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/*
* Copyright (c) 2020 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/prefix.h>
#include <hicn/transport/utils/hash.h>
#include <sstream>
#include <string>
#pragma once
TRANSPORT_ALWAYS_INLINE std::string generatePrefix(
const std::string& prefix_url, const std::string& first_ipv6_word) {
const char* str = prefix_url.c_str();
uint16_t pos = 0;
if (strncmp("http://", str, 7) == 0) {
pos = 7;
} else if (strncmp("https://", str, 8) == 0) {
pos = 8;
}
str += pos;
uint32_t locator_hash = utils::hash::fnv32_buf(str, strlen(str));
std::stringstream stream;
stream << first_ipv6_word << ":0";
for (uint16_t* word = (uint16_t*)&locator_hash;
std::size_t(word) < (std::size_t(&locator_hash) + sizeof(locator_hash));
word++) {
stream << ":" << std::hex << *word;
}
stream << "::";
return stream.str();
}
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