README, LICENSE, and general user friendliness
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GNU GENERAL PUBLIC LICENSE
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Version 3, 29 June 2007
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Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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Everyone is permitted to copy and distribute verbatim copies
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of this license document, but changing it is not allowed.
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Preamble
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The GNU General Public License is a free, copyleft license for
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software and other kinds of works.
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The licenses for most software and other practical works are designed
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to take away your freedom to share and change the works. By contrast,
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the GNU General Public License is intended to guarantee your freedom to
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share and change all versions of a program--to make sure it remains free
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software for all its users. We, the Free Software Foundation, use the
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GNU General Public License for most of our software; it applies also to
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any other work released this way by its authors. You can apply it to
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your programs, too.
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When we speak of free software, we are referring to freedom, not
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price. Our General Public Licenses are designed to make sure that you
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have the freedom to distribute copies of free software (and charge for
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them if you wish), that you receive source code or can get it if you
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want it, that you can change the software or use pieces of it in new
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free programs, and that you know you can do these things.
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To protect your rights, we need to prevent others from denying you
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|
these rights or asking you to surrender the rights. Therefore, you have
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|
certain responsibilities if you distribute copies of the software, or if
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you modify it: responsibilities to respect the freedom of others.
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For example, if you distribute copies of such a program, whether
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gratis or for a fee, you must pass on to the recipients the same
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|
freedoms that you received. You must make sure that they, too, receive
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or can get the source code. And you must show them these terms so they
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know their rights.
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||||||
|
Developers that use the GNU GPL protect your rights with two steps:
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|
(1) assert copyright on the software, and (2) offer you this License
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||||||
|
giving you legal permission to copy, distribute and/or modify it.
|
||||||
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||||||
|
For the developers' and authors' protection, the GPL clearly explains
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|
that there is no warranty for this free software. For both users' and
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|
authors' sake, the GPL requires that modified versions be marked as
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|
changed, so that their problems will not be attributed erroneously to
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|
authors of previous versions.
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||||||
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|
Some devices are designed to deny users access to install or run
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|
modified versions of the software inside them, although the manufacturer
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|
can do so. This is fundamentally incompatible with the aim of
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|
protecting users' freedom to change the software. The systematic
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|
pattern of such abuse occurs in the area of products for individuals to
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use, which is precisely where it is most unacceptable. Therefore, we
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have designed this version of the GPL to prohibit the practice for those
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products. If such problems arise substantially in other domains, we
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stand ready to extend this provision to those domains in future versions
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of the GPL, as needed to protect the freedom of users.
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|
Finally, every program is threatened constantly by software patents.
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|
States should not allow patents to restrict development and use of
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|
software on general-purpose computers, but in those that do, we wish to
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avoid the special danger that patents applied to a free program could
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make it effectively proprietary. To prevent this, the GPL assures that
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patents cannot be used to render the program non-free.
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The precise terms and conditions for copying, distribution and
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modification follow.
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TERMS AND CONDITIONS
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0. Definitions.
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"This License" refers to version 3 of the GNU General Public License.
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"Copyright" also means copyright-like laws that apply to other kinds of
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works, such as semiconductor masks.
|
||||||
|
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|
"The Program" refers to any copyrightable work licensed under this
|
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|
License. Each licensee is addressed as "you". "Licensees" and
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|
"recipients" may be individuals or organizations.
|
||||||
|
|
||||||
|
To "modify" a work means to copy from or adapt all or part of the work
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|
in a fashion requiring copyright permission, other than the making of an
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|
exact copy. The resulting work is called a "modified version" of the
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|
earlier work or a work "based on" the earlier work.
|
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|
|
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|
A "covered work" means either the unmodified Program or a work based
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|
on the Program.
|
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|
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|
To "propagate" a work means to do anything with it that, without
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|
permission, would make you directly or secondarily liable for
|
||||||
|
infringement under applicable copyright law, except executing it on a
|
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|
computer or modifying a private copy. Propagation includes copying,
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|
distribution (with or without modification), making available to the
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|
public, and in some countries other activities as well.
|
||||||
|
|
||||||
|
To "convey" a work means any kind of propagation that enables other
|
||||||
|
parties to make or receive copies. Mere interaction with a user through
|
||||||
|
a computer network, with no transfer of a copy, is not conveying.
|
||||||
|
|
||||||
|
An interactive user interface displays "Appropriate Legal Notices"
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||||||
|
to the extent that it includes a convenient and prominently visible
|
||||||
|
feature that (1) displays an appropriate copyright notice, and (2)
|
||||||
|
tells the user that there is no warranty for the work (except to the
|
||||||
|
extent that warranties are provided), that licensees may convey the
|
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|
work under this License, and how to view a copy of this License. If
|
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|
the interface presents a list of user commands or options, such as a
|
||||||
|
menu, a prominent item in the list meets this criterion.
|
||||||
|
|
||||||
|
1. Source Code.
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|
|
||||||
|
The "source code" for a work means the preferred form of the work
|
||||||
|
for making modifications to it. "Object code" means any non-source
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||||||
|
form of a work.
|
||||||
|
|
||||||
|
A "Standard Interface" means an interface that either is an official
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|
standard defined by a recognized standards body, or, in the case of
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|
interfaces specified for a particular programming language, one that
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||||||
|
is widely used among developers working in that language.
|
||||||
|
|
||||||
|
The "System Libraries" of an executable work include anything, other
|
||||||
|
than the work as a whole, that (a) is included in the normal form of
|
||||||
|
packaging a Major Component, but which is not part of that Major
|
||||||
|
Component, and (b) serves only to enable use of the work with that
|
||||||
|
Major Component, or to implement a Standard Interface for which an
|
||||||
|
implementation is available to the public in source code form. A
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|
"Major Component", in this context, means a major essential component
|
||||||
|
(kernel, window system, and so on) of the specific operating system
|
||||||
|
(if any) on which the executable work runs, or a compiler used to
|
||||||
|
produce the work, or an object code interpreter used to run it.
|
||||||
|
|
||||||
|
The "Corresponding Source" for a work in object code form means all
|
||||||
|
the source code needed to generate, install, and (for an executable
|
||||||
|
work) run the object code and to modify the work, including scripts to
|
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|
control those activities. However, it does not include the work's
|
||||||
|
System Libraries, or general-purpose tools or generally available free
|
||||||
|
programs which are used unmodified in performing those activities but
|
||||||
|
which are not part of the work. For example, Corresponding Source
|
||||||
|
includes interface definition files associated with source files for
|
||||||
|
the work, and the source code for shared libraries and dynamically
|
||||||
|
linked subprograms that the work is specifically designed to require,
|
||||||
|
such as by intimate data communication or control flow between those
|
||||||
|
subprograms and other parts of the work.
|
||||||
|
|
||||||
|
The Corresponding Source need not include anything that users
|
||||||
|
can regenerate automatically from other parts of the Corresponding
|
||||||
|
Source.
|
||||||
|
|
||||||
|
The Corresponding Source for a work in source code form is that
|
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|
same work.
|
||||||
|
|
||||||
|
2. Basic Permissions.
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||||||
|
|
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|
All rights granted under this License are granted for the term of
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|
copyright on the Program, and are irrevocable provided the stated
|
||||||
|
conditions are met. This License explicitly affirms your unlimited
|
||||||
|
permission to run the unmodified Program. The output from running a
|
||||||
|
covered work is covered by this License only if the output, given its
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content, constitutes a covered work. This License acknowledges your
|
||||||
|
rights of fair use or other equivalent, as provided by copyright law.
|
||||||
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|
||||||
|
You may make, run and propagate covered works that you do not
|
||||||
|
convey, without conditions so long as your license otherwise remains
|
||||||
|
in force. You may convey covered works to others for the sole purpose
|
||||||
|
of having them make modifications exclusively for you, or provide you
|
||||||
|
with facilities for running those works, provided that you comply with
|
||||||
|
the terms of this License in conveying all material for which you do
|
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|
not control copyright. Those thus making or running the covered works
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|
for you must do so exclusively on your behalf, under your direction
|
||||||
|
and control, on terms that prohibit them from making any copies of
|
||||||
|
your copyrighted material outside their relationship with you.
|
||||||
|
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||||||
|
Conveying under any other circumstances is permitted solely under
|
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|
the conditions stated below. Sublicensing is not allowed; section 10
|
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|
makes it unnecessary.
|
||||||
|
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|
3. Protecting Users' Legal Rights From Anti-Circumvention Law.
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||||||
|
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||||||
|
No covered work shall be deemed part of an effective technological
|
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|
measure under any applicable law fulfilling obligations under article
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|
11 of the WIPO copyright treaty adopted on 20 December 1996, or
|
||||||
|
similar laws prohibiting or restricting circumvention of such
|
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|
measures.
