[Minor] Lowercase css before parsing

diff --git a/src/libserver/css/css_parser.cxx b/src/libserver/css/css_parser.cxx
index 34d65aadc3d3a8ed2642b86427d518f487c98bf0..d4052038167cf861e7d72a642c7b88e9e9f539cf 100644 (file)
--- a/src/libserver/css/css_parser.cxx
+++ b/src/libserver/css/css_parser.cxx
@@ -178,7 +178,7 @@ public:
        }
 
        /* Helper parser methods */
-       bool need_unescape(const std::string_view &sv);
+       static bool need_unescape(const std::string_view &sv);
 
        ~css_parser() {
                if (!owned_style && style_object) {
@@ -778,7 +778,7 @@ auto parse_css(rspamd_mempool_t *pool, const std::string_view &st,
        css_parser parser(other, pool);
        std::string_view processed_input;
 
-       if (parser.need_unescape(st)) {
+       if (css_parser::need_unescape(st)) {
                processed_input = rspamd::css::unescape_css(pool, st);
        }
        else {
@@ -805,8 +805,24 @@ auto
 parse_css_declaration(rspamd_mempool_t *pool, const std::string_view &st)
        -> rspamd::html::html_block *
 {
+       std::string_view processed_input;
+
+       if (css_parser::need_unescape(st)) {
+               processed_input = rspamd::css::unescape_css(pool, st);
+       }
+       else {
+               /* Lowercase inplace */
+               auto *nspace = reinterpret_cast<char *>(rspamd_mempool_alloc(pool, st.length()));
+               auto *p = nspace;
+
+               for (const auto c : st) {
+                       *p++ = g_ascii_tolower(c);
+               }
+
+               processed_input = std::string_view{nspace, (std::size_t)(p - nspace)};
+       }
        auto &&res = process_declaration_tokens(pool,
-                       get_rules_parser_functor(pool, st));
+                       get_rules_parser_functor(pool, processed_input));
 
        if (res) {
                return res->compile_to_block(pool);