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Sweden-Number/server/sock.c

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/*
* Server-side socket management
*
* Copyright (C) 1999 Marcus Meissner, Ove Kåven
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* FIXME: we use read|write access in all cases. Shouldn't we depend that
* on the access of the current handle?
*/
#include "config.h"
#include <assert.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#ifdef HAVE_SYS_ERRNO_H
# include <sys/errno.h>
#endif
#include <sys/time.h>
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_SYS_FILIO_H
# include <sys/filio.h>
#endif
#include <time.h>
#include <unistd.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winternl.h"
#include "process.h"
#include "file.h"
#include "handle.h"
#include "thread.h"
#include "request.h"
#include "user.h"
/* To avoid conflicts with the Unix socket headers. Plus we only need a few
* macros anyway.
*/
#define USE_WS_PREFIX
#include "winsock2.h"
struct sock
{
struct object obj; /* object header */
struct fd *fd; /* socket file descriptor */
unsigned int state; /* status bits */
unsigned int mask; /* event mask */
unsigned int hmask; /* held (blocked) events */
unsigned int pmask; /* pending events */
unsigned int flags; /* socket flags */
int polling; /* is socket being polled? */
unsigned short type; /* socket type */
unsigned short family; /* socket family */
struct event *event; /* event object */
user_handle_t window; /* window to send the message to */
unsigned int message; /* message to send */
obj_handle_t wparam; /* message wparam (socket handle) */
int errors[FD_MAX_EVENTS]; /* event errors */
struct sock *deferred; /* socket that waits for a deferred accept */
struct list read_q; /* queue for asynchronous reads */
struct list write_q; /* queue for asynchronous writes */
};
static void sock_dump( struct object *obj, int verbose );
static int sock_signaled( struct object *obj, struct thread *thread );
static struct fd *sock_get_fd( struct object *obj );
static unsigned int sock_map_access( struct object *obj, unsigned int access );
static void sock_destroy( struct object *obj );
static int sock_get_poll_events( struct fd *fd );
static void sock_poll_event( struct fd *fd, int event );
static int sock_get_info( struct fd *fd );
static void sock_queue_async( struct fd *fd, void *apc, void *user, void *iosb, int type, int count );
static void sock_cancel_async( struct fd *fd );
static int sock_get_error( int err );
static void sock_set_error(void);
static const struct object_ops sock_ops =
{
sizeof(struct sock), /* size */
sock_dump, /* dump */
add_queue, /* add_queue */
remove_queue, /* remove_queue */
sock_signaled, /* signaled */
no_satisfied, /* satisfied */
no_signal, /* signal */
sock_get_fd, /* get_fd */
sock_map_access, /* map_access */
no_lookup_name, /* lookup_name */
no_close_handle, /* close_handle */
sock_destroy /* destroy */
};
static const struct fd_ops sock_fd_ops =
{
sock_get_poll_events, /* get_poll_events */
sock_poll_event, /* poll_event */
no_flush, /* flush */
sock_get_info, /* get_file_info */
sock_queue_async, /* queue_async */
sock_cancel_async /* cancel_async */
};
/* Permutation of 0..FD_MAX_EVENTS - 1 representing the order in which
* we post messages if there are multiple events. Used to send
* messages. The problem is if there is both a FD_CONNECT event and,
* say, an FD_READ event available on the same socket, we want to
* notify the app of the connect event first. Otherwise it may
* discard the read event because it thinks it hasn't connected yet.
