Source/platform/weborigin/OriginAccessEntry.cpp

/*
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#include "config.h"
#include "platform/weborigin/OriginAccessEntry.h"

#include "platform/weborigin/SecurityOrigin.h"
#include "public/platform/Platform.h"
#include "public/platform/WebPublicSuffixList.h"

namespace blink {

OriginAccessEntry::OriginAccessEntry(const String& protocol, const String& host, SubdomainSetting subdomainSetting, IPAddressSetting ipAddressSetting)
    : m_protocol(protocol.lower())
    , m_host(host.lower())
    , m_subdomainSettings(subdomainSetting)
    , m_ipAddressSettings(ipAddressSetting)
    , m_hostIsPublicSuffix(false)
{
    ASSERT(subdomainSetting == AllowSubdomains || subdomainSetting == DisallowSubdomains);

    // Assume that any host that ends with a digit is trying to be an IP address.
    m_hostIsIPAddress = !m_host.isEmpty() && isASCIIDigit(m_host[m_host.length() - 1]);

    // Look for top-level domains, either with or without an additional dot.
    if (!m_hostIsIPAddress) {
        blink::WebPublicSuffixList* suffixList = blink::Platform::current()->publicSuffixList();
        if (suffixList && m_host.length() <= suffixList->getPublicSuffixLength(m_host) + 1)
            m_hostIsPublicSuffix = true;
    }
}

OriginAccessEntry::MatchResult OriginAccessEntry::matchesOrigin(const SecurityOrigin& origin) const
{
    ASSERT(origin.host() == origin.host().lower());
    ASSERT(origin.protocol() == origin.protocol().lower());

    if (m_protocol != origin.protocol())
        return DoesNotMatchOrigin;

    // Special case: Include subdomains and empty host means "all hosts, including ip addresses".
    if (m_subdomainSettings == AllowSubdomains && m_host.isEmpty())
        return MatchesOrigin;

    // Exact match.
    if (m_host == origin.host())
        return MatchesOrigin;

    // Otherwise we can only match if we're matching subdomains.
    if (m_subdomainSettings == DisallowSubdomains)
        return DoesNotMatchOrigin;

    // Don't try to do subdomain matching on IP addresses (except for testing).
    if (m_hostIsIPAddress && m_ipAddressSettings == TreatIPAddressAsIPAddress)
        return DoesNotMatchOrigin;

    // Match subdomains.
    if (origin.host().length() <= m_host.length() || origin.host()[origin.host().length() - m_host.length() - 1] != '.' || !origin.host().endsWith(m_host))
        return DoesNotMatchOrigin;

    if (m_hostIsPublicSuffix)
        return MatchesOriginButIsPublicSuffix;

    return MatchesOrigin;
}

} // namespace blink