diff options
Diffstat (limited to 'vendor/github.com/go-macaron/binding/binding.go')
| -rw-r--r-- | vendor/github.com/go-macaron/binding/binding.go | 761 |
1 files changed, 0 insertions, 761 deletions
diff --git a/vendor/github.com/go-macaron/binding/binding.go b/vendor/github.com/go-macaron/binding/binding.go deleted file mode 100644 index 5d178b7e..00000000 --- a/vendor/github.com/go-macaron/binding/binding.go +++ /dev/null @@ -1,761 +0,0 @@ -// Copyright 2014 Martini Authors -// Copyright 2014 The Macaron Authors -// -// Licensed under the Apache License, Version 2.0 (the "License"): you may -// not use this file except in compliance with the License. You may obtain -// a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -// License for the specific language governing permissions and limitations -// under the License. - -// Package binding is a middleware that provides request data binding and validation for Macaron. -package binding - -import ( - "encoding/json" - "fmt" - "io" - "mime/multipart" - "net/http" - "net/url" - "reflect" - "regexp" - "strconv" - "strings" - "unicode/utf8" - - "github.com/Unknwon/com" - "gopkg.in/macaron.v1" -) - -const _VERSION = "0.6.0" - -func Version() string { - return _VERSION -} - -func bind(ctx *macaron.Context, obj interface{}, ifacePtr ...interface{}) { - contentType := ctx.Req.Header.Get("Content-Type") - if ctx.Req.Method == "POST" || ctx.Req.Method == "PUT" || len(contentType) > 0 { - switch { - case strings.Contains(contentType, "form-urlencoded"): - ctx.Invoke(Form(obj, ifacePtr...)) - case strings.Contains(contentType, "multipart/form-data"): - ctx.Invoke(MultipartForm(obj, ifacePtr...)) - case strings.Contains(contentType, "json"): - ctx.Invoke(Json(obj, ifacePtr...)) - default: - var errors Errors - if contentType == "" { - errors.Add([]string{}, ERR_CONTENT_TYPE, "Empty Content-Type") - } else { - errors.Add([]string{}, ERR_CONTENT_TYPE, "Unsupported Content-Type") - } - ctx.Map(errors) - ctx.Map(obj) // Map a fake struct so handler won't panic. - } - } else { - ctx.Invoke(Form(obj, ifacePtr...)) - } -} - -const ( - _JSON_CONTENT_TYPE = "application/json; charset=utf-8" - STATUS_UNPROCESSABLE_ENTITY = 422 -) - -// errorHandler simply counts the number of errors in the -// context and, if more than 0, writes a response with an -// error code and a JSON payload describing the errors. -// The response will have a JSON content-type. -// Middleware remaining on the stack will not even see the request -// if, by this point, there are any errors. -// This is a "default" handler, of sorts, and you are -// welcome to use your own instead. The Bind middleware -// invokes this automatically for convenience. -func errorHandler(errs Errors, rw http.ResponseWriter) { - if len(errs) > 0 { - rw.Header().Set("Content-Type", _JSON_CONTENT_TYPE) - if errs.Has(ERR_DESERIALIZATION) { - rw.WriteHeader(http.StatusBadRequest) - } else if errs.Has(ERR_CONTENT_TYPE) { - rw.WriteHeader(http.StatusUnsupportedMediaType) - } else { - rw.WriteHeader(STATUS_UNPROCESSABLE_ENTITY) - } - errOutput, _ := json.Marshal(errs) - rw.Write(errOutput) - return - } -} - -// Bind wraps up the functionality of the Form and Json middleware -// according to the Content-Type and verb of the request. -// A Content-Type is required for POST and PUT requests. -// Bind invokes the ErrorHandler middleware to bail out if errors -// occurred. If you want to perform your own error handling, use -// Form or Json middleware directly. An interface pointer can -// be added as a second argument in order to map the struct to -// a specific interface. -func Bind(obj interface{}, ifacePtr ...interface{}) macaron.Handler { - return func(ctx *macaron.Context) { - bind(ctx, obj, ifacePtr...) - if handler, ok := obj.