Interface for all security tokens (ISecurityToken.sol)

View Source: contracts/interfaces/ISecurityToken.sol

ISecurityToken

Events

event Transfer(address indexed from, address indexed to, uint256  value);
event Approval(address indexed owner, address indexed spender, uint256  value);
event ModuleAdded(uint8[]  _types, bytes32 indexed _name, address indexed _moduleFactory, address  _module, uint256  _moduleCost, uint256  _budget, bytes32  _label, bool  _archived);
event UpdateTokenDetails(string  _oldDetails, string  _newDetails);
event UpdateTokenName(string  _oldName, string  _newName);
event GranularityChanged(uint256  _oldGranularity, uint256  _newGranularity);
event FreezeIssuance();
event FreezeTransfers(bool  _status);
event CheckpointCreated(uint256 indexed _checkpointId, uint256  _investorLength);
event SetController(address indexed _oldController, address indexed _newController);
event TreasuryWalletChanged(address  _oldTreasuryWallet, address  _newTreasuryWallet);
event DisableController();
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
event TokenUpgraded(uint8  _major, uint8  _minor, uint8  _patch);
event ModuleArchived(uint8[]  _types, address  _module);
event ModuleUnarchived(uint8[]  _types, address  _module);
event ModuleRemoved(uint8[]  _types, address  _module);
event ModuleBudgetChanged(uint8[]  _moduleTypes, address  _module, uint256  _oldBudget, uint256  _budget);
event TransferByPartition(bytes32 indexed _fromPartition, address  _operator, address indexed _from, address indexed _to, uint256  _value, bytes  _data, bytes  _operatorData);
event AuthorizedOperator(address indexed operator, address indexed tokenHolder);
event RevokedOperator(address indexed operator, address indexed tokenHolder);
event AuthorizedOperatorByPartition(bytes32 indexed partition, address indexed operator, address indexed tokenHolder);
event RevokedOperatorByPartition(bytes32 indexed partition, address indexed operator, address indexed tokenHolder);
event IssuedByPartition(bytes32 indexed partition, address indexed to, uint256  value, bytes  data);
event RedeemedByPartition(bytes32 indexed partition, address indexed operator, address indexed from, uint256  value, bytes  data, bytes  operatorData);
event DocumentRemoved(bytes32 indexed _name, string  _uri, bytes32  _documentHash);
event DocumentUpdated(bytes32 indexed _name, string  _uri, bytes32  _documentHash);
event ControllerTransfer(address  _controller, address indexed _from, address indexed _to, uint256  _value, bytes  _data, bytes  _operatorData);
event ControllerRedemption(address  _controller, address indexed _tokenHolder, uint256  _value, bytes  _data, bytes  _operatorData);
event Issued(address indexed _operator, address indexed _to, uint256  _value, bytes  _data);
event Redeemed(address indexed _operator, address indexed _from, uint256  _value, bytes  _data);

Functions

symbol

Arguments

Name

Type

Description

name

Arguments

Name

Type

Description

decimals

Arguments

Name

Type

Description

totalSupply

Arguments

Name

Type

Description

balanceOf

Arguments

Name

Type

Description

owner

address

allowance

Arguments

Name

Type

Description

owner

address

spender

address

transfer

Arguments

Name

Type

Description

to

address

value

uint256

transferFrom

Arguments

Name

Type

Description

from

address

to

address

value

uint256

approve

Arguments

Name

Type

Description

spender

address

value

uint256

decreaseAllowance

Arguments

Name

Type

Description

spender

address

subtractedValue

uint256

increaseAllowance

Arguments

Name

Type

Description

spender

address

addedValue

uint256

canTransfer

Transfers of securities may fail for a number of reasons. So this function will used to understand the cause of failure by getting the byte value. Which will be the ESC that follows the EIP 1066. ESC can be mapped with a reson string to understand the failure cause, table of Ethereum status code will always reside off-chain

Returns

byte Ethereum status code (ESC)

Arguments

Name

Type

Description

_to

address

address The address which you want to transfer to

_value

uint256

uint256 the amount of tokens to be transferred

_data

bytes

The bytes _data allows arbitrary data to be submitted alongside the transfer.

initialize

Initialization function

Arguments

Name

Type

Description

_getterDelegate

address

canTransferByPartition

The standard provides an on-chain function to determine whether a transfer will succeed, and return details indicating the reason if the transfer is not valid.

