Rework cli

internal/cli/access.go

@@ -12,6 +12,10 @@ import (
 	"strconv"
 	"strings"
 	"sync"
+
+	"github.com/9seconds/mtg/v2/internal/config"
+	"github.com/9seconds/mtg/v2/internal/utils"
+	"github.com/9seconds/mtg/v2/mtglib"
 )
 
 type accessResponse struct {
@@ -33,8 +37,7 @@ type accessResponseURLs struct {
 }
 
 type Access struct {
-	base
-
+	ConfigPath string `kong:"arg,required,type='existingfile',help='Path to the configuration file.',name='config-path'"`                 // nolint: lll
 	PublicIPv4 net.IP `kong:"help='Public IPv4 address for proxy. By default it is resolved via remote website',name='ipv4',short='i'"`   // nolint: lll
 	PublicIPv6 net.IP `kong:"help='Public IPv6 address for proxy. By default it is resolved via remote website',name='ipv6',short='I'"`   // nolint: lll
 	Port       uint   `kong:"help='Port number. Default port is taken from configuration file, bind-to parameter',type:'uint',short='p'"` // nolint: lll
@@ -42,17 +45,19 @@ type Access struct {
 }
 
 func (c *Access) Run(cli *CLI, version string) error {
-	if err := c.ReadConfig(version); err != nil {
+	conf, err := utils.ReadConfig(c.ConfigPath)
+	if err != nil {
 		return fmt.Errorf("cannot init config: %w", err)
 	}
 
-	return c.Execute(cli)
-}
-
-func (c *Access) Execute(cli *CLI) error {
 	resp := &accessResponse{}
-	resp.Secret.Base64 = c.Config.Secret.Base64()
-	resp.Secret.Hex = c.Config.Secret.Hex()
+	resp.Secret.Base64 = conf.Secret.Base64()
+	resp.Secret.Hex = conf.Secret.Hex()
+
+	ntw, err := makeNetwork(conf, version)
+	if err != nil {
+		return fmt.Errorf("cannot init network: %w", err)
+	}
 
 	wg := &sync.WaitGroup{}
 	wg.Add(2) // nolint: gomnd
@@ -60,31 +65,31 @@ func (c *Access) Execute(cli *CLI) error {
 	go func() {
 		defer wg.Done()
 
-		ip := cli.Access.PublicIPv4
+		ip := c.PublicIPv4
 		if ip == nil {
-			ip = c.getIP("tcp4")
+			ip = c.getIP(ntw, "tcp4")
 		}
 
 		if ip != nil {
 			ip = ip.To4()
 		}
 
-		resp.IPv4 = c.makeURLs(ip, cli)
+		resp.IPv4 = c.makeURLs(conf, ip)
 	}()
 
 	go func() {
 		defer wg.Done()
 
-		ip := cli.Access.PublicIPv6
+		ip := c.PublicIPv6
 		if ip == nil {
-			ip = c.getIP("tcp6")
+			ip = c.getIP(ntw, "tcp6")
 		}
 
 		if ip != nil {
 			ip = ip.To16()
 		}
 
-		resp.IPv6 = c.makeURLs(ip, cli)
+		resp.IPv6 = c.makeURLs(conf, ip)
 	}()
 
 	wg.Wait()
@@ -100,9 +105,9 @@ func (c *Access) Execute(cli *CLI) error {
 	return nil
 }
 
-func (c *Access) getIP(protocol string) net.IP {
-	client := c.Network.MakeHTTPClient(func(ctx context.Context, network, address string) (net.Conn, error) {
-		return c.Network.DialContext(ctx, protocol, address) // nolint: wrapcheck
+func (c *Access) getIP(ntw mtglib.Network, protocol string) net.IP {
+	client := ntw.MakeHTTPClient(func(ctx context.Context, network, address string) (net.Conn, error) {
+		return ntw.DialContext(ctx, protocol, address) // nolint: wrapcheck
 	})
 
 	req, err := http.NewRequest(http.MethodGet, "https://ifconfig.co", nil) // nolint: noctx
@@ -134,24 +139,24 @@ func (c *Access) getIP(protocol string) net.IP {
 	return net.ParseIP(strings.TrimSpace(string(data)))
 }
 
-func (c *Access) makeURLs(ip net.IP, cli *CLI) *accessResponseURLs {
+func (c *Access) makeURLs(conf *config.Config, ip net.IP) *accessResponseURLs {
 	if ip == nil {
 		return nil
 	}
 
-	portNo := cli.Access.Port
+	portNo := c.Port
 	if portNo == 0 {
-		portNo = c.Config.BindTo.PortValue(0)
+		portNo = conf.BindTo.Port
 	}
 
 	values := url.Values{}
 	values.Set("server", ip.String())
 	values.Set("port", strconv.Itoa(int(portNo)))
 
-	if cli.Access.Hex {
-		values.Set("secret", c.Config.Secret.Hex())
+	if c.Hex {
+		values.Set("secret", conf.Secret.Hex())
 	} else {
-		values.Set("secret", c.Config.Secret.Base64())
+		values.Set("secret", conf.Secret.Base64())
 	}
 
 	urlQuery := values.Encode()
@@ -171,22 +176,8 @@ func (c *Access) makeURLs(ip net.IP, cli *CLI) *accessResponseURLs {
 			RawQuery: urlQuery,
 		}).String(),
 	}
-	rv.TgQrCode = c.makeQRCode(rv.TgURL)
-	rv.TmeQrCode = c.makeQRCode(rv.TmeURL)
+	rv.TgQrCode = utils.MakeQRCodeURL(rv.TgURL)
+	rv.TmeQrCode = utils.MakeQRCodeURL(rv.TmeURL)
 
