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Top.cpp
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Top.cpp
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// Copyright 2017 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "Core/IOS/Network/IP/Top.h"
#include <algorithm>
#include <array>
#include <cstddef>
#include <cstring>
#include <memory>
#include <optional>
#include <string>
#include <utility>
#include <vector>
#ifndef _WIN32
#include <netdb.h>
#include <poll.h>
#endif
#include <fmt/format.h>
#include "Common/Assert.h"
#include "Common/BitUtils.h"
#include "Common/CommonTypes.h"
#include "Common/Logging/Log.h"
#include "Common/Network.h"
#include "Common/ScopeGuard.h"
#include "Common/StringUtil.h"
#include "Core/Core.h"
#include "Core/HW/Memmap.h"
#include "Core/IOS/Network/ICMP.h"
#include "Core/IOS/Network/MACUtils.h"
#include "Core/IOS/Network/Socket.h"
#include "Core/System.h"
#include "Core/WC24PatchEngine.h"
#ifdef _WIN32
#include <iphlpapi.h>
#include <ws2tcpip.h>
#define MALLOC(x) HeapAlloc(GetProcessHeap(), 0, (x))
#define FREE(x) HeapFree(GetProcessHeap(), 0, (x))
#else
#include <arpa/inet.h>
#include <ifaddrs.h>
#include <netinet/in.h>
#include <resolv.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>
#endif
#ifdef __ANDROID__
#include "jni/AndroidCommon/AndroidCommon.h"
#endif
namespace IOS::HLE
{
enum SOResultCode : s32
{
SO_ERROR_INVALID_REQUEST = -51,
SO_ERROR_HOST_NOT_FOUND = -305,
};
NetIPTopDevice::NetIPTopDevice(EmulationKernel& ios, const std::string& device_name)
: EmulationDevice(ios, device_name)
{
m_work_queue.Reset("Network Worker", [this](AsyncTask task) {
const IPCReply reply = task.handler();
{
std::lock_guard lg(m_async_reply_lock);
m_async_replies.emplace(AsyncReply{task.request, reply.return_value});
}
});
}
void NetIPTopDevice::DoState(PointerWrap& p)
{
Device::DoState(p);
}
static std::optional<u32> inet_pton(const char* src)
{
int saw_digit = 0;
int octets = 0;
std::array<unsigned char, 4> tmp{};
unsigned char* tp = tmp.data();
char ch;
while ((ch = *src++) != '\0')
{
if (ch >= '0' && ch <= '9')
{
unsigned int newt = (*tp * 10) + (ch - '0');
if (newt > 255)
return std::nullopt;
*tp = newt;
if (!saw_digit)
{
if (++octets > 4)
return std::nullopt;
saw_digit = 1;
}
}
else if (ch == '.' && saw_digit)
{
if (octets == 4)
return std::nullopt;
*++tp = 0;
saw_digit = 0;
}
else
{
return std::nullopt;
}
}
if (octets < 4)
return std::nullopt;
return Common::BitCast<u32>(tmp);
}
// Maps SOCKOPT level from Wii to native
static s32 MapWiiSockOptLevelToNative(u32 level)
{
if (level == 0xFFFF)
return SOL_SOCKET;
INFO_LOG_FMT(IOS_NET, "SO_SETSOCKOPT: unknown level {}", level);
return level;
}
// Maps SOCKOPT optname from native to Wii
static s32 MapWiiSockOptNameToNative(u32 optname)
{
switch (optname)
{
case 0x4:
return SO_REUSEADDR;
case 0x80:
return SO_LINGER;
case 0x100:
return SO_OOBINLINE;
case 0x1001:
return SO_SNDBUF;
case 0x1002:
return SO_RCVBUF;
case 0x1003:
return SO_SNDLOWAT;
case 0x1004:
return SO_RCVLOWAT;
case 0x1008:
return SO_TYPE;
case 0x1009:
return SO_ERROR;
}
INFO_LOG_FMT(IOS_NET, "SO_SETSOCKOPT: unknown optname {}", optname);
return optname;
}
// u32 values are in little endian (i.e. 0x0100007f means 127.0.0.1)
struct DefaultInterface
{
u32 inet; // IPv4 address
u32 netmask; // IPv4 subnet mask
u32 broadcast; // IPv4 broadcast address
};
static std::optional<DefaultInterface> GetSystemDefaultInterface()
{
#ifdef _WIN32
std::unique_ptr<MIB_IPFORWARDTABLE> forward_table;
DWORD forward_table_size = 0;
if (GetIpForwardTable(nullptr, &forward_table_size, FALSE) == ERROR_INSUFFICIENT_BUFFER)
{
forward_table =
std::unique_ptr<MIB_IPFORWARDTABLE>((PMIB_IPFORWARDTABLE) operator new(forward_table_size));
}
std::unique_ptr<MIB_IPADDRTABLE> ip_table;
