From 3f0783c0a50c99ba4697829f9571b57d8b08f5de Mon Sep 17 00:00:00 2001
From: faried nawaz <faried@gmail.com>
Date: Mon, 14 Nov 2022 01:50:52 +0500
Subject: [PATCH 1/9] fix atom and rss feeds for users and tags

Changes:
  - make the XML closer to spec (RSS does not pass w3c's validator, but works)
  - fix dates (RFC3339 for Atom, doc says RFC822 for RSS but RFC1123 is closer)
  - fix attachment/enclosure links (but see below)
  - set feed item title to post's "summary" if present
  - pruned several elements that validators did not like
    - examples: ap_enabled, user banner urls.

Specs:
  - https://www.rssboard.org/rss-specification
  - https://validator.w3.org/feed/docs/atom.html
  - https://www.intertwingly.net/wiki/pie/Rss20AndAtom10Compared

Validators:
  - https://validator.w3.org/feed/
  - https://rssatom.com/feedvalidator.php

Attachment/enclosure links should have a "length" field (mandatory
according to the spec).  This is not present in the object's data
map.
---
 lib/pleroma/web/feed/feed_view.ex             | 71 +++++++++++++++++--
 .../templates/feed/feed/_activity.atom.eex    |  8 +--
 .../web/templates/feed/feed/_activity.rss.eex | 11 +--
 .../web/templates/feed/feed/_author.atom.eex  | 19 +++--
 .../web/templates/feed/feed/_author.rss.eex   | 27 +++----
 .../feed/feed/_tag_activity.atom.eex          | 64 ++++++++---------
 .../templates/feed/feed/_tag_author.atom.eex  | 28 ++++----
 .../web/templates/feed/feed/tag.atom.eex      | 32 ++++-----
 .../web/templates/feed/feed/user.atom.eex     |  4 +-
 .../web/templates/feed/feed/user.rss.eex      | 17 +++--
 10 files changed, 162 insertions(+), 119 deletions(-)

diff --git a/lib/pleroma/web/feed/feed_view.ex b/lib/pleroma/web/feed/feed_view.ex
index 35a5f9482..323ede90a 100644
--- a/lib/pleroma/web/feed/feed_view.ex
+++ b/lib/pleroma/web/feed/feed_view.ex
@@ -21,7 +21,7 @@ defmodule Pleroma.Web.Feed.FeedView do
     |> pub_date
   end
 
-  def pub_date(%DateTime{} = date), do: Timex.format!(date, "{RFC822}")
+  def pub_date(%DateTime{} = date), do: to_rfc1123(date)
 
   def prepare_activity(activity, opts \\ []) do
     object = Object.normalize(activity, fetch: false)
@@ -41,13 +41,18 @@ defmodule Pleroma.Web.Feed.FeedView do
 
   def most_recent_update(activities) do
     with %{updated_at: updated_at} <- List.first(activities) do
-      NaiveDateTime.to_iso8601(updated_at)
+      to_rfc3339(updated_at)
     end
   end
 
-  def most_recent_update(activities, user) do
+  def most_recent_update(activities, user, :atom) do
     (List.first(activities) || user).updated_at
-    |> NaiveDateTime.to_iso8601()
+    |> to_rfc3339()
+  end
+
+  def most_recent_update(activities, user, :rss) do
+    (List.first(activities) || user).updated_at
+    |> to_rfc1123()
   end
 
   def feed_logo do
@@ -61,6 +66,10 @@ defmodule Pleroma.Web.Feed.FeedView do
     |> MediaProxy.url()
   end
 
+  def email(user) do
+    user.nickname <> "@" <> Pleroma.Web.Endpoint.host()
+  end
+
   def logo(user) do
     user
     |> User.avatar_url()
@@ -69,18 +78,35 @@ defmodule Pleroma.Web.Feed.FeedView do
 
   def last_activity(activities), do: List.last(activities)
 
-  def activity_title(%{"content" => content}, opts \\ %{}) do
-    content
+  def activity_title(%{"content" => content, "summary" => summary} = data, opts \\ %{}) do
+    title =
+      cond do
+        summary != "" -> summary
+        content != "" -> activity_content(data)
+        true -> "a post"
+      end
+
+    title
     |> Pleroma.Web.Metadata.Utils.scrub_html()
     |> Pleroma.Emoji.Formatter.demojify()
     |> Formatter.truncate(opts[:max_length], opts[:omission])
     |> escape()
   end
 
+  def activity_description(data) do
+    content = activity_content(data)
+    summary = data["summary"]
+
+    cond do
+      content != "" -> escape(content)
+      summary != "" -> escape(summary)
+      true -> escape(data["type"])
+    end
+  end
+
   def activity_content(%{"content" => content}) do
     content
     |> String.replace(~r/[\n\r]/, "")
-    |> escape()
   end
 
