119 lines
2.1 KiB
Go
119 lines
2.1 KiB
Go
|
package home
|
||
|
|
|
||
|
|
import (
|
||
|
|
"strings"
|
||
|
|
"sync"
|
||
|
|
|
||
|
|
"github.com/AdguardTeam/golibs/log"
|
||
|
|
whois "github.com/likexian/whois-go"
|
||
|
|
)
|
||
|
|
|
||
|
|
// Whois - module context
|
||
|
|
type Whois struct {
|
||
|
|
clients *clientsContainer
|
||
|
|
ips map[string]bool
|
||
|
|
lock sync.Mutex
|
||
|
|
ipChan chan string
|
||
|
|
}
|
||
|
|
|
||
|
|
// Create module context
|
||
|
|
func initWhois(clients *clientsContainer) *Whois {
|
||
|
|
w := Whois{}
|
||
|
|
w.clients = clients
|
||
|
|
w.ips = make(map[string]bool)
|
||
|
|
w.ipChan = make(chan string, 255)
|
||
|
|
go w.workerLoop()
|
||
|
|
return &w
|
||
|
|
}
|
||
|
|
|
||
|
|
// Parse plain-text data from the response
|
||
|
|
func whoisParse(data string) map[string]string {
|
||
|
|
m := map[string]string{}
|
||
|
|
lines := strings.Split(data, "\n")
|
||
|
|
for _, ln := range lines {
|
||
|
|
ln = strings.TrimSpace(ln)
|
||
|
|
|
||
|
|
if len(ln) == 0 || ln[0] == '#' {
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
|
||
|
|
kv := strings.SplitN(ln, ":", 2)
|
||
|
|
if len(kv) != 2 {
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
k := strings.TrimSpace(kv[0])
|
||
|
|
k = strings.ToLower(k)
|
||
|
|
v := strings.TrimSpace(kv[1])
|
||
|
|
|
||
|
|
if k == "orgname" || k == "org-name" {
|
||
|
|
m["orgname"] = v
|
||
|
|
} else if k == "city" {
|
||
|
|
m["city"] = v
|
||
|
|
} else if k == "country" {
|
||
|
|
m["country"] = v
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return m
|
||
|
|
}
|
||
|
|
|
||
|
|
// Request WHOIS information
|
||
|
|
func whoisProcess(ip string) [][]string {
|
||
|
|
data := [][]string{}
|
||
|
|
resp, err := whois.Whois(ip)
|
||
|
|
if err != nil {
|
||
|
|
log.Debug("Whois: error: %s IP:%s", err, ip)
|
||
|
|
return data
|
||
|
|
}
|
||
|
|
|
||
|
|
log.Debug("Whois: IP:%s response: %d bytes", ip, len(resp))
|
||
|
|
|
||
|
|
m := whoisParse(resp)
|
||
|
|
|
||
|
|
keys := []string{"orgname", "country", "city"}
|
||
|
|
for _, k := range keys {
|
||
|
|
v, found := m[k]
|
||
|
|
if !found {
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
pair := []string{k, v}
|
||
|
|
data = append(data, pair)
|
||
|
|
}
|
||
|
|
|
||
|
|
return data
|
||
|
|
}
|
||
|
|
|
||
|
|
// Begin - begin requesting WHOIS info
|
||
|
|
func (w *Whois) Begin(ip string) {
|
||
|
|
w.lock.Lock()
|
||
|
|
_, found := w.ips[ip]
|
||
|
|
if found {
|
||
|
|
w.lock.Unlock()
|
||
|
|
return
|
||
|
|
}
|
||
|
|
w.ips[ip] = true
|
||
|
|
w.lock.Unlock()
|
||
|
|
|
||
|
|
log.Debug("Whois: adding %s", ip)
|
||
|
|
select {
|
||
|
|
case w.ipChan <- ip:
|
||
|
|
//
|
||
|
|
default:
|
||
|
|
log.Debug("Whois: queue is full")
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get IP address from channel; get WHOIS info; associate info with a client
|
||
|
|
func (w *Whois) workerLoop() {
|
||
|
|
for {
|
||
|
|
var ip string
|
||
|
|
ip = <-w.ipChan
|
||
|
|
|
||
|
|
info := whoisProcess(ip)
|
||
|
|
if len(info) == 0 {
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
|
||
|
|
w.clients.SetWhoisInfo(ip, info)
|
||
|
|
}
|
||
|
|
}
|