mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-11-16 01:49:32 +00:00
218 lines
10 KiB
C++
218 lines
10 KiB
C++
/*
|
|
* Copyright (c) Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <stratosphere.hpp>
|
|
#include "dnsmitm_resolver_impl.hpp"
|
|
#include "dnsmitm_debug.hpp"
|
|
#include "dnsmitm_host_redirection.hpp"
|
|
#include "serializer/serializer.hpp"
|
|
#include "sfdnsres_shim.h"
|
|
|
|
namespace ams::mitm::socket::resolver {
|
|
|
|
ssize_t SerializeRedirectedHostEnt(u8 * const dst, size_t dst_size, const char *hostname, ams::socket::InAddrT redirect_addr) {
|
|
struct in_addr addr = { .s_addr = redirect_addr };
|
|
struct in_addr *addr_list[2] = { std::addressof(addr), nullptr };
|
|
|
|
struct hostent ent = {
|
|
.h_name = const_cast<char *>(hostname),
|
|
.h_aliases = nullptr,
|
|
.h_addrtype = AF_INET,
|
|
.h_length = sizeof(u32),
|
|
.h_addr_list = (char **)addr_list,
|
|
};
|
|
|
|
const auto result = serializer::DNSSerializer::ToBuffer(dst, dst_size, ent);
|
|
AMS_ABORT_UNLESS(result >= 0);
|
|
return result;
|
|
}
|
|
|
|
ssize_t SerializeRedirectedAddrInfo(u8 * const dst, size_t dst_size, const char *hostname, ams::socket::InAddrT redirect_addr, u16 redirect_port, const struct addrinfo *hint) {
|
|
AMS_UNUSED(hostname);
|
|
|
|
struct addrinfo ai = {
|
|
.ai_flags = 0,
|
|
.ai_family = AF_UNSPEC,
|
|
.ai_socktype = 0,
|
|
.ai_protocol = 0,
|
|
.ai_addrlen = 0,
|
|
.ai_canonname = nullptr,
|
|
.ai_next = nullptr,
|
|
};
|
|
|
|
if (hint != nullptr) {
|
|
ai = *hint;
|
|
}
|
|
|
|
switch (ai.ai_family) {
|
|
case AF_UNSPEC: ai.ai_family = AF_INET; break;
|
|
case AF_INET: ai.ai_family = AF_INET; break;
|
|
case AF_INET6: AMS_ABORT("Redirected INET6 not supported"); break;
|
|
AMS_UNREACHABLE_DEFAULT_CASE();
|
|
}
|
|
|
|
if (ai.ai_socktype == 0) {
|
|
ai.ai_socktype = SOCK_STREAM;
|
|
}
|
|
|
|
if (ai.ai_protocol == 0) {
|
|
ai.ai_protocol = IPPROTO_TCP;
|
|
}
|
|
|
|
const struct sockaddr_in sin = {
|
|
.sin_family = AF_INET,
|
|
.sin_port = ams::socket::InetHtons(redirect_port),
|
|
.sin_addr = { .s_addr = redirect_addr },
|
|
.sin_zero = {},
|
|
};
|
|
|
|
ai.ai_addrlen = sizeof(sin);
|
|
ai.ai_addr = (struct sockaddr *)(std::addressof(sin));
|
|
|
|
const auto result = serializer::DNSSerializer::ToBuffer(dst, dst_size, ai);
|
|
AMS_ABORT_UNLESS(result >= 0);
|
|
return result;
|
|
}
|
|
|
|
Result ResolverImpl::GetHostByNameRequest(u32 cancel_handle, const sf::ClientProcessId &client_pid, bool use_nsd_resolve, const sf::InBuffer &name, sf::Out<u32> out_host_error, sf::Out<u32> out_errno, const sf::OutBuffer &out_hostent, sf::Out<u32> out_size) {
|
|
AMS_UNUSED(cancel_handle, client_pid, use_nsd_resolve);
|
|
|
|
const char *hostname = reinterpret_cast<const char *>(name.GetPointer());
|
|
|
|
LogDebug("[%016lx]: GetHostByNameRequest(%s)\n", m_client_info.program_id.value, hostname);
|
|
|
|
R_UNLESS(hostname != nullptr, sm::mitm::ResultShouldForwardToSession());
|
|
|
|
ams::socket::InAddrT redirect_addr = {};
|
|
R_UNLESS(GetRedirectedHostByName(std::addressof(redirect_addr), hostname), sm::mitm::ResultShouldForwardToSession());
