Third-Party Notices
Everstra includes the following third-party components. These components remain solely under their respective licenses. Nothing in the Everstra End User License Agreement limits any rights granted to you by these third-party licenses.
1. ACAP Helper Library
Author: Fred Juhlin
Source: https://github.com/pandosme
License: MIT License
Copyright (c) 2025 Fred Juhlin 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.
2. cJSON
Author: Dave Gamble and cJSON contributors
Source: https://github.com/DaveGamble/cJSON
Version: 1.7.18
License: MIT License
Copyright (c) 2009-2017 Dave Gamble and cJSON contributors 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.
3. TweetNaCl
Author: Daniel J. Bernstein, Tanja Lange, Peter Schwabe
Source: https://tweetnacl.cr.yp.to
Version: 20140427
License: Public Domain
TweetNaCl is a compact implementation of the NaCl cryptographic library. Everstra uses it solely for Ed25519 signature verification in the license module. TweetNaCl is in the public domain.
4. FFmpeg (Everstra Live)
Source: https://ffmpeg.org
Version: 6.1.2
License: GNU Lesser General Public License v2.1 or later (LGPLv2.1+)
Everstra Live and Everstra Capture each bundle their own, separately compiled FFmpeg
binary, with different ./configure flags and different statically linked
dependencies — this section covers Live's build specifically. Capture's own,
differently configured FFmpeg build has its own notice under
“FFmpeg (Everstra Capture)”.
FFmpeg is bundled as a separate binary and is executed as an independent process. It is NOT linked into the Everstra application code. FFmpeg's own libraries, together with GnuTLS and its dependencies (see below), are statically linked into that binary; the system C library (glibc) is linked dynamically against the one provided by the camera firmware.
The FFmpeg binary distributed with Everstra is built without the
--enable-gpl configuration option and is therefore provided under the LGPLv2.1+.
The complete corresponding source code for the exact FFmpeg version bundled in this distribution (FFmpeg 6.1.2), together with the build configuration used to produce the binary, is available at:
https://everstra.com/source/
This corresponding source will be made available for at least three (3) years from the date of distribution. The Author will also provide it on request via info@everstra.com.
In accordance with the LGPL, the complete build configuration (the Dockerfile, including all configure flags and the exact versions of every statically linked library) is published together with the sources. This allows a recipient to rebuild the FFmpeg binary with a modified or newer version of any LGPL library it contains.
5. GnuTLS
Source: https://www.gnutls.org
Version: 3.8.5
License: GNU Lesser General Public License v2.1 or later (LGPLv2.1+)
GnuTLS is statically compiled into the FFmpeg binary bundled with Everstra Live to enable TLS, HTTPS, and RTMPS support. It is NOT linked into the Everstra application code.
Copyright (C) 2000-2024 Free Software Foundation, Inc. and individual contributors. See https://www.gnutls.org for full copyright and attribution details.
The corresponding source code and build instructions are available together with the FFmpeg source at https://everstra.com/source/.
6. Nettle (including Hogweed)
Source: https://www.lysator.liu.se/~nisse/nettle/
Version: 3.9.1
License: GNU Lesser General Public License v3 or later (LGPLv3+)
Nettle is statically compiled into the FFmpeg binary bundled with Everstra Live as a cryptographic dependency of GnuTLS. It is NOT linked into the Everstra application code.
Copyright (C) 2001-2022 Niels Möller and contributors.
The corresponding source code and build instructions are available together with the FFmpeg source at https://everstra.com/source/.
7. libtasn1
Source: https://www.gnu.org/software/libtasn1/
Version: 4.19.0
License: GNU Lesser General Public License v2.1 or later (LGPLv2.1+)
libtasn1 is statically compiled into the FFmpeg binary bundled with Everstra Live as a dependency of GnuTLS. It is NOT linked into the Everstra application code.
Copyright (C) 2002-2023 Free Software Foundation, Inc.
The corresponding source code and build instructions are available together with the FFmpeg source at https://everstra.com/source/.
8. GMP
Source: https://gmplib.org
Version: 6.3.0
License: GNU Lesser General Public License v3 or later (LGPLv3+)
GMP (GNU Multiple Precision Arithmetic Library) is statically compiled into the FFmpeg binary bundled with Everstra Live as a dependency of GnuTLS and Nettle. It is NOT linked into the Everstra application code.
