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use diesel::query_dsl::methods::{FilterDsl, OrderDsl, FindDsl}; use diesel::expression_methods::ExpressionMethods; use self::super::super::tables::{self, sessions}; use chrono::{NaiveDateTime, Duration, Utc}; use diesel::sqlite::SqliteConnection; use rocket::http::{Cookies, Cookie}; use diesel::query_dsl::RunQueryDsl; use time::{self, Timespec}; use std::str::FromStr; use std::borrow::Cow; use diesel; /// Refer to [`doc/session.md`](../doc/session/) for more details. #[derive(Queryable, Insertable, AsChangeset, Serialize, Deserialize, Debug, Clone, Hash, Eq, PartialEq, Ord, PartialOrd)] #[changeset_options(treat_none_as_null="true")] #[table_name="sessions"] pub struct Session { /// Unique user ID. /// /// Actually not optional, but this allows us to get an ID from the database. pub id: Option<i32>, /// Time the cookie expires, defaults to a day from creation time. pub expiry: NaiveDateTime, /// Whether the user is logged in as admin (always `false` if `user_id == None`). pub is_admin: bool, /// The logged-in user ID, or `None` for unauthed access. pub user_id: Option<i32>, /// ID of board currently being solved pub sudoku_board_id: Option<i32>, /// The board skeleton sent to the user pub board_skeleton: Option<Cow<'static, str>>, /// Time the solving started pub solve_start: Option<NaiveDateTime>, } impl Session { /// Create an empty session expiring a day from the creation datetime. /// /// Put it in the database to get an ID to put back in the cookie. pub fn new() -> Session { Session { id: None, expiry: NaiveDateTime::from_timestamp((Utc::now() + Duration::days(1)).naive_utc().timestamp(), 0), is_admin: false, user_id: None, sudoku_board_id: None, board_skeleton: None, solve_start: None, } } /// Get/create a session for the specified cookieset. pub fn get(db: &SqliteConnection, cookies: &mut Cookies) -> Result<Session, &'static str> { if let Some(ssid) = cookies.get_private("session_id") { if let Ok(s) = tables::sessions::table.find(i32::from_str(ssid.value()).map_err(|_| "session_id cookie not an int")?).first::<Session>(db) { if s.expiry > Utc::now().naive_utc() { return Ok(s); } else { cookies.remove_private(ssid); } } } let sess = Session::new(); diesel::insert_into(tables::sessions::table).values(&sess).execute(db).map_err(|_| "couldn't create new session")?; // We need to round-trip to get an id let sess = tables::sessions::table.filter(tables::sessions::expiry.eq(&sess.expiry)) .order(tables::sessions::id.desc()) .first::<Session>(db) .map_err(|_| "couldn't re-acquire new session")?; cookies.add_private(Cookie::build("session_id", sess.id.unwrap().to_string()) .expires(time::at_utc(Timespec::new(sess.expiry.timestamp(), sess.expiry.timestamp_subsec_nanos() as i32))) .http_only(true) .finish()); Ok(sess) } /// Update the in-memory and in-DB model to start playing the specified game. /// /// # Examples /// /// ``` /// # extern crate sudoku_backend; /// # extern crate chrono; /// # use sudoku_backend::ops::setup::DatabaseConnection; /// # use chrono::{NaiveDateTime, NaiveDate, Utc}; /// # use sudoku_backend::ops::Session; /// # use std::env::temp_dir; /// # use std::fs; /// # let database_file = /// # ("$ROOT/sudoku-backend.db".to_string(), /// # temp_dir().join("sudoku-backend-doctest").join("ops-model-session-Session-log_in").join("sudoku-backend.db")); /// # fs::create_dir_all(database_file.1.parent().unwrap()).unwrap(); /// # let