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utils.go
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utils.go
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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright 2019 DNA Dev team
//
/*
* Copyright (C) 2018 The ontology Authors
* This file is part of The ontology library.
*
* The ontology is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The ontology 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with The ontology. If not, see <http://www.gnu.org/licenses/>.
*/
package auth
import (
"fmt"
"sort"
"github.com/DNAProject/DNA/common"
"github.com/DNAProject/DNA/smartcontract/event"
"github.com/DNAProject/DNA/smartcontract/service/native"
"github.com/DNAProject/DNA/smartcontract/service/native/utils"
)
var (
PreAdmin = []byte{0x01}
PreRoleFunc = []byte{0x02}
PreRoleToken = []byte{0x03}
PreDelegateStatus = []byte{0x04}
)
//type(this.contractAddr.Admin) = []byte
func concatContractAdminKey(native *native.NativeService, contractAddr common.Address) []byte {
this := native.ContextRef.CurrentContext().ContractAddress
adminKey := append(this[:], contractAddr[:]...)
adminKey = append(adminKey, PreAdmin...)
return adminKey
}
func getContractAdmin(native *native.NativeService, contractAddr common.Address) ([]byte, error) {
key := concatContractAdminKey(native, contractAddr)
item, err := utils.GetStorageItem(native, key)
if err != nil {
return nil, err
}
if item == nil { //is not set
return nil, nil
}
return item.Value, nil
}
func putContractAdmin(native *native.NativeService, contractAddr common.Address, adminDID []byte) error {
key := concatContractAdminKey(native, contractAddr)
utils.PutBytes(native, key, adminDID)
return nil
}
//type(this.contractAddr.RoleFunc.role) = roleFuncs
func concatRoleFuncKey(native *native.NativeService, contractAddr common.Address, role []byte) []byte {
this := native.ContextRef.CurrentContext().ContractAddress
roleFuncKey := append(this[:], contractAddr[:]...)
roleFuncKey = append(roleFuncKey, PreRoleFunc...)
roleFuncKey = append(roleFuncKey, role...)
return roleFuncKey
}
func getRoleFunc(native *native.NativeService, contractAddr common.Address, role []byte) (*roleFuncs, error) {
key := concatRoleFuncKey(native, contractAddr, role)
item, err := utils.GetStorageItem(native, key)
if err != nil {
return nil, err
}
if item == nil { //is not set
return nil, nil
}
source := common.NewZeroCopySource(item.Value)
rF := new(roleFuncs)
err = rF.Deserialization(source)
if err != nil {
return nil, fmt.Errorf("deserialize roleFuncs object failed. data: %x", item.Value)
}
return rF, nil
}
func putRoleFunc(native *native.NativeService, contractAddr common.Address, role []byte, funcs *roleFuncs) error {
key := concatRoleFuncKey(native, contractAddr, role)
utils.PutBytes(native, key, common.SerializeToBytes(funcs))
return nil
}
//type(this.contractAddr.RoleP.ontID) = roleTokens
func concatDIDTokenKey(native *native.NativeService, contractAddr common.Address, DID []byte) []byte {
this := native.ContextRef.CurrentContext().ContractAddress
tokenKey := append(this[:], contractAddr[:]...)
tokenKey = append(tokenKey, PreRoleToken...)
tokenKey = append(tokenKey, DID...)
return tokenKey
}
func getDIDToken(native *native.NativeService, contractAddr common.Address, DID []byte) (*roleTokens, error) {
key := concatDIDTokenKey(native, contractAddr, DID)
item, err := utils.GetStorageItem(native, key)
if err != nil {
return nil, err
}
if item == nil { //is not set
return nil, nil
}
source := common.NewZeroCopySource(item.Value)
rT := new(roleTokens)
err = rT.Deserialization(source)
if err != nil {
return nil, fmt.Errorf("deserialize roleTokens object failed. data: %x", item.Value)
}
return rT, nil
}
func putDIDToken(native *native.NativeService, contractAddr common.Address, DID []byte, tokens *roleTokens) error {
key := concatDIDTokenKey(native, contractAddr, DID)
utils.PutBytes(native, key, common.SerializeToBytes(tokens))
return nil
}
//type(this.contractAddr.DelegateStatus.ontID)
func concatDelegateStatusKey(native *native.NativeService, contractAddr common.Address, DID []byte) []byte {
this := native.ContextRef.CurrentContext().ContractAddress
key := append(this[:], contractAddr[:]...)
key = append(key, PreDelegateStatus...)
key = append(key, DID...)
return key
}
func getDelegateStatus(native *native.NativeService, contractAddr common.Address, DID []byte) (*Status, error) {
key := concatDelegateStatusKey(native, contractAddr, DID)
item, err := utils.GetStorageItem(native, key)
if err != nil {
return nil, err
}
if item == nil {
return nil, nil
}
status := new(Status)
source := common.NewZeroCopySource(item.Value)
err = status.Deserialization(source)
if err != nil {
return nil, fmt.Errorf("deserialize Status object failed. data: %x", item.Value)
}
return status, nil
}
func putDelegateStatus(native *native.NativeService, contractAddr common.Address, DID []byte, status *Status) error {
key := concatDelegateStatusKey(native, contractAddr, DID)
utils.PutBytes(native, key, common.SerializeToBytes(status))
return nil
}
//remove duplicates in the slice of string and sorts the slice in increasing order.
func StringsDedupAndSort(s []string) []string {
smap := make(map[string]int)
for i, str := range s {
if str == "" {
continue
}
smap[str] = i
}
ret := make([]string, len(smap))
i := 0
for str := range smap {
ret[i] = str
i++
}
sort.Strings(ret)
return ret
}
func pushEvent(native *native.NativeService, s interface{}) {
event := new(event.NotifyEventInfo)
event.ContractAddress = native.ContextRef.CurrentContext().ContractAddress
event.States = s
native.Notifications = append(native.Notifications, event)
}
func serializeAddress(sink *common.ZeroCopySink, addr common.Address) {
sink.WriteVarBytes(addr[:])
}