From 042b703fe487f5ade99ed42f82b3653e400217e5 Mon Sep 17 00:00:00 2001
From: Jakob Borg <jakob@nym.se>
Date: Tue, 19 Jan 2016 09:49:41 -0800
Subject: [PATCH 1/2] Templatize Debian files

---
 build.go         | 47 ++++++++++++++++++++++-------------------------
 debian/changelog |  5 +++++
 debian/compat    |  1 +
 debian/control   |  8 ++++++++
 4 files changed, 36 insertions(+), 25 deletions(-)
 create mode 100644 debian/changelog
 create mode 100644 debian/compat
 create mode 100644 debian/control

diff --git a/build.go b/build.go
index a7d64458..b2166b3a 100644
--- a/build.go
+++ b/build.go
@@ -26,6 +26,7 @@ import (
 	"runtime"
 	"strconv"
 	"strings"
+	"text/template"
 	"time"
 )
 
@@ -331,33 +332,29 @@ func buildDeb() {
 		}
 	}
 
-	control := `Package: syncthing
-Architecture: {{arch}}
-Depends: libc6
-Version: {{version}}
-Maintainer: Syncthing Release Management <release@syncthing.net>
-Description: Open Source Continuous File Synchronization
-	Syncthing does bidirectional synchronization of files between two or
-	more computers.
-`
-	changelog := `syncthing ({{version}}); urgency=medium
-
-  * Packaging of {{version}}.
-
- -- Jakob Borg <jakob@nym.se>  {{date}}
-`
-
-	control = strings.Replace(control, "{{arch}}", debarch, -1)
-	control = strings.Replace(control, "{{version}}", version[1:], -1)
-	changelog = strings.Replace(changelog, "{{arch}}", debarch, -1)
-	changelog = strings.Replace(changelog, "{{version}}", version[1:], -1)
-	changelog = strings.Replace(changelog, "{{date}}", time.Now().Format(time.RFC1123), -1)
-
 	os.MkdirAll("deb/DEBIAN", 0755)
-	ioutil.WriteFile("deb/DEBIAN/control", []byte(control), 0644)
-	ioutil.WriteFile("deb/DEBIAN/compat", []byte("9\n"), 0644)
-	ioutil.WriteFile("deb/DEBIAN/changelog", []byte(changelog), 0644)
 
+	data := map[string]string{
+		"arch":    debarch,
+		"version": version[1:],
+		"date":    time.Now().Format(time.RFC1123),
+	}
+	for _, file := range listFiles("debian") {
+		tpl, err := template.New(filepath.Base(file)).ParseFiles(file)
+		if err != nil {
+			log.Fatal(err)
+		}
+		out, err := os.Create(filepath.Join("deb/DEBIAN", filepath.Base(file)))
+		if err != nil {
+			log.Fatal(err)
+		}
+		if err := tpl.Execute(out, data); err != nil {
+			log.Fatal(err)
+		}
+		if err := out.Close(); err != nil {
+			log.Fatal(err)
+		}
+	}
 }
 
 func copyFile(src, dst string, perm os.FileMode) error {
diff --git a/debian/changelog b/debian/changelog
new file mode 100644
index 00000000..49b74501
--- /dev/null
+++ b/debian/changelog
@@ -0,0 +1,5 @@
+syncthing ({{.version}}); urgency=medium
+
+  * Packaging of {{.version}}.
+
+ -- Syncthing Release Management <release@syncthing.net>  {{.date}}
diff --git a/debian/compat b/debian/compat
new file mode 100644
index 00000000..ec635144
--- /dev/null
+++ b/debian/compat
@@ -0,0 +1 @@
+9
diff --git a/debian/control b/debian/control
new file mode 100644
index 00000000..bdd8bc6e
--- /dev/null
+++ b/debian/control
@@ -0,0 +1,8 @@
+Package: syncthing
+Architecture: {{.arch}}
+Depends: libc6, procps
+Version: {{.version}}
+Maintainer: Syncthing Release Management <release@syncthing.net>
+Description: Open Source Continuous File Synchronization
+	Syncthing does bidirectional synchronization of files between two or
+	more computers.

From 99372c69e552170c74e2b4460c441c1ed9341d3d Mon Sep 17 00:00:00 2001
From: Jakob Borg <jakob@nym.se>
Date: Tue, 19 Jan 2016 09:54:47 -0800
Subject: [PATCH 2/2] Add postinst script to restart after upgrade

---
 build.go        | 5 ++++-
 debian/postinst | 6 ++++++
 2 files changed, 10 insertions(+), 1 deletion(-)
 create mode 100755 debian/postinst

diff --git a/build.go b/build.go
index b2166b3a..265172f1 100644
--- a/build.go
+++ b/build.go
@@ -344,7 +344,8 @@ func buildDeb() {
 		if err != nil {
 			log.Fatal(err)
 		}
-		out, err := os.Create(filepath.Join("deb/DEBIAN", filepath.Base(file)))
+		outFile := filepath.Join("deb/DEBIAN", filepath.Base(file))
+		out, err := os.Create(outFile)
 		if err != nil {
 			log.Fatal(err)
 		}
@@ -354,6 +355,8 @@ func buildDeb() {
 		if err := out.Close(); err != nil {
 			log.Fatal(err)
 		}
+		info, _ := os.Lstat(file)
+		os.Chmod(outFile, info.Mode())
 	}
 }
 
diff --git a/debian/postinst b/debian/postinst
new file mode 100755
index 00000000..0289794c
--- /dev/null
+++ b/debian/postinst
@@ -0,0 +1,6 @@
+#!/bin/bash
+set -euo pipefail
+
+if [[ ${1:-} == configure ]]; then
+	pkill -x -HUP syncthing || true
+fi