Function get

src/modules/pwdCache.js:145–169

(primaryKeyFpr, message)

 * @return {Promise<Object>} - password of key, if available unlocked key
 */
export async function get(primaryKeyFpr, message) {
  if (!await cache.has(primaryKeyFpr)) {
    return;
  }
  const entry = await cache.get(primaryKeyFpr);
  let operations = 1;
  if (message) {
    operations += getReservedOperations({key: entry.key, message});
  }
  entry.operations -= operations;
  entry.tlOperations -= operations;
  await cache.set(primaryKeyFpr, entry);
  if (!Math.max(0, entry.tlOperations)) {
    return;
  }
  if (Math.max(0, entry.operations)) {
    return {
      password: entry.password,
      key: entry.key
    };
  } else {
    // number of allowed operations exhausted
    deleteEntry(primaryKeyFpr);
  }
}

/**
 * Return true if key is cached