513cebe7b7
* Add Virtual Kubelet provider for VIC Initial virtual kubelet provider for VMware VIC. This provider currently handles creating and starting of a pod VM via the VIC portlayer and persona server. Image store handling via the VIC persona server. This provider currently requires the feature/wolfpack branch of VIC. * Added pod stop and delete. Also added node capacity. Added the ability to stop and delete pod VMs via VIC. Also retrieve node capacity information from the VCH. * Cleanup and readme file Some file clean up and added a Readme.md markdown file for the VIC provider. * Cleaned up errors, added function comments, moved operation code 1. Cleaned up error handling. Set standard for creating errors. 2. Added method prototype comments for all interface functions. 3. Moved PodCreator, PodStarter, PodStopper, and PodDeleter to a new folder. * Add mocking code and unit tests for podcache, podcreator, and podstarter Used the unit test framework used in VIC to handle assertions in the provider's unit test. Mocking code generated using OSS project mockery, which is compatible with the testify assertion framework. * Vendored packages for the VIC provider Requires feature/wolfpack branch of VIC and a few specific commit sha of projects used within VIC. * Implementation of POD Stopper and Deleter unit tests (#4) * Updated files for initial PR
1214 lines
32 KiB
Go
1214 lines
32 KiB
Go
// Package govalidator is package of validators and sanitizers for strings, structs and collections.
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package govalidator
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import (
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"bytes"
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"crypto/rsa"
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"crypto/x509"
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"encoding/base64"
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"encoding/json"
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"encoding/pem"
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"fmt"
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"io/ioutil"
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"net"
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"net/url"
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"reflect"
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"regexp"
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"sort"
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"strconv"
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"strings"
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"time"
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"unicode"
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"unicode/utf8"
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)
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var (
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fieldsRequiredByDefault bool
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notNumberRegexp = regexp.MustCompile("[^0-9]+")
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whiteSpacesAndMinus = regexp.MustCompile("[\\s-]+")
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paramsRegexp = regexp.MustCompile("\\(.*\\)$")
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)
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const maxURLRuneCount = 2083
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const minURLRuneCount = 3
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const RF3339WithoutZone = "2006-01-02T15:04:05"
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// SetFieldsRequiredByDefault causes validation to fail when struct fields
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// do not include validations or are not explicitly marked as exempt (using `valid:"-"` or `valid:"email,optional"`).
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// This struct definition will fail govalidator.ValidateStruct() (and the field values do not matter):
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// type exampleStruct struct {
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// Name string ``
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// Email string `valid:"email"`
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// This, however, will only fail when Email is empty or an invalid email address:
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// type exampleStruct2 struct {
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// Name string `valid:"-"`
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// Email string `valid:"email"`
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// Lastly, this will only fail when Email is an invalid email address but not when it's empty:
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// type exampleStruct2 struct {
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// Name string `valid:"-"`
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// Email string `valid:"email,optional"`
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func SetFieldsRequiredByDefault(value bool) {
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fieldsRequiredByDefault = value
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}
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// IsEmail check if the string is an email.
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func IsEmail(email string) bool {
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if len(email) < 6 || len(email) > 254 {
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return false
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}
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at := strings.LastIndex(email, "@")
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if at <= 0 || at > len(email)-3 {
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return false
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}
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user := email[:at]
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host := email[at+1:]
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if len(user) > 64 {
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return false
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}
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if userDotRegexp.MatchString(user) || !userRegexp.MatchString(user) || !hostRegexp.MatchString(host) {
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return false
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}
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switch host {
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case "localhost", "example.com":
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return true
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}
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if _, err := net.LookupMX(host); err != nil {
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if _, err := net.LookupIP(host); err != nil {
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return false
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}
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}
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return true
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}
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// IsURL check if the string is an URL.
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func IsURL(str string) bool {
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if str == "" || utf8.RuneCountInString(str) >= maxURLRuneCount || len(str) <= minURLRuneCount || strings.HasPrefix(str, ".") {
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return false
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}
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strTemp := str
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if strings.Index(str, ":") >= 0 && strings.Index(str, "://") == -1 {
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// support no indicated urlscheme but with colon for port number
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// http:// is appended so url.Parse will succeed, strTemp used so it does not impact rxURL.MatchString
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strTemp = "http://" + str
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}
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u, err := url.Parse(strTemp)
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if err != nil {
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return false
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}
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if strings.HasPrefix(u.Host, ".") {
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return false
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}
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if u.Host == "" && (u.Path != "" && !strings.Contains(u.Path, ".")) {
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return false
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}
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return rxURL.MatchString(str)
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}
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// IsRequestURL check if the string rawurl, assuming
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// it was received in an HTTP request, is a valid
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// URL confirm to RFC 3986
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func IsRequestURL(rawurl string) bool {
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url, err := url.ParseRequestURI(rawurl)
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if err != nil {
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return false //Couldn't even parse the rawurl
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}
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if len(url.Scheme) == 0 {
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return false //No Scheme found
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}
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return true
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}
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// IsRequestURI check if the string rawurl, assuming
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// it was received in an HTTP request, is an
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// absolute URI or an absolute path.
