mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-11-10 07:06:34 +00:00
587 lines
19 KiB
C++
587 lines
19 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stratosphere.hpp>
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#include "socket_api.hpp"
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#include "socket_allocator.hpp"
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extern "C" {
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#include <switch/services/bsd.h>
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}
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namespace ams::socket::impl {
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namespace {
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constinit bool g_initialized = false;
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constinit os::SdkMutex g_heap_mutex;
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constinit lmem::HeapHandle g_heap_handle = nullptr;
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constinit int g_heap_generation = -1;
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ALWAYS_INLINE bool IsInitialized() {
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return g_initialized;
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}
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}
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void *Alloc(size_t size) {
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std::scoped_lock lk(g_heap_mutex);
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AMS_ASSERT(g_heap_generation > 0);
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void *ptr = nullptr;
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if (!g_heap_handle) {
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socket::impl::SetLastError(Errno::EOpNotSupp);
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} else if ((ptr = lmem::AllocateFromExpHeap(g_heap_handle, size)) == nullptr) {
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socket::impl::SetLastError(Errno::ENoMem);
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}
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return ptr;
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}
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void *Calloc(size_t num, size_t size) {
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std::scoped_lock lk(g_heap_mutex);
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AMS_ASSERT(g_heap_generation > 0);
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void *ptr = nullptr;
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if (!g_heap_handle) {
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socket::impl::SetLastError(Errno::EOpNotSupp);
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} else if ((ptr = lmem::AllocateFromExpHeap(g_heap_handle, size * num)) == nullptr) {
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socket::impl::SetLastError(Errno::ENoMem);
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} else {
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std::memset(ptr, 0, size * num);
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}
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return ptr;
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}
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void Free(void *ptr) {
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std::scoped_lock lk(g_heap_mutex);
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AMS_ASSERT(g_heap_generation > 0);
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if (!g_heap_handle) {
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socket::impl::SetLastError(Errno::EOpNotSupp);
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} else if (ptr != nullptr) {
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lmem::FreeToExpHeap(g_heap_handle, ptr);
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}
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}
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bool HeapIsAvailable(int generation) {
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std::scoped_lock lk(g_heap_mutex);
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return g_heap_handle && g_heap_generation == generation;
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}
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int GetHeapGeneration() {
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std::scoped_lock lk(g_heap_mutex);
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return g_heap_generation;
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}
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Errno GetLastError() {
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if (AMS_LIKELY(IsInitialized())) {
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return static_cast<Errno>(errno);
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} else {
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return Errno::EInval;
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}
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}
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void SetLastError(Errno err) {
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if (AMS_LIKELY(IsInitialized())) {
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errno = static_cast<int>(err);
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}
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}
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u32 InetHtonl(u32 host) {
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if constexpr (util::IsBigEndian()) {
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return host;
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} else {
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return util::SwapBytes(host);
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}
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}
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u16 InetHtons(u16 host) {
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if constexpr (util::IsBigEndian()) {
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return host;
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} else {
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return util::SwapBytes(host);
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}
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}
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u32 InetNtohl(u32 net) {
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if constexpr (util::IsBigEndian()) {
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return net;
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} else {
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return util::SwapBytes(net);
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}
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}
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u16 InetNtohs(u16 net) {
