Initial commit; receive all eth code from chainlib package
This commit is contained in:
commit
f8afc172c6
6
.gitignore
vendored
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6
.gitignore
vendored
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||||
__pycache__
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||||
gmon.out
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||||
*.pyc
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||||
dist/
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||||
build/
|
||||
*.egg-info
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2
CHANGELOG
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2
CHANGELOG
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@ -0,0 +1,2 @@
|
||||
- 0.0.5-pending
|
||||
* Receive all ethereum components from chainlib package
|
674
LICENSE.txt
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674
LICENSE.txt
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@ -0,0 +1,674 @@
|
||||
GNU GENERAL PUBLIC LICENSE
|
||||
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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The licenses for most software and other practical works are designed
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|
||||
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>.
|
1
MANIFEST.in
Normal file
1
MANIFEST.in
Normal file
@ -0,0 +1 @@
|
||||
include *requirements.txt LICENSE
|
5
README.md
Normal file
5
README.md
Normal file
@ -0,0 +1,5 @@
|
||||
# chainlib-eth
|
||||
|
||||
Ethereum implementation of the chainlib blockchain interface tooling
|
||||
|
||||
See https://gitlab.com/chaintool/chainlib for more information
|
13
chainlib/eth/address.py
Normal file
13
chainlib/eth/address.py
Normal file
@ -0,0 +1,13 @@
|
||||
# third-party imports
|
||||
import sha3
|
||||
from hexathon import (
|
||||
strip_0x,
|
||||
uniform,
|
||||
)
|
||||
from crypto_dev_signer.encoding import (
|
||||
is_address,
|
||||
is_checksum_address,
|
||||
to_checksum_address,
|
||||
)
|
||||
|
||||
to_checksum = to_checksum_address
|
79
chainlib/eth/block.py
Normal file
79
chainlib/eth/block.py
Normal file
@ -0,0 +1,79 @@
|
||||
# third-party imports
|
||||
from chainlib.jsonrpc import JSONRPCRequest
|
||||
from chainlib.eth.tx import Tx
|
||||
from hexathon import (
|
||||
add_0x,
|
||||
strip_0x,
|
||||
even,
|
||||
)
|
||||
|
||||
|
||||
def block_latest(id_generator=None):
|
||||
j = JSONRPCRequest(id_generator)
|
||||
o = j.template()
|
||||
o['method'] = 'eth_blockNumber'
|
||||
return j.finalize(o)
|
||||
|
||||
|
||||
def block_by_hash(hsh, include_tx=True, id_generator=None):
|
||||
j = JSONRPCRequest(id_generator)
|
||||
o = j.template()
|
||||
o['method'] = 'eth_getBlockByHash'
|
||||
o['params'].append(hsh)
|
||||
o['params'].append(include_tx)
|
||||
return j.finalize(o)
|
||||
|
||||
|
||||
def block_by_number(n, include_tx=True, id_generator=None):
|
||||
nhx = add_0x(even(hex(n)[2:]))
|
||||
j = JSONRPCRequest(id_generator)
|
||||
o = j.template()
|
||||
o['method'] = 'eth_getBlockByNumber'
|
||||
o['params'].append(nhx)
|
||||
o['params'].append(include_tx)
|
||||
return j.finalize(o)
|
||||
|
||||
|
||||
def transaction_count(block_hash, id_generator=None):
|
||||
j = JSONRPCRequest(id_generator)
|
||||
o = j.template()
|
||||
o['method'] = 'eth_getBlockTransactionCountByHash'
|
||||
o['params'].append(block_hash)
|
||||
return j.finalize(o)
