forked from TrueCloudLab/frostfs-s3-gw
175 lines
4.8 KiB
Go
175 lines
4.8 KiB
Go
|
/*
|
||
|
* 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"
|
||
|
|
||
|
"github.com/minio/minio-go/v6/pkg/s3utils"
|
||
|
"github.com/minio/minio-go/v6/pkg/set"
|
||
|
"github.com/minio/minio/pkg/wildcard"
|
||
|
)
|
||
|
|
||
|
func toStringLikeFuncString(n name, key Key, values set.StringSet) string {
|
||
|
valueStrings := values.ToSlice()
|
||
|
sort.Strings(valueStrings)
|
||
|
|
||
|
return fmt.Sprintf("%v:%v:%v", n, key, valueStrings)
|
||
|
}
|
||
|
|
||
|
// stringLikeFunc - String like function. It checks whether value by Key in given
|
||
|
// values map is widcard matching in condition values.
|
||
|
// For example,
|
||
|
// - if values = ["mybucket/foo*"], at evaluate() it returns whether string
|
||
|
// in value map for Key is wildcard matching in values.
|
||
|
type stringLikeFunc struct {
|
||
|
k Key
|
||
|
values set.StringSet
|
||
|
}
|
||
|
|
||
|
// evaluate() - evaluates to check whether value by Key in given values is wildcard
|
||
|
// matching in condition values.
|
||
|
func (f stringLikeFunc) 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(wildcard.Match, v).IsEmpty() {
|
||
|
return true
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return false
|
||
|
}
|
||
|
|
||
|
// key() - returns condition key which is used by this condition function.
|
||
|
func (f stringLikeFunc) key() Key {
|
||
|
return f.k
|
||
|
}
|
||
|
|
||
|
// name() - returns "StringLike" function name.
|
||
|
func (f stringLikeFunc) name() name {
|
||
|
return stringLike
|
||
|
}
|
||
|
|
||
|
func (f stringLikeFunc) String() string {
|
||
|
return toStringLikeFuncString(stringLike, f.k, f.values)
|
||
|
}
|
||
|
|
||
|
// toMap - returns map representation of this function.
|
||
|
func (f stringLikeFunc) 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,
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// stringNotLikeFunc - String not like function. It checks whether value by Key in given
|
||
|
// values map is NOT widcard matching in condition values.
|
||
|
// For example,
|
||
|
// - if values = ["mybucket/foo*"], at evaluate() it returns whether string
|
||
|
// in value map for Key is NOT wildcard matching in values.
|
||
|
type stringNotLikeFunc struct {
|
||
|
stringLikeFunc
|
||
|
}
|
||
|
|
||
|
// evaluate() - evaluates to check whether value by Key in given values is NOT wildcard
|
||
|
// matching in condition values.
|
||
|
func (f stringNotLikeFunc) evaluate(values map[string][]string) bool {
|
||
|
return !f.stringLikeFunc.evaluate(values)
|
||
|
}
|
||
|
|
||
|
// name() - returns "StringNotLike" function name.
|
||
|
func (f stringNotLikeFunc) name() name {
|
||
|
return stringNotLike
|
||
|
}
|
||
|
|
||
|
func (f stringNotLikeFunc) String() string {
|
||
|
return toStringLikeFuncString(stringNotLike, f.stringLikeFunc.k, f.stringLikeFunc.values)
|
||
|
}
|
||
|
|
||
|
func validateStringLikeValues(n name, key Key, values set.StringSet) error {
|
||
|
for _, s := range values.ToSlice() {
|
||
|
switch key {
|
||
|
case S3XAmzCopySource:
|
||
|
bucket, object := path2BucketAndObject(s)
|
||
|
if object == "" {
|
||
|
return fmt.Errorf("invalid value '%v' for '%v' for %v condition", s, S3XAmzCopySource, n)
|
||
|
}
|
||
|
if err := s3utils.CheckValidBucketName(bucket); err != nil {
|
||
|
return err
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return nil
|
||
|
}
|
||
|
|
||
|
// newStringLikeFunc - returns new StringLike function.
|
||
|
func newStringLikeFunc(key Key, values ValueSet) (Function, error) {
|
||
|
valueStrings, err := valuesToStringSlice(stringLike, values)
|
||
|
if err != nil {
|
||
|
return nil, err
|
||
|
}
|
||
|
|
||
|
return NewStringLikeFunc(key, valueStrings...)
|
||
|
}
|
||
|
|
||
|
// NewStringLikeFunc - returns new StringLike function.
|
||
|
func NewStringLikeFunc(key Key, values ...string) (Function, error) {
|
||
|
sset := set.CreateStringSet(values...)
|
||
|
if err := validateStringLikeValues(stringLike, key, sset); err != nil {
|
||
|
return nil, err
|
||
|
}
|
||
|
|
||
|
return &stringLikeFunc{key, sset}, nil
|
||
|
}
|
||
|
|
||
|
// newStringNotLikeFunc - returns new StringNotLike function.
|
||
|
func newStringNotLikeFunc(key Key, values ValueSet) (Function, error) {
|
||
|
valueStrings, err := valuesToStringSlice(stringNotLike, values)
|
||
|
if err != nil {
|
||
|
return nil, err
|
||
|
}
|
||
|
|
||
|
return NewStringNotLikeFunc(key, valueStrings...)
|
||
|
}
|
||
|
|
||
|
// NewStringNotLikeFunc - returns new StringNotLike function.
|
||
|
func NewStringNotLikeFunc(key Key, values ...string) (Function, error) {
|
||
|
sset := set.CreateStringSet(values...)
|
||
|
if err := validateStringLikeValues(stringNotLike, key, sset); err != nil {
|
||
|
return nil, err
|
||
|
}
|
||
|
|
||
|
return &stringNotLikeFunc{stringLikeFunc{key, sset}}, nil
|
||
|
}
|