|
||||||
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|
||||||
|
When you convey a covered work, you waive any legal power to forbid
|
||||||
|
circumvention of technological measures to the extent such circumvention
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|
is effected by exercising rights under this License with respect to
|
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the covered work, and you disclaim any intention to limit operation or
|
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|
modification of the work as a means of enforcing, against the work's
|
||||||
|
users, your or third parties' legal rights to forbid circumvention of
|
||||||
|
technological measures.
|
||||||
|
|
||||||
|
4. Conveying Verbatim Copies.
|
||||||
|
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||||||
|
You may convey verbatim copies of the Program's source code as you
|
||||||
|
receive it, in any medium, provided that you conspicuously and
|
||||||
|
appropriately publish on each copy an appropriate copyright notice;
|
||||||
|
keep intact all notices stating that this License and any
|
||||||
|
non-permissive terms added in accord with section 7 apply to the code;
|
||||||
|
keep intact all notices of the absence of any warranty; and give all
|
||||||
|
recipients a copy of this License along with the Program.
|
||||||
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|
||||||
|
You may charge any price or no price for each copy that you convey,
|
||||||
|
and you may offer support or warranty protection for a fee.
|
||||||
|
|
||||||
|
5. Conveying Modified Source Versions.
|
||||||
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|
||||||
|
You may convey a work based on the Program, or the modifications to
|
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|
produce it from the Program, in the form of source code under the
|
||||||
|
terms of section 4, provided that you also meet all of these conditions:
|
||||||
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||||||
|
a) The work must carry prominent notices stating that you modified
|
||||||
|
it, and giving a relevant date.
|
||||||
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|
||||||
|
b) The work must carry prominent notices stating that it is
|
||||||
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released under this License and any conditions added under section
|
||||||
|
7. This requirement modifies the requirement in section 4 to
|
||||||
|
"keep intact all notices".
|
||||||
|
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||||||
|
c) You must license the entire work, as a whole, under this
|
||||||
|
License to anyone who comes into possession of a copy. This
|
||||||
|
License will therefore apply, along with any applicable section 7
|
||||||
|
additional terms, to the whole of the work, and all its parts,
|
||||||
|
regardless of how they are packaged. This License gives no
|
||||||
|
permission to license the work in any other way, but it does not
|
||||||
|
invalidate such permission if you have separately received it.
|
||||||
|
|
||||||
|
d) If the work has interactive user interfaces, each must display
|
||||||
|
Appropriate Legal Notices; however, if the Program has interactive
|
||||||
|
interfaces that do not display Appropriate Legal Notices, your
|
||||||
|
work need not make them do so.
|
||||||
|
|
||||||
|
A compilation of a covered work with other separate and independent
|
||||||
|
works, which are not by their nature extensions of the covered work,
|
||||||
|
and which are not combined with it such as to form a larger program,
|
||||||
|
in or on a volume of a storage or distribution medium, is called an
|
||||||
|
"aggregate" if the compilation and its resulting copyright are not
|
||||||
|
used to limit the access or legal rights of the compilation's users
|
||||||
|
beyond what the individual works permit. Inclusion of a covered work
|
||||||
|
in an aggregate does not cause this License to apply to the other
|
||||||
|
parts of the aggregate.
|
||||||
|
|
||||||
|
6. Conveying Non-Source Forms.
|
||||||
|
|
||||||
|
You may convey a covered work in object code form under the terms
|
||||||
|
of sections 4 and 5, provided that you also convey the
|
||||||
|
machine-readable Corresponding Source under the terms of this License,
|
||||||
|
in one of these ways:
|
||||||
|
|
||||||
|
a) Convey the object code in, or embodied in, a physical product
|
||||||
|
(including a physical distribution medium), accompanied by the
|
||||||
|
Corresponding Source fixed on a durable physical medium
|
||||||
|
customarily used for software interchange.
|
||||||
|
|
||||||
|
b) Convey the object code in, or embodied in, a physical product
|
||||||
|
(including a physical distribution medium), accompanied by a
|
||||||
|
written offer, valid for at least three years and valid for as
|
||||||
|
long as you offer spare parts or customer support for that product
|
||||||
|
model, to give anyone who possesses the object code either (1) a
|
||||||
|
copy of the Corresponding Source for all the software in the
|
||||||
|
product that is covered by this License, on a durable physical
|
||||||
|
medium customarily used for software interchange, for a price no
|
||||||
|
more than your reasonable cost of physically performing this
|
||||||
|
conveying of source, or (2) access to copy the
|
||||||
|
Corresponding Source from a network server at no charge.
|
||||||
|
|
||||||
|
c) Convey individual copies of the object code with a copy of the
|
||||||
|
written offer to provide the Corresponding Source. This
|
||||||
|
alternative is allowed only occasionally and noncommercially, and
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||||||
|
only if you received the object code with such an offer, in accord
|
||||||
|
with subsection 6b.
|
||||||
|
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||||||
|
d) Convey the object code by offering access from a designated
|
||||||
|
place (gratis or for a charge), and offer equivalent access to the
|
||||||
|
Corresponding Source in the same way through the same place at no
|
||||||
|
further charge. You need not require recipients to copy the
|
||||||
|
Corresponding Source along with the object code. If the place to
|
||||||
|
copy the object code is a network server, the Corresponding Source
|
||||||
|
may be on a different server (operated by you or a third party)
|
||||||
|
that supports equivalent copying facilities, provided you maintain
|
||||||
|
clear directions next to the object code saying where to find the
|
||||||
|
Corresponding Source. Regardless of what server hosts the
|
||||||
|
Corresponding Source, you remain obligated to ensure that it is
|
||||||
|
available for as long as needed to satisfy these requirements.
|
||||||
|
|
||||||
|
e) Convey the object code using peer-to-peer transmission, provided
|
||||||
|
you inform other peers where the object code and Corresponding
|
||||||
|
Source of the work are being offered to the general public at no
|
||||||
|
charge under subsection 6d.
|
||||||
|
|
||||||
|
A separable portion of the object code, whose source code is excluded
|
||||||
|
from the Corresponding Source as a System Library, need not be
|
||||||
|
included in conveying the object code work.
|
||||||
|
|
||||||
|
A "User Product" is either (1) a "consumer product", which means any
|
||||||
|
tangible personal property which is normally used for personal, family,
|
||||||
|
or household purposes, or (2) anything designed or sold for incorporation
|
||||||
|
into a dwelling. In determining whether a product is a consumer product,
|
||||||
|
doubtful cases shall be resolved in favor of coverage. For a particular
|
||||||
|
product received by a particular user, "normally used" refers to a
|
||||||
|
typical or common use of that class of product, regardless of the status
|
||||||
|
of the particular user or of the way in which the particular user
|
||||||
|
actually uses, or expects or is expected to use, the product. A product
|
||||||
|
is a consumer product regardless of whether the product has substantial
|
||||||
|
commercial, industrial or non-consumer uses, unless such uses represent
|
||||||
|
the only significant mode of use of the product.
|
||||||
|
|
||||||
|
"Installation Information" for a User Product means any methods,
|
||||||
|
procedures, authorization keys, or other information required to install
|
||||||
|
and execute modified versions of a covered work in that User Product from
|
||||||
|
a modified version of its Corresponding Source. The information must
|
||||||
|
suffice to ensure that the continued functioning of the modified object
|
||||||
|
code is in no case prevented or interfered with solely because
|
||||||
|
modification has been made.
|
||||||
|
|
||||||
|
If you convey an object code work under this section in, or with, or
|
||||||
|
specifically for use in, a User Product, and the conveying occurs as
|
||||||
|
part of a transaction in which the right of possession and use of the
|
||||||
|
User Product is transferred to the recipient in perpetuity or for a
|
||||||
|
fixed term (regardless of how the transaction is characterized), the
|
||||||
|
Corresponding Source conveyed under this section must be accompanied
|
||||||
|
by the Installation Information. But this requirement does not apply
|
||||||
|
if neither you nor any third party retains the ability to install
|
||||||
|
modified object code on the User Product (for example, the work has
|
||||||
|
been installed in ROM).
|
||||||
|
|
||||||
|
The requirement to provide Installation Information does not include a
|
||||||
|
requirement to continue to provide support service, warranty, or updates
|
||||||
|
for a work that has been modified or installed by the recipient, or for
|
||||||
|
the User Product in which it has been modified or installed. Access to a
|
||||||
|
network may be denied when the modification itself materially and
|
||||||
|
adversely affects the operation of the network or violates the rules and
|
||||||
|
protocols for communication across the network.
|
||||||
|
|
||||||
|
Corresponding Source conveyed, and Installation Information provided,
|
||||||
|
in accord with this section must be in a format that is publicly
|
||||||
|
documented (and with an implementation available to the public in
|
||||||
|
source code form), and must require no special password or key for
|
||||||
|
unpacking, reading or copying.
|
||||||
|
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||||||
|
7. Additional Terms.
|
||||||
|
|
||||||
|
"Additional permissions" are terms that supplement the terms of this
|
||||||
|
License by making exceptions from one or more of its conditions.