DWORD ip_table_size = 0;
if (GetIpAddrTable(nullptr, &ip_table_size, FALSE) == ERROR_INSUFFICIENT_BUFFER)
{
ip_table = std::unique_ptr<MIB_IPADDRTABLE>((PMIB_IPADDRTABLE) operator new(ip_table_size));
}
// find the interface IP used for the default route and use that
NET_IFINDEX ifIndex = NET_IFINDEX_UNSPECIFIED;
DWORD result = GetIpForwardTable(forward_table.get(), &forward_table_size, FALSE);
// can return ERROR_MORE_DATA on XP even after the first call
while (result == NO_ERROR || result == ERROR_MORE_DATA)
{
for (DWORD i = 0; i < forward_table->dwNumEntries; ++i)
{
if (forward_table->table[i].dwForwardDest == 0)
{
ifIndex = forward_table->table[i].dwForwardIfIndex;
break;
}
}
if (result == NO_ERROR || ifIndex != NET_IFINDEX_UNSPECIFIED)
break;
result = GetIpForwardTable(forward_table.get(), &forward_table_size, FALSE);
}
if (ifIndex != NET_IFINDEX_UNSPECIFIED &&
GetIpAddrTable(ip_table.get(), &ip_table_size, FALSE) == NO_ERROR)
{
for (DWORD i = 0; i < ip_table->dwNumEntries; ++i)
{
const auto& entry = ip_table->table[i];
if (entry.dwIndex == ifIndex)
return DefaultInterface{entry.dwAddr, entry.dwMask, entry.dwBCastAddr};
}
}
#elif defined(__ANDROID__)
const u32 addr = GetNetworkIpAddress();
const u32 prefix_length = GetNetworkPrefixLength();
const u32 netmask = (1 << prefix_length) - 1;
const u32 gateway = GetNetworkGateway();
if (addr || netmask || gateway)
return DefaultInterface{addr, netmask, gateway};
#else
// Assume that the address that is used to access the Internet corresponds
// to the default interface.
auto get_default_address = []() -> std::optional<in_addr> {
const int sock = socket(AF_INET, SOCK_DGRAM, 0);
Common::ScopeGuard sock_guard{[sock] { close(sock); }};
sockaddr_in addr{};
socklen_t length = sizeof(addr);
addr.sin_family = AF_INET;
// The address and port are irrelevant -- no packet is actually sent. These just need to be set
// to a valid IP and port.
addr.sin_addr.s_addr = inet_addr("8.8.8.8");
addr.sin_port = htons(53);
if (connect(sock, reinterpret_cast<const sockaddr*>(&addr), sizeof(addr)) == -1)
return {};
if (getsockname(sock, reinterpret_cast<sockaddr*>(&addr), &length) == -1)
return {};
return addr.sin_addr;
};
auto get_addr = [](const sockaddr* addr) {
return reinterpret_cast<const sockaddr_in*>(addr)->sin_addr.s_addr;
};
const auto default_interface_address = get_default_address();
if (!default_interface_address)
return {};
ifaddrs* iflist;
if (getifaddrs(&iflist) != 0)
return {};
Common::ScopeGuard iflist_guard{[iflist] { freeifaddrs(iflist); }};
for (const ifaddrs* iface = iflist; iface; iface = iface->ifa_next)
{
if (iface->ifa_addr && iface->ifa_addr->sa_family == AF_INET &&
get_addr(iface->ifa_addr) == default_interface_address->s_addr)
{
return DefaultInterface{get_addr(iface->ifa_addr), get_addr(iface->ifa_netmask),
get_addr(iface->ifa_broadaddr)};
}
}
#endif
return std::nullopt;
}
static DefaultInterface GetSystemDefaultInterfaceOrFallback()
{
static const u32 FALLBACK_IP = inet_addr("10.0.1.30");
static const u32 FALLBACK_NETMASK = inet_addr("255.255.255.0");
static const u32 FALLBACK_GATEWAY = inet_addr("10.0.255.255");
static const DefaultInterface FALLBACK_VALUES{FALLBACK_IP, FALLBACK_NETMASK, FALLBACK_GATEWAY};
return GetSystemDefaultInterface().value_or(FALLBACK_VALUES);
}
std::optional<IPCReply> NetIPTopDevice::IOCtl(const IOCtlRequest& request)
{
if (Core::WantsDeterminism())
{
return IPCReply(IPC_EACCES);
}
switch (request.request)
{
case IOCTL_SO_INITINTERFACE:
return HandleInitInterfaceRequest(request);
case IOCTL_SO_SOCKET:
return HandleSocketRequest(request);
case IOCTL_SO_ICMPSOCKET:
return HandleICMPSocketRequest(request);
case IOCTL_SO_CLOSE:
case IOCTL_SO_ICMPCLOSE:
return HandleCloseRequest(request);
case IOCTL_SO_ACCEPT:
case IOCTL_SO_BIND:
case IOCTL_SO_CONNECT:
