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fix(unmerged): contract caller as a chain extension origin #301

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fix(unmerged): contract caller as a chain extension origin #301

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ce009a1
fix: extension origin
chungquantin Sep 21, 2024
e5f84aa
test: transfer_from
chungquantin Sep 21, 2024
6f17c09
chore: add TODO
chungquantin Sep 21, 2024
7e23172
fix: formatting
chungquantin Sep 21, 2024
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21 changes: 14 additions & 7 deletions extension/src/environment.rs
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Original file line number Diff line number Diff line change
@@ -1,7 +1,10 @@
use core::fmt::Debug;

use frame_support::pallet_prelude::Weight;
use pallet_contracts::chain_extension::{BufInBufOutState, ChargedAmount, Result, State};
use pallet_contracts::{
chain_extension::{BufInBufOutState, ChargedAmount, Result, State},
Origin,
};
use sp_std::vec::Vec;

use crate::AccountIdOf;
Expand Down Expand Up @@ -168,14 +171,14 @@
type AccountId;

/// Returns a reference to the account id of the current contract.
fn address(&self) -> &Self::AccountId;
fn address(&self) -> Self::AccountId;
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Why are we changing this?

}

impl Ext for () {
type AccountId = ();

fn address(&self) -> &Self::AccountId {
&()
fn address(&self) -> Self::AccountId {
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Again, why are we changing this?

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@chungquantin chungquantin Sep 23, 2024 •
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This was changed just to test if it works (will be reverted later when we decide the next step with the extension origin). Reason why I don't add the method caller() because it will bring back stuffs that @evilrobot-01 removed before #265 that removed the Config associated type. The caller() method returns OriginFor<Config> so if we want that method, we need to revert the changed Frank made.

()

Check warning on line 181 in extension/src/environment.rs

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GitHub Actions / clippy

unneeded unit expression 

warning: unneeded unit expression
   --> extension/src/environment.rs:181:3
    |
181 |         ()
    |         ^^ help: remove the final `()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
    = note: `#[warn(clippy::unused_unit)]` on by default
}
}

Expand All @@ -185,12 +188,16 @@
impl<'a, E: pallet_contracts::chain_extension::Ext> Ext for ExternalEnvironment<'a, E> {
type AccountId = AccountIdOf<E::T>;

fn address(&self) -> &Self::AccountId {
self.0.address()
fn address(&self) -> Self::AccountId {
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Can we not add a function caller instead? This function is to get the address and should not be changed tmo

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Explained here: #301 (comment)

// TODO: Need to decide which address to return.
match self.0.caller() {
Origin::Root => self.0.address().clone(),
Origin::Signed(caller) => caller,
}
}
}

#[test]
fn default_ext_works() {
assert_eq!(().address(), &())
assert_eq!(().address(), ())
}
2 changes: 1 addition & 1 deletion extension/src/functions.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -53,7 +53,7 @@
let charged = env.charge_weight(dispatch_info.weight)?;
log::debug!(target: Logger::LOG_TARGET, "pre-dispatch weight charged: charged={charged:?}");
// Contract is the origin by default.
let origin = RawOrigin::Signed(env.ext().address().clone());
let origin = RawOrigin::Signed(env.ext().address());
log::debug!(target: Logger::LOG_TARGET, "contract origin: origin={origin:?}");
let mut origin: Config::RuntimeOrigin = origin.into();
// Ensure call allowed.
Expand All @@ -80,7 +80,7 @@

/// A function for reading runtime state.
pub struct ReadState<M, C, R, D, F, RC = DefaultConverter<<R as Readable>::Result>, E = (), L = ()>(
PhantomData<(M, C, R, D, F, RC, E, L)>,

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very complex type used. Consider factoring parts into `type` definitions 

warning: very complex type used. Consider factoring parts into `type` definitions
  --> extension/src/functions.rs:83:2
   |
83 |     PhantomData<(M, C, R, D, F, RC, E, L)>,
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
   = note: `#[warn(clippy::type_complexity)]` on by default
);
impl<
Matcher: Matches,
Expand Down
4 changes: 2 additions & 2 deletions extension/src/mock.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -350,8 +350,8 @@ pub(crate) struct MockExt {
impl environment::Ext for MockExt {
type AccountId = AccountIdOf<Test>;

fn address(&self) -> &Self::AccountId {
&self.address
fn address(&self) -> Self::AccountId {
self.address
}
}