|
||||
|
||||
|
||||
class Block:
|
||||
|
||||
def __init__(self, src):
|
||||
self.hash = src['hash']
|
||||
try:
|
||||
self.number = int(strip_0x(src['number']), 16)
|
||||
except TypeError:
|
||||
self.number = int(src['number'])
|
||||
self.txs = src['transactions']
|
||||
self.block_src = src
|
||||
try:
|
||||
self.timestamp = int(strip_0x(src['timestamp']), 16)
|
||||
except TypeError:
|
||||
self.timestamp = int(src['timestamp'])
|
||||
|
||||
|
||||
def src(self):
|
||||
return self.block_src
|
||||
|
||||
|
||||
def tx(self, i):
|
||||
return Tx(self.txs[i], self)
|
||||
|
||||
|
||||
def tx_src(self, i):
|
||||
return self.txs[i]
|
||||
|
||||
|
||||
def __str__(self):
|
||||
return 'block {} {} ({} txs)'.format(self.number, self.hash, len(self.txs))
|
||||
|
||||
|
||||
@staticmethod
|
||||
def from_src(src):
|
||||
return Block(src)
|
8
chainlib/eth/chain.py
Normal file
8
chainlib/eth/chain.py
Normal file
@ -0,0 +1,8 @@
|
||||
from chainlib.jsonrpc import JSONRPCRequest
|
||||
|
||||
|
||||
def network_id(id_generator=None):
|
||||
j = JSONRPCRequest(id_generator=id_generator)
|
||||
o = j.template()
|
||||
o['method'] = 'net_version'
|
||||
return j.finalize(o)
|
140
chainlib/eth/connection.py
Normal file
140
chainlib/eth/connection.py
Normal file
@ -0,0 +1,140 @@
|
||||
# standard imports
|
||||
import copy
|
||||
import logging
|
||||
import json
|
||||
import datetime
|
||||
import time
|
||||
import socket
|
||||
from urllib.request import (
|
||||
Request,
|
||||
urlopen,
|
||||
)
|
||||
|
||||
# third-party imports
|
||||
from hexathon import (
|
||||
add_0x,
|
||||
strip_0x,
|
||||
)
|
||||
|
||||
# local imports
|
||||
from .error import (
|
||||
DefaultErrorParser,
|
||||
RevertEthException,
|
||||
)
|
||||
from .sign import (
|
||||
sign_transaction,
|
||||
)
|
||||
from chainlib.connection import (
|
||||
ConnType,
|
||||
RPCConnection,
|
||||
JSONRPCHTTPConnection,
|
||||
JSONRPCUnixConnection,
|
||||
error_parser,
|
||||
)
|
||||
from chainlib.jsonrpc import (
|
||||
JSONRPCRequest,
|
||||
jsonrpc_result,
|
||||
)
|
||||
from chainlib.eth.tx import (
|
||||
unpack,
|
||||
)
|
||||
|
||||
logg = logging.getLogger(__name__)
|
||||
|
||||
|
||||
class EthHTTPConnection(JSONRPCHTTPConnection):
|
||||
|
||||
def wait(self, tx_hash_hex, delay=0.5, timeout=0.0, error_parser=error_parser, id_generator=None):
|
||||
t = datetime.datetime.utcnow()
|
||||
i = 0
|
||||
while True:
|
||||
j = JSONRPCRequest(id_generator)
|
||||
o = j.template()
|
||||
o['method'] ='eth_getTransactionReceipt'
|
||||
o['params'].append(add_0x(tx_hash_hex))
|
||||
o = j.finalize(o)
|
||||
req = Request(
|
||||
self.location,
|
||||
method='POST',
|
||||
)
|
||||
req.add_header('Content-Type', 'application/json')
|
||||
data = json.dumps(o)
|
||||
logg.debug('(HTTP) poll receipt attempt {} {}'.format(i, data))
|
||||
res = urlopen(req, data=data.encode('utf-8'))
|
||||
r = json.load(res)
|
||||
|
||||
e = jsonrpc_result(r, error_parser)
|
||||
if e != None:
|
||||
logg.debug('(HTTP) poll receipt completed {}'.format(r))
|
||||
logg.debug('e {}'.format(strip_0x(e['status'])))
|
||||
if strip_0x(e['status']) == '00':
|
||||
raise RevertEthException(tx_hash_hex)
|
||||
return e
|
||||
|
||||
if timeout > 0.0:
|
||||
delta = (datetime.datetime.utcnow() - t) + datetime.timedelta(seconds=delay)
|
||||
if delta.total_seconds() >= timeout:
|
||||
raise TimeoutError(tx_hash)
