125 lines
3.5 KiB
Go
125 lines
3.5 KiB
Go
package main
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import (
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"encoding/base64"
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"encoding/binary"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"log"
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"math/rand"
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"os"
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"strconv"
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"golang.org/x/crypto/blake2b"
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"srs.epita.fr/fic-server/libfic"
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)
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type ResponsesUpload struct {
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Keys map[string]string `json:"flags"`
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MCQs map[int64]bool `json:"mcqs"`
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}
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func treatSubmission(pathname string, team fic.Team, exercice_id string) {
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// Generate a unique identifier to follow the request in logs
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bid := make([]byte, 5)
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binary.LittleEndian.PutUint32(bid, rand.Uint32())
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id := "[" + base64.StdEncoding.EncodeToString(bid) + "]"
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log.Println(id, "New submission receive", pathname)
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// Parse exercice_id argument
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eid, err := strconv.Atoi(exercice_id)
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if err != nil {
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log.Printf("%s [ERR] %s is not a valid number: %s\n", id, exercice_id, err)
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return
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}
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// Find the given exercice
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exercice, err := fic.GetExercice(int64(eid))
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if err != nil {
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log.Printf("%s [ERR] Unable to find exercice %d: %s", id, eid, err)
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return
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}
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// Find the corresponding theme
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theme, err := exercice.GetTheme()
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if err != nil {
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log.Println("%s [ERR] Unable to retrieve theme for exercice %d: %s", id, eid, err)
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return
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}
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// Read received file
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cnt_raw, err := ioutil.ReadFile(pathname)
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if err != nil {
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log.Println(id, "[ERR] Unable to read file;", err)
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return
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}
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// Save checksum to treat duplicates
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cksum := blake2b.Sum512(cnt_raw)
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if err != nil {
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log.Println(id, "[ERR] JSON parsing error:", err)
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return
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}
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// Parse it
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var responses ResponsesUpload
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err = json.Unmarshal(cnt_raw, &responses)
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if err != nil {
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log.Println(id, "[ERR] JSON parsing error:", err)
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return
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}
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// Ensure the team didn't already solve this exercice
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s, tm := team.HasSolved(exercice)
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if s {
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log.Printf("%s [WRN] Team %d ALREADY solved exercice %d (%s : %s)\n", id, team.Id, exercice.Id, theme.Name, exercice.Title)
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return
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}
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// Check given answers
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solved, err := exercice.CheckResponse(cksum[:], responses.Keys, responses.MCQs, team)
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if err != nil {
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log.Println(id, "[ERR] Unable to CheckResponse:", err)
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genTeamMyFile(team)
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return
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}
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// At this point, we have treated the file, so it can be safely deleted
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if err := os.Remove(pathname); err != nil {
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log.Println(id, "[ERR] Can't remove file:", err)
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}
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if solved {
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log.Printf("%s Team %d SOLVED exercice %d (%s : %s)\n", id, team.Id, exercice.Id, theme.Name, exercice.Title)
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if err := exercice.Solved(team); err != nil {
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log.Println(id, "[ERR] Unable to mark the challenge as solved:", err)
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}
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// Write event
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if lvl, err := exercice.GetLevel(); err != nil {
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log.Println(id, "[ERR] Unable to get exercice level:", err)
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} else if _, err := fic.NewEvent(fmt.Sprintf("L'équipe %s a résolu le <strong>%d<sup>e</sup></strong> challenge %s !", team.Name, lvl, theme.Name), "alert-success"); err != nil {
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log.Println(id, "[WRN] Unable to create event:", err)
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}
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genTeamAll(team)
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} else {
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log.Printf("%s Team %d submit an invalid solution for exercice %d (%s : %s)\n", id, team.Id, exercice.Id, theme.Name, exercice.Title)
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// Write event (only on first try)
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if tm.Unix() == 0 {
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if lvl, err := exercice.GetLevel(); err != nil {
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log.Println(id, "[ERR] Unable to get exercice level:", err)
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} else if _, err := fic.NewEvent(fmt.Sprintf("L'équipe %s tente le <strong>%d<sup>e</sup></strong> challenge %s !", team.Name, lvl, theme.Name), "alert-warning"); err != nil {
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log.Println(id, "[WRN] Unable to create event:", err)
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}
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}
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genTeamMyFile(team)
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}
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if err := genEventsFile(); err != nil {
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log.Println("events.json generation error: ", err)
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}
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}
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