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fix(fxconfig/transaction): prevent duplicate endorsements per MSP #250

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fix(fxconfig/transaction): prevent duplicate endorsements per MSP #250

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10 changes: 10 additions & 0 deletions tools/fxconfig/internal/transaction/endorse.go
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Original file line number Diff line number Diff line change
Expand Up @@ -71,6 +71,16 @@ func Endorse(signer msp.SigningIdentity, txID string, tx *applicationpb.Tx) (*ap
}
}

for _, existing := range tx.Endorsements[nsIdx].EndorsementsWithIdentity {
if existing.GetIdentity().GetMspId() == signerIdentity.GetMspId() {
return nil, fmt.Errorf(
"duplicate endorsement: signer %q already endorsed namespace %d",
signerIdentity.GetMspId(),
nsIdx,
)
}
}

tx.Endorsements[nsIdx].EndorsementsWithIdentity = append(tx.Endorsements[nsIdx].EndorsementsWithIdentity, eid)
}

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21 changes: 21 additions & 0 deletions tools/fxconfig/internal/transaction/endorse_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -187,6 +187,27 @@ func TestEndorse(t *testing.T) {
}
}

func TestEndorse_DuplicateSignerReturnsError(t *testing.T) {
t.Parallel()

tx := &applicationpb.Tx{
Namespaces: []*applicationpb.TxNamespace{
{NsId: "ns1", NsVersion: 0},
},
}
signer := &mockSigningIdentity{mspID: "Org1MSP"}

first, err := Endorse(signer, "tx-dup", tx)
require.NoError(t, err)
require.Len(t, first.Endorsements, 1)
require.Len(t, first.Endorsements[0].EndorsementsWithIdentity, 1)

second, err := Endorse(signer, "tx-dup", first)
require.Error(t, err)
require.Nil(t, second)
require.Contains(t, err.Error(), "duplicate endorsement")
}

func TestGenerateTxID(t *testing.T) {
t.Parallel()

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