|
||||
|
||||
time.sleep(delay)
|
||||
i += 1
|
||||
|
||||
|
||||
def check_rpc(self, id_generator=None):
|
||||
j = JSONRPCRequest(id_generator)
|
||||
req = j.template()
|
||||
req['method'] = 'net_version'
|
||||
req = j.finalize(req)
|
||||
r = self.do(req)
|
||||
|
||||
|
||||
class EthUnixConnection(JSONRPCUnixConnection):
|
||||
|
||||
def wait(self, tx_hash_hex, delay=0.5, timeout=0.0, error_parser=error_parser):
|
||||
raise NotImplementedError('Not yet implemented for unix socket')
|
||||
|
||||
|
||||
def sign_transaction_to_rlp(chain_spec, doer, tx):
|
||||
txs = tx.serialize()
|
||||
logg.debug('serializing {}'.format(txs))
|
||||
# TODO: because some rpc servers may fail when chainId is included, we are forced to spend cpu here on this
|
||||
chain_id = txs.get('chainId') or 1
|
||||
if chain_spec != None:
|
||||
chain_id = chain_spec.chain_id()
|
||||
txs['chainId'] = add_0x(chain_id.to_bytes(2, 'big').hex())
|
||||
txs['from'] = add_0x(tx.sender)
|
||||
o = sign_transaction(txs)
|
||||
r = doer(o)
|
||||
logg.debug('sig got {}'.format(r))
|
||||
return bytes.fromhex(strip_0x(r))
|
||||
|
||||
|
||||
def sign_message(doer, msg):
|
||||
o = sign_message(msg)
|
||||
return doer(o)
|
||||
|
||||
|
||||
class EthUnixSignerConnection(EthUnixConnection):
|
||||
|
||||
def sign_transaction_to_rlp(self, tx):
|
||||
return sign_transaction_to_rlp(self.chain_spec, self.do, tx)
|
||||
|
||||
|
||||
def sign_message(self, tx):
|
||||
return sign_message(self.do, tx)
|
||||
|
||||
|
||||
class EthHTTPSignerConnection(EthHTTPConnection):
|
||||
|
||||
def sign_transaction_to_rlp(self, tx):
|
||||
return sign_transaction_to_rlp(self.chain_spec, self.do, tx)
|
||||
|
||||
|
||||
def sign_message(self, tx):
|
||||
return sign_message(self.do, tx)
|
||||
|
||||
|
||||
|
||||
RPCConnection.register_constructor(ConnType.HTTP, EthHTTPConnection, tag='eth_default')
|
||||
RPCConnection.register_constructor(ConnType.HTTP_SSL, EthHTTPConnection, tag='eth_default')
|
||||
RPCConnection.register_constructor(ConnType.UNIX, EthUnixConnection, tag='eth_default')
|
5
chainlib/eth/constant.py
Normal file
5
chainlib/eth/constant.py
Normal file
@ -0,0 +1,5 @@
|
||||
ZERO_ADDRESS = '0x{:040x}'.format(0)
|
||||
ZERO_CONTENT = '0x{:064x}'.format(0)
|
||||
MINIMUM_FEE_UNITS = 21000
|
||||
MINIMUM_FEE_PRICE = 1000000000
|
||||
MAX_UINT = int('0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff', 16)
|
328
chainlib/eth/contract.py
Normal file
328
chainlib/eth/contract.py
Normal file
@ -0,0 +1,328 @@
|
||||
# standard imports
|
||||
import enum
|
||||
import re
|
||||
import logging
|
||||
|
||||
# external imports
|
||||
from hexathon import (
|
||||
strip_0x,
|
||||
pad,
|
||||
)
|
||||
|
||||
# local imports
|
||||
from chainlib.hash import keccak256_string_to_hex
|
||||
from chainlib.block import BlockSpec
|
||||
from chainlib.jsonrpc import JSONRPCRequest
|
||||
from .address import to_checksum_address
|
||||
|
||||
#logg = logging.getLogger(__name__)
|
||||
logg = logging.getLogger()
|
||||
|
||||
|
||||
re_method = r'^[a-zA-Z0-9_]+$'
|
||||
|
||||
class ABIContractType(enum.Enum):
|
||||
|
||||
BYTES32 = 'bytes32'
|
||||
BYTES4 = 'bytes4'
|
||||
UINT256 = 'uint256'
|
||||
ADDRESS = 'address'
|
||||
STRING = 'string'
|
||||
BOOLEAN = 'bool'
|
||||
|
||||
dynamic_contract_types = [
|
||||
ABIContractType.STRING,
|
||||
]
|
||||
|
||||
|
||||
class ABIContract:
|
||||
|
||||
