763 lines
20 KiB
C
763 lines
20 KiB
C
/*
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* $Source: /mit/krb5/.cvsroot/src/appl/telnet/libtelnet/kerberos5.c,v $
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* $Author: tytso $
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* $Id: kerberos5.c,v 5.3 1993/09/01 03:00:12 tytso Exp $
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*/
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#if !defined(lint) && !defined(SABER)
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static
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#ifdef __STDC__
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const
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#endif
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char rcsid_kerberos5_c[] = "$Id: kerberos5.c,v 5.3 1993/09/01 03:00:12 tytso Exp $";
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#endif /* lint */
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/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)kerberos5.c 8.2 (Berkeley) 12/15/93";
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#endif /* not lint */
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/*
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* Copyright (C) 1990 by the Massachusetts Institute of Technology
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*
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* Export of this software from the United States of America may
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* require a specific license from the United States Government.
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* It is the responsibility of any person or organization contemplating
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* export to obtain such a license before exporting.
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*
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* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
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* distribute this software and its documentation for any purpose and
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* without fee is hereby granted, provided that the above copyright
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* notice appear in all copies and that both that copyright notice and
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* this permission notice appear in supporting documentation, and that
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* the name of M.I.T. not be used in advertising or publicity pertaining
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* to distribution of the software without specific, written prior
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* permission. M.I.T. makes no representations about the suitability of
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* this software for any purpose. It is provided "as is" without express
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* or implied warranty.
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*/
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#ifdef KRB5
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#include <arpa/telnet.h>
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#include <stdio.h>
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#include <krb5/krb5.h>
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#include <krb5/asn1.h>
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#include <krb5/crc-32.h>
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#include <krb5/los-proto.h>
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#include <krb5/ext-proto.h>
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#include <com_err.h>
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#include <netdb.h>
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#include <ctype.h>
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/* kerberos 5 include files (ext-proto.h) will get an appropriate stdlib.h
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and string.h/strings.h */
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#include "encrypt.h"
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#include "auth.h"
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#include "misc.h"
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extern auth_debug_mode;
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#ifdef FORWARD
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int forward_flags = 0; /* Flags get set in telnet/main.c on -f and -F */
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/* These values need to be the same as those defined in telnet/main.c. */
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/* Either define them in both places, or put in some common header file. */
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#define OPTS_FORWARD_CREDS 0x00000002
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#define OPTS_FORWARDABLE_CREDS 0x00000001
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void kerberos5_forward();
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#endif /* FORWARD */
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static unsigned char str_data[1024] = { IAC, SB, TELOPT_AUTHENTICATION, 0,
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AUTHTYPE_KERBEROS_V5, };
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/*static unsigned char str_name[1024] = { IAC, SB, TELOPT_AUTHENTICATION,
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TELQUAL_NAME, };*/
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#define KRB_AUTH 0 /* Authentication data follows */
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#define KRB_REJECT 1 /* Rejected (reason might follow) */
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#define KRB_ACCEPT 2 /* Accepted */
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#define KRB_RESPONSE 3 /* Response for mutual auth. */
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#ifdef FORWARD
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#define KRB_FORWARD 4 /* Forwarded credentials follow */
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#define KRB_FORWARD_ACCEPT 5 /* Forwarded credentials accepted */
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#define KRB_FORWARD_REJECT 6 /* Forwarded credentials rejected */
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#endif /* FORWARD */
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static krb5_data auth;
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/* telnetd gets session key from here */
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static krb5_tkt_authent *authdat = NULL;
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/* telnet matches the AP_REQ and AP_REP with this */
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static krb5_authenticator authenticator;
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/* some compilers can't hack void *, so we use the Kerberos krb5_pointer,
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which is either void * or char *, depending on the compiler. */
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#define Voidptr krb5_pointer
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Block session_key;
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static int
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Data(ap, type, d, c)
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Authenticator *ap;
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int type;
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Voidptr d;
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int c;
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{
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unsigned char *p = str_data + 4;
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unsigned char *cd = (unsigned char *)d;
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if (c == -1)
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c = strlen((char *)cd);
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if (auth_debug_mode) {
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printf("%s:%d: [%d] (%d)",
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str_data[3] == TELQUAL_IS ? ">>>IS" : ">>>REPLY",
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str_data[3],
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type, c);
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printd(d, c);
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printf("\r\n");
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}
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*p++ = ap->type;
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*p++ = ap->way;
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*p++ = type;
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while (c-- > 0) {
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if ((*p++ = *cd++) == IAC)
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*p++ = IAC;
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}
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*p++ = IAC;
