1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
/*
* Copyright (C) 2011, Google Inc. All rights reserved.
* Copyright (C) 2012, Samsung Electronics. 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 APPLE INC. AND ITS CONTRIBUTORS ``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 ITS 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 "NavigatorContentUtils.h"
#if ENABLE(NAVIGATOR_CONTENT_UTILS)
#include "Document.h"
#include "ExceptionCode.h"
#include "Frame.h"
#include "Navigator.h"
#include "Page.h"
#include <wtf/HashSet.h>
#include <wtf/NeverDestroyed.h>
namespace WebCore {
static bool verifyCustomHandlerURL(const URL& baseURL, const String& url)
{
// The specification requires that it is a SYNTAX_ERR if the "%s" token is
// not present.
static const char token[] = "%s";
int index = url.find(token);
if (-1 == index)
return false;
// It is also a SYNTAX_ERR if the custom handler URL, as created by removing
// the "%s" token and prepending the base url, does not resolve.
String newURL = url;
newURL.remove(index, WTF_ARRAY_LENGTH(token) - 1);
URL kurl(baseURL, newURL);
if (kurl.isEmpty() || !kurl.isValid())
return false;
return true;
}
static inline bool isProtocolWhitelisted(const String& scheme)
{
static NeverDestroyed<HashSet<String, ASCIICaseInsensitiveHash>> protocolWhitelist = []() {
HashSet<String, ASCIICaseInsensitiveHash> set;
for (auto* protocol : { "bitcoin", "geo", "im", "irc", "ircs", "magnet", "mailto", "mms", "news", "nntp", "sip", "sms", "smsto", "ssh", "tel", "urn", "webcal", "wtai", "xmpp" })
set.add(protocol);
return set;
}();
return protocolWhitelist.get().contains(scheme);
}
static bool verifyProtocolHandlerScheme(const String& scheme)
{
if (isProtocolWhitelisted(scheme))
return true;
// FIXME: Should this be case sensitive, or should it be ASCII case-insensitive?
if (scheme.startsWith("web+")) {
// The specification requires that the length of scheme is at least five characters (including 'web+' prefix).
if (scheme.length() >= 5 && isValidProtocol(scheme))
return true;
}
return false;
}
NavigatorContentUtils* NavigatorContentUtils::from(Page* page)
{
return static_cast<NavigatorContentUtils*>(Supplement<Page>::from(page, supplementName()));
}
NavigatorContentUtils::~NavigatorContentUtils()
{
}
ExceptionOr<void> NavigatorContentUtils::registerProtocolHandler(Navigator& navigator, const String& scheme, const String& url, const String& title)
{
if (!navigator.frame())
return { };
URL baseURL = navigator.frame()->document()->baseURL();
if (!verifyCustomHandlerURL(baseURL, url))
return Exception { SYNTAX_ERR };
if (!verifyProtocolHandlerScheme(scheme))
return Exception { SECURITY_ERR };
NavigatorContentUtils::from(navigator.frame()->page())->client()->registerProtocolHandler(scheme, baseURL, URL(ParsedURLString, url), navigator.frame()->displayStringModifiedByEncoding(title));
return { };
}
#if ENABLE(CUSTOM_SCHEME_HANDLER)
static String customHandlersStateString(const NavigatorContentUtilsClient::CustomHandlersState state)
{
static NeverDestroyed<String> newHandler(ASCIILiteral("new"));
static NeverDestroyed<String> registeredHandler(ASCIILiteral("registered"));
static NeverDestroyed<String> declinedHandler(ASCIILiteral("declined"));
switch (state) {
case NavigatorContentUtilsClient::CustomHandlersNew:
return newHandler;
case NavigatorContentUtilsClient::CustomHandlersRegistered:
return registeredHandler;
case NavigatorContentUtilsClient::CustomHandlersDeclined:
return declinedHandler;
}
ASSERT_NOT_REACHED();
return String();
}
ExceptionOr<String> NavigatorContentUtils::isProtocolHandlerRegistered(Navigator& navigator, const String& scheme, const String& url)
{
static NeverDestroyed<String> declined(ASCIILiteral("declined"));
if (!navigator.frame())
return String { declined };
URL baseURL = navigator.frame()->document()->baseURL();
if (!verifyCustomHandlerURL(baseURL, url))
return Exception { SYNTAX_ERR };
if (!verifyProtocolHandlerScheme(scheme))
return Exception { SECURITY_ERR };
return customHandlersStateString(NavigatorContentUtils::from(navigator.frame()->page())->client()->isProtocolHandlerRegistered(scheme, baseURL, URL(ParsedURLString, url)));
}
ExceptionOr<void> NavigatorContentUtils::unregisterProtocolHandler(Navigator& navigator, const String& scheme, const String& url)
{
if (!navigator.frame())
return { };
URL baseURL = navigator.frame()->document()->baseURL();
if (!verifyCustomHandlerURL(baseURL, url))
return Exception { SYNTAX_ERR };
if (!verifyProtocolHandlerScheme(scheme))
return Exception { SECURITY_ERR };
NavigatorContentUtils::from(navigator.frame()->page())->client()->unregisterProtocolHandler(scheme, baseURL, URL(ParsedURLString, url));
return { };
}
#endif
const char* NavigatorContentUtils::supplementName()
{
return "NavigatorContentUtils";
}
void provideNavigatorContentUtilsTo(Page* page, std::unique_ptr<NavigatorContentUtilsClient> client)
{
NavigatorContentUtils::provideTo(page, NavigatorContentUtils::supplementName(), std::make_unique<NavigatorContentUtils>(WTFMove(client)));
}
} // namespace WebCore
#endif // ENABLE(NAVIGATOR_CONTENT_UTILS)
|
