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mod stores;
use self::stores::{AddressBook, DappsSettingsStore, NewDappsPolicy};
use std::fmt;
use std::collections::HashMap;
use std::time::{Instant, Duration};
use util::RwLock;
use ethstore::{SimpleSecretStore, SecretStore, Error as SSError, EthStore, EthMultiStore,
random_string, SecretVaultRef, StoreAccountRef};
use ethstore::dir::MemoryDirectory;
use ethstore::ethkey::{Address, Message, Public, Secret, Random, Generator};
use ethjson::misc::AccountMeta;
pub use ethstore::ethkey::Signature;
#[derive(Clone)]
enum Unlock {
Temp,
Perm,
Timed(Instant),
}
#[derive(Clone)]
struct AccountData {
unlock: Unlock,
password: String,
}
#[derive(Debug)]
pub enum SignError {
NotUnlocked,
SStore(SSError)
}
impl fmt::Display for SignError {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
match *self {
SignError::NotUnlocked => write!(f, "Account is locked"),
SignError::SStore(ref e) => write!(f, "{}", e),
}
}
}
impl From<SSError> for SignError {
fn from(e: SSError) -> Self {
SignError::SStore(e)
}
}
pub type Error = SSError;
#[derive(Default, Debug, Clone, Eq, PartialEq, Hash, Ord, PartialOrd)]
pub struct DappId(String);
impl From<DappId> for String {
fn from(id: DappId) -> String { id.0 }
}
impl From<String> for DappId {
fn from(id: String) -> DappId { DappId(id) }
}
impl<'a> From<&'a str> for DappId {
fn from(id: &'a str) -> DappId { DappId(id.to_owned()) }
}
fn transient_sstore() -> EthMultiStore {
EthMultiStore::open(Box::new(MemoryDirectory::default())).expect("MemoryDirectory load always succeeds; qed")
}
type AccountToken = String;
pub struct AccountProvider {
unlocked: RwLock<HashMap<StoreAccountRef, AccountData>>,
address_book: RwLock<AddressBook>,
dapps_settings: RwLock<DappsSettingsStore>,
sstore: Box<SecretStore>,
transient_sstore: EthMultiStore,
}
impl AccountProvider {
pub fn new(sstore: Box<SecretStore>) -> Self {
AccountProvider {
unlocked: RwLock::new(HashMap::new()),
address_book: RwLock::new(AddressBook::new(sstore.local_path().into())),
dapps_settings: RwLock::new(DappsSettingsStore::new(sstore.local_path().into())),
sstore: sstore,
transient_sstore: transient_sstore(),
}
}
pub fn transient_provider() -> Self {
AccountProvider {
unlocked: RwLock::new(HashMap::new()),
address_book: RwLock::new(AddressBook::transient()),
dapps_settings: RwLock::new(DappsSettingsStore::transient()),
sstore: Box::new(EthStore::open(Box::new(MemoryDirectory::default())).expect("MemoryDirectory load always succeeds; qed")),
transient_sstore: transient_sstore(),
}
}
pub fn new_account(&self, password: &str) -> Result<Address, Error> {
self.new_account_and_public(password).map(|d| d.0)
}
pub fn new_account_and_public(&self, password: &str) -> Result<(Address, Public), Error> {
let acc = Random.generate().expect("secp context has generation capabilities; qed");
let public = acc.public().clone();
let secret = acc.secret().clone();
let account = self.sstore.insert_account(SecretVaultRef::Root, secret, password)?;
Ok((account.address, public))
}
pub fn insert_account(&self, secret: Secret, password: &str) -> Result<Address, Error> {
let account = self.sstore.insert_account(SecretVaultRef::Root, secret, password)?;
Ok(account.address)
}
pub fn import_presale(&self, presale_json: &[u8], password: &str) -> Result<Address, Error> {
let account = self.sstore.import_presale(SecretVaultRef::Root, presale_json, password)?;
Ok(Address::from(account.address).into())
}
pub fn import_wallet(&self, json: &[u8], password: &str) -> Result<Address, Error> {
let account = self.sstore.import_wallet(SecretVaultRef::Root, json, password)?;
Ok(Address::from(account.address).into())
