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/*
* Copyright (c) 2021-2022 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 <core/manifest_format.h>
#include <hicn/name.h>
#include <hicn/transport/core/name.h>
#include <hicn/transport/errors/errors.h>
#include <hicn/transport/errors/tokenizer_exception.h>
#include <hicn/transport/utils/hash.h>
#include <hicn/transport/utils/string_tokenizer.h>
namespace transport {
namespace core {
Name::Name() { std::memset(&name_, 0, sizeof(name_)); }
/**
* XXX This function does not use the name API provided by libhicn
*/
Name::Name(int family, const uint8_t *ip_address, std::uint32_t suffix)
: name_({}) {
std::size_t length;
uint8_t *dst = NULL;
if (family == AF_INET) {
dst = name_.prefix.v4.as_u8;
length = IPV4_ADDR_LEN;
} else if (family == AF_INET6) {
dst = name_.prefix.v6.as_u8;
length = IPV6_ADDR_LEN;
} else {
throw errors::RuntimeException("Specified name family does not exist.");
}
std::memcpy(dst, ip_address, length);
name_.suffix = suffix;
}
Name::Name(const char *name, uint32_t segment) {
if (hicn_name_create(name, segment, &name_) < 0) {
throw errors::InvalidIpAddressException();
}
}
Name::Name(const std::string &uri, uint32_t segment)
: Name(uri.c_str(), segment) {}
Name::Name(const std::string &uri) {
utils::StringTokenizer tokenizer(uri, "|");
std::string ip_address;
std::string seq_number;
ip_address = tokenizer.nextToken();
try {
seq_number = tokenizer.nextToken();
} catch (errors::TokenizerException &) {
seq_number = "0";
}
if (hicn_name_create(ip_address.c_str(), (uint32_t)atoi(seq_number.c_str()),
&name_) < 0) {
throw errors::InvalidIpAddressException();
}
}
Name::Name(const Name &name) { this->name_ = name.name_; }
Name::~Name() {}
Name &Name::operator=(const Name &name) {
if (this != &name) {
if (hicn_name_copy(&this->name_, &name.name_) < 0) {
throw errors::MalformedNameException();
}
}
return *this;
}
bool Name::operator==(const Name &name) const {
return this->equals(name, true);
}
bool Name::operator!=(const Name &name) const {
return !this->operator==(name);
}
Name::operator bool() const {
auto ret = isValid();
return ret;
}
bool Name::isValid() const {
return bool(!hicn_name_empty((hicn_name_t *)&name_));
}
bool Name::equals(const Name &name, bool consider_segment) const {
return !hicn_name_compare(&name_, &name.name_, consider_segment);
}
std::string Name::toString() const {
char *name = new char[100];
int ret = hicn_name_ntop(&name_, name, standard_name_string_length);
if (ret < 0) {
throw errors::MalformedNameException();
}
std::string name_string(name);
delete[] name;
return name_string;
}
uint32_t Name::getHash32(bool consider_suffix) const {
uint32_t hash = _hicn_name_get_hash(&name_, consider_suffix);
if (hash < 0) {
throw errors::RuntimeException("Error computing the hash of the name!");
}
return hash;
}
void Name::clear() { std::memset(&name_, 0, sizeof(name_)); };
Name::Type Name::getType() const {
int family;
hicn_name_get_family(&name_, &family);
return family == AF_INET ? Name::Type::V4 : Name::Type::V6;
}
uint32_t Name::getSuffix() const {
uint32_t ret = 0;
if (hicn_name_get_seq_number((hicn_name_t *)&name_, &ret) < 0) {
throw errors::RuntimeException(
"Impossible to retrieve the sequence number from the name.");
}
return ret;
}
Name &Name::setSuffix(hicn_name_suffix_t suffix) {
if (hicn_name_set_suffix(&name_, suffix) < 0) {
throw errors::RuntimeException("Impossible to set name suffix.");
}
return *this;
}
hicn_ip_prefix_t Name::toIpAddress() const {
hicn_ip_prefix_t ret;
std::memset(&ret, 0, sizeof(ret));
if (hicn_name_to_hicn_ip_prefix(&name_, &ret) < 0) {
throw errors::InvalidIpAddressException();
}
return ret;
}
std::string Name::getPrefix() const {
char prefix[MAXSZ_HICN_NAME];
hicn_name_no_suffix_snprintf(prefix, MAXSZ_HICN_NAME, &name_);
return std::string(prefix);
}
int Name::getAddressFamily() const {
int ret = 0;
if (hicn_name_get_family(&name_, &ret) < 0) {
throw errors::InvalidIpAddressException();
}
return ret;
}
void Name::copyPrefixToDestination(uint8_t *destination) const {
if (hicn_name_copy_prefix_to_destination(destination, &name_) < 0) {
throw errors::RuntimeException(
"Impossibe to copy the name into the "
"provided destination");
}
}
std::ostream &operator<<(std::ostream &os, const Name &name) {
const std::string &str = name.toString();
// os << "core:/";
os << str;
return os;
}
size_t hash<transport::core::Name>::operator()(
const transport::core::Name &name) const {
return name.getHash32(false);
}
size_t compare2<transport::core::Name>::operator()(
const transport::core::Name &name1,
const transport::core::Name &name2) const {
return name1.equals(name2, false);
}
} // end namespace core
} // end namespace transport
namespace std {
size_t hash<transport::core::Name>::operator()(
const transport::core::Name &name) const {
return name.getHash32();
}
} // end namespace std
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