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remove citadel-tools from citadel repo

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This commit is contained in:
Bruce Leidl 2018-12-31 18:47:11 -05:00
parent 5839cd3cc5
commit ca515c3d26
42 changed files with 0 additions and 7155 deletions
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2
citadel-tools/.gitignore vendored
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@ -1,2 +0,0 @@
**/target/
**/*.rs.bk

242
citadel-tools/citadel-appimg/Cargo.lock generated
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@ -1,242 +0,0 @@
[[package]]
name = "ansi_term"
version = "0.11.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
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[[package]]
name = "atty"
version = "0.2.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
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[[package]]
name = "backtrace"
version = "0.3.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
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name = "backtrace-sys"
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source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
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name = "bitflags"
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source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "cc"
version = "1.0.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
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name = "cfg-if"
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name = "citadel-appimg"
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10
citadel-tools/citadel-appimg/Cargo.toml
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@ -1,10 +0,0 @@
[package]
name = "citadel-appimg"
version = "0.1.0"
authors = ["Bruce Leidl <bruce@subgraph.com>"]
homepage = "http://github.com/subgraph/citadel"
[dependencies]
clap = "2.30.0"
failure = "0.1.1"
lazy_static = "1.0.0"

216
citadel-tools/citadel-appimg/src/appimg.rs
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@ -1,216 +0,0 @@
use std::path::{Path,PathBuf};
use std::fs::{self,File};
use std::io::{BufRead,BufReader};
use Result;
use systemd;
use util::*;
lazy_static!{
static ref APPIMG_BASE_PATH: PathBuf = PathBuf::from("/storage/appimg");
static ref USERDATA_BASE_PATH: PathBuf = PathBuf::from("/storage/user-data");
static ref SYSTEMD_UNIT_PATH: PathBuf = PathBuf::from("/run/systemd/system");
static ref SYSTEMD_NSPAWN_PATH: PathBuf = PathBuf::from("/run/systemd/nspawn");
}
#[derive(Debug)]
pub struct AppImg {
name: String,
config: AppImgConfig,
}
impl AppImg {
pub fn new(name: &str) -> Result<AppImg> {
let mut img = AppImg {
name: name.to_string(),
config: AppImgConfig::new(name),
};
img.load_config()?;
img.write_systemd_files()?;
Ok(img)
}
fn load_config(&mut self) -> Result<()> {
let mut path = APPIMG_BASE_PATH.join(&self.name);
path.push("config");
if !path.exists() {
return Ok(());
}
self.config.load(&path)?;
Ok(())
}
fn write_systemd_files(&self) -> Result<()> {
if !self.nspawn_config_path().exists() {
self.write_nspawn_config()?;
}
if !self.service_unit_path().exists() {
self.write_service_unit()?;
}
Ok(())
}
pub fn is_running(&self) -> bool {
systemd::sysctl_is_active(&self.service_unit_name())
}
pub fn start(&self) -> Result<()> {
if self.is_running() {
warn!("image {} is already running", self.name);
return Ok(());
}
self.write_nspawn_config()?;
self.write_service_unit()?;
systemd::systemctl_start(&self.service_unit_name());
Ok(())
}
pub fn stop(&self) {
if !self.is_running() {
warn!("image {} is not running", self.name);
return;
}
systemd::systemctl_stop(&self.service_unit_name());
}
pub fn name(&self) -> &str {
&self.name
}
fn nspawn_config_path(&self) -> PathBuf {
SYSTEMD_NSPAWN_PATH.join(&format!("{}.nspawn", self.name))
}
fn service_unit_name(&self) -> String {
format!("appimg-{}.service", self.name)
}
fn service_unit_path(&self) -> PathBuf {
SYSTEMD_UNIT_PATH.join(&format!("appimg-{}.service", self.name))
}
fn write_nspawn_config(&self) -> Result<()> {
let mut extra = String::new();
extra += &format!("Bind={}:/home/user\n", self.config.home());
if self.config.use_kvm() {
extra += "Bind=/dev/kvm\n";
}
if self.config.use_gpu() {
extra += "Bind=/dev/dri/renderD128\n";
}
let content = systemd::generate_nspawn_file(&extra);
fs::create_dir_all(SYSTEMD_NSPAWN_PATH.as_path())?;
write_string_to_file(&self.nspawn_config_path(), &content)?;
Ok(())
}
fn write_service_unit(&self) -> Result<()> {
let content = systemd::generate_service_file(&self.name);
fs::create_dir_all(&SYSTEMD_UNIT_PATH.as_path())?;
write_string_to_file(&self.service_unit_path(), &content)?;
Ok(())
}
}
#[derive(Debug)]
pub struct AppImgConfig {
img_name: String,
home: Option<String>,
kvm: bool,
gpu: bool,
}
const DEFAULT_HOME_PATH: &str = "/storage/user-data/primary-home";
impl AppImgConfig {
fn new(img_name: &str) -> AppImgConfig {
AppImgConfig{
img_name: img_name.to_string(),
home: None,
kvm: false,
gpu: false,
}
}
pub fn home(&self) -> String {
if let Some(ref name) = self.home {
if is_valid_name(name) {
let home_path = USERDATA_BASE_PATH.join(name);
return home_path.to_str().unwrap().to_string();
}
}
DEFAULT_HOME_PATH.to_string()
}
pub fn use_kvm(&self) -> bool {
self.kvm
}
pub fn use_gpu(&self) -> bool {
self.gpu
}
fn reset(&mut self) {
self.home = None;
self.kvm = false;
self.gpu = false;
}
fn load(&mut self, path: &Path) -> Result<()> {
self.reset();
let f = File::open(path)?;
let reader = BufReader::new(f);
for line in reader.lines() {
let line = line?;
let v = line.split('=').collect::<Vec<_>>();
if v.len() == 2 {
self.process_keyval(v[0].trim(), v[1].trim());
}
}
Ok(())
}
fn process_keyval(&mut self, k: &str, v: &str) {
match k {
"home" => {
if is_valid_name(v) {
let home_path = USERDATA_BASE_PATH.join(v);
if !home_path.is_dir() {
warn!("'home' value '{}' in config file of image {} refers to directory that doesn't exist", v, self.img_name);
}
self.home = Some(v.to_string());
} else {
warn!("Invalid home value '{}' in config file of image {}", v, self.img_name);
}
},
"use-kvm" => {
self.kvm = v == "yes";
},
"use-gpu" => {
self.gpu = v == "yes";
},
_ => {
warn!("unknown keyword '{}' in config file for image {}", k, self.img_name);
},
}
}
}

110
citadel-tools/citadel-appimg/src/main.rs
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@ -1,110 +0,0 @@
#[macro_use] extern crate failure;
#[macro_use] extern crate lazy_static;
extern crate clap;
macro_rules! warn {
($e:expr) => { println!("[!]: {}", $e); };
($fmt:expr, $($arg:tt)+) => { println!("[!]: {}", format!($fmt, $($arg)+)); };
}
mod appimg;
mod util;
mod systemd;
mod manager;
use failure::Error;
use clap::{App,Arg,ArgMatches,SubCommand};
use clap::AppSettings::*;
use std::process::exit;
use std::result;
pub type Result<T> = result::Result<T,Error>;
pub use appimg::AppImg;
use manager::ImageManager;
fn main() {
let matches = App::new("citadel-appimg")
.about("Subgraph Citadel application image management")
.settings(&[ArgRequiredElseHelp, ColoredHelp, DisableHelpSubcommand, DisableVersion, DeriveDisplayOrder])
.subcommand(SubCommand::with_name("list")
.about("Display list of application images"))
.subcommand(SubCommand::with_name("start")
.about("Launch an application image")
.arg(Arg::with_name("name")))
.subcommand(SubCommand::with_name("stop")
.about("Stop a running application image")
.arg(Arg::with_name("name").required(true)))
.subcommand(SubCommand::with_name("default")
.about("Set an application image as the default image to boot")
.arg(Arg::with_name("name").required(true)))
.subcommand(SubCommand::with_name("current")
.about("Set an application image as 'current'")
.arg(Arg::with_name("name").required(true)))
.get_matches();
let result = match matches.subcommand() {
("list", _) => list_cmd(),
("start", Some(m)) => start_cmd(m),
("stop", Some(m)) => stop_cmd(m),
("default", Some(m)) => default_cmd(m),
("current", Some(m)) => current_cmd(m),
_ => Ok(()),
};
if let Err(e) = result {
println!("{}", e);
exit(1);
}
}
fn list_cmd() -> Result<()> {
let manager = ImageManager::load()?;
manager.list()?;
Ok(())
}
fn start_cmd(matches: &ArgMatches) -> Result<()> {
let mut manager = ImageManager::load()?;
match matches.value_of("name") {
Some(name) => manager.start_image(name),
None => manager.start_default(),
}
}
fn stop_cmd(matches: &ArgMatches) -> Result<()> {
let name = matches.value_of("name").unwrap();
let mut manager = ImageManager::load()?;
manager.stop_image(name)?;
Ok(())
}
fn default_cmd(matches: &ArgMatches) -> Result<()> {
let name = matches.value_of("name").unwrap();
let mut manager = ImageManager::load()?;
if manager.image_exists(name) {
manager.set_default(name)?;
} else {
warn!("No image '{}' exists", name);
}
Ok(())
}
fn current_cmd(matches: &ArgMatches) -> Result<()> {
let name = matches.value_of("name").unwrap();
let mut manager = ImageManager::load()?;
if manager.image_exists(name) {
manager.set_current(name)?;
} else {
warn!("No image '{}' exists", name);
}
Ok(())
}

297
citadel-tools/citadel-appimg/src/manager.rs
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@ -1,297 +0,0 @@
use std::path::{Path,PathBuf};
use std::io::Write;
use std::fs;
use std::os::unix::fs::{OpenOptionsExt,symlink};
use std::collections::HashMap;
use AppImg;
use Result;
use util::*;
use systemd;
lazy_static!{
static ref APPIMG_BASE_PATH: PathBuf = PathBuf::from("/storage/appimg");
static ref APPIMG_RUN_PATH: PathBuf = PathBuf::from("/run/appimg");
}
const DESKTOPD_SERVICE: &str = "citadel-desktopd.service";
pub struct ImageManager {
images: HashMap<String, AppImg>,
default: Option<String>,
current: Option<String>,
}
impl ImageManager {
fn new() -> Result<ImageManager> {
let default = default_appimg()?;
let current = current_appimg()?;
Ok(ImageManager {
images: HashMap::new(),
default, current,
})
}
pub fn load() -> Result<ImageManager> {
let mut manager = ImageManager::new()?;
for dent in fs::read_dir(APPIMG_BASE_PATH.as_path())? {
let path = dent?.path();
manager.process_path(&path)?;
}
Ok(manager)
}
fn process_path(&mut self, path: &Path) -> Result<()> {
let meta = path.symlink_metadata()?;
if !meta.is_dir() {
return Ok(())
}
let name = path_filename(path);
if !is_valid_name(name) {
warn!("ignoring directory in appimg storage which has invalid appimg name: {}", name);
return Ok(())
}
let appimg = AppImg::new(name)?;
self.images.insert(appimg.name().to_string(), appimg);
Ok(())
}
pub fn list(&self) -> Result<()> {
for img in self.images.values() {
let cur = if self.is_current(img) { "(current)" } else { "" };
let def = if self.is_default(img) { "(default)" } else { "" };
let run = if img.is_running() { "[running]"} else {""};
println!(" {} {} {} {}", img.name(), run, def, cur);
}
Ok(())
}
pub fn start_default(&mut self) -> Result<()> {
let name = match self.default {
Some(ref s) => s.clone(),
None => bail!("No default image to start"),
};
self.start_image(&name)
}
pub fn start_image(&mut self, name: &str) -> Result<()> {
// if current is not set, set it to this instance
let set_as_current = self.current.is_none();
if set_as_current {
self.set_current_target(name)?;
}
match self.images.get(name) {
Some(img) => {
img.start()?;
},
None => {
// XXX if set_as_current do something here to undo what set_current has done
warn!("Cannot start '{}'. Image does not exist");
return Ok(())
},
}
if set_as_current {
systemd::systemctl_restart(DESKTOPD_SERVICE);
}
Ok(())
}
pub fn stop_image(&mut self, name: &str) -> Result<()> {
match self.images.get(name) {
Some(img) => img.stop(),
None => {
warn!("Cannot stop '{}'. Image does not exist");
return Ok(())
},
}
let current = match self.current {
Some(ref s) => s.clone(),
None => return Ok(()),
};
if current == name {
systemd::systemctl_stop(DESKTOPD_SERVICE);
let path = APPIMG_RUN_PATH.join("current.appimg");
if path.exists() {
fs::remove_file(&path)?;
}
if let Some(img_name) = self.find_running_image_name() {
self.set_current_target(&img_name)?;
systemd::systemctl_start(DESKTOPD_SERVICE);
}
}
Ok(())
}
fn find_running_image_name(&self) -> Option<String> {
for img in self.images.values() {
if img.is_running() {
return Some(img.name().to_string());
}
}
None
}
fn is_current(&self, img: &AppImg) -> bool {
self.same_name(img, &self.current)
}
fn is_default(&self, img: &AppImg) -> bool {
self.same_name(img, &self.default)
}
fn same_name(&self, img: &AppImg, name: &Option<String>) -> bool {
if let Some(ref name) = *name {
name == img.name()
} else {
false
}
}
pub fn image_exists(&self, name: &str) -> bool {
self.images.contains_key(name)
}
pub fn set_default(&mut self, name: &str) -> Result<()> {
if !is_valid_name(name) {
warn!("{} is not a valid image name", name);
return Ok(())
}
if let Some(ref default) = self.default {
if default == name {
warn!("{} is already default appimg", name);
return Ok(())
}
}
let path = APPIMG_BASE_PATH.join("default.appimg");
if path.exists() {
fs::remove_file(&path)?;
}
symlink(name, &path)?;
self.default = Some(name.to_string());
Ok(())
}
pub fn set_current(&mut self, name: &str) -> Result<()> {
{
let img = match self.images.get(name) {
Some(img) => img,
None => {
warn!("Cannot set {} as current, no image with that name exists", name);
return Ok(());
},
};
if self.is_current(img) {
warn!("Image {} is already current image", name);
return Ok(());
}
if !img.is_running() {
img.start()?;
}
}
self.set_current_target(name)?;
systemd::systemctl_restart(DESKTOPD_SERVICE);
Ok(())
}
fn set_current_target(&mut self, name: &str) -> Result<()> {
if !is_valid_name(name) {
warn!("{} is not a valid image name", name);
return Ok(())
}
if let Some(ref current) = self.current {
if current == name {
warn!("{} is already current appimg", name);
return Ok(())
}
}
fs::create_dir_all(APPIMG_RUN_PATH.as_path())?;
let path = APPIMG_RUN_PATH.join("current.appimg");
let target = APPIMG_BASE_PATH.join(name);
if path.exists() {
fs::remove_file(&path)?;
}
symlink(&target, &path)?;
let script = format!("#!/bin/bash\nmachinectl -E DESKTOP_STARTUP_ID=${{DESKTOP_STARTUP_ID}} shell user@{} /usr/libexec/launch $@\n", name);
let script_path = APPIMG_RUN_PATH.join("run-in-image");
let mut f = fs::OpenOptions::new()
.create(true)
.write(true)
.mode(0o755)
.open(&script_path)?;
f.write_all(script.as_bytes())?;
self.current = Some(name.to_string());
Ok(())
}
}
fn appimg_symlink(symlink: &Path) -> Result<Option<String>> {
if !symlink.exists() {
return Ok(None);
}
if !symlink.symlink_metadata()?.file_type().is_symlink() {
bail!("{} exists but it is not a symlink", symlink.display());
}
let link = fs::read_link(&symlink)?;
let appimg_name = appimg_name_for_symlink_target(&link)?;
if !is_valid_name(&appimg_name) {
bail!("symlink {} points to a directory with a name ({}) that is not a valid appimg name", symlink.display(), appimg_name);
}
Ok(Some(appimg_name))
}
fn default_appimg() -> Result<Option<String>> {
appimg_symlink(&APPIMG_BASE_PATH.join("default.appimg"))
}
fn current_appimg() -> Result<Option<String>> {
appimg_symlink(&APPIMG_RUN_PATH.join("current.appimg"))
}
///
/// Returns a name only if target points to some subdirectory of APPIMG_BASE_PATH
///
fn appimg_name_for_symlink_target(target: &Path) -> Result<String> {
let path = if target.is_absolute() {
target.to_path_buf()
} else if target.components().count() == 1 {
APPIMG_BASE_PATH.join(target)
} else {
bail!("symlink target has invalid value: {}", target.display())
};
match path.parent() {
Some(parent) => {
if parent != APPIMG_BASE_PATH.as_path() {
bail!("symlink target points outside of /storage/appimg directory");
}
},
None => {
bail!("symlink target has invalid value (no parent): {}", target.display())
},
};
if !path.is_dir() {
bail!("symlink target {} is not a directory", path.display());
}
Ok(path_filename(&path).to_string())
}

113
citadel-tools/citadel-appimg/src/systemd.rs
View File

@ -1,113 +0,0 @@
use std::process::Command;
const SYSTEMCTL_PATH: &str = "/usr/bin/systemctl";
pub fn sysctl_is_active(name: &str) -> bool {
let mut cmd = Command::new(SYSTEMCTL_PATH);
cmd.arg("-q");
cmd.arg("is-active");
cmd.arg(name);
match cmd.status() {
Ok(status) => status.success(),
Err(e) => {
warn!("failed to execute /usr/bin/systemctl: {}", e);
false
}
}
}
pub fn systemctl_restart(name: &str) -> bool {
run_systemctl("restart", name)
}
pub fn systemctl_start(name: &str) -> bool {
run_systemctl("start", name)
}
pub fn systemctl_stop(name: &str) -> bool {
run_systemctl("stop", name)
}
fn run_systemctl(op: &str, name: &str) -> bool {
let mut cmd = Command::new(SYSTEMCTL_PATH);
cmd.arg(op);
cmd.arg(name);
match cmd.output() {
Err(e) => {
warn!("failed to execute /usr/bin/systemctl: {}", e);
false
}
Ok(output) => {
if !output.status.success() {
warn!("error running systemctl {}: {}", op, String::from_utf8(output.stderr).unwrap());
return false
}
true
}
}
}
pub fn generate_nspawn_file(extra_bind_mounts: &str) -> String {
NSPAWN_FILE_TEMPLATE.replace("$EXTRA_BIND_MOUNTS", extra_bind_mounts)
}
pub fn generate_service_file(appimg_name: &str) -> String {
APPIMG_SERVICE_TEMPLATE.replace("$APPIMG_NAME", appimg_name)
}
pub const NSPAWN_FILE_TEMPLATE: &str = r###"
[Exec]
Boot=true
Environment=IFCONFIG_IP=172.17.0.2/24
Environment=IFCONFIG_GW=172.17.0.1
[Files]
BindReadOnly=/usr/share/themes/Adapta
BindReadOnly=/usr/share/themes/Adapta-Eta
BindReadOnly=/usr/share/themes/Adapta-Nokto
BindReadOnly=/usr/share/themes/Adapta-Nokto-Eta
BindReadOnly=/usr/share/icons/Paper
BindReadOnly=/storage/citadel-state/resolv.conf:/etc/resolv.conf
#
# Bind mounts for sound and pulse audio
#
Bind=/dev/snd
Bind=/dev/shm
BindReadOnly=/run/user/1000/pulse:/run/user/host/pulse
BindReadOnly=/tmp/.X11-unix
BindReadOnly=/run/user/1000/wayland-0:/run/user/host/wayland-0
$EXTRA_BIND_MOUNTS
#
# Uncomment to enable kvm access in container
#
#Bind=/dev/kvm
#
# Uncomment to enable GPU access in container
#
#Bind=/dev/dri/renderD128
[Network]
Zone=clear
"###;
pub const APPIMG_SERVICE_TEMPLATE: &str = r###"
[Unit]
Description=Application Image $APPIMG_NAME instance
Wants=citadel-desktopd.service
[Service]
Environment=SYSTEMD_NSPAWN_SHARE_NS_IPC=1
ExecStart=/usr/bin/systemd-nspawn --quiet --keep-unit --machine=$APPIMG_NAME --link-journal=try-guest --directory=/storage/appimg/$APPIMG_NAME/rootfs
KillMode=mixed
Type=notify
RestartForceExitStatus=133
SuccessExitStatus=133
"###;

