1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2005 Doug Rabson 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #include <gssapi/gssapi.h> 32 #include <stdlib.h> 33 #include <string.h> 34 #include <errno.h> 35 36 #include "mech_switch.h" 37 #include "context.h" 38 #include "utils.h" 39 40 OM_uint32 41 gss_export_sec_context(OM_uint32 *minor_status, 42 gss_ctx_id_t *context_handle, 43 gss_buffer_t interprocess_token) 44 { 45 OM_uint32 major_status; 46 struct _gss_context *ctx = (struct _gss_context *) *context_handle; 47 struct _gss_mech_switch *m = ctx->gc_mech; 48 gss_buffer_desc buf; 49 50 _gss_buffer_zero(interprocess_token); 51 52 major_status = m->gm_export_sec_context(minor_status, 53 &ctx->gc_ctx, &buf); 54 55 if (major_status == GSS_S_COMPLETE) { 56 unsigned char *p; 57 58 free(ctx); 59 *context_handle = GSS_C_NO_CONTEXT; 60 interprocess_token->length = buf.length 61 + 2 + m->gm_mech_oid.length; 62 interprocess_token->value = malloc(interprocess_token->length); 63 if (!interprocess_token->value) { 64 /* 65 * We are in trouble here - the context is 66 * already gone. This is allowed as long as we 67 * set the caller's context_handle to 68 * GSS_C_NO_CONTEXT, which we did above. 69 * Return GSS_S_FAILURE. 70 */ 71 _gss_buffer_zero(interprocess_token); 72 *minor_status = ENOMEM; 73 return (GSS_S_FAILURE); 74 } 75 p = interprocess_token->value; 76 p[0] = m->gm_mech_oid.length >> 8; 77 p[1] = m->gm_mech_oid.length; 78 memcpy(p + 2, m->gm_mech_oid.elements, m->gm_mech_oid.length); 79 memcpy(p + 2 + m->gm_mech_oid.length, buf.value, buf.length); 80 gss_release_buffer(minor_status, &buf); 81 } else { 82 _gss_mg_error(m, major_status, *minor_status); 83 } 84 85 return (major_status); 86 } 87