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config_test.go
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config_test.go
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// inexpugnable - an esmtp server
// Copyright (c) 2021, 2023 Michael D Henderson
// Copyright (c) 2016-2019 GuerrillaMail.com.
package inexpugnable
import (
"github.com/mdhender/inexpugnable/backends"
"github.com/mdhender/inexpugnable/log"
"github.com/mdhender/inexpugnable/tests/testcert"
"io/ioutil"
"os"
"strings"
"testing"
"time"
)
// a configuration file with a dummy backend
var configJsonA = `
{
"log_file" : "./tests/testlog",
"log_level" : "debug",
"pid_file" : "tests/go-guerrilla.pid",
"allowed_hosts": ["spam4.me","grr.la"],
"backend_config" :
{
"log_received_mails" : true
},
"servers" : [
{
"is_enabled" : true,
"host_name":"mail.guerrillamail.com",
"max_size": 100017,
"timeout":160,
"listen_interface":"127.0.0.1:2526",
"max_clients": 2,
"tls" : {
"start_tls_on":false,
"tls_always_on":false,
"private_key_file":"config_test.go",
"public_key_file":"config_test.go"
}
},
{
"is_enabled" : true,
"host_name":"mail2.guerrillamail.com",
"max_size":1000001,
"timeout":180,
"listen_interface":"127.0.0.1:2527",
"max_clients":1,
"tls" : {
"private_key_file":"./tests/mail2.guerrillamail.com.key.pem",
"public_key_file":"./tests/mail2.guerrillamail.com.cert.pem",
"tls_always_on":false,
"start_tls_on":true
}
},
{
"is_enabled" : true,
"host_name":"mail.stopme.com",
"max_size": 100017,
"timeout":160,
"listen_interface":"127.0.0.1:9999",
"max_clients": 2,
"tls" : {
"private_key_file":"config_test.go",
"public_key_file":"config_test.go",
"start_tls_on":false,
"tls_always_on":false
}
},
{
"is_enabled" : true,
"host_name":"mail.disableme.com",
"max_size": 100017,
"timeout":160,
"listen_interface":"127.0.0.1:3333",
"max_clients": 2,
"tls" : {
"private_key_file":"config_test.go",
"public_key_file":"config_test.go",
"start_tls_on":false,
"tls_always_on":false
}
}
]
}
`
// B is A's configuration with different values from B
// 127.0.0.1:4654 will be added
// A's 127.0.0.1:3333 is disabled
// B's 127.0.0.1:9999 is removed
var configJsonB = `
{
"log_file" : "./tests/testlog",
"log_level" : "debug",
"pid_file" : "tests/different-go-guerrilla.pid",
"allowed_hosts": ["spam4.me","grr.la","newhost.com"],
"backend_config" :
{
"log_received_mails" : true
},
"servers" : [
{
"is_enabled" : true,
"host_name":"mail.guerrillamail.com",
"max_size": 100017,
"timeout":161,
"listen_interface":"127.0.0.1:2526",
"max_clients": 3,
"tls" : {
"private_key_file":"./tests/mail2.guerrillamail.com.key.pem",
"public_key_file": "./tests/mail2.guerrillamail.com.cert.pem",
"start_tls_on":false,
"tls_always_on":true
}
},
{
"is_enabled" : true,
"host_name":"mail2.guerrillamail.com",
"max_size": 100017,
"timeout":160,
"listen_interface":"127.0.0.1:2527",
"log_file" : "./tests/testlog",
"max_clients": 2,
"tls" : {
"private_key_file":"./tests/mail2.guerrillamail.com.key.pem",
"public_key_file": "./tests/mail2.guerrillamail.com.cert.pem",
"start_tls_on":true,
"tls_always_on":false
}
},
{
"is_enabled" : true,
"host_name":"mail.guerrillamail.com",
"max_size":1000001,
"timeout":180,
"listen_interface":"127.0.0.1:4654",
"max_clients":1,
"tls" : {
"private_key_file":"config_test.go",
"public_key_file":"config_test.go",
"start_tls_on":false,
"tls_always_on":false
}
},
{
"is_enabled" : false,
"host_name":"mail.disbaleme.com",
"max_size": 100017,
"timeout":160,
"listen_interface":"127.0.0.1:3333",
"max_clients": 2,
"tls" : {
"private_key_file":"config_test.go",
"public_key_file":"config_test.go",
"start_tls_on":false,
"tls_always_on":false
}
}
]
}
`
func TestConfigLoad(t *testing.T) {
if err := testcert.GenerateCert("mail2.guerrillamail.com", "", 365*24*time.Hour, false, 2048, "P256", "./tests/"); err != nil {
t.Error(err)
}
defer func() {
if err := deleteIfExists("../tests/mail2.guerrillamail.com.cert.pem"); err != nil {
t.Error(err)
}
if err := deleteIfExists("../tests/mail2.guerrillamail.com.key.pem"); err != nil {
t.Error(err)
}
}()
ac := &AppConfig{}
if err := ac.Load([]byte(configJsonA)); err != nil {
t.Error("Cannot load config |", err)
t.SkipNow()
}
expectedLen := 4
if len(ac.Servers) != expectedLen {
t.Error("len(ac.Servers), expected", expectedLen, "got", len(ac.Servers))
t.SkipNow()
}
// did we got the timestamps?
