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geoip.go
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geoip.go
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package geoIp
import (
"encoding/json"
"fmt"
"log"
"net"
"os"
"path/filepath"
"github.com/oschwald/geoip2-golang"
"github.com/timerzz/proxypool/config"
)
var GeoIpDB GeoIP
func InitGeoIpDB() error {
parentPath := config.ResourceRoot()
geodbPath := "assets/GeoLite2-City.mmdb"
flagsPath := "assets/flags.json"
geodb := filepath.Join(parentPath, geodbPath)
flags := filepath.Join(parentPath, flagsPath)
// 判断文件是否存在
_, err := os.Stat(geodb)
if err != nil && os.IsNotExist(err) {
if err != nil {
log.Println("文件不存在, 请自行下载 Geoip2 City 库, 并保存在", geodb)
panic(err)
}
GeoIpDB = NewGeoIP(geodb, flags)
}
GeoIpDB = NewGeoIP(geodb, flags)
return nil
}
// GeoIP2
type GeoIP struct {
db *geoip2.Reader
emojiMap map[string]string
}
type CountryEmoji struct {
Code string `json:"code"`
Emoji string `json:"emoji"`
}
// new geoip from db file
func NewGeoIP(geodb, flags string) (geoip GeoIP) {
// 运行到这里时geodb只能为存在
db, err := geoip2.Open(geodb)
if err != nil {
log.Fatal(err)
}
geoip.db = db
_, err = os.Stat(flags)
if err != nil && os.IsNotExist(err) {
log.Println("flags 文件不存在, 请自行下载 flags.json, 并保存在 ", flags)
os.Exit(1)
} else {
data, err := os.ReadFile(flags)
if err != nil {
log.Fatal(err)
return
}
var countryEmojiList = make([]CountryEmoji, 0)
err = json.Unmarshal(data, &countryEmojiList)
if err != nil {
log.Fatalln(err.Error())
return
}
emojiMap := make(map[string]string)
for _, i := range countryEmojiList {
emojiMap[i.Code] = i.Emoji
}
geoip.emojiMap = emojiMap
}
return
}
// find ip info
func (g GeoIP) Find(ipORdomain string) (ip, country string, err error) {
ips, err := net.LookupIP(ipORdomain)
if err != nil {
return "", "", err
}
ip = ips[0].String()
var record *geoip2.City
record, err = g.db.City(ips[0])
if err != nil {
return
}
countryIsoCode := record.Country.IsoCode
emoji, found := g.emojiMap[countryIsoCode]
if found {
country = fmt.Sprintf("%v%v", emoji, countryIsoCode)
} else {
country = "🏁ZZ"
}
return ip, country, err
}