/
mylg.go
248 lines (234 loc) · 5.45 KB
/
mylg.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
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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
// myLG is command line looking glass that written with Go language
// it tries from its own icmp and external looking glasses tools
package main
import (
"errors"
"github.com/briandowns/spinner"
"net"
"regexp"
"strings"
"time"
"github.com/mehrdadrad/mylg/cli"
"github.com/mehrdadrad/mylg/icmp"
"github.com/mehrdadrad/mylg/lg"
"github.com/mehrdadrad/mylg/ns"
"github.com/mehrdadrad/mylg/peeringdb"
"github.com/mehrdadrad/mylg/ripe"
)
// Provider represents looking glass
type Provider interface {
Set(host, version string)
GetDefaultNode() string
GetNodes() []string
ChangeNode(node string)
Ping() (string, error)
Trace() chan string
BGP() chan string
}
// Whois represents whois providers
type Whois interface {
Set(r string)
GetData() bool
PrettyPrint()
}
var (
// register looking glass hosts
providers = map[string]Provider{"telia": new(lg.Telia), "level3": new(lg.Level3), "cogent": new(lg.Cogent)}
whois = map[string]Whois{"asn": new(ripe.ASN), "prefix": new(ripe.Prefix)}
pNames = providerNames()
nsr *ns.Request
)
// providerName
func providerNames() []string {
pNames := []string{}
for p := range providers {
pNames = append(pNames, p)
}
return pNames
}
// validateProvider
func validateProvider(p string) (string, error) {
pNames := []string{}
match, _ := regexp.MatchString("("+strings.Join(pNames, "|")+")", p)
p = strings.ToLower(p)
if match {
return p, nil
}
return "", errors.New("provider not support")
}
func init() {
// Initialize name server data
nsr = ns.NewRequest()
go nsr.Init()
}
func main() {
var (
err error
request string
loop = true
cPName = "local"
)
rep := make(chan string, 1)
req := make(chan string, 1)
nxt := make(chan struct{}, 1)
c := cli.Init("local")
go c.Run(req, nxt)
r, _ := regexp.Compile(`(ping|trace|bgp|lg|ns|dig|whois|peering|connect|node|local|mode|help|exit|quit)\s{0,1}(.*)`)
s := spinner.New(spinner.CharSets[26], 220*time.Millisecond)
for loop {
select {
case request, loop = <-req:
if !loop {
break
}
if len(request) < 1 {
c.Next()
continue
}
subReq := r.FindStringSubmatch(request)
if len(subReq) == 0 {
println("syntax error")
c.Next()
continue
}
prompt := c.GetPrompt()
cmd := strings.TrimSpace(subReq[1])
args := strings.TrimSpace(subReq[2])
switch {
case cmd == "ping" && cPName == "local":
p := icmp.NewPing()
ra, err := net.ResolveIPAddr("ip", args)
if err != nil {
println("cannot resolve", args, ": Unknown host")
c.Next()
continue
}
p.IP(ra.String())
for n := 0; n < 4; n++ {
p.Ping(rep)
println(<-rep)
}
c.Next()
case cmd == "ping":
s.Prefix = "please wait "
s.Start()
providers[cPName].Set(args, "ipv4")
m, _ := providers[cPName].Ping()
s.Stop()
println(m)
c.Next()
case cmd == "trace":
switch {
case strings.HasPrefix(prompt, "local"):
trace := icmp.Trace{}
trace.Run(args)
case strings.HasPrefix(prompt, "lg"):
providers[cPName].Set(args, "ipv4")
for l := range providers[cPName].Trace() {
println(l)
}
}
c.Next()
case cmd == "bgp" && cPName != "local":
providers[cPName].Set(args, "ipv4")
for l := range providers[cPName].BGP() {
println(l)
}
c.Next()
case cmd == "dig":
nsr.Dig(args)
c.Next()
case cmd == "node":
switch {
case strings.HasPrefix(prompt, "lg"):
if _, ok := providers[cPName]; ok {
providers[cPName].ChangeNode(args)
c.UpdatePromptN(args, 3)
} else {
println("the specified node doesn't support")
}
case strings.HasPrefix(prompt, "ns"):
if !nsr.ChkNode(args) {
println("error: argument is not valid")
continue
}
c.UpdatePromptN(args, 3)
}
c.Next()
case cmd == "local":
nsr.Local()
cPName = "local"
c.SetPrompt(cPName)
c.Next()
case cmd == "lg":
c.SetPrompt("lg")
c.UpdateCompleter("connect", pNames)
c.Next()
case cmd == "connect":
switch {
case strings.HasPrefix(prompt, "lg"):
var pName string
if pName, err = validateProvider(args); err != nil {
println("provider not available")
c.Next()
continue
}
cPName = pName
if _, ok := providers[cPName]; ok {
c.UpdatePromptN(cPName+"/"+providers[cPName].GetDefaultNode(), 2)
go func() {
c.UpdateCompleter("node", providers[cPName].GetNodes())
}()
} else {
println("it doesn't support")
}
case strings.HasPrefix(prompt, "ns"):
if !nsr.ChkCountry(args) {
println("error: argument is not valid")
continue
}
c.SetPrompt("ns/" + args)
nsr.SetNodeList(c)
}
c.Next()
case cmd == "ns":
nsr.SetCountryList(c)
nsr.ResetNodeList(c)
c.SetPrompt("ns")
c.Next()
case cmd == "whois":
if ripe.IsASN(args) {
whois["asn"].Set(args)
whois["asn"].GetData()
whois["asn"].PrettyPrint()
} else {
whois["prefix"].Set(args)
whois["prefix"].GetData()
whois["prefix"].PrettyPrint()
}
c.Next()
case cmd == "peering":
peeringdb.Search(args)
c.Next()
case cmd == "mode":
if args == "vim" {
c.SetVim()
} else if args == "emacs" {
c.SetEmacs()
} else {
println("the request mode doesn't support")
}
c.Next()
case cmd == "help":
c.Help()
c.Next()
case cmd == "exit", cmd == "quit":
c.Close(nxt)
close(req)
// todo
default:
c.Next()
}
}
}
}