hack for x-forwarded-for

gistfile1.txt

int connection_proxy_deliver(Connection *conn)
{   
    int rc = 0;
    int req_len = Request_header_length(conn->req);
    int cont_len = Request_content_length(conn->req);
    int total_len = req_len+cont_len;
    bstring xff;
    char *xffBuf;
    unsigned sofar=0;

    char *buf = IOBuf_read_all(conn->iob, total_len, CLIENT_READ_RETRIES);
    check(buf != NULL, "Failed to read from the client socket to proxy.");

    rc = IOBuf_send(conn->proxy_iob, IOBuf_start(conn->iob), req_len-2);
    check(rc > 0, "Failed to send to proxy.");

    xff = Request_get(conn->req, &HTTP_X_FORWARDED_FOR);
#error Don't copy and paste this, the Right Way is to use a filter
    xffBuf = malloc(blength(&HTTP_X_FORWARDED_FOR)+2+blength(xff)+2);
    memcpy(xffBuf,bdata(&HTTP_X_FORWARDED_FOR),blength(&HTTP_X_FORWARDED_FOR));
    sofar+=blength(&HTTP_X_FORWARDED_FOR);
    
    memcpy(xffBuf+sofar,": ",2);
    sofar+=2;

    memcpy(xffBuf+sofar,bdata(xff),blength(xff));
    sofar+=blength(xff);
        
    memcpy(xffBuf+sofar,"\r\n",2);
    sofar+=2;
    
    rc = IOBuf_send(conn->proxy_iob, xffBuf, sofar);
    check(rc > 0, "Failed to send to proxy.");
    
    rc = IOBuf_send(conn->proxy_iob, IOBuf_start(conn->iob)+req_len-2, cont_len+2);
    check(rc > 0, "Failed to send to proxy.");
    
    return REQ_SENT;
    
error:
    return REMOTE_CLOSE;
}