// give a contract perms for an snative, call it, it calls the snative, ensure the check funciton (f) succeeds
func testSNativeCALLExpectPass(t *testing.T, blockCache *BlockCache, doug *account.Account, snativeAddress, data []byte, f func([]byte) error) {
	perm := vm.RegisteredSNativePermissions[LeftPadWord256(snativeAddress)]
	var addr []byte
	if doug != nil {
		contractCode := callContractCode(snativeAddress)
		doug.Code = contractCode
		doug.Permissions.Base.Set(perm, true)
		blockCache.UpdateAccount(doug)
		addr = doug.Address
	} else {
		acc := blockCache.GetAccount(user[0].Address)
		acc.Permissions.Base.Set(perm, true)
		blockCache.UpdateAccount(acc)
		addr = snativeAddress
	}
	tx, _ := types.NewCallTx(blockCache, user[0].PubKey, addr, data, 100, 10000, 100)
	tx.Sign(chainID, user[0])
	ev, exception := execTxWaitEvent(t, blockCache, tx, types.EventStringAccReceive(snativeAddress)) //
	if exception != "" {
		t.Fatal("Unexpected exception", exception)
	}
	evv := ev.(types.EventMsgCall)
	ret := evv.Return
	if err := f(ret); err != nil {
		t.Fatal(err)
	}
}
Example #2
0
// subscribes to an AccReceive, runs the vm, returns the exception
func runVMWaitEvents(t *testing.T, ourVm *VM, caller, callee *Account, subscribeAddr, contractCode []byte, gas int64) string {
	// we need to catch the event from the CALL to check for exceptions
	evsw := new(events.EventSwitch)
	evsw.Start()
	ch := make(chan interface{})
	fmt.Printf("subscribe to %x\n", subscribeAddr)
	evsw.AddListenerForEvent("test", types.EventStringAccReceive(subscribeAddr), func(msg interface{}) {
		ch <- msg
	})
	evc := events.NewEventCache(evsw)
	ourVm.SetFireable(evc)
	go func() {
		start := time.Now()
		output, err := ourVm.Call(caller, callee, contractCode, []byte{}, 0, &gas)
		fmt.Printf("Output: %v Error: %v\n", output, err)
		fmt.Println("Call took:", time.Since(start))
		if err != nil {
			ch <- err.Error()
		}
		evc.Flush()
	}()
	msg := <-ch
	switch ev := msg.(type) {
	case types.EventMsgCallTx:
		return ev.Exception
	case types.EventMsgCall:
		return ev.Exception
	case string:
		return ev
	}
	return ""
}
// assumes the contract has not been given the permission. calls the it, it calls the snative, expects to fail
func testSNativeCALLExpectFail(t *testing.T, blockCache *BlockCache, doug *account.Account, snativeAddress, data []byte) {
	var addr []byte
	if doug != nil {
		contractCode := callContractCode(snativeAddress)
		doug.Code = contractCode
		blockCache.UpdateAccount(doug)
		addr = doug.Address
	} else {
		addr = snativeAddress
	}
	tx, _ := types.NewCallTx(blockCache, user[0].PubKey, addr, data, 100, 10000, 100)
	tx.Sign(chainID, user[0])
	fmt.Println("subscribing to", types.EventStringAccReceive(snativeAddress))
	_, exception := execTxWaitEvent(t, blockCache, tx, types.EventStringAccReceive(snativeAddress))
	if exception == "" {
		t.Fatal("Expected exception")
	}
}
func TestCreateAccountPermission(t *testing.T) {
	stateDB := dbm.GetDB("state")
	genDoc := newBaseGenDoc(PermsAllFalse, PermsAllFalse)
	genDoc.Accounts[0].Permissions.Base.Set(ptypes.Send, true)          // give the 0 account permission
	genDoc.Accounts[1].Permissions.Base.Set(ptypes.Send, true)          // give the 0 account permission
	genDoc.Accounts[0].Permissions.Base.Set(ptypes.CreateAccount, true) // give the 0 account permission
	st := MakeGenesisState(stateDB, &genDoc)
	blockCache := NewBlockCache(st)

