mirror of
https://github.com/yuzu-emu/yuzu.git
synced 2024-07-04 23:31:19 +01:00
service: sfdnsres: Implement DNS address resolution
This commit is contained in:
tech-ticks
parent
1c3983c12e
commit
82d46a974a
2 changed files with 198 additions and 6 deletions
|
|
@ -2,8 +2,24 @@
|
|||
// Licensed under GPLv2 or any later version
|
||||
// Refer to the license.txt file included.
|
||||
|
||||
#include <string_view>
|
||||
#include <utility>
|
||||
#include <vector>
|
||||
|
||||
#include "common/string_util.h"
|
||||
#include "common/swap.h"
|
||||
#include "core/core.h"
|
||||
#include "core/hle/ipc_helpers.h"
|
||||
#include "core/hle/service/sockets/sfdnsres.h"
|
||||
#include "core/memory.h"
|
||||
|
||||
#ifdef _WIN32
|
||||
#include <ws2tcpip.h>
|
||||
#elif YUZU_UNIX
|
||||
#include <arpa/inet.h>
|
||||
#include <netdb.h>
|
||||
#include <sys/socket.h>
|
||||
#endif
|
||||
|
||||
namespace Service::Sockets {
|
||||
|
||||
|
|
@ -21,7 +37,7 @@ SFDNSRES::SFDNSRES(Core::System& system_) : ServiceFramework{system_, "sfdnsres"
|
|||
{9, nullptr, "CancelRequest"},
|
||||
{10, nullptr, "GetHostByNameRequestWithOptions"},
|
||||
{11, nullptr, "GetHostByAddrRequestWithOptions"},
|
||||
{12, nullptr, "GetAddrInfoRequestWithOptions"},
|
||||
{12, &SFDNSRES::GetAddrInfoRequestWithOptions, "GetAddrInfoRequestWithOptions"},
|
||||
{13, nullptr, "GetNameInfoRequestWithOptions"},
|
||||
{14, nullptr, "ResolverSetOptionRequest"},
|
||||
{15, nullptr, "ResolverGetOptionRequest"},
|
||||
|
|
@ -31,7 +47,142 @@ SFDNSRES::SFDNSRES(Core::System& system_) : ServiceFramework{system_, "sfdnsres"
|
|||
|
||||
SFDNSRES::~SFDNSRES() = default;
|
||||
|
||||
void SFDNSRES::GetAddrInfoRequest(Kernel::HLERequestContext& ctx) {
|
||||
enum class NetDbError : s32 {
|
||||
Internal = -1,
|
||||
Success = 0,
|
||||
HostNotFound = 1,
|
||||
TryAgain = 2,
|
||||
NoRecovery = 3,
|
||||
NoData = 4,
|
||||
};
|
||||
|
||||
static NetDbError AddrInfoErrorToNetDbError(s32 result) {
|
||||
// Best effort guess to map errors
|
||||
switch (result) {
|
||||
case 0:
|
||||
return NetDbError::Success;
|
||||
case EAI_AGAIN:
|
||||
return NetDbError::TryAgain;
|
||||
case EAI_NODATA:
|
||||
return NetDbError::NoData;
|
||||
default:
|
||||
return NetDbError::HostNotFound;
|
||||
}
|
||||
}
|
||||
|
||||
static std::vector<u8> SerializeAddrInfo(const addrinfo* addrinfo, s32 result_code,
|
||||
std::string_view host) {
|
||||
// Adapted from
|
||||
// https://github.com/switchbrew/libnx/blob/c5a9a909a91657a9818a3b7e18c9b91ff0cbb6e3/nx/source/runtime/resolver.c#L190
|
||||
std::vector<u8> data;
|
||||
|
||||
auto* current = addrinfo;
|
||||
while (current != nullptr) {
|
||||
struct SerializedResponseHeader {
|
||||
u32 magic;
|
||||
s32 flags;
|
||||
s32 family;
|
||||
s32 socket_type;
|
||||
s32 protocol;
|
||||
u32 address_length;
|
||||
};
|
||||
static_assert(sizeof(SerializedResponseHeader) == 0x18,
|
||||
"Response header size must be 0x18 bytes");
|
||||
|
||||
constexpr auto header_size = sizeof(SerializedResponseHeader);
|
||||
const auto addr_size =
|
||||