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func IsRequestURI(rawurl string) bool {
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_, err := url.ParseRequestURI(rawurl)
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return err == nil
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}
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// IsAlpha check if the string contains only letters (a-zA-Z). Empty string is valid.
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func IsAlpha(str string) bool {
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if IsNull(str) {
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return true
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}
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return rxAlpha.MatchString(str)
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}
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//IsUTFLetter check if the string contains only unicode letter characters.
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//Similar to IsAlpha but for all languages. Empty string is valid.
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func IsUTFLetter(str string) bool {
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if IsNull(str) {
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return true
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}
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for _, c := range str {
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if !unicode.IsLetter(c) {
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return false
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}
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}
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return true
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}
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// IsAlphanumeric check if the string contains only letters and numbers. Empty string is valid.
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func IsAlphanumeric(str string) bool {
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if IsNull(str) {
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return true
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}
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return rxAlphanumeric.MatchString(str)
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}
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// IsUTFLetterNumeric check if the string contains only unicode letters and numbers. Empty string is valid.
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func IsUTFLetterNumeric(str string) bool {
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if IsNull(str) {
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return true
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}
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for _, c := range str {
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if !unicode.IsLetter(c) && !unicode.IsNumber(c) { //letters && numbers are ok
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return false
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}
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}
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return true
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}
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// IsNumeric check if the string contains only numbers. Empty string is valid.
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func IsNumeric(str string) bool {
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if IsNull(str) {
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return true
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}
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return rxNumeric.MatchString(str)
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}
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// IsUTFNumeric check if the string contains only unicode numbers of any kind.
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// Numbers can be 0-9 but also Fractions ¾,Roman Ⅸ and Hangzhou 〩. Empty string is valid.
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func IsUTFNumeric(str string) bool {
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if IsNull(str) {
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return true
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}
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if strings.IndexAny(str, "+-") > 0 {
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return false
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}
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if len(str) > 1 {
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str = strings.TrimPrefix(str, "-")
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str = strings.TrimPrefix(str, "+")
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}
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for _, c := range str {
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if unicode.IsNumber(c) == false { //numbers && minus sign are ok
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return false
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}
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}
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return true
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}
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// IsUTFDigit check if the string contains only unicode radix-10 decimal digits. Empty string is valid.
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func IsUTFDigit(str string) bool {
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if IsNull(str) {
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return true
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}
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if strings.IndexAny(str, "+-") > 0 {
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return false
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}
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if len(str) > 1 {
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str = strings.TrimPrefix(str, "-")
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str = strings.TrimPrefix(str, "+")
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}
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for _, c := range str {
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if !unicode.IsDigit(c) { //digits && minus sign are ok
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return false
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}
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}
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return true
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}
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// IsHexadecimal check if the string is a hexadecimal number.
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func IsHexadecimal(str string) bool {
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return rxHexadecimal.MatchString(str)
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}
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// IsHexcolor check if the string is a hexadecimal color.
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func IsHexcolor(str string) bool {
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return rxHexcolor.MatchString(str)
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}
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// IsRGBcolor check if the string is a valid RGB color in form rgb(RRR, GGG, BBB).
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func IsRGBcolor(str string) bool {
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return rxRGBcolor.MatchString(str)
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}
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// IsLowerCase check if the string is lowercase. Empty string is valid.
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func IsLowerCase(str string) bool {
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if IsNull(str) {
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return true
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}
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return str == strings.ToLower(str)
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}
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// IsUpperCase check if the string is uppercase. Empty string is valid.
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func IsUpperCase(str string) bool {
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if IsNull(str) {
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return true
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}
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return str == strings.ToUpper(str)
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}
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// HasLowerCase check if the string contains at least 1 lowercase. Empty string is valid.
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func HasLowerCase(str string) bool {
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if IsNull(str) {
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return true
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}
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return rxHasLowerCase.MatchString(str)
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}
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// HasUpperCase check if the string contians as least 1 uppercase. Empty string is valid.
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func HasUpperCase(str string) bool {
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if IsNull(str) {
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return true
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}
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return rxHasUpperCase.MatchString(str)
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}
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// IsInt check if the string is an integer. Empty string is valid.
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func IsInt(str string) bool {
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if IsNull(str) {
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return true
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}
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return rxInt.MatchString(str)
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}
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// IsFloat check if the string is a float.
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func IsFloat(str string) bool {
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return str != "" && rxFloat.MatchString(str)
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}
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// IsDivisibleBy check if the string is a number that's divisible by another.
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// If second argument is not valid integer or zero, it's return false.
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// Otherwise, if first argument is not valid integer or zero, it's return true (Invalid string converts to zero).
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func IsDivisibleBy(str, num string) bool {
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f, _ := ToFloat(str)
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p := int64(f)
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q, _ := ToInt(num)
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if q == 0 {
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return false
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}
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return (p == 0) || (p%q == 0)
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}
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// IsNull check if the string is null.
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func IsNull(str string) bool {
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return len(str) == 0
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}
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// IsByteLength check if the string's length (in bytes) falls in a range.
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func IsByteLength(str string, min, max int) bool {
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return len(str) >= min && len(str) <= max
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}
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// IsUUIDv3 check if the string is a UUID version 3.
