db_conn_sqlite_new.rs 76.1 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 *                                                                             *
 *        WARNING                                                              *
 *                                                                             *
 * This file is auto generated by ./generate_connectors.sh                     *
 *                                                                             *
 * Do not edit this file directly. Instead edit one of the corresponding       *
 * .header.rs oder .base.rs files.                                             *
 *                                                                             *
 *                                                                             *
 *                                                                             *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

14
15
16
17
18
19
20
21
22
23
24
25
26
27
/*  medal                                                                                                            *\
 *  Copyright (C) 2020  Bundesweite Informatikwettbewerbe                                                            *
 *                                                                                                                   *
 *  This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero        *
 *  General Public License as published  by the Free Software Foundation, either version 3 of the License, or (at    *
 *  your option) any later version.                                                                                  *
 *                                                                                                                   *
 *  This program 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 Affero General Public      *
 *  License for more details.                                                                                        *
 *                                                                                                                   *
 *  You should have received a copy of the GNU Affero General Public License along with this program.  If not, see   *
\*  <http://www.gnu.org/licenses/>.                                                                                  */

28
#![cfg(feature = "rusqlite")]
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77

extern crate rusqlite;

use rusqlite::Connection;
use time;
use time::Duration;

use db_conn::{MedalConnection, MedalObject};
use db_objects::*;
use helpers;

trait Queryable {
    fn query_map_one<T, F>(&self, sql: &str, params: &[&dyn rusqlite::types::ToSql], f: F)
                           -> rusqlite::Result<Option<T>>
        where F: FnOnce(&rusqlite::Row) -> T;
    fn query_map_many<T, F>(&self, sql: &str, params: &[&dyn rusqlite::types::ToSql], f: F) -> rusqlite::Result<Vec<T>>
        where F: FnMut(&rusqlite::Row) -> T;
    fn exists(&self, sql: &str, params: &[&dyn rusqlite::types::ToSql]) -> bool;
    fn get_last_id(&self) -> Option<i32>;
}

impl Queryable for Connection {
    fn query_map_one<T, F>(&self, sql: &str, params: &[&dyn rusqlite::types::ToSql], f: F)
                           -> rusqlite::Result<Option<T>>
        where F: FnOnce(&rusqlite::Row) -> T {
        let mut stmt = self.prepare(sql)?;
        let mut rows = stmt.query(params)?;
        match rows.next() {
            None => Ok(None),
            Some(Err(e)) => Err(e),
            Some(Ok(row)) => Ok(Some(f(&row))),
        }
    }

    fn query_map_many<T, F>(&self, sql: &str, params: &[&dyn rusqlite::types::ToSql], f: F) -> rusqlite::Result<Vec<T>>
        where F: FnMut(&rusqlite::Row) -> T {
        let mut stmt = self.prepare(sql)?;
        let rows = stmt.query_map(params, f)?;
        Ok(rows.map(|x| x.unwrap()).collect())
    }

    fn exists(&self, sql: &str, params: &[&dyn rusqlite::types::ToSql]) -> bool {
        let mut stmt = self.prepare(sql).unwrap();
        stmt.exists(params).unwrap()
    }

    fn get_last_id(&self) -> Option<i32> { self.query_row("SELECT last_insert_rowid()", &[], |row| row.get(0)).ok() }
}

78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
impl MedalObject<Connection> for Submission {
    fn save(&mut self, conn: &Connection) {
        match self.get_id() {
            Some(_id) => unimplemented!(),
            None => {
                let query = "INSERT INTO submission (task, session, grade, validated, nonvalidated_grade,
                                                     subtask_identifier, value, date, needs_validation)
                             VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9)";
                conn.execute(query,
                             &[&self.task,
                               &self.session_user,
                               &self.grade,
                               &self.validated,
                               &self.nonvalidated_grade,
                               &self.subtask_identifier,
                               &self.value,
                               &self.date,
                               &self.needs_validation])
                    .unwrap();
                self.set_id(conn.get_last_id().unwrap());
            }
        }
    }
}

impl MedalObject<Connection> for Grade {
    fn save(&mut self, conn: &Connection) {
        let query = "INSERT OR REPLACE INTO grade (taskgroup, session, grade, validated)
                     VALUES (?1, ?2, ?3, ?4)";
107

108
109
110
        conn.execute(query, &[&self.taskgroup, &self.user, &self.grade, &self.validated]).unwrap();
    }
}
111
112
113
114
115
116
117
118
119
120
121
122
123
124
/*  medal                                                                                                            *\
 *  Copyright (C) 2020  Bundesweite Informatikwettbewerbe                                                            *
 *                                                                                                                   *
 *  This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero        *
 *  General Public License as published  by the Free Software Foundation, either version 3 of the License, or (at    *
 *  your option) any later version.                                                                                  *
 *                                                                                                                   *
 *  This program 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 Affero General Public      *
 *  License for more details.                                                                                        *
 *                                                                                                                   *
 *  You should have received a copy of the GNU Affero General Public License along with this program.  If not, see   *
\*  <http://www.gnu.org/licenses/>.                                                                                  */

125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
impl MedalObject<Connection> for Participation {
    fn save(&mut self, conn: &Connection) {
        let query = "INSERT INTO participation (contest, session, start_date)
                     VALUES (?1, ?2, ?3)";
        conn.execute(query, &[&self.contest, &self.user, &self.start]).unwrap();
    }
}

impl MedalObject<Connection> for Group {
    fn save(&mut self, conn: &Connection) {
        match self.get_id() {
            Some(_id) => unimplemented!(),
            None => {
                let query = "INSERT INTO usergroup (name, groupcode, tag, admin)
                             VALUES (?1, ?2, ?3, ?4)";
                conn.execute(query, &[&self.name, &self.groupcode, &self.tag, &self.admin]).unwrap();
                self.set_id(conn.get_last_id().unwrap());
            }
        }
    }
}

impl MedalObject<Connection> for Task {
    fn save(&mut self, conn: &Connection) {
        let query = "SELECT id
                     FROM task
                     WHERE taskgroup = ?1
                     AND location = ?2";
        conn.query_map_one(query, &[&self.taskgroup, &self.location], |row| row.get(0))
            .unwrap_or(None)
            .and_then(|id| {
                self.set_id(id);
                Some(())
            })
            .unwrap_or(()); // Err means no entry yet and is expected result

        let id = match self.get_id() {
            Some(id) => {
                let query = "UPDATE task
                             SET taskgroup = ?1, location = ?2, stars = ?3
                             WHERE id = ?4";
                conn.execute(query, &[&self.taskgroup, &self.location, &self.stars, &id]).unwrap();
                id
            }
            None => {
                let query = "INSERT INTO task (taskgroup, location, stars)
                             VALUES (?1, ?2, ?3)";
                conn.execute(query, &[&self.taskgroup, &self.location, &self.stars]).unwrap();
                conn.get_last_id().unwrap()
            }
        };
        self.set_id(id);
    }
}

impl MedalObject<Connection> for Taskgroup {
    fn save(&mut self, conn: &Connection) {
        if let Some(first_task) = self.tasks.get(0) {
            let query = "SELECT taskgroup.id
                         FROM taskgroup
                         JOIN task
                         ON task.taskgroup = taskgroup.id
                         WHERE contest = ?1
                         AND task.location = ?2";
            conn.query_map_one(query, &[&self.contest, &first_task.location], |row| row.get(0))
                .unwrap_or(None)
                .and_then(|id| {
                    self.set_id(id);
                    Some(())
                })
                .unwrap_or(()); // Err means no entry yet and is expected result
        }

