blob: 8c10096eaee6b8ba12624495b252b4dceac9a7c7 [file] [log] [blame]
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001 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/>.
*
* Originally developed by Aaron Bannert and Justin Erenkrantz, eBuilt.
*/
#include "config.h"
#include "flood_profile.h"
#include "flood_net.h"
/* Open the TCP connection to the server */
flood_socket_t* open_socket(apr_pool_t *pool, request_t *r)
{
apr_status_t rv = 0;
apr_sockaddr_t *destsa;
flood_socket_t* fs;
fs = apr_palloc(pool, sizeof(flood_socket_t));
if ((rv = apr_sockaddr_info_get(&destsa, r->parsed_uri->hostname, APR_INET,
r->parsed_uri->port, 0, pool))
!= APR_SUCCESS) {
return NULL;
}
if ((rv = apr_socket_create(&fs->socket, APR_INET, SOCK_STREAM,
pool)) != APR_SUCCESS) {
return NULL;
}
if ((rv = apr_connect(fs->socket, destsa)) != APR_SUCCESS) {
if (APR_STATUS_IS_EINPROGRESS(rv)) {
/* FIXME: Handle better */
close_socket(fs);
return NULL;
}
else if (APR_STATUS_IS_EAGAIN(rv))
{
/* We have run out of ports available due to TIME_WAIT exhaustion.
* Sleep for four minutes, and try again.
* Note: Solaris returns EADDRNOTAVAIL, Linux returns EAGAIN.
* XXX: Then APR'IZE THIS ALREADY
*/
apr_sleep(4 * 60 * APR_USEC_PER_SEC);
return open_socket(pool, r);
}
else
{
/* FIXME: Handle */
close_socket(fs);
return NULL;
}
}
apr_setsocketopt(fs->socket, APR_SO_TIMEOUT, LOCAL_SOCKET_TIMEOUT);
fs->read_pollset.desc_type = APR_POLL_SOCKET;
fs->read_pollset.desc.s = fs->socket;
fs->read_pollset.reqevents = APR_POLLIN;
fs->read_pollset.p = pool;
return fs;
}
/* close down TCP socket */
void close_socket(flood_socket_t *s)
{
/* FIXME: recording and other stuff here? */
apr_socket_close(s->socket);
}
apr_status_t read_socket(flood_socket_t *s, char *buf, int *buflen)
{
apr_status_t e;
apr_int32_t socketsRead;
e = apr_poll(&s->read_pollset, 1, &socketsRead, LOCAL_SOCKET_TIMEOUT);
if (e != APR_SUCCESS)
return e;
return apr_recv(s->socket, buf, buflen);
}
apr_status_t write_socket(flood_socket_t *s, request_t *r)
{
apr_size_t l;
apr_status_t e;
l = r->rbufsize;
e = apr_send(s->socket, r->rbuf, &l);
/* FIXME: Better error and allow restarts? */
if (l != r->rbufsize)
return APR_EGENERAL;
return e;
}
apr_status_t check_socket(flood_socket_t *s, apr_pool_t *pool)
{
apr_status_t e;
apr_int32_t socketsRead;
apr_pollfd_t pout;
apr_int16_t event;
pout.desc_type = APR_POLL_SOCKET;
pout.desc.s = s->socket;
pout.reqevents = APR_POLLIN | APR_POLLPRI | APR_POLLERR | APR_POLLHUP | APR_POLLNVAL;
pout.p = pool;
e = apr_poll(&pout, 1, &socketsRead, 1000);
if (socketsRead && pout.rtnevents) {
return APR_EGENERAL;
}
return APR_SUCCESS;
}