/* * 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 #include #include #include #include #include #include #ifdef HAVE_NETINET_IN_H # include #endif #ifdef HAVE_POLL_H # include #endif #include #include #ifdef HAVE_SYS_SOCKET_H # include #endif #ifdef HAVE_SYS_IOCTL_H #include #endif #ifdef HAVE_SYS_FILIO_H # include #endif #include #include #include #ifdef HAVE_LINUX_RTNETLINK_H # include #endif #ifdef HAVE_NETIPX_IPX_H # include #elif defined(HAVE_LINUX_IPX_H) # ifdef HAVE_ASM_TYPES_H # include # endif # ifdef HAVE_LINUX_TYPES_H # include # endif # include #endif #if defined(SOL_IPX) || defined(SO_DEFAULT_HEADERS) # define HAS_IPX #endif #ifdef HAVE_LINUX_IRDA_H # ifdef HAVE_LINUX_TYPES_H # include # endif # include # define HAS_IRDA #endif #include "ntstatus.h" #define WIN32_NO_STATUS #include "windef.h" #include "winternl.h" #include "winerror.h" #define USE_WS_PREFIX #include "winsock2.h" #include "ws2tcpip.h" #include "wsipx.h" #include "af_irda.h" #include "wine/afd.h" #include "process.h" #include "file.h" #include "handle.h" #include "thread.h" #include "request.h" #include "user.h" struct accept_req { struct list entry; struct async *async; struct iosb *iosb; struct sock *sock, *acceptsock; int accepted; unsigned int recv_len, local_len; }; 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 proto; /* socket protocol */ 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) */ unsigned int errors[FD_MAX_EVENTS]; /* event errors */ timeout_t connect_time;/* time the socket was connected */ struct sock *deferred; /* socket that waits for a deferred accept */ struct async_queue read_q; /* queue for asynchronous reads */ struct async_queue write_q; /* queue for asynchronous writes */ struct async_queue ifchange_q; /* queue for interface change notifications */ struct async_queue accept_q; /* queue for asynchronous accepts */ struct object *ifchange_obj; /* the interface change notification object */ struct list ifchange_entry; /* entry in ifchange notification list */ struct list accept_list; /* list of pending accept requests */ struct accept_req *accept_recv_req; /* pending accept-into request which will recv on this socket */ }; static void sock_dump( struct object *obj, int verbose ); static struct fd *sock_get_fd( struct object *obj ); static int sock_close_handle( struct object *obj, struct process *process, obj_handle_t handle ); static void sock_destroy( struct object *obj ); static struct object *sock_get_ifchange( struct sock *sock ); static void sock_release_ifchange( struct sock *sock ); static int sock_get_poll_events( struct fd *fd ); static void sock_poll_event( struct fd *fd, int event ); static enum server_fd_type sock_get_fd_type( struct fd *fd ); static int sock_ioctl( struct fd *fd, ioctl_code_t code, struct async *async ); static void sock_queue_async( struct fd *fd, struct async *async, int type, int count ); static void sock_reselect_async( struct fd *fd, struct async_queue *queue ); static int accept_into_socket( struct sock *sock, struct sock *acceptsock ); static struct sock *accept_socket( struct sock *sock ); static int sock_get_ntstatus( int err ); static unsigned int sock_get_error( int err ); static const struct object_ops sock_ops = { sizeof(struct sock), /* size */ &file_type, /* type */ sock_dump, /* dump */ add_queue, /* add_queue */ remove_queue, /* remove_queue */ default_fd_signaled, /* signaled */ no_satisfied, /* satisfied */ no_signal, /* signal */ sock_get_fd, /* get_fd */ default_map_access, /* map_access */ default_get_sd, /* get_sd */ default_set_sd, /* set_sd */ no_get_full_name, /* get_full_name */ no_lookup_name, /* lookup_name */ no_link_name, /* link_name */ NULL, /* unlink_name */ no_open_file, /* open_file */ no_kernel_obj_list, /* get_kernel_obj_list */ sock_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 */ sock_get_fd_type, /* get_fd_type */ no_fd_read, /* read */ no_fd_write, /* write */ no_fd_flush, /* flush */ default_fd_get_file_info, /* get_file_info */ no_fd_get_volume_info, /* get_volume_info */ sock_ioctl, /* ioctl */ sock_queue_async, /* queue_async */ sock_reselect_async /* reselect_async */ }; union unix_sockaddr { struct sockaddr addr; struct sockaddr_in in; struct sockaddr_in6 in6; #ifdef HAS_IPX struct sockaddr_ipx ipx; #endif #ifdef HAS_IRDA struct sockaddr_irda irda; #endif }; static int sockaddr_from_unix( const union unix_sockaddr *uaddr, struct WS_sockaddr *wsaddr, socklen_t wsaddrlen ) { memset( wsaddr, 0, wsaddrlen ); switch (uaddr->addr.sa_family) { case AF_INET: { struct WS_sockaddr_in win = {0}; if (wsaddrlen < sizeof(win)) return -1; win.sin_family = WS_AF_INET; win.sin_port = uaddr->in.sin_port; memcpy( &win.sin_addr, &uaddr->in.sin_addr, sizeof(win.sin_addr) ); memcpy( wsaddr, &win, sizeof(win) ); return sizeof(win); } case AF_INET6: { struct WS_sockaddr_in6 win = {0}; if (wsaddrlen < sizeof(struct WS_sockaddr_in6_old)) return -1; win.sin6_family = WS_AF_INET6; win.sin6_port = uaddr->in6.sin6_port; win.sin6_flowinfo = uaddr->in6.sin6_flowinfo; memcpy( &win.sin6_addr, &uaddr->in6.sin6_addr, sizeof(win.sin6_addr) ); #ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID win.sin6_scope_id = uaddr->in6.sin6_scope_id; #endif if (wsaddrlen >= sizeof(struct WS_sockaddr_in6)) { memcpy( wsaddr, &win, sizeof(struct WS_sockaddr_in6) ); return sizeof(struct WS_sockaddr_in6); } memcpy( wsaddr, &win, sizeof(struct WS_sockaddr_in6_old) ); return sizeof(struct WS_sockaddr_in6_old); } #ifdef HAS_IPX case AF_IPX: { struct WS_sockaddr_ipx win = {0}; if (wsaddrlen < sizeof(win)) return -1; win.sa_family = WS_AF_IPX; memcpy( win.sa_netnum, &uaddr->ipx.sipx_network, sizeof(win.sa_netnum) ); memcpy( win.sa_nodenum, &uaddr->ipx.sipx_node, sizeof(win.sa_nodenum) ); win.sa_socket = uaddr->ipx.sipx_port; memcpy( wsaddr, &win, sizeof(win) ); return sizeof(win); } #endif #ifdef HAS_IRDA case AF_IRDA: { SOCKADDR_IRDA win; if (wsaddrlen < sizeof(win)) return -1; win.irdaAddressFamily = WS_AF_IRDA; memcpy( win.irdaDeviceID, &uaddr->irda.sir_addr, sizeof(win.irdaDeviceID) ); if (uaddr->irda.sir_lsap_sel != LSAP_ANY) snprintf( win.irdaServiceName, sizeof(win.irdaServiceName), "LSAP-SEL%u", uaddr->irda.sir_lsap_sel ); else memcpy( win.irdaServiceName, uaddr->irda.sir_name, sizeof(win.irdaServiceName) ); memcpy( wsaddr, &win, sizeof(win) ); return sizeof(win); } #endif case AF_UNSPEC: return 0; default: return -1; } } /* 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 ) ) return ret; if ( shutdown( fd[0], 1 ) ) goto out; pfd.fd = fd[1]; pfd.events = POLLIN; pfd.revents = 0; /* Solaris' poll() sometimes returns nothing if given a 0ms timeout here */ n = poll( &pfd, 1, 1 ); 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; allow_fd_caching( sock->fd ); } /* update condition mask */ set_fd_events( sock->fd, ev ); return ev; } /* wake anybody waiting on the socket event or send the associated message */ static void sock_wake_up( struct sock *sock ) { unsigned int events = sock->pmask & sock->mask; int i; if ( !events ) 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 %08x\n", events, sock->window ); for (i = 0; i < FD_MAX_EVENTS; i++) { int event = event_bitorder[i]; if (sock->pmask & (1 << event)) { lparam_t lparam = (1 << event) | (sock->errors[event] << 16); post_message( sock->window, sock->message, sock->wparam, lparam ); } } sock->pmask = 0; sock_reselect( sock ); } } static inline int sock_error( struct fd *fd ) { unsigned int optval = 0; socklen_t optlen = sizeof(optval); getsockopt( get_unix_fd(fd), SOL_SOCKET, SO_ERROR, (void *) &optval, &optlen); return optval; } static void free_accept_req( void *private ) { struct accept_req *req = private; list_remove( &req->entry ); if (req->acceptsock) { req->acceptsock->accept_recv_req = NULL; release_object( req->acceptsock ); } release_object( req->async ); release_object( req->iosb ); release_object( req->sock ); free( req ); } static void fill_accept_output( struct accept_req *req ) { struct iosb *iosb = req->iosb; union unix_sockaddr unix_addr; struct WS_sockaddr *win_addr; unsigned int remote_len; socklen_t unix_len; int fd, size = 0; char *out_data; int win_len; if (!(out_data = mem_alloc( iosb->out_size ))) return; fd = get_unix_fd( req->acceptsock->fd ); if (req->recv_len && (size = recv( fd, out_data, req->recv_len, 0 )) < 0) { if (!req->accepted && errno == EWOULDBLOCK) { req->accepted = 1; sock_reselect( req->acceptsock ); set_error( STATUS_PENDING ); return; } set_error( sock_get_ntstatus( errno ) ); free( out_data ); return; } if (req->local_len) { if (req->local_len < sizeof(int)) { set_error( STATUS_BUFFER_TOO_SMALL ); free( out_data ); return; } unix_len = sizeof(unix_addr); win_addr = (struct WS_sockaddr *)(out_data + req->recv_len + sizeof(int)); if (getsockname( fd, &unix_addr.addr, &unix_len ) < 0 || (win_len = sockaddr_from_unix( &unix_addr, win_addr, req->local_len - sizeof(int) )) < 0) { set_error( sock_get_ntstatus( errno ) ); free( out_data ); return; } memcpy( out_data + req->recv_len, &win_len, sizeof(int) ); } unix_len = sizeof(unix_addr); win_addr = (struct WS_sockaddr *)(out_data + req->recv_len + req->local_len + sizeof(int)); remote_len = iosb->out_size - req->recv_len - req->local_len; if (getpeername( fd, &unix_addr.addr, &unix_len ) < 0 || (win_len = sockaddr_from_unix( &unix_addr, win_addr, remote_len - sizeof(int) )) < 0) { set_error( sock_get_ntstatus( errno ) ); free( out_data ); return; } memcpy( out_data + req->recv_len + req->local_len, &win_len, sizeof(int) ); iosb->status = STATUS_SUCCESS; iosb->result = size; iosb->out_data = out_data; set_error( STATUS_ALERTED ); } static void complete_async_accept( struct sock *sock, struct accept_req *req ) { struct sock *acceptsock = req->acceptsock; struct async *async = req->async; if (debug_level) fprintf( stderr, "completing accept request for socket %p\n", sock ); if (acceptsock) { if (!accept_into_socket( sock, acceptsock )) return; fill_accept_output( req ); } else { struct iosb *iosb = req->iosb; obj_handle_t handle; if (!(acceptsock = accept_socket( sock ))) return; handle = alloc_handle_no_access_check( async_get_thread( async )->process, &acceptsock->obj, GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, OBJ_INHERIT ); acceptsock->wparam = handle; release_object( acceptsock ); if (!handle) return; if (!