Expand Down
9 changes: 4 additions & 5 deletions pop-api/examples/fungibles/lib.rs
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Expand Up @@ -67,14 +67,13 @@ mod fungibles {
#[ink(constructor, payable)]
pub fn new(
id: TokenId,
// TODO: If admin is different than the contract address, `NoPermission` thrown for mint, burn
// _admin: AccountId,
admin: AccountId,
min_balance: Balance,
) -> Result<Self, PSP22Error> {
let mut contract = Self { id };
let contract_id = contract.env().account_id();
api::create(id, contract_id, min_balance).map_err(PSP22Error::from)?;
contract.emit_created_event(id, contract_id, contract_id);
api::create(id, admin, min_balance).map_err(PSP22Error::from)?;
contract.emit_created_event(id, contract_id, admin);
Ok(contract)
}
}
Expand Down Expand Up @@ -161,7 +160,7 @@ mod fungibles {
api::transfer_from(self.id, from, to, value).map_err(PSP22Error::from)?;
// Emit events.
self.emit_transfer_event(Some(caller), Some(to), value);
let allowance = self.allowance(from, to).saturating_sub(value);
let allowance = self.allowance(from, caller).saturating_sub(value);
self.emit_approval_event(from, caller, allowance);
Ok(())
}
Expand Down
50 changes: 38 additions & 12 deletions pop-api/examples/fungibles/tests.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -27,13 +27,18 @@ fn new_constructor_works(mut session: Session) -> Result<(), Box<dyn std::error:
&mut session,
BundleProvider::local()?,
TOKEN_ID,
ALICE,
TOKEN_MIN_BALANCE,
)?;
// Token exists after the deployment.
assert!(session.sandbox().asset_exists(&TOKEN_ID));
let contract = account_id_from_slice(contract.as_ref());
// Successfully emit event.
let expected = Created { id: TOKEN_ID, creator: contract, admin: contract }.encode();
let expected = Created {
id: TOKEN_ID,
creator: account_id_from_slice(contract.as_ref()),
admin: account_id_from_slice(ALICE.as_ref()),
}
.encode();
assert_eq!(last_contract_event(&session).unwrap(), expected.as_slice());
Ok(())
}
Expand Down Expand Up @@ -74,6 +79,7 @@ fn balance_of_works(mut session: Session) -> Result<(), Box<dyn std::error::Erro
&mut session,
BundleProvider::local()?,
TOKEN_ID,
ALICE,
TOKEN_MIN_BALANCE,
)?;
// Mint tokens.
Expand All @@ -93,6 +99,7 @@ fn mint_works(mut session: Session) -> Result<(), Box<dyn std::error::Error>> {
&mut session,
BundleProvider::local()?,
TOKEN_ID,
ALICE,
TOKEN_MIN_BALANCE,
)?;
// Mint tokens.
Expand All @@ -117,6 +124,7 @@ fn mint_zero_value_works(mut session: Session) -> Result<(), Box<dyn std::error:
&mut session,
BundleProvider::local()?,
TOKEN_ID,
ALICE,
TOKEN_MIN_BALANCE,
)?;
// Mint tokens.
Expand All @@ -137,6 +145,7 @@ fn burn_works(mut session: Session) -> Result<(), Box<dyn std::error::Error>> {
&mut session,
BundleProvider::local()?,
TOKEN_ID,
ALICE,
TOKEN_MIN_BALANCE,
)?;
// Mint tokens.
Expand All @@ -162,6 +171,7 @@ fn burn_zero_value_works(mut session: Session) -> Result<(), Box<dyn std::error:
&mut session,
BundleProvider::local()?,
TOKEN_ID,
ALICE,
TOKEN_MIN_BALANCE,
)?;
// Burn tokens.
Expand All @@ -184,6 +194,7 @@ fn burn_fails_with_insufficient_balance(
&mut session,
BundleProvider::local()?,
TOKEN_ID,
ALICE,
TOKEN_MIN_BALANCE,
)?;
// Mint tokens.
Expand All @@ -207,6 +218,7 @@ fn transfer_works(mut session: Session) -> Result<(), Box<dyn std::error::Error>
&mut session,
BundleProvider::local()?,
TOKEN_ID,
ALICE,
TOKEN_MIN_BALANCE,
)?;
// Mint tokens.
Expand Down Expand Up @@ -239,6 +251,7 @@ fn transfer_zero_value_works(mut session: Session) -> Result<(), Box<dyn std::er
&mut session,
BundleProvider::local()?,
TOKEN_ID,
ALICE,
TOKEN_MIN_BALANCE,
)?;
assert_ok!(transfer(&mut session, ALICE, 0));
Expand All @@ -257,6 +270,7 @@ fn transfer_fails_with_insufficient_balance(
&mut session,
BundleProvider::local()?,
TOKEN_ID,
ALICE,
TOKEN_MIN_BALANCE,
)?;
// Mint tokens.
Expand All @@ -283,6 +297,7 @@ fn approve_works(mut session: Session) -> Result<(), Box<dyn std::error::Error>>
&mut session,
BundleProvider::local()?,
TOKEN_ID,
ALICE,
TOKEN_MIN_BALANCE,
)?;

