common/releases: voting based signer authorizations

common/releases/contract.go

@@ -0,0 +1,310 @@
+// This file is an automatically generated Go binding. Do not modify as any
+// change will likely be lost upon the next re-generation!
+
+package releases
+
+import (
+	"strings"
+
+	"github.com/ethereum/go-ethereum/accounts/abi"
+	"github.com/ethereum/go-ethereum/accounts/abi/bind"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+)
+
+// ReleaseOracleABI is the input ABI used to generate the binding from.
+const ReleaseOracleABI = `[{"constant":true,"inputs":[],"name":"AuthProposals","outputs":[{"name":"","type":"address[]"}],"type":"function"},{"constant":false,"inputs":[{"name":"user","type":"address"}],"name":"Promote","outputs":[],"type":"function"},{"constant":false,"inputs":[{"name":"user","type":"address"},{"name":"authorize","type":"bool"}],"name":"updateStatus","outputs":[],"type":"function"},{"constant":false,"inputs":[{"name":"user","type":"address"}],"name":"Demote","outputs":[],"type":"function"},{"constant":true,"inputs":[{"name":"user","type":"address"}],"name":"AuthVotes","outputs":[{"name":"promote","type":"address[]"},{"name":"demote","type":"address[]"}],"type":"function"},{"constant":true,"inputs":[],"name":"Signers","outputs":[{"name":"","type":"address[]"}],"type":"function"},{"inputs":[],"type":"constructor"}]`
+
+// ReleaseOracleBin is the compiled bytecode used for deploying new contracts.
+const ReleaseOracleBin = `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`
+
+// DeployReleaseOracle deploys a new Ethereum contract, binding an instance of ReleaseOracle to it.
+func DeployReleaseOracle(auth *bind.TransactOpts, backend bind.ContractBackend) (common.Address, *types.Transaction, *ReleaseOracle, error) {
+	parsed, err := abi.JSON(strings.NewReader(ReleaseOracleABI))
+	if err != nil {
+		return common.Address{}, nil, nil, err
+	}
+	address, tx, contract, err := bind.DeployContract(auth, parsed, common.FromHex(ReleaseOracleBin), backend)
+	if err != nil {
+		return common.Address{}, nil, nil, err
+	}
+	return address, tx, &ReleaseOracle{ReleaseOracleCaller: ReleaseOracleCaller{contract: contract}, ReleaseOracleTransactor: ReleaseOracleTransactor{contract: contract}}, nil
+}
+
+// ReleaseOracle is an auto generated Go binding around an Ethereum contract.
+type ReleaseOracle struct {
+	ReleaseOracleCaller     // Read-only binding to the contract
+	ReleaseOracleTransactor // Write-only binding to the contract
+}
+
+// ReleaseOracleCaller is an auto generated read-only Go binding around an Ethereum contract.
+type ReleaseOracleCaller struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// ReleaseOracleTransactor is an auto generated write-only Go binding around an Ethereum contract.
+type ReleaseOracleTransactor struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// ReleaseOracleSession is an auto generated Go binding around an Ethereum contract,
+// with pre-set call and transact options.
+type ReleaseOracleSession struct {
+	Contract     *ReleaseOracle    // Generic contract binding to set the session for
+	CallOpts     bind.CallOpts     // Call options to use throughout this session
+	TransactOpts bind.TransactOpts // Transaction auth options to use throughout this session
+}
+
+// ReleaseOracleCallerSession is an auto generated read-only Go binding around an Ethereum contract,
+// with pre-set call options.
+type ReleaseOracleCallerSession struct {
+	Contract *ReleaseOracleCaller // Generic contract caller binding to set the session for
+	CallOpts bind.CallOpts        // Call options to use throughout this session
+}
+
+// ReleaseOracleTransactorSession is an auto generated write-only Go binding around an Ethereum contract,
+// with pre-set transact options.
