snapshot of https://github.com/zulip/zulip.git @ 48c69911c7dd4e03b20552eb3bd77ad8151c1357 (2026-09-15)

zerver/lib/url_preview/parsers/open_graph.py

@@ -0,0 +1,36 @@
+from urllib.parse import urlsplit
+
+from typing_extensions import override
+
+from zerver.lib.url_preview.types import UrlEmbedData
+
+from .base import BaseParser
+
+
+class OpenGraphParser(BaseParser):
+    @override
+    def extract_data(self) -> UrlEmbedData:
+        meta = self._soup.find_all("meta")
+
+        data = UrlEmbedData()
+
+        for tag in meta:
+            if not tag.has_attr("property"):
+                continue
+            if not tag.has_attr("content"):
+                continue
+
+            if tag["property"] == "og:title":
+                data.title = tag["content"]
+            elif tag["property"] == "og:description":
+                data.description = tag["content"]
+            elif tag["property"] == "og:image":
+                try:
+                    # We use urlsplit and not URLValidator because we
+                    # need to support relative URLs.
+                    urlsplit(tag["content"])
+                except ValueError:
+                    continue
+                data.image = tag["content"]
+
+        return data