case IOCTL_SO_FCNTL:
return HandleDoSockRequest(request);
case IOCTL_SO_SHUTDOWN:
return HandleShutdownRequest(request);
case IOCTL_SO_LISTEN:
return HandleListenRequest(request);
case IOCTL_SO_GETSOCKOPT:
return HandleGetSockOptRequest(request);
case IOCTL_SO_SETSOCKOPT:
return HandleSetSockOptRequest(request);
case IOCTL_SO_GETSOCKNAME:
return HandleGetSockNameRequest(request);
case IOCTL_SO_GETPEERNAME:
return HandleGetPeerNameRequest(request);
case IOCTL_SO_GETHOSTID:
return HandleGetHostIDRequest(request);
case IOCTL_SO_INETATON:
return HandleInetAToNRequest(request);
case IOCTL_SO_INETPTON:
return HandleInetPToNRequest(request);
case IOCTL_SO_INETNTOP:
return HandleInetNToPRequest(request);
case IOCTL_SO_POLL:
return HandlePollRequest(request);
case IOCTL_SO_GETHOSTBYNAME:
return LaunchAsyncTask(&NetIPTopDevice::HandleGetHostByNameRequest, request);
case IOCTL_SO_ICMPCANCEL:
return HandleICMPCancelRequest(request);
default:
request.DumpUnknown(GetSystem(), GetDeviceName(), Common::Log::LogType::IOS_NET);
break;
}
return IPCReply(IPC_SUCCESS);
}
std::optional<IPCReply> NetIPTopDevice::IOCtlV(const IOCtlVRequest& request)
{
switch (request.request)
{
case IOCTLV_SO_GETINTERFACEOPT:
return HandleGetInterfaceOptRequest(request);
case IOCTLV_SO_SENDTO:
return HandleSendToRequest(request);
case IOCTLV_SO_RECVFROM:
return HandleRecvFromRequest(request);
case IOCTLV_SO_GETADDRINFO:
return LaunchAsyncTask(&NetIPTopDevice::HandleGetAddressInfoRequest, request);
case IOCTLV_SO_ICMPPING:
return HandleICMPPingRequest(request);
default:
request.DumpUnknown(GetSystem(), GetDeviceName(), Common::Log::LogType::IOS_NET);
break;
}
return IPCReply(IPC_SUCCESS);
}
void NetIPTopDevice::Update()
{
{
std::lock_guard lg(m_async_reply_lock);
while (!m_async_replies.empty())
{
const auto& reply = m_async_replies.front();
GetEmulationKernel().EnqueueIPCReply(reply.request, reply.return_value);
m_async_replies.pop();
}
}
GetEmulationKernel().GetSocketManager()->Update();
}
IPCReply NetIPTopDevice::HandleInitInterfaceRequest(const IOCtlRequest& request)
{
request.Log(GetDeviceName(), Common::Log::LogType::IOS_WC24);
return IPCReply(IPC_SUCCESS);
}
IPCReply NetIPTopDevice::HandleSocketRequest(const IOCtlRequest& request)
{
auto& system = GetSystem();
auto& memory = system.GetMemory();
const u32 af = memory.Read_U32(request.buffer_in);
const u32 type = memory.Read_U32(request.buffer_in + 4);
const u32 prot = memory.Read_U32(request.buffer_in + 8);
const s32 return_value = GetEmulationKernel().GetSocketManager()->NewSocket(af, type, prot);
INFO_LOG_FMT(IOS_NET,
"IOCTL_SO_SOCKET "
"Socket: {:08x} ({},{},{}), BufferIn: ({:08x}, {}), BufferOut: ({:08x}, {})",
return_value, af, type, prot, request.buffer_in, request.buffer_in_size,
request.buffer_out, request.buffer_out_size);
return IPCReply(return_value);
}
IPCReply NetIPTopDevice::HandleICMPSocketRequest(const IOCtlRequest& request)
{
auto& system = GetSystem();
auto& memory = system.GetMemory();
const u32 pf = memory.Read_U32(request.buffer_in);
const s32 return_value =
GetEmulationKernel().GetSocketManager()->NewSocket(pf, SOCK_RAW, IPPROTO_ICMP);
INFO_LOG_FMT(IOS_NET, "IOCTL_SO_ICMPSOCKET({:x}) {}", pf, return_value);
return IPCReply(return_value);
}
IPCReply NetIPTopDevice::HandleCloseRequest(const IOCtlRequest& request)
{
auto& system = GetSystem();
auto& memory = system.GetMemory();
const u32 fd = memory.Read_U32(request.buffer_in);
const s32 return_value = GetEmulationKernel().GetSocketManager()->DeleteSocket(fd);
const char* const close_fn =
request.request == IOCTL_SO_ICMPCLOSE ? "IOCTL_SO_ICMPCLOSE" : "IOCTL_SO_CLOSE";
INFO_LOG_FMT(IOS_NET, "{}({:x}) {:x}", close_fn, fd, return_value);
return IPCReply(return_value);
}
std::optional<IPCReply> NetIPTopDevice::HandleDoSockRequest(const IOCtlRequest& request)