+type ReleaseOracleTransactorSession struct {
+	Contract     *ReleaseOracleTransactor // Generic contract transactor binding to set the session for
+	TransactOpts bind.TransactOpts        // Transaction auth options to use throughout this session
+}
+
+// ReleaseOracleRaw is an auto generated low-level Go binding around an Ethereum contract.
+type ReleaseOracleRaw struct {
+	Contract *ReleaseOracle // Generic contract binding to access the raw methods on
+}
+
+// ReleaseOracleCallerRaw is an auto generated low-level read-only Go binding around an Ethereum contract.
+type ReleaseOracleCallerRaw struct {
+	Contract *ReleaseOracleCaller // Generic read-only contract binding to access the raw methods on
+}
+
+// ReleaseOracleTransactorRaw is an auto generated low-level write-only Go binding around an Ethereum contract.
+type ReleaseOracleTransactorRaw struct {
+	Contract *ReleaseOracleTransactor // Generic write-only contract binding to access the raw methods on
+}
+
+// NewReleaseOracle creates a new instance of ReleaseOracle, bound to a specific deployed contract.
+func NewReleaseOracle(address common.Address, backend bind.ContractBackend) (*ReleaseOracle, error) {
+	contract, err := bindReleaseOracle(address, backend.(bind.ContractCaller), backend.(bind.ContractTransactor))
+	if err != nil {
+		return nil, err
+	}
+	return &ReleaseOracle{ReleaseOracleCaller: ReleaseOracleCaller{contract: contract}, ReleaseOracleTransactor: ReleaseOracleTransactor{contract: contract}}, nil
+}
+
+// NewReleaseOracleCaller creates a new read-only instance of ReleaseOracle, bound to a specific deployed contract.
+func NewReleaseOracleCaller(address common.Address, caller bind.ContractCaller) (*ReleaseOracleCaller, error) {
+	contract, err := bindReleaseOracle(address, caller, nil)
+	if err != nil {
+		return nil, err
+	}
+	return &ReleaseOracleCaller{contract: contract}, nil
+}
+
+// NewReleaseOracleTransactor creates a new write-only instance of ReleaseOracle, bound to a specific deployed contract.
+func NewReleaseOracleTransactor(address common.Address, transactor bind.ContractTransactor) (*ReleaseOracleTransactor, error) {
+	contract, err := bindReleaseOracle(address, nil, transactor)
+	if err != nil {
+		return nil, err
+	}
+	return &ReleaseOracleTransactor{contract: contract}, nil
+}
+
+// bindReleaseOracle binds a generic wrapper to an already deployed contract.
+func bindReleaseOracle(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor) (*bind.BoundContract, error) {
+	parsed, err := abi.JSON(strings.NewReader(ReleaseOracleABI))
+	if err != nil {
+		return nil, err
+	}
+	return bind.NewBoundContract(address, parsed, caller, transactor), nil
+}
+
+// Call invokes the (constant) contract method with params as input values and
+// sets the output to result. The result type might be a single field for simple
+// returns, a slice of interfaces for anonymous returns and a struct for named
+// returns.
+func (_ReleaseOracle *ReleaseOracleRaw) Call(opts *bind.CallOpts, result interface{}, method string, params ...interface{}) error {
+	return _ReleaseOracle.Contract.ReleaseOracleCaller.contract.Call(opts, result, method, params...)
+}
+
+// Transfer initiates a plain transaction to move funds to the contract, calling
+// its default method if one is available.
+func (_ReleaseOracle *ReleaseOracleRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _ReleaseOracle.Contract.ReleaseOracleTransactor.contract.Transfer(opts)
+}
+
+// Transact invokes the (paid) contract method with params as input values.
+func (_ReleaseOracle *ReleaseOracleRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
+	return _ReleaseOracle.Contract.ReleaseOracleTransactor.contract.Transact(opts, method, params...)
+}
+
+// Call invokes the (constant) contract method with params as input values and
+// sets the output to result. The result type might be a single field for simple
+// returns, a slice of interfaces for anonymous returns and a struct for named
+// returns.
