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minio/pkg/policy/condition/stringequalsignorecasefunc.go

160 lines
5.0 KiB

/*
* MinIO Cloud Storage, (C) 2018 MinIO, Inc.
*
* 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 condition
import (
"fmt"
"net/http"
"sort"
"strings"
"github.com/minio/minio-go/pkg/set"
)
func toStringEqualsIgnoreCaseFuncString(n name, key Key, values set.StringSet) string {
valueStrings := values.ToSlice()
sort.Strings(valueStrings)
return fmt.Sprintf("%v:%v:%v", n, key, valueStrings)
}
// stringEqualsIgnoreCaseFunc - String equals function. It checks whether value by Key in given
// values map is in condition values.
// For example,
// - if values = ["mybucket/foo"], at evaluate() it returns whether string
// in value map for Key is in values.
type stringEqualsIgnoreCaseFunc struct {
k Key
values set.StringSet
}
// evaluate() - evaluates to check whether value by Key in given values is in
// condition values, ignores case.
func (f stringEqualsIgnoreCaseFunc) evaluate(values map[string][]string) bool {
requestValue, ok := values[http.CanonicalHeaderKey(f.k.Name())]
if !ok {
requestValue = values[f.k.Name()]
}
fvalues := f.values.ApplyFunc(substFuncFromValues(values))
for _, v := range requestValue {
if !fvalues.FuncMatch(strings.EqualFold, v).IsEmpty() {
return true
}
}
return false
}
// key() - returns condition key which is used by this condition function.
func (f stringEqualsIgnoreCaseFunc) key() Key {
return f.k
}
// name() - returns "StringEqualsIgnoreCase" condition name.
func (f stringEqualsIgnoreCaseFunc) name() name {
return stringEqualsIgnoreCase
}
func (f stringEqualsIgnoreCaseFunc) String() string {
return toStringEqualsIgnoreCaseFuncString(stringEqualsIgnoreCase, f.k, f.values)
}
// toMap - returns map representation of this function.
func (f stringEqualsIgnoreCaseFunc) toMap() map[Key]ValueSet {
if !f.k.IsValid() {
return nil
}
values := NewValueSet()
for _, value := range f.values.ToSlice() {
values.Add(NewStringValue(value))
}
return map[Key]ValueSet{
f.k: values,
}
}
// stringNotEqualsIgnoreCaseFunc - String not equals function. It checks whether value by Key in
// given values is NOT in condition values.
// For example,
// - if values = ["mybucket/foo"], at evaluate() it returns whether string
// in value map for Key is NOT in values.
type stringNotEqualsIgnoreCaseFunc struct {
stringEqualsIgnoreCaseFunc
}
// evaluate() - evaluates to check whether value by Key in given values is NOT in
// condition values.
func (f stringNotEqualsIgnoreCaseFunc) evaluate(values map[string][]string) bool {
return !f.stringEqualsIgnoreCaseFunc.evaluate(values)
}
// name() - returns "StringNotEqualsIgnoreCase" condition name.
func (f stringNotEqualsIgnoreCaseFunc) name() name {
return stringNotEqualsIgnoreCase
}
func (f stringNotEqualsIgnoreCaseFunc) String() string {
return toStringEqualsIgnoreCaseFuncString(stringNotEqualsIgnoreCase, f.stringEqualsIgnoreCaseFunc.k, f.stringEqualsIgnoreCaseFunc.values)
}
func validateStringEqualsIgnoreCaseValues(n name, key Key, values set.StringSet) error {
return validateStringEqualsValues(n, key, values)
}
// newStringEqualsIgnoreCaseFunc - returns new StringEqualsIgnoreCase function.
func newStringEqualsIgnoreCaseFunc(key Key, values ValueSet) (Function, error) {
valueStrings, err := valuesToStringSlice(stringEqualsIgnoreCase, values)
if err != nil {
return nil, err
}
return NewStringEqualsIgnoreCaseFunc(key, valueStrings...)
}
// NewStringEqualsIgnoreCaseFunc - returns new StringEqualsIgnoreCase function.
func NewStringEqualsIgnoreCaseFunc(key Key, values ...string) (Function, error) {
sset := set.CreateStringSet(values...)
if err := validateStringEqualsIgnoreCaseValues(stringEqualsIgnoreCase, key, sset); err != nil {
return nil, err
}
return &stringEqualsIgnoreCaseFunc{key, sset}, nil
}
// newStringNotEqualsIgnoreCaseFunc - returns new StringNotEqualsIgnoreCase function.
func newStringNotEqualsIgnoreCaseFunc(key Key, values ValueSet) (Function, error) {
valueStrings, err := valuesToStringSlice(stringNotEqualsIgnoreCase, values)
if err != nil {
return nil, err
}
return NewStringNotEqualsIgnoreCaseFunc(key, valueStrings...)
}
// NewStringNotEqualsIgnoreCaseFunc - returns new StringNotEqualsIgnoreCase function.
func NewStringNotEqualsIgnoreCaseFunc(key Key, values ...string) (Function, error) {
sset := set.CreateStringSet(values...)
if err := validateStringEqualsIgnoreCaseValues(stringNotEqualsIgnoreCase, key, sset); err != nil {
return nil, err
}
return &stringNotEqualsIgnoreCaseFunc{stringEqualsIgnoreCaseFunc{key, sset}}, nil
}