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func IsUUIDv3(str string) bool {
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return rxUUID3.MatchString(str)
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}
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// IsUUIDv4 check if the string is a UUID version 4.
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func IsUUIDv4(str string) bool {
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return rxUUID4.MatchString(str)
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}
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// IsUUIDv5 check if the string is a UUID version 5.
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func IsUUIDv5(str string) bool {
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return rxUUID5.MatchString(str)
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}
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// IsUUID check if the string is a UUID (version 3, 4 or 5).
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func IsUUID(str string) bool {
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return rxUUID.MatchString(str)
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}
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// IsCreditCard check if the string is a credit card.
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func IsCreditCard(str string) bool {
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sanitized := notNumberRegexp.ReplaceAllString(str, "")
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if !rxCreditCard.MatchString(sanitized) {
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return false
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}
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var sum int64
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var digit string
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var tmpNum int64
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var shouldDouble bool
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for i := len(sanitized) - 1; i >= 0; i-- {
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digit = sanitized[i:(i + 1)]
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tmpNum, _ = ToInt(digit)
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if shouldDouble {
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tmpNum *= 2
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if tmpNum >= 10 {
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sum += ((tmpNum % 10) + 1)
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} else {
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sum += tmpNum
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}
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} else {
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sum += tmpNum
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}
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shouldDouble = !shouldDouble
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}
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if sum%10 == 0 {
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return true
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}
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return false
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}
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// IsISBN10 check if the string is an ISBN version 10.
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func IsISBN10(str string) bool {
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return IsISBN(str, 10)
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}
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// IsISBN13 check if the string is an ISBN version 13.
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func IsISBN13(str string) bool {
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return IsISBN(str, 13)
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}
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// IsISBN check if the string is an ISBN (version 10 or 13).
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// If version value is not equal to 10 or 13, it will be check both variants.
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func IsISBN(str string, version int) bool {
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sanitized := whiteSpacesAndMinus.ReplaceAllString(str, "")
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var checksum int32
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var i int32
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if version == 10 {
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if !rxISBN10.MatchString(sanitized) {
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return false
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}
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for i = 0; i < 9; i++ {
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checksum += (i + 1) * int32(sanitized[i]-'0')
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}
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if sanitized[9] == 'X' {
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checksum += 10 * 10
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} else {
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checksum += 10 * int32(sanitized[9]-'0')
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}
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if checksum%11 == 0 {
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return true
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}
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return false
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} else if version == 13 {
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if !rxISBN13.MatchString(sanitized) {
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return false
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}
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factor := []int32{1, 3}
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for i = 0; i < 12; i++ {
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checksum += factor[i%2] * int32(sanitized[i]-'0')
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}
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if (int32(sanitized[12]-'0'))-((10-(checksum%10))%10) == 0 {
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return true
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}
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return false
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}
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return IsISBN(str, 10) || IsISBN(str, 13)
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}
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// IsJSON check if the string is valid JSON (note: uses json.Unmarshal).
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func IsJSON(str string) bool {
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var js json.RawMessage
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return json.Unmarshal([]byte(str), &js) == nil
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}
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// IsMultibyte check if the string contains one or more multibyte chars. Empty string is valid.
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func IsMultibyte(str string) bool {
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if IsNull(str) {
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return true
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}
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return rxMultibyte.MatchString(str)
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}
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// IsASCII check if the string contains ASCII chars only. Empty string is valid.
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func IsASCII(str string) bool {
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if IsNull(str) {
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return true
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}
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return rxASCII.MatchString(str)
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}
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// IsPrintableASCII check if the string contains printable ASCII chars only. Empty string is valid.
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func IsPrintableASCII(str string) bool {
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if IsNull(str) {
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return true
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}
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return rxPrintableASCII.MatchString(str)
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}
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// IsFullWidth check if the string contains any full-width chars. Empty string is valid.
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func IsFullWidth(str string) bool {
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if IsNull(str) {
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return true
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}
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return rxFullWidth.MatchString(str)
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}
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// IsHalfWidth check if the string contains any half-width chars. Empty string is valid.
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func IsHalfWidth(str string) bool {
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if IsNull(str) {
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return true
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}
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return rxHalfWidth.MatchString(str)
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}
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|
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// IsVariableWidth check if the string contains a mixture of full and half-width chars. Empty string is valid.
|
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func IsVariableWidth(str string) bool {
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if IsNull(str) {
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return true
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}
|
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return rxHalfWidth.MatchString(str) && rxFullWidth.MatchString(str)
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}
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// IsBase64 check if a string is base64 encoded.
|
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func IsBase64(str string) bool {
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return rxBase64.MatchString(str)
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}
|
|
|
|
// IsFilePath check is a string is Win or Unix file path and returns it's type.
