fix proof

Author: Hitenjain14

code/go/0chain.net/blobbercore/challenge/protocol.go

@@ -21,6 +21,7 @@ import (
 	"github.com/0chain/blobber/code/go/0chain.net/core/logging"
 	"github.com/0chain/blobber/code/go/0chain.net/core/transaction"
 	"github.com/0chain/blobber/code/go/0chain.net/core/util"
+	"github.com/0chain/common/core/util/wmpt"
 	sdkUtil "github.com/0chain/gosdk/core/util"
 	"github.com/remeh/sizedwaitgroup"
 	"gorm.io/gorm"
@@ -339,21 +340,22 @@ func (cr *ChallengeEntity) SaveChallengeResult(ctx context.Context, t *transacti
 
 func (cr *ChallengeEntity) getPostDataV2(ctx context.Context, allocationObj *allocation.Allocation) (map[string]any, error) {
 	trie := allocationObj.GetTrie()
+	copyTrie := wmpt.New(trie.CopyRoot(filestore.COLLAPSE_DEPTH), datastore.GetBlockStore())
+
 	var (
 		blockNum     = int64(0)
 		postData     = make(map[string]interface{})
 		ref          *reference.Ref
 		objectSize   int64
 		proofGenTime int64 = -1
 	)
-	if trie.Weight() > 0 {
+	if copyTrie.Weight() > 0 {
 		r := rand.New(rand.NewSource(cr.RandomNumber))
-		blockNum = r.Int63n(int64(trie.Weight()))
+		blockNum = r.Int63n(int64(copyTrie.Weight()))
 		blockNum++
 		cr.BlockNum = blockNum
-
 		logging.Logger.Info("[challenge]rand: ", zap.Uint64("trie.NumBlocks", trie.Weight()), zap.Any("blockNum", blockNum), zap.Any("challenge_id", cr.ChallengeID), zap.Any("random_seed", cr.RandomNumber))
-		key, objectProof, err := trie.GetBlockProof(uint64(blockNum))
+		key, objectProof, err := copyTrie.GetBlockProof(uint64(blockNum))
 		if err != nil {
 			return nil, err
 		}
@@ -367,6 +369,12 @@ func (cr *ChallengeEntity) getPostDataV2(ctx context.Context, allocationObj *all
 		}
 		cr.RefID = ref.ID
 		postData["object_proof"] = objectProof
+		fileMetaRootBytes := copyTrie.Root()
+		fileMetaRoot := hex.EncodeToString(fileMetaRootBytes)
+		if fileMetaRoot != allocationObj.FileMetaRoot {
+			logging.Logger.Error("root_mismatch", zap.Any("file_meta_root", allocationObj.FileMetaRoot), zap.Any("file_meta_root", fileMetaRoot))
+			return nil, common.NewError("root_mismatch", "File meta root mismatch")
+		}
 	}
 	cr.RespondedAllocationRoot = allocationObj.AllocationRoot
 	if blockNum > 0 {

go.mod

@@ -99,7 +99,7 @@ require (
 )
 
 require (
-	github.com/0chain/common v1.13.1-0.20240926135437-61b88d39bbbd
+	github.com/0chain/common v1.13.1-0.20241001175315-40440b0c9713
 	github.com/Luzifer/go-openssl/v3 v3.1.0 // indirect
 	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 // indirect
 	github.com/btcsuite/btcd v0.23.4 // indirect

go.sum

@@ -36,8 +36,8 @@ cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RX
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
 cloud.google.com/go/storage v1.14.0/go.mod h1:GrKmX003DSIwi9o29oFT7YDnHYwZoctc3fOKtUw0Xmo=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
-github.com/0chain/common v1.13.1-0.20240926135437-61b88d39bbbd h1:PDnzyJJA4rF2LBW+0OQJ5y9vIwsPYYjbbFwImvgiDdY=
-github.com/0chain/common v1.13.1-0.20240926135437-61b88d39bbbd/go.mod h1:vHK9Q0/nz28PxmKsLSMLzEs5iK6QVgl1LxdDQdR7y6s=
+github.com/0chain/common v1.13.1-0.20241001175315-40440b0c9713 h1:Syx2RVTEQYC94TRVRqrnb6mrqdXzgG9ipexLKyGs/0w=
+github.com/0chain/common v1.13.1-0.20241001175315-40440b0c9713/go.mod h1:vHK9Q0/nz28PxmKsLSMLzEs5iK6QVgl1LxdDQdR7y6s=
 github.com/0chain/errors v1.0.3 h1:QQZPFxTfnMcRdt32DXbzRQIfGWmBsKoEdszKQDb0rRM=
 github.com/0chain/errors v1.0.3/go.mod h1:xymD6nVgrbgttWwkpSCfLLEJbFO6iHGQwk/yeSuYkIc=
 github.com/0chain/gosdk v1.17.0-RC6 h1:NB4pfu0VbVWfQQEfnFqn5inaiQuyhSaUW7VwgH3LW8U=