|
||||||
|
Additional permissions that are applicable to the entire Program shall
|
||||||
|
be treated as though they were included in this License, to the extent
|
||||||
|
that they are valid under applicable law. If additional permissions
|
||||||
|
apply only to part of the Program, that part may be used separately
|
||||||
|
under those permissions, but the entire Program remains governed by
|
||||||
|
this License without regard to the additional permissions.
|
||||||
|
|
||||||
|
When you convey a copy of a covered work, you may at your option
|
||||||
|
remove any additional permissions from that copy, or from any part of
|
||||||
|
it. (Additional permissions may be written to require their own
|
||||||
|
removal in certain cases when you modify the work.) You may place
|
||||||
|
additional permissions on material, added by you to a covered work,
|
||||||
|
for which you have or can give appropriate copyright permission.
|
||||||
|
|
||||||
|
Notwithstanding any other provision of this License, for material you
|
||||||
|
add to a covered work, you may (if authorized by the copyright holders of
|
||||||
|
that material) supplement the terms of this License with terms:
|
||||||
|
|
||||||
|
a) Disclaiming warranty or limiting liability differently from the
|
||||||
|
terms of sections 15 and 16 of this License; or
|
||||||
|
|
||||||
|
b) Requiring preservation of specified reasonable legal notices or
|
||||||
|
author attributions in that material or in the Appropriate Legal
|
||||||
|
Notices displayed by works containing it; or
|
||||||
|
|
||||||
|
c) Prohibiting misrepresentation of the origin of that material, or
|
||||||
|
requiring that modified versions of such material be marked in
|
||||||
|
reasonable ways as different from the original version; or
|
||||||
|
|
||||||
|
d) Limiting the use for publicity purposes of names of licensors or
|
||||||
|
authors of the material; or
|
||||||
|
|
||||||
|
e) Declining to grant rights under trademark law for use of some
|
||||||
|
trade names, trademarks, or service marks; or
|
||||||
|
|
||||||
|
f) Requiring indemnification of licensors and authors of that
|
||||||
|
material by anyone who conveys the material (or modified versions of
|
||||||
|
it) with contractual assumptions of liability to the recipient, for
|
||||||
|
any liability that these contractual assumptions directly impose on
|
||||||
|
those licensors and authors.
|
||||||
|
|
||||||
|
All other non-permissive additional terms are considered "further
|
||||||
|
restrictions" within the meaning of section 10. If the Program as you
|
||||||
|
received it, or any part of it, contains a notice stating that it is
|
||||||
|
governed by this License along with a term that is a further
|
||||||
|
restriction, you may remove that term. If a license document contains
|
||||||
|
a further restriction but permits relicensing or conveying under this
|
||||||
|
License, you may add to a covered work material governed by the terms
|
||||||
|
of that license document, provided that the further restriction does
|
||||||
|
not survive such relicensing or conveying.
|
||||||
|
|
||||||
|
If you add terms to a covered work in accord with this section, you
|
||||||
|
must place, in the relevant source files, a statement of the
|
||||||
|
additional terms that apply to those files, or a notice indicating
|
||||||
|
where to find the applicable terms.
|
||||||
|
|
||||||
|
Additional terms, permissive or non-permissive, may be stated in the
|
||||||
|
form of a separately written license, or stated as exceptions;
|
||||||
|
the above requirements apply either way.
|
||||||
|
|
||||||
|
8. Termination.
|
||||||
|
|
||||||
|
You may not propagate or modify a covered work except as expressly
|
||||||
|
provided under this License. Any attempt otherwise to propagate or
|
||||||
|
modify it is void, and will automatically terminate your rights under
|
||||||
|
this License (including any patent licenses granted under the third
|
||||||
|
paragraph of section 11).
|
||||||
|
|
||||||
|
However, if you cease all violation of this License, then your
|
||||||
|
license from a particular copyright holder is reinstated (a)
|
||||||
|
provisionally, unless and until the copyright holder explicitly and
|
||||||
|
finally terminates your license, and (b) permanently, if the copyright
|
||||||
|
holder fails to notify you of the violation by some reasonable means
|
||||||
|
prior to 60 days after the cessation.
|
||||||
|
|
||||||
|
Moreover, your license from a particular copyright holder is
|
||||||
|
reinstated permanently if the copyright holder notifies you of the
|
||||||
|
violation by some reasonable means, this is the first time you have
|
||||||
|
received notice of violation of this License (for any work) from that
|
||||||
|
copyright holder, and you cure the violation prior to 30 days after
|
||||||
|
your receipt of the notice.
|
||||||
|
|
||||||
|
Termination of your rights under this section does not terminate the
|
||||||
|
licenses of parties who have received copies or rights from you under
|
||||||
|
this License. If your rights have been terminated and not permanently
|
||||||
|
reinstated, you do not qualify to receive new licenses for the same
|
||||||
|
material under section 10.
|
||||||
|
|
||||||
|
9. Acceptance Not Required for Having Copies.
|
||||||
|
|
||||||
|
You are not required to accept this License in order to receive or
|
||||||
|
run a copy of the Program. Ancillary propagation of a covered work
|
||||||
|
occurring solely as a consequence of using peer-to-peer transmission
|
||||||
|
to receive a copy likewise does not require acceptance. However,
|
||||||
|
nothing other than this License grants you permission to propagate or
|
||||||
|
modify any covered work. These actions infringe copyright if you do
|
||||||
|
not accept this License. Therefore, by modifying or propagating a
|
||||||
|
covered work, you indicate your acceptance of this License to do so.
|
||||||
|
|
||||||
|
10. Automatic Licensing of Downstream Recipients.
|
||||||
|
|
||||||
|
Each time you convey a covered work, the recipient automatically
|
||||||
|
receives a license from the original licensors, to run, modify and
|
||||||
|
propagate that work, subject to this License. You are not responsible
|
||||||
|
for enforcing compliance by third parties with this License.
|
||||||
|
|
||||||
|
An "entity transaction" is a transaction transferring control of an
|
||||||
|
organization, or substantially all assets of one, or subdividing an
|
||||||
|
organization, or merging organizations. If propagation of a covered
|
||||||
|
work results from an entity transaction, each party to that
|
||||||
|
transaction who receives a copy of the work also receives whatever
|
||||||
|
licenses to the work the party's predecessor in interest had or could
|
||||||
|
give under the previous paragraph, plus a right to possession of the
|
||||||
|
Corresponding Source of the work from the predecessor in interest, if
|
||||||
|
the predecessor has it or can get it with reasonable efforts.
|
||||||
|
|
||||||
|
You may not impose any further restrictions on the exercise of the
|
||||||
|
rights granted or affirmed under this License. For example, you may
|
||||||
|
not impose a license fee, royalty, or other charge for exercise of
|
||||||
|
rights granted under this License, and you may not initiate litigation
|
||||||
|
(including a cross-claim or counterclaim in a lawsuit) alleging that
|
||||||
|
any patent claim is infringed by making, using, selling, offering for
|
||||||
|
sale, or importing the Program or any portion of it.
|
||||||
|
|
||||||
|
11. Patents.
|
||||||
|
|
||||||
|
A "contributor" is a copyright holder who authorizes use under this
|
||||||
|
License of the Program or a work on which the Program is based. The
|
||||||
|
work thus licensed is called the contributor's "contributor version".
|
||||||
|
|
||||||
|
A contributor's "essential patent claims" are all patent claims
|
||||||
|
owned or controlled by the contributor, whether already acquired or
|
||||||
|
hereafter acquired, that would be infringed by some manner, permitted
|
||||||
|
by this License, of making, using, or selling its contributor version,
|
||||||
|
but do not include claims that would be infringed only as a
|
||||||
|
consequence of further modification of the contributor version. For
|
||||||
|
purposes of this definition, "control" includes the right to grant
|
||||||
|
patent sublicenses in a manner consistent with the requirements of
|
||||||
|
this License.
|
||||||
|
|
||||||
|
Each contributor grants you a non-exclusive, worldwide, royalty-free
|
||||||
|
patent license under the contributor's essential patent claims, to
|
||||||
|
make, use, sell, offer for sale, import and otherwise run, modify and
|
||||||
|
propagate the contents of its contributor version.
|
||||||
|
|
||||||
|
In the following three paragraphs, a "patent license" is any express
|
||||||
|
agreement or commitment, however denominated, not to enforce a patent
|
||||||
|
(such as an express permission to practice a patent or covenant not to
|
||||||
|
sue for patent infringement). To "grant" such a patent license to a
|
||||||
|
party means to make such an agreement or commitment not to enforce a
|
||||||
|
patent against the party.
|
||||||
|
|
||||||
|
If you convey a covered work, knowingly relying on a patent license,
|
||||||
|
and the Corresponding Source of the work is not available for anyone
|
||||||
|
to copy, free of charge and under the terms of this License, through a
|
||||||
|
publicly available network server or other readily accessible means,
|
||||||
|
then you must either (1) cause the Corresponding Source to be so
|
||||||
|
available, or (2) arrange to deprive yourself of the benefit of the
|
||||||
|
patent license for this particular work, or (3) arrange, in a manner
|
||||||
|
consistent with the requirements of this License, to extend the patent
|
||||||
|
license to downstream recipients. "Knowingly relying" means you have
|
||||||
|
actual knowledge that, but for the patent license, your conveying the
|
||||||
|
covered work in a country, or your recipient's use of the covered work
|
||||||
|
in a country, would infringe one or more identifiable patents in that
|
||||||
|
country that you have reason to believe are valid.