Returns

ESC (Ethereum Status Code) following the EIP-1066 standard

Arguments

Name

Type

Description

_from

address

The address from whom the tokens get transferred.

_to

address

The address to which to transfer tokens to.

_partition

bytes32

The partition from which to transfer tokens

_value

uint256

The amount of tokens to transfer from _partition

_data

bytes

Additional data attached to the transfer of tokens

canTransferFrom

Transfers of securities may fail for a number of reasons. So this function will used to understand the cause of failure by getting the byte value. Which will be the ESC that follows the EIP 1066. ESC can be mapped with a reson string to understand the failure cause, table of Ethereum status code will always reside off-chain

Returns

byte Ethereum status code (ESC)

Arguments

Name

Type

Description

_from

address

address The address which you want to send tokens from

_to

address

address The address which you want to transfer to

_value

uint256

uint256 the amount of tokens to be transferred

_data

bytes

The bytes _data allows arbitrary data to be submitted alongside the transfer.

setDocument

Used to attach a new document to the contract, or update the URI or hash of an existing attached document

Arguments

Name

Type

Description

_name

bytes32

Name of the document. It should be unique always

_uri

string

Off-chain uri of the document from where it is accessible to investors/advisors to read.

_documentHash

bytes32

hash (of the contents) of the document.

removeDocument

Used to remove an existing document from the contract by giving the name of the document.

Arguments

Name

Type

Description

_name

bytes32

Name of the document. It should be unique always

getDocument

Used to return the details of a document with a known name (bytes32).

Returns

string The URI associated with the document.

Arguments

Name

Type

Description

_name

bytes32

Name of the document

getAllDocuments

Used to retrieve a full list of documents attached to the smart contract.

Returns

bytes32 List of all documents names present in the contract.

Arguments

Name

Type

Description

isControllable

In order to provide transparency over whether controllerTransfer / controllerRedeem are useable or not isControllable function will be used.

Returns

bool true when controller address is non-zero otherwise return false.

Arguments

Name

Type

Description

isModule

Checks if an address is a module of certain type

Arguments

Name

Type

Description

_module

address

Address to check

_type

uint8

type to check against

issue

This function must be called to increase the total supply (Corresponds to mint function of ERC20).

Arguments

Name

Type

Description

_tokenHolder

address

The account that will receive the created tokens (account should be whitelisted or KYCed).

_value

uint256

The amount of tokens need to be issued

_data

bytes

The bytes _data allows arbitrary data to be submitted alongside the transfer.

issueMulti

issue new tokens and assigns them to the target _tokenHolder.

Returns

success

Arguments

Name

Type

Description

_tokenHolders

address[]

A list of addresses to whom the minted tokens will be dilivered

_values

uint256[]

A list of number of tokens get minted and transfer to corresponding address of the investor from _tokenHolders[] list

issueByPartition

Increases totalSupply and the corresponding amount of the specified owners partition

Arguments

Name

Type

Description

_partition

bytes32

The partition to allocate the increase in balance

_tokenHolder

address

The token holder whose balance should be increased

_value

uint256

The amount by which to increase the balance

_data

bytes

Additional data attached to the minting of tokens

redeemByPartition

Decreases totalSupply and the corresponding amount of the specified partition of msg.sender

Arguments

Name

Type

Description

_partition

bytes32

The partition to allocate the decrease in balance

_value

uint256

The amount by which to decrease the balance

_data

bytes

Additional data attached to the burning of tokens

redeem

This function redeem an amount of the token of a msg.sender. For doing so msg.sender may incentivize using different ways that could be implemented with in the redeem function definition. But those implementations are out of the scope of the ERC1594.

Arguments

Name

Type

Description

_value

uint256

The amount of tokens need to be redeemed

_data

bytes

The bytes _data it can be used in the token contract to authenticate the redemption.

redeemFrom

This function redeem an amount of the token of a msg.sender. For doing so msg.sender may incentivize using different ways that could be implemented with in the redeem function definition. But those implementations are out of the scope of the ERC1594.

Arguments

Name

Type

Description

_tokenHolder

address

The account whose tokens gets redeemed.