{
auto& system = GetSystem();
auto& memory = system.GetMemory();
const u32 fd = memory.Read_U32(request.buffer_in);
GetEmulationKernel().GetSocketManager()->DoSock(fd, request,
static_cast<NET_IOCTL>(request.request));
return std::nullopt;
}
IPCReply NetIPTopDevice::HandleShutdownRequest(const IOCtlRequest& request)
{
if (request.buffer_in == 0 || request.buffer_in_size < 8)
{
ERROR_LOG_FMT(IOS_NET, "IOCTL_SO_SHUTDOWN = EINVAL, BufferIn: ({:08x}, {})", request.buffer_in,
request.buffer_in_size);
return IPCReply(-SO_EINVAL);
}
auto& system = GetSystem();
auto& memory = system.GetMemory();
const u32 fd = memory.Read_U32(request.buffer_in);
const u32 how = memory.Read_U32(request.buffer_in + 4);
const s32 return_value = GetEmulationKernel().GetSocketManager()->ShutdownSocket(fd, how);
INFO_LOG_FMT(IOS_NET, "IOCTL_SO_SHUTDOWN(fd={}, how={}) = {}", fd, how, return_value);
return IPCReply(return_value);
}
IPCReply NetIPTopDevice::HandleListenRequest(const IOCtlRequest& request)
{
auto& system = GetSystem();
auto& memory = system.GetMemory();
u32 fd = memory.Read_U32(request.buffer_in);
u32 BACKLOG = memory.Read_U32(request.buffer_in + 0x04);
auto socket_manager = GetEmulationKernel().GetSocketManager();
u32 ret = listen(socket_manager->GetHostSocket(fd), BACKLOG);
request.Log(GetDeviceName(), Common::Log::LogType::IOS_WC24);
return IPCReply(socket_manager->GetNetErrorCode(ret, "SO_LISTEN", false));
}
IPCReply NetIPTopDevice::HandleGetSockOptRequest(const IOCtlRequest& request)
{
auto& system = GetSystem();
auto& memory = system.GetMemory();
u32 fd = memory.Read_U32(request.buffer_out);
u32 level = memory.Read_U32(request.buffer_out + 4);
u32 optname = memory.Read_U32(request.buffer_out + 8);
request.Log(GetDeviceName(), Common::Log::LogType::IOS_WC24);
// Do the level/optname translation
int nat_level = MapWiiSockOptLevelToNative(level);
int nat_optname = MapWiiSockOptNameToNative(optname);
u8 optval[20];
u32 optlen = 4;
auto socket_manager = GetEmulationKernel().GetSocketManager();
int ret = getsockopt(socket_manager->GetHostSocket(fd), nat_level, nat_optname, (char*)&optval,
(socklen_t*)&optlen);
const s32 return_value = socket_manager->GetNetErrorCode(ret, "SO_GETSOCKOPT", false);
memory.Write_U32(optlen, request.buffer_out + 0xC);
memory.CopyToEmu(request.buffer_out + 0x10, optval, optlen);
if (optname == SO_ERROR)
{
s32 last_error = socket_manager->GetLastNetError();
memory.Write_U32(sizeof(s32), request.buffer_out + 0xC);
memory.Write_U32(last_error, request.buffer_out + 0x10);
}
return IPCReply(return_value);
}
IPCReply NetIPTopDevice::HandleSetSockOptRequest(const IOCtlRequest& request)
{
auto& system = GetSystem();
auto& memory = system.GetMemory();
const u32 fd = memory.Read_U32(request.buffer_in);
const u32 level = memory.Read_U32(request.buffer_in + 4);
const u32 optname = memory.Read_U32(request.buffer_in + 8);
u32 optlen = memory.Read_U32(request.buffer_in + 0xc);
u8 optval[20];
optlen = std::min(optlen, (u32)sizeof(optval));
memory.CopyFromEmu(optval, request.buffer_in + 0x10, optlen);
INFO_LOG_FMT(IOS_NET,
"IOCTL_SO_SETSOCKOPT({:08x}, {:08x}, {:08x}, {:08x}) "
"BufferIn: ({:08x}, {}), BufferOut: ({:08x}, {})"
"{:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} "
"{:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x}",
fd, level, optname, optlen, request.buffer_in, request.buffer_in_size,
request.buffer_out, request.buffer_out_size, optval[0], optval[1], optval[2],
optval[3], optval[4], optval[5], optval[6], optval[7], optval[8], optval[9],
optval[10], optval[11], optval[12], optval[13], optval[14], optval[15], optval[16],
optval[17], optval[18], optval[19]);
// TODO: bug booto about this, 0x2005 most likely timeout related, default value on Wii is ,
