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// Copyright 2020 MaidSafe.net limited. // // This SAFE Network Software is licensed to you under the MIT license <LICENSE-MIT // http://opensource.org/licenses/MIT> or the Modified BSD license <LICENSE-BSD // https://opensource.org/licenses/BSD-3-Clause>, at your option. This file may not be copied, // modified, or distributed except according to those terms. Please review the Licences for the // specific language governing permissions and limitations relating to use of the SAFE Network // Software. use super::common::sk_from_hex; use crate::{AuthedApp, AuthedAppsList, Error, Result, SafeAuthReq, SafeAuthReqId}; use bincode::deserialize; use log::{debug, info}; use safe_authenticator::{ access_container, access_container::update_container_perms, app_auth::authenticate, config, errors::AuthError, ipc::decode_ipc_msg, revocation::revoke_app as safe_authenticator_revoke_app, Authenticator, }; use safe_core::{ client as safe_core_client, client::Client, core_structs::{access_container_enc_key, AccessContainerEntry}, ipc::{ decode_msg, encode_msg, req::{AuthReq, ContainersReq, IpcReq, ShareMDataReq}, resp::IpcResp, IpcMsg, }, utils::symmetric_decrypt, CoreError, }; use safe_nd::{AppPermissions, ClientFullId, Error as SndError, MDataAddress}; use std::collections::HashMap; // Authenticator API #[derive(Default)] pub struct SafeAuthenticator { safe_authenticator: Option<Authenticator>, } impl SafeAuthenticator { pub fn new(config_dir_path: Option<&str>) -> Self { if let Some(path) = config_dir_path { safe_core::config_handler::set_config_dir_path(path); } Self { safe_authenticator: None, } } /// # Log in /// /// Using an account already created, you can log in to /// the SAFE Network using the `Authenticator` daemon. /// /// ## Example /// ```ignore /// use safe_api::SafeAuthenticator; /// let mut safe_auth = SafeAuthenticator::new(None); /// # fn random_str() -> String { (0..4).map(|_| rand::random::<char>()).collect() } /// /// Using an already existing account's passphrase and password: /// let my_secret = "mysecretstring"; /// let my_password = "mypassword"; /// # let my_secret = &(random_str()); /// # let my_password = &(random_str()); /// # let sk = "83c055c5efdc483bd967adba5c1769daee0a17bc5fa2b6e129cd6b596c217617"; /// # async_std::task::block_on(async { /// # safe_auth.create_acc(sk, my_secret, my_password).await.unwrap(); /// let logged_in = safe_auth.log_in(my_secret, my_password).await; /// match logged_in { /// Ok(()) => assert!(true), // This should pass /// Err(_) => assert!(false) /// } /// # }); ///``` /// /// ## Error Example /// If the account does not exist, the function will return an appropriate error: ///```ignore /// use safe_api::{SafeAuthenticator, Error}; /// let mut safe_auth = SafeAuthenticator::new(None); /// # async_std::task::block_on(async { /// let not_logged_in = safe_auth.log_in("non", "existant").await; /// match not_logged_in { /// Ok(()) => assert!(false), // This should not pass /// Err(Error::AuthError(message)) => { /// assert!(message.contains("Failed to log in")); /// } /// Err(_) => assert!(false), // This should not pass /// } /// # }); ///``` pub async fn log_in(&mut self, passphrase: &str, password: &str) -> Result<()> { debug!("Attempting to log in..."); match Authenticator::login(passphrase, password, || info!("Disconnected from network")) .await { Ok(auth) => { debug!("Logged-in successfully"); self.safe_authenticator = Some(auth); Ok(()) } Err(err) => { let msg = match err { AuthError::SndError(SndError::NoSuchLoginPacket) => { "no SAFE account found with the passphrase provided".to_string() } AuthError::CoreError(CoreError::SymmetricDecipherFailure) => { "unable to log in with the password provided".to_string() } other => other.to_string(), }; Err(Error::AuthError(format!