openethereum/whisper/cli/src/main.rs

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// Copyright 2015-2018 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/>.
//! Whisper command line interface
//!
//! Spawns an Ethereum network instance and attaches the Whisper protocol RPCs to it.
//!
#![warn(missing_docs)]
#![cfg_attr(feature = "cargo-clippy", deny(clippy, clippy_pedantic))]
extern crate docopt;
extern crate ethcore_network_devp2p as devp2p;
extern crate ethcore_network as net;
extern crate parity_whisper as whisper;
extern crate serde;
extern crate panic_hook;
extern crate jsonrpc_core;
extern crate jsonrpc_pubsub;
extern crate jsonrpc_http_server;
extern crate ethcore_logger as log;
#[macro_use]
extern crate log as rlog;
#[macro_use]
extern crate serde_derive;
use docopt::Docopt;
use std::{fmt, io, process, env, sync::Arc};
use jsonrpc_core::{Metadata, MetaIoHandler};
use jsonrpc_pubsub::{PubSubMetadata, Session};
use jsonrpc_http_server::{AccessControlAllowOrigin, DomainsValidation};
const POOL_UNIT: usize = 1024 * 1024;
const USAGE: &'static str = r#"
Parity Whisper-v2 CLI.
Copyright 2015-2018 Parity Technologies (UK) Ltd.
Usage:
whisper [options]
whisper [-h | --help]
Options:
--whisper-pool-size SIZE Specify Whisper pool size [default: 10].
-p, --port PORT Specify which RPC port to use [default: 8545].
-a, --address ADDRESS Specify which address to use [default: 127.0.0.1].
-l, --log LEVEL Specify the logging level. Must conform to the same format as RUST_LOG [default: Error].
-h, --help Display this message and exit.
"#;
#[derive(Clone, Default)]
struct Meta;
impl Metadata for Meta {}
impl PubSubMetadata for Meta {
fn session(&self) -> Option<Arc<Session>> {
None
}
}
#[derive(Debug, Deserialize)]
struct Args {
flag_whisper_pool_size: usize,
flag_port: String,
flag_address: String,
flag_log: String,
}
struct WhisperPoolHandle {
/// Pool handle.
handle: Arc<whisper::net::Network<Arc<whisper::rpc::FilterManager>>>,
/// Network manager.
net: Arc<devp2p::NetworkService>,
}
impl whisper::rpc::PoolHandle for WhisperPoolHandle {
fn relay(&self, message: whisper::message::Message) -> bool {
let mut res = false;
let mut message = Some(message);
self.with_proto_context(whisper::net::PROTOCOL_ID, &mut |ctx| {
if let Some(message) = message.take() {
res = self.handle.post_message(message, ctx);
}
});
res
}
fn pool_status(&self) -> whisper::net::PoolStatus {
self.handle.pool_status()
}
}
impl WhisperPoolHandle {
fn with_proto_context(&self, proto: net::ProtocolId, f: &mut FnMut(&net::NetworkContext)) {
self.net.with_context_eval(proto, f);
}
}
struct RpcFactory {
handle: Arc<whisper::Network<Arc<whisper::rpc::FilterManager>>>,
manager: Arc<whisper::rpc::FilterManager>,
}
impl RpcFactory {
fn make_handler(&self, net: Arc<devp2p::NetworkService>) -> whisper::rpc::WhisperClient<WhisperPoolHandle, Meta> {
let whisper_pool_handle = WhisperPoolHandle { handle: self.handle.clone(), net: net };
whisper::rpc::WhisperClient::new(whisper_pool_handle, self.manager.clone())
}
}
#[derive(Debug)]
enum Error {
Docopt(docopt::Error),
Io(io::Error),
JsonRpc(jsonrpc_core::Error),
Network(net::Error),
SockAddr(std::net::AddrParseError),
Logger(String),
}
impl From<std::net::AddrParseError> for Error {
fn from(err: std::net::AddrParseError) -> Self {
Error::SockAddr(err)
}
}
impl From<net::Error> for Error {
fn from(err: net::Error) -> Self {
Error::Network(err)
}
}
impl From<docopt::Error> for Error {
fn from(err: docopt::Error) -> Self {
Error::Docopt(err)
}
}
impl From<io::Error> for Error {
fn from(err: io::Error) -> Self {
