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-rw-r--r--windows/windns/src/windns/windns.cpp321
1 files changed, 0 insertions, 321 deletions
diff --git a/windows/windns/src/windns/windns.cpp b/windows/windns/src/windns/windns.cpp
deleted file mode 100644
index f7cc35f27f..0000000000
--- a/windows/windns/src/windns/windns.cpp
+++ /dev/null
@@ -1,321 +0,0 @@
-#include "stdafx.h"
-#include <libcommon/guid.h>
-#include <libcommon/string.h>
-#include <libcommon/error.h>
-#include <libshared/network/interfaceutils.h>
-#include <libcommon/logging/ilogsink.h>
-#include <libshared/logging/logsinkadapter.h>
-#include "windns.h"
-#include "confineoperation.h"
-#include "netsh.h"
-#include <memory>
-#include <vector>
-#include <string>
-#include <sstream>
-#include <ws2tcpip.h>
-#include <ws2ipdef.h>
-#include <winsock2.h> // magic order :-(
-#include <iphlpapi.h> // if we don't do this then most of iphlpapi is not actually defined
-
-bool operator==(const IN_ADDR &lhs, const IN_ADDR &rhs)
-{
- return 0 == memcmp(&lhs, &rhs, sizeof(IN_ADDR));
-}
-
-bool operator==(const IN6_ADDR &lhs, const IN6_ADDR &rhs)
-{
- return 0 == memcmp(&lhs, &rhs, sizeof(IN6_ADDR));
-}
-
-namespace
-{
-
-std::shared_ptr<common::logging::ILogSink> g_LogSink;
-std::shared_ptr<NetSh> g_NetSh;
-
-std::vector<std::wstring> MakeStringArray(const wchar_t **strings, uint32_t numStrings)
-{
- std::vector<std::wstring> v;
-
- while (numStrings--)
- {
- v.emplace_back(*strings++);
- }
-
- return v;
-}
-
-uint32_t ConvertInterfaceLuidToIndex(const NET_LUID &luid)
-{
- NET_IFINDEX index;
-
- if (NO_ERROR != ConvertInterfaceLuidToIndex(&luid, &index))
- {
- std::wstringstream ss;
-
- ss << L"Could not resolve index of interface with LUID: 0x"
- << std::hex << luid.Value;
-
- THROW_ERROR(common::string::ToAnsi(ss.str()).c_str());
- }
-
- return static_cast<uint32_t>(index);
-}
-
-struct AdapterDnsAddresses
-{
- std::vector<IN_ADDR> ipv4;
- std::vector<IN6_ADDR> ipv6;
-};
-
-//
-// The adapter structure that is returned has two fields for interface index.
-// If IPv4 is enabled, 'IfIndex' will be set. Otherwise set to 0.
-// If IPv6 is enabled, 'Ipv6IfIndex' will be set. Otherwise set to 0.
-// If both IPv4 and IPv6 is enabled, then both fields will be set, and have the same value.
-//
-AdapterDnsAddresses GetAdapterDnsAddresses(const NET_LUID &adapterLuid)
-{
- using shared::network::InterfaceUtils;
-
- const auto adapters = InterfaceUtils::GetAllAdapters(
- AF_UNSPEC,
- GAA_FLAG_SKIP_UNICAST | GAA_FLAG_SKIP_ANYCAST | GAA_FLAG_SKIP_MULTICAST
- );
-
- for (const auto adapter : adapters)
- {
- if (adapterLuid.Value != adapter.raw().Luid.Value)
- {
- continue;
- }
-
- AdapterDnsAddresses out;
-
- for (auto server = adapter.raw().FirstDnsServerAddress; nullptr != server; server = server->Next)
- {
- if (AF_INET == server->Address.lpSockaddr->sa_family)
- {
- out.ipv4.push_back(((const SOCKADDR_IN*)server->Address.lpSockaddr)->sin_addr);
- }
- else if (AF_INET6 == server->Address.lpSockaddr->sa_family)
- {
- out.ipv6.push_back(((const SOCKADDR_IN6_LH*)server->Address.lpSockaddr)->sin6_addr);
- }
- }
-
- return out;
- }
-
- std::stringstream ss;
- ss << "Could not find interface with LUID: 0x" << std::hex << adapterLuid.Value;
- THROW_ERROR(ss.str().c_str());
-}
-
-AdapterDnsAddresses ConvertAddresses(
- const wchar_t **ipv4Servers,
- uint32_t numIpv4Servers,
- const wchar_t **ipv6Servers,
- uint32_t numIpv6Servers
-)
-{
- AdapterDnsAddresses out;
-
- if (nullptr != ipv4Servers && 0 != numIpv4Servers)
- {
- for (uint32_t i = 0; i < numIpv4Servers; ++i)
- {
- IN_ADDR converted;
-
- if (1 != InetPtonW(AF_INET, ipv4Servers[i], &converted))
- {
- THROW_ERROR("Failed to convert IPv4 address");
- }
-
- out.ipv4.push_back(converted);
- }
- }
-
- if (nullptr != ipv6Servers && 0 != numIpv6Servers)
- {
- for (uint32_t i = 0; i < numIpv6Servers; ++i)
- {
- IN6_ADDR converted;
-
- if (1 != InetPtonW(AF_INET6, ipv6Servers[i], &converted))
- {
- THROW_ERROR("Failed to convert IPv6 address");
- }
-
- out.ipv6.push_back(converted);
- }
- }
-
- return out;
-}
-
-bool Equal(const AdapterDnsAddresses &lhs, const AdapterDnsAddresses &rhs)
-{
- return lhs.ipv4 == rhs.ipv4
- && lhs.ipv6 == rhs.ipv6;
-}
-
-} // anonymous namespace
-
-WINDNS_LINKAGE
-bool
-WINDNS_API
-WinDns_Initialize(
- MullvadLogSink logSink,
- void *logSinkContext
-)
-{
- if (g_LogSink)
- {
- return false;
- }
-
- try
- {
- g_LogSink = std::make_shared<shared::logging::LogSinkAdapter>(logSink, logSinkContext);
-
- try
- {
- g_NetSh = std::make_shared<NetSh>(g_LogSink);
- }
- catch (...)