def __init__(self):
|
||||
self.types = []
|
||||
self.contents = []
|
||||
|
||||
|
||||
class ABIMethodEncoder(ABIContract):
|
||||
|
||||
def __init__(self):
|
||||
super(ABIMethodEncoder, self).__init__()
|
||||
self.method_name = None
|
||||
self.method_contents = []
|
||||
|
||||
|
||||
def method(self, m):
|
||||
if re.match(re_method, m) == None:
|
||||
raise ValueError('Invalid method {}, must match regular expression {}'.format(re_method))
|
||||
self.method_name = m
|
||||
self.__log_method()
|
||||
|
||||
|
||||
def get_method(self):
|
||||
if self.method_name == None:
|
||||
return ''
|
||||
return '{}({})'.format(self.method_name, ','.join(self.method_contents))
|
||||
|
||||
|
||||
def typ(self, v):
|
||||
if self.method_name == None:
|
||||
raise AttributeError('method name must be set before adding types')
|
||||
if not isinstance(v, ABIContractType):
|
||||
raise TypeError('method type not valid; expected {}, got {}'.format(type(ABIContractType).__name__, type(v).__name__))
|
||||
self.method_contents.append(v.value)
|
||||
self.__log_method()
|
||||
|
||||
|
||||
def __log_method(self):
|
||||
logg.debug('method set to {}'.format(self.get_method()))
|
||||
|
||||
|
||||
|
||||
class ABIContractDecoder:
|
||||
|
||||
|
||||
def typ(self, v):
|
||||
if not isinstance(v, ABIContractType):
|
||||
raise TypeError('method type not valid; expected {}, got {}'.format(type(ABIContractType).__name__, type(v).__name__))
|
||||
self.types.append(v.value)
|
||||
self.__log_typ()
|
||||
|
||||
|
||||
def val(self, v):
|
||||
self.contents.append(v)
|
||||
logg.debug('content is now {}'.format(self.contents))
|
||||
|
||||
|
||||
def uint256(self, v):
|
||||
return int(v, 16)
|
||||
|
||||
|
||||
def bytes32(self, v):
|
||||
return v
|
||||
|
||||
|
||||
def bool(self, v):
|
||||
return bool(self.uint256(v))
|
||||
|
||||
|
||||
def boolean(self, v):
|
||||
return bool(self.uint256(v))
|
||||
|
||||
|
||||
def address(self, v):
|
||||
a = strip_0x(v)[64-40:]
|
||||
return to_checksum_address(a)
|
||||
|
||||
|
||||
def string(self, v):
|
||||
s = strip_0x(v)
|
||||
b = bytes.fromhex(s)
|
||||
cursor = 0
|
||||
offset = int.from_bytes(b[cursor:cursor+32], 'big')
|
||||
cursor += 32
|
||||
length = int.from_bytes(b[cursor:cursor+32], 'big')
|
||||
cursor += 32
|
||||
content = b[cursor:cursor+length]
|
||||
logg.debug('parsing string offset {} length {} content {}'.format(offset, length, content))
|
||||
return content.decode('utf-8')
|
||||
|
||||
|
||||
def __log_typ(self):
|
||||
logg.debug('types set to ({})'.format(','.join(self.types)))
|
||||
|
||||
|
||||
def decode(self):
|
||||
r = []
|
||||
logg.debug('contents {}'.format(self.contents))
|
||||
for i in range(len(self.types)):
|
||||
m = getattr(self, self.types[i])
|
||||
s = self.contents[i]
|
||||
logg.debug('{} {} {} {} {}'.format(i, m, self.types[i], self.contents[i], s))
|
||||
r.append(m(s.hex()))
|
||||
return r
|
||||
|
||||
|
||||
def get(self):
|
||||
return self.decode()
|
||||
|
||||
|
||||
def __str__(self):
|
||||
return self.decode()
|
||||
|
||||
|
||||
class ABIContractLogDecoder(ABIMethodEncoder, ABIContractDecoder):
|
||||
|
||||
def __init__(self):
|
||||
super(ABIContractLogDecoder, self).__init__()
|
||||
self.method_name = None
|
||||
self.indexed_content = []
|
||||
|
||||
|
||||
def topic(self, event):
|
||||
self.method(event)
|
||||
|
||||
|
||||
def get_method_signature(self):
