@ -5,662 +5,191 @@
# include <io.h>
# include <fcntl.h>
# include <llarp/util/thread/queue.hpp>
# include <llarp/ev/vpn.hpp>
# include <llarp/router/abstractrouter.hpp>
# include <llarp/win32/exec.hpp>
# include <llarp/win32/windivert.hpp>
# include <llarp/win32/wintun.hpp>
# include <llarp.hpp>
# include <fmt/std.h>
// DDK macros
# define CTL_CODE(DeviceType, Function, Method, Access) \
( ( ( DeviceType ) < < 16 ) | ( ( Access ) < < 14 ) | ( ( Function ) < < 2 ) | ( Method ) )
# define FILE_DEVICE_UNKNOWN 0x00000022
# define FILE_ANY_ACCESS 0x00000000
# define METHOD_BUFFERED 0
/* From OpenVPN tap driver, common.h */
# define TAP_CONTROL_CODE(request, method) \
CTL_CODE ( FILE_DEVICE_UNKNOWN , request , method , FILE_ANY_ACCESS )
# define TAP_IOCTL_GET_MAC TAP_CONTROL_CODE(1, METHOD_BUFFERED)
# define TAP_IOCTL_GET_VERSION TAP_CONTROL_CODE(2, METHOD_BUFFERED)
# define TAP_IOCTL_GET_MTU TAP_CONTROL_CODE(3, METHOD_BUFFERED)
# define TAP_IOCTL_GET_INFO TAP_CONTROL_CODE(4, METHOD_BUFFERED)
# define TAP_IOCTL_CONFIG_POINT_TO_POINT TAP_CONTROL_CODE(5, METHOD_BUFFERED)
# define TAP_IOCTL_SET_MEDIA_STATUS TAP_CONTROL_CODE(6, METHOD_BUFFERED)
# define TAP_IOCTL_CONFIG_DHCP_MASQ TAP_CONTROL_CODE(7, METHOD_BUFFERED)
# define TAP_IOCTL_GET_LOG_LINE TAP_CONTROL_CODE(8, METHOD_BUFFERED)
# define TAP_IOCTL_CONFIG_DHCP_SET_OPT TAP_CONTROL_CODE(9, METHOD_BUFFERED)
# define TAP_IOCTL_CONFIG_TUN TAP_CONTROL_CODE(10, METHOD_BUFFERED)
/* Windows registry crap */
# define MAX_KEY_LENGTH 255
# define MAX_VALUE_NAME 16383
# define NETWORK_ADAPTERS \
" SYSTEM \\ CurrentControlSet \\ Control \\ Class \\ {4D36E972-E325-11CE-BFC1- " \
" 08002BE10318} "
# include "platform.hpp"
typedef unsigned long IPADDR ;
namespace llarp : : vpn
namespace llarp : : win32
{
static char *
reg_query ( char * key_name )
{
HKEY adapters , adapter ;
DWORD i , ret , len ;
char * deviceid = nullptr ;
DWORD sub_keys = 0 ;
ret = RegOpenKeyEx ( HKEY_LOCAL_MACHINE , TEXT ( key_name ) , 0 , KEY_READ , & adapters ) ;
if ( ret ! = ERROR_SUCCESS )
{
return nullptr ;
}
ret = RegQueryInfoKey (
adapters , NULL , NULL , NULL , & sub_keys , NULL , NULL , NULL , NULL , NULL , NULL , NULL ) ;
if ( ret ! = ERROR_SUCCESS )
{
return nullptr ;
}
if ( sub_keys < = 0 )
{
return nullptr ;
}
/* Walk througt all adapters */
for ( i = 0 ; i < sub_keys ; i + + )
{
char new_key [ MAX_KEY_LENGTH ] ;
char data [ 256 ] ;
TCHAR key [ MAX_KEY_LENGTH ] ;
DWORD keylen = MAX_KEY_LENGTH ;
/* Get the adapter key name */
ret = RegEnumKeyEx ( adapters , i , key , & keylen , NULL , NULL , NULL , NULL ) ;
if ( ret ! = ERROR_SUCCESS )
{
continue ;
}
/* Append it to NETWORK_ADAPTERS and open it */
snprintf ( new_key , sizeof new_key , " %s \\ %s " , key_name , key ) ;
ret = RegOpenKeyEx ( HKEY_LOCAL_MACHINE , TEXT ( new_key ) , 0 , KEY_READ , & adapter ) ;
if ( ret ! = ERROR_SUCCESS )
{
continue ;
}
/* Check its values */
len = sizeof data ;
ret = RegQueryValueEx ( adapter , " ComponentId " , NULL , NULL , ( LPBYTE ) data , & len ) ;
if ( ret ! = ERROR_SUCCESS )
{
