/
export_challenge.go
122 lines (107 loc) · 2.44 KB
/
export_challenge.go
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package main
import (
"archive/tar"
"compress/gzip"
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
"log"
"os"
"strings"
"sync"
)
func handleError(e error) {
if e != nil {
log.Fatal(e)
}
}
func TarGzWrite(_path string, tw *tar.Writer, fi os.FileInfo) {
fr, err := os.Open(_path)
handleError(err)
defer fr.Close()
h := new(tar.Header)
h.Name = _path[len(ChallengesPath+"/"):]
h.Size = fi.Size()
h.Mode = int64(fi.Mode())
h.ModTime = fi.ModTime()
h.Typeflag = tar.TypeReg
err = tw.WriteHeader(h)
handleError(err)
_, err = io.Copy(tw, fr)
handleError(err)
}
func IterDirectory(dirPath string, tw *tar.Writer) {
dir, err := os.Open(dirPath)
handleError(err)
defer dir.Close()
dirStat, err := os.Stat(dirPath)
handleError(err)
fis, err := dir.Readdir(0)
handleError(err)
h := new(tar.Header)
h.Name = dirPath[len(ChallengesPath+"/"):]
h.Mode = 0600
h.ModTime = dirStat.ModTime()
h.Typeflag = tar.TypeDir
err = tw.WriteHeader(h)
handleError(err)
for _, fi := range fis {
curPath := dirPath + "/" + fi.Name()
if fi.IsDir() {
IterDirectory(curPath, tw)
} else {
TarGzWrite(curPath, tw, fi)
}
}
}
func tarGz(outFilePath string, inPath string) {
// file write
fw, err := os.Create(outFilePath)
handleError(err)
defer fw.Close()
// gzip write
gw := gzip.NewWriter(fw)
defer gw.Close()
// tar write
tw := tar.NewWriter(gw)
defer tw.Close()
IterDirectory(inPath, tw)
}
func generateJSON(challengeAlias string) error {
c, err := getChallengeByAlias(challengeAlias)
if err != nil {
return errors.New("Generate json " + err.Error())
}
blob, err := json.Marshal(c)
if err != nil {
return errors.New("Marshal " + err.Error())
}
err = ioutil.WriteFile(ChallengesPath+"/"+challengeAlias+"/info.json", blob, 0644)
if err != nil {
return errors.New("Writing info.json " + err.Error())
}
return nil
}
func exportChallenges(aliases []string) {
var wg sync.WaitGroup
for _, alias := range aliases {
wg.Add(1)
go func(_alias string) {
defer wg.Done()
fmt.Println("Trying to export " + _alias)
if _, err := getChallengeByAlias(_alias); err != nil {
fmt.Println("Challenge:", _alias, "does not exist")
return
}
targetFilePath := _alias + ".ctff"
challengeDirPath := ChallengesPath + "/" + _alias
if _, err := os.Stat(challengeDirPath + "/info.json"); os.IsNotExist(err) {
generateJSON(_alias)
}
tarGz(targetFilePath, strings.TrimRight(challengeDirPath, "/"))
}(alias)
}
wg.Wait()
}