1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 29 #include <gssapi/gssapi.h> 30 #include <stdlib.h> 31 #include <string.h> 32 #include <errno.h> 33 34 #include "mech_switch.h" 35 #include "context.h" 36 #include "utils.h" 37 38 OM_uint32 39 gss_export_sec_context(OM_uint32 *minor_status, 40 gss_ctx_id_t *context_handle, 41 gss_buffer_t interprocess_token) 42 { 43 OM_uint32 major_status; 44 struct _gss_context *ctx = (struct _gss_context *) *context_handle; 45 struct _gss_mech_switch *m = ctx->gc_mech; 46 gss_buffer_desc buf; 47 48 _gss_buffer_zero(interprocess_token); 49 50 major_status = m->gm_export_sec_context(minor_status, 51 &ctx->gc_ctx, &buf); 52 53 if (major_status == GSS_S_COMPLETE) { 54 unsigned char *p; 55 56 free(ctx); 57 *context_handle = GSS_C_NO_CONTEXT; 58 interprocess_token->length = buf.length 59 + 2 + m->gm_mech_oid.length; 60 interprocess_token->value = malloc(interprocess_token->length); 61 if (!interprocess_token->value) { 62 /* 63 * We are in trouble here - the context is 64 * already gone. This is allowed as long as we 65 * set the caller's context_handle to 66 * GSS_C_NO_CONTEXT, which we did above. 67 * Return GSS_S_FAILURE. 68 */ 69 _gss_buffer_zero(interprocess_token); 70 *minor_status = ENOMEM; 71 return (GSS_S_FAILURE); 72 } 73 p = interprocess_token->value; 74 p[0] = m->gm_mech_oid.length >> 8; 75 p[1] = m->gm_mech_oid.length; 76 memcpy(p + 2, m->gm_mech_oid.elements, m->gm_mech_oid.length); 77 memcpy(p + 2 + m->gm_mech_oid.length, buf.value, buf.length); 78 gss_release_buffer(minor_status, &buf); 79 } else { 80 _gss_mg_error(m, major_status, *minor_status); 81 } 82 83 return (major_status); 84 } 85