   def activity_content(_), do: ""
@@ -112,4 +138,35 @@ defmodule Pleroma.Web.Feed.FeedView do
     |> html_escape()
     |> safe_to_string()
   end
+
+  @spec to_rfc3339(String.t() | NativeDateTime.t()) :: String.t()
+  def to_rfc3339(date) when is_binary(date) do
+    date
+    |> Timex.parse!("{ISO:Extended}")
+    |> to_rfc3339()
+  end
+
+  def to_rfc3339(nd) do
+    nd
+    |> Timex.to_datetime()
+    |> Timex.format!("{RFC3339}")
+  end
+
+  @spec to_rfc1123(String.t() | DateTime.t() | NativeDateTime.t()) :: String.t()
+  def to_rfc1123(datestr) when is_binary(datestr) do
+    datestr
+    |> Timex.parse!("{ISO:Extended}")
+    |> to_rfc1123()
+  end
+
+  def to_rfc1123(%DateTime{} = date) do
+    date
+    |> Timex.format!("{RFC1123}")
+  end
+
+  def to_rfc1123(nd) do
+    nd
+    |> Timex.to_datetime()
+    |> Timex.format!("{RFC1123}")
+  end
 end
diff --git a/lib/pleroma/web/templates/feed/feed/_activity.atom.eex b/lib/pleroma/web/templates/feed/feed/_activity.atom.eex
index 57bd92468..260338772 100644
--- a/lib/pleroma/web/templates/feed/feed/_activity.atom.eex
+++ b/lib/pleroma/web/templates/feed/feed/_activity.atom.eex
@@ -3,15 +3,15 @@
   <activity:verb>http://activitystrea.ms/schema/1.0/post</activity:verb>
   <id><%= @data["id"] %></id>
   <title><%= activity_title(@data, Keyword.get(@feed_config, :post_title, %{})) %></title>
-  <content type="html"><%= activity_content(@data) %></content>
-  <published><%= @activity.data["published"] %></published>
-  <updated><%= @activity.data["published"] %></updated>
+  <content type="html"><%= activity_description(@data) %></content>
+  <published><%= to_rfc3339(@activity.data["published"]) %></published>
+  <updated><%= to_rfc3339(@activity.data["published"]) %></updated>
   <ostatus:conversation ref="<%= activity_context(@activity) %>">
     <%= activity_context(@activity) %>
   </ostatus:conversation>
   <link href="<%= activity_context(@activity) %>" rel="ostatus:conversation"/>
 
-  <%= if @data["summary"] do %>
+  <%= if @data["summary"] != "" do %>
     <summary><%= escape(@data["summary"]) %></summary>
   <% end %>
 
diff --git a/lib/pleroma/web/templates/feed/feed/_activity.rss.eex b/lib/pleroma/web/templates/feed/feed/_activity.rss.eex
index 279f2171d..7a7e494c0 100644
--- a/lib/pleroma/web/templates/feed/feed/_activity.rss.eex
+++ b/lib/pleroma/web/templates/feed/feed/_activity.rss.eex
@@ -3,17 +3,12 @@
   <activity:verb>http://activitystrea.ms/schema/1.0/post</activity:verb>
   <guid><%= @data["id"] %></guid>
   <title><%= activity_title(@data, Keyword.get(@feed_config, :post_title, %{})) %></title>
-  <description><%= activity_content(@data) %></description>
-  <pubDate><%= @activity.data["published"] %></pubDate>
-  <updated><%= @activity.data["published"] %></updated>
+  <description><%= activity_description(@data) %></description>
+  <pubDate><%= to_rfc1123(@activity.data["published"]) %></pubDate>
   <ostatus:conversation ref="<%= activity_context(@activity) %>">
     <%= activity_context(@activity) %>
   </ostatus:conversation>
 
-  <%= if @data["summary"] do %>
-    <description><%= escape(@data["summary"]) %></description>
-  <% end %>
-
   <%= if @activity.local do %>
     <link><%= @data["id"] %></link>
   <% else %>
@@ -27,7 +22,7 @@
   <% end %>
 
   <%= for attachment <- @data["attachment"] || [] do %>
-    <link type="<%= attachment_type(attachment) %>"><%= attachment_href(attachment) %></link>
+    <enclosure url="<%= attachment_href(attachment) %>" type="<%= attachment_type(attachment) %>" />
   <% end %>
 
