From b506943607a4864450836db70810b945595ce6c6 Mon Sep 17 00:00:00 2001 From: Chip Senkbeil Date: Sun, 25 Jul 2021 21:02:51 -0500 Subject: [PATCH] Initial commit --- .cargo/config | 2 + .gitignore | 1 + BUILDING.md | 19 + Cargo.lock | 892 +++++++++++++++++++++++++++++++++++++++ Cargo.toml | 28 ++ src/lib.rs | 14 + src/main.rs | 7 + src/opt.rs | 76 ++++ src/subcommand/launch.rs | 34 ++ src/subcommand/mod.rs | 1 + 10 files changed, 1074 insertions(+) create mode 100644 .cargo/config create mode 100644 .gitignore create mode 100644 BUILDING.md create mode 100644 Cargo.lock create mode 100644 Cargo.toml create mode 100644 src/lib.rs create mode 100644 src/main.rs create mode 100644 src/opt.rs create mode 100644 src/subcommand/launch.rs create mode 100644 src/subcommand/mod.rs diff --git a/.cargo/config b/.cargo/config new file mode 100644 index 0000000..7d7cf07 --- /dev/null +++ b/.cargo/config @@ -0,0 +1,2 @@ +[target.x86_64-unknown-linux-musl] +linker = "x86_64-linux-musl-gcc" diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..ea8c4bf --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +/target diff --git a/BUILDING.md b/BUILDING.md new file mode 100644 index 0000000..1cb4186 --- /dev/null +++ b/BUILDING.md @@ -0,0 +1,19 @@ +# Building from Source + +## Using Cargo + +```bash +cargo build +``` + +## Completely static binary + +To compile a completely static binary (not linked to libc), we need to target +musl using: + +```bash +cargo build --target x86_64-unknown-linux-musl +``` + +At the moment, this is not possible to build on M1 Macs: +https://github.com/FiloSottile/homebrew-musl-cross/issues/23 diff --git a/Cargo.lock b/Cargo.lock new file mode 100644 index 0000000..ffa638d --- /dev/null +++ b/Cargo.lock @@ -0,0 +1,892 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +version = 3 + +[[package]] +name = "ansi_term" +version = "0.11.0" +source = "registry+https://github.com/rust-lang/crates.io-index" 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+whoami = "1.1.2" diff --git a/src/lib.rs b/src/lib.rs new file mode 100644 index 0000000..d1b1c0d --- /dev/null +++ b/src/lib.rs @@ -0,0 +1,14 @@ +mod opt; +mod subcommand; + +pub use opt::Opt; + +pub fn init_logging(opt: &opt::CommonOpt) { + stderrlog::new() + .module("distant") + .quiet(opt.quiet) + .verbosity(opt.verbose as usize) + .timestamp(stderrlog::Timestamp::Off) + .init() + .unwrap(); +} diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..c0a985a --- /dev/null +++ b/src/main.rs @@ -0,0 +1,7 @@ +use distant::Opt; + +fn main() { + let opt = Opt::load(); + distant::init_logging(&opt.common); + println!("Hello, world!"); +} diff --git a/src/opt.rs b/src/opt.rs new file mode 100644 index 0000000..326062a --- /dev/null +++ b/src/opt.rs @@ -0,0 +1,76 @@ +use lazy_static::lazy_static; +use std::{net::SocketAddr, path::PathBuf}; +use structopt::StructOpt; + +lazy_static! { + static ref USERNAME: String = whoami::username(); +} + +/// Options and commands to apply to binary +#[derive(Debug, StructOpt)] +#[structopt(name = "distant")] +pub struct Opt { + #[structopt(flatten)] + pub common: CommonOpt, + + #[structopt(subcommand)] + pub subcommand: Subcommand, +} + +impl Opt { + /// Loads options from CLI arguments + pub fn load() -> Self { + Self::from_args() + } +} + +/// Contains options that are common across subcommands +#[derive(Debug, StructOpt)] +pub struct CommonOpt { + /// Verbose mode (-v, -vv, -vvv, etc.) + #[structopt(short, long, parse(from_occurrences), global = true)] + pub verbose: u8, + + /// Quiet mode + #[structopt(short, long, global = true)] + pub quiet: bool, +} + +#[derive(Debug, StructOpt)] +pub enum Subcommand { + #[structopt(visible_aliases = &["conn", "c"])] + Connect(ConnectSubcommand), + #[structopt(visible_aliases = &["exec", "x"])] + Execute(ExecuteSubcommand), + Launch(LaunchSubcommand), + #[structopt(visible_aliases = &["l"])] + Listen(ListenSubcommand), +} + +/// Represents subcommand to connect to an already-running remote server +#[derive(Debug, StructOpt)] +pub struct ConnectSubcommand {} + +/// Represents subcommand to execute some operation remotely +#[derive(Debug, StructOpt)] +pub struct ExecuteSubcommand {} + +/// Represents subcommand to launch a remote server +#[derive(Debug, StructOpt)] +pub struct LaunchSubcommand { + /// Username to use when sshing into remote machine + #[structopt(short, long, default_value = &USERNAME)] + pub username: String, + + /// Explicit identity file to use with ssh + #[structopt(short, long)] + pub identity_file: Option, + + /// Destination of remote machine to launch binary + #[structopt(name = "DESTINATION")] + pub destination: SocketAddr, +} + +/// Represents subcommand to operate in listen mode for incoming requests +#[derive(Debug, StructOpt)] +pub struct ListenSubcommand {} diff --git a/src/subcommand/launch.rs b/src/subcommand/launch.rs new file mode 100644 index 0000000..8c9664a --- /dev/null +++ b/src/subcommand/launch.rs @@ -0,0 +1,34 @@ +use crate::opt::{CommonOpt, LaunchSubcommand}; +use derive_more::{Display, Error, From}; +use std::string::FromUtf8Error; +use tokio::{io, process::Command}; + +pub type Result = std::result::Result<(), Error>; + +#[derive(Debug, Display, Error, From)] +pub enum Error { + IoError(io::Error), + Utf8Error(FromUtf8Error), +} + +pub async fn run(cmd: LaunchSubcommand, opt: CommonOpt) -> Result { + let remote_command = r#"distant listen --print-port"#; + let ssh_command = format!( + "ssh -o StrictHostKeyChecking=no ssh://{}@{} {} {}", + cmd.username, + cmd.destination, + cmd.identity_file + .map(|f| format!("-i {}", f.as_path().display())) + .unwrap_or_default(), + remote_command, + ); + let out = Command::new("sh") + .arg("-c") + .arg(ssh_command) + .output() + .await?; + let out = String::from_utf8(out.stdout)?.trim().to_string(); + println!("{}", out); + + Ok(()) +} diff --git a/src/subcommand/mod.rs b/src/subcommand/mod.rs new file mode 100644 index 0000000..d779117 --- /dev/null +++ b/src/subcommand/mod.rs @@ -0,0 +1 @@ +pub mod launch;