antispam: sanity check

files/helpers/actions.py

@@ -385,6 +385,24 @@ def execute_blackjack(v, target, body, type):
 		return False
 	return True
 
+def execute_antispam_duplicate_comment_check(v:User, body_html:str):
+	'''
+	Sanity check for newfriends
+	'''
+	if v.id in ANTISPAM_BYPASS_IDS or v.admin_level: return
+	if v.age >= NOTIFICATION_SPAM_AGE_THRESHOLD: return
+	if len(body_html) < 16: return
+	if body_html == '!wordle': return # wordle
+	compare_time = int(time.time()) - 60 * 60 * 24
+	comment = g.db.query(Comment.id).filter(Comment.body_html == body_html,
+											Comment.created_utc >= compare_time).first()
+	if not comment: return
+	v.ban(reason="Spamming.", days=0.0)
+	send_repeatable_notification(v.id, "Your account has been banned **permanently** for the following reason:\n\n> Too much spam!")
+	g.db.add(v)
+	g.db.commit()
+	abort(403, "Too much spam!")
+
 def execute_antispam_comment_check(body:str, v:User):
 	if v.id in ANTISPAM_BYPASS_IDS: return
 	if len(body) <= COMMENT_SPAM_LENGTH_THRESHOLD: return

files/routes/comments.py

@@ -217,6 +217,7 @@ def comment(v):
 		or (SITE == 'pcmemes.net' and v.id == SNAPPY_ID))
 
 	execute_antispam_comment_check(body, v)
+	execute_antispam_duplicate_comment_check(v, body_html)
 
 	if len(body_html) > COMMENT_BODY_HTML_LENGTH_LIMIT: abort(400)
 

files/routes/static.py

@@ -218,12 +218,7 @@ def submit_contact(v):
 	body = body.strip()
 	body_html = sanitize(body)
 
-	existing = g.db.query(Comment.id).filter(Comment.author_id == v.id,
-											 Comment.parent_submission == None,
-											 Comment.level == 1,
-											 Comment.sentto == 2,
-											 Comment.body_html == body_html).first()
-	if existing: abort(409, f"You already sent that message")
+	execute_antispam_duplicate_comment_check(v, body_html)
 
 	new_comment = Comment(author_id=v.id,
 						parent_submission=None,