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SoftEtherVPN/src/Cedar/Proto_Win7.c

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2017-10-19 05:48:23 +03:00
// SoftEther VPN Source Code - Developer Edition Master Branch
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// Cedar Communication Module
// Proto_Win7.c
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// Initialize the helper module for Windows 7 / Windows 8 / Windows Vista / Windows Server 2008 / Windows Server 2008 R2 / Windows Server 2012 / Windows 10
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#ifdef OS_WIN32
#include "Proto_Win7.h"
#include "Mayaqua/Cfg.h"
#include "Mayaqua/FileIO.h"
#include "Mayaqua/Internat.h"
#include "Mayaqua/Memory.h"
#include "Mayaqua/Microsoft.h"
#include "Mayaqua/Str.h"
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#include <Wfp/Wfp.h>
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#include <stdlib.h>
#include <fwpmu.h>
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static IPSEC_WIN7_FUNCTIONS *api = NULL;
static HINSTANCE hDll = NULL;
// Initialize the IPsec helper module for Windows 7
IPSEC_WIN7 *IPsecWin7Init()
{
IPSEC_WIN7 *w;
FWPM_SESSION0 session;
UINT ret;
FWPM_FILTER0 filter;
UINT64 weight = MAXUINT64;
Debug("IPsecWin7Init()\n");
if (MsIsAdmin() == false)
{
return NULL;
}
if (IPsecWin7InitApi() == false)
{
return NULL;
}
// Driver Initialization
if (IPsecWin7InitDriver() == false)
{
return NULL;
}
// Open the WFP (Dynamic Session)
Zero(&session, sizeof(session));
session.flags = FWPM_SESSION_FLAG_DYNAMIC;
w = ZeroMalloc(sizeof(IPSEC_WIN7));
ret = api->FwpmEngineOpen0(NULL, RPC_C_AUTHN_DEFAULT, NULL, &session, &w->hEngine);
if (ret)
{
Debug("FwpmEngineOpen0 Failed.\n");
IPsecWin7Free(w);
return NULL;
}
// Create the Filter (IPv4)
Zero(&filter, sizeof(filter));
filter.flags = FWPM_FILTER_FLAG_PERMIT_IF_CALLOUT_UNREGISTERED;
filter.layerKey = FWPM_LAYER_INBOUND_IPPACKET_V4;
filter.weight.type = FWP_UINT64;
filter.weight.uint64 = &weight;
filter.action.type = FWP_ACTION_CALLOUT_UNKNOWN;
filter.action.calloutKey = GUID_WFP_CALLOUT_DRIVER_V4;
filter.displayData.name = IPSEC_WIN7_FILTER_TITLE_V4;
ret = api->FwpmFilterAdd0(w->hEngine, &filter, NULL, &w->FilterIPv4Id);
if (ret)
{
Debug("FwpmFilterAdd0 for IPv4 Failed: 0x%X\n", ret);
}
else
{
Debug("FwpmFilterAdd0 for IPv4 Ok.\n");
}
// Create the Filter (IPv6)
Zero(&filter, sizeof(filter));
filter.flags = FWPM_FILTER_FLAG_PERMIT_IF_CALLOUT_UNREGISTERED;
filter.layerKey = FWPM_LAYER_INBOUND_IPPACKET_V6;
filter.weight.type = FWP_UINT64;
filter.weight.uint64 = &weight;
filter.action.type = FWP_ACTION_CALLOUT_UNKNOWN;
filter.action.calloutKey = GUID_WFP_CALLOUT_DRIVER_V6;
filter.displayData.name = IPSEC_WIN7_FILTER_TITLE_V6;
ret = api->FwpmFilterAdd0(w->hEngine, &filter, NULL, &w->FilterIPv6Id);
if (ret)
{
Debug("FwpmFilterAdd0 for IPv6 Failed: 0x%X\n", ret);
}
else
{
Debug("FwpmFilterAdd0 for IPv6 Ok.\n");
}
// Open the device of the driver as a file
w->hDriverFile = CreateFileA(WFP_DEVICE_FILE_NAME, GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
if (w->hDriverFile == NULL || w->hDriverFile == INVALID_HANDLE_VALUE)
{
Debug("CreateFileA(\"%s\") Failed.\n", WFP_DEVICE_FILE_NAME);
IPsecWin7Free(w);
return NULL;
}
IPsecWin7UpdateHostIPAddressList(w);
Debug("IPsecWin7Init() Ok.\n");
return w;
}
// Update the IP address list of the host
void IPsecWin7UpdateHostIPAddressList(IPSEC_WIN7 *w)
{
LIST *o;
UINT i;
BUF *buf;
UINT retsize;
// Validate arguments
if (w == NULL)
{
return;
}
o = GetHostIPAddressList();
if (o == NULL)
{
return;
}
buf = NewBuf();
for (i = 0;i < LIST_NUM(o);i++)
{