   <%= if @data["inReplyTo"] do %>
diff --git a/lib/pleroma/web/templates/feed/feed/_author.atom.eex b/lib/pleroma/web/templates/feed/feed/_author.atom.eex
index 25cbffada..90be8a559 100644
--- a/lib/pleroma/web/templates/feed/feed/_author.atom.eex
+++ b/lib/pleroma/web/templates/feed/feed/_author.atom.eex
@@ -1,17 +1,14 @@
 <author>
-  <id><%= @user.ap_id %></id>
-  <activity:object>http://activitystrea.ms/schema/1.0/person</activity:object>
   <uri><%= @user.ap_id %></uri>
+  <name><%= @user.nickname %></name>
+  <activity:object>http://activitystrea.ms/schema/1.0/person</activity:object>
+  <activity:displayName><%= @user.name %></activity:displayName>
+  <activity:image><%= User.avatar_url(@user) %></activity:image>
+  <activity:id><%= @user.ap_id %></activity:id>
+  <activity:published><%= to_rfc3339(@user.inserted_at) %></activity:published>
+  <activity:updated><%= to_rfc3339(@user.updated_at) %></activity:updated>
+  <activity:url><%= @user.ap_id %></activity:url>
   <poco:preferredUsername><%= @user.nickname %></poco:preferredUsername>
   <poco:displayName><%= @user.name %></poco:displayName>
   <poco:note><%= escape(@user.bio) %></poco:note>
-  <summary><%= escape(@user.bio) %></summary>
-  <name><%= @user.nickname %></name>
-  <link rel="avatar" href="<%= User.avatar_url(@user) %>"/>
-  <%= if User.banner_url(@user) do %>
-    <link rel="header" href="<%= User.banner_url(@user) %>"/>
-  <% end %>
-  <%= if @user.local do %>
-    <ap_enabled>true</ap_enabled>
-  <% end %>
 </author>
diff --git a/lib/pleroma/web/templates/feed/feed/_author.rss.eex b/lib/pleroma/web/templates/feed/feed/_author.rss.eex
index 526aeddcf..22477e6b1 100644
--- a/lib/pleroma/web/templates/feed/feed/_author.rss.eex
+++ b/lib/pleroma/web/templates/feed/feed/_author.rss.eex
@@ -1,17 +1,10 @@
-<managingEditor>
-  <guid><%= @user.ap_id %></guid>
-  <activity:object>http://activitystrea.ms/schema/1.0/person</activity:object>
-  <uri><%= @user.ap_id %></uri>
-  <poco:preferredUsername><%= @user.nickname %></poco:preferredUsername>
-  <poco:displayName><%= @user.name %></poco:displayName>
-  <poco:note><%= escape(@user.bio) %></poco:note>
-  <description><%= escape(@user.bio) %></description>
-  <name><%= @user.nickname %></name>
-  <link rel="avatar"><%= User.avatar_url(@user) %></link>
-  <%= if User.banner_url(@user) do %>
-    <link rel="header"><%= User.banner_url(@user) %></link>
-  <% end %>
-  <%= if @user.local do %>
-    <ap_enabled>true</ap_enabled>
-  <% end %>
-</managingEditor>
+<managingEditor><%= "#{email(@user)} (#{escape(@user.name)})" %></managingEditor>
+<activity:object>http://activitystrea.ms/schema/1.0/person</activity:object>
+<activity:displayName><%= @user.name %></activity:displayName>
+<activity:image><%= User.avatar_url(@user) %></activity:image>
+<activity:id><%= @user.ap_id %></activity:id>
+<activity:published><%= to_rfc3339(@user.inserted_at) %></activity:published>
+<activity:updated><%= to_rfc3339(@user.updated_at) %></activity:updated>
+<poco:preferredUsername><%= @user.nickname %></poco:preferredUsername>
+<poco:displayName><%= @user.name %></poco:displayName>
+<poco:note><%= escape(@user.bio) %></poco:note>
diff --git a/lib/pleroma/web/templates/feed/feed/_tag_activity.atom.eex b/lib/pleroma/web/templates/feed/feed/_tag_activity.atom.eex
index 7e2e587e1..25980c1e4 100644
--- a/lib/pleroma/web/templates/feed/feed/_tag_activity.atom.eex
+++ b/lib/pleroma/web/templates/feed/feed/_tag_activity.atom.eex
@@ -1,12 +1,22 @@
 <entry>
-    <activity:object-type>http://activitystrea.ms/schema/1.0/note</activity:object-type>
-    <activity:verb>http://activitystrea.ms/schema/1.0/post</activity:verb>
+  <activity:object-type>http://activitystrea.ms/schema/1.0/note</activity:object-type>
+  <activity:verb>http://activitystrea.ms/schema/1.0/post</activity:verb>
 
     <%= render Phoenix.Controller.view_module(@conn), "_tag_author.atom", assigns %>
 
-    <id><%= @data["id"] %></id>
-    <title><%= activity_title(@data, Keyword.get(@feed_config, :post_title, %{})) %></title>
-    <content type="html"><%= activity_content(@data) %></content>
+  <id><%= @data["id"] %></id>
+  <title><%= activity_title(@data, Keyword.get(@feed_config, :post_title, %{})) %></title>
+  <content type="html"><%= activity_description(@data) %></content>
+  <published><%= to_rfc3339(@activity.data["published"]) %></published>
+  <updated><%= to_rfc3339(@activity.data["published"]) %></updated>
+  <ostatus:conversation ref="<%= activity_context(@activity) %>">
+    <%= activity_context(@activity) %>
+  </ostatus:conversation>
+  <link href="<%= activity_context(@activity) %>" rel="ostatus:conversation"/>
+
+  <%= if @data["summary"] != "" do %>
+    <summary><%= @data["summary"] %></summary>
+  <% end %>
 
   <%= if @activity.local do %>
     <link type="application/atom+xml" href='<%= @data["id"] %>' rel="self"/>
@@ -15,37 +25,25 @@
     <link type="text/html" href='<%= @data["external_url"] %>' rel="alternate"/>
   <% end %>
 
-    <published><%= @activity.data["published"] %></published>
-    <updated><%= @activity.data["published"] %></updated>
-
-    <ostatus:conversation ref="<%= activity_context(@activity) %>">
-      <%= activity_context(@activity) %>
-    </ostatus:conversation>
-    <link href="<%= activity_context(@activity) %>" rel="ostatus:conversation"/>
-
-   <%= if @data["summary"] do %>
-    <summary><%= @data["summary"] %></summary>
-   <% end %>
-
-    <%= for id <- @activity.recipients do %>
-      <%= if id == Pleroma.Constants.as_public() do %>
+  <%= for id <- @activity.recipients do %>
+    <%= if id == Pleroma.Constants.as_public() do %>
+      <link rel="mentioned"
+            ostatus:object-type="http://activitystrea.ms/schema/1.0/collection"
+            href="http://activityschema.org/collection/public"/>
+    <% else %>
+      <%= unless Regex.match?(~r/^#{Pleroma.Web.Endpoint.url()}.+followers$/, id) do %>
         <link rel="mentioned"
-          ostatus:object-type="http://activitystrea.ms/schema/1.0/collection"
-          href="http://activityschema.org/collection/public"/>
-      <% else %>
-        <%= unless Regex.match?(~r/^#{Pleroma.Web.Endpoint.url()}.+followers$/, id) do %>
-          <link rel="mentioned"
-            ostatus:object-type="http://activitystrea.ms/schema/1.0/person"
-            href="<%= id %>" />
-        <% end %>
+              ostatus:object-type="http://activitystrea.ms/schema/1.0/person"
+              href="<%= id %>" />
       <% end %>
     <% end %>
+  <% end %>
 
