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linux.rs
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use super::{CursorData, ResultType};
use desktop::Desktop;
pub use hbb_common::platform::linux::*;
use hbb_common::{
allow_err, bail,
config::Config,
libc::{c_char, c_int, c_long, c_void},
log,
message_proto::Resolution,
regex::{Captures, Regex},
};
use std::{
cell::RefCell,
io::Write,
path::{Path, PathBuf},
process::{Child, Command},
string::String,
sync::{
atomic::{AtomicBool, Ordering},
Arc,
},
time::{Duration, Instant},
};
use users::{get_user_by_name, os::unix::UserExt};
type Xdo = *const c_void;
pub const PA_SAMPLE_RATE: u32 = 48000;
static mut UNMODIFIED: bool = true;
thread_local! {
static XDO: RefCell<Xdo> = RefCell::new(unsafe { xdo_new(std::ptr::null()) });
static DISPLAY: RefCell<*mut c_void> = RefCell::new(unsafe { XOpenDisplay(std::ptr::null())});
}
extern "C" {
fn xdo_get_mouse_location(
xdo: Xdo,
x: *mut c_int,
y: *mut c_int,
screen_num: *mut c_int,
) -> c_int;
fn xdo_new(display: *const c_char) -> Xdo;
}
#[link(name = "X11")]
extern "C" {
fn XOpenDisplay(display_name: *const c_char) -> *mut c_void;
// fn XCloseDisplay(d: *mut c_void) -> c_int;
}
#[link(name = "Xfixes")]
extern "C" {
// fn XFixesQueryExtension(dpy: *mut c_void, event: *mut c_int, error: *mut c_int) -> c_int;
fn XFixesGetCursorImage(dpy: *mut c_void) -> *const xcb_xfixes_get_cursor_image;
fn XFree(data: *mut c_void);
}
// /usr/include/X11/extensions/Xfixes.h
#[repr(C)]
pub struct xcb_xfixes_get_cursor_image {
pub x: i16,
pub y: i16,
pub width: u16,
pub height: u16,
pub xhot: u16,
pub yhot: u16,
pub cursor_serial: c_long,
pub pixels: *const c_long,
}
#[inline]
fn sleep_millis(millis: u64) {
std::thread::sleep(Duration::from_millis(millis));
}
pub fn get_cursor_pos() -> Option<(i32, i32)> {
let mut res = None;
XDO.with(|xdo| {
if let Ok(xdo) = xdo.try_borrow_mut() {
if xdo.is_null() {
return;
}
let mut x: c_int = 0;
let mut y: c_int = 0;
unsafe {
xdo_get_mouse_location(*xdo, &mut x as _, &mut y as _, std::ptr::null_mut());
}
res = Some((x, y));
}
});
res
}
pub fn reset_input_cache() {}
pub fn get_cursor() -> ResultType<Option<u64>> {
let mut res = None;
DISPLAY.with(|conn| {
if let Ok(d) = conn.try_borrow_mut() {
if !d.is_null() {
unsafe {
let img = XFixesGetCursorImage(*d);
if !img.is_null() {
res = Some((*img).cursor_serial as u64);
XFree(img as _);
}
}
}
}
});
Ok(res)
}
pub fn get_cursor_data(hcursor: u64) -> ResultType<CursorData> {
let mut res = None;
DISPLAY.with(|conn| {
if let Ok(ref mut d) = conn.try_borrow_mut() {
if !d.is_null() {
unsafe {
let img = XFixesGetCursorImage(**d);
if !img.is_null() && hcursor == (*img).cursor_serial as u64 {
let mut cd: CursorData = Default::default();
cd.hotx = (*img).xhot as _;
cd.hoty = (*img).yhot as _;
cd.width = (*img).width as _;
cd.height = (*img).height as _;
