feat: Implicit account creation

chain/chain/src/test_utils.rs

@@ -462,6 +462,7 @@ impl RuntimeAdapter for KeyValueRuntime {
         _state_update: Option<StateRoot>,
         _transaction: &SignedTransaction,
         _verify_signature: bool,
+        _current_protocol_version: ProtocolVersion,
     ) -> Result<Option<InvalidTxError>, Error> {
         Ok(None)
     }
@@ -474,6 +475,7 @@ impl RuntimeAdapter for KeyValueRuntime {
         _state_root: StateRoot,
         transactions: &mut dyn PoolIterator,
         _chain_validate: &mut dyn FnMut(&SignedTransaction) -> bool,
+        _current_protocol_version: ProtocolVersion,
     ) -> Result<Vec<SignedTransaction>, Error> {
         let mut res = vec![];
         while let Some(iter) = transactions.next() {

chain/chain/src/types.rs

@@ -255,6 +255,7 @@ pub trait RuntimeAdapter: Send + Sync {
         state_root: Option<StateRoot>,
         transaction: &SignedTransaction,
         verify_signature: bool,
+        current_protocol_version: ProtocolVersion,
     ) -> Result<Option<InvalidTxError>, Error>;
 
     /// Returns an ordered list of valid transactions from the pool up the given limits.
@@ -272,6 +273,7 @@ pub trait RuntimeAdapter: Send + Sync {
         state_root: StateRoot,
         pool_iterator: &mut dyn PoolIterator,
         chain_validate: &mut dyn FnMut(&SignedTransaction) -> bool,
+        current_protocol_version: ProtocolVersion,
     ) -> Result<Vec<SignedTransaction>, Error>;
 
     /// Verify validator signature for the given epoch.

chain/client/src/client.rs

@@ -492,7 +492,7 @@ impl Client {
             .clone();
 
         let prev_block_header = self.chain.get_block_header(&prev_block_hash)?.clone();
-        let transactions = self.prepare_transactions(shard_id, &chunk_extra, &prev_block_header);
+        let transactions = self.prepare_transactions(shard_id, &chunk_extra, &prev_block_header)?;
         let num_filtered_transactions = transactions.len();
         let (tx_root, _) = merklize(&transactions);
         let ReceiptResponse(_, outgoing_receipts) = self.chain.get_outgoing_receipts_for_shard(
@@ -556,36 +556,40 @@ impl Client {
         shard_id: ShardId,
         chunk_extra: &ChunkExtra,
         prev_block_header: &BlockHeader,
-    ) -> Vec<SignedTransaction> {
+    ) -> Result<Vec<SignedTransaction>, Error> {
         let Self { chain, shards_mgr, runtime_adapter, .. } = self;
+
+        let next_epoch_id =
+            runtime_adapter.get_epoch_id_from_prev_block(&prev_block_header.hash())?;
+        let protocol_version = runtime_adapter.get_epoch_protocol_version(&next_epoch_id)?;
+
         let transactions = if let Some(mut iter) = shards_mgr.get_pool_iterator(shard_id) {
             let transaction_validity_period = chain.transaction_validity_period;
-            runtime_adapter
-                .prepare_transactions(
-                    prev_block_header.gas_price(),
-                    chunk_extra.gas_limit,
-                    shard_id,
-                    chunk_extra.state_root.clone(),
-                    &mut iter,
-                    &mut |tx: &SignedTransaction| -> bool {
-                        chain
-                            .mut_store()
-                            .check_transaction_validity_period(
-                                &prev_block_header,
-                                &tx.transaction.block_hash,
-                                transaction_validity_period,
-                            )
-                            .is_ok()
-                    },
-                )
-                .expect("no StorageError please")
+            runtime_adapter.prepare_transactions(
+                prev_block_header.gas_price(),
+                chunk_extra.gas_limit,
+                shard_id,
+                chunk_extra.state_root.clone(),
+                &mut iter,
+                &mut |tx: &SignedTransaction| -> bool {
+                    chain
+                        .mut_store()
+                        .check_transaction_validity_period(
+                            &prev_block_header,
+                            &tx.transaction.block_hash,
+                            transaction_validity_period,
+                        )
+                        .is_ok()
+                },
+                protocol_version,
+            )?
         } else {
             vec![]
         };
         // Reintroduce valid transactions back to the pool. They will be removed when the chunk is
         // included into the block.
         shards_mgr.reintroduce_transactions(shard_id, &transactions);
-        transactions
+        Ok(transactions)
     }
 
     pub fn send_challenges(&mut self, challenges: Arc<RwLock<Vec<ChallengeBody>>>) {
@@ -1225,8 +1229,12 @@ impl Client {
         let gas_price = cur_block_header.gas_price();
         let epoch_id = self.runtime_adapter.get_epoch_id_from_prev_block(&head.last_block_hash)?;
 
