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Move ap resolve and discovery to tokio.

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This commit is contained in:
Paul Lietar 2017-01-18 15:17:10 +00:00
parent 9d5e2e9fed
commit 9de55bb8cd
9 changed files with 316 additions and 196 deletions
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163
Cargo.lock generated
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@ -7,10 +7,11 @@ dependencies = [
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@ -1251,8 +1269,10 @@ dependencies = [
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@ -1260,13 +1280,12 @@ dependencies = [
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@ -1290,19 +1309,15 @@ dependencies = [
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9
Cargo.toml
View file

@ -27,13 +27,13 @@ ctrlc = { version = "2.0", features = ["termination"] }
env_logger = "0.3.2" env_logger = "0.3.2"
eventual = "0.1.6" eventual = "0.1.6"
getopts = "0.2.14" getopts = "0.2.14"
hyper = { version = "0.9.1", default-features = false } hyper = { git = "https://github.com/hyperium/hyper" }
lazy_static = "0.2.0" lazy_static = "0.2.0"
linear-map = "1.0" linear-map = "1.0"
lmdb-rs = "0.7.2" lmdb-rs = "0.7.2"
log = "0.3.5" log = "0.3.5"
num = "0.1.30" num = "0.1.30"
protobuf = "1.0.15" protobuf = "1.1"
rand = "0.3.13" rand = "0.3.13"
rpassword = "0.3.0" rpassword = "0.3.0"
rust-crypto = "0.2.34" rust-crypto = "0.2.34"
@ -43,7 +43,7 @@ serde_json = "0.8"
serde_macros = { version = "0.8", optional = true } serde_macros = { version = "0.8", optional = true }
shannon = { git = "https://github.com/plietar/rust-shannon" } shannon = { git = "https://github.com/plietar/rust-shannon" }
tempfile = "2.1" tempfile = "2.1"
url = "0.5.0" url = "1.3"
vorbis = "0.1.0" vorbis = "0.1.0"
tremor = { git = "https://github.com/plietar/rust-tremor", optional = true } tremor = { git = "https://github.com/plietar/rust-tremor", optional = true }
@ -57,9 +57,10 @@ protobuf_macros = { git = "https://github.com/plietar/rust-protobuf-macros" }
mdns = { git = "https://github.com/plietar/rust-mdns" } mdns = { git = "https://github.com/plietar/rust-mdns" }
error-chain = "0.7.0"
futures = "0.1.8" futures = "0.1.8"
tokio-proto = "0.1.0"
tokio-core = "0.1.2" tokio-core = "0.1.2"
tokio-proto = "0.1.0"
[build-dependencies] [build-dependencies]
vergen = "0.1.0" vergen = "0.1.0"