+func (_ReleaseOracle *ReleaseOracleCallerRaw) Call(opts *bind.CallOpts, result interface{}, method string, params ...interface{}) error {
+	return _ReleaseOracle.Contract.contract.Call(opts, result, method, params...)
+}
+
+// Transfer initiates a plain transaction to move funds to the contract, calling
+// its default method if one is available.
+func (_ReleaseOracle *ReleaseOracleTransactorRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _ReleaseOracle.Contract.contract.Transfer(opts)
+}
+
+// Transact invokes the (paid) contract method with params as input values.
+func (_ReleaseOracle *ReleaseOracleTransactorRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
+	return _ReleaseOracle.Contract.contract.Transact(opts, method, params...)
+}
+
+// AuthProposals is a free data retrieval call binding the contract method 0x282fe4e5.
+//
+// Solidity: function AuthProposals() constant returns(address[])
+func (_ReleaseOracle *ReleaseOracleCaller) AuthProposals(opts *bind.CallOpts) ([]common.Address, error) {
+	var (
+		ret0 = new([]common.Address)
+	)
+	out := ret0
+	err := _ReleaseOracle.contract.Call(opts, out, "AuthProposals")
+	return *ret0, err
+}
+
+// AuthProposals is a free data retrieval call binding the contract method 0x282fe4e5.
+//
+// Solidity: function AuthProposals() constant returns(address[])
+func (_ReleaseOracle *ReleaseOracleSession) AuthProposals() ([]common.Address, error) {
+	return _ReleaseOracle.Contract.AuthProposals(&_ReleaseOracle.CallOpts)
+}
+
+// AuthProposals is a free data retrieval call binding the contract method 0x282fe4e5.
+//
+// Solidity: function AuthProposals() constant returns(address[])
+func (_ReleaseOracle *ReleaseOracleCallerSession) AuthProposals() ([]common.Address, error) {
+	return _ReleaseOracle.Contract.AuthProposals(&_ReleaseOracle.CallOpts)
+}
+
+// AuthVotes is a free data retrieval call binding the contract method 0xa29226f2.
+//
+// Solidity: function AuthVotes(user address) constant returns(promote address[], demote address[])
+func (_ReleaseOracle *ReleaseOracleCaller) AuthVotes(opts *bind.CallOpts, user common.Address) (struct {
+	Promote []common.Address
+	Demote  []common.Address
+}, error) {
+	ret := new(struct {
+		Promote []common.Address
+		Demote  []common.Address
+	})
+	out := ret
+	err := _ReleaseOracle.contract.Call(opts, out, "AuthVotes", user)
+	return *ret, err
+}
+
+// AuthVotes is a free data retrieval call binding the contract method 0xa29226f2.
+//
+// Solidity: function AuthVotes(user address) constant returns(promote address[], demote address[])
+func (_ReleaseOracle *ReleaseOracleSession) AuthVotes(user common.Address) (struct {
+	Promote []common.Address
+	Demote  []common.Address
+}, error) {
+	return _ReleaseOracle.Contract.AuthVotes(&_ReleaseOracle.CallOpts, user)
+}
+
+// AuthVotes is a free data retrieval call binding the contract method 0xa29226f2.
+//
+// Solidity: function AuthVotes(user address) constant returns(promote address[], demote address[])
+func (_ReleaseOracle *ReleaseOracleCallerSession) AuthVotes(user common.Address) (struct {
+	Promote []common.Address
+	Demote  []common.Address
+}, error) {
+	return _ReleaseOracle.Contract.AuthVotes(&_ReleaseOracle.CallOpts, user)
+}
+
+// Signers is a free data retrieval call binding the contract method 0xf04c4758.
+//
+// Solidity: function Signers() constant returns(address[])
+func (_ReleaseOracle *ReleaseOracleCaller) Signers(opts *bind.CallOpts) ([]common.Address, error) {
+	var (
+		ret0 = new([]common.Address)
+	)
+	out := ret0
+	err := _ReleaseOracle.contract.Call(opts, out, "Signers")
+	return *ret0, err
+}
+
+// Signers is a free data retrieval call binding the contract method 0xf04c4758.