|
||||||
|
|
||||||
|
If, pursuant to or in connection with a single transaction or
|
||||||
|
arrangement, you convey, or propagate by procuring conveyance of, a
|
||||||
|
covered work, and grant a patent license to some of the parties
|
||||||
|
receiving the covered work authorizing them to use, propagate, modify
|
||||||
|
or convey a specific copy of the covered work, then the patent license
|
||||||
|
you grant is automatically extended to all recipients of the covered
|
||||||
|
work and works based on it.
|
||||||
|
|
||||||
|
A patent license is "discriminatory" if it does not include within
|
||||||
|
the scope of its coverage, prohibits the exercise of, or is
|
||||||
|
conditioned on the non-exercise of one or more of the rights that are
|
||||||
|
specifically granted under this License. You may not convey a covered
|
||||||
|
work if you are a party to an arrangement with a third party that is
|
||||||
|
in the business of distributing software, under which you make payment
|
||||||
|
to the third party based on the extent of your activity of conveying
|
||||||
|
the work, and under which the third party grants, to any of the
|
||||||
|
parties who would receive the covered work from you, a discriminatory
|
||||||
|
patent license (a) in connection with copies of the covered work
|
||||||
|
conveyed by you (or copies made from those copies), or (b) primarily
|
||||||
|
for and in connection with specific products or compilations that
|
||||||
|
contain the covered work, unless you entered into that arrangement,
|
||||||
|
or that patent license was granted, prior to 28 March 2007.
|
||||||
|
|
||||||
|
Nothing in this License shall be construed as excluding or limiting
|
||||||
|
any implied license or other defenses to infringement that may
|
||||||
|
otherwise be available to you under applicable patent law.
|
||||||
|
|
||||||
|
12. No Surrender of Others' Freedom.
|
||||||
|
|
||||||
|
If 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 convey a
|
||||||
|
covered work so as to satisfy simultaneously your obligations under this
|
||||||
|
License and any other pertinent obligations, then as a consequence you may
|
||||||
|
not convey it at all. For example, if you agree to terms that obligate you
|
||||||
|
to collect a royalty for further conveying from those to whom you convey
|
||||||
|
the Program, the only way you could satisfy both those terms and this
|
||||||
|
License would be to refrain entirely from conveying the Program.
|
||||||
|
|
||||||
|
13. Use with the GNU Affero General Public License.
|
||||||
|
|
||||||
|
Notwithstanding any other provision of this License, you have
|
||||||
|
permission to link or combine any covered work with a work licensed
|
||||||
|
under version 3 of the GNU Affero General Public License into a single
|
||||||
|
combined work, and to convey the resulting work. The terms of this
|
||||||
|
License will continue to apply to the part which is the covered work,
|
||||||
|
but the special requirements of the GNU Affero General Public License,
|
||||||
|
section 13, concerning interaction through a network will apply to the
|
||||||
|
combination as such.
|
||||||
|
|
||||||
|
14. Revised Versions of this License.
|
||||||
|
|
||||||
|
The Free Software Foundation may publish revised and/or new versions of
|
||||||
|
the GNU General Public License from time to time. Such new versions will
|
||||||
|
be similar in spirit to the present version, but may differ in detail to
|
||||||
|
address new problems or concerns.
|
||||||
|
|
||||||
|
Each version is given a distinguishing version number. If the
|
||||||
|
Program specifies that a certain numbered version of the GNU General
|
||||||
|
Public License "or any later version" applies to it, you have the
|
||||||
|
option of following the terms and conditions either of that numbered
|
||||||
|
version or of any later version published by the Free Software
|
||||||
|
Foundation. If the Program does not specify a version number of the
|
||||||
|
GNU General Public License, you may choose any version ever published
|
||||||
|
by the Free Software Foundation.
|
||||||
|
|
||||||
|
If the Program specifies that a proxy can decide which future
|
||||||
|
versions of the GNU General Public License can be used, that proxy's
|
||||||
|
public statement of acceptance of a version permanently authorizes you
|
||||||
|
to choose that version for the Program.
|
||||||
|
|
||||||
|
Later license versions may give you additional or different
|
||||||
|
permissions. However, no additional obligations are imposed on any
|
||||||
|
author or copyright holder as a result of your choosing to follow a
|
||||||
|
later version.
|
||||||
|
|
||||||
|
15. Disclaimer of Warranty.
|
||||||
|
|
||||||
|
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
|
||||||
|
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
|
||||||
|
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "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 PROGRAM
|
||||||
|
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
|
||||||
|
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
||||||
|
|
||||||
|
16. Limitation of Liability.
|
||||||
|
|
||||||
|
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||||
|
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
|
||||||
|
THE PROGRAM 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 PROGRAM (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 PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
|
||||||
|
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
|
||||||
|
SUCH DAMAGES.
|
||||||
|
|
||||||
|
17. Interpretation of Sections 15 and 16.
|
||||||
|
|
||||||
|
If the disclaimer of warranty and limitation of liability provided
|
||||||
|
above cannot be given local legal effect according to their terms,
|
||||||
|
reviewing courts shall apply local law that most closely approximates
|
||||||
|
an absolute waiver of all civil liability in connection with the
|
||||||
|
Program, unless a warranty or assumption of liability accompanies a
|
||||||
|
copy of the Program in return for a fee.
|
||||||
|
|
||||||
|
END OF TERMS AND CONDITIONS
|
||||||
|
|
||||||
|
How to Apply These Terms to Your New Programs
|
||||||
|
|
||||||
|
If you develop a new program, and you want it to be of the greatest
|
||||||
|
possible use to the public, the best way to achieve this is to make it
|
||||||
|
free software which everyone can redistribute and change under these terms.
|
||||||
|
|
||||||
|
To do so, attach the following notices to the program. It is safest
|
||||||
|
to attach them to the start of each source file to most effectively
|
||||||
|
state the exclusion of warranty; and each file should have at least
|
||||||
|
the "copyright" line and a pointer to where the full notice is found.
|
||||||
|
|
||||||
|
<one line to give the program's name and a brief idea of what it does.>
|
||||||
|
Copyright (C) <year> <name of author>
|
||||||
|
|
||||||
|
This program is free software: you can redistribute it and/or modify
|
||||||
|
it under the terms of the GNU General Public License as published by
|
||||||
|
the Free Software Foundation, either version 3 of the License, or
|
||||||
|
(at your option) any later version.
|
||||||
|
|
||||||
|
This program is distributed in the hope that it will be useful,
|
||||||
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
GNU General Public License for more details.
|
||||||
|
|
||||||
|
You should have received a copy of the GNU General Public License
|
||||||
|
along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
|
Also add information on how to contact you by electronic and paper mail.
|
||||||
|
|
||||||
|
If the program does terminal interaction, make it output a short
|
||||||
|
notice like this when it starts in an interactive mode:
|
||||||
|
|
||||||
|
<program> Copyright (C) <year> <name of author>
|
||||||
|
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||||
|
This is free software, and you are welcome to redistribute it
|
||||||
|
under certain conditions; type `show c' for details.
|
||||||
|
|
||||||
|
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||||
|
parts of the General Public License. Of course, your program's commands
|
||||||
|
might be different; for a GUI interface, you would use an "about box".
|
||||||
|
|
||||||
|
You should also get your employer (if you work as a programmer) or school,
|
||||||
|
if any, to sign a "copyright disclaimer" for the program, if necessary.
|
||||||
|
For more information on this, and how to apply and follow the GNU GPL, see
|
||||||
|
<https://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
|
The GNU General Public License does not permit incorporating your program
|
||||||
|
into proprietary programs. If your program is a subroutine library, you
|
||||||
|
may consider it more useful to permit linking proprietary applications with
|
||||||
|
the library. If this is what you want to do, use the GNU Lesser General
|
||||||
|
Public License instead of this License. But first, please read
|
||||||
|
<https://www.gnu.org/licenses/why-not-lgpl.html>.
|
||||||
|
|
147
README.md
Normal file
147
README.md
Normal file
|
@ -0,0 +1,147 @@
|
||||||
|
# whatsxmpp
|
||||||
|
|
||||||
|
[![GNU AGPLv3 licensed](https://www.gnu.org/graphics/agplv3-155x51.png)](https://www.gnu.org/licenses/agpl-3.0.en.html)
|
||||||
|
[![XMPP chatroom: whatsxmpp@conf.theta.eu.org](https://inverse.chat/badge.svg?room=whatsxmpp@conf.theta.eu.org)](xmpp:whatsxmpp@conf.theta.eu.org?join)
|
||||||
|
![Maintenance](https://img.shields.io/maintenance/yes/2020.svg)
|
||||||
|
|
||||||
|
![Lisp warning](http://www.lisperati.com/lisplogo_warning_256.png)
|
||||||
|
|
||||||
|
A WhatsApp Web transport for the [Extensible Messaging and Presence Protocol (XMPP)](https://xmpp.org/), otherwise known as Jabber. (alpha!)
