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https://git.openldap.org/openldap/openldap.git
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2e0912622b
Copyright 2000 Gábor Gombás. All rights reserved. This is free software. You may redistribute and use it under the same terms as OpenLDAP itself.
307 lines
7.2 KiB
C
307 lines
7.2 KiB
C
/* $OpenLDAP$ */
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/*
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* Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
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* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
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*/
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/* Portions
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* Copyright (c) 1993 Regents of the University of Michigan.
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* All rights reserved.
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*
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* kbind.c
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*/
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/*
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* BindRequest ::= SEQUENCE {
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* version INTEGER,
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* name DistinguishedName, -- who
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* authentication CHOICE {
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* simple [0] OCTET STRING -- passwd
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#ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
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* krbv42ldap [1] OCTET STRING
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* krbv42dsa [2] OCTET STRING
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#endif
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* sasl [3] SaslCredentials -- LDAPv3
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* }
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* }
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*
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* BindResponse ::= SEQUENCE {
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* COMPONENTS OF LDAPResult,
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* serverSaslCreds OCTET STRING OPTIONAL -- LDAPv3
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* }
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*
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*/
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#include "portable.h"
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#ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
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#include <stdio.h>
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#include <ac/stdlib.h>
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#include <ac/krb.h>
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#include <ac/socket.h>
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#include <ac/string.h>
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#include <ac/time.h>
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#include "ldap-int.h"
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/*
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* ldap_kerberos_bind1 - initiate a bind to the ldap server using
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* kerberos authentication. The dn is supplied. It is assumed the user
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* already has a valid ticket granting ticket. The msgid of the
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* request is returned on success (suitable for passing to ldap_result()),
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* -1 is returned if there's trouble.
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*
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* Example:
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* ldap_kerberos_bind1( ld, "cn=manager, o=university of michigan, c=us" )
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*/
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int
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ldap_kerberos_bind1( LDAP *ld, LDAP_CONST char *dn )
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{
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BerElement *ber;
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char *cred;
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int rc;
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ber_len_t credlen;
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#ifdef STR_TRANSLATION
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int str_translation_on;
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#endif /* STR_TRANSLATION */
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Debug( LDAP_DEBUG_TRACE, "ldap_kerberos_bind1\n", 0, 0, 0 );
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if ( dn == NULL )
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dn = "";
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if ( (cred = ldap_get_kerberosv4_credentials( ld, dn, "ldapserver",
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&credlen )) == NULL ) {
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return( -1 ); /* ld_errno should already be set */
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}
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/* create a message to send */
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if ( (ber = ldap_alloc_ber_with_options( ld )) == NULL ) {
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LDAP_FREE( cred );
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return( -1 );
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}
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#ifdef STR_TRANSLATION
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if (( str_translation_on = (( ber->ber_options &
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LBER_TRANSLATE_STRINGS ) != 0 ))) { /* turn translation off */
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ber->ber_options &= ~LBER_TRANSLATE_STRINGS;
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}
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#endif /* STR_TRANSLATION */
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/* fill it in */
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rc = ber_printf( ber, "{it{isto}}", ++ld->ld_msgid, LDAP_REQ_BIND,
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ld->ld_version, dn, LDAP_AUTH_KRBV41, cred, credlen );
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#ifdef STR_TRANSLATION
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if ( str_translation_on ) { /* restore translation */
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ber->ber_options |= LBER_TRANSLATE_STRINGS;
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}
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#endif /* STR_TRANSLATION */
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if ( rc == -1 ) {
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LDAP_FREE( cred );
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ber_free( ber, 1 );
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ld->ld_errno = LDAP_ENCODING_ERROR;
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return( -1 );
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}
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LDAP_FREE( cred );
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#ifndef LDAP_NOCACHE
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if ( ld->ld_cache != NULL ) {
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ldap_flush_cache( ld );
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}
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#endif /* !LDAP_NOCACHE */
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/* send the message */
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return ( ldap_send_initial_request( ld, LDAP_REQ_BIND, dn, ber ));
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}
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int
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ldap_kerberos_bind1_s( LDAP *ld, LDAP_CONST char *dn )
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{
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int msgid;
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LDAPMessage *res;
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Debug( LDAP_DEBUG_TRACE, "ldap_kerberos_bind1_s\n", 0, 0, 0 );
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/* initiate the bind */
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if ( (msgid = ldap_kerberos_bind1( ld, dn )) == -1 )
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return( ld->ld_errno );
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/* wait for a result */
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if ( ldap_result( ld, ld->ld_msgid, 1, (struct timeval *) 0, &res )
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== -1 ) {
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return( ld->ld_errno ); /* ldap_result sets ld_errno */
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}
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return( ldap_result2error( ld, res, 1 ) );
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}
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/*
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* ldap_kerberos_bind2 - initiate a bind to the X.500 server using
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* kerberos authentication. The dn is supplied. It is assumed the user
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* already has a valid ticket granting ticket. The msgid of the
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* request is returned on success (suitable for passing to ldap_result()),
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* -1 is returned if there's trouble.
