From 1454ac6bf2f4acd06300f7bef64e71a1829a364f Mon Sep 17 00:00:00 2001
From: Neeraj Gupta <254676+ua741@users.noreply.github.com>
Date: Mon, 20 Mar 2023 09:26:04 +0530
Subject: [PATCH] Add authenticator service to fetch and decrypt codes

---
 .../authenticator/authenticatorService.ts     | 91 +++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 src/services/authenticator/authenticatorService.ts

diff --git a/src/services/authenticator/authenticatorService.ts b/src/services/authenticator/authenticatorService.ts
new file mode 100644
index 000000000..ebe80149e
--- /dev/null
+++ b/src/services/authenticator/authenticatorService.ts
@@ -0,0 +1,91 @@
+import HTTPService from 'services/HTTPService';
+import { AuthEntity } from 'types/authenticator/auth_entity';
+import { Code } from 'types/authenticator/code';
+import ComlinkCryptoWorker from 'utils/comlink/ComlinkCryptoWorker';
+import { getEndpoint } from 'utils/common/apiUtil';
+import { getActualKey, getToken } from 'utils/common/key';
+import { logError } from 'utils/sentry';
+
+const ENDPOINT = getEndpoint();
+export const getAuthCodes = async (): Promise<Code[]> => {
+    const masterKey = await getActualKey();
+    try {
+        const authKeyData = await getAuthKey();
+        const cryptoWorker = await ComlinkCryptoWorker.getInstance();
+        const authentitorKey = await cryptoWorker.decryptB64(
+            authKeyData.encryptedKey,
+            authKeyData.header,
+            masterKey
+        );
+        // always fetch all data from server for now
+        const authEntity: AuthEntity[] = await getDiff(0);
+        const authCodes = await Promise.all(
+            authEntity
+                .filter((f) => !f.isDeleted)
+                .map(async (entity) => {
+                    const decryptedCode = await cryptoWorker.decryptMetadata(
+                        entity.encryptedData,
+                        entity.header,
+                        authentitorKey
+                    );
+                    return Code.fromRawData(entity.id, decryptedCode);
+                })
+        );
+        // sort by issuer name which can be undefined also
+        authCodes.sort((a, b) => {
+            if (a.issuer && b.issuer) {
+                return a.issuer.localeCompare(b.issuer);
+            }
+            if (a.issuer) {
+                return -1;
+            }
+            if (b.issuer) {
+                return 1;
+            }
+            return 0;
+        });
+        return authCodes;
+    } catch (e) {
+        logError(e, 'get authenticator entities failed');
+        throw e;
+    }
+};
+
+export const getAuthKey = async () => {
+    try {
+        const resp = await HTTPService.get(
+            `${ENDPOINT}/authenticator/key`,
+            {},
+            {
+                'X-Auth-Token': getToken(),
+            }
+        );
+        return resp.data;
+    } catch (e) {
+        logError(e, 'Get key failed');
+        throw e;
+    }
+};
+
+// return a promise which resolves to list of AuthEnitity
+export const getDiff = async (
+    sinceTime: number,
+    limit = 2500
+): Promise<AuthEntity[]> => {
+    try {
+        const resp = await HTTPService.get(
+            `${ENDPOINT}/authenticator/entity/diff`,
+            {
+                sinceTime,
+                limit,
+            },
+            {
+                'X-Auth-Token': getToken(),
+            }
+        );
+        return resp.data.diff;
+    } catch (e) {
+        logError(e, 'Get diff failed');
+        throw e;
+    }
+};