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[NOD-1389] Add panic on NumParentBlocks if number of parents is greater than 255 (#928)
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@ -6,10 +6,11 @@ package appmessage
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import (
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import (
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"fmt"
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"fmt"
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"io"
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"github.com/kaspanet/kaspad/util/daghash"
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"github.com/kaspanet/kaspad/util/daghash"
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"github.com/kaspanet/kaspad/util/mstime"
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"github.com/kaspanet/kaspad/util/mstime"
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"github.com/pkg/errors"
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"io"
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"math"
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)
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)
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// BaseBlockHeaderPayload is the base number of bytes a block header can be,
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// BaseBlockHeaderPayload is the base number of bytes a block header can be,
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@ -60,7 +61,11 @@ type BlockHeader struct {
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// NumParentBlocks return the number of entries in ParentHashes
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// NumParentBlocks return the number of entries in ParentHashes
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func (h *BlockHeader) NumParentBlocks() byte {
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func (h *BlockHeader) NumParentBlocks() byte {
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return byte(len(h.ParentHashes))
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numParents := len(h.ParentHashes)
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if numParents > math.MaxUint8 {
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panic(errors.Errorf("number of parents is %d, which is more than one byte can fit", numParents))
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}
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return byte(numParents)
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}
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}
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// BlockHash computes the block identifier hash for the given block header.
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// BlockHash computes the block identifier hash for the given block header.
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