/
dboperations.go
465 lines (403 loc) · 10.4 KB
/
dboperations.go
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package main
import (
"database/sql"
"errors"
"fmt"
"html/template"
"log"
"os"
"os/exec"
"time"
_ "github.com/go-sql-driver/mysql"
)
func checkErr(err error) {
if err != nil {
log.Fatal(err)
}
}
type User struct {
Email string
Username string
Created string
IsYou bool
Finished map[string]Challenge_link
Score int
}
type Challenge struct {
Title string
Description template.HTML
Category string
UID string
MaxScore int
Hints []string
Alias string
Creator string
LaunchText template.HTML
}
func (c Challenge) Launch(user string) template.HTML {
os.Setenv("CHALLENGE_ID", c.UID)
os.Setenv("CHALLENGE_PATH", ChallengesPath+"/"+c.Alias)
cmd := exec.Command(ChallengesPath+"/"+c.Alias+
"/rc/start_challenge", user)
if c.Title == "Telegram PoC" {
err := cmd.Start()
if err != nil {
return template.HTML(err.Error())
}
return template.HTML("Challenge launched")
}
out, err := cmd.Output()
if err != nil {
return template.HTML(err.Error() + string(out))
}
return template.HTML(out)
}
func (c Challenge) Stop(user string) {
os.Setenv("CHALLENGE_ID", c.UID)
os.Setenv("CHALLENGE_PATH", ChallengesPath+"/"+c.Alias)
_, err := exec.Command(ChallengesPath+"/"+c.Alias+
"/rc/stop_challenge", user).Output()
if err != nil {
log.Println(template.HTML(err.Error()))
}
}
func (c Challenge) CheckSolution(solution, user string) bool {
os.Setenv("CHALLENGE_ID", c.UID)
os.Setenv("CHALLENGE_PATH", ChallengesPath+"/"+c.Alias)
out, err := exec.Command(ChallengesPath+"/"+c.Alias+
"/rc/check_solution", solution, user).Output()
fmt.Println(string(out), err)
return err == nil
}
func (c Challenge) AddToEnvironment() error {
filesToCreate := []string{"/rc/start_challenge", "/rc/stop_challenge", "/rc/check_solution"}
path := ChallengesPath + "/" + c.Alias
err := os.MkdirAll(path+"/rc", os.FileMode(0755))
if err != nil {
fmt.Println(err)
return err
}
_ = os.MkdirAll(path+"/static", os.FileMode(0755))
for _, fName := range filesToCreate {
if _, err := os.Stat(path + fName); os.IsNotExist(err) {
f, err := os.Create(path + fName)
if err != nil {
fmt.Println(err)
return err
}
f.Chmod(0777)
f.Close()
}
}
f, err := os.Create(path + "/your_ID_is_" + c.UID)
f.Close()
return nil
}
func (c Challenge) addChallenge() error {
if c.Alias == "test" {
return nil
}
if err := c.AddToEnvironment(); err != nil {
return err
}
AddChallenge(c)
fmt.Println("Challenge", c.Title, "succesfully added")
return nil
}
type Challenge_link struct {
Title string
//Id int
Score int
NSuccess int
NTries int
SuccessPercentage float32
UID string
}
/***********************
* User operations *
***********************/
func AddUser(mail, password, username string) error {
db, err := sql.Open("mysql", DBLoginString)
//insert
stmt, err := db.Prepare("INSERT userinfo SET " +
"email=?,password=?,created=?,username=?,score=?")
checkErr(err)
date := time.Now().Format("20060102")
_, err = stmt.Exec(mail, password, date, username, 0)
return err
}
func VerifyUser(identifier, password string) (username string) {
db, err := sql.Open("mysql", DBLoginString)
checkErr(err)
defer db.Close()
stmt, err := db.Prepare(
"SELECT username FROM userinfo WHERE (email=? or username=?) and password=?")
