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48 lines
1.1 KiB
48 lines
1.1 KiB
package proxy
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import (
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"bytes"
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"errors"
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"github.com/tendermint/tendermint/types"
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)
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func ValidateBlockMeta(meta *types.BlockMeta, sh types.SignedHeader) error {
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if meta == nil {
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return errors.New("expecting a non-nil BlockMeta")
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}
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// TODO: check the BlockID??
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return ValidateHeader(&meta.Header, sh)
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}
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func ValidateBlock(meta *types.Block, sh types.SignedHeader) error {
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if meta == nil {
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return errors.New("expecting a non-nil Block")
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}
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err := ValidateHeader(&meta.Header, sh)
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if err != nil {
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return err
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}
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if !bytes.Equal(meta.Data.Hash(), meta.Header.DataHash) {
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return errors.New("data hash doesn't match header")
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}
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return nil
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}
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func ValidateHeader(head *types.Header, sh types.SignedHeader) error {
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if head == nil {
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return errors.New("expecting a non-nil Header")
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}
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if sh.Header == nil {
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return errors.New("unexpected empty SignedHeader")
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}
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// Make sure they are for the same height (obvious fail).
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if head.Height != sh.Height {
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return errors.New("header heights mismatched")
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}
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// Check if they are equal by using hashes.
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if !bytes.Equal(head.Hash(), sh.Hash()) {
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return errors.New("headers don't match")
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}
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return nil
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}
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