|
||||||
|
|
||||||
|
*This is the spiritual successor of [sms-irc](https://git.theta.eu.org/eta/sms-irc), a similar project that works with IRC instead of XMPP.*
|
||||||
|
|
||||||
|
## What is this?
|
||||||
|
|
||||||
|
This is a multi-user transport for WhatsApp, using the [whatscl](https://git.theta.eu.org/eta/whatscl**
|
||||||
|
library for Common Lisp. By scanning a QR code generated by the bridge with the WhatsApp
|
||||||
|
app on your phone, you can send and receive messages and media with your Jabber ID.
|
||||||
|
|
||||||
|
**Note:** You currently need an XMPP server of your own to try this. It's only been tested
|
||||||
|
with [prosody 0.11](https://prosody.im/) as of the time of writing - and there are some
|
||||||
|
additional caveats: take a look at the requirements list.
|
||||||
|
|
||||||
|
## What works?
|
||||||
|
|
||||||
|
- Sending private messages/DMs both ways
|
||||||
|
- *Basic* support for MUCs
|
||||||
|
- Magically populating your roster using [XEP-0144: Roster Item Exchange](https://xmpp.org/extensions/xep-0144.html)
|
||||||
|
- Downloading/decrypting media from WhatsApp and uploading it to your XEP-0363 server
|
||||||
|
- Avatars
|
||||||
|
- Read receipts
|
||||||
|
- Status text
|
||||||
|
- Typing notifications / chat state
|
||||||
|
|
||||||
|
## What doesn't yet?
|
||||||
|
|
||||||
|
- [XEP-0313: Message Archive Management](https://xmpp.org/extensions/xep-0313.html) in MUCs (DMs should be done by your server)
|
||||||
|
- Support for users joining and leaving MUCs
|
||||||
|
- Support for the topic changing in MUCs
|
||||||
|
- Uploading media to WhatsApp (currently, it just comes through as a link)
|
||||||
|
- Probably other stuff
|
||||||
|
|
||||||
|
## What you'll need
|
||||||
|
|
||||||
|
- An XMPP server (we recommend [prosody](https://prosody.im/), but it might also work with ejabberd; let us know!)
|
||||||
|
- You need to set up a new *external component* for the bridge ([see prosody doc](https://prosody.im/doc/components)).
|
||||||
|
- In addition, you **must** configure an [XEP-0363 (HTTP File Upload)](https://xmpp.org/extensions/xep-0363.html) component. ([see prosody doc](https://modules.prosody.im/mod_http_upload.html))
|
||||||
|
- **WARNING:** Prosody's `mod_http_upload` does not allow the bridge to use it, as of the time of writing (2020-05-28). You will need to replace `mod_http_upload.lua` in your community modules directory with `doc/mod_http_upload.lua` from this repository for it to work.
|
||||||
|
- An installation of [Docker](https://www.docker.com/)
|
||||||
|
- You *can* try and run the bridge without Docker. However, we really don't recommend it, especially if you aren't familiar with Common Lisp.
|
||||||
|
- Ask in the support MUC (link at the top of this file) if you want to do this.
|
||||||
|
- [SQLite](https://www.sqlite.org/) installed (specifically the `sqlite3` command).
|
||||||
|
|
||||||
|
## Instructions
|
||||||
|
|
||||||
|
### Step 1: configure your XMPP server
|
||||||
|
|
||||||
|
Make sure you've followed the links above to set up XEP-0363 and an external component for the bridge. With prosody, your config might look something like:
|
||||||
|
|
||||||
|
```
|
||||||
|
Component "upload.capulet.lit" "http_upload"
|
||||||
|
http_upload_file_size_limit = 104857600
|
||||||
|
|
||||||
|
Component "whatsapp.capulet.lit"
|
||||||
|
component_secret = "juliet"
|
||||||
|
```
|
||||||
|
|
||||||
|
|
||||||
|
### Step 2: set up the database and storage for the bridge
|
||||||
|
|
||||||
|
I'm going to assume you want to store bridge data at the path `/wx`. Replace this path
|
||||||
|
with wherever you actually want to put the data in the commands below.
|
||||||
|
|
||||||
|
Set up the database schema:
|
||||||
|
|
||||||
|
```
|
||||||
|
$ sqlite3 /wx/data.sqlite3 < ./schema.sql
|
||||||
|
```
|
||||||
|
|
||||||
|
Then, configure the bridge -- replacing the values below with the actual values:
|
||||||
|
|
||||||
|
```
|
||||||
|
$ sqlite3 /wx/data.sqlite3
|
||||||
|
SQLite version 3.31.1 2020-01-27 19:55:54
|
||||||
|
Enter ".help" for usage hints.
|
||||||
|
sqlite> INSERT INTO configuration (rev, server, port, component_name, shared_secret, upload_component_name) VALUES (1, "capulet.lit", 5347, "whatsapp.capulet.lit", "juliet", "upload.capulet.lit");
|
||||||
|
sqlite> .quit
|
||||||
|
```
|
||||||
|
|
||||||
|
A few things to note here:
|
||||||
|
|
||||||
|
- The `port` is whatever port your XMPP server accepts incoming component connections on (*not* client-to-server or server-to-server connections!). For prosody, the default is 5347.
|
||||||
|
- The `component_name` is whatever you specified in the prosody config for this component.
|
||||||
|
- The `shared_secret` is the same as the `component_secret`.
|
||||||
|
- The `upload_component_name` is the name of the XEP-0363 HTTP Upload component.
|
||||||
|
|
||||||
|
### Step 3: run the bridge
|
||||||
|
|
||||||
|
You can build the Docker image yourself from the `Dockerfile` in the repo, or you can just
|
||||||
|
use my hosted copy. (Don't download it a ton you guys, I pay for this stuff.)
|
||||||
|
|
||||||
|
You'll want to pass through the directory (`/wx`, or whatever it is) where you created
|
||||||
|
the database as a Docker volume, so the container can access it. Then, supply the path
|
||||||
|
to the database as the first argument to the container.
|
||||||
|
|
||||||
|
The hosted image is called `eu.gcr.io/etainfra/whatsxmpp`. Using the `docker` CLI,
|
||||||
|
you might run the bridge like so:
|
||||||
|
|
||||||
|
```
|
||||||
|
docker run \
|
||||||
|
--name whatsxmpp \
|
||||||
|
--restart always \
|
||||||
|
-v /wx:/data \
|
||||||
|
eu.gcr.io/etainfra/whatsxmpp
|
||||||
|
/data/data.sqlite3
|
||||||
|
|
||||||
|
```
|
||||||
|
|
||||||
|
Consult the [Docker reference](https://docs.docker.com/engine/reference/run/) for more details
|
||||||
|
on this step, including how to run the image in the background and more!
|
||||||
|
|
||||||
|
If you see `Connection complete! \o/` in the logs, it's working!
|
||||||
|
|
||||||
|
### Step 4: set up the WhatsApp Web part
|
||||||
|
|
||||||
|
You'll interact with the bridge by talking to `admin@whatsapp.capulet.lit` (well,
|
||||||
|
the last part of that JID will be different depending on your setup). Send this user
|
||||||
|
`help` to check that the bridge is working (you should get some help text).
|
||||||
|
|
||||||
|
To set it up, have your phone at the ready to scan the QR code (Menu -> WhatsApp Web).
|
||||||
|
Then, send `register` to the admin user, and scan the QR code you're given.
|
||||||
|
|
||||||
|
(Did it break at this part and give you a nasty error? Check your XEP-0363 HTTP Upload
|
||||||
|
service is working correctly, and allows the bridge to use it as described above!**
|
||||||
|
|
||||||
|
You should then receive a crapton of presence subscription requests and MUC invites
|
||||||
|
for everyone you are remotely related to on WhatsApp, and for all the WhatsApp groups
|
||||||
|
you're in, and the bridge is done!
|
||||||
|
|
||||||
|
**Tip:** If your client supports [XEP-0144: Roster Item Exchange](https://xmpp.org/extensions/xep-0144.html) (Gajim on desktop is good for this), send `getroster` to the admin user
|
||||||
|
to pop up a window where you can insert all your WhatsApp contacts in one go!
|
||||||
|
|
||||||
|
## Support
|
||||||
|
|
||||||
|
[![XMPP chatroom: whatsxmpp@conf.theta.eu.org](https://inverse.chat/badge.svg?room=whatsxmpp@conf.theta.eu.org)](xmpp:whatsxmpp@conf.theta.eu.org?join)
|
||||||
|
|
||||||
|
Come join us in [whatsxmpp@conf.theta.eu.org](xmpp:whatsxmpp@conf.theta.eu.org?join) if you
|
||||||
|
have questions or issues using the bridge.
