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ipLocator.go
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ipLocator.go
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// The MIT License (MIT)
// Copyright (c) 2014 Andreas Briese, eduToolbox@Bri-C GmbH, Sarstedt GERMANY
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
// Version 01/07/2015 ready for 2015 maxmind data format
package main
import (
"archive/zip"
"bytes"
"encoding/csv"
"flag"
"fmt"
"github.com/AndreasBriese/bbloom"
"github.com/boltdb/bolt"
"html/template"
"io"
"log"
"net"
"net/http"
"os"
"path/filepath"
"runtime"
"strconv"
"strings"
"time"
)
var infoHTML = `
<!DOCTYPE html>
<head>
<meta charset="utf-8" />
<title>ipLocator - get city locations from ip-numbers</title>
<style>
p {
margin-left: 10%;
margin-right: 5%;
}
#api{
margin-left: 5%;
margin-right: 5%;
}
</style>
<script>
function getLoc(){
ip = document.getElementById("ip").value;
if(ip){
try{
var xmlhttp = new XMLHttpRequest();
}catch(e){
try{
var xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}catch(e){};
};
xmlhttp.open("GET", encodeURI("http://bric.lepus.uberspace.de:61165/cb/"+ip), true);
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4) {
document.getElementById("ipLoc").value = xmlhttp.responseText;
}
};
xmlhttp.send(null);
}
}
</script>
</head>
<body style="font-family:Arial,sans-serif;font-size:16px;color:#633">
<hr color="#006">
<h2 style="text-align:center">
ipLocator @ bric.lepus.uberspace.de
</h2>
<hr color="#006">
<div>
<p>
IP number: <input type="text" id="ip" onchange="getLoc();" value="{{.Ip}}">
</p>
<p>
IP location: <input type="text" id="ipLoc" style="width:500px;; text-align:center;" disabled=disabled value="{{.IpLoc}}">
</p>
</div>
<hr color="#006">
<h3>API:</h3>
<div id="api">
<h4>text/plain:</h4>
http://bric.lepus.uberspace.de/xxx.xxx.xxx.xxx (IPv4) (ssl support https://oo.bootes.uberspace.de/IPv4)
<br>--> xxx.xxx.xxx.xxx: city name (country ISO-abbreviation -region name)
<br><small style="margin-left:23px">i.e: 62.227.4.198: Aurich (DE-Lower Saxony)</small>
<h4>text/json:</h4>
http://bric.lepus.uberspace.de/json/xxx.xxx.xxx.xxx (IPv4) (ssl support https://oo.bootes.uberspace.de/json/IPv4)
<br>--> { "xxx.xxx.xxx.xxx": {"city": "city name (country ISO-abbreviation -region name)", "geoLoc":[longitude, latitude]} }
<br><small style="margin-left:23px">i.e. { "66.249.70.90":{"city":"Mountain View (US-California)","geoLoc":[37.3860,-122.0838]}</small>
<h4>text/javascript: (JSONP)</h4>
http://bric.lepus.uberspace.de/iploc/xxx.xxx.xxx.xxx (IPv4) (ssl support https://oo.bootes.uberspace.de/json/IPv4)
<br>--> iploc({ "xxx.xxx.xxx.xxx": {"city": "city name (country ISO-abbreviation -region name)", "geoLoc":[longitude, latitude]} })
<br><small style="margin-left:23px">i.e. iploc({ "66.249.70.90":{"city":"Mountain View (US-California)","geoLoc":[37.3860,-122.0838]})</small>
</div>
<br>
<hr style="color:#006; line-width:0.5px" >
<center><small>
<br>Service-Demonstration by eduToolbox@Bri-C GmbH, Sarstedt <a href="http://edutoolbox.de">http://edutoolbox.de</a>
<br>Find the server software at <a href="http://github.com/AndreasBriese/ipLocator">http://github.com/AndreasBriese/ipLocator</a>
</small></center>
<img src="/eTL.png" height="70" style="margin-top:-70px;">
<hr style="color:#006; line-width:0.5px" >
<center><small>Datenschutzhinweis: Beim Seitenaufruf werden IP (anonymisiert) & URL für 24h gespeichert.</small></center>
<hr style="color:#006; line-width:0.5px" >
