This method returns persisted block height and doesn't take into account
persisting block height. Some of the callers of this method relay on
the wrong assumption that BlockHeight() returns persisting block index.
Fix improper usages of this method and adjust tests. Ref.
61a066583e/src/Neo/SmartContract/ApplicationEngine.cs (L634).
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
We already have tests for Permission deserialisation, so port the first
part of https://github.com/neo-project/neo/pull/2948.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
We have this log on the network server side, but it would also be
useful in case of failed blockchain initialization.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
Refactored native NeoToken cache scheme introduced in #3110 sometimes requires
validators list recalculation during native cache initialization process (when
initializing with the existing storage from the block that is preceded each N-th block).
To recalculate validators from candidates, native NeoToken needs an access to
cached native Policy blocked accounts. By the moment of native Neo initialization,
the cache of native Policy is not yet initialized, thus we need a direct DAO access
for Policy to handle blocked account check.
Close#3181.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
Disable the following linter warning:
```
superfluous-else: if block ends with call to panic function, so drop this else and outdent its block (revive)
```
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
Fix the following linter warning:
```
indent-error-flow: if block ends with a return statement, so drop this else and outdent its block (move short variable declaration to its own line if necessary) (revive)
```
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
This partially reverts commit c26a962b55 for testing
chains configurations.
Ref. #2975, although this commit doesn't close it. This commit is an attempt to
enforce IPv4 for our test clients to avoid problem described in the issue.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
This section contains genesis-related settings including genesis-related or natives-related
extensions. Currently it includes the set of node roles that may be designated
duing the native Designation contract initialisation.
Close#3156.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
And rename roles.go to role.go to match the role_string.go and the
existing naming pattern for enums.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
* Rename c.done channel to c.readerDone
* Introduce c.writerDone channel that is closed if the wsWriter's loop
is done
* Make the error returned by makeWsRequests verbose
Signed-off-by: Ayrtat <amper.meter1775@gmail.com>
We often use binary.PutUint*, but almost all these cases have preallocated
buffer of the size that matches exactly the desired one and use a single or
a couple of calls to PutUint*. Thus, I don't think that replacing
binary.PutUint* by AppendUint* will make things better for all these usages.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
If it's the end of epoch, then it contains the updated validators list recalculated
during the last block's PostPersist. If it's middle of the epoch, then it contains
previously calculated value (value for the previous completed epoch) that is equal
to the current nextValidators cache value.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
Do not recalculate new committee/validators value in the start of every
subsequent epoch. Use values that was calculated in the PostPersist method
of the previously processed block in the end of the previous epoch.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
No funcional changes, just refactoring. It doesn't need the whole cache,
only the set of committee keys with votes.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
Recalculate them once per epoch. Consensus is aware of it and must
call CalculateNextValidators exactly when needed.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
We have two similar blockchain APIs: GetNextBlockValidators and GetValidators.
It's hard to distinguish them, thus renaming it to match the meaning, so what
we have now is:
GetNextBlockValidators literally just returns the top of the committee that
was elected in the start of batch of CommitteeSize blocks batch. It doesn't
change its valie every block.
ComputeNextBlockValidators literally computes the list of validators based on
the most fresh committee members information got from the NeoToken's storage
and based on the latest register/unregister/vote events. The list returned by
this method may be updated every block.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
Blockchain passes his own pure unwrapped DAO to
(*Blockchain).ComputeNextBlockValidators which means that native
RW NEO cache structure stored inside this DAO can be modified by
anyone who uses exported ComputeNextBlockValidators Blockchain API,
and technically it's valid, and we should allow this, because it's
the only purpose of `validators` caching. However, at the same time
some RPC server is allowed to request a subsequent wrapped DAO for
some test invocation. It means that descendant wrapped DAO
eventually will request RW NEO cache and try to `Copy()`
the underlying's DAO cache which is in direct use of
ComputeNextBlockValidators. Here's the race:
ComputeNextBlockValidators called by Consensus service tries to
update cached `validators` value, and descendant wrapped DAO
created by the RPC server tries to copy DAO's native cache and
read the cached `validators` value.
