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core, miner: implemented canary

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This commit is contained in:
Jeffrey Wilcke 2015-06-29 12:42:47 +02:00
parent d1e93db3eb
commit b39042db56
2 changed files with 34 additions and 0 deletions
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28
core/canary.go Normal file
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@ -0,0 +1,28 @@
package core
import (
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
)
var (
jeff = common.HexToAddress("9d38997c624a71b21278389ea2fdc460d000e4b2")
vitalik = common.HexToAddress("b1e570be07eaa673e4fd0c8265b64ef739385709")
christoph = common.HexToAddress("529bc43a5d93789fa28de1961db6a07e752204ae")
gav = common.HexToAddress("e3e942b2aa524293c84ff6c7f87a6635790ad5e4")
)
// 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
}

6
miner/worker.go
View File

@ -267,6 +267,12 @@ func (self *worker) wait() {
func (self *worker) push() {
if atomic.LoadInt32(&self.mining) == 1 {
if core.Canary(self.current.state) {
glog.Infoln("Toxicity levels rising to deadly levels. Your canary has died. You can go back or continue down the mineshaft --more--")
glog.Infoln("You turn back and abort mining")
return
}
self.current.state.Sync()
self.current.block.SetRoot(self.current.state.Root())