Contract con_gamma_phi_channel_impl_v1
| Creator | ae9cfa894495930b8d2f1707ab936325b5c848ace677bb8ba41dfe7dcdb3e3e6 |
| Creation Hash | 1f4b5dec85b43e7aa43c5007327328f30f37375b50da325d8c20a1260257e088 |
| Created On | 840 days ago - 12/29/2021, 8:39:50 PM UTC+0 |
Contract Code
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# con_gamma_phi_channel_impl_v1
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# owner: con_gamma_phi_profile_v5
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import con_rsa_encryption as rsa
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random.seed()
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@export
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def interact(payload: dict, state: dict, caller: str):
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# state
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total_users = state['total_users']
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metadata = state['metadata']
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usernames = state['usernames']
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owner = state['owner']
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channels = state['channels']
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# action
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function = payload['action']
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if function == 'create_channel':
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create_channel(
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caller,
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payload.get('users'),
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payload.get('channel_name'),
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channels,
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metadata,
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usernames
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)
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elif function == 'update_channel':
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update_channel(
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caller,
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payload.get('users'),
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payload.get('channel_name'),
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channels,
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metadata,
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usernames
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)
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def generate_key() -> str:
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return random.getrandbits(256).to_bytes(256 // 8, "big").hex()
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def update_channel(caller: str, users: list, channel_name: str, channels: Any, metadata: Any, usernames: Any):
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# sha256 key
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assert metadata[caller, 'username'] is not None, 'This user does not exist.'
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assert channel_name is not None, 'channel_name cannot be null.'
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assert channels[channel_name, 'owner'] is not None, 'Channel does not exist.'
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assert channels[channel_name, 'owner'] == caller, 'You do not own this channel.'
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if caller in users:
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users.remove(caller)
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all_users = [caller] + users
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key = generate_key()
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user_addresses = []
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for user in all_users:
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user_address = usernames[user]
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if user_address is None:
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user_address = user
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rsa_key = metadata[user, 'public_rsa_key']
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assert rsa_key is not None, f'User {user} has not setup their encryption keys.'
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rsa_keys = rsa_key.split('|')
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encrypted = rsa.encrypt(
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message_str=key,
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n=int(rsa_keys[0]),
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e=int(rsa_keys[1])
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)
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metadata[user, 'keys', channel_name] = encrypted
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user_addresses.append(user_address)
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channels[channel_name, 'users'] = user_addresses
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def validate_channel_name(channel_name: str):
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assert channel_name is not None and len(channel_name) > 0, 'channel_name cannot be null or empty'
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assert isinstance(channel_name, str), 'channel_name must be a string.'
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assert len(channel_name) <= 32, 'channel_name cannot be longer than 32 characters.'
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assert all([c.isalnum() or c in ('_', '-') for c in channel_name]), 'channel_name has invalid characters. Each character must be alphanumeric, a hyphen, or an underscore.'
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assert channel_name[0] not in ('-', '_') and channel_name[-1] not in ('-', '_'), 'channel_name cannot start or end with a hyphen or underscore.'
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def create_channel(caller: str, users: list, channel_name: str, channels: Any, metadata: Any, usernames: Any):
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# sha256 key
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assert metadata[caller, 'username'] is not None, 'This user does not exist.'
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assert channel_name is not None, 'channel_name cannot be null.'
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assert channels[channel_name, 'owner'] is None, 'Channel already exists.'
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validate_channel_name(channel_name)
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if caller in users:
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users.remove(caller)
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all_users = [caller] + users
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channels[channel_name, 'owner'] = caller
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key = generate_key()
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user_addresses = []
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for user in all_users:
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user_address = usernames[user]
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if user_address is None:
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user_address = user
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rsa_key = metadata[user, 'public_rsa_key']
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assert rsa_key is not None, f'User {user} has not setup their encryption keys.'
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rsa_keys = rsa_key.split('|')
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encrypted = rsa.encrypt(
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message_str=key,
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n=int(rsa_keys[0]),
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e=int(rsa_keys[1])
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)
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metadata[user, 'keys', channel_name] = encrypted
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user_addresses.append(user_address)
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channels[channel_name, 'users'] = user_addresses
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Byte Code
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