-
Notifications
You must be signed in to change notification settings - Fork 142
/
block_validator.go
111 lines (94 loc) · 3.12 KB
/
block_validator.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
// 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 validation
import (
"errors"
"fmt"
"github.com/DNAProject/DNA/core/ledger"
"github.com/DNAProject/DNA/core/signature"
"github.com/DNAProject/DNA/core/types"
ontErrors "github.com/DNAProject/DNA/errors"
)
// VerifyBlock checks whether the block is valid
func VerifyBlock(block *types.Block, ld *ledger.Ledger, completely bool) error {
header := block.Header
if header.Height == 0 {
return nil
}
m := len(header.Bookkeepers) - (len(header.Bookkeepers)-1)/3
hash := block.Hash()
err := signature.VerifyMultiSignature(hash[:], header.Bookkeepers, m, header.SigData)
if err != nil {
return err
}
prevHeader, err := ld.GetHeaderByHash(block.Header.PrevBlockHash)
if err != nil {
return fmt.Errorf("[BlockValidator], can not find prevHeader: %s", err)
}
err = VerifyHeader(block.Header, prevHeader)
if err != nil {
return err
}
//verfiy block's transactions
if completely {
/*
//TODO: NextBookkeeper Check.
bookkeeperaddress, err := ledger.GetBookkeeperAddress(ld.Blockchain.GetBookkeepersByTXs(block.Transactions))
if err != nil {
return errors.New(fmt.Sprintf("GetBookkeeperAddress Failed."))
}
if block.Header.NextBookkeeper != bookkeeperaddress {
return errors.New(fmt.Sprintf("Bookkeeper is not validate."))
}
*/
for _, txVerify := range block.Transactions {
if errCode := VerifyTransaction(txVerify); errCode != ontErrors.ErrNoError {
return errors.New(fmt.Sprintf("VerifyTransaction failed when verifiy block"))
}
if errCode := VerifyTransactionWithLedger(txVerify, ld); errCode != ontErrors.ErrNoError {
return errors.New(fmt.Sprintf("VerifyTransaction failed when verifiy block"))
}
}
}
return nil
}
func VerifyHeader(header, prevHeader *types.Header) error {
if header.Height == 0 {
return nil
}
if prevHeader == nil {
return errors.New("[BlockValidator], can not find previous block.")
}
if prevHeader.Height+1 != header.Height {
return errors.New("[BlockValidator], block height is incorrect.")
}
if prevHeader.Timestamp >= header.Timestamp {
return errors.New("[BlockValidator], block timestamp is incorrect.")
}
address, err := types.AddressFromBookkeepers(header.Bookkeepers)
if err != nil {
return err
}
if prevHeader.NextBookkeeper != address {
return fmt.Errorf("bookkeeper address error")
}
return nil
}