("Failed to log in: {}", msg))) } } } pub fn log_out(&mut self) -> Result<()> { debug!("Dropping logged in session..."); self.safe_authenticator = None; Ok(()) } pub fn is_logged_in(&self) -> bool { let is_logged_in = self.safe_authenticator.is_some(); debug!("Is logged in? {}", is_logged_in); is_logged_in } /// # Create Account /// Creates a new account on the SAFE Network. /// Returns an error if an account exists or if there was some /// problem during the account creation process. /// If the account is successfully created it keeps the logged in session (discarding a previous session) /// /// Note: This does _not_ perform any strength checks on the /// strings used to create the account. /// /// ## Example /// ```ignore /// use safe_api::SafeAuthenticator; /// let mut safe_auth = SafeAuthenticator::new(None); /// # fn random_str() -> String { (0..4).map(|_| rand::random::<char>()).collect() } /// let my_secret = "mysecretstring"; /// let my_password = "mypassword"; /// # let my_secret = &(random_str()); /// # let my_password = &(random_str()); /// # let sk = "83c055c5efdc483bd967adba5c1769daee0a17bc5fa2b6e129cd6b596c217617"; /// # async_std::task::block_on(async { /// let acc_created = safe_auth.create_acc(sk, my_secret, my_password).await; /// match acc_created { /// Ok(()) => assert!(true), // This should pass /// Err(_) => assert!(false) /// } /// # }); ///``` /// /// ## Error Example /// If an account with same passphrase already exists, /// the function will return an error: /// ```ignore /// use safe_api::{SafeAuthenticator, Error}; /// let mut safe_auth = SafeAuthenticator::new(None); /// # fn random_str() -> String { (0..4).map(|_| rand::random::<char>()).collect() } /// /// Using an already existing account's passphrase and password: /// let my_secret = "mysecretstring"; /// let my_password = "mypassword"; /// # let my_secret = &(random_str()); /// # let my_password = &(random_str()); /// # let sk = "83c055c5efdc483bd967adba5c1769daee0a17bc5fa2b6e129cd6b596c217617"; /// # async_std::task::block_on(async { /// # safe_auth.create_acc(sk, my_secret, my_password).await.unwrap(); /// let acc_not_created = safe_auth.create_acc(sk, my_secret, my_password).await; /// match acc_not_created { /// Ok(_) => assert!(false), // This should not pass /// Err(Error::AuthError(message)) => { /// assert!(message.contains("Failed to create an account")); /// } /// Err(_) => assert!(false), // This should not pass /// } /// # }); ///``` pub async fn create_acc(&mut self, sk: &str, passphrase: &str, password: &str) -> Result<()> { debug!("Attempting to create a SAFE account..."); let secret_key = sk_from_hex(sk)?; match Authenticator::create_client_with_acc( passphrase, password, ClientFullId::from(secret_key), || { // TODO: allow the caller to provide the callback function // eprintln!("{}", "Disconnected from network"); }, ) .await { Ok(auth) => { debug!("Account just created successfully"); self.safe_authenticator = Some(auth); Ok(()) } Err(err) => { let msg = match err { AuthError::SndError(SndError::LoginPacketExists) => { "a SAFE account already exists with the passphrase provided".to_string() } other => other.to_string(), }; Err(Error::AuthError(format!( "Failed to create an account: {}", msg ))) } } } pub async fn decode_req(&self, req: &str) -> Result<(SafeAuthReqId, SafeAuthReq)> { let client = &get_safe_authenticator(&self.safe_authenticator)?.client; let req_msg = match decode_msg(req) { Ok(msg) => msg, Err(err) => { return Err(Error::AuthError(format!( "Failed to decode the auth request string: {:?}", err ))); } }; debug!("Auth request string decoded: {:?}", req_msg); let ipc_req = decode_ipc_msg(client, req_msg).await.map_err(|err| { Error::AuthenticatorError(format!("Failed to decode request: {}", err)) })?; match ipc_req { Ok(IpcMsg::Req { request: IpcReq::Auth(app_auth_req), req_id, }) => Ok((req_id, SafeAuthReq::Auth(app_auth_req))), other => Err(Error::AuthError(format!