Add pluggable transport licenses.

This file contains the copyrights and licenses of third-party

dependencies of pluggable transports that are distributed in the

pluggable transports bundle.

===============================================================================

Python

Some pluggable transports are written in Python and the binary packages

include a Python interpreter. A copy of the Python license (which itself

includes the licenses of some of Python's components) is included in the

file LICENSE.PYTHON.

===============================================================================

OpenSSL

(From http://openssl.org/source/license.html.)

  LICENSE ISSUES

  ==============

  The OpenSSL toolkit stays under a dual license, i.e. both the conditions of

  the OpenSSL License and the original SSLeay license apply to the toolkit.

  See below for the actual license texts. Actually both licenses are BSD-style

  Open Source licenses. In case of any license issues related to OpenSSL

  please contact openssl-core@openssl.org.

  OpenSSL License

  ---------------

/* ====================================================================

 * Copyright (c) 1998-2011 The OpenSSL Project.  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.

 *

 * 3. All advertising materials mentioning features or use of this

 *    software must display the following acknowledgment:

 *    "This product includes software developed by the OpenSSL Project

 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"

 *

 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to

 *    endorse or promote products derived from this software without

 *    prior written permission. For written permission, please contact

 *    openssl-core@openssl.org.

 *

 * 5. Products derived from this software may not be called "OpenSSL"

 *    nor may "OpenSSL" appear in their names without prior written

 *    permission of the OpenSSL Project.

 *

 * 6. Redistributions of any form whatsoever must retain the following

 *    acknowledgment:

 *    "This product includes software developed by the OpenSSL Project

 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"

 *

 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

 * EXPRESSED 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 THE OpenSSL PROJECT OR

 * ITS 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.

 * ====================================================================

 *

 * This product includes cryptographic software written by Eric Young

 * (eay@cryptsoft.com).  This product includes software written by Tim

 * Hudson (tjh@cryptsoft.com).

 *

 */

 Original SSLeay License

 -----------------------

/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)

 * All rights reserved.

 *

 * This package is an SSL implementation written

 * by Eric Young (eay@cryptsoft.com).

 * The implementation was written so as to conform with Netscapes SSL.

 *

 * This library is free for commercial and non-commercial use as long as

 * the following conditions are aheared to.  The following conditions

 * apply to all code found in this distribution, be it the RC4, RSA,

 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation

 * included with this distribution is covered by the same copyright terms

 * except that the holder is Tim Hudson (tjh@cryptsoft.com).

 *

 * Copyright remains Eric Young's, and as such any Copyright notices in

 * the code are not to be removed.

 * If this package is used in a product, Eric Young should be given attribution

 * as the author of the parts of the library used.

 * This can be in the form of a textual message at program startup or

 * in documentation (online or textual) provided with the package.

 *

 * 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 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.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *    "This product includes cryptographic software written by

 *     Eric Young (eay@cryptsoft.com)"

 *    The word 'cryptographic' can be left out if the rouines from the library

 *    being used are not cryptographic related :-).

 * 4. If you include any Windows specific code (or a derivative thereof) from

 *    the apps directory (application code) you must include an acknowledgement:

 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

 *

 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 THE AUTHOR 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.

 *

 * The licence and distribution terms for any publically available version or

 * derivative of this code cannot be changed.  i.e. this code cannot simply be

 * copied and put under another distribution licence

 * [including the GNU Public Licence.]

 */

===============================================================================

M2Crypto

Copyright (c) 1999-2004 Ng Pheng Siong. All rights reserved.

Portions copyright (c) 2004-2006 Open Source Applications Foundation. 

All rights reserved.

Portions copyright (c) 2005-2006 Vrije Universiteit Amsterdam. 

All rights reserved.

Copyright (c) 2008-2010 Heikki Toivonen. All rights reserved.

Permission to use, copy, modify, and distribute this software and its

documentation for any purpose and without fee is hereby granted,

provided that the above copyright notice appear in all copies and that

both that copyright notice and this permission notice appear in

supporting documentation.

THE AUTHOR PROVIDES THIS SOFTWARE ``AS IS'' AND ANY EXPRESSED 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 THE AUTHOR 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.

===============================================================================

py2exe

Windows binary packages are built using py2exe.

Copyright (c) 2000-2008 Thomas Heller, Mark Hammond, Jimmy Retzlaff

Permission is hereby granted, free of charge, to any person obtaining

a copy of this software and associated documentation files (the

"Software"), to deal in the Software without restriction, including

without limitation the rights to use, copy, modify, merge, publish,

distribute, sublicense, and/or sell copies of the Software, and to

permit persons to whom the Software is furnished to do so, subject to

the following conditions:

The above copyright notice and this permission notice shall be

included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE

LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION

OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

===============================================================================

pyptlib

Redistribution and use in source and binary forms, with or without

modification, are permitted provided that the following conditions are

met:

    * Redistributions of source code must retain the above copyright

notice, this list of conditions and the following disclaimer.