Expand Down Expand Up @@ -312,6 +327,7 @@ fn increase_allowance_works(mut session: Session) -> Result<(), Box<dyn std::err
&mut session,
BundleProvider::local()?,
TOKEN_ID,
ALICE,
TOKEN_MIN_BALANCE,
)?;

Expand Down Expand Up @@ -342,6 +358,7 @@ fn decrease_allowance_works(mut session: Session) -> Result<(), Box<dyn std::err
&mut session,
BundleProvider::local()?,
TOKEN_ID,
ALICE,
TOKEN_MIN_BALANCE,
)?;

Expand Down Expand Up @@ -372,26 +389,35 @@ fn transfer_from_works(mut session: Session) -> Result<(), Box<dyn std::error::E
&mut session,
BundleProvider::local()?,
TOKEN_ID,
ALICE,
TOKEN_MIN_BALANCE,
)?;

const AMOUNT: Balance = 12_000;
const AMOUNT: Balance = TOKEN_MIN_BALANCE * 4;
const TRANSFERRED: Balance = TOKEN_MIN_BALANCE * 2;
// Mint tokens.
assert_ok!(mint(&mut session, contract.clone(), AMOUNT));
// Successfully transfer from `owner`.
// Successfully transfer from `contract` by `ALICE`.
session.set_actor(contract.clone());
assert_ok!(approve(&mut session, ALICE, AMOUNT / 2));
assert_eq!(allowance(&mut session, contract.clone(), ALICE), AMOUNT / 2);
assert_ok!(approve(&mut session, ALICE, AMOUNT));
assert_eq!(allowance(&mut session, contract.clone(), ALICE), AMOUNT);
assert_eq!(balance_of(&mut session, ALICE), 0);
assert_eq!(balance_of(&mut session, BOB), 0);
assert_eq!(balance_of(&mut session, contract.clone()), AMOUNT);

session.set_actor(ALICE);
assert_ok!(transfer_from(&mut session, contract, BOB, AMOUNT / 2));
assert_ok!(transfer_from(&mut session, contract.clone(), BOB, TRANSFERRED));
// Successfully emit event.
let expected = Transfer {
from: Some(account_id_from_slice(ALICE.as_ref())),
to: Some(account_id_from_slice(BOB.as_ref())),
value: AMOUNT / 4,
let expected = Approval {
owner: account_id_from_slice(contract.clone().as_ref()),
spender: account_id_from_slice(ALICE.as_ref()),
value: TRANSFERRED,
}
.encode();
assert_eq!(last_contract_event(&session).unwrap(), expected.as_slice());
// assert_eq!(last_contract_event(&session).unwrap(), expected.as_slice());
assert_eq!(allowance(&mut session, contract.clone(), ALICE), AMOUNT - TRANSFERRED);
assert_eq!(balance_of(&mut session, ALICE), 0);
assert_eq!(balance_of(&mut session, BOB), TRANSFERRED);
assert_eq!(balance_of(&mut session, contract), AMOUNT - TRANSFERRED);
Ok(())
}
3 changes: 2 additions & 1 deletion pop-api/examples/fungibles/utils.rs
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Expand Up @@ -76,12 +76,13 @@ pub(super) fn deploy_with_new_constructor(
session: &mut Session<Sandbox>,
bundle: ContractBundle,
id: TokenId,
admin: AccountId32,
min_balance: Balance,
) -> Result<AccountId32, SessionError> {
session.deploy_bundle(
bundle,
"new",
&[id.to_string(), min_balance.to_string()],
&[id.to_string(), admin.to_string(), min_balance.to_string()],
NO_SALT,
Some(INIT_VALUE),
)
Expand Down
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