        let id = match self.get_id() {
            Some(id) => {
                let query = "UPDATE taskgroup
201
202
203
                             SET contest = ?1, name = ?2, active = ?3, positionalnumber = ?4
                             WHERE id = ?5";
                conn.execute(query, &[&self.contest, &self.name, &self.active, &self.positionalnumber, &id]).unwrap();
204
205
206
                id
            }
            None => {
207
208
209
                let query = "INSERT INTO taskgroup (contest, name, active, positionalnumber)
                             VALUES (?1, ?2, ?3, ?4)";
                conn.execute(query, &[&self.contest, &self.name, &self.active, &self.positionalnumber]).unwrap();
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
                conn.get_last_id().unwrap()
            }
        };
        self.set_id(id);
        for mut task in &mut self.tasks {
            task.taskgroup = id;
            task.save(conn);
        }
    }
}

impl MedalObject<Connection> for Contest {
    fn save(&mut self, conn: &Connection) {
        let query = "SELECT id
                     FROM contest
                     WHERE location = ?1
                     AND filename = ?2";
        conn.query_map_one(query, &[&self.location, &self.filename], |row| row.get(0))
            .unwrap_or(None)
            .and_then(|id| {
                self.set_id(id);
                Some(())
            })
            .unwrap_or(()); // Err means no entry yet and is expected result

        let id = match self.get_id() {
            Some(id) => {
                let query = "UPDATE contest
238
239
240
241
                             SET location = ?2,filename = ?3, name = ?4, duration = ?5, public = ?6, start_date = ?7,
                                 end_date = ?8, min_grade = ?9, max_grade = ?10, positionalnumber = ?11,
                                 requires_login = ?12, secret = ?13
                             WHERE id = ?1";
242
                conn.execute(query,
243
244
                             &[&id,
                               &self.location,
245
246
247
248
249
250
                               &self.filename,
                               &self.name,
                               &self.duration,
                               &self.public,
                               &self.start,
                               &self.end,
251
252
                               &self.min_grade,
                               &self.max_grade,
253
                               &self.positionalnumber,
254
255
                               &self.requires_login,
                               &self.secret])
256
257
258
259
                    .unwrap();
                id
            }
            None => {
260
                let query = "INSERT INTO contest (location, filename, name, duration, public, start_date, end_date,
261
262
                                                  min_grade, max_grade, positionalnumber, requires_login, secret)
                             VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9, ?10, ?11, ?12)";
263
264
265
266
267
268
269
                conn.execute(query,
                             &[&self.location,
                               &self.filename,
                               &self.name,
                               &self.duration,
                               &self.public,
                               &self.start,
270
271
                               &self.end,
                               &self.min_grade,
272
                               &self.max_grade,
273
274
275
                               &self.positionalnumber,
                               &self.requires_login,
                               &self.secret])
276
277
278
279
280
281
282
283
284
285
286
287
                    .unwrap();
                conn.get_last_id().unwrap()
            }
        };
        self.set_id(id);
        for mut taskgroup in &mut self.taskgroups {
            taskgroup.contest = id;
            taskgroup.save(conn);
        }
    }
}

288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
impl MedalConnection for Connection {
    fn dbtype(&self) -> &'static str { "sqlite_v2" }

    fn migration_already_applied(&self, name: &str) -> bool {
        let create_string = "CREATE TABLE IF NOT EXISTS migrations (name TEXT PRIMARY KEY);";
        self.execute(create_string, &[]).unwrap();

        let query = "SELECT name FROM migrations WHERE name = ?1";
        self.exists(query, &[&name])
    }

    fn apply_migration(&mut self, name: &str, contents: &str) {
        print!("Applying migration `{}` … ", name);

        let tx = self.transaction().unwrap();

        tx.execute_batch(&contents).unwrap();
        tx.execute("INSERT INTO migrations (name) VALUES (?1)", &[&name]).unwrap();

        tx.commit().unwrap();

        println!("OK.");
    }

    // fn get_session<T: ToSql>(&self, key: T, keyname: &str) -> Option<SessionUser> {
    fn get_session(&self, key: &str) -> Option<SessionUser> {
314
315
        let query = "SELECT id, csrf_token, last_login, last_activity, permanent_login, username, password, salt,
                            logincode, email, email_unconfirmed, email_confirmationcode, firstname, lastname, street,
316
                            zip, city, nation, grade, sex, is_admin, is_teacher, managed_by, oauth_provider, oauth_foreign_id
317
318
319
320
321
322
323
324
325
326
327
                     FROM session
                     WHERE session_token = ?1";
        let session = self.query_map_one(query, &[&key], |row| SessionUser { id: row.get(0),
                                                                             session_token: Some(key.to_string()),
                                                                             csrf_token: row.get(1),
                                                                             last_login: row.get(2),
                                                                             last_activity: row.get(3),
                                                                             permanent_login: row.get(4),

                                                                             username: row.get(5),
                                                                             password: row.get(6),
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
                                                                             salt: row.get(7),
                                                                             logincode: row.get(8),
                                                                             email: row.get(9),
                                                                             email_unconfirmed: row.get(10),
                                                                             email_confirmationcode: row.get(11),

                                                                             firstname: row.get(12),
                                                                             lastname: row.get(13),
                                                                             street: row.get(14),
                                                                             zip: row.get(15),
                                                                             city: row.get(16),
                                                                             nation: row.get(17),
                                                                             grade: row.get(18),
                                                                             sex: row.get(19),

343
344
345
                                                                             is_admin: row.get(20),
                                                                             is_teacher: row.get(21),
                                                                             managed_by: row.get(22),
346

347
348
                                                                             oauth_provider: row.get(23),
                                                                             oauth_foreign_id: row.get(24) })
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
                          .ok()??;

        let duration = if session.permanent_login { Duration::days(90) } else { Duration::minutes(90) };
        let now = time::get_time();

        if let Some(last_activity) = session.last_activity {
            if now - last_activity < duration {
                let query = "UPDATE session
                             SET last_activity = ?1
                             WHERE id = ?2";
                self.execute(query, &[&now, &session.id]).unwrap();
                return Some(session);
            } else {
                // Session timed out
                // Should remove session token from session
                return None;
            }
        }
        // last_activity undefined
        // TODO: What should happen here?
        None
    }
    fn save_session(&self, session: SessionUser) {
372
373
374
375
376
377
378
379
380
381
382
383
        self.execute("UPDATE session
                      SET username = ?1,
                          password = ?2,
                          salt = ?3,
                          logincode = ?4,
                          firstname = ?5,
                          lastname = ?6,
                          street = ?7,
                          zip = ?8,
                          city = ?9,
                          grade = ?10,
                          sex = ?11,
384
385
386
387
                          is_admin = ?12,
                          is_teacher = ?13,
                          permanent_login = ?14
                      WHERE id = ?15",
388
389
390
391
392
393
394
395
396
397
                     &[&session.username,
                       &session.password,
                       &session.salt,
                       &session.logincode,
                       &session.firstname,
                       &session.lastname,
                       &session.street,
                       &session.zip,
                       &session.city,
                       &session.grade,
398
                       &session.sex,
399
                       &session.is_admin,
400
                       &session.is_teacher,
401
                       &session.permanent_login,
402
403
404
405
406
407
408
                       &session.id])
            .unwrap();
    }
    fn new_session(&self, session_token: &str) -> SessionUser {
        let csrf_token = helpers::make_csrf_token();

        let now = time::get_time();
409
        let query = "INSERT INTO session (session_token, csrf_token, last_activity, permanent_login, grade, sex,
410
                                          is_teacher)
411
412
                     VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7)";
        self.execute(query, &[&session_token, &csrf_token, &now, &false, &0, &None::<i32>, &false]).unwrap();
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431

        let id = self.get_last_id().expect("Expected to get last row id");