+//
+// Solidity: function Signers() constant returns(address[])
+func (_ReleaseOracle *ReleaseOracleSession) Signers() ([]common.Address, error) {
+	return _ReleaseOracle.Contract.Signers(&_ReleaseOracle.CallOpts)
+}
+
+// Signers is a free data retrieval call binding the contract method 0xf04c4758.
+//
+// Solidity: function Signers() constant returns(address[])
+func (_ReleaseOracle *ReleaseOracleCallerSession) Signers() ([]common.Address, error) {
+	return _ReleaseOracle.Contract.Signers(&_ReleaseOracle.CallOpts)
+}
+
+// Demote is a paid mutator transaction binding the contract method 0x80bbbd4a.
+//
+// Solidity: function Demote(user address) returns()
+func (_ReleaseOracle *ReleaseOracleTransactor) Demote(opts *bind.TransactOpts, user common.Address) (*types.Transaction, error) {
+	return _ReleaseOracle.contract.Transact(opts, "Demote", user)
+}
+
+// Demote is a paid mutator transaction binding the contract method 0x80bbbd4a.
+//
+// Solidity: function Demote(user address) returns()
+func (_ReleaseOracle *ReleaseOracleSession) Demote(user common.Address) (*types.Transaction, error) {
+	return _ReleaseOracle.Contract.Demote(&_ReleaseOracle.TransactOpts, user)
+}
+
+// Demote is a paid mutator transaction binding the contract method 0x80bbbd4a.
+//
+// Solidity: function Demote(user address) returns()
+func (_ReleaseOracle *ReleaseOracleTransactorSession) Demote(user common.Address) (*types.Transaction, error) {
+	return _ReleaseOracle.Contract.Demote(&_ReleaseOracle.TransactOpts, user)
+}
+
+// Promote is a paid mutator transaction binding the contract method 0x6195db9c.
+//
+// Solidity: function Promote(user address) returns()
+func (_ReleaseOracle *ReleaseOracleTransactor) Promote(opts *bind.TransactOpts, user common.Address) (*types.Transaction, error) {
+	return _ReleaseOracle.contract.Transact(opts, "Promote", user)
+}
+
+// Promote is a paid mutator transaction binding the contract method 0x6195db9c.
+//
+// Solidity: function Promote(user address) returns()
+func (_ReleaseOracle *ReleaseOracleSession) Promote(user common.Address) (*types.Transaction, error) {
+	return _ReleaseOracle.Contract.Promote(&_ReleaseOracle.TransactOpts, user)
+}
+
+// Promote is a paid mutator transaction binding the contract method 0x6195db9c.
+//
+// Solidity: function Promote(user address) returns()
+func (_ReleaseOracle *ReleaseOracleTransactorSession) Promote(user common.Address) (*types.Transaction, error) {
+	return _ReleaseOracle.Contract.Promote(&_ReleaseOracle.TransactOpts, user)
+}
+
+// UpdateStatus is a paid mutator transaction binding the contract method 0x7444144b.
+//
+// Solidity: function updateStatus(user address, authorize bool) returns()
+func (_ReleaseOracle *ReleaseOracleTransactor) UpdateStatus(opts *bind.TransactOpts, user common.Address, authorize bool) (*types.Transaction, error) {
+	return _ReleaseOracle.contract.Transact(opts, "updateStatus", user, authorize)
+}
+
+// UpdateStatus is a paid mutator transaction binding the contract method 0x7444144b.
+//
+// Solidity: function updateStatus(user address, authorize bool) returns()
+func (_ReleaseOracle *ReleaseOracleSession) UpdateStatus(user common.Address, authorize bool) (*types.Transaction, error) {
+	return _ReleaseOracle.Contract.UpdateStatus(&_ReleaseOracle.TransactOpts, user, authorize)
+}
+
+// UpdateStatus is a paid mutator transaction binding the contract method 0x7444144b.