/* This value doesn't exist in this adaptater tree */
goto clean ;
}
/* If its a tap adapter, its all good */
if ( strncmp ( data , " tap0901 " , 7 ) = = 0 )
{
DWORD type ;
len = sizeof data ;
ret = RegQueryValueEx ( adapter , " NetCfgInstanceId " , NULL , & type , ( LPBYTE ) data , & len ) ;
if ( ret ! = ERROR_SUCCESS )
{
goto clean ;
}
deviceid = strdup ( data ) ;
break ;
}
clean :
RegCloseKey ( adapter ) ;
}
RegCloseKey ( adapters ) ;
return deviceid ;
}
template < typename Visit >
void
ForEachWIN32Interface ( Visit visit )
{
# define MALLOC(x) HeapAlloc(GetProcessHeap(), 0, (x))
# define FREE(x) HeapFree(GetProcessHeap(), 0, (x))
MIB_IPFORWARDTABLE * pIpForwardTable ;
DWORD dwSize = 0 ;
DWORD dwRetVal = 0 ;
pIpForwardTable = ( MIB_IPFORWARDTABLE * ) MALLOC ( sizeof ( MIB_IPFORWARDTABLE ) ) ;
if ( pIpForwardTable = = nullptr )
return ;
if ( GetIpForwardTable ( pIpForwardTable , & dwSize , 0 ) = = ERROR_INSUFFICIENT_BUFFER )
{
FREE ( pIpForwardTable ) ;
pIpForwardTable = ( MIB_IPFORWARDTABLE * ) MALLOC ( dwSize ) ;
if ( pIpForwardTable = = nullptr )
{
return ;
}
}
if ( ( dwRetVal = GetIpForwardTable ( pIpForwardTable , & dwSize , 0 ) ) = = NO_ERROR )
{
for ( int i = 0 ; i < ( int ) pIpForwardTable - > dwNumEntries ; i + + )
{
visit ( & pIpForwardTable - > table [ i ] ) ;
}
}
FREE ( pIpForwardTable ) ;
# undef MALLOC
# undef FREE
}
std : : optional < int >
GetInterfaceIndex ( huint32_t ip )
{
std : : optional < int > ret = std : : nullopt ;
ForEachWIN32Interface ( [ & ret , n = ToNet ( ip ) ] ( auto * iface ) {
if ( ret . has_value ( ) )
return ;
if ( iface - > dwForwardNextHop = = n . n )
{
ret = iface - > dwForwardIfIndex ;
}
} ) ;
return ret ;
}
namespace
{
std : : wstring
get_win_sys_path ( )
template < typename T >
std : : string
ip_to_string ( T ip )
{
wchar_t win_sys_path [ MAX_PATH ] = { 0 } ;
const wchar_t * default_sys_path = L " C: \\ Windows \\ system32 " ;
if ( ! GetSystemDirectoryW ( win_sys_path , _countof ( win_sys_path ) ) )
{
wcsncpy ( win_sys_path , default_sys_path , _countof ( win_sys_path ) ) ;
win_sys_path [ _countof ( win_sys_path ) - 1 ] = L ' \0 ' ;
}
return win_sys_path ;
return var : : visit ( [ ] ( auto & & ip ) { return ip . ToString ( ) ; } , ip ) ;
}
} // namespace
class Win32Interface final : public NetworkInterface
using namespace llarp : : vpn ;
class VPNPlatform : public Platform , public IRouteManager
{
std : : atomic < bool > m_Run ;
HANDLE m_Device , m_IOCP ;
std : : vector < std : : thread > m_Threads ;
thread : : Queue < net : : IPPacket > m_ReadQueue ;
InterfaceInfo m_Info ;
llarp : : Context * const _ctx ;
const int m_Metric { 2 } ;
AbstractRouter * const _router ;
static std : : string
NetSHCommand ( )
const auto &
Net ( ) const
{
std : : wstring wcmd = get_win_sys_path ( ) + L " \\ netsh.exe " ;
using convert_type = std : : codecvt_utf8 < wchar_t > ;
std : : wstring_convert < convert_type , wchar_t > converter ;
return converter . to_bytes ( wcmd ) ;
return _ctx - > router - > Net ( ) ;
}
static void
NetSH( std : : string commands )