(ErrorHandler); ok { - ctx.Invoke(handler.Error) - } else { - ctx.Invoke(errorHandler) - } - } -} - -// BindIgnErr will do the exactly same thing as Bind but without any -// error handling, which user has freedom to deal with them. -// This allows user take advantages of validation. -func BindIgnErr(obj interface{}, ifacePtr ...interface{}) macaron.Handler { - return func(ctx *macaron.Context) { - bind(ctx, obj, ifacePtr...) - } -} - -// Form is middleware to deserialize form-urlencoded data from the request. -// It gets data from the form-urlencoded body, if present, or from the -// query string. It uses the http.Request.ParseForm() method -// to perform deserialization, then reflection is used to map each field -// into the struct with the proper type. Structs with primitive slice types -// (bool, float, int, string) can support deserialization of repeated form -// keys, for example: key=val1&key=val2&key=val3 -// An interface pointer can be added as a second argument in order -// to map the struct to a specific interface. -func Form(formStruct interface{}, ifacePtr ...interface{}) macaron.Handler { - return func(ctx *macaron.Context) { - var errors Errors - - ensureNotPointer(formStruct) - formStruct := reflect.New(reflect.TypeOf(formStruct)) - parseErr := ctx.Req.ParseForm() - - // Format validation of the request body or the URL would add considerable overhead, - // and ParseForm does not complain when URL encoding is off. - // Because an empty request body or url can also mean absence of all needed values, - // it is not in all cases a bad request, so let's return 422. - if parseErr != nil { - errors.Add([]string{}, ERR_DESERIALIZATION, parseErr.Error()) - } - errors = mapForm(formStruct, ctx.Req.Form, nil, errors) - validateAndMap(formStruct, ctx, errors, ifacePtr...) - } -} - -// Maximum amount of memory to use when parsing a multipart form. -// Set this to whatever value you prefer; default is 10 MB. -var MaxMemory = int64(1024 * 1024 * 10) - -// MultipartForm works much like Form, except it can parse multipart forms -// and handle file uploads. Like the other deserialization middleware handlers, -// you can pass in an interface to make the interface available for injection -// into other handlers later. -func MultipartForm(formStruct interface{}, ifacePtr ...interface{}) macaron.Handler { - return func(ctx *macaron.Context) { - var errors Errors - ensureNotPointer(formStruct) - formStruct := reflect.New(reflect.TypeOf(formStruct)) - // This if check is necessary due to https://github.com/martini-contrib/csrf/issues/6 - if ctx.Req.MultipartForm == nil { - // Workaround for multipart forms returning nil instead of an error - // when content is not multipart; see https://code.google.com/p/go/issues/detail?id=6334 - if multipartReader, err := ctx.Req.MultipartReader(); err != nil { - errors.Add([]string{}, ERR_DESERIALIZATION, err.Error()) - } else { - form, parseErr := multipartReader.ReadForm(MaxMemory) - if parseErr != nil { - errors.Add([]string{}, ERR_DESERIALIZATION, parseErr.Error()) - } - - if ctx.Req.Form == nil { - ctx.Req.ParseForm() - } - for k, v := range form.Value { - ctx.Req.Form[k] = append(ctx.Req.Form[k], v...) - } - - ctx.Req.MultipartForm = form - } - } - errors = mapForm(formStruct, ctx.Req.MultipartForm.Value, ctx.Req.MultipartForm.File, errors) - validateAndMap(formStruct, ctx, errors, ifacePtr...) - } -} - -// Json is middleware to