+//
+// Solidity: function updateStatus(user address, authorize bool) returns()
+func (_ReleaseOracle *ReleaseOracleTransactorSession) UpdateStatus(user common.Address, authorize bool) (*types.Transaction, error) {
+	return _ReleaseOracle.Contract.UpdateStatus(&_ReleaseOracle.TransactOpts, user, authorize)
+}

common/releases/contract.sol

@@ -14,32 +14,135 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
-// WARNING: WORK IN PROGRESS & UNTESTED
-// 
-// contract tracking versions added by designated signers.
-// designed to track versions of geth (go-ethereum) recommended by the
-// go-ethereum team. geth client interfaces with contract through ABI by simply
-// reading the full state and then deciding on recommended version based on
-// some logic (e.g. version date & number of signers).
-//
-// to keep things simple, the contract does not use FSM for multisig
-// but rather allows any designated signer to add a version or vote for an
-// existing version. this avoids need to track voting-in-progress states and
-// also provides history of all past versions.
-//
 
-contract Versions {
+// ReleaseOracle is an Ethereum contract to store the current and previous
-    struct V {
+// versions of the go-ethereum implementation. Its goal is to allow Geth to
-        bytes32 v;
+// check for new releases automatically without the need to consult a central
-        uint64 ts;
+// repository.
-        address[] signers;
+//
+// The contract takes a vote based approach on both assigning authorized signers
+// as well as signing off on new Geth releases.
+contract ReleaseOracle {
+  // Votes is an internal data structure to count votes on a specific proposal
+  struct Votes {
+    address[] pass; // List of signers voting to pass a proposal
+    address[] fail; // List of signers voting to fail a proposal
+  }
+
+  // Oracle authorization details
+  mapping(address => bool) authorized; // Set of accounts allowed to vote on updating the contract
+  address[]                signers;    // List of addresses currently accepted as signers
+
+  // Various proposals being voted on
+  mapping(address => Votes) authProps; // Currently running user authorization proposals
+  address[]                 authPend;  // List of addresses being voted on (map indexes)
+
+  // isSigner is a modifier to authorize contract transactions.
+  modifier isSigner() {
+    if (authorized[msg.sender]) {
+      _
     }
+  }
 
+  // Constructor to assign the creator as the sole valid signer.
+  function ReleaseOracle() {
+    authorized[msg.sender] = true;
+    signers.push(msg.sender);
+  }
+
+  // Signers is an accessor method to retrieve all te signers (public accessor
+  // generates an indexed one, not a retreive-all version).
+  function Signers() constant returns(address[]) {
+    return signers;
+  }
+
+  // AuthProposals retrieves the list of addresses that authorization proposals
+  // are currently being voted on.
+  function AuthProposals() constant returns(address[]) {
+    return authPend;
+  }
+
+  // AuthVotes retrieves the current authorization votes for a particular user
+  // to promote him into the list of signers, or demote him from there.
+  function AuthVotes(address user) constant returns(address[] promote, address[] demote) {
+    return (authProps[user].pass, authProps[user].fail);
+  }
+
+  // Promote pitches in on a voting campaign to promote a new user to a signer
+  // position.
+  function Promote(address user) {
+    updateStatus(user, true);
+  }
+
+  // Demote pitches in on a voting campaign to demote an authorized user from
+  // its signer position.
+  function Demote(address user) {
+    updateStatus(user, false);
+  }
+
+  // updateStatus marks a vote for changing the status of an Ethereum user,
+  // either for or against the user being an authorized signer.
