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les, light: remove untrusted header retrieval in ODR (#21907)

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* les, light: remove untrusted header retrieval in ODR

* les: polish

* light: check the hash equality in odr
This commit is contained in:
gary rong
2020-12-10 21:33:52 +08:00
committed by GitHub
parent 817a3fb562
commit 9f6bb492bb
9 changed files with 125 additions and 82 deletions
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22
les/odr.go
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@ -24,7 +24,6 @@ import (
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/light"
"github.com/ethereum/go-ethereum/log"
)
// LesOdr implements light.OdrBackend
@ -83,7 +82,8 @@ func (odr *LesOdr) IndexerConfig() *light.IndexerConfig {
}
const (
MsgBlockBodies = iota
MsgBlockHeaders = iota
MsgBlockBodies
MsgCode
MsgReceipts
MsgProofsV2
@ -122,13 +122,17 @@ func (odr *LesOdr) Retrieve(ctx context.Context, req light.OdrRequest) (err erro
return func() { lreq.Request(reqID, p) }
},
}
sent := mclock.Now()
if err = odr.retriever.retrieve(ctx, reqID, rq, func(p distPeer, msg *Msg) error { return lreq.Validate(odr.db, msg) }, odr.stop); err == nil {
// retrieved from network, store in db
req.StoreResult(odr.db)
defer func(sent mclock.AbsTime) {
if err != nil {
return
}
requestRTT.Update(time.Duration(mclock.Now() - sent))
} else {
log.Debug("Failed to retrieve data from network", "err", err)
}(mclock.Now())
if err := odr.retriever.retrieve(ctx, reqID, rq, func(p distPeer, msg *Msg) error { return lreq.Validate(odr.db, msg) }, odr.stop); err != nil {
return err
}
return
req.StoreResult(odr.db)
return nil
}