以太坊实战【地址监控三】

chaimyu (58)in #cn • 6 years ago (edited)

在以太坊实战【地址监控二】中已经实现了对以太坊交易地址的监控，但是以太坊上还有很多TOKENS，能监控到吗？

token交易测试

布置一个代币合约（可以参考以太坊研究系列贴子），帐号转一次代币VF，用已经实现的方法，调用eth_getBlockByNumber取到的交易数据如下：

"transactions":[{"blockHash":"0x51c9e0e10bfdc01110ff239e9c7bddca68b102741f7b9a3d87dd624a83f9d826","blockNumber":"0x2e10","from":"0x54b865714068f5f03574ace39a1f3279c4e83e2c","gas":"0x21905","gasPrice":"0x430e23400","hash":"0x781942bb5acfed62689ba068e975989461d5b2ef657dd1eff7057bc56de464ce","input":"0xa9059cbb000000000000000000000000823e1c4acbfc6527a6210e9bb9b4d5a45dc9c9a40000000000000000000000000000000000000000000000000000000000000058","nonce":"0x33","to":"0xf66448735c78389acd4834cf7b94d1b7c0d2a91a","transactionIndex":"0x0","value":"0x0","v":"0x42","r":"0xabf55940fbaede52a2706c3c7405e21af42577d8da35446dcf7bbf362ad151fd","s":"0x65e27dca91550fdd2ad8d001c67ebdda228a222d97ccf8ba357d62914192e5a7"}]

我是从地址 0x54b865714068f5F03574ACe39a1F3279C4E83E2c 转代币VF，转到地址 0x823e1C4acBfC6527a6210E9BB9B4d5a45DC9C9A4，从交易数据from字段可以看到发送地址是一样的，但是to地址 0xf66448735c78389acd4834cf7b94d1b7c0d2a91a 并不是我转代币的目标地址。

什么原因呢？以太坊上代币只是一个智能合约，对代币的所有操作都是对智能合约的调用，钱包转代币时实际的操作是调用智能合约的transfer函数，在mist的交易记录里也可以看到，0xf66448735c78389acd4834cf7b94d1b7c0d2a91a 这个地址就是VF智能合约的地址。

那再看看从交易数据有没有办法解析出是哪种代币，同时交易的代币是多少呢？理论上来说，to地址应该是代币合约地址，input中的数据应该包含了调用等数据，解析input这种二进制数据合适吗？

token监控

大概找到了几种方法查询token数量，可以进行监控可能：

解析以太坊数据包，并解析合约调用数据

在上面交易记录里，input数据如下：

"input":"0xa9059cbb000000000000000000000000823e1c4acbfc6527a6210e9bb9b4d5a45dc9c9a40000000000000000000000000000000000000000000000000000000000000058

解析后格式：

Function: transfer(address _to, uint256 _value)

MethodID: 0xa9059cbb
[0]:  000000000000000000000000823e1c4acbfc6527a6210e9bb9b4d5a45dc9c9a4
[1]:  0000000000000000000000000000000000000000000000000000000000000058

通过合约方法调用web3js

既然token是智能合约，而且这些token合约基本是erc20标准的合约，那我们查询到合约地址、abi，就可以直接调用合约的balanceOf()取得指定地址的代币数量，另外合约一般都有Transfer事件，也可以监控交易事件。

etherscan接口调用

内部实现应该也是调用合约接口，只是提供web式调用

https://api.etherscan.io/api?module=account&action=tokenbalance&contractaddress=0x57d90b64a1a57749b0f932f1a3395792e12e7055&address=0xe04f27eb70e025b78871a2ad7eabe85e61212761&tag=latest&apikey=YourApiKeyToken

结论

从研究结果来看，可以解析以太坊的区块数据来监控token的变化，只要to地址是合约地址（可以取到帐户的codeHash），再判断是否需要监控的TOKEN合约地址，解析input数据，是transfer或transferFrom时可以得到转帐数量。