*/
static const int event_bitorder[FD_MAX_EVENTS] =
{
FD_CONNECT_BIT,
FD_ACCEPT_BIT,
FD_OOB_BIT,
FD_WRITE_BIT,
FD_READ_BIT,
FD_CLOSE_BIT,
6, 7, 8, 9 /* leftovers */
};
/* Flags that make sense only for SOCK_STREAM sockets */
#define STREAM_FLAG_MASK ((unsigned int) (FD_CONNECT | FD_ACCEPT | FD_WINE_LISTENING | FD_WINE_CONNECTED))
typedef enum {
SOCK_SHUTDOWN_ERROR = -1,
SOCK_SHUTDOWN_EOF = 0,
SOCK_SHUTDOWN_POLLHUP = 1
} sock_shutdown_t;
static sock_shutdown_t sock_shutdown_type = SOCK_SHUTDOWN_ERROR;
static sock_shutdown_t sock_check_pollhup(void)
{
sock_shutdown_t ret = SOCK_SHUTDOWN_ERROR;
int fd[2], n;
struct pollfd pfd;
char dummy;
if ( socketpair( AF_UNIX, SOCK_STREAM, 0, fd ) ) goto out;
if ( shutdown( fd[0], 1 ) ) goto out;
pfd.fd = fd[1];
pfd.events = POLLIN;
pfd.revents = 0;
n = poll( &pfd, 1, 0 );
if ( n != 1 ) goto out; /* error or timeout */
if ( pfd.revents & POLLHUP )
ret = SOCK_SHUTDOWN_POLLHUP;
else if ( pfd.revents & POLLIN &&
read( fd[1], &dummy, 1 ) == 0 )
ret = SOCK_SHUTDOWN_EOF;
out:
close( fd[0] );
close( fd[1] );
return ret;
}
void sock_init(void)
{
sock_shutdown_type = sock_check_pollhup();
switch ( sock_shutdown_type )
{
case SOCK_SHUTDOWN_EOF:
if (debug_level) fprintf( stderr, "sock_init: shutdown() causes EOF\n" );
break;
case SOCK_SHUTDOWN_POLLHUP:
if (debug_level) fprintf( stderr, "sock_init: shutdown() causes POLLHUP\n" );
break;
default:
fprintf( stderr, "sock_init: ERROR in sock_check_pollhup()\n" );
sock_shutdown_type = SOCK_SHUTDOWN_EOF;
}
}
static int sock_reselect( struct sock *sock )
{
int ev = sock_get_poll_events( sock->fd );
if (debug_level)
fprintf(stderr,"sock_reselect(%p): new mask %x\n", sock, ev);
if (!sock->polling) /* FIXME: should find a better way to do this */
{
/* previously unconnected socket, is this reselect supposed to connect it? */
if (!(sock->state & ~FD_WINE_NONBLOCKING)) return 0;
/* ok, it is, attach it to the wineserver's main poll loop */
sock->polling = 1;
}
/* update condition mask */
set_fd_events( sock->fd, ev );
return ev;
}
/* After POLLHUP is received, the socket will no longer be in the main select loop.
This function is used to signal pending events nevertheless */
static void sock_try_event( struct sock *sock, int event )
{
event = check_fd_events( sock->fd, event );
if (event)
{
if ( debug_level ) fprintf( stderr, "sock_try_event: %x\n", event );
sock_poll_event( sock->fd, event );
}
}
/* wake anybody waiting on the socket event or send the associated message */
static void sock_wake_up( struct sock *sock, int pollev )
{
unsigned int events = sock->pmask & sock->mask;
int i;
int async_active = 0;
if ( sock->flags & WSA_FLAG_OVERLAPPED )
{
if ( pollev & (POLLIN|POLLPRI) && !list_empty( &sock->read_q ))
{
if (debug_level) fprintf( stderr, "activating read queue for socket %p\n", sock );
async_terminate_head( &sock->read_q, STATUS_ALERTED );
async_active = 1;
}
if ( pollev & POLLOUT && !list_empty( &sock->write_q ))
{
if (debug_level) fprintf( stderr, "activating write queue for socket %p\n", sock );
async_terminate_head( &sock->write_q, STATUS_ALERTED );
async_active = 1;
}
}
/* Do not signal events if there are still pending asynchronous IO requests */
/* We need this to delay FD_CLOSE events until all pending overlapped requests are processed */
