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config_test.go
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package guerrilla
import (
"bufio"
"bytes"
log "github.com/Sirupsen/logrus"
"github.com/flashmob/go-guerrilla/backends"
"github.com/flashmob/go-guerrilla/tests/testcert"
"io/ioutil"
"os"
"strings"
"testing"
"time"
)
func init() {
testcert.GenerateCert("mail2.guerrillamail.com", "", 365*24*time.Hour, false, 2048, "P256", "./tests/")
}
// a configuration file with a dummy backend
//
var configJsonA = `
{
"pid_file" : "/var/run/go-guerrilla.pid",
"allowed_hosts": ["spam4.me","grr.la"],
"backend_name" : "dummy",
"backend_config" :
{
"log_received_mails" : true
},
"servers" : [
{
"is_enabled" : true,
"host_name":"mail.guerrillamail.com",
"max_size": 100017,
"private_key_file":"config_test.go",
"public_key_file":"config_test.go",
"timeout":160,
"listen_interface":"127.0.0.1:2526",
"start_tls_on":true,
"tls_always_on":false,
"max_clients": 2,
"log_file":"/dev/stdout"
},
{
"is_enabled" : true,
"host_name":"mail2.guerrillamail.com",
"max_size":1000001,
"private_key_file":"./tests/mail2.guerrillamail.com.key.pem",
"public_key_file":"./tests/mail2.guerrillamail.com.cert.pem",
"timeout":180,
"listen_interface":"127.0.0.1:2527",
"start_tls_on":true,
"tls_always_on":false,
"max_clients":1,
"log_file":"/dev/stdout"
},
{
"is_enabled" : true,
"host_name":"mail.stopme.com",
"max_size": 100017,
"private_key_file":"config_test.go",
"public_key_file":"config_test.go",
"timeout":160,
"listen_interface":"127.0.0.1:9999",
"start_tls_on":true,
"tls_always_on":false,
"max_clients": 2,
"log_file":"/dev/stdout"
},
{
"is_enabled" : true,
"host_name":"mail.disableme.com",
"max_size": 100017,
"private_key_file":"config_test.go",
"public_key_file":"config_test.go",
"timeout":160,
"listen_interface":"127.0.0.1:3333",
"start_tls_on":true,
"tls_always_on":false,
"max_clients": 2,
"log_file":"/dev/stdout"
}
]
}
`
// 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 = `
{
"pid_file" : "/var/run/different-go-guerrilla.pid",
"allowed_hosts": ["spam4.me","grr.la","newhost.com"],
"backend_name" : "dummy",
"backend_config" :
{
"log_received_mails" : true
},
"servers" : [
{
"is_enabled" : true,
"host_name":"mail.guerrillamail.com",
"max_size": 100017,
"private_key_file":"config_test.go",
"public_key_file":"config_test.go",
"timeout":161,
"listen_interface":"127.0.0.1:2526",
"start_tls_on":false,
"tls_always_on":true,
"max_clients": 3,
"log_file":"/var/log/smtpd.log"
},
{
"is_enabled" : true,
"host_name":"mail2.guerrillamail.com",
"max_size": 100017,
"private_key_file":"./tests/mail2.guerrillamail.com.key.pem",
"public_key_file": "./tests/mail2.guerrillamail.com.cert.pem",
"timeout":160,
"listen_interface":"127.0.0.1:2527",
"start_tls_on":true,
"tls_always_on":false,
"max_clients": 2,
"log_file":"/dev/stdout"
},
{
"is_enabled" : true,
"host_name":"mail.guerrillamail.com",
"max_size":1000001,
"private_key_file":"config_test.go",
"public_key_file":"config_test.go",
"timeout":180,
"listen_interface":"127.0.0.1:4654",
"start_tls_on":false,
"tls_always_on":true,
"max_clients":1,
"log_file":"/dev/stdout"
},
{
"is_enabled" : false,
"host_name":"mail.disbaleme.com",
"max_size": 100017,
"private_key_file":"config_test.go",
"public_key_file":"config_test.go",
"timeout":160,
"listen_interface":"127.0.0.1:3333",
"start_tls_on":true,
"tls_always_on":false,
"max_clients": 2,
"log_file":"/dev/stdout"
}
]
}
`
func TestConfigLoad(t *testing.T) {
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]._privateKeyFile_mtime <= 0 {
t.Error("failed to read timestamp for _privateKeyFile_mtime, got", ac.Servers[0]._privateKeyFile_mtime)
}
}
// 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(), "could not stat key") != 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) {
// hold the output of logs
var logBuffer bytes.Buffer
// logs redirected to this writer
var logOut *bufio.Writer
// read the logs
var logIn *bufio.Reader
logOut = bufio.NewWriter(&logBuffer)
logIn = bufio.NewReader(&logBuffer)
log.SetLevel(log.DebugLevel)
//log.SetOutput(os.Stdout)
log.SetOutput(logOut)
oldconf := &AppConfig{}
oldconf.Load([]byte(configJsonA))
bcfg := backends.BackendConfig{"log_received_mails": true}
backend, _ := backends.New("dummy", bcfg)
app, _ := New(oldconf, backend)
// simulate timestamp change
time.Sleep(time.Second + time.Millisecond*500)
os.Chtimes(oldconf.Servers[1].PrivateKeyFile, time.Now(), time.Now())
os.Chtimes(oldconf.Servers[1].PublicKeyFile, time.Now(), time.Now())
newconf := &AppConfig{}
newconf.Load([]byte(configJsonB))
expectedEvents := map[string]bool{
"config_change:pid_file": false,
"config_change:allowed_hosts": false,
"server_change:new_server": false, // 127.0.0.1:4654 will be added
"server_change:remove_server": false, // 127.0.0.1:9999 server removed
"server_change:stop_server": false, // 127.0.0.1:3333: server (disabled)
"server_change:127.0.0.1:2526:new_log_file": false,
"server_change:127.0.0.1:2527:reopen_log_file": false,
"server_change:timeout": false, // 127.0.0.1:2526 timeout
//"server_change:tls_config": false, // 127.0.0.1:2526
"server_change:max_clients": false, // 127.0.0.1:2526
"server_change:tls_config": false, // 127.0.0.1:2527 timestamp changed on certificates
}
toUnsubscribe := map[string]func(c *AppConfig){}
toUnsubscribeS := map[string]func(c *ServerConfig){}
for event := range expectedEvents {
// Put in anon func since range is overwriting event
func(e string) {
if strings.Index(e, "config_change") != -1 {
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)
toUnsubscribeS[event] = f
}
}(event)
}
// emit events
newconf.EmitChangeEvents(oldconf, app)
// unsubscribe
for unevent, unfun := range toUnsubscribe {
app.Unsubscribe(unevent, unfun)
}
for unevent, unfun := range toUnsubscribeS {
app.Unsubscribe(unevent, unfun)
}
for event, val := range expectedEvents {
if val == false {
t.Error("Did not fire config change event:", event)
t.FailNow()
break
}
}
// don't forget to reset
logBuffer.Reset()
logIn.Reset(&logBuffer)
}