( "Failed to decode string as an authorisation request, it's a: '{:?}'", other ))), } } /// # Authorise an application /// /// Using an account already created, you can log in to /// the SAFE Network and authorise an application. /// /// ## Example /// ```ignore /// use safe_api::SafeAuthenticator; /// let mut safe_auth = SafeAuthenticator::new(None); /// # fn random_str() -> String { (0..4).map(|_| rand::random::<char>()).collect() } /// /// Using an already existing account's passphrase and password: /// let my_secret = "mysecretstring"; /// let my_password = "mypassword"; /// # let my_secret = &(random_str()); /// # let my_password = &(random_str()); /// # let sk = "83c055c5efdc483bd967adba5c1769daee0a17bc5fa2b6e129cd6b596c217617"; /// # async_std::task::block_on(async { /// # safe_auth.create_acc(sk, my_secret, my_password).await.unwrap(); /// let auth_req = "bAAAAAAEXVK4SGAAAAAABAAAAAAAAAAAANZSXILTNMFUWI43BMZSS4Y3MNEAAQAAAAAAAAAAAKNAUMRJAINGESEAAAAAAAAAAABGWC2LEKNQWMZJONZSXIICMORSAAAIBAAAAAAAAAAAAOAAAAAAAAAAAL5YHKYTMNFRQCAAAAAAAAAAAAAAAAAAB"; /// safe_auth.log_in(my_secret, my_password).await.unwrap(); /// let auth_response = safe_auth.authorise_app(auth_req/*, &|_| true*/).await; /// match auth_response { /// Ok(_) => assert!(true), // This should pass /// Err(_) => assert!(false) /// } /// # }); ///``` /// ## Error Example /// ```ignore /// use safe_api::{SafeAuthenticator, Error}; /// let mut safe_auth = SafeAuthenticator::new(None); /// # fn random_str() -> String { (0..4).map(|_| rand::random::<char>()).collect() } /// /// Using an already existing account's passphrase and password: /// let my_secret = "mysecretstring"; /// let my_password = "mypassword"; /// # let my_secret = &(random_str()); /// # let my_password = &(random_str()); /// # let sk = "83c055c5efdc483bd967adba5c1769daee0a17bc5fa2b6e129cd6b596c217617"; /// # async_std::task::block_on(async { /// # safe_auth.create_acc(sk, my_secret, my_password).await.unwrap(); /// /// Using an invalid auth request string /// let auth_req = "invalid-auth-req-string"; /// safe_auth.log_in(my_secret, my_password).await.unwrap(); /// let auth_response = safe_auth.authorise_app(auth_req/*, &|_| true*/).await; /// match auth_response { /// Ok(_) => assert!(false), // This should not pass /// Err(Error::AuthError(message)) => { /// assert!(message.contains("EncodeDecodeError")); /// } /// Err(_) => assert!(false), // This should not pass /// } /// # }); ///``` pub async fn authorise_app(&self, req: &str) -> Result<String> { let safe_authenticator = get_safe_authenticator(&self.safe_authenticator)?; let client = &safe_authenticator.client; let req_msg = match decode_msg(req) { Ok(msg) => msg, Err(err) => { return Err(Error::AuthError(format!( "Failed to decode the auth request string: {:?}", err ))); } }; debug!("Auth request string decoded: {:?}", req_msg); let ipc_req = decode_ipc_msg(client, req_msg).await.map_err(|err| { Error::AuthenticatorError(format!("Failed to decode request: {}", err)) })?; match ipc_req { Ok(IpcMsg::Req { request: IpcReq::Auth(app_auth_req), req_id, }) => { info!("Request was recognised as a general app auth request"); debug!("Decoded request (req_id={:?}): {:?}", req_id, app_auth_req); gen_auth_response(safe_authenticator, req_id, app_auth_req).await } Ok(IpcMsg::Req { request: IpcReq::Containers(cont_req), req_id, }) => { info!("Request was recognised as a containers auth request"); debug!("Decoded request (req_id={:?}): {:?}", req_id, cont_req); gen_cont_auth_response(safe_authenticator, req_id, cont_req).await } Ok(IpcMsg::Req { request: IpcReq::Unregistered(user_data), req_id, }) => { info!("Request was recognised as an unregistered auth request"); debug!("Decoded request (req_id={:?}): {:?}", req_id, user_data); gen_unreg_auth_response(req_id) } Ok(IpcMsg::Req { request: IpcReq::ShareMData(share_mdata_req), req_id, }) => { info!