deserialize a JSON payload from the request -// into the struct that is passed in. The resulting struct is then -// validated, but no error handling is actually performed here. -// An interface pointer can be added as a second argument in order -// to map the struct to a specific interface. -func Json(jsonStruct interface{}, ifacePtr ...interface{}) macaron.Handler { - return func(ctx *macaron.Context) { - var errors Errors - ensureNotPointer(jsonStruct) - jsonStruct := reflect.New(reflect.TypeOf(jsonStruct)) - if ctx.Req.Request.Body != nil { - defer ctx.Req.Request.Body.Close() - err := json.NewDecoder(ctx.Req.Request.Body).Decode(jsonStruct.Interface()) - if err != nil && err != io.EOF { - errors.Add([]string{}, ERR_DESERIALIZATION, err.Error()) - } - } - validateAndMap(jsonStruct, ctx, errors, ifacePtr...) - } -} - -// RawValidate is same as Validate but does not require a HTTP context, -// and can be used independently just for validation. -// This function does not support Validator interface. -func RawValidate(obj interface{}) Errors { - var errs Errors - v := reflect.ValueOf(obj) - k := v.Kind() - if k == reflect.Interface || k == reflect.Ptr { - v = v.Elem() - k = v.Kind() - } - if k == reflect.Slice || k == reflect.Array { - for i := 0; i < v.Len(); i++ { - e := v.Index(i).Interface() - errs = validateStruct(errs, e) - } - } else { - errs = validateStruct(errs, obj) - } - return errs -} - -// Validate is middleware to enforce required fields. If the struct -// passed in implements Validator, then the user-defined Validate method -// is executed, and its errors are mapped to the context. This middleware -// performs no error handling: it merely detects errors and maps them. -func Validate(obj interface{}) macaron.Handler { - return func(ctx *macaron.Context) { - var errs Errors - v := reflect.ValueOf(obj) - k := v.Kind() - if k == reflect.Interface || k == reflect.Ptr { - v = v.Elem() - k = v.Kind() - } - if k == reflect.Slice || k == reflect.Array { - for i := 0; i < v.Len(); i++ { - e := v.Index(i).Interface() - errs = validateStruct(errs, e) - if validator, ok := e.(Validator); ok { - errs = validator.Validate(ctx, errs) - } - } - } else { - errs = validateStruct(errs, obj) - if validator, ok := obj.(Validator); ok { - errs = validator.Validate(ctx, errs) - } - } - ctx.Map(errs) - } -} - -var ( - AlphaDashPattern = regexp.MustCompile("[^\\d\\w-_]") - AlphaDashDotPattern = regexp.MustCompile("[^\\d\\w-_\\.]") - EmailPattern = regexp.MustCompile("[\\w!#$%&'*+/=?^_`{|}~-]+(?:\\.[\\w!#$%&'*+/=?^_`{|}~-]+)*@(?:[\\w](?:[\\w-]*[\\w])?\\.)+[a-zA-Z0-9](?:[\\w-]*[\\w])?") -) - -// Copied from github.com/asaskevich/govalidator. -const _MAX_URL_RUNE_COUNT = 2083 -const _MIN_URL_RUNE_COUNT = 3 - -var ( - urlSchemaRx = `((ftp|tcp|udp|wss?|https?):\/\/)` - urlUsernameRx = `(\S+(:\S*)?@)` - urlIPRx = `([1-9]\d?|1\d\d|2[01]\d|22[0-3])(\.(1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.([0-9]\d?|1\d\d|2[0-4]\d|25[0-4]))` - ipRx = `(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))` - urlSubdomainRx = `((www\.)|([a-zA-Z0-9]([-\.][-\._a-zA-Z0-9]+)*))` - urlPortRx = `(:(\d{1,5}))` - urlPathRx = `((\/|\?|#)[^\s]*)` - URLPattern = regexp.MustCompile(`^` + urlSchemaRx + `?` + urlUsernameRx + `?` + `((` + urlIPRx + `|(\[` + ipRx + `\])|(([a-zA-Z0-9]([a-zA-Z0-9-_]+)?[a-zA-Z0-9]([-\.][a-zA-Z0-9]+)*)|(` + urlSubdomainRx + `?))?(([a-zA-Z\x{00a1}-\x{ffff}0-9]+-?-?)*[a-zA-Z\x{00a1}-\x{ffff}0-9]+)(?:\.([a-zA-Z\x{00a1}-\x{ffff}]{1,}))?))\.?` + urlPortRx + `?` + urlPathRx + `?