-    <%= for tag <- Pleroma.Object.hashtags(@object) do %>
-      <category term="<%= tag %>"></category>
-    <% end %>
+  <%= for tag <- Pleroma.Object.hashtags(@object) do %>
+    <category term="<%= tag %>"></category>
+  <% end %>
 
-    <%= for {emoji, file} <- @data["emoji"] || %{} do %>
-      <link name="<%= emoji %>" rel="emoji" href="<%= file %>"/>
-    <% end %>
+  <%= for {emoji, file} <- @data["emoji"] || %{} do %>
+    <link name="<%= emoji %>" rel="emoji" href="<%= file %>"/>
+  <% end %>
 </entry>
diff --git a/lib/pleroma/web/templates/feed/feed/_tag_author.atom.eex b/lib/pleroma/web/templates/feed/feed/_tag_author.atom.eex
index 997c4936e..71c696832 100644
--- a/lib/pleroma/web/templates/feed/feed/_tag_author.atom.eex
+++ b/lib/pleroma/web/templates/feed/feed/_tag_author.atom.eex
@@ -1,18 +1,14 @@
 <author>
-    <activity:object-type>http://activitystrea.ms/schema/1.0/person</activity:object-type>
-    <id><%= @actor.ap_id %></id>
-    <uri><%= @actor.ap_id %></uri>
-    <name><%= @actor.nickname %></name>
-    <summary><%= escape(@actor.bio) %></summary>
-    <link rel="avatar" href="<%= User.avatar_url(@actor) %>"/>
-    <%= if User.banner_url(@actor) do %>
-      <link rel="header" href="<%= User.banner_url(@actor) %>"/>
-    <% end %>
-    <%= if @actor.local do %>
-      <ap_enabled>true</ap_enabled>
-    <% end %>
-  
-    <poco:preferredUsername><%= @actor.nickname %></poco:preferredUsername>        
-    <poco:displayName><%= @actor.name %></poco:displayName>
-    <poco:note><%= escape(@actor.bio) %></poco:note>    
+  <uri><%= @actor.ap_id %></uri>
+  <name><%= @actor.nickname %></name>
+  <activity:object-type>http://activitystrea.ms/schema/1.0/person</activity:object-type>
+  <activity:displayName><%= @actor.name %></activity:displayName>
+  <activity:image><%= User.avatar_url(@actor) %></activity:image>
+  <activity:id><%= @actor.ap_id %></activity:id>
+  <activity:published><%= to_rfc3339(@actor.inserted_at) %></activity:published>
+  <activity:updated><%= to_rfc3339(@actor.updated_at) %></activity:updated>
+  <activity:url><%= @actor.ap_id %></activity:url>
+  <poco:preferredUsername><%= @actor.nickname %></poco:preferredUsername>
+  <poco:displayName><%= @actor.name %></poco:displayName>
+  <poco:note><%= escape(@actor.bio) %></poco:note>
 </author>
diff --git a/lib/pleroma/web/templates/feed/feed/tag.atom.eex b/lib/pleroma/web/templates/feed/feed/tag.atom.eex
index 8c551feaf..4955996c9 100644
--- a/lib/pleroma/web/templates/feed/feed/tag.atom.eex
+++ b/lib/pleroma/web/templates/feed/feed/tag.atom.eex
@@ -1,22 +1,20 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
-<feed xml:lang="<%= Gettext.language_tag() %>" xmlns="http://www.w3.org/2005/Atom"
-      xmlns:thr="http://purl.org/syndication/thread/1.0"
-      xmlns:georss="http://www.georss.org/georss"
-      xmlns:activity="http://activitystrea.ms/spec/1.0/"
-      xmlns:media="http://purl.org/syndication/atommedia"
-      xmlns:poco="http://portablecontacts.net/spec/1.0"
-      xmlns:ostatus="http://ostatus.org/schema/1.0"
-      xmlns:statusnet="http://status.net/schema/api/1/">
+<feed
+  xmlns="http://www.w3.org/2005/Atom"
+  xmlns:activity="http://activitystrea.ms/spec/1.0/"
+  xmlns:poco="http://portablecontacts.net/spec/1.0"
+  xmlns:ostatus="http://ostatus.org/schema/1.0"
+  xmlns:statusnet="http://status.net/schema/api/1/">
 
-    <id><%= '#{Routes.tag_feed_url(@conn, :feed, @tag)}.rss' %></id>
-    <title>#<%= @tag %></title>
+  <id><%= Routes.tag_feed_url(@conn, :feed, @tag) <> ".atom" %></id>
+  <title>#<%= @tag %></title>
+  <subtitle><%= Gettext.dpgettext("static_pages", "tag feed description", "These are public toots tagged with #%{tag}. You can interact with them if you have an account anywhere in the fediverse.", tag: @tag) %></subtitle>
+  <logo><%= feed_logo() %></logo>
+  <updated><%= most_recent_update(@activities) %></updated>
+  <link rel="self" href="<%= '#{Routes.tag_feed_url(@conn, :feed, @tag)}.atom'  %>" type="application/atom+xml"/>
 
