ACADEMIC PUBLIC LICENSE

Copyright (C) 2016 Tamas K Lengyel

Preamble

This license contains the terms and conditions of using this training material,
herein after referred to as MATERIAL, in noncommercial settings: at academic
institutions for teaching and research use, and at non-profit research
organizations. You will find that this license provides noncommercial users of
MATERIAL with rights that are similar to the well-known GNU General Public
License, yet it retains the possibility for MATERIAL authors to financially
support the development by selling commercial licenses. In fact, if you intend
to use MATERIAL in a "for-profit" environment, where research is conducted to
develop or enhance a product, is used in a commercial service offering, or when
a commercial company uses MATERIAL to participate in a research project (for
example government-funded or EU-funded research projects), then you need to
obtain a commercial license for MATERIAL. In that case, please contact Tamas K
Lengyel to inquire about commercial licenses.

What are the rights given to noncommercial users? Similarly to GPL, you have
the right to use the software, to distribute copies, to receive source code,
to change the software and distribute your modifications or the modified
software. Also similarly to the GPL, if you distribute verbatim or modified
copies of this software, they must be distributed under this license.

By modeling the GPL, this license guarantees that you're safe when using
MATERIAL in your work, for teaching or research. This license guarantees that
MATERIAL will remain available free of charge for nonprofit use. You can modify
MATERIAL to your purposes, and you can also share your modifications. Even in
the unlikely case of the authors abandoning MATERIAL entirely, this license
permits anyone to continue developing it from the last release, and to create
further releases under this license.

The precise terms and conditions for using, copying, distribution and
modification follow.

ACADEMIC PUBLIC LICENSE

TERMS AND CONDITIONS FOR USE, COPYING, DISTRIBUTION AND MODIFICATION

0. Definitions

"MATERIAL" means a copy of MATERIAL, which is said to be distributed under this
Academic Public License.

"Work based on the MATERIAL" means either the MATERIAL or any derivative work
under copyright law: that is to say, a work containing the MATERIAL or a portion
of it, either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in the term
"modification".)

"Using the MATERIAL" means any act of creating executables that contain or
directly use libraries that are part of the MATERIAL, running any of the tools
that are part of the MATERIAL, or creating works based on the MATERIAL.

Each licensee is addressed as "you".

1. Permission is hereby granted to use the MATERIAL free of charge for any
noncommercial purpose, including teaching and research at universities,
colleges and other educational institutions, research at non-profit research
institutions, and personal non-profit purposes. For using the MATERIAL for
commercial purposes, including but not restricted to consulting activities,
design of commercial hardware or software networking products, and a commercial
entity participating in research projects, you have to contact the Author for
an appropriate license. Permission is also granted to use the MATERIAL for a
reasonably limited period of time for the purpose of evaluating its usefulness
for a particular purpose.

2. You may copy and distribute verbatim copies of the MATERIAL's source code as
you receive it, in any medium, provided that you conspicuously and
appropriately publish on each copy an appropriate copyright notice and
disclaimer of warranty; keep intact all the notices that refer to this License
and to the absence of any warranty; and give any other recipients of the
MATERIAL a copy of this License along with the MATERIAL.

3. You may modify your copy or copies of the MATERIAL or any portion of it,
thus forming a work based on the MATERIAL, and copy and distribute such
modifications or work under the terms of Section 2 above, provided that you
also meet all of these conditions:

    a) You must cause the modified files to carry prominent notices stating
that you changed the files and the date of any change.

    b) You must cause any work that you distribute or publish, that in whole
or in part contains or is derived from the MATERIAL or any part thereof, to be
licensed as a whole at no charge to all third parties under the terms of this
License.

These requirements apply to the modified work as a whole. If identifiable
sections of that work are not derived from the MATERIAL, and can be reasonably
considered independent and separate works in themselves, then this License, and
its terms, do not apply to those sections when you distribute them as separate
works. But when you distribute the same sections as part of a whole which is a
work based on the MATERIAL, the distribution of the whole must be on the terms
of this License, whose regulations for other licensees extend to the entire
whole, and thus to each and every part regardless of who wrote it. (If the
same, independent sections are distributed as part of a package that is
otherwise reliant on, or is based on the MATERIAL, then the distribution of the
whole package, including but not restricted to the independent section, must be
on the unmodified terms of this License, regadless of who the author of the
included sections was.)

Thus, it is not the intent of this section to claim rights or contest your
rights to work written entirely by you; rather, the intent is to exercise the
right to control the distribution of derivative or collective works based or
reliant on the MATERIAL.