|
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func IsFilePath(str string) (bool, int) {
|
|
if rxWinPath.MatchString(str) {
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|
//check windows path limit see:
|
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// http://msdn.microsoft.com/en-us/library/aa365247(VS.85).aspx#maxpath
|
|
if len(str[3:]) > 32767 {
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return false, Win
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|
}
|
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return true, Win
|
|
} else if rxUnixPath.MatchString(str) {
|
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return true, Unix
|
|
}
|
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return false, Unknown
|
|
}
|
|
|
|
// IsDataURI checks if a string is base64 encoded data URI such as an image
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|
func IsDataURI(str string) bool {
|
|
dataURI := strings.Split(str, ",")
|
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if !rxDataURI.MatchString(dataURI[0]) {
|
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return false
|
|
}
|
|
return IsBase64(dataURI[1])
|
|
}
|
|
|
|
// IsISO3166Alpha2 checks if a string is valid two-letter country code
|
|
func IsISO3166Alpha2(str string) bool {
|
|
for _, entry := range ISO3166List {
|
|
if str == entry.Alpha2Code {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
// IsISO3166Alpha3 checks if a string is valid three-letter country code
|
|
func IsISO3166Alpha3(str string) bool {
|
|
for _, entry := range ISO3166List {
|
|
if str == entry.Alpha3Code {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
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|
|
// IsISO693Alpha2 checks if a string is valid two-letter language code
|
|
func IsISO693Alpha2(str string) bool {
|
|
for _, entry := range ISO693List {
|
|
if str == entry.Alpha2Code {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
// IsISO693Alpha3b checks if a string is valid three-letter language code
|
|
func IsISO693Alpha3b(str string) bool {
|
|
for _, entry := range ISO693List {
|
|
if str == entry.Alpha3bCode {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
// IsDNSName will validate the given string as a DNS name
|
|
func IsDNSName(str string) bool {
|
|
if str == "" || len(strings.Replace(str, ".", "", -1)) > 255 {
|
|
// constraints already violated
|
|
return false
|
|
}
|
|
return !IsIP(str) && rxDNSName.MatchString(str)
|
|
}
|
|
|
|
// IsHash checks if a string is a hash of type algorithm.
|
|
// Algorithm is one of ['md4', 'md5', 'sha1', 'sha256', 'sha384', 'sha512', 'ripemd128', 'ripemd160', 'tiger128', 'tiger160', 'tiger192', 'crc32', 'crc32b']
|
|
func IsHash(str string, algorithm string) bool {
|
|
len := "0"
|
|
algo := strings.ToLower(algorithm)
|
|
|
|
if algo == "crc32" || algo == "crc32b" {
|
|
len = "8"
|
|
} else if algo == "md5" || algo == "md4" || algo == "ripemd128" || algo == "tiger128" {
|
|
len = "32"
|
|
} else if algo == "sha1" || algo == "ripemd160" || algo == "tiger160" {
|
|
len = "40"
|
|
} else if algo == "tiger192" {
|
|
len = "48"
|
|
} else if algo == "sha256" {
|
|
len = "64"
|
|
} else if algo == "sha384" {
|
|
len = "96"
|
|
} else if algo == "sha512" {
|
|
len = "128"
|
|
} else {
|
|
return false
|
|
}
|
|
|
|
return Matches(str, "^[a-f0-9]{"+len+"}$")
|
|
}
|
|
|
|
// IsDialString validates the given string for usage with the various Dial() functions
|
|
func IsDialString(str string) bool {
|
|
|
|
if h, p, err := net.SplitHostPort(str); err == nil && h != "" && p != "" && (IsDNSName(h) || IsIP(h)) && IsPort(p) {
|
|
return true
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
// IsIP checks if a string is either IP version 4 or 6.
|
|
func IsIP(str string) bool {
|
|
return net.ParseIP(str) != nil
|
|
}
|
|
|
|
// IsPort checks if a string represents a valid port
|
|
func IsPort(str string) bool {
|
|
if i, err := strconv.Atoi(str); err == nil && i > 0 && i < 65536 {
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
// IsIPv4 check if the string is an IP version 4.
|
|
func IsIPv4(str string) bool {
|
|
ip := net.ParseIP(str)
|
|
return ip != nil && strings.Contains(str, ".")
|
|
}
|
|
|
|
// IsIPv6 check if the string is an IP version 6.
|
|
func IsIPv6(str string) bool {
|
|
ip := net.ParseIP(str)
|
|
return ip != nil && strings.Contains(str, ":")
|
|
}
|
|
|
|
// IsCIDR check if the string is an valid CIDR notiation (IPV4 & IPV6)
|
|
func IsCIDR(str string) bool {
|
|
_, _, err := net.ParseCIDR(str)
|
|
return err == nil
|
|
}
|
|
|
|
// IsMAC check if a string is valid MAC address.
|
|
// Possible MAC formats:
|
|
// 01:23:45:67:89:ab
|
|
// 01:23:45:67:89:ab:cd:ef
|
|
// 01-23-45-67-89-ab
|
|
// 01-23-45-67-89-ab-cd-ef
|
|
// 0123.4567.89ab
|
|
// 0123.4567.89ab.cdef
|
|
func IsMAC(str string) bool {
|
|
_, err := net.ParseMAC(str)
|
|
return err == nil
|
|
}
|
|
|
|
// IsHost checks if the string is a valid IP (both v4 and v6) or a valid DNS name
|
|
func IsHost(str string) bool {
|
|
return IsIP(str) || IsDNSName(str)
|
|
}
|
|
|
|
// IsMongoID check if the string is a valid hex-encoded representation of a MongoDB ObjectId.
