Struct pallet_sudo::CheckOnlySudoAccount

pub struct CheckOnlySudoAccount<T: Config + Send + Sync>(_);

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 SignedExtension 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 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 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<R, F: FnOnce(&[u8]) -> R>(&self, f: F) -> R

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

fn size_hint(&self) -> usize

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

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl<T: PartialEq + Config + Send + Sync> PartialEq<CheckOnlySudoAccount<T>> 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> SignedExtension for CheckOnlySudoAccount<T>where <T as Config>::RuntimeCall: Dispatchable<Info = DispatchInfo>,

const IDENTIFIER: &'static str = "CheckOnlySudoAccount"

Unique identifier of this signed extension.

type AccountId = <T as Config>::AccountId

The type which encodes the sender identity.

type Call = <T as Config>::RuntimeCall

The type which encodes the call to be dispatched.

type AdditionalSigned = ()

Any additional data that will go into the signed payload. This may be created dynamically from the transaction using the additional_signed function.

type Pre = ()

The type that encodes information that can be passed from pre_dispatch to post-dispatch.

fn additional_signed( &self ) -> Result<Self::AdditionalSigned, TransactionValidityError>

Construct any additional data that should be in the signed payload of the transaction. Can also perform any pre-signature-verification checks and return an error if needed.

fn validate( &self, who: &Self::AccountId, _call: &Self::Call, info: &DispatchInfoOf<Self::Call>, _len: usize ) -> TransactionValidity

Validate a signed transaction for the transaction queue.

fn pre_dispatch( self, who: &Self::AccountId, call: &Self::Call, info: &DispatchInfoOf<Self::Call>, len: usize ) -> Result<Self::Pre, TransactionValidityError>

Do any pre-flight stuff for a signed transaction.

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

Validate an unsigned transaction for the transaction queue.

fn pre_dispatch_unsigned( call: &Self::Call, info: &<Self::Call as Dispatchable>::Info, len: usize ) -> Result<(), TransactionValidityError>

Do any pre-flight stuff for a unsigned transaction.

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

Do any post-flight stuff for an extrinsic.

fn metadata() -> Vec<SignedExtensionMetadata, Global>

Returns the metadata for this signed extension.

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<CheckOnlySudoAccount<T>> for CheckOnlySudoAccount<T>where PhantomData<T>: Encode,

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

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

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