From 2a3690d1c148da5dd799052403ba7290e1fb7de0 Mon Sep 17 00:00:00 2001
From: Andrew Godwin
Date: Thu, 17 Nov 2022 19:31:00 -0700
Subject: Return images and summary in actor

---
 .gitignore                      |  1 +
 core/html.py                    |  3 ++-
 core/ld.py                      | 17 +++++++++++++++++
 takahe/settings/base.py         |  6 ++++--
 takahe/urls.py                  |  4 +---
 templates/activities/_post.html |  4 +++-
 templates/identity/view.html    |  6 ++++++
 users/models/identity.py        | 22 ++++++++++++++++++++--
 8 files changed, 54 insertions(+), 9 deletions(-)

diff --git a/.gitignore b/.gitignore
index 2a5c47b..5f0eef3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 *.psql
 *.sqlite3
 .venv
+/*.env
 /media/
 notes.md
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"
diff --git a/takahe/settings/base.py b/takahe/settings/base.py
index b98b9a0..dd89818 100644
--- a/takahe/settings/base.py
+++ b/takahe/settings/base.py
@@ -108,5 +108,7 @@ STATICFILES_DIRS = [
 
 ALLOWED_HOSTS = ["*"]
 
-MEDIA_ROOT = BASE_DIR / "media"
-MEDIA_URL = "/media/"
+
+# Note that this MUST be a fully qualified URL in production
+MEDIA_URL = os.environ.get("TAKAHE_MEDIA_URL", "/media/")
+MEDIA_ROOT = os.environ.get("TAKAHE_MEDIA_ROOT", BASE_DIR / "media")
diff --git a/takahe/urls.py b/takahe/urls.py
index c2d9d6b..0b23d7d 100644
--- a/takahe/urls.py
+++ b/takahe/urls.py
@@ -1,5 +1,3 @@
-import re
-
 from django.conf import settings as djsettings
 from django.contrib import admin as djadmin
 from django.urls import path, re_path
@@ -99,7 +97,7 @@ urlpatterns = [
     path("djadmin/", djadmin.site.urls),
     # Media files
     re_path(
-        r"^%s(?P<path>.*)$" % re.escape(djsettings.MEDIA_URL.lstrip("/")),
+        r"^media/(?P<path>.*)$",
         serve,
         kwargs={"document_root": djsettings.MEDIA_ROOT},
     ),
diff --git a/templates/activities/_post.html b/templates/activities/_post.html
index 5de8bc7..3d455ea 100644
--- a/templates/activities/_post.html
+++ b/templates/activities/_post.html
@@ -2,7 +2,9 @@
 {% load activity_tags %}
 <div class="post" data-takahe-id="{{ post.id }}">
 
-    <img src="{{ post.author.local_icon_url }}" class="icon">
+    <a href="{{ post.author.urls.view }}">
+        <img src="{{ post.author.local_icon_url }}" class="icon">
+    </a>
 
     <time>
         {% if post.visibility == 0 %}
diff --git a/templates/identity/view.html b/templates/identity/view.html
index 223c2bb..f877f59 100644
--- a/templates/identity/view.html
+++ b/templates/identity/view.html
@@ -28,6 +28,12 @@
         {{ identity.name_or_handle }} <small>@{{ identity.handle }}</small>
     </h1>
 
+    {% if identity.summary %}
+        <div class="summary">
+            {{ identity.safe_summary }}
+        </div>
+    {% endif %}
+
     {% if not identity.local %}
         {% if identity.outdated and not identity.name %}
             <p class="system-note">
diff --git a/users/models/identity.py b/users/models/identity.py
index d4ab720..21912ac 100644
--- a/users/models/identity.py
+++ b/users/models/identity.py
@@ -8,10 +8,12 @@ from asgiref.sync import async_to_sync, sync_to_async
 from cryptography.hazmat.primitives import serialization
 from cryptography.hazmat.primitives.asymmetric import rsa
 from django.db import models
+from django.template.defaultfilters import linebreaks_filter
 from django.templatetags.static import static
 from django.utils import timezone
 
-from core.ld import canonicalise
+from core.html import sanitize_post
+from core.ld import canonicalise, media_type_from_filename
 from core.uploads import upload_namer
 from stator.models import State, StateField, StateGraph, StatorModel
 from users.models.domain import Domain
@@ -139,6 +141,10 @@ class Identity(StatorModel):
         elif self.image_uri:
             return self.image_uri
 
+    @property
+    def safe_summary(self):
+        return sanitize_post(self.summary)
+
     ### Alternate constructors/fetchers ###
 
     @classmethod
@@ -223,7 +229,19 @@ class Identity(StatorModel):
         if self.name:
             response["name"] = self.name
         if self.summary:
-            response["summary"] = self.summary
+            response["summary"] = str(linebreaks_filter(self.summary))
+        if self.icon:
+            response["icon"] = {
+                "type": "Image",
+                "mediaType": media_type_from_filename(self.icon.name),
+                "url": self.icon.url,
+            }
+        if self.image:
+            response["image"] = {
+                "type": "Image",
+                "mediaType": media_type_from_filename(self.image.name),
+                "url": self.image.url,
+            }
         return response
 
     ### ActivityPub (inbound) ###
-- 
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