|
|
func IsMongoID(str string) bool {
|
|
return rxHexadecimal.MatchString(str) && (len(str) == 24)
|
|
}
|
|
|
|
// IsLatitude check if a string is valid latitude.
|
|
func IsLatitude(str string) bool {
|
|
return rxLatitude.MatchString(str)
|
|
}
|
|
|
|
// IsLongitude check if a string is valid longitude.
|
|
func IsLongitude(str string) bool {
|
|
return rxLongitude.MatchString(str)
|
|
}
|
|
|
|
// IsRsaPublicKey check if a string is valid public key with provided length
|
|
func IsRsaPublicKey(str string, keylen int) bool {
|
|
bb := bytes.NewBufferString(str)
|
|
pemBytes, err := ioutil.ReadAll(bb)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
block, _ := pem.Decode(pemBytes)
|
|
if block != nil && block.Type != "PUBLIC KEY" {
|
|
return false
|
|
}
|
|
var der []byte
|
|
|
|
if block != nil {
|
|
der = block.Bytes
|
|
} else {
|
|
der, err = base64.StdEncoding.DecodeString(str)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
}
|
|
|
|
key, err := x509.ParsePKIXPublicKey(der)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
pubkey, ok := key.(*rsa.PublicKey)
|
|
if !ok {
|
|
return false
|
|
}
|
|
bitlen := len(pubkey.N.Bytes()) * 8
|
|
return bitlen == int(keylen)
|
|
}
|
|
|
|
func toJSONName(tag string) string {
|
|
if tag == "" {
|
|
return ""
|
|
}
|
|
|
|
// JSON name always comes first. If there's no options then split[0] is
|
|
// JSON name, if JSON name is not set, then split[0] is an empty string.
|
|
split := strings.SplitN(tag, ",", 2)
|
|
|
|
name := split[0]
|
|
|
|
// However it is possible that the field is skipped when
|
|
// (de-)serializing from/to JSON, in which case assume that there is no
|
|
// tag name to use
|
|
if name == "-" {
|
|
return ""
|
|
}
|
|
return name
|
|
}
|
|
|
|
// ValidateStruct use tags for fields.
|
|
// result will be equal to `false` if there are any errors.
|
|
func ValidateStruct(s interface{}) (bool, error) {
|
|
if s == nil {
|
|
return true, nil
|
|
}
|
|
result := true
|
|
var err error
|
|
val := reflect.ValueOf(s)
|
|
if val.Kind() == reflect.Interface || val.Kind() == reflect.Ptr {
|
|
val = val.Elem()
|
|
}
|
|
// we only accept structs
|
|
if val.Kind() != reflect.Struct {
|
|
return false, fmt.Errorf("function only accepts structs; got %s", val.Kind())
|
|
}
|
|
var errs Errors
|
|
for i := 0; i < val.NumField(); i++ {
|
|
valueField := val.Field(i)
|
|
typeField := val.Type().Field(i)
|
|
if typeField.PkgPath != "" {
|
|
continue // Private field
|
|
}
|
|
structResult := true
|
|
if (valueField.Kind() == reflect.Struct ||
|
|
(valueField.Kind() == reflect.Ptr && valueField.Elem().Kind() == reflect.Struct)) &&
|
|
typeField.Tag.Get(tagName) != "-" {
|
|
var err error
|
|
structResult, err = ValidateStruct(valueField.Interface())
|
|
if err != nil {
|
|
errs = append(errs, err)
|
|
}
|
|
}
|
|
resultField, err2 := typeCheck(valueField, typeField, val, nil)
|
|
if err2 != nil {
|
|
|
|
// Replace structure name with JSON name if there is a tag on the variable
|
|
jsonTag := toJSONName(typeField.Tag.Get("json"))
|
|
if jsonTag != "" {
|
|
switch jsonError := err2.(type) {
|
|
case Error:
|
|
jsonError.Name = jsonTag
|
|
err2 = jsonError
|
|
case Errors:
|
|
for i2, err3 := range jsonError {
|
|
switch customErr := err3.(type) {
|
|
case Error:
|
|
customErr.Name = jsonTag
|
|
jsonError[i2] = customErr
|
|
}
|
|
}
|
|
|
|
err2 = jsonError
|
|
}
|
|
}
|
|
|
|
errs = append(errs, err2)
|
|
}
|
|
result = result && resultField && structResult
|
|
}
|
|
if len(errs) > 0 {
|
|
err = errs
|
|
}
|
|
return result, err
|
|
}
|
|
|
|
// parseTagIntoMap parses a struct tag `valid:required~Some error message,length(2|3)` into map[string]string{"required": "Some error message", "length(2|3)": ""}
|
|
func parseTagIntoMap(tag string) tagOptionsMap {
|
|
optionsMap := make(tagOptionsMap)
|
|
options := strings.Split(tag, ",")
|
|
|
|
for _, option := range options {
|
|
option = strings.TrimSpace(option)
|
|
|
|
validationOptions := strings.Split(option, "~")
|
|
if !isValidTag(validationOptions[0]) {
|
|
continue
|
|
}
|
|
if len(validationOptions) == 2 {
|
|
optionsMap[validationOptions[0]] = validationOptions[1]
|
|
} else {
|
|
optionsMap[validationOptions[0]] = ""
|
|
}
|
|
}
|
|
return optionsMap
|
|
}
|
|
|
|
func isValidTag(s string) bool {
|
|
if s == "" {
|
|
return false
|
|
}
|
|
for _, c := range s {
|
|
switch {
|
|
case strings.ContainsRune("\\'\"!#$%&()*+-./:<=>?@[]^_{|}~ ", c):
|
|
// Backslash and quote chars are reserved, but
|
|
// otherwise any punctuation chars are allowed
|
|
// in a tag name.