checkErr(err)
rows, err := stmt.Query(identifier, identifier, password)
checkErr(err)
if !rows.Next() {
return ""
}
rows.Scan(&username)
return
}
func GetUsernames() (users []string) {
db, err := sql.Open("mysql", DBLoginString)
checkErr(err)
defer db.Close()
stmt, err := db.Prepare(
"SELECT username FROM userinfo")
checkErr(err)
rows, err := stmt.Query()
checkErr(err)
for rows.Next() {
var username string
err = rows.Scan(&username)
checkErr(err)
users = append(users, username)
}
return
}
func GetUser(username string) (u User, err error) {
db, err := sql.Open("mysql", DBLoginString)
checkErr(err)
defer db.Close()
stmt, err := db.Prepare("SELECT * FROM userinfo WHERE username=?")
checkErr(err)
rows, err := stmt.Query(username)
if !rows.Next() {
err = errors.New("Not found")
return
}
var disposable string
err = rows.Scan(&u.Email, &disposable, &u.Created, &u.Username,
&u.Score)
if err != nil {
return
}
db.Close()
scores, uids := GetSuccesfulAttempts(u.Email)
db, _ = sql.Open("mysql", DBLoginString)
u.Finished = make(map[string]Challenge_link)
for i := 0; i < len(uids); i++ {
stmt, err = db.Prepare("SELECT Title FROM challenges WHERE " +
"UID=?")
rows, err = stmt.Query(uids[i])
checkErr(err)
rows.Next()
var title string
rows.Scan(&title)
u.Finished[title] = Challenge_link{Title: title, Score: scores[i],
UID: uids[i]}
}
return
}
func UpdateScore(email string, score int) {
db, err := sql.Open("mysql", DBLoginString)
checkErr(err)
defer db.Close()
stmt, err := db.Prepare("SELECT Score from userinfo WHERE " +
"email=?")
checkErr(err)
rows, err := stmt.Query(email)
rows.Next()
var prevScore int
rows.Scan(&prevScore)
score += prevScore
stmt, err = db.Prepare("UPDATE userinfo SET Score=? WHERE email=?")
checkErr(err)
_, _ = stmt.Exec(score, email)
}
func GetRanking() (users []User) {
db, err := sql.Open("mysql", DBLoginString)
checkErr(err)
defer db.Close()
stmt, err := db.Prepare("SELECT username, Score from userinfo " +
"ORDER BY Score DESC")
checkErr(err)
rows, err := stmt.Query()
for rows.Next() {
var u User
err = rows.Scan(&u.Username, &u.Score)
checkErr(err)
users = append(users, u)
}
return
}
/***********************
* Challenge operations *
***********************/
func getSuccessAndTries(UID string, db *sql.DB) (nsuccess, ntries int, err error) {
stmt, err := db.Prepare("SELECT COUNT(*) FROM attempts WHERE UID=?")
checkErr(err)
rows, err := stmt.Query(UID)
checkErr(err)
if !rows.Next() {
err = errors.New("SuccessAndTries: no rows")
return
}
rows.Scan(&ntries)
stmt, err = db.Prepare("SELECT COUNT(*) FROM attempts WHERE UID=? AND Succesful")
checkErr(err)
rows, err = stmt.Query(UID)
checkErr(err)
if !rows.Next() {
err = errors.New("SuccessAndTries: no rows")
return
}
rows.Scan(&nsuccess)
return
}
func GetChallengesLinks() (challenges []Challenge_link) {
db, err := sql.Open("mysql", DBLoginString)
checkErr(err)
defer db.Close()
stmt, err := db.Prepare(
"SELECT Title, MaxScore, UID FROM challenges")
checkErr(err)
rows, err := stmt.Query()
checkErr(err)
for rows.Next() {
var c Challenge_link
err = rows.Scan(&c.Title, &c.Score, &c.UID)
checkErr(err)
c.NSuccess, c.NTries, err = getSuccessAndTries(c.UID, db)
checkErr(err)
if c.NTries != 0 {
c.SuccessPercentage = 100 * float32(c.NSuccess) / float32(c.NTries)
}
challenges = append(challenges, c)
}
return
}
func GetChallenge(UID string) (c Challenge, err error) {
db, err := sql.Open("mysql", DBLoginString)
checkErr(err)
defer db.Close()
stmt, err := db.Prepare(
"SELECT Title, Description, MaxScore, Alias, Category, UID, Creator " +
"FROM challenges WHERE UID=?")
