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864 lines
20 KiB
864 lines
20 KiB
package validator
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import (
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"fmt"
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"net/url"
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"reflect"
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"strconv"
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"strings"
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"time"
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"unicode/utf8"
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)
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// BakedInValidators is the default map of ValidationFunc
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// you can add, remove or even replace items to suite your needs,
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// or even disregard and use your own map if so desired.
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var BakedInValidators = map[string]Func{
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"required": hasValue,
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"len": hasLengthOf,
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"min": hasMinOf,
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"max": hasMaxOf,
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"eq": isEq,
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"ne": isNe,
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"lt": isLt,
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"lte": isLte,
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"gt": isGt,
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"gte": isGte,
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"eqfield": isEqField,
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"nefield": isNeField,
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"gtefield": isGteField,
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"gtfield": isGtField,
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"ltefield": isLteField,
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"ltfield": isLtField,
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"alpha": isAlpha,
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"alphanum": isAlphanum,
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"numeric": isNumeric,
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"number": isNumber,
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"hexadecimal": isHexadecimal,
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"hexcolor": isHexcolor,
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"rgb": isRgb,
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"rgba": isRgba,
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"hsl": isHsl,
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"hsla": isHsla,
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"email": isEmail,
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"url": isURL,
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"uri": isURI,
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"base64": isBase64,
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"contains": contains,
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"containsany": containsAny,
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"containsrune": containsRune,
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"excludes": excludes,
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"excludesall": excludesAll,
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"excludesrune": excludesRune,
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}
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func excludesRune(top interface{}, current interface{}, field interface{}, param string) bool {
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return !containsRune(top, current, field, param)
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}
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func excludesAll(top interface{}, current interface{}, field interface{}, param string) bool {
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return !containsAny(top, current, field, param)
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}
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func excludes(top interface{}, current interface{}, field interface{}, param string) bool {
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return !contains(top, current, field, param)
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}
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func containsRune(top interface{}, current interface{}, field interface{}, param string) bool {
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r, _ := utf8.DecodeRuneInString(param)
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return strings.ContainsRune(field.(string), r)
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}
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func containsAny(top interface{}, current interface{}, field interface{}, param string) bool {
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return strings.ContainsAny(field.(string), param)
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}
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func contains(top interface{}, current interface{}, field interface{}, param string) bool {
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return strings.Contains(field.(string), param)
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}
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func isNeField(top interface{}, current interface{}, field interface{}, param string) bool {
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return !isEqField(top, current, field, param)
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}
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func isNe(top interface{}, current interface{}, field interface{}, param string) bool {
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return !isEq(top, current, field, param)
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}
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func isEqField(top interface{}, current interface{}, field interface{}, param string) bool {
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if current == nil {
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panic("struct not passed for cross validation")
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}
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currentVal := reflect.ValueOf(current)
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if currentVal.Kind() == reflect.Ptr && !currentVal.IsNil() {
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currentVal = reflect.ValueOf(currentVal.Elem().Interface())
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}
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var currentFielVal reflect.Value
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switch currentVal.Kind() {
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case reflect.Struct:
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if currentVal.Type() == reflect.TypeOf(time.Time{}) {
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currentFielVal = currentVal
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break
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}
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f := currentVal.FieldByName(param)
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if f.Kind() == reflect.Invalid {
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panic(fmt.Sprintf("Field \"%s\" not found in struct", param))
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}
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currentFielVal = f
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default:
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currentFielVal = currentVal
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}
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if currentFielVal.Kind() == reflect.Ptr && !currentFielVal.IsNil() {
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currentFielVal = reflect.ValueOf(currentFielVal.Elem().Interface())
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}
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fv := reflect.ValueOf(field)
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switch fv.Kind() {
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case reflect.String:
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return fv.String() == currentFielVal.String()
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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return fv.Int() == currentFielVal.Int()
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
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return fv.Uint() == currentFielVal.Uint()
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case reflect.Float32, reflect.Float64:
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return fv.Float() == currentFielVal.Float()
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case reflect.Slice, reflect.Map, reflect.Array:
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return int64(fv.Len()) == int64(currentFielVal.Len())
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case reflect.Struct:
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if fv.Type() == reflect.TypeOf(time.Time{}) {
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if currentFielVal.Type() != reflect.TypeOf(time.Time{}) {
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panic("Bad Top Level field type")
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}
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t := currentFielVal.Interface().(time.Time)
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fieldTime := field.(time.Time)