current->ai_addr && current->ai_addrlen > 0 ? current->ai_addrlen : 4;
|
||||
const auto canonname_size = current->ai_canonname ? strlen(current->ai_canonname) + 1 : 1;
|
||||
|
||||
const auto last_size = data.size();
|
||||
data.resize(last_size + header_size + addr_size + canonname_size);
|
||||
|
||||
// Header in network byte order
|
||||
SerializedResponseHeader header{};
|
||||
|
||||
constexpr auto HEADER_MAGIC = 0xBEEFCAFE;
|
||||
header.magic = htonl(HEADER_MAGIC);
|
||||
header.family = htonl(current->ai_family);
|
||||
header.flags = htonl(current->ai_flags);
|
||||
header.socket_type = htonl(current->ai_socktype);
|
||||
header.protocol = htonl(current->ai_protocol);
|
||||
header.address_length = current->ai_addr ? htonl((u32)current->ai_addrlen) : 0;
|
||||
|
||||
auto* header_ptr = data.data() + last_size;
|
||||
std::memcpy(header_ptr, &header, header_size);
|
||||
|
||||
if (header.address_length == 0) {
|
||||
std::memset(header_ptr + header_size, 0, 4);
|
||||
} else {
|
||||
switch (current->ai_family) {
|
||||
case AF_INET: {
|
||||
struct SockAddrIn {
|
||||
s16 sin_family;
|
||||
u16 sin_port;
|
||||
u32 sin_addr;
|
||||
u8 sin_zero[8];
|
||||
};
|
||||
|
||||
SockAddrIn serialized_addr{};
|
||||
const auto addr = *reinterpret_cast<sockaddr_in*>(current->ai_addr);
|
||||
serialized_addr.sin_port = htons(addr.sin_port);
|
||||
serialized_addr.sin_family = htons(addr.sin_family);
|
||||
serialized_addr.sin_addr = htonl(addr.sin_addr.s_addr);
|
||||
std::memcpy(header_ptr + header_size, &serialized_addr, sizeof(SockAddrIn));
|
||||
|
||||
char addr_string_buf[64]{};
|
||||
inet_ntop(AF_INET, &addr.sin_addr, addr_string_buf, std::size(addr_string_buf));
|
||||
LOG_INFO(Service, "Resolved host '{}' to IPv4 address {}", host, addr_string_buf);
|
||||
break;
|
||||
}
|
||||
case AF_INET6: {
|
||||
struct SockAddrIn6 {
|
||||
s16 sin6_family;
|
||||
u16 sin6_port;
|
||||
u32 sin6_flowinfo;
|
||||
u8 sin6_addr[16];
|
||||
u32 sin6_scope_id;
|
||||
};
|
||||
|
||||
SockAddrIn6 serialized_addr{};
|
||||
const auto addr = *reinterpret_cast<sockaddr_in6*>(current->ai_addr);
|
||||
serialized_addr.sin6_family = htons(addr.sin6_family);
|
||||
serialized_addr.sin6_port = htons(addr.sin6_port);
|
||||
serialized_addr.sin6_flowinfo = htonl(addr.sin6_flowinfo);
|
||||
serialized_addr.sin6_scope_id = htonl(addr.sin6_scope_id);
|
||||
std::memcpy(serialized_addr.sin6_addr, &addr.sin6_addr,
|
||||
sizeof(SockAddrIn6::sin6_addr));
|
||||
std::memcpy(header_ptr + header_size, &serialized_addr, sizeof(SockAddrIn6));
|
||||
|
||||
char addr_string_buf[64]{};
|
||||
inet_ntop(AF_INET6, &addr.sin6_addr, addr_string_buf, std::size(addr_string_buf));
|
||||
LOG_INFO(Service, "Resolved host '{}' to IPv6 address {}", host, addr_string_buf);
|
||||
break;
|
||||
}
|
||||
default:
|
||||
std::memcpy(header_ptr + header_size, current->ai_addr, addr_size);
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (current->ai_canonname) {
|
||||
std::memcpy(header_ptr + addr_size, current->ai_canonname, canonname_size);
|
||||
} else {
|
||||
*(header_ptr + header_size + addr_size) = 0;