checkErr(err)
rows, err := stmt.Query(UID)
checkErr(err)
if !rows.Next() {
err = errors.New("Not found")
return
}
var s string
err = rows.Scan(&c.Title, &s, &c.MaxScore, &c.Alias, &c.Category, &c.UID, &c.Creator)
c.Description = template.HTML(s)
return
}
func ChallengeExists(UID string) bool {
_, err := GetChallenge(UID)
return err == nil
}
func AddChallenge(c Challenge) {
db, err := sql.Open("mysql", DBLoginString)
checkErr(err)
defer db.Close()
stmt, err := db.Prepare("INSERT challenges SET " +
"Title=?, Description=?, MaxScore=?, Nhints=?, " +
"Category=?, Creator=?, Alias=?, UID=?")
checkErr(err)
_, err = stmt.Exec(c.Title, string(c.Description), c.MaxScore, 0,
c.Category, c.Creator, c.Alias, c.UID)
checkErr(err)
}
func getChallengeByAlias(alias string) (c Challenge, err error) {
db, err := sql.Open("mysql", DBLoginString)
checkErr(err)
defer db.Close()
stmt, err := db.Prepare(
"SELECT Title, Description, MaxScore, Alias, Category, UID, Creator " +
"FROM challenges WHERE Alias=?")
checkErr(err)
rows, err := stmt.Query(alias)
if !rows.Next() {
err = errors.New("Not found")
return
}
var s string
err = rows.Scan(&c.Title, &s, &c.MaxScore, &c.Alias, &c.Category, &c.UID, &c.Creator)
c.Description = template.HTML(s)
return
}
func RemoveChallenge(UID string) {
db, err := sql.Open("mysql", DBLoginString)
checkErr(err)
defer db.Close()
stmt, err := db.Prepare("DELETE FROM challenges WHERE UID = ?")
checkErr(err)
_, err = stmt.Exec(UID)
checkErr(err)
}
func GetAllChallengeAliases() (aliases []string) {
db, err := sql.Open("mysql", DBLoginString)
checkErr(err)
defer db.Close()
stmt, err := db.Prepare("SELECT alias from challenges")
checkErr(err)
rows, err := stmt.Query()
for rows.Next() {
var s string
err = rows.Scan(&s)
checkErr(err)
aliases = append(aliases, s)
}
return
}
/***********************
* Attempts operations *
***********************/
func AddAtempt(email string, UID string, succesful bool, score int) {
db, err := sql.Open("mysql", DBLoginString)
checkErr(err)
defer db.Close()
stmt, err := db.Prepare("INSERT attempts SET " +
"Date=?,u_email=?,UID=?,succesful=?,Score=?")
checkErr(err)
date := time.Now().Format("20060102")
_, err = stmt.Exec(date, email, UID, succesful, score)
checkErr(err)
/*if succesful {
stmt, _ = db.Prepare("SELECT NSuccess from challenges WHERE " +
"UID=?")
rows, _ := stmt.Query(UID)
rows.Next()
var nsuccess int
rows.Scan(&nsuccess)
nsuccess++
stmt, err = db.Prepare("UPDATE challenges SET NSuccess=? WHERE UID=?")
stmt.Exec(nsuccess, UID)
}*/
}
func GetSuccesfulAttempts(email string) (scores []int, uids []string) {
db, err := sql.Open("mysql", DBLoginString)
checkErr(err)
defer db.Close()
stmt, err := db.Prepare("SELECT score, UID FROM attempts WHERE " +
"succesful = true and u_email = ?")
checkErr(err)
rows, err := stmt.Query(email)
checkErr(err)
for rows.Next() {
var score int
var UID string
err = rows.Scan(&score, &UID)
scores = append(scores, score)
uids = append(uids, UID)
}
return scores, uids
}
func UserFinishedChallenge(email string, UID string) bool {
db, err := sql.Open("mysql", DBLoginString)
checkErr(err)
defer db.Close()
stmt, err := db.Prepare("SELECT * FROM attempts WHERE " +
"succesful = true and u_email = ? and UID=?")
checkErr(err)
rows, err := stmt.Query(email, UID)
checkErr(err)
return rows.Next()
}