572 lines
18 KiB
C
572 lines
18 KiB
C
/*
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* Server-side socket management
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*
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* Copyright (C) 1999 Marcus Meissner, Ove Kåven
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*
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* FIXME: we use read|write access in all cases. Shouldn't we depend that
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* on the access of the current handle?
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*/
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#include "config.h"
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#include <assert.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <errno.h>
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#ifdef HAVE_SYS_ERRNO_H
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# include <sys/errno.h>
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#endif
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#ifdef HAVE_SYS_SOCKET_H
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# include <sys/socket.h>
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#endif
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#include <sys/ioctl.h>
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#ifdef HAVE_SYS_FILIO_H
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# include <sys/filio.h>
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#endif
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#include <time.h>
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#include <unistd.h>
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#include "winerror.h"
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#include "winbase.h"
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#include "winsock2.h"
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#include "process.h"
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#include "handle.h"
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#include "thread.h"
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#include "request.h"
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struct sock
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{
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struct object obj; /* object header */
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unsigned int state; /* status bits */
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unsigned int mask; /* event mask */
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unsigned int hmask; /* held (blocked) events */
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unsigned int pmask; /* pending events */
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struct event *event; /* event object */
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int errors[FD_MAX_EVENTS]; /* event errors */
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};
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static void sock_dump( struct object *obj, int verbose );
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static int sock_signaled( struct object *obj, struct thread *thread );
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static int sock_get_poll_events( struct object *obj );
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static void sock_poll_event( struct object *obj, int event );
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static int sock_get_fd( struct object *obj );
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static void sock_destroy( struct object *obj );
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static int sock_get_error( int err );
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static void sock_set_error(void);
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static const struct object_ops sock_ops =
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{
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sizeof(struct sock), /* size */
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sock_dump, /* dump */
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add_queue, /* add_queue */
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remove_queue, /* remove_queue */
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sock_signaled, /* signaled */
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no_satisfied, /* satisfied */
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sock_get_poll_events, /* get_poll_events */
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sock_poll_event, /* poll_event */
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sock_get_fd, /* get_read_fd */
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sock_get_fd, /* get_write_fd */
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no_flush, /* flush */
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no_get_file_info, /* get_file_info */
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sock_destroy /* destroy */
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};
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static void sock_reselect( struct sock *sock )
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{
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int ev = sock_get_poll_events( &sock->obj );
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struct pollfd pfd;
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if (debug_level)
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fprintf(stderr,"sock_reselect(%d): new mask %x\n", sock->obj.fd, ev);
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if (sock->obj.select == -1) {
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/* previously unconnected socket, is this reselect supposed to connect it? */
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if (!sock->state) return;
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/* ok, it is, attach it to the wineserver's main poll loop */
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add_select_user( &sock->obj );
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}
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/* update condition mask */
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set_select_events( &sock->obj, ev );
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/* check whether condition is satisfied already */
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pfd.fd = sock->obj.fd;
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pfd.events = ev;
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pfd.revents = 0;
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poll( &pfd, 1, 0 );
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if (pfd.revents)
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sock_poll_event( &sock->obj, pfd.revents);
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}
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inline static int sock_error(int s)
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{
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unsigned int optval = 0, optlen;
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optlen = sizeof(optval);
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getsockopt(s, SOL_SOCKET, SO_ERROR, (void *) &optval, &optlen);
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return optval ? sock_get_error(optval) : 0;
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}
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static void sock_poll_event( struct object *obj, int event )
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{
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struct sock *sock = (struct sock *)obj;
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unsigned int emask;
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assert( sock->obj.ops == &sock_ops );
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if (debug_level)
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fprintf(stderr, "socket %d select event: %x\n", sock->obj.fd, event);
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if (sock->state & WS_FD_CONNECT)
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{
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/* connecting */
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if (event & POLLOUT)
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{
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/* we got connected */
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sock->state |= WS_FD_CONNECTED|WS_FD_READ|WS_FD_WRITE;
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sock->state &= ~WS_FD_CONNECT;
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sock->pmask |= FD_CONNECT;