|
|
default:
|
|
if !unicode.IsLetter(c) && !unicode.IsDigit(c) {
|
|
return false
|
|
}
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
// IsSSN will validate the given string as a U.S. Social Security Number
|
|
func IsSSN(str string) bool {
|
|
if str == "" || len(str) != 11 {
|
|
return false
|
|
}
|
|
return rxSSN.MatchString(str)
|
|
}
|
|
|
|
// IsSemver check if string is valid semantic version
|
|
func IsSemver(str string) bool {
|
|
return rxSemver.MatchString(str)
|
|
}
|
|
|
|
// IsTime check if string is valid according to given format
|
|
func IsTime(str string, format string) bool {
|
|
_, err := time.Parse(format, str)
|
|
return err == nil
|
|
}
|
|
|
|
// IsRFC3339 check if string is valid timestamp value according to RFC3339
|
|
func IsRFC3339(str string) bool {
|
|
return IsTime(str, time.RFC3339)
|
|
}
|
|
|
|
// IsRFC3339WithoutZone check if string is valid timestamp value according to RFC3339 which excludes the timezone.
|
|
func IsRFC3339WithoutZone(str string) bool {
|
|
return IsTime(str, RF3339WithoutZone)
|
|
}
|
|
|
|
// IsISO4217 check if string is valid ISO currency code
|
|
func IsISO4217(str string) bool {
|
|
for _, currency := range ISO4217List {
|
|
if str == currency {
|
|
return true
|
|
}
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
// ByteLength check string's length
|
|
func ByteLength(str string, params ...string) bool {
|
|
if len(params) == 2 {
|
|
min, _ := ToInt(params[0])
|
|
max, _ := ToInt(params[1])
|
|
return len(str) >= int(min) && len(str) <= int(max)
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
// RuneLength check string's length
|
|
// Alias for StringLength
|
|
func RuneLength(str string, params ...string) bool {
|
|
return StringLength(str, params...)
|
|
}
|
|
|
|
// IsRsaPub check whether string is valid RSA key
|
|
// Alias for IsRsaPublicKey
|
|
func IsRsaPub(str string, params ...string) bool {
|
|
if len(params) == 1 {
|
|
len, _ := ToInt(params[0])
|
|
return IsRsaPublicKey(str, int(len))
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
// StringMatches checks if a string matches a given pattern.
|
|
func StringMatches(s string, params ...string) bool {
|
|
if len(params) == 1 {
|
|
pattern := params[0]
|
|
return Matches(s, pattern)
|
|
}
|
|
return false
|
|
}
|
|
|
|
// StringLength check string's length (including multi byte strings)
|
|
func StringLength(str string, params ...string) bool {
|
|
|
|
if len(params) == 2 {
|
|
strLength := utf8.RuneCountInString(str)
|
|
min, _ := ToInt(params[0])
|
|
max, _ := ToInt(params[1])
|
|
return strLength >= int(min) && strLength <= int(max)
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
// Range check string's length
|
|
func Range(str string, params ...string) bool {
|
|
if len(params) == 2 {
|
|
value, _ := ToFloat(str)
|
|
min, _ := ToFloat(params[0])
|
|
max, _ := ToFloat(params[1])
|
|
return InRange(value, min, max)
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
func isInRaw(str string, params ...string) bool {
|
|
if len(params) == 1 {
|
|
rawParams := params[0]
|
|
|
|
parsedParams := strings.Split(rawParams, "|")
|
|
|
|
return IsIn(str, parsedParams...)