|
434
doc/mod_http_upload.lua
Normal file
434
doc/mod_http_upload.lua
Normal file
|
@ -0,0 +1,434 @@
|
||||||
|
-- mod_http_upload
|
||||||
|
--
|
||||||
|
-- Copyright (C) 2015-2018 Kim Alvefur
|
||||||
|
--
|
||||||
|
-- This file is MIT/X11 licensed.
|
||||||
|
--
|
||||||
|
-- Implementation of HTTP Upload file transfer mechanism used by Conversations
|
||||||
|
--
|
||||||
|
|
||||||
|
-- imports
|
||||||
|
local st = require"util.stanza";
|
||||||
|
local lfs = require"lfs";
|
||||||
|
local url = require "socket.url";
|
||||||
|
local dataform = require "util.dataforms".new;
|
||||||
|
local datamanager = require "util.datamanager";
|
||||||
|
local array = require "util.array";
|
||||||
|
local t_concat = table.concat;
|
||||||
|
local t_insert = table.insert;
|
||||||
|
local s_upper = string.upper;
|
||||||
|
local httpserver = require "net.http.server";
|
||||||
|
local have_id, id = pcall(require, "util.id"); -- Only available in 0.10+
|
||||||
|
local uuid = require"util.uuid".generate;
|
||||||
|
if have_id then
|
||||||
|
uuid = id.medium;
|
||||||
|
end
|
||||||
|
|
||||||
|
local function join_path(...) -- COMPAT util.path was added in 0.10
|
||||||
|
return table.concat({ ... }, package.config:sub(1,1));
|
||||||
|
end
|
||||||
|
|
||||||
|
-- config
|
||||||
|
local file_size_limit = module:get_option_number(module.name .. "_file_size_limit", 1024 * 1024); -- 1 MB
|
||||||
|
local quota = module:get_option_number(module.name .. "_quota");
|
||||||
|
local max_age = module:get_option_number(module.name .. "_expire_after");
|
||||||
|
|
||||||
|
--- sanity
|
||||||
|
local parser_body_limit = module:context("*"):get_option_number("http_max_content_size", 10*1024*1024);
|
||||||
|
if file_size_limit > parser_body_limit then
|
||||||
|
module:log("warn", "%s_file_size_limit exceeds HTTP parser limit on body size, capping file size to %d B",
|
||||||
|
module.name, parser_body_limit);
|
||||||
|
file_size_limit = parser_body_limit;
|
||||||
|
end
|
||||||
|
|
||||||
|
-- depends
|
||||||
|
module:depends("http");
|
||||||
|
module:depends("disco");
|
||||||
|
|
||||||
|
local http_files;
|
||||||
|
|
||||||
|
if not pcall(function ()
|
||||||
|
http_files = require "net.http.files";
|
||||||
|
end) then
|
||||||
|
http_files = module:depends"http_files";
|
||||||
|
end
|
||||||
|
|
||||||
|
local mime_map = module:shared("/*/http_files/mime").types;
|
||||||
|
if not mime_map then
|
||||||
|
mime_map = {
|
||||||
|
html = "text/html", htm = "text/html",
|
||||||
|
xml = "application/xml",
|
||||||
|
txt = "text/plain",
|
||||||
|
css = "text/css",
|
||||||
|
js = "application/javascript",
|
||||||
|
png = "image/png",
|
||||||
|
gif = "image/gif",
|
||||||
|
jpeg = "image/jpeg", jpg = "image/jpeg",
|
||||||
|
svg = "image/svg+xml",
|
||||||
|
};
|
||||||
|
module:shared("/*/http_files/mime").types = mime_map;
|
||||||
|
|
||||||
|
local mime_types, err = io.open(module:get_option_path("mime_types_file", "/etc/mime.types", "config"), "r");
|
||||||
|
if mime_types then
|
||||||
|
local mime_data = mime_types:read("*a");
|
||||||
|
mime_types:close();
|
||||||
|
setmetatable(mime_map, {
|
||||||
|
__index = function(t, ext)
|
||||||
|
local typ = mime_data:match("\n(%S+)[^\n]*%s"..(ext:lower()).."%s") or "application/octet-stream";
|
||||||
|
t[ext] = typ;
|
||||||
|
return typ;
|
||||||
|
end
|
||||||
|
});
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
-- namespaces
|
||||||
|
local namespace = "urn:xmpp:http:upload:0";
|
||||||
|
local legacy_namespace = "urn:xmpp:http:upload";
|
||||||
|
|
||||||
|
-- identity and feature advertising
|
||||||
|
module:add_identity("store", "file", module:get_option_string("name", "HTTP File Upload"));
|
||||||
|
module:add_feature(namespace);
|
||||||
|
module:add_feature(legacy_namespace);
|
||||||
|
|
||||||
|
module:add_extension(dataform {
|
||||||
|
{ name = "FORM_TYPE", type = "hidden", value = namespace },
|
||||||
|
{ name = "max-file-size", type = "text-single" },
|
||||||
|
}:form({ ["max-file-size"] = ("%d"):format(file_size_limit) }, "result"));
|
||||||
|
|
||||||
|
module:add_extension(dataform {
|
||||||
|
{ name = "FORM_TYPE", type = "hidden", value = legacy_namespace },
|
||||||
|
{ name = "max-file-size", type = "text-single" },
|
||||||
|
}:form({ ["max-file-size"] = ("%d"):format(file_size_limit) }, "result"));
|
||||||
|
|
||||||
|
-- state
|
||||||
|
local pending_slots = module:shared("upload_slots");
|
||||||
|
|
||||||
|
local storage_path = module:get_option_string(module.name .. "_path", join_path(prosody.paths.data, module.name));
|
||||||
|
lfs.mkdir(storage_path);
|
||||||
|
|
||||||
|
local function expire(username, host)
|
||||||
|
if not max_age then return true; end
|
||||||
|
local uploads, err = datamanager.list_load(username, host, module.name);
|
||||||
|
if err then return false, err; end
|
||||||
|
if not uploads then return true; end
|
||||||
|
uploads = array(uploads);
|
||||||
|
local expiry = os.time() - max_age;
|
||||||
|
local upload_window = os.time() - 900;
|
||||||
|
local before = #uploads;
|
||||||
|
uploads:filter(function (item)
|
||||||
|
local filename = item.filename;
|
||||||
|
if item.dir then
|
||||||
|
filename = join_path(storage_path, item.dir, item.filename);
|
||||||
|
end
|
||||||
|
if item.time < expiry then
|
||||||
|
local deleted, whynot = os.remove(filename);
|
||||||
|
if not deleted then
|
||||||
|
module:log("warn", "Could not delete expired upload %s: %s", filename, whynot or "delete failed");
|
||||||
|
end
|
||||||
|
os.remove(filename:match("^(.*)[/\\]"));
|
||||||
|
return false;
|
||||||
|
elseif item.time < upload_window and not lfs.attributes(filename) then
|
||||||
|
return false; -- File was not uploaded or has been deleted since
|
||||||
|
end
|
||||||
|
return true;
|
||||||
|
end);
|
||||||
|
local after = #uploads;
|
||||||
|
if before == after then return true end -- nothing changed, skip write
|
||||||
|
return datamanager.list_store(username, host, module.name, uploads);
|
||||||
|
end
|
||||||
|
|
||||||
|
local function check_quota(username, host, does_it_fit)
|
||||||
|
if not quota then return true; end
|
||||||
|
local uploads, err = datamanager.list_load(username, host, module.name);
|
||||||
|
if err then
|
||||||
|
return false;
|
||||||
|
elseif not uploads then
|
||||||
|
if does_it_fit then
|
||||||
|
return does_it_fit < quota;
|
||||||
|
end
|
||||||
|
return true;
|
||||||
|
end
|
||||||
|
local sum = does_it_fit or 0;
|
||||||
|
for _, item in ipairs(uploads) do
|
||||||
|
sum = sum + item.size;
|
||||||
|
end
|
||||||
|
return sum < quota;
|
||||||
|
end
|
||||||
|
|
||||||
|
local measure_slot = function () end
|
||||||
|
if module.measure then
|
||||||
|
-- COMPAT 0.9
|
||||||
|
-- module:measure was added in 0.10
|
||||||
|
measure_slot = module:measure("slot", "sizes");
|
||||||
|
end
|
||||||
|
|
||||||
|
local function handle_request(origin, stanza, xmlns, filename, filesize)
|
||||||
|
local username, host = origin.username, origin.host;
|
||||||
|
-- local clients only
|
||||||
|
if origin.type ~= "c2s" and origin.type ~= "component" then
|
||||||
|
module:log("debug", "Request for upload slot from a %s", origin.type);
|
||||||
|
return nil, st.error_reply(stanza, "cancel", "not-authorized");