-    <subtitle><%= Gettext.dpgettext("static_pages", "tag feed description", "These are public toots tagged with #%{tag}. You can interact with them if you have an account anywhere in the fediverse.", tag: @tag) %></subtitle>
-    <logo><%= feed_logo() %></logo>
-    <updated><%= most_recent_update(@activities) %></updated>
-    <link rel="self" href="<%= '#{Routes.tag_feed_url(@conn, :feed, @tag)}.atom'  %>" type="application/atom+xml"/>
-    <%= for activity <- @activities do %>
-    <%= render Phoenix.Controller.view_module(@conn), "_tag_activity.atom", Map.merge(assigns, prepare_activity(activity, actor: true)) %>
-    <% end %>
+  <%= for activity <- @activities do %>
+  <%= render Phoenix.Controller.view_module(@conn), "_tag_activity.atom", Map.merge(assigns, prepare_activity(activity, actor: true)) %>
+  <% end %>
 </feed>
diff --git a/lib/pleroma/web/templates/feed/feed/user.atom.eex b/lib/pleroma/web/templates/feed/feed/user.atom.eex
index 97a7535ab..a0148d768 100644
--- a/lib/pleroma/web/templates/feed/feed/user.atom.eex
+++ b/lib/pleroma/web/templates/feed/feed/user.atom.eex
@@ -1,14 +1,14 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <feed
   xmlns="http://www.w3.org/2005/Atom"
-  xmlns:thr="http://purl.org/syndication/thread/1.0"
   xmlns:activity="http://activitystrea.ms/spec/1.0/"
   xmlns:poco="http://portablecontacts.net/spec/1.0"
   xmlns:ostatus="http://ostatus.org/schema/1.0">
 
   <id><%= Routes.user_feed_url(@conn, :feed, @user.nickname) <> ".atom" %></id>
   <title><%= @user.nickname <> "'s timeline" %></title>
-  <updated><%= most_recent_update(@activities, @user) %></updated>
+  <subtitle><%= escape(@user.bio) %></subtitle>
+  <updated><%= most_recent_update(@activities, @user, :atom) %></updated>
   <logo><%= logo(@user) %></logo>
   <link rel="self" href="<%= '#{Routes.user_feed_url(@conn, :feed, @user.nickname)}.atom' %>" type="application/atom+xml"/>
 
diff --git a/lib/pleroma/web/templates/feed/feed/user.rss.eex b/lib/pleroma/web/templates/feed/feed/user.rss.eex
index a9fee244c..80ad8b161 100644
--- a/lib/pleroma/web/templates/feed/feed/user.rss.eex
+++ b/lib/pleroma/web/templates/feed/feed/user.rss.eex
@@ -1,11 +1,20 @@
 <?xml version="1.0" encoding="UTF-8" ?>
-<rss version="2.0">
+<rss version="2.0"
+     xmlns:atom="http://www.w3.org/2005/Atom"
+     xmlns:activity="http://activitystrea.ms/spec/1.0/"
+     xmlns:ostatus="http://ostatus.org/schema/1.0"
+     xmlns:poco="http://portablecontacts.net/spec/1.0">
   <channel>
-    <guid><%= Routes.user_feed_url(@conn, :feed, @user.nickname) <> ".rss" %></guid>
     <title><%= @user.nickname <> "'s timeline" %></title>
-    <updated><%= most_recent_update(@activities, @user) %></updated>
-    <image><%= logo(@user) %></image>
     <link><%= '#{Routes.user_feed_url(@conn, :feed, @user.nickname)}.rss' %></link>
+    <atom:link href="<%= Routes.user_feed_url(@conn, :feed, @user.nickname) <> ".atom" %>"
+               rel="self" type="application/rss+xml" />
+    <description><%= escape(@user.bio) %></description>
+    <image>
+      <url><%= logo(@user) %></url>
+      <title><%= @user.nickname <> "'s timeline" %></title>
+      <link><%= '#{Routes.user_feed_url(@conn, :feed, @user.nickname)}.rss' %></link>
+    </image>
 
     <%= render Phoenix.Controller.view_module(@conn), "_author.rss", assigns %>
 

From f3253c0c6a0f6350437fc701023b375ecb1b7bc6 Mon Sep 17 00:00:00 2001
From: Mark Felder <feld@feld.me>
Date: Tue, 15 Nov 2022 11:45:32 -0500
Subject: [PATCH 2/9] Implement RFC2822 timestamp formatting

---
 lib/pleroma/web/feed/feed_view.ex             | 46 +++++++++++++++----
 .../web/templates/feed/feed/_activity.rss.eex |  2 +-
 2 files changed, 38 insertions(+), 10 deletions(-)

diff --git a/lib/pleroma/web/feed/feed_view.ex b/lib/pleroma/web/feed/feed_view.ex
index 323ede90a..35136897f 100644
--- a/lib/pleroma/web/feed/feed_view.ex
+++ b/lib/pleroma/web/feed/feed_view.ex
@@ -14,6 +14,9 @@ defmodule Pleroma.Web.Feed.FeedView do
 
   require Pleroma.Constants
 
+  @days ~w(Mon Tue Wed Thu Fri Sat Sun)
+  @months ~w(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec)
+
   @spec pub_date(String.t() | DateTime.t()) :: String.t()
   def pub_date(date) when is_binary(date) do
     date
@@ -21,7 +24,7 @@ defmodule Pleroma.Web.Feed.FeedView do
     |> pub_date
   end
 
