/* #pragma ident "@(#)g_seal.c 1.19 98/04/21 SMI" */
/*
* Copyright 1996 by Sun Microsystems, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appears in all copies and
* that both that copyright notice and this permission notice appear in
* supporting documentation, and that the name of Sun Microsystems not be used
* in advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. Sun Microsystems makes no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL SUN MICROSYSTEMS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/*
* glue routine for gss_wrap_aead
*/
#include "mglueP.h"
static OM_uint32
val_wrap_aead_args(
OM_uint32 *minor_status,
gss_ctx_id_t context_handle,
int conf_req_flag,
gss_qop_t qop_req,
gss_buffer_t input_assoc_buffer,
gss_buffer_t input_payload_buffer,
int *conf_state,
gss_buffer_t output_message_buffer)
{
/* Initialize outputs. */
if (minor_status != NULL)
*minor_status = 0;
/* Validate arguments. */
if (minor_status == NULL)
return (GSS_S_CALL_INACCESSIBLE_WRITE);
if (context_handle == GSS_C_NO_CONTEXT)
return (GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CONTEXT);
if (input_payload_buffer == GSS_C_NO_BUFFER)
return (GSS_S_CALL_INACCESSIBLE_READ);
if (output_message_buffer == GSS_C_NO_BUFFER)
return (GSS_S_CALL_INACCESSIBLE_WRITE);
return (GSS_S_COMPLETE);
}
static OM_uint32
gssint_wrap_aead_iov_shim(gss_mechanism mech,
OM_uint32 *minor_status,
gss_ctx_id_t context_handle,
int conf_req_flag,
gss_qop_t qop_req,
gss_buffer_t input_assoc_buffer,
gss_buffer_t input_payload_buffer,
int *conf_state,
gss_buffer_t output_message_buffer)
{
gss_iov_buffer_desc iov[5];
OM_uint32 status;
size_t offset;
int i = 0, iov_count;
/* HEADER | SIGN_ONLY_DATA | DATA | PADDING | TRAILER */
iov[i].type = GSS_IOV_BUFFER_TYPE_HEADER;
iov[i].buffer.value = NULL;
iov[i].buffer.length = 0;
i++;
if (input_assoc_buffer != GSS_C_NO_BUFFER) {
iov[i].type = GSS_IOV_BUFFER_TYPE_SIGN_ONLY;
iov[i].buffer = *input_assoc_buffer;
i++;
}
iov[i].type = GSS_IOV_BUFFER_TYPE_DATA;
iov[i].buffer = *input_payload_buffer;
i++;
iov[i].type = GSS_IOV_BUFFER_TYPE_PADDING;
iov[i].buffer.value = NULL;
iov[i].buffer.length = 0;
i++;
iov[i].type = GSS_IOV_BUFFER_TYPE_TRAILER;
iov[i].buffer.value = NULL;
iov[i].buffer.length = 0;
i++;
iov_count = i;
assert(mech->gss_wrap_iov_length);
status = mech->gss_wrap_iov_length(minor_status, context_handle,
conf_req_flag, qop_req,
NULL, iov, iov_count);
if (status != GSS_S_COMPLETE) {
map_error(minor_status, mech);
return status;
}
/* Format output token (does not include associated data) */
for (i = 0, output_message_buffer->length = 0; i < iov_count; i++) {
if (GSS_IOV_BUFFER_TYPE(iov[i].type) == GSS_IOV_BUFFER_TYPE_SIGN_ONLY)
continue;
output_message_buffer->length += iov[i].buffer.length;
}
output_message_buffer->value = gssalloc_malloc(output_message_buffer->length);
if (output_message_buffer->value == NULL) {
*minor_status = ENOMEM;
return GSS_S_FAILURE;
}
i = 0, offset = 0;
/* HEADER */
iov[i].buffer.value = (unsigned char *)output_message_buffer->value + offset;
offset += iov[i].buffer.length;
i++;
/* SIGN_ONLY_DATA */
if (input_assoc_buffer != GSS_C_NO_BUFFER)
i++;
/* DATA */
iov[i].buffer.value = (unsigned char *)output_message_buffer->value + offset;
offset += iov[i].buffer.length;
memcpy(iov[i].buffer.value, input_payload_buffer->value, iov[i].buffer.length);
i++;
/* PADDING */
iov[i].buffer.value = (unsigned char *)output_message_buffer->value + offset;
offset += iov[i].buffer.length;
i++;
/* TRAILER */
iov[i].buffer.value = (unsigned char *)output_message_buffer->value + offset;
offset += iov[i].buffer.length;
i++;
assert(offset == output_message_buffer->length);
assert(mech->gss_wrap_iov);
status = mech->gss_wrap_iov(minor_status, context_handle,
conf_req_flag, qop_req,
conf_state, iov, iov_count);
if (status != GSS_S_COMPLETE) {
OM_uint32 minor;
map_error(minor_status, mech);
gss_release_buffer(&minor, output_message_buffer);
}
return status;
}
OM_uint32
gssint_wrap_aead (gss_mechanism mech,
OM_uint32 *minor_status,
gss_union_ctx_id_t ctx,
int conf_req_flag,
gss_qop_t qop_req,
gss_buffer_t input_assoc_buffer,
gss_buffer_t input_payload_buffer,
int *conf_state,
gss_buffer_t output_message_buffer)
{
/* EXPORT DELETE START */
OM_uint32 status;
assert(ctx != NULL);
assert(mech != NULL);
if (mech->gss_wrap_aead) {
status = mech->gss_wrap_aead(minor_status,
ctx->internal_ctx_id,
conf_req_flag,
qop_req,
input_assoc_buffer,
input_payload_buffer,
conf_state,
output_message_buffer);
if (status != GSS_S_COMPLETE)
map_error(minor_status, mech);
} else if (mech->gss_wrap_iov && mech->gss_wrap_iov_length) {
status = gssint_wrap_aead_iov_shim(mech,
minor_status,
ctx->internal_ctx_id,
conf_req_flag,
qop_req,
input_assoc_buffer,
input_payload_buffer,
conf_state,
output_message_buffer);
} else
status = GSS_S_UNAVAILABLE;
/* EXPORT DELETE END */
return status;
}
OM_uint32 KRB5_CALLCONV
gss_wrap_aead (minor_status,
context_handle,
conf_req_flag,
qop_req,
input_assoc_buffer,
input_payload_buffer,
conf_state,
output_message_buffer)
OM_uint32 * minor_status;
gss_ctx_id_t context_handle;
int conf_req_flag;
gss_qop_t qop_req;
gss_buffer_t input_assoc_buffer;
gss_buffer_t input_payload_buffer;
int * conf_state;
gss_buffer_t output_message_buffer;
{
OM_uint32 status;
gss_mechanism mech;
gss_union_ctx_id_t ctx;
status = val_wrap_aead_args(minor_status, context_handle,
conf_req_flag, qop_req,
input_assoc_buffer, input_payload_buffer,
conf_state, output_message_buffer);
if (status != GSS_S_COMPLETE)
return (status);
/*
* select the approprate underlying mechanism routine and
* call it.
*/
ctx = (gss_union_ctx_id_t)context_handle;
if (ctx->internal_ctx_id == GSS_C_NO_CONTEXT)
return (GSS_S_NO_CONTEXT);
mech = gssint_get_mechanism (ctx->mech_type);
if (!mech)
return (GSS_S_BAD_MECH);
return gssint_wrap_aead(mech, minor_status, ctx,
conf_req_flag, qop_req,
input_assoc_buffer, input_payload_buffer,
conf_state, output_message_buffer);
}