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PoC Fuzzing Assets #394

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3d9df7d
Fuzzing Assets PoC
KitHat Dec 30, 2024
38b1199
add lock
KitHat Dec 30, 2024
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3 changes: 3 additions & 0 deletions evm-template/Cargo.lock
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4 changes: 4 additions & 0 deletions evm-template/template-fuzzer/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@ sp-consensus-aura = { workspace = true }
sp-runtime = { workspace = true }
sp-state-machine = { workspace = true }

pallet-assets = { workspace = true }
pallet-balances = { workspace = true }
pallet-collator-selection = { workspace = true }
pallet-multisig = { workspace = true }
Expand All @@ -43,6 +44,9 @@ cumulus-primitives-core = { workspace = true }
cumulus-primitives-parachain-inherent = { workspace = true }
cumulus-test-relay-sproof-builder = { workspace = true }

clap = { workspace = true }
fp-account = {workspace = true}

[features]
default = [ "std", "try-runtime" ]
std = [
Expand Down
166 changes: 166 additions & 0 deletions evm-template/template-fuzzer/src/assets.rs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,166 @@
use evm_runtime_template::{AccountId, RuntimeCall};
use fp_account::AccountId20;
use parity_scale_codec::Compact;

use crate::ExtrinsicData;

pub fn generate_extrinsics_stream(data: &mut [u8]) -> ExtrinsicData {
let mut res = vec![];
let (mut ptr, mut call) = generate_call(data);
while let Some(generated_call) = call {
res.push(generated_call);
(ptr, call) = generate_call(ptr);
}
res
}

fn generate_call(data: &[u8]) -> (&[u8], Option<(u8, u8, RuntimeCall)>) {
// RuntimeCall
if (data.len() < 3) {
return (data, None);
}
let lapse = data[0];
let origin = data[1];
let call_id = data[2];
let mut next_ptr = &data[3..];