$`) -) - -// IsURL check if the string is an URL. -func isURL(str string) bool { - if str == "" || utf8.RuneCountInString(str) >= _MAX_URL_RUNE_COUNT || len(str) <= _MIN_URL_RUNE_COUNT || strings.HasPrefix(str, ".") { - return false - } - u, err := url.Parse(str) - if err != nil { - return false - } - if strings.HasPrefix(u.Host, ".") { - return false - } - if u.Host == "" && (u.Path != "" && !strings.Contains(u.Path, ".")) { - return false - } - return URLPattern.MatchString(str) - -} - -type ( - // Rule represents a validation rule. - Rule struct { - // IsMatch checks if rule matches. - IsMatch func(string) bool - // IsValid applies validation rule to condition. - IsValid func(Errors, string, interface{}) (bool, Errors) - } - - // ParamRule does same thing as Rule but passes rule itself to IsValid method. - ParamRule struct { - // IsMatch checks if rule matches. - IsMatch func(string) bool - // IsValid applies validation rule to condition. - IsValid func(Errors, string, string, interface{}) (bool, Errors) - } - - // RuleMapper and ParamRuleMapper represent validation rule mappers, - // it allwos users to add custom validation rules. - RuleMapper []*Rule - ParamRuleMapper []*ParamRule -) - -var ruleMapper RuleMapper -var paramRuleMapper ParamRuleMapper - -// AddRule adds new validation rule. -func AddRule(r *Rule) { - ruleMapper = append(ruleMapper, r) -} - -// AddParamRule adds new validation rule. -func AddParamRule(r *ParamRule) { - paramRuleMapper = append(paramRuleMapper, r) -} - -func in(fieldValue interface{}, arr string) bool { - val := fmt.Sprintf("%v", fieldValue) - vals := strings.Split(arr, ",") - isIn := false - for _, v := range vals { - if v == val { - isIn = true - break - } - } - return isIn -} - -func parseFormName(raw, actual string) string { - if len(actual) > 0 { - return actual - } - return nameMapper(raw) -} - -// Performs required field checking on a struct -func validateStruct(errors Errors, obj interface{}) Errors { - typ := reflect.TypeOf(obj) - val := reflect.ValueOf(obj) - - if typ.Kind() == reflect.Ptr { - typ = typ.Elem() - val = val.Elem() - } - - for i := 0; i < typ.NumField(); i++ { - field := typ.Field(i) - - // Allow ignored fields in the struct - if field.Tag.Get("form") == "-" || !val.Field(i).CanInterface() { - continue - } - - fieldVal := val.Field(i) - fieldValue := fieldVal.Interface() - zero := reflect.Zero(field.Type).Interface() - - // Validate nested and embedded structs (if pointer, only do so if not nil) - if field.Type.Kind() == reflect.Struct || - (field.Type.Kind() == reflect.Ptr && !reflect.DeepEqual(zero, fieldValue) && - field.Type.Elem().Kind() == reflect.Struct) { - errors = validateStruct(errors, fieldValue) - } - errors = validateField(errors, zero, field, fieldVal, fieldValue) - } - return errors -} - -func validateField(errors Errors, zero interface{}, field reflect.StructField, fieldVal reflect.Value, fieldValue interface{}) Errors { - if fieldVal.Kind() == reflect.Slice { - for i := 0; i < fieldVal.Len(); i++ { - sliceVal := fieldVal.Index(i) - if sliceVal.Kind() == reflect.Ptr { - sliceVal = sliceVal.Elem() - } - - sliceValue := sliceVal.Interface() - zero := reflect.Zero(sliceVal.Type()).Interface() - if sliceVal.Kind() == reflect.Struct || - (sliceVal.Kind() == reflect.Ptr && !reflect.DeepEqual(zero, sliceValue) && - sliceVal.Elem().Kind() == reflect.Struct) { - errors = validateStruct(errors, sliceValue) - } - /* Apply validation rules to each item in a slice. ISSUE #3 - else { - errors = validateField(errors, zero, field, sliceVal, sliceValue) - }*/ - } - } - -VALIDATE_RULES: - for _, rule := range strings.Split(field.Tag.Get("binding"), ";") { - if