(iosb->out_data = malloc( sizeof(handle) ))) return; iosb->status = STATUS_SUCCESS; iosb->out_size = sizeof(handle); memcpy( iosb->out_data, &handle, sizeof(handle) ); set_error( STATUS_ALERTED ); } } static void complete_async_accept_recv( struct accept_req *req ) { if (debug_level) fprintf( stderr, "completing accept recv request for socket %p\n", req->acceptsock ); assert( req->recv_len ); fill_accept_output( req ); } static int sock_dispatch_asyncs( struct sock *sock, int event, int error ) { if (event & (POLLIN | POLLPRI)) { struct accept_req *req; LIST_FOR_EACH_ENTRY( req, &sock->accept_list, struct accept_req, entry ) { if (req->iosb->status == STATUS_PENDING && !req->accepted) { complete_async_accept( sock, req ); if (get_error() != STATUS_PENDING) async_terminate( req->async, get_error() ); break; } } if (sock->accept_recv_req && sock->accept_recv_req->iosb->status == STATUS_PENDING) { complete_async_accept_recv( sock->accept_recv_req ); if (get_error() != STATUS_PENDING) async_terminate( sock->accept_recv_req->async, get_error() ); } } if (is_fd_overlapped( sock->fd )) { if (event & (POLLIN|POLLPRI) && async_waiting( &sock->read_q )) { if (debug_level) fprintf( stderr, "activating read queue for socket %p\n", sock ); async_wake_up( &sock->read_q, STATUS_ALERTED ); event &= ~(POLLIN|POLLPRI); } if (event & POLLOUT && async_waiting( &sock->write_q )) { if (debug_level) fprintf( stderr, "activating write queue for socket %p\n", sock ); async_wake_up( &sock->write_q, STATUS_ALERTED ); event &= ~POLLOUT; } } if (event & (POLLERR | POLLHUP)) { int status = sock_get_ntstatus( error ); struct accept_req *req, *next; if (!(sock->state & FD_READ)) async_wake_up( &sock->read_q, status ); if (!(sock->state & FD_WRITE)) async_wake_up( &sock->write_q, status ); LIST_FOR_EACH_ENTRY_SAFE( req, next, &sock->accept_list, struct accept_req, entry ) { if (req->iosb->status == STATUS_PENDING) async_terminate( req->async, status ); } if (sock->accept_recv_req && sock->accept_recv_req->iosb->status == STATUS_PENDING) async_terminate( sock->accept_recv_req->async, status ); } return event; } static void sock_dispatch_events( struct sock *sock, int prevstate, int event, int error ) { if (prevstate & FD_CONNECT) { sock->pmask |= FD_CONNECT; sock->hmask |= FD_CONNECT; sock->errors[FD_CONNECT_BIT] = sock_get_error( error ); goto end; } if (prevstate & FD_WINE_LISTENING) { sock->pmask |= FD_ACCEPT; sock->hmask |= FD_ACCEPT; sock->errors[FD_ACCEPT_BIT] = sock_get_error( error ); goto end; } if (event & POLLIN) { sock->pmask |= FD_READ; sock->hmask |= FD_READ; sock->errors[FD_READ_BIT] = 0; } if (event & POLLOUT) { sock->pmask |= FD_WRITE; sock->hmask |= FD_WRITE; sock->errors[FD_WRITE_BIT] = 0; } if (event & POLLPRI) { sock->pmask |= FD_OOB; sock->hmask |= FD_OOB; sock->errors[FD_OOB_BIT] = 0; } if (event & (POLLERR|POLLHUP)) { sock->pmask |= FD_CLOSE; sock->hmask |= FD_CLOSE; sock->errors[FD_CLOSE_BIT] = sock_get_error( error ); } end: sock_wake_up( sock ); } static void sock_poll_event( struct fd *fd, int event ) { struct sock *sock = get_fd_user( fd ); int hangup_seen = 0; int prevstate = sock->state; int error = 0; assert( sock->obj.ops == &sock_ops ); if (debug_level) fprintf(stderr, "socket %p select event: %x\n", sock, event); /* we may change event later, remove from loop here */ if (event & (POLLERR|POLLHUP)) set_fd_events( sock->fd, -1 ); if (sock->state & FD_CONNECT) { if (event & (POLLERR|POLLHUP)) { /* we didn't get connected? */ sock->state &= ~FD_CONNECT; event &= ~POLLOUT; error = sock_error( fd ); } else if (event & POLLOUT) { /* we got connected */ sock->state |= FD_WINE_CONNECTED|FD_READ|FD_WRITE; sock->state &= ~FD_CONNECT; sock->connect_time = current_time; } } else if (sock->state & FD_WINE_LISTENING) { /* listening */ if (event & (POLLERR|POLLHUP)) error = sock_error( fd ); } else { /* normal data flow */ if (sock->type == WS_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 ) { hangup_seen = 1; event &= ~POLLIN; } else if ( nr < 0 ) { event &= ~POLLIN; /* EAGAIN can happen if an async recv() falls between the server's poll() call and the invocation of this routine */ if ( errno != EAGAIN ) { error = errno; event |= POLLERR; if ( debug_level ) fprintf( stderr, "recv error on socket %p: %d\n", sock, errno ); } } } if ( (hangup_seen || event & (POLLHUP|POLLERR)) && (sock->state & (FD_READ|FD_WRITE)) ) { error = error ? error : sock_error( fd ); if ( (event & POLLERR) || ( sock_shutdown_type == SOCK_SHUTDOWN_EOF && (event & POLLHUP) )) sock->state &= ~FD_WRITE; sock->state &= ~FD_READ; if (debug_level) fprintf(stderr, "socket %p aborted by error %d, event: %x\n", sock, error, event); } if (hangup_seen) event |= POLLHUP; } event = sock_dispatch_asyncs( sock, event, error ); sock_dispatch_events( sock, prevstate, event, error ); sock_reselect( sock ); } static void sock_dump( struct object *obj, int verbose ) { struct sock *sock = (struct sock *)obj; assert( obj->ops == &sock_ops ); fprintf( stderr, "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_get_poll_events( struct fd *fd ) { struct sock *sock = get_fd_user( fd ); unsigned int mask = sock->mask & ~sock->hmask; unsigned int smask = sock->state & mask; int ev = 0; assert( sock->obj.ops == &sock_ops ); if (sock->state & FD_CONNECT) /* connecting, wait for writable */ return POLLOUT; if (!list_empty( &sock->accept_list ) || sock->accept_recv_req ) { ev |= POLLIN | POLLPRI; } else if (async_queued( &sock->read_q )) { if (async_waiting( &sock->read_q )) ev |= POLLIN | POLLPRI; } else if (smask & FD_READ || (sock->state & FD_WINE_LISTENING && mask & FD_ACCEPT)) ev |= POLLIN | POLLPRI; /* We use POLLIN with 0 bytes recv() as FD_CLOSE indication for stream sockets. */ else if (sock->type == WS_SOCK_STREAM && (sock->state & FD_READ) && (mask & FD_CLOSE) && !