/*

 * Copyright (C) 2004, 2006, 2007 Apple Inc. 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 COMPUTER, INC. ``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 COMPUTER, INC. OR

 * 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 "ResourceHandle.h"

#include "ResourceHandleInternal.h"

#include "Logging.h"

#include "ResourceHandleClient.h"

#include "Timer.h"

#include <algorithm>

namespace WebCore {

ResourceHandle::ResourceHandle(const ResourceRequest& request, ResourceHandleClient* client, bool defersLoading,

         bool shouldContentSniff, bool mightDownloadFromHandle)

    : d(new ResourceHandleInternal(this, request, client, defersLoading, shouldContentSniff, mightDownloadFromHandle))

{

}

PassRefPtr<ResourceHandle> ResourceHandle::create(const ResourceRequest& request, ResourceHandleClient* client,

    Frame* frame, bool defersLoading, bool shouldContentSniff, bool mightDownloadFromHandle)

{

    RefPtr<ResourceHandle> newHandle(new ResourceHandle(request, client, defersLoading, shouldContentSniff, mightDownloadFromHandle));

    if (!portAllowed(request)) {

        newHandle->scheduleBlockedFailure();

        return newHandle.release();

    }

    if (newHandle->start(frame))

        return newHandle.release();

    return 0;

}

void ResourceHandle::scheduleBlockedFailure()

{

    Timer<ResourceHandle>* blockedTimer = new Timer<ResourceHandle>(this, &ResourceHandle::fireBlockedFailure);

    blockedTimer->startOneShot(0);

}

void ResourceHandle::fireBlockedFailure(Timer<ResourceHandle>* timer)

{

    if (client())

        client()->wasBlocked(this);

    delete timer;

}

ResourceHandleClient* ResourceHandle::client() const

{

    return d->m_client;

}

void ResourceHandle::setClient(ResourceHandleClient* client)

{

    d->m_client = client;

}

const ResourceRequest& ResourceHandle::request() const

{

    return d->m_request;

}

void ResourceHandle::clearAuthentication()

{

#if PLATFORM(MAC)

    d->m_currentMacChallenge = nil;

#elif PLATFORM(CF)

    d->m_currentCFChallenge = 0;

#endif

    d->m_currentWebChallenge.nullify();

}

bool ResourceHandle::portAllowed(const ResourceRequest& request)

{

    unsigned short port = request.url().port();

    // Since most URLs don't have a port, return early for the "no port" case.

    if (!port)

        return true;

    // This blocked port list matches the port blocking that Mozilla implements.

    // See http://www.mozilla.org/projects/netlib/PortBanning.html for more information.

    static const unsigned short blockedPortList[] = {

        1,    // tcpmux

        7,    // echo

        9,    // discard

        11,   // systat

        13,   // daytime

        15,   // netstat

        17,   // qotd

        19,   // chargen

        20,   // FTP-data

        21,   // FTP-control

        22,   // SSH

        23,   // telnet

        25,   // SMTP

        37,   // time

        42,   // name

        43,   // nicname

        53,   // domain

        77,   // priv-rjs

        79,   // finger

        87,   // ttylink

        95,   // supdup

        101,  // hostriame

        102,  // iso-tsap

        103,  // gppitnp

        104,  // acr-nema

        109,  // POP2

        110,  // POP3

        111,  // sunrpc

        113,  // auth

        115,  // SFTP

        117,  // uucp-path

        119,  // nntp

        123,  // NTP

        135,  // loc-srv / epmap

        139,  // netbios

        143,  // IMAP2

        179,  // BGP

        389,  // LDAP

        465,  // SMTP+SSL

        512,  // print / exec

        513,  // login

        514,  // shell

        515,  // printer

        526,  // tempo

        530,  // courier

        531,  // Chat

        532,  // netnews

        540,  // UUCP

        556,  // remotefs

        563,  // NNTP+SSL

        587,  // ESMTP

        601,  // syslog-conn

        636,  // LDAP+SSL

        993,  // IMAP+SSL

        995,  // POP3+SSL

        2049, // NFS

        4045, // lockd

        6000, // X11

    };

    const unsigned short* const blockedPortListEnd = blockedPortList

        + sizeof(blockedPortList) / sizeof(blockedPortList[0]);

// fixme use the template

#if PLATFORM(SYMBIAN)

    return true;

#else

    // If the port is not in the blocked port list, allow it.

    if (!std::binary_search(blockedPortList, blockedPortListEnd, port))

        return true;

    // Allow ports 21 and 22 for FTP URLs, as Mozilla does.

    if ((port == 21 || port == 22) && request.url().url().startsWith("ftp:", false))

        return true;

    // Allow any port number in a file URL, since the port number is ignored.

    if (request.url().url().startsWith("file:", false))

        return true;

    return false;

#endif

}

} // namespace WebCore