Copyright (C) 1991-2023 Free Software Foundation, Inc.
The corresponding source code and build instructions are available together with the FFmpeg source at https://everstra.com/source/.
9. FFmpeg (Everstra Capture)
Source: https://ffmpeg.org
Version: 6.1.2
License: GNU Lesser General Public License v2.1 or later (LGPLv2.1+)
Everstra Capture bundles its own, separately compiled and statically linked FFmpeg binary — a different component whitelist than Live's: no networking/TLS at all (Timelapse and Intraday need none), a concat and JPEG-pipe demuxer, an mp4 muxer, and the openh264 video encoder (see below) instead of Live's GnuTLS/Nettle/libtasn1/GMP chain. Capture's FFmpeg links none of those.
It is bundled as a separate binary and executed as an independent process. It is NOT linked into the Everstra application code.
The FFmpeg binary distributed with Everstra Capture is built without
the --enable-gpl configuration option and therefore is provided under the
LGPLv2.1+.
The complete corresponding source code (the same upstream FFmpeg 6.1.2 release used for Live) together with Capture's own build configuration (a separate Dockerfile, since the configure flags differ from Live's) is available at:
https://everstra.com/source/
This corresponding source will be made available for at least three (3) years from the date of distribution. The Author will also provide it on request via info@everstra.com.
10. openh264
Source: https://github.com/cisco/openh264
Version: 2.6.0
License: BSD 2-Clause License
Capture's FFmpeg build statically links openh264 as its H.264 video encoder (libopenh264), used by Timelapse and Intraday to encode captured frames to MP4. It is NOT linked into the Everstra application code, only into the separate FFmpeg binary.
openh264 was chosen over libx264 specifically because it is not GPL-licensed —
linking a GPL-licensed encoder would put the whole binary under GPL terms, which this
project deliberately avoids (the same reasoning behind building FFmpeg itself without
--enable-gpl).
Copyright (c) 2013, Cisco Systems. All rights reserved.
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.
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 HOLDER 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 BSD license does not require source distribution, but the complete corresponding source code is provided regardless, at https://everstra.com/source/ (the unmodified upstream release).
11. Skia Graphics Library
Source: https://skia.org
Branch: chrome/m130
License: BSD 3-Clause License
Skia is used by Everstra Overlay as the text and graphics rendering engine for text crawl overlays. It is statically compiled into the Overlay application binary.
Copyright (c) 2011 Google 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:
* 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 name of the copyright holder 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.
12. DejaVu Fonts
Source: https://dejavu-fonts.github.io
License: Bitstream Vera Fonts License (with reserved font name "DejaVu")
DejaVu Sans is bundled with Everstra Overlay as the default font for text overlays. The DejaVu fonts are based on the Bitstream Vera fonts.
Fonts are (c) Bitstream (see below). DejaVu changes are in public domain.
Copyright (c) 2003 by Bitstream, Inc. All Rights Reserved. Bitstream Vera is
a trademark of Bitstream, Inc. Permission is hereby granted, free of charge,
to any person obtaining a copy of the fonts accompanying this license
("Fonts") and associated documentation files (the "Font Software"), to
reproduce and distribute the Font Software, including without limitation the
rights to use, copy, merge, publish, distribute, and/or sell copies of the
Font Software, and to permit persons to whom the Font Software is furnished
to do so, subject to the following conditions:
The above copyright and trademark notices and this permission notice shall
be included in all copies of one or more of the Font Software typefaces.
The Font Software may be modified, altered, or added to, and in particular
the designs of glyphs or characters in the Fonts may be modified and
additional glyphs or characters may be added to the Fonts, only if the fonts
are renamed to names not containing either the words "Bitstream" or the word
"Vera".
THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
TRADEMARK, OR OTHER RIGHT.
13. Bootstrap
Source: https://getbootstrap.com
Version: 5.3.3
License: MIT License
Copyright (c) 2011-2024 The Bootstrap Authors 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.
14. Weather Icons
Source: https://github.com/erikflowers/weather-icons
Version: 2.0.10
License: SIL Open Font License, Version 1.1
Icon designs: Lukas Bischoff (original v1 icon art); icon art from v1.1
forward, plus the project's CSS/Less/HTML tooling (not used here), by Erik Flowers.