 	return rv
 }
-
-func (c *Access) makeQRCode(data string) string {
-	values := url.Values{}
-	values.Set("qzone", "4")
-	values.Set("format", "svg")
-	values.Set("data", data)
-
-	return (&url.URL{
-		Scheme:   "https",
-		Host:     "api.qrserver.com",
-		Path:     "v1/create-qr-code",
-		RawQuery: values.Encode(),
-	}).String()
-}

internal/cli/access_test.go

@@ -1,197 +0,0 @@
-package cli_test
-
-import (
-	"net"
-	"net/http"
-	"testing"
-
-	"github.com/9seconds/mtg/v2/internal/config"
-	"github.com/9seconds/mtg/v2/internal/testlib"
-	"github.com/9seconds/mtg/v2/mtglib"
-	"github.com/jarcoal/httpmock"
-	"github.com/stretchr/testify/suite"
-	"github.com/xeipuuv/gojsonschema"
-)
-
-var accressResponseJSONSchema = func() *gojsonschema.Schema {
-	schema, err := gojsonschema.NewSchema(gojsonschema.NewStringLoader(`
-{
-    "type": "object",
-    "required": ["secret"],
-    "additionalProperties": true,
-    "properties": {
-        "secret": {
-            "type": "object",
-            "required": [
-                "hex",
-                "base64"
-            ],
-            "additionalProperties": false,
-            "properties": {
-                "hex": {
-                    "type": "string",
-                    "minLength": 34
-                },
-                "base64": {
-                    "type": "string",
-                    "minLength": 10
-                }
-            }
-        },
-        "ipv4": {
-            "$ref": "#/definitions/ip"
-        },
-        "ipv6": {
-            "$ref": "#/definitions/ip"
-        }
-    },
-    "definitions": {
-        "ip": {
-            "type": "object",
-            "required": [
-                "ip",
-                "port",
-                "tg_url",
-                "tg_qrcode",
-                "tme_url",
-                "tme_qrcode"
-            ],
-            "additionalProperties": false,
-            "properties": {
-                "ip": {
-                    "type": "string",
-                    "minLength": 1,
-                    "anyOf": [
-                        {
-                            "format": "ipv4"
-                        },
-                        {
-                            "format": "ipv6"
-                        }
-                    ]
-                },
-                "port": {
-                    "type": "integer",
-                    "multipleOf": 1.0,
-                    "exclusiveMinimum": 0,
-                    "exclusiveMaximum": 65536
-                },
-                "tg_url": {
-                    "type": "string",
-                    "minLength": 1,
-                    "format": "uri"
-                },
-                "tg_qrcode": {
-                    "type": "string",
-                    "minLength": 1,
-                    "format": "uri"
-                },
-                "tme_url": {
-                    "type": "string",
-                    "minLength": 1,
-                    "format": "uri"
-                },
-                "tme_qrcode": {
-                    "type": "string",
-                    "minLength": 1,
-                    "format": "uri"
-                }
-            }
-        }
-    }
-}
-    `))
-	if err != nil {
-		panic(err)
-	}
-
-	return schema
-}()
-
-type AccessTestSuite struct {
-	CommonTestSuite
-}
-
-func (suite *AccessTestSuite) SetupTest() {
-	suite.CommonTestSuite.SetupTest()
-
-	suite.cli.Access.Config = &config.Config{}
-	suite.cli.Access.Config.Secret = mtglib.GenerateSecret("google.com")
-	suite.cli.Access.Network = suite.networkMock
-
-	suite.NoError(
-		suite.cli.Access.Config.BindTo.UnmarshalText([]byte("0.0.0.0:80")))
-}
-
-func (suite *AccessTestSuite) TestGenerateNoCalls() {
-	suite.cli.Access.PublicIPv4 = net.ParseIP("10.0.0.10")
-	suite.cli.Access.PublicIPv6 = net.ParseIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334")
-
-	output := testlib.CaptureStdout(func() {
-		suite.NoError(suite.cli.Access.Execute(suite.cli))
-	})
-
-	validated, err := accressResponseJSONSchema.Validate(
-		gojsonschema.NewStringLoader(output))
-	suite.NoError(err)
-	suite.Empty(validated.Errors())
-	suite.True(validated.Valid())
-
-	suite.Contains(output, "10.0.0.10")
-	suite.Contains(output, "2001:db8:85a3::8a2e:370:7334")
-	suite.Contains(output, "ipv4")
-	suite.Contains(output, "ipv6")
-	suite.Contains(output, suite.cli.Access.Config.Secret.Base64())
-	suite.Contains(output, suite.cli.Access.Config.Secret.Hex())
-}
-
-func (suite *AccessTestSuite) TestGenerateIPv4Call() {
-	suite.cli.Access.PublicIPv6 = net.ParseIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334")
-
-	httpmock.RegisterResponder(http.MethodGet, "https://ifconfig.co",
-		httpmock.NewStringResponder(http.StatusOK, "10.11.12.13"))
-
-	output := testlib.CaptureStdout(func() {
-		suite.NoError(suite.cli.Access.Execute(suite.cli))
-	})
-
-	validated, err := accressResponseJSONSchema.Validate(
-		gojsonschema.NewStringLoader(output))
-	suite.NoError(err)
-	suite.Empty(validated.Errors())
-	suite.True(validated.Valid())
-
-	suite.Contains(output, "10.11.12.13")
-	suite.Contains(output, "2001:db8:85a3::8a2e:370:7334")
-	suite.Contains(output, "ipv4")
-	suite.Contains(output, "ipv6")
-	suite.Contains(output, suite.cli.Access.Config.Secret.Base64())
-	suite.Contains(output, suite.cli.Access.Config.Secret.Hex())
-}
-
-func (suite *AccessTestSuite) TestIPv4CallFail() {
-	suite.cli.Access.PublicIPv6 = net.ParseIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334")
-
-	httpmock.RegisterResponder(http.MethodGet, "https://ifconfig.co",
-		httpmock.NewStringResponder(http.StatusForbidden, ""))
-
-	output := testlib.CaptureStdout(func() {
-		suite.NoError(suite.cli.Access.Execute(suite.cli))
-	})
-
-	validated, err := accressResponseJSONSchema.Validate(
-		gojsonschema.NewStringLoader(output))
-	suite.NoError(err)
-	suite.Empty(validated.Errors())
-	suite.True(validated.Valid())
-
-	suite.Contains(output, "2001:db8:85a3::8a2e:370:7334")
-	suite.NotContains(output, "ipv4")
-	suite.Contains(output, "ipv6")
-	suite.Contains(output, suite.cli.Access.Config.Secret.Base64())
-	suite.Contains(output, suite.cli.Access.Config.Secret.Hex())
-}
-
-func TestAccess(t *testing.T) { // nolint: paralleltest
-	suite.Run(t, &AccessTestSuite{})
-}

