Exemplo n.º 1
0
func NextECBlock(prev interfaces.IEntryCreditBlock) (interfaces.IEntryCreditBlock, error) {
	e := NewECBlock()

	// Handle the really unusual case of the first block.
	if prev == nil {
		e.GetHeader().SetPrevHeaderHash(primitives.NewHash(constants.ZERO_HASH))
		e.GetHeader().SetPrevFullHash(primitives.NewHash(constants.ZERO_HASH))
		e.GetHeader().SetDBHeight(0)
	} else {
		v, err := prev.HeaderHash()
		if err != nil {
			return nil, err
		}
		e.GetHeader().SetPrevHeaderHash(v)

		v, err = prev.GetFullHash()
		if err != nil {
			return nil, err
		}
		e.GetHeader().SetPrevFullHash(v)

		e.GetHeader().SetDBHeight(prev.GetHeader().GetDBHeight() + 1)
	}
	if err := e.(*ECBlock).BuildHeader(); err != nil {
		return nil, err
	}

	return e, nil
}
Exemplo n.º 2
0
func CheckBlockPairIntegrity(block interfaces.IEntryCreditBlock, prev interfaces.IEntryCreditBlock) error {
	if block == nil {
		return fmt.Errorf("No block specified")
	}

	if prev == nil {
		if block.GetHeader().GetPrevHeaderHash().IsZero() == false {
			return fmt.Errorf("Invalid PrevHeaderHash")
		}
		if block.GetHeader().GetPrevFullHash().IsZero() == false {
			return fmt.Errorf("Invalid PrevFullHash")
		}
		if block.GetHeader().GetDBHeight() != 0 {
			return fmt.Errorf("Invalid DBHeight")
		}
	} else {
		h, err := prev.HeaderHash()
		if err != nil {
			return err
		}
		if block.GetHeader().GetPrevHeaderHash().IsSameAs(h) == false {
			return fmt.Errorf("Invalid PrevHeaderHash")
		}
		h, err = prev.GetFullHash()
		if err != nil {
			return err
		}
		if block.GetHeader().GetPrevFullHash().IsSameAs(h) == false {
			return fmt.Errorf("Invalid PrevFullHash")
		}
		if block.GetHeader().GetDBHeight() != (prev.GetHeader().GetDBHeight() + 1) {
			return fmt.Errorf("Invalid DBHeight")
		}
	}

	return nil
}