- remove old bucket policy handling - add new policy handling - add new policy handling unit tests This patch brings support to bucket policy to have more control not limiting to anonymous. Bucket owner controls to allow/deny any rest API. For example server side encryption can be controlled by allowing PUT/GET objects with encryptions including bucket owner.
166 lines
4.6 KiB
Go
166 lines
4.6 KiB
Go
/*
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* Minio Cloud Storage, (C) 2018 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package condition
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import (
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"fmt"
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"sort"
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"strings"
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"github.com/minio/minio-go/pkg/set"
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"github.com/minio/minio/pkg/wildcard"
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)
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func toStringLikeFuncString(n name, key Key, values set.StringSet) string {
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valueStrings := values.ToSlice()
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sort.Strings(valueStrings)
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return fmt.Sprintf("%v:%v:%v", n, key, valueStrings)
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}
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// stringLikeFunc - String like function. It checks whether value by Key in given
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// values map is widcard matching in condition values.
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// For example,
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// - if values = ["mybucket/foo*"], at evaluate() it returns whether string
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// in value map for Key is wildcard matching in values.
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type stringLikeFunc struct {
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k Key
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values set.StringSet
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}
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// evaluate() - evaluates to check whether value by Key in given values is wildcard
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// matching in condition values.
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func (f stringLikeFunc) evaluate(values map[string][]string) bool {
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for _, v := range values[f.k.Name()] {
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if !f.values.FuncMatch(wildcard.Match, v).IsEmpty() {
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return true
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}
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}
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return false
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}
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// key() - returns condition key which is used by this condition function.
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func (f stringLikeFunc) key() Key {
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return f.k
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}
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// name() - returns "StringLike" function name.
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func (f stringLikeFunc) name() name {
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return stringLike
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}
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func (f stringLikeFunc) String() string {
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return toStringLikeFuncString(stringLike, f.k, f.values)
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}
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// toMap - returns map representation of this function.
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func (f stringLikeFunc) toMap() map[Key]ValueSet {
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if !f.k.IsValid() {
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return nil
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}
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values := NewValueSet()
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for _, value := range f.values.ToSlice() {
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values.Add(NewStringValue(value))
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}
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return map[Key]ValueSet{
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f.k: values,
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}
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}
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// stringNotLikeFunc - String not like function. It checks whether value by Key in given
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// values map is NOT widcard matching in condition values.
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// For example,
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// - if values = ["mybucket/foo*"], at evaluate() it returns whether string
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// in value map for Key is NOT wildcard matching in values.
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type stringNotLikeFunc struct {
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stringLikeFunc
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}
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// evaluate() - evaluates to check whether value by Key in given values is NOT wildcard
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// matching in condition values.
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func (f stringNotLikeFunc) evaluate(values map[string][]string) bool {
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return !f.stringLikeFunc.evaluate(values)
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}
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// name() - returns "StringNotLike" function name.
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func (f stringNotLikeFunc) name() name {
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return stringNotLike
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}
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func (f stringNotLikeFunc) String() string {
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return toStringLikeFuncString(stringNotLike, f.stringLikeFunc.k, f.stringLikeFunc.values)
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}
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func validateStringLikeValues(n name, key Key, values set.StringSet) error {
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for _, s := range values.ToSlice() {
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switch key {
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case S3XAmzCopySource:
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tokens := strings.SplitN(s, "/", 2)
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if len(tokens) < 2 {
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return fmt.Errorf("invalid value '%v' for '%v' in %v condition", s, key, n)
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}
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// FIXME: tokens[0] must be a valid bucket name.
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}
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}
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return nil
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}
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// newStringLikeFunc - returns new StringLike function.
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func newStringLikeFunc(key Key, values ValueSet) (Function, error) {
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valueStrings, err := valuesToStringSlice(stringLike, values)
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if err != nil {
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return nil, err
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}
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return NewStringLikeFunc(key, valueStrings...)
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}
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// NewStringLikeFunc - returns new StringLike function.
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func NewStringLikeFunc(key Key, values ...string) (Function, error) {
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sset := set.CreateStringSet(values...)
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if err := validateStringLikeValues(stringLike, key, sset); err != nil {
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return nil, err
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}
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return &stringLikeFunc{key, sset}, nil
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}
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// newStringNotLikeFunc - returns new StringNotLike function.
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func newStringNotLikeFunc(key Key, values ValueSet) (Function, error) {
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valueStrings, err := valuesToStringSlice(stringNotLike, values)
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if err != nil {
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return nil, err
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}
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return NewStringNotLikeFunc(key, valueStrings...)
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}
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// NewStringNotLikeFunc - returns new StringNotLike function.
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func NewStringNotLikeFunc(key Key, values ...string) (Function, error) {
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sset := set.CreateStringSet(values...)
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if err := validateStringLikeValues(stringNotLike, key, sset); err != nil {
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return nil, err
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}
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return &stringNotLikeFunc{stringLikeFunc{key, sset}}, nil
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}
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