39
citadel-tools/citadel-appimg/src/util.rs
View File

@ -1,39 +0,0 @@
use std::io::Write;
use std::fs::File;
use std::path::Path;
use Result;
pub fn path_filename(path: &Path) -> &str {
if let Some(osstr) = path.file_name() {
if let Some(name) = osstr.to_str() {
return name;
}
}
""
}
pub fn write_string_to_file(path: &Path, s: &str) -> Result<()> {
let mut f = File::create(path)?;
f.write_all(s.as_bytes())?;
Ok(())
}
fn is_alphanum_or_dash(c: char) -> bool {
is_ascii(c) && (c.is_alphanumeric() || c == '-')
}
fn is_ascii(c: char) -> bool {
c as u32 <= 0x7F
}
fn is_first_char_alphabetic(s: &str) -> bool {
if let Some(c) = s.chars().next() {
return is_ascii(c) && c.is_alphabetic()
}
false
}
pub fn is_valid_name(name: &str) -> bool {
is_first_char_alphabetic(name) && name.chars().all(is_alphanum_or_dash)
}

479
citadel-tools/citadel-desktopd/Cargo.lock generated
View File

@ -1,479 +0,0 @@
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15
citadel-tools/citadel-desktopd/Cargo.toml
View File

@ -1,15 +0,0 @@
[package]
name = "citadel-desktopd"
version = "0.1.0"
authors = ["brl@subgraph.com"]
[dependencies]
failure = "0.1.1"
lazy_static = "1.0"
log = "0.4.0"
env_logger = "0.5.3"
inotify = "0.5"
toml = "0.4.5"
serde_derive = "1.0.27"
serde = "1.0.27"
nix = "0.10.0"

6
citadel-tools/citadel-desktopd/conf/citadel-desktopd.conf
View File

@ -1,6 +0,0 @@
[options]
exec_prefix="/usr/bin/realms run --"
target_directory="/home/citadel/.local/share/applications"
[[sources]]
path="/run/realms/current.realm/rootfs/usr/share/applications"

5
citadel-tools/citadel-desktopd/conf/citadel-desktopd.service
View File

@ -1,5 +0,0 @@
[Unit]
Description=Desktop Integration Manager
[Service]
ExecStart=/usr/libexec/citadel-desktopd /usr/share/citadel/citadel-desktopd.conf

120
citadel-tools/citadel-desktopd/src/config.rs
View File

@ -1,120 +0,0 @@
use std::path::{Path,PathBuf};
use std::fs::File;
use std::io::Read;
use Result;
use toml;
#[derive(Clone)]
pub struct Config {
exec_prefix: String,
target_directory: PathBuf,
source_paths: Vec<PathBuf>,
}
impl Config {
pub fn from_path<P: AsRef<Path>>(path: P) -> Result<Config> {
let toml = ConfigToml::from_path(path)?;
let config = toml.to_config()?;
Ok(config)
}
pub fn exec_prefix(&self) -> &str {
self.exec_prefix.as_ref()
}
pub fn target_directory(&self) -> &Path {
self.target_directory.as_ref()
}
pub fn source_paths(&self) -> &Vec<PathBuf> {
self.source_paths.as_ref()
}
}
#[derive(Deserialize)]
struct ConfigToml {
options: Option<Options>,
sources: Option<Vec<Source>>,
}
#[derive(Deserialize)]
struct Options {
exec_prefix: Option<String>,
target_directory: Option<String>,
}
impl Options {
fn exec_prefix(&self) -> Result<&str> {
match self.exec_prefix {
Some(ref s) => Ok(s.as_str()),
None => Err(format_err!("missing 'exec_prefix=' field")),
}
}
fn target_directory(&self) -> Result<&str> {
match self.target_directory {
Some(ref s) => Ok(s.as_str()),
None => Err(format_err!("missing 'target_directory=' field")),
}
}
}
#[derive(Deserialize,Clone)]
struct Source {
path: Option<String>,
}
impl Source {
fn path(&self) -> Result<&str> {
match self.path {
Some(ref s) => Ok(s.as_str()),
None => Err(format_err!("missing 'path=' field")),
}
}
}
fn load_as_string(path: &Path) -> Result<String> {
let mut f = File::open(path)?;
let mut buffer = String::new();
f.read_to_string(&mut buffer)?;
Ok(buffer)
}
impl ConfigToml {
fn from_path<P: AsRef<Path>>(path: P) -> Result<ConfigToml> {
let s = load_as_string(path.as_ref())?;
let config = toml::from_str::<ConfigToml>(&s)?;
Ok(config)
}
fn options(&self) -> Result<&Options> {
self.options.as_ref()
.ok_or(format_err!("missing '[options]' section"))
}
fn sources(&self) -> Result<Vec<Source>> {
match self.sources {
Some(ref srcs) => Ok(srcs.clone()),
None => Err(format_err!("missing '[[sources]]' section(s)")),
}
}
fn to_config(&self) -> Result<Config> {
let options = self.options()?;
let exec_prefix = options.exec_prefix()?.to_string() + " ";
let target_path = options.target_directory()?.to_string();
let target_directory = PathBuf::from(target_path);
let mut source_paths = Vec::new();
for src in self.sources()? {
let path = src.path()?;
source_paths.push(PathBuf::from(path));
}
Ok(Config{
exec_prefix,
target_directory,
source_paths,
})
}
}

188
citadel-tools/citadel-desktopd/src/desktop.rs
View File

@ -1,188 +0,0 @@
use std::io::Write;
use std::fs::File;
use std::path::Path;
use std::collections::HashMap;
use Result;
pub struct DesktopFile {
filename: String,
lines: Vec<Line>,
// map from key of key/value pair to index of line in lines vector
main_map: HashMap<String, usize>,
// map from group name to map of key/value -> index
groups: HashMap<String,HashMap<String,usize>>,
}
impl DesktopFile {
pub fn write_to_dir<P: AsRef<Path>>(&self, directory: P) -> Result<()> {
let mut path = directory.as_ref().to_path_buf();
path.push(self.filename.as_str());
let f = File::create(&path)?;
self.write_to(f)?;
Ok(())
}
pub fn write_to<W: Write>(&self, mut w: W) -> Result<()> {
for line in &self.lines {
line.write_to(&mut w)?;
}
Ok(())
}
pub fn filename(&self) -> &str {
self.filename.as_ref()
}
//
// Conditions for translating a .desktop entry
//
// Type=Application // Mandatory 'Type' key must be Application
// NotShowIn= // If 'NotShowIn' key is present, must not contain GNOME
// OnlyShowIn= // If 'OnlyShowIn' key is present, must contain 'GNOME'
// Terminal=false // If 'Terminal' key is present, must be false
// Hidden=false // If 'Hidden' key is present, must be false
//
pub fn is_showable(&self) -> bool {
self.is_application_type() && self.show_in_gnome() &&
!(self.needs_terminal() || self.is_hidden())
}
fn needs_terminal(&self) -> bool {
self.key_exists_and_not_false("Terminal")
}
fn is_application_type(&self) -> bool {
if let Some(t) = self.get_key_val("Type") {
return t == "Application"
}
false
}
fn show_in_gnome(&self) -> bool {
if self.key_exists("NotShowIn") && self.key_value_contains("NotShowIn", "GNOME") {
return false;
}
if self.key_exists("OnlyShowIn") && !self.key_value_contains("OnlyShowIn", "GNOME") {
return false;
}
true
}
fn key_value_contains(&self, key: &str, s: &str) -> bool {
match self.get_key_val(key) {
Some(val) => val.contains(s),
None => false,
}
}
fn key_exists(&self, key: &str) -> bool {
self.main_map.contains_key(key)
}
fn is_hidden(&self) -> bool {
self.key_exists_and_not_false("Hidden")
}
fn key_exists_and_not_false(&self, key: &str) -> bool {
if let Some(s) = self.get_key_val(key) {
if s != "false" {
return true;
}
}
false
}
fn get_key_val(&self, key: &str) -> Option<&str> {
if let Some(idx) = self.main_map.get(key) {
match self.lines[*idx] {
Line::KeyValue(_, ref v) => return Some(v),
ref line => panic!("Key lookup on '{}' returned wrong line type: {:?}", key, line),
}
}
None
}
pub fn new(filename: &str) -> DesktopFile {
DesktopFile {
filename: filename.to_string(),
lines: Vec::new(),
main_map: HashMap::new(),
groups: HashMap::new(),
}
}
pub fn add_line(&mut self, line: Line) {
if line.is_key_value_type() {
let idx = self.lines.len();
self.main_map.insert(line.get_key_string(), idx);
}
self.lines.push(line);
}
pub fn add_action_line(&mut self, action: &str, line: Line) {
if line.is_key_value_type() {
let idx = self.lines.len();
let map = self.groups.entry(action.to_string()).or_insert(HashMap::new());
map.insert(line.get_key_string(), idx);
}
self.lines.push(line);
}
}
#[derive(Debug)]
pub enum Line {
Empty,
Comment(String),
ExecLine(String),
KeyValue(String,String),
KeyLocaleValue(String,String,String),
DesktopHeader,
ActionHeader(String),
GroupHeader(String)
}
impl Line {
pub fn is_action_header(&self) -> bool {
match *self {
Line::ActionHeader(..) => true,
_ => false,
}
}
fn is_key_value_type(&self) -> bool {
match *self {
Line::KeyValue(..) | Line::KeyLocaleValue(..) => true,
_ => false,
}
}
fn get_key_string(&self) -> String {
match *self {
Line::KeyValue(ref k, ..) => k.to_string(),
Line::KeyLocaleValue(ref k, ref loc, ..) => format!("{}[{}]", k, loc),
_ => panic!("get_key_string() called on Line item which is not a key/value type"),
}
}
fn write_to<W: Write>(&self, mut w: W) -> Result<()> {
match *self {
Line::Empty => writeln!(w)?,
Line::Comment(ref s) => writeln!(w, "#{}", s)?,
Line::ExecLine(ref s) => writeln!(w, "Exec={}", s)?,
Line::KeyValue(ref k, ref v) => writeln!(w, "{}={}", k, v)?,
Line::KeyLocaleValue(ref k, ref loc, ref v) => writeln!(w, "{}[{}]={}", k, loc, v)?,
Line::DesktopHeader => writeln!(w, "[Desktop Entry]")?,
Line::ActionHeader(ref action) => writeln!(w, "[Desktop Action {}]", action)?,
Line::GroupHeader(..) => {},
}
Ok(())
}
}

120
citadel-tools/citadel-desktopd/src/desktop_file_sync.rs
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@ -1,120 +0,0 @@
use std::sync::{Arc,Mutex};
use std::path::Path;
use std::fs;
use failure::ResultExt;
use monitor::{DirectoryMonitor,MonitorEventHandler};
use parser::DesktopFileParser;
use config::Config;
use Result;
pub struct DesktopFileSync {
config: Config,
monitor: DirectoryMonitor,
}
impl DesktopFileSync {
pub fn new(config: Config) -> DesktopFileSync {
let handler = Arc::new(Mutex::new(SyncHandler::new(config.clone())));
let monitor = DirectoryMonitor::new(handler.clone());
DesktopFileSync {
config, monitor
}
}
pub fn clear_target_directory(&self) -> Result<()> {
let entries = fs::read_dir(self.config.target_directory())?;
for entry in entries {
let path = entry?.path();
if is_desktop_file(&path) {
fs::remove_file(&path).context(format!("remove_file({:?})", path))?;
}
}
Ok(())
}
pub fn sync_source(&mut self, src: &Path) -> Result<()> {
self.clear_target_directory()?;
self.sync_source_directory(src)?;
self.monitor.set_monitor_sources(&[src.to_path_buf()]);
Ok(())
}
fn sync_source_directory(&self, src: &Path) -> Result<()> {
let entries = fs::read_dir(src)?;
for entry in entries {
let path = entry?.path();
if is_desktop_file(path.as_path()) {
if let Err(e) = sync_desktop_file(path.as_path(), &self.config) {
info!("error syncing desktop file {:?}: {}", path, e);
}
}
}
Ok(())
}
}
struct SyncHandler {
config: Config,
}
impl SyncHandler {
fn new(config: Config) -> SyncHandler {
SyncHandler { config }
}
}
impl MonitorEventHandler for SyncHandler {
fn file_added(&self, path: &Path) -> Result<()> {
info!("file_added: {:?}", path);
if is_desktop_file(path) {
sync_desktop_file(path, &self.config)?;
}
Ok(())
}
fn file_removed(&self, path: &Path) -> Result<()> {
info!("file_removed: {:?}", path);
let filename = filename_from_path(path)?;
let target_path = self.config.target_directory().join(filename);
if target_path.exists() {
fs::remove_file(target_path.as_path())?;
}
Ok(())
}
}
fn sync_desktop_file(source: &Path, config: &Config) -> Result<()> {
if !is_desktop_file(source) {
return Err(format_err!("source path [{:?}] is not desktop file", source));
}
let df = DesktopFileParser::parse_from_path(source, config.exec_prefix())?;
if df.is_showable() {
df.write_to_dir(config.target_directory())?;
} else {
info!("ignoring {} as not showable", df.filename());
}
Ok(())
}
fn is_desktop_file(path: &Path) -> bool {
if let Some(ext) = path.extension() {
return ext == "desktop"
}
false
}
fn filename_from_path(path: &Path) -> Result<&str> {
let filename = match path.file_name() {
Some(name) => name,
None => return Err(format_err!("Path {:?} has no filename component", path)),
};
match filename.to_str() {
Some(s) => Ok(s),
None => Err(format_err!("Filename has invalid utf8 encoding")),
}
}

57
citadel-tools/citadel-desktopd/src/main.rs
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@ -1,57 +0,0 @@
#[macro_use] extern crate failure;
#[macro_use] extern crate lazy_static;
#[macro_use] extern crate log;
#[macro_use] extern crate serde_derive;
extern crate env_logger;
extern crate serde;
extern crate toml;
extern crate inotify;
extern crate nix;
mod desktop;
mod parser;
mod config;
mod monitor;
mod desktop_file_sync;
use std::result;
use std::process;
use failure::Error;
use desktop_file_sync::DesktopFileSync;
use config::Config;
pub type Result<T> = result::Result<T, Error>;
fn main() {
std::env::set_var("RUST_LOG", "info");
env_logger::init();
let mut args = std::env::args();
args.next();
if args.len() != 1 {
println!("expected config file argument");
process::exit(1);
}
let config_path = args.next().unwrap();
let config = match Config::from_path(&config_path) {
Err(e) => {
warn!("Failed to load configuration file: {}", e);
process::exit(1);
},
Ok(config) => config,
};
let src = config.source_paths().first().unwrap().clone();
let mut dfs = DesktopFileSync::new(config.clone());
if let Err(e) = dfs.sync_source(src.as_path()) {
warn!("error calling sync_source: {}", e);
}
loop {
std::thread::sleep(std::time::Duration::new(120, 0));
}
}

210
citadel-tools/citadel-desktopd/src/monitor.rs
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@ -1,210 +0,0 @@
use std::collections::HashMap;
use std::path::{Path,PathBuf};
use std::sync::{Arc,Mutex,Once,ONCE_INIT};
use std::sync::atomic::{AtomicBool,Ordering};
use std::thread::{self,JoinHandle};
use std::os::unix::thread::JoinHandleExt;
use std::io::ErrorKind;
use nix::libc;
use nix::sys::signal;
use inotify::{Events,Inotify,EventMask,WatchMask,Event,WatchDescriptor};
use Result;
pub trait MonitorEventHandler: Send+Sync {
fn file_added(&self, path: &Path) -> Result<()> { let _ = path; Ok(()) }
fn file_removed(&self, path: &Path) -> Result<()> { let _ = path; Ok(()) }
fn directory_added(&self, path: &Path) -> Result<()> { let _ = path; Ok(()) }
fn directory_removed(&self, path: &Path) -> Result<()> { let _ = path; Ok(()) }
}
pub struct DirectoryMonitor {
event_handler: Arc<Mutex<MonitorEventHandler>>,
worker_handle: Option<WorkerHandle>,
}
impl DirectoryMonitor {
pub fn new(handler: Arc<Mutex<MonitorEventHandler>>) -> DirectoryMonitor {
initialize();
DirectoryMonitor {
event_handler: handler,
worker_handle: None,
}
}
pub fn set_monitor_sources(&mut self, sources: &[PathBuf]) {
if let Some(handle) = self.worker_handle.take() {
handle.stop();
handle.wait();
}
let sources = Vec::from(sources);
let h = MonitorWorker::start_worker(sources, self.event_handler.clone());
self.worker_handle = Some(h);
}
}
struct MonitorWorker {
descriptors: HashMap<WatchDescriptor,PathBuf>,
inotify: Inotify,
exit_flag: Arc<AtomicBool>,
watch_paths: Vec<PathBuf>,
handler: Arc<Mutex<MonitorEventHandler>>,
}
impl MonitorWorker {
fn start_worker(watch_paths: Vec<PathBuf>, handler: Arc<Mutex<MonitorEventHandler>>) -> WorkerHandle {
let exit_flag = Arc::new(AtomicBool::new(false));
let flag_clone = exit_flag.clone();
let jhandle = thread::spawn(move || {
let mut worker = match MonitorWorker::new(watch_paths, flag_clone, handler) {
Ok(worker) => worker,
Err(e) => {
info!("failed to initialize inotify handle: {}", e);
return;
}
};
if let Err(e) = worker.run() {
info!("error returned from worker thread: {}", e);
}
});
WorkerHandle::new(jhandle, exit_flag)
}
fn new(watch_paths: Vec<PathBuf>, exit_flag: Arc<AtomicBool>, handler: Arc<Mutex<MonitorEventHandler>>) -> Result<MonitorWorker> {
Ok(MonitorWorker {
descriptors: HashMap::new(),
inotify: Inotify::init()?,
exit_flag,
watch_paths,
handler,
})
}
fn add_watches(&mut self) -> Result<()> {
let watch_flags = WatchMask::CREATE | WatchMask::DELETE | WatchMask::MOVED_TO |
WatchMask::DONT_FOLLOW | WatchMask::ONLYDIR;
for p in &self.watch_paths {
let wd = self.inotify.add_watch(p, watch_flags)?;
self.descriptors.insert(wd, p.clone());
}
Ok(())
}
fn read_events<'a>(&mut self, buffer: &'a mut [u8]) -> Result<Option<Events<'a>>> {
if self.exit_flag.load(Ordering::Relaxed) {
return Ok(None);
}
match self.inotify.read_events_blocking(buffer) {
Ok(events) => Ok(Some(events)),
Err(e) => {
if e.kind() == ErrorKind::Interrupted {
Ok(None)
} else {
Err(e.into())
}
}
}
}
fn process_events(&self, events: Events) {
for ev in events {
if let Err(e) = self.handle_event(&ev) {
info!("error handling inotify event: {}", e);
}
}
}
fn run(&mut self) -> Result<()> {
info!("running monitor event loop");
self.add_watches()?;
let mut buffer = [0u8; 4096];
loop {
match self.read_events(&mut buffer)? {
Some(events) => self.process_events(events),
None => break,
}
}
Ok(())
}
fn full_event_path(&self, ev: &Event) -> Result<PathBuf> {
let filename = ev.name
.ok_or(format_err!("inotify event received without a filename"))?;
let path = self.descriptors.get(&ev.wd)
.ok_or(format_err!("Failed to find descriptor for received inotify event"))?;
Ok(path.join(filename))
}
fn handle_event(&self, ev: &Event) -> Result<()> {
let handler = self.handler.lock().unwrap();
let pb = self.full_event_path(ev)?;
let path = pb.as_path();
let is_create = ev.mask.intersects(EventMask::CREATE|EventMask::MOVED_TO);
if !is_create && !ev.mask.contains(EventMask::DELETE) {
return Err(format_err!("Unexpected mask value for inotify event: {:?}", ev.mask));
}
if ev.mask.contains(EventMask::ISDIR) {
if is_create {
handler.directory_added(path)?;
} else {
handler.directory_removed(path)?;
}
} else {
if is_create {
handler.file_added(path)?;
} else {
handler.file_removed(path)?;
}
}
Ok(())
}
}
pub struct WorkerHandle {
join_handle: JoinHandle<()>,
exit_flag: Arc<AtomicBool>,
}
impl WorkerHandle {
fn new(join_handle: JoinHandle<()>, exit_flag: Arc<AtomicBool>) -> WorkerHandle {
WorkerHandle { join_handle, exit_flag }
}
pub fn stop(&self) {
info!("calling stop on monitor");
let tid = self.join_handle.as_pthread_t();
self.exit_flag.store(true, Ordering::Relaxed);
unsafe {
libc::pthread_kill(tid, signal::SIGUSR1 as libc::c_int);
}
}
pub fn wait(self) {
if let Err(e) = self.join_handle.join() {
warn!("monitor thread panic with '{:?}'", e);
}
}
}
static INITIALIZE_ONCE: Once = ONCE_INIT;
fn initialize() {
INITIALIZE_ONCE.call_once(|| {
let h = signal::SigHandler::Handler(sighandler);
let sa = signal::SigAction::new(h, signal::SaFlags::empty(), signal::SigSet::empty());
if let Err(e) = unsafe { signal::sigaction(signal::SIGUSR1, &sa) } {
warn!("Error setting signal handler: {}", e);
}
});
}
extern fn sighandler(_: libc::c_int) {
// do nothing, signal is only used to EINTR blocking inotify call
}

