4 files changed, 312 insertions, 0 deletions
diff --git a/angelsharkd/src/config.rs b/angelsharkd/src/config.rs
new file mode 100644
index 0000000..b0866be
--- /dev/null
+++ b/angelsharkd/src/config.rs
@@ -0,0 +1,49 @@
+use anyhow::{Context, Result};
+use libangelshark::{Acm, AcmRunner};
+use std::{
+    env,
+    fs::File,
+    net::{Ipv4Addr, SocketAddrV4},
+};
+
+#[derive(Clone)]
+pub struct Config {
+    pub bind_addr: SocketAddrV4,
+    pub debug_mode: bool,
+    pub runner: AcmRunner,
+    pub origin: String,
+}
+
+impl Config {
+    pub fn init() -> Result<Self> {
+        let debug_mode = cfg!(debug_assertions) || env::var_os("ANGELSHARKD_DEBUG").is_some();
+
+        let bind_addr: SocketAddrV4 = env::var("ANGELSHARKD_ADDR")
+            .map(|addr| addr.parse())
+            .unwrap_or_else(|_| Ok(SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), 8080)))
+            .with_context(|| "Failed to parse socket bind address.")?;
+
+        let origin = env::var("ANGELSHARKD_ORIGIN").unwrap_or_default();
+
+        let logins = if let Ok(path) = env::var("ANGELSHARKD_LOGINS") {
+            File::open(path)
+        } else {
+            File::open("./asa.cfg")
+        }
+        .with_context(|| "Failed to open logins file.")?;
+
+        let mut runner = AcmRunner::default();
+        for (job_name, acm) in
+            Acm::from_logins(logins).with_context(|| "Failed to parse logins.")?
+        {
+            runner.register_acm(&job_name, acm);
+        }
+
+        Ok(Self {
+            bind_addr,
+            origin,
+            debug_mode,
+            runner,
+        })
+    }
+}
diff --git a/angelsharkd/src/main.rs b/angelsharkd/src/main.rs
new file mode 100644
index 0000000..22e4161
--- /dev/null
+++ b/angelsharkd/src/main.rs
@@ -0,0 +1,59 @@
+use crate::config::Config;
+use anyhow::{Context, Result};
+use log::{debug, error, info, LevelFilter};
+use tokio::{signal, task};
+use warp::{hyper::Method, Filter};
+
+mod config;
+mod routes;
+
+#[tokio::main]
+async fn main() -> Result<()> {
+    // Init config.
+    let config = Config::init().with_context(|| "Failed to initialize config.")?;
+
+    // Init logging.
+    env_logger::Builder::new()
+        .filter(
+            None,
+            if config.debug_mode {
+                LevelFilter::Debug
+            } else {
+                LevelFilter::Info
+            },
+        )
+        .init();
+
+    if config.debug_mode {
+        debug!("**** DEBUGGING MODE ENABLED ****");
+    }
+
+    let routes = routes::index()
+        .or(routes::ossi(&config))
+        .with(if config.debug_mode {
+            warp::cors()
+                .allow_any_origin()
+                .allow_methods(&[Method::GET, Method::POST])
+        } else {
+            warp::cors()
+                .allow_origin(config.origin.as_str())
+                .allow_methods(&[Method::GET, Method::POST])
+        })
+        .with(warp::log("angelsharkd"));
+
+    // Create server with shutdown signal.
+    let (addr, server) = warp::serve(routes).bind_with_graceful_shutdown(config.bind_addr, async {
+        signal::ctrl_c()
+            .await
+            .expect("Failed to install CTRL+C signal handler.");
+    });
+
+    // Run server to completion.
+    info!("Starting server on {} ...", addr);
+    if let Err(e) = task::spawn(server).await {
+        error!("Server died unexpectedly: {}", e.to_string());
+    }
+    info!("Stopping server...");
+
+    Ok(())
+}
diff --git a/angelsharkd/src/routes/dtos.rs b/angelsharkd/src/routes/dtos.rs
new file mode 100644
index 0000000..fe3f184
--- /dev/null
+++ b/angelsharkd/src/routes/dtos.rs
@@ -0,0 +1,67 @@
+use libangelshark::Message;
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Debug)]
+pub struct Error {
+    pub reason: String,
+}
+
+#[derive(Serialize, Debug)]
+pub struct Version {
+    pub daemon_version: &'static str,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct Query {
+    pub no_cache: Option<bool>,
+    pub panicky: Option<bool>,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct Request {
+    pub acms: Vec<String>,
+    pub command: String,
+    pub fields: Option<Vec<String>>,
+    pub datas: Option<Vec<Vec<String>>>,
+}
+
+impl From<Request> for Vec<(String, Message)> {
+    fn from(val: Request) -> Self {
+        val.acms
+            .iter()
+            .map(|name| {
+                (
+                    name.to_owned(),
+                    Message {
+                        command: val.command.clone(),
+                        fields: val.fields.clone(),
+                        datas: val.datas.clone(),
+                        error: None,
+                    },
+                )
+            })
+            .collect()
+    }
+}
+
+#[derive(Debug, Serialize)]
+pub struct Response {
+    pub acm: String,
+    pub command: String,
+    pub error: String,
+    pub fields: Vec<String>,
+    pub datas: Vec<Vec<String>>,
+}
+
+impl From<(String, Message)> for Response {
+    fn from(msg: (String, Message)) -> Self {
+        let (acm, msg) = msg;
+        Self {
+            acm,
+            command: msg.command,
+            fields: msg.fields.unwrap_or_default(),
+            datas: msg.datas.unwrap_or_default(),
+            error: msg.error.unwrap_or_default(),
+        }
+    }
+}
diff --git a/angelsharkd/src/routes/mod.rs b/angelsharkd/src/routes/mod.rs
new file mode 100644
index 0000000..40d024d
--- /dev/null
+++ b/angelsharkd/src/routes/mod.rs
@@ -0,0 +1,137 @@
+use crate::config::Config;
+use anyhow::Error as AnyhowError;
+use dtos::*;
+use libangelshark::{AcmRunner, Message, ParallelIterator};
+use log::debug;
+use std::convert::Infallible;
+use warp::{
+    body,
+    hyper::{header, StatusCode},
+    path, post,
+    reply::{self, with},
+    Filter, Rejection, Reply,
+};
+
+mod dtos;
+
+/// GET / -> Name and version # of app.