}
pub fn has_account(&self, address: Address) -> Result<bool, Error> {
Ok(self.accounts()?.iter().any(|&a| a == address))
}
pub fn accounts(&self) -> Result<Vec<Address>, Error> {
let accounts = self.sstore.accounts()?;
Ok(accounts.into_iter().map(|a| a.address).collect())
}
pub fn set_new_dapps_whitelist(&self, accounts: Option<Vec<Address>>) -> Result<(), Error> {
self.dapps_settings.write().set_policy(match accounts {
None => NewDappsPolicy::AllAccounts,
Some(accounts) => NewDappsPolicy::Whitelist(accounts),
});
Ok(())
}
pub fn new_dapps_whitelist(&self) -> Result<Option<Vec<Address>>, Error> {
Ok(match self.dapps_settings.read().policy() {
NewDappsPolicy::AllAccounts => None,
NewDappsPolicy::Whitelist(accounts) => Some(accounts),
})
}
pub fn recent_dapps(&self) -> Result<HashMap<DappId, u64>, Error> {
Ok(self.dapps_settings.read().recent_dapps())
}
pub fn note_dapp_used(&self, dapp: DappId) -> Result<(), Error> {
let mut dapps = self.dapps_settings.write();
dapps.mark_dapp_used(dapp.clone());
Ok(())
}
pub fn dapps_addresses(&self, dapp: DappId) -> Result<Vec<Address>, Error> {
let dapps = self.dapps_settings.read();
let accounts = dapps.settings().get(&dapp).map(|settings| settings.accounts.clone());
match accounts {
Some(accounts) => Ok(accounts),
None => match dapps.policy() {
NewDappsPolicy::AllAccounts => self.accounts(),
NewDappsPolicy::Whitelist(accounts) => Ok(accounts),
}
}
}
pub fn default_address(&self, dapp: DappId) -> Result<Address, Error> {
self.dapps_addresses(dapp)?
.get(0)
.cloned()
.ok_or(SSError::InvalidAccount)
}
pub fn set_dapps_addresses(&self, dapp: DappId, addresses: Vec<Address>) -> Result<(), Error> {
self.dapps_settings.write().set_accounts(dapp, addresses);
Ok(())
}
pub fn addresses_info(&self) -> Result<HashMap<Address, AccountMeta>, Error> {
Ok(self.address_book.read().get())
}
pub fn set_address_name(&self, account: Address, name: String) -> Result<(), Error> {
Ok(self.address_book.write().set_name(account, name))
}
pub fn set_address_meta(&self, account: Address, meta: String) -> Result<(), Error> {
Ok(self.address_book.write().set_meta(account, meta))
}
pub fn remove_address(&self, addr: Address) -> Result<(), Error> {
Ok(self.address_book.write().remove(addr))
}
pub fn accounts_info(&self) -> Result<HashMap<Address, AccountMeta>, Error> {
let r: HashMap<Address, AccountMeta> = self.sstore.accounts()?
.into_iter()
.map(|a| (a.address.clone(), self.account_meta(a.address).ok().unwrap_or_default()))
.collect();
Ok(r)
}
pub fn account_meta(&self, address: Address) -> Result<AccountMeta, Error> {
let account = StoreAccountRef::root(address);
Ok(AccountMeta {
name: self.sstore.name(&account)?,
meta: self.sstore.meta(&account)?,
uuid: self.sstore.uuid(&account).ok().map(Into::into),
})
}
pub fn set_account_name(&self, address: Address, name: String) -> Result<(), Error> {
self.sstore.set_name(&StoreAccountRef::root(address), name)?;
Ok(())
}
pub fn set_account_meta(&self, address: Address, meta: String) -> Result<(), Error> {
self.sstore.set_meta(&StoreAccountRef::root(address), meta)?;
Ok(())
}
pub fn test_password(&self, address: &Address, password: &str) -> Result<bool, Error> {
self.sstore.test_password(&StoreAccountRef::root(address.clone()), password)
.map_err(Into::into)
}
pub fn kill_account(&self, address: &Address, password: &str) -> Result<(), Error> {
self.sstore.remove_account(&StoreAccountRef::root(address.clone()), &password)?;
Ok(())
}
pub fn change_password(&self, account: &Address, password: String, new_password: String) -> Result<(), Error> {
self.sstore.change_password(&StoreAccountRef::root(account.clone()), &password, &new_password)