Only the compiled font file (weathericons-regular-webfont.ttf) is bundled with Everstra Overlay, embedded unmodified, to render weather condition icons on the Weather overlay. No CSS, Less, HTML, or other source from the weather-icons project is used.
Copyright (c) Erik Flowers, Lukas Bischoff (v1 Art) https://github.com/erikflowers/weather-icons This Font Software is licensed under the SIL Open Font License, Version 1.1. This license is copied below, and is also available with a FAQ at: https://openfontlicense.org SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007 PREAMBLE The goals of the Open Font License (OFL) are to stimulate worldwide development of collaborative font projects, to support the font creation efforts of academic and linguistic communities, and to provide a free and open framework in which fonts may be shared and improved in partnership with others. The OFL allows the licensed fonts to be used, studied, modified and redistributed freely as long as they are not sold by themselves. The fonts, including any derivative works, can be bundled, embedded, redistributed and/or sold with any software provided that any reserved names are not used by derivative works. The fonts and derivatives, however, cannot be released under any other type of license. The requirement for fonts to remain under this license does not apply to any document created using the fonts or their derivatives. DEFINITIONS "Font Software" refers to the set of files released by the Copyright Holder(s) under this license and clearly marked as such. This may include source files, build scripts and documentation. "Reserved Font Name" refers to any names specified as such after the copyright statement(s). "Original Version" refers to the collection of Font Software components as distributed by the Copyright Holder(s). "Modified Version" refers to any derivative made by adding to, deleting, or substituting -- in part or in whole -- any of the components of the Original Version, by changing formats or by porting the Font Software to a new environment. "Author" refers to any designer, engineer, programmer, technical writer or other person who contributed to the Font Software. PERMISSION & CONDITIONS Permission is hereby granted, free of charge, to any person obtaining a copy of the Font Software, to use, study, copy, merge, embed, modify, redistribute, and sell modified and unmodified copies of the Font Software, subject to the following conditions: 1) Neither the Font Software nor any of its individual components, in Original or Modified Versions, may be sold by itself. 2) Original or Modified Versions of the Font Software may be bundled, redistributed and/or sold with any software, provided that each copy contains the above copyright notice and this license. These can be included either as stand-alone text files, human-readable headers or in the appropriate machine-readable metadata fields within text or binary files as long as those fields can be easily viewed by the user. 3) No Modified Version of the Font Software may use the Reserved Font Name(s) unless explicit written permission is granted by the corresponding Copyright Holder. This restriction only applies to the primary font name as presented to the users. 4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font Software shall not be used to promote, endorse or advertise any Modified Version, except to acknowledge the contribution(s) of the Copyright Holder(s) and the Author(s) or with their explicit written permission. 5) The Font Software, modified or unmodified, in part or in whole, must be distributed entirely under this license, and must not be distributed under any other license. The requirement for fonts to remain under this license does not apply to any document created using the Font Software. TERMINATION This license becomes null and void if any of the above conditions are not met. DISCLAIMER THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM OTHER DEALINGS IN THE FONT SOFTWARE.
15. FreeType
Source: https://freetype.org
Version: 2.14.3
License: The FreeType License (FTL, a BSD-style license)
FreeType is statically compiled into the Everstra Overlay application binary as the font rasterizer bundled with the Skia rendering engine. It is used to render text overlays. Everstra uses FreeType under the FreeType License (FTL); FreeType is also available under the GNU General Public License v2, which Everstra does not use.
Portions of this software are copyright © 2006-2024 The FreeType Project (www.freetype.org). All rights reserved.
Copyright 1996-2024 by David Turner, Robert Wilhelm, and Werner Lemberg.
16. Open-Meteo weather data
Source: https://open-meteo.com
License: Creative Commons Attribution 4.0 International (CC BY 4.0)
The Weather overlay in Everstra Overlay displays current weather and forecast data retrieved at run time from the Open-Meteo API. This data is provided by Open-Meteo (https://open-meteo.com) under the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/).
No Open-Meteo source code is bundled with Everstra. The Weather overlay shows the required "Weather data by Open-Meteo" attribution on the live image.
