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/dev/null +++ b/Cargo.toml @@ -0,0 +1,9 @@ +[package] +name = "solid-xmpp-alarm" +version = "0.1.0" +edition = "2021" + +[dependencies] +axum = "0.6.1" +serde_json = "1.0.91" +tokio = { version = "1.23.0", features = ["full"] } diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..5c4c72e --- /dev/null +++ b/src/main.rs @@ -0,0 +1,251 @@ +use axum::{ + extract::{Json, State}, + http::StatusCode, + response::{IntoResponse, Response}, + routing::post, + Router, +}; + +use std::net::SocketAddr; +use std::str::FromStr; + +#[derive(Clone)] +struct AppState { + listen: String, + receiver: String, + jid: String, + password: String, +} + +impl AppState{ + pub fn new() -> Self { + Self { + listen: String::from("[::]:9199"), + receiver: String::from(""), + jid: String::from(""), + password: String::from(""), + } + } + + pub fn is_valid(self) -> bool { + let mut valid = true; + if self.receiver == String::from("") { + println!("--receiver is not specified"); + valid = false; + } + if self.jid == String::from("") { + println!("--jid is not specified"); + valid = false; + } + if self.password == String::from("") { + println!("password is not specified, can't be empty"); + valid = false; + } + + return valid; + } +} + +#[tokio::main] +async fn main() { + let mut app_state = AppState::new(); + + let mut password_file = String::from(""); + + let mut args = std::env::args(); + let name = args.next().unwrap(); + loop { + let arg = if let Some(arg) = args.next() { + arg + } else { + break; + }; + + match arg.as_str() { + "--help" | "-h" => { + println!("Alertmanager webhook receiver for xmpp clients"); + println!("Use --listen to bind the web service."); + println!(""); + println!("--receiver Who to send messaged to"); + println!("--jid Who to send from"); + println!("--password-file Path to file with the password for the sender account"); + std::process::exit(0); + } + "--listen" => { + app_state.listen = args.next().unwrap(); + } + "--receiver" => { + app_state.receiver = args.next().unwrap(); + } + "--jid" => { + app_state.jid = args.next().unwrap(); + } + "--password-file" => { + password_file = args.next().unwrap(); + } + unknown => { + println!("unknown option: {}", unknown); + std::process::exit(1) + } + } + } + + if password_file == String::from("") { + println!("--password-file not specified"); + } else { + app_state.password = std::fs::read_to_string(password_file).unwrap().trim().to_string(); + } + + if !app_state.clone().is_valid() { + println!("Invalid config"); + std::process::exit(1); + } + + let mut app = Router::new(); + app = app.route("/alert", post(alert)); + + let app = app.with_state(app_state.clone()); + + let addr = SocketAddr::from_str(&app_state.listen.clone()).unwrap(); + + println!("listening on http://{}", addr); + println!("Sending alerts as {} to {}", app_state.jid, app_state.receiver); + println!("Use http://{}/alert as webhook target", addr); + + axum::Server::bind(&addr) + .serve(app.into_make_service()) + .await + .unwrap(); +} + +fn status_to_emoji(status: &str, severity: &str) -> String { + let emoji = match status { + "firing" => match severity { + "warning" => "⚠️", + _ => "🔥", + }, + "resolved" => "✔️", + _ => "❔", + }; + String::from(emoji) +} + +async fn alert(State(app_state): State, Json(payload): Json) -> Response { + println!("Incoming alerts:"); + + println!("{}", payload); + + let mut message = String::from(""); + + let alerts = match payload.get("alerts") { + Some(alerts) => alerts, + None => { + println!("WARNING: No alerts to process"); + return (StatusCode::OK, "").into_response(); + } + }; + + let alerts = match alerts.as_array() { + Some(alerts) => alerts, + None => { + println!("ERROR: Alerts not of type list"); + return (StatusCode::BAD_REQUEST, "").into_response(); + } + }; + + for alert in alerts { + let status = match alert.get("status") { + Some(status) => status, + _ => { + println!("No status given"); + return (StatusCode::BAD_REQUEST, "").into_response(); + } + }; + + let status = match status.as_str() { + Some(status) => status, + _ => { + println!("ERROR: Status not a string"); + return (StatusCode::BAD_REQUEST, "").into_response(); + } + }; + + let mut severity = ""; + + if let Some(labels) = alert.get("labels") { + if let Some(severity_) = labels.get("severity") { + severity = severity_.as_str().unwrap_or(""); + }; + }; + + message.push_str(status_to_emoji(&status, &severity).as_str()); + + let annotations = match alert.get("annotations") { + Some(annotations) => annotations, + _ => { + println!("ERROR: No annotations given"); + return (StatusCode::BAD_REQUEST, "").into_response(); + } + }; + + if let Some(summary) = annotations.get("summary") { + if let Some(summary) = summary.as_str() { + message.push_str(format!(" {}", summary).as_str()); + } else { + println!("ERROR: Summary not a string"); + return (StatusCode::BAD_REQUEST, "").into_response(); + } + } else { + println!("ERROR: No summary given"); + return (StatusCode::BAD_REQUEST, "").into_response(); + } + + if let Some(description) = annotations.get("description") { + if let Some(description) = description.as_str() { + message.push_str(format!("\n{}", description).as_str()); + } + } + + message.push_str("\n\n"); + } + + let message = message.trim(); + + println!("Send message:"); + + println!("{}", message); + + let mut command = std::process::Command::new("xmppc"); + command.arg("--jid").arg(app_state.jid) + .arg("--pwd").arg(app_state.password) + .arg("--mode").arg("message") + .arg("chat").arg(app_state.receiver).arg(message); + + let mut child = match command.spawn() { + Ok(child) => child, + Err(_) => { + println!("ERROR: Error starting xmppc"); + return (StatusCode::INTERNAL_SERVER_ERROR, "").into_response(); + } + }; + + let status = match child.wait() { + Ok(status) => status, + Err(_) => { + println!("ERROR: Error executing xmppc"); + return (StatusCode::INTERNAL_SERVER_ERROR, "").into_response(); + } + }; + + if !status.success() { + println!("ERROR: xmppc failed sending message"); + return (StatusCode::INTERNAL_SERVER_ERROR, "").into_response(); + } + + println!("Message sent"); + + return ( + StatusCode::OK, + "", + ).into_response(); +}