Fix SSH server on Windows when running as service

Closes #680

modules/minwinsvc/svc_windows.go

@@ -8,17 +8,22 @@ package minwinsvc
 
 import (
 	"os"
+	"strconv"
 	"sync"
 
 	"golang.org/x/sys/windows/svc"
 )
 
 var (
-	onExit func()
-	guard  sync.Mutex
+	onExit  func()
+	guard   sync.Mutex
+	skip, _ = strconv.ParseBool(os.Getenv("SKIP_MINWINSVC"))
 )
 
 func init() {
+	if skip {
+		return
+	}
 	interactive, err := svc.IsAnInteractiveSession()
 	if err != nil {
 		panic(err)

modules/setting/setting.go

@@ -22,13 +22,14 @@ import (
 
 	"code.gitea.io/git"
 	"code.gitea.io/gitea/modules/log"
+	_ "code.gitea.io/gitea/modules/minwinsvc" // import minwinsvc for windows services
 	"code.gitea.io/gitea/modules/user"
+
 	"github.com/Unknwon/com"
 	_ "github.com/go-macaron/cache/memcache" // memcache plugin for cache
 	_ "github.com/go-macaron/cache/redis"
 	"github.com/go-macaron/session"
 	_ "github.com/go-macaron/session/redis" // redis plugin for store session
-	_ "github.com/kardianos/minwinsvc"      // import minwinsvc for windows services
 	"gopkg.in/ini.v1"
 	"strk.kbt.io/projects/go/libravatar"
 )

modules/ssh/ssh.go

@@ -67,7 +67,11 @@ func handleServerConn(keyID string, chans <-chan ssh.NewChannel) {
 					args := []string{"serv", "key-" + keyID, "--config=" + setting.CustomConf}
 					log.Trace("SSH: Arguments: %v", args)
 					cmd := exec.Command(setting.AppPath, args...)
-					cmd.Env = append(os.Environ(), "SSH_ORIGINAL_COMMAND="+cmdName)
+					cmd.Env = append(
+						os.Environ(),
+						"SSH_ORIGINAL_COMMAND="+cmdName,
+						"SKIP_MINWINSVC=1",
+					)
 
 					stdout, err := cmd.StdoutPipe()
 					if err != nil {