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client.go
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client.go
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package rdap
import (
"encoding/json"
"fmt"
"net"
"net/http"
"net/url"
"regexp"
"strconv"
"strings"
"github.com/registrobr/rdap/protocol"
"golang.org/x/net/idna"
)
var (
fqdnRX = regexp.MustCompile(`^((([a-z0-9][a-z0-9\-]*[a-z0-9])|[a-z0-9]+)\.)*([a-z]+|xn\-\-[a-z0-9]+)\.?$`)
)
// Client is responsible for building, sending the request and parsing the
// result. It can set the URIs attribute if you want to query RDAP servers
// directly without using bootstrap
type Client struct {
// Transport is the network layer that you can fill with a direct query to
// the RDAP servers or with an extra layer of RDAP bootstrap strategy
Transport Fetcher
// URIs store the addresses of the RDAP servers that you want to query
// directly. Remember that if you use a bootstrap transport layer this
// information might not be used
URIs []string
}
// NewClient is an easy way to create a client with bootstrap support or not,
// depending if you inform direct RDAP addresses
func NewClient(URIs []string) *Client {
client := Client{
URIs: URIs,
}
var httpClient http.Client
if len(URIs) == 0 {
client.Transport = NewBootstrapFetcher(&httpClient, IANABootstrap, nil)
} else {
client.Transport = NewDefaultFetcher(&httpClient)
}
return &client
}
// Domain will query each RDAP server to retrieve the desired information and
// will parse and store the response into a protocol Domain object. You can
// optionally define the HTTP headers parameters to send to the RDAP server. If
// something goes wrong an error will be returned, and if nothing is found
// the error ErrNotFound will be returned. The HTTP header of the RDAP
// response is also returned to analyze any specific flag
func (c *Client) Domain(fqdn string, header http.Header, queryString url.Values) (*protocol.Domain, http.Header, error) {
fqdn, err := idna.ToASCII(strings.ToLower(fqdn))
if err != nil {
return nil, nil, err
}
resp, err := c.Transport.Fetch(c.URIs, QueryTypeDomain, fqdn, header, queryString)
defer func() {
if resp != nil && resp.Body != nil {
resp.Body.Close()
}
}()
if err != nil {
if resp != nil {
return nil, resp.Header, err
}
return nil, nil, err
}
domain := &protocol.Domain{}
if err = json.NewDecoder(resp.Body).Decode(domain); err != nil {
return nil, resp.Header, err
}
return domain, resp.Header, nil
}
// Ticket will query each RDAP server to retrieve the desired information and
// will parse and store the response into a protocol Domain object. You can
// optionally define the HTTP headers parameters to send to the RDAP server. If
// something goes wrong an error will be returned, and if nothing is found
// the error ErrNotFound will be returned. The HTTP header of the RDAP
// response is also returned to analyze any specific flag
func (c *Client) Ticket(ticketNumber int, header http.Header, queryString url.Values) (*protocol.Domain, http.Header, error) {
resp, err := c.Transport.Fetch(c.URIs, QueryTypeTicket, strconv.Itoa(ticketNumber), header, queryString)
defer func() {
if resp != nil && resp.Body != nil {
resp.Body.Close()
}
}()
if err != nil {
if resp != nil {
return nil, resp.Header, err
}
return nil, nil, err
}
domain := &protocol.Domain{}
if err = json.NewDecoder(resp.Body).Decode(domain); err != nil {
return nil, resp.Header, err
}
return domain, resp.Header, nil
}
// ASN will query each RDAP server to retrieve the desired information and
// will parse and store the response into a protocol AS object. You can
// optionally define the HTTP headers parameters to send to the RDAP server.
// If something goes wrong an error will be returned, and if nothing is found
// the error ErrNotFound will be returned. The HTTP header of the RDAP
// response is also returned to analyze any specific flag
func (c *Client) ASN(asn uint32, header http.Header, queryString url.Values) (*protocol.AS, http.Header, error) {
asnStr := strconv.FormatUint(uint64(asn), 10)
resp, err := c.Transport.Fetch(c.URIs, QueryTypeAutnum, asnStr, header, queryString)
defer func() {
if resp != nil && resp.Body != nil {
resp.Body.Close()
}
}()
if err != nil {
if resp != nil {
return nil, resp.Header, err
}
return nil, nil, err
}
as := &protocol.AS{}
if err = json.NewDecoder(resp.Body).Decode(as); err != nil {
return nil, resp.Header, err
}
return as, resp.Header, nil
}
// Entity will query each RDAP server to retrieve the desired information and
// will parse and store the response into a protocol Entity object. You can
// optionally define the HTTP headers parameters to send to the RDAP server.