17. libjpeg-turbo
Source: https://github.com/libjpeg-turbo/libjpeg-turbo
Version: 3.0.1
License: Three compatible BSD-style licenses (IJG License, Modified BSD License,
zlib License) — see below.
libjpeg-turbo is statically compiled into the Everstra Capture and Everstra Overlay application binaries (as a vendored static library, not a system dependency — the Axis ACAP SDK ships jpeglib.h and a pkg-config file but no actual linkable library). Both modules use the same vendored 3.0.1 build.
In Everstra Capture it decodes and re-encodes JPEG images for gallery thumbnails, and the Startrail compositor uses it to decode captured frames. In Everstra Overlay it decodes JPEG images a user selects as a graphic overlay. It is NOT linked into Everstra Live.
This software is based in part on the work of the Independent JPEG Group.
Copyright (C) 1991-2020, Thomas G. Lane, Guido Vollbeding.
Copyright (C) 2009-2023 D. R. Commander. All Rights Reserved.
Copyright (C) 2015 Viktor Szathmáry. All Rights Reserved.
IJG License (covers the libjpeg API library)
Permission is hereby granted to use, copy, modify, and distribute this
software (or portions thereof) for any purpose, without fee, subject to
these conditions:
(1) If any part of the source code for this software is distributed, then
this README file must be included, with this copyright and no-warranty
notice unaltered; and any additions, deletions, or changes to the
original files must be clearly indicated in accompanying documentation.
(2) If only executable code is distributed, then the accompanying
documentation must state that "this software is based in part on the
work of the Independent JPEG Group".
(3) Permission for use of this software is granted only if the user accepts
full responsibility for any undesirable consequences; the authors accept
NO LIABILITY for damages of any kind.
These conditions apply to any software derived from or based on the IJG
code, not just to the unmodified library. If you use our work, you ought to
acknowledge us.
Permission is NOT granted for the use of any IJG author's name or company
name in advertising or publicity relating to this software or products
derived from it. This software may be referred to only as "the Independent
JPEG Group's software".
Modified (3-clause) BSD License (covers the TurboJPEG API and build system)
Copyright (C) 2009-2023 D. R. Commander. All Rights Reserved.
Copyright (C) 2015 Viktor Szathmáry. All Rights Reserved.
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 name of the libjpeg-turbo Project 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 HOLDERS 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.
zlib License (covers the SIMD extensions in the source tree)
This software is provided 'as-is', without any express or implied warranty.
In no event will the authors be held liable for any damages arising from the
use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software in
a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
18. libpng
Source: http://www.libpng.org/pub/png/libpng.html
Version: 1.6.43
License: PNG Reference Library License version 2
libpng is statically compiled into the Everstra Overlay application binary. It is bundled inside the Skia rendering engine rather than linked separately, and Skia uses it to decode and encode the PNG images a user selects as a graphic overlay. It is NOT linked into Everstra Live or Everstra Capture.
* Copyright (c) 1995-2024 The PNG Reference Library Authors.
* Copyright (c) 2018-2024 Cosmin Truta.
* Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson.
* Copyright (c) 1996-1997 Andreas Dilger.
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
The software is supplied "as is", without warranty of any kind,
express or implied, including, without limitation, the warranties
of merchantability, fitness for a particular purpose, title, and
non-infringement. In no event shall the Copyright owners, or
anyone distributing the software, be liable for any damages or
other liability, whether in contract, tort or otherwise, arising
from, out of, or in connection with the software, or the use or
other dealings in the software, even if advised of the possibility
of such damage.
Permission is hereby granted to use, copy, modify, and distribute
this software, or portions hereof, for any purpose, without fee,
subject to the following restrictions:
1. The origin of this software must not be misrepresented; you
must not claim that you wrote the original software. If you
use this software in a product, an acknowledgment in the product
documentation would be appreciated, but is not required.
2. Altered source versions must be plainly marked as such, and must
not be misrepresented as being the original software.
3. This Copyright notice may not be removed or altered from any
source or altered source distribution.
The upstream LICENSE file also carries PNG Reference Library License version 1, which applies to libpng 0.5 through 1.6.35. Everstra bundles 1.6.43, so version 2 above is the applicable licence.
19. zlib
Source: https://zlib.net
Version: 1.3.2.1-motley
License: zlib License
zlib is statically compiled into the Everstra Overlay application binary. Like libpng it is bundled inside the Skia rendering engine; libpng and Skia use it for the deflate compression inside PNG files. Everstra Live and Everstra Capture do not bundle zlib — their FFmpeg binaries link the camera's system zlib dynamically instead.
