diff --git a/.hgignore b/.hgignore index 1bcd964b09..69c6b76b68 100644 --- a/.hgignore +++ b/.hgignore @@ -25,6 +25,7 @@ syntax: regexp ^go/trains/.*/start.sh$ ^go/trains/.*/lukegb-trains.json$ ^py/icalfilter/config/.*$ +^rust/.*/target/.*$ ^(.+/)?result(-([a-z]+|[0-9]+))?$ syntax: glob diff --git a/ci-root.nix b/ci-root.nix index 5b066be226..90252ff842 100644 --- a/ci-root.nix +++ b/ci-root.nix @@ -38,6 +38,7 @@ let }; factorio = depot.ops.factorio; home-manager = depot.ops.home-manager-ext.built; + rust = depot.rust; }; aarch64-linux = builtins.removeAttrs x86_64-linux [ "home-manager" "pkg-authentik" "web-barf" ] // { pkgs = builtins.removeAttrs x86_64-linux.pkgs [ "lutris" "plex-pass" "sheepshaver" "fr24feed" "javaws-env" "copybara" ]; diff --git a/default.nix b/default.nix index 2ca200c435..5479dd277e 100644 --- a/default.nix +++ b/default.nix @@ -22,6 +22,7 @@ in fix (self: web = import ./web ch; go = import ./go ch; py = import ./py ch; + rust = import ./rust ch; version = 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"589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec" + +[[package]] +name = "zeroize" +version = "1.8.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "ced3678a2879b30306d323f4542626697a464a97c0a07c9aebf7ebca65cd4dde" diff --git a/rust/matrix2mqtt/Cargo.toml b/rust/matrix2mqtt/Cargo.toml new file mode 100644 index 0000000000..2843f422de --- /dev/null +++ b/rust/matrix2mqtt/Cargo.toml @@ -0,0 +1,9 @@ +[package] +name = "matrix2mqtt" +version = "0.1.0" +edition = "2021" + +[dependencies] +tokio = { version = "1", features = ["full"] } +rumqttc = "0.24.0" +futures = "0.3.31" \ No newline at end of file diff --git a/rust/matrix2mqtt/default.nix b/rust/matrix2mqtt/default.nix new file mode 100644 index 0000000000..d3a51db6c5 --- /dev/null +++ b/rust/matrix2mqtt/default.nix @@ -0,0 +1,7 @@ +# SPDX-FileCopyrightText: 2024 Luke Granger-Brown +# +# SPDX-License-Identifier: Apache-2.0 + +{ depot, ... }: + +depot.pkgs.callPackage ./package.nix { } diff --git a/rust/matrix2mqtt/package.nix b/rust/matrix2mqtt/package.nix new file mode 100644 index 0000000000..5daecc9101 --- /dev/null +++ b/rust/matrix2mqtt/package.nix @@ -0,0 +1,21 @@ +# SPDX-FileCopyrightText: 2024 Luke Granger-Brown +# +# SPDX-License-Identifier: Apache-2.0 + +{ lib, rustPlatform }: + +rustPlatform.buildRustPackage rec { + pname = "matrix2mqtt"; + version = "unstable"; + + src = lib.fileset.toSource { + root = ./.; + fileset = lib.fileset.unions [ + ./Cargo.toml + ./Cargo.lock + ./src + ]; + }; + + cargoHash = "sha256-0R6hN5cNlj8+UzZ9oM4f74UGGCS1AKlDgHaQyKq/y0Q="; +} diff --git a/rust/matrix2mqtt/src/main.rs b/rust/matrix2mqtt/src/main.rs new file mode 100644 index 0000000000..1b69bee7d7 --- /dev/null +++ b/rust/matrix2mqtt/src/main.rs @@ -0,0 +1,506 @@ +use futures::future; +use futures::FutureExt; +use std::error::Error; +use std::fmt; +use std::str::FromStr; +use std::time::Duration; +use tokio::io::AsyncBufReadExt; +use tokio::io::AsyncRead; +use tokio::io::AsyncWriteExt; +use tokio::io::BufReader; +use tokio::net::TcpStream; +use tokio::select; +use tokio::sync::broadcast; +use tokio::sync::mpsc; +use tokio::task::JoinSet; + +async fn wait_for_line( + reader: &mut BufReader, + want: &str, +) -> Result<(), Box> { + loop { + let mut line = String::new(); + reader.read_line(&mut line).await?; + if line == want { + return Ok(()); + } + continue; + } +} + +#[derive(Debug)] +enum MatrixCommand { + GetCurrentMappings, + SetOutput(MatrixDestination, MatrixSource), + SetOutputCEC(MatrixDestination, bool), +} + +#[derive(Clone, Debug, PartialEq, Eq)] +enum MatrixSource { + HDMI1, + HDMI2, + HDMI3, + HDMI4, +} + +impl MatrixSource { + fn matrix_name(self: &MatrixSource) -> &'static str { + match self { + MatrixSource::HDMI1 => "hdmiin1", + MatrixSource::HDMI2 => "hdmiin2", + MatrixSource::HDMI3 => "hdmiin3", + MatrixSource::HDMI4 => "hdmiin4", + } + } + + fn friendly_name(self: &MatrixSource) -> &'static str { + match self { + MatrixSource::HDMI1 => "SHIELD", + MatrixSource::HDMI2 => "totoro", + MatrixSource::HDMI3 => "PS5", + MatrixSource::HDMI4 => "Mac Mini", + } + } +} + +#[derive(Debug, PartialEq, Eq)] +struct ParseMatrixPortError; + +impl fmt::Display for ParseMatrixPortError { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + write!(f, "ParseMatrixPortError") + } +} + +impl Error for ParseMatrixPortError {} + +#[derive(Debug, PartialEq, Eq)] +struct UnexpectedMatrixDestinationError; + +impl fmt::Display for UnexpectedMatrixDestinationError { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + write!(f, "UnexpectedMatrixDestinationError") + } +} + +impl Error for UnexpectedMatrixDestinationError {} + +impl FromStr for MatrixSource { + type Err = ParseMatrixPortError; + + fn from_str(s: &str) -> Result { + match s { + "hdmiin1" => Ok(MatrixSource::HDMI1), + "hdmiin2" => Ok(MatrixSource::HDMI2), + "hdmiin3" => Ok(MatrixSource::HDMI3), + "hdmiin4" => Ok(MatrixSource::HDMI4), + _ => Err(ParseMatrixPortError), + } + } +} + +#[derive(Clone, Debug, PartialEq, Eq)] +enum MatrixDestination { + HDMI1, + HDMI2, + HDMI3, + HDMI4, +} + +impl MatrixDestination { + fn matrix_name(self: &MatrixDestination) -> &'static str { + match self { + MatrixDestination::HDMI1 => "hdmiout1", + MatrixDestination::HDMI2 => "hdmiout2", + MatrixDestination::HDMI3 => "hdmiout3", + MatrixDestination::HDMI4 => "hdmiout4", + } + } + + fn index(self: &MatrixDestination) -> u8 { + match self { + MatrixDestination::HDMI1 => 1, + MatrixDestination::HDMI2 => 2, + MatrixDestination::HDMI3 => 3, + MatrixDestination::HDMI4 => 4, + } + } + + fn friendly_name(self: &MatrixDestination) -> &'static str { + match self { + MatrixDestination::HDMI1 => "Projector", + MatrixDestination::HDMI2 => "Sound Bar", + MatrixDestination::HDMI3 => "Desk Monitor", + MatrixDestination::HDMI4 => "unused", + } + } +} + +impl FromStr for MatrixDestination { + type Err = ParseMatrixPortError; + + fn from_str(s: &str) -> Result { + match s { + "hdmiout1" => Ok(MatrixDestination::HDMI1), + "hdmiout2" => Ok(MatrixDestination::HDMI2), + "hdmiout3" => Ok(MatrixDestination::HDMI3), + "hdmiout4" => Ok(MatrixDestination::HDMI4), + _ => Err(ParseMatrixPortError), + } + } +} + +#[derive(Clone, Debug)] +struct MatrixMappings { + hdmiout1: MatrixSource, + hdmiout2: MatrixSource, + hdmiout3: MatrixSource, + hdmiout4: MatrixSource, +} + +#[derive(Clone, Debug)] +enum MatrixResponse { + CurrentMappings(MatrixMappings), +} + +async fn