During new transaction verification if there's an on-chain conflicting
transaction, we should check the signers of this conflicting transaction.
If the signers intersect with signers of the incoming transaction, then
the conflict is treated as valid and verification for new incoming
transaction should fail. Otherwise, the conflict is treated as the
malicious attack attempt and will not be taken into account;
verification for the new incoming transaction should continue.
This commint implements the scheme described at
https://github.com/neo-project/neo/pull/2818#issuecomment-1632972055,
thanks to @shargon for digging.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
Witnesses are not yet created by the moment we return this error,
thus, it was always 0 as an actual number of witnesses in
ErrInvalidWitnessNum.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
`(*Blockchain).HasTransaction` is one of the oldest methods in our
codebase, and currently it's completely unused. I also doubt that
this method works as expected because it returns `true` if transaction
in the mempool.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
This prevents the possible attack on notary request sender when
malicious partie is allowed to send notary request with main transaction
being someone else's fallback.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
Ensure that Scopes can be properly parsed not only from the string
representation, but also from a single byte. transaction.Signer
is not affected (checked against the C# implementation), only
RPC-related signer scopes are allowed to be unmarshalled from byte.
Close#3059.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
This check is good and was present here since #1729, but it was
accidently removed from the reference implementation (see the
discussion in https://github.com/neo-project/neo/issues/2848). The
removal of this check from the C# node leaded to the T5 testnet state
diff since 1670095 heigh which causes inability to process new blocks
since 2272533 height (see #3049). This check was added back to the
C# node in https://github.com/neo-project/neo/pull/2849, but it is
planned to be the part of the upcoming 3.6.0 C# node release.
We need to keep our testnet healthy, thus, strict contract script
check will be temporary removed from the node code and is planned
to be added back to be a part of the next 3.6.0-compatible release.
Close#3049.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
Our wrapping optimization relied on the caller context having a TRY block,
but each context (including internal calls!) has an exception handling stack
of its own, which means that for an invocation stack of
entry
A.someMethodFromEntry() # this one has a TRY
A.internalMethodViaCALL() # this one doesn't
B.someMethod()
we get `HasTryBlock() == false` for `A.internalMethodViaCALL()` context, which
leads to missing wrapper and missing rollbacks if B is to THROW. What this
patch does instead is it checks for any context within contract boundaries.
Fixes#3045.
Signed-off-by: Roman Khimov <roman@nspcc.ru>
That's the way how C# node handles equality checks for stackitem.Interop types
for these points. Ref. https://github.com/nspcc-dev/neo-go/issues/3002#issuecomment-1591220501.
Along the way, add GT case for CryptoLib's bls12381Equal method. It should be there since #2940.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
In this case emitted event parameters should match from invocation to
invocation. It's an error otherwise (and if the type is not Any).
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
Unfortunately, without pre-set user extended types configuration for events
and without --guess-eventtypes flag set we are allowed to rely only on manifest
information about types. Manifest can't give us a lot of information, but we
still need to be able to generate RPC binding. Arrays and structs are correctly
handled by the current code, but maps always rely on the fact that map's value
type is set. It's not true in the described case, so make the maps type convertor
handle this situation in a similar way how arrays are handled.
Without this commit the following panic occurs on attempt to generate RPC binding:
```
--- FAIL: TestAssistedRPCBindings/testdata/notifications (0.01s)
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x7f7c0e]
goroutine 190 [running]:
testing.tRunner.func1.2({0x109cb40, 0x1d58760})
/usr/local/go/src/testing/testing.go:1396 +0x24e
testing.tRunner.func1()
/usr/local/go/src/testing/testing.go:1399 +0x39f
panic({0x109cb40, 0x1d58760})
/usr/local/go/src/runtime/panic.go:884 +0x212
github.com/nspcc-dev/neo-go/pkg/smartcontract/rpcbinding.extendedTypeToGo({0x22, {0x0, 0x0}, {0x0, 0x0}, 0x0, 0x0, {0x0, 0x0, 0x0}}, ...)
/home/anna/Documents/GitProjects/nspcc-dev/neo-go/pkg/smartcontract/rpcbinding/binding.go:515 +0x36e
github.com/nspcc-dev/neo-go/pkg/smartcontract/rpcbinding.scTypeToGo({0xc000206d92?, 0xc000206d80?}, 0x22, 0xc0005d70e0)
/home/anna/Documents/GitProjects/nspcc-dev/neo-go/pkg/smartcontract/rpcbinding/binding.go:643 +0x138
github.com/nspcc-dev/neo-go/pkg/smartcontract/rpcbinding.scTemplateToRPC({{0xc00049bb07, 0x7}, 0xc0004c89c0, {0x33, 0x22, 0x11, 0x0, 0xff, 0xee, 0xdd, ...}, ...}, ...)