len(rule) == 0 { - continue - } - - switch { - case rule == "OmitEmpty": - if reflect.DeepEqual(zero, fieldValue) { - break VALIDATE_RULES - } - case rule == "Required": - v := reflect.ValueOf(fieldValue) - if v.Kind() == reflect.Slice { - if v.Len() == 0 { - errors.Add([]string{field.Name}, ERR_REQUIRED, "Required") - break VALIDATE_RULES - } - - continue - } - - if reflect.DeepEqual(zero, fieldValue) { - errors.Add([]string{field.Name}, ERR_REQUIRED, "Required") - break VALIDATE_RULES - } - case rule == "AlphaDash": - if AlphaDashPattern.MatchString(fmt.Sprintf("%v", fieldValue)) { - errors.Add([]string{field.Name}, ERR_ALPHA_DASH, "AlphaDash") - break VALIDATE_RULES - } - case rule == "AlphaDashDot": - if AlphaDashDotPattern.MatchString(fmt.Sprintf("%v", fieldValue)) { - errors.Add([]string{field.Name}, ERR_ALPHA_DASH_DOT, "AlphaDashDot") - break VALIDATE_RULES - } - case strings.HasPrefix(rule, "Size("): - size, _ := strconv.Atoi(rule[5 : len(rule)-1]) - if str, ok := fieldValue.(string); ok && utf8.RuneCountInString(str) != size { - errors.Add([]string{field.Name}, ERR_SIZE, "Size") - break VALIDATE_RULES - } - v := reflect.ValueOf(fieldValue) - if v.Kind() == reflect.Slice && v.Len() != size { - errors.Add([]string{field.Name}, ERR_SIZE, "Size") - break VALIDATE_RULES - } - case strings.HasPrefix(rule, "MinSize("): - min, _ := strconv.Atoi(rule[8 : len(rule)-1]) - if str, ok := fieldValue.(string); ok && utf8.RuneCountInString(str) < min { - errors.Add([]string{field.Name}, ERR_MIN_SIZE, "MinSize") - break VALIDATE_RULES - } - v := reflect.ValueOf(fieldValue) - if v.Kind() == reflect.Slice && v.Len() < min { - errors.Add([]string{field.Name}, ERR_MIN_SIZE, "MinSize") - break VALIDATE_RULES - } - case strings.HasPrefix(rule, "MaxSize("): - max, _ := strconv.Atoi(rule[8 : len(rule)-1]) - if str, ok := fieldValue.(string); ok && utf8.RuneCountInString(str) > max { - errors.Add([]string{field.Name}, ERR_MAX_SIZE, "MaxSize") - break VALIDATE_RULES - } - v := reflect.ValueOf(fieldValue) - if v.Kind() == reflect.Slice && v.Len() > max { - errors.Add([]string{field.Name}, ERR_MAX_SIZE, "MaxSize") - break VALIDATE_RULES - } - case strings.HasPrefix(rule, "Range("): - nums := strings.Split(rule[6:len(rule)-1], ",") - if len(nums) != 2 { - break VALIDATE_RULES - } - val := com.StrTo(fmt.Sprintf("%v", fieldValue)).MustInt() - if val < com.StrTo(nums[0]).MustInt() || val > com.StrTo(nums[1]).MustInt() { - errors.Add([]string{field.Name}, ERR_RANGE, "Range") - break VALIDATE_RULES - } - case rule == "Email": - if !EmailPattern.MatchString(fmt.Sprintf("%v", fieldValue)) { - errors.Add([]string{field.Name}, ERR_EMAIL, "Email") - break VALIDATE_RULES - } - case rule == "Url": - str := fmt.Sprintf("%v", fieldValue) - if len(str) == 0 { - continue - } else if !isURL(str) { - errors.Add([]string{field.Name}, ERR_URL, "Url") - break VALIDATE_RULES - } - case strings.HasPrefix(rule, "In("): - if !in(fieldValue, rule[3:len(rule)-1]) { - errors.Add([]string{field.Name}, ERR_IN, "In") - break VALIDATE_RULES - } - case strings.HasPrefix(rule, "NotIn("): - if in(fieldValue, rule[6:len(rule)-1]) { - errors.Add([]string{field.Name}, ERR_NOT_INT, "NotIn") - break VALIDATE_RULES - } - case strings.HasPrefix(rule, "Include("): - if !strings.Contains(fmt.Sprintf("%v", fieldValue), rule[8:len(rule)-1]) { - errors.Add([]string{field.Name}, ERR_INCLUDE, "Include") - break VALIDATE_RULES - } - case strings.HasPrefix(rule, "Exclude("): - if strings.Contains(fmt.Sprintf("%v", fieldValue), rule[8:len(rule)-1]) { - errors.Add([]string{field.Name}, ERR_EXCLUDE, "Exclude") - break