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Update Redirector

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This commit is contained in:
Netch
2021-09-11 20:59:35 +08:00
parent 87fe315c71
commit 5c9faa3fe9
12 changed files with 103 additions and 675 deletions
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263
Redirector/EventHandler.cpp
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@@ -1,38 +1,28 @@
#include "EventHandler.h"
#include "TCPHandler.h"
extern BOOL filterTCP;
extern BOOL filterUDP;
extern USHORT udpPort;
extern vector<wstring> bypassList;
extern vector<wstring> handleList;
extern mutex tcpLock;
extern mutex udpLock;
extern map<ENDPOINT_ID, PTCPINFO> tcpContext;
extern map<ENDPOINT_ID, PUDPINFO> udpContext;
PTCPHandler tcpHandler = NULL;
wstring getAddrString(PSOCKADDR addr)
wstring ConvertIP(PSOCKADDR addr)
{
WCHAR buffer[MAX_PATH] = L"";
DWORD bufferLength = MAX_PATH;
if (addr->sa_family == AF_INET)
{
WSAAddressToString(addr, sizeof(SOCKADDR_IN), NULL, buffer, &bufferLength);
WSAAddressToStringW(addr, sizeof(SOCKADDR_IN), NULL, buffer, &bufferLength);
}
else
{
WSAAddressToString(addr, sizeof(SOCKADDR_IN6), NULL, buffer, &bufferLength);
WSAAddressToStringW(addr, sizeof(SOCKADDR_IN6), NULL, buffer, &bufferLength);
}
return buffer;
}
wstring getProcessName(DWORD id)
wstring GetProcessName(DWORD id)
{
if (id == 0)
{
@@ -64,7 +54,7 @@ wstring getProcessName(DWORD id)
BOOL checkBypassName(DWORD id)
{
auto name = getProcessName(id);
auto name = GetProcessName(id);
for (size_t i = 0; i < bypassList.size(); i++)
{
@@ -79,7 +69,7 @@ BOOL checkBypassName(DWORD id)
BOOL checkHandleName(DWORD id)
{
auto name = getProcessName(id);
auto name = GetProcessName(id);
for (size_t i = 0; i < handleList.size(); i++)
{
@@ -94,52 +84,12 @@ BOOL checkHandleName(DWORD id)
BOOL eh_init()
{
tcpHandler = new TCPHandler();
if (!tcpHandler->init())
{
return FALSE;
}
return TRUE;
}
void eh_free()
{
{
lock_guard<mutex> lg(tcpLock);
for (auto& [k, v] : tcpContext)
{
delete v;
continue;
}
tcpContext.clear();
if (tcpHandler)
{
tcpHandler->free();
delete tcpHandler;
tcpHandler = NULL;
}
}
{
lock_guard<mutex> lg(udpLock);
for (auto& [k, v] : udpContext)
{
if (v->Socket)
{
closesocket(v->Socket);
v->Socket = NULL;
}
delete v;
continue;
}
udpContext.clear();
}
}
void threadStart()
@@ -158,7 +108,7 @@ void tcpConnectRequest(ENDPOINT_ID id, PNF_TCP_CONN_INFO info)
{
nf_tcpDisableFiltering(id);
wcout << "[Redirector][EventHandler][tcpConnectRequest][" << id << "][" << info->processId << "][!filterTCP] " << getProcessName(info->processId) << endl;
wcout << "[Redirector][EventHandler][tcpConnectRequest][" << id << "][" << info->processId << "][!filterTCP] " << GetProcessName(info->processId) << endl;
return;
}
@@ -166,7 +116,7 @@ void tcpConnectRequest(ENDPOINT_ID id, PNF_TCP_CONN_INFO info)
{
nf_tcpDisableFiltering(id);
wcout << "[Redirector][EventHandler][tcpConnectRequest][" << id << "][" << info->processId << "][checkBypassName] " << getProcessName(info->processId) << endl;
wcout << "[Redirector][EventHandler][tcpConnectRequest][" << id << "][" << info->processId << "][checkBypassName] " << GetProcessName(info->processId) << endl;
return;
}
@@ -174,7 +124,7 @@ void tcpConnectRequest(ENDPOINT_ID id, PNF_TCP_CONN_INFO info)
{
nf_tcpDisableFiltering(id);
wcout << "[Redirector][EventHandler][tcpConnectRequest][" << id << "][" << info->processId << "][!checkHandleName] " << getProcessName(info->processId) << endl;
wcout << "[Redirector][EventHandler][tcpConnectRequest][" << id << "][" << info->processId << "][!checkHandleName] " << GetProcessName(info->processId) << endl;
return;
}