+pub fn index() -> impl Filter<Extract = impl Reply, Error = Rejection> + Clone {
+    path::end().and_then(handle_version)
+}
+
+/// POST /ossi with JSON inputs -> JSON outputs
+pub fn ossi(config: &Config) -> impl Filter<Extract = impl Reply, Error = Rejection> + Clone {
+    let runner = config.runner.clone();
+    path("ossi")
+        .and(post())
+        .and(warp::query::<Query>())
+        .and(json_body())
+        .and(with_runner(runner))
+        .and_then(handle_ossi)
+        .with(with::header(header::PRAGMA, "no-cache"))
+        .with(with::header(header::CACHE_CONTROL, "no-store, max-age=0"))
+        .with(with::header(header::X_FRAME_OPTIONS, "DENY"))
+}
+
+/// For passing runner to handlers.
+fn with_runner(
+    runner: AcmRunner,
+) -> impl Filter<Extract = (AcmRunner,), Error = Infallible> + Clone {
+    warp::any().map(move || runner.clone())
+}
+
+/// JSON request body filter with content length limit.
+fn json_body() -> impl Filter<Extract = (Vec<Request>,), Error = Rejection> + Clone {
+    body::content_length_limit(1024 * 16).and(body::json())
+}
+
+/// Handle version requests.
+async fn handle_version() -> Result<impl Reply, Infallible> {
+    Ok(reply::json(&Version {
+        daemon_version: env!("CARGO_PKG_VERSION"),
+    }))
+}
+
+/// Handle OSSI requests.
+async fn handle_ossi(
+    query: Query,
+    requests: Vec<Request>,
+    mut runner: AcmRunner,
+) -> Result<impl Reply, Infallible> {
+    debug!("{:?}", query);
+    debug!("{:?}", requests);
+
+    // Queue request inputs on runner.
+    for (job_name, input) in requests
+        .into_iter()
+        .map(|r| -> Vec<(String, Message)> { r.into() })
+        .flatten()
+    {
+        runner.queue_input(&job_name, &input);
+    }
+
+    // Collect runner results and convert to responses.
+    let responses: Vec<Result<Vec<Response>, AnyhowError>> = if query.no_cache.unwrap_or_default() {
+        // Run without cache.
+        runner
+            .run()
+            .map(|(name, output)| {
+                let output: Vec<Response> = output?
+                    .into_iter()
+                    .filter_map(move |o| {
+                        if o.command == "logoff" {
+                            None
+                        } else {
+                            Some(Response::from((name.clone(), o)))
+                        }
+                    })
+                    .collect();
+                Ok(output)
+            })
+            .collect()
+    } else {
+        // Run with cache.
+        runner
+            .run_cached()
+            .map(|(name, output)| {
+                let output: Vec<Response> = output?
+                    .into_iter()
+                    .filter_map(move |o| {
+                        if o.command == "logoff" {
+                            None
+                        } else {
+                            Some(Response::from((name.clone(), o)))
+                        }
+                    })
+                    .collect();
+                Ok(output)
+            })
+            .collect()
+    };
+
+    // Handle errors from runner.
+    if query.panicky.unwrap_or_default() {
+        // Return an internal error if anything went wrong.
+        let responses: Result<Vec<Vec<Response>>, _> = responses.into_iter().collect();
+        match responses {
+            Err(e) => Ok(reply::with_status(
+                reply::json(&Error {
+                    reason: e.to_string(),
+                }),
+                StatusCode::INTERNAL_SERVER_ERROR,
+            )),
+            Ok(r) => Ok(reply::with_status(
+                reply::json(&r.into_iter().flatten().collect::<Vec<Response>>()),
+                StatusCode::OK,
+            )),
+        }
+    } else {
+        // Discard errors and return just good data.
+        let responses: Vec<Response> = responses
+            .into_iter()
+            .filter_map(|r| r.ok())
+            .flatten()
+            .collect();
+        Ok(reply::with_status(reply::json(&responses), StatusCode::OK))
+    }
+}