Introduce a multiExtension approach

contracts/colony/Colony.sol

@@ -343,27 +343,28 @@ contract Colony is ColonyStorage, PatriciaTreeProofs, MultiChain {
   }
 
   function installExtension(bytes32 _extensionId, uint256 _version)
-  public stoppable auth
+  public stoppable auth returns (address)
   {
-    IColonyNetwork(colonyNetworkAddress).installExtension(_extensionId, _version);
+    address extension = IColonyNetwork(colonyNetworkAddress).installExtension(_extensionId, _version);
+    return extension;
   }
 
-  function upgradeExtension(bytes32 _extensionId, uint256 _newVersion)
+  function upgradeExtension(address payable _extension, uint256 _newVersion)
   public stoppable auth
   {
-    IColonyNetwork(colonyNetworkAddress).upgradeExtension(_extensionId, _newVersion);
+    IColonyNetwork(colonyNetworkAddress).upgradeExtension(_extension, _newVersion);
   }
 
-  function deprecateExtension(bytes32 _extensionId, bool _deprecated)
+  function deprecateExtension(address payable _extension, bool _deprecated)
   public stoppable auth
   {
-    IColonyNetwork(colonyNetworkAddress).deprecateExtension(_extensionId, _deprecated);
+    IColonyNetwork(colonyNetworkAddress).deprecateExtension(_extension, _deprecated);
   }
 
-  function uninstallExtension(bytes32 _extensionId)
+  function uninstallExtension(address payable _extension)
   public stoppable auth
   {
-    IColonyNetwork(colonyNetworkAddress).uninstallExtension(_extensionId);
+    IColonyNetwork(colonyNetworkAddress).uninstallExtension(_extension);
   }
 
   function addDomain(uint256 _permissionDomainId, uint256 _childSkillIndex, uint256 _parentDomainId) public

contracts/colony/ColonyAuthority.sol

@@ -112,6 +112,9 @@ contract ColonyAuthority is CommonAuthority {
     addRoleCapability(ROOT_ROLE, "unlockToken()");
 
     // Added in colony v6 (d-lwss)
+    addRoleCapability(ROOT_ROLE, "upgradeExtension(address,uint256)");
+    addRoleCapability(ROOT_ROLE, "deprecateExtension(address,bool)");
+    addRoleCapability(ROOT_ROLE, "uninstallExtension(address)");
     addRoleCapability(FUNDING_ROLE, "moveFundsBetweenPots(uint256,uint256,uint256,uint256,uint256,uint256,uint256,uint256,address)");
   }
 

contracts/colony/ColonyStorage.sol

@@ -224,11 +224,12 @@ contract ColonyStorage is CommonStorage, ColonyDataTypes, ColonyNetworkDataTypes
     // Ensure msg.sender is a contract
     require(isContract(msg.sender), "colony-sender-must-be-contract");
 
-    // Ensure msg.sender is an extension
+    // Ensure msg.sender is an extension, must check old & new formats
     // slither-disable-next-line unused-return
     try ColonyExtension(msg.sender).identifier() returns (bytes32 extensionId) {
       require(
-        IColonyNetwork(colonyNetworkAddress).getExtensionInstallation(extensionId, address(this)) == msg.sender,
+        IColonyNetwork(colonyNetworkAddress).getExtensionInstallation(extensionId, address(this)) == msg.sender ||
+        IColonyNetwork(colonyNetworkAddress).getExtensionMultiInstallation(msg.sender) == address(this),
         "colony-must-be-extension"
       );
     } catch {

contracts/colony/IColony.sol

@@ -247,23 +247,24 @@ interface IColony is ColonyDataTypes, IRecovery {
   /// @notice Install an extension to the colony. Secured function to authorised members.
   /// @param extensionId keccak256 hash of the extension name, used as an indentifier
   /// @param version The new extension version to install
-  function installExtension(bytes32 extensionId, uint256 version) external;
+  /// @return extension The address of the extension installation
+  function installExtension(bytes32 extensionId, uint256 version) external returns (address extension);
 