	//----------------------------------------------------------
	// SendTx to unknown account

	// A single input, having the permission, should succeed
	tx := types.NewSendTx()
	if err := tx.AddInput(blockCache, user[0].PubKey, 5); err != nil {
		t.Fatal(err)
	}
	tx.AddOutput(user[6].Address, 5)
	tx.SignInput(chainID, 0, user[0])
	if err := ExecTx(blockCache, tx, true, nil); err != nil {
		t.Fatal("Transaction failed", err)
	}

	// Two inputs, both with send, one with create, one without, should fail
	tx = types.NewSendTx()
	if err := tx.AddInput(blockCache, user[0].PubKey, 5); err != nil {
		t.Fatal(err)
	}
	if err := tx.AddInput(blockCache, user[1].PubKey, 5); err != nil {
		t.Fatal(err)
	}
	tx.AddOutput(user[7].Address, 10)
	tx.SignInput(chainID, 0, user[0])
	tx.SignInput(chainID, 1, user[1])
	if err := ExecTx(blockCache, tx, true, nil); err == nil {
		t.Fatal("Expected error")
	} else {
		fmt.Println(err)
	}

	// Two inputs, both with send, one with create, one without, two ouputs (one known, one unknown) should fail
	tx = types.NewSendTx()
	if err := tx.AddInput(blockCache, user[0].PubKey, 5); err != nil {
		t.Fatal(err)
	}
	if err := tx.AddInput(blockCache, user[1].PubKey, 5); err != nil {
		t.Fatal(err)
	}
	tx.AddOutput(user[7].Address, 4)
	tx.AddOutput(user[4].Address, 6)
	tx.SignInput(chainID, 0, user[0])
	tx.SignInput(chainID, 1, user[1])
	if err := ExecTx(blockCache, tx, true, nil); err == nil {
		t.Fatal("Expected error")
	} else {
		fmt.Println(err)
	}

	// Two inputs, both with send, both with create, should pass
	acc := blockCache.GetAccount(user[1].Address)
	acc.Permissions.Base.Set(ptypes.CreateAccount, true)
	blockCache.UpdateAccount(acc)
	tx = types.NewSendTx()
	if err := tx.AddInput(blockCache, user[0].PubKey, 5); err != nil {
		t.Fatal(err)
	}
	if err := tx.AddInput(blockCache, user[1].PubKey, 5); err != nil {
		t.Fatal(err)
	}
	tx.AddOutput(user[7].Address, 10)
	tx.SignInput(chainID, 0, user[0])
	tx.SignInput(chainID, 1, user[1])
	if err := ExecTx(blockCache, tx, true, nil); err != nil {
		t.Fatal("Unexpected error", err)
	}

	// Two inputs, both with send, both with create, two outputs (one known, one unknown) should pass
	tx = types.NewSendTx()
	if err := tx.AddInput(blockCache, user[0].PubKey, 5); err != nil {
		t.Fatal(err)
	}
	if err := tx.AddInput(blockCache, user[1].PubKey, 5); err != nil {
		t.Fatal(err)
	}
	tx.AddOutput(user[7].Address, 7)
	tx.AddOutput(user[4].Address, 3)
	tx.SignInput(chainID, 0, user[0])
	tx.SignInput(chainID, 1, user[1])
	if err := ExecTx(blockCache, tx, true, nil); err != nil {
		t.Fatal("Unexpected error", err)
	}

	//----------------------------------------------------------
	// CALL to unknown account

	acc = blockCache.GetAccount(user[0].Address)
	acc.Permissions.Base.Set(ptypes.Call, true)
	blockCache.UpdateAccount(acc)

	// call to contract that calls unknown account - without create_account perm
	// create contract that calls the simple contract
	contractCode := callContractCode(user[9].Address)
	caller1ContractAddr := NewContractAddress(user[4].Address, 101)
	caller1Acc := &account.Account{
		Address:     caller1ContractAddr,
		Balance:     0,
		Code:        contractCode,
		Sequence:    0,
		StorageRoot: Zero256.Bytes(),
		Permissions: ptypes.ZeroAccountPermissions,
	}
	blockCache.UpdateAccount(caller1Acc)

