first

pwval.go

@@ -0,0 +1,67 @@
+package main
+
+import (
+	"fmt"
+	"strings"
+	"unicode"
+)
+
+type Validator struct {
+	minLength, upper, lower, number, special int
+	criteria                                 ValidatorConf
+	specialChars                             []rune
+}
+
+type ValidatorConf map[string]int
+
+func (vd *Validator) init(criteria ValidatorConf) {
+	vd.specialChars = []rune{'[', '@', '_', '!', '#', '$', '%', '^', '&', '*', '(', ')', '<', '>', '?', '/', '\\', '|', '}', '{', '~', ':', ']'}
+	vd.criteria = criteria
+}
+
+func (vd *Validator) validate(password string) map[string]bool {
+	count := vd.criteria
+	for key, _ := range count {
+		count[key] = 0
+	}
+	for _, c := range password {
+		count["characters"] += 1
+		if unicode.IsUpper(c) {
+			count["uppercase characters"] += 1
+		} else if unicode.IsLower(c) {
+			count["lowercase characters"] += 1
+		} else if unicode.IsNumber(c) {
+			count["numbers"] += 1
+		} else {
+			for _, s := range vd.specialChars {
+				if c == s {
+					count["special characters"] += 1
+				}
+			}
+		}
+	}
+	var results map[string]bool
+	for criterion, num := range count {
+		results[criterion] = true
+		if num < vd.criteria[criterion] {
+			results[criterion] = false
+		}
+	}
+	return results
+}
+
+func (vd *Validator) getCriteria() map[string]string {
+	var lines map[string]string
+	for criterion, min := range vd.criteria {
+		if min > 0 {
+			text := fmt.Sprintf("Must have at least %d", min)
+			if min == 1 {
+				text += strings.TrimSuffix(criterion, "s")
+			} else {
+				text += criterion
+			}
+			lines[criterion] = text
+		}
+	}
+	return lines
+}