   /// @notice Upgrade an extension in a colony. Secured function to authorised members.
-  /// @param extensionId keccak256 hash of the extension name, used as an indentifier
+  /// @param extension The address of the extension installation
   /// @param newVersion The version to upgrade to (must be one larger than the current version)
-  function upgradeExtension(bytes32 extensionId, uint256 newVersion) external;
+  function upgradeExtension(address payable extension, uint256 newVersion) external;
 
   /// @notice Set the deprecation of an extension in a colony. Secured function to authorised members.
-  /// @param extensionId keccak256 hash of the extension name, used as an indentifier
+  /// @param extension The address of the extension installation
   /// @param deprecated Whether to deprecate the extension or not
-  function deprecateExtension(bytes32 extensionId, bool deprecated) external;
+  function deprecateExtension(address payable extension, bool deprecated) external;
 
   /// @notice Uninstall an extension from a colony. Secured function to authorised members.
   /// @dev This is a permanent action -- re-installing the extension will deploy a new contract
   /// @dev It is recommended to deprecate an extension before uninstalling to allow active objects to be resolved
-  /// @param extensionId keccak256 hash of the extension name, used as an indentifier
-  function uninstallExtension(bytes32 extensionId) external;
+  /// @param extension The address of the extension installation
+  function uninstallExtension(address payable extension) external;
 
   /// @notice Add a colony domain, and its respective local skill under skill with id `_parentSkillId`.
   /// New funding pot is created and associated with the domain here.

contracts/colonyNetwork/ColonyNetworkDataTypes.sol

@@ -116,26 +116,27 @@ interface ColonyNetworkDataTypes {
 
   /// @notice Event logged when an extension is installed in a colony
   /// @param extensionId The identifier for the extension
+  /// @param extension Address of the extension installation
   /// @param colony The address of the colony
   /// @param version The version of the extension
-  event ExtensionInstalled(bytes32 indexed extensionId, address indexed colony, uint256 version);
+  event ExtensionInstalled(bytes32 indexed extensionId, address indexed extension, address indexed colony, uint256 version);
 
   /// @notice Event logged when an extension is upgraded in a colony
-  /// @param extensionId The identifier for the extension
+  /// @param extension Address of the extension installation
   /// @param colony The address of the colony
   /// @param version The new version of the extension
-  event ExtensionUpgraded(bytes32 indexed extensionId, address indexed colony, uint256 version);
+  event ExtensionUpgraded(address indexed extension, address indexed colony, uint256 version);
 
   /// @notice Event logged when an extension is (un)deprecated in a colony
-  /// @param extensionId The identifier for the extension
+  /// @param extension Address of the extension installation
   /// @param colony The address of the colony
   /// @param deprecated Whether the extension is deprecated or not
-  event ExtensionDeprecated(bytes32 indexed extensionId, address indexed colony, bool deprecated);
+  event ExtensionDeprecated(address indexed extension, address indexed colony, bool deprecated);
 
   /// @notice Event logged when an extension is uninstalled from a colony
-  /// @param extensionId The identifier for the extension
+  /// @param extension Address of the extension installation
   /// @param colony The address of the colony
-  event ExtensionUninstalled(bytes32 indexed extensionId, address indexed colony);
+  event ExtensionUninstalled(address indexed extension, address indexed colony);
 
   struct Skill {
     // total number of parent skills

contracts/colonyNetwork/ColonyNetworkExtensions.sol

@@ -50,59 +50,63 @@ contract ColonyNetworkExtensions is ColonyNetworkStorage {
     public
     stoppable
     calledByColony
+    returns (address)
   {
     require(resolvers[_extensionId][_version] != address(0x0), "colony-network-extension-bad-version");
-    require(installations[_extensionId][msg.sender] == address(0x0), "colony-network-extension-already-installed");
 