|
||||
}
|
||||
|
||||
current = current->ai_next;
|
||||
}
|
||||
|
||||
// 4-byte sentinel value
|
||||
data.push_back(0);
|
||||
data.push_back(0);
|
||||
data.push_back(0);
|
||||
data.push_back(0);
|
||||
|
||||
return data;
|
||||
}
|
||||
|
||||
static std::pair<u32, s32> GetAddrInfoRequestImpl(Kernel::HLERequestContext& ctx) {
|
||||
struct Parameters {
|
||||
u8 use_nsd_resolve;
|
||||
u32 unknown;
|
||||
|
|
@ -42,11 +193,51 @@ void SFDNSRES::GetAddrInfoRequest(Kernel::HLERequestContext& ctx) {
|
|||
const auto parameters = rp.PopRaw<Parameters>();
|
||||
|
||||
LOG_WARNING(Service,
|
||||
"(STUBBED) called. use_nsd_resolve={}, unknown=0x{:08X}, process_id=0x{:016X}",
|
||||
"called with ignored parameters: use_nsd_resolve={}, unknown={}, process_id={}",
|
||||
parameters.use_nsd_resolve, parameters.unknown, parameters.process_id);
|
||||
|
||||
IPC::ResponseBuilder rb{ctx, 2};
|
||||
rb.Push(ResultSuccess);
|
||||
const auto host_buffer = ctx.ReadBuffer(0);
|
||||
const std::string host = Common::StringFromBuffer(host_buffer);
|
||||
|
||||
const auto service_buffer = ctx.ReadBuffer(1);
|
||||
const std::string service = Common::StringFromBuffer(service_buffer);
|
||||
|
||||
addrinfo* addrinfo;
|
||||
// Pass null for hints. Serialized hints are also passed in a buffer, but are ignored for now
|
||||
s32 result_code = getaddrinfo(host.c_str(), service.c_str(), nullptr, &addrinfo);
|
||||
|
||||
u32 data_size = 0;
|
||||
if (result_code == 0 && addrinfo != nullptr) {
|
||||
const std::vector<u8>& data = SerializeAddrInfo(addrinfo, result_code, host);
|
||||
data_size = static_cast<u32>(data.size());
|
||||
freeaddrinfo(addrinfo);
|
||||
|
||||
ctx.WriteBuffer(data, 0);
|
||||
}
|
||||
|
||||
return std::make_pair(data_size, result_code);
|
||||
}
|
||||
|
||||
} // namespace Service::Sockets
|
||||
void SFDNSRES::GetAddrInfoRequest(Kernel::HLERequestContext& ctx) {
|
||||
auto [data_size, result_code] = GetAddrInfoRequestImpl(ctx);
|
||||
|
||||
IPC::ResponseBuilder rb{ctx, 4};
|
||||
rb.Push(ResultSuccess);
|
||||
rb.Push(static_cast<s32>(AddrInfoErrorToNetDbError(result_code))); // NetDBErrorCode
|
||||
rb.Push(result_code); // errno
|
||||
rb.Push(data_size); // serialized size
|
||||
}
|
||||
|
||||
void SFDNSRES::GetAddrInfoRequestWithOptions(Kernel::HLERequestContext& ctx) {
|
||||
// Additional options are ignored
|
||||
auto [data_size, result_code] = GetAddrInfoRequestImpl(ctx);
|
||||
|
||||
IPC::ResponseBuilder rb{ctx, 5};
|
||||
rb.Push(ResultSuccess);
|
||||
rb.Push(data_size); // serialized size
|
||||
rb.Push(result_code); // errno
|
||||
rb.Push(static_cast<s32>(AddrInfoErrorToNetDbError(result_code))); // NetDBErrorCode
|
||||
rb.Push(0);
|
||||
}
|
||||
|
||||
} // namespace Service::Sockets
|
||||
|
|
@ -19,6 +19,7 @@ public:
|
|||
|
||||
private:
|
||||
void GetAddrInfoRequest(Kernel::HLERequestContext& ctx);
|
||||
void GetAddrInfoRequestWithOptions(Kernel::HLERequestContext& ctx);
|
||||
};
|
||||
|
||||
} // namespace Service::Sockets
|
||||
|
|
|
|||
Loading…
Reference in a new issue