openethereum/parity/rpc.rs
2017-09-21 15:11:15 +02:00

362 lines
10 KiB
Rust

// Copyright 2015-2017 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 <http://www.gnu.org/licenses/>.
use std::io;
use std::sync::Arc;
use std::path::PathBuf;
use std::collections::HashSet;
use dapps;
use dir::default_data_path;
use helpers::{parity_ipc_path, replace_home};
use jsonrpc_core::MetaIoHandler;
use parity_reactor::TokioRemote;
use parity_rpc::informant::{RpcStats, Middleware};
use parity_rpc::{self as rpc, Metadata, DomainsValidation};
use rpc_apis::{self, ApiSet};
pub use parity_rpc::{IpcServer, HttpServer, RequestMiddleware};
pub use parity_rpc::ws::Server as WsServer;
pub use parity_rpc::informant::CpuPool;
pub const DAPPS_DOMAIN: &'static str = "web3.site";
#[derive(Debug, Clone, PartialEq)]
pub struct HttpConfiguration {
pub enabled: bool,
pub interface: String,
pub port: u16,
pub apis: ApiSet,
pub cors: Option<Vec<String>>,
pub hosts: Option<Vec<String>>,
pub server_threads: Option<usize>,
pub processing_threads: usize,
}
impl HttpConfiguration {
pub fn address(&self) -> Option<rpc::Host> {
address(self.enabled, &self.interface, self.port, &self.hosts)
}
}
impl Default for HttpConfiguration {
fn default() -> Self {
HttpConfiguration {
enabled: true,
interface: "127.0.0.1".into(),
port: 8545,
apis: ApiSet::UnsafeContext,
cors: None,
hosts: Some(Vec::new()),
server_threads: None,
processing_threads: 0,
}
}
}
#[derive(Debug, PartialEq, Clone)]
pub struct UiConfiguration {
pub enabled: bool,
pub interface: String,
pub port: u16,
pub hosts: Option<Vec<String>>,
}
impl UiConfiguration {
pub fn address(&self) -> Option<rpc::Host> {
address(self.enabled, &self.interface, self.port, &self.hosts)
}
pub fn redirection_address(&self) -> Option<(String, u16)> {
self.address().map(|host| {
let mut it = host.split(':');
let hostname: Option<String> = it.next().map(|s| s.to_owned());
let port: Option<u16> = it.next().and_then(|s| s.parse().ok());
(hostname.unwrap_or_else(|| "localhost".into()), port.unwrap_or(8180))
})
}
}
impl From<UiConfiguration> for HttpConfiguration {
fn from(conf: UiConfiguration) -> Self {
HttpConfiguration {
enabled: conf.enabled,
interface: conf.interface,
port: conf.port,
apis: rpc_apis::ApiSet::UnsafeContext,
cors: None,
hosts: conf.hosts,
server_threads: None,
processing_threads: 0,
}
}
}
impl Default for UiConfiguration {
fn default() -> Self {
UiConfiguration {
enabled: true && cfg!(feature = "ui-enabled"),
port: 8180,
interface: "127.0.0.1".into(),
hosts: Some(vec![]),
}
}
}
#[derive(Debug, PartialEq)]
pub struct IpcConfiguration {
pub enabled: bool,
pub socket_addr: String,
pub apis: ApiSet,
}
impl Default for IpcConfiguration {
fn default() -> Self {
IpcConfiguration {
enabled: true,
socket_addr: if cfg!(windows) {
r"\\.\pipe\jsonrpc.ipc".into()
} else {
let data_dir = ::dir::default_data_path();
parity_ipc_path(&data_dir, "$BASE/jsonrpc.ipc", 0)
},
apis: ApiSet::IpcContext,
}
}
}
#[derive(Debug, Clone, PartialEq)]
pub struct WsConfiguration {
pub enabled: bool,
pub interface: String,
pub port: u16,
pub apis: ApiSet,
pub origins: Option<Vec<String>>,
pub hosts: Option<Vec<String>>,
pub signer_path: PathBuf,
pub support_token_api: bool,
pub ui_address: Option<rpc::Host>,
}
impl Default for WsConfiguration {
fn default() -> Self {
let data_dir = default_data_path();
WsConfiguration {
enabled: true,
interface: "127.0.0.1".into(),
port: 8546,
apis: ApiSet::UnsafeContext,
origins: Some(vec!["chrome-extension://*".into(), "moz-extension://*".into()]),
hosts: Some(Vec::new()),
signer_path: replace_home(&data_dir, "$BASE/signer").into(),
support_token_api: true,
ui_address: Some("127.0.0.1:8180".into()),
}
}
}
impl WsConfiguration {
pub fn address(&self) -> Option<rpc::Host> {
address(self.enabled, &self.interface, self.port, &self.hosts)
}
}
fn address(enabled: bool, bind_iface: &str, bind_port: u16, hosts: &Option<Vec<String>>) -> Option<rpc::Host> {
if !enabled {
return None;
}
match *hosts {
Some(ref hosts) if !hosts.is_empty() => Some(hosts[0].clone().into()),
_ => Some(format!("{}:{}", bind_iface, bind_port).into()),
}
}
pub struct Dependencies<D: rpc_apis::Dependencies> {
pub apis: Arc<D>,
pub remote: TokioRemote,
pub stats: Arc<RpcStats>,
pub pool: Option<CpuPool>,
}
pub fn new_ws<D: rpc_apis::Dependencies>(
conf: WsConfiguration,
deps: &Dependencies<D>,
) -> Result<Option<WsServer>, String> {
if !conf.enabled {
return Ok(None);
}
let domain = DAPPS_DOMAIN;
let url = format!("{}:{}", conf.interface, conf.port);
let addr = url.parse().map_err(|_| format!("Invalid WebSockets listen host/port given: {}", url))?;
let full_handler = setup_apis(rpc_apis::ApiSet::SafeContext, deps);
let handler = {
let mut handler = MetaIoHandler::with_middleware((
