Refactor in prep for clip

Cargo.toml

@@ -22,7 +22,7 @@ indoc = "1"
 log = { version = "0.4", features = ["std"] }
 open = "3"
 thiserror = "1.0"
-tokio = { version = "1", features = ["io-std", "io-util", "macros", "net", "process", "rt", "rt-multi-thread"] }
+tokio = { version = "1", features = ["io-std", "io-util", "macros", "net", "process", "rt", "rt-multi-thread", "fs"] }
 tokio-stream = "0.1"
 toml = "0.5"
 tui = "0.19"

src/bin/fwd-browse.rs

@@ -9,5 +9,10 @@ async fn main() {
         std::process::exit(1);
     }
 
-    fwd::browse_url(&args[1]).await;
+    let url = &args[1];
+    if let Err(e) = fwd::browse_url(url).await {
+        eprintln!("Unable to open {url}");
+        eprintln!("{}", e);
+        std::process::exit(1);
+    }
 }

src/browse/mod.rs

@@ -1,40 +0,0 @@
-use crate::message::Message;
-use anyhow::Result;
-use tokio::sync::mpsc;
-
-#[cfg(target_family = "unix")]
-mod browse_unix;
-
-#[cfg(target_family = "unix")]
-use browse_unix::{browse_url_impl, handle_browser_open_impl};
-
-#[inline]
-pub async fn browse_url(url: &String) {
-    if let Err(e) = browse_url_impl(url).await {
-        eprintln!("Unable to open {url}");
-        eprintln!("{}", e);
-        std::process::exit(1);
-    }
-}
-
-#[cfg(not(target_family = "unix"))]
-pub async fn browse_url_impl(_url: &String) -> Result<()> {
-    use anyhow::anyhow;
-    Err(anyhow!(
-        "Opening a browser is not supported on this platform"
-    ))
-}
-
-#[inline]
-pub async fn handle_browser_open(
-    messages: mpsc::Sender<Message>,
-) -> Result<()> {
-    handle_browser_open_impl(messages).await
-}
-
-#[cfg(not(target_family = "unix"))]
-async fn handle_browser_open_impl(
-    _messages: mpsc::Sender<Message>,
-) -> Result<()> {
-    std::future::pending().await
-}

src/lib.rs

@@ -1,8 +1,8 @@
-mod browse;
 mod client;
 mod message;
+mod reverse;
 mod server;
 
-pub use browse::browse_url;
 pub use client::run_client;
+pub use reverse::browse_url;
 pub use server::run_server;

src/main.rs

@@ -5,7 +5,7 @@ const VERSION: &str = env!("CARGO_PKG_VERSION");
 
 fn usage() {
     println!(indoc! {"
-usage: fwd [options] (<server> | browse <url>)
+usage: fwd [options] (<server> | browse <url> | clip [<file>])
 
 To connect a client to a server that has an `fwd` installed in its path, run
 `fwd <server>` on the client, where <server> is the name of the server to
@@ -60,9 +60,13 @@ fn parse_args(args: Vec<String>) -> Args {
         } else {
             Args::Error
         }
-    } else if rest.len() > 1 && rest[0] == "browse" {
+    } else if rest.len() > 1 {
-        if rest.len() == 2 {
+        if rest[0] == "browse" {
-            Args::Browse(rest[1].to_string())
+            if rest.len() == 2 {
+                Args::Browse(rest[1].to_string())
+            } else {
+                Args::Error
+            }
         } else {
             Args::Error
         }
@@ -73,6 +77,14 @@ fn parse_args(args: Vec<String>) -> Args {
     }
 }
 
+async fn browse_url(url: &str) {
+    if let Err(e) = fwd::browse_url(&url).await {
+        eprintln!("Unable to open {url}");
+        eprintln!("{}", e);
+        std::process::exit(1);
+    }
+}
+
 #[tokio::main]
 async fn main() {
     match parse_args(std::env::args().collect()) {
@@ -86,7 +98,7 @@ async fn main() {
             fwd::run_server().await;
         }
         Args::Browse(url) => {
-            fwd::browse_url(&url).await;
+            browse_url(&url).await;
         }
         Args::Client(server, sudo) => {
             fwd::run_client(&server, sudo).await;

src/reverse.rs

@@ -0,0 +1,29 @@
+use anyhow::Result;
+
+#[cfg(target_family = "unix")]
+mod unix;
+
+#[cfg(target_family = "unix")]
+pub use unix::{handle_reverse_connections, send_reverse_message};
+
+use crate::message::Message;
+
+#[cfg(not(target_family = "unix"))]
+pub async fn send_reverse_message(_message: Message) -> Result<()> {
+    use anyhow::anyhow;
+    Err(anyhow!(
+        "Server-side operations are not supported on this platform"
+    ))
+}
+
+#[cfg(not(target_family = "unix"))]
+pub async fn handle_reverse_connections(
+    _messages: mpsc::Sender<Message>,
+) -> Result<()> {
+    std::future::pending().await
+}
+
+#[inline]
+pub async fn browse_url(url: &str) -> Result<()> {
+    send_reverse_message(Message::Browse(url.to_string())).await
+}

src/reverse/unix.rs

@@ -1,14 +1,15 @@
-use crate::message::{Message, MessageReader, MessageWriter};
+// The reverse client connects to the server via a local connection to send
+// commands back to the client.
 use anyhow::{bail, Context, Result};
 use log::warn;
 use std::os::unix::fs::DirBuilderExt;
 use std::path::PathBuf;
 use tokio::net::{UnixListener, UnixStream};
 use tokio::sync::mpsc;
-use users;
-use xdg;
 
