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@alexvandesande
Forked from anonymous/advanced token.sol
Created August 28, 2017 19:47
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Created using browser-solidity: Realtime Ethereum Contract Compiler and Runtime. Load this file by pasting this gists URL or ID at https://ethereum.github.io/browser-solidity/#version=soljson-v0.4.16+commit.d7661dd9.js&optimize=undefined&gist=
pragma solidity ^0.4.2;
contract owned {
address public owner;
function owned() {
owner = msg.sender;
}
modifier onlyOwner {
require (msg.sender == owner);
_;
}
function transferOwnership(address newOwner) onlyOwner {
owner = newOwner;
}
}
contract tokenRecipient {
event receivedEther(address sender, uint amount);
event receivedTokens(address _from, uint256 _value, address _token, bytes _extraData);
function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData){
Token t = Token(_token);
require (!t.transferFrom(_from, this, _value));
receivedTokens(_from, _value, _token, _extraData);
}
function () payable {
receivedEther(msg.sender, msg.value);
}
}
contract Token {
function transferFrom(address _from, address _to, uint256 _value) returns (bool success);
}
contract Congress is owned, tokenRecipient {
/* Contract Variables and events */
uint public minimumQuorum;
uint public debatingPeriodInMinutes;
int public majorityMargin;
Proposal[] public proposals;
uint public numProposals;
mapping (address => uint) public memberId;
Member[] public members;
event ProposalAdded(uint proposalID, address recipient, uint amount, string description);
event Voted(uint proposalID, bool position, address voter, string justification);
event ProposalTallied(uint proposalID, int result, uint quorum, bool active);
event MembershipChanged(address member, bool isMember);
event ChangeOfRules(uint newMinimumQuorum, uint newDebatingPeriodInMinutes, int newMajorityMargin);
struct Proposal {
address recipient;
uint amount;
string description;
uint votingDeadline;
bool computed;
bool approved;
uint numberOfVotes;
int currentResult;
bytes32 proposalHash;
Vote[] votes;
mapping (address => bool) voted;
}
struct Member {
address member;
string name;
uint memberSince;
}
struct Vote {
bool inSupport;
address voter;
string justification;
}
/* modifier that allows only shareholders to vote and create new proposals */
modifier onlyMembers {
require (memberId[msg.sender] != 0);
_;
}
/* First time setup */
function Congress () payable {
changeVotingRules(0, 3, 0);
// It’s necessary to add an empty first member
addMember(0, "");
// and let's add the founder, to save a step later
addMember(owner, 'founder');
}
/// @notice Make `targetMember` a member named `memberName`
/// @param targetMember ethereum address to be added
/// @param memberName public name for that member
function addMember(address targetMember, string memberName) {
uint id = memberId[targetMember];
if (id == 0) {
memberId[targetMember] = members.length;
id = members.length++;
}
members[id] = Member({member: targetMember, memberSince: now, name: memberName});
MembershipChanged(targetMember, true);
}
/// @notice Remove membership from `targetMember`
/// @param targetMember ethereum address to be removed
function removeMember(address targetMember) onlyOwner {
require(memberId[targetMember] != 0);
for (uint i = memberId[targetMember]; i<members.length-1; i++){
members[i] = members[i+1];
}
delete members[members.length-1];
members.length--;
}
/// @notice Make so that proposals need tobe discussed for at least `minutesForDebate/60` hours, have at least `minimumQuorumForProposals` votes, and have 50% + `marginOfVotesForMajority` votes to be executed
/// @param minimumQuorumForProposals how many members must vote on a proposal for it to be executed
/// @param minutesForDebate the minimum amount of delay between when a proposal is made and when it can be executed
/// @param marginOfVotesForMajority the proposal needs to have 50% plus this number
function changeVotingRules(
uint minimumQuorumForProposals,
uint minutesForDebate,
int marginOfVotesForMajority
) onlyOwner {
minimumQuorum = minimumQuorumForProposals;
debatingPeriodInMinutes = minutesForDebate;
majorityMargin = marginOfVotesForMajority;
ChangeOfRules(minimumQuorum, debatingPeriodInMinutes, majorityMargin);
}
/// @notice Propose to send `weiAmount / 1E18` ether to `beneficiary` for `JobDescription`. `transactionBytecode ? Contains : Does not contain` code.