	// A single input, having the permission, but the contract doesn't have permission
	txCall, _ := types.NewCallTx(blockCache, user[0].PubKey, caller1ContractAddr, nil, 100, 10000, 100)
	txCall.Sign(chainID, user[0])

	// we need to subscribe to the Receive event to detect the exception
	_, exception := execTxWaitEvent(t, blockCache, txCall, types.EventStringAccReceive(caller1ContractAddr)) //
	if exception == "" {
		t.Fatal("Expected exception")
	}

	// NOTE: for a contract to be able to CreateAccount, it must be able to call
	// NOTE: for a user to be able to CreateAccount, it must be able to send!
	caller1Acc.Permissions.Base.Set(ptypes.CreateAccount, true)
	caller1Acc.Permissions.Base.Set(ptypes.Call, true)
	blockCache.UpdateAccount(caller1Acc)
	// A single input, having the permission, but the contract doesn't have permission
	txCall, _ = types.NewCallTx(blockCache, user[0].PubKey, caller1ContractAddr, nil, 100, 10000, 100)
	txCall.Sign(chainID, user[0])

	// we need to subscribe to the Receive event to detect the exception
	_, exception = execTxWaitEvent(t, blockCache, txCall, types.EventStringAccReceive(caller1ContractAddr)) //
	if exception != "" {
		t.Fatal("Unexpected exception", exception)
	}

}
func TestCreatePermission(t *testing.T) {
	stateDB := dbm.GetDB("state")
	genDoc := newBaseGenDoc(PermsAllFalse, PermsAllFalse)
	genDoc.Accounts[0].Permissions.Base.Set(ptypes.CreateContract, true) // give the 0 account permission
	genDoc.Accounts[0].Permissions.Base.Set(ptypes.Call, true)           // give the 0 account permission
	st := MakeGenesisState(stateDB, &genDoc)
	blockCache := NewBlockCache(st)

	//------------------------------
	// create a simple contract
	fmt.Println("##### CREATE SIMPLE CONTRACT")

	contractCode := []byte{0x60}
	createCode := wrapContractForCreate(contractCode)

	// A single input, having the permission, should succeed
	tx, _ := types.NewCallTx(blockCache, user[0].PubKey, nil, createCode, 100, 100, 100)
	tx.Sign(chainID, user[0])
	if err := ExecTx(blockCache, tx, true, nil); err != nil {
		t.Fatal("Transaction failed", err)
	}
	// ensure the contract is there
	contractAddr := NewContractAddress(tx.Input.Address, tx.Input.Sequence)
	contractAcc := blockCache.GetAccount(contractAddr)
	if contractAcc == nil {
		t.Fatalf("failed to create contract %X", contractAddr)
	}
	if bytes.Compare(contractAcc.Code, contractCode) != 0 {
		t.Fatalf("contract does not have correct code. Got %X, expected %X", contractAcc.Code, contractCode)
	}

	//------------------------------
	// create contract that uses the CREATE op
	fmt.Println("##### CREATE FACTORY")

	contractCode = []byte{0x60}
	createCode = wrapContractForCreate(contractCode)
	factoryCode := createContractCode()
	createFactoryCode := wrapContractForCreate(factoryCode)

	// A single input, having the permission, should succeed
	tx, _ = types.NewCallTx(blockCache, user[0].PubKey, nil, createFactoryCode, 100, 100, 100)
	tx.Sign(chainID, user[0])
	if err := ExecTx(blockCache, tx, true, nil); err != nil {
		t.Fatal("Transaction failed", err)
	}
	// ensure the contract is there
	contractAddr = NewContractAddress(tx.Input.Address, tx.Input.Sequence)
	contractAcc = blockCache.GetAccount(contractAddr)
	if contractAcc == nil {
		t.Fatalf("failed to create contract %X", contractAddr)
	}
	if bytes.Compare(contractAcc.Code, factoryCode) != 0 {
		t.Fatalf("contract does not have correct code. Got %X, expected %X", contractAcc.Code, factoryCode)
	}

