instance blocking

app/community/routes.py

@@ -23,7 +23,7 @@ from app.community import bp
 from app.utils import get_setting, render_template, allowlist_html, markdown_to_html, validation_required, \
     shorten_string, gibberish, community_membership, ap_datetime, \
     request_etag_matches, return_304, instance_banned, can_create_post, can_upvote, can_downvote, user_filters_posts, \
-    joined_communities, moderating_communities, blocked_domains, mimetype_from_url
+    joined_communities, moderating_communities, blocked_domains, mimetype_from_url, blocked_instances
 from feedgen.feed import FeedGenerator
 from datetime import timezone, timedelta
 
@@ -152,9 +152,13 @@ def show_community(community: Community):
             posts = posts.filter(Post.nsfw == False)
         content_filters = user_filters_posts(current_user.id)
 
+        # filter domains and instances
         domains_ids = blocked_domains(current_user.id)
         if domains_ids:
             posts = posts.filter(or_(Post.domain_id.not_in(domains_ids), Post.domain_id == None))
+        instance_ids = blocked_instances(current_user.id)
+        if instance_ids:
+            posts = posts.filter(or_(Post.instance_id.not_in(instance_ids), Post.instance_id == None))
 
     if sort == '' or sort == 'hot':
         posts = posts.order_by(desc(Post.ranking)).order_by(desc(Post.posted_at))

app/domain/routes.py

@@ -9,8 +9,8 @@ from app.inoculation import inoculation
 from app.models import Post, Domain, Community, DomainBlock
 from app.domain import bp
 from app.utils import render_template, permission_required, joined_communities, moderating_communities, \
-    user_filters_posts, blocked_domains
+    user_filters_posts, blocked_domains, blocked_instances
-from sqlalchemy import desc
+from sqlalchemy import desc, or_
 
 
 @bp.route('/d/<domain_id>', methods=['GET'])
@@ -31,6 +31,10 @@ def show_domain(domain_id):
         else:
             posts = Post.query.join(Community).filter(Post.domain_id == domain.id, Community.banned == False).order_by(desc(Post.posted_at))
 
+        instance_ids = blocked_instances(current_user.id)
+        if instance_ids:
+            posts = posts.filter(or_(Post.instance_id.not_in(instance_ids), Post.instance_id == None))
+
         if current_user.is_authenticated:
             content_filters = user_filters_posts(current_user.id)
         else:

app/main/routes.py

@@ -23,7 +23,8 @@ from sqlalchemy import select, desc, text
 from sqlalchemy_searchable import search
 from app.utils import render_template, get_setting, gibberish, request_etag_matches, return_304, blocked_domains, \
     ap_datetime, ip_address, retrieve_block_list, shorten_string, markdown_to_text, user_filters_home, \
-    joined_communities, moderating_communities, parse_page, theme_list, get_request, markdown_to_html, allowlist_html
+    joined_communities, moderating_communities, parse_page, theme_list, get_request, markdown_to_html, allowlist_html, \
+    blocked_instances
 from app.models import Community, CommunityMember, Post, Site, User, utcnow, Domain, Topic, File, Instance, \
     InstanceRole, Notification
 from PIL import Image
@@ -103,6 +104,9 @@ def home_page(type, sort):
         domains_ids = blocked_domains(current_user.id)
         if domains_ids:
             posts = posts.filter(or_(Post.domain_id.not_in(domains_ids), Post.domain_id == None))
+        instance_ids = blocked_instances(current_user.id)
+        if instance_ids:
+            posts = posts.filter(or_(Post.instance_id.not_in(instance_ids), Post.instance_id == None))
         content_filters = user_filters_home(current_user.id)
 
     # Sorting

app/post/routes.py

@@ -7,7 +7,7 @@ from flask_login import login_user, logout_user, current_user, login_required
 from flask_babel import _
 from sqlalchemy import or_, desc
 
