/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

#include "networkio.h"

ap_status_t ap_send(ap_socket_t *sock, const char *buf, ap_ssize_t *len)
{
    ssize_t rv;
	
    do {
        rv = send(sock->socketdes, buf, (*len), 0);
    } while (rv == -1 && errno == EINTR);

    if (rv == -1 && errno == EAGAIN && sock->timeout > 0) {
        struct timeval *tv;
        fd_set fdset;
        int srv;

        do {
            FD_ZERO(&fdset);
            FD_SET(sock->socketdes, &fdset);
            if (sock->timeout == -1)
                tv = NULL;
            else {
                tv = (struct timeval *)ap_palloc(sock->cntxt, sizeof(struct timeval));
                tv->tv_sec  = sock->timeout;
                tv->tv_usec = 0;
            }
            
            srv = select(FD_SETSIZE, NULL, &fdset, NULL, tv);
        } while (srv == -1 && errno == EINTR);

        if (srv == 0) {
            (*len) = -1;
            return APR_TIMEUP;
        }
        if (srv < 1) {
            (*len) = -1;
            return errno;
        }
        else {
            do {
                rv = send(sock->socketdes, buf, (*len),0);
            } while (rv == -1 && errno == EINTR);
        }
    }
    (*len) = rv;
    return APR_SUCCESS;
}

ap_status_t ap_recv(ap_socket_t *sock, char *buf, ap_ssize_t *len)
{
    ap_ssize_t rv;
   
    do {
        rv = recv(sock->socketdes, buf, (*len), 0);
    } while (rv == -1 && errno == EINTR);

    if (rv == -1 && errno == EAGAIN && sock->timeout > 0) {
        struct timeval *tv;
        fd_set fdset;
        int srv;

        do {
            FD_ZERO(&fdset);
            FD_SET(sock->socketdes, &fdset);
            if (sock->timeout == -1)
                tv = NULL;
            else {
                tv = (struct timeval *)ap_palloc(sock->cntxt, sizeof(struct timeval));
                tv->tv_sec  = sock->timeout;
                tv->tv_usec = 0;
            }
            
            srv = select(FD_SETSIZE, &fdset, NULL, NULL, tv);
        } while (srv == -1 && errno == EINTR);

        if (srv == 0) {
            (*len) = -1;
            return APR_TIMEUP;
        }
        if (srv < 1) {
            (*len) = -1;
            return errno;
        }
        else {
            do {
                rv = recv(sock->socketdes, buf, (*len), 0);
            } while (rv == -1 && errno == EINTR);
        }
    }
    (*len) = rv;
    return APR_SUCCESS;
}