VALIDATE_RULES - } - case strings.HasPrefix(rule, "Default("): - if reflect.DeepEqual(zero, fieldValue) { - if fieldVal.CanAddr() { - errors = setWithProperType(field.Type.Kind(), rule[8:len(rule)-1], fieldVal, field.Tag.Get("form"), errors) - } else { - errors.Add([]string{field.Name}, ERR_EXCLUDE, "Default") - break VALIDATE_RULES - } - } - default: - // Apply custom validation rules - var isValid bool - for i := range ruleMapper { - if ruleMapper[i].IsMatch(rule) { - isValid, errors = ruleMapper[i].IsValid(errors, field.Name, fieldValue) - if !isValid { - break VALIDATE_RULES - } - } - } - for i := range paramRuleMapper { - if paramRuleMapper[i].IsMatch(rule) { - isValid, errors = paramRuleMapper[i].IsValid(errors, rule, field.Name, fieldValue) - if !isValid { - break VALIDATE_RULES - } - } - } - } - } - return errors -} - -// NameMapper represents a form tag name mapper. -type NameMapper func(string) string - -var ( - nameMapper = func(field string) string { - newstr := make([]rune, 0, len(field)) - for i, chr := range field { - if isUpper := 'A' <= chr && chr <= 'Z'; isUpper { - if i > 0 { - newstr = append(newstr, '_') - } - chr -= ('A' - 'a') - } - newstr = append(newstr, chr) - } - return string(newstr) - } -) - -// SetNameMapper sets name mapper. -func SetNameMapper(nm NameMapper) { - nameMapper = nm -} - -// Takes values from the form data and puts them into a struct -func mapForm(formStruct reflect.Value, form map[string][]string, - formfile map[string][]*multipart.FileHeader, errors Errors) Errors { - - if formStruct.Kind() == reflect.Ptr { - formStruct = formStruct.Elem() - } - typ := formStruct.Type() - - for i := 0; i < typ.NumField(); i++ { - typeField := typ.Field(i) - structField := formStruct.Field(i) - - if typeField.Type.Kind() == reflect.Ptr && typeField.Anonymous { - structField.Set(reflect.New(typeField.Type.Elem())) - errors = mapForm(structField.Elem(), form, formfile, errors) - if reflect.DeepEqual(structField.Elem().Interface(), reflect.Zero(structField.Elem().Type()).Interface()) { - structField.Set(reflect.Zero(structField.Type())) - } - } else if typeField.Type.Kind() == reflect.Struct { - errors = mapForm(structField, form, formfile, errors) - } - - inputFieldName := parseFormName(typeField.Name, typeField.Tag.Get("form")) - if len(inputFieldName) == 0 || !structField.CanSet() { - continue - } - - inputValue, exists := form[inputFieldName] - if exists { - numElems := len(inputValue) - if structField.Kind() == reflect.Slice && numElems > 0 { - sliceOf := structField.Type().Elem().Kind() - slice := reflect.MakeSlice(structField.Type(), numElems, numElems) - for i := 0; i < numElems; i++ { - errors = setWithProperType(sliceOf, inputValue[i], slice.Index(i), inputFieldName, errors) - } - formStruct.Field(i).Set(slice) - } else { - errors = setWithProperType(typeField.Type.Kind(), inputValue[0], structField, inputFieldName, errors) - } - continue - } - - inputFile, exists := formfile[inputFieldName] - if !exists { - continue - } - fhType := reflect.TypeOf((*multipart.FileHeader)(nil)) - numElems := len(inputFile) - if structField.Kind() == reflect.Slice && numElems > 0 && structField.Type().Elem() == fhType { - slice := reflect.MakeSlice(structField.Type(), numElems, numElems) - for i := 0; i < numElems; i++ { - slice.Index(i).Set(reflect.ValueOf(inputFile[i])) - } - structField.Set(slice) - } else if structField.Type() == fhType { - structField.Set(reflect.ValueOf(inputFile[0])) - } - } - return errors -} - -// This sets the value in a struct of an indeterminate type