/
int
passthruauth_init( Slapi_PBlock *pb )
{
PASSTHRU_ASSERT( pb != NULL );
slapi_log_error( SLAPI_LOG_PLUGIN, PASSTHRU_PLUGIN_SUBSYSTEM,
"=> passthruauth_init\n" );
if ( slapi_pblock_set( pb, SLAPI_PLUGIN_VERSION,
(void *)SLAPI_PLUGIN_VERSION_01 ) != 0
|| slapi_pblock_set( pb, SLAPI_PLUGIN_DESCRIPTION,
(void *)&pdesc ) != 0
|| slapi_pblock_set( pb, SLAPI_PLUGIN_START_FN,
(void *)passthru_bindpreop_start ) != 0
|| slapi_pblock_set( pb, SLAPI_PLUGIN_PRE_BIND_FN,
(void *)passthru_bindpreop ) != 0
|| slapi_pblock_set( pb, SLAPI_PLUGIN_CLOSE_FN,
(void *)passthru_bindpreop_close ) != 0 ) {
slapi_log_error( SLAPI_LOG_FATAL, PASSTHRU_PLUGIN_SUBSYSTEM,
"passthruauth_init failed\n" );
return( -1 );
}
slapi_log_error( SLAPI_LOG_PLUGIN, PASSTHRU_PLUGIN_SUBSYSTEM,
"<= passthruauth_init succeeded\n" );
return( 0 );
}
/*
* passthru_bindpreop_start() is called before the directory server
* is fully up. We parse our configuration and initialize any mutexes, etc.
*/
static int
passthru_bindpreop_start( Slapi_PBlock *pb )
{
int argc, rc;
char **argv;
PASSTHRU_ASSERT( pb != NULL );
slapi_log_error( SLAPI_LOG_PLUGIN, PASSTHRU_PLUGIN_SUBSYSTEM,
"=> passthru_bindpreop_start\n" );
if ( slapi_pblock_get( pb, SLAPI_PLUGIN_ARGC, &argc ) != 0 ||
slapi_pblock_get( pb, SLAPI_PLUGIN_ARGV, &argv ) != 0 ) {
slapi_log_error( SLAPI_LOG_FATAL, PASSTHRU_PLUGIN_SUBSYSTEM,
"unable to get arguments\n" );
return( -1 );
}
if (( rc = passthru_config( argc, argv )) != LDAP_SUCCESS ) {
slapi_log_error( SLAPI_LOG_FATAL, PASSTHRU_PLUGIN_SUBSYSTEM,
"configuration failed (%s)\n", ldap_err2string( rc ));
return( -1 );
}
return( 0 );
}
/*
* Called right before the Directory Server shuts down.
*/
static int
passthru_bindpreop_close( Slapi_PBlock *pb )
{
PASSTHRU_ASSERT( pb != NULL );
slapi_log_error( SLAPI_LOG_PLUGIN, PASSTHRU_PLUGIN_SUBSYSTEM,
"=> passthru_bindpreop_close\n" );
/*
* close all our open connections.
* XXXmcs: free any memory, mutexes, etc.
*/
passthru_close_all_connections( passthru_get_config() );
return( 0 );
}
static int
passthru_bindpreop( Slapi_PBlock *pb )
{
int rc, method;
char *normbinddn, *matcheddn;
char *libldap_errmsg, *pr_errmsg, *errmsg;
PassThruConfig *cfg;
PassThruServer *srvr;
struct berval *creds, **urls;
LDAPControl **reqctrls, **resctrls;
PASSTHRU_ASSERT( pb != NULL );
slapi_log_error( SLAPI_LOG_PLUGIN, PASSTHRU_PLUGIN_SUBSYSTEM,
"=> passthru_bindpreop\n" );
/*
* retrieve parameters for bind operation
*/
if ( slapi_pblock_get( pb, SLAPI_BIND_METHOD, &method ) != 0 ||
slapi_pblock_get( pb, SLAPI_BIND_TARGET, &normbinddn ) != 0 ||
slapi_pblock_get( pb, SLAPI_BIND_CREDENTIALS, &creds ) != 0 ) {
slapi_log_error( SLAPI_LOG_FATAL, PASSTHRU_PLUGIN_SUBSYSTEM,
"<= not handled (unable to retrieve bind parameters)\n" );
return( PASSTHRU_OP_NOT_HANDLED );
}
if ( normbinddn == NULL ) {
normbinddn = "";
}
/*
* We only handle simple bind requests that include non-NULL binddn and
* credentials. Let the Directory Server itself handle everything else.