void
Route ( std : : string ip , std : : string gw , std : : string cmd )
{
commands = NetSHCommand ( ) + " interface IPv6 " + commands ;
LogInfo ( " exec: " , commands ) ;
: : system ( commands . c_str ( ) ) ;
llarp : : win32 : : Exec (
" route.exe " ,
fmt : : format ( " {} {} MASK 255.255.255.255 {} METRIC {} " , cmd , ip , gw , m_Metric ) ) ;
}
public :
static std : : string
RouteCommand ( )
void
DefaultRouteViaInterface ( NetworkInterface & vpn , std : : string cmd )
{
std : : wstring wcmd = get_win_sys_path ( ) + L " \\ route.exe " ;
using convert_type = std : : codecvt_utf8 < wchar_t > ;
std : : wstring_convert < convert_type , wchar_t > converter ;
return converter . to_bytes ( wcmd ) ;
// route hole for loopback bacause god is dead on windows
llarp : : win32 : : Exec (
" route.exe " , fmt : : format ( " {} 127.0.0.0 MASK 255.0.0.0 0.0.0.0 METRIC {} " , cmd , m_Metric ) ) ;
// set up ipv4 routes
auto lower = RouteViaInterface ( vpn , " 0.0.0.0 " , " 128.0.0.0 " , cmd ) ;
auto upper = RouteViaInterface ( vpn , " 128.0.0.0 " , " 128.0.0.0 " , cmd ) ;
}
Win32Interface( InterfaceInfo info , AbstractRouter * router )
: m_ReadQueue { 1024 } , m_Info { std : : move ( info ) } , _router { router }
OneShotExec
RouteViaInterface ( NetworkInterface & vpn , std : : string addr , std : : string mask , std : : string cmd )
{
DWORD len ;
const auto device_id = reg_query ( NETWORK_ADAPTERS ) ;
if ( device_id = = nullptr )
{
LogError ( " cannot query registry " ) ;
throw std : : invalid_argument { " cannot query registery " } ;
}
const auto fname = fmt : : format ( R " ( \\ . \ Global \ {}.tap) " , device_id ) ;
m_Device = CreateFile (
fname . c_str ( ) ,
GENERIC_WRITE | GENERIC_READ ,
FILE_SHARE_READ | FILE_SHARE_WRITE ,
0 ,
OPEN_EXISTING ,
FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED ,
0 ) ;
if ( m_Device = = INVALID_HANDLE_VALUE )
const auto & info = vpn . Info ( ) ;
auto index = info . index ;
if ( index = = 0 )
{
LogError ( " failed to open device " ) ;
throw std : : invalid_argument { " cannot open " + fname } ;
if ( auto maybe_idx = net : : Platform : : Default_ptr ( ) - > GetInterfaceIndex ( info [ 0 ] ) )
index = * maybe_idx ;
}
LogInfo ( " putting interface up... " ) ;
ULONG flag = 1 ;
// put the interface up
if ( not DeviceIoControl (
m_Device ,
TAP_IOCTL_SET_MEDIA_STATUS ,
& flag ,
sizeof ( flag ) ,
& flag ,
sizeof ( flag ) ,
& len ,
nullptr ) )
auto ifaddr = ip_to_string ( info [ 0 ] ) ;
// this changes the last 1 to a 0 so that it routes over the interface
// this is required because windows is idiotic af
ifaddr . back ( ) - - ;
if ( index )
{
LogError ( " cannot up interface up " ) ;
throw std : : invalid_argument { " cannot put interface up " } ;
return OneShotExec {
" route.exe " ,
fmt : : format (
" {} {} MASK {} {} IF {} METRIC {} " , cmd , addr , mask , ifaddr , info . index , m_Metric ) } ;
}
LogInfo ( " setting addresses " ) ;
huint32_t ip { } ;
// set ipv4 addresses
for ( const auto & ifaddr : m_Info . addrs )
{
if ( ifaddr . fam = = AF_INET )
{