read_single_mapping( + reader: &mut BufReader, + expected: MatrixDestination, +) -> Result> { + let mut line = String::new(); + reader.read_line(&mut line).await?; + let splitter = line + .strip_prefix("MP ") + .and_then(|s| Some(s.split_whitespace())) + .ok_or(ParseMatrixPortError)? + .collect::>(); + if splitter.len() != 2 { + return Err(Box::new(ParseMatrixPortError)); + } + + let src = MatrixSource::from_str(splitter[0])?; + let dst = MatrixDestination::from_str(splitter[1])?; + if dst != expected { + return Err(Box::new(UnexpectedMatrixDestinationError)); + } + + Ok(src) +} + +async fn query_mappings( + reader: &mut BufReader, + response_tx: &mut broadcast::Sender, +) -> Result<(), Box> { + reader.write_all(b"GET MP ALL\r\n").await?; + + let mappings = MatrixMappings { + hdmiout1: read_single_mapping(reader, MatrixDestination::HDMI1).await?, + hdmiout2: read_single_mapping(reader, MatrixDestination::HDMI2).await?, + hdmiout3: read_single_mapping(reader, MatrixDestination::HDMI3).await?, + hdmiout4: read_single_mapping(reader, MatrixDestination::HDMI4).await?, + }; + response_tx.send(MatrixResponse::CurrentMappings(mappings))?; + + Ok(()) +} + +async fn handle_matrix_telnet( + socket: TcpStream, + command_rx: &mut mpsc::Receiver, + response_tx: &mut broadcast::Sender, +) -> Result<(), Box> { + let mut stream = BufReader::new(socket); + + // Wait for the hello. + println!("awaiting hello"); + wait_for_line(&mut stream, "Welcome to the 4KMX44-H2 Matrix!\r\n").await?; + println!("matrix ready!"); + + while let Some(msg) = command_rx.recv().await { + println!("got command {:#?}", msg); + match msg { + MatrixCommand::GetCurrentMappings => { + query_mappings(&mut stream, response_tx).await?; + } + MatrixCommand::SetOutput(destination, source) => { + stream + .write_all( + format!( + "SET SW {} {}\r\n", + source.matrix_name(), + destination.matrix_name() + ) + .as_bytes(), + ) + .await?; + let expect = format!( + "SW {} {}\r\n", + source.matrix_name(), + destination.matrix_name() + ); + wait_for_line(&mut stream, &expect).await?; + query_mappings(&mut stream, response_tx).await?; + } + MatrixCommand::SetOutputCEC(destination, on_or_off) => { + let on_or_off_str = if on_or_off { "ON" } else { "OFF" }; + stream + .write_all( + format!( + "SET CEC_PWR {} {}\r\n", + destination.matrix_name(), + on_or_off_str, + ) + .as_bytes(), + ) + .await?; + let expect = format!( + "CEC_PWR {} {}\r\n", + destination.matrix_name(), + on_or_off_str, + ); + wait_for_line(&mut stream, &expect).await?; + } + } + } + + println!("process terminating..."); + + Ok(()) +} + +const TOPIC_PREFIX: &str = "matrix2mqtt/lukes-bedroom"; + +async fn handle_publish( + p: &rumqttc::Publish, + matrix_command_tx: &mut mpsc::Sender, +) -> Result<(), Box> { + if let Some(destination_str) = p + .topic + .strip_prefix(TOPIC_PREFIX) + .and_then(|topic| topic.strip_prefix("/")) + .and_then(|topic| topic.strip_suffix("/cec/set")) + { + let destination = MatrixDestination::from_str(destination_str)?; + match std::str::from_utf8(&p.payload)? { + "ON" => { + println!("asked to turn {:#?} on", destination); + matrix_command_tx + .send(MatrixCommand::SetOutputCEC(destination, true)) + .await?; + }, + "OFF" => { + println!("asked to turn {:#?