internal/cli/base.go

@@ -1,81 +0,0 @@
-package cli
-
-import (
-	"fmt"
-	"net"
-	"net/url"
-	"os"
-
-	"github.com/9seconds/mtg/v2/internal/config"
-	"github.com/9seconds/mtg/v2/mtglib"
-	"github.com/9seconds/mtg/v2/network"
-)
-
-type base struct {
-	ConfigPath string `kong:"arg,required,type='existingfile',help='Path to the configuration file.',name='config-path'"` // nolint: lll
-
-	Network mtglib.Network `kong:"-"`
-	Config  *config.Config `kong:"-"`
-}
-
-func (b *base) ReadConfig(version string) error {
-	content, err := os.ReadFile(b.ConfigPath)
-	if err != nil {
-		return fmt.Errorf("cannot read config file: %w", err)
-	}
-
-	conf, err := config.Parse(content)
-	if err != nil {
-		return fmt.Errorf("cannot parse config: %w", err)
-	}
-
-	ntw, err := b.makeNetwork(conf, version)
-	if err != nil {
-		return fmt.Errorf("cannot build a network: %w", err)
-	}
-
-	b.Config = conf
-	b.Network = ntw
-
-	return nil
-}
-
-func (b *base) makeNetwork(conf *config.Config, version string) (mtglib.Network, error) {
-	tcpTimeout := conf.Network.Timeout.TCP.Value(network.DefaultTimeout)
-	httpTimeout := conf.Network.Timeout.HTTP.Value(network.DefaultHTTPTimeout)
-	dohIP := conf.Network.DOHIP.Value(net.ParseIP(network.DefaultDOHHostname)).String()
-	bufferSize := conf.TCPBuffer.Value(network.DefaultBufferSize)
-	userAgent := "mtg/" + version
-
-	baseDialer, err := network.NewDefaultDialer(tcpTimeout, int(bufferSize))
-	if err != nil {
-		return nil, fmt.Errorf("cannot build a default dialer: %w", err)
-	}
-
-	proxyURLs := make([]*url.URL, 0, len(conf.Network.Proxies))
-
-	for _, v := range conf.Network.Proxies {
-		if value := v.Value(nil); value != nil {
-			proxyURLs = append(proxyURLs, v.Value(nil))
-		}
-	}
-
-	switch len(proxyURLs) {
-	case 0:
-		return network.NewNetwork(baseDialer, userAgent, dohIP, httpTimeout) // nolint: wrapcheck
-	case 1:
-		socksDialer, err := network.NewSocks5Dialer(baseDialer, proxyURLs[0])
-		if err != nil {
-			return nil, fmt.Errorf("cannot build socks5 dialer: %w", err)
-		}
-
-		return network.NewNetwork(socksDialer, userAgent, dohIP, httpTimeout) // nolint: wrapcheck
-	}
-
-	socksDialer, err := network.NewLoadBalancedSocks5Dialer(baseDialer, proxyURLs)
-	if err != nil {
-		return nil, fmt.Errorf("cannot build socks5 dialer: %w", err)
-	}
-
-	return network.NewNetwork(socksDialer, userAgent, dohIP, httpTimeout) // nolint: wrapcheck
-}

internal/cli/base_internal_test.go

@@ -1,33 +0,0 @@
-package cli
-
-import (
-	"path/filepath"
-	"testing"
-
-	"github.com/stretchr/testify/suite"
-)
-
-type BaseTestSuite struct {
-	suite.Suite
-
-	b base
-}
-
-func (suite *BaseTestSuite) SetupTest() {
-	suite.b = base{}
-}
-
-func (suite *BaseTestSuite) TestReadConfigNok() {
-	suite.b.ConfigPath = filepath.Join("testdata", "unknown")
-	suite.Error(suite.b.ReadConfig("dev"))
-}
-
-func (suite *BaseTestSuite) TestReadConfig() {
-	suite.b.ConfigPath = filepath.Join("testdata", "minimal.toml")
-	suite.NoError(suite.b.ReadConfig("dev"))
-}
-
-func TestBase(t *testing.T) {
-	t.Parallel()
-	suite.Run(t, &BaseTestSuite{})
-}

