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parser: Correctly parse heights from script-encoded int64 values

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This commit is contained in:
Jack Grigg
2019-05-04 11:37:00 +01:00
committed by George Tankersley
parent 4794bca46e
commit 5acfb9af34
2 changed files with 48 additions and 10 deletions
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14
parser/block.go
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@@ -62,21 +62,15 @@ func (b *block) GetHeight() int {
return b.height
}
coinbaseScript := bytestring.String(b.vtx[0].transparentInputs[0].ScriptSig)
var heightByte byte
if ok := coinbaseScript.ReadByte(&heightByte); !ok {
var heightNum int64
if ok := coinbaseScript.ReadScriptInt64(&heightNum); !ok {
return -1
}
heightLen := int(heightByte)
var heightBytes = make([]byte, heightLen)
if ok := coinbaseScript.ReadBytes(&heightBytes, heightLen); !ok {
if heightNum < 0 {
return -1
}
// uint32 should last us a while (Nov 2018)
var blockHeight uint32
for i := heightLen - 1; i >= 0; i-- {
blockHeight <<= 8
blockHeight = blockHeight | uint32(heightBytes[i])
}
blockHeight := uint32(heightNum)
if blockHeight == genesisTargetDifficulty {
blockHeight = 0