("Request was recognised as a share MD auth request"); debug!( "Decoded request (req_id={:?}): {:?}", req_id, share_mdata_req ); gen_shared_md_auth_response(safe_authenticator, req_id, share_mdata_req).await } Err((error_code, description, _err)) => Err(Error::AuthError(format!( "Failed decoding the auth request: {} - {:?}", error_code, description ))), Ok(IpcMsg::Resp { .. }) | Ok(IpcMsg::Revoked { .. }) | Ok(IpcMsg::Err(..)) => { Err(Error::AuthError( "The request was not recognised as a valid auth request".to_string(), )) } } } /// # Get the list of applications authorised by this account /// /// Using an account already created, you can log in to /// the SAFE Network and get the list of all the applications that have /// been authorised so far. /// /// ## Example /// ```ignore /// use safe_api::SafeAuthenticator; /// let mut safe_auth = SafeAuthenticator::new(None); /// # fn random_str() -> String { (0..4).map(|_| rand::random::<char>()).collect() } /// /// Using an already existing account which has been /// /// already used to authorise some application: /// let my_secret = "mysecretstring"; /// let my_password = "mypassword"; /// # let my_secret = &(random_str()); /// # let my_password = &(random_str()); /// # let sk = "83c055c5efdc483bd967adba5c1769daee0a17bc5fa2b6e129cd6b596c217617"; /// # async_std::task::block_on(async { /// # safe_auth.create_acc(sk, my_secret, my_password).await.unwrap(); /// safe_auth.log_in(my_secret, my_password).await.unwrap(); /// # let auth_req = "bAAAAAAEXVK4SGAAAAAABAAAAAAAAAAAANZSXILTNMFUWI43BMZSS4Y3MNEAAQAAAAAAAAAAAKNAUMRJAINGESEAAAAAAAAAAABGWC2LEKNQWMZJONZSXIICMORSAAAIBAAAAAAAAAAAAOAAAAAAAAAAAL5YHKYTMNFRQCAAAAAAAAAAAAAAAAAAB"; /// # safe_auth.authorise_app(auth_req/*, &|_| true*/).await.unwrap(); /// /// Get the list of authorised apps /// let authed_apps = safe_auth.authed_apps().await; /// match authed_apps { /// Ok(_) => assert!(true), // This should pass /// Err(_) => assert!(false) /// } /// # }); ///``` pub async fn authed_apps(&self) -> Result<AuthedAppsList> { let client = &get_safe_authenticator(&self.safe_authenticator)?.client; debug!("Attempting to fetch list of authorised apps..."); let (_, auth_cfg) = config::list_apps(client).await.map_err(|err| { Error::AuthenticatorError(format!( "Failed to obtain list of authorised applications: {}", err )) })?; let access_container = client.access_container().await; let entries = client .list_seq_mdata_entries(access_container.name(), access_container.type_tag()) .await .map_err(|err| { Error::AuthenticatorError(format!("Failed to read access container: {}", err)) })?; let nonce = access_container.nonce().ok_or_else(|| { Error::AuthenticatorError("No nonce on access container's MDataInfo".to_string()) })?; let mut authed_apps = AuthedAppsList::new(); for app in auth_cfg.values() { let key = access_container_enc_key(&app.info.id, &app.keys.enc_key, nonce).map_err( |err| { Error::AuthenticatorError(format!( "Failed to generate an acceess container encryption key: {}", err )) }, )?; // Empty entry means it has been deleted. match entries.get(&key) { Some(entry) if !entry.data.is_empty() => { let plaintext = symmetric_decrypt(&entry.data, &app.keys.enc_key).map_err(|err| { Error::AuthenticatorError(format!( "Failed to obtain list of authorised applications: {}", err )) })?; let app_access = deserialize::<AccessContainerEntry>(&plaintext).map_err(|err| { Error::AuthenticatorError(format!( "Failed to deserialise access container entry: {}", err )) })?; let mut containers = HashMap::new(); for (container_name, (_mdata_info, permission_set)) in app_access { let _ = containers.insert(container_name, permission_set); } authed_apps.push(AuthedApp { id: app.info.id.clone(), name: app.info.name.clone(), vendor: app.info.vendor.clone(), app_permissions: AppPermissions { //TODO: retrieve the app permissions transfer_coins: true, perform_mutations: true, get_balance: true, }, containers, own_container: false, //TODO: retrieve the own container flag }); } _ => {} } } debug!