core: Windows service integration (#4790)

Co-authored-by: Matthew Holt <mholt@users.noreply.github.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/service_windows.go b/service_windows.go
new file mode 100644
index 0000000..7590fc3
--- /dev/null
+++ b/service_windows.go
@@ -0,0 +1,49 @@
+// Copyright 2015 Matthew Holt and The Caddy Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package caddy
+
+import (
+	"github.com/caddyserver/caddy/v2/notify"
+	"golang.org/x/sys/windows/svc"
+)
+
+func init() {
+	isService, err := svc.IsWindowsService()
+	if err != nil || isService {
+		return
+	}
+	go func() {
+		_ = svc.Run("", runner{})
+	}()
+}
+
+type runner struct{}
+
+func (runner) Execute(args []string, request <-chan svc.ChangeRequest, status chan<- svc.Status) (bool, uint32) {
+	notify.SetGlobalStatus(status)
+	status <- svc.Status{State: svc.StartPending}
+
+	for {
+		req := <-request
+		switch req.Cmd {
+		case svc.Interrogate:
+			status <- req.CurrentStatus
+		case svc.Stop, svc.Shutdown:
+			status <- svc.Status{State: svc.StopPending}
+			exitProcessFromSignal("SIGINT")
+			return false, 0
+		}
+	}
+}