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return fieldTime.Equal(t)
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}
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}
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panic(fmt.Sprintf("Bad field type %T", field))
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}
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func isEq(top interface{}, current interface{}, field interface{}, param string) bool {
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st := reflect.ValueOf(field)
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switch st.Kind() {
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case reflect.String:
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return st.String() == param
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case reflect.Slice, reflect.Map, reflect.Array:
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p := asInt(param)
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return int64(st.Len()) == p
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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p := asInt(param)
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return st.Int() == p
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
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p := asUint(param)
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return st.Uint() == p
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case reflect.Float32, reflect.Float64:
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p := asFloat(param)
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return st.Float() == p
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}
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panic(fmt.Sprintf("Bad field type %T", field))
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}
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func isBase64(top interface{}, current interface{}, field interface{}, param string) bool {
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return matchesRegex(base64Regex, field)
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}
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func isURI(top interface{}, current interface{}, field interface{}, param string) bool {
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st := reflect.ValueOf(field)
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switch st.Kind() {
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case reflect.String:
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_, err := url.ParseRequestURI(field.(string))
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return err == nil
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}
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panic(fmt.Sprintf("Bad field type %T", field))
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}
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func isURL(top interface{}, current interface{}, field interface{}, param string) bool {
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st := reflect.ValueOf(field)
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switch st.Kind() {
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case reflect.String:
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url, err := url.ParseRequestURI(field.(string))
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if err != nil {
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return false
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}
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if len(url.Scheme) == 0 {
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return false
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}
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return err == nil
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}
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panic(fmt.Sprintf("Bad field type %T", field))
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}
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func isEmail(top interface{}, current interface{}, field interface{}, param string) bool {
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return matchesRegex(emailRegex, field)
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}
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func isHsla(top interface{}, current interface{}, field interface{}, param string) bool {
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return matchesRegex(hslaRegex, field)
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}
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func isHsl(top interface{}, current interface{}, field interface{}, param string) bool {
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return matchesRegex(hslRegex, field)
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}
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func isRgba(top interface{}, current interface{}, field interface{}, param string) bool {
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return matchesRegex(rgbaRegex, field)
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}
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func isRgb(top interface{}, current interface{}, field interface{}, param string) bool {
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return matchesRegex(rgbRegex, field)
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}
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func isHexcolor(top interface{}, current interface{}, field interface{}, param string) bool {
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return matchesRegex(hexcolorRegex, field)
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}
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func isHexadecimal(top interface{}, current interface{}, field interface{}, param string) bool {
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return matchesRegex(hexadecimalRegex, field)
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}
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func isNumber(top interface{}, current interface{}, field interface{}, param string) bool {
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return matchesRegex(numberRegex, field)
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}
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func isNumeric(top interface{}, current interface{}, field interface{}, param string) bool {
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return matchesRegex(numericRegex, field)
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}
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func isAlphanum(top interface{}, current interface{}, field interface{}, param string) bool {
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return matchesRegex(alphaNumericRegex, field)
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}
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func isAlpha(top interface{}, current interface{}, field interface{}, param string) bool {
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return matchesRegex(alphaRegex, field)
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}
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func hasValue(top interface{}, current interface{}, field interface{}, param string) bool {
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st := reflect.ValueOf(field)
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switch st.Kind() {
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case reflect.Slice, reflect.Map, reflect.Array:
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return field != nil && int64(st.Len()) > 0
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default:
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return field != nil && field != reflect.Zero(reflect.TypeOf(field)).Interface()
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}
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}
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func isGteField(top interface{}, current interface{}, field interface{}, param string) bool {
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if current == nil {
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panic("struct not passed for cross validation")
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}
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currentVal := reflect.ValueOf(current)
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if currentVal.Kind() == reflect.Ptr && !currentVal.IsNil() {
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currentVal = reflect.ValueOf(currentVal.Elem().Interface())
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}
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var currentFielVal reflect.Value
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switch currentVal.Kind() {
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case reflect.Struct:
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if currentVal.Type() == reflect.TypeOf(time.Time{}) {
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currentFielVal = currentVal
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break
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}
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f := currentVal.FieldByName(param)
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if f.Kind() == reflect.Invalid {
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panic(fmt.Sprintf("Field \"%s\" not found in struct", param))
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}
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currentFielVal = f
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default:
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currentFielVal = currentVal
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}
