Symbols are usable

(but disabled by default, for my own backwards compatibility)

passage.go

@@ -21,7 +21,7 @@ type Passage struct {
 func CreatePassage(pin string) *Passage {
 	p := new(Passage)
 	p.length = 20
-	p.valids = UseLower | UseUpper | UseNumber | UseSymbol
+	p.valids = UseLower | UseUpper | UseNumber
 	p.pin = pin
 	return p
 }
@@ -30,8 +30,15 @@ func (p *Passage) SetPin(pin string) {
 	p.pin = pin
 }
 
-func (p *Passage) GetPassword(door string) string {
+func (p *Passage) EnableChars(which int) {
-	ret := ""
+	p.valids |= which
+}
+
+func (p *Passage) DisableChars(which int) {
+	p.valids ^= which
+}
+
+func (p *Passage) GetValidChars() string {
 	validChars := ""
 	if p.valids&UseLower == UseLower {
 		validChars += "abcdefghijklmnopqrstuvwxyz"
@@ -42,6 +49,15 @@ func (p *Passage) GetPassword(door string) string {
 	if p.valids&UseNumber == UseNumber {
 		validChars += "1234567890"
 	}
+	if p.valids&UseSymbol == UseSymbol {
+		validChars += "~!@#$%^&*()[]{}|;:,<.>/?"
+	}
+	return validChars
+}
+
+func (p *Passage) GetPassword(door string) string {
+	ret := ""
+	validChars := p.GetValidChars()
 	hashing := p.pin + " - " + door
 	shaArr := sha256.Sum256([]byte(hashing))
 	var sha []byte
@@ -49,7 +65,6 @@ func (p *Passage) GetPassword(door string) string {
 		sha = append(sha, shaArr[i])
 	}
 	for i := 0; i < p.length; i++ {
-		//for i := range sha {
 		ret += string(validChars[int(sha[i])%len(validChars)])
 	}
 	return ret