From: Eric Wong <e@80x24.org>
Date: Sat, 5 Sep 2015 07:42:44 +0000 (+0000)
Subject: search: note why we do not support FLAG_PURE_NOT
X-Git-Tag: v1.0.0~902
X-Git-Url: http://www.git.stargrave.org/?a=commitdiff_plain;h=cc5ca11dbe88aab95cc593aa94f5d8a6ad5a2eb4;p=public-inbox.git

search: note why we do not support FLAG_PURE_NOT

Perhaps this can be optionally enabled in the future for smaller
sites.
---

diff --git a/lib/PublicInbox/Search.pm b/lib/PublicInbox/Search.pm
index 1874ee9d..b6e71da0 100644
--- a/lib/PublicInbox/Search.pm
+++ b/lib/PublicInbox/Search.pm
@@ -28,6 +28,9 @@ use constant {
 	# 8 - remove redundant/unneeded document data
 	# 9 - disable Message-ID compression
 	SCHEMA_VERSION => 9,
+
+	# n.b. FLAG_PURE_NOT is expensive not suitable for a public website
+	# as it could become a denial-of-service vector
 	QP_FLAGS => FLAG_PHRASE|FLAG_BOOLEAN|FLAG_LOVEHATE|FLAG_WILDCARD,
 };