Add debug package

debug/db.go

@@ -0,0 +1,47 @@
+package debug
+
+import (
+	"fmt"
+	"encoding/binary"
+
+	"git.grassecon.net/urdt/ussd/internal/storage"
+	"git.grassecon.net/urdt/ussd/common"
+)
+
+type KeyInfo struct {
+	SessionId string
+	Typ uint8
+	SubTyp common.DataTyp
+	Label string
+	Description string
+}
+
+func ToKeyInfo(k []byte, sessionId string) (KeyInfo, error) {
+	o := KeyInfo{}
+	b := []byte(sessionId)
+	if len(k) <= len(b) {
+		return o, fmt.Errorf("storage key missing")
+	}
+
+	o.SessionId = sessionId
+
+	k = k[len(b):]
+	o.Typ = k[0]
+	k = k[1:]
+
+	if o.Typ == storage.DATATYPE_USERSUB {
+		if len(k) == 0 {
+			return o, fmt.Errorf("missing subtype key")
+		}
+		v := binary.BigEndian.Uint16(k[:2])
+		o.SubTyp = common.DataTyp(v)
+		o.Label = typToString(o.SubTyp)
+		k = k[2:]
+	}
+
+	if len(k) != 0 {
+		return o, fmt.Errorf("excess key information")
+	}
+
+	return o, nil
+}