Released

Released

Socket Client/main.c

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+#ifndef WIN32_LEAG_AND_MEAN
+#define WIN32_LEAG_AND_MEAN
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <winsock2.h>
+#include <windows.h>
+#include <ws2tcpip.h>
+#include <iphlpapi.h>
+#include <process.h>
+#include <stdatomic.h>
+//#include <unistd.h>
+#include <conio.h>
+
+#pragma comment(lib, "Ws2_32.lib")
+
+#define BUFLEN 512
+#define PORT 27015
+#define ADDRESS "93.190.8.248"
+int first= !0;
+int pass= 0;
+int key=3;
+char si = 126;
+
+//global Running variable
+_Atomic char running = 0;
+
+DWORD WINAPI sendThreadFunc(LPVOID lpParam);
+
+
+int main(void) {
+	printf("Welcome!\n");
+	int res;
+	char dec[BUFLEN];
+	int tilda =0;
+
+	//Init
+	WSADATA wsaData;
+	res = WSAStartup(MAKEWORD(2,2), &wsaData);
+	if(res)
+		{
+			printf("Startup Failed: %d\n", res);
+			return -1;
+		}
+
+	//SETUP Client
+
+	//Construct socket
+	SOCKET client;
+	client = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+	if(client == INVALID_SOCKET)
+		{
+			printf("Error with construction: %d\n", WSAGetLastError());
+			WSACleanup();
+			return -1;
+		}
+	//connect to adress
+	struct sockaddr_in address;
+	address.sin_family = AF_INET;
+	address.sin_addr.s_addr = inet_addr(ADDRESS);
+	address.sin_port = htons(PORT);
+	res = connect(client, (struct sockaddr *)&address, sizeof(address));
+	if(res == SOCKET_ERROR)
+		{
+			printf("Connection Failed : %d\n",WSAGetLastError());
+			closesocket(client);
+			WSACleanup();
+			return -1;
+		}
+	else if (client == INVALID_SOCKET)
+		{
+			printf("Connection Failed : %d\n",WSAGetLastError());
+			WSACleanup();
+			return -1;
+		}
+
+	printf("Connection Parameters =  %s:%d\n", ADDRESS, PORT);
+	running = !0;
+
+	//Main Loop
+
+	// Send Thread
+	DWORD thrdId;
+	HANDLE sendThread = CreateThread(NULL, 0, sendThreadFunc, &client, 0, &thrdId);
+	if(sendThread)
+		{
+			printf("Send Thread Started with Thread ID: %d\n", thrdId);
+		}
+	else
+		{
+			printf("Send thread failed: %d\n", GetLastError());
+		}
+	
+	//receive loop
+	char recvbuf[BUFLEN];
+	do
+	{
+		res = recv(client, recvbuf, BUFLEN, 0);
+		recvbuf[res] = '\0';
+		strcpy(dec,recvbuf);
+		tilda = 0;
+		if(res >0)
+			{
+				for(int i=0;i<strlen(dec);i++)
+					{
+						if(dec[i]==126 && tilda==0)
+							{
+								dec[i]=26;
+								for(int j=i+1;j<strlen(dec);j++)
+									{
+										dec[j]=dec[j]-key;
+									}
+								tilda=1;
+							}
+					}
+				printf("%s\n",dec);
+			}
+		else if(!res)
+			{
+				printf("Connection closed.\n");
+				running = 0;
+			}
+		else
+			{
+				printf("Receive Failed: %d\n",WSAGetLastError());
+				running = 0;
+			}
+	}
+	while(res >0);
+
+	running = 0;
+
+	//connection finished, terminator for thread
+	if(CloseHandle(sendThread))
+		{
+			printf("Send thread closed successfully.\n");
+		}
+
+	//CleanUP
+
+	res = shutdown(client, SD_BOTH);
+	if(res==SOCKET_ERROR)
+		{
+			printf("Shutdown failed : %d\n",WSAGetLastError());
+			closesocket(client);
+			WSACleanup();
+			return 1;
+		}
+	closesocket(client);
+	WSACleanup();
+	
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+	return 0;
+}
+
+DWORD WINAPI sendThreadFunc(LPVOID lpParam)
+	{
+		SOCKET client = *(SOCKET*)lpParam;
+		char sendbuf[BUFLEN];
+		int sendbuflen, res;
+		char name[20];
+		char passw[20];
+		char enc[BUFLEN];
+
+		while(running)
+			{
+				strcpy(enc,"");
+				strcpy(sendbuf,"");
+				if(first!=0)
+					{
+						//Name
+						strcpy(name,"");
+						printf("\t\t\tName = ");
+						scanf("%s",name);
+						printf("\n");
+						
+						res=send(client, name,strlen(name),0);
+						if(res!=strlen(name))
+							{
+								printf("\n---Name couldn't send, your first successful message will be your name\n");
+							}
+						first=0;
+					}
+				if(pass==0)
+							{
+								//PassW
+								strcpy(passw,"");
+								printf("\t\t\tPassword = ");
+								scanf("%s",passw);
+								printf("\n");
+								res=send(client, passw,strlen(passw),0);
+								if(res!=strlen(passw))
+									{
+										printf("\n---Password couldn't send, your first successful message will be your password\n");
+									}
+								pass=1;
+								system("cls");
+							}
+				else
+					{
+						fgets(sendbuf, BUFLEN-1, stdin);
+						sendbuf[strlen(sendbuf)-1]='\0';
+						sendbuflen = strlen(sendbuf);
+						if(sendbuf[0]!='\n' && !(sendbuf[0]=='\t'&&sendbuflen==2))
+							{
+								if(sendbuf[0]!='/')
+									{
+										strcat(enc,&si);
+										strcat(enc,sendbuf);
+										for(int i =1;i<strlen(enc);i++)
+											{
+												enc[i]=enc[i]+key;
+											}
+										
+									}
+								else
+									{
+										strcat(enc,sendbuf);
+									}
+								enc[strlen(enc)]='\0';
+								if(strlen(enc)>1)
+									{
+										res=send(client, enc,strlen(enc),0);
+										printf("\n");
+										if(res !=strlen(enc))
+											{
+												printf("---SYSTEM--- = Send Failed.\n");
+											}
+									}
+							}
+					}
+			}
+				
+		return 0;
+	}