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*p++ = SE;
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if (str_data[3] == TELQUAL_IS)
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printsub('>', &str_data[2], p - &str_data[2]);
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return(net_write(str_data, p - str_data));
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}
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int
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kerberos5_init(ap, server)
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Authenticator *ap;
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int server;
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{
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if (server)
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str_data[3] = TELQUAL_REPLY;
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else
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str_data[3] = TELQUAL_IS;
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krb5_init_ets();
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return(1);
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}
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int
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kerberos5_send(ap)
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Authenticator *ap;
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{
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char **realms;
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char *name;
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char *p1, *p2;
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krb5_checksum ksum;
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krb5_octet sum[CRC32_CKSUM_LENGTH];
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krb5_principal server;
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krb5_error_code r;
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krb5_ccache ccache;
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krb5_creds creds; /* telnet gets session key from here */
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extern krb5_flags krb5_kdc_default_options;
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int ap_opts;
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#ifdef ENCRYPTION
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krb5_keyblock *newkey = 0;
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#endif /* ENCRYPTION */
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ksum.checksum_type = CKSUMTYPE_CRC32;
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ksum.contents = sum;
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ksum.length = sizeof(sum);
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bzero((Voidptr )sum, sizeof(sum));
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if (!UserNameRequested) {
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if (auth_debug_mode) {
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printf("Kerberos V5: no user name supplied\r\n");
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}
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return(0);
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}
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if (r = krb5_cc_default(&ccache)) {
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if (auth_debug_mode) {
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printf("Kerberos V5: could not get default ccache\r\n");
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}
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return(0);
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}
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if ((name = malloc(strlen(RemoteHostName)+1)) == NULL) {
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if (auth_debug_mode)
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printf("Out of memory for hostname in Kerberos V5\r\n");
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return(0);
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}
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if (r = krb5_get_host_realm(RemoteHostName, &realms)) {
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if (auth_debug_mode)
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printf("Kerberos V5: no realm for %s\r\n", RemoteHostName);
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free(name);
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return(0);
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}
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p1 = RemoteHostName;
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p2 = name;
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while (*p2 = *p1++) {
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if (isupper(*p2))
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*p2 |= 040;
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++p2;
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}
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if (r = krb5_build_principal_ext(&server,
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strlen(realms[0]), realms[0],
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4, "host",
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p2 - name, name,
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0)) {
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if (auth_debug_mode) {
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printf("Kerberos V5: failure setting up principal (%s)\r\n",
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error_message(r));
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}
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free(name);
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krb5_free_host_realm(realms);
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return(0);
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}
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bzero((char *)&creds, sizeof(creds));
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creds.server = server;
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if (r = krb5_cc_get_principal(ccache, &creds.client)) {
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if (auth_debug_mode) {
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printf("Kerberos V5: failure on principal (%s)\r\n",
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error_message(r));
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}
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free(name);
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krb5_free_principal(server);
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krb5_free_host_realm(realms);
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return(0);
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}
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if (r = krb5_get_credentials(krb5_kdc_default_options, ccache, &creds)) {
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if (auth_debug_mode) {
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printf("Kerberos V5: failure on credentials(%d)\r\n",r);
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}
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free(name);
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krb5_free_host_realm(realms);
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krb5_free_principal(server);
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return(0);
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}
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if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL)
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ap_opts = AP_OPTS_MUTUAL_REQUIRED;
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else
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ap_opts = 0;
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r = krb5_mk_req_extended(ap_opts, &ksum, krb5_kdc_default_options, 0,
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#ifdef ENCRYPTION
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&newkey,
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#else /* ENCRYPTION */
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0,
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#endif /* ENCRYPTION */
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ccache, &creds, &authenticator, &auth);
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/* don't let the key get freed if we clean up the authenticator */
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authenticator.subkey = 0;
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free(name);
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krb5_free_host_realm(realms);
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krb5_free_principal(server);
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#ifdef ENCRYPTION
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if (newkey) {
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/* keep the key in our private storage, but don't use it