(sock->hmask & FD_READ)) ev |= POLLIN; if (async_queued( &sock->write_q )) { if (async_waiting( &sock->write_q )) ev |= POLLOUT; } else if (smask & FD_WRITE) ev |= POLLOUT; return ev; } static enum server_fd_type sock_get_fd_type( struct fd *fd ) { return FD_TYPE_SOCKET; } static void sock_queue_async( struct fd *fd, struct async *async, int type, int count ) { struct sock *sock = get_fd_user( fd ); struct async_queue *queue; assert( sock->obj.ops == &sock_ops ); switch (type) { case ASYNC_TYPE_READ: queue = &sock->read_q; break; case ASYNC_TYPE_WRITE: queue = &sock->write_q; break; default: set_error( STATUS_INVALID_PARAMETER ); return; } if ( ( !( sock->state & (FD_READ|FD_CONNECT|FD_WINE_LISTENING) ) && type == ASYNC_TYPE_READ ) || ( !( sock->state & (FD_WRITE|FD_CONNECT) ) && type == ASYNC_TYPE_WRITE ) ) { set_error( STATUS_PIPE_DISCONNECTED ); return; } queue_async( queue, async ); sock_reselect( sock ); set_error( STATUS_PENDING ); } static void sock_reselect_async( struct fd *fd, struct async_queue *queue ) { struct sock *sock = get_fd_user( fd ); /* ignore reselect on ifchange queue */ if (&sock->ifchange_q != queue) sock_reselect( sock ); } static struct fd *sock_get_fd( struct object *obj ) { struct sock *sock = (struct sock *)obj; return (struct fd *)grab_object( sock->fd ); } static int sock_close_handle( struct object *obj, struct process *process, obj_handle_t handle ) { struct sock *sock = (struct sock *)obj; struct accept_req *req, *next; if (sock->obj.handle_count == 1) /* last handle */ { if (sock->accept_recv_req) async_terminate( sock->accept_recv_req->async, STATUS_CANCELLED ); LIST_FOR_EACH_ENTRY_SAFE( req, next, &sock->accept_list, struct accept_req, entry ) async_terminate( req->async, STATUS_CANCELLED ); } return 1; } 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 ); async_wake_up( &sock->ifchange_q, STATUS_CANCELLED ); sock_release_ifchange( sock ); free_async_queue( &sock->read_q ); free_async_queue( &sock->write_q ); free_async_queue( &sock->ifchange_q ); free_async_queue( &sock->accept_q ); if (sock->event) release_object( sock->event ); if (sock->fd) { /* shut the socket down to force pending poll() calls in the client to return */ shutdown( get_unix_fd(sock->fd), SHUT_RDWR ); release_object( sock->fd ); } } static struct sock *create_socket(void) { struct sock *sock; if (!(sock = alloc_object( &sock_ops ))) return NULL; sock->fd = NULL; sock->state = 0; sock->mask = 0; sock->hmask = 0; sock->pmask = 0; sock->polling = 0; sock->flags = 0; sock->proto = 0; sock->type = 0; sock->family = 0; sock->event = NULL; sock->window = 0; sock->message = 0; sock->wparam = 0; sock->connect_time = 0; sock->deferred = NULL; sock->ifchange_obj = NULL; sock->accept_recv_req = NULL; init_async_queue( &sock->read_q ); init_async_queue( &sock->write_q ); init_async_queue( &sock->ifchange_q ); init_async_queue( &sock->accept_q ); memset( sock->errors, 0, sizeof(sock->errors) ); list_init( &sock->accept_list ); return sock; } static int get_unix_family( int family ) { switch (family) { case WS_AF_INET: return AF_INET; case WS_AF_INET6: return AF_INET6; #ifdef HAS_IPX case WS_AF_IPX: return AF_IPX; #endif #ifdef AF_IRDA case WS_AF_IRDA: return AF_IRDA; #endif case WS_AF_UNSPEC: return AF_UNSPEC; default: return -1; } } static int get_unix_type( int type ) { switch (type) { case WS_SOCK_DGRAM: return SOCK_DGRAM; case WS_SOCK_RAW: return SOCK_RAW; case WS_SOCK_STREAM: return SOCK_STREAM; default: return -1; } } static int get_unix_protocol( int protocol ) { if (protocol >= WS_NSPROTO_IPX && protocol <= WS_NSPROTO_IPX + 255) return protocol; switch (protocol) { case WS_IPPROTO_ICMP: return IPPROTO_ICMP; case WS_IPPROTO_IGMP: return IPPROTO_IGMP; case WS_IPPROTO_IP: return IPPROTO_IP; case WS_IPPROTO_IPV4: return IPPROTO_IPIP; case WS_IPPROTO_IPV6: return IPPROTO_IPV6; case WS_IPPROTO_RAW: return IPPROTO_RAW; case WS_IPPROTO_TCP: return IPPROTO_TCP; case WS_IPPROTO_UDP: return IPPROTO_UDP; default: return -1; } } static void set_dont_fragment( int fd, int level, int value ) { int optname; if (level == IPPROTO_IP) { #ifdef IP_DONTFRAG optname = IP_DONTFRAG; #elif defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO) && defined(IP_PMTUDISC_DONT) optname = IP_MTU_DISCOVER; value = value ? IP_PMTUDISC_DO : IP_PMTUDISC_DONT; #else return; #endif } else { #ifdef IPV6_DONTFRAG optname = IPV6_DONTFRAG; #elif defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO) && defined(IPV6_PMTUDISC_DONT) optname = IPV6_MTU_DISCOVER; value = value ? IPV6_PMTUDISC_DO : IPV6_PMTUDISC_DONT; #else return; #endif } setsockopt( fd, level, optname, &value, sizeof(value) ); } static int init_socket( struct sock *sock, int family, int type, int protocol, unsigned int flags ) { unsigned int options = 0; int sockfd, unix_type, unix_family, unix_protocol; unix_family = get_unix_family( family ); unix_type = get_unix_type( type ); unix_protocol = get_unix_protocol( protocol ); if (unix_protocol < 0) { if (type && unix_type < 0) set_win32_error( WSAESOCKTNOSUPPORT ); else set_win32_error( WSAEPROTONOSUPPORT ); return -1; } if (unix_family < 0) { if (family >= 0 && unix_type < 0) set_win32_error( WSAESOCKTNOSUPPORT ); else set_win32_error( WSAEAFNOSUPPORT ); return -1; } sockfd = socket( unix_family, unix_type, unix_protocol ); if (sockfd == -1) { if (errno == EINVAL) set_win32_error( WSAESOCKTNOSUPPORT ); else set_win32_error( sock_get_error( errno )); return -1; } fcntl(sockfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */ if (family == WS_AF_IPX && protocol >= WS_NSPROTO_IPX && protocol <= WS_NSPROTO_IPX + 255) { #ifdef HAS_IPX int ipx_type = protocol - WS_NSPROTO_IPX; #ifdef SOL_IPX setsockopt( sockfd, SOL_IPX, IPX_TYPE, &ipx_type, sizeof(ipx_type) ); #else struct ipx val; /* Should we retrieve val using a getsockopt call and then * set the modified one? */ val.ipx_pt = ipx_type; setsockopt( sockfd, 0, SO_DEFAULT_HEADERS, &val, sizeof(val) ); #endif #endif } if (unix_family == AF_INET || unix_family == AF_INET6) { /* ensure IP_DONTFRAGMENT is disabled for SOCK_DGRAM and SOCK_RAW, enabled for SOCK_STREAM */ if (unix_type == SOCK_DGRAM || unix_type == SOCK_RAW) /* in Linux the global default can be enabled */ set_dont_fragment( sockfd, unix_family == AF_INET6 ? IPPROTO_IPV6 : IPPROTO_IP, FALSE ); else if (unix_type == SOCK_STREAM) set_dont_fragment( sockfd, unix_family == AF_INET6 ? IPPROTO_IPV6 : IPPROTO_IP, TRUE ); } #ifdef IPV6_V6ONLY if (unix_family == AF_INET6) { static const int enable = 1; setsockopt( sockfd, IPPROTO_IPV6, IPV6_V6ONLY, &enable, sizeof(enable) ); } #endif sock->state = (type != SOCK_STREAM) ? (FD_READ|FD_WRITE) : 0; sock->flags = flags; sock->proto = protocol; sock->type = type; sock->family = family; if (sock->fd) { options = get_fd_options( sock->fd ); release_object( sock->fd ); } if (!(sock->fd = create_anonymous_fd( &sock_fd_ops, sockfd, &sock->obj, options ))) { return -1; } sock_reselect( sock ); clear_error(); return 0; } /* accepts a socket and inits it */ static int accept_new_fd( struct sock *sock ) { /* 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. */ struct sockaddr saddr; socklen_t slen = sizeof(saddr); int acceptfd = accept( get_unix_fd(sock->fd), &saddr, &slen ); if (acceptfd != -1) fcntl( acceptfd, F_SETFL, O_NONBLOCK ); else set_error( sock_get_ntstatus( errno )); return acceptfd; } /* accept a socket (creates a new fd) */ static struct sock *accept_socket( struct sock *sock ) { struct sock *acceptsock; int acceptfd; if (get_unix_fd( sock->fd ) == -1) return NULL; if ( sock->deferred ) { acceptsock = sock->deferred; sock->deferred = NULL; } else { if ((acceptfd = accept_new_fd( sock )) == -1) return NULL; if (!(acceptsock = create_socket())) { close( acceptfd ); return NULL; } /* newly created socket gets the same properties of the listening socket */ 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->proto = sock->proto; acceptsock->type = sock->type; acceptsock->family = sock->family; acceptsock->window = sock->window; acceptsock->message = sock->message; acceptsock->connect_time = current_time; if (sock->event) acceptsock->event = (struct event *)grab_object( sock->event ); acceptsock->flags = sock->flags; if (!(acceptsock->fd = create_anonymous_fd( &sock_fd_ops, acceptfd, &acceptsock->obj, get_fd_options( sock->fd ) ))) { release_object( acceptsock ); return NULL; } } clear_error(); sock->pmask &= ~FD_ACCEPT; sock->hmask &= ~FD_ACCEPT; sock_reselect( sock ); return acceptsock; } static int accept_into_socket( struct sock *sock, struct sock *acceptsock ) { int acceptfd; struct fd *newfd; if (get_unix_fd( sock->fd ) == -1) return FALSE; if ( sock->deferred ) { newfd = dup_fd_object( sock->deferred->fd, 0, 0, get_fd_options( acceptsock->fd ) ); if ( !newfd ) return FALSE; set_fd_user( newfd, &sock_fd_ops, &acceptsock->obj ); release_object( sock->deferred ); sock->deferred = NULL; } else { if ((acceptfd = accept_new_fd( sock )) == -1) return FALSE; if (!