#参考

https://ethereum.stackexchange.com/questions/11710/how-can-i-find-out-the-token-balance-of-some-address

https://github.com/bokkypoobah/TokenTrader/blob/master/scripts/getGNTBalances

ETH和ERC20查询
https://ethereum-balance.com

这个查询不错，我的BEC和CryptoKitties也给查出来了
https://ethplorer.io

以太坊交易数据
https://medium.com/@codetractio/inside-an-ethereum-transaction-fa94ffca912f

https://stackoverflow.com/questions/48004356/get-token-transfer-detail-from-transaction-hash-with-web3js

https://github.com/kentaro/tiperc20/blob/master/token.go

看到有人在找这个method和交易二进制对照表，可能以后也有用，方法见 https://www.bokconsulting.com.au/blog/a-quick-look-at-paritys-signature-registry-contract/

totalSignatures: 189
0: 0xf2c298be => register(string)
1: 0x861731d5 => ()
2: 0x095ea7b3 => approve(address,uint256)
3: 0x23b872dd => transferFrom(address,address,uint256)
4: 0xa9059cbb => transfer(address,uint256)
5: 0x13af4035 => setOwner(address)
6: 0x79ce9fac => transfer(bytes32,address)
7: 0xeadf9760 => setUint(bytes32,string,uint256)
8: 0x47448e8a => set(bytes32,string,bytes32)
9: 0xf6d339e4 => setAddress(bytes32,string,address)
10: 0x69fe0e2d => setFee(uint256)
11: 0x4f39ca59 => drop(bytes32)
12: 0xf25eb5c1 => removeReverse()
13: 0xac4e73f9 => proposeReverse(string,address)
14: 0x432ced04 => reserve(bytes32)
15: 0x3f3935d1 => confirmReverse(string)
16: 0x9890220b => drain()
17: 0x29cbdc86 => buyin(address,uint256)
18: 0x5af36e3e => refund(uint256,uint256)
19: 0xa02b161e => unregister(uint256)
20: 0x66b42dcb => register(address,string,uint256,string)
21: 0xdd93890b => setMeta(uint256,bytes32,bytes32)
22: 0x7b1a547c => registerAs(address,string,uint256,string,address)
23: 0x2196ae0d => hint(bytes32,string,bytes20)
24: 0x7c8c6643 => unhint(bytes32)
25: 0x02f2008d => hintURL(bytes32,string)
26: 0x1a0919dc => unregister(bytes32)
27: 0xc52bd836 => setDappOwner(bytes32,address)
28: 0x91cd242d => setMeta(bytes32,bytes32,bytes32)
29: 0xe1fa8e84 => register(bytes32)
30: 0x4a18695f => triggerPayOut(uint256)
31: 0xd0517bd3 => markSigned()
32: 0xb8b4f1a0 => signContract()
33: 0xb20d30a9 => setDailyLimit(uint256)
34: 0xb75c7dc6 => revoke(bytes32)
35: 0x5c52c2f5 => resetSpentToday()
36: 0x173825d9 => removeOwner(address)
37: 0xcbf0b0c0 => kill(address)
38: 0x2f54bf6e => isOwner(address)
39: 0xb61d27f6 => execute(address,uint256,bytes)
40: 0x797af627 => confirm(bytes32)
41: 0xba51a6df => changeRequirement(uint256)
42: 0xf00d4b5d => changeOwner(address,address)
43: 0x7065cb48 => addOwner(address)
44: 0xca5eb5e1 => setDelegate(address)
45: 0x74a8f103 => revoke(address)
46: 0x338cdca1 => request()
47: 0x3da5c3ce => puzzle(address,bytes32)
48: 0x14253887 => certify(address)
49: 0x26316e58 => setMigrationMaster(address)
50: 0x590e1ae3 => refund()
51: 0x75e2ff65 => setMigrationAgent(address)
52: 0x454b0608 => migrate(uint256)
53: 0xefc81a8c => create()
