// Copyright 2015, 2016 Ethcore (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see .
//! Ethcore Webapplications for Parity
//! ```
//! extern crate jsonrpc_core;
//! extern crate ethcore_dapps;
//!
//! use std::sync::Arc;
//! use jsonrpc_core::IoHandler;
//! use ethcore_dapps::*;
//!
//! struct SayHello;
//! impl MethodCommand for SayHello {
//! fn execute(&self, _params: Params) -> Result {
//! Ok(Value::String("hello".to_string()))
//! }
//! }
//!
//! fn main() {
//! let io = IoHandler::new();
//! io.add_method("say_hello", SayHello);
//! let _server = Server::start_unsecure_http(
//! &"127.0.0.1:3030".parse().unwrap(),
//! Arc::new(io)
//! );
//! }
//! ```
//!
#![warn(missing_docs)]
#![cfg_attr(feature="nightly", plugin(clippy))]
#[macro_use]
extern crate log;
extern crate url as url_lib;
extern crate hyper;
extern crate unicase;
extern crate serde;
extern crate serde_json;
extern crate zip;
extern crate rand;
extern crate ethabi;
extern crate jsonrpc_core;
extern crate jsonrpc_http_server;
extern crate mime_guess;
extern crate rustc_serialize;
extern crate parity_dapps;
extern crate ethcore_rpc;
extern crate ethcore_util as util;
extern crate linked_hash_map;
mod endpoint;
mod apps;
mod page;
mod router;
mod handlers;
mod rpc;
mod api;
mod proxypac;
mod url;
#[cfg(test)]
mod tests;
pub use self::apps::urlhint::ContractClient;
use std::sync::{Arc, Mutex};
use std::net::SocketAddr;
use std::collections::HashMap;
use jsonrpc_core::{IoHandler, IoDelegate};
use router::auth::{Authorization, NoAuth, HttpBasicAuth};
use ethcore_rpc::Extendable;
static DAPPS_DOMAIN : &'static str = ".parity";
/// Webapps HTTP+RPC server build.
pub struct ServerBuilder {
dapps_path: String,
handler: Arc,
registrar: Arc,
}
impl Extendable for ServerBuilder {
fn add_delegate(&self, delegate: IoDelegate) {
self.handler.add_delegate(delegate);
}
}
impl ServerBuilder {
/// Construct new dapps server
pub fn new(dapps_path: String, registrar: Arc) -> Self {
ServerBuilder {
dapps_path: dapps_path,
handler: Arc::new(IoHandler::new()),
registrar: registrar,
}
}
/// Asynchronously start server with no authentication,
/// returns result with `Server` handle on success or an error.
pub fn start_unsecured_http(&self, addr: &SocketAddr, hosts: Option>) -> Result {
Server::start_http(
addr,
hosts,
NoAuth,
self.handler.clone(),
self.dapps_path.clone(),
self.registrar.clone()
)
}
/// Asynchronously start server with `HTTP Basic Authentication`,
/// return result with `Server` handle on success or an error.
pub fn start_basic_auth_http(&self, addr: &SocketAddr, hosts: Option>, username: &str, password: &str) -> Result {
Server::start_http(
addr,
hosts,
HttpBasicAuth::single_user(username, password),
self.handler.clone(),
self.dapps_path.clone(),
self.registrar.clone()
)
}
}
/// Webapps HTTP server.
pub struct Server {
server: Option,
panic_handler: Arc () + Send>>>>,
}
impl Server {
/// Returns a list of allowed hosts or `None` if all hosts are allowed.
fn allowed_hosts(hosts: Option>, bind_address: String) -> Option> {
let mut allowed = Vec::new();
match hosts {
Some(hosts) => allowed.extend_from_slice(&hosts),
None => return None,
}
// Add localhost domain as valid too if listening on loopback interface.
allowed.push(bind_address.replace("127.0.0.1", "localhost").into());
allowed.push(bind_address.into());
Some(allowed)
}
fn start_http(
addr: &SocketAddr,
hosts: Option>,
authorization: A,
handler: Arc,
dapps_path: String,
registrar: Arc,
) -> Result {
let panic_handler = Arc::new(Mutex::new(None));
let authorization = Arc::new(authorization);
let apps_fetcher = Arc::new(apps::fetcher::AppFetcher::new(apps::urlhint::URLHintContract::new(registrar)));
let endpoints = Arc::new(apps::all_endpoints(dapps_path));
let special = Arc::new({
let mut special = HashMap::new();
special.insert(router::SpecialEndpoint::Rpc, rpc::rpc(handler, panic_handler.clone()));
special.insert(router::SpecialEndpoint::Api, api::RestApi::new(format!("{}", addr), endpoints.clone()));
special.insert(router::SpecialEndpoint::Utils, apps::utils());
special
});
let hosts = Self::allowed_hosts(hosts, format!("{}", addr));
try!(hyper::Server::http(addr))
.handle(move |ctrl| router::Router::new(
ctrl,
apps::main_page(),
apps_fetcher.clone(),
endpoints.clone(),
special.clone(),
authorization.clone(),
hosts.clone(),
))
.map(|(l, srv)| {
::std::thread::spawn(move || {
srv.run();
});
Server {
server: Some(l),
panic_handler: panic_handler,
}
})
.map_err(ServerError::from)
}
/// Set callback for panics.
pub fn set_panic_handler(&self, handler: F) where F : Fn() -> () + Send + 'static {
*self.panic_handler.lock().unwrap() = Some(Box::new(handler));
}
/// Returns address that this server is bound to.
pub fn addr(&self) -> &SocketAddr {
self.server.as_ref().unwrap().addr()
}
}
impl Drop for Server {
fn drop(&mut self) {
self.server.take().unwrap().close()
}
}
/// Webapp Server startup error
#[derive(Debug)]
pub enum ServerError {
/// Wrapped `std::io::Error`
IoError(std::io::Error),
/// Other `hyper` error
Other(hyper::error::Error),
}
impl From for ServerError {
fn from(err: hyper::error::Error) -> Self {
match err {
hyper::error::Error::Io(e) => ServerError::IoError(e),
e => ServerError::Other(e),
}
}
}
/// Random filename
pub fn random_filename() -> String {
use ::rand::Rng;
let mut rng = ::rand::OsRng::new().unwrap();
rng.gen_ascii_chars().take(12).collect()
}
#[cfg(test)]
mod util_tests {
use super::Server;
#[test]
fn should_return_allowed_hosts() {
// given
let bind_address = "127.0.0.1".to_owned();
// when
let all = Server::allowed_hosts(None, bind_address.clone());
let address = Server::allowed_hosts(Some(Vec::new()), bind_address.clone());
let some = Server::allowed_hosts(Some(vec!["ethcore.io".into()]), bind_address.clone());
// then
assert_eq!(all, None);
assert_eq!(address, Some(vec!["localhost".into(), "127.0.0.1".into()]));
assert_eq!(some, Some(vec!["ethcore.io".into(), "localhost".into(), "127.0.0.1".into()]));
}
}