commit 40934a4882281802fb7b9bc5457eadbb3b4c5bfb
Author: lash <dev@holbrook.no>
Date: Mon, 29 May 2023 14:49:52 +0100
Initial commit
Diffstat:
17 files changed, 973 insertions(+), 0 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1,6 @@
+__pycache__
+*.pyc
+build/
+*.egg-info
+solidity/*.json
+solidity/*.bin
diff --git a/python/LICENSE b/python/LICENSE
@@ -0,0 +1,661 @@
+ GNU AFFERO GENERAL PUBLIC LICENSE
+ Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
+
+ The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works. By contrast,
+our General Public Licenses are intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+ Developers that use our General Public Licenses protect your rights
+with two steps: (1) assert copyright on the software, and (2) offer
+you this License which gives you legal permission to copy, distribute
+and/or modify the software.
+
+ A secondary benefit of defending all users' freedom is that
+improvements made in alternate versions of the program, if they
+receive widespread use, become available for other developers to
+incorporate. Many developers of free software are heartened and
+encouraged by the resulting cooperation. However, in the case of
+software used on network servers, this result may fail to come about.
+The GNU General Public License permits making a modified version and
+letting the public access it on a server without ever releasing its
+source code to the public.
+
+ The GNU Affero General Public License is designed specifically to
+ensure that, in such cases, the modified source code becomes available
+to the community. It requires the operator of a network server to
+provide the source code of the modified version running there to the
+users of that server. Therefore, public use of a modified version, on
+a publicly accessible server, gives the public access to the source
+code of the modified version.
+
+ An older license, called the Affero General Public License and
+published by Affero, was designed to accomplish similar goals. This is
+a different license, not a version of the Affero GPL, but Affero has
+released a new version of the Affero GPL which permits relicensing under
+this license.
+
+ The precise terms and conditions for copying, distribution and
+modification follow.
+
+ TERMS AND CONDITIONS
+
+ 0. Definitions.
+
+ "This License" refers to version 3 of the GNU Affero General Public License.
+
+ "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+ "The Program" refers to any copyrightable work licensed under this
+License. Each licensee is addressed as "you". "Licensees" and
+"recipients" may be individuals or organizations.
+
+ To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy. The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+ A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+ To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy. Propagation includes copying,
+distribution (with or without modification), making available to the
+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"
+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
+work under this License, and how to view a copy of this License. If
+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.
+
+ The "source code" for a work means the preferred form of the work
+for making modifications to it. "Object code" means any non-source
+form of a work.
+
+ A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+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
+"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
+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
+same work.
+
+ 2. Basic Permissions.
+
+ All rights granted under this License are granted for the term of
+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
+content, constitutes a covered work. This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+ 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
+not control copyright. Those thus making or running the covered works
+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.
+
+ Conveying under any other circumstances is permitted solely under
+the conditions stated below. Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+ 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+ No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+ When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+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.
+
+ 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.
+
+ 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.
+
+ You may convey a work based on the Program, or the modifications to
+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:
+
+ a) The work must carry prominent notices stating that you modified
+ it, and giving a relevant date.
+
+ b) The work must carry prominent notices stating that it is
+ released under this License and any conditions added under section
+ 7. This requirement modifies the requirement in section 4 to
+ "keep intact all notices".
+
+ 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
+ only if you received the object code with such an offer, in accord
+ with subsection 6b.
+
+ 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.
+
+ 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. Remote Network Interaction; Use with the GNU General Public License.
+
+ Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
+supports such interaction) an opportunity to receive the Corresponding
+Source of your version by providing access to the Corresponding Source
+from a network server at no charge, through some standard or customary
+means of facilitating copying of software. This Corresponding Source
+shall include the Corresponding Source for any work covered by version 3
+of the GNU General Public License that is incorporated pursuant to the
+following paragraph.
+
+ 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 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 work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+ 14. Revised Versions of this License.