|
|
|
|
LogDebug("[%016lx]: Redirecting %s to %u.%u.%u.%u\n", m_client_info.program_id.value, hostname, (redirect_addr >> 0) & 0xFF, (redirect_addr >> 8) & 0xFF, (redirect_addr >> 16) & 0xFF, (redirect_addr >> 24) & 0xFF);
|
|
const auto size = SerializeRedirectedHostEnt(out_hostent.GetPointer(), out_hostent.GetSize(), hostname, redirect_addr);
|
|
|
|
*out_host_error = 0;
|
|
*out_errno = 0;
|
|
*out_size = size;
|
|
|
|
return ResultSuccess();
|
|
}
|
|
|
|
Result ResolverImpl::GetAddrInfoRequest(u32 cancel_handle, const sf::ClientProcessId &client_pid, bool use_nsd_resolve, const sf::InBuffer &node, const sf::InBuffer &srv, const sf::InBuffer &serialized_hint, const sf::OutBuffer &out_addrinfo, sf::Out<u32> out_errno, sf::Out<s32> out_retval, sf::Out<u32> out_size) {
|
|
AMS_UNUSED(cancel_handle, client_pid, use_nsd_resolve);
|
|
|
|
const char *hostname = reinterpret_cast<const char *>(node.GetPointer());
|
|
|
|
LogDebug("[%016lx]: GetAddrInfoRequest(%s, %s)\n", m_client_info.program_id.value, reinterpret_cast<const char *>(node.GetPointer()), reinterpret_cast<const char *>(srv.GetPointer()));
|
|
|
|
R_UNLESS(hostname != nullptr, sm::mitm::ResultShouldForwardToSession());
|
|
|
|
ams::socket::InAddrT redirect_addr = {};
|
|
R_UNLESS(GetRedirectedHostByName(std::addressof(redirect_addr), hostname), sm::mitm::ResultShouldForwardToSession());
|
|
|
|
u16 port = 0;
|
|
if (srv.GetPointer() != nullptr) {
|
|
for (const char *cur = reinterpret_cast<const char *>(srv.GetPointer()); *cur != 0; ++cur) {
|
|
AMS_ABORT_UNLESS(std::isdigit(static_cast<unsigned char>(*cur)));
|
|
port *= 10;
|
|
port += *cur - '0';
|
|
}
|
|
}
|
|
|
|
LogDebug("[%016lx]: Redirecting %s:%u to %u.%u.%u.%u\n", m_client_info.program_id.value, hostname, port, (redirect_addr >> 0) & 0xFF, (redirect_addr >> 8) & 0xFF, (redirect_addr >> 16) & 0xFF, (redirect_addr >> 24) & 0xFF);
|
|
|
|
const bool use_hint = serialized_hint.GetPointer() != nullptr;
|
|
struct addrinfo hint = {};
|
|
if (use_hint) {
|
|
AMS_ABORT_UNLESS(serializer::DNSSerializer::FromBuffer(hint, serialized_hint.GetPointer(), serialized_hint.GetSize()) >= 0);
|
|
}
|
|
ON_SCOPE_EXIT { if (use_hint) { serializer::FreeAddrInfo(hint); } };
|
|
|
|
const auto size = SerializeRedirectedAddrInfo(out_addrinfo.GetPointer(), out_addrinfo.GetSize(), hostname, redirect_addr, port, use_hint ? std::addressof(hint) : nullptr);
|
|
|
|
*out_retval = 0;
|
|
*out_errno = 0;
|
|
*out_size = size;
|
|
|
|
return ResultSuccess();
|
|
}
|
|
|
|
Result ResolverImpl::GetHostByNameRequestWithOptions(const sf::ClientProcessId &client_pid, const sf::InAutoSelectBuffer &name, const sf::OutAutoSelectBuffer &out_hostent, sf::Out<u32> out_size, u32 options_version, const sf::InAutoSelectBuffer &options, u32 num_options, sf::Out<s32> out_host_error, sf::Out<s32> out_errno) {
|
|
AMS_UNUSED(client_pid, options_version, options, num_options);
|
|
|
|
const char *hostname = reinterpret_cast<const char *>(name.GetPointer());
|
|
|
|