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
// IsIn check if string str is a member of the set of strings params
|
|
func IsIn(str string, params ...string) bool {
|
|
for _, param := range params {
|
|
if str == param {
|
|
return true
|
|
}
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
func checkRequired(v reflect.Value, t reflect.StructField, options tagOptionsMap) (bool, error) {
|
|
if requiredOption, isRequired := options["required"]; isRequired {
|
|
if len(requiredOption) > 0 {
|
|
return false, Error{t.Name, fmt.Errorf(requiredOption), true, "required"}
|
|
}
|
|
return false, Error{t.Name, fmt.Errorf("non zero value required"), false, "required"}
|
|
} else if _, isOptional := options["optional"]; fieldsRequiredByDefault && !isOptional {
|
|
return false, Error{t.Name, fmt.Errorf("Missing required field"), false, "required"}
|
|
}
|
|
// not required and empty is valid
|
|
return true, nil
|
|
}
|
|
|
|
func typeCheck(v reflect.Value, t reflect.StructField, o reflect.Value, options tagOptionsMap) (isValid bool, resultErr error) {
|
|
if !v.IsValid() {
|
|
return false, nil
|
|
}
|
|
|
|
tag := t.Tag.Get(tagName)
|
|
|
|
// Check if the field should be ignored
|
|
switch tag {
|
|
case "":
|
|
if !fieldsRequiredByDefault {
|
|
return true, nil
|
|
}
|
|
return false, Error{t.Name, fmt.Errorf("All fields are required to at least have one validation defined"), false, "required"}
|
|
case "-":
|
|
return true, nil
|
|
}
|
|
|
|
isRootType := false
|
|
if options == nil {
|
|
isRootType = true
|
|
options = parseTagIntoMap(tag)
|
|
}
|
|
|
|
if isEmptyValue(v) {
|
|
// an empty value is not validated, check only required
|
|
return checkRequired(v, t, options)
|
|
}
|
|
|
|
var customTypeErrors Errors
|
|
for validatorName, customErrorMessage := range options {
|
|
if validatefunc, ok := CustomTypeTagMap.Get(validatorName); ok {
|
|
delete(options, validatorName)
|
|
|
|
if result := validatefunc(v.Interface(), o.Interface()); !result {
|
|
if len(customErrorMessage) > 0 {
|
|
customTypeErrors = append(customTypeErrors, Error{Name: t.Name, Err: fmt.Errorf(customErrorMessage), CustomErrorMessageExists: true, Validator: stripParams(validatorName)})
|
|
continue
|
|
}
|
|
customTypeErrors = append(customTypeErrors, Error{Name: t.Name, Err: fmt.Errorf("%s does not validate as %s", fmt.Sprint(v), validatorName), CustomErrorMessageExists: false, Validator: stripParams(validatorName)})
|
|
}
|
|
}
|
|
}
|
|
|
|
if len(customTypeErrors.Errors()) > 0 {
|
|
return false, customTypeErrors
|
|
}
|
|
|
|
if isRootType {
|
|
// Ensure that we've checked the value by all specified validators before report that the value is valid
|
|
defer func() {
|
|
delete(options, "optional")
|
|
delete(options, "required")
|
|
|
|
if isValid && resultErr == nil && len(options) != 0 {
|
|
for validator := range options {
|
|
isValid = false
|
|
resultErr = Error{t.Name, fmt.Errorf(
|
|
"The following validator is invalid or can't be applied to the field: %q", validator), false, stripParams(validator)}
|
|
return
|
|
}
|
|
}
|
|
}()
|
|
}
|
|
|
|
switch v.Kind() {
|
|
case reflect.Bool,
|
|
reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
|
|
reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr,
|
|
reflect.Float32, reflect.Float64,
|
|
reflect.String:
|
|
// for each tag option check the map of validator functions
|
|
for validatorSpec, customErrorMessage := range options {
|
|
var negate bool
|
|
validator := validatorSpec
|
|
customMsgExists := len(customErrorMessage) > 0
|
|
|
|
// Check whether the tag looks like '!something' or 'something'
|
|
if validator[0] == '!' {
|
|
validator = validator[1:]
|
|
negate = true
|
|
}
|
|
|
|
// Check for param validators
|
|
for key, value := range ParamTagRegexMap {
|
|
ps := value.FindStringSubmatch(validator)
|
|
if len(ps) == 0 {
|
|
continue
|
|
}
|
|
|
|
validatefunc, ok := ParamTagMap[key]
|
|
if !ok {
|
|
continue
|
|
}
|
|
|
|
delete(options, validatorSpec)
|
|
|
|
switch v.Kind() {
|
|
case reflect.String,
|
|
reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
|
|
reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64,
|
|
reflect.Float32, reflect.Float64:
|
|
|
|
field := fmt.Sprint(v) // make value into string, then validate with regex
|
|
if result := validatefunc(field, ps[1:]...); (!result && !negate) || (result && negate) {
|
|
if customMsgExists {
|
|
return false, Error{t.Name, fmt.Errorf(customErrorMessage), customMsgExists, stripParams(validatorSpec)}
|
|
}
|
|
if negate {
|
|
return false, Error{t.Name, fmt.Errorf("%s does validate as %s", field, validator), customMsgExists, stripParams(validatorSpec)}
|
|
}
|
|
return false, Error{t.Name, fmt.Errorf("%s does not validate as %s", field, validator), customMsgExists, stripParams(validatorSpec)}
|
|
}
|
|
default:
|
|
// type not yet supported, fail
|
|
return false, Error{t.Name, fmt.Errorf("Validator %s doesn't support kind %s", validator, v.Kind()), false, stripParams(validatorSpec)}
|
|
}
|
|
}
|
|
|
|
if validatefunc, ok := TagMap[validator]; ok {
|
|
delete(options, validatorSpec)
|
|
|
|
switch v.Kind() {
|
|
case reflect.String:
|
|
field := fmt.Sprint(v) // make value into string, then validate with regex
|
|
if result := validatefunc(field); !result && !negate || result && negate {
|
|
if customMsgExists {
|
|
return false, Error{t.Name, fmt.Errorf(customErrorMessage), customMsgExists, stripParams(validatorSpec)}
|
|
}
|
|
if negate {
|
|
return false, Error{t.Name, fmt.Errorf("%s does validate as %s", field, validator), customMsgExists, stripParams(validatorSpec)}
|
|
}
|
|
return false, Error{t.Name, fmt.Errorf("%s does not validate as %s", field, validator), customMsgExists, stripParams(validatorSpec)}
|
|
}
|
|
default:
|
|
//Not Yet Supported Types (Fail here!)
