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|
/*
* config_test.go - Tests the processing of the config file
*
* Copyright 2017 Google Inc.
* Author: Joe Richey (joerichey@google.com)
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package metadata
import (
"bytes"
"encoding/json"
"testing"
"google.golang.org/protobuf/proto"
)
var testConfig = &Config{
Source: SourceType_custom_passphrase,
HashCosts: &HashingCosts{
Time: 10,
Memory: 1 << 12,
Parallelism: 8,
TruncationFixed: true,
},
Options: DefaultOptions,
}
var testConfigString = `{
"source": "custom_passphrase",
"hash_costs": {
"time": "10",
"memory": "4096",
"parallelism": "8",
"truncation_fixed": true
},
"options": {
"padding": "32",
"contents": "AES_256_XTS",
"filenames": "AES_256_CTS",
"policy_version": "1"
},
"use_fs_keyring_for_v1_policies": false,
"allow_cross_user_metadata": false
}
`
// Used for JSON string comparison while ignoring whitespace
func compact(t testing.TB, s string) string {
var b bytes.Buffer
if err := json.Compact(&b, []byte(s)); err != nil {
t.Fatalf("failed to compact json: %v", err)
}
return b.String()
}
// Makes sure that writing a config and reading it back gives the same thing.
func TestWrite(t *testing.T) {
var b bytes.Buffer
err := WriteConfig(testConfig, &b)
if err != nil {
t.Fatal(err)
}
t.Logf("json encoded config:\n%s", b.String())
if compact(t, b.String()) != compact(t, testConfigString) {
t.Errorf("did not match: %s", testConfigString)
}
}
func TestRead(t *testing.T) {
buf := bytes.NewBufferString(testConfigString)
cfg, err := ReadConfig(buf)
if err != nil {
t.Fatal(err)
}
t.Logf("decoded config:\n%s", cfg)
if !proto.Equal(cfg, testConfig) {
t.Errorf("did not match: %s", testConfig)
}
}
// Makes sure we can parse a legacy config file that doesn't have the fields
// that were added later and that has the removed "compatibility" field.
func TestOptionalFields(t *testing.T) {
contents := `{
"source": "custom_passphrase",
"hash_costs": {
"time": "10",
"memory": "4096",
"parallelism": "8"
},
"compatibility": "legacy",
"options": {
"padding": "32",
"contents": "AES_256_XTS",
"filenames": "AES_256_CTS"
}
}
`
buf := bytes.NewBufferString(contents)
cfg, err := ReadConfig(buf)
if err != nil {
t.Fatal(err)
}
if cfg.GetUseFsKeyringForV1Policies() {
t.Error("use_fs_keyring_for_v1_policies should be false, but was true")
}
if cfg.Options.PolicyVersion != 0 {
t.Errorf("policy version should be 0, but was %d", cfg.Options.PolicyVersion)
}
if err = cfg.CheckValidity(); err != nil {
t.Error(err)
}
// CheckValidity() should change an unset policy version to 1.
if cfg.Options.PolicyVersion != 1 {
t.Errorf("policy version should be 1 now, but was %d", cfg.Options.PolicyVersion)
}
}
|
