2 files changed, 19 insertions, 1 deletions
diff --git a/core/html.py b/core/html.py
index fd41a50..5045b16 100644
--- a/core/html.py
+++ b/core/html.py
@@ -20,12 +20,13 @@ def sanitize_post(post_html: str) -> str:
     Only allows a, br, p and span tags, and class attributes.
     """
     cleaner = bleach.Cleaner(
-        tags=["a", "br", "p", "span"],
+        tags=["br", "p"],
         attributes={  # type:ignore
             "a": allow_a,
             "p": ["class"],
             "span": ["class"],
         },
         filters=[LinkifyFilter],
+        strip=True,
     )
     return mark_safe(cleaner.clean(post_html))
diff --git a/core/ld.py b/core/ld.py
index 6692dab..59b867c 100644
--- a/core/ld.py
+++ b/core/ld.py
@@ -1,4 +1,5 @@
 import datetime
+import os
 import urllib.parse as urllib_parse
 from typing import Dict, List, Optional, Union
 
@@ -436,3 +437,19 @@ def parse_ld_date(value: Optional[str]) -> Optional[datetime.datetime]:
     return datetime.datetime.strptime(value, DATETIME_FORMAT).replace(
         tzinfo=datetime.timezone.utc
     )
+
+
+def media_type_from_filename(filename):
+    _, extension = os.path.splitext(filename)
+    if extension == ".png":
+        return "image/png"
+    elif extension in [".jpg", ".jpeg"]:
+        return "image/png"
+    elif extension == ".gif":
+        return "image/gif"
+    elif extension == ".apng":
+        return "image/apng"
+    elif extension == ".webp":
+        return "image/webp"
+    else:
+        return "application/octet-stream"