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yet---see kerberos5_reply() below */
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if (newkey->keytype != KEYTYPE_DES) {
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if (creds.keyblock.keytype == KEYTYPE_DES)
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/* use the session key in credentials instead */
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memcpy((char *)session_key,
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(char *)creds.keyblock.contents, sizeof(Block));
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else
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/* XXX ? */;
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} else {
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memcpy((char *)session_key, (char *)newkey->contents,
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sizeof(Block));
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}
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krb5_free_keyblock(newkey);
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}
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#endif /* ENCRYPTION */
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if (r) {
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if (auth_debug_mode) {
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printf("Kerberos V5: mk_req failed (%s)\r\n",
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error_message(r));
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}
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return(0);
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}
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if (!auth_sendname(UserNameRequested, strlen(UserNameRequested))) {
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if (auth_debug_mode)
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printf("Not enough room for user name\r\n");
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return(0);
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}
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if (!Data(ap, KRB_AUTH, auth.data, auth.length)) {
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if (auth_debug_mode)
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printf("Not enough room for authentication data\r\n");
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return(0);
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}
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if (auth_debug_mode) {
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printf("Sent Kerberos V5 credentials to server\r\n");
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}
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return(1);
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}
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void
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kerberos5_is(ap, data, cnt)
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Authenticator *ap;
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unsigned char *data;
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int cnt;
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{
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int r;
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struct hostent *hp;
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char *p1, *p2;
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static char *realm = NULL;
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krb5_principal server;
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krb5_ap_rep_enc_part reply;
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krb5_data outbuf;
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#ifdef ENCRYPTION
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Session_Key skey;
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#endif /* ENCRYPTION */
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char *name;
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char *getenv();
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krb5_data inbuf;
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if (cnt-- < 1)
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return;
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switch (*data++) {
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case KRB_AUTH:
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auth.data = (char *)data;
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auth.length = cnt;
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if (!(hp = gethostbyname(LocalHostName))) {
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if (auth_debug_mode)
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printf("Cannot resolve local host name\r\n");
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Data(ap, KRB_REJECT, "Unknown local hostname.", -1);
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auth_finished(ap, AUTH_REJECT);
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return;
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}
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if (!realm && (krb5_get_default_realm(&realm))) {
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if (auth_debug_mode)
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printf("Could not get default realm\r\n");
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Data(ap, KRB_REJECT, "Could not get default realm.", -1);
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auth_finished(ap, AUTH_REJECT);
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return;
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}
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if ((name = malloc(strlen(hp->h_name)+1)) == NULL) {
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if (auth_debug_mode)
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printf("Out of memory for hostname in Kerberos V5\r\n");
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Data(ap, KRB_REJECT, "Out of memory.", -1);
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auth_finished(ap, AUTH_REJECT);
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return;
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}
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p1 = hp->h_name;
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p2 = name;
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while (*p2 = *p1++) {
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if (isupper(*p2))
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*p2 |= 040;
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++p2;
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}
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if (authdat)
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krb5_free_tkt_authent(authdat);
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r = krb5_build_principal_ext(&server,
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strlen(realm), realm,
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4, "host",
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p2 - name, name,
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0);
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if (!r) {
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r = krb5_rd_req_simple(&auth, server, 0, &authdat);
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krb5_free_principal(server);
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}
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if (r) {
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char errbuf[128];
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errout:
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authdat = 0;
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(void) strcpy(errbuf, "Read req failed: ");
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(void) strcat(errbuf, error_message(r));
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Data(ap, KRB_REJECT, errbuf, -1);
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if (auth_debug_mode)
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printf("%s\r\n", errbuf);
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return;
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}
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free(name);
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if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) {
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/* do ap_rep stuff here */
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reply.ctime = authdat->authenticator->ctime;
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reply.cusec = authdat->authenticator->cusec;
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reply.subkey = 0; /* use the one he gave us, so don't
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need to return one here */
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reply.seq_number = 0; /* we don't do seq #'s. */
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if (r = krb5_mk_rep(&reply,
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authdat->authenticator->subkey ?