/home/anna/Documents/GitProjects/nspcc-dev/neo-go/pkg/smartcontract/rpcbinding/binding.go:686 +0xbc4
github.com/nspcc-dev/neo-go/pkg/smartcontract/rpcbinding.Generate({{0xc00049bb07, 0x7}, 0xc0004c89c0, {0x33, 0x22, 0x11, 0x0, 0xff, 0xee, 0xdd, ...}, ...})
/home/anna/Documents/GitProjects/nspcc-dev/neo-go/pkg/smartcontract/rpcbinding/binding.go:421 +0x387
github.com/nspcc-dev/neo-go/cli/smartcontract.contractGenerateSomething(0xc00043e2c0, 0x137cd00)
/home/anna/Documents/GitProjects/nspcc-dev/neo-go/cli/smartcontract/generate.go:99 +0x855
github.com/nspcc-dev/neo-go/cli/smartcontract.contractGenerateRPCWrapper(0xc00043e2c0?)
/home/anna/Documents/GitProjects/nspcc-dev/neo-go/cli/smartcontract/generate.go:60 +0x25
github.com/urfave/cli.HandleAction({0x1048380?, 0x137c660?}, 0x13?)
/home/anna/go/pkg/mod/github.com/urfave/cli@v1.22.5/app.go:524 +0x50
github.com/urfave/cli.Command.Run({{0x123539d, 0x13}, {0x0, 0x0}, {0x0, 0x0, 0x0}, {0x12577ad, 0x2a}, {0x127ad35, ...}, ...}, ...)
/home/anna/go/pkg/mod/github.com/urfave/cli@v1.22.5/command.go:173 +0x65b
github.com/urfave/cli.(*App).RunAsSubcommand(0xc0001f4000, 0xc00043e000)
/home/anna/go/pkg/mod/github.com/urfave/cli@v1.22.5/app.go:405 +0x91b
github.com/urfave/cli.Command.startApp({{0x12281e1, 0x8}, {0x0, 0x0}, {0x0, 0x0, 0x0}, {0x1254d8a, 0x28}, {0x0, ...}, ...}, ...)
/home/anna/go/pkg/mod/github.com/urfave/cli@v1.22.5/command.go:372 +0x6e7
github.com/urfave/cli.Command.Run({{0x12281e1, 0x8}, {0x0, 0x0}, {0x0, 0x0, 0x0}, {0x1254d8a, 0x28}, {0x0, ...}, ...}, ...)
/home/anna/go/pkg/mod/github.com/urfave/cli@v1.22.5/command.go:102 +0x825
github.com/urfave/cli.(*App).Run(0xc00024e000, {0xc0004f6420, 0xb, 0xb})
/home/anna/go/pkg/mod/github.com/urfave/cli@v1.22.5/app.go:277 +0x8a7
github.com/nspcc-dev/neo-go/cli/smartcontract.TestAssistedRPCBindings.func1.1(0x9f8829?)
/home/anna/Documents/GitProjects/nspcc-dev/neo-go/cli/smartcontract/generate_test.go:395 +0x5fc
testing.tRunner(0xc0006824e0, 0xc0004a3680)
/usr/local/go/src/testing/testing.go:1446 +0x10b
created by testing.(*T).Run
/usr/local/go/src/testing/testing.go:1493 +0x35f
```
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
There are two ways of doing this: first one is to emit all notifications
parameter data into rpcbindings configuration on compile time (event if
the parameter has a simple type), and the second one is to fetch parameter
type from the manifest on rpcbinding file generation if needed (we always
have manifest at this stage, thus it's not a problem to retrieve necessary
information). The latter case is chosen to reduce the bindings configuration
file size.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
Notification and its parameters may have any UTF8-compatible name
which is inappropriate for bindings configuration and for the resulting
RPC bindings file. This commit stores the prettified version of
notification's name and parameters that are ready to be used in the
resulting RPC binding without any changes.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
The user should specify it via parameter's `extendedtype` field and
via upper-level `namedtypes` field of the contract configuration YAML.
Also, as we have proper event structure source, make the `--guess-eventtype`
compilation option and make event types guess optional.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
New rule for writing blocks of code to our template: new line before
the block starts and new line after the block ends. This rule is the
same as the one we use during manual typing.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
Properly load the provided method using NEF and hash specified. It allows
to have NEF properly set in the VM context and handle CALLT instruction
correctly.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
Regular Client doesn't care much about connections, because HTTP client's Do
method can reuse old ones or create additional ones on the fly. So one request
can fail and the next one easily succeed. WSClient is different, it works via
a single connection and if it breaks, it breaks forever for this
client. Callers will get some error on every request afterwards and it'd be
nice for this error to be the same so that API users could detect
disconnection this way too.
Related to nspcc-dev/neofs-node#2325.
Signed-off-by: Roman Khimov <roman@nspcc.ru>
