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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.
*/
#include <hicn/transport/core/interest.h>
#include <hicn/transport/errors/errors.h>
#include <hicn/transport/utils/hash.h>
extern "C" {
#ifndef _WIN32
TRANSPORT_CLANG_DISABLE_WARNING("-Wextern-c-compat")
#endif
#include <hicn/hicn.h>
}
#include <cstring>
#include <memory>
namespace transport {
namespace core {
Interest::Interest(const Name &interest_name, Packet::Format format,
std::size_t additional_header_size)
: Packet(format, additional_header_size) {
if (hicn_interest_set_name(format_, packet_start_,
interest_name.getConstStructReference()) < 0) {
throw errors::MalformedPacketException();
}
if (hicn_interest_get_name(format_, packet_start_,
name_.getStructReference()) < 0) {
throw errors::MalformedPacketException();
}
}
#ifdef __ANDROID__
Interest::Interest(hicn_format_t format, std::size_t additional_header_size)
: Interest(Name("0::0|0"), format, additional_header_size) {}
#else
Interest::Interest(hicn_format_t format, std::size_t additional_header_size)
: Interest(base_name, format, additional_header_size) {}
#endif
Interest::Interest(MemBuf &&buffer) : Packet(std::move(buffer)) {
if (hicn_interest_get_name(format_, packet_start_,
name_.getStructReference()) < 0) {
throw errors::MalformedPacketException();
}
}
Interest::Interest(Interest &&other_interest)
: Packet(std::move(other_interest)) {
name_ = std::move(other_interest.name_);
}
Interest::Interest(const Interest &other_interest) : Packet(other_interest) {
name_ = other_interest.name_;
}
Interest &Interest::operator=(const Interest &other) {
return (Interest &)Packet::operator=(other);
}
Interest::~Interest() {}
const Name &Interest::getName() const {
if (!name_) {
if (hicn_interest_get_name(format_, packet_start_,
(hicn_name_t *)name_.getConstStructReference()) <
0) {
throw errors::MalformedPacketException();
}
}
return name_;
}
Name &Interest::getWritableName() { return const_cast<Name &>(getName()); }
void Interest::setName(const Name &name) {
if (hicn_interest_set_name(format_, packet_start_,
name.getConstStructReference()) < 0) {
throw errors::RuntimeException("Error setting interest name.");
}
if (hicn_interest_get_name(format_, packet_start_,
name_.getStructReference()) < 0) {
throw errors::MalformedPacketException();
}
}
void Interest::setLocator(const ip_address_t &ip_address) {
if (hicn_interest_set_locator(format_, packet_start_, &ip_address) < 0) {
throw errors::RuntimeException("Error setting interest locator.");
}
return;
}
ip_address_t Interest::getLocator() const {
ip_address_t ip;
if (hicn_interest_get_locator(format_, packet_start_, &ip) < 0) {
throw errors::RuntimeException("Error getting interest locator.");
}
return ip;
}
void Interest::setLifetime(uint32_t lifetime) {
if (hicn_interest_set_lifetime(packet_start_, lifetime) < 0) {
throw errors::MalformedPacketException();
}
}
uint32_t Interest::getLifetime() const {
uint32_t lifetime = 0;
if (hicn_interest_get_lifetime(packet_start_, &lifetime) < 0) {
throw errors::MalformedPacketException();
}
return lifetime;
}
void Interest::resetForHash() {
if (hicn_interest_reset_for_hash(
format_, reinterpret_cast<hicn_header_t *>(packet_start_)) < 0) {
throw errors::RuntimeException(
"Error resetting interest fields for hash computation.");
}
}
bool Interest::hasManifest() {
return (getPayloadType() == PayloadType::MANIFEST);
}
void Interest::appendSuffix(std::uint32_t suffix) {
if (TRANSPORT_EXPECT_FALSE(suffix_set_.empty())) {
setPayloadType(PayloadType::MANIFEST);
}
suffix_set_.emplace(suffix);
}
void Interest::encodeSuffixes() {
if (!hasManifest()) {
return;
}
// We assume interest does not hold signature for the moment.
auto int_manifest_header =
(InterestManifestHeader *)(writableData() + headerSize());
int_manifest_header->n_suffixes = suffix_set_.size();
std::size_t additional_length =
sizeof(InterestManifestHeader) +
int_manifest_header->n_suffixes * sizeof(uint32_t);
uint32_t *suffix = (uint32_t *)(int_manifest_header + 1);
for (auto it = suffix_set_.begin(); it != suffix_set_.end(); it++, suffix++) {
*suffix = *it;
}
append(additional_length);
updateLength(additional_length);
}
uint32_t *Interest::firstSuffix() {
if (!hasManifest()) {
return nullptr;
}
auto ret = (InterestManifestHeader *)(writableData() + headerSize());
ret += 1;
return (uint32_t *)ret;
}
uint32_t Interest::numberOfSuffixes() {
if (!hasManifest()) {
return 0;
}
auto header = (InterestManifestHeader *)(writableData() + headerSize());
return header->n_suffixes;
}
} // end namespace core
} // end namespace transport
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