A Quick Look At Parity’s Signature Registry Contract

Created Mar 14 2017, last updated Aug 1 2017.

Address: 0x44691B39d1a75dC4E0A0346CBB15E310e6ED1E86

//! A decentralised registry of 4-bytes signatures => method mappings
//! By Parity Team (Ethcore), 2016.
//! Released under the Apache Licence 2.

pragma solidity ^0.4.1;

contract Owned {
  modifier only_owner {
    if (msg.sender != owner) return;
    _;
  }

  event NewOwner(address indexed old, address indexed current);

  function setOwner(address _new) only_owner { NewOwner(owner, _new); owner = _new; }

  address public owner = msg.sender;
}

contract SignatureReg is Owned {
  // mapping of signatures to entries
  mapping (bytes4 => string) public entries;

  // the total count of registered signatures
  uint public totalSignatures = 0;

  // allow only new calls to go in
  modifier when_unregistered(bytes4 _signature) {
    if (bytes(entries[_signature]).length != 0) return;
    _;
  }

  // dispatched when a new signature is registered
  event Registered(address indexed creator, bytes4 indexed signature, string method);

  // constructor with self-registration
  function SignatureReg() {
    register('register(string)');
  }

  // registers a method mapping
  function register(string _method) returns (bool) {
    return _register(bytes4(sha3(_method)), _method);
  }

  // internal register function, signature => method
  function _register(bytes4 _signature, string _method) internal when_unregistered(_signature) returns (bool) {
    entries[_signature] = _method;
    totalSignatures = totalSignatures + 1;
    Registered(msg.sender, _signature, _method);
    return true;
  }

  // in the case of any extra funds
  function drain() only_owner {
    if (!msg.sender.send(this.balance)) {
      throw;
    }
  }
}

And the ABI:

[{"constant":false,"inputs":[{"name":"_new","type":"address"}],"name":"setOwner","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalSignatures","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"drain","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"","type":"bytes4"}],"name":"entries","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_method","type":"string"}],"name":"register","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"inputs":[],"type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"creator","type":"address"},{"indexed":true,"name":"signature","type":"bytes4"},{"indexed":false,"name":"method","type":"string"}],"name":"Registered","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"old","type":"address"},{"indexed":true,"name":"current","type":"address"}],"name":"NewOwner","type":"event"}]

Using the following script:

#!/bin/sh
# Get Parity Signature  Registry Data
#
# Enjoy. (c) BokkyPooBah, 2017. The MIT License.

geth attach rpc:http://localhost:8545 << EOF

var registryAddress = "0x44691B39d1a75dC4E0A0346CBB15E310e6ED1E86";
var registryABI = [{"constant":false,"inputs":[{"name":"_new","type":"address"}],"name":"setOwner","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalSignatures","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"drain","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"","type":"bytes4"}],"name":"entries","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_method","type":"string"}],"name":"register","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"inputs":[],"type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"creator","type":"address"},{"indexed":true,"name":"signature","type":"bytes4"},{"indexed":false,"name":"method","type":"string"}],"name":"Registered","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"old","type":"address"},{"indexed":true,"name":"current","type":"address"}],"name":"NewOwner","type":"event"}];
var registryCreationBlock = 2468384;

var registry = eth.contract(registryABI).at(registryAddress);

var totalSignatures = registry.totalSignatures();

console.log("totalSignatures: " + totalSignatures);

var registeredEvent = registry.Registered({}, { fromBlock: registryCreationBlock, toBlock: 'latest' });
var i = 0;
registeredEvent.watch(function (error, result) {
    // console.log(i++ + ": " + JSON.stringify(result));
    console.log(i++ + ": " + result.args.signature + " => " + result.args.method);
});

EOF

I get the following contents of the registry:

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)