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if constexpr (util::IsBigEndian()) {
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return net;
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} else {
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return util::SwapBytes(net);
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}
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}
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namespace {
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void InitializeHeapImpl(void *buffer, size_t size) {
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/* NOTE: Nintendo uses both CreateOption_ThreadSafe *and* a global heap mutex. */
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/* This is unnecessary, and using a single SdkMutex is more performant, since we're not recursive. */
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std::scoped_lock lk(g_heap_mutex);
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g_heap_handle = lmem::CreateExpHeap(buffer, size, lmem::CreateOption_None);
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}
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Result InitializeCommon(const Config &config) {
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/* Check pre-conditions. */
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AMS_ABORT_UNLESS(!IsInitialized());
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AMS_ABORT_UNLESS(config.GetMemoryPool() != nullptr);
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AMS_ABORT_UNLESS(1 <= config.GetConcurrencyCountMax() && config.GetConcurrencyCountMax() <= ConcurrencyLimitMax);
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if (!config.IsSmbpClient()) { AMS_ABORT_UNLESS(config.GetAllocatorPoolSize() < config.GetMemoryPoolSize()); }
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AMS_ABORT_UNLESS(util::IsAligned(config.GetMemoryPoolSize(), os::MemoryPageSize));
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AMS_ABORT_UNLESS(util::IsAligned(config.GetAllocatorPoolSize(), os::MemoryPageSize));
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AMS_ABORT_UNLESS(config.GetAllocatorPoolSize() >= 4_KB);
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if (!config.IsSystemClient()) {
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R_UNLESS(config.GetMemoryPoolSize() >= socket::MinSocketMemoryPoolSize, socket::ResultInsufficientProvidedMemory());
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}
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const size_t transfer_memory_size = config.GetMemoryPoolSize() - config.GetAllocatorPoolSize();
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if (!config.IsSmbpClient()) {
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R_UNLESS(transfer_memory_size >= socket::MinMemHeapAllocatorSize, socket::ResultInsufficientProvidedMemory());
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} else {
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R_UNLESS(config.GetMemoryPoolSize() >= socket::MinimumSharedMbufPoolReservation, socket::ResultInsufficientProvidedMemory());
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}
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/* Initialize the allocator heap. */
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InitializeHeapImpl(static_cast<u8 *>(config.GetMemoryPool()) + transfer_memory_size, config.GetAllocatorPoolSize());
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/* Initialize libnx. */
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{
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const ::BsdInitConfig libnx_config = {
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.version = config.GetVersion(),
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.tmem_buffer = config.GetMemoryPool(),
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.tmem_buffer_size = transfer_memory_size,
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.tcp_tx_buf_size = static_cast<u32>(config.GetTcpInitialSendBufferSize()),
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.tcp_rx_buf_size = static_cast<u32>(config.GetTcpInitialReceiveBufferSize()),
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.tcp_tx_buf_max_size = static_cast<u32>(config.GetTcpAutoSendBufferSizeMax()),
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.tcp_rx_buf_max_size = static_cast<u32>(config.GetTcpAutoReceiveBufferSizeMax()),
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.udp_tx_buf_size = static_cast<u32>(config.GetUdpSendBufferSize()),
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.udp_rx_buf_size = static_cast<u32>(config.GetUdpReceiveBufferSize()),
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.sb_efficiency = static_cast<u32>(config.GetSocketBufferEfficiency()),
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};
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const auto service_type = config.IsSystemClient() ? (1 << 1) : (1 << 0);
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R_ABORT_UNLESS(sm::Initialize());
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R_ABORT_UNLESS(::bsdInitialize(std::addressof(libnx_config), static_cast<u32>(config.GetConcurrencyCountMax()), service_type));
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}
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/* Set the heap generation. */
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g_heap_generation = (g_heap_generation + 1) % MinimumHeapAlignment;
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/* TODO: socket::resolver::EnableResolverCalls()? Not necessary in our case (htc), but consider calling it. */
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g_initialized = true;
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R_SUCCEED();
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}
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ALWAYS_INLINE struct sockaddr *ConvertForLibnx(SockAddr *addr) {
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static_assert(sizeof(SockAddr) == sizeof(struct sockaddr));
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static_assert(alignof(SockAddr) == alignof(struct sockaddr));
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return reinterpret_cast<struct sockaddr *>(addr);
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}
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ALWAYS_INLINE const struct sockaddr *ConvertForLibnx(const SockAddr *addr) {
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static_assert(sizeof(SockAddr) == sizeof(struct sockaddr));
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static_assert(alignof(SockAddr) == alignof(struct sockaddr));
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return reinterpret_cast<const struct sockaddr *>(addr);
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}
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static_assert(std::same_as<SockLenT, socklen_t>);