+  function updateStatus(address user, bool authorize) isSigner {
+    // Gather the current votes and ensure we don't double vote
+    Votes votes = authProps[user];
+    for (uint i = 0; i < votes.pass.length; i++) {
+      if (votes.pass[i] == msg.sender) {
+        return;
+      }
+    }
+    for (i = 0; i < votes.fail.length; i++) {
+      if (votes.fail[i] == msg.sender) {
+        return;
+      }
+    }
+    // If no authorization proposal is open, add the user to the index for later lookups
+    if (votes.pass.length == 0 && votes.fail.length == 0) {
+      authPend.push(user);
+    }
+    // Cast the vote and return if the proposal cannot be resolved yet
+    if (authorize) {
+      votes.pass.push(msg.sender);
+      if (votes.pass.length <= signers.length / 2) {
+        return;
+      }
+    } else {
+      votes.fail.push(msg.sender);
+      if (votes.fail.length <= signers.length / 2) {
+        return;
+      }
+    }
+    // Proposal resolved in our favor, execute whatever we voted on
+    if (authorize && !authorized[user]) {
+      authorized[user] = true;
+      signers.push(user);
+    } else if (!authorize && authorized[user]) {
+      authorized[user] = false;
+
+      for (i = 0; i < signers.length; i++) {
+        if (signers[i] == user) {
+          signers[i] = signers[signers.length - 1];
+          signers.length--;
+          break;
+        }
+      }
+    }
+    // Finally delete the resolved proposal, index and garbage collect
+    delete authProps[user];
+
+    for (i = 0; i < authPend.length; i++) {
+      if (authPend[i] == user) {
+        authPend[i] = authPend[authPend.length - 1];
+        authPend.length--;
+        break;
+      }
+    }
+  }
+/*
     address[] public parties; // owners/signers
     address[] public deleteAcks; // votes to suicide contract
     uint public deleteAcksReq; // number of votes needed
     V[] public versions;
- 
+
     modifier canAccess(address addr) {
         bool access = false;
         for (uint i = 0; i < parties.length; i++) {
@@ -53,12 +156,12 @@ contract Versions {
         }
         _
     }
-	
+
 	function Versions(address[] addrs) {
         if (addrs.length < 2) {
             throw;
         }
-        
+
         parties = addrs;
         deleteAcksReq = (addrs.length / 2) + 1;
     }
@@ -93,7 +196,7 @@ contract Versions {
                 return;
             }
         }
-     
+
         // version is new, add it
         // due to dynamic array, push it first then set values
         V memory v;
@@ -104,7 +207,7 @@ contract Versions {
         versions[versions.length - 1].signers[0] = msg.sender;
         versions[versions.length - 1].ts = uint64(block.timestamp);
     }
-    
+
      // remove vote for a version, if present
     function NackVersion(bytes32 ver)
         canAccess(msg.sender)
@@ -119,7 +222,7 @@ contract Versions {
             }
         }
     }
-    
+
     // delete-this-contract vote, suicide if enough votes
     function AckDelete()
         canAccess(msg.sender)
@@ -134,7 +237,7 @@ contract Versions {
             suicide(msg.sender);
         }
     }
-    
+
     // remove sender's delete-this-contract vote, if present
     function NackDelete()
         canAccess(msg.sender)
@@ -148,5 +251,5 @@ contract Versions {
                 deleteAcks.length -= 1;
             }
         }
-    }
+    }*/
 }

common/releases/contract_test.go

@@ -0,0 +1,197 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package releases
+
+import (
+	"crypto/ecdsa"
+	"math/big"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/accounts/abi/bind"
+	"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/crypto"
+)
+
+// setupReleaseTest creates a blockchain simulator and deploys a version oracle
+// contract for testing.
+func setupReleaseTest(t *testing.T, prefund ...*ecdsa.PrivateKey) (*ecdsa.PrivateKey, *ReleaseOracle, *backends.SimulatedBackend) {
+	// Generate a new random account and a funded simulator
+	key, _ := crypto.GenerateKey()
+	auth := bind.NewKeyedTransactor(key)
+
+	accounts := []core.GenesisAccount{{Address: auth.From, Balance: big.NewInt(10000000000)}}
+	for _, key := range prefund {
+		accounts = append(accounts, core.GenesisAccount{Address: crypto.PubkeyToAddress(key.PublicKey), Balance: big.NewInt(10000000000)})
+	}
+	sim := backends.NewSimulatedBackend(accounts...)