307
citadel-tools/citadel-desktopd/src/parser.rs
View File

@ -1,307 +0,0 @@
use std::io::Read;
use std::fs::File;
use std::path::Path;
use std::collections::HashSet;
use desktop::{DesktopFile,Line};
use Result;
lazy_static! {
// These are the keys which are copied into the translated .desktop files
static ref KEY_WHITELIST: HashSet<&'static str> = [
"Type", "Version", "Name", "GenericName", "NoDisplay", "Comment", "Icon", "Hidden",
"OnlyShowIn", "NotShowIn", "Path", "Terminal", "Actions", "MimeType",
"Categories", "Keywords", "StartupNotify", "StartupWMClass", "URL", "DocPath",
"X-GNOME-FullName", "X-GNOME-Provides", "X-Desktop-File-Install-Version", "X-GNOME-UsesNotifications",
"X-GNOME-DocPath", "X-Geoclue-Reason", "X-GNOME-SingleWindow", "X-GNOME-Gettext-Domain",
"X-MultipleArgs",
].iter().cloned().collect();
// These are keys which are recognized but deliberately ignored.
static ref KEY_IGNORELIST: HashSet<&'static str> = [
"DBusActivatable", "Implements", "TryExec", "InitialPreference", "Encoding", "X-KDE-Protocols", "X-GIO-NoFuse", "X-Gnome-Vfs-System",
"X-GNOME-Autostart-Phase", "X-GNOME-Autostart-Notify", "X-GNOME-AutoRestart",
"X-GNOME-Bugzilla-Bugzilla", "X-GNOME-Bugzilla-Product", "X-GNOME-Bugzilla-Component", "X-GNOME-Bugzilla-Version",
"X-GNOME-Bugzilla-ExtraInfoScript", "X-GNOME-Bugzilla-OtherBinaries", "X-GNOME-Autostart-enabled",
"X-AppInstall-Package", "X-KDE-SubstituteUID", "X-Ubuntu-Gettext-Domain", "X-AppInstall-Keywords",
"X-Ayatana-Desktop-Shortcuts", "X-GNOME-Settings-Panel", "X-GNOME-WMSettingsModule", "X-GNOME-WMName",
"X-GnomeWMSettingsLibrary",
].iter().cloned().collect();
}
fn is_whitelisted_key(key: &str) -> bool {
KEY_WHITELIST.contains(key)
}
fn filename_from_path(path: &Path) -> Result<&str> {
let filename = match path.file_name() {
Some(name) => name,
None => return Err(format_err!("Path {:?} has no filename component", path)),
};
match filename.to_str() {
Some(s) => Ok(s),
None => Err(format_err!("Filename has invalid utf8 encoding")),
}
}
pub struct DesktopFileParser {
desktop_file: DesktopFile,
exec_prefix: String,
seen_header: bool,
current_action: Option<String>,
in_ignored_group: bool,
known_actions: HashSet<String>,
}
impl DesktopFileParser {
fn new(filename: &str, exec_prefix: &str) -> DesktopFileParser {
DesktopFileParser {
desktop_file: DesktopFile::new(filename),
exec_prefix: exec_prefix.to_string(),
seen_header: false,
current_action: None,
in_ignored_group: false,
known_actions: HashSet::new(),
}
}
pub fn parse_from_path<P: AsRef<Path>>(path: P, exec_prefix: &str) -> Result<DesktopFile> {
let filename = filename_from_path(path.as_ref())?;
let f = File::open(path.as_ref())?;
DesktopFileParser::parse_from_reader(f, filename, exec_prefix)
}
fn parse_from_reader<T: Read>(mut r: T, filename: &str, exec_prefix: &str) -> Result<DesktopFile> {
let mut buffer = String::new();
r.read_to_string(&mut buffer)?;
DesktopFileParser::parse_from_string(&buffer, filename, exec_prefix)
}
fn parse_from_string(body: &str, filename: &str, exec_prefix: &str) -> Result<DesktopFile> {
let mut parser = DesktopFileParser::new(filename, exec_prefix);
for s in body.lines() {
match LineParser::parse(s) {
Some(line) => parser.process_line(line)?,
None => return Err(format_err!("Failed to parse line: '{}'", s))
}
}
Ok(parser.desktop_file)
}
fn process_initial(&mut self, line: Line) -> Result<()> {
match line {
Line::Comment(_) | Line::Empty => {},
Line::DesktopHeader => self.seen_header = true,
_ => return Err(format_err!("Missing Desktop Entry header"))
}
self.desktop_file.add_line(line);
Ok(())
}
fn process_line(&mut self, mut line: Line) -> Result<()> {
if self.in_ignored_group && !line.is_action_header() {
return Ok(())
}
if !self.seen_header {
return self.process_initial(line)
}
if let Line::KeyValue(ref k, ref value) = line {
if k == "Actions" {
for s in value.split_terminator(";") {
self.known_actions.insert(s.trim().to_string());
}
}
}
match line {
Line::ExecLine(ref mut s) => {
s.insert_str(0,self.exec_prefix.as_str())
},
Line::DesktopHeader => return Err(format_err!("Duplicate Desktop Entry header")),
Line::ActionHeader(ref action) => {
if self.known_actions.contains(action) {
self.current_action = Some(action.to_string());
self.in_ignored_group = false;
} else {
return Err(format_err!("Desktop Action header with undecleared action: {}", action))
}
},
Line::GroupHeader(_) => {
self.in_ignored_group = true;
return Ok(())
},
Line::KeyLocaleValue(ref k,_,_) | Line::KeyValue(ref k,_) => {
if !is_whitelisted_key(k) {
if !KEY_IGNORELIST.contains(k.as_str()) {
info!("Unknown key in {}: {}", self.desktop_file.filename(), k);
}
return Ok(())
}
}
_ => {},
}
if let Some(ref action) = self.current_action {
self.desktop_file.add_action_line(action, line)
} else {
self.desktop_file.add_line(line);
}
Ok(())
}
}
const DESKTOP_ACTION: &'static str = "Desktop Action ";
struct LineParser<'a> {
s: &'a str,
}
impl <'a> LineParser<'a> {
fn new(s: &'a str) -> LineParser<'a> {
LineParser {
s,
}
}
fn parse(s: &'a str) -> Option<Line> {
if let Some(line) = LineParser::new(s)._parse() {
if validate_line(&line) {
return Some(line)
}
}
None
}
fn first(&self) -> Option<char> {
self.s.chars().next()
}
fn last(&self) -> Option<char> {
self.s.chars().next_back()
}
fn _parse(&mut self) -> Option<Line> {
match self.first() {
None => Some(Line::Empty),
Some('#') => Some(Line::Comment(self.s[1..].to_string())),
Some('[') => self.parse_header(),
Some(_) => self.parse_keyval(),
}
}
fn parse_header(&mut self) -> Option<Line> {
if self.last().unwrap() != ']' {
return None
}
let content = &self.s[1..self.s.len() - 1];
if content.starts_with(DESKTOP_ACTION) {
let action = &content[DESKTOP_ACTION.len()..];
return Some(Line::ActionHeader(action.to_string()))
} else if content == "Desktop Entry" {
return Some(Line::DesktopHeader)
}
return Some(Line::GroupHeader(content.to_string()))
}
fn parse_keyval(&self) -> Option<Line> {
let parts: Vec<&str> = self.s.splitn(2, "=").collect();
if parts.len() != 2 {
return None
}
let key = parts[0].trim();
let val = parts[1].trim();
if !key.contains("[") {
if key == "Exec" {
return Some(Line::ExecLine(val.to_string()))
}
return Some(Line::KeyValue(key.to_string(), val.to_string()))
}
self.parse_locale(key).map(|(key,locale)| Line::KeyLocaleValue(key, locale, val.to_string()))
}
fn parse_locale(&self, key: &str) -> Option<(String,String)> {
let idx = key.find("[").unwrap();
let (k,loc) = key.split_at(idx);
let mut chars = loc.chars();
if let Some(']') = chars.next_back() {
chars.next();
if k.trim() == "Exec" {
// Exec key with locale not allowed
return None;
}
return Some((k.trim().to_string(), chars.as_str().to_string()))
}
None
}
}
fn is_alphanum_or_dash(c: char) -> bool {
is_ascii(c) && (c.is_alphanumeric() || c == '-')
}
fn is_ascii(c: char) -> bool {
c as u32 <= 0x7F
}
fn is_first_char_alphabetic(s: &str) -> bool {
if let Some(c) = s.chars().next() {
return is_ascii(c) && c.is_alphabetic()
}
false
}
fn is_valid_key(key: &str) -> bool {
if !is_first_char_alphabetic(key) {
return false
}
key.chars().all(is_alphanum_or_dash)
}
fn is_valid_locale(locale: &str) -> bool {
!locale.is_empty() && locale.chars().all(|c| {
is_alphanum_or_dash(c) || c == '_' || c == '.' || c == '@'
})
}
fn is_valid_value(value: &str) -> bool {
value.chars().all(|c| {
!(c.is_control() || c as u32 == 0 )
})
}
fn is_valid_action(action: &str) -> bool {
is_first_char_alphabetic(action) && action.chars().all(is_alphanum_or_dash)
}
fn is_valid_group(group: &str) -> bool {
is_first_char_alphabetic(group) && group.chars().all(|c| {
is_ascii(c) && !c.is_control()
})
}
fn is_valid_exec(val: &str) -> bool {
val.chars().all(|c| {
is_ascii(c) && !(c.is_control() || c as u32 == 0)
})
}
pub fn validate_line(line: &Line) -> bool {
match *line {
Line::ExecLine(ref s) => is_valid_exec(s),
Line::KeyValue(ref k, ref v) => is_valid_key(k) && is_valid_value(v),
Line::KeyLocaleValue(ref k, ref l, ref v) => is_valid_key(k) && is_valid_locale(l) && is_valid_value(v),
Line::ActionHeader(ref action) => is_valid_action(action),
Line::GroupHeader(ref group) => is_valid_group(group),
_ => true,
}
}
#[test]
fn test_parser() {
let tests = vec!["###", "", "# hello", "[Desktop Entry]", "[Desktop Action foo]", "Foo=Bar", "Foo[hehe]=Lol"];
for t in tests {
println!("{:?}", LineParser::parse(t));
}
}

350
citadel-tools/citadel-realms/Cargo.lock generated
View File

@ -1,350 +0,0 @@
[[package]]
name = "ansi_term"
version = "0.11.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"winapi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "atty"
version = "0.2.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)",
"termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
"winapi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "backtrace"
version = "0.3.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"backtrace-sys 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
"cfg-if 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)",
"rustc-demangle 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
"winapi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "backtrace-sys"
version = "0.1.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"cc 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "bitflags"
version = "1.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "cc"
version = "1.0.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "cfg-if"
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15
citadel-tools/citadel-realms/Cargo.toml
View File

@ -1,15 +0,0 @@
[package]
name = "citadel-realms"
version = "0.1.0"
authors = ["Bruce Leidl <bruce@subgraph.com>"]
homepage = "http://github.com/subgraph/citadel"
[dependencies]
libc = "0.2"
clap = "2.30.0"
failure = "0.1.1"
toml = "0.4.5"
serde_derive = "1.0.27"
serde = "1.0.27"
termcolor = "0.3"
walkdir = "2"

1
citadel-tools/citadel-realms/README.md
View File

@ -1 +0,0 @@
../../docs/realms.md

43
citadel-tools/citadel-realms/src/appimg.rs
View File

@ -1,43 +0,0 @@
use std::path::Path;
use std::process::Command;
use Realm;
use Result;
const BASE_APPIMG_PATH: &str = "/storage/appimg/base.appimg";
const BTRFS_COMMAND: &str = "/usr/bin/btrfs";
pub fn clone_base_appimg(target_realm: &Realm) -> Result<()> {
if !Path::new(BASE_APPIMG_PATH).exists() {
bail!("base appimg does not exist at {}", BASE_APPIMG_PATH);
}
let target = format!("/realms/realm-{}/rootfs", target_realm.name());
let target_path = Path::new(&target);
if target_path.exists() {
bail!("cannot create clone of base appimg for realm '{}' because rootfs directory already exists at {}",
target_realm.name(), target);
}
if !target_path.parent().unwrap().exists() {
bail!("cannot create clone of base appimg for realm '{}' because realm directory /realms/realm-{} does not exist.",
target_realm.name(), target_realm.name());
}
Command::new(BTRFS_COMMAND)
.args(&["subvolume", "snapshot", BASE_APPIMG_PATH, &target ])
.status()
.map_err(|e| format_err!("failed to execute {}: {}", BTRFS_COMMAND, e))?;
Ok(())
}
pub fn delete_rootfs_subvolume(realm: &Realm) -> Result<()> {
let path = realm.base_path().join("rootfs");
Command::new(BTRFS_COMMAND)
.args(&["subvolume", "delete", path.to_str().unwrap() ])
.status()
.map_err(|e| format_err!("failed to execute {}: {}", BTRFS_COMMAND, e))?;
Ok(())
}

112
citadel-tools/citadel-realms/src/config.rs
View File

@ -1,112 +0,0 @@
use std::path::Path;
use std::fs::File;
use std::io::Read;
use toml;
use Result;
fn default_true() -> bool {
true
}
fn default_zone() -> String {
"clear".to_owned()
}
#[derive (Deserialize,Clone)]
pub struct RealmConfig {
#[serde(default = "default_true", rename="use-shared-dir")]
use_shared_dir: bool,
#[serde(default, rename="use-ephemeral-home")]
use_ephemeral_home: bool,
#[serde(default = "default_true", rename="use-sound")]
use_sound: bool,
#[serde(default = "default_true", rename="use-x11")]
use_x11: bool,
#[serde(default = "default_true", rename="use-wayland")]
use_wayland: bool,
#[serde(default, rename="use-kvm")]
use_kvm: bool,
#[serde(default,rename="use-gpu")]
use_gpu: bool,
#[serde(default = "default_true", rename="use-network")]
use_network: bool,
#[serde(default = "default_zone", rename="network-zone")]
network_zone: String,
}
impl RealmConfig {
pub fn load_or_default(path: &Path) -> Result<RealmConfig> {
if path.exists() {
let s = load_as_string(&path)?;
let config = toml::from_str::<RealmConfig>(&s)?;
Ok(config)
} else {
Ok(RealmConfig::default())
}
}
pub fn default() -> RealmConfig {
RealmConfig {
use_shared_dir: true,
use_ephemeral_home: false,
use_sound: true,
use_x11: true,
use_wayland: true,
use_kvm: false,
use_gpu: false,
use_network: true,
network_zone: default_zone(),
}
}
pub fn kvm(&self) -> bool {
self.use_kvm
}
pub fn gpu(&self) -> bool {
self.use_gpu
}
pub fn shared_dir(&self) -> bool {
self.use_shared_dir
}
pub fn emphemeral_home(&self) -> bool {
self.use_ephemeral_home
}
pub fn sound(&self) -> bool {
self.use_sound
}
pub fn x11(&self) -> bool {
self.use_x11
}
pub fn wayland(&self) -> bool {
self.use_wayland
}
pub fn network(&self) -> bool {
self.use_network
}
pub fn network_zone(&self) -> &str {
&self.network_zone
}
}
fn load_as_string(path: &Path) -> Result<String> {
let mut f = File::open(path)?;
let mut buffer = String::new();
f.read_to_string(&mut buffer)?;
Ok(buffer)
}

307
citadel-tools/citadel-realms/src/main.rs
View File

@ -1,307 +0,0 @@
#[macro_use] extern crate failure;
#[macro_use] extern crate serde_derive;
extern crate libc;
extern crate clap;
extern crate toml;
extern crate termcolor;
extern crate walkdir;
use failure::Error;
use clap::{App,Arg,ArgMatches,SubCommand};
use clap::AppSettings::*;
use std::process::exit;
use std::cell::RefCell;
use std::result;
pub type Result<T> = result::Result<T,Error>;
thread_local! {
pub static VERBOSE: RefCell<bool> = RefCell::new(true);
}
pub fn verbose() -> bool {
VERBOSE.with(|f| *f.borrow())
}
macro_rules! warn {
($e:expr) => { println!("[!]: {}", $e); };
($fmt:expr, $($arg:tt)+) => { println!("[!]: {}", format!($fmt, $($arg)+)); };
}
macro_rules! info {
($e:expr) => { if ::verbose() { println!("[+]: {}", $e); } };
($fmt:expr, $($arg:tt)+) => { if ::verbose() { println!("[+]: {}", format!($fmt, $($arg)+)); } };
}
mod manager;
mod realm;
mod util;
mod systemd;
mod config;
mod network;
mod appimg;
use realm::{Realm,RealmSymlinks};
use manager::RealmManager;
use config::RealmConfig;
use systemd::Systemd;
use network::NetworkConfig;
fn main() {
let app = App::new("citadel-realms")
.about("Subgraph Citadel realm management")
.after_help("'realms help <command>' to display help for an individual subcommand\n")
.global_settings(&[ColoredHelp, DisableVersion, DeriveDisplayOrder, VersionlessSubcommands ])
.arg(Arg::with_name("help").long("help").hidden(true))
.arg(Arg::with_name("quiet")
.long("quiet")
.help("Don't display extra output"))
.subcommand(SubCommand::with_name("list")
.arg(Arg::with_name("help").long("help").hidden(true))
.about("Display list of all realms"))
.subcommand(SubCommand::with_name("shell")
.arg(Arg::with_name("help").long("help").hidden(true))
.about("Open shell in current or named realm")
.arg(Arg::with_name("realm-name")
.help("Name of a realm to open shell in. Use current realm if omitted."))
.arg(Arg::with_name("root-shell")
.long("root")
.help("Open shell as root instead of user account.")))
.subcommand(SubCommand::with_name("terminal")
.arg(Arg::with_name("help").long("help").hidden(true))
.about("Launch terminal in current or named realm")
.arg(Arg::with_name("realm-name")
.help("Name of realm to open terminal in. Use current realm if omitted.")))
.subcommand(SubCommand::with_name("start")
.arg(Arg::with_name("help").long("help").hidden(true))
.about("Start named realm or default realm")
.arg(Arg::with_name("realm-name")
.help("Name of realm to start. Use default realm if omitted.")))
.subcommand(SubCommand::with_name("stop")
.arg(Arg::with_name("help").long("help").hidden(true))
.about("Stop a running realm by name")
.arg(Arg::with_name("realm-name")
.required(true)
.help("Name of realm to stop.")))
.subcommand(SubCommand::with_name("default")
.arg(Arg::with_name("help").long("help").hidden(true))
.about("Choose a realm to start automatically on boot")
.arg(Arg::with_name("realm-name")
.help("Name of a realm to set as default. Display current default realm if omitted.")))
.subcommand(SubCommand::with_name("current")
.arg(Arg::with_name("help").long("help").hidden(true))
.about("Choose a realm to set as 'current' realm")
.arg(Arg::with_name("realm-name")
.help("Name of a realm to set as current, will start if necessary. Display current realm name if omitted.")))
.subcommand(SubCommand::with_name("run")
.arg(Arg::with_name("help").long("help").hidden(true))
.about("Execute a command in named realm or current realm")
.arg(Arg::with_name("realm-name")
.help("Name of realm to run command in, start if necessary. Use current realm if omitted."))
.arg(Arg::with_name("args")
.required(true)
.last(true)
.allow_hyphen_values(true)
.multiple(true)))
.subcommand(SubCommand::with_name("update-appimg")
.arg(Arg::with_name("help").long("help").hidden(true))
.about("Launch shell to update application image")
.arg(Arg::with_name("appimg-name")
.long("appimg")
.help("Name of application image in /storage/appimg directory. Default is to use base.appimg")
.takes_value(true)))
.subcommand(SubCommand::with_name("new")
.arg(Arg::with_name("help").long("help").hidden(true))
.about("Create a new realm with the name provided")
.arg(Arg::with_name("realm-name")
.required(true)
.help("Name to assign to newly created realm")))
.subcommand(SubCommand::with_name("remove")
.arg(Arg::with_name("help").long("help").hidden(true))
.about("Remove realm by name")
.arg(Arg::with_name("no-confirm")
.long("no-confirm")
.help("Do not prompt for confirmation."))
.arg(Arg::with_name("remove-home")
.long("remove-home")
.help("Also remove home directory with --no-confirm rather than moving it to /realms/removed-homes"))
.arg(Arg::with_name("realm-name")
.help("Name of realm to remove")
.required(true)));
let matches = app.get_matches();
if matches.is_present("quiet") {
VERBOSE.with(|f| *f.borrow_mut() = false);
}
let result = match matches.subcommand() {
("list", _) => do_list(),
("start", Some(m)) => do_start(m),
("stop", Some(m)) => do_stop(m),
("default", Some(m)) => do_default(m),
("current", Some(m)) => do_current(m),
("run", Some(m)) => do_run(m),
("shell", Some(m)) => do_shell(m),
("terminal", Some(m)) => do_terminal(m),
("new", Some(m)) => do_new(m),
("remove", Some(m)) => do_remove(m),
("update-appimg", _) => do_update_appimg(),
_ => {
let _ = do_list();
exit(0);
},
};
if let Err(e) = result {
warn!("{}", e);
exit(1);
}
}
fn is_root() -> bool {
unsafe {
libc::geteuid() == 0
}
}
fn require_root() -> Result<()> {
if !is_root() {
bail!("You need to do that as root")
}
Ok(())
}
fn do_list() -> Result<()> {
let manager = RealmManager::load()?;
println!();
manager.list()?;
println!("\n 'realms help' for list of commands\n");
Ok(())
}
fn do_start(matches: &ArgMatches) -> Result<()> {
require_root()?;
let mut manager = RealmManager::load()?;
match matches.value_of("realm-name") {
Some(name) => manager.start_named_realm(name)?,
None => manager.start_default()?,
};
Ok(())
}
fn do_stop(matches: &ArgMatches) -> Result<()> {
require_root()?;
let name = matches.value_of("realm-name").unwrap();
let mut manager = RealmManager::load()?;
manager.stop_realm(name)?;
Ok(())
}
fn do_default(matches: &ArgMatches) -> Result<()> {
let manager = RealmManager::load()?;
match matches.value_of("realm-name") {
Some(name) => {
require_root()?;
manager.set_default_by_name(name)?;
},
None => {
if let Some(name) = manager.default_realm_name() {
println!("Default Realm: {}", name);
} else {
println!("No default realm.");
}
},
}
Ok(())
}
fn do_current(matches: &ArgMatches) -> Result<()> {
let manager = RealmManager::load()?;
match matches.value_of("realm-name") {
Some(name) => {
require_root()?;
manager.set_current_by_name(name)?;
},
None => {
if let Some(name) = manager.current_realm_name() {
println!("Current Realm: {}", name);
} else {
println!("No current realm.");
}
},
}
Ok(())
}
fn do_run(matches: &ArgMatches) -> Result<()> {
let args: Vec<&str> = matches.values_of("args").unwrap().collect();
let mut v = Vec::new();
for arg in args {
v.push(arg.to_string());
}
let manager = RealmManager::load()?;
manager.run_in_realm(matches.value_of("realm-name"), &v, true)?;
Ok(())
}
fn do_shell(matches: &ArgMatches) -> Result<()> {
let manager = RealmManager::load()?;
let root = matches.is_present("root-shell");
manager.launch_shell(matches.value_of("realm-name"), root)?;
Ok(())
}
fn do_terminal(matches: &ArgMatches) -> Result<()> {
let manager = RealmManager::load()?;
manager.launch_terminal(matches.value_of("realm-name"))?;
Ok(())
}
fn do_new(matches: &ArgMatches) -> Result<()> {
require_root()?;
let name = matches.value_of("realm-name").unwrap();
let mut manager = RealmManager::load()?;
manager.new_realm(name)?;
Ok(())
}
fn do_remove(matches: &ArgMatches) -> Result<()> {
require_root()?;
let confirm = !matches.is_present("no-confirm");
let save_home = !matches.is_present("remove-home");
let name = matches.value_of("realm-name").unwrap();
let mut manager = RealmManager::load()?;
manager.remove_realm(name, confirm, save_home)?;
Ok(())
}
fn do_update_appimg() -> Result<()> {
require_root()?;
let manager = RealmManager::load()?;
manager.base_appimg_update()
}