+
+ The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero 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 Affero 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 Affero 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 Affero 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 Affero 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 Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero 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 your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source. For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code. There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+ 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 AGPL, see
+<https://www.gnu.org/licenses/>.
diff --git a/python/evm_booking/__init__.py b/python/evm_booking/__init__.py
@@ -0,0 +1 @@
+from .booking import Booking
diff --git a/python/evm_booking/booking.py b/python/evm_booking/booking.py
@@ -0,0 +1,91 @@
+# standard imports
+import logging
+import os
+import enum
+
+# external imports
+from chainlib.eth.constant import ZERO_ADDRESS
+from chainlib.eth.contract import (
+ ABIContractEncoder,
+ ABIContractDecoder,
+ ABIContractType,
+ abi_decode_single,
+)
+from chainlib.eth.jsonrpc import to_blockheight_param
+from chainlib.eth.error import RequestMismatchException
+from chainlib.eth.tx import (
+ TxFactory,
+ TxFormat,
+)
+from chainlib.jsonrpc import JSONRPCRequest
+from chainlib.block import BlockSpec
+from hexathon import (
+ add_0x,
+ strip_0x,
+)
+from chainlib.eth.cli.encode import CLIEncoder
+
+# local imports
+from evm_booking.data import data_dir
+
+logg = logging.getLogger()
+
+
+
+class Booking(TxFactory):
+
+ __abi = None
+ __bytecode = None
+
+ def constructor(self, sender_address, cap, tx_format=TxFormat.JSONRPC, version=None):
+ code = self.cargs(cap, version=version)
+ tx = self.template(sender_address, None, use_nonce=True)
+ tx = self.set_code(tx, code)
+ return self.finalize(tx, tx_format)
+
+
+ @staticmethod
+ def cargs(cap, version=None):
+ code = Booking.bytecode(version=version)
+ enc = ABIContractEncoder()
+ enc.uint256(cap)
+ args = enc.get()
+ code += args
+ logg.debug('constructor code: ' + args)
+ return code
+
+
+ @staticmethod
+ def gas(code=None):
+ return 4000000
+
+
+
+ @staticmethod
+ def abi():
+ if Booking.__abi == None:
+ f = open(os.path.join(data_dir, 'Booking.json'), 'r')
+ Booking.__abi = json.load(f)
+ f.close()
+ return Booking.__abi
+
+
+ @staticmethod
+ def bytecode(version=None):
+ if Booking.__bytecode == None:
+ f = open(os.path.join(data_dir, 'Booking.bin'))
+ Booking.__bytecode = f.read()
+ f.close()
+ return Booking.__bytecode
+
+
+ def reserve(self, contract_address, sender_address, count, tx_format=TxFormat.JSONRPC, id_generator=None):
+ enc = ABIContractEncoder()
+ enc.method('create')
+ enc.typ(ABIContractType.UINT256)
+ enc.uint256(count)
+ data = add_0x(enc.get())
+ tx = self.template(sender_address, contract_address, use_nonce=True)
+ tx = self.set_code(tx, data)
+ tx = self.finalize(tx, tx_format, id_generator=id_generator)
+ return tx
diff --git a/python/evm_booking/data/Booking.bin b/python/evm_booking/data/Booking.bin
@@ -0,0 +1 @@
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
+\ No newline at end of file
diff --git a/python/evm_booking/data/Booking.json b/python/evm_booking/data/Booking.json
@@ -0,0 +1 @@