_value

uint256

The amount of tokens need to be redeemed

_data

bytes

The bytes _data it can be used in the token contract to authenticate the redemption.

operatorRedeemByPartition

Decreases totalSupply and the corresponding amount of the specified partition of tokenHolder

Arguments

Name

Type

Description

_partition

bytes32

The partition to allocate the decrease in balance.

_tokenHolder

address

The token holder whose balance should be decreased

_value

uint256

The amount by which to decrease the balance

_data

bytes

Additional data attached to the burning of tokens

_operatorData

bytes

Additional data attached to the transfer of tokens by the operator

checkPermission

Validate permissions with PermissionManager if it exists, If no Permission return false

Returns

success

Arguments

Name

Type

Description

_delegate

address

address of delegate

_module

address

address of PermissionManager module

_perm

bytes32

the permissions

getModule

Returns module list for a module type

Returns

bytes32 Name

Arguments

Name

Type

Description

_module

address

Address of the module

getModulesByName

Returns module list for a module name

Returns

address[] List of modules with this name

Arguments

Name

Type

Description

_name

bytes32

Name of the module

getModulesByType

Returns module list for a module type

Returns

address[] List of modules with this type

Arguments

Name

Type

Description

_type

uint8

Type of the module

getTreasuryWallet

use to return the global treasury wallet

Arguments

Name

Type

Description

totalSupplyAt

Queries totalSupply at a specified checkpoint

Arguments

Name

Type

Description

_checkpointId

uint256

Checkpoint ID to query as of

balanceOfAt

Queries balance at a specified checkpoint

Arguments

Name

Type

Description

_investor

address

Investor to query balance for

_checkpointId

uint256

Checkpoint ID to query as of

createCheckpoint

Creates a checkpoint that can be used to query historical balances / totalSuppy

Arguments

Name

Type

Description

getCheckpointTimes

Gets list of times that checkpoints were created

Returns

List of checkpoint times

Arguments

Name

Type

Description

getInvestors

returns an array of investors NB - this length may differ from investorCount as it contains all investors that ever held tokens

Returns

list of addresses

Arguments

Name

Type

Description

getInvestorsAt

returns an array of investors at a given checkpoint NB - this length may differ from investorCount as it contains all investors that ever held tokens

Returns

list of investors

Arguments

Name

Type

Description

_checkpointId

uint256

Checkpoint id at which investor list is to be populated

getInvestorsSubsetAt

returns an array of investors with non zero balance at a given checkpoint

Returns

list of investors

Arguments

Name

Type

Description

_checkpointId

uint256

Checkpoint id at which investor list is to be populated

_start

uint256

Position of investor to start iteration from

_end

uint256

Position of investor to stop iteration at

iterateInvestors

generates subset of investors NB - can be used in batches if investor list is large

Returns

list of investors

Arguments

Name

Type

Description

_start

uint256

Position of investor to start iteration from

_end

uint256

Position of investor to stop iteration at

currentCheckpointId

Gets current checkpoint ID

Returns

Id

Arguments

Name

Type

Description

isOperator

Determines whether _operator is an operator for all partitions of _tokenHolder

Returns

Whether the _operator is an operator for all partitions of _tokenHolder

Arguments

Name

Type

Description

_operator

address

The operator to check

_tokenHolder

address

The token holder to check

isOperatorForPartition

Determines whether _operator is an operator for a specified partition of _tokenHolder

Returns

Whether the _operator is an operator for a specified partition of _tokenHolder

Arguments

Name

Type

Description

_partition

bytes32

The partition to check

_operator

address

The operator to check

_tokenHolder

address

The token holder to check

partitionsOf

Return all partitions

Returns

List of partitions

Arguments

Name

Type

Description

_tokenHolder

address

Whom balance need to queried

dataStore

Gets data store address

Returns

data store address

Arguments

Name

Type

Description

changeDataStore

Allows owner to change data store

Arguments

Name

Type

Description

_dataStore

address

Address of the token data store

changeTreasuryWallet

Allows to change the treasury wallet address

Arguments

Name

Type

Description

_wallet

address

Ethereum address of the treasury wallet

withdrawERC20

Allows the owner to withdraw unspent POLY stored by them on the ST or any ERC20 token.