// to-do: how about if it is 0
cd.id = (*img).cursor_serial as _;
let pixels =
std::slice::from_raw_parts((*img).pixels, (cd.width * cd.height) as _);
// cd.colors.resize(pixels.len() * 4, 0);
let mut cd_colors = vec![0_u8; pixels.len() * 4];
for y in 0..cd.height {
for x in 0..cd.width {
let pos = (y * cd.width + x) as usize;
let p = pixels[pos];
let a = (p >> 24) & 0xff;
let r = (p >> 16) & 0xff;
let g = (p >> 8) & 0xff;
let b = (p >> 0) & 0xff;
if a == 0 {
continue;
}
let pos = pos * 4;
cd_colors[pos] = r as _;
cd_colors[pos + 1] = g as _;
cd_colors[pos + 2] = b as _;
cd_colors[pos + 3] = a as _;
}
}
cd.colors = cd_colors.into();
res = Some(cd);
}
if !img.is_null() {
XFree(img as _);
}
}
}
}
});
match res {
Some(x) => Ok(x),
_ => bail!("Failed to get cursor image of {}", hcursor),
}
}
fn start_uinput_service() {
use crate::server::uinput::service;
std::thread::spawn(|| {
service::start_service_control();
});
std::thread::spawn(|| {
service::start_service_keyboard();
});
std::thread::spawn(|| {
service::start_service_mouse();
});
}
#[inline]
fn try_start_server_(user: Option<(String, String)>) -> ResultType<Option<Child>> {
if user.is_some() {
run_as_user(vec!["--server"], user)
} else {
Ok(Some(crate::run_me(vec!["--server"])?))
}
}
#[inline]
fn start_server(user: Option<(String, String)>, server: &mut Option<Child>) {
match try_start_server_(user) {
Ok(ps) => *server = ps,
Err(err) => {
log::error!("Failed to start server: {}", err);
}
}
}
fn stop_server(server: &mut Option<Child>) {
if let Some(mut ps) = server.take() {
allow_err!(ps.kill());
sleep_millis(30);
match ps.try_wait() {
Ok(Some(_status)) => {}
Ok(None) => {
let _res = ps.wait();
}
Err(e) => log::error!("error attempting to wait: {e}"),
}
}
}
fn set_x11_env(desktop: &Desktop) {
log::info!("DISPLAY: {}", desktop.display);
log::info!("XAUTHORITY: {}", desktop.xauth);
if !desktop.display.is_empty() {
std::env::set_var("DISPLAY", &desktop.display);
}
if !desktop.xauth.is_empty() {
std::env::set_var("XAUTHORITY", &desktop.xauth);
}
}
#[inline]
fn stop_rustdesk_servers() {
let _ = run_cmds(&format!(
r##"ps -ef | grep -E 'rustdesk +--server' | awk '{{printf("kill -9 %d\n", $2)}}' | bash"##,
));
}
#[inline]
fn stop_subprocess() {
let _ = run_cmds(&format!(
r##"ps -ef | grep '/etc/rustdesk/xorg.conf' | grep -v grep | awk '{{printf("kill -9 %d\n", $2)}}' | bash"##,
));
let _ = run_cmds(&format!(
r##"ps -ef | grep -E 'rustdesk +--cm-no-ui' | grep -v grep | awk '{{printf("kill -9 %d\n", $2)}}' | bash"##,
));
}
fn should_start_server(
try_x11: bool,
uid: &mut String,
desktop: &Desktop,
cm0: &mut bool,
last_restart: &mut Instant,
server: &mut Option<Child>,
) -> bool {
let cm = get_cm();
let mut start_new = false;
let mut should_kill = false;
if desktop.is_headless() {
if !uid.is_empty() {
// From having a monitor to not having a monitor.
