blob: c067b3ce3c9ee6c6dcda9668f741be9e57aa87db [file] [log] [blame]
// 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 "core/frame/csp/MediaListDirective.h"
#include "core/frame/csp/ContentSecurityPolicy.h"
#include "platform/network/ContentSecurityPolicyParsers.h"
#include "wtf/HashSet.h"
#include "wtf/text/ParsingUtilities.h"
#include "wtf/text/WTFString.h"
namespace blink {
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 blink