|
||||
s = self.get_method()
|
||||
return keccak256_string_to_hex(s)
|
||||
|
||||
|
||||
def typ(self, v):
|
||||
super(ABIContractLogDecoder, self).typ(v)
|
||||
self.types.append(v.value)
|
||||
|
||||
|
||||
def apply(self, topics, data):
|
||||
t = self.get_method_signature()
|
||||
if topics[0] != t:
|
||||
raise ValueError('topic mismatch')
|
||||
for i in range(len(topics) - 1):
|
||||
self.contents.append(topics[i+1])
|
||||
self.contents += data
|
||||
|
||||
|
||||
class ABIContractEncoder(ABIMethodEncoder):
|
||||
|
||||
def __log_latest(self, v):
|
||||
l = len(self.types) - 1
|
||||
logg.debug('Encoder added {} -> {} ({})'.format(v, self.contents[l], self.types[l].value))
|
||||
|
||||
|
||||
def uint256(self, v):
|
||||
v = int(v)
|
||||
b = v.to_bytes(32, 'big')
|
||||
self.contents.append(b.hex())
|
||||
self.types.append(ABIContractType.UINT256)
|
||||
self.__log_latest(v)
|
||||
|
||||
|
||||
def bool(self, v):
|
||||
return self.boolean(v)
|
||||
|
||||
|
||||
def boolean(self, v):
|
||||
if bool(v):
|
||||
return self.uint256(1)
|
||||
return self.uint256(0)
|
||||
|
||||
|
||||
def address(self, v):
|
||||
self.bytes_fixed(32, v, 20)
|
||||
self.types.append(ABIContractType.ADDRESS)
|
||||
self.__log_latest(v)
|
||||
|
||||
|
||||
def bytes32(self, v):
|
||||
self.bytes_fixed(32, v)
|
||||
self.types.append(ABIContractType.BYTES32)
|
||||
self.__log_latest(v)
|
||||
|
||||
|
||||
def bytes4(self, v):
|
||||
self.bytes_fixed(4, v)
|
||||
self.types.append(ABIContractType.BYTES4)
|
||||
self.__log_latest(v)
|
||||
|
||||
|
||||
|
||||
def string(self, v):
|
||||
b = v.encode('utf-8')
|
||||
l = len(b)
|
||||
contents = l.to_bytes(32, 'big')
|
||||
contents += b
|
||||
padlen = 32 - (l % 32)
|
||||
contents += padlen * b'\x00'
|
||||
self.bytes_fixed(len(contents), contents)
|
||||
self.types.append(ABIContractType.STRING)
|
||||
self.__log_latest(v)
|
||||
return contents
|
||||
|
||||
|
||||
def bytes_fixed(self, mx, v, exact=0):
|
||||
typ = type(v).__name__
|
||||
if typ == 'str':
|
||||
v = strip_0x(v)
|
||||
l = len(v)
|
||||
if exact > 0 and l != exact * 2:
|
||||
raise ValueError('value wrong size; expected {}, got {})'.format(mx, l))
|
||||
if l > mx * 2:
|
||||
raise ValueError('value too long ({})'.format(l))
|
||||
v = pad(v, mx)
|
||||
elif typ == 'bytes':
|
||||
l = len(v)
|
||||
if exact > 0 and l != exact:
|
||||
raise ValueError('value wrong size; expected {}, got {})'.format(mx, l))
|
||||
b = bytearray(mx)
|
||||
b[mx-l:] = v
|
||||
v = pad(b.hex(), mx)
|
||||
else:
|
||||
raise ValueError('invalid input {}'.format(typ))
|
||||
self.contents.append(v.ljust(64, '0'))
|
||||
|
||||
|
||||
|
||||
def get_method_signature(self):
|
||||
s = self.get_method()
|
||||
if s == '':
|
||||
return s
|
||||
return keccak256_string_to_hex(s)[:8]
|
||||
|
||||
|
||||
def get_contents(self):
|
||||
direct_contents = ''
|
||||
pointer_contents = ''
|
||||
l = len(self.types)
|
||||
pointer_cursor = 32 * l
|
||||
for i in range(l):
|
||||
if self.types[i] in dynamic_contract_types:
|
||||
content_length = len(self.contents[i])
|
||||
pointer_contents += self.contents[i]
|
||||
direct_contents += pointer_cursor.to_bytes(32, 'big').hex()
|
||||
pointer_cursor += int(content_length / 2)
|
||||
else:
|
||||
direct_contents += self.contents[i]
|
||||
s = ''.join(direct_contents + pointer_contents)
|
||||
for i in range(0, len(s), 64):
|
||||