*uid = "".to_owned();
should_kill = true;
}
} else if desktop.uid != *uid && !desktop.uid.is_empty() {
*uid = desktop.uid.clone();
if try_x11 {
set_x11_env(&desktop);
}
should_kill = true;
}
if !should_kill
&& !cm
&& ((*cm0 && last_restart.elapsed().as_secs() > 60)
|| last_restart.elapsed().as_secs() > 3600)
{
// restart server if new connections all closed, or every one hour,
// as a workaround to resolve "SpotUdp" (dns resolve)
// and x server get displays failure issue
should_kill = true;
log::info!("restart server");
}
if should_kill {
if let Some(ps) = server.as_mut() {
allow_err!(ps.kill());
sleep_millis(30);
*last_restart = Instant::now();
}
}
if let Some(ps) = server.as_mut() {
match ps.try_wait() {
Ok(Some(_)) => {
*server = None;
start_new = true;
}
_ => {}
}
} else {
start_new = true;
}
*cm0 = cm;
start_new
}
// to-do: stop_server(&mut user_server); may not stop child correctly
// stop_rustdesk_servers() is just a temp solution here.
fn force_stop_server() {
stop_rustdesk_servers();
sleep_millis(super::SERVICE_INTERVAL);
}
pub fn start_os_service() {
check_if_stop_service();
stop_rustdesk_servers();
stop_subprocess();
start_uinput_service();
std::thread::spawn(|| {
allow_err!(crate::ipc::start(crate::POSTFIX_SERVICE));
});
let running = Arc::new(AtomicBool::new(true));
let r = running.clone();
let mut desktop = Desktop::default();
let mut sid = "".to_owned();
let mut uid = "".to_owned();
let mut server: Option<Child> = None;
let mut user_server: Option<Child> = None;
if let Err(err) = ctrlc::set_handler(move || {
r.store(false, Ordering::SeqCst);
}) {
println!("Failed to set Ctrl-C handler: {}", err);
}
let mut cm0 = false;
let mut last_restart = Instant::now();
while running.load(Ordering::SeqCst) {
desktop.refresh();
// Duplicate logic here with should_start_server
// Login wayland will try to start a headless --server.
if desktop.username == "root" || !desktop.is_wayland() || desktop.is_login_wayland() {
// try kill subprocess "--server"
stop_server(&mut user_server);
// try start subprocess "--server"
if should_start_server(
true,
&mut uid,
&desktop,
&mut cm0,
&mut last_restart,
&mut server,
) {
stop_subprocess();
force_stop_server();
start_server(None, &mut server);
}
} else if desktop.username != "" {
// try kill subprocess "--server"
stop_server(&mut server);
// try start subprocess "--server"
if should_start_server(
false,
&mut uid,
&desktop,
&mut cm0,
&mut last_restart,
&mut user_server,
) {
stop_subprocess();
force_stop_server();
start_server(
Some((desktop.uid.clone(), desktop.username.clone())),
&mut user_server,
);
}
} else {
force_stop_server();
stop_server(&mut user_server);
stop_server(&mut server);
}
let keeps_headless = sid.is_empty() && desktop.is_headless();
let keeps_session = sid == desktop.sid;
if keeps_headless || keeps_session {
// for fixing https://github.com/rustdesk/rustdesk/issues/3129 to avoid too much dbus calling,
sleep_millis(500);
} else {
sleep_millis(super::SERVICE_INTERVAL);
}
if !desktop.is_headless() {
sid = desktop.sid.clone();
}
}
if let Some(ps) = user_server.take().as_mut() {
allow_err!(ps.kill());
}
if let Some(ps) = server.take().as_mut() {
allow_err!(ps.kill());
}
log::info!("Exit");
