178 lines
5.6 KiB
Go
178 lines
5.6 KiB
Go
package adlin
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import (
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"crypto/hmac"
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"crypto/sha512"
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"time"
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)
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type Student struct {
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Id int64 `json:"id"`
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Login string `json:"login"`
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Time *time.Time `json:"time"`
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IP *string `json:"ip"`
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MAC *string `json:"mac"`
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}
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func GetStudents() (students []Student, err error) {
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if rows, errr := DBQuery("SELECT S.id_student, S.login, MAX(L.time), L.ip, L.mac FROM students S INNER JOIN (SELECT a.id_student, a.time, a.ip, a.mac FROM student_login a INNER JOIN (SELECT id_student, MAX(time) AS time FROM student_login GROUP BY id_student) b ON a.id_student = b.id_student AND a.time = b.time) L ON S.id_student = L.id_student GROUP BY id_student"); errr != nil {
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return nil, errr
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} else {
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defer rows.Close()
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for rows.Next() {
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var s Student
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if err = rows.Scan(&s.Id, &s.Login, &s.Time, &s.IP, &s.MAC); err != nil {
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return
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}
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students = append(students, s)
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}
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if err = rows.Err(); err != nil {
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return
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}
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return
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}
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}
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func GetStudent(id int) (s Student, err error) {
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err = DBQueryRow("SELECT S.id_student, S.login, MAX(L.time), L.ip, L.mac FROM students S INNER JOIN (SELECT a.id_student, a.time, a.ip, a.mac FROM student_login a INNER JOIN (SELECT id_student, MAX(time) AS time FROM student_login GROUP BY id_student) b ON a.id_student = b.id_student AND a.time = b.time) L ON S.id_student = L.id_student WHERE S.id_student=?", id).Scan(&s.Id, &s.Login, &s.Time, &s.IP, &s.MAC)
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return
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}
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func GetStudentByLogin(login string) (s Student, err error) {
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err = DBQueryRow("SELECT S.id_student, S.login, MAX(L.time), L.ip, L.mac FROM students S INNER JOIN (SELECT a.id_student, a.time, a.ip, a.mac FROM student_login a INNER JOIN (SELECT id_student, MAX(time) AS time FROM student_login GROUP BY id_student) b ON a.id_student = b.id_student AND a.time = b.time) L ON S.id_student = L.id_student WHERE login=?", login).Scan(&s.Id, &s.Login, &s.Time, &s.IP, &s.MAC)
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return
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}
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func StudentExists(login string) bool {
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var z int
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err := DBQueryRow("SELECT 1 FROM students WHERE login=?", login).Scan(&z)
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return err == nil && z == 1
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}
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func NewStudent(login string) (Student, error) {
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t := time.Now()
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if res, err := DBExec("INSERT INTO students (login, time) VALUES (?, ?)", login, t); err != nil {
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return Student{}, err
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} else if sid, err := res.LastInsertId(); err != nil {
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return Student{}, err
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} else {
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return Student{sid, login, &t, nil, nil}, nil
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}
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}
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func (s Student) GetPKey() []byte {
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return hmac.New(sha512.New512_224, []byte(SharedSecret)).Sum([]byte(s.Login))
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}
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func (s Student) Update() (int64, error) {
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if res, err := DBExec("UPDATE students SET login = ?, time = ? WHERE id_student = ?", s.Login, s.Time, s.Id); err != nil {
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return 0, err
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} else if nb, err := res.RowsAffected(); err != nil {
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return 0, err
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} else {
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return nb, err
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}
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}
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func (s Student) Delete() (int64, error) {
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if res, err := DBExec("DELETE FROM students WHERE id_student = ?", s.Id); err != nil {
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return 0, err
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} else if nb, err := res.RowsAffected(); err != nil {
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return 0, err
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} else {
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return nb, err
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}
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}
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func ClearStudents() (int64, error) {
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if res, err := DBExec("DELETE FROM students"); err != nil {
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return 0, err
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} else if nb, err := res.RowsAffected(); err != nil {
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return 0, err
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} else {
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return nb, err
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}
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}
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type UnlockedChallenge struct {
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Id int64 `json:"id,omitempty"`
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IdStudent int64 `json:"id_student"`
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Challenge int `json:"challenge,omitempty"`
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Time time.Time `json:"time"`
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Value interface{} `json:"value,omitempty"`
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}
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func (s Student) GetStates() (ucs []UnlockedChallenge, err error) {
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if rows, errr := DBQuery("SELECT id_st, challenge, time FROM student_challenges WHERE id_student = ?", s.Id); errr != nil {
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return nil, errr
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} else {
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defer rows.Close()
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for rows.Next() {
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var u UnlockedChallenge
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u.IdStudent = s.Id
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if err = rows.Scan(&u.Id, &u.Challenge, &u.Time); err != nil {
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return
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}
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ucs = append(ucs, u)
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}
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if err = rows.Err(); err != nil {
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return
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}
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return
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}
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}
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func (s Student) GetStatesByChallenge() (ucs []UnlockedChallenge, err error) {
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if rows, errr := DBQuery("SELECT id_st, challenge, MIN(time), value FROM student_challenges WHERE id_student = ? GROUP BY challenge, id_student", s.Id); errr != nil {
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return nil, errr
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} else {
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defer rows.Close()
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for rows.Next() {
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var u UnlockedChallenge
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u.IdStudent = s.Id
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if err = rows.Scan(&u.Id, &u.Challenge, &u.Time, &u.Value); err != nil {
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return
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}
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ucs = append(ucs, u)
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}
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if err = rows.Err(); err != nil {
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return
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}
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return
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}
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}
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func (s Student) UnlockNewChallenge(challenge int, value string) (UnlockedChallenge, error) {
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if res, err := DBExec("INSERT INTO student_challenges (id_student, challenge, time, value) VALUES (?, ?, ?, ?)", s.Id, challenge, time.Now(), value); err != nil {
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return UnlockedChallenge{}, err
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} else if utid, err := res.LastInsertId(); err != nil {
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return UnlockedChallenge{}, err
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} else {
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return UnlockedChallenge{utid, s.Id, challenge, time.Now(), value}, err
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}
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}
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func (s Student) UpdateUnlockedChallenge(challenge int, value string) (UnlockedChallenge, error) {
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if _, err := DBExec("UPDATE student_challenges SET time = ?, value = ? WHERE id_student = ? AND challenge = ?", time.Now(), value, s.Id, challenge); err != nil {
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return UnlockedChallenge{}, err
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} else {
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return UnlockedChallenge{0, s.Id, challenge, time.Now(), value}, err
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}
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}
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func (s Student) RegisterAccess(ip, mac string) error {
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if res, err := DBExec("INSERT INTO student_login (id_student, ip, mac, time) VALUES (?, ?, ?, ?)", s.Id, ip, mac, time.Now()); err != nil {
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return err
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} else if _, err := res.LastInsertId(); err != nil {
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return err
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} else {
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return err
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}
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}
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