} off", destination); + matrix_command_tx + .send(MatrixCommand::SetOutputCEC(destination, false)) + .await?; + }, + s => { + println!("asked to set {:#?} to unknown value {}", destination, s) + }, + } + } else if let Some(destination_str) = p + .topic + .strip_prefix(TOPIC_PREFIX) + .and_then(|topic| topic.strip_prefix("/")) + .and_then(|topic| topic.strip_suffix("/set")) + { + let destination = MatrixDestination::from_str(destination_str)?; + let source_str = std::str::from_utf8(&p.payload)?; + let source = MatrixSource::from_str(source_str)?; + println!("asked to set {:#?} to {:#?}", destination, source); + matrix_command_tx + .send(MatrixCommand::SetOutput(destination, source)) + .await?; + } + Ok(()) +} + +async fn publish_config( + client: &rumqttc::AsyncClient, + destination: MatrixDestination, +) -> Result<(), Box> { + client + .publish( + format!( + "homeassistant/select/matrix_{}/config", + destination.matrix_name() + ), + rumqttc::QoS::AtLeastOnce, + true, + format!( + r#"{{ + "name": "HDMI {index}: {friendly_name}", + "device": {{ + "identifiers": ["192.168.1.200"], + "name": "HDMI Matrix" + }}, + "device_class": "select", + "state_topic": "{topic_prefix}/{matrix_name}/get", + "command_topic": "{topic_prefix}/{matrix_name}/set", + "icon": "mdi:hdmi-port", + "entity_category": "config", + "unique_id": "{topic_prefix}/{matrix_name}", + "retain": false, + "options": [ + "{option1_friendly}", + "{option2_friendly}", + "{option3_friendly}", + "{option4_friendly}" + ], + "value_template": "{{% set lookup = {{'hdmiin1': '{option1_friendly}', 'hdmiin2': '{option2_friendly}', 'hdmiin3': '{option3_friendly}', 'hdmiin4': '{option4_friendly}'}} %}}{{{{ lookup[value] }}}}", + "command_template": "{{% set lookup = {{'{option1_friendly}': 'hdmiin1', '{option2_friendly}': 'hdmiin2', '{option3_friendly}': 'hdmiin3', '{option4_friendly}': 'hdmiin4'}} %}}{{{{ lookup[value] }}}}" +}}"#, + index = destination.index(), + friendly_name = destination.friendly_name(), + topic_prefix = TOPIC_PREFIX, + matrix_name = destination.matrix_name(), + option1_friendly = MatrixSource::HDMI1.friendly_name(), + option2_friendly = MatrixSource::HDMI2.friendly_name(), + option3_friendly = MatrixSource::HDMI3.friendly_name(), + option4_friendly = MatrixSource::HDMI4.friendly_name(), + ) + .as_bytes(), + ) + .await?; + + client + .publish( + format!( + "homeassistant/switch/matrix_{}_cec/config", + destination.matrix_name() + ), + rumqttc::QoS::AtLeastOnce, + true, + format!( + r#"{{ + "name": "HDMI {index}: {friendly_name} - CEC Power", + "device": {{ + "identifiers": ["192.168.1.200"], + "name": "HDMI Matrix" + }}, + "device_class": "switch", + "command_topic": "{topic_prefix}/{matrix_name}/cec/set", + "state_topic": "{topic_prefix}/{matrix_name}/cec/get", + "unique_id": "{topic_prefix}/{matrix_name}/cec", + "retain": false +}}"#, + index = destination.index(), + friendly_name = destination.friendly_name(), + topic_prefix = TOPIC_PREFIX, + matrix_name = destination.matrix_name(), + ) + .as_bytes(), + ) + .await?; + Ok(()) +} + +async fn select_all(futures: Vec) -> Result<(), E> +where + I: futures::Future> + Unpin, +{ + let mut fvec = futures; + while fvec.len() > 0 { + let (item_resolved, _, remaining_futures) = future::select_all(fvec).await; + item_resolved?; + fvec = remaining_futures; + } + Ok(()) +} + +#[tokio::main] +async fn main() -> Result<(), Box> { + let mut set = JoinSet::new(); + + let (matrix_command_tx, mut matrix_command_rx) = mpsc::channel(32); + let (mut matrix_response_tx, mut matrix_response_rx) = broadcast::channel(32); + + let mut mqtt_matrix_command_tx = matrix_command_tx.clone(); + set.spawn(async move { + let mut mqttoptions = rumqttc::MqttOptions::new("matrix2mqtt", "localhost", 1883); + mqttoptions.set_keep_alive(Duration::from_secs(5)); + mqttoptions.set_credentials("matrix2mqtt", "matrix2mqtt"); + + let (client, mut connection) = rumqttc::AsyncClient::new(mqttoptions, 10); + + select_all(vec![ + client.subscribe(format!("{}/+/set", TOPIC_PREFIX), rumqttc::QoS::AtLeastOnce).boxed(), + client.subscribe(format!("{}/+/cec/set", TOPIC_PREFIX), rumqttc::QoS::AtLeastOnce).boxed(), + ]).await?; + + // Publish Home Assistant discovery messages. + println!("publishing Home Assistant discovery messages"); + select_all(vec![ + publish_config(&client, MatrixDestination::HDMI1).boxed(), + publish_config(&client, MatrixDestination::HDMI2).boxed(), + publish_config(&client, MatrixDestination::HDMI3).boxed(), + publish_config(&client, MatrixDestination::HDMI4).boxed(), + ]).await?; + println!("done with HA startup!"); + + loop { + select! { + notification = connection.poll() => { + match notification? { + rumqttc::Event::Incoming(rumqttc::Incoming::Publish(p)) => { + match handle_publish(&p, &mut mqtt_matrix_command_tx).await { + Ok(_) => {}, + Err(e) => println!("failed to handle event {:#?}: {}", p, e), + } + }, + _ => {}, + } + }, + Ok(matrix_response) = matrix_response_rx.recv() => { + match matrix_response { + MatrixResponse::CurrentMappings(mappings) => { + println!("publishing mappings {:#?} to MQTT", mappings); + select_all(vec![ + client.publish(format!("{}/hdmiout1/get", TOPIC_PREFIX), rumqttc::QoS::AtLeastOnce, true, mappings.hdmiout1.matrix_name()).boxed(), + client.publish(format!("{}/hdmiout2/get", TOPIC_PREFIX), rumqttc::QoS::AtLeastOnce, true, mappings.hdmiout2.matrix_name()).boxed(), + client.publish(format!("{}/hdmiout3/get", TOPIC_PREFIX), rumqttc::QoS::AtLeastOnce, true, mappings.hdmiout3.matrix_name()).boxed(), + client.publish(format!("{}/hdmiout4/get", TOPIC_PREFIX), rumqttc::QoS::AtLeastOnce, true, mappings.hdmiout4.matrix_name()).boxed(), + ]).await?; + println!("published mappings to MQTT"); + }, + } + }, + } + } + }); + + set.spawn(async move { + let matrix_socket = TcpStream::connect("192.168.1.200:23").await?; + handle_matrix_telnet( + matrix_socket, + &mut matrix_command_rx, + &mut matrix_response_tx, + ) + .await + }); + + let ticker_matrix_command_tx = matrix_command_tx.clone(); + set.spawn(async move { + let mut interval = tokio::time::interval(Duration::from_secs(10)); + + loop { + interval.tick().await; + ticker_matrix_command_tx + .send(MatrixCommand::GetCurrentMappings) + .await?; + } + }); + + // Seed MQTT with the current mapping state. + matrix_command_tx + .send(MatrixCommand::GetCurrentMappings) + .await + .unwrap(); + + // Bail as soon as we get a failure. + while let Some(result) = set.join_next().await { + let _ = result?; + } + + Ok(()) +}