From ba309bc25bb8ed640d6914635a6bcea8455fe6a9 Mon Sep 17 00:00:00 2001
From: "Masaki.Nakano" <admin@namachan10777.dev>
Date: Mon, 7 Oct 2024 01:48:51 +0900
Subject: [PATCH] first commit

---
 .cargo/config.toml            |    2 +
 .github/workflows/lint.yml    |   19 +
 .github/workflows/release.yml |   46 +
 .gitignore                    |   23 +-
 Cargo.lock                    | 1563 +++++++++++++++++++++++++++++++++
 Cargo.toml                    |   18 +
 example.config.toml           |    3 +
 src/main.rs                   |   93 ++
 8 files changed, 1746 insertions(+), 21 deletions(-)
 create mode 100644 .cargo/config.toml
 create mode 100644 .github/workflows/lint.yml
 create mode 100644 .github/workflows/release.yml
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 example.config.toml
 create mode 100644 src/main.rs

diff --git a/.cargo/config.toml b/.cargo/config.toml
new file mode 100644
index 0000000..a539230
--- /dev/null
+++ b/.cargo/config.toml
@@ -0,0 +1,2 @@
+[build]
+rustflags = ["--cfg", "tracing_unstable"]
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
new file mode 100644
index 0000000..55ee99d
--- /dev/null
+++ b/.github/workflows/lint.yml
@@ -0,0 +1,19 @@
+name: Lint
+
+on: [push, pull_request]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: stable
+          targets: ${{ matrix.arch.target }}
+      - uses: Swatinem/rust-cache@v2
+        with:
+          prefix: ${{ matrix.arch.name }}
+      - run: cargo clippy --target x86_64-unknown-linux-musl --all-targets -- -D warnings
+      - run: cargo fmt -- --check
+      - run: cargo test --target x86_64-unknown-linux-musl --all-features
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000..53c09e1
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,46 @@
+name: Release binary
+
+on:
+  push:
+    tags:
+      - "*"
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: stable
+          targets: x86_64-unknown-linux-musl
+      - uses: Swatinem/rust-cache@v2
+        with:
+          prefix: ${{ matrix.arch.name }}
+      - run: cargo build --release
+      - name: Create release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: Release ${{ github.ref }}
+          body: ""
+          draft: true
+          prerelease: false
+      - name: Upload release asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: target/release/ssh-key-sync
+          asset_name: ssh-key-sync
+          asset_content_type: application/octet-stream
+      - name: Publish release
+        uses: StuYarrow/publish-release@v1.1.2
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          id: ${{ steps.create_release.outputs.id }}
diff --git a/.gitignore b/.gitignore
index d01bd1a..d3c6a56 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,21 +1,2 @@
-# Generated by Cargo
-# will have compiled files and executables
-debug/
-target/
-
-# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
-# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
-Cargo.lock
-
-# These are backup files generated by rustfmt
-**/*.rs.bk
-
-# MSVC Windows builds of rustc generate these, which store debugging information
-*.pdb
-
-# RustRover
-#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
-#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
-#  and can be added to the global gitignore or merged into this file.  For a more nuclear
-#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
-#.idea/
\ No newline at end of file
+target
+authorized_keys
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..a14a6b7
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,1563 @@
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+# It is not intended for manual editing.
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+
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..a0f10d4
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,18 @@
+[package]
+name = "ssh-key-sync"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+anyhow = { version = "1.0.89", features = ["backtrace"] }
+clap = { version = "4.5.19", features = ["derive", "env"] }
+futures = { version = "0.3.31", default-features = false }
+futures-util = "0.3.31"
+humantime-serde = "1.1.1"
+reqwest = { version = "0.12.8", default-features = false, features = ["rustls-tls-webpki-roots"] }
+serde = { version = "1.0.210", features = ["derive"] }
+tokio = { version = "1.40.0", features = ["fs", "macros", "rt-multi-thread"] }
+toml = "0.8.19"
+tracing = { version = "0.1.40", features = ["valuable"] }
+tracing-subscriber = { version = "0.3.18", features = ["valuable", "env-filter"] }
+valuable = { version = "0.1.0", features = ["derive"] }
diff --git a/example.config.toml b/example.config.toml
new file mode 100644
index 0000000..7fee514
--- /dev/null
+++ b/example.config.toml
@@ -0,0 +1,3 @@
+authorized_keys_file = "authorized_keys"
+github_users = ["namachan10777"]
+sync_duration = "10s"
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..4c792d1
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,93 @@
+use std::{io, path::PathBuf};
+
+use anyhow::Context;
+use clap::Parser;
+use futures::future::try_join_all;
+use serde::Deserialize;
+use tokio::{
+    fs,
+    io::{AsyncSeekExt, AsyncWriteExt},
+    time::{sleep, Instant},
+};
+use tracing::{error, info};
+use valuable::Valuable;
+
+#[derive(Parser)]
+struct Opts {
+    #[clap(short, long, env, default_value = "/etc/ssh_key_sync/config.toml")]
+    config: PathBuf,
+}
+
+#[derive(Deserialize)]
+struct Config {
+    authorized_keys_file: PathBuf,
+    github_users: Vec<String>,
+    #[serde(with = "humantime_serde")]
+    sync_duration: std::time::Duration,
+}
+
+async fn run(opts: &Opts) -> anyhow::Result<()> {
+    let config = fs::read_to_string(&opts.config)
+        .await
+        .with_context(|| "read config file")?;
+    let config: Config = toml::from_str(&config).with_context(|| "parse config file")?;
+
+    let mut authorized_keys = fs::File::options()
+        .append(false)
+        .create(true)
+        .truncate(true)
+        .write(true)
+        .open(&config.authorized_keys_file)
+        .await
+        .with_context(|| "open authorized keys")?;
+    loop {
+        let instant = Instant::now();
+
+        info!(users = config.github_users.as_value(), "try sync");
+        let keys = config.github_users.iter().map(|user| async move {
+            let keys = reqwest::get(format!("https://github.com/{user}.keys"))
+                .await
+                .with_context(|| "get ssh keys")?
+                .text()
+                .await
+                .with_context(|| "decode got response")?;
+            Ok::<_, anyhow::Error>(format!("# {user}\n{keys}\n"))
+        });
+        let keys = try_join_all(keys).await?.join("\n");
+        authorized_keys
+            .seek(io::SeekFrom::Start(0))
+            .await
+            .with_context(|| "seek to start")?;
+        authorized_keys
+            .set_len(0)
+            .await
+            .with_context(|| "truncate authorized_keys")?;
+        authorized_keys
+            .write_all(keys.as_bytes())
+            .await
+            .with_context(|| "write authorized keys")?;
+        authorized_keys
+            .flush()
+            .await
+            .with_context(|| "flush authorized keys")?;
+
+        let elapsed = instant.elapsed();
+        if elapsed < config.sync_duration {
+            sleep(config.sync_duration - elapsed).await;
+        }
+    }
+}
+
+#[tokio::main]
+async fn main() {
+    let opts = Opts::parse();
+    use tracing_subscriber::{fmt, prelude::*, EnvFilter};
+    tracing_subscriber::registry()
+        .with(fmt::layer().with_ansi(false))
+        .with(EnvFilter::from_default_env())
+        .init();
+
+    if let Err(e) = run(&opts).await {
+        error!("{e}");
+    }
+}