51 lines
1.6 KiB
Go
51 lines
1.6 KiB
Go
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// Package geoipx contains code to use the embedded MaxMind-like databases.
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package geoipx
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import (
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"net"
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"github.com/ooni/probe-assets/assets"
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"github.com/ooni/probe-cli/v3/internal/model"
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"github.com/ooni/probe-cli/v3/internal/runtimex"
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"github.com/oschwald/geoip2-golang"
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)
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// TODO(bassosimone): this would be more efficient if we'd open just
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// once the database and then reuse it for every address.
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// LookupASN maps [ip] to an AS number and an AS organization name.
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func LookupASN(ip string) (asn uint, org string, err error) {
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asn, org = model.DefaultProbeASN, model.DefaultProbeNetworkName
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db, err := geoip2.FromBytes(assets.ASNDatabaseData())
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runtimex.PanicOnError(err, "cannot load embedded geoip2 ASN database")
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defer db.Close()
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record, err := db.ASN(net.ParseIP(ip))
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if err != nil {
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return
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}
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asn = record.AutonomousSystemNumber
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if record.AutonomousSystemOrganization != "" {
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org = record.AutonomousSystemOrganization
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}
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return
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}
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// LookupCC maps [ip] to a country code.
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func LookupCC(ip string) (cc string, err error) {
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cc = model.DefaultProbeCC
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db, err := geoip2.FromBytes(assets.CountryDatabaseData())
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runtimex.PanicOnError(err, "cannot load embedded geoip2 country database")
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defer db.Close()
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record, err := db.Country(net.ParseIP(ip))
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if err != nil {
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return
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}
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// With MaxMind DB we used record.RegisteredCountry.IsoCode but that does
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// not seem to work with the db-ip.com database. The record is empty, at
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// least for my own IP address in Italy. --Simone (2020-02-25)
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if record.Country.IsoCode != "" {
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cc = record.Country.IsoCode
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}
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return
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}
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