( "Returning list of authorised applications: {:?}", authed_apps ); Ok(authed_apps) } /// # Revoke all permissions from an application /// /// Using an account already created, you can log in to /// the SAFE Network and revoke all permissions previously granted to an /// application by providing its ID. /// /// ## Example /// ```ignore /// use safe_api::SafeAuthenticator; /// let mut safe_auth = SafeAuthenticator::new(None); /// # fn random_str() -> String { (0..4).map(|_| rand::random::<char>()).collect() } /// /// Using an already existing account which has been /// /// already used to authorise some application: /// let my_secret = "mysecretstring"; /// let my_password = "mypassword"; /// # let my_secret = &(random_str()); /// # let my_password = &(random_str()); /// # let sk = "83c055c5efdc483bd967adba5c1769daee0a17bc5fa2b6e129cd6b596c217617"; /// # async_std::task::block_on(async { /// # safe_auth.create_acc(sk, my_secret, my_password).await.unwrap(); /// safe_auth.log_in(my_secret, my_password).await.unwrap(); /// # let auth_req = "bAAAAAAEXVK4SGAAAAAABAAAAAAAAAAAANZSXILTNMFUWI43BMZSS4Y3MNEAAQAAAAAAAAAAAKNAUMRJAINGESEAAAAAAAAAAABGWC2LEKNQWMZJONZSXIICMORSAAAIBAAAAAAAAAAAAOAAAAAAAAAAAL5YHKYTMNFRQCAAAAAAAAAAAAAAAAAAB"; /// # safe_auth.authorise_app(auth_req/*, &|_| true*/).await.unwrap(); /// /// Revoke all permissions from app with ID `net.maidsafe.cli` /// let revoked = safe_auth.revoke_app("net.maidsafe.cli").await; /// match revoked { /// Ok(_) => assert!(true), // This should pass /// Err(_) => assert!(false) /// } /// # }); /// ``` /// /// ## Error Example /// ```ignore /// use safe_api::{SafeAuthenticator, Error}; /// let mut safe_auth = SafeAuthenticator::new(None); /// # fn random_str() -> String { (0..4).map(|_| rand::random::<char>()).collect() } /// /// Using an already existing account which has been /// /// already used to authorise some application: /// let my_secret = "mysecretstring"; /// let my_password = "mypassword"; /// # let my_secret = &(random_str()); /// # let my_password = &(random_str()); /// # let sk = "83c055c5efdc483bd967adba5c1769daee0a17bc5fa2b6e129cd6b596c217617"; /// # async_std::task::block_on(async { /// # safe_auth.create_acc(sk, my_secret, my_password).await.unwrap(); /// safe_auth.log_in(my_secret, my_password).await.unwrap(); /// /// Try to revoke permissions with an incorrect app ID /// let revoked = safe_auth.revoke_app("invalid-app-id").await; /// match revoked { /// Ok(_) => assert!(false), // This should not pass /// Err(Error::AuthError(message)) => { /// assert!(message.contains("UnknownApp")); /// } /// Err(_) => assert!(false), // This should not pass /// } /// # }); ///``` pub async fn revoke_app(&self, app_id: &str) -> Result<()> { let client = &get_safe_authenticator(&self.safe_authenticator)?.client; let id = app_id.to_string(); safe_authenticator_revoke_app(client, &id) .await .map_err(|err| Error::AuthError(format!("Failed to revoke permissions: {}", err)))?; debug!("Application sucessfully revoked: {}", id); Ok(()) } } // Helper to unwrap the Authenticator if it's logged in fn get_safe_authenticator(safe_authenticator: &Option<Authenticator>) -> Result<&Authenticator> { safe_authenticator.as_ref().ok_or_else(|| { Error::AuthError("You need to log in to a SAFE Network account first".to_string()) }) } // Helper function to generate an app authorisation response async fn gen_auth_response( authenticator: &Authenticator, req_id: SafeAuthReqId, auth_req: AuthReq, ) -> Result<String> { let auth_granted = authenticate(&authenticator.client, auth_req) .await .map_err(|err| { Error::AuthenticatorError(format!( "Failed to authorise application on the network: {}", err )) })?; debug!