Bug 37357 – UserContentURLPattern matches a pattern of "http://ple.com/" for "http://apple.com/"

• Component: WebCore Misc.
• Status: RESOLVED FIXED

[Timothy Hatcher]

The matchesHost function matches domains when it shouldn't.

bool UserContentURLPattern::matchesHost(const KURL& test) const
{
    if (test.host() == m_host)
        return true;

    if (!m_matchSubdomains)
        return false;

    // If we're matching subdomains, and we have no host, that means the pattern
    // was <scheme>://*/<whatever>, so we match anything.
    if (!m_host.length())
        return true;

    // Check if the test host is a subdomain of our host.
    return test.host().endsWith(m_host, false);
}

The error is in the last line. Consider test.host() is "apple.com" and m_host from the pattern is "ple.com", this will return true.

We need to look for a period after it checks for the suffix.

Something like:

    const String& host = test.host();

    // Check if the domain is a subdomain of our host.
    if (!host.endsWith(m_host, false))
        return false;

    ASSERT(host.length() > m_host.length());

    // Check that the character before the suffix is a period.
    return host[host.length() - m_host.length() - 1] == '.';

[Timothy Hatcher]

Created attachment 53963 [details]
Proposed change

[Darin Adler]

Comment on attachment 53963 [details]
Proposed change

Is there any way to make tests for UserContentURLPattern? I don't like seeing a bug fix without a test. Can we rig things so this can be tested with DumpRenderTree?

r=me

[Timothy Hatcher]

Landed in r57990.

There is no testing harness for UserContentURLPattern yet. I filed bug 37931.