        SessionUser::minimal(id, session_token.to_owned(), csrf_token)
    }
    fn get_session_or_new(&self, key: &str) -> SessionUser {
        let query = "UPDATE session
                     SET session_token = ?1
                     WHERE session_token = ?2";
        self.get_session(&key).ensure_alive().unwrap_or_else(|| {
                                                 // TODO: Factor this out in own function
                                                 // TODO: Should a new session key be generated every time?
                                                 self.execute(query, &[&Option::<String>::None, &key]).unwrap();
                                                 self.new_session(&key)
                                             })
    }

    fn get_user_by_id(&self, user_id: i32) -> Option<SessionUser> {
        let query = "SELECT session_token, csrf_token, last_login, last_activity, permanent_login, username, password,
432
                            salt, logincode, email, email_unconfirmed, email_confirmationcode, firstname, lastname,
433
                            street, zip, city, nation, grade, sex, is_admin, is_teacher, managed_by, oauth_provider,
434
                            oauth_foreign_id
435
436
437
438
439
440
441
442
443
444
445
                     FROM session
                     WHERE id = ?1";
        self.query_map_one(query, &[&user_id], |row| SessionUser { id: user_id,
                                                                   session_token: row.get(0),
                                                                   csrf_token: row.get(1),
                                                                   last_login: row.get(2),
                                                                   last_activity: row.get(3),
                                                                   permanent_login: row.get(4),

                                                                   username: row.get(5),
                                                                   password: row.get(6),
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
                                                                   salt: row.get(7),
                                                                   logincode: row.get(8),
                                                                   email: row.get(9),
                                                                   email_unconfirmed: row.get(10),
                                                                   email_confirmationcode: row.get(11),

                                                                   firstname: row.get(12),
                                                                   lastname: row.get(13),
                                                                   street: row.get(14),
                                                                   zip: row.get(15),
                                                                   city: row.get(16),
                                                                   nation: row.get(17),
                                                                   grade: row.get(18),
                                                                   sex: row.get(19),

461
462
463
                                                                   is_admin: row.get(20),
                                                                   is_teacher: row.get(21),
                                                                   managed_by: row.get(22),
464

465
466
                                                                   oauth_provider: row.get(23),
                                                                   oauth_foreign_id: row.get(24) })
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
            .ok()?
    }

    fn get_user_and_group_by_id(&self, user_id: i32) -> Option<(SessionUser, Option<Group>)> {
        let session = self.get_user_by_id(user_id)?;

        let group_id = match session.managed_by {
            Some(id) => id,
            None => return Some((session, None)),
        };

        let query = "SELECT name, groupcode, tag, admin
                     FROM usergroup
                     WHERE id = ?1";
        let res = self.query_map_one(query, &[&group_id], |row| Group { id: Some(group_id),
                                                                        name: row.get(0),
                                                                        groupcode: row.get(1),
                                                                        tag: row.get(2),
                                                                        admin: row.get(3),
                                                                        members: Vec::new() })
                      .ok()?;
        match res {
            Some(group) => Some((session, Some(group))),
            _ => Some((session, None)),
        }
    }

    //TODO: use session
    fn login(&self, _session: Option<&str>, username: &str, password: &str) -> Result<String, ()> {
        let query = "SELECT id, password, salt
                     FROM session
                     WHERE username = ?1";
        self.query_map_one(query, &[&username], |row| {
                let (id, password_hash, salt): (i32, Option<String>, Option<String>) =
                    (row.get(0), row.get(1), row.get(2));

                //password_hash ist das, was in der Datenbank steht
                if helpers::verify_password(&password,
505
506
                                            &salt.ok_or_else(|| println!("salt from database empty"))?,
                                            &password_hash.ok_or_else(|| println!("password from database empty"))?)
507
508
509
510
511
                {
                    // TODO: fail more pleasantly
                    // Login okay, update session now!

                    let session_token = helpers::make_session_token();
512
                    let csrf_token = helpers::make_csrf_token();
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
                    let now = time::get_time();

                    let query = "UPDATE session
                                 SET session_token = ?1, csrf_token = ?2, last_login = ?3, last_activity = ?3
                                 WHERE id = ?4";
                    self.execute(query, &[&session_token, &csrf_token, &now, &id]).unwrap();

                    Ok(session_token)
                } else {
                    Err(())
                }
            })
            .map_err(|_| ())?
            .ok_or(())?
    }

    //TODO: use session
    fn login_with_code(&self, _session: Option<&str>, logincode: &str) -> Result<String, ()> {
531
532
533
        let query = "SELECT id
                     FROM session
                     WHERE logincode = ?1";
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
        self.query_map_one(query, &[&logincode], |row| {
                // Login okay, update session now!
                let id: i32 = row.get(0);

                let session_token = helpers::make_session_token();
                let csrf_token = helpers::make_csrf_token();
                let now = time::get_time();

                let query = "UPDATE session
                             SET session_token = ?1, csrf_token = ?2, last_login = ?3, last_activity = ?3
                             WHERE id = ?4";
                self.execute(query, &[&session_token, &csrf_token, &now, &id]).unwrap();

                session_token
            })
            .map_err(|_| ())?
            .ok_or(())
    }

    //TODO: use session
554
555
    fn login_foreign(&self, _session: Option<&str>, provider_id: &str, foreign_id: &str,
                     (is_teacher, is_admin, firstname, lastname, sex): (bool, bool, &str, &str, Option<i32>))
556
557
558
559
560
561
562
563
                     -> Result<String, ()>
    {
        let session_token = helpers::make_session_token();
        let csrf_token = helpers::make_csrf_token();
        let now = time::get_time();

        let query = "SELECT id
                     FROM session
564
565
566
                     WHERE oauth_foreign_id = ?1
                           AND oauth_provider = ?2";
        match self.query_map_one(query, &[&foreign_id, &provider_id], |row| -> i32 { row.get(0) }) {
567
568
            Ok(Some(id)) => {
                let query = "UPDATE session
569
                             SET session_token = ?1, csrf_token = ?2, last_login = ?3, last_activity = ?3,
570
571
                                 is_teacher = ?4, is_admin = ?5,  firstname = ?6, lastname = ?7, sex = ?8
                             WHERE id = ?9";
572
573
574
575
576
577
578
579
580
581
582
                self.execute(query,
                             &[&session_token,
                               &csrf_token,
                               &now,
                               &is_teacher,
                               &is_admin,
                               &firstname,
                               &lastname,
                               &sex,
                               &id])
                    .unwrap();
583
584
585
586
587
588

