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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* lib/gssapi/krb5/import_sec_context.c - Internalize the security context */
/*
* Copyright 1995,2004,2007,2008 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"
/* for serialization initialization functions */
#include "k5-int.h"
/*
* Fix up the OID of the mechanism so that uses the static version of
* the OID if possible.
*/
gss_OID krb5_gss_convert_static_mech_oid(oid)
gss_OID oid;
{
const gss_OID_desc *p;
OM_uint32 minor_status;
for (p = krb5_gss_oid_array; p->length; p++) {
if ((oid->length == p->length) &&
(memcmp(oid->elements, p->elements, p->length) == 0)) {
generic_gss_release_oid(&minor_status, &oid);
return (gss_OID) p;
}
}
return oid;
}
krb5_error_code
krb5_gss_ser_init (krb5_context context)
{
krb5_error_code code;
static krb5_error_code (KRB5_CALLCONV *const fns[])(krb5_context) = {
krb5_ser_context_init, krb5_ser_auth_context_init,
krb5_ser_ccache_init, krb5_ser_rcache_init, krb5_ser_keytab_init,
};
unsigned int i;
for (i = 0; i < sizeof(fns)/sizeof(fns[0]); i++)
if ((code = (fns[i])(context)) != 0)
return code;
return 0;
}
OM_uint32 KRB5_CALLCONV
krb5_gss_import_sec_context(minor_status, interprocess_token, context_handle)
OM_uint32 *minor_status;
gss_buffer_t interprocess_token;
gss_ctx_id_t *context_handle;
{
krb5_context context;
krb5_error_code kret = 0;
size_t blen;
krb5_gss_ctx_id_t ctx;
krb5_octet *ibp;
/* This is a bit screwy. We create a krb5 context because we need
one when calling the serialization code. However, one of the
objects we're unpacking is a krb5 context, so when we finish,
we can throw this one away. */
kret = krb5_gss_init_context(&context);
if (kret) {
*minor_status = kret;
return GSS_S_FAILURE;
}
kret = krb5_gss_ser_init(context);
if (kret) {
*minor_status = kret;
save_error_info(*minor_status, context);
krb5_free_context(context);
return GSS_S_FAILURE;
}
/* Assume a tragic failure */
ctx = (krb5_gss_ctx_id_t) NULL;
*minor_status = 0;
/* Internalize the context */
ibp = (krb5_octet *) interprocess_token->value;
blen = (size_t) interprocess_token->length;
kret = kg_ctx_internalize(context, (krb5_pointer *) &ctx, &ibp, &blen);
if (kret) {
*minor_status = (OM_uint32) kret;
save_error_info(*minor_status, context);
krb5_free_context(context);
return(GSS_S_FAILURE);
}
krb5_free_context(context);
ctx->mech_used = krb5_gss_convert_static_mech_oid(ctx->mech_used);
*context_handle = (gss_ctx_id_t) ctx;
*minor_status = 0;
return (GSS_S_COMPLETE);
}
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