1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "config.h"
6 #include "core/frame/csp/MediaListDirective.h"
7
8 #include "core/frame/csp/ContentSecurityPolicy.h"
9 #include "platform/ParsingUtilities.h"
10 #include "platform/network/ContentSecurityPolicyParsers.h"
11 #include "wtf/HashSet.h"
12 #include "wtf/text/WTFString.h"
13
14 namespace WebCore {
15
MediaListDirective(const String & name,const String & value,ContentSecurityPolicy * policy)16 MediaListDirective::MediaListDirective(const String& name, const String& value, ContentSecurityPolicy* policy)
17 : CSPDirective(name, value, policy)
18 {
19 Vector<UChar> characters;
20 value.appendTo(characters);
21 parse(characters.data(), characters.data() + characters.size());
22 }
23
allows(const String & type)24 bool MediaListDirective::allows(const String& type)
25 {
26 return m_pluginTypes.contains(type);
27 }
28
parse(const UChar * begin,const UChar * end)29 void MediaListDirective::parse(const UChar* begin, const UChar* end)
30 {
31 const UChar* position = begin;
32
33 // 'plugin-types ____;' OR 'plugin-types;'
34 if (position == end) {
35 policy()->reportInvalidPluginTypes(String());
36 return;
37 }
38
39 while (position < end) {
40 // _____ OR _____mime1/mime1
41 // ^ ^
42 skipWhile<UChar, isASCIISpace>(position, end);
43 if (position == end)
44 return;
45
46 // mime1/mime1 mime2/mime2
47 // ^
48 begin = position;
49 if (!skipExactly<UChar, isMediaTypeCharacter>(position, end)) {
50 skipWhile<UChar, isNotASCIISpace>(position, end);
51 policy()->reportInvalidPluginTypes(String(begin, position - begin));
52 continue;
53 }
54 skipWhile<UChar, isMediaTypeCharacter>(position, end);
55
56 // mime1/mime1 mime2/mime2
57 // ^
58 if (!skipExactly<UChar>(position, end, '/')) {
59 skipWhile<UChar, isNotASCIISpace>(position, end);
60 policy()->reportInvalidPluginTypes(String(begin, position - begin));
61 continue;
62 }
63
64 // mime1/mime1 mime2/mime2
65 // ^
66 if (!skipExactly<UChar, isMediaTypeCharacter>(position, end)) {
67 skipWhile<UChar, isNotASCIISpace>(position, end);
68 policy()->reportInvalidPluginTypes(String(begin, position - begin));
69 continue;
70 }
71 skipWhile<UChar, isMediaTypeCharacter>(position, end);
72
73 // mime1/mime1 mime2/mime2 OR mime1/mime1 OR mime1/mime1/error
74 // ^ ^ ^
75 if (position < end && isNotASCIISpace(*position)) {
76 skipWhile<UChar, isNotASCIISpace>(position, end);
77 policy()->reportInvalidPluginTypes(String(begin, position - begin));
78 continue;
79 }
80 m_pluginTypes.add(String(begin, position - begin));
81
82 ASSERT(position == end || isASCIISpace(*position));
83 }
84 }
85
86 } // namespace WebCore
87