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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* lib/gssapi/krb5/export_sec_context.c - Externalize a security context */
/*
* Copyright 1995, 2008 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
#include "gssapiP_krb5.h"
#ifndef LEAN_CLIENT
OM_uint32 KRB5_CALLCONV
krb5_gss_export_sec_context(minor_status, context_handle, interprocess_token)
OM_uint32 *minor_status;
gss_ctx_id_t *context_handle;
gss_buffer_t interprocess_token;
{
krb5_context context = NULL;
krb5_error_code kret;
OM_uint32 retval;
size_t bufsize, blen;
krb5_gss_ctx_id_t ctx;
krb5_octet *obuffer, *obp;
/* Assume a tragic failure */
obuffer = (krb5_octet *) NULL;
retval = GSS_S_FAILURE;
*minor_status = 0;
ctx = (krb5_gss_ctx_id_t) *context_handle;
context = ctx->k5_context;
kret = krb5_gss_ser_init(context);
if (kret)
goto error_out;
/* Determine size needed for externalization of context */
bufsize = 0;
if ((kret = kg_ctx_size(context, (krb5_pointer) ctx,
&bufsize)))
goto error_out;
/* Allocate the buffer */
if ((obuffer = gssalloc_malloc(bufsize)) == NULL) {
kret = ENOMEM;
goto error_out;
}
obp = obuffer;
blen = bufsize;
/* Externalize the context */
if ((kret = kg_ctx_externalize(context,
(krb5_pointer) ctx, &obp, &blen)))
goto error_out;
/* Success! Return the buffer */
interprocess_token->length = bufsize - blen;
interprocess_token->value = obuffer;
*minor_status = 0;
retval = GSS_S_COMPLETE;
/* Now, clean up the context state */
(void)krb5_gss_delete_sec_context(minor_status, context_handle, NULL);
*context_handle = GSS_C_NO_CONTEXT;
return (GSS_S_COMPLETE);
error_out:
if (retval != GSS_S_COMPLETE)
if (kret != 0 && context != 0)
save_error_info((OM_uint32)kret, context);
if (obuffer && bufsize) {
memset(obuffer, 0, bufsize);
xfree(obuffer);
}
if (*minor_status == 0)
*minor_status = (OM_uint32) kret;
return(retval);
}
#endif /* LEAN_CLIENT */
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