// If something goes wrong an error will be returned, and if nothing is found
// the error ErrNotFound will be returned. The HTTP header of the RDAP
// response is also returned to analyze any specific flag
func (c *Client) Entity(identifier string, header http.Header, queryString url.Values) (*protocol.Entity, http.Header, error) {
resp, err := c.Transport.Fetch(c.URIs, QueryTypeEntity, identifier, header, queryString)
defer func() {
if resp != nil && resp.Body != nil {
resp.Body.Close()
}
}()
if err != nil {
if resp != nil {
return nil, resp.Header, err
}
return nil, nil, err
}
entity := &protocol.Entity{}
if err = json.NewDecoder(resp.Body).Decode(entity); err != nil {
return nil, resp.Header, err
}
return entity, resp.Header, nil
}
// IPNetwork will query each RDAP server to retrieve the desired information and
// will parse and store the response into a protocol IPNetwork object. You can
// optionally define the HTTP headers parameters to send to the RDAP server.
// If something goes wrong an error will be returned, and if nothing is found
// the error ErrNotFound will be returned. The HTTP header of the RDAP
// response is also returned to analyze any specific flag
func (c *Client) IPNetwork(ipnet *net.IPNet, header http.Header, queryString url.Values) (*protocol.IPNetwork, http.Header, error) {
if ipnet == nil {
return nil, nil, fmt.Errorf("undefined IP network")
}
resp, err := c.Transport.Fetch(c.URIs, QueryTypeIP, ipnet.String(), header, queryString)
defer func() {
if resp != nil && resp.Body != nil {
resp.Body.Close()
}
}()
if err != nil {
if resp != nil {
return nil, resp.Header, err
}
return nil, nil, err
}
ipNetwork := &protocol.IPNetwork{}
if err = json.NewDecoder(resp.Body).Decode(ipNetwork); err != nil {
return nil, resp.Header, err
}
return ipNetwork, resp.Header, nil
}
// IP will query each RDAP server to retrieve the desired information and
// will parse and store the response into a protocol IP object. You can
// optionally define the HTTP headers parameters to send to the RDAP server.
// If something goes wrong an error will be returned, and if nothing is found
// the error ErrNotFound will be returned. The HTTP header of the RDAP
// response is also returned to analyze any specific flag
func (c *Client) IP(ip net.IP, header http.Header, queryString url.Values) (*protocol.IPNetwork, http.Header, error) {
if ip == nil {
return nil, nil, fmt.Errorf("undefined IP")
}
resp, err := c.Transport.Fetch(c.URIs, QueryTypeIP, ip.String(), header, queryString)
defer func() {
if resp != nil && resp.Body != nil {
resp.Body.Close()
}
}()
if err != nil {
if resp != nil {
return nil, resp.Header, err
}
return nil, nil, err
}
ipNetwork := &protocol.IPNetwork{}
if err = json.NewDecoder(resp.Body).Decode(ipNetwork); err != nil {
return nil, resp.Header, err
}
return ipNetwork, resp.Header, nil
}
// Query will try to search the object in the following order: ASN, IP, IP
// network, domain and entity. If the format is not valid for the specific
// search, the search is ignored. The HTTP header of the RDAP
// response is also returned to analyze any specific flag
func (c *Client) Query(object string, header http.Header, queryString url.Values) (interface{}, http.Header, error) {
if asn, err := strconv.ParseUint(object, 10, 32); err == nil {
return c.ASN(uint32(asn), header, queryString)
}
if ip := net.ParseIP(object); ip != nil {
return c.IP(ip, header, queryString)
}
if _, ipnetwork, err := net.ParseCIDR(object); err == nil {
return c.IPNetwork(ipnetwork, header, queryString)
}
fqdn, err := idna.ToASCII(strings.ToLower(object))
if err == nil && fqdnRX.MatchString(fqdn) {
return c.Domain(fqdn, header, queryString)
}
return c.Entity(object, header, queryString)
}