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refactor response compressed index validation into its own function

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This commit is contained in:
vyzo 2020-09-21 18:33:31 +03:00
parent f135ec8468
commit 58a85f378c
1 changed files with 39 additions and 25 deletions
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64
chain/exchange/client.go
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@ -210,31 +210,9 @@ func (c *client) processResponse(req *Request, res *Response) (*validatedRespons
// If the headers were also returned check that the compression
// indexes are valid before `toFullTipSets()` is called by the
// consumer.
for tipsetIdx := 0; tipsetIdx < resLength; tipsetIdx++ {
msgs := res.Chain[tipsetIdx].Messages
blocksNum := len(res.Chain[tipsetIdx].Blocks)
if len(msgs.BlsIncludes) != blocksNum {
return nil, xerrors.Errorf("BlsIncludes (%d) does not match number of blocks (%d)",
len(msgs.BlsIncludes), blocksNum)
}
if len(msgs.SecpkIncludes) != blocksNum {
return nil, xerrors.Errorf("SecpkIncludes (%d) does not match number of blocks (%d)",
len(msgs.SecpkIncludes), blocksNum)
}
for blockIdx := 0; blockIdx < blocksNum; blockIdx++ {
for _, mi := range msgs.BlsIncludes[blockIdx] {
if int(mi) >= len(msgs.Bls) {
return nil, xerrors.Errorf("index in BlsIncludes (%d) exceeds number of messages (%d)",
mi, len(msgs.Bls))
}
}
for _, mi := range msgs.SecpkIncludes[blockIdx] {
if int(mi) >= len(msgs.Secpk) {
return nil, xerrors.Errorf("index in SecpkIncludes (%d) exceeds number of messages (%d)",
mi, len(msgs.Secpk))
}
}
}
err := c.validateCompressedIndices(res.Chain)
if err != nil {
return nil, err
}
}
}
@ -242,6 +220,42 @@ func (c *client) processResponse(req *Request, res *Response) (*validatedRespons
return validRes, nil
}
func (c *client) validateCompressedIndices(chain []*BSTipSet) error {
resLength := len(chain)
for tipsetIdx := 0; tipsetIdx < resLength; tipsetIdx++ {
msgs := chain[tipsetIdx].Messages
blocksNum := len(chain[tipsetIdx].Blocks)
if len(msgs.BlsIncludes) != blocksNum {
return xerrors.Errorf("BlsIncludes (%d) does not match number of blocks (%d)",
len(msgs.BlsIncludes), blocksNum)
}
if len(msgs.SecpkIncludes) != blocksNum {
return xerrors.Errorf("SecpkIncludes (%d) does not match number of blocks (%d)",
len(msgs.SecpkIncludes), blocksNum)
}
for blockIdx := 0; blockIdx < blocksNum; blockIdx++ {
for _, mi := range msgs.BlsIncludes[blockIdx] {
if int(mi) >= len(msgs.Bls) {
return xerrors.Errorf("index in BlsIncludes (%d) exceeds number of messages (%d)",
mi, len(msgs.Bls))
}
}
for _, mi := range msgs.SecpkIncludes[blockIdx] {
if int(mi) >= len(msgs.Secpk) {
return xerrors.Errorf("index in SecpkIncludes (%d) exceeds number of messages (%d)",
mi, len(msgs.Secpk))
}
}
}
}
return nil
}
// GetBlocks implements Client.GetBlocks(). Refer to the godocs there.
func (c *client) GetBlocks(ctx context.Context, tsk types.TipSetKey, count int) ([]*types.TipSet, error) {
ctx, span := trace.StartSpan(ctx, "bsync.GetBlocks")