if ( !events || async_active ) return;
if (sock->event)
{
if (debug_level) fprintf(stderr, "signalling events %x ptr %p\n", events, sock->event );
set_event( sock->event );
}
if (sock->window)
{
if (debug_level) fprintf(stderr, "signalling events %x win %p\n", events, sock->window );
for (i = 0; i < FD_MAX_EVENTS; i++)
{
int event = event_bitorder[i];
if (sock->pmask & (1 << event))
{
unsigned int lparam = (1 << event) | (sock->errors[event] << 16);
post_message( sock->window, sock->message, (unsigned int)sock->wparam, lparam );
}
}
sock->pmask = 0;
sock_reselect( sock );
}
}
inline static int sock_error( struct fd *fd )
{
unsigned int optval = 0, optlen;
optlen = sizeof(optval);
getsockopt( get_unix_fd(fd), SOL_SOCKET, SO_ERROR, (void *) &optval, &optlen);
return optval ? sock_get_error(optval) : 0;
}
static void sock_poll_event( struct fd *fd, int event )
{
struct sock *sock = get_fd_user( fd );
int hangup_seen = 0;
assert( sock->obj.ops == &sock_ops );
if (debug_level)
fprintf(stderr, "socket %p select event: %x\n", sock, event);
if (sock->state & FD_CONNECT)
{
/* connecting */
if (event & POLLOUT)
{
/* we got connected */
sock->state |= FD_WINE_CONNECTED|FD_READ|FD_WRITE;
sock->state &= ~FD_CONNECT;
sock->pmask |= FD_CONNECT;
sock->errors[FD_CONNECT_BIT] = 0;
if (debug_level)
fprintf(stderr, "socket %p connection success\n", sock);
}
else if (event & (POLLERR|POLLHUP))
{
/* we didn't get connected? */
sock->state &= ~FD_CONNECT;
sock->pmask |= FD_CONNECT;
sock->errors[FD_CONNECT_BIT] = sock_error( fd );
if (debug_level)
fprintf(stderr, "socket %p connection failure\n", sock);
}
}
else if (sock->state & FD_WINE_LISTENING)
{
/* listening */
if (event & POLLIN)
{
/* incoming connection */
sock->pmask |= FD_ACCEPT;
sock->errors[FD_ACCEPT_BIT] = 0;
sock->hmask |= FD_ACCEPT;
}
else if (event & (POLLERR|POLLHUP))
{
/* failed incoming connection? */
sock->pmask |= FD_ACCEPT;
sock->errors[FD_ACCEPT_BIT] = sock_error( fd );
sock->hmask |= FD_ACCEPT;
}
}
else
{
/* normal data flow */
if ( sock->type == SOCK_STREAM && ( event & POLLIN ) )
{
char dummy;
int nr;
/* Linux 2.4 doesn't report POLLHUP if only one side of the socket
* has been closed, so we need to check for it explicitly here */
nr = recv( get_unix_fd( fd ), &dummy, 1, MSG_PEEK );
if ( nr > 0 )
{
/* incoming data */
sock->pmask |= FD_READ;
sock->hmask |= (FD_READ|FD_CLOSE);
sock->errors[FD_READ_BIT] = 0;
if (debug_level)
fprintf(stderr, "socket %p is readable\n", sock );
}
else if ( nr == 0 )
hangup_seen = 1;
else
{
/* EAGAIN can happen if an async recv() falls between the server's poll()
call and the invocation of this routine */
if ( errno == EAGAIN )
event &= ~POLLIN;
else
{
if ( debug_level )
fprintf( stderr, "recv error on socket %p: %d\n", sock, errno );
event = POLLERR;
}
}
}
else if ( sock_shutdown_type == SOCK_SHUTDOWN_POLLHUP && (event & POLLHUP) )
{
hangup_seen = 1;
}
else if ( event & POLLIN ) /* POLLIN for non-stream socket */
{
sock->pmask |= FD_READ;
sock->hmask |= (FD_READ|FD_CLOSE);
sock->errors[FD_READ_BIT] = 0;
if (debug_level)
fprintf(stderr, "socket %p is readable\n", sock );
}
if (event & POLLOUT)
{
sock->pmask |= FD_WRITE;
sock->hmask |= FD_WRITE;
sock->errors[FD_WRITE_BIT] = 0;
if (debug_level)
fprintf(stderr, "socket %p is writable\n", sock);
}
if (event & POLLPRI)
{