IPADDR sock [ 3 ] { } ;
const nuint32_t addr = xhtonl ( net : : TruncateV6 ( ifaddr . range . addr ) ) ;
ip = net : : TruncateV6 ( ifaddr . range . addr ) ;
m_Info . ifname = ip . ToString ( ) ;
const nuint32_t mask = xhtonl ( net : : TruncateV6 ( ifaddr . range . netmask_bits ) ) ;
LogInfo ( " address " , addr , " netmask " , mask ) ;
sock [ 0 ] = addr . n ;
sock [ 1 ] = addr . n & mask . n ;
sock [ 2 ] = mask . n ;
if ( not DeviceIoControl (
m_Device ,
TAP_IOCTL_CONFIG_TUN ,
& sock ,
sizeof ( sock ) ,
& sock ,
sizeof ( sock ) ,
& len ,
nullptr ) )
{
LogError ( " cannot set address " ) ;
throw std : : invalid_argument { " cannot configure tun interface address " } ;
}
IPADDR ep [ 4 ] { } ;
ep [ 0 ] = addr . n ;
ep [ 1 ] = mask . n ;
ep [ 2 ] = ( addr . n | ~ mask . n ) - htonl ( 1 ) ;
ep [ 3 ] = 31536000 ;
if ( not DeviceIoControl (
m_Device ,
TAP_IOCTL_CONFIG_DHCP_MASQ ,
ep ,
sizeof ( ep ) ,
ep ,
sizeof ( ep ) ,
& len ,
nullptr ) )
{
LogError ( " cannot set dhcp masq " ) ;
throw std : : invalid_argument { " Cannot configure tun interface dhcp " } ;
}
# pragma pack(push)
# pragma pack(1)
struct opt
{
uint8_t dhcp_opt ;
uint8_t length ;
uint32_t value ;
} dns , gateway ;
# pragma pack(pop)
const nuint32_t dnsaddr { xhtonl ( m_Info . dnsaddr ) } ;
dns . dhcp_opt = 6 ;
dns . length = 4 ;
dns . value = dnsaddr . n ;
gateway . dhcp_opt = 3 ;
gateway . length = 4 ;
gateway . value = addr . n + htonl ( 1 ) ;
if ( not DeviceIoControl (
m_Device ,
TAP_IOCTL_CONFIG_DHCP_SET_OPT ,
& gateway ,
sizeof ( gateway ) ,
& gateway ,
sizeof ( gateway ) ,
& len ,
nullptr ) )
{
LogError ( " cannot set gateway " ) ;
throw std : : invalid_argument { " cannot set tun gateway " } ;
}
if ( not DeviceIoControl (
m_Device ,
TAP_IOCTL_CONFIG_DHCP_SET_OPT ,
& dns ,
sizeof ( dns ) ,
& dns ,
sizeof ( dns ) ,
& len ,
nullptr ) )
{
LogError ( " cannot set dns " ) ;
throw std : : invalid_argument { " cannot set tun dns " } ;
}
}
}
// set ipv6 addresses
for ( const auto & ifaddr : m_Info . addrs )
else
{
if ( ifaddr . fam = = AF_INET6 )
{
const auto maybe = GetInterfaceIndex ( ip ) ;
if ( maybe . has_value ( ) )
{
NetSH (
" add address interface= " + std : : to_string ( * maybe ) + " " + ifaddr . range . ToString ( ) ) ;
}
}
return OneShotExec {
" route.exe " ,
fmt : : format ( " {} {} MASK {} {} METRIC {} " , cmd , addr , mask , ifaddr , m_Metric ) } ;
}
}
~ Win32Interface ( )
{
ULONG flag = 0 ;
DWORD len ;
// put the interface down
DeviceIoControl (
m_Device ,
TAP_IOCTL_SET_MEDIA_STATUS ,
& flag ,
sizeof ( flag ) ,
& flag ,
sizeof ( flag ) ,
& len ,
nullptr ) ;
m_Run = false ;
CloseHandle ( m_IOCP ) ;
// close the handle
CloseHandle ( m_Device ) ;
// close the reader threads
for ( auto & thread : m_Threads )
thread . join ( ) ;
}
virtual void
MaybeWakeUpperLayers ( ) const override
{
_router - > TriggerPump ( ) ;
}
int
PollFD ( ) const override
{
return - 1 ;
}
std : : string
IfName ( ) const override
{
return m_Info . ifname ;
}
void
Start ( )
{
m_Run = true ;
const auto numThreads = std : : thread : : hardware_concurrency ( ) ;
