1/*- 2 * Copyright (c) 2005 Doug Rabson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/lib/libgssapi/gss_import_sec_context.c,v 1.1 2005/12/29 14:40:20 dfr Exp $ 27 */ 28 29#include "mech_locl.h" 30 31GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL 32gss_import_sec_context(OM_uint32 *minor_status, 33 const gss_buffer_t interprocess_token, 34 gss_ctx_id_t *context_handle) 35{ 36 OM_uint32 major_status; 37 gssapi_mech_interface m; 38 struct _gss_context *ctx; 39 gss_OID_desc mech_oid; 40 gss_buffer_desc buf; 41 unsigned char *p; 42 size_t len; 43 44 *minor_status = 0; 45 *context_handle = GSS_C_NO_CONTEXT; 46 47 /* 48 * We added an oid to the front of the token in 49 * gss_export_sec_context. 50 */ 51 p = interprocess_token->value; 52 len = interprocess_token->length; 53 if (len < 2) 54 return (GSS_S_DEFECTIVE_TOKEN); 55 mech_oid.length = (p[0] << 8) | p[1]; 56 if (len < mech_oid.length + 2) 57 return (GSS_S_DEFECTIVE_TOKEN); 58 mech_oid.elements = p + 2; 59 buf.length = len - 2 - mech_oid.length; 60 buf.value = p + 2 + mech_oid.length; 61 62 m = __gss_get_mechanism(&mech_oid); 63 if (!m) 64 return (GSS_S_DEFECTIVE_TOKEN); 65 66 ctx = malloc(sizeof(struct _gss_context)); 67 if (!ctx) { 68 *minor_status = ENOMEM; 69 return (GSS_S_FAILURE); 70 } 71 ctx->gc_mech = m; 72 major_status = m->gm_import_sec_context(minor_status, 73 &buf, &ctx->gc_ctx); 74 if (major_status != GSS_S_COMPLETE) { 75 _gss_mg_error(m, major_status, *minor_status); 76 free(ctx); 77 } else { 78 *context_handle = (gss_ctx_id_t) ctx; 79 } 80 81 return (major_status); 82} 83