}
#[inline]
pub fn get_active_user_id_name() -> (String, String) {
let vec_id_name = get_values_of_seat0(&[1, 2]);
(vec_id_name[0].clone(), vec_id_name[1].clone())
}
#[inline]
pub fn get_active_userid() -> String {
get_values_of_seat0(&[1])[0].clone()
}
fn get_cm() -> bool {
if let Ok(output) = Command::new("ps").args(vec!["aux"]).output() {
for line in String::from_utf8_lossy(&output.stdout).lines() {
if line.contains(&format!(
"{} --cm",
std::env::current_exe()
.unwrap_or("".into())
.to_string_lossy()
)) {
return true;
}
}
}
false
}
pub fn is_login_wayland() -> bool {
if let Ok(contents) = std::fs::read_to_string("/etc/gdm3/custom.conf") {
contents.contains("#WaylandEnable=false") || contents.contains("WaylandEnable=true")
} else if let Ok(contents) = std::fs::read_to_string("/etc/gdm/custom.conf") {
contents.contains("#WaylandEnable=false") || contents.contains("WaylandEnable=true")
} else {
false
}
}
#[inline]
pub fn current_is_wayland() -> bool {
return is_desktop_wayland() && unsafe { UNMODIFIED };
}
// to-do: test the other display manager
fn _get_display_manager() -> String {
if let Ok(x) = std::fs::read_to_string("/etc/X11/default-display-manager") {
if let Some(x) = x.split("/").last() {
return x.to_owned();
}
}
"gdm3".to_owned()
}
#[inline]
pub fn get_active_username() -> String {
get_values_of_seat0(&[2])[0].clone()
}
pub fn get_user_home_by_name(username: &str) -> Option<PathBuf> {
return match get_user_by_name(username) {
None => None,
Some(user) => {
let home = user.home_dir();
if Path::is_dir(home) {
Some(PathBuf::from(home))
} else {
None
}
}
};
}
pub fn get_active_user_home() -> Option<PathBuf> {
let username = get_active_username();
if !username.is_empty() {
match get_user_home_by_name(&username) {
None => {
// fallback to most common default pattern
let home = PathBuf::from(format!("/home/{}", username));
if home.exists() {
return Some(home);
}
}
Some(home) => {
return Some(home);
}
}
}
None
}
pub fn get_env_var(k: &str) -> String {
match std::env::var(k) {
Ok(v) => v,
Err(_e) => "".to_owned(),
}
}
// Headless is enabled, always return true.
pub fn is_prelogin() -> bool {
let n = get_active_userid().len();
n < 4 && n > 1
}
pub fn is_root() -> bool {
crate::username() == "root"
}
fn is_opensuse() -> bool {
if let Ok(res) = run_cmds("cat /etc/os-release | grep opensuse") {
if !res.is_empty() {
return true;
}
}
false
}
pub fn run_as_user(arg: Vec<&str>, user: Option<(String, String)>) -> ResultType<Option<Child>> {
let (uid, username) = match user {
Some(id_name) => id_name,
None => get_active_user_id_name(),
};
let cmd = std::env::current_exe()?;
if uid.is_empty() {
bail!("No valid uid");
}
let xdg = &format!("XDG_RUNTIME_DIR=/run/user/{}", uid) as &str;
let mut args = vec![xdg, "-u", &username, cmd.to_str().unwrap_or("")];
args.append(&mut arg.clone());
// -E required for opensuse
if is_opensuse() {
args.insert(0, "-E");
}
let task = Command::new("sudo").args(args).spawn()?;
Ok(Some(task))
}
pub fn get_pa_monitor() -> String {
get_pa_sources()
.drain(..)
.map(|x| x.0)
.filter(|x| x.contains("monitor"))
.next()
.unwrap_or("".to_owned())
}
pub fn get_pa_source_name(desc: &str) -> String {
get_pa_sources()
.drain(..)
