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cmd/geth: check block range against chain head in export cmd (#22387)

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Check the input parameters against the actual head block, exit on error
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Sina Mahmoodi 2021-03-22 19:11:10 +01:00 committed by GitHub
parent 0c70b83e00
commit 8d6cc16742
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1 changed files with 3 additions and 0 deletions
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3
cmd/geth/chaincmd.go
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@ -322,6 +322,9 @@ func exportChain(ctx *cli.Context) error {
if first < 0 || last < 0 {
utils.Fatalf("Export error: block number must be greater than 0\n")
}
if head := chain.CurrentFastBlock(); uint64(last) > head.NumberU64() {
utils.Fatalf("Export error: block number %d larger than head block %d\n", uint64(last), head.NumberU64())
}
err = utils.ExportAppendChain(chain, fp, uint64(first), uint64(last))
}