	//------------------------------
	// call the contract (should FAIL)
	fmt.Println("###### CALL THE FACTORY (FAIL)")

	// A single input, having the permission, should succeed
	tx, _ = types.NewCallTx(blockCache, user[0].PubKey, contractAddr, createCode, 100, 100, 100)
	tx.Sign(chainID, user[0])
	// we need to subscribe to the Receive event to detect the exception
	_, exception := execTxWaitEvent(t, blockCache, tx, types.EventStringAccReceive(contractAddr)) //
	if exception == "" {
		t.Fatal("expected exception")
	}

	//------------------------------
	// call the contract (should PASS)
	fmt.Println("###### CALL THE FACTORY (PASS)")

	contractAcc.Permissions.Base.Set(ptypes.CreateContract, true)
	blockCache.UpdateAccount(contractAcc)

	// A single input, having the permission, should succeed
	tx, _ = types.NewCallTx(blockCache, user[0].PubKey, contractAddr, createCode, 100, 100, 100)
	tx.Sign(chainID, user[0])
	// we need to subscribe to the Receive event to detect the exception
	_, exception = execTxWaitEvent(t, blockCache, tx, types.EventStringAccReceive(contractAddr)) //
	if exception != "" {
		t.Fatal("unexpected exception", exception)
	}

	//--------------------------------
	fmt.Println("##### CALL to empty address")
	zeroAddr := LeftPadBytes([]byte{}, 20)
	code := callContractCode(zeroAddr)

	contractAddr = NewContractAddress(user[0].Address, 110)
	contractAcc = &account.Account{
		Address:     contractAddr,
		Balance:     1000,
		Code:        code,
		Sequence:    0,
		StorageRoot: Zero256.Bytes(),
		Permissions: ptypes.ZeroAccountPermissions,
	}
	contractAcc.Permissions.Base.Set(ptypes.Call, true)
	contractAcc.Permissions.Base.Set(ptypes.CreateContract, true)
	blockCache.UpdateAccount(contractAcc)

	// this should call the 0 address but not create ...
	tx, _ = types.NewCallTx(blockCache, user[0].PubKey, contractAddr, createCode, 100, 10000, 100)
	tx.Sign(chainID, user[0])
	// we need to subscribe to the Receive event to detect the exception
	_, exception = execTxWaitEvent(t, blockCache, tx, types.EventStringAccReceive(zeroAddr)) //
	if exception != "" {
		t.Fatal("unexpected exception", exception)
	}
	zeroAcc := blockCache.GetAccount(zeroAddr)
	if len(zeroAcc.Code) != 0 {
		t.Fatal("the zero account was given code from a CALL!")
	}
}
func TestCallPermission(t *testing.T) {
	stateDB := dbm.GetDB("state")
	genDoc := newBaseGenDoc(PermsAllFalse, PermsAllFalse)
	genDoc.Accounts[0].Permissions.Base.Set(ptypes.Call, true) // give the 0 account permission
	st := MakeGenesisState(stateDB, &genDoc)
	blockCache := NewBlockCache(st)

	//------------------------------
	// call to simple contract
	fmt.Println("##### SIMPLE CONTRACT")

	// create simple contract
	simpleContractAddr := NewContractAddress(user[0].Address, 100)
	simpleAcc := &account.Account{
		Address:     simpleContractAddr,
		Balance:     0,
		Code:        []byte{0x60},
		Sequence:    0,
		StorageRoot: Zero256.Bytes(),
		Permissions: ptypes.ZeroAccountPermissions,
	}
	st.UpdateAccount(simpleAcc)

	// A single input, having the permission, should succeed
	tx, _ := types.NewCallTx(blockCache, user[0].PubKey, simpleContractAddr, nil, 100, 100, 100)
	tx.Sign(chainID, user[0])
	if err := ExecTx(blockCache, tx, true, nil); err != nil {
		t.Fatal("Transaction failed", err)
	}

	//----------------------------------------------------------
	// call to contract that calls simple contract - without perm
	fmt.Println("##### CALL TO SIMPLE CONTRACT (FAIL)")

