From d22abb557ecda41ab076b4c777dfd4c95340fbfd Mon Sep 17 00:00:00 2001
From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Mon, 21 Oct 2019 14:44:07 +0100
Subject: [PATCH] [Minor] Fix utf8 regexps escaping

---
 src/libutil/str_util.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/src/libutil/str_util.c b/src/libutil/str_util.c
index f5cd8be1a..f325b35f6 100644
--- a/src/libutil/str_util.c
+++ b/src/libutil/str_util.c
@@ -2725,7 +2725,7 @@ rspamd_str_regexp_escape (const gchar *pattern, gsize slen,
 	gsize len;
 	static const gchar hexdigests[16] = "0123456789abcdef";
 
-	len = slen;
+	len = 0;
 	p = pattern;
 
 	/* [-[\]{}()*+?.,\\^$|#\s] need to be escaped */
@@ -2781,13 +2781,10 @@ rspamd_str_regexp_escape (const gchar *pattern, gsize slen,
 		}
 	}
 
-	if (slen == len) {
-		if (dst_len) {
-
-			if (tmp_utf) {
-				slen = strlen (tmp_utf);
-			}
+	if (len == 0) {
+		/* No need to escape anything */
 
+		if (dst_len) {
 			*dst_len = slen;
 		}
 
@@ -2799,10 +2796,12 @@ rspamd_str_regexp_escape (const gchar *pattern, gsize slen,
 		}
 	}
 
+	/* Escape logic */
 	if (tmp_utf) {
 		pattern = tmp_utf;
 	}
 
+	len = slen + len;
 	res = g_malloc (len + 1);
 	p = pattern;
 	d = res;
-- 
2.39.5