}
fn unlock_account(&self, address: Address, password: String, unlock: Unlock) -> Result<(), Error> {
let account = StoreAccountRef::root(address);
let _ = self.sstore.sign(&account, &password, &Default::default())?;
let mut unlocked = self.unlocked.write();
if let Some(data) = unlocked.get(&account) {
if let Unlock::Perm = data.unlock {
return Ok(())
}
}
let data = AccountData {
unlock: unlock,
password: password,
};
unlocked.insert(account, data);
Ok(())
}
fn password(&self, account: &StoreAccountRef) -> Result<String, SignError> {
let mut unlocked = self.unlocked.write();
let data = unlocked.get(account).ok_or(SignError::NotUnlocked)?.clone();
if let Unlock::Temp = data.unlock {
unlocked.remove(account).expect("data exists: so key must exist: qed");
}
if let Unlock::Timed(ref end) = data.unlock {
if Instant::now() > *end {
unlocked.remove(account).expect("data exists: so key must exist: qed");
return Err(SignError::NotUnlocked);
}
}
Ok(data.password.clone())
}
pub fn unlock_account_permanently(&self, account: Address, password: String) -> Result<(), Error> {
self.unlock_account(account, password, Unlock::Perm)
}
pub fn unlock_account_temporarily(&self, account: Address, password: String) -> Result<(), Error> {
self.unlock_account(account, password, Unlock::Temp)
}
pub fn unlock_account_timed(&self, account: Address, password: String, duration_ms: u32) -> Result<(), Error> {
self.unlock_account(account, password, Unlock::Timed(Instant::now() + Duration::from_millis(duration_ms as u64)))
}
pub fn is_unlocked(&self, address: Address) -> bool {
let unlocked = self.unlocked.read();
let account = StoreAccountRef::root(address);
unlocked.get(&account).is_some()
}
pub fn sign(&self, address: Address, password: Option<String>, message: Message) -> Result<Signature, SignError> {
let account = StoreAccountRef::root(address);
let password = password.map(Ok).unwrap_or_else(|| self.password(&account))?;
Ok(self.sstore.sign(&account, &password, &message)?)
}
pub fn sign_with_token(&self, address: Address, token: AccountToken, message: Message) -> Result<(Signature, AccountToken), SignError> {
let account = StoreAccountRef::root(address);
let is_std_password = self.sstore.test_password(&account, &token)?;
let new_token = random_string(16);
let signature = if is_std_password {
self.sstore.copy_account(&self.transient_sstore, SecretVaultRef::Root, &account, &token, &new_token)?;
self.sstore.sign(&account, &token, &message)?
} else {
self.transient_sstore.change_password(&account, &token, &new_token)?;
self.transient_sstore.sign(&account, &new_token, &message)?
};
Ok((signature, new_token))
}
pub fn decrypt_with_token(&self, address: Address, token: AccountToken, shared_mac: &[u8], message: &[u8])
-> Result<(Vec<u8>, AccountToken), SignError>
{
let account = StoreAccountRef::root(address);
let is_std_password = self.sstore.test_password(&account, &token)?;
let new_token = random_string(16);
let message = if is_std_password {
self.sstore.copy_account(&self.transient_sstore, SecretVaultRef::Root, &account, &token, &new_token)?;
self.sstore.decrypt(&account, &token, shared_mac, message)?
} else {
self.transient_sstore.change_password(&account, &token, &new_token)?;
self.transient_sstore.decrypt(&account, &token, shared_mac, message)?
};
Ok((message, new_token))
}
pub fn decrypt(&self, address: Address, password: Option<String>, shared_mac: &[u8], message: &[u8]) -> Result<Vec<u8>, SignError> {
let account = StoreAccountRef::root(address);
let password = password.map(Ok).unwrap_or_else(|| self.password(&account))?;
Ok(self.sstore.decrypt(&account, &password, shared_mac, message)?)