// 0x2001 is most likely tcpnodelay
if (level == 6 && (optname == 0x2005 || optname == 0x2001))
return IPCReply(0);
// Do the level/optname translation
const int nat_level = MapWiiSockOptLevelToNative(level);
const int nat_optname = MapWiiSockOptNameToNative(optname);
auto socket_manager = GetEmulationKernel().GetSocketManager();
const int ret = setsockopt(socket_manager->GetHostSocket(fd), nat_level, nat_optname,
reinterpret_cast<char*>(optval), optlen);
return IPCReply(socket_manager->GetNetErrorCode(ret, "SO_SETSOCKOPT", false));
}
IPCReply NetIPTopDevice::HandleGetSockNameRequest(const IOCtlRequest& request)
{
auto& system = GetSystem();
auto& memory = system.GetMemory();
u32 fd = memory.Read_U32(request.buffer_in);
request.Log(GetDeviceName(), Common::Log::LogType::IOS_WC24);
sockaddr sa;
socklen_t sa_len = sizeof(sa);
const int ret =
getsockname(GetEmulationKernel().GetSocketManager()->GetHostSocket(fd), &sa, &sa_len);
if (request.buffer_out_size < 2 + sizeof(sa.sa_data))
WARN_LOG_FMT(IOS_NET, "IOCTL_SO_GETSOCKNAME output buffer is too small. Truncating");
if (request.buffer_out_size > 0)
memory.Write_U8(request.buffer_out_size, request.buffer_out);
if (request.buffer_out_size > 1)
memory.Write_U8(sa.sa_family & 0xFF, request.buffer_out + 1);
if (request.buffer_out_size > 2)
{
memory.CopyToEmu(request.buffer_out + 2, &sa.sa_data,
std::min<size_t>(sizeof(sa.sa_data), request.buffer_out_size - 2));
}
return IPCReply(ret);
}
IPCReply NetIPTopDevice::HandleGetPeerNameRequest(const IOCtlRequest& request)
{
auto& system = GetSystem();
auto& memory = system.GetMemory();
u32 fd = memory.Read_U32(request.buffer_in);
sockaddr sa;
socklen_t sa_len = sizeof(sa);
const int ret =
getpeername(GetEmulationKernel().GetSocketManager()->GetHostSocket(fd), &sa, &sa_len);
if (request.buffer_out_size < 2 + sizeof(sa.sa_data))
WARN_LOG_FMT(IOS_NET, "IOCTL_SO_GETPEERNAME output buffer is too small. Truncating");
if (request.buffer_out_size > 0)
memory.Write_U8(request.buffer_out_size, request.buffer_out);
if (request.buffer_out_size > 1)
memory.Write_U8(AF_INET, request.buffer_out + 1);
if (request.buffer_out_size > 2)
{
memory.CopyToEmu(request.buffer_out + 2, &sa.sa_data,
std::min<size_t>(sizeof(sa.sa_data), request.buffer_out_size - 2));
}
INFO_LOG_FMT(IOS_NET, "IOCTL_SO_GETPEERNAME({:x})", fd);
return IPCReply(ret);
}
IPCReply NetIPTopDevice::HandleGetHostIDRequest(const IOCtlRequest& request)
{
const DefaultInterface interface = GetSystemDefaultInterfaceOrFallback();
const u32 host_ip = Common::swap32(interface.inet);
INFO_LOG_FMT(IOS_NET, "IOCTL_SO_GETHOSTID = {}.{}.{}.{}", host_ip >> 24, (host_ip >> 16) & 0xFF,
(host_ip >> 8) & 0xFF, host_ip & 0xFF);
return IPCReply(host_ip);
}
IPCReply NetIPTopDevice::HandleInetAToNRequest(const IOCtlRequest& request)
{
auto& system = GetSystem();
auto& memory = system.GetMemory();
const std::string hostname = memory.GetString(request.buffer_in);
struct hostent* remoteHost = gethostbyname(hostname.c_str());
if (remoteHost == nullptr || remoteHost->h_addr_list == nullptr ||
remoteHost->h_addr_list[0] == nullptr)
{
INFO_LOG_FMT(IOS_NET,
"IOCTL_SO_INETATON = -1 "
"{}, BufferIn: ({:08x}, {}), BufferOut: ({:08x}, {}), IP Found: None",
hostname, request.buffer_in, request.buffer_in_size, request.buffer_out,
request.buffer_out_size);
return IPCReply(0);
}
const auto ip = Common::swap32(reinterpret_cast<u8*>(remoteHost->h_addr_list[0]));
memory.Write_U32(ip, request.buffer_out);
INFO_LOG_FMT(IOS_NET,
"IOCTL_SO_INETATON = 0 "
"{}, BufferIn: ({:08x}, {}), BufferOut: ({:08x}, {}), IP Found: {:08X}",
hostname, request.buffer_in, request.buffer_in_size, request.buffer_out,
request.buffer_out_size, ip);
return IPCReply(1);
}
IPCReply NetIPTopDevice::HandleInetPToNRequest(const IOCtlRequest& request)
{
