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add support for asn network range #129

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add support for asn network range #129

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13 changes: 8 additions & 5 deletions reader.go
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Original file line number Diff line number Diff line change
Expand Up @@ -183,6 +183,7 @@ type AnonymousIP struct {

// The ASN struct corresponds to the data in the GeoLite2 ASN database.
type ASN struct {
Network string
AutonomousSystemOrganization string `maxminddb:"autonomous_system_organization"`
AutonomousSystemNumber uint `maxminddb:"autonomous_system_number"`
}
Expand Down Expand Up @@ -366,12 +367,14 @@ func (r *Reader) AnonymousIP(ipAddress net.IP) (*AnonymousIP, error) {
// ASN takes an IP address as a net.IP struct and returns a ASN struct and/or
// an error.
func (r *Reader) ASN(ipAddress net.IP) (*ASN, error) {
if isASN&r.databaseType == 0 {
return nil, InvalidMethodError{"ASN", r.Metadata().DatabaseType}
var asn ASN
network, _, err := r.mmdbReader.LookupNetwork(ipAddress, &asn)
if err != nil {
return nil, err
}
var val ASN
err := r.mmdbReader.Lookup(ipAddress, &val)
return &val, err
mask, _ := network.Mask.Size()
asn.Network = fmt.Sprintf("%s/%d", network.IP.String(), mask)
return &asn, nil
}

// ConnectionType takes an IP address as a net.IP struct and returns a
Expand Down