l = len(s) - i
|
||||
if l > 64:
|
||||
l = 64
|
||||
logg.debug('code word {} {}'.format(int(i / 64), s[i:i+64]))
|
||||
return s
|
||||
|
||||
|
||||
def get(self):
|
||||
return self.encode()
|
||||
|
||||
|
||||
def encode(self):
|
||||
m = self.get_method_signature()
|
||||
c = self.get_contents()
|
||||
return m + c
|
||||
|
||||
|
||||
def __str__(self):
|
||||
return self.encode()
|
||||
|
||||
|
||||
|
||||
def abi_decode_single(typ, v):
|
||||
d = ABIContractDecoder()
|
||||
d.typ(typ)
|
||||
d.val(v)
|
||||
r = d.decode()
|
||||
return r[0]
|
||||
|
||||
|
||||
def code(address, block_spec=BlockSpec.LATEST, id_generator=None):
|
||||
block_height = None
|
||||
if block_spec == BlockSpec.LATEST:
|
||||
block_height = 'latest'
|
||||
elif block_spec == BlockSpec.PENDING:
|
||||
block_height = 'pending'
|
||||
else:
|
||||
block_height = int(block_spec)
|
||||
j = JSONRPCRequest(id_generator)
|
||||
o = j.template()
|
||||
o['method'] = 'eth_getCode'
|
||||
o['params'].append(address)
|
||||
o['params'].append(block_height)
|
||||
return j.finalize(o)
|
23
chainlib/eth/error.py
Normal file
23
chainlib/eth/error.py
Normal file
@ -0,0 +1,23 @@
|
||||
# local imports
|
||||
from chainlib.error import ExecutionError
|
||||
|
||||
class EthException(Exception):
|
||||
pass
|
||||
|
||||
|
||||
class RevertEthException(EthException, ExecutionError):
|
||||
pass
|
||||
|
||||
|
||||
class NotFoundEthException(EthException):
|
||||
pass
|
||||
|
||||
|
||||
class RequestMismatchException(EthException):
|
||||
pass
|
||||
|
||||
|
||||
class DefaultErrorParser:
|
||||
|
||||
def translate(self, error):
|
||||
return EthException('default parser code {}'.format(error))
|
149
chainlib/eth/gas.py
Normal file
149
chainlib/eth/gas.py
Normal file
@ -0,0 +1,149 @@
|
||||
# standard imports
|
||||
import logging
|
||||
|
||||
# third-party imports
|
||||
from hexathon import (
|
||||
add_0x,
|
||||
strip_0x,
|
||||
)
|
||||
from crypto_dev_signer.eth.transaction import EIP155Transaction
|
||||
|
||||
# local imports
|
||||
from chainlib.hash import keccak256_hex_to_hex
|
||||
from chainlib.jsonrpc import JSONRPCRequest
|
||||
from chainlib.eth.tx import (
|
||||
TxFactory,
|
||||
TxFormat,
|
||||
raw,
|
||||
)
|
||||
from chainlib.eth.constant import (
|
||||
MINIMUM_FEE_UNITS,
|
||||
)
|
||||
|
||||
logg = logging.getLogger(__name__)
|
||||
|
||||
|
||||
def price(id_generator=None):
|
||||
j = JSONRPCRequest(id_generator)
|
||||
o = j.template()
|
||||
o['method'] = 'eth_gasPrice'
|
||||
return j.finalize(o)
|
||||
|
||||
|
||||
def balance(address, id_generator=None):
|
||||
j = JSONRPCRequest(id_generator)
|
||||
o = j.template()
|
||||
o['method'] = 'eth_getBalance'
|
||||
o['params'].append(address)
|
||||
o['params'].append('latest')
|
||||
return j.finalize(o)
|
||||
|
||||
|
||||
def parse_balance(balance):
|
||||
try:
|
||||
r = int(balance, 10)
|
||||
except ValueError:
|
||||
r = int(balance, 16)
|
||||
return r
|
||||
|
||||
|
||||
class Gas(TxFactory):
|
||||
|
||||
def create(self, sender_address, recipient_address, value, tx_format=TxFormat.JSONRPC, id_generator=None):
|
||||
tx = self.template(sender_address, recipient_address, use_nonce=True)
|
||||
tx['value'] = value
|
||||
txe = EIP155Transaction(tx, tx['nonce'], tx['chainId'])
|
||||
tx_raw = self.signer.sign_transaction_to_rlp(txe)
|
||||
tx_raw_hex = add_0x(tx_raw.hex())
|
||||
tx_hash_hex = add_0x(keccak256_hex_to_hex(tx_raw_hex))
