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/*
* Copyright (c) 2017-2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file protocol/ah.c
* @brief hICN operations for AH header
*/
#include <string.h> // memcpy
#include <hicn/common.h>
#include <hicn/error.h>
#include <hicn/header.h>
#include <hicn/ops.h>
#include <hicn/protocol/ah.h>
DECLARE_get_interest_locator (ah, UNEXPECTED);
DECLARE_set_interest_locator (ah, UNEXPECTED);
DECLARE_get_interest_name (ah, UNEXPECTED);
DECLARE_set_interest_name (ah, UNEXPECTED);
DECLARE_get_interest_name_suffix (ah, UNEXPECTED);
DECLARE_set_interest_name_suffix (ah, UNEXPECTED);
DECLARE_get_data_locator (ah, UNEXPECTED);
DECLARE_set_data_locator (ah, UNEXPECTED);
DECLARE_get_data_name (ah, UNEXPECTED);
DECLARE_set_data_name (ah, UNEXPECTED);
DECLARE_get_data_name_suffix (ah, UNEXPECTED);
DECLARE_set_data_name_suffix (ah, UNEXPECTED);
DECLARE_get_data_pathlabel (ah, UNEXPECTED);
DECLARE_set_data_pathlabel (ah, UNEXPECTED);
DECLARE_update_data_pathlabel (ah, UNEXPECTED);
DECLARE_get_lifetime (ah, UNEXPECTED);
DECLARE_set_lifetime (ah, UNEXPECTED);
DECLARE_get_payload_length (ah, UNEXPECTED);
DECLARE_set_payload_length (ah, UNEXPECTED);
int
ah_init_packet_header (hicn_type_t type, hicn_protocol_t * h)
{
/* *INDENT-OFF* */
h->ah = (_ah_header_t)
{
.nh = (u8)0,
.payloadlen = (u8)0,
.reserved = (u16)0,
};
/* *INDENT-ON* */
return CHILD_OPS (init_packet_header, type, h);
}
int
ah_reset_interest_for_hash (hicn_type_t type, hicn_protocol_t * h)
{
size_t signature_size;
int rc =
hicn_ops_vft[type.l1]->get_signature_size (type, h, &signature_size);
if (rc < 0)
return rc;
memset (&(h->ah.validationPayload), 0, signature_size);
return CHILD_OPS (reset_interest_for_hash, type, h);
}
int
ah_reset_data_for_hash (hicn_type_t type, hicn_protocol_t * h)
{
size_t signature_size;
int rc =
hicn_ops_vft[type.l1]->get_signature_size (type, h, &signature_size);
if (rc < 0)
return rc;
memset (&(h->ah.validationPayload), 0, signature_size);
return CHILD_OPS (reset_interest_for_hash, type, h);
}
int
ah_update_checksums (hicn_type_t type, hicn_protocol_t * h, u16 partial_csum,
size_t payload_length)
{
/* Nothing to do as there is no checksum in AH */
return HICN_LIB_ERROR_NONE;
}
int
ah_verify_checksums (hicn_type_t type, hicn_protocol_t * h, u16 partial_csum,
size_t payload_length)
{
/* Nothing to do as there is no checksum in AH */
return HICN_LIB_ERROR_NONE;
}
int
ah_rewrite_interest (hicn_type_t type, hicn_protocol_t * h,
const ip46_address_t * addr_new,
ip46_address_t * addr_old)
{
/* Nothing to do on signature */
return HICN_LIB_ERROR_NONE;
}
int
ah_rewrite_data (hicn_type_t type, hicn_protocol_t * h,
const ip46_address_t * addr_new, ip46_address_t * addr_old,
const hicn_faceid_t face_id)
{
/* Nothing to do on signature */
return HICN_LIB_ERROR_NONE;
}
int
ah_get_length (hicn_type_t type, const hicn_protocol_t * h, size_t * length)
{
return HICN_LIB_ERROR_NOT_IMPLEMENTED;
}
int
ah_get_current_header_length (hicn_type_t type, const hicn_protocol_t * h,
size_t * header_length)
{
*header_length = AH_HDRLEN + (h->ah.payloadlen << 2);
return HICN_LIB_ERROR_NONE;
}
int
ah_get_header_length (hicn_type_t type, const hicn_protocol_t * h,
size_t * header_length)
{
size_t child_header_length = 0;
int rc = CHILD_OPS (get_header_length, type, h, &child_header_length);
if (rc < 0)
return rc;
*header_length = AH_HDRLEN + (h->ah.payloadlen << 2) + child_header_length;
return HICN_LIB_ERROR_NONE;
}
int
ah_get_signature (hicn_type_t type, hicn_protocol_t * h, uint8_t ** signature)
{
*signature = h->ah.validationPayload;
return HICN_LIB_ERROR_NONE;
}
int
ah_get_signature_size (hicn_type_t type, const hicn_protocol_t * h,
size_t * signature_size)
{
*signature_size = h->ah.payloadlen << 2;
return HICN_LIB_ERROR_NONE;
}
int
ah_set_signature_size (hicn_type_t type, hicn_protocol_t * h,
const size_t signature_size)
{
h->ah.payloadlen = (u8) (signature_size >> 2);
return HICN_LIB_ERROR_NONE;
}
int
ah_set_signature_timestamp (hicn_type_t type, hicn_protocol_t * h,
uint64_t signature_timestamp)
{
uint64_t netwok_order_timestamp = htonll (signature_timestamp);
memcpy (h->ah.timestamp_as_u8, &netwok_order_timestamp, sizeof (uint64_t));
return HICN_LIB_ERROR_NONE;
}
int
ah_get_signature_timestamp (hicn_type_t type, const hicn_protocol_t * h,
uint64_t * signature_timestamp)
{
memcpy (signature_timestamp, h->ah.timestamp_as_u8, sizeof (uint64_t));
*signature_timestamp = ntohll (*signature_timestamp);
return HICN_LIB_ERROR_NONE;
}
int
ah_set_validation_algorithm (hicn_type_t type, hicn_protocol_t * h,
uint8_t validation_algorithm)
{
h->ah.validationAlgorithm = validation_algorithm;
return HICN_LIB_ERROR_NONE;
}
int
ah_get_validation_algorithm (hicn_type_t type, const hicn_protocol_t * h,
uint8_t * validation_algorithm)
{
*validation_algorithm = h->ah.validationAlgorithm;
return HICN_LIB_ERROR_NONE;
}
int
ah_set_key_id (hicn_type_t type, hicn_protocol_t * h, uint8_t * key_id)
{
memcpy (h->ah.keyId, key_id, sizeof (h->ah.keyId));
return HICN_LIB_ERROR_NONE;
}
int
ah_get_key_id (hicn_type_t type, hicn_protocol_t * h,
uint8_t ** key_id, uint8_t * key_id_size)
{
*key_id = h->ah.keyId;
*key_id_size = sizeof (h->ah.keyId);
return HICN_LIB_ERROR_NONE;
}
DECLARE_HICN_OPS (ah);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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