server/checker/hint.go

115 lines
3.1 KiB
Go

package main
import (
"encoding/base64"
"encoding/binary"
"encoding/json"
"fmt"
"html"
"io/ioutil"
"log"
"math/rand"
"os"
"srs.epita.fr/fic-server/libfic"
)
type askOpenHint struct {
HintId int64 `json:"id"`
}
func treatOpeningHint(pathname string, team *fic.Team) {
// Generate a unique identifier to follow the request in logs
bid := make([]byte, 5)
binary.LittleEndian.PutUint32(bid, rand.Uint32())
id := "[" + base64.StdEncoding.EncodeToString(bid) + "]"
log.Println(id, "New openingHint receive", pathname)
var ask askOpenHint
cnt_raw, err := ioutil.ReadFile(pathname)
if err != nil {
log.Printf("%s [ERR] %s\n", id, err)
return
}
err = json.Unmarshal(cnt_raw, &ask)
if err != nil {
log.Printf("%s [ERR] %s\n", id, err)
return
}
if ask.HintId == 0 {
log.Printf("%s [WRN] Invalid content in hint file: %s\n", id, pathname)
os.Remove(pathname)
return
}
hint, err := fic.GetHint(ask.HintId)
if err != nil {
log.Printf("%s [ERR] Unable to retrieve the given hint: %s\n", id, err)
return
}
exercice, err := hint.GetExercice()
if err != nil {
log.Printf("%s [ERR] Unable to retrieve the hint's underlying exercice: %s\n", id, err)
return
}
if exercice.Disabled {
log.Println("[!!!] The team submits something for a disabled exercice")
return
}
if !team.HasAccess(exercice) {
log.Printf("%s [!!!] The team asks to open an hint whereas it doesn't have access to the exercice\n", id)
return
}
if !team.CanSeeHint(hint) {
log.Printf("%s [!!!] The team asks to open an hint whereas it doesn't have access to it due to hint dependencies\n", id)
return
}
// Find the corresponding theme
var theme *fic.Theme
if exercice.IdTheme != nil {
theme, err = fic.GetTheme(*exercice.IdTheme)
if err != nil {
log.Printf("%s [ERR] Unable to retrieve theme for exercice %d: %s\n", id, exercice.Id, err)
return
}
// Theme should not be locked
if theme.Locked {
log.Printf("%s [!!!] Open hint received for locked theme %d (hid=%d): %s\n", id, exercice.IdTheme, ask.HintId, theme.Name)
return
}
}
if err = team.OpenHint(hint); err != nil && !fic.DBIsDuplicateKeyError(err) { // Skip DUPLICATE KEY errors
log.Printf("%s [ERR] Unable to open hint: %s\n", id, err)
return
}
if theme == nil {
if _, err = fic.NewEvent(fmt.Sprintf("L'équipe %s a dévoilé un indice pour le défi %s !", html.EscapeString(team.Name), exercice.Title), "info"); err != nil {
log.Printf("%s [WRN] Unable to create event: %s\n", id, err)
}
} else {
// Write event
if lvl, err := exercice.GetLevel(); err != nil {
log.Printf("%s [WRN] %s\n", id, err)
} else if _, err = fic.NewEvent(fmt.Sprintf("L'équipe %s a dévoilé un indice pour le <strong>%d<sup>e</sup></strong> défi %s&#160;!", html.EscapeString(team.Name), lvl, theme.Name), "info"); err != nil {
log.Printf("%s [WRN] Unable to create event: %s\n", id, err)
}
}
appendGenQueue(fic.GenStruct{Id: id, Type: fic.GenTeam, TeamId: team.Id})
appendGenQueue(fic.GenStruct{Id: id, Type: fic.GenEvents})
if err = os.Remove(pathname); err != nil {
log.Printf("%s [ERR] %s\n", id, err)
}
}