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Code Issues Releases Wiki Activity

Structopt instead of docopt

This commit is contained in:
Dennis Schwerdel 2020-05-29 08:37:29 +02:00
parent 805c4055a0
commit 02ccea326e
9 changed files with 376 additions and 211 deletions
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1
CHANGELOG.md
View File

@ -9,6 +9,7 @@ This project follows [semantic versioning](http://semver.org).
- [changed] Warning for missing router is now info - [changed] Warning for missing router is now info
- [changed] New warning on claimed addresses in learning mode - [changed] New warning on claimed addresses in learning mode
- [changed] Updated dependencies - [changed] Updated dependencies
- [changed] Rewrote argument parsing
- [fixed] Fixed problem that could lead to 100% cpu consumption - [fixed] Fixed problem that could lead to 100% cpu consumption

232
Cargo.lock generated
View File

@ -1,11 +1,11 @@
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"checksum url 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "829d4a8476c35c9bf0bbce5a3b23f4106f79728039b726d292bb93bc106787cb" "checksum url 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "829d4a8476c35c9bf0bbce5a3b23f4106f79728039b726d292bb93bc106787cb"
"checksum vec_map 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
"checksum version_check 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)" = "b5a972e5669d67ba988ce3dc826706fb0a8b01471c088cb0b6110b805cc36aed" "checksum version_check 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)" = "b5a972e5669d67ba988ce3dc826706fb0a8b01471c088cb0b6110b805cc36aed"
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"checksum wasi 0.9.0+wasi-snapshot-preview1 (registry+https://github.com/rust-lang/crates.io-index)" = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519" "checksum wasi 0.9.0+wasi-snapshot-preview1 (registry+https://github.com/rust-lang/crates.io-index)" = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
"checksum wasm-bindgen 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)" = "e3c7d40d09cdbf0f4895ae58cf57d92e1e57a9dd8ed2e8390514b54a47cc5551" "checksum wasm-bindgen 0.2.63 (registry+https://github.com/rust-lang/crates.io-index)" = "4c2dc4aa152834bc334f506c1a06b866416a8b6697d5c9f75b9a689c8486def0"
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"checksum wasm-bindgen-shared 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)" = "a91c2916119c17a8e316507afaaa2dd94b47646048014bbdf6bef098c1bb58ad" "checksum wasm-bindgen-shared 0.2.63 (registry+https://github.com/rust-lang/crates.io-index)" = "c9ba19973a58daf4db6f352eda73dc0e289493cd29fb2632eb172085b6521acd"
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2
Cargo.toml
View File

@ -13,7 +13,7 @@ edition = "2018"
[dependencies] [dependencies]
time = "0.2" time = "0.2"
docopt = "^1" structopt = "0.3"
serde = "1.0" serde = "1.0"
serde_derive = "1.0" serde_derive = "1.0"
serde_yaml = "0.8" serde_yaml = "0.8"