sock->pmask |= FD_OOB;
sock->hmask |= FD_OOB;
sock->errors[FD_OOB_BIT] = 0;
if (debug_level)
fprintf(stderr, "socket %p got OOB data\n", sock);
}
/* According to WS2 specs, FD_CLOSE is only delivered when there is
no more data to be read (i.e. hangup_seen = 1) */
else if ( hangup_seen && (sock->state & (FD_READ|FD_WRITE) ))
{
sock->errors[FD_CLOSE_BIT] = sock_error( fd );
if ( (event & POLLERR) || ( sock_shutdown_type == SOCK_SHUTDOWN_EOF && (event & POLLHUP) ))
sock->state &= ~FD_WRITE;
sock->pmask |= FD_CLOSE;
sock->hmask |= FD_CLOSE;
if (debug_level)
fprintf(stderr, "socket %p aborted by error %d, event: %x - removing from select loop\n",
sock, sock->errors[FD_CLOSE_BIT], event);
}
}
if ( sock->pmask & FD_CLOSE || event & (POLLERR|POLLHUP) )
{
if ( debug_level )
fprintf( stderr, "removing socket %p from select loop\n", sock );
set_fd_events( sock->fd, -1 );
}
else
sock_reselect( sock );
/* wake up anyone waiting for whatever just happened */
if ( sock->pmask & sock->mask || sock->flags & WSA_FLAG_OVERLAPPED ) sock_wake_up( sock, event );
/* if anyone is stupid enough to wait on the socket object itself,
* maybe we should wake them up too, just in case? */
wake_up( &sock->obj, 0 );
}
static void sock_dump( struct object *obj, int verbose )
{
struct sock *sock = (struct sock *)obj;
assert( obj->ops == &sock_ops );
printf( "Socket fd=%p, state=%x, mask=%x, pending=%x, held=%x\n",
sock->fd, sock->state,
sock->mask, sock->pmask, sock->hmask );
}
static int sock_signaled( struct object *obj, struct thread *thread )
{
struct sock *sock = (struct sock *)obj;
assert( obj->ops == &sock_ops );
return check_fd_events( sock->fd, sock_get_poll_events( sock->fd ) ) != 0;
}
static unsigned int sock_map_access( struct object *obj, unsigned int access )
{
if (access & GENERIC_READ) access |= FILE_GENERIC_READ;
if (access & GENERIC_WRITE) access |= FILE_GENERIC_WRITE;
if (access & GENERIC_EXECUTE) access |= FILE_GENERIC_EXECUTE;
if (access & GENERIC_ALL) access |= FILE_ALL_ACCESS;
return access & ~(GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE | GENERIC_ALL);
}
static int sock_get_poll_events( struct fd *fd )
{
struct sock *sock = get_fd_user( fd );
unsigned int mask = sock->mask & sock->state & ~sock->hmask;
int ev = 0;
assert( sock->obj.ops == &sock_ops );
if (sock->state & FD_CONNECT)
/* connecting, wait for writable */
return POLLOUT;
if (sock->state & FD_WINE_LISTENING)
/* listening, wait for readable */
return (sock->hmask & FD_ACCEPT) ? 0 : POLLIN;
if (mask & (FD_READ) || (sock->flags & WSA_FLAG_OVERLAPPED && !list_empty( &sock->read_q )))
ev |= POLLIN | POLLPRI;
if (mask & FD_WRITE || (sock->flags & WSA_FLAG_OVERLAPPED && !list_empty( &sock->write_q )))
ev |= POLLOUT;
/* We use POLLIN with 0 bytes recv() as FD_CLOSE indication for stream sockets. */
if ( sock->type == SOCK_STREAM && ( sock->mask & ~sock->hmask & FD_CLOSE) )
ev |= POLLIN;
return ev;
}
static int sock_get_info( struct fd *fd )
{
int flags = FD_FLAG_AVAILABLE;
struct sock *sock = get_fd_user( fd );
assert( sock->obj.ops == &sock_ops );
if (sock->flags & WSA_FLAG_OVERLAPPED) flags |= FD_FLAG_OVERLAPPED;
if ( sock->type != SOCK_STREAM || sock->state & FD_WINE_CONNECTED )
{
if ( !(sock->state & FD_READ ) ) flags |= FD_FLAG_RECV_SHUTDOWN;
if ( !(sock->state & FD_WRITE ) ) flags |= FD_FLAG_SEND_SHUTDOWN;
