From a16f187a7264a55dc7fd28223760229f0b807a94 Mon Sep 17 00:00:00 2001
From: Astro <astro@spaceboyz.net>
Date: Mon, 19 Sep 2022 22:26:20 +0200
Subject: [PATCH] seems to work

---
 Cargo.lock  | 1386 +++++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml  |   16 +
 src/main.rs |  129 +++++
 3 files changed, 1531 insertions(+)
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 src/main.rs

diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..f115074
--- /dev/null
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+
+[[package]]
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+ "cfg-if",
+ "wasm-bindgen-macro",
+]
+
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+ "bumpalo",
+ "log",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
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+ "quote",
+ "wasm-bindgen-macro-support",
+]
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+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
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+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
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+ "winapi",
+]
+
+[[package]]
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+dependencies = [
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
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+
+[[package]]
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+[[package]]
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+checksum = "e262a29d0e61ccf2b6190d7050d4b237535fc76ce4c1210d9caa316f71dffa75"
+dependencies = [
+ "bit-vec",
+ "num-bigint",
+]
+
+[[package]]
+name = "zeroize"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4756f7db3f7b5574938c3eb1c117038b8e07f95ee6718c0efad4ac21508f1efd"
+dependencies = [
+ "zeroize_derive",
+]
+
+[[package]]
+name = "zeroize_derive"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f8f187641dad4f680d25c4bfc4225b418165984179f26ca76ec4fb6441d3a17"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..a939a10
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "logsshd"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+futures = "*"
+tokio = "*"
+russh = "0.34.0-beta.16"
+russh-keys = "0.22.0-beta.6"
+log = "*"
+env_logger = "*"
+anyhow = "*"
+chrono = "0.4"
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..906e516
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,129 @@
+use std::fs::{OpenOptions, File, create_dir_all};
+use std::io::Write;
+use std::path::Path;
+use std::pin::Pin;
+use std::str::FromStr;
+use std::sync::Arc;
+
+use chrono::Utc;
+use futures::FutureExt;
+use russh::server::{Auth, Session};
+use russh::*;
+
+#[tokio::main]
+async fn main() {
+    env_logger::builder()
+        .filter_level(log::LevelFilter::Info)
+        .init();
+
+    let mut config = russh::server::Config::default();
+    config.connection_timeout = Some(std::time::Duration::from_secs(10000));
+    config.auth_rejection_time = std::time::Duration::from_secs(1);
+    config.keys.push(russh_keys::key::KeyPair::generate_ed25519().unwrap());
+    let config = Arc::new(config);
+    let sh = Server;
+    russh::server::run(
+        config,
+        &std::net::SocketAddr::from_str("0.0.0.0:65022").unwrap(),
+        sh,
+    )
+    .await
+    .unwrap();
+}
+
+struct Server;
+
+impl server::Server for Server {
+    type Handler = Handler;
+    fn new_client(&mut self, addr: Option<std::net::SocketAddr>) -> Handler {
+        let addr = if let Some(addr) = addr {
+            format!("{}", addr)
+        } else {
+            format!("unknown")
+        };
+        println!("Connection from {}", addr);
+
+        let path = &format!(
+            "{}-{}.txt",
+            Utc::now().format("%Y-%m-%d/%H:%M:%S"),
+            addr
+        );
+        let path = Path::new(path);
+        create_dir_all(path.parent().unwrap()).unwrap();
+        let file = OpenOptions::new()
+            .create(true)
+            .append(true)
+            .open(path)
+            .unwrap();
+        Handler {
+            file,
+            user: "root".into(),
+        }
+    }
+}
+
+fn send_str(session: &mut Session, channel: ChannelId, s: String) {
+    let data = CryptoVec::from(s);
+    session.data(channel, data);
+}
+
+struct Handler {
+    file: File,
+    user: String,
+}
+
+impl Handler {
+    fn send_prompt(&self, session: &mut Session, channel: ChannelId) {
+        send_str(session, channel, format!("{}@fnordister:~$ ", self.user));
+    }
+}
+
+impl server::Handler for Handler {
+    type Error = anyhow::Error;
+    type FutureAuth =
+        Pin<Box<dyn core::future::Future<Output = anyhow::Result<(Self, Auth)>> + Send>>;
+    type FutureUnit =
+        Pin<Box<dyn core::future::Future<Output = anyhow::Result<(Self, Session)>> + Send>>;
+    type FutureBool =
+        Pin<Box<dyn core::future::Future<Output = anyhow::Result<(Self, Session, bool)>> + Send>>;
+
+    fn finished_auth(self, auth: Auth) -> Self::FutureAuth {
+        async { Ok((self, auth)) }.boxed()
+    }
+
+    fn finished_bool(self, b: bool, s: Session) -> Self::FutureBool {
+        async move { Ok((self, s, b)) }.boxed()
+    }
+
+    fn finished(self, s: Session) -> Self::FutureUnit {
+        async { Ok((self, s)) }.boxed()
+    }
+
+    fn shell_request(self, channel: ChannelId, mut session: Session) -> Self::FutureUnit {
+        send_str(&mut session, channel, format!("#\r\n# DEMONSTRATION SYSTEM\r\n#\r\n# All input will be published\r\n#\r\n\r\n"));
+        self.send_prompt(&mut session, channel);
+
+        self.finished(session)
+    }
+
+    fn auth_password(mut self, user: &str, password: &str) -> Self::FutureAuth {
+        writeln!(self.file, "Authenticaed as {} with {}\n", user, password)
+            .unwrap();
+        self.user = user.into();
+        self.finished_auth(server::Auth::Accept)
+    }
+
+    fn data(mut self, channel: ChannelId, data: &[u8], mut session: Session) -> Self::FutureUnit {
+        self.file.write(data)
+            .unwrap();
+        // echo input back
+        session.data(channel, data.to_vec().into());
+        // pressed return?
+        if data.contains(&b'\r') {
+            writeln!(self.file).unwrap();
+            session.data(channel, b"\n".to_vec().into());
+            self.send_prompt(&mut session, channel);
+        }
+        self.finished(session)
+    }
+}