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Errno TranslateResultToBsdErrorImpl(const Result &result) {
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if (R_SUCCEEDED(result)) {
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return Errno::ESuccess;
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} else if (svc::ResultInvalidCurrentMemory::Includes(result) || svc::ResultOutOfAddressSpace::Includes(result)) {
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return Errno::EFault;
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} else if (sf::hipc::ResultCommunicationError::Includes(result)) {
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return Errno::EL3Hlt;
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} else if (sf::hipc::ResultOutOfResource::Includes(result)) {
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return Errno::EAgain;
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} else {
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R_ABORT_UNLESS(result);
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return static_cast<Errno>(-1);
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}
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}
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ALWAYS_INLINE void TranslateResultToBsdError(Errno &bsd_error, int &result) {
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Errno translate_error = Errno::ESuccess;
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if ((translate_error = TranslateResultToBsdErrorImpl(static_cast<::ams::Result>(::g_bsdResult))) != Errno::ESuccess) {
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bsd_error = translate_error;
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result = -1;
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}
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}
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}
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Result Initialize(const Config &config) {
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return InitializeCommon(config);
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}
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Result Finalize() {
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/* Check pre-conditions. */
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AMS_ABORT_UNLESS(IsInitialized());
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/* TODO: If we support statistics, kill the statistics thread. */
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/* TODO: socket::resolver::DisableResolverCalls()? */
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/* Finalize libnx. */
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::bsdExit();
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/* Finalize the heap. */
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lmem::HeapHandle heap_handle;
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{
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std::scoped_lock lk(g_heap_mutex);
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heap_handle = g_heap_handle;
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g_heap_handle = nullptr;
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}
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lmem::DestroyExpHeap(heap_handle);
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R_SUCCEED();
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}
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Result InitializeAllocatorForInternal(void *buffer, size_t size) {
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/* Check pre-conditions. */
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AMS_ABORT_UNLESS(util::IsAligned(size, os::MemoryPageSize));
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AMS_ABORT_UNLESS(size >= 4_KB);
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InitializeHeapImpl(buffer, size);
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R_SUCCEED();
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}
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ssize_t RecvFrom(s32 desc, void *buffer, size_t buffer_size, MsgFlag flags, SockAddr *out_address, SockLenT *out_addr_len) {
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/* Check pre-conditions. */
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AMS_ABORT_UNLESS(IsInitialized());
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/* Check input. */
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if (buffer_size == 0) {
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return 0;
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} else if (buffer == nullptr) {
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socket::impl::SetLastError(Errno::EInval);
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return -1;
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} else if (buffer_size > std::numeric_limits<u32>::max()) {
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socket::impl::SetLastError(Errno::EFault);
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return -1;
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}
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/* If this is just a normal receive call, perform a normal receive. */
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if (out_address == nullptr || out_addr_len == nullptr || *out_addr_len == 0) {
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return impl::Recv(desc, buffer, buffer_size, flags);
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}
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/* Perform the call. */
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socklen_t length;
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Errno error = Errno::ESuccess;
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int result = ::bsdRecvFrom(desc, buffer, buffer_size, static_cast<int>(flags), ConvertForLibnx(out_address), std::addressof(length));
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TranslateResultToBsdError(error, result);
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if (result >= 0) {
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*out_addr_len = length;
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} else {
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socket::impl::SetLastError(error);
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}
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return result;
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}
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ssize_t Recv(s32 desc, void *buffer, size_t buffer_size, MsgFlag flags) {
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/* Check pre-conditions. */
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AMS_ABORT_UNLESS(IsInitialized());
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/* Check input. */