<center><small>This product includes GeoLite2 data created by MaxMind, available from <a href="http://www.maxmind.com">http://www.maxmind.com</a></small></center>
</body>
`
const (
IPLocsDBFileName = "./iplocs.bdb"
ServerAddr = ":9000" // change to your serveraddress and port
)
var (
iplocsDB *bolt.DB
locsBloom, ipBloom bbloom.Bloom
flagNewDB, flagServer, flagDownloadDB, flagJSON bool
flagIP2check string
buf []byte
)
func init() {
runtime.GOMAXPROCS(runtime.NumCPU())
flag.BoolVar(&flagDownloadDB, "download_DB", false, "Reload database from maxmind.com and Restore database from GeoLite-Data")
flag.BoolVar(&flagNewDB, "new_DB", false, "Restore database from maxmind.com GeoLite-Data")
flag.BoolVar(&flagServer, "server", false, "run server at localhost:9000")
flag.StringVar(&flagIP2check, "ip", "", "enter a csv-list of IP")
flag.BoolVar(&flagJSON, "json", false, "return JSON")
}
func logPanic(function func(http.ResponseWriter, *http.Request)) func(http.ResponseWriter, *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
defer func() {
if x := recover(); x != nil {
log.Printf("[%v] caught panic: %v", r.RemoteAddr, x)
}
}()
function(w, r)
}
}
func main() {
flag.Parse()
if flagDownloadDB {
log.Println("start loading GeoLite2-City-CSV.zip from maxmind.com")
// get GeoLite CSV-Database
// resp, err := http.Get("http://geolite.maxmind.com/download/geoip/database/GeoLiteCity_CSV/GeoLiteCity-latest.zip")
// or
// get GeoLite2 CSV-Database
resp, err := http.Get("http://geolite.maxmind.com/download/geoip/database/GeoLite2-City-CSV.zip")
if err != nil {
log.Fatal("could not connect with http://geolite.maxmind.com/download/geoip/database/GeoLite2-City-CSV.zip", err)
}
defer resp.Body.Close()
zipOut, err := os.Create("CSV.zip")
if err != nil {
log.Fatal("could not connect with http://geolite.maxmind.com/download/geoip/database/GeoLite2-City-CSV.zip", err)
}
defer zipOut.Close()
io.Copy(zipOut, resp.Body)
// unzip CSV.zip
log.Println("unzip CSV.zip")
if err := unzip("./CSV.zip", "./"); err != nil {
log.Fatalln("failed unzip CSV.zip ")
}
// Attention: if using GeoLite Database you need to change
// the foldername wildcard GeoLite2-City-CSV*
// get pathname and copy -City-Blocks.csv into upper dir
pth, err := filepath.Glob("GeoLite2-City-CSV*/GeoLite2-City-Blocks-IPv4.csv")
if err != nil || len(pth) == 0 {
log.Fatalln("no path GeoLite2-City-CSV*/GeoLite2-City-Blocks-IPv4.csv", err)
}
log.Println(pth)
if err := os.Rename(pth[0], "./GeoLite2-City-Blocks.csv"); err != nil {
log.Fatalln("mv City-Blocks", err)
}
// get pathname and copy -City-Locations into upper dir
// change ..-en.csv to other lang (-de|-fr|-pt-BR|-ru|-es|-ja|-zh-CN) to nmeet your client needs
pth, err = filepath.Glob("GeoLite2-City-CSV*/GeoLite2-City-Locations-en.csv")
if err != nil || len(pth) == 0 {
// change ..-en.csv to other lang (-de|-fr|-pt-BR|-ru|-es|-ja|-zh-CN) to nmeet your client needs
log.Fatalln("no path GeoLite2-City-CSV*/GeoLite2-City-Locations-en.csv", err)
}
if err := os.Rename(pth[0], "./GeoLite2-City-Locations.csv"); err != nil {
log.Fatalln("mv City-Locations", err)
}
// cleanup the unziped folder and CSV.zip
pth, err = filepath.Glob("GeoLite2-City-CSV*")
if err != nil {
log.Fatalln("no path GeoLite2-City-CSV*", err)
}
if err := os.RemoveAll(pth[0]); err != nil {
log.Fatalln("rm GeoLite2-City-CSV*", err)
}
if err := os.Remove("CSV.zip"); err != nil {
log.Fatalln("rm CSV.zip", err)
}
flagNewDB = true
}
var err error
if flagNewDB {
// initialize new working db
log.Println("start Renewing DB: ", IPLocsDBFileName)
_, err = os.Stat(IPLocsDBFileName)
