keyforkd: let server be runnable by other programs

keyforkd/src/lib.rs

@@ -0,0 +1,70 @@
+use std::{collections::HashMap, path::PathBuf};
+
+use keyfork_mnemonic_util::Mnemonic;
+use tower::ServiceBuilder;
+
+#[cfg(feature = "tracing")]
+use tracing::debug;
+
+mod error;
+mod middleware;
+mod server;
+mod service;
+use error::KeyforkdError;
+use server::UnixServer;
+use service::Keyforkd;
+
+pub async fn start_and_run_server(mnemonic: Mnemonic) -> Result<(), Box<dyn std::error::Error>> {
+    let service = ServiceBuilder::new()
+        .layer(middleware::SerdeLayer::new())
+        .service(Keyforkd::new(mnemonic));
+
+    let runtime_vars = std::env::vars()
+        .filter(|(key, _)| ["XDG_RUNTIME_DIR", "KEYFORKD_SOCKET_PATH"].contains(&key.as_str()))
+        .collect::<HashMap<String, String>>();
+    let mut runtime_path: PathBuf;
+    #[allow(clippy::single_match_else)]
+    match runtime_vars.get("KEYFORKD_SOCKET_PATH") {
+        Some(occupied) => {
+            runtime_path = PathBuf::from(occupied);
+        }
+        None => {
+            runtime_path = PathBuf::from(
+                runtime_vars
+                    .get("XDG_RUNTIME_DIR")
+                    .ok_or(KeyforkdError::NoSocketPath)?,
+            );
+            runtime_path.push("keyforkd");
+            #[cfg(feature = "tracing")]
+            debug!("ensuring directory exists: {}", runtime_path.display());
+            if !runtime_path.is_dir() {
+                tokio::fs::create_dir(&runtime_path).await?;
+            }
+            runtime_path.push("keyforkd.sock");
+        }
+    }
+
+    #[cfg(feature = "tracing")]
+    debug!(
+        "binding UNIX socket in runtime dir: {}",
+        runtime_path.display()
+    );
+
+    let mut server = match UnixServer::bind(&runtime_path) {
+        Ok(s) => s,
+        Err(e) => {
+            #[cfg(feature = "tracing")]
+            debug!(%e, "Encountered error attempting to bind socket: {}", runtime_path.display());
+            return Err(e.into());
+        }
+    };
+    match server.run(service).await {
+        Ok(_) => (),
+        Err(e) => {
+            #[cfg(feature = "tracing")]
+            debug!(%e, "Encountered error while running");
+        }
+    }
+
+    Ok(())
+}

keyforkd/src/main.rs

@@ -1,9 +1,6 @@
-use std::{collections::HashMap, path::PathBuf};
-
 use keyfork_mnemonic_util::Mnemonic;
 
 use tokio::io::{self, AsyncBufReadExt, BufReader};
-use tower::ServiceBuilder;
 
 #[cfg(feature = "tracing")]
 use tracing::debug;
@@ -15,14 +12,6 @@ use tracing_subscriber::{
     registry,
 };
 
-mod error;
-mod server;
-mod service;
-mod middleware;
-use error::KeyforkdError;
-use server::UnixServer;
-use service::Keyforkd;
-
 type Result<T, E = Box<dyn std::error::Error>> = std::result::Result<T, E>;
 
 async fn load_mnemonic() -> Result<Mnemonic> {
@@ -54,55 +43,5 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     debug!("reading mnemonic from standard input");
     let mnemonic = load_mnemonic().await?;
 
-    let service = ServiceBuilder::new()
+    keyforkd::start_and_run_server(mnemonic).await
-        .layer(middleware::SerdeLayer::new())
-        .service(Keyforkd::new(mnemonic));
-
-    let runtime_vars = std::env::vars()
-        .filter(|(key, _)| ["XDG_RUNTIME_DIR", "KEYFORKD_SOCKET_PATH"].contains(&key.as_str()))
-        .collect::<HashMap<String, String>>();
-    let mut runtime_path: PathBuf;
-    #[allow(clippy::single_match_else)]
-    match runtime_vars.get("KEYFORKD_SOCKET_PATH") {
-        Some(occupied) => {
-            runtime_path = PathBuf::from(occupied);
-        }
-        None => {
-            runtime_path = PathBuf::from(
-                runtime_vars
-                    .get("XDG_RUNTIME_DIR")
-                    .ok_or(KeyforkdError::NoSocketPath)?,
-            );
-            runtime_path.push("keyforkd");
-            #[cfg(feature = "tracing")]
-            debug!("ensuring directory exists: {}", runtime_path.display());
-            if !runtime_path.is_dir() {
-                tokio::fs::create_dir(&runtime_path).await?;
-            }
-            runtime_path.push("keyforkd.sock");
-        }
-    }
-
-    #[cfg(feature = "tracing")]
-    debug!(
-        "binding UNIX socket in runtime dir: {}",
-        runtime_path.display()
-    );
-
-    let mut server = match UnixServer::bind(&runtime_path) {
-        Ok(s) => s,
-        Err(e) => {
-            #[cfg(feature = "tracing")]
-            debug!(%e, "Encountered error attempting to bind socket: {}", runtime_path.display());
-            return Err(e.into());
-        }
-    };
-    match server.run(service).await {
-        Ok(_) => (),
-        Err(e) => {
-            #[cfg(feature = "tracing")]
-            debug!(%e, "Encountered error while running");
-        }
-    }
-    Ok(())
 }