internal/cli/generate_secret_test.go

@@ -1,51 +0,0 @@
-package cli_test
-
-import (
-	"strings"
-	"testing"
-
-	"github.com/9seconds/mtg/v2/internal/testlib"
-	"github.com/9seconds/mtg/v2/mtglib"
-	"github.com/stretchr/testify/suite"
-)
-
-type GenerateSecretTestSuite struct {
-	CommonTestSuite
-}
-
-func (suite *GenerateSecretTestSuite) SetupTest() {
-	suite.CommonTestSuite.SetupTest()
-
-	suite.cli.GenerateSecret.HostName = "google.com"
-}
-
-func (suite *GenerateSecretTestSuite) TestDefault() {
-	output := testlib.CaptureStdout(func() {
-		suite.NoError(suite.cli.GenerateSecret.Run(suite.cli, "dev"))
-	})
-	suite.True(strings.HasPrefix(output, "7"))
-
-	secret, err := mtglib.ParseSecret(output)
-	suite.NoError(err)
-	suite.True(secret.Valid())
-	suite.Equal("google.com", secret.Host)
-}
-
-func (suite *GenerateSecretTestSuite) TestHex() {
-	suite.cli.GenerateSecret.Hex = true
-
-	output := testlib.CaptureStdout(func() {
-		suite.NoError(suite.cli.GenerateSecret.Run(suite.cli, "dev"))
-	})
-	suite.True(strings.HasPrefix(output, "ee"))
-
-	secret, err := mtglib.ParseSecret(output)
-	suite.NoError(err)
-	suite.True(secret.Valid())
-	suite.Equal("google.com", secret.Host)
-}
-
-func TestGenerateSecret(t *testing.T) {
-	t.Parallel()
-	suite.Run(t, &GenerateSecretTestSuite{})
-}

internal/cli/init_test.go

@@ -1,37 +0,0 @@
-package cli_test
-
-import (
-	"net/http"
-
-	"github.com/9seconds/mtg/v2/internal/cli"
-	"github.com/9seconds/mtg/v2/internal/testlib"
-	"github.com/jarcoal/httpmock"
-	"github.com/stretchr/testify/mock"
-	"github.com/stretchr/testify/suite"
-)
-
-type CommonTestSuite struct {
-	suite.Suite
-
-	cli         *cli.CLI
-	networkMock *testlib.MtglibNetworkMock
-	httpClient  *http.Client
-}
-
-func (suite *CommonTestSuite) SetupTest() {
-	suite.networkMock = &testlib.MtglibNetworkMock{}
-	suite.httpClient = &http.Client{}
-	suite.cli = &cli.CLI{}
-
-	httpmock.ActivateNonDefault(suite.httpClient)
-
-	suite.networkMock.
-		On("MakeHTTPClient", mock.Anything).
-		Maybe().
-		Return(suite.httpClient)
-}
-
-func (suite *CommonTestSuite) TearDownTest() {
-	suite.networkMock.AssertExpectations(suite.T())
-	httpmock.DeactivateAndReset()
-}

internal/cli/proxy.go

@@ -2,166 +2,19 @@ package cli
 
 import (
 	"fmt"
-	"net"
-	"os"
 
-	"github.com/9seconds/mtg/v2/antireplay"
-	"github.com/9seconds/mtg/v2/events"
 	"github.com/9seconds/mtg/v2/internal/utils"
-	"github.com/9seconds/mtg/v2/ipblocklist"
-	"github.com/9seconds/mtg/v2/logger"
-	"github.com/9seconds/mtg/v2/mtglib"
-	"github.com/9seconds/mtg/v2/stats"
-	"github.com/rs/zerolog"
 )
 
 type Proxy struct {
-	base
+	ConfigPath string `kong:"arg,required,type='existingfile',help='Path to the configuration file.',name='config-path'"` // nolint: lll
 }
 