// allocate packets
for ( size_t idx = 0 ; idx < numThreads ; + + idx )
m_Packets . emplace_back ( new asio_evt_pkt { true } ) ;
// create completion port
m_IOCP = CreateIoCompletionPort ( INVALID_HANDLE_VALUE , nullptr , 0 , 0 ) ;
// attach the handle or some shit
CreateIoCompletionPort ( m_Device , m_IOCP , 0 , 0 ) ;
// spawn reader threads
for ( size_t idx = 0 ; idx < numThreads ; + + idx )
m_Threads . emplace_back ( [ this , idx ] ( ) { ReadLoop ( idx ) ; } ) ;
}
net : : IPPacket
ReadNextPacket ( ) override
{
if ( m_ReadQueue . empty ( ) )
return net : : IPPacket { } ;
return m_ReadQueue . popFront ( ) ;
}
struct asio_evt_pkt
{
explicit asio_evt_pkt ( bool _read ) : read { _read }
{ }
std : : shared_ptr < WintunContext > _wintun ;
OVERLAPPED hdr = { 0 , 0 , 0 , 0 , nullptr } ; // must be first, since this is part of the IO call
bool read ;
net : : IPPacket pkt ;
WinDivert_API m_WinDivert { } ;
void
Read ( HANDLE dev )
{
ReadFile ( dev , pkt . buf , sizeof ( pkt . buf ) , nullptr , & hdr ) ;
}
} ;
public :
VPNPlatform ( const VPNPlatform & ) = delete ;
VPNPlatform ( VPNPlatform & & ) = delete ;
std : : vector < std : : unique_ptr < asio_evt_pkt > > m_Packets ;
VPNPlatform ( llarp : : Context * ctx ) : Platform { } , _ctx { ctx } , _wintun { WintunContext_new ( ) }
{ }
bool
WritePacket ( net : : IPPacket pkt )
{
LogDebug ( " write packet " , pkt . sz ) ;
asio_evt_pkt * ev = new asio_evt_pkt { false } ;
std : : copy_n ( pkt . buf , pkt . sz , ev - > pkt . buf ) ;
ev - > pkt . sz = pkt . sz ;
WriteFile ( m_Device , ev - > pkt . buf , ev - > pkt . sz , nullptr , & ev - > hdr ) ;
return true ;
}
virtual ~ VPNPlatform ( ) = default ;
void
ReadLoop( size_t packetIndex )
AddRoute ( net : : ipaddr_t ip , net : : ipaddr_t gateway ) override
{
auto & ev = m_Packets [ packetIndex ] ;
ev - > Read ( m_Device ) ;
while ( m_Run )
{
DWORD size ;
ULONG_PTR user ;
OVERLAPPED * ovl = nullptr ;
if ( not GetQueuedCompletionStatus ( m_IOCP , & size , & user , & ovl , 1000 ) )
continue ;
asio_evt_pkt * pkt = ( asio_evt_pkt * ) ovl ;
LogDebug ( " got iocp event size= " , size , " read= " , pkt - > read ) ;
if ( pkt - > read )
{
pkt - > pkt . sz = size ;
m_ReadQueue . pushBack ( pkt - > pkt ) ;
pkt - > Read ( m_Device ) ;
}
else
delete pkt ;
}
Route ( ip_to_string ( ip ) , ip_to_string ( gateway ) , " ADD " ) ;
}
} ;
class Win32RouteManager : public IRouteManager
{
void
Execute( std : : string cmd ) const
DelRoute ( net : : ipaddr_t ip , net : : ipaddr_t gateway ) override
{
llarp : : LogInfo ( " exec: " , cmd ) ;
: : system ( cmd . c_str ( ) ) ;
}
static std : : string
PowerShell ( )
{
std : : wstring wcmd =
get_win_sys_path ( ) + L " \\ WindowsPowerShell \\ v1.0 \\ powershell.exe -Command " ;
using convert_type = std : : codecvt_utf8 < wchar_t > ;
std : : wstring_convert < convert_type , wchar_t > converter ;
return converter . to_bytes ( wcmd ) ;
}
static std : : string
RouteCommand ( )
{
return Win32Interface : : RouteCommand ( ) ;
Route ( ip_to_string ( ip ) , ip_to_string ( gateway ) , " DELETE " ) ;