+
+	// Deploy a version oracle contract, commit and return
+	_, _, oracle, err := DeployReleaseOracle(auth, sim)
+	if err != nil {
+		t.Fatalf("Failed to deploy version contract: %v", err)
+	}
+	sim.Commit()
+
+	return key, oracle, sim
+}
+
+// Tests that the version contract can be deployed and the creator is assigned
+// the sole authorized signer.
+func TestContractCreation(t *testing.T) {
+	key, oracle, _ := setupReleaseTest(t)
+
+	owner := crypto.PubkeyToAddress(key.PublicKey)
+	signers, err := oracle.Signers(nil)
+	if err != nil {
+		t.Fatalf("Failed to retrieve list of signers: %v", err)
+	}
+	if len(signers) != 1 || signers[0] != owner {
+		t.Fatalf("Initial signer mismatch: have %v, want %v", signers, owner)
+	}
+}
+
+// Tests that subsequent signers can be promoted, each requiring half plus one
+// votes for it to pass through.
+func TestSignerPromotion(t *testing.T) {
+	// Prefund a few accounts to authorize with and create the oracle
+	keys := make([]*ecdsa.PrivateKey, 5)
+	for i := 0; i < len(keys); i++ {
+		keys[i], _ = crypto.GenerateKey()
+	}
+	key, oracle, sim := setupReleaseTest(t, keys...)
+
+	// Gradually promote the keys, until all are authorized
+	keys = append([]*ecdsa.PrivateKey{key}, keys...)
+	for i := 1; i < len(keys); i++ {
+		// Check that no votes are accepted from the not yet authed user
+		if _, err := oracle.Promote(bind.NewKeyedTransactor(keys[i]), common.Address{}); err != nil {
+			t.Fatalf("Iter #%d: failed invalid promotion attempt: %v", i, err)
+		}
+		sim.Commit()
+
+		pend, err := oracle.AuthProposals(nil)
+		if err != nil {
+			t.Fatalf("Iter #%d: failed to retrieve active proposals: %v", i, err)
+		}
+		if len(pend) != 0 {
+			t.Fatalf("Iter #%d: proposal count mismatch: have %d, want 0", i, len(pend))
+		}
+		// Promote with half - 1 voters and check that the user's not yet authorized
+		for j := 0; j < i/2; j++ {
+			if _, err = oracle.Promote(bind.NewKeyedTransactor(keys[j]), crypto.PubkeyToAddress(keys[i].PublicKey)); err != nil {
+				t.Fatalf("Iter #%d: failed valid promotion attempt: %v", i, err)
+			}
+		}
+		sim.Commit()
+
+		signers, err := oracle.Signers(nil)
+		if err != nil {
+			t.Fatalf("Iter #%d: failed to retrieve list of signers: %v", i, err)
+		}
+		if len(signers) != i {
+			t.Fatalf("Iter #%d: signer count mismatch: have %v, want %v", i, len(signers), i)
+		}
+		// Promote with the last one needed to pass the promotion
+		if _, err = oracle.Promote(bind.NewKeyedTransactor(keys[i/2]), crypto.PubkeyToAddress(keys[i].PublicKey)); err != nil {
+			t.Fatalf("Iter #%d: failed valid promotion completion attempt: %v", i, err)
+		}
+		sim.Commit()
+
+		signers, err = oracle.Signers(nil)
+		if err != nil {
+			t.Fatalf("Iter #%d: failed to retrieve list of signers: %v", i, err)
+		}
+		if len(signers) != i+1 {
+			t.Fatalf("Iter #%d: signer count mismatch: have %v, want %v", i, len(signers), i+1)
+		}
+	}
+}
+
+// Tests that subsequent signers can be demoted, each requiring half plus one
+// votes for it to pass through.
+func TestSignerDemotion(t *testing.T) {
+	// Prefund a few accounts to authorize with and create the oracle
+	keys := make([]*ecdsa.PrivateKey, 5)
+	for i := 0; i < len(keys); i++ {
+		keys[i], _ = crypto.GenerateKey()
+	}
+	key, oracle, sim := setupReleaseTest(t, keys...)
