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/* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Data Differential YATL (i.e. libtest) library
*
* Copyright (C) 2012 Data Differential, http://datadifferential.com/
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * 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.
*
* * The names of its contributors may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS 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 COPYRIGHT
* OWNER OR 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.
*
*/
#include "libtest/yatlcon.h"
#include <libtest/common.h>
#include <cassert>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <fnmatch.h>
#include <iostream>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <utility>
#include <vector>
#include <signal.h>
#include <libtest/signal.h>
#ifndef SOCK_CLOEXEC
# define SOCK_CLOEXEC 0
#endif
#ifndef SOCK_NONBLOCK
# define SOCK_NONBLOCK 0
#endif
#ifndef FD_CLOEXEC
# define FD_CLOEXEC 0
#endif
#ifndef __INTEL_COMPILER
#pragma GCC diagnostic ignored "-Wold-style-cast"
#endif
using namespace libtest;
struct socket_st {
typedef std::vector< std::pair< int, in_port_t> > socket_port_t;
socket_port_t _pair;
in_port_t last_port;
socket_st():
last_port(0)
{ }
void release(in_port_t _arg)
{
for (socket_port_t::iterator iter= _pair.begin();
iter != _pair.end();
++iter)
{
if ((*iter).second == _arg)
{
shutdown((*iter).first, SHUT_RDWR);
close((*iter).first);
}
}
}
~socket_st()
{
for (socket_port_t::iterator iter= _pair.begin();
iter != _pair.end();
++iter)
{
shutdown((*iter).first, SHUT_RDWR);
close((*iter).first);
}
}
};
static socket_st all_socket_fd;
static in_port_t global_port= 0;
namespace libtest {
in_port_t default_port()
{
if (global_port == 0)
{
global_port= get_free_port();
}
return global_port;
}
void release_port(in_port_t arg)
{
all_socket_fd.release(arg);
}
in_port_t get_free_port()
{
const in_port_t default_port= in_port_t(-1);
int retries= 1024;
in_port_t ret_port;
while (--retries)
{
ret_port= default_port;
int sd;
if ((sd= socket(AF_INET, SOCK_STREAM, 0)) != SOCKET_ERROR)
{
int optval= 1;
if (setsockopt(sd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval)) != SOCKET_ERROR)
{
struct sockaddr_in sin;
sin.sin_port= 0;
sin.sin_addr.s_addr= 0;
sin.sin_addr.s_addr= INADDR_ANY;
sin.sin_family= AF_INET;
int bind_ret;
do
{
if ((bind_ret= bind(sd, (struct sockaddr *)&sin, sizeof(struct sockaddr_in) )) != SOCKET_ERROR)
{
socklen_t addrlen= sizeof(sin);
if (getsockname(sd, (struct sockaddr *)&sin, &addrlen) != -1)
{
ret_port= sin.sin_port;
}
}
else
{
if (errno != EADDRINUSE)
{
Error << strerror(errno);
}
}
if (errno == EADDRINUSE)
{
libtest::dream(2, 0);
}
} while (bind_ret == -1 and errno == EADDRINUSE);
all_socket_fd._pair.push_back(std::make_pair(sd, ret_port));
}
else
{
Error << strerror(errno);
}
}
else
{
Error << strerror(errno);
}
if (ret_port == default_port)
{
Error << "no ret_port set:" << strerror(errno);
}
else if (ret_port > 1024 and ret_port != all_socket_fd.last_port)
{
break;
}
}
// We handle the case where if we max out retries, we still abort.
if (retries == 0)
{
FATAL("No port could be found, exhausted retry");
}
if (ret_port == 0)
{
FATAL("No port could be found");
}
if (ret_port == default_port)
{
FATAL("No port could be found");
}
if (ret_port <= 1024)
{
FATAL("No port could be found, though some where available below or at 1024");
}
all_socket_fd.last_port= ret_port;
release_port(ret_port);
return ret_port;
}
} // namespace libtest
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