74 lines
1.6 KiB
Go
74 lines
1.6 KiB
Go
package main
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import (
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"encoding/json"
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"errors"
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"time"
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)
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var PongSecret = "felixfixit"
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func init() {
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router.GET("/api/students/:sid/ping", apiHandler(studentHandler(lastPing)))
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router.GET("/api/students/:sid/pong", apiHandler(studentHandler(func (student Student, body []byte) (interface{}, error) {
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return student.lastPongs()
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})))
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router.POST("/api/students/:sid/pong", apiHandler(studentHandler(stdPong), sslOnly))
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}
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func lastPing(student Student, body []byte) (interface{}, error) {
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if pongs, err := student.lastPongs(); err != nil {
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return nil, err
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} else if len(pongs) <= 0 {
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return false, nil
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} else {
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return pongs[0], nil
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}
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}
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type Pong struct {
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Date time.Time
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State bool
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}
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func (s Student) lastPongs() (pongs []Pong, err error) {
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if rows, errr := DBQuery("SELECT time, state FROM student_pong WHERE id_student = ? ORDER BY time DESC", 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 p Pong
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if err = rows.Scan(&p.Date, &p.State); err != nil {
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return
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}
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pongs = append(pongs, p)
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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 stdPong(student Student, body []byte) (interface{}, error) {
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var gt givenToken
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if err := json.Unmarshal(body, >); err != nil {
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return nil, err
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}
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if gt.Token != PongSecret {
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return nil, errors.New("This is not the expected token.")
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}
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if res, err := DBExec("INSERT INTO student_pong (id_student, time, state) VALUES (?, ?, ?)", student.Id, time.Now(), gt.Challenge == 0); err != nil {
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return false, err
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} else if _, err := res.LastInsertId(); err != nil {
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return false, err
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} else {
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return true, err
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}
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}
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