399
citadel-tools/citadel-realms/src/manager.rs
View File

@ -1,399 +0,0 @@
use std::rc::Rc;
use std::cell::RefCell;
use std::path::{Path,PathBuf};
use std::fs;
use std::collections::HashMap;
use std::io::Write;
use Realm;
use Result;
use Systemd;
use RealmSymlinks;
use NetworkConfig;
use util::*;
const REALMS_BASE_PATH: &str = "/realms";
pub struct RealmManager {
/// Map from realm name -> realm
realm_map: HashMap<String, Realm>,
/// Sorted for 'list'
realm_list: Vec<Realm>,
/// track status of 'current' and 'default' symlinks
symlinks: Rc<RefCell<RealmSymlinks>>,
/// finds free ip addresses to use
network: Rc<RefCell<NetworkConfig>>,
/// interface to systemd
systemd: Systemd,
}
impl RealmManager {
fn new() -> Result<RealmManager> {
let network = RealmManager::create_network_config()?;
Ok(RealmManager {
realm_map: HashMap::new(),
realm_list: Vec::new(),
symlinks: Rc::new(RefCell::new(RealmSymlinks::new())),
network: network.clone(),
systemd: Systemd::new(network),
})
}
fn create_network_config() -> Result<Rc<RefCell<NetworkConfig>>> {
let mut network = NetworkConfig::new();
network.add_bridge("clear", "172.17.0.0/24")?;
Ok(Rc::new(RefCell::new(network)))
}
pub fn load() -> Result<RealmManager> {
let mut manager = RealmManager::new()?;
manager.symlinks.borrow_mut().load_symlinks()?;
if ! PathBuf::from(REALMS_BASE_PATH).exists() {
bail!("realms base directory {} does not exist", REALMS_BASE_PATH);
}
for dent in fs::read_dir(REALMS_BASE_PATH)? {
let path = dent?.path();
manager.process_realm_path(&path)
.map_err(|e| format_err!("error processing entry {} in realm base dir: {}", path.display(), e))?;
}
manager.realm_list.sort_unstable();
Ok(manager)
}
///
/// Process `path` as an entry from the base realms directory and
/// if `path` is a directory, and directory name has prefix "realm-"
/// extract chars after prefix as realm name and add a new `Realm`
/// instance
///
fn process_realm_path(&mut self, path: &Path) -> Result<()> {
let meta = path.symlink_metadata()?;
if !meta.is_dir() {
return Ok(())
}
let fname = path_filename(path);
if !fname.starts_with("realm-") {
return Ok(())
}
let (_, realm_name) = fname.split_at(6);
if !is_valid_realm_name(realm_name) {
warn!("ignoring directory in realm storage which has invalid realm name: {}", realm_name);
return Ok(())
}
let rootfs = path.join("rootfs");
if !rootfs.exists() {
warn!("realm directory {} does not have a rootfs, ignoring", path.display());
return Ok(())
}
match Realm::new(realm_name, self.symlinks.clone(), self.network.clone()) {
Ok(realm) => { self.add_realm_entry(realm);} ,
Err(e) => warn!("Ignoring '{}': {}", realm_name, e),
};
Ok(())
}
fn add_realm_entry(&mut self, realm: Realm) -> &Realm {
self.realm_map.insert(realm.name().to_owned(), realm.clone());
self.realm_list.push(realm.clone());
self.realm_map.get(realm.name()).expect("cannot find realm we just added to map")
}
fn remove_realm_entry(&mut self, name: &str) -> Result<()> {
self.realm_map.remove(name);
let list = self.realm_list.clone();
let mut have_default = false;
self.realm_list.clear();
for realm in list {
if realm.name() != name {
if realm.is_default() {
have_default = true;
}
self.realm_list.push(realm);
}
}
if !have_default && !self.realm_list.is_empty() {
self.symlinks.borrow_mut().set_default_symlink(self.realm_list[0].name())?;
}
Ok(())
}
pub fn current_realm_name(&self) -> Option<String> {
self.symlinks.borrow().current()
}
pub fn default_realm_name(&self) -> Option<String> {
self.symlinks.borrow().default()
}
///
/// Execute shell in a realm. If `realm_name` is `None` then exec
/// shell in current realm, otherwise look up realm by name.
///
/// If `root_shell` is true, open a root shell, otherwise open
/// a user (uid = 1000) shell.
///
pub fn launch_shell(&self, realm_name: Option<&str>, root_shell: bool) -> Result<()> {
let run_shell = |realm: &Realm| {
info!("opening shell in realm '{}'", realm.name());
realm.exec_shell(root_shell)?;
info!("exiting shell in realm '{}'", realm.name());
Ok(())
};
if let Some(name) = realm_name {
self.with_named_realm(name, true, run_shell)
} else {
self.with_current_realm(run_shell)
}
}
pub fn launch_terminal(&self, name: Option<&str>) -> Result<()> {
let run_terminal = |realm: &Realm| {
info!("opening terminal in realm '{}'", realm.name());
let title_arg = format!("Realm: {}", realm.name());
realm.run(&["/usr/bin/gnome-terminal".to_owned(), "--title".to_owned(), title_arg], true)
};
if let Some(name) = name {
self.with_named_realm(name, true, run_terminal)
} else {
self.with_current_realm(run_terminal)
}
}
pub fn run_in_realm(&self, realm_name: Option<&str>, args: &[String], use_launcher: bool) -> Result<()> {
if let Some(name) = realm_name {
self.with_named_realm(name, true, |realm| realm.run(args, use_launcher))
} else {
self.with_current_realm(|realm| realm.run(args, use_launcher))
}
}
fn with_current_realm<F: Fn(&Realm)->Result<()>>(&self, f: F) -> Result<()> {
match self.symlinks.borrow().current() {
Some(ref name) => {
self.with_named_realm(name, false, f)?;
},
None => {
warn!("No current realm instance to run command in");
}
}
Ok(())
}
fn with_named_realm<F: Fn(&Realm)->Result<()>>(&self, name: &str, want_start: bool, f: F) -> Result<()> {
match self.realm(name) {
Some(realm) => {
if want_start && !realm.is_running()? {
info!("realm '{}' is not running, starting it.", realm.name());
self.start_realm(realm)?;
}
f(realm)
},
None => bail!("no realm with name '{}' exists", name),
}
}
pub fn list(&self) -> Result<()> {
let mut out = ColoredOutput::new();
self.print_realm_header(&mut out);
for realm in &self.realm_list {
self.print_realm(realm, &mut out)?;
}
Ok(())
}
fn print_realm_header(&self, out: &mut ColoredOutput) {
out.write(" REALMS ").bold("bold").write(": current, ").bright("colored")
.write(": running, (default) starts on boot\n").write(" ------\n\n");
}
fn print_realm(&self, realm: &Realm, out: &mut ColoredOutput) -> Result<()> {
let name = format!("{:12}", realm.name());
if realm.is_current() {
out.write(" > ").bold(&name);
} else if realm.is_running()? {
out.write(" ").bright(&name);
} else {
out.write(" ").dim(&name);
}
if realm.is_default() {
out.write(" (default)");
}
out.write("\n");
Ok(())
}
pub fn start_default(&mut self) -> Result<()> {
let default = self.symlinks.borrow().default();
if let Some(ref realm_name) = default {
self.start_named_realm(realm_name)?;
return Ok(());
}
bail!("No default realm to start");
}
pub fn start_named_realm(&mut self, realm_name: &str) -> Result<()> {
info!("starting realm '{}'", realm_name);
self.with_named_realm(realm_name, false, |realm| self.start_realm(realm))
}
fn start_realm(&self, realm: &Realm) -> Result<()> {
let mut symlinks = self.symlinks.borrow_mut();
let no_current_realm = symlinks.current().is_none();
// no realm is current, so make this realm the current one
// service file for realm will also start desktopd, so this symlink
// must be created before launching realm.
if no_current_realm {
symlinks.set_current_symlink(Some(realm.name()))?;
}
if let Err(e) = realm.start() {
if no_current_realm {
// oops realm failed to start, need to reset symlink we changed
symlinks.set_current_symlink(None)?;
}
return Err(e);
}
Ok(())
}
pub fn stop_realm(&mut self, name: &str) -> Result<()> {
match self.realm_map.get(name) {
Some(realm) => {
realm.stop()?;
self.set_current_if_none()?;
},
None => {
warn!("Cannot stop '{}'. Realm does not exist", name);
return Ok(())
},
};
Ok(())
}
fn set_current_if_none(&self) -> Result<()> {
let mut symlinks = self.symlinks.borrow_mut();
if symlinks.current().is_some() {
return Ok(());
}
if let Some(ref name) = self.find_running_realm_name()? {
symlinks.set_current_symlink(Some(name))?;
self.systemd.restart_desktopd()?;
} else {
self.systemd.stop_desktopd()?;
}
Ok(())
}
fn find_running_realm_name(&self) -> Result<Option<String>> {
for realm in self.realm_map.values() {
if realm.is_running()? {
return Ok(Some(realm.name().to_string()));
}
}
Ok(None)
}
pub fn set_current_by_name(&self, realm_name: &str) -> Result<()> {
self.with_named_realm(realm_name, false, |realm| realm.set_current())
}
pub fn set_default_by_name(&self, realm_name: &str) -> Result<()> {
self.with_named_realm(realm_name, false, |realm| realm.set_default())
}
pub fn realm_name_exists(&self, name: &str) -> bool {
self.realm_map.contains_key(name)
}
pub fn realm(&self, name: &str) -> Option<&Realm> {
self.realm_map.get(name)
}
pub fn new_realm(&mut self, name: &str) -> Result<&Realm> {
if !is_valid_realm_name(name) {
bail!("'{}' is not a valid realm name. Only letters, numbers and dash '-' symbol allowed in name. First character must be a letter", name);
} else if self.realm_name_exists(name) {
bail!("A realm with name '{}' already exists", name);
}
let realm = Realm::new(name, self.symlinks.clone(), self.network.clone())?;
match realm.create_realm_directory() {
Ok(()) => Ok(self.add_realm_entry(realm)),
Err(e) => {
fs::remove_dir_all(realm.base_path())?;
Err(e)
},
}
}
pub fn remove_realm(&mut self, realm_name: &str, confirm: bool, save_home: bool) -> Result<()> {
self.with_named_realm(realm_name, false, |realm| {
if realm.base_path().join(".realmlock").exists() {
warn!("Realm '{}' has .realmlock file in base directory to protect it from deletion.", realm.name());
warn!("Remove this file from {} before running 'realms remove {}' if you really want to delete it", realm.base_path().display(), realm.name());
return Ok(());
}
let mut save_home = save_home;
if confirm {
if !RealmManager::confirm_delete(realm.name(), &mut save_home)? {
return Ok(());
}
}
realm.delete_realm(save_home)?;
self.set_current_if_none()
})?;
self.remove_realm_entry(realm_name)?;
Ok(())
}
fn confirm_delete(realm_name: &str, save_home: &mut bool) -> Result<bool> {
let you_sure = RealmManager::prompt_user(&format!("Are you sure you want to remove realm '{}'?", realm_name), false)?;
if !you_sure {
info!("Ok, not removing");
return Ok(false);
}
println!("\nThe home directory for this realm can be saved in /realms/removed/home-{}\n", realm_name);
*save_home = RealmManager::prompt_user("Would you like to save the home directory?", true)?;
Ok(true)
}
fn prompt_user(prompt: &str, default_y: bool) -> Result<bool> {
let yn = if default_y { "(Y/n)" } else { "(y/N)" };
use std::io::{stdin,stdout};
print!("{} {} : ", prompt, yn);
stdout().flush()?;
let mut line = String::new();
stdin().read_line(&mut line)?;
let yes = match line.trim().chars().next() {
Some(c) => c == 'Y' || c == 'y',
None => default_y,
};
Ok(yes)
}
pub fn base_appimg_update(&self) -> Result<()> {
info!("Entering root shell on base appimg");
self.systemd.base_image_update_shell()
}
}

210
citadel-tools/citadel-realms/src/network.rs
View File

@ -1,210 +0,0 @@
use std::path::PathBuf;
use std::net::Ipv4Addr;
use std::collections::{HashSet,HashMap};
use std::io::{BufReader,BufRead,Write};
use std::fs::{self,File};
use Result;
const MIN_MASK: usize = 16;
const MAX_MASK: usize = 24;
const RESERVED_OCTET: u32 = 213;
/// Manage ip address assignment for bridges
pub struct NetworkConfig {
allocators: HashMap<String, BridgeAllocator>,
}
impl NetworkConfig {
pub fn new() -> NetworkConfig {
NetworkConfig {
allocators: HashMap::new(),
}
}
pub fn add_bridge(&mut self, name: &str, network: &str) -> Result<()> {
let allocator = BridgeAllocator::for_bridge(name, network)
.map_err(|e| format_err!("Failed to create bridge allocator: {}", e))?;
self.allocators.insert(name.to_owned(), allocator);
Ok(())
}
pub fn gateway(&self, bridge: &str) -> Result<String> {
match self.allocators.get(bridge) {
Some(allocator) => Ok(allocator.gateway()),
None => bail!("Failed to return gateway address for bridge {} because it does not exist", bridge),
}
}
pub fn allocate_address_for(&mut self, bridge: &str, realm_name: &str) -> Result<String> {
match self.allocators.get_mut(bridge) {
Some(allocator) => allocator.allocate_address_for(realm_name),
None => bail!("Failed to allocate address for bridge {} because it does not exist", bridge),
}
}
pub fn free_allocation_for(&mut self, bridge: &str, realm_name: &str) -> Result<()> {
match self.allocators.get_mut(bridge) {
Some(allocator) => allocator.free_allocation_for(realm_name),
None => bail!("Failed to free address on bridge {} because it does not exist", bridge),
}
}
pub fn reserved(&self, bridge: &str) -> Result<String> {
match self.allocators.get(bridge) {
Some(allocator) => Ok(allocator.reserved()),
None => bail!("Failed to return reserved address for bridge {} because it does not exist", bridge),
}
}
}
///
/// Allocates IP addresses for a bridge shared by multiple realms.
///
/// State information is stored in /run/realms/network-$bridge as
/// colon ':' separated pairs of realm name and allocated ip address
///
/// realm-a:172.17.0.2
/// realm-b:172.17.0.3
///
struct BridgeAllocator {
bridge: String,
network: Ipv4Addr,
mask_size: usize,
allocated: HashSet<Ipv4Addr>,
allocations: HashMap<String, Ipv4Addr>,
}
impl BridgeAllocator {
pub fn for_bridge(bridge: &str, network: &str) -> Result<BridgeAllocator> {
let (addr_str, mask_size) = match network.find('/') {
Some(idx) => {
let (net,bits) = network.split_at(idx);
(net.to_owned(), bits[1..].parse()?)
},
None => (network.to_owned(), 24),
};
if mask_size > MAX_MASK || mask_size < MIN_MASK {
bail!("Unsupported network mask size of {}", mask_size);
}
let mask = (1u32 << (32 - mask_size)) - 1;
let ip = addr_str.parse::<Ipv4Addr>()?;
if (u32::from(ip) & mask) != 0 {
bail!("network {} has masked bits with netmask /{}", addr_str, mask_size);
}
let mut conf = BridgeAllocator::new(bridge, ip, mask_size);
conf.load_state()?;
Ok(conf)
}
fn new(bridge: &str, network: Ipv4Addr, mask_size: usize) -> BridgeAllocator {
let mut allocator = BridgeAllocator {
bridge: bridge.to_owned(),
allocated: HashSet::new(),
allocations: HashMap::new(),
network, mask_size,
};
let rsv = u32::from(network) | RESERVED_OCTET;
allocator.allocated.insert(Ipv4Addr::from(rsv));
allocator
}
fn allocate_address_for(&mut self, realm_name: &str) -> Result<String> {
match self.find_free_address() {
Some(addr) => {
self.allocated.insert(addr.clone());
if let Some(old) = self.allocations.insert(realm_name.to_owned(), addr.clone()) {
self.allocated.remove(&old);
}
self.write_state()?;
return Ok(format!("{}/{}", addr, self.mask_size));
},
None => bail!("No free IP address could be found to assign to {}", realm_name),
}
}
fn find_free_address(&self) -> Option<Ipv4Addr> {
let mask = (1u32 << (32 - self.mask_size)) - 1;
let net = u32::from(self.network);
for i in 2..mask {
let addr = Ipv4Addr::from(net + i);
if !self.allocated.contains(&addr) {
return Some(addr);
}
}
None
}
fn gateway(&self) -> String {
let gw = u32::from(self.network) + 1;
let addr = Ipv4Addr::from(gw);
addr.to_string()
}
fn reserved(&self) -> String {
let rsv = u32::from(self.network) | RESERVED_OCTET;
let addr = Ipv4Addr::from(rsv);
format!("{}/{}", addr, self.mask_size)
}
fn free_allocation_for(&mut self, realm_name: &str) -> Result<()> {
match self.allocations.remove(realm_name) {
Some(ip) => {
self.allocated.remove(&ip);
self.write_state()?;
}
None => warn!("No address allocation found for realm {}", realm_name),
};
Ok(())
}
fn state_file_path(&self) -> PathBuf {
PathBuf::from(format!("/run/realms/network-{}", self.bridge))
}
fn load_state(&mut self) -> Result<()> {
let path = self.state_file_path();
if !path.exists() {
return Ok(())
}
let f = File::open(path)?;
let reader = BufReader::new(f);
for line in reader.lines() {
let line = &line?;
self.parse_state_line(line)?;
}
Ok(())
}
fn parse_state_line(&mut self, line: &str) -> Result<()> {
match line.find(":") {
Some(idx) => {
let (name,addr) = line.split_at(idx);
let ip = addr[1..].parse::<Ipv4Addr>()?;
self.allocated.insert(ip.clone());
self.allocations.insert(name.to_owned(), ip);
},
None => bail!("Could not parse line from network state file: {}", line),
}
Ok(())
}
fn write_state(&mut self) -> Result<()> {
let path = self.state_file_path();
let dir = path.parent().unwrap();
if !dir.exists() {
fs::create_dir_all(dir)
.map_err(|e| format_err!("failed to create directory {} for network allocation state file: {}", dir.display(), e))?;
}
let mut f = File::create(&path)
.map_err(|e| format_err!("failed to open network state file {} for writing: {}", path.display(), e))?;
for (realm,addr) in &self.allocations {
writeln!(f, "{}:{}", realm, addr)?;
}
Ok(())
}
}