(newfd = create_anonymous_fd( &sock_fd_ops, acceptfd, &acceptsock->obj, get_fd_options( acceptsock->fd ) ))) return FALSE; } acceptsock->state |= FD_WINE_CONNECTED|FD_READ|FD_WRITE; acceptsock->hmask = 0; acceptsock->pmask = 0; acceptsock->polling = 0; acceptsock->proto = sock->proto; acceptsock->type = sock->type; acceptsock->family = sock->family; acceptsock->wparam = 0; acceptsock->deferred = NULL; acceptsock->connect_time = current_time; fd_copy_completion( acceptsock->fd, newfd ); release_object( acceptsock->fd ); acceptsock->fd = newfd; clear_error(); sock->pmask &= ~FD_ACCEPT; sock->hmask &= ~FD_ACCEPT; sock_reselect( sock ); return TRUE; } /* return an errno value mapped to a WSA error */ static unsigned 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 EINPROGRESS: case EWOULDBLOCK: return WSAEWOULDBLOCK; 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 case 0: return 0; default: errno = err; perror("wineserver: sock_get_error() can't map error"); return WSAEFAULT; } } static int sock_get_ntstatus( int err ) { switch ( err ) { case EBADF: return STATUS_INVALID_HANDLE; case EBUSY: return STATUS_DEVICE_BUSY; case EPERM: case EACCES: return STATUS_ACCESS_DENIED; case EFAULT: return STATUS_ACCESS_VIOLATION; case EINVAL: return STATUS_INVALID_PARAMETER; case ENFILE: case EMFILE: return STATUS_TOO_MANY_OPENED_FILES; case EINPROGRESS: case EWOULDBLOCK: return STATUS_DEVICE_NOT_READY; case EALREADY: return STATUS_NETWORK_BUSY; case ENOTSOCK: return STATUS_OBJECT_TYPE_MISMATCH; case EDESTADDRREQ: return STATUS_INVALID_PARAMETER; case EMSGSIZE: return STATUS_BUFFER_OVERFLOW; case EPROTONOSUPPORT: case ESOCKTNOSUPPORT: case EPFNOSUPPORT: case EAFNOSUPPORT: case EPROTOTYPE: return STATUS_NOT_SUPPORTED; case ENOPROTOOPT: return STATUS_INVALID_PARAMETER; case EOPNOTSUPP: return STATUS_NOT_SUPPORTED; case EADDRINUSE: return STATUS_SHARING_VIOLATION; case EADDRNOTAVAIL: return STATUS_INVALID_PARAMETER; case ECONNREFUSED: return STATUS_CONNECTION_REFUSED; case ESHUTDOWN: return STATUS_PIPE_DISCONNECTED; case ENOTCONN: return STATUS_INVALID_CONNECTION; case ETIMEDOUT: return STATUS_IO_TIMEOUT; case ENETUNREACH: return STATUS_NETWORK_UNREACHABLE; case EHOSTUNREACH: return STATUS_HOST_UNREACHABLE; case ENETDOWN: return STATUS_NETWORK_BUSY; case EPIPE: case ECONNRESET: return STATUS_CONNECTION_RESET; case ECONNABORTED: return STATUS_CONNECTION_ABORTED; case 0: return STATUS_SUCCESS; default: errno = err; perror("wineserver: sock_get_ntstatus() can't map error"); return STATUS_UNSUCCESSFUL; } } static struct accept_req *alloc_accept_req( struct sock *sock, struct sock *acceptsock, struct async *async, const struct afd_accept_into_params *params ) { struct accept_req *req = mem_alloc( sizeof(*req) ); if (req) { req->async = (struct async *)grab_object( async ); req->iosb = async_get_iosb( async ); req->sock = (struct sock *)grab_object( sock ); req->acceptsock = acceptsock; if (acceptsock) grab_object( acceptsock ); req->accepted = 0; req->recv_len = 0; req->local_len = 0; if (params) { req->recv_len = params->recv_len; req->local_len = params->local_len; } } return req; } static int sock_ioctl( struct fd *fd, ioctl_code_t code, struct async *async ) { struct sock *sock = get_fd_user( fd ); assert( sock->obj.ops == &sock_ops ); if (get_unix_fd( fd ) == -1 && code != IOCTL_AFD_CREATE) return 0; switch(code) { case IOCTL_AFD_CREATE: { const struct afd_create_params *params = get_req_data(); if (get_req_data_size() != sizeof(*params)) { set_error( STATUS_INVALID_PARAMETER ); return 0; } init_socket( sock, params->family, params->type, params->protocol, params->flags ); return 0; } case IOCTL_AFD_ACCEPT: { struct sock *acceptsock; obj_handle_t handle; if (get_reply_max_size() != sizeof(handle)) { set_error( STATUS_BUFFER_TOO_SMALL ); return 0; } if (!(acceptsock = accept_socket( sock ))) { struct accept_req *req; if (sock->state & FD_WINE_NONBLOCKING) return 0; if (get_error() != STATUS_DEVICE_NOT_READY) return 0; if (!(req = alloc_accept_req( sock, NULL, async, NULL ))) return 0; list_add_tail( &sock->accept_list, &req->entry ); async_set_completion_callback( async, free_accept_req, req ); queue_async( &sock->accept_q, async ); sock_reselect( sock ); set_error( STATUS_PENDING ); return 1; } handle = alloc_handle( current->process, &acceptsock->obj, GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, OBJ_INHERIT ); acceptsock->wparam = handle; release_object( acceptsock ); set_reply_data( &handle, sizeof(handle) ); return 0; } case IOCTL_AFD_ACCEPT_INTO: { static const int access = FILE_READ_ATTRIBUTES | FILE_WRITE_ATTRIBUTES | FILE_READ_DATA; const struct afd_accept_into_params *params = get_req_data(); struct sock *acceptsock; unsigned int remote_len; struct accept_req *req; if (get_req_data_size() != sizeof(*params) || get_reply_max_size() < params->recv_len || get_reply_max_size() - params->recv_len < params->local_len) { set_error( STATUS_BUFFER_TOO_SMALL ); return 0; } remote_len = get_reply_max_size() - params->recv_len - params->local_len; if (remote_len < sizeof(int)) { set_error( STATUS_INVALID_PARAMETER ); return 0; } if (!(acceptsock = (struct sock *)get_handle_obj( current->process, params->accept_handle, access, &sock_ops ))) return 0; if (acceptsock->accept_recv_req) { release_object( acceptsock ); set_error( STATUS_INVALID_PARAMETER ); return 0; } if (!