 func (c *Proxy) Run(cli *CLI, version string) error {
-	if err := c.ReadConfig(version); err != nil {
-		return fmt.Errorf("cannot init config: %w", err)
-	}
-
-	return c.Execute()
-}
-
-func (c *Proxy) Execute() error {
-	zerolog.TimeFieldFormat = zerolog.TimeFormatUnixMs
-	zerolog.TimestampFieldName = "timestamp"
-	zerolog.LevelFieldName = "level"
-
-	if c.Config.Debug {
-		zerolog.SetGlobalLevel(zerolog.DebugLevel)
-	} else {
-		zerolog.SetGlobalLevel(zerolog.WarnLevel)
-	}
-
-	ctx := utils.RootContext()
-	opts := mtglib.ProxyOpts{
-		Logger:          logger.NewZeroLogger(zerolog.New(os.Stdout).With().Timestamp().Logger()),
-		Network:         c.Network,
-		AntiReplayCache: antireplay.NewNoop(),
-		IPBlocklist:     ipblocklist.NewNoop(),
-		EventStream:     events.NewNoopStream(),
-
-		Secret:             c.Config.Secret,
-		BufferSize:         c.Config.TCPBuffer.Value(mtglib.DefaultBufferSize),
-		DomainFrontingPort: c.Config.DomainFrontingPort.Value(mtglib.DefaultDomainFrontingPort),
-		IdleTimeout:        c.Config.Network.Timeout.Idle.Value(mtglib.DefaultIdleTimeout),
-		PreferIP:           c.Config.PreferIP.Value(mtglib.DefaultPreferIP),
-	}
-
-	opts.Logger.BindStr("configuration", c.Config.String()).Debug("configuration")
-
-	c.setupAntiReplayCache(&opts)
-
-	if err := c.setupIPBlocklist(&opts); err != nil {
-		return fmt.Errorf("cannot setup ipblocklist: %w", err)
-	}
-
-	if err := c.setupEventStream(&opts); err != nil {
-		return fmt.Errorf("cannot setup event stream: %w", err)
-	}
-
-	proxy, err := mtglib.NewProxy(opts)
-	if err != nil {
-		return fmt.Errorf("cannot create a proxy: %w", err)
-	}
-
-	listener, err := net.Listen("tcp", c.Config.BindTo.String())
-	if err != nil {
-		return fmt.Errorf("cannot start proxy: %w", err)
-	}
-
-	go proxy.Serve(listener) // nolint: errcheck
-
-	<-ctx.Done()
-	listener.Close()
-	proxy.Shutdown()
-
-	return nil
-}
-
-func (c *Proxy) setupAntiReplayCache(opts *mtglib.ProxyOpts) {
-	if !c.Config.Defense.AntiReplay.Enabled {
-		return
-	}
-
-	opts.AntiReplayCache = antireplay.NewStableBloomFilter(
-		c.Config.Defense.AntiReplay.MaxSize.Value(antireplay.DefaultStableBloomFilterMaxSize),
-		c.Config.Defense.AntiReplay.ErrorRate.Value(antireplay.DefaultStableBloomFilterErrorRate),
-	)
-}
-
-func (c *Proxy) setupIPBlocklist(opts *mtglib.ProxyOpts) error {
-	if !c.Config.Defense.Blocklist.Enabled {
-		return nil
-	}
-
-	remoteURLs := []string{}
-	localFiles := []string{}
-
-	for _, v := range c.Config.Defense.Blocklist.URLs {
-		if v.IsRemote() {
-			remoteURLs = append(remoteURLs, v.String())
-		} else {
-			localFiles = append(localFiles, v.String())
-		}
-	}
-
-	firehol, err := ipblocklist.NewFirehol(opts.Logger.Named("ipblockist"),
-		c.Network,
-		c.Config.Defense.Blocklist.DownloadConcurrency,
-		remoteURLs,
-		localFiles)
+	conf, err := utils.ReadConfig(c.ConfigPath)
 	if err != nil {
-		return err // nolint: wrapcheck
-	}
-
-	go firehol.Run(c.Config.Defense.Blocklist.UpdateEach.Value(ipblocklist.DefaultFireholUpdateEach))
-
-	opts.IPBlocklist = firehol
-
-	return nil
-}
-
-func (c *Proxy) setupEventStream(opts *mtglib.ProxyOpts) error {
-	factories := make([]events.ObserverFactory, 0, 2)
-
-	if c.Config.Stats.StatsD.Enabled {
-		statsdFactory, err := stats.NewStatsd(
-			c.Config.Stats.StatsD.Address.String(),
-			opts.Logger.Named("statsd"),
-			c.Config.Stats.StatsD.MetricPrefix.Value(stats.DefaultStatsdMetricPrefix),
-			c.Config.Stats.StatsD.TagFormat.Value(stats.DefaultStatsdTagFormat))
-		if err != nil {
-			return fmt.Errorf("cannot build statsd observer: %w", err)
-		}
-
-		factories = append(factories, statsdFactory.Make)
-	}
-
-	if c.Config.Stats.Prometheus.Enabled {
-		prometheus := stats.NewPrometheus(
-			c.Config.Stats.Prometheus.MetricPrefix.Value(stats.DefaultMetricPrefix),
-			c.Config.Stats.Prometheus.HTTPPath.Value("/"),
-		)
-
-		listener, err := net.Listen("tcp", c.Config.Stats.Prometheus.BindTo.String())
-		if err != nil {
-			return fmt.Errorf("cannot start a listener for prometheus: %w", err)
-		}
-
-		go prometheus.Serve(listener) // nolint: errcheck
-
-		factories = append(factories, prometheus.Make)
-	}
-
-	if len(factories) > 0 {
-		opts.EventStream = events.NewEventStream(factories)
+		return fmt.Errorf("cannot init config: %w", err)
 	}
 
