new option: STRIP_UNSAFE_TAGS

functions.php

@@ -2608,10 +2608,10 @@
 	function sanitize_rss($str) {
 		$res = $str;
 
-		$res = preg_replace('/<script.*?>/i', 
+/*		$res = preg_replace('/<script.*?>/i', 
 			"<p class=\"scriptWarn\">Disabled script: ", $res);
 
-		$res = preg_replace('/<\/script.*?>/i', "</p>", $res);
+		$res = preg_replace('/<\/script.*?>/i', "</p>", $res); */
 
 /*		$res = preg_replace('/<embed.*?>/i', "", $res);
 
@@ -2619,6 +2619,10 @@
 			"<p class=\"objectWarn\">(Disabled html object 
 			- flash or other embedded content)</p>", $res);  */
 
+		if (get_pref("STRIP_UNSAFE_TAGS")) {
+			$res = strip_tags($res, "<p><a><i><em><b><strong><blockquote><br><img>");
+		}
+
 		return $res;
 	}
 

schema/ttrss_schema_mysql.sql

@@ -276,6 +276,9 @@ insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id) valu
 
 insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id) values('_INFOBOX_DISABLE_OVERLAY', 1, 'false', '', 1);
 
+insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_text) values('STRIP_UNSAFE_TAGS', 1, 'true', 'Strip unsafe tags from articles', 3,
+'This option strips all, but most common HTML tags when reading articles.');
+
 create table ttrss_user_prefs (
    owner_uid integer not null,
    pref_name varchar(250),

schema/ttrss_schema_pgsql.sql

@@ -256,6 +256,9 @@ insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id) valu
 
 insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id) values('_INFOBOX_DISABLE_OVERLAY', 1, 'false', '', 1);
 
+insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_text) values('STRIP_UNSAFE_TAGS', 1, 'true', 'Strip unsafe tags from articles', 3,
+'This option strips all, but most common HTML tags when reading articles.');
+
 create table ttrss_user_prefs (
 	owner_uid integer not null references ttrss_users(id) ON DELETE CASCADE,
 	pref_name varchar(250) not null references ttrss_prefs(pref_name) ON DELETE CASCADE,

schema/versions/mysql/17.sql

@@ -2,4 +2,7 @@ insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id) valu
 
 insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id) values('_INFOBOX_DISABLE_OVERLAY', 1, 'false', '', 1);
 
+insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_text) values('STRIP_UNSAFE_TAGS', 1, 'true', 'Strip unsafe tags from articles', 3,
+'This option strips all, but most common HTML tags when reading articles.');
+
 update ttrss_version set schema_version = 17;

schema/versions/pgsql/17.sql

@@ -2,4 +2,7 @@ insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id) valu
 
 insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id) values('_INFOBOX_DISABLE_OVERLAY', 1, 'false', '', 1);
 
+insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_text) values('STRIP_UNSAFE_TAGS', 1, 'true', 'Strip unsafe tags from articles', 3,
+'This option strips all, but most common HTML tags when reading articles.');
+
 update ttrss_version set schema_version = 17;