+
+	// Authorize all the keys as valid signers and verify cardinality
+	keys = append([]*ecdsa.PrivateKey{key}, keys...)
+	for i := 1; i < len(keys); i++ {
+		for j := 0; j <= i/2; j++ {
+			if _, err := oracle.Promote(bind.NewKeyedTransactor(keys[j]), crypto.PubkeyToAddress(keys[i].PublicKey)); err != nil {
+				t.Fatalf("Iter #%d: failed valid promotion attempt: %v", i, err)
+			}
+		}
+		sim.Commit()
+	}
+	signers, err := oracle.Signers(nil)
+	if err != nil {
+		t.Fatalf("Failed to retrieve list of signers: %v", err)
+	}
+	if len(signers) != len(keys) {
+		t.Fatalf("Signer count mismatch: have %v, want %v", len(signers), len(keys))
+	}
+	// Gradually demote users until we run out of signers
+	for i := len(keys) - 1; i >= 0; i-- {
+		// Demote with half - 1 voters and check that the user's not yet dropped
+		for j := 0; j < (i+1)/2; j++ {
+			if _, err = oracle.Demote(bind.NewKeyedTransactor(keys[j]), crypto.PubkeyToAddress(keys[i].PublicKey)); err != nil {
+				t.Fatalf("Iter #%d: failed valid demotion attempt: %v", len(keys)-i, err)
+			}
+		}
+		sim.Commit()
+
+		signers, err := oracle.Signers(nil)
+		if err != nil {
+			t.Fatalf("Iter #%d: failed to retrieve list of signers: %v", len(keys)-i, err)
+		}
+		if len(signers) != i+1 {
+			t.Fatalf("Iter #%d: signer count mismatch: have %v, want %v", len(keys)-i, len(signers), i+1)
+		}
+		// Demote with the last one needed to pass the demotion
+		if _, err = oracle.Demote(bind.NewKeyedTransactor(keys[(i+1)/2]), crypto.PubkeyToAddress(keys[i].PublicKey)); err != nil {
+			t.Fatalf("Iter #%d: failed valid demotion completion attempt: %v", i, err)
+		}
+		sim.Commit()
+
+		signers, err = oracle.Signers(nil)
+		if err != nil {
+			t.Fatalf("Iter #%d: failed to retrieve list of signers: %v", len(keys)-i, err)
+		}
+		if len(signers) != i {
+			t.Fatalf("Iter #%d: signer count mismatch: have %v, want %v", len(keys)-i, len(signers), i)
+		}
+		// Check that no votes are accepted from the already demoted users
+		if _, err = oracle.Promote(bind.NewKeyedTransactor(keys[i]), common.Address{}); err != nil {
+			t.Fatalf("Iter #%d: failed invalid promotion attempt: %v", i, err)
+		}
+		sim.Commit()
+
+		pend, err := oracle.AuthProposals(nil)
+		if err != nil {
+			t.Fatalf("Iter #%d: failed to retrieve active proposals: %v", i, err)
+		}
+		if len(pend) != 0 {
+			t.Fatalf("Iter #%d: proposal count mismatch: have %d, want 0", i, len(pend))
+		}
+	}
+}

common/releases/generator.go

@@ -0,0 +1,19 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+//go:generate abigen --sol ./contract.sol --pkg releases --out ./contract.go
+
+package releases

common/releases/versions.go

@@ -14,8 +14,9 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
-package versions
+package releases
 
+/*
 import (
 	"fmt"
 	"math/big"
@@ -213,3 +214,4 @@ func (m callmsg) GasPrice() *big.Int            { return m.gasPrice }
 func (m callmsg) Gas() *big.Int                 { return m.gas }
 func (m callmsg) Value() *big.Int               { return m.value }
 func (m callmsg) Data() []byte                  { return m.data }
+*/