make files read only

oml/item/models.py

@@ -7,6 +7,7 @@ import hashlib
 import os
 import re
 import shutil
+import stat
 import unicodedata
 
 from PIL import Image
@@ -550,6 +551,14 @@ class File(db.Model):
         prefix = os.path.join(os.path.expanduser(prefs['libraryPath']), 'Books/')
         return os.path.join(prefix, self.path)
 
+    def make_readonly(self):
+        current_path = self.fullpath()
+        if os.path.exists(current_path):
+            mode = os.stat(current_path)[stat.ST_MODE]
+            readonly = mode & ~stat.S_IWUSR & ~stat.S_IWGRP & ~stat.S_IWOTH
+            if mode != readonly:
+                os.chmod(current_path, readonly)
+
     def move(self):
         def format_underscores(string):
             return re.sub('^\.|\.$|:|/|\?|<|>', '_', string)
@@ -561,6 +570,9 @@ class File(db.Model):
         if not os.path.exists(current_path):
             logger.debug('file is missing. %s', current_path)
             return
+
+        self.make_readonly()
+
         author = '; '.join([get_sort_name(a) for a in j.get('author', [])])
         if not author:
             author = 'Unknown Author'