Added tests to the main package and completely reworked the code around that

zabbix/workdir.go

@@ -0,0 +1,38 @@
+package zabbix
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+const (
+	bareosWorkDir = "/var/lib/bareos"
+	baculaWorkDir = "/var/lib/bacula"
+)
+
+var root = "/"
+
+// checkWorkDir checks if a work directory is valid
+func checkWorkDir() error {
+	// Determine the work directory to use.
+	if workDir != "" {
+		workDir = filepath.Join(root, workDir)
+		info, err := os.Stat(workDir)
+		if os.IsNotExist(err) || !info.IsDir() {
+			return fmt.Errorf("Invalid work directory %s : it does not exist or is not a directory", workDir)
+		}
+	} else {
+		workDir = filepath.Join(root, bareosWorkDir)
+		info, err := os.Stat(workDir)
+		if os.IsNotExist(err) || !info.IsDir() {
+			workDir = filepath.Join(root, baculaWorkDir)
+			info, err := os.Stat(workDir)
+			if os.IsNotExist(err) || !info.IsDir() {
+				return fmt.Errorf("Could not find a suitable work directory. Is bareos or bacula installed?")
+			}
+		}
+	}
+	workDir = filepath.Clean(workDir)
+	return nil
+}