- 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.
181 lines
4.9 KiB
Go
181 lines
4.9 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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"net"
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"sort"
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)
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func toIPAddressFuncString(n name, key Key, values []*net.IPNet) string {
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valueStrings := []string{}
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for _, value := range values {
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valueStrings = append(valueStrings, value.String())
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}
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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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// ipAddressFunc - IP address function. It checks whether value by Key in given
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// values is in IP network. Here Key must be AWSSourceIP.
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// For example,
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// - if values = [192.168.1.0/24], at evaluate() it returns whether IP address
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// in value map for AWSSourceIP falls in the network 192.168.1.10/24.
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type ipAddressFunc struct {
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k Key
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values []*net.IPNet
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}
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// evaluate() - evaluates to check whether IP address in values map for AWSSourceIP
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// falls in one of network or not.
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func (f ipAddressFunc) evaluate(values map[string][]string) bool {
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IPs := []net.IP{}
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for _, s := range values[f.k.Name()] {
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IP := net.ParseIP(s)
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if IP == nil {
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panic(fmt.Errorf("invalid IP address '%v'", s))
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}
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IPs = append(IPs, IP)
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}
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for _, IP := range IPs {
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for _, IPNet := range f.values {
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if IPNet.Contains(IP) {
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return true
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}
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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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// Key is always AWSSourceIP.
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func (f ipAddressFunc) key() Key {
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return f.k
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}
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// name() - returns "IpAddress" condition name.
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func (f ipAddressFunc) name() name {
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return ipAddress
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}
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func (f ipAddressFunc) String() string {
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return toIPAddressFuncString(ipAddress, 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 ipAddressFunc) 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 {
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values.Add(NewStringValue(value.String()))
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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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// notIPAddressFunc - Not IP address function. It checks whether value by Key in given
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// values is NOT in IP network. Here Key must be AWSSourceIP.
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// For example,
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// - if values = [192.168.1.0/24], at evaluate() it returns whether IP address
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// in value map for AWSSourceIP does not fall in the network 192.168.1.10/24.
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type notIPAddressFunc struct {
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ipAddressFunc
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}
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// evaluate() - evaluates to check whether IP address in values map for AWSSourceIP
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// does not fall in one of network.
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func (f notIPAddressFunc) evaluate(values map[string][]string) bool {
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return !f.ipAddressFunc.evaluate(values)
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}
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// name() - returns "NotIpAddress" condition name.
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func (f notIPAddressFunc) name() name {
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return notIPAddress
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}
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func (f notIPAddressFunc) String() string {
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return toIPAddressFuncString(notIPAddress, f.ipAddressFunc.k, f.ipAddressFunc.values)
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}
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func valuesToIPNets(n name, values ValueSet) ([]*net.IPNet, error) {
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IPNets := []*net.IPNet{}
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for v := range values {
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s, err := v.GetString()
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if err != nil {
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return nil, fmt.Errorf("value %v must be string representation of CIDR for %v condition", v, n)
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}
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var IPNet *net.IPNet
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_, IPNet, err = net.ParseCIDR(s)
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if err != nil {
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return nil, fmt.Errorf("value %v must be CIDR string for %v condition", s, n)
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}
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IPNets = append(IPNets, IPNet)
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}
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return IPNets, nil
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}
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// newIPAddressFunc - returns new IP address function.
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func newIPAddressFunc(key Key, values ValueSet) (Function, error) {
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IPNets, err := valuesToIPNets(ipAddress, values)
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if err != nil {
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return nil, err
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}
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return NewIPAddressFunc(key, IPNets...)
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}
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// NewIPAddressFunc - returns new IP address function.
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func NewIPAddressFunc(key Key, IPNets ...*net.IPNet) (Function, error) {
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if key != AWSSourceIP {
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return nil, fmt.Errorf("only %v key is allowed for %v condition", AWSSourceIP, ipAddress)
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}
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return &ipAddressFunc{key, IPNets}, nil
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}
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// newNotIPAddressFunc - returns new Not IP address function.
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func newNotIPAddressFunc(key Key, values ValueSet) (Function, error) {
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IPNets, err := valuesToIPNets(notIPAddress, values)
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if err != nil {
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return nil, err
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}
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return NewNotIPAddressFunc(key, IPNets...)
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}
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// NewNotIPAddressFunc - returns new Not IP address function.
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func NewNotIPAddressFunc(key Key, IPNets ...*net.IPNet) (Function, error) {
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if key != AWSSourceIP {
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return nil, fmt.Errorf("only %v key is allowed for %v condition", AWSSourceIP, notIPAddress)
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}
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return ¬IPAddressFunc{ipAddressFunc{key, IPNets}}, nil
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}
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