mirror of https://github.com/status-im/op-geth.git
99 lines
3.1 KiB
Go
99 lines
3.1 KiB
Go
// Copyright 2018 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library 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 Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package dashboard
|
|
|
|
import (
|
|
"net"
|
|
"time"
|
|
|
|
"github.com/apilayer/freegeoip"
|
|
)
|
|
|
|
// geoDBInfo contains all the geographical information we could extract based on an IP
|
|
// address.
|
|
type geoDBInfo struct {
|
|
Country struct {
|
|
Names struct {
|
|
English string `maxminddb:"en" json:"en,omitempty"`
|
|
} `maxminddb:"names" json:"names,omitempty"`
|
|
} `maxminddb:"country" json:"country,omitempty"`
|
|
City struct {
|
|
Names struct {
|
|
English string `maxminddb:"en" json:"en,omitempty"`
|
|
} `maxminddb:"names" json:"names,omitempty"`
|
|
} `maxminddb:"city" json:"city,omitempty"`
|
|
Location struct {
|
|
Latitude float64 `maxminddb:"latitude" json:"latitude,omitempty"`
|
|
Longitude float64 `maxminddb:"longitude" json:"longitude,omitempty"`
|
|
} `maxminddb:"location" json:"location,omitempty"`
|
|
}
|
|
|
|
// geoLocation contains geographical information.
|
|
type geoLocation struct {
|
|
Country string `json:"country,omitempty"`
|
|
City string `json:"city,omitempty"`
|
|
Latitude float64 `json:"latitude,omitempty"`
|
|
Longitude float64 `json:"longitude,omitempty"`
|
|
}
|
|
|
|
// geoDB represents a geoip database that can be queried for IP to geographical
|
|
// information conversions.
|
|
type geoDB struct {
|
|
geodb *freegeoip.DB
|
|
}
|
|
|
|
// Open creates a new geoip database with an up-to-date database from the internet.
|
|
func openGeoDB() (*geoDB, error) {
|
|
// Initiate a geoip database to cross reference locations
|
|
db, err := freegeoip.OpenURL(freegeoip.MaxMindDB, 24*time.Hour, time.Hour)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
// Wait until the database is updated to the latest data
|
|
select {
|
|
case <-db.NotifyOpen():
|
|
case err := <-db.NotifyError():
|
|
return nil, err
|
|
}
|
|
// Assemble and return our custom wrapper
|
|
return &geoDB{geodb: db}, nil
|
|
}
|
|
|
|
// Close terminates the database background updater.
|
|
func (db *geoDB) close() error {
|
|
db.geodb.Close()
|
|
return nil
|
|
}
|
|
|
|
// Lookup converts an IP address to a geographical location.
|
|
func (db *geoDB) lookup(ip net.IP) *geoDBInfo {
|
|
result := new(geoDBInfo)
|
|
db.geodb.Lookup(ip, result)
|
|
return result
|
|
}
|
|
|
|
// Location retrieves the geographical location of the given IP address.
|
|
func (db *geoDB) location(ip string) *geoLocation {
|
|
location := db.lookup(net.ParseIP(ip))
|
|
return &geoLocation{
|
|
Country: location.Country.Names.English,
|
|
City: location.City.Names.English,
|
|
Latitude: location.Location.Latitude,
|
|
Longitude: location.Location.Longitude,
|
|
}
|
|
}
|