282 lines
7.6 KiB
C++
282 lines
7.6 KiB
C++
#include "StarHostAddress.hpp"
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#include "StarLexicalCast.hpp"
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#include "StarNetImpl.hpp"
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namespace Star {
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HostAddress HostAddress::localhost(NetworkMode mode) {
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if (mode == NetworkMode::IPv4) {
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uint8_t addr[4] = {127, 0, 0, 1};
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return HostAddress(mode, addr);
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} else if (mode == NetworkMode::IPv6) {
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uint8_t addr[16] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
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return HostAddress(mode, addr);
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}
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return HostAddress();
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}
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Either<String, HostAddress> HostAddress::lookup(String const& address) {
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try {
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HostAddress ha;
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ha.set(address);
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return makeRight(move(ha));
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} catch (NetworkException const& e) {
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return makeLeft(String(e.what()));
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}
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}
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HostAddress::HostAddress(NetworkMode mode, uint8_t* address) {
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set(mode, address);
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}
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HostAddress::HostAddress(String const& address) {
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auto a = lookup(address);
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if (a.isLeft())
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throw NetworkException(a.left().takeUtf8());
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else
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*this = move(a.right());
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}
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NetworkMode HostAddress::mode() const {
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return m_mode;
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}
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uint8_t const* HostAddress::bytes() const {
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return m_address;
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}
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uint8_t HostAddress::octet(size_t i) const {
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return m_address[i];
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}
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bool HostAddress::isLocalHost() const {
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if (m_mode == NetworkMode::IPv4) {
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return (m_address[0] == 127 && m_address[1] == 0 && m_address[2] == 0 && m_address[3] == 1);
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} else {
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for (size_t i = 0; i < 15; ++i) {
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if (m_address[i] != 0)
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return false;
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}
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return m_address[15] == 1;
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}
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}
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bool HostAddress::isZero() const {
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if (mode() == NetworkMode::IPv4)
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return m_address[0] == 0 && m_address[1] == 0 && m_address[2] == 0 && m_address[3] == 0;
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if (mode() == NetworkMode::IPv6) {
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for (size_t i = 0; i < 16; i++) {
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if (m_address[i] != 0)
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return false;
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}
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return true;
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}
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return false;
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}
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size_t HostAddress::size() const {
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switch (m_mode) {
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case NetworkMode::IPv4:
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return 4;
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case NetworkMode::IPv6:
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return 16;
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default:
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return 0;
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}
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}
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bool HostAddress::operator==(HostAddress const& a) const {
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if (m_mode != a.m_mode)
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return false;
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size_t len = a.size();
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for (size_t i = 0; i < len; i++) {
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if (m_address[i] != a.m_address[i])
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return false;
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}
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return true;
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}
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void HostAddress::set(String const& address) {
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if (address.empty())
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return;
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if (address.compare("*") == 0 || address.compare("0.0.0.0") == 0) {
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uint8_t inaddr_any[4];
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memset(inaddr_any, 0, sizeof(inaddr_any));
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set(NetworkMode::IPv4, inaddr_any);
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} else if (address.compare("::") == 0) {
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// NOTE: This will likely bind to both IPv6 and IPv4, but it does depending
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// on the OS settings
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uint8_t inaddr_any[16];
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memset(inaddr_any, 0, sizeof(inaddr_any));
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set(NetworkMode::IPv6, inaddr_any);
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} else {
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struct addrinfo* result = NULL;
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struct addrinfo* ptr = NULL;
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struct addrinfo hints;
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = AF_UNSPEC;
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// Eliminate duplicates being returned one for each socket type.
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// As we're not using the return socket type or protocol this doesn't effect
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// us.
