Struct pallet_sudo::CheckOnlySudoAccount

pub struct CheckOnlySudoAccount<T: Config + Send + Sync>(/* private fields */);

Ensure that signed transactions are only valid if they are signed by sudo account.

In the initial phase of a chain without any tokens you can not prevent accounts from sending transactions. These transactions would enter the transaction pool as the succeed the validation, but would fail on applying them as they are not allowed/disabled/whatever. This would be some huge dos vector to any kind of chain. This extension solves the dos vector by preventing any kind of transaction entering the pool as long as it is not signed by the sudo account.

Implementations

impl<T: Config + Send + Sync> CheckOnlySudoAccount<T>

pub fn new() -> Self

Creates new TransactionExtension to check sudo key.

Trait Implementations

impl<T: Clone + Config + Send + Sync> Clone for CheckOnlySudoAccount<T>

fn clone(&self) -> CheckOnlySudoAccount<T>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Config + Send + Sync> Debug for CheckOnlySudoAccount<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: Config + Send + Sync> Decode for CheckOnlySudoAccount<T>

where PhantomData<T>: Decode,

fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy, ) -> Result<Self, Error>

Attempt to deserialise the value from input.

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self>, ) -> Result<DecodeFinished, Error>

where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory.

fn skip<I>(input: &mut I) -> Result<(), Error>

where I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl<T: Config + Send + Sync> Default for CheckOnlySudoAccount<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T: Config + Send + Sync> Encode for CheckOnlySudoAccount<T>

where PhantomData<T>: Encode,

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy, )

Convert self to a slice and append it to the destination.

fn encode(&self) -> Vec<u8>

Convert self to an owned vector.

fn using_encoded<__CodecOutputReturn, __CodecUsingEncodedCallback: FnOnce(&[u8]) -> __CodecOutputReturn>( &self, f: __CodecUsingEncodedCallback, ) -> __CodecOutputReturn

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl<T: PartialEq + Config + Send + Sync> PartialEq for CheckOnlySudoAccount<T>

fn eq(&self, other: &CheckOnlySudoAccount<T>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T: Config + Send + Sync> TransactionExtension<<T as Config>::RuntimeCall> for CheckOnlySudoAccount<T>

where <T as Config>::RuntimeCall: Dispatchable<Info = DispatchInfo>, <<T as Config>::RuntimeCall as Dispatchable>::RuntimeOrigin: AsSystemOriginSigner<T::AccountId> + Clone,

const IDENTIFIER: &'static str = "CheckOnlySudoAccount"

Unique identifier of this signed extension.

type Implicit = ()

Any additional data which was known at the time of transaction construction and can be useful in authenticating the transaction. This is determined dynamically in part from the on-chain environment using the implicit function and not directly contained in the transaction itself and therefore is considered “implicit”.

type Pre = ()

The type that encodes information that can be passed from prepare to post_dispatch.

type Val = ()

The type that encodes information that can be passed from validate to prepare.

fn weight(&self, _: &<T as Config>::RuntimeCall) -> Weight

The weight consumed by executing this extension instance fully during transaction dispatch.

fn validate( &self, origin: <<T as Config>::RuntimeCall as Dispatchable>::RuntimeOrigin, _call: &<T as Config>::RuntimeCall, info: &DispatchInfoOf<<T as Config>::RuntimeCall>, _len: usize, _self_implicit: Self::Implicit, _inherited_implication: &impl Encode, _source: TransactionSource, ) -> Result<(ValidTransaction, Self::Val, <<T as Config>::RuntimeCall as Dispatchable>::RuntimeOrigin), TransactionValidityError>

Validate a transaction for the transaction queue.

fn prepare( self, _val: Self::Val, _origin: &DispatchOriginOf<<T as Config>::RuntimeCall>, _call: &<T as Config>::RuntimeCall, _info: &DispatchInfoOf<<T as Config>::RuntimeCall>, _len: usize, ) -> Result<Self::Pre, TransactionValidityError>

Do any pre-flight stuff for a transaction after validation.

fn implicit(&self) -> Result<Self::Implicit, TransactionValidityError>

Determine any additional data which was known at the time of transaction construction and can be useful in authenticating the transaction. The expected usage of this is to include in any data which is signed and verified as part of transaction validation. Also perform any pre-signature-verification checks and return an error if needed.

fn metadata() -> Vec<TransactionExtensionMetadata>

Returns the metadata for this extension.

fn post_dispatch_details( _pre: Self::Pre, _info: &<Call as Dispatchable>::Info, _post_info: &<Call as Dispatchable>::PostInfo, _len: usize, _result: &Result<(), DispatchError>, ) -> Result<Weight, TransactionValidityError>

Do any post-flight stuff for an extrinsic.

fn post_dispatch( pre: Self::Pre, info: &<Call as Dispatchable>::Info, post_info: &mut <Call as Dispatchable>::PostInfo, len: usize, result: &Result<(), DispatchError>, ) -> Result<(), TransactionValidityError>

A wrapper for post_dispatch_details that refunds the unspent weight consumed by this extension into the post dispatch information.

fn bare_validate( _call: &Call, _info: &<Call as Dispatchable>::Info, _len: usize, ) -> Result<ValidTransaction, TransactionValidityError>

Validation logic for bare extrinsics.

fn bare_validate_and_prepare( _call: &Call, _info: &<Call as Dispatchable>::Info, _len: usize, ) -> Result<(), TransactionValidityError>

All pre-flight logic run before dispatching bare extrinsics.

fn bare_post_dispatch( _info: &<Call as Dispatchable>::Info, _post_info: &mut <Call as Dispatchable>::PostInfo, _len: usize, _result: &Result<(), DispatchError>, ) -> Result<(), TransactionValidityError>

Post dispatch logic run after dispatching bare extrinsics.

impl<T> TypeInfo for CheckOnlySudoAccount<T>

where PhantomData<T>: TypeInfo + 'static, T: Config + Send + Sync + 'static,

type Identity = CheckOnlySudoAccount<T>

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl<T: Config + Send + Sync> EncodeLike for CheckOnlySudoAccount<T>

where PhantomData<T>: Encode,

impl<T: Eq + Config + Send + Sync> Eq for CheckOnlySudoAccount<T>

impl<T: Config + Send + Sync> StructuralPartialEq for CheckOnlySudoAccount<T>