From c5d719b54671a19eec0944bb6ec5b3f0e5c56b24 Mon Sep 17 00:00:00 2001 From: N-thnI Date: Thu, 25 Jun 2026 12:22:28 +0100 Subject: [PATCH 1/2] feat(creator-keys): add transfer entrypoint and enforce unique holder count state invariants --- creator-keys/src/lib.rs | 77 ++ creator-keys/src/test.rs | 85 ++ ...r_count_decrements_on_full_transfer.1.json | 830 ++++++++++++++++ ...r_count_increments_on_first_receive.1.json | 830 ++++++++++++++++ ...count_unchanged_on_partial_transfer.1.json | 892 ++++++++++++++++++ 5 files changed, 2714 insertions(+) create mode 100644 creator-keys/test_snapshots/test/test_holder_count_decrements_on_full_transfer.1.json create mode 100644 creator-keys/test_snapshots/test/test_holder_count_increments_on_first_receive.1.json create mode 100644 creator-keys/test_snapshots/test/test_holder_count_unchanged_on_partial_transfer.1.json diff --git a/creator-keys/src/lib.rs b/creator-keys/src/lib.rs index 1a964a5..2897d86 100644 --- a/creator-keys/src/lib.rs +++ b/creator-keys/src/lib.rs @@ -975,6 +975,83 @@ impl CreatorKeysContract { Ok(profile.supply) } + pub fn transfer_key( + env: Env, + creator: Address, + from: Address, + to: Address, + amount: u32, + ) -> Result<(), ContractError> { + from.require_auth(); + assert_not_paused(&env)?; + + if amount == 0 { + return Err(ContractError::NotPositiveAmount); + } + + let mut profile: CreatorProfile = read_registered_creator_profile(&env, &creator)?; + + if from == to { + let balance_key = constants::storage::key_balance(&creator, &from); + let current_balance: u32 = env.storage().persistent().get(&balance_key).unwrap_or(0); + if current_balance < amount { + return Err(ContractError::InsufficientBalance); + } + + settle_holder_dividends(&env, &creator, &from, current_balance)?; + return Ok(()); + } + + let from_balance_key = constants::storage::key_balance(&creator, &from); + let to_balance_key = constants::storage::key_balance(&creator, &to); + + let from_balance: u32 = env + .storage() + .persistent() + .get(&from_balance_key) + .unwrap_or(0); + if from_balance < amount { + return Err(ContractError::InsufficientBalance); + } + + let to_balance: u32 = env.storage().persistent().get(&to_balance_key).unwrap_or(0); + + // Settle both sides before mutating balances so pending dividends reflect + // the pre-transfer ownership distribution. + settle_holder_dividends(&env, &creator, &from, from_balance)?; + settle_holder_dividends(&env, &creator, &to, to_balance)?; + + let new_from_balance = from_balance + .checked_sub(amount) + .ok_or(ContractError::SellUnderflow)?; + let new_to_balance = to_balance + .checked_add(amount) + .ok_or(ContractError::Overflow)?; + + if new_from_balance == 0 { + profile.holder_count = profile + .holder_count + .checked_sub(1) + .ok_or(ContractError::SellUnderflow)?; + } + + if to_balance == 0 { + profile.holder_count = profile + .holder_count + .checked_add(1) + .ok_or(ContractError::Overflow)?; + } + + let key = constants::storage::creator(&creator); + env.storage().persistent().set(&key, &profile); + env.storage() + .persistent() + .set(&from_balance_key, &new_from_balance); + env.storage().persistent().set(&to_balance_key, &new_to_balance); + + Ok(()) + } + /// Halts all state-changing operations (buy, sell, register_creator). /// /// Only the protocol admin may call this. Emits a `ProtocolPaused` event. diff --git a/creator-keys/src/test.rs b/creator-keys/src/test.rs index f6c2307..6010d72 100644 --- a/creator-keys/src/test.rs +++ b/creator-keys/src/test.rs @@ -264,6 +264,91 @@ fn test_get_creator_holder_count_counts_unique_holders() { assert_eq!(second_read, 2); } +#[test] +fn test_holder_count_decrements_on_full_transfer() { + let env = Env::default(); + env.mock_all_auths(); + let contract_id = env.register(CreatorKeysContract, ()); + let client = CreatorKeysContractClient::new(&env, &contract_id); + + let admin = Address::generate(&env); + client.set_key_price(&admin, &100); + + let creator = Address::generate(&env); + let handle = String::from_str(&env, "alice"); + client.register_creator(&creator, &handle); + + let sender = Address::generate(&env); + let recipient = Address::generate(&env); + + client.buy_key(&creator, &sender, &100, &None); + client.buy_key(&creator, &recipient, &100, &None); + + client.transfer_key(&creator, &sender, &recipient, &1); + + let profile = client.get_creator(&creator); + assert_eq!(profile.holder_count, 1); + assert_eq!(client.get_key_balance(&creator, &sender), 0); + assert_eq!(client.get_key_balance(&creator, &recipient), 2); +} + +#[test] +fn test_holder_count_increments_on_first_receive() { + let env = Env::default(); + env.mock_all_auths(); + let contract_id = env.register(CreatorKeysContract, ()); + let client = CreatorKeysContractClient::new(&env, &contract_id); + + let admin = Address::generate(&env); + client.set_key_price(&admin, &100); + + let creator = Address::generate(&env); + let handle = String::from_str(&env, "alice"); + client.register_creator(&creator, &handle); + + let sender = Address::generate(&env); + let recipient = Address::generate(&env); + + client.buy_key(&creator, &sender, &100, &None); + client.buy_key(&creator, &sender, &100, &None); + + client.transfer_key(&creator, &sender, &recipient, &1); + + let profile = client.get_creator(&creator); + assert_eq!