first steps in posting connected. can make reply with no quote or quote OP

do not recommend working on this branch for the time being since
things are being moved around a lot

1 files changed, 116 insertions, 0 deletions

diff --git a/post/tripcode.go b/post/tripcode.go
new file mode 100644
index 0000000..3b7e48b
--- /dev/null
+++ b/post/tripcode.go
@@ -0,0 +1,116 @@
+package post
+
+import (
+	"bytes"
+	"regexp"
+	"strings"
+
+	"github.com/FChannel0/FChannel-Server/config"
+	"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 TripCode(pass string) (string, error) {
+	pass = TripCodeConvert(pass)
+
+	var salt [2]rune
+
+	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 "", err
+	}
+
+	// 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 TripCodeSecure(pass string) (string, error) {
+	pass = TripCodeConvert(pass)
+
+	enc, err := crypt.Crypt(pass, "$1$"+config.Salt)
+	if err != nil {
+		return "", err
+	}
+
+	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(
+		"&", "&",
+		"\"", """,
+		"<", "&lt;",
+		">", "&gt;",
+	)
+
+	return re.Replace(s.String())
+}
+
+func CreateNameTripCode(ctx *fiber.Ctx) (string, string, error) {
+	// TODO: to allow this to compile, this will fail for the case of the admin
+	// this can be easily fixed when the rest of the code gets converted to fiber
+
+	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 := GetPasswordFromSession(r)
+
+		//if admin && HasAuth(modcred, board) {
+		//	return tripSecure.ReplaceAllString(input, ""), "#Admin"
+		//}
+
+		hash, err := TripCodeSecure(chunck)
+		return tripSecure.ReplaceAllString(input, ""), "!!" + hash, err
+	}
+
+	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 := GetPasswordFromSession(r)
+
+		//if admin && HasAuth(db, modcred, board) {
+		//	return trip.ReplaceAllString(input, ""), "#Admin"
+		//}
+
+		hash, err := TripCode(chunck)
+		return trip.ReplaceAllString(input, ""), "!" + hash, err
+	}
+
+	return input, "", nil
+}