auto& system = GetSystem();
auto& memory = system.GetMemory();
const std::string address = memory.GetString(request.buffer_in);
INFO_LOG_FMT(IOS_NET, "IOCTL_SO_INETPTON (Translating: {})", address);
const std::optional<u32> result = inet_pton(address.c_str());
if (!result)
return IPCReply(0);
memory.CopyToEmu(request.buffer_out + 4, &*result, sizeof(u32));
return IPCReply(1);
}
IPCReply NetIPTopDevice::HandleInetNToPRequest(const IOCtlRequest& request)
{
auto& system = GetSystem();
auto& memory = system.GetMemory();
// u32 af = memory.Read_U32(BufferIn);
// u32 validAddress = memory.Read_U32(request.buffer_in + 4);
// u32 src = memory.Read_U32(request.buffer_in + 8);
char ip_s[16]{};
fmt::format_to_n(ip_s, sizeof(ip_s) - 1, "{}.{}.{}.{}", memory.Read_U8(request.buffer_in + 8),
memory.Read_U8(request.buffer_in + 8 + 1),
memory.Read_U8(request.buffer_in + 8 + 2),
memory.Read_U8(request.buffer_in + 8 + 3));
INFO_LOG_FMT(IOS_NET, "IOCTL_SO_INETNTOP {}", ip_s);
memory.CopyToEmu(request.buffer_out, reinterpret_cast<u8*>(ip_s), std::strlen(ip_s));
return IPCReply(0);
}
std::optional<IPCReply> NetIPTopDevice::HandlePollRequest(const IOCtlRequest& request)
{
auto sm = GetEmulationKernel().GetSocketManager();
if (!request.buffer_in || !request.buffer_out)
return IPCReply(-SO_EINVAL);
auto& system = GetSystem();
auto& memory = system.GetMemory();
// Negative timeout indicates wait forever
const s64 timeout = static_cast<s64>(memory.Read_U64(request.buffer_in));
const u32 nfds = request.buffer_out_size / 0xc;
if (nfds == 0 || nfds > WII_SOCKET_FD_MAX)
{
ERROR_LOG_FMT(IOS_NET, "IOCTL_SO_POLL failed: Invalid array size {}, ret={}", nfds, -SO_EINVAL);
return IPCReply(-SO_EINVAL);
}
std::vector<pollfd_t> ufds(nfds);
for (u32 i = 0; i < nfds; ++i)
{
const s32 wii_fd = memory.Read_U32(request.buffer_out + 0xc * i);
ufds[i].fd = sm->GetHostSocket(wii_fd); // fd
const int events = memory.Read_U32(request.buffer_out + 0xc * i + 4); // events
ufds[i].revents = 0;
// Translate Wii to native events
ufds[i].events = WiiSockMan::ConvertEvents(events, WiiSockMan::ConvertDirection::WiiToNative);
DEBUG_LOG_FMT(IOS_NET,
"IOCTL_SO_POLL({}) "
"Sock: {:08x}, Events: {:08x}, "
"NativeEvents: {:08x}",
i, wii_fd, events, ufds[i].events);
// Do not pass return-only events to the native poll
ufds[i].events &= ~(POLLERR | POLLHUP | POLLNVAL | UNSUPPORTED_WSAPOLL);
}
// Prevents blocking emulation on a blocking poll
sm->AddPollCommand({request.address, request.buffer_out, std::move(ufds), timeout});
return std::nullopt;
}
IPCReply NetIPTopDevice::HandleGetHostByNameRequest(const IOCtlRequest& request)
{
if (request.buffer_out_size != 0x460)
{
ERROR_LOG_FMT(IOS_NET, "Bad buffer size for IOCTL_SO_GETHOSTBYNAME");
return IPCReply(-1);
}
auto& system = GetSystem();
auto& memory = system.GetMemory();
const std::string hostname = memory.GetString(request.buffer_in);
hostent* remoteHost = gethostbyname(hostname.c_str());
INFO_LOG_FMT(IOS_NET,
"IOCTL_SO_GETHOSTBYNAME "
"Address: {}, BufferIn: ({:08x}, {}), BufferOut: ({:08x}, {})",
hostname, request.buffer_in, request.buffer_in_size, request.buffer_out,
request.buffer_out_size);
if (remoteHost == nullptr)
return IPCReply(-1);
for (int i = 0; remoteHost->h_aliases[i]; ++i)
{
DEBUG_LOG_FMT(IOS_NET, "alias{}:{}", i, remoteHost->h_aliases[i]);
}
for (int i = 0; remoteHost->h_addr_list[i]; ++i)
{
const u32 ip = Common::swap32(*(u32*)(remoteHost->h_addr_list[i]));
const std::string ip_s =
fmt::format("{}.{}.{}.{}", ip >> 24, (ip >> 16) & 0xff, (ip >> 8) & 0xff, ip & 0xff);
DEBUG_LOG_FMT(IOS_NET, "addr{}:{}", i, ip_s);
}
// Host name; located immediately after struct
static constexpr u32 GETHOSTBYNAME_STRUCT_SIZE = 0x10;
static constexpr u32 GETHOSTBYNAME_IP_LIST_OFFSET = 0x110;
// Limit host name length to avoid buffer overflow.
