verify the username, email and nickname are valid when registering via OAuth 2.0

pkg/utils/validators.go

@@ -0,0 +1,65 @@
+package utils
+
+import "regexp"
+
+var (
+	usernamePattern                    = regexp.MustCompile("^(?i)[a-z0-9_-]+$")
+	emailPattern                       = regexp.MustCompile("^(?i)(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|\"(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21\\x23-\\x5b\\x5d-\\x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])*\")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21-\\x5a\\x53-\\x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])+)\\])$")
+	hexRGBColorPattern                 = regexp.MustCompile("^(?i)([0-9a-f]{6}|[0-9a-f]{3})$")
+	longDateTimePattern                = regexp.MustCompile("^([1-9][0-9]{3})-(0[1-9]|1[0-2])-(0[1-9]|1[0-9]|2[0-9]|3[01]) ([0-1][0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])$")
+	longDateTimeWithoutSecondPattern   = regexp.MustCompile("^([1-9][0-9]{3})-(0[1-9]|1[0-2])-(0[1-9]|1[0-9]|2[0-9]|3[01]) ([0-1][0-9]|2[0-3]):([0-5][0-9])$")
+	longDatePattern                    = regexp.MustCompile("^([1-9][0-9]{3})-(0[1-9]|1[0-2])-(0[1-9]|1[0-9]|2[0-9]|3[01])$")
+	longOrShortYearMonthDayDatePattern = regexp.MustCompile("^(([1-9][0-9])?[0-9]{2})[-/.']([1-9]|0[1-9]|1[0-2])[-/.']([1-9]|0[1-9]|1[0-9]|2[0-9]|3[01])$")
+	longOrShortMonthDayYearDatePattern = regexp.MustCompile("^([1-9]|0[1-9]|1[0-2])[-/.']([1-9]|0[1-9]|1[0-9]|2[0-9]|3[01])[-/.'](([1-9][0-9])?[0-9]{2})$")
+	longOrShortDayMonthYearDatePattern = regexp.MustCompile("^([1-9]|0[1-9]|1[0-9]|2[0-9]|3[01])[-/.']([1-9]|0[1-9]|1[0-2])[-/.'](([1-9][0-9])?[0-9]{2})$")
+)
+
+// IsValidUsername reports whether username is valid
+func IsValidUsername(username string) bool {
+	return len(username) <= 32 && usernamePattern.MatchString(username)
+}
+
+// IsValidEmail reports whether email is valid
+func IsValidEmail(email string) bool {
+	return len(email) <= 100 && emailPattern.MatchString(email)
+}
+
+// IsValidNickName reports whether user nick name is valid
+func IsValidNickName(nickname string) bool {
+	return len(nickname) <= 64
+}
+
+// IsValidHexRGBColor reports whether color is valid
+func IsValidHexRGBColor(color string) bool {
+	return hexRGBColorPattern.MatchString(color)
+}
+
+// IsValidLongDateTimeFormat reports whether long date time is valid format
+func IsValidLongDateTimeFormat(datetime string) bool {
+	return longDateTimePattern.MatchString(datetime)
+}
+
+// IsValidLongDateTimeWithoutSecondFormat reports long date time without seconds is valid format
+func IsValidLongDateTimeWithoutSecondFormat(datetime string) bool {
+	return longDateTimeWithoutSecondPattern.MatchString(datetime)
+}
+
+// IsValidLongDateFormat reports long date is valid format
+func IsValidLongDateFormat(date string) bool {
+	return longDatePattern.MatchString(date)
+}
+
+// IsValidYearMonthDayLongOrShortDateFormat reports long date is valid format
+func IsValidYearMonthDayLongOrShortDateFormat(date string) bool {
+	return longOrShortYearMonthDayDatePattern.MatchString(date)
+}
+
+// IsValidMonthDayYearLongOrShortDateFormat reports long date is valid format
+func IsValidMonthDayYearLongOrShortDateFormat(date string) bool {
+	return longOrShortMonthDayYearDatePattern.MatchString(date)
+}
+
+// IsValidDayMonthYearLongOrShortDateFormat reports long date is valid format
+func IsValidDayMonthYearLongOrShortDateFormat(date string) bool {
+	return longOrShortDayMonthYearDatePattern.MatchString(date)
+}