blob: 06171d49bf68fcace7c51a425cc0ae1879a94cb7 [file] [log] [blame]
//===-- SocketAddress.cpp ---------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Note: This file is used on Darwin by debugserver, so it needs to remain as
// self contained as possible, and devoid of references to LLVM unless
// there is compelling reason.
//
//===----------------------------------------------------------------------===//
#if defined(_MSC_VER)
#define _WINSOCK_DEPRECATED_NO_WARNINGS
#endif
#include "lldb/Host/SocketAddress.h"
#include <stddef.h>
#include <stdio.h>
#if !defined(_WIN32)
#include <arpa/inet.h>
#endif
#include <assert.h>
#include <string.h>
#include "lldb/Host/PosixApi.h"
// WindowsXP needs an inet_ntop implementation
#ifdef _WIN32
#ifndef INET6_ADDRSTRLEN // might not be defined in older Windows SDKs
#define INET6_ADDRSTRLEN 46
#endif
// TODO: implement shortened form "::" for runs of zeros
const char *inet_ntop(int af, const void *src, char *dst, socklen_t size) {
if (size == 0) {
return nullptr;
}
switch (af) {
case AF_INET: {
{
const char *formatted = inet_ntoa(*static_cast<const in_addr *>(src));
if (formatted && strlen(formatted) < static_cast<size_t>(size)) {
return ::strcpy(dst, formatted);
}
}
return nullptr;
case AF_INET6: {
char tmp[INET6_ADDRSTRLEN] = {0};
const uint16_t *src16 = static_cast<const uint16_t *>(src);
int full_size = ::snprintf(
tmp, sizeof(tmp), "%x:%x:%x:%x:%x:%x:%x:%x", ntohs(src16[0]),
ntohs(src16[1]), ntohs(src16[2]), ntohs(src16[3]), ntohs(src16[4]),
ntohs(src16[5]), ntohs(src16[6]), ntohs(src16[7]));
if (full_size < static_cast<int>(size)) {
return ::strcpy(dst, tmp);
}
return nullptr;
}
}
}
return nullptr;
}
#endif
using namespace lldb_private;
// SocketAddress constructor
SocketAddress::SocketAddress() { Clear(); }
SocketAddress::SocketAddress(const struct sockaddr &s) { m_socket_addr.sa = s; }
SocketAddress::SocketAddress(const struct sockaddr_in &s) {
m_socket_addr.sa_ipv4 = s;
}
SocketAddress::SocketAddress(const struct sockaddr_in6 &s) {
m_socket_addr.sa_ipv6 = s;
}
SocketAddress::SocketAddress(const struct sockaddr_storage &s) {
m_socket_addr.sa_storage = s;
}
SocketAddress::SocketAddress(const struct addrinfo *addr_info) {
*this = addr_info;
}
// Destructor
SocketAddress::~SocketAddress() {}
void SocketAddress::Clear() {
memset(&m_socket_addr, 0, sizeof(m_socket_addr));
}
bool SocketAddress::IsValid() const { return GetLength() != 0; }
static socklen_t GetFamilyLength(sa_family_t family) {
switch (family) {
case AF_INET:
return sizeof(struct sockaddr_in);
case AF_INET6:
return sizeof(struct sockaddr_in6);
}
assert(0 && "Unsupported address family");
return 0;
}
socklen_t SocketAddress::GetLength() const {
#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__)
return m_socket_addr.sa.sa_len;
#else
return GetFamilyLength(GetFamily());
#endif
}
socklen_t SocketAddress::GetMaxLength() { return sizeof(sockaddr_t); }
sa_family_t SocketAddress::GetFamily() const {
return m_socket_addr.sa.sa_family;
}
void SocketAddress::SetFamily(sa_family_t family) {
m_socket_addr.sa.sa_family = family;
#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__)
m_socket_addr.sa.sa_len = GetFamilyLength(family);
#endif
}
std::string SocketAddress::GetIPAddress() const {
char str[INET6_ADDRSTRLEN] = {0};
switch (GetFamily()) {
case AF_INET:
if (inet_ntop(GetFamily(), &m_socket_addr.sa_ipv4.sin_addr, str,
sizeof(str)))
return str;
break;
case AF_INET6:
if (inet_ntop(GetFamily(), &m_socket_addr.sa_ipv6.sin6_addr, str,
sizeof(str)))
return str;
break;
}
return "";
}
uint16_t SocketAddress::GetPort() const {
switch (GetFamily()) {
case AF_INET:
return ntohs(m_socket_addr.sa_ipv4.sin_port);
case AF_INET6:
return ntohs(m_socket_addr.sa_ipv6.sin6_port);
}
return 0;
}
bool SocketAddress::SetPort(uint16_t port) {
switch (GetFamily()) {
case AF_INET:
m_socket_addr.sa_ipv4.sin_port = htons(port);
