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 <errno.h> 34 35 #include "mech_switch.h" 36 #include "context.h" 37 38 OM_uint32 39 gss_import_sec_context(OM_uint32 *minor_status, 40 const gss_buffer_t interprocess_token, 41 gss_ctx_id_t *context_handle) 42 { 43 OM_uint32 major_status; 44 struct _gss_mech_switch *m; 45 struct _gss_context *ctx; 46 gss_OID_desc mech_oid; 47 gss_buffer_desc buf; 48 unsigned char *p; 49 size_t len; 50 51 *minor_status = 0; 52 *context_handle = GSS_C_NO_CONTEXT; 53 54 /* 55 * We added an oid to the front of the token in 56 * gss_export_sec_context. 57 */ 58 p = interprocess_token->value; 59 len = interprocess_token->length; 60 if (len < 2) 61 return (GSS_S_DEFECTIVE_TOKEN); 62 mech_oid.length = (p[0] << 8) | p[1]; 63 if (len < mech_oid.length + 2) 64 return (GSS_S_DEFECTIVE_TOKEN); 65 mech_oid.elements = p + 2; 66 buf.length = len - 2 - mech_oid.length; 67 buf.value = p + 2 + mech_oid.length; 68 69 m = _gss_find_mech_switch(&mech_oid); 70 if (!m) 71 return (GSS_S_DEFECTIVE_TOKEN); 72 73 ctx = malloc(sizeof(struct _gss_context)); 74 if (!ctx) { 75 *minor_status = ENOMEM; 76 return (GSS_S_FAILURE); 77 } 78 ctx->gc_mech = m; 79 major_status = m->gm_import_sec_context(minor_status, 80 &buf, &ctx->gc_ctx); 81 if (major_status != GSS_S_COMPLETE) { 82 _gss_mg_error(m, major_status, *minor_status); 83 free(ctx); 84 } else { 85 *context_handle = (gss_ctx_id_t) ctx; 86 } 87 88 return (major_status); 89 } 90