smtp

#define _WINSOCK_DEPRECATED_NO_WARNINGS
#define _CRT_SECURE_NO_WARNINGS
#include <WinSock2.h>
#include <Windows.h>
#include <conio.h>
#include <iostream>
#include <string>
#include <ctime>
#include <fstream>

#pragma comment(lib, "ws2_32.lib")

using namespace std;

#define MAX_MSG 128
#define CRLF "\r\n"
string senderMail = "testpop3test1@wp.pl", reciverMail = "psulzyc@wi.zut.edu.pl", serverSMTP = "smtp.wp.pl", emailwbase64 = "dGVzdHBvcDN0ZXN0MUB3cC5wbA==", haslowbase64 = "VGVzdHBvcDM=" ;
string plain = "PLAIN";
string login = "LOGIN";
int port = 587;

int main()
{
    SOCKET sock_on;
    WSADATA wsaData;
    LPHOSTENT lpHostEntry;
    LPSERVENT lpServEntry;
    SOCKADDR SockAddr;
    struct sockaddr_in sok = { 0 };
    struct hostnet *hp;
    string command, s, msg_num;
    char buff[MAX_MSG];
    int n_bytes = 0;
    char szMsgLine[255] = "";
    int         iProtocolPort = 0;

    if (WSAStartup(MAKEWORD(2, 2), &wsaData))
    {
        cout << "Cannot find Winsock v" << 2 << "." << 2 << " or later!" << endl;

        return 1;
    }
    // Lookup email server's IP address.
    lpHostEntry = gethostbyname(serverSMTP.c_str());
    if (!lpHostEntry)
    {
        cout << "canoot find SMTP mail server" << serverSMTP << endl;
        return 1;
    }
    //sock_on = socket(AF_INET, SOCK_STREAM, 0); // init socket
    sock_on = socket(PF_INET, SOCK_STREAM, 0);
    sok.sin_family = AF_INET;
    sok.sin_addr = *((LPIN_ADDR)*lpHostEntry->h_addr_list);
    sok.sin_port = (unsigned short int) htons(port);

//------------------------------------------------------------------------------------
    if ((connect(sock_on, (sockaddr *)&sok, sizeof(sockaddr_in))))
    {
        cout << "nie udało się " << endl;
    }
    n_bytes = recv(sock_on, buff, MAX_MSG, 0);
    //cout << buff<<", "<< n_bytes << endl;
//------------------------------------------------------
    sprintf(szMsgLine, "EHLO %s%s", serverSMTP.c_str(), CRLF);
    n_bytes = send(sock_on, szMsgLine, strlen(szMsgLine), 0);
    cout << n_bytes << endl;
    n_bytes = recv(sock_on, buff, sizeof(buff), 0);
    cout << buff << ", " << n_bytes << endl;
//---------------------------------------------------------------------------------------------
    sprintf(szMsgLine, "AUTH %s%s", login.c_str(), CRLF);
    n_bytes = send(sock_on, szMsgLine, strlen(szMsgLine), 0);
    cout << n_bytes << endl;
    n_bytes = recv(sock_on, buff, sizeof(buff), 0);
    cout << buff << ", " << n_bytes << endl;
//-----------------------------------------------------------------------------------------------
    string mailiN = "dGVzdHBvcDN0ZXN0MUB3cC5wbA==";
    string hasloN = "VGVzdHBvcDM=";
//-------------------------------------------------------------------------------------------------
    sprintf(szMsgLine, "%s%s", mailiN.c_str(), CRLF);
    n_bytes = send(sock_on, szMsgLine, strlen(szMsgLine), 0);
    cout << n_bytes << endl;
    n_bytes = recv(sock_on, buff, sizeof(buff), 0);
    cout << buff << endl;
//-----------------------------------------------------------------------------------------------
    sprintf(szMsgLine, "%s%s", hasloN.c_str(), CRLF);
    n_bytes = send(sock_on, szMsgLine, strlen(szMsgLine), 0);
    cout << n_bytes << endl;
    n_bytes = recv(sock_on, buff, sizeof(buff), 0);
    cout << buff << endl;
//----------------------------------------------------------------- //
    sprintf(szMsgLine, "MAIL FROM:<%s>%s", senderMail.c_str(), CRLF);
    n_bytes = send(sock_on, szMsgLine, strlen(szMsgLine),0);
    cout << n_bytes << endl;
    n_bytes = recv(sock_on, buff, sizeof(buff), 0);

    cout << buff << ", " << n_bytes << endl;
//------------------------------------------------------
    sprintf(szMsgLine, "RCPT TO:<%s>%s", reciverMail.c_str(), CRLF);
    n_bytes = send(sock_on, szMsgLine, strlen(szMsgLine), 0);
    cout << n_bytes << endl;
    n_bytes = recv(sock_on, buff, sizeof(buff), 0);
    cout << buff << endl << n_bytes << endl;

//-------------------------------------------------------
    sprintf(szMsgLine, "DATA%s", CRLF);
    n_bytes = send(sock_on, szMsgLine, strlen(szMsgLine), 0);
    cout << n_bytes << endl;

    n_bytes = recv(sock_on, buff, sizeof(buff), 0);
    cout << buff << endl;

    string testwiadomosc = "testpop3test1@wp.pl";
    sprintf(szMsgLine, "FROM: %s%s", testwiadomosc.c_str(), CRLF);
    send(sock_on, szMsgLine, strlen(szMsgLine), 0);


    testwiadomosc = "data";
    sprintf(szMsgLine, "Date: %s%s", testwiadomosc.c_str(), CRLF);
    send(sock_on, szMsgLine, strlen(szMsgLine), 0);

    testwiadomosc = "Temat";
    sprintf(szMsgLine, "Subject: %s%s", testwiadomosc.c_str(), CRLF);
    send(sock_on, szMsgLine, strlen(szMsgLine), 0);

    testwiadomosc = "test smtptest";
    sprintf(szMsgLine, "%s%s", testwiadomosc.c_str(), CRLF);
    send(sock_on, szMsgLine, strlen(szMsgLine), 0);

    testwiadomosc = "test smtptest";
    sprintf(szMsgLine, "%s%s", testwiadomosc.c_str(), CRLF);
    send(sock_on, szMsgLine, strlen(szMsgLine), 0);

    sprintf(szMsgLine, "%s%s", testwiadomosc.c_str(), CRLF);
    send(sock_on, szMsgLine, strlen(szMsgLine), 0);
//-----------------------------------------------------
    sprintf(szMsgLine, "%s.%s", CRLF, CRLF);
    n_bytes = send(sock_on, szMsgLine, strlen(szMsgLine), 0);
    cout << n_bytes << endl;

    n_bytes = recv(sock_on, buff, sizeof(buff), 0);
    cout << buff << endl;
//-----------------------------------------------------
// Send QUIT
    sprintf(szMsgLine, "QUIT%s", CRLF);
    send(sock_on, szMsgLine, strlen(szMsgLine), 0);
    recv(sock_on, buff, sizeof(buff), 0);
    cout << buff << endl;
    cout << "Sent as email message to " << reciverMail << endl;

    closesocket(sock_on);
    getchar();
    return 0;
}