IP *ip = LIST_DATA(o, i);
WFP_LOCAL_IP a;
Zero(&a, sizeof(a));
// Exclude any IPs or localhost IP
if (IsZeroIP(ip) == false && IsLocalHostIP(ip) == false)
{
if (IsIP4(ip))
{
a.IpVersion = 4;
Copy(a.IpAddress.IPv4Address, ip->addr, 4);
}
else
{
a.IpVersion = 6;
Copy(a.IpAddress.IPv6Address, ip->ipv6_addr, 16);
}
WriteBuf(buf, &a, sizeof(WFP_LOCAL_IP));
}
}
if (WriteFile(w->hDriverFile, buf->Buf, buf->Size, &retsize, NULL) == false)
{
Debug("WriteFile to the driver failed. %u\n", GetLastError());
}
FreeHostIPAddressList(o);
FreeBuf(buf);
}
// Release the module
void IPsecWin7Free(IPSEC_WIN7 *w)
{
// Validate arguments
if (w == NULL)
{
return;
}
if (w->hEngine != NULL)
{
api->FwpmEngineClose0(w->hEngine);
}
if (w->hDriverFile != NULL && w->hDriverFile != INVALID_HANDLE_VALUE)
{
CloseHandle(w->hDriverFile);
}
Free(w);
}
// Initialize and start the driver
bool IPsecWin7InitDriver()
{
bool ret;
void *lock = MsInitGlobalLock("IPsecWin7InitDriver", false);
void *p = MsDisableWow64FileSystemRedirection();
MsGlobalLock(lock);
{
ret = IPsecWin7InitDriverInner();
}
MsGlobalUnlock(lock);
MsFreeGlobalLock(lock);
MsRestoreWow64FileSystemRedirection(p);
Debug("IPsecWin7InitDriver: %u\n", ret);
return ret;
}
bool IPsecWin7InitDriverInner()
{
char sys_filename[MAX_PATH];
bool install_driver = true;
HANDLE hEngine;
UINT ret;
FWPM_SESSION0 session;
UINT id;
FWPM_CALLOUT0 callout;
Format(sys_filename, sizeof(sys_filename), IPSEC_WIN7_DST_SYS, MsGetSystem32Dir());
if (IsFileExists(sys_filename) && MsIsServiceInstalled(IPSEC_WIN7_DRIVER_NAME))
{
if (GetCurrentIPsecWin7DriverBuild() >= CEDAR_VERSION_BUILD)
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{
// Not to install since the latest version has been already installed
install_driver = false;
}
}
if (install_driver)
{
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char src_filename[MAX_PATH];
if (MsIsWindows10() == false)
{
Format(src_filename, sizeof(src_filename),
"|DriverPackages\\Wfp\\%s\\pxwfp_%s.sys",
(MsIsX64() ? "x64" : "x86"), (MsIsX64() ? "x64" : "x86"));
}
else
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{
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Format(src_filename, sizeof(src_filename),
"|DriverPackages\\Wfp_Win10\\%s\\pxwfp_%s.sys",
(MsIsX64() ? "x64" : "x86"), (MsIsX64() ? "x64" : "x86"));
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}
// Copy the driver
if (FileCopy(src_filename, sys_filename) == false)
{
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Debug("%s copy failed. %u\n", sys_filename, GetLastError());
if (IsFileExists(sys_filename) == false)
{
Debug("%s failed. Abort.\n", sys_filename);
return false;
}
}
else
{
Debug("%s copied.\n", sys_filename);
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}
// Set the build number
SetCurrentIPsecWin7DriverBuild();
}
// Get whether the device drivers is already installed
if (MsIsServiceInstalled(IPSEC_WIN7_DRIVER_NAME) == false)
{
wchar_t sys_filename_w[MAX_PATH];
StrToUni(sys_filename_w, sizeof(sys_filename_w), sys_filename);
// Run a new installation
if (MsInstallDeviceDriverW(IPSEC_WIN7_DRIVER_NAME, IPSEC_WIN7_DRIVER_TITLE,
sys_filename_w, NULL) == false)
{
// Installation failed
Debug("MsInstallDeviceDriverW failed.\n");
return false;
}
}
// Start if the device driver is stopped
if (MsIsServiceRunning(IPSEC_WIN7_DRIVER_NAME) == false)
{
if (MsStartService(IPSEC_WIN7_DRIVER_NAME) == false)
{
// Start failure
Debug("MsStartService failed.\n");
return false;
}
Debug("%s service started.\n", IPSEC_WIN7_DRIVER_NAME);
}
else
{
Debug("%s service was already started.\n", IPSEC_WIN7_DRIVER_NAME);
}
// Open the WFP
Zero(&session, sizeof(session));