.filter(|x| x.1 == desc)
.map(|x| x.0)
.next()
.unwrap_or("".to_owned())
}
pub fn get_pa_sources() -> Vec<(String, String)> {
use pulsectl::controllers::*;
let mut out = Vec::new();
match SourceController::create() {
Ok(mut handler) => {
if let Ok(devices) = handler.list_devices() {
for dev in devices.clone() {
out.push((
dev.name.unwrap_or("".to_owned()),
dev.description.unwrap_or("".to_owned()),
));
}
}
}
Err(err) => {
log::error!("Failed to get_pa_sources: {:?}", err);
}
}
out
}
pub fn get_default_pa_source() -> Option<(String, String)> {
use pulsectl::controllers::*;
match SourceController::create() {
Ok(mut handler) => {
if let Ok(dev) = handler.get_default_device() {
return Some((
dev.name.unwrap_or("".to_owned()),
dev.description.unwrap_or("".to_owned()),
));
}
}
Err(err) => {
log::error!("Failed to get_pa_source: {:?}", err);
}
}
None
}
pub fn lock_screen() {
Command::new("xdg-screensaver").arg("lock").spawn().ok();
}
pub fn toggle_blank_screen(_v: bool) {
// https://unix.stackexchange.com/questions/17170/disable-keyboard-mouse-input-on-unix-under-x
}
pub fn block_input(_v: bool) -> bool {
true
}
pub fn is_installed() -> bool {
if let Ok(p) = std::env::current_exe() {
p.to_str().unwrap_or_default().starts_with("/usr")
} else {
false
}
}
pub(super) fn get_env_tries(name: &str, uid: &str, process: &str, n: usize) -> String {
for _ in 0..n {
let x = get_env(name, uid, process);
if !x.is_empty() {
return x;
}
sleep_millis(300);
}
"".to_owned()
}
#[inline]
fn get_env(name: &str, uid: &str, process: &str) -> String {
let cmd = format!("ps -u {} -f | grep '{}' | grep -v 'grep' | tail -1 | awk '{{print $2}}' | xargs -I__ cat /proc/__/environ 2>/dev/null | tr '\\0' '\\n' | grep '^{}=' | tail -1 | sed 's/{}=//g'", uid, process, name, name);
if let Ok(x) = run_cmds(&cmd) {
x.trim_end().to_string()
} else {
"".to_owned()
}
}
#[inline]
fn get_env_from_pid(name: &str, pid: &str) -> String {
let cmd = format!("cat /proc/{}/environ 2>/dev/null | tr '\\0' '\\n' | grep '^{}=' | tail -1 | sed 's/{}=//g'", pid, name, name);
if let Ok(x) = run_cmds(&cmd) {
x.trim_end().to_string()
} else {
"".to_owned()
}
}
#[link(name = "gtk-3")]
extern "C" {
fn gtk_main_quit();
}
pub fn quit_gui() {
unsafe { gtk_main_quit() };
}
pub fn exec_privileged(args: &[&str]) -> ResultType<Child> {
Ok(Command::new("pkexec").args(args).spawn()?)
}
pub fn check_super_user_permission() -> ResultType<bool> {
let file = "/usr/share/rustdesk/files/polkit";
let arg;
if Path::new(file).is_file() {
arg = file;
} else {
arg = "echo";
}
// https://github.com/rustdesk/rustdesk/issues/2756
if let Ok(status) = Command::new("pkexec").arg(arg).status() {
Ok(status.code() != Some(126))
} else {
Ok(true)
}
}
pub fn elevate(args: Vec<&str>) -> ResultType<bool> {
let cmd = std::env::current_exe()?;
match cmd.to_str() {
Some(cmd) => {
let mut args_with_exe = vec![cmd];
args_with_exe.append(&mut args.clone());
// -E required for opensuse
if is_opensuse() {
args_with_exe.insert(0, "-E");
}
let res = match exec_privileged(&args_with_exe)?.wait() {
Ok(status) => {
if status.success() {
true
} else {
log::error!(
"Failed to wait install process, process status: {:?}",
status
);
false
}
}
Err(e) => {
log::error!("Failed to wait install process, error: {}", e);
false
}
};
Ok(res)
}
None => {
hbb_common::bail!("Failed to get current exe as str");
}
}
}
type GtkSettingsPtr = *mut c_void;
type GObjectPtr = *mut c_void;
#[link(name = "gtk-3")]
