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Diffstat (limited to 'src/win32/tunDevice.cpp')
-rw-r--r--src/win32/tunDevice.cpp95
1 files changed, 53 insertions, 42 deletions
diff --git a/src/win32/tunDevice.cpp b/src/win32/tunDevice.cpp
index 6e6c83d..810e094 100644
--- a/src/win32/tunDevice.cpp
+++ b/src/win32/tunDevice.cpp
@@ -11,7 +11,7 @@
* tunneling and relaying of packets of any protocol.
*
*
- * Copyright (C) 2007-2009 Othmar Gsenger, Erwin Nindl,
+ * Copyright (C) 2007-2009 Othmar Gsenger, Erwin Nindl,
* Christian Pointner <satp@wirdorange.org>
*
* This file is part of Anytun.
@@ -49,19 +49,22 @@
TunDevice::TunDevice(std::string dev_name, std::string dev_type, std::string ifcfg_addr, u_int16_t ifcfg_prefix) : conf_(dev_name, dev_type, ifcfg_addr, ifcfg_prefix, 1400)
{
- if(conf_.type_ != TYPE_TUN && conf_.type_ != TYPE_TAP)
+ if(conf_.type_ != TYPE_TUN && conf_.type_ != TYPE_TAP) {
AnytunError::throwErr() << "unable to recognize type of device (tun or tap)";
+ }
handle_ = INVALID_HANDLE_VALUE;
- if(!getAdapter(dev_name))
+ if(!getAdapter(dev_name)) {
AnytunError::throwErr() << "can't find any suitable device";
+ }
if(handle_ == INVALID_HANDLE_VALUE) {
std::stringstream tapname;
- tapname << USERMODEDEVICEDIR << actual_node_ << TAPSUFFIX;
+ tapname << USERMODEDEVICEDIR << actual_node_ << TAPSUFFIX;
handle_ = CreateFileA(tapname.str().c_str(), GENERIC_WRITE | GENERIC_READ, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, 0);
- if(handle_ == INVALID_HANDLE_VALUE)
+ if(handle_ == INVALID_HANDLE_VALUE) {
AnytunError::throwErr() << "Unable to open device: " << actual_node_ << " (" << actual_name_ << "): " << AnytunErrno(GetLastError());
+ }
}
DWORD err;
@@ -90,15 +93,16 @@ TunDevice::TunDevice(std::string dev_name, std::string dev_type, std::string ifc
}
}
- if(ifcfg_addr != "")
+ if(ifcfg_addr != "") {
do_ifconfig();
+ }
int status = true;
err = performIoControl(TAP_IOCTL_SET_MEDIA_STATUS, &status, sizeof(status), &status, sizeof(status));
if(err != ERROR_SUCCESS) {
CloseHandle(handle_);
AnytunError::throwErr() << "Unable to set device media status: " << AnytunErrno(err);
- }
+ }
roverlapped_.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
woverlapped_.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
@@ -108,45 +112,50 @@ bool TunDevice::getAdapter(std::string const& dev_name)
{
RegistryKey akey;
DWORD err = akey.open(HKEY_LOCAL_MACHINE, ADAPTER_KEY, KEY_ENUMERATE_SUB_KEYS);
- if(err != ERROR_SUCCESS)
+ if(err != ERROR_SUCCESS) {
AnytunError::throwErr() << "Unable to open registry key (HKLM\\" << ADAPTER_KEY << "): " << AnytunErrno(err);
-
+ }
+
bool found = false;
for(int i=0; ; ++i) {
RegistryKey ckey;
DWORD err = akey.getSubKey(i, ckey, KEY_QUERY_VALUE);
- if(err == ERROR_NO_MORE_ITEMS)
+ if(err == ERROR_NO_MORE_ITEMS) {
break;
- if(err != ERROR_SUCCESS)
+ }
+ if(err != ERROR_SUCCESS) {
continue;
+ }
try {
- if(ckey["ComponentId"] != TAP_COMPONENT_ID)
+ if(ckey["ComponentId"] != TAP_COMPONENT_ID) {
continue;
+ }
actual_node_ = ckey["NetCfgInstanceId"];
RegistryKey nkey;
std::stringstream keyname;
keyname << NETWORK_CONNECTIONS_KEY << "\\" << actual_node_ << "\\Connection";
err = nkey.open(HKEY_LOCAL_MACHINE, keyname.str().c_str(), KEY_QUERY_VALUE);;
- if(err != ERROR_SUCCESS)
+ if(err != ERROR_SUCCESS) {
continue;
-
- actual_name_ = nkey["Name"];
- } catch(AnytunErrno&) { continue; }
+ }
+
+ actual_name_ = nkey["Name"];
+ } catch(AnytunErrno&) { continue; }
if(dev_name != "") {
if(dev_name == actual_name_) {
found = true;
break;
}
- }
- else {
+ } else {
std::stringstream tapname;
tapname << USERMODEDEVICEDIR << actual_node_ << TAPSUFFIX;
handle_ = CreateFileA(tapname.str().c_str(), GENERIC_WRITE | GENERIC_READ, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, 0);
