session.h

/* $OpenBSD: session.h,v 1.37 2023/01/06 02:39:59 djm Exp $ */

/*
 * Copyright (c) 2000, 2001 Markus Friedl.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef SESSION_H
#define SESSION_H

#define TTYSZ 64
typedef struct Session Session;
struct Session {
    int used;
    int self;
    int next_unused;
    struct passwd *pw;
    Authctxt *authctxt;
    pid_t   pid;
    int forced;

    /* tty */
    char    *term;
    int ptyfd, ttyfd, ptymaster;
    u_int   row, col, xpixel, ypixel;
    char    tty[TTYSZ];

    /* X11 */
    u_int   display_number;
    char    *display;
    u_int   screen;
    char    *auth_display;
    char    *auth_proto;
    char    *auth_data;
    int single_connection;

    int chanid;
    int *x11_chanids;
    int is_subsystem;
    char    *subsys;
    u_int   num_env;
    struct {
        char    *name;
        char    *val;
    } *env;

    /* exec */
#ifdef SSH_AUDIT_EVENTS
    int command_handle;
    char    *command;
#endif
};

void     do_authenticated(struct ssh *, Authctxt *);
void     do_cleanup(struct ssh *, Authctxt *);

int  session_open(Authctxt *, int);
void     session_unused(int);
int  session_input_channel_req(struct ssh *, Channel *, const char *);
void     session_close_by_pid(struct ssh *ssh, pid_t, int);
void     session_close_by_channel(struct ssh *, int, int, void *);
void     session_destroy_all(struct ssh *, void (*)(struct ssh*, Session *));
void     session_pty_cleanup2(Session *);
void     session_end_command2(struct ssh *ssh, Session *);

Session *session_new(void);
Session *session_by_id(int);
Session *session_by_tty(char *);
void     session_close(struct ssh *, Session *);
void     do_setusercontext(struct passwd *);

const char  *session_get_remote_name_or_ip(struct ssh *, u_int, int);

#endif