1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/kernel.h> 35 #include <sys/kobj.h> 36 #include <sys/malloc.h> 37 #include <sys/mbuf.h> 38 39 #include <kgssapi/gssapi.h> 40 #include <kgssapi/gssapi_impl.h> 41 42 #include "kgss_if.h" 43 44 OM_uint32 45 gss_unwrap(OM_uint32 *minor_status, 46 const gss_ctx_id_t ctx, 47 const gss_buffer_t input_message_buffer, 48 gss_buffer_t output_message_buffer, 49 int *conf_state, 50 gss_qop_t *qop_state) 51 { 52 OM_uint32 maj_stat; 53 struct mbuf *m; 54 55 if (!ctx) { 56 *minor_status = 0; 57 return (GSS_S_NO_CONTEXT); 58 } 59 60 MGET(m, M_WAITOK, MT_DATA); 61 if (input_message_buffer->length > MLEN) 62 MCLGET(m, M_WAITOK); 63 m_append(m, input_message_buffer->length, input_message_buffer->value); 64 65 maj_stat = KGSS_UNWRAP(ctx, minor_status, &m, conf_state, qop_state); 66 67 /* 68 * On success, m is the wrapped message, on failure, m is 69 * freed. 70 */ 71 if (maj_stat == GSS_S_COMPLETE) { 72 output_message_buffer->length = m_length(m, NULL); 73 output_message_buffer->value = 74 malloc(output_message_buffer->length, 75 M_GSSAPI, M_WAITOK); 76 m_copydata(m, 0, output_message_buffer->length, 77 output_message_buffer->value); 78 m_freem(m); 79 } 80 81 return (maj_stat); 82 } 83 84 OM_uint32 85 gss_unwrap_mbuf(OM_uint32 *minor_status, 86 const gss_ctx_id_t ctx, 87 struct mbuf **mp, 88 int *conf_state, 89 gss_qop_t *qop_state) 90 { 91 92 if (!ctx) { 93 *minor_status = 0; 94 return (GSS_S_NO_CONTEXT); 95 } 96 97 return (KGSS_UNWRAP(ctx, minor_status, mp, conf_state, qop_state)); 98 } 99 100