From cb667e2472867666fe1d87059e00078797e182f6 Mon Sep 17 00:00:00 2001
From: Elena Balakhonova <balakhonova@rnd.stcnet.ru>
Date: Tue, 3 Dec 2019 16:12:12 +0300
Subject: [PATCH] Refresh -passwd file while working

---
 README      | 7 +++++++
 gocheese.go | 9 +++++++++
 2 files changed, 16 insertions(+)

diff --git a/README b/README
index 555b19b..d128489 100644
--- a/README
+++ b/README
@@ -63,6 +63,13 @@ hashed passwords:
     foo:$sha256$fcde2b2edba56bf408601fb721fe9b5c338d10ee429ea04fae5511b68fbf8fb9
     foo:$argon2i$v=19$m=32768,t=3,p=4$OGU5MTM3YjVlYzQwZjhkZA$rVn53v6Ckpf7WH0676ZQLr9Hbm6VH3YnL6I9ONJcIIU
 
+While daemon working you can refresh -passwd file with SIGHUP:
+
+    $ kill -HUP `pidof gocheese`
+
+Before refreshing it's recommended to check -passwd file with -passwd-check
+option to prevent daemon failure
+
                          On-disk storage format
                          ======================
 
diff --git a/gocheese.go b/gocheese.go
index 6ca3ad5..fa3b430 100644
--- a/gocheese.go
+++ b/gocheese.go
@@ -31,10 +31,12 @@ import (
 	"net/http"
 	"net/url"
 	"os"
+	"os/signal"
 	"path/filepath"
 	"regexp"
 	"runtime"
 	"strings"
+	"syscall"
 )
 
 const (
@@ -462,6 +464,13 @@ func main() {
 	}
 	refreshPasswd()
 	log.Println("root:", *root, "bind:", *bind)
+	needsRefreshPasswd := make(chan os.Signal, 0)
+	signal.Notify(needsRefreshPasswd, syscall.SIGHUP)
+	go func() {
+		for range needsRefreshPasswd {
+			refreshPasswd()
+		}
+	}()
 	http.HandleFunc(*norefreshURLPath, handler)
 	http.HandleFunc(*refreshURLPath, handler)
 	log.Fatal(http.ListenAndServe(*bind, nil))
-- 
2.44.0