extern "C" {
// fn gtk_init(argc: *mut c_int, argv: *mut *mut c_char);
fn gtk_settings_get_default() -> GtkSettingsPtr;
}
#[link(name = "gobject-2.0")]
extern "C" {
fn g_object_get(object: GObjectPtr, first_property_name: *const c_char, ...);
}
pub fn get_double_click_time() -> u32 {
// GtkSettings *settings = gtk_settings_get_default ();
// g_object_get (settings, "gtk-double-click-time", &double_click_time, NULL);
unsafe {
let mut double_click_time = 0u32;
let property = std::ffi::CString::new("gtk-double-click-time").unwrap();
let settings = gtk_settings_get_default();
g_object_get(
settings,
property.as_ptr(),
&mut double_click_time as *mut u32,
0 as *const c_void,
);
double_click_time
}
}
#[inline]
fn get_width_height_from_captures<'t>(caps: &Captures<'t>) -> Option<(i32, i32)> {
match (caps.name("width"), caps.name("height")) {
(Some(width), Some(height)) => {
match (
width.as_str().parse::<i32>(),
height.as_str().parse::<i32>(),
) {
(Ok(width), Ok(height)) => {
return Some((width, height));
}
_ => {}
}
}
_ => {}
}
None
}
#[inline]
fn get_xrandr_conn_pat(name: &str) -> String {
format!(
r"{}\s+connected.+?(?P<width>\d+)x(?P<height>\d+)\+(?P<x>\d+)\+(?P<y>\d+).*?\n",
name
)
}
pub fn resolutions(name: &str) -> Vec<Resolution> {
let resolutions_pat = r"(?P<resolutions>(\s*\d+x\d+\s+\d+.*\n)+)";
let connected_pat = get_xrandr_conn_pat(name);
let mut v = vec![];
if let Ok(re) = Regex::new(&format!("{}{}", connected_pat, resolutions_pat)) {
match run_cmds("xrandr --query | tr -s ' '") {
Ok(xrandr_output) => {
// There'are different kinds of xrandr output.
/*
1.
Screen 0: minimum 320 x 175, current 1920 x 1080, maximum 1920 x 1080
default connected 1920x1080+0+0 0mm x 0mm
1920x1080 10.00*
1280x720 25.00
1680x1050 60.00
Virtual2 disconnected (normal left inverted right x axis y axis)
Virtual3 disconnected (normal left inverted right x axis y axis)
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
eDP-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 193mm
1920x1080 60.01*+ 60.01 59.97 59.96 59.93
1680x1050 59.95 59.88
1600x1024 60.17
XWAYLAND0 connected primary 1920x984+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
Virtual1 connected primary 1920x984+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
HDMI-0 connected (normal left inverted right x axis y axis)
rdp0 connected primary 1920x1080+0+0 0mm x 0mm
*/
if let Some(caps) = re.captures(&xrandr_output) {
if let Some(resolutions) = caps.name("resolutions") {
let resolution_pat =
r"\s*(?P<width>\d+)x(?P<height>\d+)\s+(?P<rates>(\d+\.\d+\D*)+)\s*\n";
let resolution_re = Regex::new(&format!(r"{}", resolution_pat)).unwrap();
for resolution_caps in resolution_re.captures_iter(resolutions.as_str()) {
if let Some((width, height)) =
get_width_height_from_captures(&resolution_caps)
{
let resolution = Resolution {
width,
height,
..Default::default()
};
if !v.contains(&resolution) {
v.push(resolution);
}
}
}
}
}
}
Err(e) => log::error!("Failed to run xrandr query, {}", e),
}
}
v
}
pub fn current_resolution(name: &str) -> ResultType<Resolution> {
let xrandr_output = run_cmds("xrandr --query | tr -s ' '")?;
let re = Regex::new(&get_xrandr_conn_pat(name))?;
if let Some(caps) = re.captures(&xrandr_output) {
if let Some((width, height)) = get_width_height_from_captures(&caps) {
return Ok(Resolution {
width,
height,
..Default::default()
});
}
}
bail!("Failed to find current resolution for {}", name);
}
