openethereum/ethstore/src/import.rs

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// 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::collections::HashSet;
use std::path::Path;
use std::fs;
use ethkey::Address;
use accounts_dir::{KeyDirectory, RootDiskDirectory, DiskKeyFileManager, KeyFileManager};
use dir;
use Error;
/// Import an account from a file.
pub fn import_account(path: &Path, dst: &KeyDirectory) -> Result<Address, Error> {
let key_manager = DiskKeyFileManager;
let existing_accounts = dst.load()?.into_iter().map(|a| a.address).collect::<HashSet<_>>();
let filename = path.file_name().and_then(|n| n.to_str()).map(|f| f.to_owned());
let account = fs::File::open(&path)
.map_err(Into::into)
.and_then(|file| key_manager.read(filename, file))?;
let address = account.address.clone();
if !existing_accounts.contains(&address) {
dst.insert(account)?;
}
Ok(address)
}
/// Import all accounts from one directory to the other.
pub fn import_accounts(src: &KeyDirectory, dst: &KeyDirectory) -> Result<Vec<Address>, Error> {
let accounts = src.load()?;
let existing_accounts = dst.load()?.into_iter().map(|a| a.address).collect::<HashSet<_>>();
accounts.into_iter()
.filter(|a| !existing_accounts.contains(&a.address))
.map(|a| {
let address = a.address.clone();
dst.insert(a)?;
Ok(address)
}).collect()
}
/// Provide a `HashSet` of all accounts available for import from the Geth keystore.
pub fn read_geth_accounts(testnet: bool) -> Vec<Address> {
RootDiskDirectory::at(dir::geth(testnet))
.load()
.map(|d| d.into_iter().map(|a| a.address).collect())
.unwrap_or_else(|_| Vec::new())
}
/// Import specific `desired` accounts from the Geth keystore into `dst`.
pub fn import_geth_accounts(dst: &KeyDirectory, desired: HashSet<Address>, testnet: bool) -> Result<Vec<Address>, Error> {
let src = RootDiskDirectory::at(dir::geth(testnet));
let accounts = src.load()?;
let existing_accounts = dst.load()?.into_iter().map(|a| a.address).collect::<HashSet<_>>();
accounts.into_iter()
.filter(|a| !existing_accounts.contains(&a.address))
.filter(|a| desired.contains(&a.address))
.map(|a| {
let address = a.address.clone();
dst.insert(a)?;
Ok(address)
}).collect()
}