Load buy sites from file

daemon.py

@@ -178,6 +178,7 @@ from webapp_podcast import html_podcast_episode
 from webapp_theme_designer import html_theme_designer
 from webapp_minimalbutton import set_minimal
 from webapp_minimalbutton import is_minimal
+from webapp_utils import load_buy_sites
 from webapp_utils import get_default_path
 from webapp_utils import get_avatar_image_url
 from webapp_utils import html_hashtag_blocked
@@ -22983,7 +22984,7 @@ def run_daemon(max_hashtags: int,
     assert not scan_themes_for_scripts(base_dir)
 
     # permitted sites from which the buy button may be displayed
-    httpd.buy_sites = {}
+    httpd.buy_sites = load_buy_sites(base_dir)
 
     # which accounts should minimize all attached images by default
     httpd.min_images_for_accounts = load_min_images_for_accounts(base_dir)

webapp_utils.py

@@ -2136,3 +2136,14 @@ def get_buy_links(post_json_object: str, translate: {}, buy_sites: {}) -> {}:
                 links[site.title()] = item['href']
                 continue
     return links
+
+
+def load_buy_sites(base_dir: str) -> {}:
+    """Loads domains from which buying is permitted
+    """
+    buy_sites_filename = base_dir + '/accounts/buy_sites.txt'
+    if os.path.isfile(buy_sites_filename):
+        buy_sites_json = load_json(buy_sites_filename)
+        if buy_sites_json:
+            return buy_sites_json
+    return {}