osb/source/core/StarHostAddress.cpp

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