-pub async fn browse_url_impl(url: &String) -> Result<()> {
+use crate::message::{Message, MessageReader, MessageWriter};
+
+pub async fn send_reverse_message(message: Message) -> Result<()> {
     let path = socket_path().context("Error getting socket path")?;
     let stream = match UnixStream::connect(&path).await {
         Ok(s) => s,
@@ -18,38 +19,22 @@ pub async fn browse_url_impl(url: &String) -> Result<()> {
     };
     let mut writer = MessageWriter::new(stream);
     writer
-        .write(Message::Browse(url.clone()))
+        .write(message)
         .await
         .context("Error sending browse message")?;
     Ok(())
 }
 
-pub async fn handle_browser_open_impl(
+fn socket_directory() -> Result<std::path::PathBuf> {
-    messages: mpsc::Sender<Message>,
+    let base_directories = xdg::BaseDirectories::new()
-) -> Result<()> {
+        .context("Error creating BaseDirectories")?;
-    let path = socket_path().context("Error getting socket path")?;
+    match base_directories.place_runtime_file("fwd") {
-    handle_browser_open_with_path(messages, path).await
+        Ok(path) => Ok(path),
-}
+        Err(_) => {
-
+            let mut path = std::env::temp_dir();
-async fn handle_browser_open_with_path(
+            path.push(format!("fwd{}", users::get_current_uid()));
-    messages: mpsc::Sender<Message>,
+            Ok(path)
-    path: PathBuf,
+        }
-) -> Result<()> {
-    let _ = std::fs::remove_file(&path);
-    let listener = UnixListener::bind(&path)
-        .with_context(|| format!("Failed to bind to {}", path.display()))?;
-    loop {
-        let (socket, _addr) = listener
-            .accept()
-            .await
-            .context("Error accepting connection")?;
-
-        let sender = messages.clone();
-        tokio::spawn(async move {
-            if let Err(e) = handle_connection(socket, sender).await {
-                warn!("Error handling socket connection: {:?}", e);
-            }
-        });
     }
 }
 
@@ -68,16 +53,32 @@ pub fn socket_path() -> Result<PathBuf> {
     Ok(socket_path)
 }
 
-fn socket_directory() -> Result<std::path::PathBuf> {
+pub async fn handle_reverse_connections(
-    let base_directories = xdg::BaseDirectories::new()
+    messages: mpsc::Sender<Message>,
-        .context("Error creating BaseDirectories")?;
+) -> Result<()> {
-    match base_directories.place_runtime_file("fwd") {
+    let path = socket_path().context("Error getting socket path")?;
-        Ok(path) => Ok(path),
+    handle_reverse_connections_with_path(messages, path).await
-        Err(_) => {
+}
-            let mut path = std::env::temp_dir();
+
-            path.push(format!("fwd{}", users::get_current_uid()));
+async fn handle_reverse_connections_with_path(
-            Ok(path)
+    messages: mpsc::Sender<Message>,
-        }
+    path: PathBuf,
+) -> Result<()> {
+    let _ = std::fs::remove_file(&path);
+    let listener = UnixListener::bind(&path)
+        .with_context(|| format!("Failed to bind to {}", path.display()))?;
+    loop {
+        let (socket, _addr) = listener
+            .accept()
+            .await
+            .context("Error accepting connection")?;
+
+        let sender = messages.clone();
+        tokio::spawn(async move {
+            if let Err(e) = handle_connection(socket, sender).await {
+                warn!("Error handling socket connection: {:?}", e);
+            }
+        });
     }
 }
 
@@ -119,7 +120,7 @@ mod tests {
 
         let path_override = path.clone();
         tokio::spawn(async move {
-            handle_browser_open_with_path(sender, path_override)
+            handle_reverse_connections_with_path(sender, path_override)
                 .await
                 .expect("Error in server!");
         });

src/server/mod.rs

@@ -1,5 +1,5 @@
-use crate::browse::handle_browser_open;
 use crate::message::{Message, MessageReader, MessageWriter};
+use crate::reverse::handle_reverse_connections;
 use anyhow::Result;
 use log::{error, warn};
 use tokio::io::{AsyncRead, AsyncWrite, AsyncWriteExt, BufReader, BufWriter};
@@ -13,7 +13,7 @@ mod refresh;
 async fn write_driver<Writer: AsyncWrite + Unpin>(
     messages: &mut mpsc::Receiver<Message>,
     writer: &mut MessageWriter<Writer>,
-) -> () {
+) {
     while let Some(m) = messages.recv().await {
         writer.write(m).await.expect("Failed to write the message")
     }
@@ -77,7 +77,7 @@ async fn server_main<
     tokio::select! {
         _ = write_driver(&mut receiver, &mut writer) => Ok(()),
         r = server_loop(&mut reader, &mut sender) => r,
-        r = handle_browser_open(browse_sender) => r,
+        r = handle_reverse_connections(browse_sender) => r,
     }
 }