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sock->errors[FD_CONNECT_BIT] = 0;
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if (debug_level)
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fprintf(stderr, "socket %d connection success\n", sock->obj.fd);
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}
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else if (event & (POLLERR|POLLHUP))
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{
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/* we didn't get connected? */
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sock->state &= ~WS_FD_CONNECT;
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sock->pmask |= FD_CONNECT;
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sock->errors[FD_CONNECT_BIT] = sock_error( sock->obj.fd );
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if (debug_level)
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fprintf(stderr, "socket %d connection failure\n", sock->obj.fd);
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}
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} else
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if (sock->state & WS_FD_LISTENING)
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{
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/* listening */
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if (event & POLLIN)
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{
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/* incoming connection */
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sock->pmask |= FD_ACCEPT;
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sock->errors[FD_ACCEPT_BIT] = 0;
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sock->hmask |= FD_ACCEPT;
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}
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else if (event & (POLLERR|POLLHUP))
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{
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/* failed incoming connection? */
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sock->pmask |= FD_ACCEPT;
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sock->errors[FD_ACCEPT_BIT] = sock_error( sock->obj.fd );
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sock->hmask |= FD_ACCEPT;
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}
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} else
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{
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/* normal data flow */
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if (event & POLLIN)
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{
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/* incoming data */
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sock->pmask |= FD_READ;
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sock->hmask |= FD_READ;
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sock->errors[FD_READ_BIT] = 0;
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if (debug_level)
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fprintf(stderr, "socket %d is readable\n", sock->obj.fd );
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}
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if (event & POLLOUT)
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{
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sock->pmask |= FD_WRITE;
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sock->hmask |= FD_WRITE;
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sock->errors[FD_WRITE_BIT] = 0;
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if (debug_level)
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fprintf(stderr, "socket %d is writable\n", sock->obj.fd);
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}
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if (event & POLLPRI)
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{
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sock->pmask |= FD_OOB;
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sock->hmask |= FD_OOB;
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sock->errors[FD_OOB_BIT] = 0;
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if (debug_level)
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fprintf(stderr, "socket %d got OOB data\n", sock->obj.fd);
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}
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if (((event & POLLERR) || ((event & (POLLIN|POLLHUP)) == POLLHUP))
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&& (sock->state & (WS_FD_READ|WS_FD_WRITE))) {
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/* socket closing */
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sock->errors[FD_CLOSE_BIT] = sock_error( sock->obj.fd );
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sock->state &= ~(WS_FD_CONNECTED|WS_FD_READ|WS_FD_WRITE);
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sock->pmask |= FD_CLOSE;
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if (debug_level)
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fprintf(stderr, "socket %d aborted by error %d\n",
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sock->obj.fd, sock->errors[FD_CLOSE_BIT]);
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}
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}
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if (event & (POLLERR|POLLHUP))
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set_select_events( &sock->obj, -1 );
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else
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sock_reselect( sock );
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/* wake up anyone waiting for whatever just happened */
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emask = sock->pmask & sock->mask;
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if (debug_level && emask)
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fprintf(stderr, "socket %d pending events: %x\n", sock->obj.fd, emask);
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if (emask && sock->event) {
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if (debug_level) fprintf(stderr, "signalling event ptr %p\n", sock->event);
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set_event(sock->event);
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}
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/* if anyone is stupid enough to wait on the socket object itself,
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* maybe we should wake them up too, just in case? */
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wake_up( &sock->obj, 0 );
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}
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static void sock_dump( struct object *obj, int verbose )
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{
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struct sock *sock = (struct sock *)obj;
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assert( obj->ops == &sock_ops );
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printf( "Socket fd=%d, state=%x, mask=%x, pending=%x, held=%x\n",
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sock->obj.fd, sock->state,
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sock->mask, sock->pmask, sock->hmask );
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}
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static int sock_signaled( struct object *obj, struct thread *thread )
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{
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struct sock *sock = (struct sock *)obj;
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assert( obj->ops == &sock_ops );
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return check_select_events( sock->obj.fd, sock_get_poll_events( &sock->obj ) );
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}
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static int sock_get_poll_events( struct object *obj )
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{
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struct sock *sock = (struct sock *)obj;
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unsigned int mask = sock->mask & sock->state & ~sock->hmask;
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int ev = 0;
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assert( obj->ops == &sock_ops );
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if (sock->state & WS_FD_CONNECT)
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/* connecting, wait for writable */
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return POLLOUT;
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if (sock->state & WS_FD_LISTENING)
