148 lines
4.7 KiB
C
148 lines
4.7 KiB
C
/*-
|
|
* Copyright (c) 2005 Doug Rabson
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD: src/lib/libgssapi/gss_export_sec_context.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
|
|
*/
|
|
|
|
#include "mech_locl.h"
|
|
|
|
GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
|
|
gss_export_sec_context(OM_uint32 *minor_status,
|
|
gss_ctx_id_t *context_handle,
|
|
gss_buffer_t interprocess_token)
|
|
{
|
|
OM_uint32 major_status = GSS_S_FAILURE, tmp_minor;
|
|
krb5_storage *sp;
|
|
krb5_data data;
|
|
krb5_error_code kret;
|
|
struct _gss_context *ctx;
|
|
gssapi_mech_interface m;
|
|
gss_buffer_desc buf = GSS_C_EMPTY_BUFFER;
|
|
unsigned char verflags;
|
|
|
|
*minor_status = 0;
|
|
|
|
if (!interprocess_token)
|
|
return GSS_S_CALL_INACCESSIBLE_READ;
|
|
|
|
_mg_buffer_zero(interprocess_token);
|
|
|
|
if (context_handle == NULL)
|
|
return GSS_S_NO_CONTEXT;
|
|
|
|
ctx = (struct _gss_context *) *context_handle;
|
|
if (ctx == NULL)
|
|
return GSS_S_NO_CONTEXT;
|
|
|
|
sp = krb5_storage_emem();
|
|
if (sp == NULL) {
|
|
*minor_status = ENOMEM;
|
|
goto failure;
|
|
}
|
|
krb5_storage_set_byteorder(sp, KRB5_STORAGE_BYTEORDER_PACKED);
|
|
|
|
verflags = 0x00; /* Version 0 */
|
|
|
|
if (ctx->gc_target_len)
|
|
verflags |= EXPORT_CONTEXT_FLAG_ACCUMULATING;
|
|
|
|
if (ctx->gc_ctx)
|
|
verflags |= EXPORT_CONTEXT_FLAG_MECH_CTX;
|
|
|
|
kret = krb5_store_uint8(sp, verflags);
|
|
if (kret) {
|
|
*minor_status = kret;
|
|
goto failure;
|
|
}
|
|
|
|
if (ctx->gc_target_len) {
|
|
_gss_mg_log(10, "gss-esc: exporting partial token %zu/%zu",
|
|
ctx->gc_input.length, ctx->gc_target_len);
|
|
kret = krb5_store_uint8(sp, ctx->gc_initial);
|
|
if (kret) {
|
|
*minor_status = kret;
|
|
goto failure;
|
|
}
|
|
kret = krb5_store_uint32(sp, ctx->gc_target_len);
|
|
if (kret) {
|
|
*minor_status = kret;
|
|
goto failure;
|
|
}
|
|
major_status = _gss_mg_store_buffer(minor_status, sp,
|
|
&ctx->gc_input);
|
|
if (major_status != GSS_S_COMPLETE)
|
|
goto failure;
|
|
} else if (ctx->gc_ctx == GSS_C_NO_CONTEXT) {
|
|
gss_delete_sec_context(&tmp_minor, context_handle,
|
|
GSS_C_NO_BUFFER);
|
|
return GSS_S_NO_CONTEXT;
|
|
}
|
|
|
|
if (ctx->gc_ctx) {
|
|
m = ctx->gc_mech;
|
|
|
|
major_status = m->gm_export_sec_context(minor_status,
|
|
&ctx->gc_ctx, &buf);
|
|
|
|
if (major_status != GSS_S_COMPLETE) {
|
|
_gss_mg_error(m, *minor_status);
|
|
goto failure;
|
|
}
|
|
|
|
major_status = _gss_mg_store_oid(minor_status, sp,
|
|
&m->gm_mech_oid);
|
|
if (major_status != GSS_S_COMPLETE)
|
|
goto failure;
|
|
|
|
major_status = _gss_mg_store_buffer(minor_status, sp, &buf);
|
|
if (major_status != GSS_S_COMPLETE)
|
|
goto failure;
|
|
}
|
|
|
|
kret = krb5_storage_to_data(sp, &data);
|
|
if (kret) {
|
|
*minor_status = kret;
|
|
goto failure;
|
|
}
|
|
|
|
interprocess_token->length = data.length;
|
|
interprocess_token->value = data.data;
|
|
|
|
major_status = GSS_S_COMPLETE;
|
|
|
|
_gss_mg_log(1, "gss-esc: token length %zu", data.length);
|
|
|
|
failure:
|
|
if (major_status == GSS_S_COMPLETE && *minor_status == 0)
|
|
gss_delete_sec_context(&tmp_minor, context_handle,
|
|
GSS_C_NO_BUFFER);
|
|
else if (*minor_status)
|
|
major_status = GSS_S_FAILURE;
|
|
|
|
_gss_secure_release_buffer(minor_status, &buf);
|
|
krb5_storage_free(sp);
|
|
return major_status;
|
|
}
|