375
citadel-tools/citadel-realms/src/realm.rs
View File

@ -1,375 +0,0 @@
use std::path::{PathBuf,Path};
use std::rc::Rc;
use std::cmp::Ordering;
use std::cell::{RefCell,Cell};
use std::fs::{self,File};
use std::os::unix::fs::{symlink,MetadataExt};
use {RealmConfig,Result,Systemd,NetworkConfig};
use util::*;
use appimg::*;
const REALMS_BASE_PATH: &str = "/realms";
const REALMS_RUN_PATH: &str = "/run/realms";
#[derive(Clone)]
pub struct Realm {
/// The realm name. Corresponds to a directory with path /realms/realm-$name/
name: String,
/// modify time of timestamp file which is updated when realm is set to current.
ts: Cell<i64>,
/// Configuration options, either default values or values read from file /realms/realm-$name/config
config: RealmConfig,
/// wrapper around various calls to systemd utilities
systemd: Systemd,
/// reads and manages 'current' and 'default' symlinks, shared between all instances
symlinks: Rc<RefCell<RealmSymlinks>>,
}
impl Realm {
pub fn new(name: &str, symlinks: Rc<RefCell<RealmSymlinks>>, network: Rc<RefCell<NetworkConfig>>) -> Result<Realm> {
let mut realm = Realm {
name: name.to_string(),
ts: Cell::new(0),
systemd: Systemd::new(network),
config: RealmConfig::default(), symlinks,
};
realm.load_config()?;
realm.load_timestamp()?;
Ok(realm)
}
fn load_config(&mut self) -> Result<()> {
let path = self.base_path().join("config");
self.config = RealmConfig::load_or_default(&path)
.map_err(|e| format_err!("failed to load realm config file {}: {}", path.display(), e))?;
Ok(())
}
pub fn config(&self) -> &RealmConfig {
&self.config
}
pub fn base_path(&self) -> PathBuf {
PathBuf::from(REALMS_BASE_PATH).join(format!("realm-{}", self.name))
}
pub fn set_default(&self) -> Result<()> {
if self.is_default() {
info!("Realm '{}' is already default realm", self.name());
return Ok(())
}
self.symlinks.borrow_mut().set_default_symlink(&self.name)?;
info!("Realm '{}' set as default realm", self.name());
Ok(())
}
pub fn set_current(&self) -> Result<()> {
if self.is_current() {
info!("Realm '{}' is already current realm", self.name());
return Ok(())
}
if !self.is_running()? {
self.start()?;
}
self.symlinks.borrow_mut().set_current_symlink(Some(&self.name))?;
self.systemd.restart_desktopd()?;
self.update_timestamp()?;
info!("Realm '{}' set as current realm", self.name());
Ok(())
}
pub fn is_default(&self) -> bool {
self.symlinks.borrow().is_name_default(&self.name)
}
pub fn is_current(&self) -> bool {
self.symlinks.borrow().is_name_current(&self.name)
}
pub fn is_running(&self) -> Result<bool> {
self.systemd.realm_is_active(self)
}
pub fn run(&self, args: &[String], use_launcher: bool) -> Result<()> {
self.systemd.machinectl_shell(self, args, use_launcher)?;
Ok(())
}
pub fn exec_shell(&self, as_root: bool) -> Result<()> {
self.systemd.machinectl_exec_shell(self, as_root)
}
pub fn start(&self) -> Result<()> {
self.systemd.start_realm(self)?;
info!("Started realm '{}'", self.name());
Ok(())
}
pub fn stop(&self) -> Result<()> {
self.systemd.stop_realm(self)?;
if self.is_current() {
self.symlinks.borrow_mut().set_current_symlink(None)?;
}
info!("Stopped realm '{}'", self.name());
Ok(())
}
pub fn name(&self) -> &str {
&self.name
}
fn load_timestamp(&self) -> Result<()> {
let tstamp = self.base_path().join(".tstamp");
if tstamp.exists() {
let meta = tstamp.metadata()?;
self.ts.set(meta.mtime());
}
Ok(())
}
/// create an empty file which is used to track the time at which
/// this realm was last made 'current'. These times are used
/// to order the output when listing realms.
fn update_timestamp(&self) -> Result<()> {
let tstamp = self.base_path().join(".tstamp");
if tstamp.exists() {
fs::remove_file(&tstamp)?;
}
File::create(&tstamp)
.map_err(|e| format_err!("failed to create timestamp file {}: {}", tstamp.display(), e))?;
// also load the new value
self.load_timestamp()?;
Ok(())
}
pub fn create_realm_directory(&self) -> Result<()> {
if self.base_path().exists() {
bail!("realm base directory {} already exists, cannot create", self.base_path().display());
}
fs::create_dir(self.base_path())
.map_err(|e| format_err!("failed to create realm base directory {}: {}", self.base_path().display(), e))?;
self.create_home_directory()
.map_err(|e| format_err!("failed to create realm home directory {}: {}", self.base_path().join("home").display(), e))?;
// This must be last step because if an error is returned caller assumes that subvolume was
// never created and does not need to be removed.
clone_base_appimg(self)?;
Ok(())
}
fn create_home_directory(&self) -> Result<()> {
let home = self.base_path().join("home");
fs::create_dir(&home)?;
chown(&home, 1000, 1000)?;
let skel = PathBuf::from(REALMS_BASE_PATH).join("skel");
if skel.exists() {
info!("Populating realm home directory with files from {}", skel.display());
copy_tree(&skel, &home)?;
}
Ok(())
}
pub fn delete_realm(&self, save_home: bool) -> Result<()> {
if save_home {
self.save_home_for_delete()?;
}
if self.is_running()? {
self.stop()?;
}
info!("removing rootfs subvolume for '{}'", self.name());
delete_rootfs_subvolume(self)?;
info!("removing realm directory {}", self.base_path().display());
fs::remove_dir_all(self.base_path())?;
info!("realm '{}' has been removed", self.name());
Ok(())
}
fn save_home_for_delete(&self) -> Result<()> {
let target = PathBuf::from(&format!("/realms/removed/home-{}", self.name()));
if !Path::new("/realms/removed").exists() {
fs::create_dir("/realms/removed")?;
}
fs::rename(self.base_path().join("home"), &target)
.map_err(|e| format_err!("unable to move realm home directory to {}: {}", target.display(), e))?;
info!("home directory been moved to /realms/removed/home-{}, delete it at your leisure", self.name());
Ok(())
}
}
impl Ord for Realm {
fn cmp(&self, other: &Realm) -> Ordering {
let self_run = self.is_running().unwrap_or(false);
let other_run = other.is_running().unwrap_or(false);
if self_run && !other_run {
Ordering::Less
} else if !self_run && other_run {
Ordering::Greater
} else {
let self_ts = self.ts.get();
let other_ts = other.ts.get();
other_ts.cmp(&self_ts)
}
}
}
impl PartialOrd for Realm {
fn partial_cmp(&self, other: &Realm) -> Option<Ordering> {
Some(self.cmp(other))
}
}
impl PartialEq for Realm {
fn eq(&self, other: &Realm) -> bool {
self.cmp(other) == Ordering::Equal
}
}
impl Eq for Realm {}
pub struct RealmSymlinks {
current_name: Option<String>,
default_name: Option<String>,
}
impl RealmSymlinks {
pub fn new() -> RealmSymlinks {
RealmSymlinks {
current_name: None,
default_name: None,
}
}
pub fn load_symlinks(&mut self) -> Result<()> {
self.current_name = self.resolve_realm_name(&PathBuf::from(REALMS_RUN_PATH).join("current.realm"))?;
self.default_name = self.resolve_realm_name(&PathBuf::from(REALMS_BASE_PATH).join("default.realm"))?;
Ok(())
}
fn is_name_default(&self, name: &str) -> bool {
match self.default() {
Some(dname) => dname == name,
None => false,
}
}
fn is_name_current(&self, name: &str) -> bool {
match self.current() {
Some(cname) => cname == name,
None => false,
}
}
pub fn current(&self) -> Option<String> {
self.current_name.clone()
}
pub fn default(&self) -> Option<String> {
self.default_name.clone()
}
pub fn set_current_symlink(&mut self, name: Option<&str>) -> Result<()> {
let runpath = Path::new(REALMS_RUN_PATH);
if !runpath.exists() {
fs::create_dir_all(runpath)
.map_err(|e| format_err!("failed to create realm runtime directory {}: {}", runpath.display(), e))?;
}
let path = runpath.join("current.realm");
if let Some(n) = name {
let tmp = Path::new("/run/current.realm.tmp");
let target = PathBuf::from(REALMS_BASE_PATH).join(format!("realm-{}", n));
symlink(&target, tmp)
.map_err(|e| format_err!("failed to create symlink from {} to {}: {}", tmp.display(), target.display(), e))?;
fs::rename(tmp, &path)
.map_err(|e| format_err!("failed to rename symlink from {} to {}: {}", tmp.display(), path.display(), e))?;
self.current_name = Some(n.to_owned());
} else {
if path.exists() {
fs::remove_file(&path)
.map_err(|e| format_err!("failed to remove current symlink {}: {}", path.display(), e))?;
}
self.current_name = None;
}
Ok(())
}
pub fn set_default_symlink(&mut self, name: &str) -> Result<()> {
let path = PathBuf::from(REALMS_BASE_PATH).join("default.realm");
let tmp = Path::new("/realms/default.realm.tmp");
let target = format!("realm-{}", name);
symlink(&target, tmp)
.map_err(|e| format_err!("failed to create symlink from {} to {}: {}", tmp.display(), target, e))?;
fs::rename(tmp, &path)
.map_err(|e| format_err!("failed to rename symlink from {} to {}: {}", tmp.display(), path.display(), e))?;
self.default_name = Some(name.to_owned());
Ok(())
}
fn resolve_realm_name(&self, path: &Path) -> Result<Option<String>> {
if !path.exists() {
return Ok(None);
}
let meta = path.symlink_metadata()?;
if !meta.file_type().is_symlink() {
bail!("{} exists but it is not a symlink", path.display());
}
let target = RealmSymlinks::absolute_target(path)?;
RealmSymlinks::ensure_subdir_of_base(path, &target)?;
if !target.is_dir() {
bail!("target of symlink {} is not a directory", path.display());
}
let filename = path_filename(&target);
if !filename.starts_with("realm-") {
bail!("target of symlink {} is not a realm directory", path.display());
}
Ok(Some(filename[6..].to_string()))
}
/// Read target of symlink `path` and resolve it to an absolute
/// path
fn absolute_target(path: &Path) -> Result<PathBuf> {
let target = fs::read_link(path)?;
if target.is_absolute() {
Ok(target)
} else if target.components().count() == 1 {
match path.parent() {
Some(parent) => return Ok(parent.join(target)),
None => bail!("Cannot resolve absolute path of symlink target because symlink path has no parent"),
}
} else {
bail!("symlink target has invalid value: {}", target.display())
}
}
fn ensure_subdir_of_base(path: &Path, target: &Path) -> Result<()> {
let realms_base = PathBuf::from(REALMS_BASE_PATH);
match target.parent() {
Some(parent) => {
if parent != realms_base.as_path() {
bail!("target of symlink {} points outside of {} directory: {}", path.display(), REALMS_BASE_PATH, target.display());
}
},
None => bail!("target of symlink {} has invalid value (no parent): {}", path.display(), target.display()),
}
Ok(())
}
}

383
citadel-tools/citadel-realms/src/systemd.rs
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@ -1,383 +0,0 @@
use std::rc::Rc;
use std::cell::RefCell;
use std::process::Command;
use std::path::{Path,PathBuf};
use std::fs::{self,File};
use std::fmt::Write;
use std::io::Write as IoWrite;
use std::env;
const SYSTEMCTL_PATH: &str = "/usr/bin/systemctl";
const MACHINECTL_PATH: &str = "/usr/bin/machinectl";
const SYSTEMD_NSPAWN_PATH: &str = "/run/systemd/nspawn";
const SYSTEMD_UNIT_PATH: &str = "/run/systemd/system";
const DESKTOPD_SERVICE: &str = "citadel-desktopd.service";
use Realm;
use NetworkConfig;
use Result;
use util::{path_filename,is_first_char_alphabetic};
#[derive(Clone)]
pub struct Systemd {
network: Rc<RefCell<NetworkConfig>>,
}
impl Systemd {
pub fn new(network: Rc<RefCell<NetworkConfig>>) -> Systemd {
Systemd { network }
}
pub fn realm_is_active(&self, realm: &Realm) -> Result<bool> {
let active = self.is_active(&self.realm_service_name(realm))?;
let has_config = self.realm_config_exists(realm);
if active && !has_config {
bail!("Realm {} is running, but config files are missing", realm.name());
}
if !active && has_config {
bail!("Realm {} is not running, but config files are present", realm.name());
}
Ok(active)
}
pub fn start_realm(&self, realm: &Realm) -> Result<()> {
if self.realm_is_active(realm)? {
warn!("Realm {} is already running", realm.name());
return Ok(())
}
self.write_realm_launch_config(realm)?;
self.systemctl_start(&self.realm_service_name(realm))?;
if realm.config().emphemeral_home() {
self.setup_ephemeral_home(realm)?;
}
Ok(())
}
pub fn base_image_update_shell(&self) -> Result<()> {
let netconf = self.network.borrow_mut();
let gw = netconf.gateway("clear")?;
let addr = netconf.reserved("clear")?;
let gw_env = format!("--setenv=IFCONFIG_GW={}", gw);
let addr_env = format!("--setenv=IFCONFIG_IP={}", addr);
Command::new("/usr/bin/systemd-nspawn")
.args(&[
&addr_env, &gw_env,
"--quiet",
"--machine=base-appimg-update",
"--directory=/storage/appimg/base.appimg",
"--network-zone=clear",
"/bin/bash", "-c", "/usr/libexec/configure-host0.sh && exec /bin/bash"
]).status()?;
Ok(())
}
fn setup_ephemeral_home(&self, realm: &Realm) -> Result<()> {
// 1) if exists: machinectl copy-to /realms/skel /home/user
if Path::new("/realms/skel").exists() {
self.machinectl_copy_to(realm, "/realms/skel", "/home/user")?;
}
// 2) if exists: machinectl copy-to /realms/realm-$name /home/user
let realm_skel = realm.base_path().join("skel");
if realm_skel.exists() {
self.machinectl_copy_to(realm, realm_skel.to_str().unwrap(), "/home/user")?;
}
let home = realm.base_path().join("home");
if !home.exists() {
return Ok(());
}
// 3) for each : machinectl bind /realms/realm-$name/home/$dir /home/user/$dir
for dent in fs::read_dir(home)? {
let path = dent?.path();
self.bind_mount_home_subdir(realm, &path)?;
}
Ok(())
}
fn bind_mount_home_subdir(&self, realm: &Realm, path: &Path) -> Result<()> {
let path = path.canonicalize()?;
if !path.is_dir() {
return Ok(());
}
let fname = path_filename(&path);
if !is_first_char_alphabetic(fname) {
return Ok(());
}
let from = format!("/realms/realm-{}/home/{}", realm.name(), fname);
let to = format!("/home/user/{}", fname);
self.machinectl_bind(realm, &from, &to)?;
Ok(())
}
pub fn stop_realm(&self, realm: &Realm) -> Result<()> {
if !self.realm_is_active(realm)? {
warn!("Realm {} is not running", realm.name());
return Ok(());
}
self.systemctl_stop(&self.realm_service_name(realm))?;
self.remove_realm_launch_config(realm)?;
self.network.borrow_mut().free_allocation_for(realm.config().network_zone(), realm.name())?;
Ok(())
}
pub fn restart_desktopd(&self) -> Result<bool> {
self.systemctl_restart(DESKTOPD_SERVICE)
}
pub fn stop_desktopd(&self) -> Result<bool> {
self.systemctl_stop(DESKTOPD_SERVICE)
}
fn realm_service_name(&self, realm: &Realm) -> String {
format!("realm-{}.service", realm.name())
}
fn is_active(&self, name: &str) -> Result<bool> {
Command::new(SYSTEMCTL_PATH)
.args(&["--quiet", "is-active", name])
.status()
.map(|status| status.success())
.map_err(|e| format_err!("failed to execute{}: {}", MACHINECTL_PATH, e))
}
fn systemctl_restart(&self, name: &str) -> Result<bool> {
self.run_systemctl("restart", name)
}
fn systemctl_start(&self, name: &str) -> Result<bool> {
self.run_systemctl("start", name)
}
fn systemctl_stop(&self, name: &str) -> Result<bool> {
self.run_systemctl("stop", name)
}
fn run_systemctl(&self, op: &str, name: &str) -> Result<bool> {
Command::new(SYSTEMCTL_PATH)
.arg(op)
.arg(name)
.status()
.map(|status| status.success())
.map_err(|e| format_err!("failed to execute {}: {}", MACHINECTL_PATH, e))
}
fn machinectl_copy_to(&self, realm: &Realm, from: &str, to: &str) -> Result<()> {
Command::new(MACHINECTL_PATH)
.args(&["copy-to", realm.name(), from, to ])
.status()
.map_err(|e| format_err!("failed to machinectl copy-to {} {} {}: {}", realm.name(), from, to, e))?;
Ok(())
}
fn machinectl_bind(&self, realm: &Realm, from: &str, to: &str) -> Result<()> {
Command::new(MACHINECTL_PATH)
.args(&["--mkdir", "bind", realm.name(), from, to ])
.status()
.map_err(|e| format_err!("failed to machinectl bind {} {} {}: {}", realm.name(), from, to, e))?;
Ok(())
}
pub fn machinectl_exec_shell(&self, realm: &Realm, as_root: bool) -> Result<()> {
let namevar = format!("--setenv=REALM_NAME={}", realm.name());
let user = if as_root { "root" } else { "user" };
let user_at_host = format!("{}@{}", user, realm.name());
Command::new(MACHINECTL_PATH)
.args(&[ &namevar, "--quiet", "shell", &user_at_host, "/bin/bash"])
.status()
.map_err(|e| format_err!("failed to execute{}: {}", MACHINECTL_PATH, e))?;
Ok(())
}
pub fn machinectl_shell(&self, realm: &Realm, args: &[String], launcher: bool) -> Result<()> {
let namevar = format!("--setenv=REALM_NAME={}", realm.name());
let mut cmd = Command::new(MACHINECTL_PATH);
cmd.arg("--quiet");
match env::var("DESKTOP_STARTUP_ID") {
Ok(val) => {
cmd.arg("-E");
cmd.arg(&format!("DESKTOP_STARTUP_ID={}", val));
},
Err(_) => {},
};
cmd.arg(&namevar);
cmd.arg("shell");
cmd.arg(format!("user@{}", realm.name()));
if launcher {
cmd.arg("/usr/libexec/launch");
}
for arg in args {
cmd.arg(&arg);
}
cmd.status().map_err(|e| format_err!("failed to execute{}: {}", MACHINECTL_PATH, e))?;
Ok(())
}
fn realm_service_path(&self, realm: &Realm) -> PathBuf {
PathBuf::from(SYSTEMD_UNIT_PATH).join(self.realm_service_name(realm))
}
fn realm_nspawn_path(&self, realm: &Realm) -> PathBuf {
PathBuf::from(SYSTEMD_NSPAWN_PATH).join(format!("{}.nspawn", realm.name()))
}
fn realm_config_exists(&self, realm: &Realm) -> bool {
self.realm_service_path(realm).exists() || self.realm_nspawn_path(realm).exists()
}
fn remove_realm_launch_config(&self, realm: &Realm) -> Result<()> {
let nspawn_path = self.realm_nspawn_path(realm);
if nspawn_path.exists() {
fs::remove_file(&nspawn_path)?;
}
let service_path = self.realm_service_path(realm);
if service_path.exists() {
fs::remove_file(&service_path)?;
}
Ok(())
}
fn write_realm_launch_config(&self, realm: &Realm) -> Result<()> {
let nspawn_path = self.realm_nspawn_path(realm);
let nspawn_content = self.generate_nspawn_file(realm)?;
self.write_launch_config_file(&nspawn_path, &nspawn_content)
.map_err(|e| format_err!("failed to write nspawn config file {}: {}", nspawn_path.display(), e))?;
let service_path = self.realm_service_path(realm);
let service_content = self.generate_service_file(realm);
self.write_launch_config_file(&service_path, &service_content)
.map_err(|e| format_err!("failed to write service config file {}: {}", service_path.display(), e))?;
Ok(())
}
/// Write the string `content` to file `path`. If the directory does
/// not already exist, create it.
fn write_launch_config_file(&self, path: &Path, content: &str) -> Result<()> {
match path.parent() {
Some(parent) => {
if !parent.exists() {
fs::create_dir_all(parent)?;
}
},
None => bail!("config file path {} has no parent?", path.display()),
};
let mut f = File::create(path)?;
f.write_all(content.as_bytes())?;
Ok(())
}
fn generate_nspawn_file(&self, realm: &Realm) -> Result<String> {
Ok(NSPAWN_FILE_TEMPLATE
.replace("$EXTRA_BIND_MOUNTS", &self.generate_extra_bind_mounts(realm)?)
.replace("$NETWORK_CONFIG", &self.generate_network_config(realm)?))
}
fn generate_extra_bind_mounts(&self, realm: &Realm) -> Result<String> {
let config = realm.config();
let mut s = String::new();
if config.emphemeral_home() {
writeln!(s, "TemporaryFileSystem=/home/user:mode=755,uid=1000,gid=1000")?;
} else {
writeln!(s, "Bind={}/home:/home/user", realm.base_path().display())?;
}
if config.shared_dir() && Path::new("/realms/Shared").exists() {
writeln!(s, "Bind=/realms/Shared:/home/user/Shared")?;
}
if config.kvm() {
writeln!(s, "Bind=/dev/kvm")?;
}
if config.gpu() {
writeln!(s, "Bind=/dev/dri/renderD128")?;
}
if config.sound() {
writeln!(s, "Bind=/dev/snd")?;
writeln!(s, "Bind=/dev/shm")?;
writeln!(s, "BindReadOnly=/run/user/1000/pulse:/run/user/host/pulse")?;
}
if config.x11() {
writeln!(s, "BindReadOnly=/tmp/.X11-unix")?;
}
if config.wayland() {
writeln!(s, "BindReadOnly=/run/user/1000/wayland-0:/run/user/host/wayland-0")?;
}
Ok(s)
}
fn generate_network_config(&self, realm: &Realm) -> Result<String> {
let mut s = String::new();
if realm.config().network() {
let mut netconf = self.network.borrow_mut();
let zone = realm.config().network_zone();
let addr = netconf.allocate_address_for(zone, realm.name())?;
let gw = netconf.gateway(zone)?;
writeln!(s, "Environment=IFCONFIG_IP={}", addr)?;
writeln!(s, "Environment=IFCONFIG_GW={}", gw)?;
writeln!(s, "[Network]")?;
writeln!(s, "Zone=clear")?;
} else {
writeln!(s, "[Network]")?;
writeln!(s, "Private=true")?;
}
Ok(s)
}
fn generate_service_file(&self, realm: &Realm) -> String {
let rootfs = format!("/realms/realm-{}/rootfs", realm.name());
REALM_SERVICE_TEMPLATE.replace("$REALM_NAME", realm.name()).replace("$ROOTFS", &rootfs)
}
}
pub const NSPAWN_FILE_TEMPLATE: &str = r###"
[Exec]
Boot=true
$NETWORK_CONFIG
[Files]
BindReadOnly=/usr/share/themes
BindReadOnly=/usr/share/icons/Paper
BindReadOnly=/storage/citadel-state/resolv.conf:/etc/resolv.conf
$EXTRA_BIND_MOUNTS
"###;
pub const REALM_SERVICE_TEMPLATE: &str = r###"
[Unit]
Description=Application Image $REALM_NAME instance
Wants=citadel-desktopd.service
[Service]
Environment=SYSTEMD_NSPAWN_SHARE_NS_IPC=1
ExecStart=/usr/bin/systemd-nspawn --quiet --notify-ready=yes --keep-unit --machine=$REALM_NAME --link-journal=try-guest --directory=$ROOTFS
KillMode=mixed
Type=notify
RestartForceExitStatus=133
SuccessExitStatus=133
"###;