57
src/apresolve.rs
View file

@ -1,27 +1,56 @@
const APRESOLVE_ENDPOINT : &'static str = "http://apresolve.spotify.com/";
const AP_FALLBACK : &'static str = "ap.spotify.com:80"; const AP_FALLBACK : &'static str = "ap.spotify.com:80";
const APRESOLVE_ENDPOINT : &'static str = "http://apresolve.spotify.com/";
use hyper; use futures::{Future, Stream};
use std::io::Read; use hyper::{self, Url, Client};
use serde_json; use serde_json;
use tokio_core::reactor::Handle;
error_chain! { }
#[derive(Clone, Debug, Serialize, Deserialize)] #[derive(Clone, Debug, Serialize, Deserialize)]
pub struct APResolveData { pub struct APResolveData {
ap_list: Vec<String> ap_list: Vec<String>
} }
pub fn apresolve() -> String { pub fn apresolve(handle: &Handle) -> Box<Future<Item=String, Error=Error>> {
let client = hyper::Client::new(); let url = Url::parse(APRESOLVE_ENDPOINT).expect("invalid AP resolve URL");
(|| { let client = Client::new(&handle);
let mut response = client.get(APRESOLVE_ENDPOINT).send().map_err(|_| ())?; let response = client.get(url);
let mut data = String::new();
response.read_to_string(&mut data).map_err(|_| ())?;
let data : APResolveData = serde_json::from_str(&data).map_err(|_| ())?; let body = response.and_then(|response| {
data.ap_list.first().map(Clone::clone).ok_or(()) response.body().fold(Vec::new(), |mut acc, chunk| {
})().unwrap_or_else(|_| { acc.extend_from_slice(chunk.as_ref());
warn!("failed to resolve AP, using fallback"); Ok::<_, hyper::Error>(acc)
AP_FALLBACK.into()
}) })
});
let body = body.then(|result| result.chain_err(|| "HTTP error"));
let body = body.and_then(|body| {
String::from_utf8(body).chain_err(|| "invalid UTF8 in response")
});
let data = body.and_then(|body| {
serde_json::from_str::<APResolveData>(&body)
.chain_err(|| "invalid JSON")
});
let ap = data.and_then(|data| {
let ap = data.ap_list.first().ok_or("empty AP List")?;
Ok(ap.clone())
});
Box::new(ap)
}
pub fn apresolve_or_fallback<E>(handle: &Handle)
-> Box<Future<Item=String, Error=E>>
where E: 'static
{
let ap = apresolve(handle).or_else(|e| {
warn!("Failed to resolve Access Point: {}", e.description());
warn!("Using fallback \"{}\"", AP_FALLBACK);
Ok(AP_FALLBACK.into())
});
Box::new(ap)
} }