     EtherRouter extension = new EtherRouter();
-    installations[_extensionId][msg.sender] = address(extension);
+    multiInstallations[address(extension)] = msg.sender;
 
     extension.setResolver(resolvers[_extensionId][_version]);
     ColonyExtension(address(extension)).install(msg.sender);
 
-    emit ExtensionInstalled(_extensionId, msg.sender, _version);
+    emit ExtensionInstalled(_extensionId, address(extension), msg.sender, _version);
+
+    return address(extension);
   }
 
-  function upgradeExtension(bytes32 _extensionId, uint256 _newVersion)
+  function upgradeExtension(address payable _extension, uint256 _newVersion)
     public
     stoppable
     calledByColony
   {
-    require(installations[_extensionId][msg.sender] != address(0x0), "colony-network-extension-not-installed");
+    require(multiInstallations[_extension] == msg.sender, "colony-network-extension-not-installed");
+
+    bytes32 extensionId = ColonyExtension(_extension).identifier();
 
-    address payable extension = installations[_extensionId][msg.sender];
-    require(_newVersion == ColonyExtension(extension).version() + 1, "colony-network-extension-bad-increment");
-    require(resolvers[_extensionId][_newVersion] != address(0x0), "colony-network-extension-bad-version");
+    require(_newVersion == ColonyExtension(_extension).version() + 1, "colony-network-extension-bad-increment");
+    require(resolvers[extensionId][_newVersion] != address(0x0), "colony-network-extension-bad-version");
 
-    EtherRouter(extension).setResolver(resolvers[_extensionId][_newVersion]);
-    ColonyExtension(extension).finishUpgrade();
-    assert(ColonyExtension(extension).version() == _newVersion);
+    EtherRouter(_extension).setResolver(resolvers[extensionId][_newVersion]);
+    ColonyExtension(_extension).finishUpgrade();
 
-    emit ExtensionUpgraded(_extensionId, msg.sender, _newVersion);
+    assert(ColonyExtension(_extension).version() == _newVersion);
+
+    emit ExtensionUpgraded(_extension, msg.sender, _newVersion);
   }
 
-  function deprecateExtension(bytes32 _extensionId, bool _deprecated)
+  function deprecateExtension(address payable _extension, bool _deprecated)
     public
     stoppable
     calledByColony
   {
-    ColonyExtension(installations[_extensionId][msg.sender]).deprecate(_deprecated);
+    ColonyExtension(_extension).deprecate(_deprecated);
 
-    emit ExtensionDeprecated(_extensionId, msg.sender, _deprecated);
+    emit ExtensionDeprecated(_extension, msg.sender, _deprecated);
   }
 
-  function uninstallExtension(bytes32 _extensionId)
+  function uninstallExtension(address payable _extension)
     public
     stoppable
     calledByColony
   {
-    require(installations[_extensionId][msg.sender] != address(0x0), "colony-network-extension-not-installed");
+    require(multiInstallations[_extension] == msg.sender, "colony-network-extension-not-installed");
+
+    delete multiInstallations[_extension];
 
-    ColonyExtension extension = ColonyExtension(installations[_extensionId][msg.sender]);
-    installations[_extensionId][msg.sender] = address(0x0);
-    extension.uninstall();
+    ColonyExtension(_extension).uninstall();
 
-    emit ExtensionUninstalled(_extensionId, msg.sender);
+    emit ExtensionUninstalled(_extension, msg.sender);
   }
 
   // Public view functions
@@ -115,6 +119,14 @@ contract ColonyNetworkExtensions is ColonyNetworkStorage {
     return resolvers[_extensionId][_version];
   }
 