}
pub fn list_geth_accounts(&self, testnet: bool) -> Vec<Address> {
self.sstore.list_geth_accounts(testnet).into_iter().map(|a| Address::from(a).into()).collect()
}
pub fn import_geth_accounts(&self, desired: Vec<Address>, testnet: bool) -> Result<Vec<Address>, Error> {
self.sstore.import_geth_accounts(SecretVaultRef::Root, desired, testnet)
.map(|a| a.into_iter().map(|a| a.address).collect())
.map_err(Into::into)
}
}
#[cfg(test)]
mod tests {
use super::{AccountProvider, Unlock, DappId};
use std::time::Instant;
use ethstore::ethkey::{Generator, Random};
use ethstore::StoreAccountRef;
#[test]
fn unlock_account_temp() {
let kp = Random.generate().unwrap();
let ap = AccountProvider::transient_provider();
assert!(ap.insert_account(kp.secret().clone(), "test").is_ok());
assert!(ap.unlock_account_temporarily(kp.address(), "test1".into()).is_err());
assert!(ap.unlock_account_temporarily(kp.address(), "test".into()).is_ok());
assert!(ap.sign(kp.address(), None, Default::default()).is_ok());
assert!(ap.sign(kp.address(), None, Default::default()).is_err());
}
#[test]
fn unlock_account_perm() {
let kp = Random.generate().unwrap();
let ap = AccountProvider::transient_provider();
assert!(ap.insert_account(kp.secret().clone(), "test").is_ok());
assert!(ap.unlock_account_permanently(kp.address(), "test1".into()).is_err());
assert!(ap.unlock_account_permanently(kp.address(), "test".into()).is_ok());
assert!(ap.sign(kp.address(), None, Default::default()).is_ok());
assert!(ap.sign(kp.address(), None, Default::default()).is_ok());
assert!(ap.unlock_account_temporarily(kp.address(), "test".into()).is_ok());
assert!(ap.sign(kp.address(), None, Default::default()).is_ok());
assert!(ap.sign(kp.address(), None, Default::default()).is_ok());
}
#[test]
fn unlock_account_timer() {
let kp = Random.generate().unwrap();
let ap = AccountProvider::transient_provider();
assert!(ap.insert_account(kp.secret().clone(), "test").is_ok());
assert!(ap.unlock_account_timed(kp.address(), "test1".into(), 60000).is_err());
assert!(ap.unlock_account_timed(kp.address(), "test".into(), 60000).is_ok());
assert!(ap.sign(kp.address(), None, Default::default()).is_ok());
ap.unlocked.write().get_mut(&StoreAccountRef::root(kp.address())).unwrap().unlock = Unlock::Timed(Instant::now());
assert!(ap.sign(kp.address(), None, Default::default()).is_err());
}
#[test]
fn should_sign_and_return_token() {
let kp = Random.generate().unwrap();
let ap = AccountProvider::transient_provider();
assert!(ap.insert_account(kp.secret().clone(), "test").is_ok());
let (_signature, token) = ap.sign_with_token(kp.address(), "test".into(), Default::default()).unwrap();
ap.sign_with_token(kp.address(), token.clone(), Default::default())
.expect("First usage of token should be correct.");
assert!(ap.sign_with_token(kp.address(), token, Default::default()).is_err(), "Second usage of the same token should fail.");
}
#[test]
fn should_set_dapps_addresses() {
let ap = AccountProvider::transient_provider();
let app = DappId("app1".into());
ap.set_new_dapps_whitelist(None).unwrap();
ap.set_dapps_addresses(app.clone(), vec![1.into(), 2.into()]).unwrap();
assert_eq!(ap.dapps_addresses(app.clone()).unwrap(), vec![1.into(), 2.into()]);
}
#[test]
fn should_set_dapps_policy() {
let ap = AccountProvider::transient_provider();
let address = ap.new_account("test").unwrap();
ap.set_new_dapps_whitelist(Some(vec![])).unwrap();
assert_eq!(ap.dapps_addresses("app1".into()).unwrap(), vec![]);
ap.set_new_dapps_whitelist(None).unwrap();
assert_eq!(ap.dapps_addresses("app1".into()).unwrap(), vec![address]);
ap.set_new_dapps_whitelist(Some(vec![1.into()])).unwrap();
assert_eq!(ap.dapps_addresses("app1".into()).unwrap(), vec![1.into()]);
}
}