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*
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* Example:
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* ldap_kerberos_bind2( ld, "cn=manager, o=university of michigan, c=us" )
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*/
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int
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ldap_kerberos_bind2( LDAP *ld, LDAP_CONST char *dn )
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{
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BerElement *ber;
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char *cred;
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int rc;
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ber_len_t credlen;
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#ifdef STR_TRANSLATION
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int str_translation_on;
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#endif /* STR_TRANSLATION */
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Debug( LDAP_DEBUG_TRACE, "ldap_kerberos_bind2\n", 0, 0, 0 );
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if ( dn == NULL )
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dn = "";
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if ( (cred = ldap_get_kerberosv4_credentials( ld, dn, "x500dsa", &credlen ))
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== NULL ) {
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return( -1 ); /* ld_errno should already be set */
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}
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/* create a message to send */
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if ( (ber = ldap_alloc_ber_with_options( ld )) == NULL ) {
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LDAP_FREE( cred );
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return( -1 );
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}
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#ifdef STR_TRANSLATION
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if (( str_translation_on = (( ber->ber_options &
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LBER_TRANSLATE_STRINGS ) != 0 ))) { /* turn translation off */
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ber->ber_options &= ~LBER_TRANSLATE_STRINGS;
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}
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#endif /* STR_TRANSLATION */
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/* fill it in */
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rc = ber_printf( ber, "{it{isto}}", ++ld->ld_msgid, LDAP_REQ_BIND,
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ld->ld_version, dn, LDAP_AUTH_KRBV42, cred, credlen );
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#ifdef STR_TRANSLATION
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if ( str_translation_on ) { /* restore translation */
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ber->ber_options |= LBER_TRANSLATE_STRINGS;
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}
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#endif /* STR_TRANSLATION */
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LDAP_FREE( cred );
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if ( rc == -1 ) {
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ber_free( ber, 1 );
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ld->ld_errno = LDAP_ENCODING_ERROR;
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return( -1 );
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}
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/* send the message */
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return ( ldap_send_initial_request( ld, LDAP_REQ_BIND, dn, ber ));
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}
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/* synchronous bind to DSA using kerberos */
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int
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ldap_kerberos_bind2_s( LDAP *ld, LDAP_CONST char *dn )
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{
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int msgid;
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LDAPMessage *res;
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Debug( LDAP_DEBUG_TRACE, "ldap_kerberos_bind2_s\n", 0, 0, 0 );
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/* initiate the bind */
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if ( (msgid = ldap_kerberos_bind2( ld, dn )) == -1 )
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return( ld->ld_errno );
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/* wait for a result */
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if ( ldap_result( ld, ld->ld_msgid, 1, (struct timeval *) 0, &res )
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== -1 ) {
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return( ld->ld_errno ); /* ldap_result sets ld_errno */
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}
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return( ldap_result2error( ld, res, 1 ) );
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}
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/* synchronous bind to ldap and DSA using kerberos */
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int
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ldap_kerberos_bind_s( LDAP *ld, LDAP_CONST char *dn )
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{
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int err;
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Debug( LDAP_DEBUG_TRACE, "ldap_kerberos_bind_s\n", 0, 0, 0 );
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if ( (err = ldap_kerberos_bind1_s( ld, dn )) != LDAP_SUCCESS )
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return( err );
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return( ldap_kerberos_bind2_s( ld, dn ) );
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}
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#ifndef AUTHMAN
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/*
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* ldap_get_kerberosv4_credentials - obtain kerberos v4 credentials for ldap.
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* The dn of the entry to which to bind is supplied. It's assumed the
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* user already has a tgt.
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*/
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char *
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ldap_get_kerberosv4_credentials(
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LDAP *ld,
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LDAP_CONST char *who,
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LDAP_CONST char *service,
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ber_len_t *len )
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{
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KTEXT_ST ktxt;
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int err;
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char realm[REALM_SZ], *cred, *krbinstance;
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Debug( LDAP_DEBUG_TRACE, "ldap_get_kerberosv4_credentials\n", 0, 0, 0 );
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if ( (err = krb_get_tf_realm( tkt_string(), realm )) != KSUCCESS ) {
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#ifdef LDAP_LIBUI
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fprintf( stderr, "krb_get_tf_realm failed (%s)\n",
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krb_err_txt[err] );
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#endif /* LDAP_LIBUI */
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ld->ld_errno = LDAP_AUTH_UNKNOWN;
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return( NULL );
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}
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if ( ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, NULL ) == -1 ) {
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/* not connected yet */
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int rc = ldap_open_defconn( ld );
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if( rc < 0 ) return NULL;
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}
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krbinstance = ld->ld_defconn->lconn_krbinstance;
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if ( (err = krb_mk_req( &ktxt, service, krbinstance, realm, 0 ))
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!= KSUCCESS ) {
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#ifdef LDAP_LIBUI
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fprintf( stderr, "krb_mk_req failed (%s)\n", krb_err_txt[err] );
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#endif /* LDAP_LIBUI */
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ld->ld_errno = LDAP_AUTH_UNKNOWN;
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return( NULL );
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}
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if ( ( cred = LDAP_MALLOC( ktxt.length )) == NULL ) {
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ld->ld_errno = LDAP_NO_MEMORY;
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return( NULL );
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}
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*len = ktxt.length;
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memcpy( cred, ktxt.dat, ktxt.length );
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return( cred );
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}
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#endif /* !AUTHMAN */
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#endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND */
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