if err == nil {
if err := os.Remove(IPLocsDBFileName); err != nil {
log.Fatalln("rm", IPLocsDBFileName, err)
}
log.Println("old ", IPLocsDBFileName, "deleted")
}
// open working db
iplocsDB, err = bolt.Open(IPLocsDBFileName, 0666, nil)
if err != nil {
log.Fatal("open", IPLocsDBFileName, err)
}
err = makeDatabase(iplocsDB)
if err != nil {
log.Fatal("makeDatabase ", err)
}
log.Println("successfully finished", IPLocsDBFileName)
} else {
// open working db
iplocsDB, err = bolt.Open(IPLocsDBFileName, 0666, nil)
if err != nil {
log.Fatal("open", IPLocsDBFileName, err)
}
}
defer iplocsDB.Close()
// start Server
if flagServer {
http.HandleFunc("/", logPanic(rootHandler))
serv := &http.Server{
Addr: ServerAddr,
Handler: nil,
ReadTimeout: 10 * time.Second,
WriteTimeout: 10 * time.Second,
MaxHeaderBytes: 1 << 16,
}
log.Println("Server starts at", ServerAddr)
log.Fatal(serv.ListenAndServe())
}
// Testlauf
log.Println("Start DB-Test: loading ipBloom & locsBloom")
st := time.Now()
iplocsDB.View(func(tx *bolt.Tx) error {
locsBuck := tx.Bucket([]byte("locations"))
bf := locsBuck.Get([]byte("bloom"))
locsBloom = bbloom.JSONUnmarshal(bf)
ipBloomBuck := tx.Bucket([]byte("ipBloom"))
bf = ipBloomBuck.Get([]byte("bloom"))
ipBloom = bbloom.JSONUnmarshal(bf)
return nil
})
fmt.Println("Test successful: Get ipBloom & locsBloom Bloomfilter: ", time.Since(st).Seconds(), "s")
if flagIP2check != "" {
ipList := strings.Split(flagIP2check, `,`)
for _, v := range lookUpIPList(iplocsDB, ipList) {
fmt.Println(v)
}
} else {
log.Println("Start DB testrun: locating 77.22.%v.119 for %v=0..255")
var i, n, tmingsLocs, timingsCityID int64
iplocsDB.View(func(tx *bolt.Tx) error {
locsBuck := tx.Bucket([]byte("locations"))
for i = 0; i < 255; i++ {
st := time.Now()
cityID, geoData := lookUpCityID(iplocsDB, fmt.Sprintf("77.22.%v.119", i))
timingsCityID += time.Since(st).Nanoseconds()
if cityID != nil {
st = time.Now()
city := locsBuck.Get(cityID)
fmt.Println(string(city), string(geoData[0]), string(geoData[1]))
tmingsLocs += time.Since(st).Nanoseconds()
n++
}
}
return nil
})
fmt.Println("get CityIDs: ", timingsCityID/250, "ns/op")
fmt.Println("get ipLocsInfo: ", tmingsLocs/n, "ns/op")
log.Println("DB testrun was successful")
}
}
// unzip func right after the testing proc from archive/zip
func unzip(src, dest string) error {
r, err := zip.OpenReader(src)
if err != nil {
return err
}
defer r.Close()
for _, f := range r.File {
rc, err := f.Open()
if err != nil {
return err
}
defer rc.Close()
fpath := filepath.Join(dest, f.Name)
// log.Println(f.Name)
if f.FileInfo().IsDir() {
os.MkdirAll(fpath, 0755)
} else {
var fdir string
if lastIndex := strings.LastIndex(fpath, string(os.PathSeparator)); lastIndex > -1 {
fdir = fpath[:lastIndex]
}
err = os.MkdirAll(fdir, 0755)
if err != nil {
log.Fatal(err)
return err
}
f, err := os.OpenFile(
fpath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, f.Mode())
if err != nil {
return err
}
defer f.Close()
_, err = io.Copy(f, rc)
if err != nil {
return err
}
}
}
return nil
}
type ipInfo struct {
Ip string
IpLoc string
}
// implement basic server for JSON or plain-text results
func rootHandler(w http.ResponseWriter, r *http.Request) {
req := strings.Split(r.RequestURI, `/`)
ipList := strings.Split(req[len(req)-1], `,`)
log.Println(r.RemoteAddr[:len(r.RemoteAddr)-9], len(ipList))
if len(req) == 3 {
flagJSON = true
outJSON := "{ "
for _, v := range lookUpIPList(iplocsDB, ipList) {
outJSON += v + ","
}
outJSON = outJSON[:len(outJSON)-1] + " }"
switch req[1] {
case "json":
w.Header().Set(