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if (buffer_size == 0) {
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return 0;
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} else if (buffer == nullptr) {
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socket::impl::SetLastError(Errno::EInval);
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return -1;
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} else if (buffer_size > std::numeric_limits<u32>::max()) {
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socket::impl::SetLastError(Errno::EFault);
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return -1;
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}
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/* Perform the call. */
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Errno error = Errno::ESuccess;
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int result = ::bsdRecv(desc, buffer, buffer_size, static_cast<int>(flags));
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TranslateResultToBsdError(error, result);
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if (result < 0) {
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socket::impl::SetLastError(error);
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}
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return result;
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}
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ssize_t SendTo(s32 desc, const void *buffer, size_t buffer_size, MsgFlag flags, const SockAddr *address, SockLenT len) {
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/* Check pre-conditions. */
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AMS_ABORT_UNLESS(IsInitialized());
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/* If this is a normal send, perform a normal send. */
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if (address == nullptr || len == 0) {
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return impl::Send(desc, buffer, buffer_size, flags);
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}
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/* Check input. */
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if (buffer_size == 0) {
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return 0;
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} else if (buffer == nullptr) {
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socket::impl::SetLastError(Errno::EInval);
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return -1;
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} else if (buffer_size > std::numeric_limits<u32>::max()) {
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socket::impl::SetLastError(Errno::EFault);
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return -1;
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}
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/* Perform the call. */
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Errno error = Errno::ESuccess;
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int result = ::bsdSendTo(desc, buffer, buffer_size, static_cast<int>(flags), ConvertForLibnx(address), len);
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TranslateResultToBsdError(error, result);
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if (result < 0) {
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socket::impl::SetLastError(error);
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}
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return result;
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}
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ssize_t Send(s32 desc, const void *buffer, size_t buffer_size, MsgFlag flags) {
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/* Check pre-conditions. */
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AMS_ABORT_UNLESS(IsInitialized());
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/* Check input. */
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if (buffer_size == 0) {
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return 0;
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} else if (buffer == nullptr) {
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socket::impl::SetLastError(Errno::EInval);
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return -1;
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} else if (buffer_size > std::numeric_limits<u32>::max()) {
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socket::impl::SetLastError(Errno::EFault);
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return -1;
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}
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/* Perform the call. */
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Errno error = Errno::ESuccess;
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int result = ::bsdSend(desc, buffer, buffer_size, static_cast<int>(flags));
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TranslateResultToBsdError(error, result);
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if (result < 0) {
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socket::impl::SetLastError(error);
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}
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return result;
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}
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s32 Shutdown(s32 desc, ShutdownMethod how) {
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/* Check pre-conditions. */
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AMS_ABORT_UNLESS(IsInitialized());
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/* Perform the call. */
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Errno error = Errno::ESuccess;
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int result = ::bsdShutdown(desc, static_cast<int>(how));
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TranslateResultToBsdError(error, result);
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if (result < 0) {
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socket::impl::SetLastError(error);
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}
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return result;
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}
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s32 Socket(Family domain, Type type, Protocol protocol) {
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/* Check pre-conditions. */
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AMS_ABORT_UNLESS(IsInitialized());
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/* Perform the call. */
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Errno error = Errno::ESuccess;
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int result = ::bsdSocket(static_cast<int>(domain), static_cast<int>(type), static_cast<int>(protocol));
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TranslateResultToBsdError(error, result);
