1 /*
2 * Copyright (C) 2009 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32 #include "OriginAccessEntry.h"
33
34 #include "SecurityOrigin.h"
35
36 namespace WebCore {
37
OriginAccessEntry(const String & protocol,const String & host,SubdomainSetting subdomainSetting)38 OriginAccessEntry::OriginAccessEntry(const String& protocol, const String& host, SubdomainSetting subdomainSetting)
39 : m_protocol(protocol.lower())
40 , m_host(host.lower())
41 , m_subdomainSettings(subdomainSetting)
42 {
43 ASSERT(subdomainSetting == AllowSubdomains || subdomainSetting == DisallowSubdomains);
44
45 // Assume that any host that ends with a digit is trying to be an IP address.
46 m_hostIsIPAddress = !m_host.isEmpty() && isASCIIDigit(m_host[m_host.length() - 1]);
47 }
48
matchesOrigin(const SecurityOrigin & origin) const49 bool OriginAccessEntry::matchesOrigin(const SecurityOrigin& origin) const
50 {
51 ASSERT(origin.host() == origin.host().lower());
52 ASSERT(origin.protocol() == origin.protocol().lower());
53
54 if (m_protocol != origin.protocol())
55 return false;
56
57 // Special case: Include subdomains and empty host means "all hosts, including ip addresses".
58 if (m_subdomainSettings == AllowSubdomains && m_host.isEmpty())
59 return true;
60
61 // Exact match.
62 if (m_host == origin.host())
63 return true;
64
65 // Otherwise we can only match if we're matching subdomains.
66 if (m_subdomainSettings == DisallowSubdomains)
67 return false;
68
69 // Don't try to do subdomain matching on IP addresses.
70 if (m_hostIsIPAddress)
71 return false;
72
73 // Match subdomains.
74 if (origin.host().length() > m_host.length() && origin.host()[origin.host().length() - m_host.length() - 1] == '.' && origin.host().endsWith(m_host))
75 return true;
76
77 return false;
78 }
79
80 } // namespace WebCore
81