2020-04-19 05:01:09 +05:30
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package http
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import (
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"errors"
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"fmt"
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"net/http"
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"regexp"
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"strconv"
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"github.com/gorilla/mux"
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"github.com/thedevsaddam/govalidator"
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"github.com/elyby/chrly/model"
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)
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2023-12-12 06:05:08 +05:30
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// noinspection GoSnakeCaseUsage
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2020-04-19 05:01:09 +05:30
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const UUID_ANY = "^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$"
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var regexUuidAny = regexp.MustCompile(UUID_ANY)
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func init() {
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govalidator.AddCustomRule("skinUploadingNotAvailable", func(field string, rule string, message string, value interface{}) error {
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if message == "" {
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message = "Skin uploading is temporary unavailable"
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}
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return errors.New(message)
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})
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// Add ability to validate any possible uuid form
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govalidator.AddCustomRule("uuid_any", func(field string, rule string, message string, value interface{}) error {
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str := value.(string)
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if !regexUuidAny.MatchString(str) {
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if message == "" {
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message = fmt.Sprintf("The %s field must contain valid UUID", field)
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}
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return errors.New(message)
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}
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return nil
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})
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}
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type Api struct {
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SkinsRepo SkinsRepository
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}
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func (ctx *Api) Handler() *mux.Router {
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router := mux.NewRouter().StrictSlash(true)
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router.HandleFunc("/skins", ctx.postSkinHandler).Methods(http.MethodPost)
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router.HandleFunc("/skins/id:{id:[0-9]+}", ctx.deleteSkinByUserIdHandler).Methods(http.MethodDelete)
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router.HandleFunc("/skins/{username}", ctx.deleteSkinByUsernameHandler).Methods(http.MethodDelete)
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return router
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}
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func (ctx *Api) postSkinHandler(resp http.ResponseWriter, req *http.Request) {
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validationErrors := validatePostSkinRequest(req)
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if validationErrors != nil {
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apiBadRequest(resp, validationErrors)
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return
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}
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identityId, _ := strconv.Atoi(req.Form.Get("identityId"))
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username := req.Form.Get("username")
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record, err := ctx.findIdentityOrCleanup(identityId, username)
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if err != nil {
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2021-02-26 07:15:45 +05:30
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panic(err)
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2020-04-19 05:01:09 +05:30
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}
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2020-04-20 17:46:15 +05:30
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if record == nil {
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record = &model.Skin{
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UserId: identityId,
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Username: username,
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}
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}
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2020-04-19 05:01:09 +05:30
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skinId, _ := strconv.Atoi(req.Form.Get("skinId"))
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is18, _ := strconv.ParseBool(req.Form.Get("is1_8"))
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isSlim, _ := strconv.ParseBool(req.Form.Get("isSlim"))
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record.Uuid = req.Form.Get("uuid")
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record.SkinId = skinId
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record.Is1_8 = is18
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record.IsSlim = isSlim
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record.Url = req.Form.Get("url")
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record.MojangTextures = req.Form.Get("mojangTextures")
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record.MojangSignature = req.Form.Get("mojangSignature")
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2020-04-21 00:48:27 +05:30
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err = ctx.SkinsRepo.SaveSkin(record)
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2020-04-19 05:01:09 +05:30
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if err != nil {
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2021-02-26 07:15:45 +05:30
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panic(err)
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2020-04-19 05:01:09 +05:30
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}
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resp.WriteHeader(http.StatusCreated)
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}
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func (ctx *Api) deleteSkinByUserIdHandler(resp http.ResponseWriter, req *http.Request) {
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id, _ := strconv.Atoi(mux.Vars(req)["id"])
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2020-04-21 00:48:27 +05:30
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skin, err := ctx.SkinsRepo.FindSkinByUserId(id)
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2020-04-19 05:01:09 +05:30
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ctx.deleteSkin(skin, err, resp)
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}
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func (ctx *Api) deleteSkinByUsernameHandler(resp http.ResponseWriter, req *http.Request) {
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username := mux.Vars(req)["username"]
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2020-04-21 00:48:27 +05:30
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skin, err := ctx.SkinsRepo.FindSkinByUsername(username)
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2020-04-19 05:01:09 +05:30
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ctx.deleteSkin(skin, err, resp)
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}
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func (ctx *Api) deleteSkin(skin *model.Skin, err error, resp http.ResponseWriter) {
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if err != nil {
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2021-02-26 07:15:45 +05:30
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panic(err)
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2020-04-20 17:46:15 +05:30
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}
