Bump sunset, sunset-sftp, sunset-sshwire-derive. Concat SSH Stamp ident string to sunset's

Cargo.toml

@@ -43,15 +43,15 @@ heapless = "0.9"
 esp-hal = { version = "1.1", features = ["unstable", "log-04"] }
 
 # SSH protocol
-sunset = { git = "https://github.com/mkj/sunset", rev = "fd3f8284ebca704f3c3789faf80487af18a50114", default-features = false, features = [
+sunset = { version = "0.5.0", default-features = false, features = [
     "openssh-key",
     "embedded-io",
 ] }
-sunset-async = { git = "https://github.com/mkj/sunset", rev = "fd3f8284ebca704f3c3789faf80487af18a50114", default-features = false, features = [
+sunset-async = { version = "0.5.0", default-features = false, features = [
     "multi-thread",
 ] }
-sunset-sshwire-derive = { git = "https://github.com/mkj/sunset", rev = "fd3f8284ebca704f3c3789faf80487af18a50114", default-features = false }
-sunset-sftp = { git = "https://github.com/mkj/sunset", rev = "fd3f8284ebca704f3c3789faf80487af18a50114", default-features = false }
+sunset-sshwire-derive = { version = "0.2.2", default-features = false }
+sunset-sftp = { version = "0.1.3", default-features = false }
 
 # Crypto
 sha2 = { version = "0.10", default-features = false }

build.rs

@@ -0,0 +1,28 @@
+// SPDX-FileCopyrightText: 2026 Roman Valls Guimera <brainstorm@nopcode.org>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+//! Concatenates the upstream `sunset` SSH ident with the `ssh-stamp`
+//! version, e.g. `SSH-2.0-Sunset-0.5.0-ssh-stamp-0.3.0`.
+
+fn main() {
+    println!("cargo:rerun-if-changed=Cargo.lock");
+    let lock_path = std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("Cargo.lock");
+    let lock = std::fs::read_to_string(&lock_path).unwrap();
+    let sunset_ver = lock
+        .split("[[package]]")
+        .find(|s| s.contains("name = \"sunset\""))
+        .and_then(|s| {
+            s.lines().find_map(|l| {
+                l.trim()
+                    .strip_prefix("version = ")
+                    .map(|v| v.trim_matches('"'))
+            })
+        })
+        .unwrap_or("unknown");
+    let ident = format!(
+        "SSH-2.0-Sunset-{sunset_ver}-ssh-stamp-{}",
+        env!("CARGO_PKG_VERSION")
+    );
+    println!("cargo::rustc-env=SSH_STAMP_IDENT={ident}");
+}

ota/src/sftpserver.rs

@@ -28,7 +28,6 @@ pub async fn run_ota_server<W: OtaActions>(
     stdio: ChanInOut<'_>,
     ota_writer: W,
 ) -> Result<(), sunset::Error> {
-    let mut buffer_in = [0u8; 512];
     let mut request_buffer = [0u8; MAX_REQUEST_LEN];
 
     let mut file_server = SftpOtaServer::new(ota_writer);
@@ -39,7 +38,7 @@ pub async fn run_ota_server<W: OtaActions>(
         &mut file_server,
         &mut request_buffer,
     )
-    .process_loop(chan_in, chan_out, &mut buffer_in)
+    .process_loop(chan_in, chan_out)
     .await
     {
         Ok(()) => {

src/app.rs

@@ -27,7 +27,7 @@ use crate::handle::{self, SessionType};
 use crate::platform::PlatformServices;
 use crate::serial::BufferedSerial;
 use crate::serve;
-use crate::settings::{UART_BUFFER_SIZE, WIFI_PASSWORD_CHARS};
+use crate::settings::{SSH_STAMP_IDENT, UART_BUFFER_SIZE, WIFI_PASSWORD_CHARS};
 
 /// Ensures a `WiFi` password exists, persists a freshly-generated one if not,
 /// prints the SSH hostkey fingerprint, and returns a ready-to-use
@@ -51,6 +51,8 @@ pub async fn prepare_ap_config<P: PlatformServices>(
 ) -> Result<WifiApConfigStatic, sunset::Error> {
     let mut guard = config.lock().await;
 
+    info!("SSH server ident: {SSH_STAMP_IDENT}");
+
     if guard.wifi_ap_pw.is_empty() {
         let pw = generate_wifi_password()?;
         warn!("wifi_pw missing from config, generated new password");

src/settings.rs

@@ -13,9 +13,10 @@ use core::net::Ipv4Addr;
 // SSH server settings
 //pub(crate) const MTU: usize = 1536;
 //pub(crate) const PORT: u16 = 22;
-//pub(crate) const SSH_SERVER_ID: &str = "SSH-2.0-ssh-stamp-0.1";
+pub(crate) const SSH_STAMP_IDENT: &str = env!("SSH_STAMP_IDENT");
 pub(crate) const KEY_SLOTS: usize = 1; // TODO: Document whether this a "reasonable default"? Justify why?
-pub const DEFAULT_IP: Ipv4Addr = Ipv4Addr::new(192, 168, 4, 1);
+pub const DEFAULT_IP: Ipv4Addr = Ipv4Addr::new(192, 168, 4, 1); // TODO: Expose this setting via
+// SSH_STAMP env var?
 
 // WiFi SSID and password character set (alphanumeric)
 pub(crate) const WIFI_PASSWORD_CHARS: &[u8; 62] =