In addition, mere aggregation of another work not based on the MATERIAL with
the MATERIAL (or with a work based on the MATERIAL) on a volume of storage or
distribution medium does not bring the other work under the scope of this
License.

4. You may copy and distribute the MATERIAL (or a work based on it, under
Section 3) in object code or executable form under the terms of Sections 2 and
3 above provided that you also do one of the following:

    a) Accompany it with the complete corresponding machine-readable source
code, which must be distributed under the terms of Sections 2 and 3 above on a
medium customarily used for software interchange; or,

    b) Accompany it with a written offer, valid for at least three years, to
give any third party, for a charge no more than your cost of physically
performing source distribution, a complete machine-readable copy of the
corresponding source code, to be distributed under the terms of Sections 2 and
3 above on a medium customarily used for software interchange; or,

    c) Accompany it with the information you received as to the offer to
distribute corresponding source code. (This alternative is allowed only for
noncommercial distribution and only if you received the MATERIAL in object
code or executable form with such an offer, in accord with Subsection b) above.)

The source code for a work means the preferred form of the work for making
modifications to it. For an executable work, complete source code means all
the source code for all modules it contains, plus any associated interface
definition files, plus the scripts used to control compilation and installation
of the executable. However, as a special exception, the source code distributed
need not include anything that is normally distributed (in either source or binary
form) with the major components (compiler, kernel, and so on) of the operating
system on which the executable runs, unless that component itself accompanies
the executable.

If distribution of executable or object code is made by offering access to copy
from a designated place, then offering equivalent access to copy the source code
from the same place counts as distribution of the source code, even though third
parties are not compelled to copy the source along with the object code.

5. You may not copy, modify, sublicense, or distribute the MATERIAL except as
expressly provided under this License. Any attempt otherwise to copy, modify,
sublicense or distribute the MATERIAL is void, and will automatically terminate
your rights under this License. However, parties who have received copies, or
rights, from you under this License will not have their licenses terminated so
long as such parties remain in full compliance.

6. You are not required to accept this License, since you have not signed it.
Nothing else grants you permission to modify or distribute the MATERIAL or its
derivative works; law prohibits these actions if you do not accept this License.
Therefore, by modifying or distributing the MATERIAL (or any work based on the
MATERIAL), you indicate your acceptance of this License and all its terms and
conditions for copying, distributing or modifying the MATERIAL or works based
on it, to do so.

7. Each time you redistribute the MATERIAL (or any work based on the MATERIAL),
the recipient automatically receives a license from the original licensor to
copy, distribute or modify the MATERIAL subject to these terms and conditions.
You may not impose any further restrictions on the recipients' exercise of the
rights granted herein. You are not responsible for enforcing compliance by
third parties to this License.

8. If, as a consequence of a court judgment or allegation of patent infringement
or for any other reason (not limited to patent issues), conditions are imposed
on you (whether by court order, agreement or otherwise) that contradict the
conditions of this License, they do not excuse you from the conditions of this
License. If you cannot distribute so as to satisfy simultaneously your
obligations under this License and any other pertinent obligations, then as
a consequence you may not distribute the MATERIAL at all. For example, if a
patent license would not permit royalty-free redistribution of the MATERIAL
by all those who receive copies directly or indirectly through you, then the
only way you could satisfy both it and this License would be to refrain entirely
from distribution of the MATERIAL.

If any portion of this section is held invalid or unenforceable under any
particular circumstance, the balance of the section is intended to apply
and the section as a whole is intended to apply in other circumstances.

9. If the distribution and/or use of the MATERIAL are restricted in certain
countries either by patents or by copyrighted interfaces, the original copyright
holder who places the MATERIAL under this License may add an explicit geographical
distribution limitation excluding those countries, so that distribution is
permitted only in or among countries not thus excluded. In such case, this License
incorporates the limitation as if written in the body of this License.

NO WARRANTY

10. BECAUSE THE MATERIAL IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE
MATERIAL, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED
IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE MATERIAL "AS IS"
WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE MATERIAL IS WITH YOU.
SHOULD THE MATERIAL PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.

11. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED ON IN WRITING WILL ANY
COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE MATERIAL
AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL,
INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
MATERIAL INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE
OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE MATERIAL TO OPERATE
WITH ANY OTHER MATERIALS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.

END OF TERMS AND CONDITIONS
NOTE In case the above text differs from the license file in the source distribution,
the latter is the valid one.