usr/src/lib/libgss/g_sign.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
  23  */
  24
  25 /*
  26  *  glue routine gss_sign
  27  */
  28
  29 #include <mechglueP.h>
  30 #include "gssapiP_generic.h"
  31
  32 static OM_uint32
  33 val_sign_args(
  34         OM_uint32 *minor_status,
  35         gss_ctx_id_t context_handle,
  36         gss_buffer_t message_buffer,
  37         gss_buffer_t msg_token)
  38 {
  39
  40         /* Initialize outputs. */
  41
  42         if (minor_status != NULL)
  43                 *minor_status = 0;
  44
  45         if (msg_token != GSS_C_NO_BUFFER) {
  46                 msg_token->value = NULL;
  47                 msg_token->length = 0;
  48         }
  49
  50         /* Validate arguments. */
  51
  52         if (minor_status == NULL)
  53                 return (GSS_S_CALL_INACCESSIBLE_WRITE);
  54
  55         if (context_handle == GSS_C_NO_CONTEXT)
  56                 return (GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CONTEXT);
  57
  58         if (message_buffer == GSS_C_NO_BUFFER)
  59                 return (GSS_S_CALL_INACCESSIBLE_READ);
  60
  61         if (msg_token == GSS_C_NO_BUFFER)
  62                 return (GSS_S_CALL_INACCESSIBLE_WRITE);
  63
  64         return (GSS_S_COMPLETE);
  65 }
  66
  67 OM_uint32
  68 gss_sign(minor_status,
  69         context_handle,
  70         qop_req,
  71         message_buffer,
  72         msg_token)
  73
  74 OM_uint32 *             minor_status;
  75 gss_ctx_id_t            context_handle;
  76 int                     qop_req;
  77 gss_buffer_t            message_buffer;
  78 gss_buffer_t            msg_token;
  79
  80 {
  81         OM_uint32               status;
  82         gss_union_ctx_id_t      ctx;
  83         gss_mechanism           mech;
  84
  85         status = val_sign_args(minor_status, context_handle,
  86                         message_buffer, msg_token);
  87         if (status != GSS_S_COMPLETE)
  88                 return (status);
  89
  90         /*
  91          * select the approprate underlying mechanism routine and
  92          * call it.
  93          */
  94
  95         ctx = (gss_union_ctx_id_t) context_handle;
  96         mech = __gss_get_mechanism(ctx->mech_type);
  97
  98         if (mech) {
  99                 if (mech->gss_sign) {
 100                         status = mech->gss_sign(
 101                                                 mech->context,
 102                                                 minor_status,
 103                                                 ctx->internal_ctx_id,
 104                                                 qop_req,
 105                                                 message_buffer,
 106                                                 msg_token);
 107                         if (status != GSS_S_COMPLETE)
 108                                 map_error(minor_status, mech);
 109                 } else
 110                         status = GSS_S_UNAVAILABLE;
 111
 112                 return (status);
 113         }
 114
 115         return (GSS_S_BAD_MECH);
 116 }
 117
 118 OM_uint32
 119 gss_get_mic(minor_status,
 120                 context_handle,
 121                 qop_req,
 122                 message_buffer,
 123                 msg_token)
 124
 125 OM_uint32 *             minor_status;
 126 const gss_ctx_id_t      context_handle;
 127 gss_qop_t               qop_req;
 128 const gss_buffer_t      message_buffer;
 129 gss_buffer_t            msg_token;
 130
 131 {
 132         return (gss_sign(minor_status, (gss_ctx_id_t)context_handle,
 133                 (int) qop_req, (gss_buffer_t)message_buffer, msg_token));
 134 }