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if currentFielVal.Kind() == reflect.Ptr && !currentFielVal.IsNil() {
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currentFielVal = reflect.ValueOf(currentFielVal.Elem().Interface())
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}
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fv := reflect.ValueOf(field)
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switch fv.Kind() {
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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return fv.Int() >= currentFielVal.Int()
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
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return fv.Uint() >= currentFielVal.Uint()
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case reflect.Float32, reflect.Float64:
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return fv.Float() >= currentFielVal.Float()
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case reflect.Struct:
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if fv.Type() == reflect.TypeOf(time.Time{}) {
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if currentFielVal.Type() != reflect.TypeOf(time.Time{}) {
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panic("Bad Top Level field type")
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}
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t := currentFielVal.Interface().(time.Time)
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fieldTime := field.(time.Time)
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return fieldTime.After(t) || fieldTime.Equal(t)
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}
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}
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panic(fmt.Sprintf("Bad field type %T", field))
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}
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func isGtField(top interface{}, current interface{}, field interface{}, param string) bool {
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if current == nil {
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panic("struct not passed for cross validation")
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}
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currentVal := reflect.ValueOf(current)
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if currentVal.Kind() == reflect.Ptr && !currentVal.IsNil() {
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currentVal = reflect.ValueOf(currentVal.Elem().Interface())
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}
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var currentFielVal reflect.Value
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switch currentVal.Kind() {
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case reflect.Struct:
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if currentVal.Type() == reflect.TypeOf(time.Time{}) {
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currentFielVal = currentVal
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break
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}
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f := currentVal.FieldByName(param)
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if f.Kind() == reflect.Invalid {
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panic(fmt.Sprintf("Field \"%s\" not found in struct", param))
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}
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currentFielVal = f
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default:
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currentFielVal = currentVal
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}
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if currentFielVal.Kind() == reflect.Ptr && !currentFielVal.IsNil() {
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currentFielVal = reflect.ValueOf(currentFielVal.Elem().Interface())
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}
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fv := reflect.ValueOf(field)
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switch fv.Kind() {
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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return fv.Int() > currentFielVal.Int()
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
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return fv.Uint() > currentFielVal.Uint()
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case reflect.Float32, reflect.Float64:
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return fv.Float() > currentFielVal.Float()
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case reflect.Struct:
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if fv.Type() == reflect.TypeOf(time.Time{}) {
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if currentFielVal.Type() != reflect.TypeOf(time.Time{}) {
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panic("Bad Top Level field type")
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}
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t := currentFielVal.Interface().(time.Time)
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fieldTime := field.(time.Time)
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return fieldTime.After(t)
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}
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}
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panic(fmt.Sprintf("Bad field type %T", field))
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}
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func isGte(top interface{}, current interface{}, field interface{}, param string) bool {
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st := reflect.ValueOf(field)
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switch st.Kind() {
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case reflect.String:
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p := asInt(param)
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return int64(len(st.String())) >= p
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case reflect.Slice, reflect.Map, reflect.Array:
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p := asInt(param)
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return int64(st.Len()) >= p
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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p := asInt(param)
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return st.Int() >= p
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
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p := asUint(param)
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return st.Uint() >= p
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case reflect.Float32, reflect.Float64:
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p := asFloat(param)
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return st.Float() >= p
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case reflect.Struct:
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if st.Type() == reflect.TypeOf(time.Time{}) {
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now := time.Now().UTC()
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t := field.(time.Time)
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return t.After(now) || t.Equal(now)
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}
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}
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panic(fmt.Sprintf("Bad field type %T", field))
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}
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func isGt(top interface{}, current interface{}, field interface{}, param string) bool {
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st := reflect.ValueOf(field)
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switch st.Kind() {
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case reflect.String:
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p := asInt(param)
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return int64(len(st.String())) > p
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case reflect.Slice, reflect.Map, reflect.Array:
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p := asInt(param)
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return int64(st.Len()) > p
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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p := asInt(param)
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return st.Int() > p
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
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p := asUint(param)
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return st.Uint() > p
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case reflect.Float32, reflect.Float64:
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p := asFloat(param)
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return st.Float() > p
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case reflect.Struct:
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if st.Type() == reflect.TypeOf(time.Time{}) {
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return field.(time.Time).After(time.Now().UTC())
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}
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}
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panic(fmt.Sprintf("Bad field type %T", field))
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}
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// length tests whether a variable's length is equal to a given
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// value. For strings it tests the number of characters whereas
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// for maps and slices it tests the number of items.