}
return flags;
}
static void sock_queue_async( struct fd *fd, void *apc, void *user, void *iosb,
int type, int count )
{
struct sock *sock = get_fd_user( fd );
struct list *queue;
int pollev;
assert( sock->obj.ops == &sock_ops );
if ( !(sock->flags & WSA_FLAG_OVERLAPPED) )
{
set_error( STATUS_INVALID_HANDLE );
return;
}
switch (type)
{
case ASYNC_TYPE_READ:
queue = &sock->read_q;
sock->hmask &= ~FD_CLOSE;
break;
case ASYNC_TYPE_WRITE:
queue = &sock->write_q;
break;
default:
set_error( STATUS_INVALID_PARAMETER );
return;
}
if ( ( !( sock->state & FD_READ ) && type == ASYNC_TYPE_READ ) ||
( !( sock->state & FD_WRITE ) && type == ASYNC_TYPE_WRITE ) )
{
set_error( STATUS_PIPE_DISCONNECTED );
}
else
{
if (!create_async( current, NULL, queue, apc, user, iosb ))
return;
}
pollev = sock_reselect( sock );
if ( pollev ) sock_try_event( sock, pollev );
}
static void sock_cancel_async( struct fd *fd )
{
struct sock *sock = get_fd_user( fd );
assert( sock->obj.ops == &sock_ops );
async_terminate_queue( &sock->read_q, STATUS_CANCELLED );
async_terminate_queue( &sock->write_q, STATUS_CANCELLED );
}
static struct fd *sock_get_fd( struct object *obj )
{
struct sock *sock = (struct sock *)obj;
return (struct fd *)grab_object( sock->fd );
}
static void sock_destroy( struct object *obj )
{
struct sock *sock = (struct sock *)obj;
assert( obj->ops == &sock_ops );
/* FIXME: special socket shutdown stuff? */
if ( sock->deferred )
release_object( sock->deferred );
if ( sock->flags & WSA_FLAG_OVERLAPPED )
{
async_terminate_queue( &sock->read_q, STATUS_CANCELLED );
async_terminate_queue( &sock->write_q, STATUS_CANCELLED );
}
if (sock->event) release_object( sock->event );
if (sock->fd) release_object( sock->fd );
}
/* create a new and unconnected socket */
static struct object *create_socket( int family, int type, int protocol, unsigned int flags )
{
struct sock *sock;
int sockfd;
sockfd = socket( family, type, protocol );
if (debug_level)
fprintf(stderr,"socket(%d,%d,%d)=%d\n",family,type,protocol,sockfd);
if (sockfd == -1)
{
sock_set_error();
return NULL;
}
fcntl(sockfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
if (!(sock = alloc_object( &sock_ops )))
{
close( sockfd );
return NULL;
}
sock->state = (type != SOCK_STREAM) ? (FD_READ|FD_WRITE) : 0;
sock->mask = 0;
sock->hmask = 0;
sock->pmask = 0;
sock->polling = 0;
sock->flags = flags;
sock->type = type;
sock->family = family;
sock->event = NULL;
sock->window = 0;
sock->message = 0;
sock->wparam = 0;
sock->deferred = NULL;
if (!(sock->fd = create_anonymous_fd( &sock_fd_ops, sockfd, &sock->obj )))
{
release_object( sock );
return NULL;
}
list_init( &sock->read_q );
list_init( &sock->write_q );
sock_reselect( sock );
clear_error();
return &sock->obj;
}
/* accept a socket (creates a new fd) */
static struct sock *accept_socket( obj_handle_t handle )
{
struct sock *acceptsock;
struct sock *sock;
int acceptfd;
struct sockaddr saddr;
sock = (struct sock *)get_handle_obj( current->process, handle, FILE_READ_DATA, &sock_ops );
if (!sock)
return NULL;
if ( sock->deferred )
{
acceptsock = sock->deferred;
sock->deferred = NULL;
}
else
{
/* Try to accept(2). We can't be safe that this an already connected socket
* or that accept() is allowed on it. In those cases we will get -1/errno
* return.
