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-rw-r--r--contracts/release/contract.sol251
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diff --git a/contracts/release/contract.sol b/contracts/release/contract.sol
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-// 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/>.
-
-pragma solidity ^0.4.18;
-
-// ReleaseOracle is an Ethereum contract to store the current and previous
-// versions of the go-ethereum implementation. Its goal is to allow Geth to
-// check for new releases automatically without the need to consult a central
-// repository.
-//
-// The contract takes a vote based approach on both assigning authorised signers
-// as well as signing off on new Geth releases.
-//
-// Note, when a signer is demoted, the currently pending release is auto-nuked.
-// The reason is to prevent suprises where a demotion actually tilts the votes
-// in favor of one voter party and pushing out a new release as a consequence of
-// a simple demotion.
-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
- }
-
- // Version is the version details of a particular Geth release
- struct Version {
- uint32 major; // Major version component of the release
- uint32 minor; // Minor version component of the release
- uint32 patch; // Patch version component of the release
- bytes20 commit; // Git SHA1 commit hash of the release
-
- uint64 time; // Timestamp of the release approval
- Votes votes; // Votes that passed this release
- }
-
- // Oracle authorization details
- mapping(address => bool) authorised; // Set of accounts allowed to vote on updating the contract
- address[] voters; // 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)
-
- Version verProp; // Currently proposed release being voted on
- Version[] releases; // All the positively voted releases
-
- // isSigner is a modifier to authorize contract transactions.
- modifier isSigner() {
- if (authorised[msg.sender]) {
- _;
- }
- }
-
- // Constructor to assign the initial set of signers.
- function ReleaseOracle(address[] signers) {
- // If no signers were specified, assign the creator as the sole signer
- if (signers.length == 0) {
- authorised[msg.sender] = true;
- voters.push(msg.sender);
- return;
- }
- // Otherwise assign the individual signers one by one
- for (uint i = 0; i < signers.length; i++) {
- authorised[signers[i]] = true;
- voters.push(signers[i]);
- }
- }
-
- // signers is an accessor method to retrieve all the signers (public accessor
- // generates an indexed one, not a retrieve-all version).
- function signers() constant returns(address[]) {
- return voters;
- }
-
- // 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);
- }
-
- // currentVersion retrieves the semantic version, commit hash and release time
- // of the currently votec active release.
- function currentVersion() constant returns (uint32 major, uint32 minor, uint32 patch, bytes20 commit, uint time) {
- if (releases.length == 0) {
- return (0, 0, 0, 0, 0);
- }
- var release = releases[releases.length - 1];
-
- return (release.major, release.minor, release.patch, release.commit, release.time);
- }
-
- // proposedVersion retrieves the semantic version, commit hash and the current
- // votes for the next proposed release.
- function proposedVersion() constant returns (uint32 major, uint32 minor, uint32 patch, bytes20 commit, address[] pass, address[] fail) {
- return (verProp.major, verProp.minor, verProp.patch, verProp.commit, verProp.votes.pass, verProp.votes.fail);
- }
-
- // promote pitches in on a voting campaign to promote a new user to a signer
- // position.
- function promote(address user) {
- updateSigner(user, true);
- }
-
- // demote pitches in on a voting campaign to demote an authorised user from
- // its signer position.
- function demote(address user) {
- updateSigner(user, false);
- }
-
- // release votes for a particular version to be included as the next release.
- function release(uint32 major, uint32 minor, uint32 patch, bytes20 commit) {
- updateRelease(major, minor, patch, commit, true);
- }
-
- // nuke votes for the currently proposed version to not be included as the next
- // release. Nuking doesn't require a specific version number for simplicity.
- function nuke() {
- updateRelease(0, 0, 0, 0, false);
- }
-
- // updateSigner marks a vote for changing the status of an Ethereum user, either
- // for or against the user being an authorised signer.
- function updateSigner(address user, bool authorize) internal 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 <= voters.length / 2) {
- return;
- }
- } else {
- votes.fail.push(msg.sender);
- if (votes.fail.length <= voters.length / 2) {
- return;
- }
- }
- // Proposal resolved in our favor, execute whatever we voted on
- if (authorize && !authorised[user]) {
- authorised[user] = true;
- voters.push(user);
- } else if (!authorize && authorised[user]) {
- authorised[user] = false;
-
- for (i = 0; i < voters.length; i++) {
- if (voters[i] == user) {
- voters[i] = voters[voters.length - 1];
- voters.length--;
-
- delete verProp; // Nuke any version proposal (no surprise releases!)
- 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;
- }
- }
- }
-
- // updateRelease votes for a particular version to be included as the next release,
- // or for the currently proposed release to be nuked out.
- function updateRelease(uint32 major, uint32 minor, uint32 patch, bytes20 commit, bool release) internal isSigner {
- // Skip nuke votes if no proposal is pending
- if (!release && verProp.votes.pass.length == 0) {
- return;
- }
- // Mark a new release if no proposal is pending
- if (verProp.votes.pass.length == 0) {
- verProp.major = major;
- verProp.minor = minor;
- verProp.patch = patch;
- verProp.commit = commit;
- }
- // Make sure positive votes match the current proposal
- if (release && (verProp.major != major || verProp.minor != minor || verProp.patch != patch || verProp.commit != commit)) {
- return;
- }
- // Gather the current votes and ensure we don't double vote
- Votes votes = verProp.votes;
- 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;
- }
- }
- // Cast the vote and return if the proposal cannot be resolved yet
- if (release) {
- votes.pass.push(msg.sender);
- if (votes.pass.length <= voters.length / 2) {
- return;
- }
- } else {
- votes.fail.push(msg.sender);
- if (votes.fail.length <= voters.length / 2) {
- return;
- }
- }
- // Proposal resolved in our favor, execute whatever we voted on
- if (release) {
- verProp.time = uint64(now);
- releases.push(verProp);
- delete verProp;
- } else {
- delete verProp;
- }
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 00:27:17 +0800