44 lines
1.6 KiB
Go
44 lines
1.6 KiB
Go
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// Copyright 2017 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 misc
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import (
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"fmt"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/params"
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)
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// VerifyForkHashes verifies that blocks conforming to network hard-forks do have
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// the correct hashes, to avoid clients going off on different chains. This is an
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// optional feature.
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func VerifyForkHashes(config *params.ChainConfig, header *types.Header, uncle bool) error {
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// We don't care about uncles
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if uncle {
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return nil
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}
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// If the homestead reprice hash is set, validate it
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if config.EIP150Block != nil && config.EIP150Block.Cmp(header.Number) == 0 {
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if config.EIP150Hash != (common.Hash{}) && config.EIP150Hash != header.Hash() {
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return fmt.Errorf("homestead gas reprice fork: have 0x%x, want 0x%x", header.Hash(), config.EIP150Hash)
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}
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}
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// All ok, return
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return nil
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}
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