	// create contract that calls the simple contract
	contractCode := callContractCode(simpleContractAddr)
	caller1ContractAddr := NewContractAddress(user[0].Address, 101)
	caller1Acc := &account.Account{
		Address:     caller1ContractAddr,
		Balance:     0,
		Code:        contractCode,
		Sequence:    0,
		StorageRoot: Zero256.Bytes(),
		Permissions: ptypes.ZeroAccountPermissions,
	}
	blockCache.UpdateAccount(caller1Acc)

	// A single input, having the permission, but the contract doesn't have permission
	tx, _ = types.NewCallTx(blockCache, user[0].PubKey, caller1ContractAddr, nil, 100, 10000, 100)
	tx.Sign(chainID, user[0])

	// we need to subscribe to the Receive event to detect the exception
	_, exception := execTxWaitEvent(t, blockCache, tx, types.EventStringAccReceive(caller1ContractAddr)) //
	if exception == "" {
		t.Fatal("Expected exception")
	}

	//----------------------------------------------------------
	// call to contract that calls simple contract - with perm
	fmt.Println("##### CALL TO SIMPLE CONTRACT (PASS)")

	// A single input, having the permission, and the contract has permission
	caller1Acc.Permissions.Base.Set(ptypes.Call, true)
	blockCache.UpdateAccount(caller1Acc)
	tx, _ = types.NewCallTx(blockCache, user[0].PubKey, caller1ContractAddr, nil, 100, 10000, 100)
	tx.Sign(chainID, user[0])

	// we need to subscribe to the Receive event to detect the exception
	_, exception = execTxWaitEvent(t, blockCache, tx, types.EventStringAccReceive(caller1ContractAddr)) //
	if exception != "" {
		t.Fatal("Unexpected exception:", exception)
	}

	//----------------------------------------------------------
	// call to contract that calls contract that calls simple contract - without perm
	// caller1Contract calls simpleContract. caller2Contract calls caller1Contract.
	// caller1Contract does not have call perms, but caller2Contract does.
	fmt.Println("##### CALL TO CONTRACT CALLING SIMPLE CONTRACT (FAIL)")

	contractCode2 := callContractCode(caller1ContractAddr)
	caller2ContractAddr := NewContractAddress(user[0].Address, 102)
	caller2Acc := &account.Account{
		Address:     caller2ContractAddr,
		Balance:     1000,
		Code:        contractCode2,
		Sequence:    0,
		StorageRoot: Zero256.Bytes(),
		Permissions: ptypes.ZeroAccountPermissions,
	}
	caller1Acc.Permissions.Base.Set(ptypes.Call, false)
	caller2Acc.Permissions.Base.Set(ptypes.Call, true)
	blockCache.UpdateAccount(caller1Acc)
	blockCache.UpdateAccount(caller2Acc)

	tx, _ = types.NewCallTx(blockCache, user[0].PubKey, caller2ContractAddr, nil, 100, 10000, 100)
	tx.Sign(chainID, user[0])

	// we need to subscribe to the Receive event to detect the exception
	_, exception = execTxWaitEvent(t, blockCache, tx, types.EventStringAccReceive(caller1ContractAddr)) //
	if exception == "" {
		t.Fatal("Expected exception")
	}

	//----------------------------------------------------------
	// call to contract that calls contract that calls simple contract - without perm
	// caller1Contract calls simpleContract. caller2Contract calls caller1Contract.
	// both caller1 and caller2 have permission
	fmt.Println("##### CALL TO CONTRACT CALLING SIMPLE CONTRACT (PASS)")

	caller1Acc.Permissions.Base.Set(ptypes.Call, true)
	blockCache.UpdateAccount(caller1Acc)

	tx, _ = types.NewCallTx(blockCache, user[0].PubKey, caller2ContractAddr, nil, 100, 10000, 100)
	tx.Sign(chainID, user[0])

	// we need to subscribe to the Receive event to detect the exception
	_, exception = execTxWaitEvent(t, blockCache, tx, types.EventStringAccReceive(caller1ContractAddr)) //
	if exception != "" {
		t.Fatal("Unexpected exception", exception)
	}
}