*/
unsigned int slen = sizeof(saddr);
acceptfd = accept( get_unix_fd(sock->fd), &saddr, &slen);
if (acceptfd==-1)
{
sock_set_error();
release_object( sock );
return NULL;
}
if (!(acceptsock = alloc_object( &sock_ops )))
{
close( acceptfd );
release_object( sock );
return NULL;
}
/* newly created socket gets the same properties of the listening socket */
fcntl(acceptfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
acceptsock->state = FD_WINE_CONNECTED|FD_READ|FD_WRITE;
if (sock->state & FD_WINE_NONBLOCKING)
acceptsock->state |= FD_WINE_NONBLOCKING;
acceptsock->mask = sock->mask;
acceptsock->hmask = 0;
acceptsock->pmask = 0;
acceptsock->polling = 0;
acceptsock->type = sock->type;
acceptsock->family = sock->family;
acceptsock->event = NULL;
acceptsock->window = sock->window;
acceptsock->message = sock->message;
acceptsock->wparam = 0;
if (sock->event) acceptsock->event = (struct event *)grab_object( sock->event );
acceptsock->flags = sock->flags;
acceptsock->deferred = NULL;
if (!(acceptsock->fd = create_anonymous_fd( &sock_fd_ops, acceptfd, &acceptsock->obj )))
{
release_object( acceptsock );
release_object( sock );
return NULL;
}
list_init( &acceptsock->read_q );
list_init( &acceptsock->write_q );
}
clear_error();
sock->pmask &= ~FD_ACCEPT;
sock->hmask &= ~FD_ACCEPT;
sock_reselect( sock );
release_object( sock );
return acceptsock;
}
/* set the last error depending on errno */
static int sock_get_error( int err )
{
switch (err)
{
case EINTR: return WSAEINTR;
case EBADF: return WSAEBADF;
case EPERM:
case EACCES: return WSAEACCES;
case EFAULT: return WSAEFAULT;
case EINVAL: return WSAEINVAL;
case EMFILE: return WSAEMFILE;
case EWOULDBLOCK: return WSAEWOULDBLOCK;
case EINPROGRESS: return WSAEINPROGRESS;
case EALREADY: return WSAEALREADY;
case ENOTSOCK: return WSAENOTSOCK;
case EDESTADDRREQ: return WSAEDESTADDRREQ;
case EMSGSIZE: return WSAEMSGSIZE;
case EPROTOTYPE: return WSAEPROTOTYPE;
case ENOPROTOOPT: return WSAENOPROTOOPT;
case EPROTONOSUPPORT: return WSAEPROTONOSUPPORT;
case ESOCKTNOSUPPORT: return WSAESOCKTNOSUPPORT;
case EOPNOTSUPP: return WSAEOPNOTSUPP;
case EPFNOSUPPORT: return WSAEPFNOSUPPORT;
case EAFNOSUPPORT: return WSAEAFNOSUPPORT;
case EADDRINUSE: return WSAEADDRINUSE;
case EADDRNOTAVAIL: return WSAEADDRNOTAVAIL;
case ENETDOWN: return WSAENETDOWN;
case ENETUNREACH: return WSAENETUNREACH;
case ENETRESET: return WSAENETRESET;
case ECONNABORTED: return WSAECONNABORTED;
case EPIPE:
case ECONNRESET: return WSAECONNRESET;
case ENOBUFS: return WSAENOBUFS;
case EISCONN: return WSAEISCONN;
case ENOTCONN: return WSAENOTCONN;
case ESHUTDOWN: return WSAESHUTDOWN;
case ETOOMANYREFS: return WSAETOOMANYREFS;
case ETIMEDOUT: return WSAETIMEDOUT;
case ECONNREFUSED: return WSAECONNREFUSED;
case ELOOP: return WSAELOOP;
case ENAMETOOLONG: return WSAENAMETOOLONG;
case EHOSTDOWN: return WSAEHOSTDOWN;
case EHOSTUNREACH: return WSAEHOSTUNREACH;
case ENOTEMPTY: return WSAENOTEMPTY;
#ifdef EPROCLIM
case EPROCLIM: return WSAEPROCLIM;
#endif
#ifdef EUSERS
case EUSERS: return WSAEUSERS;
#endif
#ifdef EDQUOT
case EDQUOT: return WSAEDQUOT;
#endif
#ifdef ESTALE
case ESTALE: return WSAESTALE;
#endif
#ifdef EREMOTE
case EREMOTE: return WSAEREMOTE;
#endif
default: errno=err; perror("sock_set_error"); return WSAEFAULT;
}
}
/* set the last error depending on errno */
static void sock_set_error(void)
{
set_error( sock_get_error( errno ) );
}
/* create a socket */
DECL_HANDLER(create_socket)
{
struct object *obj;
reply->handle = 0;
