/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* #pragma ident "@(#)g_canon_name.c 1.15 04/02/23 SMI" */
/*
* routine gss_canonicalize_name
*
* This routine is used to produce a mechanism specific
* representation of name that has been previously
* imported with gss_import_name. The routine uses the mechanism
* specific implementation of gss_import_name to implement this
* function.
*
* We allow a NULL output_name, in which case we modify the
* input_name to include the mechanism specific name.
*/
#include <mglueP.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <string.h>
#include <errno.h>
static OM_uint32
val_canon_name_args(
OM_uint32 *minor_status,
const gss_name_t input_name,
const gss_OID mech_type,
gss_name_t *output_name)
{
/* Initialize outputs. */
if (minor_status != NULL)
*minor_status = 0;
if (output_name != NULL)
*output_name = GSS_C_NO_NAME;
/* Validate arguments. */
if (minor_status == NULL)
return (GSS_S_CALL_INACCESSIBLE_WRITE);
if (input_name == GSS_C_NO_NAME || mech_type == GSS_C_NULL_OID)
return (GSS_S_CALL_INACCESSIBLE_READ);
return (GSS_S_COMPLETE);
}
OM_uint32 KRB5_CALLCONV
gss_canonicalize_name(minor_status,
input_name,
mech_type,
output_name)
OM_uint32 *minor_status;
const gss_name_t input_name;
const gss_OID mech_type;
gss_name_t *output_name;
{
gss_union_name_t in_union, out_union = NULL, dest_union = NULL;
OM_uint32 major_status = GSS_S_FAILURE, tmpmin;
gss_OID selected_mech;
major_status = val_canon_name_args(minor_status,
input_name,
mech_type,
output_name);
if (major_status != GSS_S_COMPLETE)
return (major_status);
major_status = gssint_select_mech_type(minor_status, mech_type,
&selected_mech);
if (major_status != GSS_S_COMPLETE)
return (major_status);
/* Initial value needed below. */
major_status = GSS_S_FAILURE;
in_union = (gss_union_name_t)input_name;
/*
* If the caller wants to reuse the name, and the name has already
* been converted, then there is nothing for us to do.
*/
if (!output_name && in_union->mech_type &&
g_OID_equal(in_union->mech_type, selected_mech))
return (GSS_S_COMPLETE);
/* ok, then we need to do something - start by creating data struct */
if (output_name) {
out_union =
(gss_union_name_t)malloc(sizeof (gss_union_name_desc));
if (!out_union)
goto allocation_failure;
out_union->mech_type = 0;
out_union->mech_name = 0;
out_union->name_type = 0;
out_union->external_name = 0;
out_union->loopback = out_union;
/* Allocate the buffer for the user specified representation */
if (gssint_create_copy_buffer(in_union->external_name,
&out_union->external_name, 1))
goto allocation_failure;
if (in_union->name_type != GSS_C_NULL_OID) {
major_status = generic_gss_copy_oid(minor_status,
in_union->name_type,
&out_union->name_type);
if (major_status) {
map_errcode(minor_status);
goto allocation_failure;
}
}
}
/*
* might need to delete any old mechanism names if we are
* reusing the buffer.
*/
if (!output_name) {
if (in_union->mech_type) {
(void) gssint_release_internal_name(minor_status,
in_union->mech_type,
&in_union->mech_name);
(void) gss_release_oid(minor_status,
&in_union->mech_type);
in_union->mech_type = 0;
}
dest_union = in_union;
} else
dest_union = out_union;
/* now let's create the new mech name */
if ((major_status = generic_gss_copy_oid(minor_status, selected_mech,
&dest_union->mech_type))) {
map_errcode(minor_status);
goto allocation_failure;
}
if ((major_status =
gssint_import_internal_name(minor_status, selected_mech,
in_union,
&dest_union->mech_name)))
goto allocation_failure;
if (output_name)
*output_name = (gss_name_t)dest_union;
return (GSS_S_COMPLETE);
allocation_failure:
if (out_union) {
/* Release the partly constructed out_union. */
gss_name_t name = (gss_name_t)out_union;
(void) gss_release_name(&tmpmin, &name);
} else if (!output_name) {
/* Release only the mech name fields in in_union. */
if (in_union->mech_name) {
(void) gssint_release_internal_name(&tmpmin,
dest_union->mech_type,
&dest_union->mech_name);
}
if (in_union->mech_type)
(void) gss_release_oid(&tmpmin, &dest_union->mech_type);
}
return (major_status);
} /********** gss_canonicalize_name ********/