OriginAccessEntry.cpp revision cad810f21b803229eb11403f9209855525a25d57 
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
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9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
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12 * in the documentation and/or other materials provided with the
13 * distribution.
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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
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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,
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29 */
30
31#include "config.h"
32#include "OriginAccessEntry.h"
33
34#include "SecurityOrigin.h"
35
36namespace WebCore {
37
38OriginAccessEntry::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
49bool 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