*/
if ( method != LDAP_AUTH_SIMPLE || *normbinddn == '\0'
|| creds->bv_len == 0 ) {
slapi_log_error( SLAPI_LOG_PLUGIN, PASSTHRU_PLUGIN_SUBSYSTEM,
"<= not handled (not simple bind or NULL dn/credentials)\n" );
return( PASSTHRU_OP_NOT_HANDLED );
}
/*
* Get pass through authentication configuration.
*/
cfg = passthru_get_config();
/*
* Check to see if the target DN is one we should "pass through" to
* another server.
*/
if ( passthru_dn2server( cfg, normbinddn, &srvr ) != LDAP_SUCCESS ) {
slapi_log_error( SLAPI_LOG_PLUGIN, PASSTHRU_PLUGIN_SUBSYSTEM,
"<= not handled (not one of our suffixes)\n" );
return( PASSTHRU_OP_NOT_HANDLED );
}
/*
* We are now committed to handling this bind request.
* Chain it off to another server.
*/
matcheddn = errmsg = libldap_errmsg = pr_errmsg = NULL;
urls = NULL;
resctrls = NULL;
if ( slapi_pblock_get( pb, SLAPI_REQCONTROLS, &reqctrls ) != 0 ) {
rc = LDAP_OPERATIONS_ERROR;
errmsg = "unable to retrieve bind controls";
slapi_log_error( SLAPI_LOG_FATAL, PASSTHRU_PLUGIN_SUBSYSTEM, "%s\n",
errmsg );
} else {
int lderrno;
if (( rc = passthru_simple_bind_s( pb, srvr, PASSTHRU_CONN_TRIES,
normbinddn, creds, reqctrls, &lderrno, &matcheddn,
&libldap_errmsg, &urls, &resctrls )) == LDAP_SUCCESS ) {
rc = lderrno;
errmsg = libldap_errmsg;
} else if ( rc != LDAP_USER_CANCELLED ) { /* not abandoned */
PRErrorCode prerr = PR_GetError();
pr_errmsg = PR_smprintf( "error %d - %s %s ("
SLAPI_COMPONENT_NAME_NSPR " error %d - %s)",
rc, ldap_err2string( rc ), srvr->ptsrvr_url,
prerr, slapd_pr_strerror(prerr));
if ( NULL != pr_errmsg ) {
errmsg = pr_errmsg;
} else {
errmsg = ldap_err2string( rc );
}
rc = LDAP_OPERATIONS_ERROR;
}
}
/*
* If bind succeeded, change authentication information associated
* with this connection.
*/
if ( rc == LDAP_SUCCESS ) {
char *ndn = slapi_ch_strdup( normbinddn );
if (slapi_pblock_set(pb, SLAPI_CONN_DN, ndn) != 0 ||
slapi_pblock_set(pb, SLAPI_CONN_AUTHMETHOD,
SLAPD_AUTH_SIMPLE) != 0) {
slapi_ch_free((void **)&ndn);
rc = LDAP_OPERATIONS_ERROR;
errmsg = "unable to set connection DN or AUTHTYPE";
slapi_log_error( SLAPI_LOG_FATAL, PASSTHRU_PLUGIN_SUBSYSTEM,
"%s\n", errmsg );
}
}
if ( rc != LDAP_USER_CANCELLED ) { /* not abandoned */
/*
* Send a result to our client.
*/
if ( resctrls != NULL ) {
(void)slapi_pblock_set( pb, SLAPI_RESCONTROLS, resctrls );
}
slapi_send_ldap_result( pb, rc, matcheddn, errmsg, 0, urls );
}
/*
* Clean up -- free allocated memory, etc.
*/
if ( urls != NULL ) {
passthru_free_bervals( urls );
}
if ( libldap_errmsg != NULL ) {
ldap_memfree( errmsg );
}
if ( pr_errmsg != NULL ) {
PR_smprintf_free( pr_errmsg );
}
if ( resctrls != NULL ) {
ldap_controls_free( resctrls );
}
if ( matcheddn != NULL ) {
ldap_memfree( matcheddn );
}
slapi_log_error( SLAPI_LOG_PLUGIN, PASSTHRU_PLUGIN_SUBSYSTEM,
"<= handled (error %d - %s)\n", rc, ldap_err2string( rc ));
return( PASSTHRU_OP_HANDLED );
}
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