52 lines
1.8 KiB
Go
52 lines
1.8 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package core
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import (
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/state"
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)
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var (
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jeff = common.HexToAddress("a8edb1ac2c86d3d9d78f96cd18001f60df29e52c")
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vitalik = common.HexToAddress("1baf27b88c48dd02b744999cf3522766929d2b2a")
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christoph = common.HexToAddress("60d11b58744784dc97f878f7e3749c0f1381a004")
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gav = common.HexToAddress("4bb7e8ae99b645c2b7860b8f3a2328aae28bd80a")
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)
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// Canary will check the 0'd address of the 4 contracts above.
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// If two or more are set to anything other than a 0 the canary
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// dies a horrible death.
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func Canary(statedb *state.StateDB) bool {
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var r int
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if (statedb.GetState(jeff, common.Hash{}).Big().Cmp(big.NewInt(0)) > 0) {
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r++
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}
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if (statedb.GetState(gav, common.Hash{}).Big().Cmp(big.NewInt(0)) > 0) {
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r++
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}
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if (statedb.GetState(christoph, common.Hash{}).Big().Cmp(big.NewInt(0)) > 0) {
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r++
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}
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if (statedb.GetState(vitalik, common.Hash{}).Big().Cmp(big.NewInt(0)) > 0) {
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r++
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}
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return r > 1
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}
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