98
src/config.rs
View File

@ -172,76 +172,76 @@ impl Config {
} }
pub fn merge_args(&mut self, mut args: Args) { pub fn merge_args(&mut self, mut args: Args) {
if let Some(val) = args.flag_type { if let Some(val) = args.type_ {
self.device_type = val; self.device_type = val;
} }
if let Some(val) = args.flag_device { if let Some(val) = args.device {
self.device_name = val; self.device_name = val;
} }
if let Some(val) = args.flag_device_path { if let Some(val) = args.device_path {
self.device_path = Some(val); self.device_path = Some(val);
} }
if let Some(val) = args.flag_ifup { if let Some(val) = args.ifup {
self.ifup = Some(val); self.ifup = Some(val);
} }
if let Some(val) = args.flag_ifdown { if let Some(val) = args.ifdown {
self.ifdown = Some(val); self.ifdown = Some(val);
} }
if let Some(val) = args.flag_crypto { if let Some(val) = args.crypto {
self.crypto = val; self.crypto = val;
} }
if let Some(val) = args.flag_shared_key { if let Some(val) = args.key {
self.shared_key = Some(val); self.shared_key = Some(val);
} }
if let Some(val) = args.flag_network_id { if let Some(val) = args.network_id {
warn!("The --network-id argument is deprecated, please use --magic instead."); warn!("The --network-id argument is deprecated, please use --magic instead.");
self.magic = Some(val); self.magic = Some(val);
} }
if let Some(val) = args.flag_magic { if let Some(val) = args.magic {
self.magic = Some(val); self.magic = Some(val);
} }
if let Some(val) = args.flag_listen { if let Some(val) = args.listen {
self.listen = parse_listen(&val); self.listen = parse_listen(&val);
} }
self.peers.append(&mut args.flag_connect); self.peers.append(&mut args.connect);
if let Some(val) = args.flag_peer_timeout { if let Some(val) = args.peer_timeout {
self.peer_timeout = val; self.peer_timeout = val;
} }
if let Some(val) = args.flag_keepalive { if let Some(val) = args.keepalive {
self.keepalive = Some(val); self.keepalive = Some(val);
} }
if let Some(val) = args.flag_beacon_store { if let Some(val) = args.beacon_store {
self.beacon_store = Some(val); self.beacon_store = Some(val);
} }
if let Some(val) = args.flag_beacon_load { if let Some(val) = args.beacon_load {
self.beacon_load = Some(val); self.beacon_load = Some(val);
} }
if let Some(val) = args.flag_beacon_interval { if let Some(val) = args.beacon_interval {
self.beacon_interval = val; self.beacon_interval = val;
} }
if let Some(val) = args.flag_mode { if let Some(val) = args.mode {
self.mode = val; self.mode = val;
} }
if let Some(val) = args.flag_dst_timeout { if let Some(val) = args.dst_timeout {
self.dst_timeout = val; self.dst_timeout = val;
} }
self.subnets.append(&mut args.flag_subnet); self.subnets.append(&mut args.subnets);
if args.flag_no_port_forwarding { if args.no_port_forwarding {
self.port_forwarding = false; self.port_forwarding = false;
} }
if args.flag_daemon { if args.daemon {
self.daemonize = true; self.daemonize = true;
} }
if let Some(val) = args.flag_pid_file { if let Some(val) = args.pid_file {
self.pid_file = Some(val); self.pid_file = Some(val);
} }
if let Some(val) = args.flag_stats_file { if let Some(val) = args.stats_file {
self.stats_file = Some(val); self.stats_file = Some(val);
} }
if let Some(val) = args.flag_user { if let Some(val) = args.user {
self.user = Some(val); self.user = Some(val);
} }
if let Some(val) = args.flag_group { if let Some(val) = args.group {
self.group = Some(val); self.group = Some(val);
} }
} }
@ -417,30 +417,30 @@ fn config_merge() {
..Default::default() ..Default::default()
}); });
config.merge_args(Args { config.merge_args(Args {
flag_type: Some(Type::Tap), type_: Some(Type::Tap),
flag_device: Some("vpncloud0".to_string()), device: Some("vpncloud0".to_string()),
flag_device_path: Some("/dev/null".to_string()), device_path: Some("/dev/null".to_string()),
flag_ifup: Some("ifconfig $IFNAME 10.0.1.2/16 mtu 1400 up".to_string()), ifup: Some("ifconfig $IFNAME 10.0.1.2/16 mtu 1400 up".to_string()),
flag_ifdown: Some("ifconfig $IFNAME down".to_string()), ifdown: Some("ifconfig $IFNAME down".to_string()),
flag_crypto: Some(CryptoMethod::ChaCha20), crypto: Some(CryptoMethod::ChaCha20),
flag_shared_key: Some("anothersecret".to_string()), key: Some("anothersecret".to_string()),
flag_magic: Some("hash:mynet".to_string()), magic: Some("hash:mynet".to_string()),
flag_listen: Some("3211".to_string()), listen: Some("3211".to_string()),
flag_peer_timeout: Some(1801), peer_timeout: Some(1801),
flag_keepalive: Some(850), keepalive: Some(850),
flag_dst_timeout: Some(301), dst_timeout: Some(301),
flag_beacon_store: Some("/run/vpncloud.beacon.out2".to_string()), beacon_store: Some("/run/vpncloud.beacon.out2".to_string()),
flag_beacon_load: Some("/run/vpncloud.beacon.in2".to_string()), beacon_load: Some("/run/vpncloud.beacon.in2".to_string()),
flag_beacon_interval: Some(3600), beacon_interval: Some(3600),
flag_mode: Some(Mode::Switch), mode: Some(Mode::Switch),
flag_subnet: vec![], subnets: vec![],
flag_connect: vec!["another:3210".to_string()], connect: vec!["another:3210".to_string()],
flag_no_port_forwarding: true, no_port_forwarding: true,
flag_daemon: true, daemon: true,
flag_pid_file: Some("/run/vpncloud-mynet.run".to_string()), pid_file: Some("/run/vpncloud-mynet.run".to_string()),
flag_stats_file: Some("/var/log/vpncloud-mynet.stats".to_string()), stats_file: Some("/var/log/vpncloud-mynet.stats".to_string()),
flag_user: Some("root".to_string()), user: Some("root".to_string()),
flag_group: Some("root".to_string()), group: Some("root".to_string()),
..Default::default() ..Default::default()
}); });
assert_eq!(config, Config { assert_eq!(config, Config {