-	return nil
+    return runProxy(conf, version)
 }

internal/cli/run_proxy.go

@@ -0,0 +1,208 @@
+package cli
+
+import (
+	"fmt"
+	"net"
+	"net/url"
+	"os"
+
+	"github.com/9seconds/mtg/v2/antireplay"
+	"github.com/9seconds/mtg/v2/events"
+	"github.com/9seconds/mtg/v2/internal/config"
+	"github.com/9seconds/mtg/v2/internal/utils"
+	"github.com/9seconds/mtg/v2/ipblocklist"
+	"github.com/9seconds/mtg/v2/logger"
+	"github.com/9seconds/mtg/v2/mtglib"
+	"github.com/9seconds/mtg/v2/network"
+	"github.com/9seconds/mtg/v2/stats"
+	"github.com/rs/zerolog"
+)
+
+func makeLogger(conf *config.Config) mtglib.Logger {
+	zerolog.TimeFieldFormat = zerolog.TimeFormatUnixMs
+	zerolog.TimestampFieldName = "timestamp"
+	zerolog.LevelFieldName = "level"
+
+	if conf.Debug.Get(false) {
+		zerolog.SetGlobalLevel(zerolog.DebugLevel)
+	} else {
+		zerolog.SetGlobalLevel(zerolog.WarnLevel)
+	}
+
+	baseLogger := zerolog.New(os.Stdout).With().Timestamp().Logger()
+
+	return logger.NewZeroLogger(baseLogger)
+}
+
+func makeNetwork(conf *config.Config, version string) (mtglib.Network, error) {
+	tcpTimeout := conf.Network.Timeout.TCP.Get(network.DefaultTimeout)
+	httpTimeout := conf.Network.Timeout.HTTP.Get(network.DefaultHTTPTimeout)
+	dohIP := conf.Network.DOHIP.Get(net.ParseIP(network.DefaultDOHHostname)).String()
+	bufferSize := conf.TCPBuffer.Get(network.DefaultBufferSize)
+	userAgent := "mtg/" + version
+
+	baseDialer, err := network.NewDefaultDialer(tcpTimeout, int(bufferSize))
+	if err != nil {
+		return nil, fmt.Errorf("cannot build a default dialer: %w", err)
+	}
+
+	if len(conf.Network.Proxies) == 0 {
+		return network.NewNetwork(baseDialer, userAgent, dohIP, httpTimeout) // nolint: wrapcheck
+	}
+
+	proxyURLs := make([]*url.URL, 0, len(conf.Network.Proxies))
+	for _, v := range conf.Network.Proxies {
+		if value := v.Get(nil); value != nil {
+			proxyURLs = append(proxyURLs, value)
+		}
+	}
+
+	if len(proxyURLs) == 1 {
+		socksDialer, err := network.NewSocks5Dialer(baseDialer, proxyURLs[0])
+		if err != nil {
+			return nil, fmt.Errorf("cannot build socks5 dialer: %w", err)
+		}
+
+		return network.NewNetwork(socksDialer, userAgent, dohIP, httpTimeout) // nolint: wrapcheck
+	}
+
+	socksDialer, err := network.NewLoadBalancedSocks5Dialer(baseDialer, proxyURLs)
+	if err != nil {
+		return nil, fmt.Errorf("cannot build socks5 dialer: %w", err)
+	}
+
+	return network.NewNetwork(socksDialer, userAgent, dohIP, httpTimeout) // nolint: wrapcheck
+}
+
+func makeAntiReplayCache(conf *config.Config) mtglib.AntiReplayCache {
+	if !conf.Defense.AntiReplay.Enabled.Get(false) {
+		return antireplay.NewNoop()
+	}
+
+	return antireplay.NewStableBloomFilter(
+		conf.Defense.AntiReplay.MaxSize.Get(antireplay.DefaultStableBloomFilterMaxSize),
+		conf.Defense.AntiReplay.ErrorRate.Get(antireplay.DefaultStableBloomFilterErrorRate),
+	)
+}
+
+func makeIPBlocklist(conf *config.Config, logger mtglib.Logger, ntw mtglib.Network) (mtglib.IPBlocklist, error) {
+	if !conf.Defense.Blocklist.Enabled.Get(false) {
+		return ipblocklist.NewNoop(), nil
+	}
+
+	remoteURLs := []string{}
+	localFiles := []string{}
+
+	for _, v := range conf.Defense.Blocklist.URLs {
+		if v.IsRemote() {
+			remoteURLs = append(remoteURLs, v.String())
+		} else {
+			localFiles = append(localFiles, v.String())
+		}
+	}
+
+	firehol, err := ipblocklist.NewFirehol(logger.Named("ipblockist"),
+		ntw,
+		conf.Defense.Blocklist.DownloadConcurrency.Get(1),
+		remoteURLs,
+		localFiles)
+	if err != nil {
+		return nil, fmt.Errorf("incorrect parameters for firehol: %w", err)
+	}
+
+	return firehol, nil
+}
+
+func makeEventStream(conf *config.Config, logger mtglib.Logger) (mtglib.EventStream, error) {
+	factories := make([]events.ObserverFactory, 0, 2)
+
+	if conf.Stats.StatsD.Enabled.Get(false) {
+		statsdFactory, err := stats.NewStatsd(
+			conf.Stats.StatsD.Address.Get(""),
+			logger.Named("statsd"),
+			conf.Stats.StatsD.MetricPrefix.Get(stats.DefaultStatsdMetricPrefix),
+			conf.Stats.StatsD.TagFormat.Get(stats.DefaultStatsdTagFormat))
+		if err != nil {
+			return nil, fmt.Errorf("cannot build statsd observer: %w", err)
+		}
+
+		factories = append(factories, statsdFactory.Make)
+	}
+
+	if conf.Stats.Prometheus.Enabled.Get(false) {
+		prometheus := stats.NewPrometheus(
+			conf.Stats.Prometheus.MetricPrefix.Get(stats.DefaultMetricPrefix),
+			conf.Stats.Prometheus.HTTPPath.Get("/"),
+		)
+
+		listener, err := net.Listen("tcp", conf.Stats.Prometheus.BindTo.Get(""))
+		if err != nil {
+			return nil, fmt.Errorf("cannot start a listener for prometheus: %w", err)
+		}
+
+		go prometheus.Serve(listener) // nolint: errcheck
+
+		factories = append(factories, prometheus.Make)
+	}
+
+	if len(factories) > 0 {
+		return events.NewEventStream(factories), nil
+	}
+
+	return events.NewNoopStream(), nil
+}
+
+func runProxy(conf *config.Config, version string) error {
+	logger := makeLogger(conf)
+
+	logger.BindStr("configuration", conf.String()).Debug("configuration")
+
+	ntw, err := makeNetwork(conf, version)
+	if err != nil {
+		return fmt.Errorf("cannot build network: %w", err)
+	}
+
+	blocklist, err := makeIPBlocklist(conf, logger, ntw)
+	if err != nil {
+		return fmt.Errorf("cannot build ip blocklist: %w", err)
+	}
+
+	eventStream, err := makeEventStream(conf, logger)
+	if err != nil {
+		return fmt.Errorf("cannot build event stream: %w", err)
+	}
+
+	opts := mtglib.ProxyOpts{
+		Logger:          logger,
+		Network:         ntw,
+		AntiReplayCache: makeAntiReplayCache(conf),
+		IPBlocklist:     blocklist,
+		EventStream:     eventStream,
+
+		Secret:             conf.Secret,
+		BufferSize:         conf.TCPBuffer.Get(mtglib.DefaultBufferSize),
+		DomainFrontingPort: conf.DomainFrontingPort.Get(mtglib.DefaultDomainFrontingPort),
+		IdleTimeout:        conf.Network.Timeout.Idle.Get(mtglib.DefaultIdleTimeout),
+		PreferIP:           conf.PreferIP.Get(mtglib.DefaultPreferIP),
+	}
+
+	proxy, err := mtglib.NewProxy(opts)
+	if err != nil {
+		return fmt.Errorf("cannot create a proxy: %w", err)
+	}
+
+	listener, err := net.Listen("tcp", conf.BindTo.Get(""))
+	if err != nil {
+		return fmt.Errorf("cannot start proxy: %w", err)
+	}
+
+	ctx := utils.RootContext()
+
+	go proxy.Serve(listener) // nolint: errcheck
+
+	<-ctx.Done()
+	listener.Close()
+	proxy.Shutdown()
+
+	return nil
+}