@@ -182,32 +132,14 @@ void tcpConnectRequest(ENDPOINT_ID id, PNF_TCP_CONN_INFO info)
{
nf_tcpDisableFiltering(id);
wcout << "[Redirector][EventHandler][tcpConnectRequest][" << id << "][" << info->processId << "][!IPv4 && !IPv6] " << getProcessName(info->processId) << endl;
wcout << "[Redirector][EventHandler][tcpConnectRequest][" << id << "][" << info->processId << "][!IPv4 && !IPv6] " << GetProcessName(info->processId) << endl;
return;
}
tcpHandler->Create(id, info);
wcout << "[Redirector][EventHandler][tcpConnectRequest][" << id << "][" << info->processId << "][" << getAddrString((PSOCKADDR)info->remoteAddress) << "] " << getProcessName(info->processId) << endl;
if (info->ip_family == AF_INET)
{
auto target = (PSOCKADDR_IN)info->remoteAddress;
target->sin_addr.S_un.S_addr = htonl(INADDR_LOOPBACK);
target->sin_port = htons(tcpHandler->ListenIPv4);
}
if (info->ip_family == AF_INET6)
{
auto target = (PSOCKADDR_IN6)info->remoteAddress;
memset(target->sin6_addr.u.Byte, 0, 16);
target->sin6_addr.u.Byte[15] = 0x01;
target->sin6_port = htons(tcpHandler->ListenIPv6);
}
}
void tcpConnected(ENDPOINT_ID id, PNF_TCP_CONN_INFO info)
{
wcout << "[Redirector][EventHandler][tcpConnected][" << id << "][" << info->processId << "][" << getAddrString((PSOCKADDR)info->remoteAddress) << "] " << getProcessName(info->processId) << endl;
wcout << "[Redirector][EventHandler][tcpConnected][" << id << "][" << info->processId << "][" << ConvertIP((PSOCKADDR)info->remoteAddress) << "] " << GetProcessName(info->processId) << endl;
}
void tcpCanSend(ENDPOINT_ID id)
@@ -232,8 +164,6 @@ void tcpReceive(ENDPOINT_ID id, const char* buffer, int length)
void tcpClosed(ENDPOINT_ID id, PNF_TCP_CONN_INFO info)
{
tcpHandler->Delete(id);
printf("[Redirector][EventHandler][tcpClosed][%llu][%lu]\n", id, info->processId);
}
@@ -243,7 +173,7 @@ void udpCreated(ENDPOINT_ID id, PNF_UDP_CONN_INFO info)
{
nf_udpDisableFiltering(id);
wcout << "[Redirector][EventHandler][udpCreated][" << id << "][" << info->processId << "][!filterUDP] " << getProcessName(info->processId) << endl;
wcout << "[Redirector][EventHandler][udpCreated][" << id << "][" << info->processId << "][!filterUDP] " << GetProcessName(info->processId) << endl;
return;
}
@@ -251,7 +181,7 @@ void udpCreated(ENDPOINT_ID id, PNF_UDP_CONN_INFO info)
{
nf_udpDisableFiltering(id);
wcout << "[Redirector][EventHandler][udpCreated][" << id << "][" << info->processId << "][checkBypassName] " << getProcessName(info->processId) << endl;
wcout << "[Redirector][EventHandler][udpCreated][" << id << "][" << info->processId << "][checkBypassName] " << GetProcessName(info->processId) << endl;
return;
}
@@ -259,13 +189,9 @@ void udpCreated(ENDPOINT_ID id, PNF_UDP_CONN_INFO info)
{
nf_udpDisableFiltering(id);
wcout << "[Redirector][EventHandler][udpCreated][" << id << "][" << info->processId << "][!checkHandleName] " << getProcessName(info->processId) << endl;
wcout << "[Redirector][EventHandler][udpCreated][" << id << "][" << info->processId << "][!checkHandleName] " << GetProcessName(info->processId) << endl;
return;
}
lock_guard<mutex> lg(udpLock);
udpContext[id] = new UDPINFO();
udpContext[id]->PID = info->processId;
}
void udpConnectRequest(ENDPOINT_ID id, PNF_UDP_CONN_REQUEST info)
@@ -281,96 +207,7 @@ void udpCanSend(ENDPOINT_ID id)
void udpSend(ENDPOINT_ID id, const unsigned char* target, const char* buffer, int length, PNF_UDP_OPTIONS options)
{
lock_guard<mutex> lg(udpLock);
if (udpContext.find(id) == udpContext.end())
{
nf_udpPostSend(id, target, buffer, length, options);
return;
}
if (!udpContext[id]->Socket)
{
auto client = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (!client)
{
