usr/src/lib/libgss/g_canon_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_canonicalize_name
  27  *
  28  * This routine is used to produce a mechanism specific
  29  * representation of name that has been previously
  30  * imported with gss_import_name.  The routine uses the mechanism
  31  * specific implementation of gss_import_name to implement this
  32  * function.
  33  *
  34  * We allow a NULL output_name, in which case we modify the
  35  * input_name to include the mechanism specific name.
  36  */
  37
  38 #include <mechglueP.h>
  39 #include "gssapiP_generic.h"
  40 #ifdef HAVE_STDLIB_H
  41 #include <stdlib.h>
  42 #endif
  43 #include <string.h>
  44 #include <errno.h>
  45 #include <syslog.h>
  46
  47 static OM_uint32 val_canon_name_args(
  48         OM_uint32 *minor_status,
  49         const gss_name_t input_name,
  50         const gss_OID mech_type,
  51         gss_name_t *output_name)
  52 {
  53
  54         /* Initialize outputs. */
  55
  56         if (minor_status != NULL)
  57                 *minor_status = 0;
  58
  59         if (output_name != NULL)
  60                 *output_name = GSS_C_NO_NAME;
  61
  62         /* Validate arguments. */
  63
  64         if (minor_status == NULL)
  65                 return (GSS_S_CALL_INACCESSIBLE_WRITE);
  66
  67         if (input_name == GSS_C_NO_NAME || mech_type == GSS_C_NULL_OID)
  68                 return (GSS_S_CALL_INACCESSIBLE_READ);
  69
  70         return (GSS_S_COMPLETE);
  71 }
  72
  73 OM_uint32
  74 gss_canonicalize_name(minor_status,
  75                                 input_name,
  76                                 mech_type,
  77                                 output_name)
  78 OM_uint32 *minor_status;
  79 const gss_name_t input_name;
  80 const gss_OID mech_type;
  81 gss_name_t *output_name;
  82 {
  83         gss_union_name_t in_union, out_union = NULL, dest_union = NULL;
  84         OM_uint32 major_status = GSS_S_FAILURE;
  85         /* Solaris Kerberos - need to preserve more important minor_status */
  86         OM_uint32 tmp_status = 0;
  87
  88         major_status = val_canon_name_args(minor_status,
  89                                         input_name,
  90                                         mech_type,
  91                                         output_name);
  92         if (major_status != GSS_S_COMPLETE)
  93                 return (major_status);
  94
  95         /* Initial value needed below. */
  96         major_status = GSS_S_FAILURE;
  97
  98         in_union = (gss_union_name_t)input_name;
  99         /*
 100          * If the caller wants to reuse the name, and the name has already
 101          * been converted, then there is nothing for us to do.
 102          */
 103         if (!output_name && in_union->mech_type &&
 104                 g_OID_equal(in_union->mech_type, mech_type))
 105                 return (GSS_S_COMPLETE);
 106
 107         /* ok, then we need to do something - start by creating data struct */
 108         if (output_name) {
 109                 out_union =
 110                         (gss_union_name_t)malloc(sizeof (gss_union_name_desc));
 111                 if (!out_union)
 112                         goto allocation_failure;
 113
 114                 out_union->mech_type = 0;
 115                 out_union->mech_name = 0;
 116                 out_union->name_type = 0;
 117                 out_union->external_name = 0;
 118
 119                 /* Allocate the buffer for the user specified representation */
 120                 if (gssint_create_copy_buffer(in_union->external_name,
 121                                 &out_union->external_name, 1))
 122                         goto allocation_failure;
 123
 124                 if (in_union->name_type != GSS_C_NULL_OID) {
 125                         major_status = generic_gss_copy_oid(minor_status,
 126                                                         in_union->name_type,
 127                                                         &out_union->name_type);
 128                         if (major_status) {
 129                                 map_errcode(minor_status);
 130                                 goto allocation_failure;
 131                         }
 132                 }
 133         }
 134
 135         /*
 136          * might need to delete any old mechanism names if we are
 137          * reusing the buffer.
 138          */
 139         if (!output_name) {
 140                 if (in_union->mech_type) {
 141                         (void) __gss_release_internal_name(minor_status,
 142                                                         in_union->mech_type,
 143                                                         &in_union->mech_name);
 144                         (void) gss_release_oid(minor_status,
 145                                             &in_union->mech_type);
 146                         in_union->mech_type = 0;
 147                 }
 148                 dest_union = in_union;
 149         } else
 150                 dest_union = out_union;
 151
 152         /* now let's create the new mech name */
 153         if (major_status = generic_gss_copy_oid(minor_status, mech_type,
 154                                                 &dest_union->mech_type)) {
 155                 map_errcode(minor_status);
 156                 goto allocation_failure;
 157         }
 158
 159         if (major_status =
 160                 __gss_import_internal_name(minor_status, mech_type,
 161                                                 dest_union,
 162                                         &dest_union->mech_name))
 163                 goto allocation_failure;
 164
 165         if (output_name)
 166                 *output_name = (gss_name_t)dest_union;
 167
 168         return (GSS_S_COMPLETE);
 169
 170 /* Solaris Kerberos - note some fails are not "allocation fails".  Sigh. */
 171 allocation_failure:
 172         /* do not delete the src name external name format */
 173         if (output_name) {
 174                 if (out_union->external_name) {
 175                         if (out_union->external_name->value)
 176                                 free(out_union->external_name->value);
 177                         free(out_union->external_name);
 178                 }
 179                 if (out_union->name_type)
 180                         (void) gss_release_oid(&tmp_status,
 181                                             &out_union->name_type);
 182
 183                 dest_union = out_union;
 184         } else
 185                 dest_union = in_union;
 186
 187         /*
 188          * delete the partially created mech specific name
 189          * applies for both src and dest which ever is being used for output
 190          */
 191
 192         if (dest_union->mech_name) {
 193                 (void) __gss_release_internal_name(&tmp_status,
 194                                                 dest_union->mech_type,
 195                                                 &dest_union->mech_name);
 196         }
 197
 198         if (dest_union->mech_type)
 199                 (void) gss_release_oid(&tmp_status, &dest_union->mech_type);
 200
 201
 202         if (output_name)
 203                 free(out_union);
 204
 205         return (major_status);
 206 } /**********  gss_canonicalize_name ********/