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135 lines
3.0 KiB
C
135 lines
3.0 KiB
C
#include "client.h"
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#include "server.h"
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#define DEFAULT_BUFLEN 512
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SOCKET ConnectSocket = INVALID_SOCKET;
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DWORD WINAPI ClientWriteToPipe(LPDWORD dummy);
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DWORD WINAPI ClientReadFromPipe(LPDWORD dummy);
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VOID StartShellClient(TCHAR *ServerIP) {
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WSADATA wsaData;
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int iResult;
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struct addrinfo* result = NULL, *ptr = NULL, hints;
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// Initialize Winsock
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iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
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if (iResult != 0) {
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printf("WSAStartup failed: %d\n", iResult);
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return 1;
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}
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// Create socket for client
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ZeroMemory(&hints, sizeof(hints));
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hints.ai_family = AF_INET;
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_protocol = IPPROTO_TCP;
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// Resolve the server address and port
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iResult = getaddrinfo(ServerIP, DEFAULT_PORT, &hints, &result);
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if (iResult != 0) {
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printf("getaddrinfo failed: %d\n", iResult);
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WSACleanup();
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return 1;
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}
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// Attempt to connect to the first address returned by the call to getaddrinfo
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ptr = result;
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// Create a SOCKET for connecting to server
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ConnectSocket = socket(ptr->ai_family, ptr->ai_socktype,
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ptr->ai_protocol);
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if (ConnectSocket == INVALID_SOCKET) {
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printf("Error at socket(): %ld\n", WSAGetLastError());
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freeaddrinfo(result);
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WSACleanup();
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return 1;
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}
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// Connect to a socket
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//
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// Connect to server.
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iResult = connect(ConnectSocket, ptr->ai_addr, (int)ptr->ai_addrlen);
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if (iResult == SOCKET_ERROR) {
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closesocket(ConnectSocket);
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ConnectSocket = INVALID_SOCKET;
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}
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freeaddrinfo(result);
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if (ConnectSocket == INVALID_SOCKET) {
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printf("Unable to connect to server!\n");
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WSACleanup();
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return 1;
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}
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HANDLE threads[2];
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threads[0] = CreateThread(NULL, 0, ClientWriteToPipe, NULL, 0, NULL);
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threads[1] = CreateThread(NULL, 0, ClientReadFromPipe, NULL, 0, NULL);
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WaitForMultipleObjects(2, threads, TRUE, INFINITE);
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for (int i = 0; i < 2; ++i)
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CloseHandle(threads[i]);
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// Finalize
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// shutdown the send half of the connection since no more data will be sent
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iResult = shutdown(ConnectSocket, SD_SEND);
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if (iResult == SOCKET_ERROR) {
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printf("shutdown failed: %d\n", WSAGetLastError());
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closesocket(ConnectSocket);
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WSACleanup();
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return 1;
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}
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// cleanup
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closesocket(ConnectSocket);
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WSACleanup();
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return 0;
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}
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DWORD WINAPI ClientWriteToPipe(LPDWORD dummy) {
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UNREFERENCED_PARAMETER(dummy);
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DWORD iResult, dwRead, bSuccess;
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for (;;) {
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CHAR chBuf[DEFAULT_BUFLEN] = "";
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bSuccess =
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ReadFile(GetStdHandle(STD_INPUT_HANDLE), chBuf, DEFAULT_BUFLEN, &dwRead, NULL);
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if (!bSuccess) {
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return 1;
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}
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iResult = send(ConnectSocket, chBuf, dwRead, 0);
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if (iResult == SOCKET_ERROR) {
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return -1;
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}
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}
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}
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DWORD WINAPI ClientReadFromPipe(LPDWORD dummy) {
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UNREFERENCED_PARAMETER(dummy);
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DWORD iResult, dwRead, bSuccess;
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for (;;) {
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CHAR chBuf[DEFAULT_BUFLEN + 1] = "";
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iResult = recv(ConnectSocket, chBuf, DEFAULT_BUFLEN, 0);
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if (iResult > 0) {
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chBuf[strlen(chBuf)] = 0;
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bSuccess = WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), chBuf,
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strlen(chBuf), &dwRead, NULL);
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if (!bSuccess) {
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return 1;
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}
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}
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else {
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return -1;
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}
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}
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} |