@@ -89,6 +89,27 @@ const PERMIT_REQUEST_MOCK = {
8989 traceContext : null ,
9090} ;
9191
92+ const DELEGATION_PARAMS_MOCK = {
93+ data : '{"types":{"EIP712Domain":[{"name":"chainId","type":"uint256"}],"Delegation":[{"name":"delegate","type":"address"},{"name":"delegator","type":"address"},{"name":"authority","type":"bytes"},{"name":"caveats","type":"bytes"}]},"primaryType":"Delegation","domain":{"chainId":1},"message":{"delegate":"0x5B38Da6a701c568545dCfcB03FcB875f56beddC4","delegator":"0x975e73efb9ff52e23bac7f7e043a1ecd06d05477","authority":"0x1234abcd","caveats":[]},"metadata":{"origin":"https://metamask.github.io","justification":"Testing delegation"}}' ,
94+ from : '0x975e73efb9ff52e23bac7f7e043a1ecd06d05477' ,
95+ version : 'V4' ,
96+ signatureMethod : 'eth_signTypedData_v4' ,
97+ } ;
98+
99+ const DELEGATION_REQUEST_MOCK = {
100+ method : 'eth_signTypedData_v4' ,
101+ params : [
102+ '0x975e73efb9ff52e23bac7f7e043a1ecd06d05477' ,
103+ DELEGATION_PARAMS_MOCK . data ,
104+ ] ,
105+ jsonrpc : '2.0' ,
106+ id : 1680528591 ,
107+ origin : 'npm:@metamask/gator-permissions-snap' ,
108+ networkClientId : 'mainnet' ,
109+ tabId : 1048807182 ,
110+ traceContext : null ,
111+ } ;
112+
92113/**
93114 * Create a mock messenger instance.
94115 *
@@ -101,6 +122,7 @@ function createMessengerMock() {
101122 const keyringControllerSignTypedMessageMock = jest . fn ( ) ;
102123 const loggingControllerAddMock = jest . fn ( ) ;
103124 const networkControllerGetNetworkClientByIdMock = jest . fn ( ) ;
125+ const decodePermissionFromPermissionContextForOriginMock = jest . fn ( ) ;
104126
105127 // eslint-disable-next-line @typescript-eslint/no-explicit-any
106128 const callMock = ( method : string , ...args : any [ ] ) => {
@@ -117,6 +139,8 @@ function createMessengerMock() {
117139 return loggingControllerAddMock ( ...args ) ;
118140 case 'NetworkController:getNetworkClientById' :
119141 return networkControllerGetNetworkClientByIdMock ( ...args ) ;
142+ case 'GatorPermissionsController:decodePermissionFromPermissionContextForOrigin' :
143+ return decodePermissionFromPermissionContextForOriginMock ( ...args ) ;
120144 default :
121145 throw new Error ( `Messenger method not recognised: ${ method } ) ;
122146 }
@@ -144,12 +168,17 @@ function createMessengerMock() {
144168 } ,
145169 } ) ;
146170
171+ decodePermissionFromPermissionContextForOriginMock . mockReturnValue ( {
172+ kind : 'decoded-permission' ,
173+ } ) ;
174+
147175 return {
148176 accountsControllerGetStateMock,
149177 approvalControllerAddRequestMock,
150178 keyringControllerSignPersonalMessageMock,
151179 keyringControllerSignTypedMessageMock,
152180 loggingControllerAddMock,
181+ decodePermissionFromPermissionContextForOriginMock,
153182 messenger,
154183 } ;
155184}
@@ -933,6 +962,201 @@ describe('SignatureController', () => {
933962 ) . toBe ( SignTypedDataVersion . V3 ) ;
934963 } ) ;
935964
965+ describe ( 'delegations' , ( ) => {
966+ it ( 'invokes decodePermissionFromRequest to get execution permission' , async ( ) => {