pub fn change_resolution_directly(name: &str, width: usize, height: usize) -> ResultType<()> {
Command::new("xrandr")
.args(vec![
"--output",
name,
"--mode",
&format!("{}x{}", width, height),
])
.spawn()?;
Ok(())
}
mod desktop {
use super::*;
pub const XFCE4_PANEL: &str = "xfce4-panel";
pub const GNOME_SESSION_BINARY: &str = "gnome-session-binary";
pub const SDDM_GREETER: &str = "sddm-greeter";
pub const PLASMA_X11: &str = "startplasma-x11";
#[derive(Debug, Clone, Default)]
pub struct Desktop {
pub sid: String,
pub username: String,
pub uid: String,
pub protocal: String,
pub display: String,
pub xauth: String,
pub is_rustdesk_subprocess: bool,
}
impl Desktop {
#[inline]
pub fn is_wayland(&self) -> bool {
self.protocal == DISPLAY_SERVER_WAYLAND
}
#[inline]
pub fn is_login_wayland(&self) -> bool {
super::is_gdm_user(&self.username) && self.protocal == DISPLAY_SERVER_WAYLAND
}
#[inline]
pub fn is_headless(&self) -> bool {
self.sid.is_empty() || self.is_rustdesk_subprocess
}
fn get_display(&mut self) {
let display_envs = vec![GNOME_SESSION_BINARY, XFCE4_PANEL, SDDM_GREETER, PLASMA_X11];
for diplay_env in display_envs {
self.display = get_env_tries("DISPLAY", &self.uid, diplay_env, 10);
if !self.display.is_empty() {
break;
}
}
if self.display.is_empty() {
self.display = Self::get_display_by_user(&self.username);
}
if self.display.is_empty() {
self.display = ":0".to_owned();
}
self.display = self
.display
.replace(&whoami::hostname(), "")
.replace("localhost", "");
}
fn get_xauth_from_xorg(&mut self) {
if let Ok(output) = run_cmds(&format!(
"ps -u {} -f | grep 'Xorg' | grep -v 'grep'",
&self.uid
)) {
for line in output.lines() {
let mut auth_found = false;
for v in line.split_whitespace() {
if v == "-auth" {
auth_found = true;
} else if auth_found {
if std::path::Path::new(v).is_absolute()
&& std::path::Path::new(v).exists()
{
self.xauth = v.to_string();
} else {
if let Some(pid) = line.split_whitespace().nth(1) {
let mut base_dir: String = String::from("/home"); // default pattern
let home_dir = get_env_from_pid("HOME", pid);
if home_dir.is_empty() {
if let Some(home) = get_user_home_by_name(&self.username) {
base_dir = home.as_path().to_string_lossy().to_string();
};
} else {
base_dir = home_dir;
}
if Path::new(&base_dir).exists() {
self.xauth = format!("{}/{}", base_dir, v);
};
} else {
// unreachable!
}
}
return;
}
}
}
}
}
fn get_xauth(&mut self) {
// try by direct access to window manager process by name
let display_envs = vec![GNOME_SESSION_BINARY, XFCE4_PANEL, SDDM_GREETER, PLASMA_X11];
for diplay_env in display_envs {
self.xauth = get_env_tries("XAUTHORITY", &self.uid, diplay_env, 10);
if !self.xauth.is_empty() {
break;
}
}
// get from Xorg process, parameter and environment
if self.xauth.is_empty() {
self.get_xauth_from_xorg();
}
// fallback to default file name
if self.xauth.is_empty() {
let gdm = format!("/run/user/{}/gdm/Xauthority", self.uid);
self.xauth = if std::path::Path::new(&gdm).exists() {
gdm
} else {
let username = &self.username;
match get_user_home_by_name(username) {
None => {
if username == "root" {
format!("/{}/.Xauthority", username)
} else {
let tmp = format!("/home/{}/.Xauthority", username);
if std::path::Path::new(&tmp).exists() {
tmp
} else {
format!("/var/lib/{}/.Xauthority", username)
}
}
}
Some(home) => {
format!(
"{}/.Xauthority",
home.as_path().to_string_lossy().to_string()
)
}
}
};
}
}
fn get_display_by_user(user: &str) -> String {
// log::debug!("w {}", &user);