db = DatabaseConnection::initialise(&database_file); /// # let db = &db.get().unwrap(); /// let mut sess = Session { /// id: Some(32), /// expiry: NaiveDate::from_ymd(2018, 7, 9).and_hms(12, 40, 26), /// is_admin: false, /// user_id: None, /// sudoku_board_id: None, /// board_skeleton: None, /// solve_start: None, /// }; /// /// let skeleton = "3....5....25.81.........6......4..73.3....14..1.7......8...9.12.97........2..8.54"; /// sess.start_game(24, skeleton, &db).unwrap(); /// /// assert_eq!(sess, Session { /// id: Some(32), /// expiry: NaiveDate::from_ymd(2018, 7, 9).and_hms(12, 40, 26), /// is_admin: false, /// user_id: None, /// sudoku_board_id: Some(24), /// board_skeleton: Some(skeleton.into()), /// solve_start: Some(NaiveDateTime::from_timestamp(Utc::now().timestamp(), 0)), /// }); /// ``` pub fn start_game<S: Into<Cow<'static, str>>>(&mut self, bid: i32, skeleton: S, db: &SqliteConnection) -> Result<(), &'static str> { self.start_game_impl(bid, skeleton.into(), db) } fn start_game_impl(&mut self, bid: i32, skeleton: Cow<'static, str>, db: &SqliteConnection) -> Result<(), &'static str> { self.sudoku_board_id = Some(bid); self.board_skeleton = Some(skeleton); self.solve_start = Some(NaiveDateTime::from_timestamp(Utc::now().timestamp(), 0)); diesel::update(sessions::table.filter(sessions::id.eq(self.id.unwrap()))).set(&*self).execute(db).map(|_| ()).map_err(|_| "update failed") } /// Update the in-memory and in-DB model to start playing the specified game. /// /// # Examples /// /// ``` /// # extern crate sudoku_backend; /// # extern crate chrono; /// # use sudoku_backend::ops::setup::DatabaseConnection; /// # use sudoku_backend::ops::Session; /// # use std::env::temp_dir; /// # use chrono::NaiveDate; /// # use std::fs; /// # let database_file = /// # ("$ROOT/sudoku-backend.db".to_string(), /// # temp_dir().join("sudoku-backend-doctest").join("ops-model-session-Session-log_in").join("sudoku-backend.db")); /// # fs::create_dir_all(database_file.1.parent().unwrap()).unwrap(); /// # let db = DatabaseConnection::initialise(&database_file); /// # let db = &db.get().unwrap(); /// let mut sess = Session { /// id: Some(32), /// expiry: NaiveDate::from_ymd(2018, 7, 9).and_hms(12, 40, 26), /// is_admin: false, /// user_id: None, /// sudoku_board_id: Some(24), /// board_skeleton: Some("3....5....25.81.........6......4..73.3....14..1.7......8...9.12.97........2..8.54".into()), /// solve_start: Some(NaiveDate::from_ymd(2018, 7, 9).and_hms(2, 41, 27)), /// }; /// /// sess.stop_game(&db).unwrap(); /// /// assert_eq!(sess, Session { /// id: Some(32), /// expiry: NaiveDate::from_ymd(2018, 7, 9).and_hms(12, 40, 26), /// is_admin: false, /// user_id: None, /// sudoku_board_id: None, /// board_skeleton: None, /// solve_start: None, /// }); /// ``` pub fn stop_game(&mut self, db: &SqliteConnection) -> Result<(), &'static str> { self.sudoku_board_id = None; self.board_skeleton = None; self.solve_start = None; diesel::update(sessions::table.filter(sessions::id.eq(self.id.unwrap()))).set(&*self).execute(db).map(|_| ()).map_err(|_| "update failed") } /// Check if this session has a game going pub fn game_started(&self) -> bool { self.sudoku_board_id.is_some() && self.board_skeleton.is_some() && self.solve_start.is_some() } /// Update the in-memory and in-DB model to be logged in as the specified user with the specified permissions. /// /// # Examples /// /// Before: /// /// ```sql /// INSERT INTO "sessions" VALUES(32, '2018-07-09 12:40:26', 0, NULL, NULL, NULL, NULL); /// ``` /// /// Update: /// /// ``` /// # extern crate sudoku_backend; /// # extern crate chrono; /// # use sudoku_backend::ops::setup::DatabaseConnection; /// # use sudoku_backend::ops::Session; /// # use std::env::temp_dir; /// # use chrono::NaiveDate; /// # use std::fs; /// # let database_file = /// # ("$ROOT/sudoku-backend.db".to_string(), /// # temp_dir().join("sudoku-backend-doctest").join("ops-model-session-Session-log_in").join("sudoku-backend.db")); /// # fs::create_dir_all(database_file.1.parent().unwrap()).unwrap(); /// # let db = DatabaseConnection::initialise(&database_file); /// # let db = &db.get().unwrap(); /// let mut sess = Session { /// id: Some(32), /// expiry: NaiveDate::from_ymd(2018, 7, 9).and_hms(12, 40, 26), /// is_admin: false, /// user_id: None, /// sudoku_board_id: None, /// board_skeleton: None, /// solve_start: None, /// }; /// /// sess.log_in(18, true, &db).unwrap(); /// /// assert_eq!(sess, Session { /// id: Some(32), /// expiry: NaiveDate::from_ymd(2018, 7, 9).and_hms(12, 40, 26), /// is_admin: true, /// user_id: Some(18), /// sudoku_board_id: None, /// board_skeleton: None, /// solve_start: None, /// }); /// ``` /// /// After: /// /// ```sql /// INSERT INTO "sessions" VALUES(32, '2018-07-09 12:40:26', 1, 18, NULL, NULL, NULL); /// ``` pub fn log_in(&mut self, uid: i32, is_admin: bool, db: &SqliteConnection) -> Result<(), &'static str> { self.user_id = Some(uid); self.is_admin = is_admin; diesel::update(sessions::table.filter(sessions::id.eq(self.id.unwrap()))).set(&*self).execute(db).map(|_| ()).map_err(|_| "update failed") } /// Update the in-memory and in-DB model to not be logged in nor be admin. /// /// # Examples /// /// Before: /// /// ```sql /// INSERT INTO "sessions" VALUES(32, '2018-07-09 12:40:26', 1, 18, NULL, NULL, NULL); /// ``` /// /// Update: /// /// ``` /// # extern crate sudoku_backend; /// # extern crate chrono; /// # use sudoku_backend::ops::setup::DatabaseConnection; /// # use sudoku_backend::ops::Session; /// # use std::env::temp_dir; /// # use chrono::NaiveDate; /// # use std::fs; /// # let database_file = /// # ("$ROOT/sudoku-backend.db".to_string(), /// # temp_dir().join("sudoku-backend-doctest").join("ops-model-session-Session-log_out").join("sudoku-backend.db")); /// # fs::create_dir_all(database_file.1.parent().unwrap()).unwrap(); /// # let db = DatabaseConnection::initialise(&database_file); /// # let db = &db.get().unwrap(); /// let mut sess = Session { /// id: Some(32), /// expiry: NaiveDate::from_ymd(2018, 7, 9).and_hms(12, 40, 26), /// is_admin: true, /// user_id: Some(18), /// sudoku_board_id: None, /// board_skeleton: None, /// solve_start: None, /// }; /// /// sess.log_out(&db).unwrap(); /// /// assert_eq!(sess, Session { /// id: Some(32), /// expiry: NaiveDate::from_ymd(2018, 7, 9).and_hms(12, 40, 26), /// is_admin: false, /// user_id: None, /// sudoku_board_id: None, /// board_skeleton: None, /// solve_start: None, /// }); /// ``` /// /// After: /// /// ```sql /// INSERT INTO "sessions" VALUES(32, '2018-07-09 12:40:26', 0, NULL, NULL, NULL, NULL); /// ``` pub fn log_out(&mut self, db: &SqliteConnection) -> Result<(), &'static str> { self.user_id = None; self.is_admin = false; diesel::update(sessions::table.filter(sessions::id.eq(self.id.unwrap()))).set(&*self).execute(db).map(|_| ()).map_err(|_| "update failed") } }