|
||||
|
||||
o = None
|
||||
if tx_format == TxFormat.JSONRPC:
|
||||
o = raw(tx_raw_hex, id_generator=id_generator)
|
||||
elif tx_format == TxFormat.RLP_SIGNED:
|
||||
o = tx_raw_hex
|
||||
|
||||
return (tx_hash_hex, o)
|
||||
|
||||
|
||||
|
||||
class RPCGasOracle:
|
||||
|
||||
def __init__(self, conn, code_callback=None, min_price=1, id_generator=None):
|
||||
self.conn = conn
|
||||
self.code_callback = code_callback
|
||||
self.min_price = min_price
|
||||
self.id_generator = id_generator
|
||||
|
||||
|
||||
def get_gas(self, code=None):
|
||||
gas_price = 0
|
||||
if self.conn != None:
|
||||
o = price(id_generator=self.id_generator)
|
||||
r = self.conn.do(o)
|
||||
n = strip_0x(r)
|
||||
gas_price = int(n, 16)
|
||||
fee_units = MINIMUM_FEE_UNITS
|
||||
if self.code_callback != None:
|
||||
fee_units = self.code_callback(code)
|
||||
if gas_price < self.min_price:
|
||||
logg.debug('adjusting price {} to set minimum {}'.format(gas_price, self.min_price))
|
||||
gas_price = self.min_price
|
||||
return (gas_price, fee_units)
|
||||
|
||||
|
||||
class RPCPureGasOracle(RPCGasOracle):
|
||||
|
||||
def __init__(self, conn, code_callback=None, id_generator=None):
|
||||
super(RPCPureGasOracle, self).__init__(conn, code_callback=code_callback, min_price=0, id_generator=id_generator)
|
||||
|
||||
|
||||
class OverrideGasOracle(RPCGasOracle):
|
||||
|
||||
def __init__(self, price=None, limit=None, conn=None, code_callback=None, id_generator=None):
|
||||
self.conn = None
|
||||
self.code_callback = None
|
||||
self.limit = limit
|
||||
self.price = price
|
||||
|
||||
price_conn = None
|
||||
|
||||
if self.limit == None or self.price == None:
|
||||
if self.price == None:
|
||||
price_conn = conn
|
||||
logg.debug('override gas oracle with rpc fallback; price {} limit {}'.format(self.price, self.limit))
|
||||
|
||||
super(OverrideGasOracle, self).__init__(price_conn, code_callback, id_generator=id_generator)
|
||||
|
||||
|
||||
def get_gas(self, code=None):
|
||||
r = None
|
||||
fee_units = None
|
||||
fee_price = None
|
||||
|
||||
rpc_results = super(OverrideGasOracle, self).get_gas(code)
|
||||
|
||||
if self.limit != None:
|
||||
fee_units = self.limit
|
||||
if self.price != None:
|
||||
fee_price = self.price
|
||||
|
||||
if fee_price == None:
|
||||
if rpc_results != None:
|
||||
fee_price = rpc_results[0]
|
||||
logg.debug('override gas oracle without explicit price, setting from rpc {}'.format(fee_price))
|
||||
else:
|
||||
fee_price = MINIMUM_FEE_PRICE
|
||||
logg.debug('override gas oracle without explicit price, setting default {}'.format(fee_price))
|
||||
if fee_units == None:
|
||||
if rpc_results != None:
|
||||
fee_units = rpc_results[1]
|
||||
logg.debug('override gas oracle without explicit limit, setting from rpc {}'.format(fee_units))
|
||||
else:
|
||||
fee_units = MINIMUM_FEE_UNITS
|
||||
logg.debug('override gas oracle without explicit limit, setting default {}'.format(fee_units))
|
||||
|
||||
return (fee_price, fee_units)
|
||||
|
||||
|
||||
DefaultGasOracle = RPCGasOracle
|
16
chainlib/eth/jsonrpc.py
Normal file
16
chainlib/eth/jsonrpc.py
Normal file
@ -0,0 +1,16 @@
|
||||
# proposed custom errors
|
||||
# source: https://eth.wiki/json-rpc/json-rpc-error-codes-improvement-proposal
|
||||
|
||||
#1 Unauthorized Should be used when some action is not authorized, e.g. sending from a locked account.
