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/* Copyright 2018 Bert Muennich
*
* This file is part of physlock.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef PHYSLOCK_H
#define PHYSLOCK_H
#include <stdarg.h>
#include <stdio.h>
#include <termios.h>
#include <sys/types.h>
#include <security/pam_appl.h>
/*
* Annotation for functions called in cleanup().
* These functions are not allowed to call error(!0, ...) or exit().
*/
#define CLEANUP
/* main.c */
typedef struct userinfo_s {
const char *name;
int pam_status;
pam_handle_t *pamh;
} userinfo_t;
void get_user_by_id(userinfo_t*, uid_t);
void get_user_by_name(userinfo_t*, const char*);
CLEANUP void free_user(userinfo_t*);
int authenticate(userinfo_t*);
/* options.c */
typedef struct options_s {
int detach;
int disable_sysrq;
int lock_switch;
int mute_kernel_messages;
const char *prompt;
} options_t;
extern const options_t *options;
void parse_options(int, char**);
/* session.c */
int get_user_systemd(userinfo_t*, int);
int get_user_utmp(userinfo_t*, int);
/* util.h */
extern const char *progname;
void error_init(int);
void error(int, int, const char*, ...);
char* estrdup(const char*);
int read_int_from_file(const char*, char);
CLEANUP ssize_t write_int_to_file(const char*, int);
/* vt.h */
typedef struct vt_s {
int nr;
FILE *ios;
int fd;
struct termios term;
struct termios term_orig;
} vt_t;
void vt_init();
CLEANUP void vt_destroy();
void vt_get_current(int*, uid_t*);
CLEANUP int vt_lock_switch(int);
void vt_acquire(vt_t*);
void vt_reopen(vt_t*);
CLEANUP int vt_release(vt_t*, int);
void vt_secure(vt_t*);
CLEANUP void vt_reset(vt_t*);
#endif /* PHYSLOCK_H */
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