Move safe-chain package to packages/safe-chain

packages/safe-chain/src/scanning/malwareDatabase.js

@@ -0,0 +1,72 @@
+import {
+  fetchMalwareDatabase,
+  fetchMalwareDatabaseVersion,
+} from "../api/aikido.js";
+import {
+  readDatabaseFromLocalCache,
+  writeDatabaseToLocalCache,
+} from "../config/configFile.js";
+import { ui } from "../environment/userInteraction.js";
+
+export async function openMalwareDatabase() {
+  const malwareDatabase = await getMalwareDatabase();
+
+  function getPackageStatus(name, version) {
+    const packageData = malwareDatabase.find(
+      (pkg) =>
+        pkg.package_name === name &&
+        (pkg.version === version || pkg.version === "*")
+    );
+
+    if (!packageData) {
+      return MALWARE_STATUS_OK;
+    }
+
+    return packageData.reason;
+  }
+
+  return {
+    getPackageStatus,
+    isMalware: (name, version) => {
+      const status = getPackageStatus(name, version);
+      return isMalwareStatus(status);
+    },
+  };
+}
+
+async function getMalwareDatabase() {
+  const { malwareDatabase: cachedDatabase, version: cachedVersion } =
+    readDatabaseFromLocalCache();
+
+  try {
+    if (cachedDatabase) {
+      const currentVersion = await fetchMalwareDatabaseVersion();
+      if (cachedVersion === currentVersion) {
+        return cachedDatabase;
+      }
+    }
+
+    const { malwareDatabase, version } = await fetchMalwareDatabase();
+    writeDatabaseToLocalCache(malwareDatabase, version);
+
+    return malwareDatabase;
+  } catch (error) {
+    if (cachedDatabase) {
+      ui.writeWarning(
+        "Failed to fetch the latest malware database. Using cached version."
+      );
+      return cachedDatabase;
+    }
+    throw error;
+  }
+}
+
+function isMalwareStatus(status) {
+  let malwareStatus = status.toUpperCase();
+  return malwareStatus === MALWARE_STATUS_MALWARE;
+}
+
+export const MALWARE_STATUS_OK = "OK";
+export const MALWARE_STATUS_MALWARE = "MALWARE";
+export const MALWARE_STATUS_TELEMETRY = "TELEMETRY";
+export const MALWARE_STATUS_PROTESTWARE = "PROTESTWARE";