when provisioning a new account on hosted system, automatically add hello-world and dial-time apps

db/generate-beta-invite-codes.js

@@ -0,0 +1,40 @@
+#!/usr/bin/env node
+const crypto = require('crypto');
+const {promisePool} = require('../lib/db');
+const sql = 'INSERT INTO beta_invite_codes (invite_code) VALUES (?);';
+
+const rand_string = (n) => {
+  if (n <= 0) {
+    return '';
+  }
+  var rs = '';
+  try {
+    rs = crypto.randomBytes(Math.ceil(n/2)).toString('hex').slice(0,n);
+    /* note: could do this non-blocking, but still might fail */
+  }
+  catch (ex) {
+    /* known exception cause: depletion of entropy info for randomBytes */
+    console.error('Exception generating random string: ' + ex);
+    /* weaker random fallback */
+    rs = '';
+    var r = n % 8, q = (n - r) / 8, i;
+    for (i = 0; i < q; i++) {
+      rs += Math.random().toString(16).slice(2);
+    }
+    if (r > 0) {
+      rs += Math.random().toString(16).slice(2, i);
+    }
+  }
+  return rs;
+};
+
+const doIt = async(len) => {
+  for (let i = 0; i < 50; i++) {
+    const val = rand_string(len).toUpperCase();
+    await promisePool.execute(sql, [val]);
+  }
+  process.exit(0);
+};
+
+doIt(6);
+