LogDebug("[%016lx]: GetHostByNameRequestWithOptions(%s)\n", m_client_info.program_id.value, hostname);
|
|
|
|
R_UNLESS(hostname != nullptr, sm::mitm::ResultShouldForwardToSession());
|
|
|
|
ams::socket::InAddrT redirect_addr = {};
|
|
R_UNLESS(GetRedirectedHostByName(std::addressof(redirect_addr), hostname), sm::mitm::ResultShouldForwardToSession());
|
|
|
|
LogDebug("[%016lx]: Redirecting %s to %u.%u.%u.%u\n", m_client_info.program_id.value, hostname, (redirect_addr >> 0) & 0xFF, (redirect_addr >> 8) & 0xFF, (redirect_addr >> 16) & 0xFF, (redirect_addr >> 24) & 0xFF);
|
|
const auto size = SerializeRedirectedHostEnt(out_hostent.GetPointer(), out_hostent.GetSize(), hostname, redirect_addr);
|
|
|
|
*out_host_error = 0;
|
|
*out_errno = 0;
|
|
*out_size = size;
|
|
|
|
return ResultSuccess();
|
|
}
|
|
|
|
Result ResolverImpl::GetAddrInfoRequestWithOptions(const sf::ClientProcessId &client_pid, const sf::InBuffer &node, const sf::InBuffer &srv, const sf::InBuffer &serialized_hint, const sf::OutAutoSelectBuffer &out_addrinfo, sf::Out<u32> out_size, sf::Out<s32> out_retval, u32 options_version, const sf::InAutoSelectBuffer &options, u32 num_options, sf::Out<s32> out_host_error, sf::Out<s32> out_errno) {
|
|
AMS_UNUSED(client_pid, options_version, options, num_options);
|
|
|
|
const char *hostname = reinterpret_cast<const char *>(node.GetPointer());
|
|
|
|
LogDebug("[%016lx]: GetAddrInfoRequestWithOptions(%s, %s)\n", m_client_info.program_id.value, hostname, reinterpret_cast<const char *>(srv.GetPointer()));
|
|
|
|
R_UNLESS(hostname != nullptr, sm::mitm::ResultShouldForwardToSession());
|
|
|
|
ams::socket::InAddrT redirect_addr = {};
|
|
R_UNLESS(GetRedirectedHostByName(std::addressof(redirect_addr), hostname), sm::mitm::ResultShouldForwardToSession());
|
|
|
|
u16 port = 0;
|
|
if (srv.GetPointer() != nullptr) {
|
|
for (const char *cur = reinterpret_cast<const char *>(srv.GetPointer()); *cur != 0; ++cur) {
|
|
AMS_ABORT_UNLESS(std::isdigit(static_cast<unsigned char>(*cur)));
|
|
port *= 10;
|
|
port += *cur - '0';
|
|
}
|
|
}
|
|
|
|
LogDebug("[%016lx]: Redirecting %s:%u to %u.%u.%u.%u\n", m_client_info.program_id.value, hostname, port, (redirect_addr >> 0) & 0xFF, (redirect_addr >> 8) & 0xFF, (redirect_addr >> 16) & 0xFF, (redirect_addr >> 24) & 0xFF);
|
|
|
|
const bool use_hint = serialized_hint.GetPointer() != nullptr;
|
|
struct addrinfo hint = {};
|
|
if (use_hint) {
|
|
AMS_ABORT_UNLESS(serializer::DNSSerializer::FromBuffer(hint, serialized_hint.GetPointer(), serialized_hint.GetSize()) >= 0);
|
|
}
|
|
ON_SCOPE_EXIT { if (use_hint) { serializer::FreeAddrInfo(hint); } };
|
|
|
|
const auto size = SerializeRedirectedAddrInfo(out_addrinfo.GetPointer(), out_addrinfo.GetSize(), hostname, redirect_addr, port, use_hint ? std::addressof(hint) : nullptr);
|
|
|
|
*out_retval = 0;
|
|
*out_host_error = 0;
|
|
*out_errno = 0;
|
|
*out_size = size;
|
|
|
|
return ResultSuccess();
|
|
}
|
|
|
|
Result ResolverImpl::AtmosphereReloadHostsFile() {
|
|
/* Perform a hosts file reload. */
|
|
InitializeResolverRedirections();
|
|
return ResultSuccess();
|
|
}
|
|
|
|
}
|