commit aadd6d2346f4b9f1f976db7ffb71466b13af2ae9
Author: lash <dev@holbrook.no>
Date: Fri, 17 Feb 2023 22:53:00 +0000
Initial commit
Diffstat:
8 files changed, 250 insertions(+), 0 deletions(-)
diff --git a/python/eth_event_msg/__init__.py b/python/eth_event_msg/__init__.py
@@ -0,0 +1,84 @@
+# standard imports
+import os
+import logging
+
+# external imports
+from chainlib.eth.tx import TxFormat
+from chainlib.eth.tx import TxFactory
+from chainlib.eth.constant import ZERO_ADDRESS
+from chainlib.jsonrpc import JSONRPCRequest
+from chainlib.eth.contract import ABIContractEncoder
+from chainlib.eth.contract import ABIContractType
+from hexathon import strip_0x
+from hexathon import add_0x
+
+moddir = os.path.dirname(__file__)
+datadir = os.path.join(moddir, 'data')
+
+logg = logging.getLogger(__name__)
+
+
+class EventMsg(TxFactory):
+
+ __abi = None
+ __bytecode = None
+
+ @staticmethod
+ def abi():
+ if EventMsg.__abi == None:
+ f = open(os.path.join(datadir, 'Msg.json'), 'r')
+ EventMsg.__abi = json.load(f)
+ f.close()
+ return EventMsg.__abi
+
+
+ @staticmethod
+ def bytecode(version=None):
+ if EventMsg.__bytecode == None:
+ f = open(os.path.join(datadir, 'Msg.bin'))
+ EventMsg.__bytecode = f.read()
+ f.close()
+ return EventMsg.__bytecode
+
+
+ @staticmethod
+ def gas(code=None):
+ return 4000000
+
+
+ def constructor(self, sender_address, tx_format=TxFormat.JSONRPC, version=None):
+ code = self.cargs(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(version=None):
+ return EventMsg.bytecode()
+
+
+ def to_hash(self, contract_address, v, sender_address=ZERO_ADDRESS, id_generator=None):
+ j = JSONRPCRequest(id_generator)
+ o = j.template()
+ o['method'] = 'eth_call'
+ enc = ABIContractEncoder()
+ enc.method('toHash')
+ enc.typ(ABIContractType.BYTES)
+ enc.bytes(v)
+ data = add_0x(enc.get())
+ tx = self.template(sender_address, contract_address)
+ tx = self.set_code(tx, data)
+ o['params'].append(self.normalize(tx))
+ o['params'].append('latest')
+ o = j.finalize(o)
+ return o
+
+
+ @classmethod
+ def parse_token_spec(self, v):
+ v = strip_0x(v)
+ l = int(v[64:128], 16)
+ logg.debug('llll {} {}'.format(l, v[64:128]))
+ r = v[128:128+(l*2)]
+ return r
diff --git a/python/eth_event_msg/data/Msg.bin b/python/eth_event_msg/data/Msg.bin
@@ -0,0 +1 @@
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+\ No newline at end of file
diff --git a/python/eth_event_msg/data/Msg.json b/python/eth_event_msg/data/Msg.json
@@ -0,0 +1 @@
+[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bool","name":"_final","type":"bool"},{"indexed":false,"internalType":"uint256","name":"_sealState","type":"uint256"}],"name":"SealStateChange","type":"event"},{"inputs":[{"internalType":"uint8","name":"_length","type":"uint8"},{"internalType":"uint64","name":"_codecId","type":"uint64"},{"internalType":"string","name":"_uriPrefix","type":"string"}],"name":"addCodec","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_state","type":"uint256"}],"name":"isSealed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxSealState","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"multiCodecs","outputs":[{"internalType":"uint8","name":"l","type":"uint8"},{"internalType":"uint8","name":"codecRLength","type":"uint8"},{"internalType":"uint8","name":"prefixRLength","type":"uint8"},{"internalType":"bytes16","name":"prefix","type":"bytes16"},{"internalType":"bytes8","name":"codec","type":"bytes8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_state","type":"uint256"}],"name":"seal","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"sealState","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_codec","type":"uint256"}],"name":"setMsgCodec","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes","name":"_digest","type":"bytes"}],"name":"toHash","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"view","type":"function"}]
diff --git a/python/requirements.txt b/python/requirements.txt
@@ -0,0 +1 @@
+chainlib-eth~=0.4.16
diff --git a/python/test_requirements.txt b/python/test_requirements.txt
@@ -0,0 +1,2 @@
+eth_tester==0.5.0b3
+py-evm==0.3.0a20
diff --git a/python/tests/test_basic.py b/python/tests/test_basic.py
@@ -0,0 +1,52 @@