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authdat->authenticator->subkey :
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authdat->ticket->enc_part2->session,
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&outbuf)) {
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goto errout;
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}
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Data(ap, KRB_RESPONSE, outbuf.data, outbuf.length);
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}
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if (krb5_unparse_name(authdat->ticket->enc_part2 ->client,
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&name))
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name = 0;
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Data(ap, KRB_ACCEPT, name, name ? -1 : 0);
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if (auth_debug_mode) {
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printf("Kerberos5 identifies him as ``%s''\r\n",
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name ? name : "");
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}
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auth_finished(ap, AUTH_USER);
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free(name);
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if (authdat->authenticator->subkey &&
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authdat->authenticator->subkey->keytype == KEYTYPE_DES) {
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bcopy((Voidptr )authdat->authenticator->subkey->contents,
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(Voidptr )session_key, sizeof(Block));
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} else if (authdat->ticket->enc_part2->session->keytype ==
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KEYTYPE_DES) {
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bcopy((Voidptr )authdat->ticket->enc_part2->session->contents,
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(Voidptr )session_key, sizeof(Block));
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} else
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break;
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#ifdef ENCRYPTION
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skey.type = SK_DES;
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skey.length = 8;
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skey.data = session_key;
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encrypt_session_key(&skey, 1);
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#endif /* ENCRYPTION */
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break;
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#ifdef FORWARD
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case KRB_FORWARD:
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inbuf.data = (char *)data;
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inbuf.length = cnt;
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if (r = rd_and_store_for_creds(&inbuf, authdat->ticket,
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UserNameRequested)) {
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char errbuf[128];
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(void) strcpy(errbuf, "Read forwarded creds failed: ");
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(void) strcat(errbuf, error_message(r));
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Data(ap, KRB_FORWARD_REJECT, errbuf, -1);
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if (auth_debug_mode)
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printf("Could not read forwarded credentials\r\n");
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}
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else
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Data(ap, KRB_FORWARD_ACCEPT, 0, 0);
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if (auth_debug_mode)