So the problem is that native cache not designated to handle
concurrent access between parent DAO layer and derived (wrapped)
DAO layer. I've carefully reviewed all the usages of native cache,
and turns out that the described situation is the only place where
parent DAO is used directly to modify its cache concurrently with
some descendant DAO that is trying to access the cache. All other
usages of native cache (not only NEO, but also all other native
contrcts) strictly rely on the hierarchical DAO structure and don't
try to perform these concurrent operations between DAO layers.
There's also persist operation, but it keeps cache RW lock taken,
so it doesn't have this problem as far. Thus, in this commit we rework
NEO's `validators` cache value so that it always contain the relevant
list for upper Blockchain's DAO and is updated every PostPersist (if
needed).
Note: we must be very careful extending our native cache in the
future, every usage of native cache must be checked against the
described problem.
Close#2989.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
Network server constructor reads config.Version variable, and
testcli.DeployContract writes dummy config.Version which causes
race in tests. Avoid this race by moving config.Version initialisation
to a separate package and perform it inside test packages init().
Close#3011, close#3017.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
To dump the DB, the service must be stopped.
If this is not the case `dump` command just hangs without any output,
which _may_ be unexpected from the ops POV.
Introduce a 1 second timeous, which is more than enough, given
that bbolt retries doing flock() every 50ms.
Signed-off-by: Evgenii Stratonikov <fyfyrchik@runbox.com>
Currently we take int64 value from the Go parser and push it to the
stack. Using uint64 is not a common practice (usually we just use `int`),
but can be a problem while doing bit arithmetic and serializing numbers.
Signed-off-by: Evgenii Stratonikov <fyfyrchik@runbox.com>
An upgrade from gnark v0.8.X to v0.9.0 changes serialization format of verifying/proving keys
and proofs. In neo-go zkpbinding package we have to support both at least for now, because
gnark@v0.9.0 requires minimum go 1.19.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
The example shows that the proover knows the solution of the cubic
equation: y = x^3 + x + 5. The example is constructed for BLS12-381
curve points using Groth-16 prooving algorithm. The example includes
everything that developer needs to start using ZKP on the NEO platform
with Go SDK:
1. The described cubic circuit implementation.
2. The off-chain proof generation with the help of gnark-crypto library.
3. Go verification contract generation and deployment with the help of
NeoGo libraries.
4. The on-chain proof verification for various sets of input data.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
Valid transactions can't use more than MaxVerificationGAS for script execution
and this applies to the whole set of signers, so use this value by default
unless local instance configuration suggests something lower for generic
invocations.
Signed-off-by: Roman Khimov <roman@nspcc.ru>
We can ignore core.ErrInvalidSignature (which means that the script has
executed, but returned false), but we shouldn't ignore other errors which
likely mean that the script is incorrect (or hits some resource limits).
Use neorpc.ErrInvalidSignature as a return to separate this case from
contract-based verification.
Signed-off-by: Roman Khimov <roman@nspcc.ru>
It requires explicit signers, and we have a problem with the old code:
2023-09-12T18:42:00.063Z WARN failed to perform oracle request {"url": "neofs:FMDZvqUCqcduZa8HD6wJNsHWrJ6sqkgBveGuYuL38pvH/5DCg4wUgWuWN3zsF4P4HdAzY2iKvXcrZ8QBLYGd1D1g2", "error": "failed to create client: incorrect signer: expected ECDSA_DETERMINISTIC_SHA256 scheme"}
Signed-off-by: Roman Khimov <roman@nspcc.ru>
It can be non-zero even if VoteTo is NULL. Fixes state diff with 3.6.0:
block 41660: value mismatch for key +////xTrvgat3qG/w8hQoD/I4MgUz6rygA==: QQQhAS8hA7yiAAAhAA== vs QQQhAS8hA7yiAAAhB+POSWfBCAE=
Related to #2844.
Signed-off-by: Roman Khimov <roman@nspcc.ru>
If the parameter in the opcode dump is a 20-byte value, the converted values,
such as the address and the swapped endianness, have been added.
Signed-off-by: Tatiana Nesterenko <tatiana@nspcc.io>
