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/* cygserver_transport_sockets.cc
Copyright 2001, 2002 Red Hat Inc.
Written by Robert Collins <rbtcollins@hotmail.com>
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
/* to allow this to link into cygwin and the .dll, a little magic is needed. */
#ifdef __OUTSIDE_CYGWIN__
#include "woutsup.h"
#else
#include "winsup.h"
#endif
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include "cygwin/cygserver_transport.h"
#include "cygwin/cygserver_transport_sockets.h"
/* to allow this to link into cygwin and the .dll, a little magic is needed. */
#ifndef __OUTSIDE_CYGWIN__
extern "C" int
cygwin_socket (int af, int type, int protocol);
extern "C" int
cygwin_connect (int fd,
const struct sockaddr *name,
int namelen);
extern "C" int
cygwin_accept (int fd, struct sockaddr *peer, int *len);
extern "C" int
cygwin_listen (int fd, int backlog);
extern "C" int
cygwin_bind (int fd, const struct sockaddr *my_addr, int addrlen);
#else
#define cygwin_accept(A,B,C) ::accept (A,B,C)
#define cygwin_socket(A,B,C) ::socket (A,B,C)
#define cygwin_listen(A,B) ::listen (A,B)
#define cygwin_bind(A,B,C) ::bind (A,B,C)
#define cygwin_connect(A,B,C) ::connect (A,B,C)
#endif
transport_layer_sockets::transport_layer_sockets (int newfd)
: fd (newfd)
{
/* This may not be needed in this constructor - it's only used
* when creating a connection via bind or connect
*/
sockdetails.sa_family = AF_UNIX;
strcpy (sockdetails.sa_data, "/tmp/cygdaemo");
sdlen = strlen (sockdetails.sa_data) + sizeof (sockdetails.sa_family);
};
transport_layer_sockets::transport_layer_sockets (): fd (-1)
{
sockdetails.sa_family = AF_UNIX;
strcpy (sockdetails.sa_data, "/tmp/cygdaemo");
sdlen = strlen (sockdetails.sa_data) + sizeof (sockdetails.sa_family);
}
transport_layer_sockets::~transport_layer_sockets ()
{
close ();
}
#ifndef __INSIDE_CYGWIN__
void
transport_layer_sockets::listen ()
{
/* we want a thread pool based approach. */
if ((fd = cygwin_socket (AF_UNIX, SOCK_STREAM,0)) < 0)
system_printf ("Socket not created error %d", errno);
if (cygwin_bind (fd, &sockdetails, sdlen))
system_printf ("Bind doesn't like you. Tsk Tsk. Bind said %d", errno);
if (cygwin_listen (fd, 5) < 0)
system_printf ("And the OS just isn't listening, all it says is %d",
errno);
}
class transport_layer_sockets *
transport_layer_sockets::accept (bool *const recoverable)
{
/* FIXME: check we have listened */
const int accept_fd = cygwin_accept (fd, &sockdetails, &sdlen);
if (accept_fd == -1)
{
system_printf ("Nup, couldn't accept. %d", errno);
switch (errno)
{
case ECONNABORTED:
case EINTR:
case EMFILE:
case ENFILE:
case ENOBUFS:
case ENOMEM:
*recoverable = true;
break;
default:
*recoverable = false;
break;
}
return NULL;
}
return safe_new (transport_layer_sockets, accept_fd);
}
#endif /* !__INSIDE_CYGWIN__ */
void
transport_layer_sockets::close ()
{
/* FIXME - are we open? */
if (fd != -1)
{
::close (fd);
fd = -1;
}
}
ssize_t
transport_layer_sockets::read (void *buf, size_t len)
{
/* FIXME: are we open? */
return ::read (fd, buf, len);
}
ssize_t
transport_layer_sockets::write (void *buf, size_t len)
{
/* FIXME: are we open? */
return ::write (fd, buf, len);
}
bool
transport_layer_sockets::connect ()
{
/* are we already connected? */
if (fd != -1)
return false;
fd = cygwin_socket (AF_UNIX, SOCK_STREAM, 0);
if (cygwin_connect (fd, &sockdetails, sdlen) < 0)
{
debug_printf ("client connect failure %d", errno);
::close (fd);
return false;
}
return true;
}
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