("Encoding response with auth credentials auth granted..."); let resp = encode_msg(&IpcMsg::Resp { req_id, response: IpcResp::Auth(Ok(auth_granted)), }) .map_err(|err| Error::AuthenticatorError(format!("Failed to encode response: {:?}", err)))?; debug!("Returning auth response generated"); Ok(resp) } // Helper function to generate a containers authorisation response async fn gen_cont_auth_response( authenticator: &Authenticator, req_id: SafeAuthReqId, cont_req: ContainersReq, ) -> Result<String> { let permissions = cont_req.containers.clone(); let app_id = cont_req.app.id; let client = &authenticator.client; let app = config::get_app(client, &app_id) .await .map_err(|err| Error::AuthError(format!("Failed to generate response: {}", err)))?; let sign_pk = app.keys.public_key(); let mut perms = update_container_perms(&client, permissions, sign_pk) .await .map_err(|err| Error::AuthError(format!("Failed to update permissions: {}", err)))?; let app_keys = app.keys; let version = match access_container::fetch_entry(client.clone(), app_id.clone(), app_keys.clone()).await { // Updating an existing entry Ok((version, Some(mut existing_perms))) => { for (key, val) in perms { let _ = existing_perms.insert(key, val); } perms = existing_perms; version + 1 } // Adding a new access container entry Ok((_, None)) | Err(AuthError::CoreError(CoreError::DataError(safe_nd::Error::NoSuchEntry))) => 0, // Error has occurred while trying to get an // existing entry Err(e) => return Err(Error::AuthError(format!("{}", e))), }; access_container::put_entry(&client, &app_id, &app_keys, &perms, version) .await .map_err(|err| { Error::AuthError(format!( "Failed to write permissions in access container: {}", err )) })?; debug!("Encoding response..."); let resp = encode_msg(&IpcMsg::Resp { req_id, response: IpcResp::Containers(Ok(())), }) .map_err(|err| Error::AuthError(format!("Failed to encode response: {:?}", err)))?; debug!("Returning containers auth response generated: {:?}", resp); Ok(resp) } // Helper function to generate an unregistered authorisation response fn gen_unreg_auth_response(req_id: SafeAuthReqId) -> Result<String> { let bootstrap_cfg = safe_core_client::bootstrap_config().map_err(|err| { Error::AuthenticatorError(format!( "Failed to obtain bootstrap info for response: {}", err )) })?; debug!("Encoding response... {:?}", bootstrap_cfg); let resp = encode_msg(&IpcMsg::Resp { req_id, response: IpcResp::Unregistered(Ok(bootstrap_cfg)), }) .map_err(|err| Error::AuthenticatorError(format!("Failed to encode response: {:?}", err)))?; debug!("Returning unregistered auth response generated: {:?}", resp); Ok(resp) } // Helper function to generate an authorisation response for sharing MD async fn gen_shared_md_auth_response( authenticator: &Authenticator, req_id: SafeAuthReqId, share_mdata_req: ShareMDataReq, ) -> Result<String> { let client = &authenticator.client; let app_info = config::get_app(client, &share_mdata_req.app.id) .await .map_err(|err| { Error::AuthenticatorError(format!("Failed to find application by its id: {}", err)) })?; let user = app_info.keys.public_key(); for mdata in share_mdata_req.mdata.iter() { let md = client .get_seq_mdata_shell(mdata.name, mdata.type_tag) .await .map_err(|err| { Error::AuthenticatorError(format!("Failed to obtain MData shell: {}", err)) })?; let version = md.version(); let address = MDataAddress::Seq { name: mdata.name, tag: mdata.type_tag, }; client .set_mdata_user_permissions(address, user, mdata.perms.clone(), version + 1) .await .map_err(|err| Error::AuthError(format!("Failed set user permissions: {}", err)))?; } debug!("Encoding response..."); let resp = encode_msg(&IpcMsg::Resp { req_id, response: IpcResp::ShareMData(Ok(())), }) .map_err(|err| Error::AuthenticatorError(format!("Failed to encode response: {:?}", err)))?; debug!("Returning shared MD auth response generated: {:?}", resp); Ok(resp) }