to the -// matching value from the request (via Form middleware) in the -// same type, so that not all deserialized values have to be strings. -// Supported types are string, int, float, and bool. -func setWithProperType(valueKind reflect.Kind, val string, structField reflect.Value, nameInTag string, errors Errors) Errors { - switch valueKind { - case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: - if val == "" { - val = "0" - } - intVal, err := strconv.ParseInt(val, 10, 64) - if err != nil { - errors.Add([]string{nameInTag}, ERR_INTERGER_TYPE, "Value could not be parsed as integer") - } else { - structField.SetInt(intVal) - } - case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64: - if val == "" { - val = "0" - } - uintVal, err := strconv.ParseUint(val, 10, 64) - if err != nil { - errors.Add([]string{nameInTag}, ERR_INTERGER_TYPE, "Value could not be parsed as unsigned integer") - } else { - structField.SetUint(uintVal) - } - case reflect.Bool: - if val == "on" { - structField.SetBool(true) - break - } - - if val == "" { - val = "false" - } - boolVal, err := strconv.ParseBool(val) - if err != nil { - errors.Add([]string{nameInTag}, ERR_BOOLEAN_TYPE, "Value could not be parsed as boolean") - } else if boolVal { - structField.SetBool(true) - } - case reflect.Float32: - if val == "" { - val = "0.0" - } - floatVal, err := strconv.ParseFloat(val, 32) - if err != nil { - errors.Add([]string{nameInTag}, ERR_FLOAT_TYPE, "Value could not be parsed as 32-bit float") - } else { - structField.SetFloat(floatVal) - } - case reflect.Float64: - if val == "" { - val = "0.0" - } - floatVal, err := strconv.ParseFloat(val, 64) - if err != nil { - errors.Add([]string{nameInTag}, ERR_FLOAT_TYPE, "Value could not be parsed as 64-bit float") - } else { - structField.SetFloat(floatVal) - } - case reflect.String: - structField.SetString(val) - } - return errors -} - -// Don't pass in pointers to bind to. Can lead to bugs. -func ensureNotPointer(obj interface{}) { - if reflect.TypeOf(obj).Kind() == reflect.Ptr { - panic("Pointers are not accepted as binding models") - } -} - -// Performs validation and combines errors from validation -// with errors from deserialization, then maps both the -// resulting struct and the errors to the context. -func validateAndMap(obj reflect.Value, ctx *macaron.Context, errors Errors, ifacePtr ...interface{}) { - ctx.Invoke(Validate(obj.Interface())) - errors = append(errors, getErrors(ctx)...) - ctx.Map(errors) - ctx.Map(obj.Elem().Interface()) - if len(ifacePtr) > 0 { - ctx.MapTo(obj.Elem().Interface(), ifacePtr[0]) - } -} - -// getErrors simply gets the errors from the context (it's kind of a chore) -func getErrors(ctx *macaron.Context) Errors { - return ctx.GetVal(reflect.TypeOf(Errors{})).Interface().(Errors) -} - -type ( - // ErrorHandler is the interface that has custom error handling process. - ErrorHandler interface { - // Error handles validation errors with custom process. - Error(*macaron.Context, Errors) - } - - // Validator is the interface that handles some rudimentary - // request validation logic so your application doesn't have to. - Validator interface { - // Validate validates that the request is OK. It is recommended - // that validation be limited to checking values for syntax and - // semantics, enough to know that you can make sense of the request - // in your application. For example, you might verify that a credit - // card number matches a valid pattern, but you probably wouldn't - // perform an actual credit card authorization here. - Validate(*macaron.Context, Errors) Errors - } -) |