-        if let Some(err) =
-            self.runtime_adapter.validate_tx(gas_price, None, &tx, true).expect("no storage errors")
+        let protocol_version = self.runtime_adapter.get_epoch_protocol_version(&epoch_id)?;
+
+        if let Some(err) = self
+            .runtime_adapter
+            .validate_tx(gas_price, None, &tx, true, protocol_version)
+            .expect("no storage errors")
         {
             debug!(target: "client", "Invalid tx during basic validation: {:?}", err);
             return Ok(NetworkClientResponses::InvalidTx(err));
@@ -1252,7 +1260,7 @@ impl Client {
             };
             if let Some(err) = self
                 .runtime_adapter
-                .validate_tx(gas_price, Some(state_root), &tx, false)
+                .validate_tx(gas_price, Some(state_root), &tx, false, protocol_version)
                 .expect("no storage errors")
             {
                 debug!(target: "client", "Invalid tx: {:?}", err);

chain/jsonrpc/res/rpc_errors_schema.json

@@ -452,7 +452,8 @@
         "TriesToStake",
         "InsufficientStake",
         "FunctionCallError",
-        "NewReceiptValidationError"
+        "NewReceiptValidationError",
+        "OnlyImplicitAccountCreationAllowed"
       ],
       "props": {
         "index": ""
@@ -718,6 +719,13 @@
         "signer_id": ""
       }
     },
+    "OnlyImplicitAccountCreationAllowed": {
+      "name": "OnlyImplicitAccountCreationAllowed",
+      "subtypes": [],
+      "props": {
+        "account_id": ""
+      }
+    },
     "ReceiptValidationError": {
       "name": "ReceiptValidationError",
       "subtypes": [

core/crypto/src/test_utils.rs

@@ -7,7 +7,7 @@ use crate::{InMemorySigner, Signature};
 
 fn ed25519_key_pair_from_seed(seed: &str) -> ed25519_dalek::Keypair {
     let seed_bytes = seed.as_bytes();
-    let len = seed_bytes.len();
+    let len = std::cmp::min(ed25519_dalek::SECRET_KEY_LENGTH, seed_bytes.len());
     let mut seed: [u8; ed25519_dalek::SECRET_KEY_LENGTH] = [b' '; ed25519_dalek::SECRET_KEY_LENGTH];
     seed[..len].copy_from_slice(&seed_bytes[..len]);
     let secret = ed25519_dalek::SecretKey::from_bytes(&seed).unwrap();
@@ -17,7 +17,7 @@ fn ed25519_key_pair_from_seed(seed: &str) -> ed25519_dalek::Keypair {
 
 fn secp256k1_secret_key_from_seed(seed: &str) -> secp256k1::key::SecretKey {
     let seed_bytes = seed.as_bytes();
-    let len = seed_bytes.len();
+    let len = std::cmp::min(32, seed_bytes.len());
     let mut seed: [u8; 32] = [b' '; 32];
     seed[..len].copy_from_slice(&seed_bytes[..len]);
     let mut rng: StdRng = rand::SeedableRng::from_seed(seed);

core/primitives/src/errors.rs

@@ -384,6 +384,9 @@ pub enum ActionErrorKind {
     /// Error occurs when a new `ActionReceipt` created by the `FunctionCall` action fails
     /// receipt validation.
     NewReceiptValidationError(ReceiptValidationError),
+    /// Error occurs when a `CreateAccount` action is called on hex-characters account of length 64.
+    /// See implicit account creation NEP: https://github.com/nearprotocol/NEPs/pull/71
+    OnlyImplicitAccountCreationAllowed { account_id: AccountId },
 }
 
 impl From<ActionErrorKind> for ActionError {
@@ -670,7 +673,8 @@ impl Display for ActionErrorKind {
             ActionErrorKind::NewReceiptValidationError(e) => {
                 write!(f, "An new action receipt created during a FunctionCall is not valid: {}", e)
             }
-            ActionErrorKind::InsufficientStake { account_id, stake, minimum_stake } => write!(f, "Account {} tries to stake {} but minimum required stake is {}", account_id, stake, minimum_stake)
+            ActionErrorKind::InsufficientStake { account_id, stake, minimum_stake } => write!(f, "Account {} tries to stake {} but minimum required stake is {}", account_id, stake, minimum_stake),
+            ActionErrorKind::OnlyImplicitAccountCreationAllowed { account_id } => write!(f, "CreateAccount action is called on hex-characters account of length 64 {}", account_id)
         }
     }
 }

core/primitives/src/version.rs

@@ -18,7 +18,7 @@ pub const DB_VERSION: DbVersion = 8;
 pub type ProtocolVersion = u32;
 
 /// Current latest version of the protocol.
-pub const PROTOCOL_VERSION: ProtocolVersion = 34;
+pub const PROTOCOL_VERSION: ProtocolVersion = 35;
 /// Oldest supported version by this client.
 pub const OLDEST_BACKWARD_COMPATIBLE_PROTOCOL_VERSION: ProtocolVersion = 29;
 
@@ -31,3 +31,6 @@ pub const MIN_GAS_PRICE_NEP_92_FIX: Balance = 100_000_000;
 pub const MIN_PROTOCOL_VERSION_NEP_92_FIX: ProtocolVersion = 32;
 
 pub const CORRECT_RANDOM_VALUE_PROTOCOL_VERSION: ProtocolVersion = 33;
+
+/// See [NEP 71](https://github.com/nearprotocol/NEPs/pull/71)
+pub const IMPLICIT_ACCOUNT_CREATION_PROTOCOL_VERSION: ProtocolVersion = 35;

neard/res/genesis_config.json

@@ -1,5 +1,5 @@
 {
-  "protocol_version": 34,
+  "protocol_version": 35,
   "genesis_time": "1970-01-01T00:00:00.000000000Z",
   "chain_id": "sample",
   "genesis_height": 0,
@@ -236,4 +236,4 @@
   "fishermen_threshold": "10000000000000000000000000",
   "minimum_stake_divisor": 10,
   "records": []
-}
+}