let call = match call_id % 7 {
0 => {
if next_ptr.len() < 52 {
return (next_ptr, None);
}
let mut data: [u8; 16] = [0u8; 16];
data.copy_from_slice(&next_ptr[0..16]);
let id = Compact(u128::from_le_bytes(data));
let mut data_20: [u8; 20] = [0u8; 20];
data_20.copy_from_slice(&next_ptr[16..36]);
let beneficiary = AccountId20::from(data_20);
data.copy_from_slice(&next_ptr[36..52]);
let amount = u128::from_le_bytes(data);
next_ptr = &next_ptr[52..];
RuntimeCall::Assets (
pallet_assets::Call::mint {
id,
beneficiary,
amount
}
)
},
1 => {
if next_ptr.len() < 52 {
return (next_ptr, None);
}
let mut data: [u8; 16] = [0u8; 16];
data.copy_from_slice(&next_ptr[0..16]);
let id = Compact(u128::from_le_bytes(data));
let mut data_20: [u8; 20] = [0u8; 20];
data_20.copy_from_slice(&next_ptr[16..36]);
let who = AccountId20::from(data_20);
data.copy_from_slice(&next_ptr[36..52]);
let amount = u128::from_le_bytes(data);
next_ptr = &next_ptr[52..];
RuntimeCall::Assets (
pallet_assets::Call::burn {
id,
who,
amount
}
)
},
2 => {
if next_ptr.len() < 52 {
return (next_ptr, None);
}
let mut data: [u8; 16] = [0u8; 16];
data.copy_from_slice(&next_ptr[0..16]);
let id = Compact(u128::from_le_bytes(data));
let mut data_20: [u8; 20] = [0u8; 20];
data_20.copy_from_slice(&next_ptr[16..36]);
let target = AccountId20::from(data_20);
data.copy_from_slice(&next_ptr[36..52]);
let amount = u128::from_le_bytes(data);
next_ptr = &next_ptr[52..];
RuntimeCall::Assets (
pallet_assets::Call::transfer {
id,
target,
amount
}
)
},
3 => {
if next_ptr.len() < 52 {
return (next_ptr, None);
}
let mut data: [u8; 16] = [0u8; 16];
data.copy_from_slice(&next_ptr[0..16]);
let id = Compact(u128::from_le_bytes(data));
let mut data_20: [u8; 20] = [0u8; 20];
data_20.copy_from_slice(&next_ptr[16..36]);
let target = AccountId20::from(data_20);
data.copy_from_slice(&next_ptr[36..52]);
let amount = u128::from_le_bytes(data);
next_ptr = &next_ptr[52..];
RuntimeCall::Assets (
pallet_assets::Call::transfer_keep_alive {
id,
target,
amount
}
)
},
4 => {
if next_ptr.len() < 52 {
return (next_ptr, None);
}
let mut data: [u8; 16] = [0u8; 16];
data.copy_from_slice(&next_ptr[0..16]);
let id = Compact(u128::from_le_bytes(data));
let mut data_20: [u8; 20] = [0u8; 20];
data_20.copy_from_slice(&next_ptr[16..36]);
let delegate = AccountId20::from(data_20);
data.copy_from_slice(&next_ptr[36..52]);
let amount = u128::from_le_bytes(data);
next_ptr = &next_ptr[52..];
RuntimeCall::Assets (
pallet_assets::Call::approve_transfer { id, delegate, amount }
)
},
5 => {
if next_ptr.len() < 72 {
return (next_ptr, None);
}
let mut data: [u8; 16] = [0u8; 16];
data.copy_from_slice(&next_ptr[0..16]);
let id = Compact(u128::from_le_bytes(data));
let mut data_20: [u8; 20] = [0u8; 20];
data_20.copy_from_slice(&next_ptr[16..36]);
let owner = AccountId20::from(data_20);
data_20.copy_from_slice(&next_ptr[36..56]);
let destination = AccountId20::from(data_20);
data.copy_from_slice(&next_ptr[56..72]);
let amount = u128::from_le_bytes(data);
next_ptr = &next_ptr[72..];
RuntimeCall::Assets (
pallet_assets::Call::transfer_approved { id, owner, destination, amount }
)
},
6 => {
if next_ptr.len() < 32 {
return (next_ptr, None);
}
let mut data: [u8; 16] = [0u8; 16];
data.copy_from_slice(&next_ptr[0..16]);
let id = Compact(u128::from_le_bytes(data));
data.copy_from_slice(&next_ptr[16..32]);
let min_balance = u128::from_le_bytes(data);
next_ptr = &next_ptr[32..];
RuntimeCall::Assets (
pallet_assets::Call::set_min_balance { id, min_balance }
)
}
_ => unreachable!()
};

(&next_ptr, Some((lapse, origin, call)))
}
109 changes: 29 additions & 80 deletions evm-template/template-fuzzer/src/main.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@ use std::{
time::{Duration, Instant},
};

use clap::Args;
// Local Imports
use evm_runtime_template::{
constants::SLOT_DURATION, AccountId, AllPalletsWithSystem, Balance, Balances, EVMChainIdConfig,
Expand All @@ -26,6 +27,11 @@ use sp_runtime::{
};
use sp_state_machine::BasicExternalities;

mod random;
mod assets;

type ExtrinsicData = Vec<(/* lapse */ u8, /* origin */ u8, RuntimeCall)>;

fn generate_genesis(accounts: &[AccountId]) -> Storage {
use evm_runtime_template::{BalancesConfig, RuntimeGenesisConfig};
#[cfg(not(feature = "tanssi"))]
Expand Down Expand Up @@ -79,13 +85,16 @@ fn generate_genesis(accounts: &[AccountId]) -> Storage {
.unwrap()
}

fn process_input(accounts: &[AccountId], genesis: &Storage, data: &[u8]) {
let mut data = data;
fn process_input(
accounts: &[AccountId],
genesis: &Storage,
data: &mut [u8],
generate_extrinsics: impl Fn(&mut [u8]) -> ExtrinsicData,
call_filter: impl Fn(&RuntimeCall, usize) -> bool,
) {
// We build the list of extrinsics we will execute
let extrinsics: Vec<(/* lapse */ u8, /* origin */ u8, RuntimeCall)> =
iter::from_fn(|| DecodeLimit::decode_with_depth_limit(64, &mut data).ok())
.filter(|(_, _, x)| !matches!(x, RuntimeCall::System(_)))
.collect();
let extrinsics: ExtrinsicData = generate_extrinsics(data);

