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use super::pw_generator::{generate_chars, generate_words}; use crate::api::{Event, EventHandler, EventHub, EventSubscription, PasswordGeneratorParam}; use crate::clipboard::Clipboard; use crate::secrets_store::{open_secrets_store, SecretsStore}; use crate::service::config::{read_config, write_config, Config}; use crate::service::error::{ServiceError, ServiceResult}; #[cfg(unix)] use crate::service::secrets_provider::SecretsProvider; use crate::service::{ClipboardControl, StoreConfig, TrustlessService}; use chrono::Utc; use log::{error, info}; use rand::{distributions, thread_rng, Rng}; use std::collections::HashMap; use std::sync::{Arc, RwLock}; use std::time::Duration; enum ClipboardHolder { Empty, Providing(Clipboard), } impl ClipboardControl for ClipboardHolder { fn is_done(&self) -> ServiceResult<bool> { match self { ClipboardHolder::Empty => Ok(true), ClipboardHolder::Providing(clipboard) => Ok(!clipboard.is_open()), } } fn currently_providing(&self) -> ServiceResult<Option<String>> { match self { ClipboardHolder::Empty => Ok(None), ClipboardHolder::Providing(clipboard) => Ok(clipboard.currently_providing()), } } fn provide_next(&self) -> ServiceResult<()> { if let ClipboardHolder::Providing(clipboard) = &self { clipboard.provide_next(); } Ok(()) } fn destroy(&self) -> ServiceResult<()> { if let ClipboardHolder::Providing(clipboard) = &self { clipboard.destroy(); } Ok(()) } } struct LocalEventHubInner { next_id: u32, handlers: HashMap<u32, Box<dyn EventHandler>>, } struct LocalEventHub { inner: RwLock<LocalEventHubInner>, } impl LocalEventHub { fn new() -> LocalEventHub { LocalEventHub { inner: RwLock::new(LocalEventHubInner { next_id: 0, handlers: HashMap::new(), }), } } fn add_event_handler(&self, handler: Box<dyn EventHandler>) -> ServiceResult<u32> { let mut inner = self.inner.write()?; let id = inner.next_id; inner.handlers.insert(id, handler); inner.next_id += 1; Ok(id) } fn remove_event_handler(&self, id: u32) { match self.inner.write() { Ok(mut inner) => { inner.handlers.remove(&id); } Err(err) => { error!("Unregister event handler failed: {}", err); } } } } impl EventHub for LocalEventHub { fn send(&self, event: Event) { match self.inner.read() { Ok(inner) => { for event_handler in inner.handlers.values() { event_handler.handle(event.clone()); } } Err(e) => { error!("Queue event failed: {}", e); } }; } } struct LocalEventSubscription { event_hub: Arc<LocalEventHub>, id: u32, } impl LocalEventSubscription { fn new(event_hub: Arc<LocalEventHub>, id: u32) -> LocalEventSubscription { LocalEventSubscription { event_hub, id } } } impl Drop for LocalEventSubscription { fn drop(&mut self) { self.event_hub.remove_event_handler(self.id) } } impl EventSubscription for LocalEventSubscription {} pub struct LocalTrustlessService { config: RwLock<Config>, opened_stores: RwLock<HashMap<String, Arc<dyn SecretsStore>>>, clipboard: RwLock<Arc<ClipboardHolder>>, event_hub: Arc<LocalEventHub>, } impl LocalTrustlessService { pub fn new() -> ServiceResult<LocalTrustlessService> { let config = read_config()?.unwrap_or_default(); Ok(LocalTrustlessService { config: RwLock::new(config), opened_stores: RwLock::new(HashMap::new()), clipboard: RwLock::new(Arc::new(ClipboardHolder::Empty)), event_hub: Arc::new(LocalEventHub::new()), }) } } impl TrustlessService for LocalTrustlessService { fn list_stores(&self) -> ServiceResult<Vec<StoreConfig>> { let config = self.config.read()?; Ok(config.stores.values().cloned().collect()) } fn upsert_store_config(&self, store_config: StoreConfig) -> ServiceResult<()> { let mut config = self.config.write()?; if config.default_store.is_none() { config.default_store = Some(store_config.name.to_string()); } config.stores.insert(store_config.name.to_string(), store_config); write_config(&config)?; Ok(()) } fn delete_store_config(&self, name: &str) -> ServiceResult<()> { let mut config = self.config.write()?; if config.stores.remove(name).is_some() { write_config(&config)?; } Ok(()) } fn open_store(&self, name: &str) -> ServiceResult<Arc<dyn SecretsStore>> { { let opened_stores = self.opened_stores.read()?; if let Some(store) = opened_stores.get(name) { return Ok(store.clone()); } } let mut opened_stores = self.opened_stores.write()?; let config = self.config.read()?; let store_config = config .stores .get(name) .ok_or_else(|| ServiceError::StoreNotFound(name.to_string()))?; let store = open_secrets_store( name, &store_config.store_url, &store_config.client_id, Duration::from_secs(store_config.autolock_timeout_secs), self.event_hub.clone(), )?; opened_stores.insert(name.to_string(), store.clone()); Ok(store) } fn get_default_store(&self) -> ServiceResult<Option<String>> { let config = self.config.read()?; Ok(config.default_store.to_owned()) } fn set_default_store(&self, name: &str) -> ServiceResult<()> { let mut config = self.config.write()?; if !config.stores.contains_key(name) { return Err(ServiceError::StoreNotFound(name.to_string())); } config.default_store = Some(name.to_string()); write_config(&config)?; Ok(()) } fn secret_to_clipboard( &self, store_name: &str, block_id: &str, properties: &[&str], display_name: &str, ) -> ServiceResult<Arc<dyn ClipboardControl>> { #[cfg(unix)] { let store = self.open_store(store_name)?; let secret_version = store.get_version(block_id)?; let secret_provider = SecretsProvider::new(secret_version, properties); let mut clipboard = self.clipboard.write()?; info!("Providing {} for {} in {}", properties.join(","), block_id, store_name); let next_clipboard = Arc::new(ClipboardHolder::Providing(Clipboard::new( display_name, secret_provider, store_name.to_string(), block_id.to_string(), self.event_hub.clone(), )?)); *clipboard = next_clipboard.clone(); Ok(next_clipboard) } #[cfg(not(unix))] { Err(ServiceError::NotAvailable) } } fn add_event_handler(&self, handler: Box<dyn EventHandler>) -> ServiceResult<Box<dyn EventSubscription>> { let id = self.event_hub.add_event_handler(handler)?; Ok(Box::new(LocalEventSubscription::new(self.event_hub.clone(), id))) } fn generate_id(&self) -> ServiceResult<String> { let rng = thread_rng(); Ok( rng .sample_iter(&distributions::Alphanumeric) .take(64) .collect::<String>(), ) } fn generate_password(&self, param: PasswordGeneratorParam) -> ServiceResult<String> { match param { PasswordGeneratorParam::Chars(params) => Ok(generate_chars(params)), PasswordGeneratorParam::Words(params) => Ok(generate_words(params)), } } fn check_autolock(&self) { let opened_stores = match self.opened_stores.read() { Ok(opened_stores) => opened_stores, Err(err) => { error!("Failed locking opened stores: {}", err); return; } }; for (name, secrets_store) in opened_stores.iter() { let status = match secrets_store.status() { Ok(status) => status, Err(error) => { error!("Autolocker was unable to query status: {}", error); continue; } }; if let Some(autolock_at) = status.autolock_at { if autolock_at < Utc::now().into() { info!("Autolocking {}", name); if let Err(error) = secrets_store.lock() { error!("Autolocker was unable to lock store: {}", error); } } } } } } impl std::fmt::Debug for LocalTrustlessService { fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { write!(f, "Local Trustless service") } }