Error::Io(err)
}
}
impl From<jsonrpc_core::Error> for Error {
fn from(err: jsonrpc_core::Error) -> Self {
Error::JsonRpc(err)
}
}
impl From<String> for Error {
fn from(err: String) -> Self {
Error::Logger(err)
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
match *self {
Error::SockAddr(ref e) => write!(f, "{}", e),
Error::Docopt(ref e) => write!(f, "{}", e),
Error::Io(ref e) => write!(f, "{}", e),
Error::JsonRpc(ref e) => write!(f, "{:?}", e),
Error::Network(ref e) => write!(f, "{}", e),
Error::Logger(ref e) => write!(f, "{}", e),
}
}
}
fn main() {
panic_hook::set_abort();
match execute(env::args()) {
Ok(_) => {
println!("whisper-cli terminated");
process::exit(1);
},
Err(Error::Docopt(ref e)) => e.exit(),
Err(err) => {
println!("{}", err);
process::exit(1);
}
}
}
fn execute<S, I>(command: I) -> Result<(), Error> where I: IntoIterator<Item=S>, S: AsRef<str> {
// Parse arguments
let args: Args = Docopt::new(USAGE).and_then(|d| d.argv(command).deserialize())?;
let pool_size = args.flag_whisper_pool_size * POOL_UNIT;
let url = format!("{}:{}", args.flag_address, args.flag_port);
initialize_logger(args.flag_log)?;
info!(target: "whisper-cli", "start");
// Filter manager that will dispatch `decryption tasks`
let manager = Arc::new(whisper::rpc::FilterManager::new()?);
// Whisper protocol network handler
let whisper_network_handler = Arc::new(whisper::net::Network::new(pool_size, manager.clone()));
// Create network service
let network = devp2p::NetworkService::new(net::NetworkConfiguration::new_local(), None)?;
// Start network service
network.start().map_err(|(err, _)| err)?;
// Attach whisper protocol to the network service
network.register_protocol(whisper_network_handler.clone(), whisper::net::PROTOCOL_ID,
whisper::net::SUPPORTED_VERSIONS)?;
network.register_protocol(Arc::new(whisper::net::ParityExtensions), whisper::net::PARITY_PROTOCOL_ID,
whisper::net::SUPPORTED_VERSIONS)?;
// Request handler
let mut io = MetaIoHandler::default();
// Shared network service
let shared_network = Arc::new(network);
// Pool handler
let whisper_factory = RpcFactory { handle: whisper_network_handler, manager: manager };
io.extend_with(whisper::rpc::Whisper::to_delegate(whisper_factory.make_handler(shared_network.clone())));
io.extend_with(whisper::rpc::WhisperPubSub::to_delegate(whisper_factory.make_handler(shared_network.clone())));
let server = jsonrpc_http_server::ServerBuilder::new(io)
.cors(DomainsValidation::AllowOnly(vec![AccessControlAllowOrigin::Null]))
.start_http(&url.parse()?)?;
server.wait();
// This will never return if the http server runs without errors
Ok(())
}
fn initialize_logger(log_level: String) -> Result<(), String> {
let mut l = log::Config::default();
l.mode = Some(log_level);
log::setup_log(&l)?;
Ok(())
}
#[cfg(test)]
mod tests {
use super::execute;
#[test]
fn invalid_argument() {
let command = vec!["whisper", "--foo=12"]
.into_iter()
.map(Into::into)
.collect::<Vec<String>>();
assert!(execute(command).is_err());
}
#[test]
#[ignore]
fn privileged_port() {
let command = vec!["whisper", "--port=3"]
.into_iter()
.map(Into::into)
.collect::<Vec<String>>();
assert!(execute(command).is_err());
}
#[test]
fn invalid_ip_address() {
let command = vec!["whisper", "--address=x.x.x.x"]
.into_iter()
.map(Into::into)
.collect::<Vec<String>>();
assert!(execute(command).is_err());
}
#[test]
fn invalid_whisper_pool_size() {
let command = vec!["whisper", "--whisper-pool-size=-100000000000000000000000000000000000000"]
.into_iter()
.map(Into::into)
.collect::<Vec<String>>();
assert!(execute(command).is_err());
}
}