internal/cli/utils.go

@@ -1,66 +0,0 @@
-package cli
-
-import (
-	"fmt"
-	"net"
-	"net/url"
-	"os"
-
-	"github.com/9seconds/mtg/v2/internal/config2"
-	"github.com/9seconds/mtg/v2/mtglib"
-	"github.com/9seconds/mtg/v2/network"
-)
-
-func readTOMLConfig(path string) (*config2.Config, error) {
-	content, err := os.ReadFile(path)
-	if err != nil {
-		return nil, fmt.Errorf("cannot read config file: %w", err)
-	}
-
-	conf, err := config2.Parse(content)
-	if err != nil {
-		return nil, fmt.Errorf("cannot parse config: %w", err)
-	}
-
-	return conf, nil
-}
-
-func makeNetwork(conf *config2.Config, version string) (mtglib.Network, error) {
-	tcpTimeout := conf.Network.Timeout.TCP.Get(network.DefaultTimeout)
-	httpTimeout := conf.Network.Timeout.HTTP.Get(network.DefaultHTTPTimeout)
-	dohIP := conf.Network.DOHIP.Get(net.ParseIP(network.DefaultDOHHostname)).String()
-	bufferSize := conf.TCPBuffer.Get(network.DefaultBufferSize)
-	userAgent := "mtg/" + version
-
-	baseDialer, err := network.NewDefaultDialer(tcpTimeout, int(bufferSize))
-	if err != nil {
-		return nil, fmt.Errorf("cannot build a default dialer: %w", err)
-	}
-
-	if len(conf.Network.Proxies) == 0 {
-		return network.NewNetwork(baseDialer, userAgent, dohIP, httpTimeout) // nolint: wrapcheck
-	}
-
-	proxyURLs := make([]*url.URL, 0, len(conf.Network.Proxies))
-	for _, v := range conf.Network.Proxies {
-		if value := v.Get(nil); value != nil {
-			proxyURLs = append(proxyURLs, value)
-		}
-	}
-
-	if len(proxyURLs) == 1 {
-		socksDialer, err := network.NewSocks5Dialer(baseDialer, proxyURLs[0])
-		if err != nil {
-			return nil, fmt.Errorf("cannot build socks5 dialer: %w", err)
-		}
-
-		return network.NewNetwork(socksDialer, userAgent, dohIP, httpTimeout) // nolint: wrapcheck
-	}
-
-	socksDialer, err := network.NewLoadBalancedSocks5Dialer(baseDialer, proxyURLs)
-	if err != nil {
-		return nil, fmt.Errorf("cannot build socks5 dialer: %w", err)
-	}
-
-	return network.NewNetwork(socksDialer, userAgent, dohIP, httpTimeout) // nolint: wrapcheck
-}

internal/config/type_bool.go

@@ -3,7 +3,6 @@ package config
 import (
 	"fmt"
 	"strconv"
-	"strings"
 )
 
 type TypeBool struct {
@@ -11,15 +10,13 @@ type TypeBool struct {
 }
 
 func (t *TypeBool) Set(data string) error {
-	switch strings.ToLower(data) {
-	case "1", "y", "yes", "enabled", "true":
-		t.Value = true
-	case "0", "n", "no", "disabled", "false":
-		t.Value = false
-	default:
-		return fmt.Errorf("incorrect bool value %s", data)
+	parsed, err := strconv.ParseBool(data)
+	if err != nil {
+		return fmt.Errorf("incorrect bool value: %s", data)
 	}
 
+	t.Value = parsed
+
 	return nil
 }
 
@@ -27,11 +24,11 @@ func (t TypeBool) Get(defaultValue bool) bool {
 	return t.Value || defaultValue
 }
 
-func (t *TypeBool) UnmarshalText(data []byte) error {
+func (t *TypeBool) UnmarshalJSON(data []byte) error {
 	return t.Set(string(data))
 }
 
-func (t TypeBool) MarshalText() ([]byte, error) {
+func (t TypeBool) MarshalJSON() ([]byte, error) {
 	return []byte(t.String()), nil
 }
 

internal/config/type_bool_test.go

@@ -20,53 +20,41 @@ type TypeBoolTestSuite struct {
 }
 
 func (suite *TypeBoolTestSuite) TestUnmarshalFail() {
-	testData := []string{
+	testData := []interface{}{
 		"",
 		"np",
 		"нет",
+		int(10),
+		[]int{},
 	}
 
 	for _, v := range testData {
-		data, err := json.Marshal(map[string]string{
+		data, err := json.Marshal(map[string]interface{}{
 			"value": v,
 		})
 		suite.NoError(err)
 
-		suite.T().Run(v, func(t *testing.T) {
+		suite.T().Run(fmt.Sprintf("%v", v), func(t *testing.T) {
 			assert.Error(t, json.Unmarshal(data, &typeBoolTestStruct{}))
 		})
 	}
 }
 
 func (suite *TypeBoolTestSuite) TestUnmarshalOk() {
-	testData := map[string]bool{
-		"0":        false,
-		"N":        false,
-		"nO":       false,
-		"no":       false,
-		"dISAbLEd": false,
-		"False":    false,
-		"false":    false,
-
-		"1":       true,
-		"y":       true,
-		"Yes":     true,
-		"yes":     true,
-		"enABLED": true,
-		"True":    true,
-		"TRUE":    true,
-		"true":    true,
+	testData := []bool{
+		true,
+		false,
 	}
 
-	for k, v := range testData {
+	for _, v := range testData {
 		value := v
 
-		data, err := json.Marshal(map[string]string{
-			"value": k,
+		data, err := json.Marshal(map[string]bool{
+			"value": v,
 		})
 		suite.NoError(err)
 