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func hasLengthOf(top interface{}, current interface{}, field interface{}, param string) bool {
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st := reflect.ValueOf(field)
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switch st.Kind() {
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case reflect.String:
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p := asInt(param)
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return int64(len(st.String())) == p
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case reflect.Slice, reflect.Map, reflect.Array:
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p := asInt(param)
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return int64(st.Len()) == p
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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p := asInt(param)
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return st.Int() == p
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
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p := asUint(param)
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return st.Uint() == p
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case reflect.Float32, reflect.Float64:
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p := asFloat(param)
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return st.Float() == p
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}
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panic(fmt.Sprintf("Bad field type %T", field))
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}
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// min tests whether a variable value is larger or equal to a given
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// number. For number types, it's a simple lesser-than test; for
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// strings it tests the number of characters whereas for maps
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// and slices it tests the number of items.
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func hasMinOf(top interface{}, current interface{}, field interface{}, param string) bool {
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return isGte(top, current, field, param)
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}
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func isLteField(top interface{}, current interface{}, field interface{}, param string) bool {
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if current == nil {
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panic("struct not passed for cross validation")
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}
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currentVal := reflect.ValueOf(current)
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|
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if currentVal.Kind() == reflect.Ptr && !currentVal.IsNil() {
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currentVal = reflect.ValueOf(currentVal.Elem().Interface())
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}
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|
|
|
var currentFielVal reflect.Value
|
|
|
|
switch currentVal.Kind() {
|
|
|
|
case reflect.Struct:
|
|
|
|
if currentVal.Type() == reflect.TypeOf(time.Time{}) {
|
|
currentFielVal = currentVal
|
|
break
|
|
}
|
|
|
|
f := currentVal.FieldByName(param)
|
|
|
|
if f.Kind() == reflect.Invalid {
|
|
panic(fmt.Sprintf("Field \"%s\" not found in struct", param))
|
|
}
|
|
|
|
currentFielVal = f
|
|
|
|
default:
|
|
|
|
currentFielVal = currentVal
|
|
}
|
|
|
|
if currentFielVal.Kind() == reflect.Ptr && !currentFielVal.IsNil() {
|
|
|
|
currentFielVal = reflect.ValueOf(currentFielVal.Elem().Interface())
|
|
}
|
|
|
|
fv := reflect.ValueOf(field)
|
|
|
|
switch fv.Kind() {
|
|
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
|
|
return fv.Int() <= currentFielVal.Int()
|
|
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
|
|
|
|
return fv.Uint() <= currentFielVal.Uint()
|
|
|
|
case reflect.Float32, reflect.Float64:
|
|
|
|
return fv.Float() <= currentFielVal.Float()
|
|
|
|
case reflect.Struct:
|
|
|
|
if fv.Type() == reflect.TypeOf(time.Time{}) {
|
|
|
|
if currentFielVal.Type() != reflect.TypeOf(time.Time{}) {
|
|
panic("Bad Top Level field type")
|
|
}
|
|
|
|
t := currentFielVal.Interface().(time.Time)
|
|
fieldTime := field.(time.Time)
|
|
|
|
return fieldTime.Before(t) || fieldTime.Equal(t)
|
|
}
|
|
}
|
|
|
|
panic(fmt.Sprintf("Bad field type %T", field))
|
|
}
|
|
|
|
