rewrite using tokio-xmpp

Cargo.toml

@@ -10,12 +10,16 @@ keywords    = ["xmpp"]
 license = "GPL-3.0+"
 readme = "README.md"
 
+edition = "2018"
+
 [dependencies]
-#xmpp = { git = "https://gitlab.com/lumi/xmpp-rs.git" }
-xmpp = { path = "xmpp-rs", version = "0.2.0" }
-#xmpp = "0.2.0"
-toml = "0.4.4"
-serde_derive = "1.0.11"
-serde = "1.0.11"
-gumdrop = "0.3.0"
-gumdrop_derive = "0.3.0"
+toml = "0.4.10"
+serde_derive = "1.0.85"
+serde = "1.0.85"
+gumdrop = "0.5.0"
+gumdrop_derive = "0.5.0"
+dirs = "1.0.4"
+tokio-xmpp = "0.2.3"
+futures = "0.1"
+tokio = "0.1"
+xmpp-parsers = "0.12.2"

src/main.rs

@@ -1,25 +1,19 @@
-#[macro_use]
-extern crate serde_derive;
-extern crate toml;
-extern crate gumdrop;
-#[macro_use]
-extern crate gumdrop_derive;
-extern crate xmpp;
-
-use xmpp::jid::Jid;
-use xmpp::client::ClientBuilder;
-use xmpp::plugins::messaging::MessagingPlugin;
-
-use std::time::Duration;
-use std::thread;
-use std::env;
-use std::iter::Iterator;
-use std::io::{Read, stdin};
-use std::fs::File;
-use std::path::Path;
-
 use std::env::args;
+use std::fs::File;
+use std::io::{stdin, Read};
+use std::iter::Iterator;
+use std::path::Path;
+use std::thread;
+use std::time::Duration;
+
 use gumdrop::Options;
+use serde_derive::Deserialize;
+
+use futures::{future, Sink, Stream};
+use tokio::runtime::current_thread::Runtime;
+use tokio_xmpp::Client;
+use xmpp_parsers::message::{Body, Message};
+use xmpp_parsers::{Element, Jid};
 
 #[derive(Deserialize)]
 struct Config {
@@ -34,12 +28,12 @@ fn parse_cfg<P: AsRef<Path>>(path: P) -> Option<Config> {
             match f.read_to_string(&mut input) {
                 Ok(_) => match toml::from_str(&input) {
                     Ok(toml) => Some(toml),
-                    Err(_) => None
+                    Err(_) => None,
                 },
-                Err(_) => None
+                Err(_) => None,
             }
         }
-        Err(_) => None
+        Err(_) => None,
     }
 }
 
@@ -51,7 +45,9 @@ struct MyOptions {
     #[options(help = "show this help message and exit")]
     help: bool,
 
-    #[options(help = "path to config file. default: ~/.config/sendxmpp.toml with fallback to /etc/sendxmpp/sendxmpp.toml")]
+    #[options(
+        help = "path to config file. default: ~/.config/sendxmpp.toml with fallback to /etc/sendxmpp/sendxmpp.toml"
+    )]
     config: Option<String>,
 
     #[options(help = "Force OpenPGP encryption for all recipients", short = "e")]
@@ -83,33 +79,77 @@ fn main() {
         return;
     }
 
-    let recipients: Vec<Jid> = opts.recipients.iter().map(|s| s.parse::<Jid>().expect("invalid recipient jid")).collect();
+    let recipients: Vec<Jid> = opts
+        .recipients
+        .iter()
+        .map(|s| s.parse::<Jid>().expect("invalid recipient jid"))
+        .collect();
+    let recipients = &recipients;
 
     let cfg = match opts.config {
         Some(config) => parse_cfg(&config).expect("provided config cannot be found/parsed"),
-        None => parse_cfg(env::home_dir().expect("cannot find home directory").join(".config/sendxmpp.toml"))
-            .or_else(|| parse_cfg("/etc/sendxmpp/sendxmpp.toml")).expect("valid config file not found")
+        None => parse_cfg(
+            dirs::config_dir()
+                .expect("cannot find home directory")
+                .join("sendxmpp.toml"),
+        )
+        .or_else(|| parse_cfg("/etc/sendxmpp/sendxmpp.toml"))
+        .expect("valid config file not found"),
     };
 
-    let jid: Jid = cfg.jid.parse().expect("invalid jid in config file");
-
     let mut data = String::new();
-    stdin().read_to_string(&mut data).expect("error reading from stdin");
+    stdin()
+        .read_to_string(&mut data)
+        .expect("error reading from stdin");
+    let data = data.trim();
 
-    let mut client = ClientBuilder::new(jid)
-        .password(cfg.password)
-        .connect()
-        .expect("client cannot connect");
+    // tokio_core context
+    let mut rt = Runtime::new().unwrap();
+    // Client instance
+    let client = Client::new(&cfg.jid, &cfg.password).expect("could not connect to xmpp server");
 
-    client.register_plugin(MessagingPlugin::new());
+    // Make the two interfaces for sending and receiving independent
+    // of each other so we can move one into a closure.
+    let (mut sink, stream) = client.split();
+    // Wrap sink in Option so that we can take() it for the send(self)
+    // to consume and return it back when ready.
+    let mut send = move |stanza| {
+        sink.start_send(stanza).expect("start_send");
+    };
+    // Main loop, processes events
+    let done = stream.for_each(|event| {
+        if event.is_online() {
+            for recipient in recipients {
+                let reply = make_reply(recipient.clone(), &data);
+                send(reply);
+            }
+        }
 
-    for recipient in recipients {
-        client.plugin::<MessagingPlugin>().send_message(&recipient, &data).expect("error sending message");
-    }
+        Box::new(future::ok(()))
+    });
 
     thread::spawn(|| {
         thread::sleep(Duration::from_millis(4000));
         std::process::exit(0);
     });
-    client.main().expect("error during client main")
+
+    // Start polling `done`
+    match rt.block_on(done) {
+        Ok(_) => {
+            println!("successful exiting");
+            std::process::exit(0);
+            //()
+        }
+        Err(e) => {
+            println!("Fatal: {}", e);
+            ()
+        }
+    };
+}
+
+// Construct a chat <message/>
+fn make_reply(to: Jid, body: &str) -> Element {
+    let mut message = Message::new(Some(to));
+    message.bodies.insert(String::new(), Body(body.to_owned()));
+    message.into()
 }