License of libzrtp for usage with FreeSWITCH?
Hi, Does anyone know what the license is of libzrtp for usage with FreeSWITCH? In the FreeSWITCH source I see a file docs/zrtp_agpl-3.0.txt but the libzrtp source itself is not included. So I got libzrtp-0.81.514 and in the source there is a file zrtp_legal.c that says: * libZRTP SDK library, implements the ZRTP secure VoIP protocol. * Copyright (c) 2006-2009 Philip R. Zimmermann. All rights reserved. * * The version of the SDK library that is packaged with this legal notice is * NOT licensed under the GPL, AGPL, LGPL, or any other open source license. * For licensing terms or other information, * contact Philip R. Zimmermann <prz@mit.edu>. * For more contact information, see http://philzimmermann.com * * This file must be packaged together with the rest of the libZRTP SDK * source code. That's why it's in a .c file. * * This software may be subject to export controls by the US Commerce * Department's Bureau of Industry and Security. This software is provided * "as is," with no warranty expressed or implied. This is quite the opposite of what zrtp_agpl-3.0.txt suggests in the FreeSWITCH source. Any ideas? Regards, Patrick
Patrick Since we do not ship with the lib its up to the end user to combine them. So the license concern is not an issue for the FreeSWITCH project. Its now on you to comply with all the licensing. Thanks, Brian On Sep 30, 2010, at 8:55 PM, Patrick Lists wrote:
Hi,
Does anyone know what the license is of libzrtp for usage with FreeSWITCH? In the FreeSWITCH source I see a file docs/zrtp_agpl-3.0.txt but the libzrtp source itself is not included.
So I got libzrtp-0.81.514 and in the source there is a file zrtp_legal.c that says:
* libZRTP SDK library, implements the ZRTP secure VoIP protocol. * Copyright (c) 2006-2009 Philip R. Zimmermann. All rights reserved. * * The version of the SDK library that is packaged with this legal notice is * NOT licensed under the GPL, AGPL, LGPL, or any other open source license. * For licensing terms or other information, * contact Philip R. Zimmermann <prz@mit.edu>. * For more contact information, see http://philzimmermann.com * * This file must be packaged together with the rest of the libZRTP SDK * source code. That's why it's in a .c file. * * This software may be subject to export controls by the US Commerce * Department's Bureau of Industry and Security. This software is provided * "as is," with no warranty expressed or implied.
This is quite the opposite of what zrtp_agpl-3.0.txt suggests in the FreeSWITCH source.
Any ideas?
Regards, Patrick
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On http://zfoneproject.com/lic_policy.html it's written that the libzrtp is licensed under AGPL and only zfone it's not under AGPL. It sounds just like a typo / not updated statement in the code as the website refer to AGPL licensed. Fabio On 01/10/10 15.56, Brian West wrote:
Patrick Since we do not ship with the lib its up to the end user to combine them. So the license concern is not an issue for the FreeSWITCH project. Its now on you to comply with all the licensing.
Thanks, Brian
On 10/01/2010 05:32 PM, Fabio Pietrosanti (naif) wrote:
On http://zfoneproject.com/lic_policy.html it's written that the libzrtp is licensed under AGPL and only zfone it's not under AGPL.
It sounds just like a typo / not updated statement in the code as the website refer to AGPL licensed.
Fabio
Thanks Fabio. All clear now. Regards, Patrick
Fabio Pietrosanti (naif) wrote:
On http://zfoneproject.com/lic_policy.html it's written that the libzrtp is licensed under AGPL and only zfone it's not under AGPL. Cool and thanks for the link. I believe this will be available for the next releases of FS. This way, we all can do a secured communication and not worry being evesdropped.
BTW, is this AGPL for libzrtp governed by US export law? If yes, then I reckon it may not be a good idea to include in the next FS releases. ----- don't and stop are the ONLY two 4-letter words considered offensive to men, but not when used together. -- View this message in context: http://freeswitch-users.2379917.n2.nabble.com/License-of-libzrtp-for-usage-w... Sent from the freeswitch-users mailing list archive at Nabble.com.
On 10/01/2010 03:56 PM, Brian West wrote:
Patrick Since we do not ship with the lib its up to the end user to combine them. So the license concern is not an issue for the FreeSWITCH project. Its now on you to comply with all the licensing.
Thanks, Brian
Hi Brian, Thank you for your feedback. Regards, Patrick
Patrick Lists wrote:
... I see a file docs/zrtp_agpl-3.0.txt but the libzrtp source itself is not included. Perhaps, the docs/zrtp_agpl-3.0.txt license is meant for the ZRTP sound files included in the FS distro.
----- don't and stop are the ONLY two 4-letter words considered offensive to men, but not when used together. -- View this message in context: http://freeswitch-users.2379917.n2.nabble.com/License-of-libzrtp-for-usage-w... Sent from the freeswitch-users mailing list archive at Nabble.com.
participants (4)
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Brian West
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Fabio Pietrosanti (naif)
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mazilo
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Patrick Lists