195
src/authentication/discovery.rs
View file

@ -1,34 +1,70 @@
use crypto;
use crypto::mac::Mac;
use crypto::digest::Digest; use crypto::digest::Digest;
use hyper; use crypto::mac::Mac;
use hyper::net::NetworkListener; use crypto;
use diffie_hellman::{DH_GENERATOR, DH_PRIME};
use futures::{Future, Stream, BoxFuture};
use futures::sync::mpsc;
use hyper::{self, Get, Post, StatusCode};
use hyper::server::{Server, Service, NewService, Request, Response};
use mdns;
use num::BigUint; use num::BigUint;
use url;
use rand; use rand;
use rustc_serialize::base64::{self, ToBase64, FromBase64}; use rustc_serialize::base64::{self, ToBase64, FromBase64};
use std::io;
use std::collections::BTreeMap; use std::collections::BTreeMap;
use std::io::{Read, Write}; use std::sync::Arc;
use std::sync::{mpsc, Mutex}; use url;
use mdns; use tokio_core::reactor::Handle;
use std::net::SocketAddr;
use authentication::Credentials; use authentication::Credentials;
use diffie_hellman::{DH_GENERATOR, DH_PRIME}; use connection::adaptor::adapt_future;
use util; use util;
struct ServerHandler { #[derive(Clone)]
credentials_tx: Mutex<mpsc::Sender<Credentials>>, struct Discovery(Arc<DiscoveryInner>);
struct DiscoveryInner {
private_key: BigUint, private_key: BigUint,
public_key: BigUint, public_key: BigUint,
device_id: String, device_id: String,
device_name: String, device_name: String,
tx: mpsc::UnboundedSender<Credentials>,
} }
impl ServerHandler { impl Discovery {
fn handle_get_info(&self, _params: &BTreeMap<String, String>, pub fn new(device_name: String, device_id: String)
mut response: hyper::server::Response<hyper::net::Fresh>) { -> (Discovery, mpsc::UnboundedReceiver<Credentials>)
{
let (tx, rx) = mpsc::unbounded();
let public_key = self.public_key.to_bytes_be() let key_data = util::rand_vec(&mut rand::thread_rng(), 95);
let private_key = BigUint::from_bytes_be(&key_data);
let public_key = util::powm(&DH_GENERATOR, &private_key, &DH_PRIME);
let discovery = Discovery(Arc::new(DiscoveryInner {
device_name: device_name.to_owned(),
device_id: device_id.to_owned(),
private_key: private_key,
public_key: public_key,
tx: tx,
}));
(discovery, rx)
}
pub fn serve(&self, addr: &SocketAddr, handle: &Handle)
-> hyper::Result<SocketAddr>
{
let server = Server::http(&addr, handle)?;
server.handle(self.clone(), handle)
}
}
impl Discovery {
fn handle_get_info(&self, _params: &BTreeMap<String, String>)
-> ::futures::Finished<Response, hyper::Error>
{
let public_key = self.0.public_key.to_bytes_be()
.to_base64(base64::STANDARD); .to_base64(base64::STANDARD);
let result = json!({ let result = json!({
@ -36,8 +72,8 @@ impl ServerHandler {
"statusString": "ERROR-OK", "statusString": "ERROR-OK",
"spotifyError": 0, "spotifyError": 0,
"version": "2.1.0", "version": "2.1.0",
"deviceID": (self.device_id), "deviceID": (self.0.device_id),
"remoteName": (self.device_name), "remoteName": (self.0.device_name),
"activeUser": "", "activeUser": "",
"publicKey": (public_key), "publicKey": (public_key),
"deviceType": "UNKNOWN", "deviceType": "UNKNOWN",
@ -47,13 +83,13 @@ impl ServerHandler {
"modelDisplayName": "librespot", "modelDisplayName": "librespot",
}); });
*response.status_mut() = hyper::status::StatusCode::Ok; let body = result.to_string();
response.start().unwrap().write_all(result.to_string().as_bytes()).unwrap(); ::futures::finished(Response::new().with_body(body))
} }
fn handle_add_user(&self, params: &BTreeMap<String, String>, fn handle_add_user(&self, params: &BTreeMap<String, String>)
mut response: hyper::server::Response<hyper::net::Fresh>) { -> ::futures::Finished<Response, hyper::Error>
{
let username = params.get("userName").unwrap(); let username = params.get("userName").unwrap();
let encrypted_blob = params.get("blob").unwrap(); let encrypted_blob = params.get("blob").unwrap();
let client_key = params.get("clientKey").unwrap(); let client_key = params.get("clientKey").unwrap();
@ -63,7 +99,7 @@ impl ServerHandler {
let client_key = client_key.from_base64().unwrap(); let client_key = client_key.from_base64().unwrap();
let client_key = BigUint::from_bytes_be(&client_key); let client_key = BigUint::from_bytes_be(&client_key);
let shared_key = util::powm(&client_key, &self.private_key, &DH_PRIME); let shared_key = util::powm(&client_key, &self.0.private_key, &DH_PRIME);
let iv = &encrypted_blob[0..16]; let iv = &encrypted_blob[0..16];
let encrypted = &encrypted_blob[16..encrypted_blob.len() - 20]; let encrypted = &encrypted_blob[16..encrypted_blob.len() - 20];
@ -106,9 +142,9 @@ impl ServerHandler {
String::from_utf8(data).unwrap() String::from_utf8(data).unwrap()
}; };