Arguments

Name

Type

Description

_tokenContract

address

Address of the ERC20Basic compliance token

_value

uint256

Amount of POLY to withdraw

changeModuleBudget

Allows owner to increase/decrease POLY approval of one of the modules

Arguments

Name

Type

Description

_module

address

Module address

_change

uint256

Change in allowance

_increase

bool

True if budget has to be increased, false if decrease

updateTokenDetails

Changes the tokenDetails

Arguments

Name

Type

Description

_newTokenDetails

string

New token details

changeName

Allows owner to change token name

Arguments

Name

Type

Description

_name

string

new name of the token

changeGranularity

Allows the owner to change token granularity

Arguments

Name

Type

Description

_granularity

uint256

Granularity level of the token

freezeTransfers

Freezes all the transfers

Arguments

Name

Type

Description

unfreezeTransfers

Un-freezes all the transfers

Arguments

Name

Type

Description

freezeIssuance

Permanently freeze issuance of this security token.

Arguments

Name

Type

Description

_signature

bytes

addModuleWithLabel

Attachs a module to the SecurityToken

Arguments

Name

Type

Description

_moduleFactory

address

is the address of the module factory to be added

_data

bytes

is data packed into bytes used to further configure the module (See STO usage)

_maxCost

uint256

max amount of POLY willing to pay to the module.

_budget

uint256

max amount of ongoing POLY willing to assign to the module.

_label

bytes32

custom module label.

_archived

bool

whether to add the module as an archived module

addModule

Function used to attach a module to the security token

Arguments

Name

Type

Description

_moduleFactory

address

is the address of the module factory to be added

_data

bytes

is data packed into bytes used to further configure the module (See STO usage)

_maxCost

uint256

max amount of POLY willing to pay to module. (WIP)

_budget

uint256

max amount of ongoing POLY willing to assign to the module.

_archived

bool

whether to add the module as an archived module

archiveModule

Archives a module attached to the SecurityToken

Arguments

Name

Type

Description

_module

address

address of module to archive

unarchiveModule

Unarchives a module attached to the SecurityToken

Arguments

Name

Type

Description

_module

address

address of module to unarchive

removeModule

Removes a module attached to the SecurityToken

Arguments

Name

Type

Description

_module

address

address of module to archive

setController

Used by the issuer to set the controller addresses

Arguments

Name

Type

Description

_controller

address

address of the controller

controllerTransfer

This function allows an authorised address to transfer tokens between any two token holders. The transfer must still respect the balances of the token holders (so the transfer must be for at most balanceOf(_from) tokens) and potentially also need to respect other transfer restrictions.

Arguments

Name

Type

Description

_from

address

Address The address which you want to send tokens from

_to

address

Address The address which you want to transfer to

_value

uint256

uint256 the amount of tokens to be transferred

_data

bytes

data to validate the transfer. (It is not used in this reference implementation

because use of _data parameter is implementation specific). | | _operatorData | bytes | data attached to the transfer by controller to emit in event. (It is more like a reason string for calling this function (aka force transfer) which provides the transparency on-chain). |

controllerRedeem

This function allows an authorised address to redeem tokens for any token holder. The redemption must still respect the balances of the token holder (so the redemption must be for at most balanceOf(_tokenHolder) tokens) and potentially also need to respect other transfer restrictions.

Arguments

Name

Type

Description

_tokenHolder

address

The account whose tokens will be redeemed.

_value

uint256

uint256 the amount of tokens need to be redeemed.

_data

bytes

data to validate the transfer. (It is not used in this reference implementation

because use of _data parameter is implementation specific). | | _operatorData | bytes | data attached to the transfer by controller to emit in event. (It is more like a reason string for calling this function (aka force transfer) which provides the transparency on-chain). |

disableController

Used by the issuer to permanently disable controller functionality

Arguments

Name

Type

Description

_signature

bytes

getVersion

Used to get the version of the securityToken

Arguments

Name

Type

Description

getInvestorCount

Gets the investor count

Arguments

Name

Type

Description

holderCount

Gets the holder count (investors with non zero balance)