+  function getExtensionMultiInstallation(address _extension)
+    public
+    view
+    returns (address)
+  {
+    return multiInstallations[_extension];
+  }
+
   function getExtensionInstallation(bytes32 _extensionId, address _colony)
     public
     view

contracts/colonyNetwork/ColonyNetworkStorage.sol

@@ -93,13 +93,16 @@ contract ColonyNetworkStorage is CommonStorage, ColonyNetworkDataTypes, DSMath {
   uint256 DEPRECATED_lastMetaColonyStipendIssued; // Storage slot 37
 
   // [_extensionId][version] => resolver
-  mapping(bytes32 => mapping(uint256 => address)) resolvers; // Storage slot 38
+  mapping (bytes32 => mapping(uint256 => address)) resolvers; // Storage slot 38
   // [_extensionId][colony] => address
-  mapping(bytes32 => mapping(address => address payable)) installations; // Storage slot 39
+  mapping (bytes32 => mapping(address => address payable)) installations; // Storage slot 39
 
   // Used for whitelisting payout tokens
   mapping (address => bool) payoutWhitelist; // Storage slot 40
 
+  // [_extension] => colony
+  mapping (address => address payable) multiInstallations; // Storage slot 41
+
   modifier calledByColony() {
     require(_isColony[msg.sender], "colony-caller-must-be-colony");
     _;

contracts/colonyNetwork/IColonyNetwork.sol

@@ -316,21 +316,22 @@ interface IColonyNetwork is ColonyNetworkDataTypes, IRecovery {
   /// @notice Install an extension in a colony. Can only be called by a Colony.
   /// @param extensionId keccak256 hash of the extension name, used as an indentifier
   /// @param version Version of the extension to install
-  function installExtension(bytes32 extensionId, uint256 version) external;
+  /// @return extension The address of the extension installation
+  function installExtension(bytes32 extensionId, uint256 version) external returns (address extension);
 
   /// @notice Upgrade an extension in a colony. Can only be called by a Colony.
-  /// @param extensionId keccak256 hash of the extension name, used as an indentifier
+  /// @param extension Address of the extension installation
   /// @param newVersion Version of the extension to upgrade to (must be one greater than current)
-  function upgradeExtension(bytes32 extensionId, uint256 newVersion) external;
+  function upgradeExtension(address payable extension, uint256 newVersion) external;
 
   /// @notice Set the deprecation of an extension in a colony. Can only be called by a Colony.
-  /// @param extensionId keccak256 hash of the extension name, used as an indentifier
+  /// @param extension Address of the extension installation
   /// @param deprecated Whether to deprecate the extension or not
-  function deprecateExtension(bytes32 extensionId, bool deprecated) external;
+  function deprecateExtension(address payable extension, bool deprecated) external;
 
   /// @notice Uninstall an extension in a colony. Can only be called by a Colony.
-  /// @param extensionId keccak256 hash of the extension name, used as an indentifier
-  function uninstallExtension(bytes32 extensionId) external;
+  /// @param extension Address of the extension installation
+  function uninstallExtension(address payable extension) external;
 
   /// @notice Get an extension's resolver.
   /// @param extensionId keccak256 hash of the extension name, used as an indentifier
@@ -344,6 +345,11 @@ interface IColonyNetwork is ColonyNetworkDataTypes, IRecovery {
   /// @return installation The address of the installed extension
   function getExtensionInstallation(bytes32 extensionId, address colony) external view returns (address installation);
 
+  /// @notice Get an extension's installed colony.
+  /// @param extension Address of the extension installation
+  /// @return colony Address of the colony the extension is installed in
+  function getExtensionMultiInstallation(address extension) external view returns (address colony);
+
   /// @notice Return 1 / the fee to pay to the network. e.g. if the fee is 1% (or 0.01), return 100.
   /// @return _feeInverse The inverse of the network fee
   function getFeeInverse() external view returns (uint256 _feeInverse);

docs/_Interface_IColony.md

@@ -257,7 +257,7 @@ Set the deprecation of an extension in a colony. Secured function to authorised
 
 |Name|Type|Description|
 |---|---|---|
-|extensionId|bytes32|keccak256 hash of the extension name, used as an indentifier
+|extension|address|The address of the extension installation
 |deprecated|bool|Whether to deprecate the extension or not
 