let credentials = Credentials::with_blob(username.to_owned(), &decrypted, &self.device_id); let credentials = Credentials::with_blob(username.to_owned(), &decrypted, &self.0.device_id);
self.credentials_tx.lock().unwrap().send(credentials).unwrap(); self.0.tx.send(credentials).unwrap();
let result = json!({ let result = json!({
"status": 101, "status": 101,
@ -116,74 +152,87 @@ impl ServerHandler {
"statusString": "ERROR-OK" "statusString": "ERROR-OK"
}); });
*response.status_mut() = hyper::status::StatusCode::Ok; let body = result.to_string();
response.start().unwrap().write_all(result.to_string().as_bytes()).unwrap(); ::futures::finished(Response::new().with_body(body))
} }
fn not_found(&self, mut response: hyper::server::Response<hyper::net::Fresh>) { fn not_found(&self)
-> ::futures::Finished<Response, hyper::Error>
*response.status_mut() = hyper::status::StatusCode::NotFound {
::futures::finished(Response::new().with_status(StatusCode::NotFound))
} }
} }
impl hyper::server::Handler for ServerHandler { impl Service for Discovery {
fn handle<'a, 'k>(&'a self, type Request = Request;
mut request: hyper::server::Request<'a, 'k>, type Response = Response;
response: hyper::server::Response<'a, hyper::net::Fresh>) { type Error = hyper::Error;
type Future = BoxFuture<Response, hyper::Error>;
if let hyper::uri::RequestUri::AbsolutePath(path) = request.uri.clone() { fn call(&self, request: Request) -> Self::Future {
let (_, query, _) = url::parse_path(&path).unwrap(); let mut params = BTreeMap::new();
let mut params = query.map_or(vec![], |q| url::form_urlencoded::parse(q.as_bytes()))
.into_iter().collect::<BTreeMap<_,_>>();
if request.method == hyper::method::Method::Post { let (method, uri, _, _, body) = request.deconstruct();
let mut body = Vec::new(); if let Some(query) = uri.query() {
request.read_to_end(&mut body).unwrap(); params.extend(url::form_urlencoded::parse(query.as_bytes()).into_owned());
let form = url::form_urlencoded::parse(&body);
params.extend(form);
} }
debug!("{:?} {:?} {:?}", request.method, path, params); debug!("{:?} {:?} {:?}", method, uri.path(), params);
match params.get("action").map(AsRef::as_ref) { let this = self.clone();
Some("getInfo") => self.handle_get_info(&params, response), body.fold(Vec::new(), |mut acc, chunk| {
Some("addUser") => self.handle_add_user(&params, response), acc.extend_from_slice(chunk.as_ref());
_ => self.not_found(response), Ok::<_, hyper::Error>(acc)
} }).map(move |body| {
} else { params.extend(url::form_urlencoded::parse(&body).into_owned());
self.not_found(response) params
}).and_then(move |params| {
match (method, params.get("action").map(AsRef::as_ref)) {
(Get, Some("getInfo")) => this.handle_get_info(&params),
(Post, Some("addUser")) => this.handle_add_user(&params),
_ => this.not_found(),
} }
}).boxed()
} }
} }
pub fn discovery_login(device_name: &str, device_id: &str) -> Result<Credentials, ()> { impl NewService for Discovery {
let (tx, rx) = mpsc::channel(); type Request = Request;
type Response = Response;
type Error = hyper::Error;
type Instance = Self;
let key_data = util::rand_vec(&mut rand::thread_rng(), 95); fn new_service(&self) -> io::Result<Self::Instance> {
let private_key = BigUint::from_bytes_be(&key_data); Ok(self.clone())
let public_key = util::powm(&DH_GENERATOR, &private_key, &DH_PRIME); }
}
let handler = ServerHandler { pub fn discovery_login<A,B>(device_name: A, device_id: B) -> Result<Credentials, ()>
device_name: device_name.to_owned(), where A: Into<String>,
device_id: device_id.to_owned(), B: Into<String>
private_key: private_key, {
public_key: public_key, let device_name = device_name.into();
credentials_tx: Mutex::new(tx), let device_id = device_id.into();
};
let mut listener = hyper::net::HttpListener::new("0.0.0.0:0").unwrap(); let (discovery, rx) = Discovery::new(device_name.clone(), device_id);
let port = listener.local_addr().unwrap().port();
let mut server = hyper::Server::new(listener).handle(handler).unwrap(); let addr = "0.0.0.0:0".parse().unwrap();
let cred = adapt_future(move |handle| {
let addr = discovery.serve(&addr, &handle).unwrap();
let responder = mdns::Responder::new().unwrap(); let responder = mdns::Responder::spawn(&handle).unwrap();
let _svc = responder.register( let svc = responder.register(
"_spotify-connect._tcp".to_owned(), "_spotify-connect._tcp".to_owned(),
device_name.to_owned(), device_name,
port, addr.port(),
&["VERSION=1.0", "CPath=/"]); &["VERSION=1.0", "CPath=/"]);
let cred = rx.recv().unwrap(); rx.into_future()
server.close().unwrap(); .map(move |(creds, _)| (creds, svc))
Ok(cred) .map_err(|(e, _)| e)
});
let (creds, _svc) = cred.wait().unwrap().unwrap();
Ok(creds.unwrap())
} }