                Ok(session_token)
            }
            // Add!
            _ => {
                let query = "INSERT INTO session (session_token, csrf_token, last_login, last_activity,
589
                                                  permanent_login, grade, sex, is_teacher, is_admin, oauth_foreign_id,
590
                                                  oauth_provider, firstname, lastname)
591
                             VALUES (?1, ?2, ?3, ?3, ?4, ?5, ?6, ?7, ?8, ?9, ?10, ?11, ?12)";
592
593
594
595
596
                self.execute(query,
                             &[&session_token,
                               &csrf_token,
                               &now,
                               &false,
597
                               &(if is_teacher { 255 } else { 0 }),
598
                               &sex,
599
                               &is_teacher,
600
                               &is_admin,
601
                               &foreign_id,
602
                               &provider_id,
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
                               &firstname,
                               &lastname])
                    .unwrap();

                Ok(session_token)
            }
        }
    }

    //TODO: use session
    fn create_user_with_groupcode(&self, _session: Option<&str>, groupcode: &str) -> Result<String, ()> {
        let query = "SELECT id
                     FROM usergroup
                     WHERE groupcode = ?1";
        let group_id =
            self.query_map_one(query, &[&groupcode], |row| -> i32 { row.get(0) }).map_err(|_| ())?.ok_or(())?;

        // Login okay, create session!
        let session_token = helpers::make_session_token();
        let csrf_token = helpers::make_csrf_token();
        let login_code = helpers::make_login_code(); // TODO: check for collisions
        let now = time::get_time();

        let query = "INSERT INTO session (session_token, csrf_token, last_login, last_activity, permanent_login,
627
                                          logincode, grade, sex, is_teacher, managed_by)
628
                     VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9, ?10)";
629
630
631
632
633
634
635
636
637
638
639
640
        self.execute(query,
                     &[&session_token,
                       &csrf_token,
                       &now,
                       &now,
                       &false,
                       &login_code,
                       &0,
                       &None::<i32>,
                       &false,
                       &group_id])
            .unwrap();
641
642
643
644
645
646
647
648
649
650
651
652

        Ok(session_token)
    }

    fn create_group_with_users(&self, mut group: Group) {
        // Generate group ID:
        group.save(self);

        for user in group.members {
            let csrf_token = helpers::make_csrf_token();
            let login_code = helpers::make_login_code(); // TODO: check for collisions

653
            let query = "INSERT INTO session (firstname, lastname, csrf_token, permanent_login, logincode, grade, sex,
654
                                              is_teacher, managed_by)
655
                         VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9)";
656
657
658
659
660
661
662
            self.execute(query,
                         &[&user.firstname,
                           &user.lastname,
                           &csrf_token,
                           &false,
                           &login_code,
                           &user.grade,
663
                           &None::<i32>,
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
                           &false,
                           &group.id])
                .unwrap();
        }
    }

    fn logout(&self, session: &str) {
        let query = "UPDATE session
                     SET session_token = NULL
                     WHERE session_token = ?1";
        self.execute(query, &[&session]).unwrap();
    }

    fn load_submission(&self, session: &SessionUser, task: i32, subtask: Option<&str>) -> Option<Submission> {
        match subtask {
            None => {
                let query = "SELECT id, grade, validated, nonvalidated_grade, value, date, needs_validation
                             FROM submission
                             WHERE task = ?1
                             AND session = ?2
                             ORDER BY id DESC
                             LIMIT 1";
                self.query_map_one(query, &[&task, &session.id], |row| Submission { id: Some(row.get(0)),
                                                                                    task: task,
                                                                                    session_user: session.id,
                                                                                    grade: row.get(1),
                                                                                    validated: row.get(2),
                                                                                    nonvalidated_grade: row.get(3),
                                                                                    subtask_identifier: None,
                                                                                    value: row.get(4),
                                                                                    date: row.get(5),
                                                                                    needs_validation: row.get(6) })
                    .ok()?
            }
            Some(subtask_id) => {
                let query = "SELECT id, grade, validated, nonvalidated_grade, value, date, needs_validation
                             FROM submission
                             WHERE task = ?1
                             AND session = ?2
                             AND subtask_identifier = ?3
                             ORDER BY id DESC
                             LIMIT 1";
                self.query_map_one(query, &[&task, &session.id, &subtask_id], |row| {
                        Submission { id: Some(row.get(0)),
                                     task: task,
                                     session_user: session.id,
                                     grade: row.get(1),
                                     validated: row.get(2),
                                     nonvalidated_grade: row.get(3),
                                     subtask_identifier: Some(subtask_id.to_string()),
                                     value: row.get(4),
                                     date: row.get(5),
                                     needs_validation: row.get(6) }
                    })
                    .ok()?
            }
        }
    }
722
723
724
725
726
727
728
729
    fn get_all_submissions(&self, session_id: i32, task: i32, subtask: Option<&str>) -> Vec<Submission> {
        match subtask {
            None => {
                let query = "SELECT id, grade, validated, nonvalidated_grade, value, date, needs_validation
                             FROM submission
                             WHERE task = ?1
                             AND session = ?2";
                self.query_map_many(query, &[&task, &session_id], |row| Submission { id: Some(row.get(0)),
730
731
732
733
734
735
736
737
                                                                                     task: task,
                                                                                     session_user: session_id,
                                                                                     grade: row.get(1),
                                                                                     validated: row.get(2),
                                                                                     nonvalidated_grade: row.get(3),
                                                                                     subtask_identifier: None,
                                                                                     value: row.get(4),
                                                                                     date: row.get(5),
738
739
740
                                                                                     needs_validation: row.get(6) })
                    .unwrap()
            }
741
            _ => unimplemented!(),
742
743
        }
    }
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
    fn submit_submission(&self, mut submission: Submission) {
        submission.save(self);

        let mut grade = self.get_grade_by_submission(submission.id.unwrap());
        if grade.grade.is_none() || submission.grade > grade.grade.unwrap() {
            grade.grade = Some(submission.grade);
            grade.validated = false;
            grade.save(self);
        }
    }
    fn get_grade_by_submission(&self, submission_id: i32) -> Grade {
        let query = "SELECT grade.taskgroup, grade.session, grade.grade, grade.validated
                     FROM grade
                     JOIN task ON grade.taskgroup = task.taskgroup
                     JOIN submission ON task.id = submission.task
                     AND grade.session = submission.session
                     WHERE submission.id = ?1";
761
762
763
764
765
766
767
        self.query_map_one(query, &[&submission_id], |row| Grade { taskgroup: row.get(0),
                                                                   user: row.get(1),
                                                                   grade: row.get(2),
                                                                   validated: row.get(3) })
            .unwrap_or(None)
            .unwrap_or_else(|| {
                let query = "SELECT task.taskgroup, submission.session
768
769
770
                         FROM submission
                         JOIN task ON task.id = submission.task
                         WHERE submission.id = ?1";
771
772
773
774
775
776
777
                self.query_map_one(query, &[&submission_id], |row| Grade { taskgroup: row.get(0),
                                                                           user: row.get(1),
                                                                           grade: None,
                                                                           validated: false })
                    .unwrap()
                    .unwrap() // should this unwrap?
            })
778
779
780
781
782
783
784
    }

    fn get_contest_groups_grades(&self, session_id: i32, contest_id: i32)
                                 -> (Vec<String>, Vec<(Group, Vec<(UserInfo, Vec<Grade>)>)>) {
        let query = "SELECT id, name
                     FROM taskgroup
                     WHERE contest = ?1
785
786
                     AND active = ?2
                     ORDER BY positionalnumber";
787
        let tasknames: Vec<(i32, String)> =
788
            self.query_map_many(query, &[&contest_id, &true], |row| (row.get(0), row.get(1))).unwrap();
789
790
791
792
793
794
795
796

        let mut taskindex: ::std::collections::BTreeMap<i32, usize> = ::std::collections::BTreeMap::new();

        let n_tasks = tasknames.len();
        for (index, (i, _)) in tasknames.iter().enumerate() {
            taskindex.insert(*i, index);
        }