const auto name_length = static_cast<u32>(strlen(remoteHost->h_name)) + 1;
if (name_length > (GETHOSTBYNAME_IP_LIST_OFFSET - GETHOSTBYNAME_STRUCT_SIZE))
{
ERROR_LOG_FMT(IOS_NET, "Hostname too long in IOCTL_SO_GETHOSTBYNAME");
return IPCReply(-1);
}
memory.CopyToEmu(request.buffer_out + GETHOSTBYNAME_STRUCT_SIZE, remoteHost->h_name, name_length);
memory.Write_U32(request.buffer_out + GETHOSTBYNAME_STRUCT_SIZE, request.buffer_out);
// IP address list; located at offset 0x110.
u32 num_ip_addr = 0;
while (remoteHost->h_addr_list[num_ip_addr])
num_ip_addr++;
// Limit number of IP addresses to avoid buffer overflow.
// (0x460 - 0x340) / sizeof(pointer) == 72
static const u32 GETHOSTBYNAME_MAX_ADDRESSES = 71;
num_ip_addr = std::min(num_ip_addr, GETHOSTBYNAME_MAX_ADDRESSES);
for (u32 i = 0; i < num_ip_addr; ++i)
{
u32 addr = request.buffer_out + GETHOSTBYNAME_IP_LIST_OFFSET + i * 4;
memory.Write_U32_Swap(*(u32*)(remoteHost->h_addr_list[i]), addr);
}
// List of pointers to IP addresses; located at offset 0x340.
// This must be exact: PPC code to convert the struct hardcodes
// this offset.
static const u32 GETHOSTBYNAME_IP_PTR_LIST_OFFSET = 0x340;
memory.Write_U32(request.buffer_out + GETHOSTBYNAME_IP_PTR_LIST_OFFSET, request.buffer_out + 12);
for (u32 i = 0; i < num_ip_addr; ++i)
{
u32 addr = request.buffer_out + GETHOSTBYNAME_IP_PTR_LIST_OFFSET + i * 4;
memory.Write_U32(request.buffer_out + GETHOSTBYNAME_IP_LIST_OFFSET + i * 4, addr);
}
memory.Write_U32(0, request.buffer_out + GETHOSTBYNAME_IP_PTR_LIST_OFFSET + num_ip_addr * 4);
// Aliases - empty. (Hardware doesn't return anything.)
memory.Write_U32(request.buffer_out + GETHOSTBYNAME_IP_PTR_LIST_OFFSET + num_ip_addr * 4,
request.buffer_out + 4);
// Returned struct must be ipv4.
ASSERT_MSG(IOS_NET, remoteHost->h_addrtype == AF_INET && remoteHost->h_length == sizeof(u32),
"returned host info is not IPv4");
memory.Write_U16(AF_INET, request.buffer_out + 8);
memory.Write_U16(sizeof(u32), request.buffer_out + 10);
return IPCReply(0);
}
IPCReply NetIPTopDevice::HandleICMPCancelRequest(const IOCtlRequest& request)
{
ERROR_LOG_FMT(IOS_NET, "IOCTL_SO_ICMPCANCEL");
return IPCReply(0);
}
IPCReply NetIPTopDevice::HandleGetInterfaceOptRequest(const IOCtlVRequest& request)
{
auto& system = GetSystem();
auto& memory = system.GetMemory();
const u32 param = memory.Read_U32(request.in_vectors[0].address);
const u32 param2 = memory.Read_U32(request.in_vectors[0].address + 4);
const u32 param3 = memory.Read_U32(request.io_vectors[0].address);
const u32 param4 = memory.Read_U32(request.io_vectors[1].address);
u32 param5 = 0;
if (param != 0xfffe)
{
WARN_LOG_FMT(IOS_NET, "GetInterfaceOpt: received invalid request with param0={:08x}", param);
return IPCReply(SO_ERROR_INVALID_REQUEST);
}
if (request.io_vectors[0].size >= 8)
{
param5 = memory.Read_U32(request.io_vectors[0].address + 4);
}
INFO_LOG_FMT(IOS_NET,
"IOCTLV_SO_GETINTERFACEOPT({:08X}, {:08X}, {:X}, {:X}, {:X}) "
"BufferIn: ({:08x}, {}), BufferIn2: ({:08x}, {}) ",
param, param2, param3, param4, param5, request.in_vectors[0].address,
request.in_vectors[0].size,
request.in_vectors.size() > 1 ? request.in_vectors[1].address : 0,
request.in_vectors.size() > 1 ? request.in_vectors[1].size : 0);
switch (param2)
{
case 0xb003: // dns server table
{
const u32 default_main_dns_resolver = ntohl(::inet_addr("8.8.8.8"));
const u32 default_backup_dns_resolver = ntohl(::inet_addr("8.8.4.4"));
u32 address = 0;
#ifdef _WIN32
if (!Core::WantsDeterminism())
{
PIP_ADAPTER_ADDRESSES AdapterAddresses = nullptr;
ULONG OutBufferLength = 0;
ULONG RetVal = 0, i;
