flow like the river

BACK_BACK/node_modules/mongodb/lib/cmap/auth/mongocr.js

@@ -0,0 +1,35 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.MongoCR = void 0;
+const crypto = require("crypto");
+const error_1 = require("../../error");
+const utils_1 = require("../../utils");
+const auth_provider_1 = require("./auth_provider");
+class MongoCR extends auth_provider_1.AuthProvider {
+    async auth(authContext) {
+        const { connection, credentials } = authContext;
+        if (!credentials) {
+            throw new error_1.MongoMissingCredentialsError('AuthContext must provide credentials.');
+        }
+        const { username, password, source } = credentials;
+        const { nonce } = await connection.command((0, utils_1.ns)(`${source}.$cmd`), { getnonce: 1 }, undefined);
+        const hashPassword = crypto
+            .createHash('md5')
+            .update(`${username}:mongo:${password}`, 'utf8')
+            .digest('hex');
+        // Final key
+        const key = crypto
+            .createHash('md5')
+            .update(`${nonce}${username}${hashPassword}`, 'utf8')
+            .digest('hex');
+        const authenticateCommand = {
+            authenticate: 1,
+            user: username,
+            nonce,
+            key
+        };
+        await connection.command((0, utils_1.ns)(`${source}.$cmd`), authenticateCommand, undefined);
+    }
+}
+exports.MongoCR = MongoCR;
+//# sourceMappingURL=mongocr.js.map