Arguments

Name

Type

Description

transferWithData

Overloaded version of the transfer function

Returns

bool success

Arguments

Name

Type

Description

_to

address

receiver of transfer

_value

uint256

value of transfer

_data

bytes

data to indicate validation

transferFromWithData

Overloaded version of the transferFrom function

Returns

bool success

Arguments

Name

Type

Description

_from

address

sender of transfer

_to

address

receiver of transfer

_value

uint256

value of transfer

_data

bytes

data to indicate validation

transferByPartition

Transfers the ownership of tokens from a specified partition from one address to another address

Returns

The partition to which the transferred tokens were allocated for the _to address

Arguments

Name

Type

Description

_partition

bytes32

The partition from which to transfer tokens

_to

address

The address to which to transfer tokens to

_value

uint256

The amount of tokens to transfer from _partition

_data

bytes

Additional data attached to the transfer of tokens

balanceOfByPartition

Get the balance according to the provided partitions

Returns

Amount of tokens as per the given partitions

Arguments

Name

Type

Description

_partition

bytes32

Partition which differentiate the tokens.

_tokenHolder

address

Whom balance need to queried

granularity

Provides the granularity of the token

Returns

uint256

Arguments

Name

Type

Description

polymathRegistry

Provides the address of the polymathRegistry

Returns

address

Arguments

Name

Type

Description

upgradeModule

Upgrades a module attached to the SecurityToken

Arguments

Name

Type

Description

_module

address

address of module to archive

upgradeToken

Upgrades security token

Arguments

Name

Type

Description

isIssuable

A security token issuer can specify that issuance has finished for the token (i.e. no new tokens can be minted or issued).

Returns

bool true signifies the minting is allowed. While false denotes the end of minting

Arguments

Name

Type

Description

authorizeOperator

Authorises an operator for all partitions of msg.sender. NB - Allowing investors to authorize an investor to be an operator of all partitions but it doesn't mean we operator is allowed to transfer the LOCKED partition values. Logic for this restriction is written in operatorTransferByPartition() function.

Arguments

Name

Type

Description

_operator

address

An address which is being authorised.

revokeOperator

Revokes authorisation of an operator previously given for all partitions of msg.sender. NB - Allowing investors to authorize an investor to be an operator of all partitions but it doesn't mean we operator is allowed to transfer the LOCKED partition values. Logic for this restriction is written in operatorTransferByPartition() function.

Arguments

Name

Type

Description

_operator

address

An address which is being de-authorised

authorizeOperatorByPartition

Authorises an operator for a given partition of msg.sender

Arguments

Name

Type

Description

_partition

bytes32

The partition to which the operator is authorised

_operator

address

An address which is being authorised

revokeOperatorByPartition

Revokes authorisation of an operator previously given for a specified partition of msg.sender

Arguments

Name

Type

Description

_partition

bytes32

The partition to which the operator is de-authorised

_operator

address

An address which is being de-authorised

operatorTransferByPartition

Transfers the ownership of tokens from a specified partition from one address to another address

Returns

The partition to which the transferred tokens were allocated for the _to address

Arguments

Name

Type

Description

_partition

bytes32

The partition from which to transfer tokens.

_from

address

The address from which to transfer tokens from

_to

address

The address to which to transfer tokens to

_value

uint256

The amount of tokens to transfer from _partition

_data

bytes

Additional data attached to the transfer of tokens

_operatorData

bytes

Additional data attached to the transfer of tokens by the operator

transfersFrozen

Arguments

Name

Type

Description

transferOwnership

Allows the current owner to transfer control of the contract to a newOwner.

Arguments

Name

Type

Description

newOwner

address

The address to transfer ownership to.

isOwner

Returns

true if msg.sender is the owner of the contract.

Arguments

Name

Type

Description

owner

Returns

the address of the owner.

Arguments

Name

Type

Description

controller

Arguments

Name

Type

Description

moduleRegistry

Arguments

Name

Type

Description

securityTokenRegistry

Arguments

Name

Type

Description

polyToken

Arguments

Name

Type

Description

tokenFactory

Arguments

Name

Type

Description

getterDelegate

Arguments

Name

Type

Description

controllerDisabled

Arguments

Name

Type

Description

initialized

Arguments

Name

Type

Description

tokenDetails

Arguments

Name

Type

Description

updateFromRegistry

Arguments

Name

Type

Description

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