for (i = 0; i < 5; ++i)
{
RetVal = GetAdaptersAddresses(AF_INET, 0, nullptr, AdapterAddresses, &OutBufferLength);
if (RetVal != ERROR_BUFFER_OVERFLOW)
{
break;
}
if (AdapterAddresses != nullptr)
{
FREE(AdapterAddresses);
}
AdapterAddresses = (PIP_ADAPTER_ADDRESSES)MALLOC(OutBufferLength);
if (AdapterAddresses == nullptr)
{
RetVal = GetLastError();
break;
}
}
if (RetVal == NO_ERROR)
{
unsigned long dwBestIfIndex = 0;
IPAddr dwDestAddr = static_cast<IPAddr>(default_main_dns_resolver);
// If successful, output some information from the data we received
PIP_ADAPTER_ADDRESSES AdapterList = AdapterAddresses;
if (GetBestInterface(dwDestAddr, &dwBestIfIndex) == NO_ERROR)
{
while (AdapterList)
{
if (AdapterList->IfIndex == dwBestIfIndex && AdapterList->FirstDnsServerAddress &&
AdapterList->OperStatus == IfOperStatusUp)
{
INFO_LOG_FMT(IOS_NET, "Name of valid interface: {}",
WStringToUTF8(AdapterList->FriendlyName));
INFO_LOG_FMT(IOS_NET, "DNS: {}.{}.{}.{}",
u8(AdapterList->FirstDnsServerAddress->Address.lpSockaddr->sa_data[2]),
u8(AdapterList->FirstDnsServerAddress->Address.lpSockaddr->sa_data[3]),
u8(AdapterList->FirstDnsServerAddress->Address.lpSockaddr->sa_data[4]),
u8(AdapterList->FirstDnsServerAddress->Address.lpSockaddr->sa_data[5]));
address = Common::swap32(
*(u32*)(&AdapterList->FirstDnsServerAddress->Address.lpSockaddr->sa_data[2]));
break;
}
AdapterList = AdapterList->Next;
}
}
}
if (AdapterAddresses != nullptr)
{
FREE(AdapterAddresses);
}
}
#elif (defined(__linux__) && !defined(ANDROID)) || defined(__APPLE__) || defined(__FreeBSD__) || \
defined(__OpenBSD__) || defined(__NetBSD__) || defined(__HAIKU__)
if (!Core::WantsDeterminism())
{
if (res_init() == 0)
{
for (int i = 0; i < _res.nscount; i++)
{
// Find the first available IPv4 nameserver.
sockaddr_in current = _res.nsaddr_list[i];
if (current.sin_family == AF_INET)
{
address = ntohl(_res.nsaddr_list[i].sin_addr.s_addr);
break;
}
}
}
else
{
WARN_LOG_FMT(IOS_NET, "Call to res_init failed");
}
}
#endif
if (address == 0)
address = default_main_dns_resolver;
INFO_LOG_FMT(IOS_NET, "Primary DNS: {:X}", address);
INFO_LOG_FMT(IOS_NET, "Secondary DNS: {:X}", default_backup_dns_resolver);
memory.Write_U32(address, request.io_vectors[0].address);
memory.Write_U32(default_backup_dns_resolver, request.io_vectors[0].address + 4);
break;
}
case 0x1003: // error
memory.Write_U32(0, request.io_vectors[0].address);
break;
case 0x1004: // mac address
{
const Common::MACAddress address = IOS::Net::GetMACAddress();
memory.CopyToEmu(request.io_vectors[0].address, address.data(), address.size());
break;
}
case 0x1005: // link state
memory.Write_U32(1, request.io_vectors[0].address);
break;
case 0x3001: // hardcoded value
memory.Write_U32(0x10, request.io_vectors[0].address);
break;
case 0x4002: // ip addr numberHandle
memory.Write_U32(1, request.io_vectors[0].address);
break;
case 0x4003: // ip addr table
{
// XXX: this isn't exactly right; the buffer can be larger than 12 bytes, in which case
// SO can write 12 more bytes.
memory.Write_U32(0xC, request.io_vectors[1].address);
const DefaultInterface interface = GetSystemDefaultInterfaceOrFallback();
memory.Write_U32(Common::swap32(interface.inet), request.io_vectors[0].address);
memory.Write_U32(Common::swap32(interface.netmask), request.io_vectors[0].address + 4);
memory.Write_U32(Common::swap32(interface.broadcast), request.io_vectors[0].address + 8);
break;
}
case 0x4005: // hardcoded value
memory.Write_U32(0x20, request.io_vectors[0].address);
break;
case 0x6003: // hardcoded value
memory.Write_U32(0x80, request.io_vectors[0].address);
break;