(profile.holder_count, 2); + assert_eq!(client.get_key_balance(&creator, &sender), 1); + assert_eq!(client.get_key_balance(&creator, &recipient), 1); +} + +#[test] +fn test_holder_count_unchanged_on_partial_transfer() { + let env = Env::default(); + env.mock_all_auths(); + let contract_id = env.register(CreatorKeysContract, ()); + let client = CreatorKeysContractClient::new(&env, &contract_id); + + let admin = Address::generate(&env); + client.set_key_price(&admin, &100); + + let creator = Address::generate(&env); + let handle = String::from_str(&env, "alice"); + client.register_creator(&creator, &handle); + + let sender = Address::generate(&env); + let recipient = Address::generate(&env); + + client.buy_key(&creator, &sender, &100, &None); + client.buy_key(&creator, &sender, &100, &None); + client.buy_key(&creator, &recipient, &100, &None); + + client.transfer_key(&creator, &sender, &recipient, &1); + + let profile = client.get_creator(&creator); + assert_eq!(profile.holder_count, 2); + assert_eq!(client.get_key_balance(&creator, &sender), 1); + assert_eq!(client.get_key_balance(&creator, &recipient), 2); +} + #[test] fn test_get_creator_fails_if_not_registered() { let env = Env::default(); diff --git a/creator-keys/test_snapshots/test/test_holder_count_decrements_on_full_transfer.1.json b/creator-keys/test_snapshots/test/test_holder_count_decrements_on_full_transfer.1.json new file mode 100644 index 0000000..87c5286 --- /dev/null +++ b/creator-keys/test_snapshots/test/test_holder_count_decrements_on_full_transfer.1.json @@ -0,0 +1,830 @@ +{ + "generators": { + "address": 5, + "nonce": 0 + }, + "auth": [ + [], + [ + [ + "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4", + { + "function": { + "contract_fn": { + "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM", + "function_name": "set_key_price", + "args": [ + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4" + }, + { + "i128": { + "hi": 0, + "lo": 100 + } + } + ] + } + }, + "sub_invocations": [] + } + ] + ], + [ + [ + "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M", + { + "function": { + "contract_fn": { + "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM", + "function_name": "register_creator", + "args": [ + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M" + }, + { + "string": "alice" + } + ] + } + }, + "sub_invocations": [] + } + ] + ], + [ + [ + "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4", + { + "function": { + "contract_fn": { + "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM", + "function_name": "buy_key", + "args": [ + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M" + }, + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4" + }, + { + "i128": { + "hi": 0, + "lo": 100 + } + }, + "void" + ] + } + }, + "sub_invocations": [] + } + ] + ], + [ + [ + "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM", + { + "function": { + "contract_fn": { + "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM", + "function_name": "buy_key", + "args": [ + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M" + }, + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM" + }, + { + "i128": { + "hi": 0, + "lo": 100 + } + }, + "void" + ] + } + }, + "sub_invocations": [] + } + ] + ], + [ + [ + "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4", + { + "function": { + "contract_fn": { + "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM", + "function_name": "transfer_key", + "args": [ + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M" + }, + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4" + }, + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM" + }, + { + "u32": 1 + } + ] + } + }, + "sub_invocations": [] + } + ] + ], + [], + [], + [] + ], + "ledger": { + "protocol_version": 22, + "sequence_number": 0, + "timestamp": 0, + "network_id": "0000000000000000000000000000000000000000000000000000000000000000", + "base_reserve": 0, + "min_persistent_entry_ttl": 4096, + "min_temp_entry_ttl": 16, + "max_entry_ttl": 6312000, + "ledger_entries": [ + [ + { + "contract_data": { + "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM", + "key": { + "vec": [ + { + "symbol": "Creator" + }, + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M" + } + ] + }, + "durability": "persistent" + } + }, + [ + { + "last_modified_ledger_seq": 0, + "data": { + "contract_data": { + "ext": "v0", + "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM", + "key": { + "vec": [ + { + "symbol": "Creator" + }, + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M" + } + ] + }, + "durability": "persistent", + "val": { + "map": [ + { + "key": { + "symbol": "creator" + }, + "val": { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M" + } + }, + { + "key": { + "symbol": "fee_recipient" + }, + "val": { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M" + } + }, + { + "key": { + "symbol": "handle" + }, + "val": { + "string": "alice" + } + }, + { + "key": { + "symbol": "holder_count" + }, + "val": { + "u32": 1 + } + }, + { + "key": { + "symbol": "registered_at" + }, + "val": { + "u32": 0 + } + }, + { + "key": { + "symbol": "supply" + }, + "val": { + "u32": 2 + } + } + ] + } + } + }, + "ext": "v0" + }, + 4095 + ] + ], + [ + { + "contract_data": { + "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM", + "key": { + "vec": [ + { + "symbol": "HolderDividendCheckpoint" + }, + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M" + }, + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4" + } + ] + }, + "durability": "persistent" + } + }, + [ + { + "last_modified_ledger_seq": 0, + "data": { + "contract_data": { + "ext": "v0", + "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM", + "key": { + "vec": [ + { + "symbol": "HolderDividendCheckpoint" + }, + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M" + }, + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4" + } + ] + }, + "durability": "persistent", + "val": { + "i128": { + "hi": 0, + "lo": 0 + } + } + } + }, + "ext": "v0" + }, + 4095 + ] + ], + [ + { + "contract_data": { + "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM", + "key": { + "vec": [ + { + "symbol": "HolderDividendCheckpoint" + }, + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M" + }, + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM" + } + ] + }, + "durability": "persistent" + } + }, + [ + { + "last_modified_ledger_seq": 0, + "data": { + 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{ + "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855" + } + }, + [ + { + "last_modified_ledger_seq": 0, + "data": { + "contract_code": { + "ext": "v0", + "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855", + "code": "" + } + }, + "ext": "v0" + }, + 4095 + ] + ] + ] + }, + "events": [] +} \ No newline at end of file diff --git a/creator-keys/test_snapshots/test/test_holder_count_increments_on_first_receive.1.json b/creator-keys/test_snapshots/test/test_holder_count_increments_on_first_receive.1.json new file mode 100644 index 0000000..9a82b97 --- /dev/null +++ b/creator-keys/test_snapshots/test/test_holder_count_increments_on_first_receive.1.json @@ -0,0 +1,830 @@ +{ + "generators": { + "address": 5, + "nonce": 0 + }, + "auth": [ + [], + [ + [ + "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4", + { + "function": { + "contract_fn": { + "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM", + "function_name": "set_key_price", + "args": [ + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4" + }, + { + "i128": { + "hi": 0, + "lo": 100 + } + } + ] + } + }, + "sub_invocations": [] + } + ] + ], + [ + [ + "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M", + { + "function": { + "contract_fn": { + "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM", + "function_name": "register_creator", + "args": [ + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M" + }, + { + "string": "alice" + } + ] + } + }, + "sub_invocations": [] + } + ] + ], + [ + [ + "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4", + { + "function": { + "contract_fn": { + "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM", + "function_name": "buy_key", + "args": [ + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M" + }, + { + "address": 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"CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM", + "key": { + "ledger_key_nonce": { + "nonce": 2032731177588607455 + } + }, + "durability": "temporary" + } + }, + [ + { + "last_modified_ledger_seq": 0, + "data": { + "contract_data": { + "ext": "v0", + "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM", + "key": { + "ledger_key_nonce": { + "nonce": 2032731177588607455 + } + }, + "durability": "temporary", + "val": "void" + } + }, + "ext": "v0" + }, + 6311999 + ] + ], + [ + { + "contract_code": { + "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855" + } + }, + [ + { + "last_modified_ledger_seq": 0, + "data": { + "contract_code": { + "ext": "v0", + "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855", + "code": "" + } + }, + "ext": "v0" + }, + 4095 + ] + ] + ] + }, + "events": [] +} \ No newline at end of file From fb0c5d349d39803efc0c40c51132aa756f3188d6 Mon Sep 17 00:00:00 2001 From: N-thnI Date: Thu, 25 Jun 2026 12:25:14 +0100 Subject: [PATCH 2/2] style: fix cargo fmt layout in creator-keys storage write --- creator-keys/src/lib.rs | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/creator-keys/src/lib.rs b/creator-keys/src/lib.rs index 2897d86..34cf695 100644 --- a/creator-keys/src/lib.rs +++ b/creator-keys/src/lib.rs @@ -1047,7 +1047,9 @@ impl CreatorKeysContract { env.storage() .persistent() .set(&from_balance_key, &new_from_balance); - env.storage().persistent().set(&to_balance_key, &new_to_balance); + env.storage() + .persistent() + .set(&to_balance_key, &new_to_balance); Ok(()) }