(req = alloc_accept_req( sock, acceptsock, async, params ))) { release_object( acceptsock ); return 0; } list_add_tail( &sock->accept_list, &req->entry ); acceptsock->accept_recv_req = req; release_object( acceptsock ); acceptsock->wparam = params->accept_handle; async_set_completion_callback( async, free_accept_req, req ); queue_async( &sock->accept_q, async ); sock_reselect( sock ); set_error( STATUS_PENDING ); return 1; } case IOCTL_AFD_ADDRESS_LIST_CHANGE: if ((sock->state & FD_WINE_NONBLOCKING) && async_is_blocking( async )) { set_error( STATUS_DEVICE_NOT_READY ); return 0; } if (!sock_get_ifchange( sock )) return 0; queue_async( &sock->ifchange_q, async ); set_error( STATUS_PENDING ); return 1; default: set_error( STATUS_NOT_SUPPORTED ); return 0; } } #ifdef HAVE_LINUX_RTNETLINK_H /* only keep one ifchange object around, all sockets waiting for wakeups will look to it */ static struct object *ifchange_object; static void ifchange_dump( struct object *obj, int verbose ); static struct fd *ifchange_get_fd( struct object *obj ); static void ifchange_destroy( struct object *obj ); static int ifchange_get_poll_events( struct fd *fd ); static void ifchange_poll_event( struct fd *fd, int event ); struct ifchange { struct object obj; /* object header */ struct fd *fd; /* interface change file descriptor */ struct list sockets; /* list of sockets to send interface change notifications */ }; static const struct object_ops ifchange_ops = { sizeof(struct ifchange), /* size */ &no_type, /* type */ ifchange_dump, /* dump */ no_add_queue, /* add_queue */ NULL, /* remove_queue */ NULL, /* signaled */ no_satisfied, /* satisfied */ no_signal, /* signal */ ifchange_get_fd, /* get_fd */ default_map_access, /* map_access */ default_get_sd, /* get_sd */ default_set_sd, /* set_sd */ no_get_full_name, /* get_full_name */ no_lookup_name, /* lookup_name */ no_link_name, /* link_name */ NULL, /* unlink_name */ no_open_file, /* open_file */ no_kernel_obj_list, /* get_kernel_obj_list */ no_close_handle, /* close_handle */ ifchange_destroy /* destroy */ }; static const struct fd_ops ifchange_fd_ops = { ifchange_get_poll_events, /* get_poll_events */ ifchange_poll_event, /* poll_event */ NULL, /* get_fd_type */ no_fd_read, /* read */ no_fd_write, /* write */ no_fd_flush, /* flush */ no_fd_get_file_info, /* get_file_info */ no_fd_get_volume_info, /* get_volume_info */ no_fd_ioctl, /* ioctl */ NULL, /* queue_async */ NULL /* reselect_async */ }; static void ifchange_dump( struct object *obj, int verbose ) { assert( obj->ops == &ifchange_ops ); fprintf( stderr, "Interface change\n" ); } static struct fd *ifchange_get_fd( struct object *obj ) { struct ifchange *ifchange = (struct ifchange *)obj; return (struct fd *)grab_object( ifchange->fd ); } static void ifchange_destroy( struct object *obj ) { struct ifchange *ifchange = (struct ifchange *)obj; assert( obj->ops == &ifchange_ops ); release_object( ifchange->fd ); /* reset the global ifchange object so that it will be recreated if it is needed again */ assert( obj == ifchange_object ); ifchange_object = NULL; } static int ifchange_get_poll_events( struct fd *fd ) { return POLLIN; } /* wake up all the sockets waiting for a change notification event */ static void ifchange_wake_up( struct object *obj, unsigned int status ) { struct ifchange *ifchange = (struct ifchange *)obj; struct list *ptr, *next; assert( obj->ops == &ifchange_ops ); assert( obj == ifchange_object ); LIST_FOR_EACH_SAFE( ptr, next, &ifchange->sockets ) { struct sock *sock = LIST_ENTRY( ptr, struct sock, ifchange_entry ); assert( sock->ifchange_obj ); async_wake_up( &sock->ifchange_q, status ); /* issue ifchange notification for the socket */ sock_release_ifchange( sock ); /* remove socket from list and decrement ifchange refcount */ } } static void ifchange_poll_event( struct fd *fd, int event ) { struct object *ifchange = get_fd_user( fd ); unsigned int status = STATUS_PENDING; char buffer[PIPE_BUF]; int r; r = recv( get_unix_fd(fd), buffer, sizeof(buffer), MSG_DONTWAIT ); if (r < 0) { if (errno == EWOULDBLOCK || (EWOULDBLOCK != EAGAIN && errno == EAGAIN)) return; /* retry when poll() says the socket is ready */ status = sock_get_ntstatus( errno ); } else if (r > 0) { struct nlmsghdr *nlh; for (nlh = (struct nlmsghdr *)buffer; NLMSG_OK(nlh, r); nlh = NLMSG_NEXT(nlh, r)) { if (nlh->nlmsg_type == NLMSG_DONE) break; if (nlh->nlmsg_type == RTM_NEWADDR || nlh->nlmsg_type == RTM_DELADDR) status = STATUS_SUCCESS; } } else status = STATUS_CANCELLED; if (status != STATUS_PENDING) ifchange_wake_up( ifchange, status ); } #endif /* we only need one of these interface notification objects, all of the sockets dependent upon * it will wake up when a notification event occurs */ static struct object *get_ifchange( void ) { #ifdef HAVE_LINUX_RTNETLINK_H struct ifchange *ifchange; struct sockaddr_nl addr; int unix_fd; if (ifchange_object) { /* increment the refcount for each socket that uses the ifchange object */ return grab_object( ifchange_object ); } /* create the socket we need for processing interface change notifications */ unix_fd = socket( PF_NETLINK, SOCK_RAW, NETLINK_ROUTE ); if (unix_fd == -1) { set_error( sock_get_ntstatus( errno )); return NULL; } fcntl( unix_fd, F_SETFL, O_NONBLOCK ); /* make socket nonblocking */ memset( &addr, 0, sizeof(addr) ); addr.nl_family = AF_NETLINK; addr.nl_groups = RTMGRP_IPV4_IFADDR; /* bind the socket to the special netlink kernel interface */ if (bind( unix_fd, (struct sockaddr *)&addr, sizeof(addr) ) == -1) { close( unix_fd ); set_error( sock_get_ntstatus( errno )); return NULL; } if (!(ifchange = alloc_object( &ifchange_ops ))) { close( unix_fd ); set_error( STATUS_NO_MEMORY ); return NULL; } list_init( &ifchange->sockets ); if (!