The earliest surviving Etheria block definition store, with a self locking initializer
Context
Frontier era deployment by Cyrus Adkisson, the author of Etheria.
Key Facts
Description
Holds block shapes as int8[3][8] occupies and int8[3][] attachesto for 20 block types. Each init function marks its index in a uint8[32] done array, scans all 32 entries, and sets its lock only once none is still zero, so the store seals itself when the last block type has been written. initOccupies contains a bare expression statement, occupiesdone[which];, where the assignment was meant to be, so the occupies lock can never engage. Cyrus Adkisson redeployed with the assignment in place the following day.
Source Verified
Heuristic Analysis
The following characteristics were detected through bytecode analysis and may not be accurate.
Frontier Era
The initial release of Ethereum. A bare-bones implementation for technical users.
Bytecode Overview
Verified Source Available
Source verified through compiler archaeology and exact bytecode matching.
View Verification ProofShow source code (Solidity)
// Submitted by EthereumHistory (ethereumhistory.com)
contract BlockDefStorage
{
uint8[32] occupiesdone;
uint8[32] attachestodone;
bool occupieslocked;
bool attachestolocked;
Block[20] blocks;
struct Block
{
int8[3][8] occupies;
int8[3][] attachesto;
}
function getOccupies(uint8 which) public constant returns (int8[3][8])
{
return blocks[which].occupies;
}
function getAttachesto(uint8 which) public constant returns (int8[3][])
{
return blocks[which].attachesto;
}
function initOccupies(uint8 which, int8[3][8] occupies) public
{
if(occupieslocked)
return;
blocks[which].occupies = occupies;
occupiesdone[which];
for(uint8 i = 0; i < 32; i++)
{
if(occupiesdone[i] == 0)
return;
}
occupieslocked = true;
}
function initAttachesto(uint8 which, int8[3][] attachesto) public
{
if(attachestolocked)
return;
blocks[which].attachesto.length = attachesto.length;
blocks[which].attachesto = attachesto;
attachestodone[which] = 1;
for(uint8 i2 = 0; i2 < 32; i2++)
{
if(attachestodone[i2] == 0)
return;
}
attachestolocked = true;
}
}External Links
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