if ac.Servers[0].TLS._privateKeyFileMtime <= 0 {
t.Error("failed to read timestamp for _privateKeyFileMtime, got", ac.Servers[0].TLS._privateKeyFileMtime)
}
}
// Test the sample config to make sure a valid one is given!
func TestSampleConfig(t *testing.T) {
fileName := "goguerrilla.conf.sample"
if jsonBytes, err := ioutil.ReadFile(fileName); err == nil {
ac := &AppConfig{}
if err := ac.Load(jsonBytes); err != nil {
// sample config can have broken tls certs
if strings.Index(err.Error(), "cannot use TLS config for [127.0.0.1:25") != 0 {
t.Error("Cannot load config", fileName, "|", err)
t.FailNow()
}
}
} else {
t.Error("Error reading", fileName, "|", err)
}
}
// make sure that we get all the config change events
func TestConfigChangeEvents(t *testing.T) {
if err := testcert.GenerateCert("mail2.guerrillamail.com", "", 365*24*time.Hour, false, 2048, "P256", "./tests/"); err != nil {
t.Error(err)
}
defer func() {
if err := deleteIfExists("../tests/mail2.guerrillamail.com.cert.pem"); err != nil {
t.Error(err)
}
if err := deleteIfExists("../tests/mail2.guerrillamail.com.key.pem"); err != nil {
t.Error(err)
}
}()
oldconf := &AppConfig{}
if err := oldconf.Load([]byte(configJsonA)); err != nil {
t.Error(err)
}
logger, _ := log.GetLogger(oldconf.LogFile, oldconf.LogLevel)
bcfg := backends.BackendConfig{"log_received_mails": true}
backend, err := backends.New(bcfg, logger)
if err != nil {
t.Error("cannot create backend", err)
}
app, err := New(oldconf, backend, logger)
if err != nil {
t.Error("cannot create daemon", err)
}
// simulate timestamp change
time.Sleep(time.Second + time.Millisecond*500)
if err := os.Chtimes(oldconf.Servers[1].TLS.PrivateKeyFile, time.Now(), time.Now()); err != nil {
t.Error(err)
}
if err := os.Chtimes(oldconf.Servers[1].TLS.PublicKeyFile, time.Now(), time.Now()); err != nil {
t.Error(err)
}
newconf := &AppConfig{}
if err := newconf.Load([]byte(configJsonB)); err != nil {
t.Error(err)
}
newconf.Servers[0].LogFile = log.OutputOff.String() // test for log file change
newconf.LogLevel = log.InfoLevel.String()
newconf.LogFile = "off"
expectedEvents := map[Event]bool{
EventConfigPidFile: false,
EventConfigLogFile: false,
EventConfigLogLevel: false,
EventConfigAllowedHosts: false,
EventConfigServerNew: false, // 127.0.0.1:4654 will be added
EventConfigServerRemove: false, // 127.0.0.1:9999 server removed
EventConfigServerStop: false, // 127.0.0.1:3333: server (disabled)
EventConfigServerLogFile: false, // 127.0.0.1:2526
EventConfigServerLogReopen: false, // 127.0.0.1:2527
EventConfigServerTimeout: false, // 127.0.0.1:2526 timeout
//"server_change:tls_config": false, // 127.0.0.1:2526
EventConfigServerMaxClients: false, // 127.0.0.1:2526
EventConfigServerTLSConfig: false, // 127.0.0.1:2527 timestamp changed on certificates
}
toUnsubscribe := map[Event]func(c *AppConfig){}
toUnsubscribeSrv := map[Event]func(c *ServerConfig){}
for event := range expectedEvents {
// Put in anon func since range is overwriting event
func(e Event) {
if strings.Contains(e.String(), "config_change") {
f := func(c *AppConfig) {
expectedEvents[e] = true
}
_ = app.Subscribe(event, f)
toUnsubscribe[event] = f
} else {
// must be a server config change then
f := func(c *ServerConfig) {
expectedEvents[e] = true
}
_ = app.Subscribe(event, f)
toUnsubscribeSrv[event] = f
}
}(event)
}
// emit events
newconf.EmitChangeEvents(oldconf, app)
// unsubscribe
for unevent, unfun := range toUnsubscribe {
_ = app.Unsubscribe(unevent, unfun)
}
for unevent, unfun := range toUnsubscribeSrv {
_ = app.Unsubscribe(unevent, unfun)
}
for event, val := range expectedEvents {
if val == false {
t.Error("Did not fire config change event:", event)
t.FailNow()
}
}
// don't forget to reset
if err := os.Truncate(oldconf.LogFile, 0); err != nil {
t.Error(err)
}
}