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Allow checkpoints to work with all networks.

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Previously the main network checkpoints were being used for unrecognized
networks.  This commit changes the code so that no checkpoints are used in
that scenario.
This commit is contained in:
Dave Collins 2013-07-30 15:29:15 -05:00
parent 1e891b4e0b
commit 357160257c
1 changed files with 11 additions and 10 deletions
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21
checkpoints.go
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@ -60,8 +60,9 @@ var checkpointDataMainNet = checkpointData{
checkpointsByHeight: nil, // Automatically generated in init. checkpointsByHeight: nil, // Automatically generated in init.
} }
// checkpointDataTestNet contains checkpoint data for the test network. // checkpointDataTestNet3 contains checkpoint data for the test network (version
var checkpointDataTestNet = checkpointData{ // 3).
var checkpointDataTestNet3 = checkpointData{
checkpoints: []Checkpoint{ checkpoints: []Checkpoint{
{546, newShaHashFromStr("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70")}, {546, newShaHashFromStr("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70")},
}, },
@ -89,18 +90,18 @@ func (b *BlockChain) DisableCheckpoints(disable bool) {
func (b *BlockChain) checkpointData() *checkpointData { func (b *BlockChain) checkpointData() *checkpointData {
switch b.btcnet { switch b.btcnet {
case btcwire.TestNet3: case btcwire.TestNet3:
return &checkpointDataTestNet return &checkpointDataTestNet3
case btcwire.MainNet: case btcwire.MainNet:
fallthrough
default:
return &checkpointDataMainNet return &checkpointDataMainNet
} }
return nil
} }
// LatestCheckpoint returns the most recent checkpoint (regardless of whether it // LatestCheckpoint returns the most recent checkpoint (regardless of whether it
// is already known). When checkpoints are disabled it will return nil. // is already known). When checkpoints are disabled or there are no checkpoints
// for the active network, it will return nil.
func (b *BlockChain) LatestCheckpoint() *Checkpoint { func (b *BlockChain) LatestCheckpoint() *Checkpoint {
if b.noCheckpoints { if b.noCheckpoints || b.checkpointData() == nil {
return nil return nil
} }
@ -112,7 +113,7 @@ func (b *BlockChain) LatestCheckpoint() *Checkpoint {
// match the hard-coded checkpoint data. It also returns true if there is no // match the hard-coded checkpoint data. It also returns true if there is no
// checkpoint data for the passed block height. // checkpoint data for the passed block height.
func (b *BlockChain) verifyCheckpoint(height int64, hash *btcwire.ShaHash) bool { func (b *BlockChain) verifyCheckpoint(height int64, hash *btcwire.ShaHash) bool {
if b.noCheckpoints { if b.noCheckpoints || b.checkpointData() == nil {
return true return true
} }
@ -130,7 +131,7 @@ func (b *BlockChain) verifyCheckpoint(height int64, hash *btcwire.ShaHash) bool
// associated block. It returns nil if a checkpoint can't be found (this should // associated block. It returns nil if a checkpoint can't be found (this should
// really only happen for blocks before the first checkpoint). // really only happen for blocks before the first checkpoint).
func (b *BlockChain) findLatestKnownCheckpoint() (*btcutil.Block, error) { func (b *BlockChain) findLatestKnownCheckpoint() (*btcutil.Block, error) {
if b.noCheckpoints { if b.noCheckpoints || b.checkpointData() == nil {
return nil, nil return nil, nil
} }
@ -248,7 +249,7 @@ func init() {
// when the package loads. // when the package loads.
checkpointInitializeList := []*checkpointData{ checkpointInitializeList := []*checkpointData{
&checkpointDataMainNet, &checkpointDataMainNet,
&checkpointDataTestNet, &checkpointDataTestNet3,
} }
for _, data := range checkpointInitializeList { for _, data := range checkpointInitializeList {
data.checkpointsByHeight = make(map[int64]*Checkpoint) data.checkpointsByHeight = make(map[int64]*Checkpoint)