fix "modifer" -> "modifier" typo everywhere

proxychain/requestmodifiers/resolve_with_google_doh.go

@@ -0,0 +1,94 @@
+package requestmodifiers
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net"
+	"time"
+
+	http "github.com/bogdanfinn/fhttp"
+
+	/*
+		tls_client "github.com/bogdanfinn/tls-client"
+		//"net/http"
+	*/
+
+	"ladder/proxychain"
+)
+
+// resolveWithGoogleDoH resolves DNS using Google's DNS-over-HTTPS
+func resolveWithGoogleDoH(host string) (string, error) {
+	url := "https://dns.google/resolve?name=" + host + "&type=A"
+	resp, err := http.Get(url)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	var result struct {
+		Answer []struct {
+			Data string `json:"data"`
+		} `json:"Answer"`
+	}
+	err = json.NewDecoder(resp.Body).Decode(&result)
+	if err != nil {
+		return "", err
+	}
+
+	// Get the first A record
+	if len(result.Answer) > 0 {
+		return result.Answer[0].Data, nil
+	}
+	return "", fmt.Errorf("no DoH DNS record found for %s", host)
+}
+
+type CustomDialer struct {
+	*net.Dialer
+}
+
+func NewCustomDialer(timeout, keepAlive time.Duration) *CustomDialer {
+	return &CustomDialer{
+		Dialer: &net.Dialer{
+			Timeout:   timeout,
+			KeepAlive: keepAlive,
+		},
+	}
+}
+
+func (cd *CustomDialer) DialContext(ctx context.Context, network, addr string) (net.Conn, error) {
+	host, port, err := net.SplitHostPort(addr)
+	if err != nil {
+		port = "443"
+	}
+
+	resolvedHost, err := resolveWithGoogleDoH(host)
+	if err != nil {
+		return nil, err
+	}
+	return cd.Dialer.DialContext(ctx, network, net.JoinHostPort(resolvedHost, port))
+}
+
+// ResolveWithGoogleDoH modifies a ProxyChain's client to make the request by resolving the URL
+// using Google's DNS over HTTPs service
+func ResolveWithGoogleDoH() proxychain.RequestModification {
+	///customDialer := NewCustomDialer(10*time.Second, 10*time.Second)
+	return func(chain *proxychain.ProxyChain) error {
+		/*
+			options := []tls_client.HttpClientOption{
+				tls_client.WithTimeoutSeconds(30),
+				tls_client.WithRandomTLSExtensionOrder(),
+				tls_client.WithDialer(*customDialer.Dialer),
+				//tls_client.WithClientProfile(profiles.Chrome_105),
+			}
+
+			client, err := tls_client.NewHttpClient(tls_client.NewNoopLogger(), options...)
+			if err != nil {
+				return err
+			}
+
+			chain.SetOnceHTTPClient(client)
+		*/
+		return nil
+	}
+}