797
798
        let query = "SELECT grade.taskgroup, grade.session, grade.grade, grade.validated, usergroup.id, usergroup.name,
                            usergroup.groupcode, usergroup.tag, student.id, student.username, student.logincode,
799
                            student.firstname, student.lastname, student.grade AS sgrade
800
801
802
803
804
805
                     FROM grade
                     JOIN taskgroup ON grade.taskgroup = taskgroup.id
                     JOIN session AS student ON grade.session = student.id
                     JOIN usergroup ON student.managed_by = usergroup.id
                     WHERE usergroup.admin = ?1
                     AND taskgroup.contest = ?2
806
                     AND taskgroup.active = ?3
807
808
                     ORDER BY usergroup.id, sgrade, student.lastname, student.firstname, student.id,
                              taskgroup.positionalnumber";
809
        let gradeinfo =
810
            self.query_map_many(query, &[&session_id, &contest_id, &true], |row| {
811
812
813
814
815
816
817
818
819
820
821
                    (Grade { taskgroup: row.get(0), user: row.get(1), grade: row.get(2), validated: row.get(3) },
                     Group { id: Some(row.get(4)),
                             name: row.get(5),
                             groupcode: row.get(6),
                             tag: row.get(7),
                             admin: session_id,
                             members: Vec::new() },
                     UserInfo { id: row.get(8),
                                username: row.get(9),
                                logincode: row.get(10),
                                firstname: row.get(11),
822
                                lastname: row.get(12),
Robert Czechowski's avatar
Robert Czechowski committed
823
                                grade: row.get(13) })
824
825
                })
                .unwrap();
826
        let mut gradeinfo_iter = gradeinfo.iter();
827
828

        if let Some(t /*Ok((grade, mut group, mut userinfo))*/) = gradeinfo_iter.next() {
829
            let (grade, mut group, mut userinfo) = t.clone();
830
831
832
833
834
835

            let mut grades: Vec<Grade> = vec![Default::default(); n_tasks];
            let mut users: Vec<(UserInfo, Vec<Grade>)> = Vec::new();
            let mut groups: Vec<(Group, Vec<(UserInfo, Vec<Grade>)>)> = Vec::new();

            let index = grade.taskgroup;
836
            grades[taskindex[&index]] = grade;
837
838

            for ggu in gradeinfo_iter {
839
840
                let (g, gr, ui) = ggu;
                if gr.id != group.id {
841
842
                    users.push((userinfo, grades));
                    userinfo = ui.clone();
843
844
                    grades = vec![Default::default(); n_tasks];

845
846
                    groups.push((group, users));
                    group = gr.clone();
847
848
                    users = Vec::new();
                } else if ui.id != userinfo.id {
849
850
                    users.push((userinfo, grades));
                    userinfo = ui.clone();
851
                    grades = vec![Default::default(); n_tasks];
852
                }
853
854
                let index = g.taskgroup;
                grades[taskindex[&index]] = *g;
855
            }
856
857
            users.push((userinfo, grades));
            groups.push((group, users));
858
859
860
861
862
863
864
865
866
867

            (tasknames.iter().map(|(_, name)| name.clone()).collect(), groups)
        } else {
            (Vec::new(), Vec::new()) // should those be default filled?
        }
    }
    fn get_contest_user_grades(&self, session_token: &str, contest_id: i32) -> Vec<Grade> {
        let query = "SELECT id, name
                     FROM taskgroup
                     WHERE contest = ?1
868
869
                     AND active = ?2
                     ORDER BY positionalnumber";
870
        let tasknames: Vec<(i32, String)> =
871
            self.query_map_many(query, &[&contest_id, &true], |row| (row.get(0), row.get(1))).unwrap();
872
873
874
875
876
877
878
        let mut taskindex: ::std::collections::BTreeMap<i32, usize> = ::std::collections::BTreeMap::new();

        let n_tasks = tasknames.len();
        for (index, (i, _)) in tasknames.iter().enumerate() {
            taskindex.insert(*i, index);
        }

879
880
881
882
883
884
        let query = "SELECT grade.taskgroup, grade.session, grade.grade, grade.validated
                     FROM grade
                     JOIN taskgroup ON grade.taskgroup = taskgroup.id
                     JOIN session ON session.id = grade.session
                     WHERE session.session_token = ?1
                     AND taskgroup.contest = ?2
885
886
                     AND taskgroup.active = ?3
                     ORDER BY taskgroup.positionalnumber";
887
        let gradeinfo =
888
            self.query_map_many(query, &[&session_token, &contest_id, &true], |row| Grade { taskgroup: row.get(0),
Robert Czechowski's avatar
Robert Czechowski committed
889
890
891
                                                                                            user: row.get(1),
                                                                                            grade: row.get(2),
                                                                                            validated: row.get(3) })
892
893
                .unwrap();
        let gradeinfo_iter = gradeinfo.iter();
894
895
896
897
898

        let mut grades: Vec<Grade> = vec![Default::default(); n_tasks];

        for g in gradeinfo_iter {
            let index = g.taskgroup;
899
            grades[taskindex[&index]] = *g;
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
        }

        grades
    }

    fn get_taskgroup_user_grade(&self, session_token: &str, taskgroup_id: i32) -> Grade {
        let query = "SELECT grade.taskgroup, grade.session, grade.grade, grade.validated
                     FROM grade
                     JOIN session ON session.id = grade.session
                     WHERE session.session_token = ?1
                     AND grade.taskgroup = ?2";
        self.query_map_one(query, &[&session_token, &taskgroup_id], |row| Grade { taskgroup: row.get(0),
                                                                                  user: row.get(1),
                                                                                  grade: row.get(2),
                                                                                  validated: row.get(3) })
            .unwrap_or(None)
            .unwrap_or_default()
    }

919
    /* Warning: This function makes no use of rusts type safety. Handle with care when changeing */
920
921
922
    fn export_contest_results_to_file(&self, contest_id: i32, taskgroups: &[(i32, String)], filename: &str) {
        use std::fs::OpenOptions;
        let file = OpenOptions::new().write(true).create(true).truncate(true).open("foo.txt").unwrap();
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
        let mut headers = vec!["id",
                               "username",
                               "logincode",
                               "oauth_foreign_id",
                               "oauth_provider",
                               "firstname",
                               "lastname",
                               "grade",
                               "sex",
                               "is_teacher",
                               "group_id",
                               "group_name",
                               "group_tag",
                               "teacher_id",
                               "teacher_firstname",
                               "teacher_lastname",
                               "teacher_oauth_foreign_id",
                               "teacher_oauth_provider",
                               "contest_id",
                               "start_date"];
943
944
945
946
947

        let mut select_part = String::new();
        let mut join_part = String::new();
        let mut join_params = Vec::<&dyn rusqlite::types::ToSql>::new();
        join_params.push(&contest_id);
948
949

        for (n, (id, name)) in taskgroups.iter().enumerate() {
950
951
952
953
954
            select_part.push_str(&format!(",\n g{}.grade ", n));
            join_part.push_str(&format!("\n LEFT JOIN grade AS g{} ON session.id = g{}.session AND g{}.taskgroup = ?{} ", n, n, n, n + 2));
            join_params.push(id);
            headers.push(&name);
        }
955

