// Copyright 2015, 2016 Parity Technologies (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 . use std::path::PathBuf; use std::sync::Arc; use io::PanicHandler; use rpc_apis; use ethcore::client::Client; use ethsync::SyncProvider; use helpers::replace_home; use dir::default_data_path; use rpc_apis::SignerService; use hash_fetch::fetch::Client as FetchClient; use parity_reactor::Remote; #[derive(Debug, PartialEq, Clone)] pub struct Configuration { pub enabled: bool, pub interface: String, pub port: u16, pub hosts: Option>, pub user: Option, pub pass: Option, pub dapps_path: PathBuf, pub extra_dapps: Vec, } impl Default for Configuration { fn default() -> Self { let data_dir = default_data_path(); Configuration { enabled: true, interface: "127.0.0.1".into(), port: 8080, hosts: Some(Vec::new()), user: None, pass: None, dapps_path: replace_home(&data_dir, "$BASE/dapps").into(), extra_dapps: vec![], } } } pub struct Dependencies { pub panic_handler: Arc, pub apis: Arc, pub client: Arc, pub sync: Arc, pub remote: Remote, pub fetch: FetchClient, pub signer: Arc, } pub fn new(configuration: Configuration, deps: Dependencies) -> Result, String> { if !configuration.enabled { return Ok(None); } let url = format!("{}:{}", configuration.interface, configuration.port); let addr = url.parse().map_err(|_| format!("Invalid Webapps listen host/port given: {}", url))?; let auth = configuration.user.as_ref().map(|username| { let password = configuration.pass.as_ref().map_or_else(|| { use rpassword::read_password; println!("Type password for WebApps server (user: {}): ", username); let pass = read_password().unwrap(); println!("OK, got it. Starting server..."); pass }, |pass| pass.to_owned()); (username.to_owned(), password) }); Ok(Some(setup_dapps_server( deps, configuration.dapps_path, configuration.extra_dapps, &addr, configuration.hosts, auth )?)) } pub use self::server::WebappServer; pub use self::server::setup_dapps_server; #[cfg(not(feature = "dapps"))] mod server { use super::Dependencies; use std::net::SocketAddr; pub struct WebappServer; pub fn setup_dapps_server( _deps: Dependencies, _dapps_path: PathBuf, _extra_dapps: Vec, _url: &SocketAddr, _allowed_hosts: Option>, _auth: Option<(String, String)>, ) -> Result { Err("Your Parity version has been compiled without WebApps support.".into()) } } #[cfg(feature = "dapps")] mod server { use super::Dependencies; use std::path::PathBuf; use std::sync::Arc; use std::net::SocketAddr; use std::io; use util::{Bytes, Address, U256}; use ethcore::transaction::{Transaction, Action}; use ethcore::client::{Client, BlockChainClient, BlockId}; use rpc_apis; use ethcore_rpc::is_major_importing; use hash_fetch::urlhint::ContractClient; pub use ethcore_dapps::Server as WebappServer; pub fn setup_dapps_server( deps: Dependencies, dapps_path: PathBuf, extra_dapps: Vec, url: &SocketAddr, allowed_hosts: Option>, auth: Option<(String, String)>, ) -> Result { use ethcore_dapps as dapps; let server = dapps::ServerBuilder::new( &dapps_path, Arc::new(Registrar { client: deps.client.clone() }), deps.remote.clone(), ); let sync = deps.sync.clone(); let client = deps.client.clone(); let signer = deps.signer.clone(); let server = server .fetch(deps.fetch.clone()) .sync_status(Arc::new(move || is_major_importing(Some(sync.status().state), client.queue_info()))) .web_proxy_tokens(Arc::new(move |token| signer.is_valid_web_proxy_access_token(&token))) .extra_dapps(&extra_dapps) .signer_address(deps.signer.address()); let server = rpc_apis::setup_rpc(server, deps.apis.clone(), rpc_apis::ApiSet::UnsafeContext); let start_result = match auth { None => { server.start_unsecured_http(url, allowed_hosts) }, Some((username, password)) => { server.start_basic_auth_http(url, allowed_hosts, &username, &password) }, }; match start_result { Err(dapps::ServerError::IoError(err)) => match err.kind() { io::ErrorKind::AddrInUse => Err(format!("WebApps address {} is already in use, make sure that another instance of an Ethereum client is not running or change the address using the --dapps-port and --dapps-interface options.", url)), _ => Err(format!("WebApps io error: {}", err)), }, Err(e) => Err(format!("WebApps error: {:?}", e)), Ok(server) => { server.set_panic_handler(move || { deps.panic_handler.notify_all("Panic in WebApp thread.".to_owned()); }); Ok(server) }, } } struct Registrar { client: Arc, } impl ContractClient for Registrar { fn registrar(&self) -> Result { self.client.additional_params().get("registrar") .ok_or_else(|| "Registrar not defined.".into()) .and_then(|registrar| { registrar.parse().map_err(|e| format!("Invalid registrar address: {:?}", e)) }) } fn call(&self, address: Address, data: Bytes) -> Result { let from = Address::default(); let transaction = Transaction { nonce: self.client.latest_nonce(&from), action: Action::Call(address), gas: U256::from(50_000_000), gas_price: U256::default(), value: U256::default(), data: data, }.fake_sign(from); self.client.call(&transaction, BlockId::Latest, Default::default()) .map_err(|e| format!("{:?}", e)) .map(|executed| { executed.output }) } } }