|
||||
#2 Action not allowed Should be used when some action is not allowed, e.g. preventing an action, while another depending action is processing on, like sending again when a confirmation popup is shown to the user (?).
|
||||
#3 Execution error Will contain a subset of custom errors in the data field. See below.
|
||||
|
||||
#100 X doesn’t exist Should be used when something which should be there is not found. (Doesn’t apply to eth_getTransactionBy_ and eth_getBlock_. They return a success with value null)
|
||||
#101 Requires ether Should be used for actions which require somethin else, e.g. gas or a value.
|
||||
#102 Gas too low Should be used when a to low value of gas was given.
|
||||
#103 Gas limit exceeded Should be used when a limit is exceeded, e.g. for the gas limit in a block.
|
||||
#104 Rejected Should be used when an action was rejected, e.g. because of its content (too long contract code, containing wrong characters ?, should differ from -32602 - Invalid params).
|
||||
#105 Ether too low Should be used when a to low value of Ether was given.
|
||||
|
||||
#106 Timeout Should be used when an action timedout.
|
||||
#107 Conflict Should be used when an action conflicts with another (ongoing?) action.
|
24
chainlib/eth/log.py
Normal file
24
chainlib/eth/log.py
Normal file
@ -0,0 +1,24 @@
|
||||
# external imports
|
||||
import sha3
|
||||
|
||||
|
||||
class LogBloom:
|
||||
|
||||
def __init__(self):
|
||||
self.content = bytearray(256)
|
||||
|
||||
|
||||
def add(self, element):
|
||||
if not isinstance(element, bytes):
|
||||
raise ValueError('element must be bytes')
|
||||
h = sha3.keccak_256()
|
||||
h.update(element)
|
||||
z = h.digest()
|
||||
|
||||
for j in range(3):
|
||||
c = j * 2
|
||||
v = int.from_bytes(z[c:c+2], byteorder='big')
|
||||
v &= 0x07ff
|
||||
m = 255 - int(v / 8)
|
||||
n = v % 8
|
||||
self.content[m] |= (1 << n)
|
63
chainlib/eth/nonce.py
Normal file
63
chainlib/eth/nonce.py
Normal file
@ -0,0 +1,63 @@
|
||||
# third-party imports
|
||||
from hexathon import (
|
||||
add_0x,
|
||||
strip_0x,
|
||||
)
|
||||
|
||||
# local imports
|
||||
from chainlib.jsonrpc import JSONRPCRequest
|
||||
|
||||
|
||||
def nonce(address, id_generator=None):
|
||||
j = JSONRPCRequest(id_generator)
|
||||
o = j.template()
|
||||
o['method'] = 'eth_getTransactionCount'
|
||||
o['params'].append(address)
|
||||
o['params'].append('pending')
|
||||
return j.finalize(o)
|
||||
|
||||
|
||||
class NonceOracle:
|
||||
|
||||
def __init__(self, address, id_generator=None):
|
||||
self.address = address
|
||||
self.id_generator = id_generator
|
||||
self.nonce = self.get_nonce()
|
||||
|
||||
|
||||
def get_nonce(self):
|
||||
raise NotImplementedError('Class must be extended')
|
||||
|
||||
|
||||
def next_nonce(self):
|
||||
n = self.nonce
|
||||
self.nonce += 1
|
||||
return n
|
||||
|
||||
|
||||
class RPCNonceOracle(NonceOracle):
|
||||
|
||||
def __init__(self, address, conn, id_generator=None):
|
||||
self.conn = conn
|
||||
super(RPCNonceOracle, self).__init__(address, id_generator=id_generator)
|
||||
|
||||
|
||||
def get_nonce(self):
|
||||
o = nonce(self.address, id_generator=self.id_generator)
|
||||
r = self.conn.do(o)
|
||||
n = strip_0x(r)
|
||||
return int(n, 16)
|
||||
|
||||
|
||||
class OverrideNonceOracle(NonceOracle):
|
||||
|
||||
def __init__(self, address, nonce):
|
||||
self.nonce = nonce
|
||||
super(OverrideNonceOracle, self).__init__(address)
|
||||
|
||||
|
||||
def get_nonce(self):
|
||||
return self.nonce
|
||||
|
||||
|
||||
DefaultNonceOracle = RPCNonceOracle
|
3
chainlib/eth/pytest/__init__.py
Normal file
3
chainlib/eth/pytest/__init__.py
Normal file