|
||||||
|
end
|
||||||
|
-- validate
|
||||||
|
if not filename or filename:find("/") then
|
||||||
|
module:log("debug", "Filename %q not allowed", filename or "");
|
||||||
|
return nil, st.error_reply(stanza, "modify", "bad-request", "Invalid filename");
|
||||||
|
end
|
||||||
|
expire(username, host);
|
||||||
|
if not filesize then
|
||||||
|
module:log("debug", "Missing file size");
|
||||||
|
return nil, st.error_reply(stanza, "modify", "bad-request", "Missing or invalid file size");
|
||||||
|
elseif filesize > file_size_limit then
|
||||||
|
module:log("debug", "File too large (%d > %d)", filesize, file_size_limit);
|
||||||
|
return nil, st.error_reply(stanza, "modify", "not-acceptable", "File too large")
|
||||||
|
:tag("file-too-large", {xmlns=xmlns})
|
||||||
|
:tag("max-file-size"):text(("%d"):format(file_size_limit));
|
||||||
|
elseif not check_quota(username, host, filesize) then
|
||||||
|
module:log("debug", "Upload of %dB by %s would exceed quota", filesize, origin.full_jid);
|
||||||
|
return nil, st.error_reply(stanza, "wait", "resource-constraint", "Quota reached");
|
||||||
|
end
|
||||||
|
|
||||||
|
local random_dir = uuid();
|
||||||
|
local created, err = lfs.mkdir(join_path(storage_path, random_dir));
|
||||||
|
|
||||||
|
if not created then
|
||||||
|
module:log("error", "Could not create directory for slot: %s", err);
|
||||||
|
return nil, st.error_reply(stanza, "wait", "internal-server-error");
|
||||||
|
end
|
||||||
|
|
||||||
|
local ok = datamanager.list_append(username, host, module.name, {
|
||||||
|
filename = filename, dir = random_dir, size = filesize, time = os.time() });
|
||||||
|
|
||||||
|
if not ok then
|
||||||
|
return nil, st.error_reply(stanza, "wait", "internal-server-error");
|
||||||
|
end
|
||||||
|
|
||||||
|
local slot = random_dir.."/"..filename;
|
||||||
|
pending_slots[slot] = stanza.attr.from;
|
||||||
|
|
||||||
|
module:add_timer(900, function()
|
||||||
|
pending_slots[slot] = nil;
|
||||||
|
end);
|
||||||
|
|
||||||
|
measure_slot(filesize);
|
||||||
|
|
||||||
|
origin.log("debug", "Given upload slot %q", slot);
|
||||||
|
|
||||||
|
local base_url = module:http_url();
|
||||||
|
local slot_url = url.parse(base_url);
|
||||||
|
slot_url.path = url.parse_path(slot_url.path or "/");
|
||||||
|
t_insert(slot_url.path, random_dir);
|
||||||
|
t_insert(slot_url.path, filename);
|
||||||
|
slot_url.path.is_directory = false;
|
||||||
|
slot_url.path = url.build_path(slot_url.path);
|
||||||
|
slot_url = url.build(slot_url);
|
||||||
|
return slot_url;
|
||||||
|
end
|
||||||
|
|
||||||
|
-- hooks
|
||||||
|
module:hook("iq/host/"..namespace..":request", function (event)
|
||||||
|
local stanza, origin = event.stanza, event.origin;
|
||||||
|
local request = stanza.tags[1];
|
||||||
|
local filename = request.attr.filename;
|
||||||
|
local filesize = tonumber(request.attr.size);
|
||||||
|
|
||||||
|
local slot_url, err = handle_request(origin, stanza, namespace, filename, filesize);
|
||||||
|
if not slot_url then
|
||||||
|
origin.send(err);
|
||||||
|
return true;
|
||||||
|
end
|
||||||
|
|
||||||
|
local reply = st.reply(stanza)
|
||||||
|
:tag("slot", { xmlns = namespace })
|
||||||
|
:tag("get", { url = slot_url }):up()
|
||||||
|
:tag("put", { url = slot_url }):up()
|
||||||
|
:up();
|
||||||
|
origin.send(reply);
|
||||||
|
return true;
|
||||||
|
end);
|
||||||
|
|
||||||
|
module:hook("iq/host/"..legacy_namespace..":request", function (event)
|
||||||
|
local stanza, origin = event.stanza, event.origin;
|
||||||
|
local request = stanza.tags[1];
|
||||||
|
local filename = request:get_child_text("filename");
|
||||||
|
local filesize = tonumber(request:get_child_text("size"));
|
||||||
|
|
||||||
|
local slot_url, err = handle_request(origin, stanza, legacy_namespace, filename, filesize);
|
||||||
|
if not slot_url then
|
||||||
|
origin.send(err);
|
||||||
|
return true;
|
||||||
|
end
|
||||||
|
|
||||||
|
local reply = st.reply(stanza)
|
||||||
|
:tag("slot", { xmlns = legacy_namespace })
|
||||||
|
:tag("get"):text(slot_url):up()
|
||||||
|
:tag("put"):text(slot_url):up()
|
||||||
|
:up();
|
||||||
|
origin.send(reply);
|
||||||
|
return true;
|
||||||
|
end);
|
||||||
|
|
||||||
|
local measure_upload = function () end
|
||||||
|
if module.measure then
|
||||||
|
-- COMPAT 0.9
|
||||||
|
-- module:measure was added in 0.10
|
||||||
|
measure_upload = module:measure("upload", "sizes");
|
||||||
|
end
|
||||||
|
|
||||||
|
-- http service
|
||||||
|
local function set_cross_domain_headers(response)
|
||||||
|
local headers = response.headers;
|
||||||
|
headers.access_control_allow_methods = "GET, PUT, OPTIONS";
|
||||||
|
headers.access_control_allow_headers = "Content-Type";
|
||||||
|
headers.access_control_max_age = "7200";
|
||||||
|
headers.access_control_allow_origin = response.request.headers.origin or "*";
|
||||||
|
return response;
|
||||||
|
end
|
||||||
|
|
||||||
|
local function upload_data(event, path)
|
||||||
|
set_cross_domain_headers(event.response);
|
||||||
|
|
||||||
|
local uploader = pending_slots[path];
|
||||||
|
if not uploader then
|
||||||
|
module:log("warn", "Attempt to upload to unknown slot %q", path);
|
||||||
|
return; -- 404
|
||||||
|
end
|
||||||
|
local random_dir, filename = path:match("^([^/]+)/([^/]+)$");
|
||||||
|
if not random_dir then
|
||||||
|
module:log("warn", "Invalid file path %q", path);
|
||||||
|
return 400;
|
||||||
|
end
|
||||||
|
if #event.request.body > file_size_limit then
|
||||||
|
module:log("warn", "Uploaded file too large %d bytes", #event.request.body);
|
||||||
|
return 400;
|
||||||
|
end
|
||||||
|
pending_slots[path] = nil;
|
||||||
|
local full_filename = join_path(storage_path, random_dir, filename);
|
||||||
|
if lfs.attributes(full_filename) then
|
||||||
|
module:log("warn", "File %s exists already, not replacing it", full_filename);
|
||||||
|
return 409;
|
||||||
|
end
|
||||||
|
local fh, ferr = io.open(full_filename, "w");
|
||||||
|
if not fh then
|
||||||
|
module:log("error", "Could not open file %s for upload: %s", full_filename, ferr);
|
||||||
|
return 500;
|
||||||
|
end
|
||||||
|
local ok, err = fh:write(event.request.body);
|
||||||
|
if not ok then
|
||||||
|
module:log("error", "Could not write to file %s for upload: %s", full_filename, err);
|
||||||
|
os.remove(full_filename);
|
||||||
|
return 500;
|
||||||
|
end
|
||||||
|
ok, err = fh:close();
|
||||||
|
if not ok then
|
||||||
|
module:log("error", "Could not write to file %s for upload: %s", full_filename, err);
|
||||||
|
os.remove(full_filename);
|
||||||
|
return 500;
|
||||||
|
end
|
||||||
|
measure_upload(#event.request.body);
|
||||||
|
module:log("info", "File uploaded by %s to slot %s", uploader, random_dir);
|
||||||
|
return 201;
|
||||||
|
end
|
||||||
|
|
||||||
|
-- FIXME Duplicated from net.http.server
|
||||||
|
|
||||||
|
local codes = require "net.http.codes";
|
||||||
|
local headerfix = setmetatable({}, {
|
||||||
|
__index = function(t, k)
|
||||||
|
local v = "\r\n"..k:gsub("_", "-"):gsub("%f[%w].", s_upper)..": ";
|
||||||
|
t[k] = v;
|
||||||
|
return v;
|
||||||
|
end
|
||||||
|
});
|
||||||
|
|
||||||
|
local function send_response_sans_body(response, body)
