more checks and validations on passphrase settings

main.go

@@ -27,8 +27,6 @@ type Site struct {
}
func main() {
	log.Printf("%x", getBookname("bmallred"))
	http.HandleFunc("/api", func(w http.ResponseWriter, r *http.Request) {
	})
@@ -174,3 +172,45 @@ func containsDigits(source []byte, minOccurrences int) bool {
	return len(matches) >= minOccurrences
}
func containsUppercase(source []byte, minOccurrences int) bool {
	r := regexp.MustCompile(`[A-Z]+`)
	var matches [][]byte
	if matches = r.FindAll(source, -1); matches == nil {
		return false
	}
	return len(matches) >= minOccurrences
}
func containsSpecialCharacters(source []byte, specialCharacters string, minOccurrences int) bool {
	s := specialCharacters
	s = strings.Replace(s, "\\", "\\\\", -1)
	s = strings.Replace(s, ".", "\\.", -1)
	s = strings.Replace(s, " ", "\\s", -1)
	s = strings.Replace(s, "-", "\\-", -1)
	s = strings.Replace(s, "[", "\\[", -1)
	s = strings.Replace(s, "]", "\\]", -1)
	r := regexp.MustCompile(`[` + s + `]+`)
	var matches [][]byte
	if matches = r.FindAll(source, -1); matches == nil {
		return false
	}
	return len(matches) >= minOccurrences
}
func validateLength(source []byte, minimum, maximum int) bool {
	if minimum > -1 && len(source) < minimum {
		return false
	}
	if maximum > -1 && len(source) > maximum {
		return false
	}
	return true
}

main_test.go

@@ -21,3 +21,76 @@ func TestContainsDigits(t *testing.T) {
		t.FailNow()
	}
}
func TestContainsUppercase(t *testing.T) {
	expected := true
	actual := containsUppercase([]byte("Blah0Blah2"), 2)
	if actual != expected {
		t.FailNow()
	}
	expected = false
	actual = containsUppercase([]byte("Blah0blah"), 2)
	if actual != expected {
		t.FailNow()
	}
	expected = true
	actual = containsUppercase([]byte("Blah0BLaH12"), 2)
	if actual != expected {
		t.FailNow()
	}
}
func TestContainsSpecialCharacters(t *testing.T) {
	special := "~!@#$%^&*()_+-= []{};':\",./<>?\\|"
	expected := true
	actual := containsSpecialCharacters([]byte("Blah!Blah&"), special, 2)
	if actual != expected {
		t.FailNow()
	}
	expected = false
	actual = containsSpecialCharacters([]byte("Blah!blah"), special, 2)
	if actual != expected {
		t.FailNow()
	}
	expected = true
	actual = containsSpecialCharacters([]byte("Blah!BLa l."), special, 2)
	if actual != expected {
		t.FailNow()
	}
}
func TestLength(t *testing.T) {
	expected := true
	actual := validateLength([]byte("eightormore"), 8, -1)
	if actual != expected {
		t.FailNow()
	}
	expected = true
	actual = validateLength([]byte("eighttoten"), 8, 10)
	if actual != expected {
		t.FailNow()
	}
	expected = false
	actual = validateLength([]byte("eighttoten----"), 8, 10)
	if actual != expected {
		t.FailNow()
	}
	expected = true
	actual = validateLength([]byte("maxof8--"), -1, 8)
	if actual != expected {
		t.FailNow()
	}
	expected = false
	actual = validateLength([]byte("ei"), 8, -1)
	if actual != expected {
		t.FailNow()
	}
}