Copyright notice:
(C) 1995-2026 Jean-loup Gailly and Mark Adler
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
Jean-loup Gailly Mark Adler
jloup@gzip.org madler@alumni.caltech.edu
20. Wuffs
Source: https://github.com/google/wuffs
Version: 0.3.3+3399.20230408
License: Apache License, Version 2.0
Wuffs (Wrangling Untrusted File Formats Safely) is statically compiled into the Everstra Overlay application binary. It is bundled inside the Skia rendering engine, which uses it as the memory-safe decoder behind SkWuffsCodec for animated image formats such as GIF. It is NOT linked into Everstra Live or Everstra Capture.
Copyright 2017 The Wuffs Authors.
Wuffs does not ship a NOTICE text file, so there is no attribution notice to carry over under section 4(d) of the licence. The complete licence text follows as required by section 4(a).
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
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21. skcms
Source: https://skia.org (Skia module modules/skcms)
Version: shipped with Skia branch chrome/m130
License: BSD 3-Clause License
skcms is Skia's colour management library. It is statically compiled into the Everstra Overlay application binary as part of the Skia rendering engine and converts colour profiles when overlay images are drawn. It cannot be disabled and is always present when Skia is. It is NOT linked into Everstra Live or Everstra Capture.
skcms lives inside the Skia source tree (modules/skcms) and ships no separate
licence file of its own; its sources carry "Copyright 2018 Google Inc." and refer to Skia's
own LICENSE, which is reproduced here for completeness. It is therefore the same licence
text as the Skia section above.
Copyright 2018 Google Inc.
Copyright (c) 2011 Google 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:
* 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 name of the copyright holder 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.
22. Eclipse Paho MQTT C Client Library
Source: https://github.com/eclipse-paho/paho.mqtt.c
Version: 1.3.16
Library: libpaho-mqtt3as (async, TLS-enabled variant)
License: Eclipse Distribution License v1.0 (EDL, BSD-3-Clause style)
Bundled, static. Everstra Hub cross-compiles this library from source and links it statically into the application binary. The version above is the one in the shipped package and can be verified from it.
An earlier draft used the camera firmware's own copy instead. That was dropped deliberately: it tied a security-relevant library to whatever version the operator's firmware happened to carry, and a library Everstra cannot state, patch or place in its security update process is not one Everstra should depend on.
Modified. One patch is applied to the source before it is built,
everstra-hub/patches/paho-1.3.16-sni-ip-literal.patch. It stops the library from
aborting a TLS connection when the broker is addressed by IP: RFC 6066 forbids an IP literal in
the SNI extension, so SSL_set_tlsext_host_name() refuses it, and the library let
that refusal escape as its own return value, which its caller read as a connection failure. The
patch skips the SNI call for an IP literal and changes nothing else. It is not upstream.
Eclipse Paho is dual-licensed under the Eclipse Public License v2.0 and the Eclipse Distribution License v1.0. Everstra elects the Eclipse Distribution License v1.0, reproduced below.
Eclipse Distribution License - v 1.0
Copyright (c) 2007, Eclipse Foundation, Inc. and its licensors. All rights
reserved.
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 name of the Eclipse Foundation, Inc. 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
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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.
23. LibreSSL
Source: https://www.libressl.org
Version: 4.3.2
License: ISC License, plus the OpenSSL and SSLeay licences for inherited code
Bundled, static. LibreSSL is the TLS backend of the Eclipse Paho MQTT client above. It is cross-compiled from source and linked statically into Everstra Hub; the camera firmware's own OpenSSL is deliberately not used, for the reason given in section 22.
Eclipse Paho supports exactly two TLS backends, OpenSSL and LibreSSL. LibreSSL was chosen because, statically linked for this target, it is roughly three times smaller than OpenSSL 3.x and carries a smaller attack surface.
The CA certificate bundle shipped alongside it is the Mozilla CA certificate list as
distributed by Debian/Ubuntu's ca-certificates package, used under MPL 2.0. It is
data, not code.
ISC License
Copyright (c) The OpenBSD Project and contributors Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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.]
Code inherited from OpenSSL remains under the OpenSSL and SSLeay licences, both BSD-style. Both require retention of the copyright notices and disclaimers, which this notice provides, and neither imposes conditions beyond attribution.