usr/src/lib/libgss/g_dup_name.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  *  routine gss_duplicate_name
  27  *
  28  * This routine does not rely on mechanism implementation of this
  29  * name, but instead uses mechanism specific gss_import_name routine.
  30  */
  31
  32 #include <mechglueP.h>
  33 #include "gssapiP_generic.h"
  34 #ifdef HAVE_STDLIB_H
  35 #include <stdlib.h>
  36 #endif
  37 #include <string.h>
  38 #include <errno.h>
  39
  40 static OM_uint32
  41 val_dup_name_args(
  42         OM_uint32 *minor_status,
  43         const gss_name_t src_name,
  44         gss_name_t *dest_name)
  45 {
  46
  47         /* Initialize outputs. */
  48
  49         if (minor_status != NULL)
  50                 *minor_status = 0;
  51
  52         if (dest_name != NULL)
  53                 *dest_name = GSS_C_NO_NAME;
  54
  55         /* Validate arguments. */
  56
  57         if (minor_status == NULL)
  58                 return (GSS_S_CALL_INACCESSIBLE_WRITE);
  59
  60         /* if output_name is NULL, simply return */
  61         if (dest_name == NULL)
  62                 return (GSS_S_CALL_INACCESSIBLE_WRITE);
  63
  64         if (src_name == GSS_C_NO_NAME)
  65                 return (GSS_S_CALL_INACCESSIBLE_READ | GSS_S_BAD_NAME);
  66
  67         return (GSS_S_COMPLETE);
  68 }
  69
  70 OM_uint32
  71 gss_duplicate_name(OM_uint32 *minor_status, const gss_name_t src_name,
  72     gss_name_t *dest_name)
  73 {
  74         gss_union_name_t src_union, dest_union;
  75         OM_uint32 major_status = GSS_S_FAILURE;
  76
  77         major_status = val_dup_name_args(minor_status, src_name, dest_name);
  78         if (major_status != GSS_S_COMPLETE)
  79                 return (major_status);
  80
  81         major_status = GSS_S_FAILURE;
  82
  83         src_union = (gss_union_name_t)src_name;
  84
  85         /*
  86          * First create the union name struct that will hold the external
  87          * name and the name type.
  88          */
  89         dest_union = (gss_union_name_t)malloc(sizeof (gss_union_name_desc));
  90         if (!dest_union)
  91                 goto allocation_failure;
  92
  93         dest_union->mech_type = 0;
  94         dest_union->mech_name = 0;
  95         dest_union->name_type = 0;
  96         dest_union->external_name = 0;
  97
  98         /* Now copy the external representaion */
  99         if (gssint_create_copy_buffer(src_union->external_name,
 100             &dest_union->external_name, 0))
 101                 goto allocation_failure;
 102
 103         if (src_union->name_type != GSS_C_NULL_OID) {
 104                 major_status = generic_gss_copy_oid(minor_status,
 105                     src_union->name_type, &dest_union->name_type);
 106                 if (major_status != GSS_S_COMPLETE) {
 107                         map_errcode(minor_status);
 108                         goto allocation_failure;
 109                 }
 110         }
 111
 112         /*
 113          * See if source name is mechanim specific, if so then need to import it
 114          */
 115         if (src_union->mech_type) {
 116                 major_status = generic_gss_copy_oid(minor_status,
 117                     src_union->mech_type, &dest_union->mech_type);
 118                 if (major_status != GSS_S_COMPLETE) {
 119                         map_errcode(minor_status);
 120                         goto allocation_failure;
 121                 }
 122
 123                 major_status = __gss_import_internal_name(minor_status,
 124                     dest_union->mech_type, dest_union, &dest_union->mech_name);
 125                 if (major_status != GSS_S_COMPLETE)
 126                         goto allocation_failure;
 127         }
 128
 129
 130         *dest_name = (gss_name_t)dest_union;
 131         return (GSS_S_COMPLETE);
 132
 133 allocation_failure:
 134         if (dest_union) {
 135                 if (dest_union->external_name) {
 136                         free(dest_union->external_name->value);
 137                         free(dest_union->external_name);
 138                 }
 139                 if (dest_union->name_type) {
 140                         (void) generic_gss_release_oid(minor_status,
 141                             &dest_union->name_type);
 142                 }
 143                 if (dest_union->mech_name) {
 144                         (void) __gss_release_internal_name(minor_status,
 145                             dest_union->mech_type, &dest_union->mech_name);
 146                 }
 147                 if (dest_union->mech_type) {
 148                         (void) generic_gss_release_oid(minor_status,
 149                             &dest_union->mech_type);
 150                 }
 151                 free(dest_union);
 152         }
 153         return (major_status);
 154 } /*    gss_duplicate_name      */