+# standard imports
+import os
+import unittest
+import json
+import logging
+
+# external imports
+from chainlib.eth.unittest.ethtester import EthTesterCase
+from chainlib.eth.nonce import RPCNonceOracle
+from chainlib.connection import RPCConnection
+from chainlib.eth.tx import receipt
+from chainlib.eth.address import to_checksum_address
+
+# local imports
+from eth_event_msg import EventMsg
+
+logging.basicConfig(level=logging.DEBUG)
+logg = logging.getLogger()
+
+
+hash_of_foo = '2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae'
+
+
+class Test(EthTesterCase):
+
+ def setUp(self):
+ super(Test, self).setUp()
+ nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
+ c = EventMsg(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
+ (tx_hash, o) = c.constructor(self.accounts[0])
+ self.conn = RPCConnection.connect(self.chain_spec, 'default')
+ r = self.conn.do(o)
+ o = receipt(tx_hash)
+ rr = self.conn.do(o)
+ self.assertEqual(rr['status'], 1)
+ logg.debug('smart contract published with hash {}'.format(r))
+ self.address = to_checksum_address(rr['contract_address'])
+
+
+ def test_set_codec(self):
+ nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
+ c = EventMsg(self.chain_spec) #, signer=self.signer, nonce_oracle=nonce_oracle)
+ o = c.to_hash(self.address, hash_of_foo, sender_address=self.accounts[0])
+ r = self.conn.do(o)
+ mh = c.parse_token_spec(r)
+ self.assertEqual(mh[:4], '1220')
+ self.assertEqual(mh[4:68], hash_of_foo)
+
+
+if __name__ == '__main__':
+ unittest.main()
+
diff --git a/solidity/Makefile b/solidity/Makefile
@@ -0,0 +1,11 @@
+SOLC = /usr/bin/solc
+
+all:
+ $(SOLC) --bin Msg.sol --evm-version byzantium | awk 'NR>3' > Msg.bin
+ truncate -s -1 Msg.bin
+ $(SOLC) --abi Msg.sol --evm-version byzantium | awk 'NR>3' > Msg.json
+
+install-py: all
+ cp -v Msg*{json,bin} ../python/eth_event_msg/data/
+
+install: install-py
diff --git a/solidity/Msg.sol b/solidity/Msg.sol
@@ -0,0 +1,97 @@
+pragma solidity >=0.6.0;
+
+contract Msg {
+
+ struct MultiHash {
+ uint8 l;
+ uint8 codecRLength;
+ uint8 prefixRLength;
+ bytes16 prefix;
+ bytes8 codec;
+ }
+
+ mapping (uint256 => MultiHash) public multiCodecs;
+ MultiHash msgCodec;
+
+ // Implements Sealer
+ uint256 public sealState;
+ uint8 constant CODECLIST_STATE = 1;
+ uint8 constant CODEC_STATE = 2;
+ uint256 constant public maxSealState = 3;
+ event SealStateChange(bool indexed _final, uint256 _sealState);
+
+ constructor() {
+ addCodec(32, 0x12, "sha256");
+ setMsgCodec(0x12);
+ }
+
+ function addCodec(uint8 _length, uint64 _codecId, string memory _uriPrefix) public {
+ bytes memory prefixBytes;
+
+ prefixBytes = bytes(_uriPrefix);
+ require(prefixBytes.length <= 16, 'ERR_PREFIX_TOO_LONG');
+ MultiHash memory _hsh;
+ uint8 c;
+
+ c = 7;
+ while (c >= 0) {
+ uint64 mask = uint64(0xff << (c * 8));
+ if ((mask & _codecId) > 0) {
+ break;
+ }
+ c--;
+ }
+ _hsh.codecRLength = c + 1;
+ _hsh.codec = bytes8(_codecId << ((7 - c) * 8));
+ _hsh.prefixRLength = uint8(prefixBytes.length);
+ _hsh.prefix = bytes16(prefixBytes);
+ _hsh.l = _length;
+
+ multiCodecs[uint256(_codecId)] = _hsh;
+ }
+
+ function setMsgCodec(uint256 _codec) public {
+ MultiHash storage _hsh;
+
+ _hsh = multiCodecs[_codec];
+ require(_hsh.l > 0);
+
+ msgCodec = _hsh;
+ }
+
+ // Implements Sealer
+ function seal(uint256 _state) public returns(uint256) {
+ require(_state < 16, 'ERR_INVALID_STATE');
+ require(_state & sealState == 0, 'ERR_ALREADY_LOCKED');
+ sealState |= _state;
+ emit SealStateChange(sealState == maxSealState, sealState);
+ return uint256(sealState);
+ }
+
+ // Implements Sealer
+ function isSealed(uint256 _state) public view returns(bool) {
+ require(_state < maxSealState);
+ if (_state == 0) {
+ return sealState == maxSealState;
+ }
+ return _state & sealState == _state;
+ }
+
+ function toHash(bytes memory _digest) public view returns(bytes memory) {
+ bytes memory r = new bytes(_digest.length + msgCodec.l + msgCodec.codecRLength);
+
+
+ uint256 i = 0;
+ for (i; i < msgCodec.codecRLength; i++) {
+ r[i] = msgCodec.codec[i];
+ }
+ r[i] = bytes1(msgCodec.l);
+ i++;
+ for (uint256 j = 0; j < _digest.length; j++) {
+ r[i+j] = _digest[j];
+ }
+
+ return r;
+ }
+
+}