printf("[Redirector][EventHandler][udpSend][%llu] Create socket failed: %d\n", id, WSAGetLastError());
return;
}
SOCKADDR_IN addr;
addr.sin_family = AF_INET;
addr.sin_addr.S_un.S_addr = INADDR_ANY;
addr.sin_port = 0;
if (bind(client, (PSOCKADDR)&addr, sizeof(SOCKADDR_IN)) == SOCKET_ERROR)
{
closesocket(client);
printf("[Redirector][EventHandler][udpSend][%llu] Bind socket failed: %d\n", id, WSAGetLastError());
return;
}
addr.sin_addr.S_un.S_addr = htonl(INADDR_LOOPBACK);
addr.sin_port = htons(udpPort);
if (sendto(client, (PCHAR)&udpContext[id]->PID, 4, 0, (PSOCKADDR)&addr, sizeof(SOCKADDR_IN)) == SOCKET_ERROR)
{
closesocket(client);
printf("[Redirector][EventHandler][udpSend][%llu] Send initial data failed: %d\n", id, WSAGetLastError());
return;
}
udpContext[id]->Socket = client;
auto data = new BYTE[sizeof(NF_UDP_OPTIONS) + options->optionsLength - 1]();
memcpy(data, options, sizeof(NF_UDP_OPTIONS) + options->optionsLength - 1);
thread(&udpBeginReceive, id, client, data).detach();
}
char* data = NULL;
int dataLength = 0;
if (((PSOCKADDR)target)->sa_family == AF_INET)
{
dataLength = length + 7;
data = new char[dataLength]();
data[0] = 0x01;
auto addr = (PSOCKADDR_IN)target;
memcpy(data + 1, &addr->sin_addr, 4);
memcpy(data + 5, &addr->sin_port, 2);
memcpy(data + 7, buffer, length);
}
else if (((PSOCKADDR)target)->sa_family == AF_INET6)
{
dataLength = length + 19;
data = new char[dataLength]();
data[0] = 0x04;
auto addr = (PSOCKADDR_IN6)target;
memcpy(data + 1, &addr->sin6_addr, 16);
memcpy(data + 17, &addr->sin6_port, 2);
memcpy(data + 19, buffer, length);
}
else
{
nf_udpPostSend(id, target, buffer, length, options);
return;
}
if (data)
{
SOCKADDR_IN remote;
remote.sin_family = AF_INET;
remote.sin_addr.S_un.S_addr = htonl(INADDR_LOOPBACK);
remote.sin_port = htons(udpPort);
if (sendto(udpContext[id]->Socket, data, dataLength, 0, (PSOCKADDR)&remote, sizeof(SOCKADDR_IN)) == SOCKET_ERROR)
{
printf("[Redirector][EventHandler][udpSend][%llu] Send data failed: %d\n", id, WSAGetLastError());
}
delete[] data;
}
nf_udpPostSend(id, target, buffer, length, options);
}
void udpCanReceive(ENDPOINT_ID id)
@@ -385,74 +222,6 @@ void udpReceive(ENDPOINT_ID id, const unsigned char* target, const char* buffer,
void udpClosed(ENDPOINT_ID id, PNF_UDP_CONN_INFO info)
{
UNREFERENCED_PARAMETER(id);
UNREFERENCED_PARAMETER(info);
lock_guard<mutex> lg(udpLock);
if (udpContext.find(id) != udpContext.end())
{
if (udpContext[id]->Socket != NULL)
{
closesocket(udpContext[id]->Socket);
udpContext[id]->Socket = NULL;
}
udpContext.erase(id);
}
printf("[Redirector][EventHandler][udpClosed][%llu]\n", id);
}
void udpBeginReceive(ENDPOINT_ID id, SOCKET client, PBYTE data)
{
auto buffer = new char[NF_TCP_PACKET_BUF_SIZE]();
while (true)
{
SOCKADDR_IN remote;
int remoteLength = sizeof(SOCKADDR_IN);
int length = recvfrom(client, buffer, NF_TCP_PACKET_BUF_SIZE, 0, (PSOCKADDR)&remote, &remoteLength);
if (length == 0)
{
break;
}
if (length == SOCKET_ERROR)
{
int last = WSAGetLastError();
if (last == 10004)
{
continue;
}
else if (last == 10038)
{
break;
}
printf("[Redirector][udpBeginReceive][%llu] Receive failed: %d\n", id, last);
break;
}
if (buffer[0] == 0x01 && length > 7)
{
SOCKADDR_IN target;
target.sin_family = AF_INET;
memcpy(&target.sin_addr, buffer + 1, 4);
memcpy(&target.sin_port, buffer + 5, 2);
nf_udpPostReceive(id, (PBYTE)&target, buffer + 7, length - 7, (PNF_UDP_OPTIONS)data);
}
else if (buffer[0] == 0x04 && length > 19)
{
SOCKADDR_IN6 target;
target.sin6_family = AF_INET6;
memcpy(&target.sin6_addr, buffer + 1, 16);
memcpy(&target.sin6_port, buffer + 17, 2);
nf_udpPostReceive(id, (PBYTE)&target, buffer + 19, length - 19, (PNF_UDP_OPTIONS)data);
}
}
delete[] data;
delete[] buffer;
}