blob: d486ac58075091b98e940368d812205a589b10b9 [file] [log] [blame] [edit]
// Copyright (c) 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "quiche/quic/qbone/qbone_packet_processor_test_tools.h"
#include <netinet/ip6.h>
#include <string>
namespace quic {
std::string PrependIPv6HeaderForTest(const std::string& body, int hops) {
ip6_hdr header;
memset(&header, 0, sizeof(header));
header.ip6_vfc = 6 << 4;
header.ip6_plen = htons(body.size());
header.ip6_nxt = IPPROTO_UDP;
header.ip6_hops = hops;
header.ip6_src = in6addr_loopback;
header.ip6_dst = in6addr_loopback;
std::string packet(sizeof(header) + body.size(), '\0');
memcpy(&packet[0], &header, sizeof(header));
memcpy(&packet[sizeof(header)], body.data(), body.size());
return packet;
}
bool DecrementIPv6HopLimit(std::string& packet) {
if (packet.size() < sizeof(ip6_hdr)) {
return false;
}
ip6_hdr* header = reinterpret_cast<ip6_hdr*>(&packet[0]);
if (header->ip6_vfc >> 4 != 6 || header->ip6_hops == 0) {
return false;
}
header->ip6_hops--;
return true;
}
} // namespace quic