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printf("Forwarded credentials obtained\r\n");
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break;
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#endif /* FORWARD */
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default:
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if (auth_debug_mode)
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printf("Unknown Kerberos option %d\r\n", data[-1]);
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Data(ap, KRB_REJECT, 0, 0);
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break;
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}
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}
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void
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kerberos5_reply(ap, data, cnt)
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Authenticator *ap;
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unsigned char *data;
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int cnt;
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{
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Session_Key skey;
|
|
static int mutual_complete = 0;
|
|
|
|
if (cnt-- < 1)
|
|
return;
|
|
switch (*data++) {
|
|
case KRB_REJECT:
|
|
if (cnt > 0) {
|
|
printf("[ Kerberos V5 refuses authentication because %.*s ]\r\n",
|
|
cnt, data);
|
|
} else
|
|
printf("[ Kerberos V5 refuses authentication ]\r\n");
|
|
auth_send_retry();
|
|
return;
|
|
case KRB_ACCEPT:
|
|
if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL &&
|
|
!mutual_complete) {
|
|
printf("[ Kerberos V5 accepted you, but didn't provide mutual authentication! ]\n");
|
|
auth_send_retry();
|
|
return;
|
|
}
|
|
if (cnt)
|
|
printf("[ Kerberos V5 accepts you as ``%.*s'' ]\n", cnt, data);
|
|
else
|
|
printf("[ Kerberos V5 accepts you ]\n");
|
|
auth_finished(ap, AUTH_USER);
|
|
#ifdef FORWARD
|
|
if (forward_flags & OPTS_FORWARD_CREDS)
|
|
kerberos5_forward(ap);
|
|
#endif /* FORWARD */
|
|
break;
|
|
case KRB_RESPONSE:
|
|
if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) {
|
|
/* the rest of the reply should contain a krb_ap_rep */
|
|
krb5_ap_rep_enc_part *reply;
|
|
krb5_data inbuf;
|
|
krb5_error_code r;
|
|
krb5_keyblock tmpkey;
|
|
|
|
inbuf.length = cnt;
|
|
inbuf.data = (char *)data;
|
|
|
|
tmpkey.keytype = KEYTYPE_DES;
|
|
tmpkey.contents = session_key;
|
|
tmpkey.length = sizeof(Block);
|
|
|
|
if (r = krb5_rd_rep(&inbuf, &tmpkey, &reply)) {
|
|
printf("[ Mutual authentication failed: %s ]\n",
|
|
error_message(r));
|
|
auth_send_retry();
|
|
return;
|
|
}
|
|
if (reply->ctime != authenticator.ctime ||
|
|
reply->cusec != authenticator.cusec) {
|
|
printf("[ Mutual authentication failed (mismatched KRB_AP_REP) ]\n");
|
|
auth_send_retry();
|
|
return;
|
|
}
|
|
krb5_free_ap_rep_enc_part(reply);
|
|
#ifdef ENCRYPTION
|
|
skey.type = SK_DES;
|
|
skey.length = 8;
|
|
skey.data = session_key;
|
|
encrypt_session_key(&skey, 0);
|
|
#endif /* ENCRYPTION */
|
|
mutual_complete = 1;
|
|
}
|
|
return;
|
|
#ifdef FORWARD
|
|
case KRB_FORWARD_ACCEPT:
|
|
printf("[ Kerberos V5 accepted forwarded credentials ]\n");
|
|
return;
|
|
case KRB_FORWARD_REJECT:
|
|
printf("[ Kerberos V5 refuses forwarded credentials because %.*s ]\r\n",
|
|
cnt, data);
|
|
return;
|
|
#endif /* FORWARD */
|
|
default:
|
|
if (auth_debug_mode)
|
|
printf("Unknown Kerberos option %d\r\n", data[-1]);
|
|
return;
|
|
}
|
|
}
|
|
|
|
int
|
|
kerberos5_status(ap, name, level)
|
|
Authenticator *ap;
|
|
char *name;
|
|
int level;
|
|
{
|
|
if (level < AUTH_USER)
|
|
return(level);
|
|
|
|
if (UserNameRequested &&
|
|
krb5_kuserok(authdat->ticket->enc_part2->client, UserNameRequested))
|
|
{
|
|
strcpy(name, UserNameRequested);
|
|
return(AUTH_VALID);
|
|
} else
|
|
return(AUTH_USER);
|
|
}
|
|
|
|
#define BUMP(buf, len) while (*(buf)) {++(buf), --(len);}
|
|
#define ADDC(buf, len, c) if ((len) > 0) {*(buf)++ = (c); --(len);}