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if (result < 0) {
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socket::impl::SetLastError(error);
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}
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return result;
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}
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s32 SocketExempt(Family domain, Type type, Protocol protocol) {
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/* Check pre-conditions. */
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AMS_ABORT_UNLESS(IsInitialized());
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/* Perform the call. */
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Errno error = Errno::ESuccess;
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int result = ::bsdSocketExempt(static_cast<int>(domain), static_cast<int>(type), static_cast<int>(protocol));
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TranslateResultToBsdError(error, result);
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if (result < 0) {
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socket::impl::SetLastError(error);
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}
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return result;
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}
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s32 Accept(s32 desc, SockAddr *out_address, SockLenT *out_addr_len) {
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/* Check pre-conditions. */
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AMS_ABORT_UNLESS(IsInitialized());
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/* Check input. */
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if (out_address == nullptr && out_addr_len != nullptr && *out_addr_len != 0) {
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socket::impl::SetLastError(Errno::EFault);
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return -1;
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}
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socklen_t addrlen = static_cast<socklen_t>((out_address && out_addr_len) ? *out_addr_len : 0);
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/* Perform the call. */
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Errno error = Errno::ESuccess;
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int result = ::bsdAccept(desc, ConvertForLibnx(out_address), std::addressof(addrlen));
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TranslateResultToBsdError(error, result);
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if (result >= 0) {
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if (out_addr_len != nullptr) {
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*out_addr_len = addrlen;
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}
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} else {
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socket::impl::SetLastError(error);
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}
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return result;
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}
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s32 Bind(s32 desc, const SockAddr *address, SockLenT len) {
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/* Check pre-conditions. */
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AMS_ABORT_UNLESS(IsInitialized());
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/* Check input. */
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if (address == nullptr || len == 0) {
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socket::impl::SetLastError(Errno::EInval);
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return -1;
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}
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/* Perform the call. */
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Errno error = Errno::ESuccess;
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int result = ::bsdBind(desc, ConvertForLibnx(address), len);
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TranslateResultToBsdError(error, result);
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if (result < 0) {
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socket::impl::SetLastError(error);
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}
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return result;
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}
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s32 GetSockName(s32 desc, SockAddr *out_address, SockLenT *out_addr_len) {
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/* Check pre-conditions. */
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AMS_ABORT_UNLESS(IsInitialized());
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/* Check input. */
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if (out_address == nullptr || out_addr_len == nullptr || *out_addr_len == 0) {
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socket::impl::SetLastError(Errno::EInval);
|
|
return -1;
|
|
}
|
|
|
|
/* Perform the call. */
|
|
socklen_t length;
|
|
Errno error = Errno::ESuccess;
|
|
int result = ::bsdGetSockName(desc, ConvertForLibnx(out_address), std::addressof(length));
|
|
TranslateResultToBsdError(error, result);
|
|
|
|
if (result >= 0) {
|
|
*out_addr_len = length;
|
|
} else {
|
|
socket::impl::SetLastError(error);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
s32 SetSockOpt(s32 desc, Level level, Option option_name, const void *option_value, SockLenT option_size) {
|
|
/* Check pre-conditions. */
|
|
AMS_ABORT_UNLESS(IsInitialized());
|
|
|
|
/* Check input. */
|
|
if (option_value == nullptr) {
|
|
socket::impl::SetLastError(Errno::EInval);
|
|
return -1;
|
|
}
|
|
|
|
/* Perform the call. */
|
|
Errno error = Errno::ESuccess;
|
|
int result = ::bsdSetSockOpt(desc, static_cast<int>(level), static_cast<int>(option_name), option_value, option_size);
|
|
TranslateResultToBsdError(error, result);
|
|
|
|
if (result < 0) {
|
|
socket::impl::SetLastError(error);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
s32 Listen(s32 desc, s32 backlog) {
|
|
/* Check pre-conditions. */
|
|
AMS_ABORT_UNLESS(IsInitialized());
|
|
|
|
/* Perform the call. */
|
|
Errno error = Errno::ESuccess;
|
|
int result = ::bsdListen(desc, backlog);
|
|
TranslateResultToBsdError(error, result);
|
|
|
|
if (result < 0) {
|
|
socket::impl::SetLastError(error);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
s32 Close(s32 desc) {
|
|
/* Check pre-conditions. */
|
|
AMS_ABORT_UNLESS(IsInitialized());
|
|
|
|
/* Perform the call. */
|
|
Errno error = Errno::ESuccess;
|
|
int result = ::bsdClose(desc);
|
|
TranslateResultToBsdError(error, result);
|
|
|
|
if (result < 0) {
|
|
socket::impl::SetLastError(error);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
}
|