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package post
import (
"bytes"
"regexp"
"strings"
"github.com/FChannel0/FChannel-Server/config"
"github.com/FChannel0/FChannel-Server/util"
"github.com/gofiber/fiber/v2"
_ "github.com/lib/pq"
"github.com/simia-tech/crypt"
"golang.org/x/text/encoding/japanese"
"golang.org/x/text/transform"
)
const SaltTable = "" +
"................................" +
".............../0123456789ABCDEF" +
"GABCDEFGHIJKLMNOPQRSTUVWXYZabcde" +
"fabcdefghijklmnopqrstuvwxyz....." +
"................................" +
"................................" +
"................................" +
"................................"
func CreateNameTripCode(ctx *fiber.Ctx) (string, string, error) {
input := ctx.FormValue("name")
tripSecure := regexp.MustCompile("##(.+)?")
if tripSecure.MatchString(input) {
chunck := tripSecure.FindString(input)
chunck = strings.Replace(chunck, "##", "", 1)
ce := regexp.MustCompile(`(?i)Admin`)
admin := ce.MatchString(chunck)
board, modcred := util.GetPasswordFromSession(ctx)
if hasAuth, _ := util.HasAuth(modcred, board); hasAuth && admin {
return tripSecure.ReplaceAllString(input, ""), "#Admin", nil
}
hash, err := TripCodeSecure(chunck)
return tripSecure.ReplaceAllString(input, ""), "!!" + hash, util.MakeError(err, "CreateNameTripCode")
}
trip := regexp.MustCompile("#(.+)?")
if trip.MatchString(input) {
chunck := trip.FindString(input)
chunck = strings.Replace(chunck, "#", "", 1)
ce := regexp.MustCompile(`(?i)Admin`)
admin := ce.MatchString(chunck)
board, modcred := util.GetPasswordFromSession(ctx)
if hasAuth, _ := util.HasAuth(modcred, board); hasAuth && admin {
return trip.ReplaceAllString(input, ""), "#Admin", nil
}
hash, err := TripCode(chunck)
return trip.ReplaceAllString(input, ""), "!" + hash, util.MakeError(err, "CreateNameTripCode")
}
return input, "", nil
}
func TripCode(pass string) (string, error) {
var salt [2]rune
pass = TripCodeConvert(pass)
s := []rune(pass + "H..")[1:3]
for i, r := range s {
salt[i] = rune(SaltTable[r%256])
}
enc, err := crypt.Crypt(pass, "$1$"+string(salt[:]))
if err != nil {
return "", util.MakeError(err, "TripCode")
}
// normally i would just return error here but if the encrypt fails, this operation may fail and as a result cause a panic
return enc[len(enc)-10 : len(enc)], nil
}
func TripCodeConvert(str string) string {
var s bytes.Buffer
transform.NewWriter(&s, japanese.ShiftJIS.NewEncoder()).Write([]byte(str))
re := strings.NewReplacer(
"&", "&",
"\"", """,
"<", "<",
">", ">",
)
return re.Replace(s.String())
}
func TripCodeSecure(pass string) (string, error) {
pass = TripCodeConvert(pass)
enc, err := crypt.Crypt(pass, "$1$"+config.Salt)
if err != nil {
return "", util.MakeError(err, "TripCodeSecure")
}
return enc[len(enc)-10 : len(enc)], nil
}
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