| /* |
| * Copyright (C) 2011 Google, Inc. All rights reserved. |
| * Copyright (C) 2016 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "ContentSecurityPolicyMediaListDirective.h" |
| |
| #include "ContentSecurityPolicy.h" |
| #include "ContentSecurityPolicyDirectiveList.h" |
| #include "ParsingUtilities.h" |
| #include <wtf/text/StringHash.h> |
| #include <wtf/text/StringParsingBuffer.h> |
| |
| namespace WebCore { |
| |
| template<typename CharacterType> static bool isMediaTypeCharacter(CharacterType c) |
| { |
| return !isASCIISpace(c) && c != '/'; |
| } |
| |
| ContentSecurityPolicyMediaListDirective::ContentSecurityPolicyMediaListDirective(const ContentSecurityPolicyDirectiveList& directiveList, const String& name, const String& value) |
| : ContentSecurityPolicyDirective(directiveList, name, value) |
| { |
| parse(value); |
| } |
| |
| bool ContentSecurityPolicyMediaListDirective::allows(const String& type) const |
| { |
| return m_pluginTypes.contains(type); |
| } |
| |
| void ContentSecurityPolicyMediaListDirective::parse(const String& value) |
| { |
| // 'plugin-types ____;' OR 'plugin-types;' |
| if (value.isEmpty()) { |
| directiveList().policy().reportInvalidPluginTypes(value); |
| return; |
| } |
| |
| readCharactersForParsing(value, [&](auto buffer) { |
| while (buffer.hasCharactersRemaining()) { |
| // _____ OR _____mime1/mime1 |
| // ^ ^ |
| skipWhile<isASCIISpace>(buffer); |
| if (buffer.atEnd()) |
| return; |
| |
| // mime1/mime1 mime2/mime2 |
| // ^ |
| auto begin = buffer.position(); |
| if (!skipExactly<isMediaTypeCharacter>(buffer)) { |
| skipWhile<isNotASCIISpace>(buffer); |
| directiveList().policy().reportInvalidPluginTypes(String(begin, buffer.position() - begin)); |
| continue; |
| } |
| skipWhile<isMediaTypeCharacter>(buffer); |
| |
| // mime1/mime1 mime2/mime2 |
| // ^ |
| if (!skipExactly(buffer, '/')) { |
| skipWhile<isNotASCIISpace>(buffer); |
| directiveList().policy().reportInvalidPluginTypes(String(begin, buffer.position() - begin)); |
| continue; |
| } |
| |
| // mime1/mime1 mime2/mime2 |
| // ^ |
| if (!skipExactly<isMediaTypeCharacter>(buffer)) { |
| skipWhile<isNotASCIISpace>(buffer); |
| directiveList().policy().reportInvalidPluginTypes(String(begin, buffer.position() - begin)); |
| continue; |
| } |
| skipWhile<isMediaTypeCharacter>(buffer); |
| |
| // mime1/mime1 mime2/mime2 OR mime1/mime1 OR mime1/mime1/error |
| // ^ ^ ^ |
| if (buffer.hasCharactersRemaining() && isNotASCIISpace(*buffer)) { |
| skipWhile<isNotASCIISpace>(buffer); |
| directiveList().policy().reportInvalidPluginTypes(String(begin, buffer.position() - begin)); |
| continue; |
| } |
| m_pluginTypes.add(String(begin, buffer.position() - begin)); |
| |
| ASSERT(buffer.atEnd() || isASCIISpace(*buffer)); |
| } |
| }); |
| } |
| |
| } // namespace WebCore |