13
src/crypto.rs
View File

@ -2,7 +2,7 @@
// Copyright (C) 2015-2020 Dennis Schwerdel // Copyright (C) 2015-2020 Dennis Schwerdel
// This software is licensed under GPL-3 or newer (see LICENSE.md) // This software is licensed under GPL-3 or newer (see LICENSE.md)
use std::num::NonZeroU32; use std::{num::NonZeroU32, str::FromStr};
use ring::{aead::*, pbkdf2, rand::*}; use ring::{aead::*, pbkdf2, rand::*};
@ -19,6 +19,17 @@ pub enum CryptoMethod {
#[serde(rename = "aes256")] #[serde(rename = "aes256")]
AES256 AES256
} }
impl FromStr for CryptoMethod {
type Err = &'static str;
fn from_str(text: &str) -> Result<Self, Self::Err> {
Ok(match &text.to_lowercase() as &str {
"chacha20" | "chacha" => Self::ChaCha20,
"aes256" | "aes" => Self::AES256,
_ => return Err("Unknown method")
})
}
}
pub struct CryptoData { pub struct CryptoData {
crypto_key: LessSafeKey, crypto_key: LessSafeKey,

17
src/device.rs
View File

@ -6,7 +6,8 @@ use std::{
collections::VecDeque, collections::VecDeque,
fmt, fs, fmt, fs,
io::{self, Error as IoError, ErrorKind, Read, Write}, io::{self, Error as IoError, ErrorKind, Read, Write},
os::unix::io::{AsRawFd, RawFd} os::unix::io::{AsRawFd, RawFd},
str::FromStr
}; };
use super::types::Error; use super::types::Error;
@ -23,7 +24,7 @@ pub enum Type {
/// Tun interface: This interface transports IP packets. /// Tun interface: This interface transports IP packets.
#[serde(rename = "tun")] #[serde(rename = "tun")]
Tun, Tun,
/// Tap interface: This insterface transports Ethernet frames. /// Tap interface: This interface transports Ethernet frames.
#[serde(rename = "tap")] #[serde(rename = "tap")]
Tap, Tap,
/// Dummy interface: This interface does nothing. /// Dummy interface: This interface does nothing.
@ -41,6 +42,18 @@ impl fmt::Display for Type {
} }
} }
impl FromStr for Type {
type Err = &'static str;
fn from_str(text: &str) -> Result<Self, Self::Err> {
Ok(match &text.to_lowercase() as &str {
"tun" => Self::Tun,
"tap" => Self::Tap,
"dummy" => Self::Dummy,
_ => return Err("Unknown device type")
})
}
}
pub trait Device: AsRawFd { pub trait Device: AsRawFd {
/// Returns the type of this device /// Returns the type of this device

