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      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 2007 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     27 
     28 /*
     29  * routine gss_canonicalize_name
     30  *
     31  * This routine is used to produce a mechanism specific
     32  * representation of name that has been previously
     33  * imported with gss_import_name.  The routine uses the mechanism
     34  * specific implementation of gss_import_name to implement this
     35  * function.
     36  *
     37  * We allow a NULL output_name, in which case we modify the
     38  * input_name to include the mechanism specific name.
     39  */
     40 
     41 #include <mechglueP.h>
     42 #ifdef HAVE_STDLIB_H
     43 #include <stdlib.h>
     44 #endif
     45 #include <string.h>
     46 #include <errno.h>
     47 
     48 OM_uint32
     49 gss_canonicalize_name(minor_status,
     50 				input_name,
     51 				mech_type,
     52 				output_name)
     53 OM_uint32 *minor_status;
     54 const gss_name_t input_name;
     55 const gss_OID mech_type;
     56 gss_name_t *output_name;
     57 {
     58 	gss_union_name_t in_union, out_union = NULL, dest_union = NULL;
     59 	OM_uint32 major_status = GSS_S_FAILURE;
     60 
     61 	if (minor_status == NULL)
     62 		return (GSS_S_CALL_INACCESSIBLE_WRITE);
     63 
     64 	*minor_status = 0;
     65 
     66 	if (output_name)
     67 		*output_name = 0;
     68 
     69 	/* check the input parameters */
     70 	if (input_name == NULL || mech_type == GSS_C_NULL_OID)
     71 		return (GSS_S_CALL_INACCESSIBLE_READ);
     72 
     73 	in_union = (gss_union_name_t)input_name;
     74 	/*
     75 	 * If the caller wants to reuse the name, and the name has already
     76 	 * been converted, then there is nothing for us to do.
     77 	 */
     78 	if (!output_name && in_union->mech_type &&
     79 		g_OID_equal(in_union->mech_type, mech_type))
     80 		return (GSS_S_COMPLETE);
     81 
     82 	/* ok, then we need to do something - start by creating data struct */
     83 	if (output_name) {
     84 		out_union =
     85 			(gss_union_name_t)malloc(sizeof (gss_union_name_desc));
     86 		if (!out_union)
     87 			goto allocation_failure;
     88 
     89 		out_union->mech_type = 0;
     90 		out_union->mech_name = 0;
     91 		out_union->name_type = 0;
     92 		out_union->external_name = 0;
     93 
     94 		/* Allocate the buffer for the user specified representation */
     95 		if (gssint_create_copy_buffer(in_union->external_name,
     96 				&out_union->external_name, 1))
     97 			goto allocation_failure;
     98 
     99 		if (in_union->name_type != GSS_C_NULL_OID) {
    100 			if ((major_status = generic_gss_copy_oid(minor_status,
    101 				in_union->name_type, &out_union->name_type)))
    102 			goto allocation_failure;
    103 		}
    104 
    105 	}
    106 
    107 	/*
    108 	 * might need to delete any old mechanism names if we are
    109 	 * reusing the buffer.
    110 	 */
    111 	if (!output_name) {
    112 		if (in_union->mech_type) {
    113 			(void) __gss_release_internal_name(minor_status,
    114 							in_union->mech_type,
    115 							&in_union->mech_name);
    116 			(void) gss_release_oid(minor_status,
    117 					    &in_union->mech_type);
    118 			in_union->mech_type = 0;
    119 		}
    120 		dest_union = in_union;
    121 	} else
    122 		dest_union = out_union;
    123 
    124 	/* now let's create the new mech name */
    125 	if (major_status = generic_gss_copy_oid(minor_status, mech_type,
    126 						&dest_union->mech_type))
    127 		goto allocation_failure;
    128 
    129 	if (major_status =
    130 		__gss_import_internal_name(minor_status, mech_type,
    131 						dest_union,
    132 						&dest_union->mech_name))
    133 		goto allocation_failure;
    134 
    135 	if (output_name)
    136 		*output_name = (gss_name_t)dest_union;
    137 
    138 	return (GSS_S_COMPLETE);
    139 
    140 allocation_failure:
    141 	/* do not delete the src name external name format */
    142 	if (output_name) {
    143 		if (out_union->external_name) {
    144 			if (out_union->external_name->value)
    145 				free(out_union->external_name->value);
    146 			free(out_union->external_name);
    147 		}
    148 		if (out_union->name_type)
    149 			(void) gss_release_oid(minor_status,
    150 					    &out_union->name_type);
    151 
    152 		dest_union = out_union;
    153 	} else
    154 		dest_union = in_union;
    155 
    156 	/*
    157 	 * delete the partially created mech specific name
    158 	 * applies for both src and dest which ever is being used for output
    159 	 */
    160 
    161 	if (dest_union->mech_name) {
    162 		(void) __gss_release_internal_name(minor_status,
    163 						dest_union->mech_type,
    164 						&dest_union->mech_name);
    165 	}
    166 
    167 	if (dest_union->mech_type)
    168 		(void) gss_release_oid(minor_status, &dest_union->mech_type);
    169 
    170 
    171 	if (output_name)
    172 		free(out_union);
    173 
    174 	return (major_status);
    175 } /**********  gss_canonicalize_name ********/
    176