feat: Waku v2 bridge

Issue #12610

vendor/github.com/anacrolix/missinggo/certdir.go

@@ -0,0 +1,46 @@
+package missinggo
+
+import (
+	"crypto/tls"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+func LoadCertificateDir(dir string) (certs []tls.Certificate, err error) {
+	d, err := os.Open(dir)
+	if err != nil {
+		return
+	}
+	defer d.Close()
+	const defaultPEMFile = "default.pem"
+	if p := filepath.Join(dir, defaultPEMFile); FilePathExists(p) {
+		cert, err := tls.LoadX509KeyPair(p, p)
+		if err == nil {
+			certs = append(certs, cert)
+		} else {
+			log.Printf("error loading default certicate: %s", err)
+		}
+	}
+	files, err := d.Readdir(-1)
+	if err != nil {
+		return
+	}
+	for _, f := range files {
+		if f.Name() == defaultPEMFile {
+			continue
+		}
+		if !strings.HasSuffix(f.Name(), ".pem") {
+			continue
+		}
+		p := filepath.Join(dir, f.Name())
+		cert, err := tls.LoadX509KeyPair(p, p)
+		if err != nil {
+			log.Printf("error loading key pair from %q: %s", p, err)
+			continue
+		}
+		certs = append(certs, cert)
+	}
+	return
+}