168
src/main.rs
View File

@ -30,7 +30,7 @@ pub mod traffic;
pub mod types; pub mod types;
pub mod udpmessage; pub mod udpmessage;
use docopt::Docopt; use structopt::StructOpt;
use std::{ use std::{
fs::{self, File, Permissions}, fs::{self, File, Permissions},
@ -59,41 +59,127 @@ use crate::{
const VERSION: u8 = 1; const VERSION: u8 = 1;
const MAGIC: HeaderMagic = *b"vpn\x01"; const MAGIC: HeaderMagic = *b"vpn\x01";
static USAGE: &str = include_str!("usage.txt");
#[derive(StructOpt, Debug, Default)]
#[derive(Deserialize, Debug, Default)]
pub struct Args { pub struct Args {
flag_config: Option<String>, /// Read configuration options from the specified file.
flag_type: Option<Type>, #[structopt(long)]
flag_device_path: Option<String>, config: Option<String>,
flag_mode: Option<Mode>,
flag_shared_key: Option<String>, /// Set the type of network ("tap" or "tun")
flag_crypto: Option<CryptoMethod>, #[structopt(name = "type", short, long)]
flag_subnet: Vec<String>, type_: Option<Type>,
flag_device: Option<String>,
flag_listen: Option<String>, /// Set the path of the base device
flag_network_id: Option<String>, #[structopt(long)]
flag_magic: Option<String>, device_path: Option<String>,
flag_connect: Vec<String>,
flag_peer_timeout: Option<Duration>, /// The mode of the VPN ("normal", "router", "switch", or "hub")
flag_keepalive: Option<Duration>, #[structopt(short, long)]
flag_dst_timeout: Option<Duration>, mode: Option<Mode>,
flag_beacon_store: Option<String>,
flag_beacon_load: Option<String>, /// The shared key to encrypt all traffic
flag_beacon_interval: Option<Duration>, #[structopt(short, long, aliases=&["shared-key", "secret-key", "secret"])]
flag_verbose: bool, key: Option<String>,
flag_quiet: bool,
flag_ifup: Option<String>, /// The encryption method to use ("aes256", or "chacha20")
flag_ifdown: Option<String>, #[structopt(long)]
flag_version: bool, crypto: Option<CryptoMethod>,
flag_no_port_forwarding: bool,
flag_daemon: bool, /// The local subnets to use
flag_pid_file: Option<String>, #[structopt(short, long)]
flag_stats_file: Option<String>, subnets: Vec<String>,
flag_user: Option<String>,
flag_group: Option<String>, /// Name of the virtual device
flag_log_file: Option<String> #[structopt(short, long)]
device: Option<String>,
/// The port number (or ip:port) on which to listen for data
#[structopt(short, long)]
listen: Option<String>,
/// Optional token that identifies the network. (DEPRECATED)
#[structopt(long)]
network_id: Option<String>,
/// Override the 4-byte magic header of each packet
#[structopt(long)]
magic: Option<String>,
/// Address of a peer to connect to
#[structopt(short, long)]
connect: Vec<String>,
/// Peer timeout in seconds
#[structopt(long)]
peer_timeout: Option<Duration>,
/// Periodically send message to keep connections alive
#[structopt(long)]
keepalive: Option<Duration>,
/// Switch table entry timeout in seconds
#[structopt(long)]
dst_timeout: Option<Duration>,
/// The file path or |command to store the beacon
#[structopt(long)]
beacon_store: Option<String>,
/// The file path or |command to load the beacon
#[structopt(long)]
beacon_load: Option<String>,
/// Beacon store/load interval in seconds
#[structopt(long)]
beacon_interval: Option<Duration>,
/// Print debug information
#[structopt(short, long, conflicts_with = "quiet")]
verbose: bool,
/// Only print errors and warnings
#[structopt(short, long)]
quiet: bool,
/// A command to setup the network interface
#[structopt(long)]
ifup: Option<String>,
/// A command to bring down the network interface
#[structopt(long)]
ifdown: Option<String>,
/// Print the version and exit
#[structopt(long)]
version: bool,
/// Disable automatic port forwarding
#[structopt(long)]
no_port_forwarding: bool,
/// Run the process in the background
#[structopt(long)]
daemon: bool,
/// Store the process id in this file when daemonizing
#[structopt(long)]
pid_file: Option<String>,
/// Print statistics to this file
#[structopt(long)]
stats_file: Option<String>,
/// Run as other user
#[structopt(long)]
user: Option<String>,
/// Run as other group
#[structopt(long)]
group: Option<String>,
/// Print logs also to this file
#[structopt(long)]
log_file: Option<String>
} }
struct DualLogger { struct DualLogger {
@ -326,23 +412,23 @@ fn run<P: Protocol>(config: Config) {
} }
fn main() { fn main() {
let args: Args = Docopt::new(USAGE).and_then(|d| d.deserialize()).unwrap_or_else(|e| e.exit()); let args: Args = Args::from_args();
if args.flag_version { if args.version {
println!("VpnCloud v{}, protocol version {}", env!("CARGO_PKG_VERSION"), VERSION); println!("VpnCloud v{}, protocol version {}", env!("CARGO_PKG_VERSION"), VERSION);
return return
} }
let logger = try_fail!(DualLogger::new(args.flag_log_file.as_ref()), "Failed to open logfile: {}"); let logger = try_fail!(DualLogger::new(args.log_file.as_ref()), "Failed to open logfile: {}");
log::set_boxed_logger(Box::new(logger)).unwrap(); log::set_boxed_logger(Box::new(logger)).unwrap();
assert!(!args.flag_verbose || !args.flag_quiet); assert!(!args.verbose || !args.quiet);
log::set_max_level(if args.flag_verbose { log::set_max_level(if args.verbose {
log::LevelFilter::Debug log::LevelFilter::Debug
} else if args.flag_quiet { } else if args.quiet {
log::LevelFilter::Error log::LevelFilter::Error
} else { } else {
log::LevelFilter::Info log::LevelFilter::Info
}); });
let mut config = Config::default(); let mut config = Config::default();
if let Some(ref file) = args.flag_config { if let Some(ref file) = args.config {
info!("Reading config file '{}'", file); info!("Reading config file '{}'", file);
let f = try_fail!(File::open(file), "Failed to open config file: {:?}"); let f = try_fail!(File::open(file), "Failed to open config file: {:?}");
let config_file = try_fail!(serde_yaml::from_reader(f), "Failed to load config file: {:?}"); let config_file = try_fail!(serde_yaml::from_reader(f), "Failed to load config file: {:?}");

