feat: adds verify data rpc method (#133)

* feat: add verifyData rpc method * feat: add testVC generation, fix verifyData tests * fix: update createTestVCs function * fix: update tests to use generated testVC * fix: move test constants for VC creation * chore: remove some // eslint-disable comments * fix: remove unnecessary meta field --------- Co-authored-by: martines3000 <domajnko.martin@gmail.com>
blockchain-lab-um · Mar 14, 2023 · 48b8a44 · 48b8a44
1 parent 8cd8a7a
commit 48b8a44
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Showing 13 changed files with 680 additions and 167 deletions.
diff --git a/packages/snap/.eslintrc.js b/packages/snap/.eslintrc.js
@@ -6,7 +6,11 @@ module.exports = {
       files: ['tests/**/*.ts'],
       plugins: ['jest'],
       extends: ['plugin:jest/recommended'],
-      rules: { 'jest/prefer-expect-assertions': 'off' },
+      rules: {
+        'jest/prefer-expect-assertions': 'off',
+        '@typescript-eslint/no-unsafe-assignment': 'off',
+        '@typescript-eslint/no-explicit-any': 'off',
+      },
       env: { jest: true },
     },
   ],

diff --git a/packages/snap/snap.manifest.json b/packages/snap/snap.manifest.json
@@ -7,7 +7,7 @@
     "url": "https://github.com/blockchain-lab-um/ssi-snap.git"
   },
   "source": {
-    "shasum": "pDJPc8SMEbcubigAumQtNEO+0ETsKwsphZiabVJfzpc=",
+    "shasum": "G298n15J/o5OYCTwpitWR2cSqr8jqgL5OFCCwe5UvlI=",
     "location": {
       "npm": {
         "filePath": "dist/snap.js",

diff --git a/packages/snap/src/index.ts b/packages/snap/src/index.ts
@@ -11,6 +11,7 @@ import { createVP } from './rpc/vc/createVP';
 import { deleteVC } from './rpc/vc/deleteVC';
 import { queryVCs } from './rpc/vc/queryVCs';
 import { saveVC } from './rpc/vc/saveVC';
+import { verifyData } from './rpc/vc/verifyData';
 import { getAvailableVCStores } from './rpc/vcStore/getAvailableVCStores';
 import { setVCStore } from './rpc/vcStore/setVCStore';
 import { getAddressKeyDeriver } from './utils/keyPair';
@@ -22,6 +23,7 @@ import {
   isValidSaveVCRequest,
   isValidSetVCStoreRequest,
   isValidSwitchMethodRequest,
+  isValidVerifyDataRequest,
 } from './utils/params';
 import { getCurrentAccount, setAccountPublicKey } from './utils/snapUtils';
 import {
@@ -118,6 +120,10 @@ export const onRpcRequest: OnRpcRequestHandler = async ({
         isValidResolveDIDRequest(request.params);
         res = await resolveDID(request.params.did);
         return ResultObject.success(res);
+      case 'verifyData':
+        isValidVerifyDataRequest(request.params);
+        res = await verifyData(apiParams, request.params);
+        return ResultObject.success(res);
       default:
         throw new Error('Method not found.');
     }

diff --git a/packages/snap/src/rpc/vc/verifyData.ts b/packages/snap/src/rpc/vc/verifyData.ts
@@ -0,0 +1,21 @@
+import { VerifyDataRequestParams } from '@blockchain-lab-um/ssi-snap-types';
+import { IVerifyResult } from '@veramo/core';
+
+import { ApiParams } from '../../interfaces';
+import { veramoVerifyData } from '../../utils/veramoUtils';
+
+export async function verifyData(
+  params: ApiParams,
+  args: VerifyDataRequestParams
+): Promise<boolean | IVerifyResult> {
+  const { snap, ethereum } = params;
+  const verbose = args.verbose || false;
+
+  const res = await veramoVerifyData({
+    snap,
+    ethereum,
+    data: args,
+  });
+  if (res.error) throw res.error as Error;
+  return verbose ? res : res.verified;
+}
diff --git a/packages/snap/src/utils/params.ts b/packages/snap/src/utils/params.ts
@@ -7,6 +7,7 @@ import {
   SaveVCRequestParams,
   SetVCStoreRequestParams,
   SwitchMethodRequestParams,
+  VerifyDataRequestParams,
   isAvailableMethods,
   isAvailableVCStores,
   isSupportedProofFormat,
@@ -327,3 +328,18 @@ export function isValidResolveDIDRequest(
 
   throw new Error('Invalid ResolveDID request');
 }
+
+export function isValidVerifyDataRequest(
+  params: unknown
+): asserts params is VerifyDataRequestParams {
+  const param = params as VerifyDataRequestParams;
+  if (
+    param !== null &&
+    typeof param === 'object' &&
+    (('credential' in param && param.credential !== null) ||
+      ('presentation' in param && param.presentation !== null))
+  )
+    return;
+
+  throw new Error('Invalid VerifyData request');
+}
diff --git a/packages/snap/src/utils/veramoUtils.ts b/packages/snap/src/utils/veramoUtils.ts
@@ -3,6 +3,7 @@ import {
   CreateVPRequestParams,
   QueryVCsOptions,
   QueryVCsRequestResult,
+  VerifyDataRequestParams,
 } from '@blockchain-lab-um/ssi-snap-types';
 import {
   Filter,
@@ -13,6 +14,7 @@ import { MetaMaskInpageProvider } from '@metamask/providers';
 import { SnapsGlobalObject } from '@metamask/snaps-types';
 import {
   IIdentifier,
+  IVerifyResult,
   MinimalImportableKey,
   VerifiablePresentation,
   W3CVerifiableCredential,
@@ -204,3 +206,35 @@ export async function veramoCreateVP(
   }
   return null;
 }
+
+export async function veramoVerifyData(args: {
+  snap: SnapsGlobalObject;
+  ethereum: MetaMaskInpageProvider;
+  data: VerifyDataRequestParams;
+}): Promise<IVerifyResult> {
+  try {
+    const { snap, ethereum, data } = args;
+    const { credential, presentation } = data;
+
+    const agent = await getAgent(snap, ethereum);
+
+    if (credential) {
+      const vcResult = (await agent.verifyCredential({
+        credential,
+      })) as IVerifyResult;
+      return vcResult;
+    }
+    if (presentation) {
+      const vpResult = (await agent.verifyPresentation({
+        presentation,
+      })) as IVerifyResult;
+      return vpResult;
+    }
+    return {
+      verified: false,
+      error: new Error('No valid credential or presentation.'),
+    } as IVerifyResult;
+  } catch (error: unknown) {
+    return { verified: false, error: error as Error } as IVerifyResult;
+  }
+}