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/* listening, wait for readable */
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return (sock->hmask & FD_ACCEPT) ? 0 : POLLIN;
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if (mask & FD_READ) ev |= POLLIN | POLLPRI;
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if (mask & FD_WRITE) ev |= POLLOUT;
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return ev;
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}
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static int sock_get_fd( struct object *obj )
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{
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struct sock *sock = (struct sock *)obj;
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int fd;
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assert( obj->ops == &sock_ops );
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fd = dup( sock->obj.fd );
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if (fd==-1)
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sock_set_error();
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return fd;
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}
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static void sock_destroy( struct object *obj )
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{
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struct sock *sock = (struct sock *)obj;
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assert( obj->ops == &sock_ops );
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/* FIXME: special socket shutdown stuff? */
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if (sock->event)
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{
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/* if the service thread was waiting for the event object,
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* we should now signal it, to let the service thread
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* object detect that it is now orphaned... */
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if (sock->mask & WS_FD_SERVEVENT)
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set_event( sock->event );
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/* we're through with it */
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release_object( sock->event );
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}
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}
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/* create a new and unconnected socket */
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static struct object *create_socket( int family, int type, int protocol )
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{
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struct sock *sock;
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int sockfd;
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sockfd = socket( family, type, protocol );
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if (debug_level)
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fprintf(stderr,"socket(%d,%d,%d)=%d\n",family,type,protocol,sockfd);
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if (sockfd == -1) {
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sock_set_error();
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return NULL;
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}
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fcntl(sockfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
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if (!(sock = alloc_object( &sock_ops, -1 ))) return NULL;
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sock->obj.fd = sockfd;
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sock->state = (type != SOCK_STREAM) ? (WS_FD_READ|WS_FD_WRITE) : 0;
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sock->mask = 0;
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sock->hmask = 0;
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sock->pmask = 0;
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sock->event = NULL;
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sock_reselect( sock );
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clear_error();
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return &sock->obj;
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}
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/* accept a socket (creates a new fd) */
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static struct object *accept_socket( int handle )
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{
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struct sock *acceptsock;
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struct sock *sock;
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int acceptfd;
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struct sockaddr saddr;
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int slen;
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sock=(struct sock*)get_handle_obj(current->process,handle,
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GENERIC_READ|GENERIC_WRITE|SYNCHRONIZE,&sock_ops);
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if (!sock)
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return NULL;
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/* Try to accept(2). We can't be safe that this an already connected socket
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* or that accept() is allowed on it. In those cases we will get -1/errno
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* return.
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*/
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slen = sizeof(saddr);
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acceptfd = accept(sock->obj.fd,&saddr,&slen);
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if (acceptfd==-1) {
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sock_set_error();
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release_object( sock );
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return NULL;
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}
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if (!(acceptsock = alloc_object( &sock_ops, -1 )))
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{
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release_object( sock );
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return NULL;
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}
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/* newly created socket gets the same properties of the listening socket */
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fcntl(acceptfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
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acceptsock->obj.fd = acceptfd;
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acceptsock->state = WS_FD_CONNECTED|WS_FD_READ|WS_FD_WRITE;
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if (sock->state & WS_FD_NONBLOCKING)
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acceptsock->state |= WS_FD_NONBLOCKING;
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acceptsock->mask = sock->mask;
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acceptsock->hmask = 0;
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acceptsock->pmask = 0;
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acceptsock->event = NULL;
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if (sock->event && !(sock->mask & WS_FD_SERVEVENT))
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acceptsock->event = (struct event *)grab_object( sock->event );
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sock_reselect( acceptsock );
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clear_error();
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sock->pmask &= ~FD_ACCEPT;
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sock->hmask &= ~FD_ACCEPT;
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release_object( sock );
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return &acceptsock->obj;
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}
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/* set the last error depending on errno */
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static int sock_get_error( int err )
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{
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switch (err)
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{
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case EINTR: return WSAEINTR; break;
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case EBADF: return WSAEBADF; break;
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case EPERM:
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case EACCES: return WSAEACCES; break;
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case EFAULT: return WSAEFAULT; break;
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case EINVAL: return WSAEINVAL; break;
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case EMFILE: return WSAEMFILE; break;
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case EWOULDBLOCK: return WSAEWOULDBLOCK; break;
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case EINPROGRESS: return WSAEINPROGRESS; break;
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case EALREADY: return WSAEALREADY; break;
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case ENOTSOCK: return WSAENOTSOCK; break;
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case EDESTADDRREQ: return WSAEDESTADDRREQ; break;
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case EMSGSIZE: return WSAEMSGSIZE; break;
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case EPROTOTYPE: return WSAEPROTOTYPE; break;
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case ENOPROTOOPT: return WSAENOPROTOOPT; break;
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case EPROTONOSUPPORT: return WSAEPROTONOSUPPORT; break;
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case ESOCKTNOSUPPORT: return WSAESOCKTNOSUPPORT; break;
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case EOPNOTSUPP: return WSAEOPNOTSUPP; break;
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case EPFNOSUPPORT: return WSAEPFNOSUPPORT; break;
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case EAFNOSUPPORT: return WSAEAFNOSUPPORT; break;
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case EADDRINUSE: return WSAEADDRINUSE; break;
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case EADDRNOTAVAIL: return WSAEADDRNOTAVAIL; break;
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case ENETDOWN: return WSAENETDOWN; break;
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case ENETUNREACH: return WSAENETUNREACH; break;
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case ENETRESET: return WSAENETRESET; break;
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case ECONNABORTED: return WSAECONNABORTED; break;
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case EPIPE:
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case ECONNRESET: return WSAECONNRESET; break;
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case ENOBUFS: return WSAENOBUFS; break;
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case EISCONN: return WSAEISCONN; break;
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case ENOTCONN: return WSAENOTCONN; break;
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case ESHUTDOWN: return WSAESHUTDOWN; break;
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case ETOOMANYREFS: return WSAETOOMANYREFS; break;
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case ETIMEDOUT: return WSAETIMEDOUT; break;
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case ECONNREFUSED: return WSAECONNREFUSED; break;
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case ELOOP: return WSAELOOP; break;
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case ENAMETOOLONG: return WSAENAMETOOLONG; break;
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case EHOSTDOWN: return WSAEHOSTDOWN; break;
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case EHOSTUNREACH: return WSAEHOSTUNREACH; break;
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case ENOTEMPTY: return WSAENOTEMPTY; break;
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#ifdef EPROCLIM
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case EPROCLIM: return WSAEPROCLIM; break;
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#endif
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#ifdef EUSERS
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case EUSERS: return WSAEUSERS; break;
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#endif
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#ifdef EDQUOT
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case EDQUOT: return WSAEDQUOT; break;
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#endif
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#ifdef ESTALE
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case ESTALE: return WSAESTALE; break;
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#endif
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#ifdef EREMOTE
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case EREMOTE: return WSAEREMOTE; break;
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#endif
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default: errno=err; perror("sock_set_error"); return ERROR_UNKNOWN; break;
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}
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}
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/* set the last error depending on errno */
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static void sock_set_error(void)
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{
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set_error( sock_get_error( errno ) );
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}
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/* create a socket */
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DECL_HANDLER(create_socket)
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{
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struct object *obj;
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int s = -1;
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if ((obj = create_socket( req->family, req->type, req->protocol )) != NULL)
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{
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s = alloc_handle( current->process, obj, req->access, req->inherit );
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release_object( obj );
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}
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req->handle = s;
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}
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/* accept a socket */
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DECL_HANDLER(accept_socket)
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{
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struct object *obj;
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int s = -1;
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if ((obj = accept_socket( req->lhandle )) != NULL)
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{
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s = alloc_handle( current->process, obj, req->access, req->inherit );
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release_object( obj );
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}
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req->handle = s;
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}
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/* set socket event parameters */
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DECL_HANDLER(set_socket_event)
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{
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struct sock *sock;
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struct event *oevent;
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unsigned int omask;
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sock=(struct sock*)get_handle_obj(current->process,req->handle,GENERIC_READ|GENERIC_WRITE|SYNCHRONIZE,&sock_ops);
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if (!sock)
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return;
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oevent = sock->event;
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omask = sock->mask;
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sock->mask = req->mask;
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sock->event = get_event_obj( current->process, req->event, EVENT_MODIFY_STATE );
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if (debug_level && sock->event) fprintf(stderr, "event ptr: %p\n", sock->event);
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sock_reselect( sock );
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if (sock->mask)
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sock->state |= WS_FD_NONBLOCKING;
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/* if a network event is pending, signal the event object
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it is possible that FD_CONNECT or FD_ACCEPT network events has happened
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before a WSAEventSelect() was done on it.