3
src/authentication/mod.rs
View file

@ -197,7 +197,8 @@ pub fn get_credentials(session: &Session, username: Option<String>, password: Op
(None, _, None) => { (None, _, None) => {
info!("No username provided and no stored credentials, starting discovery ..."); info!("No username provided and no stored credentials, starting discovery ...");
discovery_login(&session.config().device_name, session.device_id()).unwrap() discovery_login(session.config().device_name.clone(),
session.device_id()).unwrap()
} }
} }
} }

26
src/connection/adaptor.rs
View file

@ -1,5 +1,6 @@
use futures::future::ok; use futures::future::ok;
use futures::sync::mpsc; use futures::sync::mpsc;
use futures::sync::oneshot;
use futures::{Future, Sink, Stream, BoxFuture, IntoFuture}; use futures::{Future, Sink, Stream, BoxFuture, IntoFuture};
use std::thread; use std::thread;
use tokio_core::reactor::Core; use tokio_core::reactor::Core;
@ -52,7 +53,7 @@ fn adapt_stream<S>(stream: S, tx: mpsc::Sender<Result<S::Item, S::Error>>) -> Bo
} }
pub fn adapt<F, U, S>(f: F) -> (SinkAdaptor<S::SinkItem>, StreamAdaptor<S::Item, S::Error>) pub fn adapt<F, U, S>(f: F) -> (SinkAdaptor<S::SinkItem>, StreamAdaptor<S::Item, S::Error>)
where F: FnOnce(&Handle) -> U + Send + 'static, where F: FnOnce(Handle) -> U + Send + 'static,
U: IntoFuture<Item=S>, U: IntoFuture<Item=S>,
S: Sink + Stream + Send + 'static, S: Sink + Stream + Send + 'static,
S::Item: Send + 'static, S::Item: Send + 'static,
@ -69,7 +70,7 @@ pub fn adapt<F, U, S>(f: F) -> (SinkAdaptor<S::SinkItem>, StreamAdaptor<S::Item,
let mut core = Core::new().unwrap(); let mut core = Core::new().unwrap();
let handle = core.handle(); let handle = core.handle();
let task = let task =
f(&handle).into_future() f(handle).into_future()
.map(|connection| connection.split()) .map(|connection| connection.split())
.map_err(|_| ()) .map_err(|_| ())
.and_then(|(sink, stream)| { .and_then(|(sink, stream)| {
@ -83,3 +84,24 @@ pub fn adapt<F, U, S>(f: F) -> (SinkAdaptor<S::SinkItem>, StreamAdaptor<S::Item,
(SinkAdaptor(Some(sender_tx)), (SinkAdaptor(Some(sender_tx)),
StreamAdaptor(Some(receiver_rx))) StreamAdaptor(Some(receiver_rx)))
} }
pub fn adapt_future<F, U>(f: F) -> oneshot::Receiver<Result<U::Item, U::Error>>
where F: FnOnce(Handle) -> U + Send + 'static,
U: IntoFuture,
U::Item: Send + 'static,
U::Error: Send + 'static,
{
let (tx, rx) = oneshot::channel();
thread::spawn(move || {
let mut core = Core::new().unwrap();
let handle = core.handle();
let task = f(handle).into_future();
let result = core.run(task);
tx.complete(result);
});
rx
}