|
|
err := fmt.Errorf("Validator %s doesn't support kind %s for value %v", validator, v.Kind(), v)
|
|
return false, Error{t.Name, err, false, stripParams(validatorSpec)}
|
|
}
|
|
}
|
|
}
|
|
return true, nil
|
|
case reflect.Map:
|
|
if v.Type().Key().Kind() != reflect.String {
|
|
return false, &UnsupportedTypeError{v.Type()}
|
|
}
|
|
var sv stringValues
|
|
sv = v.MapKeys()
|
|
sort.Sort(sv)
|
|
result := true
|
|
for _, k := range sv {
|
|
var resultItem bool
|
|
var err error
|
|
if v.MapIndex(k).Kind() != reflect.Struct {
|
|
resultItem, err = typeCheck(v.MapIndex(k), t, o, options)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
} else {
|
|
resultItem, err = ValidateStruct(v.MapIndex(k).Interface())
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
}
|
|
result = result && resultItem
|
|
}
|
|
return result, nil
|
|
case reflect.Slice, reflect.Array:
|
|
result := true
|
|
for i := 0; i < v.Len(); i++ {
|
|
var resultItem bool
|
|
var err error
|
|
if v.Index(i).Kind() != reflect.Struct {
|
|
resultItem, err = typeCheck(v.Index(i), t, o, options)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
} else {
|
|
resultItem, err = ValidateStruct(v.Index(i).Interface())
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
}
|
|
result = result && resultItem
|
|
}
|
|
return result, nil
|
|
case reflect.Interface:
|
|
// If the value is an interface then encode its element
|
|
if v.IsNil() {
|
|
return true, nil
|
|
}
|
|
return ValidateStruct(v.Interface())
|
|
case reflect.Ptr:
|
|
// If the value is a pointer then check its element
|
|
if v.IsNil() {
|
|
return true, nil
|
|
}
|
|
return typeCheck(v.Elem(), t, o, options)
|
|
case reflect.Struct:
|
|
return ValidateStruct(v.Interface())
|
|
default:
|
|
return false, &UnsupportedTypeError{v.Type()}
|
|
}
|
|
}
|
|
|
|
func stripParams(validatorString string) string {
|
|
return paramsRegexp.ReplaceAllString(validatorString, "")
|
|
}
|
|
|
|
func isEmptyValue(v reflect.Value) bool {
|
|
switch v.Kind() {
|
|
case reflect.String, reflect.Array:
|
|
return v.Len() == 0
|
|
case reflect.Map, reflect.Slice:
|
|
return v.Len() == 0 || v.IsNil()
|
|
case reflect.Bool:
|
|
return !v.Bool()
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
return v.Int() == 0
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
|
|
return v.Uint() == 0
|
|
case reflect.Float32, reflect.Float64:
|
|
return v.Float() == 0
|
|
case reflect.Interface, reflect.Ptr:
|
|
return v.IsNil()
|
|
}
|
|
|
|
return reflect.DeepEqual(v.Interface(), reflect.Zero(v.Type()).Interface())
|
|
}
|
|
|
|
// ErrorByField returns error for specified field of the struct
|
|
// validated by ValidateStruct or empty string if there are no errors
|
|
// or this field doesn't exists or doesn't have any errors.
|
|
func ErrorByField(e error, field string) string {
|
|
if e == nil {
|
|
return ""
|
|
}
|
|
return ErrorsByField(e)[field]
|
|
}
|
|
|
|
// ErrorsByField returns map of errors of the struct validated
|
|
// by ValidateStruct or empty map if there are no errors.
|
|
func ErrorsByField(e error) map[string]string {
|
|
m := make(map[string]string)
|
|
if e == nil {
|
|
return m
|
|
}
|
|
// prototype for ValidateStruct
|
|
|
|
switch e.(type) {
|
|
case Error:
|
|
m[e.(Error).Name] = e.(Error).Err.Error()
|
|
case Errors:
|
|
for _, item := range e.(Errors).Errors() {
|
|
n := ErrorsByField(item)
|
|
for k, v := range n {
|
|
m[k] = v
|
|
}
|
|
}
|
|
}
|
|
|
|
return m
|
|
}
|
|
|
|
// Error returns string equivalent for reflect.Type
|
|
func (e *UnsupportedTypeError) Error() string {
|
|
return "validator: unsupported type: " + e.Type.String()
|
|
}
|
|
|
|
func (sv stringValues) Len() int { return len(sv) }
|
|
func (sv stringValues) Swap(i, j int) { sv[i], sv[j] = sv[j], sv[i] }
|
|
func (sv stringValues) Less(i, j int) bool { return sv.get(i) < sv.get(j) }
|
|
func (sv stringValues) get(i int) string { return sv[i].String() }
|