13
src/types.rs
View File

@ -206,6 +206,19 @@ impl fmt::Display for Mode {
} }
} }
} }
impl FromStr for Mode {
type Err = &'static str;
fn from_str(text: &str) -> Result<Self, Self::Err> {
Ok(match &text.to_lowercase() as &str {
"normal" => Self::Normal,
"hub" => Self::Hub,
"switch" => Self::Switch,
"router" => Self::Router,
_ => return Err("Unknown mode")
})
}
}
pub trait Table { pub trait Table {
fn learn(&mut self, _: Address, _: Option<u8>, _: SocketAddr); fn learn(&mut self, _: Address, _: Option<u8>, _: SocketAddr);

43
src/usage.txt
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@ -1,43 +0,0 @@
Usage:
vpncloud [options] [--config <file>] [-t <type>] [-d <name>] [-l <port>] [-c <addr>...] [-s <subnet>...]
Options:
--config <file> Read configuration options from the
specified file.
-t <type>, --type <type> Set the type of network ("tap" or "tun").
--device-path <path> Set the path of the base device.
-d <name>, --device <name> Name of the virtual device.
-m <mode>, --mode <mode> The mode of the VPN ("hub", "switch",
"router", or "normal").
-l <port>, --listen <port> The port number on which to listen for data.
-c <addr>, --connect <addr> Address of a peer to connect to.
-s <subnet>, --subnet <subnet> The local subnets to use.
--magic <hex> Override the 4-byte magic header of each
packet.
--network-id <id> Optional token that identifies the network.
(DEPRECATED)
--shared-key <key> The shared key to encrypt all traffic.
--crypto <method> The encryption method to use ("aes256", or
"chacha20").
--peer-timeout <secs> Peer timeout in seconds.
--keepalive <secs> Periodically send message to keep
connections alive.
--dst-timeout <secs> Switch table entry timeout in seconds.
--beacon-store <path|command> The file or command to store the beacon.
--beacon-load <path|command> The file or command to load the beacon.
--beacon-interval <secs> Beacon store/load interval in seconds.
--ifup <command> A command to setup the network interface.
--ifdown <command> A command to bring down the network
interface.
--pid-file <file> Store the process id in this file when
daemonizing.
--user <user> Run as other user.
--group <group> Run as other group.
--log-file <file> Print logs also to this file.
--stats-file <file> Print statistics to this file.
--no-port-forwarding Disable automatic port forward.
--daemon Run the process in the background.
-v, --verbose Print debug information.
-q, --quiet Only print errors and warnings.
-h, --help Display the help.
-V, --version Print the version and exit.