Extract MediaListDirective and SourceListDirective from ContentSecurityPolicy.

Source/core/frame/csp/MediaListDirective.cpp

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "core/frame/csp/MediaListDirective.h"
+
+#include "core/frame/ContentSecurityPolicy.h"
+#include "platform/ParsingUtilities.h"
+#include "platform/network/ContentSecurityPolicyParsers.h"
+#include "wtf/HashSet.h"
+#include "wtf/text/WTFString.h"
+
+namespace WebCore {
+
+MediaListDirective::MediaListDirective(const String& name, const String& value, ContentSecurityPolicy* policy)
+    : CSPDirective(name, value, policy)
+{
+    Vector<UChar> characters;
+    value.appendTo(characters);
+    parse(characters.data(), characters.data() + characters.size());
+}
+
+bool MediaListDirective::allows(const String& type)
+{
+    return m_pluginTypes.contains(type);
+}
+
+void MediaListDirective::parse(const UChar* begin, const UChar* end)
+{
+    const UChar* position = begin;
+
+    // 'plugin-types ____;' OR 'plugin-types;'
+    if (position == end) {
+        policy()->reportInvalidPluginTypes(String());
+        return;
+    }
+
+    while (position < end) {
+        // _____ OR _____mime1/mime1
+        // ^        ^
+        skipWhile<UChar, isASCIISpace>(position, end);
+        if (position == end)
+            return;
+
+        // mime1/mime1 mime2/mime2
+        // ^
+        begin = position;
+        if (!skipExactly<UChar, isMediaTypeCharacter>(position, end)) {
+            skipWhile<UChar, isNotASCIISpace>(position, end);
+            policy()->reportInvalidPluginTypes(String(begin, position - begin));
+            continue;
+        }
+        skipWhile<UChar, isMediaTypeCharacter>(position, end);
+
+        // mime1/mime1 mime2/mime2
+        //      ^
+        if (!skipExactly<UChar>(position, end, '/')) {
+            skipWhile<UChar, isNotASCIISpace>(position, end);
+            policy()->reportInvalidPluginTypes(String(begin, position - begin));
+            continue;
+        }
+
+        // mime1/mime1 mime2/mime2
+        //       ^
+        if (!skipExactly<UChar, isMediaTypeCharacter>(position, end)) {
+            skipWhile<UChar, isNotASCIISpace>(position, end);
+            policy()->reportInvalidPluginTypes(String(begin, position - begin));
+            continue;
+        }
+        skipWhile<UChar, isMediaTypeCharacter>(position, end);
+
+        // mime1/mime1 mime2/mime2 OR mime1/mime1  OR mime1/mime1/error
+        //            ^                          ^               ^
+        if (position < end && isNotASCIISpace(*position)) {
+            skipWhile<UChar, isNotASCIISpace>(position, end);
+            policy()->reportInvalidPluginTypes(String(begin, position - begin));
+            continue;
+        }
+        m_pluginTypes.add(String(begin, position - begin));
+
+        ASSERT(position == end || isASCIISpace(*position));
+    }
+}
+
+} // namespace WebCore