- if(handle_ == INVALID_HANDLE_VALUE)
+ if(handle_ == INVALID_HANDLE_VALUE) {
continue;
+ }
found = true;
break;
}
@@ -163,18 +172,19 @@ DWORD TunDevice::performIoControl(DWORD controlCode, LPVOID inBuffer, DWORD inBu
OVERLAPPED overlapped;
overlapped.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
overlapped.Offset = 0;
- overlapped.OffsetHigh = 0;
-
+ overlapped.OffsetHigh = 0;
+
DWORD len;
if(!DeviceIoControl(handle_, controlCode, inBuffer, inBufferSize, outBuffer, outBufferSize, &len, &overlapped)) {
DWORD err = GetLastError();
if(err == ERROR_IO_PENDING) {
WaitForSingleObject(overlapped.hEvent, INFINITE);
- if(!GetOverlappedResult(handle_, &overlapped, &len, FALSE))
+ if(!GetOverlappedResult(handle_, &overlapped, &len, FALSE)) {
return GetLastError();
- }
- else
+ }
+ } else {
return GetLastError();
+ }
}
return ERROR_SUCCESS;
}
@@ -182,27 +192,30 @@ DWORD TunDevice::performIoControl(DWORD controlCode, LPVOID inBuffer, DWORD inBu
TunDevice::~TunDevice()
{
- if(handle_ != INVALID_HANDLE_VALUE)
+ if(handle_ != INVALID_HANDLE_VALUE) {
CloseHandle(handle_);
- if(roverlapped_.hEvent != INVALID_HANDLE_VALUE)
+ }
+ if(roverlapped_.hEvent != INVALID_HANDLE_VALUE) {
CloseHandle(roverlapped_.hEvent);
- if(woverlapped_.hEvent != INVALID_HANDLE_VALUE)
+ }
+ if(woverlapped_.hEvent != INVALID_HANDLE_VALUE) {
CloseHandle(woverlapped_.hEvent);
+ }
}
int TunDevice::fix_return(int ret, size_t pi_length) const
{
-// nothing to be done here
- return 0;
+ // nothing to be done here
+ return 0;
}
int TunDevice::read(u_int8_t* buf, u_int32_t len)
{
DWORD lenout;
roverlapped_.Offset = 0;
- roverlapped_.OffsetHigh = 0;
+ roverlapped_.OffsetHigh = 0;
ResetEvent(roverlapped_.hEvent);
-
+
if(!ReadFile(handle_, buf, len, &lenout, &roverlapped_)) {
DWORD err = GetLastError();
if(err == ERROR_IO_PENDING) {
@@ -211,8 +224,7 @@ int TunDevice::read(u_int8_t* buf, u_int32_t len)
cLog.msg(Log::PRIO_ERROR) << "Error while trying to get overlapped result: " << AnytunErrno(GetLastError());
return -1;
}
- }
- else {
+ } else {
cLog.msg(Log::PRIO_ERROR) << "Error while reading from device: " << AnytunErrno(GetLastError());
return -1;
}
@@ -224,10 +236,10 @@ int TunDevice::write(u_int8_t* buf, u_int32_t len)
{
DWORD lenout;
woverlapped_.Offset = 0;
- woverlapped_.OffsetHigh = 0;
+ woverlapped_.OffsetHigh = 0;
ResetEvent(woverlapped_.hEvent);
- if(!WriteFile(handle_, buf, len, &lenout, &woverlapped_)) {
+ if(!WriteFile(handle_, buf, len, &lenout, &woverlapped_)) {
DWORD err = GetLastError();
if(err == ERROR_IO_PENDING) {
WaitForSingleObject(woverlapped_.hEvent, INFINITE);
@@ -235,18 +247,17 @@ int TunDevice::write(u_int8_t* buf, u_int32_t len)
cLog.msg(Log::PRIO_ERROR) << "Error while trying to get overlapped result: " << AnytunErrno(GetLastError());
return -1;
}
- }
- else {
+ } else {
cLog.msg(Log::PRIO_ERROR) << "Error while writing to device: " << AnytunErrno(GetLastError());
return -1;
}
}
- return lenout;
+ return lenout;
}
void TunDevice::init_post()
{
-// nothing to be done here
+ // nothing to be done here
}
void TunDevice::do_ifconfig()
@@ -260,18 +271,18 @@ void TunDevice::do_ifconfig()
if(err != ERROR_SUCCESS) {
CloseHandle(handle_);
AnytunError::throwErr() << "Unable to set device dhcp masq mode: " << AnytunErrno(err);
- }
+ }
u_long mtu;
err = performIoControl(TAP_IOCTL_GET_MTU, &mtu, sizeof(mtu), &mtu, sizeof(mtu));
if(err != ERROR_SUCCESS) {
CloseHandle(handle_);
AnytunError::throwErr() << "Unable to get device mtu: " << AnytunErrno(err);
- }
+ }
conf_.mtu_ = static_cast<u_int16_t>(mtu);
}
void TunDevice::waitUntilReady()
{
-// nothing to be done here
+ // nothing to be done here
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-26 10:01:33 +0000