openethereum/parity/signer.rs
2016-12-12 16:51:07 +01:00

143 lines
4.2 KiB
Rust

// 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 <http://www.gnu.org/licenses/>.
use std::io;
use std::sync::Arc;
use std::path::PathBuf;
use ansi_term::Colour;
use io::{ForwardPanic, PanicHandler};
use util::path::restrict_permissions_owner;
use rpc_apis;
use ethcore_signer as signer;
use helpers::replace_home;
pub use ethcore_signer::Server as SignerServer;
const CODES_FILENAME: &'static str = "authcodes";
#[derive(Debug, PartialEq, Clone)]
pub struct Configuration {
pub enabled: bool,
pub port: u16,
pub interface: String,
pub signer_path: String,
pub skip_origin_validation: bool,
}
impl Default for Configuration {
fn default() -> Self {
Configuration {
enabled: true,
port: 8180,
interface: "127.0.0.1".into(),
signer_path: replace_home("", "$HOME/.parity/signer"),
skip_origin_validation: false,
}
}
}
pub struct Dependencies {
pub panic_handler: Arc<PanicHandler>,
pub apis: Arc<rpc_apis::Dependencies>,
}
pub struct NewToken {
pub token: String,
pub url: String,
pub message: String,
}
pub fn start(conf: Configuration, deps: Dependencies) -> Result<Option<SignerServer>, String> {
if !conf.enabled {
Ok(None)
} else {
Ok(Some(try!(do_start(conf, deps))))
}
}
fn codes_path(path: String) -> PathBuf {
let mut p = PathBuf::from(path);
p.push(CODES_FILENAME);
let _ = restrict_permissions_owner(&p);
p
}
pub fn execute(cmd: Configuration) -> Result<String, String> {
Ok(try!(generate_token_and_url(&cmd)).message)
}
pub fn generate_token_and_url(conf: &Configuration) -> Result<NewToken, String> {
let code = try!(generate_new_token(conf.signer_path.clone()).map_err(|err| format!("Error generating token: {:?}", err)));
let auth_url = format!("http://{}:{}/#/auth?token={}", conf.interface, conf.port, code);
// And print in to the console
Ok(NewToken {
token: code.clone(),
url: auth_url.clone(),
message: format!(
r#"
Open: {}
to authorize your browser.
Or use the generated token:
{}"#,
Colour::White.bold().paint(auth_url),
code
)
})
}
pub fn generate_new_token(path: String) -> io::Result<String> {
let path = codes_path(path);
let mut codes = try!(signer::AuthCodes::from_file(&path));
codes.clear_garbage();
let code = try!(codes.generate_new());
try!(codes.to_file(&path));
trace!("New key code created: {}", Colour::White.bold().paint(&code[..]));
Ok(code)
}
fn do_start(conf: Configuration, deps: Dependencies) -> Result<SignerServer, String> {
let addr = try!(format!("{}:{}", conf.interface, conf.port)
.parse()
.map_err(|_| format!("Invalid port specified: {}", conf.port)));
let start_result = {
let server = signer::ServerBuilder::new(
deps.apis.signer_service.queue(),
codes_path(conf.signer_path),
);
if conf.skip_origin_validation {
warn!("{}", Colour::Red.bold().paint("*** INSECURE *** Running Trusted Signer with no origin validation."));
info!("If you do not intend this, exit now.");
}
let server = server.skip_origin_validation(conf.skip_origin_validation);
let server = rpc_apis::setup_rpc(server, deps.apis, rpc_apis::ApiSet::SafeContext);
server.start(addr)
};
match start_result {
Err(signer::ServerError::IoError(err)) => match err.kind() {
io::ErrorKind::AddrInUse => Err(format!("Trusted UI address {} is already in use, make sure that another instance of an Ethereum client is not running or change the address using the --ui-port and --ui-interface options.", addr)),
_ => Err(format!("Trusted Signer io error: {}", err)),
},
Err(e) => Err(format!("Trusted Signer Error: {:?}", e)),
Ok(server) => {
deps.panic_handler.forward_from(&server);
Ok(server)
},
}
}