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(when dealing with Asynchronous socket) */
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if (sock->pmask & sock->mask)
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set_event(sock->event);
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if (oevent)
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{
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if ((oevent != sock->event) && (omask & WS_FD_SERVEVENT))
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/* if the service thread was waiting for the old event object,
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* we should now signal it, to let the service thread
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* object detect that it is now orphaned... */
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set_event( oevent );
|
|
/* we're through with it */
|
|
release_object( oevent );
|
|
}
|
|
release_object( &sock->obj );
|
|
}
|
|
|
|
/* get socket event parameters */
|
|
DECL_HANDLER(get_socket_event)
|
|
{
|
|
struct sock *sock;
|
|
size_t size;
|
|
|
|
sock=(struct sock*)get_handle_obj(current->process,req->handle,GENERIC_READ|GENERIC_WRITE|SYNCHRONIZE,&sock_ops);
|
|
if (!sock)
|
|
{
|
|
req->mask = 0;
|
|
req->pmask = 0;
|
|
req->state = 0;
|
|
set_error(WSAENOTSOCK);
|
|
return;
|
|
}
|
|
req->mask = sock->mask;
|
|
req->pmask = sock->pmask;
|
|
req->state = sock->state;
|
|
size = min( get_req_data_size(req), sizeof(sock->errors) );
|
|
memcpy( get_req_data(req), sock->errors, size );
|
|
set_req_data_size( req, size );
|
|
|
|
if (req->service)
|
|
{
|
|
if (req->s_event)
|
|
{
|
|
struct event *sevent = get_event_obj(current->process, req->s_event, 0);
|
|
if (sevent == sock->event)
|
|
req->s_event = 0;
|
|
release_object( sevent );
|
|
}
|
|
if (!req->s_event)
|
|
{
|
|
if (req->c_event)
|
|
{
|
|
struct event *cevent = get_event_obj(current->process, req->c_event, EVENT_MODIFY_STATE);
|
|
reset_event( cevent );
|
|
release_object( cevent );
|
|
}
|
|
sock->pmask = 0;
|
|
sock_reselect( sock );
|
|
}
|
|
else set_error(WSAEINVAL);
|
|
}
|
|
release_object( &sock->obj );
|
|
}
|
|
|
|
/* re-enable pending socket events */
|
|
DECL_HANDLER(enable_socket_event)
|
|
{
|
|
struct sock *sock;
|
|
|
|
sock=(struct sock*)get_handle_obj(current->process,req->handle,GENERIC_READ|GENERIC_WRITE|SYNCHRONIZE,&sock_ops);
|
|
if (!sock)
|
|
return;
|
|
sock->pmask &= ~req->mask; /* is this safe? */
|
|
sock->hmask &= ~req->mask;
|
|
sock->state |= req->sstate;
|
|
sock->state &= ~req->cstate;
|
|
sock_reselect( sock );
|
|
|
|
/* service trigger */
|
|
if (req->mask & WS_FD_SERVEVENT)
|
|
{
|
|
sock->pmask |= WS_FD_SERVEVENT;
|
|
if (sock->event) {
|
|
if (debug_level) fprintf(stderr, "signalling service event ptr %p\n", sock->event);
|
|
set_event(sock->event);
|
|
}
|
|
}
|
|
|
|
release_object( &sock->obj );
|
|
}
|