-  def pub_date(%DateTime{} = date), do: to_rfc1123(date)
+  def pub_date(%DateTime{} = date), do: to_rfc2822(date)
 
   def prepare_activity(activity, opts \\ []) do
     object = Object.normalize(activity, fetch: false)
@@ -52,7 +55,7 @@ defmodule Pleroma.Web.Feed.FeedView do
 
   def most_recent_update(activities, user, :rss) do
     (List.first(activities) || user).updated_at
-    |> to_rfc1123()
+    |> to_rfc2822()
   end
 
   def feed_logo do
@@ -152,21 +155,46 @@ defmodule Pleroma.Web.Feed.FeedView do
     |> Timex.format!("{RFC3339}")
   end
 
-  @spec to_rfc1123(String.t() | DateTime.t() | NativeDateTime.t()) :: String.t()
-  def to_rfc1123(datestr) when is_binary(datestr) do
+  @spec to_rfc2822(String.t() | DateTime.t() | NativeDateTime.t()) :: String.t()
+  def to_rfc2822(datestr) when is_binary(datestr) do
     datestr
     |> Timex.parse!("{ISO:Extended}")
-    |> to_rfc1123()
+    |> to_rfc2822()
   end
 
-  def to_rfc1123(%DateTime{} = date) do
+  def to_rfc2822(%DateTime{} = date) do
     date
-    |> Timex.format!("{RFC1123}")
+    |> DateTime.to_naive()
+    |> NaiveDateTime.to_erl()
+    |> rfc2822_from_erl()
   end
 
-  def to_rfc1123(nd) do
+  def to_rfc2822(nd) do
     nd
     |> Timex.to_datetime()
-    |> Timex.format!("{RFC1123}")
+    |> DateTime.to_naive()
+    |> NaiveDateTime.to_erl()
+    |> rfc2822_from_erl()
+  end
+
+  @doc """
+  Builds a RFC2822 timestamp from an Erlang timestamp
+  [RFC2822 3.3 - Date and Time Specification](https://tools.ietf.org/html/rfc2822#section-3.3)
+  This function always assumes the Erlang timestamp is in Universal time, not Local time
+  """
+  def rfc2822_from_erl({{year, month, day} = date, {hour, minute, second}}) do
+    day_name = Enum.at(@days, :calendar.day_of_the_week(date) - 1)
+    month_name = Enum.at(@months, month - 1)
+
+    date_part = "#{day_name}, #{day} #{month_name} #{year}"
+    time_part = "#{pad(hour)}:#{pad(minute)}:#{pad(second)}"
+
+    date_part <> " " <> time_part <> " +0000"
+  end
+
+  defp pad(num) do
+    num
+    |> Integer.to_string()
+    |> String.pad_leading(2, "0")
   end
 end
diff --git a/lib/pleroma/web/templates/feed/feed/_activity.rss.eex b/lib/pleroma/web/templates/feed/feed/_activity.rss.eex
index 7a7e494c0..5c8f35fe4 100644
--- a/lib/pleroma/web/templates/feed/feed/_activity.rss.eex
+++ b/lib/pleroma/web/templates/feed/feed/_activity.rss.eex
@@ -4,7 +4,7 @@
   <guid><%= @data["id"] %></guid>
   <title><%= activity_title(@data, Keyword.get(@feed_config, :post_title, %{})) %></title>
   <description><%= activity_description(@data) %></description>
-  <pubDate><%= to_rfc1123(@activity.data["published"]) %></pubDate>
+  <pubDate><%= to_rfc2822(@activity.data["published"]) %></pubDate>
   <ostatus:conversation ref="<%= activity_context(@activity) %>">
     <%= activity_context(@activity) %>
   </ostatus:conversation>

From 8d500977a6ce9b0fd461c16ee2b343bab510e27f Mon Sep 17 00:00:00 2001
From: faried nawaz <faried@gmail.com>
Date: Tue, 15 Nov 2022 23:29:40 +0500
Subject: [PATCH 3/9] fix: feed item title was escaped twice

---
 lib/pleroma/web/feed/feed_view.ex | 1 -
 1 file changed, 1 deletion(-)

diff --git a/lib/pleroma/web/feed/feed_view.ex b/lib/pleroma/web/feed/feed_view.ex
index 35136897f..3e24397aa 100644
--- a/lib/pleroma/web/feed/feed_view.ex
+++ b/lib/pleroma/web/feed/feed_view.ex
@@ -93,7 +93,6 @@ defmodule Pleroma.Web.Feed.FeedView do
     |> Pleroma.Web.Metadata.Utils.scrub_html()
     |> Pleroma.Emoji.Formatter.demojify()
     |> Formatter.truncate(opts[:max_length], opts[:omission])
-    |> escape()
   end
 
   def activity_description(data) do

From 3f63caee2ade363719591edf7f6cb4c56587efda Mon Sep 17 00:00:00 2001
From: faried nawaz <faried@gmail.com>
Date: Tue, 15 Nov 2022 23:30:56 +0500
Subject: [PATCH 4/9] fix: add xmlns:thr for in-reply-to refs