967+ const {
968+ controller,
969+ decodePermissionFromPermissionContextForOriginMock,
970+ } = createController ( ) ;
971+
972+ await controller . newUnsignedTypedMessage (
973+ DELEGATION_PARAMS_MOCK ,
974+ DELEGATION_REQUEST_MOCK ,
975+ SignTypedDataVersion . V4 ,
976+ { parseJsonData : false } ,
977+ ) ;
978+
979+ expect (
980+ decodePermissionFromPermissionContextForOriginMock ,
981+ ) . toHaveBeenCalledWith ( {
982+ origin : 'npm:@metamask/gator-permissions-snap' ,
983+ chainId : 1 ,
984+ delegation : {
985+ delegate : '0x5B38Da6a701c568545dCfcB03FcB875f56beddC4' ,
986+ delegator : '0x975e73efb9ff52e23bac7f7e043a1ecd06d05477' ,
987+ authority : '0x1234abcd' ,
988+ caveats : [ ] ,
989+ } ,
990+ metadata : {
991+ origin : 'https://metamask.github.io' ,
992+ justification : 'Testing delegation' ,
993+ } ,
994+ } ) ;
995+ } ) ;
996+
997+ it ( 'does not invoke decodePermissionFromRequest if version is not V4' , async ( ) => {
998+ const {
999+ controller,
1000+ decodePermissionFromPermissionContextForOriginMock,
1001+ } = createController ( ) ;
1002+
1003+ await controller . newUnsignedTypedMessage (
1004+ DELEGATION_PARAMS_MOCK ,
1005+ DELEGATION_REQUEST_MOCK ,
1006+ SignTypedDataVersion . V3 ,
1007+ { parseJsonData : false } ,
1008+ ) ;
1009+
1010+ expect (
1011+ decodePermissionFromPermissionContextForOriginMock ,
1012+ ) . not . toHaveBeenCalled ( ) ;
1013+ } ) ;
1014+
1015+ it ( 'sets decodedPermission on the message state' , async ( ) => {
1016+ const { controller } = createController ( ) ;
1017+
1018+ await controller . newUnsignedTypedMessage (
1019+ DELEGATION_PARAMS_MOCK ,
1020+ DELEGATION_REQUEST_MOCK ,
1021+ SignTypedDataVersion . V4 ,
1022+ { parseJsonData : false } ,
1023+ ) ;
1024+
1025+ const { decodedPermission } =
1026+ controller . state . signatureRequests [ ID_MOCK ] ;
1027+
1028+ expect ( decodedPermission ) . toStrictEqual ( {
1029+ kind : 'decoded-permission' ,
1030+ } ) ;
1031+ } ) ;
1032+
1033+ it ( 'does not invoke decodePermissionFromRequest if data is not a delegation request' , async ( ) => {
1034+ const {
1035+ controller,
1036+ decodePermissionFromPermissionContextForOriginMock,
1037+ } = createController ( ) ;
1038+
1039+ await controller . newUnsignedTypedMessage (
1040+ {
1041+ ...DELEGATION_PARAMS_MOCK ,
1042+ data : '{primaryType:"not-a-delegation"}' ,
1043+ } ,
1044+ DELEGATION_REQUEST_MOCK ,
1045+ SignTypedDataVersion . V4 ,
1046+ { parseJsonData : false } ,
1047+ ) ;
1048+
1049+ expect (
1050+ decodePermissionFromPermissionContextForOriginMock ,
1051+ ) . not . toHaveBeenCalled ( ) ;
1052+ } ) ;
1053+
1054+ it ( 'does not set decodedPermission if data is not a delegation request' , async ( ) => {
1055+ const { controller } = createController ( ) ;
1056+
1057+ await controller . newUnsignedTypedMessage (
1058+ {
1059+ ...DELEGATION_PARAMS_MOCK ,
1060+ data : '{primaryType:"not-a-delegation"}' ,
1061+ } ,
1062+ DELEGATION_REQUEST_MOCK ,
1063+ SignTypedDataVersion . V4 ,
1064+ { parseJsonData : false } ,