(ifchange->fd = create_anonymous_fd( &ifchange_fd_ops, unix_fd, &ifchange->obj, 0 ))) { release_object( ifchange ); set_error( STATUS_NO_MEMORY ); return NULL; } set_fd_events( ifchange->fd, POLLIN ); /* enable read wakeup on the file descriptor */ /* the ifchange object is now successfully configured */ ifchange_object = &ifchange->obj; return &ifchange->obj; #else set_error( STATUS_NOT_SUPPORTED ); return NULL; #endif } /* add the socket to the interface change notification list */ static void ifchange_add_sock( struct object *obj, struct sock *sock ) { #ifdef HAVE_LINUX_RTNETLINK_H struct ifchange *ifchange = (struct ifchange *)obj; list_add_tail( &ifchange->sockets, &sock->ifchange_entry ); #endif } /* create a new ifchange queue for a specific socket or, if one already exists, reuse the existing one */ static struct object *sock_get_ifchange( struct sock *sock ) { struct object *ifchange; if (sock->ifchange_obj) /* reuse existing ifchange_obj for this socket */ return sock->ifchange_obj; if (!(ifchange = get_ifchange())) return NULL; /* add the socket to the ifchange notification list */ ifchange_add_sock( ifchange, sock ); sock->ifchange_obj = ifchange; return ifchange; } /* destroy an existing ifchange queue for a specific socket */ static void sock_release_ifchange( struct sock *sock ) { if (sock->ifchange_obj) { list_remove( &sock->ifchange_entry ); release_object( sock->ifchange_obj ); sock->ifchange_obj = NULL; } } static void socket_device_dump( struct object *obj, int verbose ); static struct object *socket_device_lookup_name( struct object *obj, struct unicode_str *name, unsigned int attr, struct object *root ); static struct object *socket_device_open_file( struct object *obj, unsigned int access, unsigned int sharing, unsigned int options ); static const struct object_ops socket_device_ops = { sizeof(struct object), /* size */ &device_type, /* type */ socket_device_dump, /* dump */ no_add_queue, /* add_queue */ NULL, /* remove_queue */ NULL, /* signaled */ no_satisfied, /* satisfied */ no_signal, /* signal */ no_get_fd, /* get_fd */ default_map_access, /* map_access */ default_get_sd, /* get_sd */ default_set_sd, /* set_sd */ default_get_full_name, /* get_full_name */ socket_device_lookup_name, /* lookup_name */ directory_link_name, /* link_name */ default_unlink_name, /* unlink_name */ socket_device_open_file, /* open_file */ no_kernel_obj_list, /* get_kernel_obj_list */ no_close_handle, /* close_handle */ no_destroy /* destroy */ }; static void socket_device_dump( struct object *obj, int verbose ) { fputs( "Socket device\n", stderr ); } static struct object *socket_device_lookup_name( struct object *obj, struct unicode_str *name, unsigned int attr, struct object *root ) { return NULL; } static struct object *socket_device_open_file( struct object *obj, unsigned int access, unsigned int sharing, unsigned int options ) { struct sock *sock; if (!(sock = create_socket())) return NULL; if (!(sock->fd = alloc_pseudo_fd( &sock_fd_ops, &sock->obj, options ))) { release_object( sock ); return NULL; } return &sock->obj; } struct object *create_socket_device( struct object *root, const struct unicode_str *name, unsigned int attr, const struct security_descriptor *sd ) { return create_named_object( root, &socket_device_ops, name, attr, sd ); } /* set socket event parameters */ DECL_HANDLER(set_socket_event) { struct sock *sock; struct event *old_event; if (!(sock = (struct sock *)get_handle_obj( current->process, req->handle, FILE_WRITE_ATTRIBUTES, &sock_ops))) return; if (get_unix_fd( sock->fd ) == -1) return; old_event = sock->event; sock->mask = req->mask; sock->hmask &= ~req->mask; /* re-enable held events */ 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); sock_reselect( sock ); 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) */ sock_wake_up( sock ); 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; if (!(sock = (struct sock *)get_handle_obj( current->process, req->handle, FILE_READ_ATTRIBUTES, &sock_ops ))) return; if (get_unix_fd( sock->fd ) == -1) 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; if (!(sock = (struct sock*)get_handle_obj( current->process, req->handle, FILE_WRITE_ATTRIBUTES, &sock_ops))) return; if (get_unix_fd( sock->fd ) == -1) return; /* for event-based notification, windows erases stale events */ sock->pmask &= ~req->mask; sock->hmask &= ~req->mask; sock->state |= req->sstate; sock->state &= ~req->cstate; if (sock->type != WS_SOCK_STREAM) sock->state &= ~STREAM_FLAG_MASK; sock_reselect( sock ); 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 ) return; acceptsock = (struct sock *)get_handle_obj( current->process, req->deferred, 0, &sock_ops ); if ( !acceptsock ) { release_object( sock ); return; } sock->deferred = acceptsock; release_object( sock ); } DECL_HANDLER(get_socket_info) { struct sock *sock; sock = (struct sock *)get_handle_obj( current->process, req->handle, FILE_READ_ATTRIBUTES, &sock_ops ); if (!sock) return; if (get_unix_fd( sock->fd ) == -1) return; reply->family = sock->family; reply->type = sock->type; reply->protocol = sock->proto; release_object( &sock->obj ); }