 
@@ -1038,6 +1038,11 @@ Install an extension to the colony. Secured function to authorised members.
 |extensionId|bytes32|keccak256 hash of the extension name, used as an indentifier
 |version|uint256|The new extension version to install
 
+**Return Parameters**
+
+|Name|Type|Description|
+|---|---|---|
+|extension|address|The address of the extension installation
 
 ### `lockToken`
 
@@ -1753,7 +1758,7 @@ Uninstall an extension from a colony. Secured function to authorised members.
 
 |Name|Type|Description|
 |---|---|---|
-|extensionId|bytes32|keccak256 hash of the extension name, used as an indentifier
+|extension|address|The address of the extension installation
 
 
 ### `unlockToken`
@@ -1823,7 +1828,7 @@ Upgrade an extension in a colony. Secured function to authorised members.
 
 |Name|Type|Description|
 |---|---|---|
-|extensionId|bytes32|keccak256 hash of the extension name, used as an indentifier
+|extension|address|The address of the extension installation
 |newVersion|uint256|The version to upgrade to (must be one larger than the current version)
 
 

docs/_Interface_IColonyNetwork.md

@@ -230,7 +230,7 @@ Set the deprecation of an extension in a colony. Can only be called by a Colony.
 
 |Name|Type|Description|
 |---|---|---|
-|extensionId|bytes32|keccak256 hash of the extension name, used as an indentifier
+|extension|address|Address of the extension installation
 |deprecated|bool|Whether to deprecate the extension or not
 
 
@@ -352,6 +352,23 @@ Get an extension's installation.
 |---|---|---|
 |installation|address|The address of the installed extension
 
+### `getExtensionMultiInstallation`
+
+Get an extension's installed colony.
+
+
+**Parameters**
+
+|Name|Type|Description|
+|---|---|---|
+|extension|address|Address of the extension installation
+
+**Return Parameters**
+
+|Name|Type|Description|
+|---|---|---|
+|colony|address|Address of the colony the extension is installed in
+
 ### `getExtensionResolver`
 
 Get an extension's resolver.
@@ -663,6 +680,11 @@ Install an extension in a colony. Can only be called by a Colony.
 |extensionId|bytes32|keccak256 hash of the extension name, used as an indentifier
 |version|uint256|Version of the extension to install
 
+**Return Parameters**
+
+|Name|Type|Description|
+|---|---|---|
+|extension|address|The address of the extension installation
 
 ### `isColony`
 
@@ -934,7 +956,7 @@ Uninstall an extension in a colony. Can only be called by a Colony.
 
 |Name|Type|Description|
 |---|---|---|
-|extensionId|bytes32|keccak256 hash of the extension name, used as an indentifier
+|extension|address|Address of the extension installation
 
 
 ### `unstakeForMining`
@@ -982,5 +1004,5 @@ Upgrade an extension in a colony. Can only be called by a Colony.
 
 |Name|Type|Description|
 |---|---|---|
-|extensionId|bytes32|keccak256 hash of the extension name, used as an indentifier
+|extension|address|Address of the extension installation
 |newVersion|uint256|Version of the extension to upgrade to (must be one greater than current)

helpers/test-helper.js

@@ -1004,3 +1004,7 @@ export function bn2bytes32(x, size = 64) {
 export function rolesToBytes32(roles) {
   return `0x${new BN(roles.map((role) => new BN(1).shln(role)).reduce((a, b) => a.or(b), new BN(0))).toString(16, 64)}`;
 }
+
+export function getExtensionAddressFromTx(installExtensionTx) {
+  return `0x${installExtensionTx.receipt.rawLogs[1].topics[2].slice(26)}`;
+}