gss_unwrap.c revision 285830
11902Swollman/*- 250476Speter * Copyright (c) 2008 Isilon Inc http://www.isilon.com/ 318718Swosch * Authors: Doug Rabson <dfr@rabson.org> 471216Sru * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org> 571216Sru * 671216Sru * Redistribution and use in source and binary forms, with or without 771216Sru * modification, are permitted provided that the following conditions 874462Salfred * are met: 974462Salfred * 1. Redistributions of source code must retain the above copyright 1074462Salfred * notice, this list of conditions and the following disclaimer. 1174462Salfred * 2. Redistributions in binary form must reproduce the above copyright 1274462Salfred * notice, this list of conditions and the following disclaimer in the 1374462Salfred * documentation and/or other materials provided with the distribution. 1474462Salfred * 1574462Salfred * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1674462Salfred * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1774462Salfred * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1874462Salfred * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1974462Salfred * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2074462Salfred * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2174462Salfred * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2274462Salfred * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2374462Salfred * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2474462Salfred * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2574462Salfred * SUCH DAMAGE. 2674462Salfred */ 2774462Salfred 2874462Salfred#include <sys/cdefs.h> 2974462Salfred__FBSDID("$FreeBSD: releng/10.2/sys/kgssapi/gss_unwrap.c 184588 2008-11-03 10:38:00Z dfr $"); 3074462Salfred 3174462Salfred#include <sys/param.h> 3274462Salfred#include <sys/kernel.h> 3374462Salfred#include <sys/kobj.h> 34223877Skevlo#include <sys/malloc.h> 3574462Salfred#include <sys/mbuf.h> 3674462Salfred 3774462Salfred#include <kgssapi/gssapi.h> 3874462Salfred#include <kgssapi/gssapi_impl.h> 3974462Salfred 4074462Salfred#include "kgss_if.h" 4174462Salfred 4274462SalfredOM_uint32 4374462Salfredgss_unwrap(OM_uint32 *minor_status, 4474462Salfred const gss_ctx_id_t ctx, 4574462Salfred const gss_buffer_t input_message_buffer, 4674462Salfred gss_buffer_t output_message_buffer, 4771216Sru int *conf_state, 4871216Sru gss_qop_t *qop_state) 4971216Sru{ 5071216Sru OM_uint32 maj_stat; 5184306Sru struct mbuf *m; 5284306Sru 5371216Sru if (!ctx) { 5471216Sru *minor_status = 0; 5571216Sru return (GSS_S_NO_CONTEXT); 5671216Sru } 5771216Sru 581902Swollman MGET(m, M_WAITOK, MT_DATA); 591902Swollman if (input_message_buffer->length > MLEN) 601902Swollman MCLGET(m, M_WAITOK); 611902Swollman m_append(m, input_message_buffer->length, input_message_buffer->value); 6271216Sru 6371216Sru maj_stat = KGSS_UNWRAP(ctx, minor_status, &m, conf_state, qop_state); 6471216Sru 6571216Sru /* 6671216Sru * On success, m is the wrapped message, on failure, m is 6771216Sru * freed. 6871216Sru */ 6971216Sru if (maj_stat == GSS_S_COMPLETE) { 7071216Sru output_message_buffer->length = m_length(m, NULL); 7171216Sru output_message_buffer->value = 7271216Sru malloc(output_message_buffer->length, 7371216Sru M_GSSAPI, M_WAITOK); 7471216Sru m_copydata(m, 0, output_message_buffer->length, 7571216Sru output_message_buffer->value); 7671216Sru m_freem(m); 7771216Sru } 781902Swollman 791902Swollman return (maj_stat); 8057686Ssheldonh} 8157686Ssheldonh 8271216SruOM_uint32 83108087Srugss_unwrap_mbuf(OM_uint32 *minor_status, 841902Swollman const gss_ctx_id_t ctx, 8571216Sru struct mbuf **mp, 861902Swollman int *conf_state, 871902Swollman gss_qop_t *qop_state) 8871216Sru{ 89108087Sru 9071216Sru if (!ctx) { 91108087Sru *minor_status = 0; 921902Swollman return (GSS_S_NO_CONTEXT); 9371216Sru } 941902Swollman 9571216Sru return (KGSS_UNWRAP(ctx, minor_status, mp, conf_state, qop_state)); 961902Swollman} 9771216Sru 981902Swollman