package core import ( "math/big" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core/state" ) var ( jeff = common.HexToAddress("a8edb1ac2c86d3d9d78f96cd18001f60df29e52c") vitalik = common.HexToAddress("1baf27b88c48dd02b744999cf3522766929d2b2a") christoph = common.HexToAddress("60d11b58744784dc97f878f7e3749c0f1381a004") gav = common.HexToAddress("4bb7e8ae99b645c2b7860b8f3a2328aae28bd80a") ) // Canary will check the 0'd address of the 4 contracts above. // If two or more are set to anything other than a 0 the canary // dies a horrible death. func Canary(statedb *state.StateDB) bool { r := new(big.Int) r.Add(r, statedb.GetState(jeff, common.Hash{}).Big()) r.Add(r, statedb.GetState(vitalik, common.Hash{}).Big()) r.Add(r, statedb.GetState(christoph, common.Hash{}).Big()) r.Add(r, statedb.GetState(gav, common.Hash{}).Big()) return r.Cmp(big.NewInt(1)) > 0 }