rpc::WsDispatcher::new(full_handler),
Middleware::new(deps.stats.clone(), deps.apis.activity_notifier(), deps.pool.clone())
));
let apis = conf.apis.list_apis();
deps.apis.extend_with_set(&mut handler, &apis);
handler
};
let remote = deps.remote.clone();
let ui_address = conf.ui_address.clone();
let allowed_origins = into_domains(with_domain(conf.origins, domain, &ui_address));
let allowed_hosts = into_domains(with_domain(conf.hosts, domain, &Some(url.clone().into())));
let signer_path;
let path = match conf.support_token_api && conf.ui_address.is_some() {
true => {
signer_path = ::signer::codes_path(&conf.signer_path);
Some(signer_path.as_path())
},
false => None
};
let start_result = rpc::start_ws(
&addr,
handler,
remote.clone(),
allowed_origins,
allowed_hosts,
rpc::WsExtractor::new(path.clone()),
rpc::WsExtractor::new(path.clone()),
rpc::WsStats::new(deps.stats.clone()),
);
match start_result {
Ok(server) => Ok(Some(server)),
Err(rpc::ws::Error::Io(ref err)) if err.kind() == io::ErrorKind::AddrInUse => Err(
format!("WebSockets address {} is already in use, make sure that another instance of an Ethereum client is not running or change the address using the --ws-port and --ws-interface options.", url)
),
Err(e) => Err(format!("WebSockets error: {:?}", e)),
}
}
pub fn new_http<D: rpc_apis::Dependencies>(
id: &str,
options: &str,
conf: HttpConfiguration,
deps: &Dependencies<D>,
middleware: Option<dapps::Middleware>,
) -> Result<Option<HttpServer>, String> {
if !conf.enabled {
return Ok(None);
}
let domain = DAPPS_DOMAIN;
let url = format!("{}:{}", conf.interface, conf.port);
let addr = url.parse().map_err(|_| format!("Invalid {} listen host/port given: {}", id, url))?;
let handler = setup_apis(conf.apis, deps);
let remote = deps.remote.clone();
let cors_domains = into_domains(conf.cors);
let allowed_hosts = into_domains(with_domain(conf.hosts, domain, &Some(url.clone().into())));
let start_result = rpc::start_http(
&addr,
cors_domains,
allowed_hosts,
handler,
remote,
rpc::RpcExtractor,
match (conf.server_threads, middleware) {
(Some(threads), None) => rpc::HttpSettings::Threads(threads),
(None, middleware) => rpc::HttpSettings::Dapps(middleware),
(Some(_), Some(_)) => {
return Err("Dapps and fast multi-threaded RPC server cannot be enabled at the same time.".into())
},
}
);
match start_result {
Ok(server) => Ok(Some(server)),
Err(rpc::HttpServerError::Io(ref err)) if err.kind() == io::ErrorKind::AddrInUse => Err(
format!("{} address {} is already in use, make sure that another instance of an Ethereum client is not running or change the address using the --{}-port and --{}-interface options.", id, url, options, options)
),
Err(e) => Err(format!("{} error: {:?}", id, e)),
}
}
pub fn new_ipc<D: rpc_apis::Dependencies>(
conf: IpcConfiguration,
dependencies: &Dependencies<D>
) -> Result<Option<IpcServer>, String> {
if !conf.enabled {
return Ok(None);
}
let handler = setup_apis(conf.apis, dependencies);
let remote = dependencies.remote.clone();
match rpc::start_ipc(&conf.socket_addr, handler, remote, rpc::RpcExtractor) {
Ok(server) => Ok(Some(server)),
Err(io_error) => Err(format!("IPC error: {}", io_error)),
}
}
fn into_domains<T: From<String>>(items: Option<Vec<String>>) -> DomainsValidation<T> {
items.map(|vals| vals.into_iter().map(T::from).collect()).into()
}
fn with_domain(items: Option<Vec<String>>, domain: &str, address: &Option<rpc::Host>) -> Option<Vec<String>> {
fn extract_port(s: &str) -> Option<u16> {
s.split(':').nth(1).and_then(|s| s.parse().ok())
}
items.map(move |items| {
let mut items = items.into_iter().collect::<HashSet<_>>();
if let Some(host) = address.clone() {
items.insert(host.to_string());
items.insert(host.replace("127.0.0.1", "localhost"));
items.insert(format!("http://*.{}", domain)); //proxypac
if let Some(port) = extract_port(&*host) {
items.insert(format!("http://*.{}:{}", domain, port));
}
}
items.into_iter().collect()
})
}
fn setup_apis<D>(apis: ApiSet, deps: &Dependencies<D>) -> MetaIoHandler<Metadata, Middleware<D::Notifier>>
where D: rpc_apis::Dependencies
{
let mut handler = MetaIoHandler::with_middleware(
Middleware::new(deps.stats.clone(), deps.apis.activity_notifier(), deps.pool.clone())
);
let apis = apis.list_apis();
deps.apis.extend_with_set(&mut handler, &apis);
handler
}
#[cfg(test)]
mod tests {
use super::address;
#[test]
fn should_return_proper_address() {
assert_eq!(address(false, "localhost", 8180, &None), None);
assert_eq!(address(true, "localhost", 8180, &None), Some("localhost:8180".into()));
assert_eq!(address(true, "localhost", 8180, &Some(vec!["host:443".into()])), Some("host:443".into()));
assert_eq!(address(true, "localhost", 8180, &Some(vec!["host".into()])), Some("host".into()));
}
}