---
 lib/pleroma/web/templates/feed/feed/tag.atom.eex  | 2 +-
 lib/pleroma/web/templates/feed/feed/tag.rss.eex   | 5 +++--
 lib/pleroma/web/templates/feed/feed/user.atom.eex | 1 +
 lib/pleroma/web/templates/feed/feed/user.rss.eex  | 1 +
 4 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/lib/pleroma/web/templates/feed/feed/tag.atom.eex b/lib/pleroma/web/templates/feed/feed/tag.atom.eex
index 4955996c9..14b0ee594 100644
--- a/lib/pleroma/web/templates/feed/feed/tag.atom.eex
+++ b/lib/pleroma/web/templates/feed/feed/tag.atom.eex
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
-
 <feed
   xmlns="http://www.w3.org/2005/Atom"
+  xmlns:thr="http://purl.org/syndication/thread/1.0"
   xmlns:activity="http://activitystrea.ms/spec/1.0/"
   xmlns:poco="http://portablecontacts.net/spec/1.0"
   xmlns:ostatus="http://ostatus.org/schema/1.0"
diff --git a/lib/pleroma/web/templates/feed/feed/tag.rss.eex b/lib/pleroma/web/templates/feed/feed/tag.rss.eex
index 86466d367..27dde5627 100644
--- a/lib/pleroma/web/templates/feed/feed/tag.rss.eex
+++ b/lib/pleroma/web/templates/feed/feed/tag.rss.eex
@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<rss version="2.0" xmlns:webfeeds="http://webfeeds.org/rss/1.0">
+<rss version="2.0"
+     xmlns:webfeeds="http://webfeeds.org/rss/1.0"
+     xmlns:thr="http://purl.org/syndication/thread/1.0">
   <channel>
 
-
     <title>#<%= @tag %></title>
     <description><%= Gettext.dpgettext("static_pages", "tag feed description", "These are public toots tagged with #%{tag}. You can interact with them if you have an account anywhere in the fediverse.", tag: @tag) %></description>
     <link><%= '#{Routes.tag_feed_url(@conn, :feed, @tag)}.rss' %></link>
diff --git a/lib/pleroma/web/templates/feed/feed/user.atom.eex b/lib/pleroma/web/templates/feed/feed/user.atom.eex
index a0148d768..e36bfc66c 100644
--- a/lib/pleroma/web/templates/feed/feed/user.atom.eex
+++ b/lib/pleroma/web/templates/feed/feed/user.atom.eex
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <feed
   xmlns="http://www.w3.org/2005/Atom"
+  xmlns:thr="http://purl.org/syndication/thread/1.0"
   xmlns:activity="http://activitystrea.ms/spec/1.0/"
   xmlns:poco="http://portablecontacts.net/spec/1.0"
   xmlns:ostatus="http://ostatus.org/schema/1.0">
diff --git a/lib/pleroma/web/templates/feed/feed/user.rss.eex b/lib/pleroma/web/templates/feed/feed/user.rss.eex
index 80ad8b161..fae3fcf3d 100644
--- a/lib/pleroma/web/templates/feed/feed/user.rss.eex
+++ b/lib/pleroma/web/templates/feed/feed/user.rss.eex
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <rss version="2.0"
      xmlns:atom="http://www.w3.org/2005/Atom"
+     xmlns:thr="http://purl.org/syndication/thread/1.0"
      xmlns:activity="http://activitystrea.ms/spec/1.0/"
      xmlns:ostatus="http://ostatus.org/schema/1.0"
      xmlns:poco="http://portablecontacts.net/spec/1.0">

From f597b1b3e6f04125422c0f7d8e076be44e578e48 Mon Sep 17 00:00:00 2001
From: faried nawaz <faried@gmail.com>
Date: Tue, 15 Nov 2022 23:42:12 +0500
Subject: [PATCH 5/9] remove ap_id test -- the element makes the feed break

---
 test/pleroma/web/feed/tag_controller_test.exs | 1 -
 1 file changed, 1 deletion(-)

diff --git a/test/pleroma/web/feed/tag_controller_test.exs b/test/pleroma/web/feed/tag_controller_test.exs
index 1bd2b157c..a67acdb47 100644
--- a/test/pleroma/web/feed/tag_controller_test.exs
+++ b/test/pleroma/web/feed/tag_controller_test.exs
@@ -63,7 +63,6 @@ defmodule Pleroma.Web.Feed.TagControllerTest do
            ]
 
     assert xpath(xml, ~x"//feed/entry/author/name/text()"ls) == [user.nickname, user.nickname]
-    assert xpath(xml, ~x"//feed/entry/author/id/text()"ls) == [user.ap_id, user.ap_id]
 
     conn =
       conn

From 0f67eab38483c574db82a00b53fb29e13c7df089 Mon Sep 17 00:00:00 2001
From: faried nawaz <faried@gmail.com>
Date: Tue, 15 Nov 2022 23:42:54 +0500
Subject: [PATCH 6/9] remove pub_date() -- use to_rfc2822 instead

_tag_activity.xml.eex used activity_content() instead
of activity_description(), and did not escape html properly.
---
 lib/pleroma/web/feed/feed_view.ex                        | 9 ---------
 .../web/templates/feed/feed/_tag_activity.xml.eex        | 4 ++--
 2 files changed, 2 insertions(+), 11 deletions(-)

diff --git a/lib/pleroma/web/feed/feed_view.ex b/lib/pleroma/web/feed/feed_view.ex
index 3e24397aa..449659f4b 100644
--- a/lib/pleroma/web/feed/feed_view.ex
+++ b/lib/pleroma/web/feed/feed_view.ex
@@ -17,15 +17,6 @@ defmodule Pleroma.Web.Feed.FeedView do
   @days ~w(Mon Tue Wed Thu Fri Sat Sun)
   @months ~w(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec)
 