54: 0x4bb278f3 => finalize()
55: 0xcae9ca51 => approveAndCall(address,uint256,bytes)
56: 0xeb1ff845 => changeId(uint256,uint256,uint256)
57: 0x75090ebf => changeDomain(uint256,uint256,uint256,address)
58: 0x2ebec916 => withdrawalProfit()
59: 0xf2fde38b => transferOwnership(address)
60: 0x523aee69 => changeTokenContract(address)
61: 0x20145328 => changeMelonportAddress(address)
62: 0xdda44b10 => buyRecipient(address,uint8,bytes32,bytes32)
63: 0xd89397b1 => btcsBuyRecipient(address)
64: 0xe5fe4f31 => buy(uint8,bytes32,bytes32)
65: 0xcb3e64fd => unhalt()
66: 0x5ed7ca5b => halt()
67: 0x5de01497 => ownerWithdrawERC20Token(address,uint256)
68: 0x3d6a32bd => createTradeContract(address,uint256,uint256,uint256,bool,bool)
69: 0xc60ccb0e => takerBuyAsset()
70: 0xeff883bd => takerSellAsset(uint256)
71: 0x2170ebf7 => makerWithdrawEther(uint256)
72: 0xcd53a3b7 => makerWithdrawAsset(uint256)
73: 0xc34764cf => makerWithdrawERC20Token(address,uint256)
74: 0x919f8cfc => makerDepositEther()
75: 0x52954e5a => makerTransferAsset(address,uint256)
76: 0xa7abc124 => activate(bool,bool)
77: 0xbe86d5a7 => makerTransferEther(address,uint256)
78: 0xc5e412e5 => createSaleContract(address,uint256,uint256,bool)
79: 0xce5e84a3 => activate(bool)
80: 0x17be89f0 => createTradeContract(address,uint256,uint256,bool)
81: 0x8d92fdf3 => withdrawAsset(uint256)
82: 0x9e281a98 => withdrawToken(address,uint256)
83: 0x2e1a7d4d => withdraw(uint256)
84: 0xa6f2ae3a => buy()
85: 0xbca7a9e2 => lockToken()
86: 0x49606455 => take(bytes32,uint128)
87: 0x093f5198 => make(address,address,uint128,uint128)
88: 0xf09ea2a6 => offer(uint256,address,uint256,address)
89: 0xd6febde8 => buy(uint256,uint256)
90: 0x779997c3 => bump(bytes32)
91: 0x40e58ee5 => cancel(uint256)
92: 0xb4f9b6c8 => kill(bytes32)
93: 0xb4427263 => createTokens()
94: 0xa91ee0dc => setRegistry(address)
95: 0xb660f4c0 => setTargetDragoDAO(address,address)
96: 0xf08d29d5 => createDrago(string,string)
97: 0x74fc5df7 => changeDragoDAO(address)
98: 0x1c31f710 => setBeneficiary(address)
99: 0x0bc1f0d5 => changeGabcoinDAO(address)
100: 0xe96e7a7e => createGabcoin(string,string)
101: 0x05db8f74 => setTargetGabcoinDAO(address,address)
102: 0xbb60160e => setExchange(address,address)
103: 0xf3fef3a3 => withdraw(address,uint256)
104: 0x92a0006c => trade(address,uint256,address,uint256,uint256,address,uint256)
105: 0x808187e5 => finalize(address,uint24)
106: 0x5ae11d5d => order(address,uint256,address,uint256,uint256)
107: 0x279a7094 => orderCFD(address,bool,uint32,uint128)
108: 0xd19d5138 => setCfdMaxLeverage(address,uint24)
109: 0xa7154d22 => cancel(address,uint32)
110: 0x47e7ef24 => deposit(address,uint256)
111: 0x7879de90 => cancelOrder(address,uint256,address,uint256,uint256)
112: 0x0e5c8d41 => addCredits(address,uint256,address,uint256,uint24)
113: 0xc81d1d5b => getPunk(uint256)