956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
        let query = format!("SELECT session.id,
                                    session.username,
                                    session.logincode,
                                    session.oauth_foreign_id,
                                    session.oauth_provider,
                                    session.firstname,
                                    session.lastname,
                                    session.grade,
                                    session.sex,
                                    session.is_teacher,
                                    session.managed_by,
                                    usergroup.name,
                                    usergroup.tag,
                                    teacher.id,
                                    teacher.firstname,
                                    teacher.lastname,
                                    teacher.oauth_foreign_id,
                                    teacher.oauth_provider,
                                    participation.contest,
                                    participation.start_date
                                    {}
                             FROM participation
                             JOIN session ON participation.session = session.id
                             {}
                             LEFT JOIN usergroup ON session.managed_by = usergroup.id
                             LEFT JOIN session AS teacher ON usergroup.admin = teacher.id
982
983
                             WHERE participation.contest = ?1",
                            select_part, join_part);
984
985

        use csv::Writer;
986
        let mut wtr = Writer::from_writer(file);
987
988
        wtr.serialize(&headers).unwrap();
        wtr.flush().unwrap();
989

990
991
        let file = wtr.into_inner().unwrap();
        let mut wtr = Writer::from_writer(file);
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022

        self.query_map_many(&query, join_params.as_slice(), |row| {
                let mut points = Vec::new();
                for i in 20..20 + taskgroups.len() {
                    points.push(row.get::<_, Option<i32>>(i));
                }
                wtr.serialize(((row.get::<_, i32>(0),
                                row.get::<_, Option<String>>(1),
                                row.get::<_, Option<String>>(2),
                                row.get::<_, Option<String>>(3),
                                row.get::<_, Option<String>>(4),
                                row.get::<_, Option<String>>(5),
                                row.get::<_, Option<String>>(6),
                                row.get::<_, i32>(7),
                                row.get::<_, Option<i32>>(8),
                                row.get::<_, bool>(9)),
                               (row.get::<_, Option<i32>>(10),
                                row.get::<_, Option<String>>(11),
                                row.get::<_, Option<String>>(12),
                                row.get::<_, Option<i32>>(13),
                                row.get::<_, Option<String>>(14),
                                row.get::<_, Option<String>>(15),
                                row.get::<_, Option<String>>(16),
                                row.get::<_, Option<String>>(17)),
                               row.get::<_, Option<i32>>(18),
                               row.get::<_, Option<String>>(19),
                               points))
                   .unwrap();
                ()
            })
            .unwrap();
1023
        wtr.flush().unwrap();
1024
1025
    }

1026
    fn get_contest_list(&self) -> Vec<Contest> {
1027
        let query = "SELECT id, location, filename, name, duration, public, start_date, end_date, min_grade, max_grade,
1028
                            positionalnumber, requires_login, secret
1029
                     FROM contest
1030
                     ORDER BY positionalnumber";
1031
1032
1033
1034
1035
1036
1037
1038
        self.query_map_many(query, &[], |row| Contest { id: Some(row.get(0)),
                                                        location: row.get(1),
                                                        filename: row.get(2),
                                                        name: row.get(3),
                                                        duration: row.get(4),
                                                        public: row.get(5),
                                                        start: row.get(6),
                                                        end: row.get(7),
1039
1040
                                                        min_grade: row.get(8),
                                                        max_grade: row.get(9),
1041
                                                        positionalnumber: row.get(10),
1042
1043
                                                        requires_login: row.get(11),
                                                        secret: row.get(12),
1044
1045
1046
1047
1048
                                                        taskgroups: Vec::new() })
            .unwrap()
    }

    fn get_contest_by_id(&self, contest_id: i32) -> Contest {
1049
1050
        let query = "SELECT location, filename, name, duration, public, start_date, end_date, min_grade, max_grade,
                            requires_login, secret
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
                     FROM contest
                     WHERE id = ?1";
        self.query_map_one(query, &[&contest_id], |row| Contest { id: Some(contest_id),
                                                                  location: row.get(0),
                                                                  filename: row.get(1),
                                                                  name: row.get(2),
                                                                  duration: row.get(3),
                                                                  public: row.get(4),
                                                                  start: row.get(5),
                                                                  end: row.get(6),
1061
1062
                                                                  min_grade: row.get(7),
                                                                  max_grade: row.get(8),
1063
                                                                  positionalnumber: None,
1064
1065
                                                                  requires_login: row.get(9),
                                                                  secret: row.get(10),
1066
1067
1068
1069
1070
1071
1072
                                                                  taskgroups: Vec::new() })
            .unwrap()
            .unwrap() // TODO: Should return Option?
    }

    fn get_contest_by_id_complete(&self, contest_id: i32) -> Contest {
        let query = "SELECT contest.location, contest.filename, contest.name, contest.duration, contest.public,
1073
1074
1075
                            contest.start_date, contest.end_date, contest.min_grade, contest.max_grade,
                            contest.requires_login, contest.secret, taskgroup.id, taskgroup.name, task.id,
                            task.location, task.stars
1076
1077
1078
                     FROM contest
                     JOIN taskgroup ON contest.id = taskgroup.contest
                     JOIN task ON taskgroup.id = task.taskgroup
1079
                     WHERE contest.id = ?1
1080
                     AND taskgroup.active = ?2
1081
                     ORDER BY taskgroup.positionalnumber";
1082
        let taskgroupcontest =
1083
            self.query_map_many(query, &[&contest_id, &true], |row| {
1084
1085
1086
1087
1088
1089
1090
1091
                    (Contest { id: Some(contest_id),
                               location: row.get(0),
                               filename: row.get(1),
                               name: row.get(2),
                               duration: row.get(3),
                               public: row.get(4),
                               start: row.get(5),
                               end: row.get(6),
1092
1093
                               min_grade: row.get(7),
                               max_grade: row.get(8),
1094
                               positionalnumber: None,
1095
1096
                               requires_login: row.get(9),
                               secret: row.get(10),
1097
                               taskgroups: Vec::new() },
1098
                     Taskgroup { id: Some(row.get(11)),
1099
                                 contest: contest_id,
1100
                                 name: row.get(12),
1101
                                 active: true,
1102
1103
                                 positionalnumber: None,
                                 tasks: Vec::new() },
1104
                     Task { id: Some(row.get(13)), taskgroup: row.get(11), location: row.get(14), stars: row.get(15) })
1105
1106
                })
                .unwrap();
1107
        let mut taskgroupcontest_iter = taskgroupcontest.into_iter();
1108