}
void
Route( IPVariant_t ip , IPVariant_t gateway , std : : string cmd )
AddRouteViaInterface ( NetworkInterface & vpn , IPRange range ) override
{
Execute ( fmt : : format (
" {} {} {} MASK 255.255.255.255 {} METRIC 2 " , RouteCommand ( ) , cmd , ip , gateway ) ) ;
RouteViaInterface ( vpn , range . BaseAddressString ( ) , range . NetmaskString ( ) , " ADD " ) ;
}
void
De faultRouteViaInterface( std : : string ifname , std : : string cmd )
DelRouteViaInterface ( NetworkInterface & vpn , IPRange range ) override
{
// poke hole for loopback bacause god is dead on windows
Execute ( RouteCommand ( ) + " " + cmd + " 127.0.0.0 MASK 255.0.0.0 0.0.0.0 " ) ;
huint32_t ip { } ;
ip . FromString ( ifname ) ;
const auto ipv6 = net : : ExpandV4Lan ( ip ) ;
Execute ( RouteCommand ( ) + " " + cmd + " ::/2 " + ipv6 . ToString ( ) ) ;
Execute ( RouteCommand ( ) + " " + cmd + " 4000::/2 " + ipv6 . ToString ( ) ) ;
Execute ( RouteCommand ( ) + " " + cmd + " 8000::/2 " + ipv6 . ToString ( ) ) ;
Execute ( RouteCommand ( ) + " " + cmd + " c000::/2 " + ipv6 . ToString ( ) ) ;
ifname . back ( ) + + ;
Execute ( RouteCommand ( ) + " " + cmd + " 0.0.0.0 MASK 128.0.0.0 " + ifname + " METRIC 2 " ) ;
Execute ( RouteCommand ( ) + " " + cmd + " 128.0.0.0 MASK 128.0.0.0 " + ifname + " METRIC 2 " ) ;
RouteViaInterface ( vpn , range . BaseAddressString ( ) , range . NetmaskString ( ) , " DELETE " ) ;
}
void
RouteViaInterface( std : : string ifname , IPRange range , std : : string cmd )
std : : vector < net : : ipaddr_t >
GetGatewaysNotOnInterface ( NetworkInterface & vpn ) override
{
if ( range . IsV4 ( ) )
{
const huint32_t addr4 = net : : TruncateV6 ( range . addr ) ;
const huint32_t mask4 = net : : TruncateV6 ( range . netmask_bits ) ;
Execute (
RouteCommand ( ) + " " + cmd + " " + addr4 . ToString ( ) + " MASK " + mask4 . ToString ( ) + " "
+ ifname ) ;
}
else
std : : vector < net : : ipaddr_t > gateways ;
auto idx = vpn . Info ( ) . index ;
using UInt_t = decltype ( idx ) ;
for ( const auto & iface : Net ( ) . AllNetworkInterfaces ( ) )
{
Execute (
RouteCommand ( ) + " " + cmd + range . addr . ToString ( ) + " MASK "
+ range . netmask_bits . ToString ( ) + " " + ifname ) ;
if ( static_cast < UInt_t > ( iface . index ) = = idx )
continue ;
if ( iface . gateway )
gateways . emplace_back ( * iface . gateway ) ;
}
}
public :
void
AddRoute ( IPVariant_t ip , IPVariant_t gateway ) override
{
Route ( ip , gateway , " ADD " ) ;
return gateways ;
}
void
DelRoute( IPVariant_t ip , IPVariant_t gateway ) override
AddDefaultRouteViaInterface ( NetworkInterface & vpn ) override
{
Route ( ip , gateway , " DELETE " ) ;
}
// kill ipv6
llarp : : win32 : : Exec (
" WindowsPowerShell \\ v1.0 \\ powershell.exe " ,
" -Command (Disable-NetAdapterBinding -Name \" * \" -ComponentID ms_tcpip6) " ) ;
void
AddRouteViaInterface ( NetworkInterface & vpn , IPRange range ) override
{
RouteViaInterface ( vpn . IfName ( ) , range , " ADD " ) ;
DefaultRouteViaInterface ( vpn , " ADD " ) ;
