1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/ 5 * Authors: Doug Rabson <dfr@rabson.org> 6 * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org> 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/param.h> 31 #include <sys/kernel.h> 32 #include <sys/kobj.h> 33 #include <sys/malloc.h> 34 #include <sys/mbuf.h> 35 36 #include <kgssapi/gssapi.h> 37 #include <kgssapi/gssapi_impl.h> 38 39 #include "kgss_if.h" 40 41 OM_uint32 gss_unwrap(OM_uint32 * minor_status,const gss_ctx_id_t ctx,const gss_buffer_t input_message_buffer,gss_buffer_t output_message_buffer,int * conf_state,gss_qop_t * qop_state)42 gss_unwrap(OM_uint32 *minor_status, 43 const gss_ctx_id_t ctx, 44 const gss_buffer_t input_message_buffer, 45 gss_buffer_t output_message_buffer, 46 int *conf_state, 47 gss_qop_t *qop_state) 48 { 49 OM_uint32 maj_stat; 50 struct mbuf *m; 51 52 if (!ctx) { 53 *minor_status = 0; 54 return (GSS_S_NO_CONTEXT); 55 } 56 57 MGET(m, M_WAITOK, MT_DATA); 58 if (input_message_buffer->length > MLEN) 59 MCLGET(m, M_WAITOK); 60 m_append(m, input_message_buffer->length, input_message_buffer->value); 61 62 maj_stat = KGSS_UNWRAP(ctx, minor_status, &m, conf_state, qop_state); 63 64 /* 65 * On success, m is the wrapped message, on failure, m is 66 * freed. 67 */ 68 if (maj_stat == GSS_S_COMPLETE) { 69 output_message_buffer->length = m_length(m, NULL); 70 output_message_buffer->value = 71 malloc(output_message_buffer->length, 72 M_GSSAPI, M_WAITOK); 73 m_copydata(m, 0, output_message_buffer->length, 74 output_message_buffer->value); 75 m_freem(m); 76 } 77 78 return (maj_stat); 79 } 80 81 OM_uint32 gss_unwrap_mbuf(OM_uint32 * minor_status,const gss_ctx_id_t ctx,struct mbuf ** mp,int * conf_state,gss_qop_t * qop_state)82 gss_unwrap_mbuf(OM_uint32 *minor_status, 83 const gss_ctx_id_t ctx, 84 struct mbuf **mp, 85 int *conf_state, 86 gss_qop_t *qop_state) 87 { 88 89 if (!ctx) { 90 *minor_status = 0; 91 return (GSS_S_NO_CONTEXT); 92 } 93 94 return (KGSS_UNWRAP(ctx, minor_status, mp, conf_state, qop_state)); 95 } 96