-from app import db, constants
+from app import db, constants, cache
 from app.activitypub.signature import HttpSignature, post_request
 from app.activitypub.util import default_context
 from app.community.util import save_post, send_to_remote_instance
@@ -22,7 +22,8 @@ from app.post import bp
 from app.utils import get_setting, render_template, allowlist_html, markdown_to_html, validation_required, \
     shorten_string, markdown_to_text, gibberish, ap_datetime, return_304, \
     request_etag_matches, ip_address, user_ip_banned, instance_banned, can_downvote, can_upvote, post_ranking, \
-    reply_already_exists, reply_is_just_link_to_gif_reaction, confidence, moderating_communities, joined_communities
+    reply_already_exists, reply_is_just_link_to_gif_reaction, confidence, moderating_communities, joined_communities, \
+    blocked_instances, blocked_domains
 
 
 def show_post(post_id: int):
@@ -848,6 +849,7 @@ def post_block_domain(post_id: int):
     if not existing:
         db.session.add(DomainBlock(user_id=current_user.id, domain_id=post.domain_id))
         db.session.commit()
+        cache.delete_memoized(blocked_domains, current_user.id)
     flash(_('Posts linking to %(name)s will be hidden.', name=post.domain.name))
     return redirect(post.community.local_url())
 
@@ -860,6 +862,7 @@ def post_block_instance(post_id: int):
     if not existing:
         db.session.add(InstanceBlock(user_id=current_user.id, instance_id=post.instance_id))
         db.session.commit()
+        cache.delete_memoized(blocked_instances, current_user.id)
     flash(_('Content from %(name)s will be hidden.', name=post.instance.domain))
     return redirect(post.community.local_url())
 

app/post/util.py

@@ -1,14 +1,20 @@
 from typing import List
 
-from sqlalchemy import desc, text
+from flask_login import current_user
+from sqlalchemy import desc, text, or_
 
 from app import db
 from app.models import PostReply
+from app.utils import blocked_instances
 
 
 # replies to a post, in a tree, sorted by a variety of methods
 def post_replies(post_id: int, sort_by: str, show_first: int = 0) -> List[PostReply]:
     comments = PostReply.query.filter_by(post_id=post_id)
+    if current_user.is_authenticated:
+        instance_ids = blocked_instances(current_user.id)
+        if instance_ids:
+            comments = comments.filter(or_(PostReply.instance_id.not_in(instance_ids), PostReply.instance_id == None))
     if sort_by == 'hot':
         comments = comments.order_by(desc(PostReply.ranking))
     elif sort_by == 'top':
@@ -36,6 +42,10 @@ def get_comment_branch(post_id: int, comment_id: int, sort_by: str) -> List[Post
         return []
 
     comments = PostReply.query.filter(PostReply.post_id == post_id)
+    if current_user.is_authenticated:
+        instance_ids = blocked_instances(current_user.id)
+        if instance_ids:
+            comments = comments.filter(or_(PostReply.instance_id.not_in(instance_ids), PostReply.instance_id == None))
     if sort_by == 'hot':
         comments = comments.order_by(desc(PostReply.ranking))
     elif sort_by == 'top':

app/topic/routes.py

@@ -16,7 +16,7 @@ from app.topic import bp
 from app import db, celery, cache
 from app.topic.forms import ChooseTopicsForm
 from app.utils import render_template, user_filters_posts, moderating_communities, joined_communities, \
-    community_membership, blocked_domains, validation_required, mimetype_from_url
+    community_membership, blocked_domains, validation_required, mimetype_from_url, blocked_instances
 
 
 @bp.route('/topic/<path:topic_path>', methods=['GET'])
@@ -65,6 +65,9 @@ def show_topic(topic_path):
             domains_ids = blocked_domains(current_user.id)
             if domains_ids:
                 posts = posts.filter(or_(Post.domain_id.not_in(domains_ids), Post.domain_id == None))
+            instance_ids = blocked_instances(current_user.id)
+            if instance_ids:
+                posts = posts.filter(or_(Post.instance_id.not_in(instance_ids), Post.instance_id == None))
 
         # sorting
         if sort == '' or sort == 'hot':

app/utils.py

@@ -26,7 +26,7 @@ import re
 
 from app.email import send_welcome_email
 from app.models import Settings, Domain, Instance, BannedInstances, User, Community, DomainBlock, ActivityPubLog, IpBan, \
-    Site, Post, PostReply, utcnow, Filter, CommunityMember
+    Site, Post, PostReply, utcnow, Filter, CommunityMember, InstanceBlock
 
 
 # Flask's render_template function, with support for themes added
@@ -313,6 +313,12 @@ def blocked_domains(user_id) -> List[int]:
     return [block.domain_id for block in blocks]
 
 
+@cache.memoize(timeout=86400)
+def blocked_instances(user_id) -> List[int]:
+    blocks = InstanceBlock.query.filter_by(user_id=user_id)
+    return [block.instance_id for block in blocks]
+
+
 def retrieve_block_list():
     try:
         response = requests.get('https://raw.githubusercontent.com/rimu/no-qanon/master/domains.txt', timeout=1)