111 lines
3 KiB
Go
111 lines
3 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
|
|
//
|
|
// This file is part of MinIO Object Storage stack
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package condition
|
|
|
|
import (
|
|
"fmt"
|
|
"net/http"
|
|
"reflect"
|
|
"strconv"
|
|
)
|
|
|
|
// booleanFunc - Bool condition function. It checks whether Key is true or false.
|
|
// https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_condition_operators.html#Conditions_Boolean
|
|
type booleanFunc struct {
|
|
k Key
|
|
value string
|
|
}
|
|
|
|
// evaluate() - evaluates to check whether Key is present in given values or not.
|
|
// Depending on condition boolean value, this function returns true or false.
|
|
func (f booleanFunc) evaluate(values map[string][]string) bool {
|
|
requestValue, ok := values[http.CanonicalHeaderKey(f.k.Name())]
|
|
if !ok {
|
|
requestValue = values[f.k.Name()]
|
|
}
|
|
|
|
if len(requestValue) == 0 {
|
|
return false
|
|
}
|
|
|
|
return f.value == requestValue[0]
|
|
}
|
|
|
|
// key() - returns condition key which is used by this condition function.
|
|
func (f booleanFunc) key() Key {
|
|
return f.k
|
|
}
|
|
|
|
// name() - returns "Bool" condition name.
|
|
func (f booleanFunc) name() name {
|
|
return boolean
|
|
}
|
|
|
|
func (f booleanFunc) String() string {
|
|
return fmt.Sprintf("%v:%v:%v", boolean, f.k, f.value)
|
|
}
|
|
|
|
// toMap - returns map representation of this function.
|
|
func (f booleanFunc) toMap() map[Key]ValueSet {
|
|
if !f.k.IsValid() {
|
|
return nil
|
|
}
|
|
|
|
return map[Key]ValueSet{
|
|
f.k: NewValueSet(NewStringValue(f.value)),
|
|
}
|
|
}
|
|
|
|
func newBooleanFunc(key Key, values ValueSet) (Function, error) {
|
|
if key != AWSSecureTransport {
|
|
return nil, fmt.Errorf("only %v key is allowed for %v condition", AWSSecureTransport, boolean)
|
|
}
|
|
|
|
if len(values) != 1 {
|
|
return nil, fmt.Errorf("only one value is allowed for boolean condition")
|
|
}
|
|
|
|
var value Value
|
|
for v := range values {
|
|
value = v
|
|
switch v.GetType() {
|
|
case reflect.Bool:
|
|
if _, err := v.GetBool(); err != nil {
|
|
return nil, err
|
|
}
|
|
case reflect.String:
|
|
s, err := v.GetString()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if _, err = strconv.ParseBool(s); err != nil {
|
|
return nil, fmt.Errorf("value must be a boolean string for boolean condition")
|
|
}
|
|
default:
|
|
return nil, fmt.Errorf("value must be a boolean for boolean condition")
|
|
}
|
|
}
|
|
|
|
return &booleanFunc{key, value.String()}, nil
|
|
}
|
|
|
|
// NewBoolFunc - returns new Bool function.
|
|
func NewBoolFunc(key Key, value string) (Function, error) {
|
|
return &booleanFunc{key, value}, nil
|
|
}
|