ret = api->FwpmEngineOpen0(NULL, RPC_C_AUTHN_DEFAULT, NULL, &session, &hEngine);
if (ret)
{
Debug("FwpmEngineOpen0 failed.\n");
return false;
}
// Create the Callout Driver (IPv4)
Zero(&callout, sizeof(callout));
callout.calloutKey = GUID_WFP_CALLOUT_DRIVER_V4;
callout.applicableLayer = FWPM_LAYER_INBOUND_IPPACKET_V4;
callout.displayData.name = IPSEC_WIN7_DRIVER_TITLE_V4;
ret = api->FwpmCalloutAdd0(hEngine, &callout, NULL, &id);
if (ret)
{
Debug("FwpmCalloutAdd0 for IPv4 Failed: 0x%X\n", ret);
}
else
{
Debug("FwpmCalloutAdd0 for IPv4 Ok.\n");
}
// Create the Callout Driver (IPv6)
Zero(&callout, sizeof(callout));
callout.calloutKey = GUID_WFP_CALLOUT_DRIVER_V6;
callout.applicableLayer = FWPM_LAYER_INBOUND_IPPACKET_V6;
callout.displayData.name = IPSEC_WIN7_DRIVER_TITLE_V6;
ret = api->FwpmCalloutAdd0(hEngine, &callout, NULL, &id);
if (ret)
{
Debug("FwpmCalloutAdd0 for IPv6 Failed: 0x%X\n", ret);
}
else
{
Debug("FwpmCalloutAdd0 for IPv6 Ok.\n");
}
api->FwpmEngineClose0(hEngine);
return true;
}
// Write the build number of the current driver
void SetCurrentIPsecWin7DriverBuild()
{
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MsRegWriteInt(REG_LOCAL_MACHINE, IPSEC_WIN7_DRIVER_REGKEY,
(MsIsWindows10() ? IPSEC_WIN7_DRIVER_BUILDNUMBER_WIN10 : IPSEC_WIN7_DRIVER_BUILDNUMBER),
CEDAR_VERSION_BUILD);
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}
// Get the build number of the current driver
UINT GetCurrentIPsecWin7DriverBuild()
{
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return MsRegReadInt(REG_LOCAL_MACHINE, IPSEC_WIN7_DRIVER_REGKEY,
(MsIsWindows10() ? IPSEC_WIN7_DRIVER_BUILDNUMBER_WIN10 : IPSEC_WIN7_DRIVER_BUILDNUMBER));
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}
// Initialization of the API
bool IPsecWin7InitApi()
{
if (api != NULL)
{
return true;
}
if (hDll == NULL)
{
hDll = LoadLibraryA("FWPUCLNT.DLL");
}
if (hDll == NULL)
{
return false;
}
api = malloc(sizeof(IPSEC_WIN7_FUNCTIONS));
Zero(api, sizeof(IPSEC_WIN7_FUNCTIONS));
api->FwpmEngineOpen0 =
(DWORD (__stdcall *)(const wchar_t *,UINT32,SEC_WINNT_AUTH_IDENTITY_W *,const FWPM_SESSION0 *,HANDLE *))
GetProcAddress(hDll, "FwpmEngineOpen0");
api->FwpmEngineClose0 =
(DWORD (__stdcall *)(HANDLE))
GetProcAddress(hDll, "FwpmEngineClose0");
api->FwpmFreeMemory0 =
(void (__stdcall *)(void **))
GetProcAddress(hDll, "FwpmFreeMemory0");
api->FwpmFilterAdd0 =
(DWORD (__stdcall *)(HANDLE,const FWPM_FILTER0 *,PSECURITY_DESCRIPTOR,UINT64 *))
GetProcAddress(hDll, "FwpmFilterAdd0");
api->IPsecSaContextCreate0 =
(DWORD (__stdcall *)(HANDLE,const IPSEC_TRAFFIC0 *,UINT64 *,UINT64 *))
GetProcAddress(hDll, "IPsecSaContextCreate0");
api->IPsecSaContextGetSpi0 =
(DWORD (__stdcall *)(HANDLE,UINT64,const IPSEC_GETSPI0 *,IPSEC_SA_SPI *))
GetProcAddress(hDll, "IPsecSaContextGetSpi0");
api->IPsecSaContextAddInbound0 =
(DWORD (__stdcall *)(HANDLE,UINT64,const IPSEC_SA_BUNDLE0 *))
GetProcAddress(hDll, "IPsecSaContextAddInbound0");
api->IPsecSaContextAddOutbound0 =
(DWORD (__stdcall *)(HANDLE,UINT64,const IPSEC_SA_BUNDLE0 *))
GetProcAddress(hDll, "IPsecSaContextAddOutbound0");
api->FwpmCalloutAdd0 =
(DWORD (__stdcall *)(HANDLE,const FWPM_CALLOUT0 *,PSECURITY_DESCRIPTOR,UINT32 *))
GetProcAddress(hDll, "FwpmCalloutAdd0");
if (api->FwpmEngineOpen0 == NULL ||
api->FwpmEngineClose0 == NULL ||
api->FwpmFreeMemory0 == NULL ||
api->FwpmFilterAdd0 == NULL ||
api->IPsecSaContextCreate0 == NULL ||
api->IPsecSaContextGetSpi0 == NULL ||
api->IPsecSaContextAddInbound0 == NULL ||
api->IPsecSaContextAddOutbound0 == NULL ||
api->FwpmCalloutAdd0 == NULL)
{
free(api);
api = NULL;
return false;
}
return true;
}
#endif // WIN32