|
|
|
|
void
|
|
kerberos5_printsub(data, cnt, buf, buflen)
|
|
unsigned char *data, *buf;
|
|
int cnt, buflen;
|
|
{
|
|
char lbuf[32];
|
|
register int i;
|
|
|
|
buf[buflen-1] = '\0'; /* make sure its NULL terminated */
|
|
buflen -= 1;
|
|
|
|
switch(data[3]) {
|
|
case KRB_REJECT: /* Rejected (reason might follow) */
|
|
strncpy((char *)buf, " REJECT ", buflen);
|
|
goto common;
|
|
|
|
case KRB_ACCEPT: /* Accepted (name might follow) */
|
|
strncpy((char *)buf, " ACCEPT ", buflen);
|
|
common:
|
|
BUMP(buf, buflen);
|
|
if (cnt <= 4)
|
|
break;
|
|
ADDC(buf, buflen, '"');
|
|
for (i = 4; i < cnt; i++)
|
|
ADDC(buf, buflen, data[i]);
|
|
ADDC(buf, buflen, '"');
|
|
ADDC(buf, buflen, '\0');
|
|
break;
|
|
|
|
|
|
case KRB_AUTH: /* Authentication data follows */
|
|
strncpy((char *)buf, " AUTH", buflen);
|
|
goto common2;
|
|
|
|
case KRB_RESPONSE:
|
|
strncpy((char *)buf, " RESPONSE", buflen);
|
|
goto common2;
|
|
|
|
#ifdef FORWARD
|
|
case KRB_FORWARD: /* Forwarded credentials follow */
|
|
strncpy((char *)buf, " FORWARD", buflen);
|
|
goto common2;
|
|
|
|
case KRB_FORWARD_ACCEPT: /* Forwarded credentials accepted */
|
|
strncpy((char *)buf, " FORWARD_ACCEPT", buflen);
|
|
goto common2;
|
|
|
|
case KRB_FORWARD_REJECT: /* Forwarded credentials rejected */
|
|
/* (reason might follow) */
|
|
strncpy((char *)buf, " FORWARD_REJECT", buflen);
|
|
goto common2;
|
|
#endif /* FORWARD */
|
|
|
|
default:
|
|
sprintf(lbuf, " %d (unknown)", data[3]);
|
|
strncpy((char *)buf, lbuf, buflen);
|
|
common2:
|
|
BUMP(buf, buflen);
|
|
for (i = 4; i < cnt; i++) {
|
|
sprintf(lbuf, " %d", data[i]);
|
|
strncpy((char *)buf, lbuf, buflen);
|
|
BUMP(buf, buflen);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
#ifdef FORWARD
|
|
void
|
|
kerberos5_forward(ap)
|
|
Authenticator *ap;
|
|
{
|
|
struct hostent *hp;
|
|
krb5_creds *local_creds;
|
|
krb5_error_code r;
|
|
krb5_data forw_creds;
|
|
extern krb5_cksumtype krb5_kdc_req_sumtype;
|
|
krb5_ccache ccache;
|
|
int i;
|
|
|
|
if (!(local_creds = (krb5_creds *)
|
|
calloc(1, sizeof(*local_creds)))) {
|
|
if (auth_debug_mode)
|
|
printf("Kerberos V5: could not allocate memory for credentials\r\n");
|
|
return;
|
|
}
|
|
|
|
if (r = krb5_sname_to_principal(RemoteHostName, "host", 1,
|
|
&local_creds->server)) {
|
|
if (auth_debug_mode)
|
|
printf("Kerberos V5: could not build server name - %s\r\n",
|
|
error_message(r));
|
|
krb5_free_creds(local_creds);
|
|
return;
|
|
}
|
|
|
|
if (r = krb5_cc_default(&ccache)) {
|
|
if (auth_debug_mode)
|
|
printf("Kerberos V5: could not get default ccache - %s\r\n",
|
|
error_message(r));
|
|
krb5_free_creds(local_creds);
|
|
return;
|
|
}
|
|
|
|
if (r = krb5_cc_get_principal(ccache, &local_creds->client)) {
|
|
if (auth_debug_mode)
|
|
printf("Kerberos V5: could not get default principal - %s\r\n",
|
|
error_message(r));
|
|
krb5_free_creds(local_creds);
|
|
return;
|
|
}
|
|
|
|
/* Get ticket from credentials cache */
|
|
if (r = krb5_get_credentials(KRB5_GC_CACHED, ccache, local_creds)) {
|
|
if (auth_debug_mode)
|
|
printf("Kerberos V5: could not obtain credentials - %s\r\n",
|
|
error_message(r));
|
|
krb5_free_creds(local_creds);
|
|
return;
|
|
}
|
|
|
|
if (r = get_for_creds(ETYPE_DES_CBC_CRC,
|
|
krb5_kdc_req_sumtype,
|
|
RemoteHostName,
|
|
local_creds->client,
|
|
&local_creds->keyblock,
|
|
forward_flags & OPTS_FORWARDABLE_CREDS,
|
|
&forw_creds)) {
|
|
if (auth_debug_mode)
|
|
printf("Kerberos V5: error getting forwarded creds - %s\r\n",
|
|
error_message(r));
|
|
krb5_free_creds(local_creds);
|
|
return;
|
|
}
|
|
|
|
/* Send forwarded credentials */
|
|
if (!Data(ap, KRB_FORWARD, forw_creds.data, forw_creds.length)) {
|
|
if (auth_debug_mode)
|
|
printf("Not enough room for authentication data\r\n");
|
|
}
|
|
else {
|
|
if (auth_debug_mode)
|
|
printf("Forwarded local Kerberos V5 credentials to server\r\n");
|
|
}
|
|
|
|
krb5_free_creds(local_creds);
|
|
}
|
|
#endif /* FORWARD */
|
|
|
|
#endif /* KRB5 */
|