- {
- g_LogSink.reset();
- throw;
- }
-
- return true;
- }
- catch (const std::exception &err)
- {
- if (nullptr != logSink)
- {
- const auto msg = std::string("Failed to initialize WinDns: ").append(err.what());
- logSink(MULLVAD_LOG_LEVEL_ERROR, msg.c_str(), logSinkContext);
- }
-
- return false;
- }
- catch (...)
- {
- if (nullptr != logSink)
- {
- const std::string msg("Failed to initialize WinDns: Unspecified error");
- logSink(MULLVAD_LOG_LEVEL_ERROR, msg.c_str(), logSinkContext);
- }
-
- return false;
- }
-}
-
-WINDNS_LINKAGE
-bool
-WINDNS_API
-WinDns_Deinitialize(
-)
-{
- g_NetSh.reset();
- g_LogSink.reset();
-
- return true;
-}
-
-WINDNS_LINKAGE
-bool
-WINDNS_API
-WinDns_Set(
- const NET_LUID *interfaceLuid,
- const wchar_t **ipv4Servers,
- uint32_t numIpv4Servers,
- const wchar_t **ipv6Servers,
- uint32_t numIpv6Servers
-)
-{
- if (nullptr == g_LogSink)
- {
- return false;
- }
-
- if (nullptr == interfaceLuid)
- {
- g_LogSink->error("Invalid argument: interfaceLuid");
- return false;
- }
-
- //
- // Check the settings on the adapter.
- // If it already has the exact same settings we need, we're done.
- //
- try
- {
- const auto activeSettings = GetAdapterDnsAddresses(*interfaceLuid);
- const auto wantedSetting = ConvertAddresses(ipv4Servers, numIpv4Servers, ipv6Servers, numIpv6Servers);
-
- if (Equal(activeSettings, wantedSetting))
- {
- std::stringstream ss;
-
- ss << "DNS settings on adapter with LUID 0x" << std::hex << interfaceLuid->Value << " are up-to-date";
-
- g_LogSink->info(ss.str().c_str());
-
- return true;
- }
- }
- catch (const std::exception &err)
- {
- std::stringstream ss;
-
- ss << "Failed to evaluate DNS settings on adapter with LUID 0x"
- << std::hex << interfaceLuid->Value << ": " << err.what();
-
- g_LogSink->info(ss.str().c_str());
- }
- catch (...)
- {
- std::stringstream ss;
-
- ss << "Failed to evaluate DNS settings on adapter with LUID 0x"
- << std::hex << interfaceLuid->Value << ": Unspecified failure";
-
- g_LogSink->info(ss.str().c_str());
- }
-
- //
- // Apply specified settings.
- //
-
- std::stringstream operation;
- operation << "Apply DNS settings on adapter with LUID 0x"
- << std::hex << interfaceLuid->Value;
-
- return ConfineOperation(operation.str().c_str(), g_LogSink, [&]()
- {
- const auto interfaceIndex = ConvertInterfaceLuidToIndex(*interfaceLuid);
-
- if (nullptr != ipv4Servers && 0 != numIpv4Servers)
- {
- g_NetSh->setIpv4StaticDns(interfaceIndex, MakeStringArray(ipv4Servers, numIpv4Servers));
- }
- else
- {
- // This is required to clear any current settings.
- g_NetSh->setIpv4DhcpDns(interfaceIndex);
- }
-
- if (nullptr != ipv6Servers && 0 != numIpv6Servers)
- {
- g_NetSh->setIpv6StaticDns(interfaceIndex, MakeStringArray(ipv6Servers, numIpv6Servers));
- }
- else
- {
- // This is required to clear any current settings.
- g_NetSh->setIpv6DhcpDns(interfaceIndex);
- }
- });
-}
Copyright © 2025 - 2026 Wayne Cole. WTFPL. Attribution appreciated. No warranty. Not liable for bodily damages.