137
citadel-tools/citadel-realms/src/util.rs
View File

@ -1,137 +0,0 @@
use std::path::Path;
use std::fs;
use std::os::unix::ffi::OsStrExt;
use std::os::unix::fs::MetadataExt;
use std::ffi::CString;
use std::io::{self,Write};
use libc;
use walkdir::WalkDir;
use Result;
pub fn path_filename(path: &Path) -> &str {
if let Some(osstr) = path.file_name() {
if let Some(name) = osstr.to_str() {
return name;
}
}
""
}
fn is_alphanum_or_dash(c: char) -> bool {
is_ascii(c) && (c.is_alphanumeric() || c == '-')
}
fn is_ascii(c: char) -> bool {
c as u32 <= 0x7F
}
pub fn is_first_char_alphabetic(s: &str) -> bool {
if let Some(c) = s.chars().next() {
return is_ascii(c) && c.is_alphabetic()
}
false
}
const MAX_REALM_NAME_LEN:usize = 128;
/// Valid realm names:
/// * must start with an alphabetic ascii letter character
/// * may only contain ascii characters which are letters, numbers, or the dash '-' symbol
/// * must not be empty or have a length exceeding 128 characters
pub fn is_valid_realm_name(name: &str) -> bool {
name.len() <= MAX_REALM_NAME_LEN &&
// Also false on empty string
is_first_char_alphabetic(name) &&
name.chars().all(is_alphanum_or_dash)
}
pub fn chown(path: &Path, uid: u32, gid: u32) -> io::Result<()> {
let cstr = CString::new(path.as_os_str().as_bytes())?;
unsafe {
if libc::chown(cstr.as_ptr(), uid, gid) == -1 {
return Err(io::Error::last_os_error());
}
}
Ok(())
}
fn copy_path(from: &Path, to: &Path) -> Result<()> {
if to.exists() {
bail!("destination path {} already exists which is not expected", to.display());
}
let meta = from.metadata()?;
if from.is_dir() {
fs::create_dir(to)?;
} else {
fs::copy(&from, &to)?;
}
chown(to, meta.uid(), meta.gid())?;
Ok(())
}
pub fn copy_tree(from_base: &Path, to_base: &Path) -> Result<()> {
for entry in WalkDir::new(from_base) {
let path = entry?.path().to_owned();
let to = to_base.join(path.strip_prefix(from_base)?);
if &to != to_base {
copy_path(&path, &to)
.map_err(|e| format_err!("failed to copy {} to {}: {}", path.display(), to.display(), e))?;
}
}
Ok(())
}
use termcolor::{ColorChoice,Color,ColorSpec,WriteColor,StandardStream};
pub struct ColoredOutput {
color_bright: ColorSpec,
color_bold: ColorSpec,
color_dim: ColorSpec,
stream: StandardStream,
}
impl ColoredOutput {
pub fn new() -> ColoredOutput {
ColoredOutput::new_with_colors(Color::Rgb(0, 110, 180), Color::Rgb(100, 100, 80))
}
pub fn new_with_colors(bright: Color, dim: Color) -> ColoredOutput {
let mut out = ColoredOutput {
color_bright: ColorSpec::new(),
color_bold: ColorSpec::new(),
color_dim: ColorSpec::new(),
stream: StandardStream::stdout(ColorChoice::AlwaysAnsi),
};
out.color_bright.set_fg(Some(bright.clone()));
out.color_bold.set_fg(Some(bright)).set_bold(true);
out.color_dim.set_fg(Some(dim));
out
}
pub fn write(&mut self, s: &str) -> &mut Self {
write!(&mut self.stream, "{}", s).unwrap();
self.stream.reset().unwrap();
self
}
pub fn bright(&mut self, s: &str) -> &mut Self {
self.stream.set_color(&self.color_bright).unwrap();
self.write(s)
}
pub fn bold(&mut self, s: &str) -> &mut Self {
self.stream.set_color(&self.color_bold).unwrap();
self.write(s)
}
pub fn dim(&mut self, s: &str) -> &mut Self {
self.stream.set_color(&self.color_dim).unwrap();
self.write(s)
}
}

3
citadel-tools/citadel-update/.gitignore vendored
View File

@ -1,3 +0,0 @@
**/target/
**/*.rs.bk
.idea/

535
citadel-tools/citadel-update/Cargo.lock generated
View File

@ -1,535 +0,0 @@
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19
citadel-tools/citadel-update/Cargo.toml
View File

@ -1,19 +0,0 @@
[package]
name = "citadel-update"
version = "0.1.0"
authors = ["Bruce Leidl <bruce@subgraph.com>"]
homepage = "https://github.com/subgraph/citadel"
[dependencies]
clap = "2.30.0"
failure = "0.1.1"
libc = "0.2"
nix = "0.10.0"
ed25519-dalek = "^0.6"
rand = "0.4.2"
sha2 = "0.7.0"
toml = "0.4.5"
serde_derive = "1.0.27"
serde = "1.0.27"
rustc-serialize = "0.3.24"
lzma-rs = "0.1.0"

13
citadel-tools/citadel-update/conf/citadel-update.conf
View File

@ -1,13 +0,0 @@
# This is where images to be installed are stored
citadel_updates = "/storage/citadel-updates"
kernel_updates = "/storage/kernel-updates"
# This is where update images are built
image_builds = "/storage/image-builds"
[channel.test]
update_server = ""
pubkey = "7a6743a61cff946083f2496c4df0e5afb958c84eec3185e63cbe7a695c20e732"

154
citadel-tools/citadel-update/src/blockdev.rs
View File

@ -1,154 +0,0 @@
use std::path::Path;
use std::fs::File;
use std::io::{Read,Write,Seek,SeekFrom};
use std::os::unix::io::AsRawFd;
use std::fs::OpenOptions;
use std::os::unix::fs::OpenOptionsExt;
use libc;
use Result;
use util::path_str;
const REQUIRED_ALIGNMENT: usize = 4096;
const DEFAULT_ALIGNMENT: usize = REQUIRED_ALIGNMENT;
pub struct AlignedBuffer {
buffer: Vec<u8>,
alignment: usize,
size: usize,
align_offset: usize,
}
impl AlignedBuffer {
pub fn new(size: usize) -> AlignedBuffer {
AlignedBuffer::new_with_alignment(size, DEFAULT_ALIGNMENT)
}
pub fn from_slice(bytes: &[u8]) -> AlignedBuffer {
AlignedBuffer::from_slice_with_alignment(bytes, DEFAULT_ALIGNMENT)
}
pub fn new_with_alignment(size: usize, alignment: usize) -> AlignedBuffer {
AlignedBuffer {
alignment, size,
buffer: vec![0; size + alignment],
align_offset: 0,
}
}
pub fn from_slice_with_alignment(bytes: &[u8], alignment: usize) -> AlignedBuffer {
let mut ab = AlignedBuffer::new_with_alignment(bytes.len(), alignment);
ab.as_mut().copy_from_slice(bytes);
ab
}
///
/// Calculates an offset into `self.buffer` array that is physically
/// located at a 4096 byte alignment boundary and returns slice at
/// this offset. `self.align_offset` is set so that access functions
/// will use the right offset.
///
/// I/O on block devices must use 4k aligned memory:
///
/// https://people.redhat.com/msnitzer/docs/io-limits.txt
///
/// Or maybe just 512 byte aligned memory:
///
/// https://www.quora.com/Why-does-O_DIRECT-require-I-O-to-be-512-byte-aligned
///
fn align_buffer(&mut self) {
let addr = self.buffer.as_ptr() as usize;
let offset = self.alignment - (addr & (self.alignment - 1));
self.align_offset = offset;
}
}
impl AsRef<[u8]> for AlignedBuffer {
fn as_ref(&self) -> &[u8] {
let start = self.align_offset;
let end = start + self.size;
&(self.buffer.as_slice())[start..end]
}
}
impl AsMut<[u8]> for AlignedBuffer {
fn as_mut(&mut self) -> &mut [u8] {
self.align_buffer();
let start = self.align_offset;
let end = start + self.size;
&mut self.buffer.as_mut_slice()[start..end]
}
}
pub const SECTOR_SIZE: usize = 512;
pub const ALIGNMENT_MASK: usize = 4095;
ioctl!(read blk_getsize64 with 0x12, 114; u64);
pub struct BlockDev {
file: File,
}
impl BlockDev {
pub fn open_ro<P: AsRef<Path>>(path: P) -> Result<BlockDev> {
BlockDev::open(path.as_ref(), false)
}
pub fn open_rw<P: AsRef<Path>>(path: P) -> Result<BlockDev> {
BlockDev::open(path.as_ref(), true)
}
fn open(path: &Path, write: bool) -> Result<BlockDev> {
let mut oo = OpenOptions::new();
oo.read(true);
oo.custom_flags(libc::O_DIRECT | libc::O_SYNC);
if write {
oo.write(true);
}
let file = oo.open(path)
.map_err(|e| format_err!("Failed to open block device {}: {}", path_str(path), e))?;
Ok(BlockDev{file})
}
pub fn size(&self) -> Result<u64> {
let mut sz = 0u64;
unsafe {
blk_getsize64(self.file.as_raw_fd(), &mut sz)
.map_err(|e| format_err!("Error calling getsize ioctl on block device: {}", e))?;
}
Ok(sz)
}
pub fn nsectors(&self) -> Result<usize> {
Ok((self.size()? as usize) >> 9)
}
fn setup_io(&mut self, offset: usize, buffer: &[u8]) -> Result<()> {
let addr = buffer.as_ptr() as usize;
if addr & ALIGNMENT_MASK != 0 {
bail!("block device i/o attempted with incorrectly aligned buffer: {:p}", buffer);
}
if buffer.len() % SECTOR_SIZE != 0 {
bail!("buffer length {} is not a multiple of sector size", buffer.len());
}
let count = buffer.len() / SECTOR_SIZE;
if offset + count > self.nsectors()? {
bail!("sector_io({}, {}) is past end of device", offset, buffer.len());
}
self.file.seek(SeekFrom::Start((offset * SECTOR_SIZE) as u64))?;
Ok(())
}
pub fn read_sectors(&mut self, offset: usize, buffer: &mut [u8]) -> Result<()> {
self.setup_io(offset, buffer)?;
self.file.read_exact(buffer)?;
Ok(())
}
pub fn write_sectors(&mut self, offset: usize, buffer: &[u8]) -> Result<()> {
self.setup_io(offset, buffer)?;
self.file.write_all(buffer)?;
Ok(())
}
}

100
citadel-tools/citadel-update/src/boot.rs
View File

@ -1,100 +0,0 @@
use {Result,Partition,Config};
pub struct BootSelection {
partitions: Vec<Partition>,
}
impl BootSelection {
pub fn load_partitions() -> Result<BootSelection> {
let partitions = Partition::rootfs_partitions()
.map_err(|e| format_err!("Could not load rootfs partition info: {}", e))?;
Ok(BootSelection {
partitions
})
}
pub fn choose_install_partition(&self) -> Option<&Partition> {
self.choose(|p| {
// first pass, if there is a partition which is not mounted and
// not initialized use that one
!p.is_mounted() && !p.is_initialized()
}).or_else(|| self.choose(|p| {
// second pass, just find one that's not mounted
!p.is_mounted()
}))
}
fn choose<F>(&self, pred: F) -> Option<&Partition>
where F: Sized + Fn(&&Partition) -> bool
{
self.partitions.iter().find(pred)
}
/// Find the best rootfs partition to boot from
pub fn choose_boot_partition(&self) -> Option<&Partition> {
let mut best: Option<&Partition> = None;
for p in &self.partitions {
if is_better(&best, p) {
best = Some(p);
}
}
best
}
/// Perform checks for error states at boot time.
pub fn scan_boot_partitions(&self, config: &Config) -> Result<()> {
for p in &self.partitions {
if let Err(e) = p.boot_scan(config) {
warn!("error in bootscan of partition {}: {}", p.path_str(), e);
}
}
Ok(())
}
}
fn is_better<'a>(current_best: &Option<&'a Partition>, other: &'a Partition) -> bool {
// Only consider partitions in state NEW or state GOOD
if !other.is_good() && !other.is_new() {
return false;
}
// If metainfo is broken, then no, it's not better
if !other.metainfo().is_ok() {
return false;
}
let best = match *current_best {
Some(p) => p,
// No current 'best', so 'other' is better, whatever it is.
None => return true,
};
// First parition with PREFER flag trumps everything else
if best.is_preferred() {
return false;
}
// These are guaranteed to unwrap()
let best_version = best.metainfo().unwrap().version();
let other_version = other.metainfo().unwrap().version();
if best_version > other_version {
return false;
}
if other_version > best_version {
return true;
}
// choose NEW over GOOD if versions are the same
if other.is_new() && best.is_good() {
return true;
}
// ... but if all things otherwise match, return first match
false
}

138
citadel-tools/citadel-update/src/config.rs
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@ -1,138 +0,0 @@
use std::path::Path;
use std::collections::HashMap;
use ed25519_dalek::{Signature,PublicKey,Keypair};
use rustc_serialize::hex::FromHex;
use sha2::Sha512;
use toml;
use util::{read_file_as_string,path_str};
use Result;
const DEFAULT_CONFIG_PATH: &str = "/usr/share/citadel/citadel-rootfs.conf";
fn default_citadel_updates() -> String { "/storage/citadel-updates".to_string() }
fn default_kernel_updates() -> String { "/storage/kernel-updates".to_string() }
fn default_image_builds() -> String { "/storage/image-builds".to_string() }
#[derive(Deserialize)]
pub struct Config {
default_channel: Option<String>,
#[serde (default= "default_citadel_updates")]
citadel_updates: String,
#[serde (default = "default_kernel_updates")]
kernel_updates: String,
#[serde (default = "default_image_builds")]
image_builds: String,
channel: HashMap<String, Channel>,
}
impl Config {
pub fn load_default() -> Result<Config> {
Config::load(DEFAULT_CONFIG_PATH)
}
pub fn load<P: AsRef<Path>>(path: P) -> Result<Config> {
let config = match Config::from_path(path.as_ref()) {
Ok(config) => config,
Err(e) => bail!("Failed to load config file {}: {}", path_str(path.as_ref()), e),
};
Ok(config)
}
fn from_path(path: &Path) -> Result<Config> {
let s = read_file_as_string(path.as_ref())?;
let mut config = toml::from_str::<Config>(&s)?;
for (k,v) in config.channel.iter_mut() {
v.name = k.to_string();
}
Ok(config)
}
pub fn get_default_channel(&self) -> Option<Channel> {
if let Some(ref name) = self.default_channel {
if let Some(c) = self.channel(name) {
return Some(c);
}
}
if self.channel.len() == 1 {
return self.channel.values().next().map(|c| c.clone());
}
None
}
pub fn channel(&self, name: &str) -> Option<Channel> {
self.channel.get(name).map(|c| c.clone() )
}
pub fn citadel_updates_base(&self) -> &str {
&self.citadel_updates
}
pub fn kernel_updates_base(&self) -> &str {
&self.kernel_updates
}
pub fn image_builds_base(&self) -> &str {
&self.image_builds
}
pub fn get_private_key(&self, channel: &str) -> Option<String> {
if let Some(channel_config) = self.channel.get(channel) {
if let Some(ref key) = channel_config.keypair {
return Some(key.clone());
}
}
None
}
pub fn get_public_key(&self, channel: &str) -> Option<String> {
if let Some(channel_config) = self.channel.get(channel) {
return Some(channel_config.pubkey.clone());
}
None
}
}
#[derive(Deserialize,Clone)]
pub struct Channel {
update_server: Option<String>,
pubkey: String,
keypair: Option<String>,
#[serde(skip)]
name: String,
}
impl Channel {
pub fn name(&self) -> &str {
&self.name
}
pub fn sign(&self, data: &[u8]) -> Result<Signature> {
let keybytes = match self.keypair {
Some(ref hex) => hex.from_hex()?,
None => bail!("No private signing key available for channel {}", self.name),
};
let privkey = Keypair::from_bytes(&keybytes)?;
let sig = privkey.sign::<Sha512>(data);
Ok(sig)
}
pub fn verify(&self, data: &[u8], sigbytes: &[u8]) -> Result<bool> {
let keybytes = self.pubkey.from_hex()?;
let pubkey = PublicKey::from_bytes(&keybytes)?;
let sig = Signature::from_bytes(sigbytes)?;
Ok(pubkey.verify::<Sha512>(data, &sig))
}
}

