handle_accept.c

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/**
 * \file
 *
 * \author  Georg Hopp
 *
 * \copyright
 * Copyright © 2012  Georg Hopp
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>

#include <openssl/ssl.h>

#include "http/worker.h"
#include "server.h"
#include "class.h"
#include "logger.h"
#include "stream.h"

int
serverHandleAccept(Server this, unsigned int i)
{
    char   remoteAddr[16] = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
    Sock   acc = NULL;
    Stream st;

    if (this->nfds >= this->max_fds) {
        return -1;
    }

    acc = socketAccept((0 == i)? this->sock : this->sockSSL, &remoteAddr);

    if (NULL != acc && -1 != acc->handle) {
        socketNonblock(acc);

        switch(i) {
            case 0:
                // no SSL
                st = new(Stream, STREAM_FD, acc->handle);
                break;

            case 1:
                // SSL
                {
                    SSL * ssl = SSL_new(this->ctx);
                    SSL_set_fd(ssl, acc->handle);
                    SSL_accept(ssl);
                    st = new(Stream, STREAM_SSL, ssl);
                }
                break;

            default:
                st = NULL;
                break;
        }

        // save the socket handle
        (this->conns)[acc->handle].sock   = acc; 

        // clone worker
        (this->conns)[acc->handle].worker = clone(this->worker);
        (this->conns)[acc->handle].stream = st;

        (this->fds)[this->nfds].fd        = acc->handle;
        (this->fds)[this->nfds].events    = POLLIN;
        this->nfds++;
    } else {
        delete(acc);

        switch(errno) {
            case EAGAIN|EWOULDBLOCK:
            case EINTR:
                loggerLog(this->logger,
                        LOGGER_DEBUG,
                        "server accept blocks");
                return -1;
                break;

            default:
                loggerLog(this->logger,
                        LOGGER_DEBUG,
                        "server accept error");
                return -2;
                break;
        }
    }

    if (0 == this->nfds%200) {
        loggerLog(this->logger,
                LOGGER_DEBUG, "paralel connections: %lu", this->nfds);
    }

    return acc->handle;
}

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