1 files changed, 41 insertions, 0 deletions
diff --git a/deprecated-webircgateway/pkg/webircgateway/letsencrypt.go b/deprecated-webircgateway/pkg/webircgateway/letsencrypt.go
new file mode 100644
index 0000000..ffa6afe
--- /dev/null
+++ b/deprecated-webircgateway/pkg/webircgateway/letsencrypt.go
@@ -0,0 +1,41 @@
+package webircgateway
+
+import (
+	"context"
+	"strings"
+	"sync"
+
+	"golang.org/x/crypto/acme/autocert"
+)
+
+type LEManager struct {
+	// ensure only one instance of the manager and handler is running
+	// while allowing multiple listeners to use it
+	Mutex   sync.Mutex
+	Manager *autocert.Manager
+	gateway *Gateway
+}
+
+func NewLetsEncryptManager(gateway *Gateway) *LEManager {
+	return &LEManager{gateway: gateway}
+}
+
+func (le *LEManager) Get(certCacheDir string) *autocert.Manager {
+	le.Mutex.Lock()
+	defer le.Mutex.Unlock()
+
+	// Create it if it doesn't already exist
+	if le.Manager == nil {
+		le.Manager = &autocert.Manager{
+			Prompt: autocert.AcceptTOS,
+			Cache:  autocert.DirCache(strings.TrimRight(certCacheDir, "/")),
+			HostPolicy: func(ctx context.Context, host string) error {
+				le.gateway.Log(2, "Automatically requesting a HTTPS certificate for %s", host)
+				return nil
+			},
+		}
+		le.gateway.HttpRouter.Handle("/.well-known/", le.Manager.HTTPHandler(nil))
+	}
+
+	return le.Manager
+}