if ((obj = create_socket( req->family, req->type, req->protocol, req->flags )) != NULL)
{
reply->handle = alloc_handle( current->process, obj, req->access, req->attributes );
release_object( obj );
}
}
/* accept a socket */
DECL_HANDLER(accept_socket)
{
struct sock *sock;
reply->handle = 0;
if ((sock = accept_socket( req->lhandle )) != NULL)
{
reply->handle = alloc_handle( current->process, &sock->obj, req->access, req->attributes );
sock->wparam = reply->handle; /* wparam for message is the socket handle */
sock_reselect( sock );
release_object( &sock->obj );
}
}
/* set socket event parameters */
DECL_HANDLER(set_socket_event)
{
struct sock *sock;
struct event *old_event;
int pollev;
if (!(sock = (struct sock *)get_handle_obj( current->process, req->handle,
FILE_WRITE_ATTRIBUTES, &sock_ops))) return;
old_event = sock->event;
sock->mask = req->mask;
sock->event = NULL;
sock->window = req->window;
sock->message = req->msg;
sock->wparam = req->handle; /* wparam is the socket handle */
if (req->event) sock->event = get_event_obj( current->process, req->event, EVENT_MODIFY_STATE );
if (debug_level && sock->event) fprintf(stderr, "event ptr: %p\n", sock->event);
pollev = sock_reselect( sock );
if ( pollev ) sock_try_event( sock, pollev );
if (sock->mask)
sock->state |= FD_WINE_NONBLOCKING;
/* if a network event is pending, signal the event object
it is possible that FD_CONNECT or FD_ACCEPT network events has happened
before a WSAEventSelect() was done on it.
(when dealing with Asynchronous socket) */
if (sock->pmask & sock->mask) sock_wake_up( sock, pollev );
if (old_event) release_object( old_event ); /* we're through with it */
release_object( &sock->obj );
}
/* get socket event parameters */
DECL_HANDLER(get_socket_event)
{
struct sock *sock;
sock = (struct sock *)get_handle_obj( current->process, req->handle, FILE_READ_ATTRIBUTES, &sock_ops );
if (!sock)
{
reply->mask = 0;
reply->pmask = 0;
reply->state = 0;
set_error( WSAENOTSOCK );
return;
}
reply->mask = sock->mask;
reply->pmask = sock->pmask;
reply->state = sock->state;
set_reply_data( sock->errors, min( get_reply_max_size(), sizeof(sock->errors) ));
if (req->service)
{
if (req->c_event)
{
struct event *cevent = get_event_obj( current->process, req->c_event,
EVENT_MODIFY_STATE );
if (cevent)
{
reset_event( cevent );
release_object( cevent );
}
}
sock->pmask = 0;
sock_reselect( sock );
}
release_object( &sock->obj );
}
/* re-enable pending socket events */
DECL_HANDLER(enable_socket_event)
{
struct sock *sock;
int pollev;
if (!(sock = (struct sock*)get_handle_obj( current->process, req->handle,
FILE_WRITE_ATTRIBUTES, &sock_ops)))
return;
sock->pmask &= ~req->mask; /* is this safe? */
sock->hmask &= ~req->mask;
if ( req->mask & FD_READ )
sock->hmask &= ~FD_CLOSE;
sock->state |= req->sstate;
sock->state &= ~req->cstate;
if ( sock->type != SOCK_STREAM ) sock->state &= ~STREAM_FLAG_MASK;
pollev = sock_reselect( sock );
if ( pollev ) sock_try_event( sock, pollev );
release_object( &sock->obj );
}
DECL_HANDLER(set_socket_deferred)
{
struct sock *sock, *acceptsock;
sock=(struct sock *)get_handle_obj( current->process, req->handle, FILE_WRITE_ATTRIBUTES, &sock_ops );
if ( !sock )
{
set_error( WSAENOTSOCK );
return;
}
acceptsock = (struct sock *)get_handle_obj( current->process, req->deferred, 0, &sock_ops );
if ( !acceptsock )
{
release_object( sock );
set_error( WSAENOTSOCK );
return;
}
sock->deferred = acceptsock;
release_object( sock );
}
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