Automate /var/lib/ceres creation

That way only the system user setup and ownership change has to be done
by the packager / installer.

3 files changed, 13 insertions, 5 deletions

diff --git a/Makefile b/Makefile
index 944bdee..92507ae 100644
--- a/Makefile
+++ b/Makefile
@@ -24,6 +24,8 @@ install: all
 	install -Dm 644 data/templates/head.html $(DESTDIR)$(PREFIX)/share/ceres/templates/head.html
 	install -Dm 644 data/templates/recipe_confirm_deletion.html $(DESTDIR)$(PREFIX)/share/ceres/templates/recipe_confirm_deletion.html
 	install -Dm 644 data/templates/recipe.html $(DESTDIR)$(PREFIX)/share/ceres/templates/recipe.html
+	
+	install -dm 700 $(DESTDIR)/var/lib/ceres
 
 debug:
 	go run *.go -c config/debug.json
diff --git a/README.md b/README.md
index 874e606..c8bc5e8 100644
--- a/README.md
+++ b/README.md
@@ -55,14 +55,14 @@ Make target for installation. Use it for example with a fakeroot:
 	tree fakeroot
 ```
 
-Please add a service unit for the init system of your distribution. Furthermore
-create the data directory where all recipes will be stored and set appropriate
-permissions:
+Please add a startup script or service unit for the init system of your
+distribution. Furthermore create a system user to run the server and grant him
+ownership to the data directory specified in the configuration file (default is
+`/var/lib/ceres`):
 
 ```
-    mkdir /var/lib/ceres
+    useradd --system ceres
     chown ceres:ceres /var/lib/ceres
-    chmod 700 /var/lib/ceres
 ```
 
 If you want to install Ceres to your system, it is recommended to first do the
diff --git a/main.go b/main.go
index 3cf6fa7..5f86d3d 100644
--- a/main.go
+++ b/main.go
@@ -2,6 +2,8 @@ package main
 
 import (
 	"log"
+	"os"
+	"path/filepath"
 	"text/template"
 )
 
@@ -11,6 +13,10 @@ var templates *template.Template
 func main() {
 	log.Printf("Started Ceres recipe server.\n")
 	config = GetRuntimeConfig()
+	err := os.Mkdir(filepath.Join(config.Data, "recipes"), 0750)
+	if err != nil && !os.IsExist(err) {
+		log.Fatal(err)
+	}
 	templates = setupTemplates()
 	runServer()
 }