114: 0xbed2af80 => getPunk()
115: 0x3ccfd60b => withdraw()
116: 0xf6eeff1e => punkNoLongerForSale(uint256)
117: 0x8b72a2ec => transferPunk(address,uint256)
118: 0x08573a0b => reservePunksForOwner(uint256)
119: 0x62a5af3b => freeze()
120: 0xe5225381 => collect()
121: 0xd1058e59 => claimAll()
122: 0x379607f5 => claim(uint256)
123: 0xc4d66de8 => initialize(address)
124: 0x7a9e5e4b => setAuthority(address)
125: 0xe0cb3aa0 => buyWithLimit(uint256,uint256)
126: 0x40cc8854 => bite(bytes32)
127: 0x080b6132 => chop(uint128)
128: 0xbdf6e771 => cuff(uint128)
129: 0xf5893bd0 => crop(uint128)
130: 0x56371435 => cork(uint128)
131: 0xcbd5accc => cage(uint128)
132: 0x295d3a54 => join(uint128)
133: 0x67c48dd6 => free(bytes32,uint128)
134: 0x9f678cca => drip()
135: 0x69855358 => exit(uint128)
136: 0xa22664ad => draw(bytes32,uint128)
137: 0xc92aecc4 => chi()
138: 0x51f91066 => tag()
139: 0xb84d2106 => shut(bytes32)
140: 0xfcfff16f => open()
141: 0x4b11982e => setCooldown(uint64)
142: 0x07c241aa => lock(bytes32,uint128)
143: 0xbaa8529c => give(bytes32,address)
144: 0x6299c83e => wipe(bytes32,uint128)
145: 0xde3e7a9c => boom(uint128)
146: 0x90089adf => bust(uint128)
147: 0x65d1df24 => s2s()
148: 0x420f2ed9 => jump(uint128)
149: 0xc8d10f40 => warp(uint64)
150: 0xca2201c5 => coax(uint128)
151: 0x495d32cb => par()
152: 0x0302c688 => prod()
153: 0x1406b921 => vent()
154: 0x961be391 => cash()
155: 0x69245009 => cage()
156: 0x44df8e70 => burn()
157: 0x90bc1693 => burn(uint128)
158: 0x7261e469 => burn(address,uint128)
159: 0xbe29184f => mint(address,uint128)
160: 0x8402181f => pull(address,uint128)
161: 0x69d3e20e => mint(uint128)
162: 0x12e5ff77 => exit(address,uint128)
163: 0x89afcb44 => burn(address)
164: 0x6b2113cd => pull(address,address,uint128)
165: 0xceae3abd => join(address,uint128)
166: 0x52d11238 => pull(address)
167: 0x66b3bcb0 => pull(address,address)
168: 0x3c71a7c7 => push(address,address,uint128)
169: 0x89b09de7 => push(address)
170: 0x03438dd0 => swap(address)
171: 0x3452f51d => push(address,uint128)
172: 0xb716ba67 => push(address,address)
173: 0xa57d9ad3 => lend(address,uint128)
174: 0x379f5217 => mend(address,uint128)
175: 0xe0cd1d69 => heal(address)
176: 0x065a50ed => pool(address,uint128)
177: 0x114e11a0 => take(address,uint128)
178: 0xbe9a6555 => start()
179: 0x5ac801fe => setName(bytes32)
180: 0x07da68f5 => stop()
181: 0x67aff484 => setUserRole(address,uint8,bool)
182: 0xd381ba7c => setRootUser(address,bool)
183: 0xc6b0263e => setPublicCapability(address,bytes4,bool)
184: 0x7d40583d => setRoleCapability(uint8,address,bytes4,bool)
185: 0xf0217ce5 => permit(bytes32,bytes32,bytes32)
186: 0xcbeea68c => permit(address,address,bytes32)
187: 0x79d88d87 => forbid(bytes32,bytes32,bytes32)
188: 0x2bc3217d => forbid(address,address,bytes32)

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