[C] HTTP-Request Probleme !

[luxury11]

Habs mal geändert und es läuft. Ich hoffe mal der Buffing overfl0w is auch gefixt mit httpLength+strlen(httpResponse) <= MAX_BUF.

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

#include <stdio.h>
#include <Windows.h>
#include <WinSock.h>
#include <string.h>

#define MAX_BUF 32766

int main(int argc, char *argv[])
{
    char httpRequest[MAX_BUF] = {0};
    char httpParameter[] = "GET /index.php HTTP/1.0\r\nHost:";
    char httpHost[] = "twitter.com";
    char httpSub[] = "\r\n";
    char httpResponse[MAX_BUF] = {0};
    char httpBuffer[MAX_BUF] = {0};
    char *httpAddr;
    int httpLength = MAX_BUF;
    int httpPort = 80;
    struct sockaddr_in serveraddr;
    SOCKET sock;
    WSADATA wsaData;
    PHOSTENT remoteHost;

    strncat(httpRequest,httpParameter,strlen(httpParameter));
    strncat(httpRequest,httpHost,strlen(httpHost));
    strncat(httpRequest,httpSub,strlen(httpSub));
    strncat(httpRequest,httpSub,strlen(httpSub));

    if (WSAStartup(MAKEWORD(2, 0), &wsaData) != 0)
    {
        return 1;
    }
    if ((sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
    {
        return 2;        
    }

    remoteHost = gethostbyname(httpHost);
    if(remoteHost == NULL)
    {
        return 3;
    }
    httpAddr = inet_ntoa (*(struct in_addr *)*remoteHost->h_addr_list); 

    memset(&serveraddr, 0, sizeof(serveraddr));
    serveraddr.sin_family      = AF_INET;
    serveraddr.sin_addr.s_addr = inet_addr((const char*)httpAddr);
    serveraddr.sin_port        = htons((unsigned short) httpPort);

    if (connect(sock, (struct sockaddr *) &serveraddr, sizeof(serveraddr)) < 0)
    {
        return 4;
    }
    if (send(sock, httpRequest, strlen(httpRequest), 0) != strlen(httpRequest))
    {
        return 5;
    }

    do 
    {
        httpLength = recv(sock, httpBuffer, MAX_BUF, 0);
        if ( httpLength > 0 && (httpLength+strlen(httpResponse) <= MAX_BUF))
        {
            strncat(httpResponse, httpBuffer, httpLength);
        }
        else if( httpLength == 0 )
        {
        }
        else
        {
            return 6;
        }

    } 
    while( httpLength > 0 );

    printf("%s",httpResponse);
    Sleep(20000);
    
    return 0;
}