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
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
// Copyright (C) 2019-2023 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand 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.
//
// go-algorand 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 go-algorand. If not, see <https://www.gnu.org/licenses/>.
package fuzzer
import (
"encoding/json"
"fmt"
"reflect"
"github.com/algorand/go-algorand/data/basics"
"github.com/algorand/go-algorand/protocol"
)
type VoteFilterMask struct {
StartRound, EndRound basics.Round
StartPeriod, EndPeriod period
StartStep, EndStep step
}
type VoteFilterConfig struct {
IncludeMasks []VoteFilterMask
ExcludeMasks []VoteFilterMask
DebugMessages bool
}
type VoteFilter struct {
NetworkFilter
upstream UpstreamFilter
downstream DownstreamFilter
fuzzer *Fuzzer
nodeID int
NetworkFilterFactory
config *VoteFilterConfig
}
func (n *VoteFilter) SendMessage(sourceNode, targetNode int, tag protocol.Tag, data []byte) {
if n.Eval(tag, data, "S") {
n.downstream.SendMessage(sourceNode, targetNode, tag, data)
}
}
func (n *VoteFilter) GetDownstreamFilter() DownstreamFilter {
return n.downstream
}
func (n *VoteFilter) ReceiveMessage(sourceNode int, tag protocol.Tag, data []byte) {
if n.Eval(tag, data, "R") {
n.upstream.ReceiveMessage(sourceNode, tag, data)
}
}
func (n *VoteFilter) SetDownstreamFilter(f DownstreamFilter) {
n.downstream = f
}
func (n *VoteFilter) SetUpstreamFilter(f UpstreamFilter) {
n.upstream = f
}
func (n *VoteFilter) CreateFilter(nodeID int, fuzzer *Fuzzer) NetworkFilter {
return &VoteFilter{
config: n.config,
fuzzer: fuzzer,
nodeID: nodeID,
}
}
func (n *VoteFilter) Tick(newClockTime int) bool {
return n.upstream.Tick(newClockTime)
}
func MakeVoteFilter(voteFilterConfig *VoteFilterConfig) *VoteFilter {
return &VoteFilter{
config: voteFilterConfig,
}
}
func (n *VoteFilter) Eval(tag protocol.Tag, data []byte, direction string) bool {
msgDecoder := n.fuzzer.facades[n.nodeID].GetFilterByType(reflect.TypeOf(&MessageDecoderFilter{})).(*MessageDecoderFilter)
if msgDecoder == nil {
return true
}
uv, _, _ := msgDecoder.getDecodedMessage(tag, data)
if uv == nil {
return true
}
included := false
for _, mask := range n.config.IncludeMasks {
if mask.StartRound <= uv.R.Round && mask.EndRound >= uv.R.Round &&
mask.StartPeriod <= uv.R.Period && mask.EndPeriod >= uv.R.Period &&
mask.StartStep <= uv.R.Step && mask.EndStep >= uv.R.Step {
included = true
break
}
}
if !included {
if n.config.DebugMessages {
fmt.Printf("VoteFilter(%s) service-%v : (%d,%d,%d) skipped. Rules (%d-%d, %d-%d, %d-%d)\n", direction, n.nodeID, uv.R.Round, uv.R.Period, uv.R.Step, n.config.IncludeMasks[0].StartRound, n.config.IncludeMasks[0].EndRound, n.config.IncludeMasks[0].StartPeriod, n.config.IncludeMasks[0].EndPeriod, n.config.IncludeMasks[0].StartStep, n.config.IncludeMasks[0].EndStep)
}
return false
}
excluded := false
for _, mask := range n.config.ExcludeMasks {
if mask.StartRound <= uv.R.Round && mask.EndRound >= uv.R.Round &&
mask.StartPeriod <= uv.R.Period && mask.EndPeriod >= uv.R.Period &&
mask.StartStep <= uv.R.Step && mask.EndStep >= uv.R.Step {
excluded = true
break
}
}
if excluded {
if n.config.DebugMessages {
fmt.Printf("VoteFilter(%s) service-%v : (%d,%d,%d) skipped\n", direction, n.nodeID, uv.R.Round, uv.R.Period, uv.R.Step)
}
return false
}
if n.config.DebugMessages {
fmt.Printf("VoteFilter(%s) service-%v : (%d,%d,%d) passed\n", direction, n.nodeID, uv.R.Round, uv.R.Period, uv.R.Step)
}
return true
}
// Unmarshall VoteFilter
func (n *VoteFilter) Unmarshal(b []byte) NetworkFilterFactory {
type voteFilterJSON struct {
Name string
VoteFilterConfig VoteFilterConfig
}
var jsonConfig voteFilterJSON
if err := json.Unmarshal(b, &jsonConfig); err != nil {
return nil
}
if jsonConfig.Name != "VoteFilterJSON" {
return nil
}
return MakeVoteFilter(&jsonConfig.VoteFilterConfig)
}
// register VoteFilter
func init() {
registeredFilterFactories = append(registeredFilterFactories, &VoteFilter{})
}
|