    * 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.

    * Neither the names of the copyright owners nor the names of its

contributors may be used to endorse or promote products derived from

this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

"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 THE COPYRIGHT

OWNER 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.

===============================================================================

PyCrypto

To the best of our knowledge, with the exceptions noted below or

within the files themselves, the files that constitute PyCrypto are in

the public domain. Most are distributed with the following notice:

  The contents of this file are dedicated to the public domain. To

  the extent that dedication to the public domain is not available,

  everyone is granted a worldwide, perpetual, royalty-free,

  non-exclusive license to exercise all rights associated with the

  contents of this file for any purpose whatsoever.

  No rights are reserved.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS

  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

  SOFTWARE.

Exceptions:

 - Portions of HMAC.py and setup.py are derived from Python 2.2, and

   are therefore Copyright (c) 2001, 2002, 2003 Python Software

   Foundation (All Rights Reserved). They are licensed by the PSF

   under the terms of the Python 2.2 license. (See the file

   LEGAL/copy/LICENSE.python-2.2 for details.)

 - The various GNU autotools (autoconf, automake, aclocal, etc.) are

   used during the build process. This includes macros from

   autoconf-archive, which are located in the m4/ directory. As is

   customary, some files from the GNU autotools are included in the

   source tree (in the root directory, and in the build-aux/

   directory). These files are merely part of the build process, and

   are not included in binary builds of the software.

EXPORT RESTRICTIONS:

Note that the export or re-export of cryptographic software and/or

source code may be subject to regulation in your jurisdiction.

===============================================================================

Twisted

Copyright (c) 2001-2013

Allen Short

Andy Gayton

Andrew Bennetts

Antoine Pitrou

Apple Computer, Inc.

Benjamin Bruheim

Bob Ippolito

Canonical Limited

Christopher Armstrong

David Reid

Donovan Preston

Eric Mangold

Eyal Lotem

Itamar Turner-Trauring

James Knight

Jason A. Mobarak

Jean-Paul Calderone

Jessica McKellar

Jonathan Jacobs

Jonathan Lange

Jonathan D. Simms

Jürgen Hermann

Kevin Horn

Kevin Turner

Mary Gardiner

Matthew Lefkowitz

Massachusetts Institute of Technology

Moshe Zadka

Paul Swartz

Pavel Pergamenshchik

Ralph Meijer

Sean Riley

Software Freedom Conservancy

Travis B. Hartwell

Thijs Triemstra

Thomas Herve

Timothy Allen

Permission is hereby granted, free of charge, to any person obtaining

a copy of this software and associated documentation files (the

"Software"), to deal in the Software without restriction, including

without limitation the rights to use, copy, modify, merge, publish,

distribute, sublicense, and/or sell copies of the Software, and to

permit persons to whom the Software is furnished to do so, subject to

the following conditions:

The above copyright notice and this permission notice shall be

included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE

LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION

OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

===============================================================================

zope.interface

# Copyright (c) 2006 Zope Corporation and Contributors.

# All Rights Reserved.

#

# This software is subject to the provisions of the Zope Public License,

# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.

# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED

# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS

# FOR A PARTICULAR PURPOSE.

Zope Public License (ZPL) Version 2.1

-------------------------------------

A copyright notice accompanies this license document that

identifies the copyright holders.

This license has been certified as open source. It has also

been designated as GPL compatible by the Free Software

Foundation (FSF).

Redistribution and use in source and binary forms, with or

without modification, are permitted provided that the

following conditions are met:

1. Redistributions in source code must retain the

   accompanying copyright notice, this list of conditions,

   and the following disclaimer.

2. Redistributions in binary form must reproduce the accompanying

   copyright notice, this list of conditions, and the

   following disclaimer in the documentation and/or other

   materials provided with the distribution.

3. Names of the copyright holders must not be used to

   endorse or promote products derived from this software

   without prior written permission from the copyright

   holders.

4. The right to distribute this software or to use it for

   any purpose does not give you the right to use

   Servicemarks (sm) or Trademarks (tm) of the copyright

   holders. Use of them is covered by separate agreement

   with the copyright holders.

5. If any files are modified, you must cause the modified

   files to carry prominent notices stating that you changed

   the files and the date of any change.

Disclaimer

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS''

  AND ANY EXPRESSED 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 THE COPYRIGHT HOLDERS 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.

===============================================================================

argparse

argparse is (c) 2006-2009 Steven J. Bethard <steven.bethard@gmail.com>.

The argparse module was contributed to Python as of Python 2.7 and thus

was licensed under the Python license. Same license applies to all files in

the argparse package project.

For details about the Python License, please see LICENSE.PYTHON.