290
citadel-tools/citadel-update/src/main.rs
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@ -1,290 +0,0 @@
#[macro_use] extern crate failure;
#[macro_use] extern crate nix;
#[macro_use] extern crate serde_derive;
extern crate libc;
extern crate clap;
extern crate serde;
extern crate toml;
extern crate ed25519_dalek;
extern crate sha2;
extern crate rand;
extern crate rustc_serialize;
thread_local! {
pub static VERBOSE: RefCell<bool> = RefCell::new(false);
pub static SYSOP: RefCell<bool> = RefCell::new(false);
}
pub fn verbose() -> bool {
VERBOSE.with(|f| {
*f.borrow()
})
}
fn sysop() -> bool {
SYSOP.with(|f| {
*f.borrow()
})
}
macro_rules! info {
($e:expr) => { if ::verbose() { println!("[+] {}", $e);} };
($fmt:expr, $($arg:tt)+) => { if ::verbose() { println!("[+] {}", format!($fmt, $($arg)+));} };
}
macro_rules! warn {
($e:expr) => { if ::verbose() { println!("WARNING: {}", $e);} };
($fmt:expr, $($arg:tt)+) => { if ::verbose() { println!("WARNING: {}", format!($fmt, $($arg)+));} };
}
macro_rules! notify {
($e:expr) => { println!("[+] {}", $e); };
($fmt:expr, $($arg:tt)+) => { println!("[+] {}", format!($fmt, $($arg)+)); };
}
use std::result;
use std::process::exit;
use failure::Error;
use clap::{App,Arg,ArgMatches, SubCommand};
use clap::AppSettings::*;
use sha2::Sha512;
use rand::OsRng;
use ed25519_dalek::Keypair;
use rustc_serialize::hex::ToHex;
use std::cell::RefCell;
use std::env;
pub use config::Config;
pub use metainfo::Metainfo;
pub use blockdev::BlockDev;
pub use partition::{Partition,MAX_METAINFO_LEN};
use unpacker::UpdateImageUnpacker;
use packer::UpdateImagePacker;
use boot::BootSelection;
mod boot;
mod metainfo;
mod partition;
mod blockdev;
mod config;
mod packer;
mod unpacker;
mod util;
pub type Result<T> = result::Result<T,Error>;
fn main() {
match env::var("CITADEL_SYSOP") {
Ok(_) => SYSOP.with(|f| *f.borrow_mut() = true),
_ => {},
};
let mut app = App::new("citadel-update")
.about("Subgraph Citadel update and rootfs management")
.settings(&[ArgRequiredElseHelp, ColoredHelp, DisableHelpSubcommand, DisableVersion, DeriveDisplayOrder])
.arg(Arg::with_name("v")
.help("Verbose output")
.short("v")
.long("verbose"))
.arg(Arg::with_name("config")
.help("Optionally specify an alternate config file")
.takes_value(true)
.short("c") .long("config"))
.subcommand(SubCommand::with_name("list")
.about("Show information about all rootfs partitions"))
.subcommand(SubCommand::with_name("which-boot")
.about("Show which rootfs paritition would currently boot according to the boot selection algorithm"))
.subcommand(SubCommand::with_name("verify-update")
.about("Verify the signature of an update image"))
.subcommand(SubCommand::with_name("update")
.about("Download update if available and install")
.arg(Arg::with_name("download-only")
.help("Only download available update, don't install")
.long("download")))
.subcommand(SubCommand::with_name("install-update")
.about("Install an update image")
.arg(Arg::with_name("image")
.required(true)));
if sysop() {
app = app.subcommand(SubCommand::with_name("build-update")
.about("Create an update image from a raw citadel-image.ext2 file")
.arg(Arg::with_name("image")
.required(true)))
.subcommand(SubCommand::with_name("genkeys")
.about("Generate a new update keypair"));
}
let matches = app.get_matches();
let config = load_config(&matches);
if matches.is_present("v") {
VERBOSE.with(|f| *f.borrow_mut() = true);
}
let result = match matches.subcommand() {
("list", Some(_)) => list_cmd(&config),
("which-boot", Some(_)) => { which_boot_cmd(&config)},
("update", Some(m)) => update_cmd(&config, m),
("verify-update", Some(m)) => verify_update_cmd(&config, m),
("install-update", Some(m)) => install_update_cmd(&config, m),
("build-update", Some(m)) => build_update_cmd(&config, m),
("genkeys", Some(_)) => genkeys_cmd(),
("mount-rootfs", Some(m)) => mount_rootfs_cmd(&config, m),
(s, Some(_)) => {info!("subcommand: {}", s); Ok(())},
_ => Ok(()),
};
if let Err(e) = result {
println!("{}", e);
exit(1);
}
}
fn load_config(arg_matches: &ArgMatches) -> Config {
let config_load = match arg_matches.value_of("config") {
Some(path) => Config::load(path),
None => Config::load_default(),
};
match config_load {
Ok(config) => config,
Err(e) => {
println!("{}", e);
exit(1);
}
}
}
fn list_cmd(_config: &Config) -> Result<()> {
println!("{:^30} {:^14} {:^8} {:^8} {:^12}", "DEVICE PATH", "MOUNTED", "CHANNEL", "VERSION", "STATUS");
for p in Partition::rootfs_partitions()? {
let info = partition_info(&p);
println!("{:^30} {:^14} {:^8} {:^8} {:^12}", info.0, info.1, info.2, info.3, info.4);
}
Ok(())
}
fn partition_info(part: &Partition) -> (String,String,String,String,String) {
let mounted = if part.is_mounted() { "[Yes]".to_string() } else { String::new() };
let status = if part.is_initialized() { part.status_label() } else { "Not Initialized".to_string() };
let (channel, version) = match part.metainfo() {
Ok(meta) => (meta.channel().to_string(), meta.version().to_string()),
_ => (String::new(), String::new()),
};
(part.path_str().to_string(), mounted, channel, version, status)
}
fn mount_rootfs_cmd(_config: &Config, _matches: &ArgMatches) -> Result<()> {
// mounting installer rootfs should happen here too?
// perhaps based on cmd line flag
// maybe define guid like the gpt generator looks for
// for: rootfs inside luks, rootfs outside luks
let bs = BootSelection::load_partitions()?;
let _p = match bs.choose_boot_partition() {
Some(p) => p,
None => bail!("None of the rootfs partitions have a bootable image"),
};
Ok(())
}
fn which_boot_cmd(_config: &Config) -> Result<()> {
let select = BootSelection::load_partitions()?;
match select.choose_boot_partition() {
Some(part) => {
notify!("Next boot will be from partition: {}", part.path_str());
},
None => {
warn!("None of the rootfs partitions are currently in bootable state.");
warn!("Unless a valid image is installed, computer will fail to boot");
}
}
Ok(())
}
fn verify_update_cmd(_config: &Config, _matches: &ArgMatches) -> Result<()> {
println!("do verify_update");
Ok(())
}
fn update_cmd(_config: &Config, _matches: &ArgMatches) -> Result<()> {
// note to self, remember to verify that downloaded update image version matches the version
// which is expected.
Ok(())
}
fn install_update_cmd(config: &Config, matches: &ArgMatches) -> Result<()> {
let image_path = match matches.value_of("image") {
Some(val) => val,
None => bail!("install-update requires an image path"),
};
let unpack = UpdateImageUnpacker::open(image_path, config)?;
info!("unpacking image channel: {} version: {}", unpack.metainfo().channel(), unpack.metainfo().version());
unpack.unpack_disk_image()?;
info!("decompressing image");
unpack.decompress_disk_image()?;
info!("verifying shasum");
unpack.verify_shasum()?;
let bs = BootSelection::load_partitions()?;
let p = match bs.choose_install_partition() {
Some(p) => p,
None => bail!("None of the rootfs partitions are available to install update to"),
};
info!("installing to {}", p.path_str());
unpack.write_partition(p)?;
notify!("Update image successfully installed to {}", p.path_str());
//update::UpdateImage::new(path);
// 1) read header, extract metainfo
// 2) verify signature on metainfo
// 3) determine if this version/channel makes sense to be installed
// 4) xtrat image data to temporary file with https://crates.io/crates/lzma-rs
// 5) verify sha256 on image data
//
// 6) choose rootfs partition
// 7) write partition info block, setting status to INVALID
// 8) write update image to device
// 9) run verifyupdate using provided --salt
// 10) re-rewrite parition info block with status NEW
Ok(())
}
fn build_update_cmd(config: &Config, matches: &ArgMatches) -> Result<()> {
let image_path = match matches.value_of("image") {
Some(val) => val,
None => bail!("build-update requires an image path"),
};
let channel = match config.get_default_channel() {
Some(ch) => ch,
None => bail!("Could not determine default channel from config file"),
};
let mut builder = UpdateImagePacker::new(config, channel, image_path)?;
builder.build()?;
Ok(())
}
fn genkeys_cmd() -> Result<()> {
let mut rng = OsRng::new()?;
let keypair = Keypair::generate::<Sha512>(&mut rng);
println!("pubkey = \"{}\"", keypair.public.to_bytes().to_hex());
println!("privkey = \"{}\"", keypair.to_bytes().to_hex());
Ok(())
}

48
citadel-tools/citadel-update/src/metainfo.rs
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@ -1,48 +0,0 @@
#[derive(Deserialize,Serialize,Clone)]
pub struct Metainfo {
channel: String,
version: u32,
base_version: u32,
date: String,
gitrev: String,
nsectors: u32,
shasum: String,
verity_salt: String,
verity_root: String,
}
impl Metainfo {
pub fn channel(&self) -> &str {
&self.channel
}
pub fn version(&self) -> u32 {
self.version
}
pub fn date(&self) -> &str {
&self.date
}
pub fn gitrev(&self) -> &str {
&self.gitrev
}
pub fn nsectors(&self) -> usize {
self.nsectors as usize
}
pub fn shasum(&self) -> &str {
&self.shasum
}
pub fn verity_root(&self) -> &str {
&self.verity_root
}
pub fn verity_salt(&self) -> &str {
&self.verity_salt
}
}

209
citadel-tools/citadel-update/src/packer.rs
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@ -1,209 +0,0 @@
use std::path::Path;
use std::io::{self,Write};
use std::fs::{File,OpenOptions};
use std::collections::HashMap;
use config::{Config,Channel};
use util::*;
use Result;
const IMAGE_FILENAME: &str = "citadel-image.ext2";
///
///
pub struct UpdateImagePacker {
workdir: Workdir,
version: usize,
channel: Channel,
nsectors: usize,
verity_salt: String,
verity_root: String,
shasum: String,
header: Vec<u8>,
}
impl UpdateImagePacker {
pub fn new(config: &Config, channel: Channel, image_path: &str) -> Result<UpdateImagePacker> {
let mut workdir = Workdir::new(config.image_builds_base(), channel.name());
let version = workdir.find_next_version()?;
sanity_check_source(image_path)?;
let mut from = File::open(image_path)?;
let mut to = File::create(workdir.filepath(IMAGE_FILENAME))?;
io::copy(&mut from, &mut to)?;
Ok(UpdateImagePacker {
workdir, version,
channel: channel.to_owned(),
nsectors: 0,
verity_salt: String::new(),
verity_root: String::new(),
shasum: String::new(),
header: Vec::new(),
})
}
pub fn build(&mut self) -> Result<()> {
self.pad_image(4096)?;
let meta = self.workdir.filepath(IMAGE_FILENAME).metadata()?;
self.nsectors = (meta.len() / 512) as usize;
self.build_verity()?;
self.calculate_image_shasum()?;
self.build_update_header()?;
self.compress_image()?;
self.write_update_image()?;
Ok(())
}
fn pad_image(&self, size: usize) -> Result<()> {
let path = self.workdir.filepath(IMAGE_FILENAME);
let meta = path.metadata()?;
let rem = (meta.len() as usize) % size;
if rem == 0 {
return Ok(());
}
let padlen = size - rem;
info!("padding image with {} bytes", padlen);
let zeros = vec![0u8; padlen];
let mut file = OpenOptions::new().append(true).open(&path)?;
file.write_all(&zeros)?;
Ok(())
}
fn build_verity(&mut self) -> Result<()> {
info!("Building dm-verity hash tree");
let verity_output = run_verityformat_command(&self.workdir.filepath(IMAGE_FILENAME), &self.workdir.filepath("verifyhash.out"))?;
write_string_to_file(&self.workdir.filepath("verityinfo"), &verity_output)?;
let map = UpdateImagePacker::parse_verity_output(&verity_output);
self.verity_root = match map.get("Root hash") {
Some(v) => v.to_owned(),
None => bail!("No root hash found in veritysetup output"),
};
self.verity_salt = match map.get("Salt") {
Some(v) => v.to_owned(),
None => bail!("No Salt found in veritysetup output"),
};
info!("Verity root: {}", self.verity_root);
Ok(())
}
fn calculate_image_shasum(&mut self) -> Result<()> {
info!("Calculating sha256 digest over image file");
self.shasum = run_sha256_command(&self.workdir.filepath(IMAGE_FILENAME))?;
Ok(())
}
fn parse_verity_output(output: &str) -> HashMap<String,String> {
let mut map = HashMap::new();
for line in output.lines() {
if let Some((k,v)) = UpdateImagePacker::parse_verity_line(line) {
map.insert(k, v);
}
}
map
}
fn parse_verity_line(line: &str) -> Option<(String,String)> {
let v = line.split(':').map(|s| s.trim())
.collect::<Vec<&str>>();
if v.len() == 2 {
Some((v[0].to_string(), v[1].to_string()))
} else {
None
}
}
fn build_update_header(&mut self) -> Result<()> {
info!("Creating update image header");
let metainfo = self.generate_metainfo()?;
let mut f = File::create(self.workdir.filepath("metainfo"))?;
f.write_all(&metainfo)?;
let sig = self.channel.sign(&metainfo)?;
let mut szbuf = [0u8; 2];
szbuf[0] = (metainfo.len() >> 8) as u8;
szbuf[1] = metainfo.len() as u8;
self.header.write_all(b"UPDT")?;
self.header.write_all(&szbuf)?;
self.header.write_all(&metainfo)?;
self.header.write_all(&sig.to_bytes())?;
Ok(())
}
fn generate_metainfo(&self) -> Result<Vec<u8>> {
let mut v = Vec::new();
writeln!(v, "channel = \"{}\"", self.channel.name())?;
writeln!(v, "version = {}", self.version)?;
writeln!(v, "base_version = {}", self.version)?;
writeln!(v, "date = \"\"")?;
writeln!(v, "gitrev = \"\"")?;
writeln!(v, "nsectors = {}", self.nsectors)?;
writeln!(v, "shasum = \"{}\"", self.shasum)?;
writeln!(v, "verity_salt = \"{}\"", self.verity_salt)?;
writeln!(v, "verity_root = \"{}\"", self.verity_root)?;
Ok(v)
}
fn compress_image(&self) -> Result<()> {
info!("Compressing image file");
run_xz_command(&self.workdir.filepath(IMAGE_FILENAME), false)?;
Ok(())
}
fn write_update_image(&self) -> Result<()> {
let img_path = self.workdir.filepath("citadel-update.img");
info!("writing update image to {}", path_str(&img_path));
let mut out = File::create(&img_path)?;
out.write_all(self.header.as_slice())?;
let mut image = File::open(self.workdir.filepath("citadel-image.ext2.xz"))?;
io::copy(&mut image, &mut out)?;
Ok(())
}
}
fn sanity_check_source<P: AsRef<Path>>(src: P) -> Result<()> {
let src: &Path = src.as_ref();
let meta = match src.metadata() {
Ok(md) => md,
Err(e) => bail!("Could not load image file {}: {}", path_str(src), e),
};
if !meta.file_type().is_file() {
bail!("Image file {} exists but is not a regular file");
}
let filetype = match run_file_command(&src) {
Ok(s) => s,
Err(e) => bail!("{}", e),
};
if filetype.starts_with("XZ") {
bail!("Image file is compressed, decompress first");
} else if !filetype.starts_with("Linux rev 1.0 ext2 filesystem data") {
bail!("Image file is not an ext2 filesystem as expected:\n {}",
filetype.trim_right());
}
if meta.len() % 512 != 0 {
bail!("Image file size is not a multiple of sector size (512 bytes)");
}
Ok(())
}