if extrinsics.is_empty() {
return;
}
Expand All @@ -101,7 +110,7 @@ fn process_input(accounts: &[AccountId], genesis: &Storage, data: &[u8]) {

for (lapse, origin, extrinsic) in extrinsics {
let origin_no = origin as usize % accounts.len();
if !recursive_call_filter(&extrinsic, origin_no) {
if !call_filter(&extrinsic, origin_no) {
continue;
}
if lapse > 0 {
Expand Down Expand Up @@ -209,77 +218,6 @@ fn initialize_block(block: u32) {
// Calls that need to be called before each block starts (init_calls) go here
}

fn recursive_call_filter(call: &RuntimeCall, origin: usize) -> bool {
match call {
//recursion
RuntimeCall::Sudo(
pallet_sudo::Call::sudo { call }
| pallet_sudo::Call::sudo_unchecked_weight { call, weight: _ },
) if origin == 0 => recursive_call_filter(call, origin),
RuntimeCall::Utility(
pallet_utility::Call::with_weight { call, weight: _ }
| pallet_utility::Call::dispatch_as { as_origin: _, call }
| pallet_utility::Call::as_derivative { index: _, call },
) => recursive_call_filter(call, origin),
RuntimeCall::Utility(
pallet_utility::Call::force_batch { calls }
| pallet_utility::Call::batch { calls }
| pallet_utility::Call::batch_all { calls },
) => calls.iter().map(|call| recursive_call_filter(call, origin)).all(|e| e),
RuntimeCall::Scheduler(
pallet_scheduler::Call::schedule_named_after {
id: _,
after: _,
maybe_periodic: _,
priority: _,
call,
}
| pallet_scheduler::Call::schedule { when: _, maybe_periodic: _, priority: _, call }
| pallet_scheduler::Call::schedule_named {
when: _,
id: _,
maybe_periodic: _,
priority: _,
call,
}
| pallet_scheduler::Call::schedule_after {
after: _,
maybe_periodic: _,
priority: _,
call,
},
) => recursive_call_filter(call, origin),
RuntimeCall::Multisig(
pallet_multisig::Call::as_multi_threshold_1 { other_signatories: _, call }
| pallet_multisig::Call::as_multi {
threshold: _,
other_signatories: _,
maybe_timepoint: _,
call,
max_weight: _,
},
) => recursive_call_filter(call, origin),
RuntimeCall::Whitelist(
pallet_whitelist::Call::dispatch_whitelisted_call_with_preimage { call },
) => recursive_call_filter(call, origin),

// restrictions
RuntimeCall::Sudo(_) if origin != 0 => false,
RuntimeCall::System(
frame_system::Call::set_code { .. } | frame_system::Call::kill_prefix { .. },
) => false,
#[cfg(not(feature = "tanssi"))]
RuntimeCall::CollatorSelection(
pallet_collator_selection::Call::set_desired_candidates { max },
) =>
*max < <<Runtime as pallet_collator_selection::Config>::MaxCandidates as Get<u32>>::get(
),
RuntimeCall::Balances(pallet_balances::Call::force_adjust_total_issuance { .. }) => false,

_ => true,
}
}

fn finalize_block(elapsed: Duration) {
println!("\n time spent: {elapsed:?}");
assert!(elapsed.as_secs() <= 2, "block execution took too much time");
Expand Down Expand Up @@ -317,10 +255,21 @@ fn check_invariants(block: u32, initial_total_issuance: Balance) {
}

fn main() {
// let args = cli::Args::parse();
let accounts: Vec<AccountId> = (0..5).map(|i| [i; 32].into()).collect();
let genesis = generate_genesis(&accounts);

// if args.random {
// (random::generate_extrinsic_stream, random::recursive_call_filter)
// } else if args.assets {

// } else {
// println!("Mode was not specified. Halting");
// return;
// };

ziggy::fuzz!(|data: &[u8]| {
process_input(&accounts, &genesis, data);
let mut data = data.to_vec();
process_input(&accounts, &genesis, &mut data, assets::generate_extrinsics_stream, |_, _| true);
});
}
}
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