ooni-probe-cli/internal/cmd/jafar/uncensored/uncensored.go
Simone Basso ce052b665e
feat(netxlite): implements NS queries (#734)
This diff has been extracted from eb0bf38957.

See https://github.com/ooni/probe/issues/2096.

While there, skip the broken tests caused by issue
https://github.com/ooni/probe/issues/2098.
2022-05-16 10:46:53 +02:00

99 lines
2.8 KiB
Go

// Package uncensored contains code used by Jafar to evade its own
// censorship efforts by taking alternate routes.
package uncensored
import (
"context"
"errors"
"net"
"net/http"
"github.com/apex/log"
"github.com/ooni/probe-cli/v3/internal/engine/experiment/urlgetter"
"github.com/ooni/probe-cli/v3/internal/engine/netx"
"github.com/ooni/probe-cli/v3/internal/model"
"github.com/ooni/probe-cli/v3/internal/runtimex"
)
// Client is DNS, HTTP, and TCP client.
type Client struct {
dnsClient model.Resolver
httpTransport model.HTTPTransport
dialer model.Dialer
}
// NewClient creates a new Client.
func NewClient(resolverURL string) (*Client, error) {
configuration, err := urlgetter.Configurer{
Config: urlgetter.Config{
ResolverURL: resolverURL,
},
Logger: log.Log,
}.NewConfiguration()
if err != nil {
return nil, err
}
return &Client{
dnsClient: configuration.DNSClient,
httpTransport: netx.NewHTTPTransport(configuration.HTTPConfig),
dialer: netx.NewDialer(configuration.HTTPConfig),
}, nil
}
// Must panics if it's not possible to create a Client. Usually you should
// use it like `uncensored.Must(uncensored.NewClient(URL))`.
func Must(client *Client, err error) *Client {
runtimex.PanicOnError(err, "cannot create uncensored client")
return client
}
// DefaultClient is the default client for DNS, HTTP, and TCP.
var DefaultClient = Must(NewClient(""))
var _ model.Resolver = DefaultClient
// Address implements Resolver.Address
func (c *Client) Address() string {
return c.dnsClient.Address()
}
// LookupHost implements Resolver.LookupHost
func (c *Client) LookupHost(ctx context.Context, domain string) ([]string, error) {
return c.dnsClient.LookupHost(ctx, domain)
}
// LookupHTTPS implements model.Resolver.LookupHTTPS.
func (c *Client) LookupHTTPS(ctx context.Context, domain string) (*model.HTTPSSvc, error) {
return nil, errors.New("not implemented")
}
// LookupNS implements model.Resolver.LookupNS.
func (c *Client) LookupNS(ctx context.Context, domain string) ([]*net.NS, error) {
return nil, errors.New("not implemented")
}
// Network implements Resolver.Network
func (c *Client) Network() string {
return c.dnsClient.Network()
}
var _ model.Dialer = DefaultClient
// DialContext implements Dialer.DialContext
func (c *Client) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
return c.dialer.DialContext(ctx, network, address)
}
var _ model.HTTPTransport = DefaultClient
// CloseIdleConnections implement HTTPRoundTripper.CloseIdleConnections
func (c *Client) CloseIdleConnections() {
c.dnsClient.CloseIdleConnections()
c.httpTransport.CloseIdleConnections()
}
// RoundTrip implement HTTPRoundTripper.RoundTrip
func (c *Client) RoundTrip(req *http.Request) (*http.Response, error) {
return c.httpTransport.RoundTrip(req)
}