1109
        let (mut contest, mut taskgroup, task) = taskgroupcontest_iter.next().unwrap();
1110
1111
        taskgroup.tasks.push(task);
        for tgc in taskgroupcontest_iter {
1112
1113
1114
1115
            let (_, tg, t) = tgc;
            if tg.id != taskgroup.id {
                contest.taskgroups.push(taskgroup);
                taskgroup = tg;
1116
            }
1117
            taskgroup.tasks.push(t);
1118
1119
1120
1121
1122
1123
1124
        }
        contest.taskgroups.push(taskgroup);
        contest
    }

    fn get_contest_by_id_partial(&self, contest_id: i32) -> Contest {
        let query = "SELECT contest.location, contest.filename, contest.name, contest.duration, contest.public,
1125
1126
                            contest.start_date, contest.end_date, contest.min_grade, contest.max_grade,
                            contest.requires_login, contest_secret, taskgroup.id, taskgroup.name
1127
1128
                     FROM contest
                     JOIN taskgroup ON contest.id = taskgroup.contest
1129
1130
1131
                     WHERE contest.id = ?1
                     AND taskgroup.active = ?2";
        let taskgroupcontest = self.query_map_many(query, &[&contest_id, &true], |row| {
1132
1133
1134
1135
1136
1137
1138
1139
                                       (Contest { id: Some(contest_id),
                                                  location: row.get(0),
                                                  filename: row.get(1),
                                                  name: row.get(2),
                                                  duration: row.get(3),
                                                  public: row.get(4),
                                                  start: row.get(5),
                                                  end: row.get(6),
1140
1141
                                                  min_grade: row.get(7),
                                                  max_grade: row.get(8),
1142
                                                  positionalnumber: None,
1143
1144
                                                  requires_login: row.get(9),
                                                  secret: row.get(10),
1145
                                                  taskgroups: Vec::new() },
1146
                                        Taskgroup { id: Some(row.get(11)),
1147
                                                    contest: contest_id,
1148
                                                    name: row.get(12),
1149
                                                    active: true,
1150
1151
1152
1153
                                                    positionalnumber: None,
                                                    tasks: Vec::new() })
                                   })
                                   .unwrap();
1154
        let mut taskgroupcontest_iter = taskgroupcontest.into_iter();
1155

1156
        let (mut contest, taskgroup) = taskgroupcontest_iter.next().unwrap();
1157
1158
        contest.taskgroups.push(taskgroup);
        for tgc in taskgroupcontest_iter {
1159
1160
            let (_, tg) = tgc;
            contest.taskgroups.push(tg);
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
        }
        contest
    }

    fn get_participation(&self, session: &str, contest_id: i32) -> Option<Participation> {
        let query = "SELECT session, start_date
                     FROM participation
                     JOIN session ON session.id = session
                     WHERE session.session_token = ?1
                     AND contest = ?2";
        self.query_map_one(query, &[&session, &contest_id], |row| Participation { contest: contest_id,
                                                                                  user: row.get(0),
                                                                                  start: row.get(1) })
            .ok()?
    }
1176
1177
1178
1179
1180
1181
1182
1183

    fn get_all_participations_complete(&self, session_id: i32) -> Vec<(Participation, Contest)> {
        let query = "SELECT participation.start_date, contest.id, location, filename, name, duration, public,
                            contest.start_date, end_date, min_grade, max_grade, requires_login, secret
                     FROM participation
                     JOIN contest ON participation.contest = contest.id
                     WHERE participation.session = ?1";
        self.query_map_many(query, &[&session_id], |row| {
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
                (Participation { contest: row.get(1), user: session_id, start: row.get(0) },
                 Contest { id: Some(row.get(1)),
                           location: row.get(2),
                           filename: row.get(3),
                           name: row.get(4),
                           duration: row.get(5),
                           public: row.get(6),
                           start: row.get(7),
                           end: row.get(8),
                           min_grade: row.get(9),
                           max_grade: row.get(10),
                           positionalnumber: None,
                           requires_login: row.get(11),
                           secret: row.get(12),
                           taskgroups: Vec::new() })
            })
            .unwrap()
1201
1202
    }

1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
    fn new_participation(&self, session: &str, contest_id: i32) -> Result<Participation, ()> {
        let query = "SELECT session, start_date
                     FROM participation
                     JOIN session ON session.id = session
                     WHERE session.session_token = ?1
                     AND contest = ?2";
        match self.query_map_one(query, &[&session, &contest_id], |_| {}).map_err(|_| ())? {
            Some(()) => Err(()),
            None => {
                let now = time::get_time();
                self.execute(
                             "INSERT INTO participation (contest, session, start_date)
                     SELECT ?1, id, ?2 FROM session WHERE session_token = ?3",
                             &[&contest_id, &now, &session],
                )
                    .unwrap();

                Ok(self.get_participation(session, contest_id).unwrap()) // TODO: This errors if not logged in …
            }
        }
    }
    fn get_task_by_id(&self, task_id: i32) -> Task {
        let query = "SELECT location, stars, taskgroup
                     FROM task
                     WHERE id = ?1";
        self.query_map_one(query, &[&task_id], |row| Task { id: Some(task_id),
                                                            taskgroup: row.get(2),
                                                            location: row.get(0),
                                                            stars: row.get(1) })
            .unwrap()
            .unwrap()
    }
    fn get_task_by_id_complete(&self, task_id: i32) -> (Task, Taskgroup, Contest) {
1236
1237
        let query = "SELECT task.location, task.stars, taskgroup.id, taskgroup.name, taskgroup.active, contest.id,
                            contest.location, contest.filename, contest.name, contest.duration, contest.public,
1238
1239
                            contest.start_date, contest.end_date, contest.min_grade, contest.max_grade,
                            contest.requires_login, contest.secret
1240
1241
1242
1243
1244
1245
                     FROM contest
                     JOIN taskgroup ON taskgroup.contest = contest.id
                     JOIN task ON task.taskgroup = taskgroup.id
                     WHERE task.id = ?1";
        self.query_map_one(query, &[&task_id], |row| {
                (Task { id: Some(task_id), taskgroup: row.get(2), location: row.get(0), stars: row.get(1) },
1246
                 Taskgroup { id: Some(row.get(2)),
1247
                             contest: row.get(5),
1248
                             name: row.get(3),
1249
                             active: row.get(4),
1250
1251
                             positionalnumber: None,
                             tasks: Vec::new() },
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
                 Contest { id: Some(row.get(5)),
                           location: row.get(6),
                           filename: row.get(7),
                           name: row.get(8),
                           duration: row.get(9),
                           public: row.get(10),
                           start: row.get(11),
                           end: row.get(12),
                           min_grade: row.get(13),
                           max_grade: row.get(14),
1262
                           positionalnumber: None,
1263
1264
                           requires_login: row.get(15),
                           secret: row.get(16),
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
                           taskgroups: Vec::new() })
            })
            .unwrap()
            .unwrap()
    }

    fn get_submission_to_validate(&self, tasklocation: &str, subtask: Option<&str>) -> i32 {
        match subtask {
            Some(st) => {
                let query = "SELECT id
                             FROM submission
                             JOIN task ON submission.task = task.id
                             WHERE task.location = ?1
                             AND subtask_identifier = ?2
                             AND needs_validation = 1
                             LIMIT 1";
                self.query_map_one(query, &[&tasklocation, &st], |row| row.get(0)).unwrap().unwrap()
            }
            None => {
                let query = "SELECT id
                             FROM submission
                             JOIN task ON submission.task = task.id
                             WHERE task.location = ?1
                             AND needs_validation = 1
                             LIMIT 1";
                self.query_map_one(query, &[&tasklocation], |row| row.get(0)).unwrap().unwrap()
            }
        }
    }