+[{"inputs":[{"internalType":"uint256","name":"_resolution","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"uint256","name":"_offset","type":"uint256"},{"internalType":"uint256","name":"_count","type":"uint256"}],"name":"reserve","outputs":[],"stateMutability":"nonpayable","type":"function"}]
diff --git a/python/evm_booking/data/Booking.metadata.json b/python/evm_booking/data/Booking.metadata.json
@@ -0,0 +1 @@
+{"compiler":{"version":"0.8.19+commit.7dd6d404"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"uint256","name":"_resolution","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"uint256","name":"_offset","type":"uint256"},{"internalType":"uint256","name":"_count","type":"uint256"}],"name":"reserve","outputs":[],"stateMutability":"nonpayable","type":"function"}],"devdoc":{"kind":"dev","methods":{},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"compilationTarget":{"Booking.sol":"ERC20Book"},"evmVersion":"byzantium","libraries":{},"metadata":{"bytecodeHash":"ipfs"},"optimizer":{"enabled":false,"runs":200},"remappings":[]},"sources":{"Booking.sol":{"keccak256":"0xbaa486209a1cd02dd0930156a575dfc6cb2f7fec90b59b5890eaa72aa4a02b32","license":"AGPL-3.0-or-later","urls":["bzz-raw://bc0d5001d4c0b53479cc7e0d8d42e2ed0ebf4ca9bf5007042dd28a7d2be957bb","dweb:/ipfs/QmWEpzsFZtUYxS4y4oXwQjQEk8j511CtFh15WgvamYWBvT"]}},"version":1}
diff --git a/python/evm_booking/data/__init__.py b/python/evm_booking/data/__init__.py
@@ -0,0 +1,3 @@
+import os
+
+data_dir = os.path.realpath(os.path.dirname(__file__))
diff --git a/python/evm_booking/unittest/__init__.py b/python/evm_booking/unittest/__init__.py
@@ -0,0 +1 @@
+from .base import TestBooking
diff --git a/python/evm_booking/unittest/base.py b/python/evm_booking/unittest/base.py
@@ -0,0 +1,43 @@
+# standard imports
+import logging
+import time
+
+# external imports
+from chainlib.eth.unittest.ethtester import EthTesterCase
+from chainlib.connection import RPCConnection
+from chainlib.eth.nonce import RPCNonceOracle
+from chainlib.eth.tx import receipt
+from chainlib.eth.address import to_checksum_address
+from giftable_erc20_token.unittest import TestGiftableToken
+from evm_booking import Booking
+from chainlib.eth.block import block_latest
+
+# local imports
+from evm_booking import Booking
+
+
+logg = logging.getLogger(__name__)
+
+class TestBooking(TestGiftableToken):
+
+ expire = 0
+
+ def setUp(self):
+ super(TestBooking, self).setUp()
+
+ self.alice = self.accounts[1]
+ self.bob = self.accounts[2]
+
+ self.token_address = self.address
+
+
+ def publish(self, mint=False, decimals=0):
+ nonce_oracle = RPCNonceOracle(self.accounts[0], conn=self.conn)
+ c = Booking(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
+ (tx_hash, o) = c.constructor(self.accounts[0], 366 * 24)
+ self.rpc.do(o)
+ o = receipt(tx_hash)
+ r = self.rpc.do(o)
+ self.assertEqual(r['status'], 1)
+ self.vend_address = to_checksum_address(r['contract_address'])
+ logg.debug('published booker on address {} with hash {}'.format(self.vend_address, tx_hash))
diff --git a/python/requirements.txt b/python/requirements.txt
@@ -0,0 +1,2 @@
+eth-erc20~=0.7.3
+chainlib-eth~=0.4.22
diff --git a/python/setup.cfg b/python/setup.cfg
@@ -0,0 +1,35 @@
+[metadata]
+name = evm_booking
+version = 0.0.1
+description = EVM smart contract for time slot booking
+author = Louis Holbrook
+author_email = dev@holbrook.no
+url = https://holbrook.no/src/erc20_vend/log.html
+keywords =
+ dlt
+ blockchain
+ cryptocurrency
+ ethereum
+classifiers =
+ Programming Language :: Python :: 3
+ Operating System :: OS Independent