1065+ ) ;
1066+
1067+ const { decodedPermission } =
1068+ controller . state . signatureRequests [ ID_MOCK ] ;
1069+
1070+ expect ( decodedPermission ) . toBeUndefined ( ) ;
1071+ } ) ;
1072+
1073+ it ( 'does not set decodedPermission if decoding throws an error' , async ( ) => {
1074+ const {
1075+ controller,
1076+ decodePermissionFromPermissionContextForOriginMock,
1077+ } = createController ( ) ;
1078+
1079+ decodePermissionFromPermissionContextForOriginMock . mockImplementation (
1080+ ( ) => {
1081+ throw new Error ( 'An error occurred' ) ;
1082+ } ,
1083+ ) ;
1084+
1085+ await controller . newUnsignedTypedMessage (
1086+ DELEGATION_PARAMS_MOCK ,
1087+ DELEGATION_REQUEST_MOCK ,
1088+ SignTypedDataVersion . V4 ,
1089+ { parseJsonData : false } ,
1090+ ) ;
1091+
1092+ const { decodedPermission } =
1093+ controller . state . signatureRequests [ ID_MOCK ] ;
1094+
1095+ expect ( decodedPermission ) . toBeUndefined ( ) ;
1096+ } ) ;
1097+
1098+ it ( 'does not set decodedPermission if decoding returns undefined' , async ( ) => {
1099+ const {
1100+ controller,
1101+ decodePermissionFromPermissionContextForOriginMock,
1102+ } = createController ( ) ;
1103+
1104+ decodePermissionFromPermissionContextForOriginMock . mockReturnValue (
1105+ undefined ,
1106+ ) ;
1107+
1108+ await controller . newUnsignedTypedMessage (
1109+ DELEGATION_PARAMS_MOCK ,
1110+ DELEGATION_REQUEST_MOCK ,
1111+ SignTypedDataVersion . V4 ,
1112+ { parseJsonData : false } ,
1113+ ) ;
1114+
1115+ const { decodedPermission } =
1116+ controller . state . signatureRequests [ ID_MOCK ] ;
1117+
1118+ expect ( decodedPermission ) . toBeUndefined ( ) ;
1119+ } ) ;
1120+
1121+ it ( 'does not set decodedPermission if metadata is invalid' , async ( ) => {
1122+ const { controller } = createController ( ) ;
1123+
1124+ const delegationParamsMock = {
1125+ ...DELEGATION_PARAMS_MOCK ,
1126+ data : {
1127+ ...JSON . parse ( DELEGATION_PARAMS_MOCK . data ) ,
1128+ metadata : { } ,
1129+ } ,
1130+ } ;
1131+
1132+ const delegationRequestMock = {
1133+ method : 'eth_signTypedData_v4' ,
1134+ params : [
1135+ '0x975e73efb9ff52e23bac7f7e043a1ecd06d05477' ,
1136+ delegationParamsMock . data ,
1137+ ] ,
1138+ jsonrpc : '2.0' ,
1139+ id : 1680528591 ,
1140+ origin : 'npm:@metamask/gator-permissions-snap' ,
1141+ networkClientId : 'mainnet' ,
1142+ tabId : 1048807182 ,
1143+ traceContext : null ,
1144+ } ;
1145+
1146+ await controller . newUnsignedTypedMessage (
1147+ delegationParamsMock ,
1148+ delegationRequestMock ,
1149+ SignTypedDataVersion . V4 ,
1150+ { parseJsonData : false } ,
1151+ ) ;
1152+
1153+ const { decodedPermission } =
1154+ controller . state . signatureRequests [ ID_MOCK ] ;
1155+
1156+ expect ( decodedPermission ) . toBeUndefined ( ) ;
1157+ } ) ;
1158+ } ) ;
1159+
9361160 describe ( 'decodeSignature' , ( ) => {
9371161 it ( 'invoke decodeSignature to get decoding data' , async ( ) => {
9381162 const MOCK_STATE_CHANGES = {
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