-  @spec pub_date(String.t() | DateTime.t()) :: String.t()
-  def pub_date(date) when is_binary(date) do
-    date
-    |> Timex.parse!("{ISO:Extended}")
-    |> pub_date
-  end
-
-  def pub_date(%DateTime{} = date), do: to_rfc2822(date)
-
   def prepare_activity(activity, opts \\ []) do
     object = Object.normalize(activity, fetch: false)
 
diff --git a/lib/pleroma/web/templates/feed/feed/_tag_activity.xml.eex b/lib/pleroma/web/templates/feed/feed/_tag_activity.xml.eex
index 2334e24a2..d582c83e8 100644
--- a/lib/pleroma/web/templates/feed/feed/_tag_activity.xml.eex
+++ b/lib/pleroma/web/templates/feed/feed/_tag_activity.xml.eex
@@ -4,9 +4,9 @@
 
   <guid isPermalink="true"><%= activity_context(@activity) %></guid>
   <link><%= activity_context(@activity) %></link>
-  <pubDate><%= pub_date(@activity.data["published"]) %></pubDate>
+  <pubDate><%= to_rfc2822(@activity.data["published"]) %></pubDate>
 
-  <description><%= activity_content(@data) %></description>
+  <description><%= activity_description(@data) %></description>
   <%= for attachment <- @data["attachment"] || [] do %>
     <enclosure url="<%= attachment_href(attachment) %>" type="<%= attachment_type(attachment) %>"/>
   <% end %>

From c49316faee3d49df6236c8a57d0ed5c26d7d528e Mon Sep 17 00:00:00 2001
From: faried nawaz <faried@gmail.com>
Date: Tue, 15 Nov 2022 23:45:08 +0500
Subject: [PATCH 7/9] modify user feed controller test to expect summary for
 title

---
 test/pleroma/web/feed/user_controller_test.exs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/test/pleroma/web/feed/user_controller_test.exs b/test/pleroma/web/feed/user_controller_test.exs
index 38cde3315..de32d3d4b 100644
--- a/test/pleroma/web/feed/user_controller_test.exs
+++ b/test/pleroma/web/feed/user_controller_test.exs
@@ -74,7 +74,7 @@ defmodule Pleroma.Web.Feed.UserControllerTest do
         |> SweetXml.parse()
         |> SweetXml.xpath(~x"//entry/title/text()"l)
 
-      assert activity_titles == ['42 &amp; Thi...', 'This &amp; t...']
+      assert activity_titles == ['2hu', '2hu & as']
       assert resp =~ FeedView.escape(object.data["content"])
       assert resp =~ FeedView.escape(object.data["summary"])
       assert resp =~ FeedView.escape(object.data["context"])
@@ -90,7 +90,7 @@ defmodule Pleroma.Web.Feed.UserControllerTest do
         |> SweetXml.parse()
         |> SweetXml.xpath(~x"//entry/title/text()"l)
 
-      assert activity_titles == ['This &amp; t...']
+      assert activity_titles == ['2hu & as']
     end
 
     test "gets a rss feed", %{conn: conn, user: user, object: object, max_id: max_id} do
@@ -105,7 +105,7 @@ defmodule Pleroma.Web.Feed.UserControllerTest do
         |> SweetXml.parse()
         |> SweetXml.xpath(~x"//item/title/text()"l)
 
-      assert activity_titles == ['42 &amp; Thi...', 'This &amp; t...']
+      assert activity_titles == ['2hu', '2hu & as']
       assert resp =~ FeedView.escape(object.data["content"])
       assert resp =~ FeedView.escape(object.data["summary"])
       assert resp =~ FeedView.escape(object.data["context"])
@@ -121,7 +121,7 @@ defmodule Pleroma.Web.Feed.UserControllerTest do
         |> SweetXml.parse()
         |> SweetXml.xpath(~x"//item/title/text()"l)
 
-      assert activity_titles == ['This &amp; t...']
+      assert activity_titles == ['2hu & as']
     end
 
     test "returns 404 for a missing feed", %{conn: conn} do

From 96cfc9575c4c1b10402a40195e1ab4b9b20def26 Mon Sep 17 00:00:00 2001
From: faried nawaz <faried@gmail.com>
Date: Tue, 15 Nov 2022 23:45:23 +0500
Subject: [PATCH 8/9] document rss/atom fix in changelog

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a3cff84a1..0e34fcae1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -59,6 +59,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Fixed lowercase HTTP HEAD method in the Media Proxy Preview code
 - Removed useless notification call on Delete activities
 - Improved performance for filtering out deactivated and invisible users
+- RSS and Atom feeds for users work again
 
 ### Removed
 - Quack, the logging backend that pushes to Slack channels

From fce29984813b05e827b720656989b27bd6322ddf Mon Sep 17 00:00:00 2001
From: faried nawaz <faried@gmail.com>
Date: Wed, 16 Nov 2022 00:44:28 +0500
Subject: [PATCH 9/9] use to_rfc2822 instead of pub_date in tests, too

---
 test/pleroma/web/feed/tag_controller_test.exs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/test/pleroma/web/feed/tag_controller_test.exs b/test/pleroma/web/feed/tag_controller_test.exs
index a67acdb47..58ab8f137 100644
--- a/test/pleroma/web/feed/tag_controller_test.exs
+++ b/test/pleroma/web/feed/tag_controller_test.exs
@@ -137,8 +137,8 @@ defmodule Pleroma.Web.Feed.TagControllerTest do
            ]
 
     assert xpath(xml, ~x"//channel/item/pubDate/text()"sl) == [
-             FeedView.pub_date(activity2.data["published"]),
-             FeedView.pub_date(activity1.data["published"])
+             FeedView.to_rfc2822(activity2.data["published"]),
+             FeedView.to_rfc2822(activity1.data["published"])
            ]
 
     assert xpath(xml, ~x"//channel/item/enclosure/@url"sl) == [