light/validator.go


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package light

import (
    "github.com/dexon-foundation/dexon/common"
    "github.com/dexon-foundation/dexon/consensus"
    "github.com/dexon-foundation/dexon/log"
)

type HeaderValidator struct {
    chain *LightChain
}

func (v *HeaderValidator) ValidateWitnessData(height uint64, blockHash common.Hash) error {
    b := v.chain.GetHeaderByNumber(height)
    if b == nil {
        log.Error("can not find block %v either pending or confirmed block", height)
        return consensus.ErrWitnessMismatch
    }

    if b.Hash() != blockHash {
        log.Error("invalid witness block %s vs %s",
            b.Hash().String(), blockHash.String())
        return consensus.ErrWitnessMismatch
    }
    return nil
}