mirror of https://github.com/tp4a/teleport
162 lines
4.5 KiB
C
162 lines
4.5 KiB
C
/*
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* This file is part of the SSH Library
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*
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* Copyright (c) 2009 by Aris Adamantiadis
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef POLL_H_
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#define POLL_H_
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#include "config.h"
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#ifdef HAVE_POLL
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#include <poll.h>
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typedef struct pollfd ssh_pollfd_t;
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#else /* HAVE_POLL */
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/* poll emulation support */
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typedef struct ssh_pollfd_struct {
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socket_t fd; /* file descriptor */
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short events; /* requested events */
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short revents; /* returned events */
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} ssh_pollfd_t;
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typedef unsigned long int nfds_t;
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#ifdef _WIN32
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#ifndef POLLRDNORM
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#define POLLRDNORM 0x0100
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#endif
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#ifndef POLLRDBAND
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#define POLLRDBAND 0x0200
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#endif
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#ifndef POLLIN
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#define POLLIN (POLLRDNORM | POLLRDBAND)
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#endif
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#ifndef POLLPRI
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#define POLLPRI 0x0400
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#endif
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#ifndef POLLWRNORM
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#define POLLWRNORM 0x0010
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#endif
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#ifndef POLLOUT
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#define POLLOUT (POLLWRNORM)
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#endif
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#ifndef POLLWRBAND
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#define POLLWRBAND 0x0020
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#endif
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#ifndef POLLERR
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#define POLLERR 0x0001
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#endif
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#ifndef POLLHUP
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#define POLLHUP 0x0002
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#endif
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#ifndef POLLNVAL
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#define POLLNVAL 0x0004
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#endif
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#else /* _WIN32 */
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/* poll.c */
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#ifndef POLLIN
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#define POLLIN 0x001 /* There is data to read. */
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#endif
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#ifndef POLLPRI
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#define POLLPRI 0x002 /* There is urgent data to read. */
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#endif
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#ifndef POLLOUT
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#define POLLOUT 0x004 /* Writing now will not block. */
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#endif
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#ifndef POLLERR
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#define POLLERR 0x008 /* Error condition. */
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#endif
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#ifndef POLLHUP
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#define POLLHUP 0x010 /* Hung up. */
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#endif
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#ifndef POLLNVAL
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#define POLLNVAL 0x020 /* Invalid polling request. */
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#endif
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#ifndef POLLRDNORM
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#define POLLRDNORM 0x040 /* mapped to read fds_set */
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#endif
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#ifndef POLLRDBAND
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#define POLLRDBAND 0x080 /* mapped to exception fds_set */
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#endif
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#ifndef POLLWRNORM
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#define POLLWRNORM 0x100 /* mapped to write fds_set */
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#endif
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#ifndef POLLWRBAND
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#define POLLWRBAND 0x200 /* mapped to write fds_set */
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#endif
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#endif /* WIN32 */
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#endif /* HAVE_POLL */
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void ssh_poll_init(void);
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void ssh_poll_cleanup(void);
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int ssh_poll(ssh_pollfd_t *fds, nfds_t nfds, int timeout);
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typedef struct ssh_poll_ctx_struct *ssh_poll_ctx;
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typedef struct ssh_poll_handle_struct *ssh_poll_handle;
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/**
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* @brief SSH poll callback. This callback will be used when an event
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* caught on the socket.
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*
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* @param p Poll object this callback belongs to.
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* @param fd The raw socket.
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* @param revents The current poll events on the socket.
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* @param userdata Userdata to be passed to the callback function.
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*
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* @return 0 on success, < 0 if you removed the poll object from
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* its poll context.
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*/
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typedef int (*ssh_poll_callback)(ssh_poll_handle p, socket_t fd, int revents,
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void *userdata);
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struct ssh_socket_struct;
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ssh_poll_handle ssh_poll_new(socket_t fd, short events, ssh_poll_callback cb,
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void *userdata);
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void ssh_poll_free(ssh_poll_handle p);
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ssh_poll_ctx ssh_poll_get_ctx(ssh_poll_handle p);
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short ssh_poll_get_events(ssh_poll_handle p);
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void ssh_poll_set_events(ssh_poll_handle p, short events);
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void ssh_poll_add_events(ssh_poll_handle p, short events);
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void ssh_poll_remove_events(ssh_poll_handle p, short events);
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socket_t ssh_poll_get_fd(ssh_poll_handle p);
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void ssh_poll_set_fd(ssh_poll_handle p, socket_t fd);
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void ssh_poll_set_callback(ssh_poll_handle p, ssh_poll_callback cb, void *userdata);
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ssh_poll_ctx ssh_poll_ctx_new(size_t chunk_size);
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void ssh_poll_ctx_free(ssh_poll_ctx ctx);
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int ssh_poll_ctx_add(ssh_poll_ctx ctx, ssh_poll_handle p);
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int ssh_poll_ctx_add_socket (ssh_poll_ctx ctx, struct ssh_socket_struct *s);
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void ssh_poll_ctx_remove(ssh_poll_ctx ctx, ssh_poll_handle p);
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int ssh_poll_ctx_dopoll(ssh_poll_ctx ctx, int timeout);
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ssh_poll_ctx ssh_poll_get_default_ctx(ssh_session session);
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int ssh_event_add_poll(ssh_event event, ssh_poll_handle p);
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void ssh_event_remove_poll(ssh_event event, ssh_poll_handle p);
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#endif /* POLL_H_ */
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