-		suite.T().Run(k, func(t *testing.T) {
+		suite.T().Run(strconv.FormatBool(v), func(t *testing.T) {
 			testStruct := &typeBoolTestStruct{}
 			assert.NoError(t, json.Unmarshal(data, testStruct))
 
@@ -81,18 +69,24 @@ func (suite *TypeBoolTestSuite) TestUnmarshalOk() {
 
 func (suite *TypeBoolTestSuite) TestMarshalOk() {
 	for _, v := range []bool{true, false} {
-		name := strconv.FormatBool(v)
+		value := v
 
-		suite.T().Run(name, func(t *testing.T) {
+		suite.T().Run(strconv.FormatBool(v), func(t *testing.T) {
 			testStruct := typeBoolTestStruct{
 				Value: config.TypeBool{
-					Value: v,
+					Value: value,
 				},
 			}
 
-			data, err := json.Marshal(testStruct)
+			encodedJSON, err := json.Marshal(testStruct)
 			assert.NoError(t, err)
-			assert.JSONEq(t, fmt.Sprintf(`{"value": "%s"}`, name), string(data))
+
+			expectedJSON, err := json.Marshal(map[string]bool{
+				"value": value,
+			})
+			assert.NoError(t, err)
+
+			assert.JSONEq(t, string(expectedJSON), string(encodedJSON))
 		})
 	}
 }

internal/config/type_error_rate.go

@@ -34,11 +34,11 @@ func (t TypeErrorRate) Get(defaultValue float64) float64 {
 	return t.Value
 }
 
-func (t *TypeErrorRate) UnmarshalText(data []byte) error {
+func (t *TypeErrorRate) UnmarshalJSON(data []byte) error {
 	return t.Set(string(data))
 }
 
-func (t TypeErrorRate) MarshalText() ([]byte, error) {
+func (t TypeErrorRate) MarshalJSON() ([]byte, error) {
 	return []byte(t.String()), nil
 }
 

internal/config/type_error_rate_test.go

@@ -45,27 +45,14 @@ func (suite *TypeErrorRateTestSuite) TestUnmarshalFail() {
 }
 
 func (suite *TypeErrorRateTestSuite) TestUnmarshalOk() {
-	testData := map[string]float64{
-		"1":   1.0,
-		"1.0": 1.0,
-		"0.5": 0.5,
-		".5":  0.5,
-	}
-
-	for k, v := range testData {
-		value := v
-
-		data, err := json.Marshal(map[string]string{
-			"value": k,
-		})
-		suite.NoError(err)
+	data, err := json.Marshal(map[string]float64{
+		"value": 1.0,
+	})
+	suite.NoError(err)
 
-		suite.T().Run(k, func(t *testing.T) {
-			testStruct := &typeErrorRateTestStruct{}
-			assert.NoError(t, json.Unmarshal(data, testStruct))
-			assert.InEpsilon(t, value, testStruct.Value.Value, 1e-10)
-		})
-	}
+	testStruct := &typeErrorRateTestStruct{}
+	suite.NoError(json.Unmarshal(data, testStruct))
+	suite.InEpsilon(1.0, testStruct.Value.Value, 1e-10)
 }
 
 func (suite *TypeErrorRateTestSuite) TestMarshalOk() {
@@ -77,7 +64,7 @@ func (suite *TypeErrorRateTestSuite) TestMarshalOk() {
 
 	encodedJson, err := json.Marshal(testStruct)
 	suite.NoError(err)
-	suite.JSONEq(`{"value": "1.01"}`, string(encodedJson))
+	suite.JSONEq(`{"value": 1.01}`, string(encodedJson))
 }
 
 func (suite *TypeErrorRateTestSuite) TestGet() {

internal/config/type_hostport.go

@@ -8,6 +8,8 @@ import (
 
 type TypeHostPort struct {
 	Value string
+	Host  string
+	Port  uint
 }
 
 func (t *TypeHostPort) Set(value string) error {
@@ -34,6 +36,8 @@ func (t *TypeHostPort) Set(value string) error {
 	}
 
 	t.Value = net.JoinHostPort(host, port)
+	t.Port = uint(portValue)
+	t.Host = host
 
 	return nil
 }

internal/utils/make_qr_code_url.go

@@ -0,0 +1,19 @@
+package utils
+
+import "net/url"
+
+func MakeQRCodeURL(data string) string {
+	values := url.Values{}
+	values.Set("qzone", "4")
+	values.Set("format", "svg")
+	values.Set("data", data)
+
+	rv := url.URL{
+		Scheme:   "https",
+		Host:     "api.qrserver.com",
+		Path:     "v1/create-qr-code",
+		RawQuery: values.Encode(),
+	}
+
+	return rv.String()
+}

internal/utils/read_config.go

@@ -0,0 +1,26 @@
+package utils
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/9seconds/mtg/v2/internal/config"
+)
+
+func ReadConfig(path string) (*config.Config, error) {
+	content, err := os.ReadFile(path)
+	if err != nil {
+		return nil, fmt.Errorf("cannot read config file: %w", err)
+	}
+
+	conf, err := config.Parse(content)
+	if err != nil {
+		return nil, fmt.Errorf("cannot parse config: %w", err)
+	}
+
+	if err := conf.Validate(); err != nil {
+		return nil, fmt.Errorf("invalid config: %w", err)
+	}
+
+	return conf, nil
+}

mtglib/proxy_opts.go

@@ -62,7 +62,7 @@ type ProxyOpts struct {
 	// specifies a hostname only.
 	//
 	// This is an optional setting.
-	DomainFrontingPort uint
+	DomainFrontingPort uint16
 
 	// IdleTimeout is a timeout for relay when we have to break a
 	// stream.