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2020-04-19 05:01:09 +05:30
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2020-04-20 17:46:15 +05:30
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if skin == nil {
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apiNotFound(resp, "Cannot find record for the requested identifier")
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2020-04-19 05:01:09 +05:30
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return
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}
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2020-04-21 00:48:27 +05:30
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err = ctx.SkinsRepo.RemoveSkinByUserId(skin.UserId)
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2020-04-19 05:01:09 +05:30
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if err != nil {
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2021-02-26 07:15:45 +05:30
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panic(err)
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2020-04-19 05:01:09 +05:30
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}
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resp.WriteHeader(http.StatusNoContent)
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}
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func (ctx *Api) findIdentityOrCleanup(identityId int, username string) (*model.Skin, error) {
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2020-04-21 00:48:27 +05:30
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record, err := ctx.SkinsRepo.FindSkinByUserId(identityId)
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2020-04-19 05:01:09 +05:30
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if err != nil {
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2020-04-20 17:46:15 +05:30
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return nil, err
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}
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2020-04-19 05:01:09 +05:30
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2020-04-20 17:46:15 +05:30
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if record != nil {
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// The username may have changed in the external database,
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// so we need to remove the old association
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if record.Username != username {
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2020-04-21 00:48:27 +05:30
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_ = ctx.SkinsRepo.RemoveSkinByUserId(identityId)
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2020-04-20 17:46:15 +05:30
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record.Username = username
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2020-04-19 05:01:09 +05:30
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}
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2020-04-20 17:46:15 +05:30
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return record, nil
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}
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// If the requested id was not found, then username was reassigned to another user
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// who has not uploaded his data to Chrly yet
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2020-04-21 00:48:27 +05:30
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record, err = ctx.SkinsRepo.FindSkinByUsername(username)
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2020-04-20 17:46:15 +05:30
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if err != nil {
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return nil, err
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}
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// If the target username does exist, clear it as it will be reassigned to the new user
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if record != nil {
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2020-04-21 00:48:27 +05:30
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_ = ctx.SkinsRepo.RemoveSkinByUsername(username)
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2020-04-20 17:46:15 +05:30
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record.UserId = identityId
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return record, nil
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2020-04-19 05:01:09 +05:30
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}
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2020-04-20 17:46:15 +05:30
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return nil, nil
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2020-04-19 05:01:09 +05:30
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}
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func validatePostSkinRequest(request *http.Request) map[string][]string {
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const maxMultipartMemory int64 = 32 << 20
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const oneOfSkinOrUrlMessage = "One of url or skin should be provided, but not both"
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_ = request.ParseMultipartForm(maxMultipartMemory)
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validationRules := govalidator.MapData{
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"identityId": {"required", "numeric", "min:1"},
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"username": {"required"},
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"uuid": {"required", "uuid_any"},
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"skinId": {"required", "numeric", "min:1"},
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"url": {"url"},
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"file:skin": {"ext:png", "size:24576", "mime:image/png"},
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"is1_8": {"bool"},
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"isSlim": {"bool"},
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}
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shouldAppendSkinRequiredError := false
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url := request.Form.Get("url")
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_, _, skinErr := request.FormFile("skin")
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if (url != "" && skinErr == nil) || (url == "" && skinErr != nil) {
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shouldAppendSkinRequiredError = true
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} else if skinErr == nil {
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validationRules["file:skin"] = append(validationRules["file:skin"], "skinUploadingNotAvailable")
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} else if url != "" {
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validationRules["is1_8"] = append(validationRules["is1_8"], "required")
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validationRules["isSlim"] = append(validationRules["isSlim"], "required")
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}
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mojangTextures := request.Form.Get("mojangTextures")
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if mojangTextures != "" {
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validationRules["mojangSignature"] = []string{"required"}
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}
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validator := govalidator.New(govalidator.Options{
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Request: request,
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Rules: validationRules,
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RequiredDefault: false,
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FormSize: maxMultipartMemory,
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})
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validationResults := validator.Validate()
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if shouldAppendSkinRequiredError {
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validationResults["url"] = append(validationResults["url"], oneOfSkinOrUrlMessage)
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validationResults["skin"] = append(validationResults["skin"], oneOfSkinOrUrlMessage)
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}
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if len(validationResults) != 0 {
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return validationResults
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}
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return nil
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}
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