llarp : : win32 : : Exec ( " ipconfig.exe " , " /flushdns " ) ;
}
void
Del RouteViaInterface( NetworkInterface & vpn , IPRange range ) override
DelDefaultRouteViaInterface ( NetworkInterface & vpn ) override
{
RouteViaInterface ( vpn . IfName ( ) , range , " DELETE " ) ;
}
// restore ipv6
llarp : : win32 : : Exec (
" WindowsPowerShell \\ v1.0 \\ powershell.exe " ,
" -Command (Enable-NetAdapterBinding -Name \" * \" -ComponentID ms_tcpip6) " ) ;
std : : vector < IPVariant_t >
GetGatewaysNotOnInterface ( std : : string ifname ) override
{
std : : vector < IPVariant_t > gateways ;
ForEachWIN32Interface ( [ & ] ( auto w32interface ) {
struct in_addr gateway , interface_addr ;
gateway . S_un . S_addr = ( u_long ) w32interface - > dwForwardDest ;
interface_addr . S_un . S_addr = ( u_long ) w32interface - > dwForwardNextHop ;
std : : string interface_name { inet_ntoa ( interface_addr ) } ;
if ( ( ! gateway . S_un . S_addr ) and interface_name ! = ifname )
{
llarp : : LogTrace (
" Win32 find gateway: Adding gateway ( " , interface_name , " ) to list of gateways. " ) ;
huint32_t x { } ;
if ( x . FromString ( interface_name ) )
gateways . push_back ( x ) ;
}
} ) ;
return gateways ;
DefaultRouteViaInterface ( vpn , " DELETE " ) ;
llarp : : win32 : : Exec ( " netsh.exe " , " winsock reset " ) ;
llarp : : win32 : : Exec ( " ipconfig.exe " , " /flushdns " ) ;
}
void
AddDefaultRouteViaInterface( std : : string ifname ) override
std : : shared_ptr < NetworkInterface >
ObtainInterface ( InterfaceInfo info , AbstractRouter * router ) override
{
// kill ipv6
Execute ( PowerShell ( ) + R " (Disable-NetAdapterBinding -Name " * " -ComponentID ms_tcpip6) " ) ;
DefaultRouteViaInterface ( ifname , " ADD " ) ;
return WintunInterface_new ( _wintun , std : : move ( info ) , router ) ;
}
void
DelDefaultRouteViaInterface( std : : string ifname ) override
std : : shared_ptr < I_Packet_IO >
create_packet_io ( unsigned int ifindex ) override
{
// restore ipv6
Execute ( PowerShell ( ) + R " (Enable-NetAdapterBinding -Name " * " -ComponentID ms_tcpip6) " ) ;
DefaultRouteViaInterface ( ifname , " DELETE " ) ;
// we only want do this on all interfaes with windivert
if ( ifindex )
throw std : : invalid_argument {
" cannot create packet io on explicitly specified interface, not currently supported on "
" windows (yet) " } ;
return m_WinDivert . make_intercepter (
" outbound and ( udp.DstPort == 53 or tcp.DstPort == 53 ) " ,
[ router = _ctx - > router ] { router - > TriggerPump ( ) ; } ) ;
}
} ;
class Win32Platform : public Platform
{
Win32RouteManager _routeManager { } ;
public :
std : : shared_ptr < NetworkInterface >
ObtainInterface ( InterfaceInfo info , AbstractRouter * router ) override
{
auto netif = std : : make_shared < Win32Interface > ( std : : move ( info ) , router ) ;
netif - > Start ( ) ;
return netif ;
} ;
IRouteManager &
RouteManager ( ) override
{
return _routeManager ;
return * this ;
}
} ;
} // namespace llarp:: vpn
} // namespace llarp::win32
Jeff
2 years ago
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