func isLtField(top interface{}, current interface{}, field interface{}, param string) bool {
|
|
|
|
if current == nil {
|
|
panic("struct not passed for cross validation")
|
|
}
|
|
|
|
currentVal := reflect.ValueOf(current)
|
|
|
|
if currentVal.Kind() == reflect.Ptr && !currentVal.IsNil() {
|
|
currentVal = reflect.ValueOf(currentVal.Elem().Interface())
|
|
}
|
|
|
|
var currentFielVal reflect.Value
|
|
|
|
switch currentVal.Kind() {
|
|
|
|
case reflect.Struct:
|
|
|
|
if currentVal.Type() == reflect.TypeOf(time.Time{}) {
|
|
currentFielVal = currentVal
|
|
break
|
|
}
|
|
|
|
f := currentVal.FieldByName(param)
|
|
|
|
if f.Kind() == reflect.Invalid {
|
|
panic(fmt.Sprintf("Field \"%s\" not found in struct", param))
|
|
}
|
|
|
|
currentFielVal = f
|
|
|
|
default:
|
|
|
|
currentFielVal = currentVal
|
|
}
|
|
|
|
if currentFielVal.Kind() == reflect.Ptr && !currentFielVal.IsNil() {
|
|
|
|
currentFielVal = reflect.ValueOf(currentFielVal.Elem().Interface())
|
|
}
|
|
|
|
fv := reflect.ValueOf(field)
|
|
|
|
switch fv.Kind() {
|
|
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
|
|
return fv.Int() < currentFielVal.Int()
|
|
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
|
|
|
|
return fv.Uint() < currentFielVal.Uint()
|
|
|
|
case reflect.Float32, reflect.Float64:
|
|
|
|
return fv.Float() < currentFielVal.Float()
|
|
|
|
case reflect.Struct:
|
|
|
|
if fv.Type() == reflect.TypeOf(time.Time{}) {
|
|
|
|
if currentFielVal.Type() != reflect.TypeOf(time.Time{}) {
|
|
panic("Bad Top Level field type")
|
|
}
|
|
|
|
t := currentFielVal.Interface().(time.Time)
|
|
fieldTime := field.(time.Time)
|
|
|
|
return fieldTime.Before(t)
|
|
}
|
|
}
|
|
|
|
panic(fmt.Sprintf("Bad field type %T", field))
|
|
}
|
|
|
|
func isLte(top interface{}, current interface{}, field interface{}, param string) bool {
|
|
|
|
st := reflect.ValueOf(field)
|
|
|
|
switch st.Kind() {
|
|
|
|
case reflect.String:
|
|
p := asInt(param)
|
|
|
|
return int64(len(st.String())) <= p
|
|
|
|
case reflect.Slice, reflect.Map, reflect.Array:
|
|
p := asInt(param)
|
|
|
|
return int64(st.Len()) <= p
|
|
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
p := asInt(param)
|
|
|
|
return st.Int() <= p
|
|
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
|
|
p := asUint(param)
|
|
|
|
return st.Uint() <= p
|
|
|
|
case reflect.Float32, reflect.Float64:
|
|
p := asFloat(param)
|
|
|
|
return st.Float() <= p
|
|
|
|
case reflect.Struct:
|
|
|
|
if st.Type() == reflect.TypeOf(time.Time{}) {
|
|
|
|
now := time.Now().UTC()
|
|
t := field.(time.Time)
|
|
|
|
return t.Before(now) || t.Equal(now)
|
|
}
|
|
}
|
|
|
|
panic(fmt.Sprintf("Bad field type %T", field))
|
|
}
|
|
|
|
func isLt(top interface{}, current interface{}, field interface{}, param string) bool {
|
|
|
|
st := reflect.ValueOf(field)
|
|
|
|
switch st.Kind() {
|
|
|
|
case reflect.String:
|
|
p := asInt(param)
|
|
|
|
return int64(len(st.String())) < p
|
|
|
|
case reflect.Slice, reflect.Map, reflect.Array:
|
|
p := asInt(param)
|
|
|
|
return int64(st.Len()) < p
|
|
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
p := asInt(param)
|
|
|
|
return st.Int() < p
|
|
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
|
|
p := asUint(param)
|
|
|
|
return st.Uint() < p
|
|
|
|
case reflect.Float32, reflect.Float64:
|
|
p := asFloat(param)
|
|
|
|
return st.Float() < p
|
|
|
|
case reflect.Struct:
|
|
|
|
if st.Type() == reflect.TypeOf(time.Time{}) {
|
|
|
|
return field.(time.Time).Before(time.Now().UTC())
|
|
}
|
|
}
|
|
|
|
panic(fmt.Sprintf("Bad field type %T", field))
|
|
}
|
|
|
|
// max tests whether a variable value is lesser than a given
|
|
// value. For numbers, it's a simple lesser-than test; for
|
|
// strings it tests the number of characters whereas for maps
|
|
// and slices it tests the number of items.
|
|
func hasMaxOf(top interface{}, current interface{}, field interface{}, param string) bool {
|
|
|
|
return isLte(top, current, field, param)
|
|
}
|
|
|
|
// asInt retuns the parameter as a int64
|
|
// or panics if it can't convert
|
|
func asInt(param string) int64 {
|
|
|
|
i, err := strconv.ParseInt(param, 0, 64)
|
|
panicIf(err)
|
|
|
|
return i
|
|
}
|
|
|
|
// asUint returns the parameter as a uint64
|
|
// or panics if it can't convert
|
|
func asUint(param string) uint64 {
|
|
|
|
i, err := strconv.ParseUint(param, 0, 64)
|
|
panicIf(err)
|
|
|
|
return i
|
|
}
|
|
|
|
// asFloat returns the parameter as a float64
|
|
// or panics if it can't convert
|
|
func asFloat(param string) float64 {
|
|
|
|
i, err := strconv.ParseFloat(param, 64)
|
|
panicIf(err)
|
|
|
|
return i
|
|
}
|
|
|
|
func panicIf(err error) {
|
|
if err != nil {
|
|
panic(err.Error())
|
|
}
|
|
}
|
|
|