"Content-Type",
"text/json; charset=utf-8",
)
w.Header().Set(
"Access-Control-Allow-Origin",
"*",
)
w.Write([]byte(outJSON))
break
default:
w.Header().Set(
"Content-Type",
"text/javascript; charset=utf-8",
)
w.Write([]byte(req[1] + "(" + outJSON + ")"))
}
} else {
flagJSON = false
if req[len(req)-1] == "index.html" || req[len(req)-1] == "" {
if infoTempl, err := template.New("index").Parse(infoHTML); err != nil {
log.Fatalln(err)
} else {
if iploc := lookUpIPList(iplocsDB, []string{"77.22.56.119"}); len(iploc) > 0 {
infoTempl.Execute(w, &ipInfo{
Ip: "77.22.56.119",
IpLoc: iploc["77.22.56.119"],
})
}
}
} else if req[len(req)-1] == "eTL.png" {
http.ServeFile(w, r, "eTL.png")
} else {
w.Header().Set(
"Content-Type",
"text/plain; charset=utf-8",
)
for k, v := range lookUpIPList(iplocsDB, ipList) {
w.Write([]byte(k + ": " + v + "\t"))
}
}
}
}
// lookUpIPList
// takes pointer to current database & ipList []string
// returns geoLocs map[string]string
// with geoLocs["ip"]=Cityname (Country- Region)
func lookUpIPList(db *bolt.DB, ipList []string) (geoLocs map[string]string) {
geoLocs = make(map[string]string)
st := time.Now()
db.View(func(tx *bolt.Tx) error {
locsBuck := tx.Bucket([]byte("locations"))
for _, ip := range ipList {
if _, valid := geoLocs[ip]; valid == false {
cityID, geoData := lookUpCityID(db, ip)
if cityID != nil && geoData[0] != nil && geoData[1] != nil {
city := locsBuck.Get(cityID)
if city != nil {
geoLocs[ip] = string(city)
if flagJSON {
// replace with JSON string
geoLocs[ip] = "\"" + ip + "\":" + "{\"city\":\"" + string(city) + "\",\"geoLoc\":[" + string(geoData[0]) + "," + string(geoData[1]) + "]}"
}
}
// }
}
}
}
return nil
})
// comment out / modify following line, if you don't want timing logs
fmt.Printf("LookUp %v IPs took mean %0.6f s/op\n", len(geoLocs), time.Since(st).Seconds()/float64(len(geoLocs)))
return geoLocs
}
// lookUpCityID
// takes pointer to current database and IP (string) to search for
// returns the cityId and geoData = [longitude, latitude]
func lookUpCityID(db *bolt.DB, s string) (cityID []byte, geoData [][]byte) {
var info []string
err := db.View(func(tx *bolt.Tx) error {
findIP := net.ParseIP(s)
if findIP == nil {
return nil
}
ipBuck := []byte{findIP[12]}
if ipBuck == nil {
fmt.Println("no ipBuck")
return nil
}
ipBucket := tx.Bucket(ipBuck)
if ipBucket == nil {
fmt.Println("bucket", ipBuck, "does not exist")
return nil
}
ipBucketCursor := ipBucket.Cursor()
// ip3prefix := []byte(fmt.Sprintf("::ffff:%v.%v.%v.", findIP[12], findIP[13], findIP[14]))
ip3prefix := []byte(fmt.Sprintf("%v.%v.%v.", findIP[12], findIP[13], findIP[14]))
// ip2prefix := []byte(fmt.Sprintf("::ffff:%v.%v.", findIP[12], findIP[13]))
ip2prefix := []byte(fmt.Sprintf("%v.%v.", findIP[12], findIP[13]))
doneCIDRBloom := bbloom.New(65536, 0.01)
if ipBloom.Has(ip3prefix) {
for k, v := ipBucketCursor.Seek(ip3prefix); bytes.HasPrefix(k, ip3prefix); k, v = ipBucketCursor.Next() {
_, IPMask, err := net.ParseCIDR(string(k))
if err != nil {
log.Fatal(err)
}
if IPMask.Contains(findIP) {
// fmt.Println(1, strings.Split(string(v), `,`))
info = strings.Split(string(v), `,`)
// geoData = append(geoData, []byte(info[4]), []byte(info[5]))
geoData = append(geoData, []byte(info[6]), []byte(info[7]))
cityID = []byte(info[0])
return nil
}
doneCIDRBloom.Add(k)
}
}
if ipBloom.Has(ip2prefix) {
for k, v := ipBucketCursor.Seek(ip2prefix); bytes.HasPrefix(k, ip2prefix); k, v = ipBucketCursor.Next() {
if !doneCIDRBloom.Has(k) {
_, IPMask, err := net.ParseCIDR(string(k))
if err != nil {
