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/*
* Copyright (C) 2001-2004 Peter J Jones (pjones@pmade.org)
* 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. Neither the name of the Author nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR
* 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.
*/
/** @file
* This file contains the implementation of the Netxx::ServerBase class.
**/
// common header
#include "common.h"
// Netxx includes
#include "serverbase.h"
#include "netxx/address.h"
#include "netxx/sockopt.h"
#include "netxx/probeinfo.h"
#include "socket.h"
// standard includes
#include <map>
#include <vector>
#include <algorithm>
#include <functional>
//####################################################################
namespace
{
# ifndef WIN32
struct unlink_functor : public std::unary_function<std::string, void>
{
void operator() (const std::string &file)
{ unlink(file.c_str()); }
};
# endif
}
//####################################################################
Netxx::ServerBase::ServerBase (const Timeout &timeout)
: timeout_(timeout), sockets_(0), sockets_size_(0)
{ /* must not call bind_to from here */ }
//####################################################################
Netxx::ServerBase::~ServerBase (void)
{
# ifndef WIN32
if (sockets_ && !files_.empty()) {
std::for_each(sockets_, sockets_ + sockets_size_, std::mem_fun_ref(&Socket::close));
std::for_each(files_.begin(), files_.end(), unlink_functor());
}
# endif
if (sockets_) delete [] sockets_;
}
//####################################################################
void Netxx::ServerBase::bind_to(const Address &addr, bool stream_server)
{
if (sockets_) throw Exception("bug in Netxx, ServerBase::sockets_ != 0");
/*
* it is safe to allocate this block of memory because the destructor
* will free it even if this function dies with an exception.
*/
sockets_size_ = addr.size();
sockets_ = new Socket[sockets_size_];
/*
* now that we have an array of sockets we need to walk through each one
* and set it up. We will use a temporay socket and make it call
* socket() for us. Then we can set the reuse address socket option and
* call bind.
*/
Address::const_iterator addr_it=addr.begin(), addr_end=addr.end();
for (size_type current_socket=0; addr_it != addr_end; ++addr_it, ++current_socket) {
const sockaddr *sa = static_cast<const sockaddr*>(addr_it->get_sa());
size_type sa_size = addr_it->get_sa_size();
Socket::Type stype;
switch (sa->sa_family) {
case AF_INET:
stype = stream_server ? Socket::TCP : Socket::UDP;
break;
# ifndef NETXX_NO_INET6
case AF_INET6:
stype = stream_server ? Socket::TCP6 : Socket::UDP6;
break;
# endif
# ifndef WIN32
case AF_LOCAL:
stype = stream_server ? Socket::LOCALSTREAM : Socket::LOCALDGRAM;
break;
# endif
default:
stype = stream_server ? Socket::TCP : Socket::UDP;
break;
}
Socket tmp_socket(stype);
socket_type socketfd = tmp_socket.get_socketfd();
tmp_socket.swap(sockets_[current_socket]);
SockOpt socket_opt(socketfd);
socket_opt.set_reuse_address();
# ifndef NETXX_NO_INET6
if (sa->sa_family == AF_INET6)
socket_opt.set_ipv6_listen_for_v6_only();
# endif
if (bind(socketfd, sa, sa_size) != 0) {
std::string error("bind(2) error: ");
error += Netxx::str_error(Netxx::get_last_error());
throw NetworkException(error);
}
sockets_map_[socketfd] = &(sockets_[current_socket]);
pi_.add_socket(socketfd);
# ifndef WIN32
/*
* check to see if we need to record a filename. we would need
* to record a filename for local domain sockets in order to
* remove the file when the server is done with it.
*
* also take this time to set the mode for the socket file to
* something sane. this may be a bad assumption here but I think
* this is a good value for a domain socket.
*/
if (sa->sa_family == AF_LOCAL) {
const sockaddr_un *saun = reinterpret_cast<const sockaddr_un*>(sa);
/*
* This will make a local domain socket more like a real
* socket since anyone with local file system access can
* connect to it.
*/
chmod(saun->sun_path, 0666);
if (saun->sun_path[0] == '/') {
files_.push_back(saun->sun_path);
} else {
char buffer[MAXPATHLEN];
if (getcwd(buffer, sizeof(buffer))) {
std::string fullpath = buffer; fullpath += '/'; fullpath += saun->sun_path;
files_.push_back(fullpath);
} else {
files_.push_back(saun->sun_path);
}
}
}
# endif
}
probe_.add(*this);
}
//####################################################################
void Netxx::ServerBase::get_socket_list (Socket *&sockets, size_type &size)
{
sockets = sockets_;
size = sockets_size_;
}
//####################################################################
Netxx::Socket* Netxx::ServerBase::get_readable_socket (void)
{
Probe::result_type rt = probe_.ready(timeout_, Probe::ready_read);
if (rt.first == -1) return 0;
return sockets_map_[rt.first];
}
//####################################################################
void Netxx::ServerBase::set_timeout (const Timeout &timeout)
{
timeout_ = timeout;
}
//####################################################################
const Netxx::Timeout& Netxx::ServerBase::get_timeout (void) const
{
return timeout_;
}
//####################################################################
const Netxx::ProbeInfo* Netxx::ServerBase::get_probe_info (void) const
{
return &pi_;
}
//####################################################################
bool Netxx::ServerBase::has_socket (socket_type socketfd) const
{
return sockets_map_.find(socketfd) != sockets_map_.end();
}
//####################################################################
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