/// @param beneficiary who to send the ether to
/// @param weiAmount amount of ether to send, in wei
/// @param JobDescription Description of job
/// @param transactionBytecode bytecode of transaction
function newProposal(
address beneficiary,
uint weiAmount,
string JobDescription,
bytes transactionBytecode
)
onlyMembers
returns (uint proposalID)
{
proposalID = proposals.length++;
Proposal storage p = proposals[proposalID];
p.recipient = beneficiary;
p.amount = weiAmount;
p.description = JobDescription;
p.votingDeadline = now + debatingPeriodInMinutes * 1 minutes;
p.proposalHash = sha3(beneficiary, weiAmount, p.votingDeadline, transactionBytecode);
p.computed = false;
p.approved = false;
p.numberOfVotes = 0;
ProposalAdded(proposalID, beneficiary, weiAmount, JobDescription);
numProposals = proposalID+1;
return proposalID;
}
/// @notice Propose to send `etherAmount` ether to `beneficiary` for `JobDescription`. `transactionBytecode ? Contains : Does not contain` code.
/// @param beneficiary who to send the ether to
/// @param etherAmount amount of ether to send
/// @param JobDescription Description of job
/// @param transactionBytecode bytecode of transaction
function newProposalInEther(
address beneficiary,
uint etherAmount,
string JobDescription,
bytes transactionBytecode
)
onlyMembers
returns (uint proposalID)
{
return newProposal(beneficiary, etherAmount * 1 ether, JobDescription, transactionBytecode);
}
/* function to check if a proposal code matches */
function checkProposalCode(
uint proposalNumber,
bytes transactionBytecode
)
constant
returns (bool codeChecksOut)
{
Proposal storage p = proposals[proposalNumber];
return p.proposalHash == sha3(p.recipient, p.amount, p.votingDeadline, transactionBytecode);
}
/// @notice Vote `supportsProposal? in support of : against` proposal #`proposalNumber`
/// @param proposalNumber number of proposal
/// @param supportsProposal either in favor or against it
/// @param justificationText optional justification text
function vote(
uint proposalNumber,
bool supportsProposal,
string justificationText
)
returns (uint voteID)
{
Proposal storage p = proposals[proposalNumber]; // Get the proposal
require(!p.voted[msg.sender]); // If has already voted, cancel
p.voted[msg.sender] = true; // Set this voter as having voted
p.numberOfVotes++; // Increase the number of votes
if (supportsProposal) { // If they support the proposal
p.currentResult++; // Increase score
} else { // If they don't
p.currentResult--; // Decrease the score
}
// Create a log of this event
Voted(proposalNumber, supportsProposal, msg.sender, justificationText);
return p.numberOfVotes;
}
/// @notice Count the votes proposal #`proposalNumber` and execute it if approved
/// @param proposalNumber proposal number
/// @param transactionBytecode optional: if the transaction contained a bytecode, you need to send it
function executeProposal(uint proposalNumber, bytes transactionBytecode) {
Proposal storage p = proposals[proposalNumber];
/* Check if the proposal can be executed:
- Has the voting deadline arrived?
- Has it been already executed or is it being executed?
- Does the transaction code match the proposal?
- Has a minimum quorum?
*/
require (now > p.votingDeadline
&& !p.computed
&& checkProposalCode(proposalNumber, transactionBytecode)
&& p.numberOfVotes >= minimumQuorum);
/* execute result */
/* If difference between support and opposition is larger than margin */
if (p.currentResult > majorityMargin) {
// Avoid recursive calling
p.approved = true;
if(p.recipient.call.value(p.amount)(transactionBytecode)){
p.computed = true;
}
} else {
p.computed = true;
p.approved = false;
}
// Fire Events
ProposalTallied(proposalNumber, p.currentResult, p.numberOfVotes, p.approved);
}
}
@12Thee
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12Thee commented Aug 9, 2024

I am the owner

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