log.Fatal(err)
}
if IPMask.Contains(findIP) {
// fmt.Println(2, strings.Split(string(v), `,`))
info = strings.Split(string(v), `,`)
// geoData = append(geoData, []byte(info[4]), []byte(info[5]))
geoData = append(geoData, []byte(info[6]), []byte(info[7]))
cityID = []byte(info[0])
return nil
}
doneCIDRBloom.Add(k)
}
}
}
for k, v := ipBucketCursor.First(); k != nil; k, v = ipBucketCursor.Next() {
if !doneCIDRBloom.Has(k) {
_, IPMask, err := net.ParseCIDR(string(k))
if err != nil {
log.Fatal(err)
}
if IPMask.Contains(findIP) {
// fmt.Println(3, strings.Split(string(v), `,`))
info = strings.Split(string(v), `,`)
// geoData = append(geoData, []byte(info[4]), []byte(info[5]))
geoData = append(geoData, []byte(info[6]), []byte(info[7]))
cityID = []byte(info[0])
return nil
}
}
}
return nil
})
if err != nil {
log.Fatal(err)
}
return cityID, geoData
}
// makeDatabase
// takes database
// return error != nil if not successful
// renews all database entries and bloom filters
func makeDatabase(db *bolt.DB) (dbErr error) {
cityLocsFle, err := os.Open("GeoLite2-City-Locations.csv")
if err != nil {
log.Fatal("open cityLocsFle ", err)
}
defer cityLocsFle.Close()
reader := csv.NewReader(cityLocsFle)
// fmt.Println(reader.Read())
reader.Read() // discard first line
if err != nil {
log.Fatal("Reading GeoLite2-City-Locations.csv failed ", err)
}
err = db.Update(func(tx *bolt.Tx) error {
locsBuck, err := tx.CreateBucketIfNotExists([]byte("locations"))
if err != nil {
log.Fatal(err)
}
bf := locsBuck.Get([]byte("bloom"))
if bf == nil {
locsBloom = bbloom.New(100000.0, 0.001)
} else {
locsBloom = bbloom.JSONUnmarshal(bf)
}
for {
data, err := reader.Read()
if err != nil || data == nil {
break
}
location_id := []byte(data[0])
if !locsBloom.Has(location_id) {
// locsBuck.Put(location_id, []byte(data[7]+" ("+data[3]+"-"+data[6]+")"))
locsBuck.Put(location_id, []byte(data[10]+" ("+data[4]+"-"+data[7]+")"))
locsBloom.Add(location_id)
}
}
locsBuck.Put([]byte("bloom"), locsBloom.JSONMarshal())
return nil
})
if err != nil {
log.Fatal("buck location not filled ", err)
}
// City IPs 2817396
cityIPsFle, err := os.Open("GeoLite2-City-Blocks.csv")
if err != nil {
log.Fatal("open cityIPsFle ", err)
}
defer cityIPsFle.Close()
reader = csv.NewReader(cityIPsFle)
// fmt.Println(reader.Read())
reader.Read() // discard first line
ipBloom = bbloom.New(5634792.0, 0.001)
err = db.Update(func(tx *bolt.Tx) error {
for {
data, err := reader.Read()
if err != nil || data == nil {
break
}
// removed for 2015th new maxmind database format
// if len(data[0]) < 2 || data[0][0:2] != "::" {
// continue
// }
// ipBuck, err := strconv.ParseUint(strings.Split(data[0][7:], `.`)[0], 10, 8)
ipBuck, err := strconv.ParseUint(strings.Split(data[0], `.`)[0], 10, 8)
if err != nil {
log.Fatal(err)
}
ipBucket, err := tx.CreateBucketIfNotExists([]byte{byte(ipBuck)})
if err != nil {
log.Fatal(err)
}
// ipMask := []byte(data[0] + "/" + data[1])
ipMask := []byte(data[0])
//ipBucket.Put(ipMask, []byte(strings.Join(data[2:], ",")))
ipBucket.Put(ipMask, []byte(strings.Join(data[1:], ",")))
ip3prefix := []byte(strings.Join(strings.SplitAfterN(data[0], `.`, 4)[0:3], ``))
ipBloom.Add(ip3prefix)
ip2prefix := []byte(strings.Join(strings.SplitAfterN(data[0], `.`, 4)[0:2], ``))
ipBloom.Add(ip2prefix)
}
ipBloomBuck, err := tx.CreateBucketIfNotExists([]byte("ipBloom"))
if err != nil {
log.Fatal("create ipBloom-Bucket ", err)
}
ipBloomBuck.Put([]byte("bloom"), ipBloom.JSONMarshal())
return nil
})
if err != nil {
log.Fatal("ipLocs not prepared ", err)
}
return nil
}