|
||||||
|
if response.finished then return; end
|
||||||
|
response.finished = true;
|
||||||
|
response.conn._http_open_response = nil;
|
||||||
|
|
||||||
|
local status_line = "HTTP/"..response.request.httpversion.." "..(response.status or codes[response.status_code]);
|
||||||
|
local headers = response.headers;
|
||||||
|
if type(body) == "string" then
|
||||||
|
headers.content_length = #body;
|
||||||
|
elseif io.type(body) == "file" then
|
||||||
|
headers.content_length = body:seek("end");
|
||||||
|
body:close();
|
||||||
|
end
|
||||||
|
|
||||||
|
local output = { status_line };
|
||||||
|
for k,v in pairs(headers) do
|
||||||
|
t_insert(output, headerfix[k]..v);
|
||||||
|
end
|
||||||
|
t_insert(output, "\r\n\r\n");
|
||||||
|
-- Here we *don't* add the body to the output
|
||||||
|
|
||||||
|
response.conn:write(t_concat(output));
|
||||||
|
if response.on_destroy then
|
||||||
|
response:on_destroy();
|
||||||
|
response.on_destroy = nil;
|
||||||
|
end
|
||||||
|
if response.persistent then
|
||||||
|
response:finish_cb();
|
||||||
|
else
|
||||||
|
response.conn:close();
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
local serve_uploaded_files = http_files.serve({ path = storage_path, mime_map = mime_map });
|
||||||
|
|
||||||
|
local function serve_head(event, path)
|
||||||
|
set_cross_domain_headers(event.response);
|
||||||
|
event.response.send = send_response_sans_body;
|
||||||
|
event.response.send_file = send_response_sans_body;
|
||||||
|
return serve_uploaded_files(event, path);
|
||||||
|
end
|
||||||
|
|
||||||
|
if httpserver.send_head_response then
|
||||||
|
-- Prosody will take care of HEAD requests since hg:3f4c25425589
|
||||||
|
serve_head = nil
|
||||||
|
end
|
||||||
|
|
||||||
|
local function serve_hello(event)
|
||||||
|
event.response.headers.content_type = "text/html;charset=utf-8"
|
||||||
|
return "<!DOCTYPE html>\n<h1>Hello from mod_"..module.name.." on "..module.host.."!</h1>\n";
|
||||||
|
end
|
||||||
|
|
||||||
|
module:provides("http", {
|
||||||
|
route = {
|
||||||
|
["GET"] = serve_hello;
|
||||||
|
["GET /"] = serve_hello;
|
||||||
|
["GET /*"] = serve_uploaded_files;
|
||||||
|
["HEAD /*"] = serve_head;
|
||||||
|
["PUT /*"] = upload_data;
|
||||||
|
|
||||||
|
["OPTIONS /*"] = function (event)
|
||||||
|
set_cross_domain_headers(event.response);
|
||||||
|
return "";
|
||||||
|
end;
|
||||||
|
};
|
||||||
|
});
|
||||||
|
|
||||||
|
module:log("info", "URL: <%s> - Ensure this can be reached by users", module:http_url());
|
||||||
|
module:log("info", "Storage path: '%s'", storage_path);
|
||||||
|
|
||||||
|
function module.command(args)
|
||||||
|
datamanager = require "core.storagemanager".olddm;
|
||||||
|
-- luacheck: ignore 421/user
|
||||||
|
if args[1] == "expire" then
|
||||||
|
local split = require "util.jid".prepped_split;
|
||||||
|
for i = 2, #args do
|
||||||
|
local user, host = split(args[i]);
|
||||||
|
if user then
|
||||||
|
assert(expire(user, host));
|
||||||
|
else
|
||||||
|
for user in assert(datamanager.users(host, module.name, "list")) do
|
||||||
|
expire(user, host);
|
||||||
|
end
|
||||||
|
end
|
||||||
|
end
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
|
||||||
|
|
27
stuff.lisp
27
stuff.lisp
|
@ -1,5 +1,7 @@
|
||||||
(in-package :whatsxmpp)
|
(in-package :whatsxmpp)
|
||||||
|
|
||||||
|
(defparameter +version+ "0.0.1")
|
||||||
|
|
||||||
(defparameter +streams-ns+ "urn:ietf:params:xml:ns:xmpp-streams")
|
(defparameter +streams-ns+ "urn:ietf:params:xml:ns:xmpp-streams")
|
||||||
(defparameter +stanzas-ns+ "urn:ietf:params:xml:ns:xmpp-stanzas")
|
(defparameter +stanzas-ns+ "urn:ietf:params:xml:ns:xmpp-stanzas")
|
||||||
(defparameter +component-ns+ "jabber:component:accept")
|
(defparameter +component-ns+ "jabber:component:accept")
|
||||||
|
@ -2109,21 +2111,30 @@ Returns three values: avatar data (as two values), and a generalized boolean spe
|
||||||
|
|
||||||
#+sbcl
|
#+sbcl
|
||||||
(defun report-error-and-die (err)
|
(defun report-error-and-die (err)
|
||||||
(format t "ERROR: ~A~%Backtrace: ~A~%" err
|
(format *error-output* "[!] Fatal error, bridge aborting!~%")
|
||||||
(trivial-backtrace:print-backtrace err))
|
(trivial-backtrace:print-backtrace err
|
||||||
|
:output *error-output*)
|
||||||
(sb-ext:exit :code 1 :abort t))
|
(sb-ext:exit :code 1 :abort t))
|
||||||
|
|
||||||
#+sbcl
|
#+sbcl
|
||||||
(defun main ()
|
(defun main ()
|
||||||
"Hacky main() function for running this in 'the real world' (outside emacs)"
|
"Hacky main() function for running this in 'the real world' (outside emacs)"
|
||||||
(let ((*default-database-path* (elt sb-ext:*posix-argv* 1)))
|
|
||||||
(format t "Using database at ~A~%" *default-database-path*)
|
|
||||||
(setf swank:*configure-emacs-indentation* nil)
|
|
||||||
(swank:create-server :dont-close t)
|
|
||||||
(setf *debugger-hook* (lambda (condition hook)
|
(setf *debugger-hook* (lambda (condition hook)
|
||||||
(declare (ignore hook))
|
(declare (ignore hook))
|
||||||
(report-error-and-die condition)))
|
(report-error-and-die condition)))
|
||||||
(format t "*mario voice* Here we go!~%")
|
(when (< (length sb-ext:*posix-argv*) 2)
|
||||||
|
(format *error-output* "fatal: a path to the database must be provided~%")
|
||||||
|
(format *error-output* "usage: ~A DATABASE_PATH~%" (elt sb-ext:*posix-argv* 0))
|
||||||
|
(sb-ext:exit :code 2 :abort t))
|
||||||
|
(let ((*default-database-path* (elt sb-ext:*posix-argv* 1)))
|
||||||
|
(format t "[*] whatsxmpp version ~A / an eta project <https://theta.eu.org>~%" +version+)
|
||||||
|
(format t "[+] Using database at ~A~%" *default-database-path*)
|
||||||
|
#+use-swank
|
||||||
|
(block nil
|
||||||
|
(format t "[+] Starting SWANK server~%")
|
||||||
|
(setf swank:*configure-emacs-indentation* nil)
|
||||||
|
(swank:create-server :dont-close t))
|
||||||
|
(format t "[+] Initializing bridge~%")
|
||||||
(setf *comp* (whatsxmpp-init))
|
(setf *comp* (whatsxmpp-init))
|
||||||
(on :error *comp* (lambda (e)
|
(on :error *comp* (lambda (e)
|
||||||
(report-error-and-die e)))
|
(report-error-and-die e)))
|
||||||
|
@ -2137,7 +2148,7 @@ Returns three values: avatar data (as two values), and a generalized boolean spe
|
||||||
(bt:with-lock-held (lock)
|
(bt:with-lock-held (lock)
|
||||||
(bt:condition-wait condvar lock))))))
|
(bt:condition-wait condvar lock))))))
|
||||||
|
|
||||||
#+sbcl
|
#+use-swank
|
||||||
(uiop:register-image-dump-hook
|
(uiop:register-image-dump-hook
|
||||||
(lambda ()
|
(lambda ()
|
||||||
(swank-loader:init
|
(swank-loader:init
|
||||||
|
|
|
@ -1,5 +1,5 @@
|
||||||
(defsystem "whatsxmpp"
|
(defsystem "whatsxmpp"
|
||||||
:depends-on ("usocket" "bordeaux-threads" "event-emitter" "blackbird" "cxml" "ironclad" "uuid" "sqlite" "whatscl" "drakma" "local-time" "trivial-timers" "swank" "trivial-backtrace" "trivial-mimes")
|
:depends-on ("usocket" "bordeaux-threads" "event-emitter" "blackbird" "cxml" "ironclad" "uuid" "sqlite" "whatscl" "drakma" "local-time" "trivial-timers" "trivial-backtrace" "trivial-mimes")
|
||||||
:serial t
|
:serial t
|
||||||
:build-operation "program-op"
|
:build-operation "program-op"
|
||||||
:build-pathname "whatsxmpp"
|
:build-pathname "whatsxmpp"
|
||||||
|
|
Loading…
Reference in a new issue