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_protocol = IPPROTO_TCP;
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// Request only usable addresses e.g. IPv6 only if IPv6 is available
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hints.ai_flags = AI_ADDRCONFIG;
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if (::getaddrinfo(address.utf8Ptr(), NULL, &hints, &result) != 0)
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throw NetworkException(strf("Failed to determine address for '%s' (%s)", address, netErrorString()));
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for (ptr = result; ptr != NULL; ptr = ptr->ai_next) {
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NetworkMode mode;
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switch (ptr->ai_family) {
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case AF_INET:
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mode = NetworkMode::IPv4;
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break;
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case AF_INET6:
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mode = NetworkMode::IPv6;
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break;
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default:
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continue;
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}
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if (mode == NetworkMode::IPv4) {
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struct sockaddr_in* info = (struct sockaddr_in*)ptr->ai_addr;
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set(mode, (uint8_t*)(&info->sin_addr));
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} else {
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struct sockaddr_in6* info = (struct sockaddr_in6*)ptr->ai_addr;
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set(mode, (uint8_t*)(&info->sin6_addr));
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}
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break;
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}
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freeaddrinfo(result);
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}
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}
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void HostAddress::set(NetworkMode mode, uint8_t const* addr) {
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m_mode = mode;
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if (addr)
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memcpy(m_address, addr, size());
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else
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memset(m_address, 0, 16);
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}
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std::ostream& operator<<(std::ostream& os, HostAddress const& address) {
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switch (address.mode()) {
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case NetworkMode::IPv4:
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format(os, "%d.%d.%d.%d", address.octet(0), address.octet(1), address.octet(2), address.octet(3));
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break;
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case NetworkMode::IPv6:
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format(os,
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"%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x",
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address.octet(0),
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address.octet(1),
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address.octet(2),
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address.octet(3),
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address.octet(4),
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address.octet(5),
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address.octet(6),
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address.octet(7),
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address.octet(8),
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address.octet(9),
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address.octet(10),
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address.octet(11),
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address.octet(12),
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address.octet(13),
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address.octet(14),
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address.octet(15));
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break;
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default:
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throw NetworkException(strf("Unknown address mode (%d)", (int)address.mode()));
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}
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return os;
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}
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size_t hash<HostAddress>::operator()(HostAddress const& address) const {
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PLHasher hash;
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for (size_t i = 0; i < address.size(); ++i)
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hash.put(address.octet(i));
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return hash.hash();
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}
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Either<String, HostAddressWithPort> HostAddressWithPort::lookup(String const& address, uint16_t port) {
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auto hostAddress = HostAddress::lookup(address);
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if (hostAddress.isLeft())
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return makeLeft(move(hostAddress.left()));
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else
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return makeRight(HostAddressWithPort(move(hostAddress.right()), port));
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}
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Either<String, HostAddressWithPort> HostAddressWithPort::lookupWithPort(String const& address) {
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String host = address;
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String port = host.rextract(":");
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if (host.beginsWith("[") && host.endsWith("]"))
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host = host.substr(1, host.size() - 2);
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auto portNum = maybeLexicalCast<uint16_t>(port);
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if (!portNum)
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return makeLeft(strf("Could not parse port portion of HostAddressWithPort '%s'", port));
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auto hostAddress = HostAddress::lookup(host);
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if (hostAddress.isLeft())
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return makeLeft(move(hostAddress.left()));
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return makeRight(HostAddressWithPort(move(hostAddress.right()), *portNum));
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}
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HostAddressWithPort::HostAddressWithPort() : m_port(0) {}
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HostAddressWithPort::HostAddressWithPort(HostAddress const& address, uint16_t port)
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: m_address(address), m_port(port) {}
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HostAddressWithPort::HostAddressWithPort(NetworkMode mode, uint8_t* address, uint16_t port) {
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m_address = HostAddress(mode, address);
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m_port = port;
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}
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HostAddressWithPort::HostAddressWithPort(String const& address, uint16_t port) {
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auto a = lookup(address, port);
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if (a.isLeft())
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throw NetworkException(a.left().takeUtf8());
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*this = move(a.right());
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}
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HostAddressWithPort::HostAddressWithPort(String const& address) {
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auto a = lookupWithPort(address);
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if (a.isLeft())
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throw NetworkException(a.left().takeUtf8());
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*this = move(a.right());
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}
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HostAddress HostAddressWithPort::address() const {
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return m_address;
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}
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uint16_t HostAddressWithPort::port() const {
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return m_port;
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}
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bool HostAddressWithPort::operator==(HostAddressWithPort const& rhs) const {
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return tie(m_address, m_port) == tie(rhs.m_address, rhs.m_port);
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}
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std::ostream& operator<<(std::ostream& os, HostAddressWithPort const& addressWithPort) {
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os << addressWithPort.address() << ":" << addressWithPort.port();
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return os;
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}
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size_t hash<HostAddressWithPort>::operator()(HostAddressWithPort const& addressWithPort) const {
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return hashOf(addressWithPort.address(), addressWithPort.port());
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}
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}
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