+ Development Status :: 3 - Alpha
+ Topic :: Software Development :: Libraries
+ Environment :: Console
+ Intended Audience :: Developers
+ License :: OSI Approved :: GNU Affero General Public License v3 or later (AGPLv3+)
+ Topic :: Internet
+# Topic :: Blockchain :: EVM
+license = AGPLv3+
+licence_files =
+ LICENSE
+
+[options]
+include_package_data = True
+python_requires = >= 3.7
+packages =
+ craft_nft
+ craft_nft.runnable
+
+#[options.entry_points]
+#console_scripts =
diff --git a/python/setup.py b/python/setup.py
@@ -0,0 +1,26 @@
+from setuptools import setup
+import os
+
+
+requirements = []
+f = open('requirements.txt', 'r')
+while True:
+ l = f.readline()
+ if l == '':
+ break
+ requirements.append(l.rstrip())
+f.close()
+
+test_requirements = []
+f = open('test_requirements.txt', 'r')
+while True:
+ l = f.readline()
+ if l == '':
+ break
+ test_requirements.append(l.rstrip())
+f.close()
+
+setup(
+ install_requires=requirements,
+ tests_require=test_requirements,
+ )
diff --git a/python/test_requirements.txt b/python/test_requirements.txt
@@ -0,0 +1,4 @@
+eth_tester==0.5.0b3
+py-evm==0.3.0a20
+eth-interface==0.1.1
+eth-writer==0.0.2
diff --git a/python/tests/test_base.py b/python/tests/test_base.py
@@ -0,0 +1,26 @@
+# standard imports
+import unittest
+import logging
+import os
+from chainlib.eth.nonce import RPCNonceOracle
+from chainlib.eth.tx import receipt
+from eth_erc20 import ERC20
+from giftable_erc20_token import GiftableToken
+
+# local imports
+from evm_booking.unittest import TestBooking
+from evm_booking import Booking
+
+
+logging.basicConfig(level=logging.DEBUG)
+logg = logging.getLogger()
+
+
+class TestBookingBase(TestBooking):
+
+ def test_base(self):
+ pass
+
+
+if __name__ == '__main__':
+ unittest.main()
diff --git a/solidity/Booking.sol b/solidity/Booking.sol
@@ -0,0 +1,58 @@
+pragma solidity ^0.8.0;
+
+// Author: Louis Holbrook <dev@holbrook.no> 0826EDA1702D1E87C6E2875121D2E7BB88C2A746
+// SPDX-License-Identifier: AGPL-3.0-or-later
+// File-Version: 1
+// Description: Time slot booking
+
+
+contract ERC20Book {
+ bytes slots;
+ uint256 cap;
+
+ constructor (uint256 _resolution) {
+ require(_resolution > 0 && _resolution < (1 << 128), "ERR_NONSENSE");
+ uint256[2] memory r;
+
+ r = getPos(_resolution);
+ slots = new bytes(r[0] + 1);
+ cap = _resolution;
+ }
+
+ // improve by comparing word by word
+ function reserve(uint256 _offset, uint256 _count) public {
+ uint256[2] memory c;
+ uint256 cy;
+ uint8 ci;
+
+ c = getPos(_offset);
+ cy = c[0];
+ ci = uint8(c[1]);
+
+ for (uint256 i = 0; i < _count; i++) {
+ require(cap > 0, "ERR_CAPACITY");
+ if (uint8(slots[cy]) & ci > 0) {
+ revert("ERR_COLLISION");
+ }
+ slots[cy] = bytes1(uint8(slots[cy]) | ci);
+ if (ci == 7) {
+ cy++;
+ ci = 0;
+ } else {
+ ci++;
+ }
+ cap--;
+ }
+ }
+
+ function getPos(uint256 bit) internal returns (uint256[2] memory) {
+ int256 c;
+ uint256[2] memory r;
+
+ c = (int256(bit) - 1) / 8 + 1 ;
+
+ r[0] = uint256(c);
+ r[1] = r[0] % 8;
+ return r;
+ }
+}
diff --git a/solidity/Makefile b/solidity/Makefile
@@ -0,0 +1,12 @@
+SOLC = /usr/bin/solc
+
+all:
+ $(SOLC) --bin Booking.sol --evm-version byzantium | awk 'NR>3' > Booking.bin
+ $(SOLC) --abi Booking.sol --evm-version byzantium | awk 'NR>3' > Booking.json
+ $(SOLC) --metadata Booking.sol --evm-version byzantium | awk 'NR>3' > Booking.metadata.json
+ truncate -s -1 Booking.bin
+
+install: all
+ cp -v *.json ../python/evm_booking/data/
+ cp -v *.bin ../python/evm_booking/data/
+