    fn find_next_submission_to_validate(&self, userid: i32, taskgroupid: i32) {
        let query = "SELECT id, validated
                     FROM submission
                     JOIN task ON submission.task = task.id
                     WHERE task.taskgroup = ?1
                     AND submission.session = ?2
                     ORDER BY value DESC id DESC
                     LIMIT 1";
        let (id, validated): (i32, bool) =
            self.query_map_one(query, &[&taskgroupid, &userid], |row| (row.get(0), row.get(1))).unwrap().unwrap();
        if !validated {
            let query = "UPDATE submission
                         SET needs_validation = 1
                         WHERE id = ?1";
            self.execute(query, &[&id]).unwrap();
        }
    }

    fn add_group(&self, group: &mut Group) { group.save(self); }

    fn get_groups(&self, session_id: i32) -> Vec<Group> {
        let query = "SELECT id, name, groupcode, tag
                     FROM usergroup
                     WHERE admin = ?1";
        self.query_map_many(query, &[&session_id], |row| Group { id: Some(row.get(0)),
                                                                 name: row.get(1),
                                                                 groupcode: row.get(2),
                                                                 tag: row.get(3),
                                                                 admin: session_id,
                                                                 members: Vec::new() })
            .unwrap()
    }
    fn get_groups_complete(&self, _session_id: i32) -> Vec<Group> {
        unimplemented!();
    }
    fn get_group_complete(&self, group_id: i32) -> Option<Group> {
        let query = "SELECT name, groupcode, tag, admin
                     FROM usergroup
                     WHERE id  = ?1";
        let mut group = self.query_map_one(query, &[&group_id], |row| Group { id: Some(group_id),
                                                                              name: row.get(0),
                                                                              groupcode: row.get(1),
                                                                              tag: row.get(2),
                                                                              admin: row.get(3),
                                                                              members: Vec::new() })
                            .unwrap()
                            .unwrap(); // TODO handle error

        let query = "SELECT id, session_token, csrf_token, last_login, last_activity, permanent_login, username,
                            password, logincode, email, email_unconfirmed, email_confirmationcode, firstname, lastname,
1345
                            street, zip, city, nation, grade, sex, is_admin, is_teacher, oauth_provider, oauth_foreign_id, salt
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
                     FROM session
                     WHERE managed_by = ?1";
        group.members = self.query_map_many(query, &[&group_id], |row| SessionUser { id: row.get(0),
                                                                                     session_token: row.get(1),
                                                                                     csrf_token: row.get(2),
                                                                                     last_login: row.get(3),
                                                                                     last_activity: row.get(4),
                                                                                     permanent_login: row.get(5),

                                                                                     username: row.get(6),
                                                                                     password: row.get(7),
                                                                                     salt: row.get(22),
                                                                                     logincode: row.get(8),
                                                                                     email: row.get(9),
                                                                                     email_unconfirmed: row.get(10),
                                                                                     email_confirmationcode:
                                                                                         row.get(11),

                                                                                     firstname: row.get(12),
                                                                                     lastname: row.get(13),
                                                                                     street: row.get(14),
                                                                                     zip: row.get(15),
                                                                                     city: row.get(16),
                                                                                     nation: row.get(17),
                                                                                     grade: row.get(18),
1371
                                                                                     sex: row.get(19),
1372

1373
1374
                                                                                     is_admin: row.get(20),
                                                                                     is_teacher: row.get(21),
1375
1376
                                                                                     managed_by: Some(group_id),

1377
1378
                                                                                     oauth_provider: row.get(22),
                                                                                     oauth_foreign_id: row.get(23) })
1379
1380
1381
                            .unwrap();
        Some(group)
    }
1382
    fn get_search_users(&self,
1383
1384
                        (s_id, s_firstname, s_lastname, s_logincode, s_groupcode, s_pms_id): (Option<i32>,
                         Option<String>,
1385
1386
1387
1388
                         Option<String>,
                         Option<String>,
                         Option<String>,
                         Option<String>))
1389
                        -> Result<Vec<(i32, String, String)>, Vec<(i32, String, String)>>
1390
1391
1392
1393
1394
1395
    {
        if let Some(id) = s_id {
            let query = "SELECT id, firstname, lastname
                         FROM session
                         WHERE id = ?1
                         LIMIT 30";
1396
            Ok(self.query_map_many(query, &[&id], |row| (row.get(0), row.get(1), row.get(2))).unwrap())
1397
1398
1399
1400
1401
        } else if let Some(logincode) = s_logincode {
            let query = "SELECT id, firstname, lastname
                         FROM session
                         WHERE logincode = ?1
                         LIMIT 30";
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
            Ok(self.query_map_many(query, &[&logincode], |row| (row.get(0), row.get(1), row.get(2))).unwrap())
        } else if let Some(groupcode) = s_groupcode {
            let query = "SELECT id, name, tag
                         FROM usergroup
                         WHERE groupcode = ?1
                         LIMIT 30";
            Err(self.query_map_many(query, &[&groupcode], |row| {
                        (row.get(0),
                         format!("Gruppe: {}", row.get::<_, String>(1)),
                         format!("(Marker: {})", row.get::<_, String>(2)))
                    })
                    .unwrap())
1414
1415
1416
1417
1418
        } else if let Some(pms_id) = s_pms_id {
            let query = "SELECT id, firstname, lastname
                         FROM session
                         WHERE oauth_foreign_id = ?1
                         LIMIT 30";
1419
            Ok(self.query_map_many(query, &[&pms_id], |row| (row.get(0), row.get(1), row.get(2))).unwrap())
1420
1421
1422
1423
1424
1425
        } else if let (Some(firstname), Some(lastname)) = (s_firstname, s_lastname) {
            let query = "SELECT id, firstname, lastname
                         FROM session
                         WHERE firstname LIKE ?1
                         AND lastname LIKE ?2
                         LIMIT 30";
1426
1427
            Ok(self.query_map_many(query, &[&firstname, &lastname], |row| (row.get(0), row.get(1), row.get(2)))
                   .unwrap())
1428
        } else {
1429
            Ok(Vec::new())
1430
1431
1432
        }
    }

1433
1434
1435
1436
1437
1438
1439
1440
    fn get_debug_information(&self) -> String {
        let duration = Duration::minutes(60);
        let now = time::get_time();
        let then = now - duration;

        let query = "SELECT count(*)
                     FROM session
                     WHERE last_activity > ?1;";
1441
        let n_asession: i64 = self.query_map_one(query, &[&then], |row| row.get(0)).unwrap().unwrap();
1442
1443
1444
1445

        let query = "SELECT count(*)
                     FROM participation
                     WHERE start_date > ?1;";
1446
        let n_apart: i64 = self.query_map_one(query, &[&then], |row| row.get(0)).unwrap().unwrap();
1447
1448
1449

        let query = "SELECT count(*)
                     FROM session;";
1450
        let n_session: i64 = self.query_map_one(query