1
src/lib.in.rs
View file

@ -2,5 +2,4 @@ pub mod apresolve;
pub mod authentication; pub mod authentication;
pub mod connection; pub mod connection;
pub mod mercury; pub mod mercury;
pub mod session;
pub mod spirc; pub mod spirc;

7
src/lib.rs
View file

@ -8,6 +8,8 @@
#![cfg_attr(feature="clippy", feature(plugin))] #![cfg_attr(feature="clippy", feature(plugin))]
#![cfg_attr(feature="clippy", plugin(clippy))] #![cfg_attr(feature="clippy", plugin(clippy))]
#[macro_use] extern crate error_chain;
#[macro_use] extern crate futures;
#[macro_use] extern crate lazy_static; #[macro_use] extern crate lazy_static;
#[macro_use] extern crate log; #[macro_use] extern crate log;
@ -29,11 +31,9 @@ extern crate serde;
extern crate serde_json; extern crate serde_json;
extern crate shannon; extern crate shannon;
extern crate tempfile; extern crate tempfile;
extern crate url;
#[macro_use] extern crate futures;
extern crate tokio_core; extern crate tokio_core;
extern crate tokio_proto; extern crate tokio_proto;
extern crate url;
extern crate librespot_protocol as protocol; extern crate librespot_protocol as protocol;
@ -60,6 +60,7 @@ pub mod diffie_hellman;
pub mod link; pub mod link;
pub mod metadata; pub mod metadata;
pub mod player; pub mod player;
pub mod session;
pub mod stream; pub mod stream;
pub mod util; pub mod util;
pub mod version; pub mod version;

17
src/session.rs
View file

@ -12,7 +12,7 @@ use futures::Stream;
use futures::sync::oneshot; use futures::sync::oneshot;
use album_cover::AlbumCover; use album_cover::AlbumCover;
use apresolve::apresolve; use apresolve::apresolve_or_fallback;
use audio_file::AudioFile; use audio_file::AudioFile;
use audio_key::{AudioKeyManager, AudioKey, AudioKeyError}; use audio_key::{AudioKeyManager, AudioKey, AudioKeyError};
use authentication::Credentials; use authentication::Credentials;
@ -101,16 +101,19 @@ impl Session {
} }
pub fn login(&self, credentials: Credentials) -> Result<Credentials, ()> { pub fn login(&self, credentials: Credentials) -> Result<Credentials, ()> {
let addr = apresolve();
let device_id = self.device_id().to_owned(); let device_id = self.device_id().to_owned();
let (creds_tx, creds_rx) = oneshot::channel(); let (creds_tx, creds_rx) = oneshot::channel();
info!("Connecting to AP {}", addr);
let (tx, rx) = adaptor::adapt(move |handle| { let (tx, rx) = adaptor::adapt(move |handle| {
let connection = connection::connect(&addr as &str, &handle); let access_point = apresolve_or_fallback::<io::Error>(&handle);
let authentication = connection.and_then(|connection| {
let connection = access_point.and_then(move |addr| {
info!("Connecting to AP \"{}\"", addr);
connection::connect::<&str>(&addr, &handle)
});
let authentication = connection.and_then(move |connection| {
connection::authenticate(connection, credentials, device_id) connection::authenticate(connection, credentials, device_id)
}); });
@ -120,7 +123,7 @@ impl Session {
}) })
}); });
let reusable_credentials = creds_rx.wait().unwrap(); let reusable_credentials: Credentials = creds_rx.wait().unwrap();
self.0.data.write().unwrap().canonical_username = reusable_credentials.username.clone(); self.0.data.write().unwrap().canonical_username = reusable_credentials.username.clone();
*self.0.rx_connection.lock().unwrap() = Some(rx); *self.0.rx_connection.lock().unwrap() = Some(rx);