return true;
case AF_INET6:
m_socket_addr.sa_ipv6.sin6_port = htons(port);
return true;
}
return false;
}
// SocketAddress assignment operator
const SocketAddress &SocketAddress::operator=(const SocketAddress &rhs) {
if (this != &rhs)
m_socket_addr = rhs.m_socket_addr;
return *this;
}
const SocketAddress &SocketAddress::
operator=(const struct addrinfo *addr_info) {
Clear();
if (addr_info && addr_info->ai_addr && addr_info->ai_addrlen > 0 &&
size_t(addr_info->ai_addrlen) <= sizeof m_socket_addr) {
::memcpy(&m_socket_addr, addr_info->ai_addr, addr_info->ai_addrlen);
}
return *this;
}
const SocketAddress &SocketAddress::operator=(const struct sockaddr &s) {
m_socket_addr.sa = s;
return *this;
}
const SocketAddress &SocketAddress::operator=(const struct sockaddr_in &s) {
m_socket_addr.sa_ipv4 = s;
return *this;
}
const SocketAddress &SocketAddress::operator=(const struct sockaddr_in6 &s) {
m_socket_addr.sa_ipv6 = s;
return *this;
}
const SocketAddress &SocketAddress::
operator=(const struct sockaddr_storage &s) {
m_socket_addr.sa_storage = s;
return *this;
}
bool SocketAddress::getaddrinfo(const char *host, const char *service,
int ai_family, int ai_socktype, int ai_protocol,
int ai_flags) {
Clear();
auto addresses = GetAddressInfo(host, service, ai_family, ai_socktype,
ai_protocol, ai_flags);
if (!addresses.empty())
*this = addresses[0];
return IsValid();
}
std::vector<SocketAddress>
SocketAddress::GetAddressInfo(const char *hostname, const char *servname,
int ai_family, int ai_socktype, int ai_protocol,
int ai_flags) {
std::vector<SocketAddress> addr_list;
struct addrinfo hints;
memset(&hints, 0, sizeof(hints));
hints.ai_family = ai_family;
hints.ai_socktype = ai_socktype;
hints.ai_protocol = ai_protocol;
hints.ai_flags = ai_flags;
struct addrinfo *service_info_list = NULL;
int err = ::getaddrinfo(hostname, servname, &hints, &service_info_list);
if (err == 0 && service_info_list) {
for (struct addrinfo *service_ptr = service_info_list; service_ptr != NULL;
service_ptr = service_ptr->ai_next) {
addr_list.emplace_back(SocketAddress(service_ptr));
}
}
if (service_info_list)
::freeaddrinfo(service_info_list);
return addr_list;
}
bool SocketAddress::SetToLocalhost(sa_family_t family, uint16_t port) {
switch (family) {
case AF_INET:
SetFamily(AF_INET);
if (SetPort(port)) {
m_socket_addr.sa_ipv4.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
return true;
}
break;
case AF_INET6:
SetFamily(AF_INET6);
if (SetPort(port)) {
m_socket_addr.sa_ipv6.sin6_addr = in6addr_loopback;
return true;
}
break;
}
Clear();
return false;
}
bool SocketAddress::SetToAnyAddress(sa_family_t family, uint16_t port) {
switch (family) {
case AF_INET:
SetFamily(AF_INET);
if (SetPort(port)) {
m_socket_addr.sa_ipv4.sin_addr.s_addr = htonl(INADDR_ANY);
return true;
}
break;
case AF_INET6:
SetFamily(AF_INET6);
if (SetPort(port)) {
m_socket_addr.sa_ipv6.sin6_addr = in6addr_any;
return true;
}
break;
}
Clear();
return false;
}
bool SocketAddress::IsAnyAddr() const {
return (GetFamily() == AF_INET)
? m_socket_addr.sa_ipv4.sin_addr.s_addr == htonl(INADDR_ANY)
: 0 == memcmp(&m_socket_addr.sa_ipv6.sin6_addr, &in6addr_any, 16);
}
bool SocketAddress::IsLocalhost() const {
return (GetFamily() == AF_INET)
? m_socket_addr.sa_ipv4.sin_addr.s_addr == htonl(INADDR_LOOPBACK)
: 0 == memcmp(&m_socket_addr.sa_ipv6.sin6_addr, &in6addr_loopback,
16);
}
bool SocketAddress::operator==(const SocketAddress &rhs) const {
if (GetFamily() != rhs.GetFamily())
return false;
if (GetLength() != rhs.GetLength())
return false;
switch (GetFamily()) {
case AF_INET:
return m_socket_addr.sa_ipv4.sin_addr.s_addr ==
rhs.m_socket_addr.sa_ipv4.sin_addr.s_addr;
case AF_INET6:
return 0 == memcmp(&m_socket_addr.sa_ipv6.sin6_addr,
&rhs.m_socket_addr.sa_ipv6.sin6_addr, 16);
}
return false;
}
bool SocketAddress::operator!=(const SocketAddress &rhs) const {
return !(*this == rhs);
}