481
citadel-tools/citadel-update/src/partition.rs
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@ -1,481 +0,0 @@
use std::path::{Path,PathBuf};
use std::str;
use std::cell::{RefCell,Ref};
use toml;
use ed25519_dalek::SIGNATURE_LENGTH;
use Result;
use Metainfo;
use BlockDev;
use Config;
use blockdev::AlignedBuffer;
use util::*;
const MAGIC: &[u8] = b"CTDL";
/// Size in bytes of the Partition Info Block
const BLOCK_SIZE: usize = 4096;
/// Size of the PIB header up to the metainfo data
const HEADER_SIZE: usize = 8;
/// The maximum length of metainfo data in a Partition Info Block.
/// This size is the entire block minus the header and signature.
pub const MAX_METAINFO_LEN: usize = BLOCK_SIZE - (HEADER_SIZE + SIGNATURE_LENGTH);
///
/// Flag to override the algorithm which selects a partition to mount during boot
///
const FLAG_PREFER: u8 = 1;
///
/// The last 4096 bytes of a rootfs block device stores a structure
/// called the Partition Info Block.
///
/// The layout of this structure is the following:
///
/// field size (bytes) offset
/// ----- ------------ ------
///
/// magic 4 0
/// status 1 4
/// flags 1 5
/// length 2 6
///
/// metainfo <length> 8
///
/// signature 64 8 + length
///
/// magic : Must match ascii bytes 'CTDL' for the block to be considered valid
///
/// status : See `PartitionStatus` for description of defined valid values
///
/// flags : Only one flag is defined, `FLAG_PREFER`
///
/// length : Big endian 16 bit size in bytes of metainfo field
///
/// metainfo : A utf-8 TOML document with various fields describing the rootfs image
/// on this partition.
///
/// signature : ed25519 signature of the content of metainfo field
///
struct Infoblock(RefCell<Vec<u8>>);
impl Infoblock {
fn new() -> Infoblock {
let v = vec![0; BLOCK_SIZE];
Infoblock(RefCell::new(v))
}
fn reset(&self) {
for b in &mut self.0.borrow_mut()[..] {
*b = 0;
}
self.write_bytes(0, MAGIC);
}
fn w8(&self, idx: usize, val: u8) {
self.0.borrow_mut()[idx] = val;
}
fn r8(&self, idx: usize) -> u8 {
self.0.borrow()[idx]
}
fn write_bytes(&self, offset: usize, data: &[u8]) {
self.0.borrow_mut()[offset..offset+data.len()].copy_from_slice(data)
}
fn read_bytes(&self, offset: usize, len: usize) -> Vec<u8> {
Vec::from(&self.0.borrow()[offset..offset+len])
}
fn status(&self) -> u8 {
self.r8(4)
}
fn set_status(&self, status: u8) {
self.w8(4, status);
}
fn has_status(&self, status: u8) -> bool {
self.is_valid() && self.status() == status
}
fn flags(&self) -> u8 {
self.r8(5)
}
fn has_flag(&self, flag: u8) -> bool {
self.is_valid() && (self.flags() & flag) == flag
}
/// Returns `true` if flag value changed
fn set_flag(&self, flag: u8, value: bool) -> bool {
let old = self.flags();
if value {
self.w8(5, old | flag);
} else {
self.w8(5, old & !flag);
}
self.flags() == old
}
fn metainfo_len(&self) -> usize {
let high = self.r8(6) as usize;
let low = self.r8(7) as usize;
(high << 8) | low
}
fn set_metainfo_len(&self, mlen: usize) {
assert!(mlen <= MAX_METAINFO_LEN);
let high = (mlen >> 8) as u8;
let low = mlen as u8;
self.w8(6, high);
self.w8(7, low);
}
fn write_metainfo(&self, metainfo: &[u8]) {
self.set_metainfo_len(metainfo.len());
self.write_bytes(8, metainfo);
}
fn write_signature(&self, signature: &[u8]) {
assert_eq!(signature.len(), SIGNATURE_LENGTH);
self.write_bytes(8 + self.metainfo_len(), signature);
}
fn read_metainfo(&self) -> Vec<u8> {
assert!(self.is_valid());
self.read_bytes(8, self.metainfo_len())
}
fn read_signature(&self) -> Vec<u8> {
assert!(self.is_valid());
self.read_bytes(8 + self.metainfo_len(), SIGNATURE_LENGTH)
}
fn is_valid(&self) -> bool {
&self.0.borrow()[0..4] == MAGIC &&
is_valid_status_code(self.status()) &&
self.flags() & !FLAG_PREFER == 0 &&
self.metainfo_len() > 0 && self.metainfo_len() <= MAX_METAINFO_LEN
}
fn from_slice(&self, bytes: &[u8]) {
self.0.borrow_mut().copy_from_slice(bytes);
}
fn as_ref(&self) -> Ref<Vec<u8>> {
self.0.borrow()
}
}
pub struct Partition {
path: PathBuf,
is_mounted: bool,
infoblock: Infoblock,
}
impl Partition {
///
/// Return a `Vec` of all rootfs partitions on the system. Usually
/// there are two (rootfsA and rootfsB).
///
pub fn rootfs_partitions() -> Result<Vec<Partition>> {
let mut v = Vec::new();
for path in rootfs_partition_paths()? {
v.push(Partition::load(&path)?);
}
Ok(v)
}
/// Construct a new `Partition` object for the device `dev` and load
/// the Partition Info Block structure from the block device.
fn load(dev: &Path) -> Result<Partition> {
let is_mounted = is_path_mounted(dev)?;
let part = Partition::new(dev, is_mounted);
part.read_infoblock()?;
Ok(part)
}
fn new(path: &Path, is_mounted: bool) -> Partition {
Partition {
path: path.to_path_buf(),
is_mounted,
infoblock: Infoblock::new(),
}
}
///
/// For the passed in `BlockDev` instance calculate and return
/// the sector offset of the Partition Info Block, which is
/// located 8 sectors (4096 bytes) from the end of the partition.
///
fn infoblock_offset(&self, bdev: &BlockDev) -> Result<usize> {
let nsectors = bdev.nsectors()?;
if nsectors < 8 {
bail!("{} is a block device but it's very short, {} sectors",
self.path_str(), nsectors);
}
Ok(nsectors - 8)
}
///
/// Open the block device for this partition and load the
/// Partition Info Block into the internal buffer `self.infoblock`.
///
fn read_infoblock(&self) -> Result<()> {
let mut dev = BlockDev::open_ro(&self.path)?;
let off = self.infoblock_offset(&dev)?;
let mut buffer = AlignedBuffer::new(BLOCK_SIZE);
dev.read_sectors(off, buffer.as_mut())?;
self.infoblock.from_slice(buffer.as_ref());
Ok(())
}
///
/// Open the block device for this partition and write the
/// internal buffer `self.infoblock` into the Partition Info
/// Block.
///
fn write_infoblock(&self) -> Result<()> {
let mut dev = BlockDev::open_rw(&self.path)?;
let off = self.infoblock_offset(&dev)?;
let buffer = AlignedBuffer::from_slice(self.infoblock.as_ref().as_slice());
dev.write_sectors(off, buffer.as_ref())?;
Ok(())
}
pub fn path(&self) -> &Path {
&self.path
}
pub fn path_str(&self) -> &str {
self.path.to_str().unwrap()
}
///
/// Returns true if this partition is currently mounted and
/// cannot be written to.
///
pub fn is_mounted(&self) -> bool {
self.is_mounted
}
///
/// Update the Partition Info Block for this partition with a new
/// status field.
///
pub fn write_status(&self, status: u8) -> Result<()> {
self.infoblock.set_status(status);
self.write_infoblock()?;
Ok(())
}
pub fn set_prefer_flag(&self, value: bool) -> Result<()> {
if self.infoblock.set_flag(FLAG_PREFER, value) {
self.write_infoblock()?;
}
Ok(())
}
///
/// Write metainfo and signature to the Partition Info Block of this partition.
///
/// This also sets the internal buffer `self.infoblock` to the block contents
/// written to disk.
///
/// Writing new partition info also set status to `STATUS_INVALID` as this function
/// is meant to be called in preparation for writing a raw disk image to partition.
///
/// Caller should write status as `STATUS_NEW` after raw image has been successfully
/// written to partition.
///
pub fn write_partition_info(&self, metainfo: &[u8], signature: &[u8]) -> Result<()> {
let mlen = metainfo.len();
if mlen > MAX_METAINFO_LEN {
bail!("cannot write partition because metainfo field is too long ({} bytes)", metainfo.len());
}
if mlen == 0 {
bail!("cannot write partition because metainfo is empty");
}
if signature.len() != SIGNATURE_LENGTH {
bail!("cannot write partition info because signature has wrong length {} != {}",
signature.len(), SIGNATURE_LENGTH);
}
self.infoblock.reset();
self.infoblock.write_metainfo(metainfo);
self.infoblock.write_signature(signature);
self.write_infoblock()?;
Ok(())
}
///
/// Returns true only if this partition has a valid Partition Information
/// Block and the signature on the metainfo field can be verified with
/// the provided `PublicKey`.
///
pub fn verify_signature(&self, config: &Config) -> Result<bool> {
if !self.infoblock.is_valid() {
bail!("Cannot verify signature because partition is invalid");
}
let metainfo = self.metainfo()?;
let channel = match config.channel(metainfo.channel()) {
Some(ch) => ch,
None => bail!("No public key configured for channel '{}'", metainfo.channel()),
};
let data = self.infoblock.read_metainfo();
let signature = self.infoblock.read_signature();
Ok(channel.verify(&data, &signature)?)
}
///
/// Parse the bytes from the metainfo section of the Partition Information
/// Block and return a `Metainfo` structure.
///
pub fn metainfo(&self) -> Result<Metainfo> {
if !self.infoblock.is_valid() {
bail!("partition is invalid");
}
let bytes = self.infoblock.read_metainfo();
let metainfo = toml::from_slice::<Metainfo>(&bytes)?;
Ok(metainfo)
}
pub fn is_new(&self) -> bool {
self.infoblock.has_status(STATUS_NEW)
}
pub fn is_good(&self) -> bool {
self.infoblock.has_status(STATUS_GOOD)
}
pub fn is_preferred(&self) -> bool {
self.infoblock.has_flag(FLAG_PREFER)
}
pub fn status_label(&self) -> String {
status_code_label(self.infoblock.status())
}
/// `true` if the Partition Info Block fields
/// contain legal values. `false` indicates that
/// the data is corrupted or was never written to
/// this partition.
pub fn is_initialized(&self) -> bool {
self.infoblock.is_valid()
}
pub fn write_image(&self, image_path: &Path, metainfo: &[u8], signature: &[u8]) -> Result<()> {
if self.is_mounted {
bail!("Cannot write to mounted device {}", self.path_str());
}
info!("Writing raw rootfs disk image to {}", self.path_str());
self.write_partition_info(metainfo, signature)?;
run_write_image_dd(image_path, &self.path)?;
let meta = image_path.metadata()?;
let len = meta.len() as usize;
let nblocks = len / 4096;
info!("Generating dm-verity hash tree");
let mut verityinfo = image_path.to_path_buf();
verityinfo.pop();
verityinfo.push("verity-format.out");
let out = run_verityinstall_command(self.path(), self.metainfo()?.verity_salt(), nblocks, len)?;
write_string_to_file(&verityinfo, &out)?;
info!("Setting parition status field to STATUS_NEW");
self.write_status(STATUS_NEW)?;
Ok(())
}
/// Called at boot to perform various checks and possibly
/// update the status field to an error state.
///
/// Mark `STATUS_TRY_BOOT` partition as `STATUS_FAILED`.
///
/// If metainfo cannot be parsed, mark as `STATUS_BAD_META`.
///
/// Verify metainfo signature and mark `STATUS_BAD_SIG` if
/// signature verification fails.
///
pub fn boot_scan(&self, config: &Config) -> Result<()> {
if !self.is_initialized() {
return Ok(());
}
if self.infoblock.status() == STATUS_TRY_BOOT {
warn!("Partition {} has STATUS_TRY_BOOT, assuming it failed boot attempt and marking STATUS_FAILED", self.path_str());
self.write_status(STATUS_FAILED)?;
}
if let Err(_) = self.metainfo() {
warn!("Partition {} has invalid metainfo, setting STATUS_BAD_META", self.path_str());
self.write_status(STATUS_BAD_META)?;
return Ok(());
}
match self.verify_signature(config) {
Err(e) => {
warn!("Error verifying parition signature on {}: {}", self.path_str(), e);
warn!("Partition {} has bad signature, marking STATUS_BAD_SIG", self.path_str());
self.write_status(STATUS_BAD_SIG)?;
},
Ok(false) => {
warn!("Partition {} has bad signature, marking STATUS_BAD_SIG", self.path_str());
self.write_status(STATUS_BAD_SIG)?;
},
Ok(true) => { /* signature good */ },
};
Ok(())
}
}
/// Set on partition before writing a new rootfs disk image
const STATUS_INVALID : u8 = 0;
/// Set on partition after write of new rootfs disk image completes successfully
const STATUS_NEW : u8 = 1;
/// Set on boot selected partition if in `STATUS_NEW` state.
const STATUS_TRY_BOOT: u8 = 2;
/// Set on boot when a `STATUS_TRY_BOOT` partition successfully launches desktop
const STATUS_GOOD : u8 = 3;
/// Set on boot for any partition in state `STATUS_TRY_BOOT`
const STATUS_FAILED : u8 = 4;
/// Set on boot selected partition when signature fails to verify
const STATUS_BAD_SIG : u8 = 5;
/// Set on boot selected partition when Metainfo cannot be parsed from Partition Info Block
const STATUS_BAD_META: u8 = 6;
const CODE_TO_LABEL: [&str; 7] = ["Invalid", "New", "Try Boot", "Good", "Failed Boot", "Bad Signature", "Bad Metainfo"];
fn is_valid_status_code(code: u8) -> bool {
code <= STATUS_BAD_META
}
fn status_code_label(code: u8) -> String {
if is_valid_status_code(code) {
CODE_TO_LABEL[code as usize].to_string()
} else {
format!("Invalid status code: {}", code)
}
}

129
citadel-tools/citadel-update/src/unpacker.rs
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@ -1,129 +0,0 @@
use std::path::{Path,PathBuf};
use std::fs::{self,File};
use std::io::{self,Read};
use toml;
use ed25519_dalek::SIGNATURE_LENGTH;
use Result;
use Config;
use Metainfo;
use Partition;
use util::*;
use MAX_METAINFO_LEN;
pub struct UpdateImageUnpacker {
path: PathBuf,
workdir: Workdir,
metainfo: Metainfo,
metainfo_bytes: Vec<u8>,
signature_bytes: Vec<u8>,
header_len: usize,
}
impl UpdateImageUnpacker {
pub fn open<P: AsRef<Path>>(path: P, config: &Config) -> Result<UpdateImageUnpacker> {
let mut f = File::open(path.as_ref())?;
UpdateImageUnpacker::read_magic(&mut f)?;
let metainfo_bytes = UpdateImageUnpacker::read_metainfo(&mut f)?;
let metainfo = toml::from_slice::<Metainfo>(&metainfo_bytes)?;
let mut signature_bytes = vec![0; SIGNATURE_LENGTH];
f.read_exact(&mut signature_bytes)?;
let channel = match config.channel(metainfo.channel()) {
Some(ch) => ch,
None => bail!("Channel '{}' not found in configuration", metainfo.channel()),
};
if !channel.verify(metainfo_bytes.as_slice(), &signature_bytes)? {
bail!("Signature verification failed");
}
let mut workdir = Workdir::new(config.citadel_updates_base(), metainfo.channel());
workdir.set_version(metainfo.version() as usize)?;
let mlen = metainfo_bytes.len();
Ok(UpdateImageUnpacker {
path: PathBuf::from(path.as_ref()),
workdir, metainfo, metainfo_bytes,
signature_bytes,
header_len: 6 + SIGNATURE_LENGTH + mlen,
})
}
fn read_magic(r: &mut File) -> Result<()> {
let mut buf = [0u8; 4];
r.read_exact(&mut buf)?;
if &buf != b"UPDT" {
bail!("not an update image, bad magic value");
}
Ok(())
}
fn read_metainfo(r: &mut File) -> Result<Vec<u8>> {
let mut lenbuf = [0u8; 2];
r.read_exact(&mut lenbuf)?;
let len = (lenbuf[0] as usize) << 8 | (lenbuf[1] as usize);
if len == 0 || len > MAX_METAINFO_LEN {
bail!("metainfo length field has invalid value: {}", len);
}
let mut bytes = vec![0u8; len];
r.read_exact(bytes.as_mut_slice())?;
Ok(bytes)
}
pub fn metainfo(&self) -> &Metainfo {
&self.metainfo
}
pub fn unpack_disk_image(&self) -> Result<()> {
let mut from = File::open(&self.path)?;
info!("{} -> {}", path_str(&self.path), path_str(&self.workdir.filepath("citadel-image.ext2.xz")));
let mut to = File::create(&self.workdir.filepath("citadel-image.ext2.xz"))?;
let mut discard = vec![0u8; self.header_len];
from.read_exact(&mut discard)?;
io::copy(&mut from, &mut to)?;
Ok(())
}
pub fn decompress_disk_image(&self) -> Result<()> {
let output = self.workdir.filepath("citadel-image.ext2");
if output.exists() {
fs::remove_file(&output)?;
}
run_xz_command(&self.workdir.filepath("citadel-image.ext2.xz"), true)?;
let file_sz = fs::metadata(&output)?.len() as usize;
let meta_sz = self.metainfo.nsectors() * 512;
if file_sz != meta_sz {
bail!("Uncompressed images size {} does not match size declared in metainfo {}", file_sz, meta_sz);
}
Ok(())
}
pub fn verify_shasum(&self) -> Result<()> {
let path = self.workdir.filepath("citadel-image.ext2");
let shasum = run_sha256_command(&path)?;
if shasum != self.metainfo.shasum() {
let mut bad = path.clone();
bad.pop(); bad.push("citadel-image.ext2.badsum");
fs::rename(&path, &bad)?;
bail!("Failed sha256 sum of {}: {}", path_str(&path), shasum);
}
info!("GOOD: {}", shasum);
Ok(())
}
pub fn write_partition(&self, part: &Partition) -> Result<()> {
let path = self.workdir.filepath("citadel-image.ext2");
part.write_image(&path, &self.metainfo_bytes, &self.signature_bytes)?;
Ok(())
}
}

168
citadel-tools/citadel-update/src/util.rs
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@ -1,168 +0,0 @@
use std::path::{Path,PathBuf};
use std::fs::{self,File};
use std::process::Command;
use std::io::{Read,Write,BufReader,BufRead};
use Result;
pub struct Workdir(PathBuf);
impl Workdir {
pub fn new(base: &str, channel: &str) -> Workdir {
let mut pb = PathBuf::from(base);
pb.push(channel);
Workdir(pb)
}
pub fn find_next_version(&mut self) -> Result<usize> {
let mut version = 1;
loop {
let path = self.0.join(version.to_string());
if !path.exists() {
self.set_version(version)?;
return Ok(version);
}
version += 1;
}
}
pub fn set_version(&mut self, version: usize) -> Result<()> {
self.0.push(version.to_string());
fs::create_dir_all(&self.0)?;
Ok(())
}
pub fn filepath(&self, name: &str) -> PathBuf {
self.0.join(name)
}
}
///
/// Returns `true` if `path` matches the source field (first field)
/// of any of the mount lines listed in /proc/mounts
///
pub fn is_path_mounted(path: &Path) -> Result<bool> {
let path_str = path.to_str().unwrap();
let f = File::open("/proc/mounts")?;
let reader = BufReader::new(f);
for line in reader.lines() {
if let Some(s) = line?.split_whitespace().next() {
if s == path_str {
return Ok(true);
}
}
}
Ok(false)
}
///
/// Converts a `Path` into `&str` representation, assuming
/// that it contains valid utf-8
///
pub fn path_str(path: &Path) -> &str {
path.to_str().unwrap()
}
pub fn rootfs_partition_paths() -> Result<Vec<PathBuf>> {
let mut rootfs_paths = Vec::new();
for dent in fs::read_dir("/dev/mapper")? {
let path = dent?.path();
if is_path_rootfs(&path) {
rootfs_paths.push(path);
}
}
Ok(rootfs_paths)
}
pub fn is_path_rootfs(path: &Path) -> bool {
path_filename(path).starts_with("citadel-rootfs")
}
fn path_filename(path: &Path) -> &str {
if let Some(osstr) = path.file_name() {
if let Some(name) = osstr.to_str() {
return name;
}
}
""
}
pub fn write_string_to_file(path: &Path, s: &str) -> Result<()> {
let mut f = File::create(path)?;
f.write_all(s.as_bytes())?;
Ok(())
}
pub fn read_file_as_string(path: &Path) -> Result<String> {
let mut f = File::open(path)?;
let mut buffer = String::new();
f.read_to_string(&mut buffer)?;
Ok(buffer)
}
pub fn run_file_command(path: &Path) -> Result<String> {
let path = path_str(path);
let output = try_run_command("/usr/bin/file", &["-b", path])?;
Ok(output)
}
pub fn run_xz_command(path: &Path, decompress: bool) -> Result<()> {
let path = path_str(path);
if decompress {
let _ = try_run_command("/usr/bin/xz", &["-d", path])?;
} else {
let _ = try_run_command("/usr/bin/xz", &["-T0", path])?;
}
Ok(())
}
pub fn run_sha256_command(path: &Path) -> Result<String> {
let path = path_str(path);
let output = try_run_command("/usr/bin/sha256sum", &[path])?;
let v: Vec<&str> = output.split_whitespace().collect();
Ok(v[0].trim().to_owned())
}
pub fn run_verityformat_command(srcfile: &Path, hashfile: &Path) -> Result<String> {
let srcfile = path_str(srcfile);
let hashfile = path_str(hashfile);
let output = try_run_command("/usr/sbin/veritysetup",
&["format", srcfile, hashfile])?;
Ok(output)
}
pub fn run_verityinstall_command(block_device: &Path, salt: &str, data_blocks: usize, hash_offset: usize) -> Result<String> {
let data_device = path_str(block_device).to_owned();
let hash_device = path_str(block_device).to_owned();
let arg1 = format!("--data-blocks={}", data_blocks);
let arg2 = format!("--hash-offset={}", hash_offset);
let arg3 = format!("--salt={}", salt);
let output = try_run_command("/usr/sbin/veritysetup", &[&arg1, &arg2, &arg3, "format", &data_device, &hash_device])?;
Ok(output)
}
pub fn run_write_image_dd(image_src: &Path, block_device: &Path) -> Result<()> {
let src = format!("if={}", path_str(image_src));
let dst = format!("of={}", path_str(block_device));
let _ = try_run_command("/bin/dd", &[&src, &dst, "bs=4M"])?;
Ok(())
}
fn try_run_command(cmd_path: &str, args: &[&str]) -> Result<String> {
let mut cmd = Command::new(cmd_path);
for arg in args {
cmd.arg(arg);
}
let result = cmd.output()?;
if !result.status.success() {
let err = String::from_utf8(result.stderr)?;
let argstr = args.join(" ");
bail!("{} {} command failed: {}", cmd_path, argstr, err);
}
let output = String::from_utf8(result.stdout)?;
Ok(output)
}