fix(irc): improve IRC handler management (#1269)

* fix some races in IRC handler management

* remove go 1.21 and slices package

* chore: update deps

* fix: use exp/slices pkg and client callbacks

* fix(irc): remove deadlock mutex from authenticate

* restore locking in authenticate()

* fix(irc): data races

* fix(irc): do not allow restart of disabled network

* fix(irc): disable restart btn if net disabled

---------

Co-authored-by: ze0s <43699394+zze0s@users.noreply.github.com>

go.mod

@@ -39,6 +39,7 @@ require (
 	github.com/stretchr/testify v1.8.4
 	go.uber.org/automaxprocs v1.5.3
 	golang.org/x/crypto v0.16.0
+	golang.org/x/exp v0.0.0-20231127185646-65229373498e
 	golang.org/x/net v0.19.0
 	golang.org/x/sync v0.5.0
 	golang.org/x/term v0.15.0
@@ -94,11 +95,10 @@ require (
 	github.com/subosito/gotenv v1.6.0 // indirect
 	go.uber.org/atomic v1.9.0 // indirect
 	go.uber.org/multierr v1.9.0 // indirect
-	golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect
+	golang.org/x/mod v0.14.0 // indirect
-	golang.org/x/mod v0.12.0 // indirect
 	golang.org/x/sys v0.15.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
-	golang.org/x/tools v0.13.0 // indirect
+	golang.org/x/tools v0.16.0 // indirect
 	gopkg.in/cenkalti/backoff.v1 v1.1.0 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	lukechampine.com/uint128 v1.3.0 // indirect

go.sum

@@ -475,6 +475,8 @@ golang.org/x/exp v0.0.0-20200207192155-f17229e696bd/go.mod h1:J/WKrq2StrnmMY6+EH
 golang.org/x/exp v0.0.0-20200224162631-6cc2880d07d6/go.mod h1:3jZMyOhIsHpP37uCMkUooju7aAi5cS1Q23tOzKc+0MU=
 golang.org/x/exp v0.0.0-20230905200255-921286631fa9 h1:GoHiUyI/Tp2nVkLI2mCxVkOjsbSXD66ic0XW0js0R9g=
 golang.org/x/exp v0.0.0-20230905200255-921286631fa9/go.mod h1:S2oDrQGGwySpoQPVqRShND87VCbxmc6bL1Yd2oYrm6k=
+golang.org/x/exp v0.0.0-20231127185646-65229373498e h1:Gvh4YaCaXNs6dKTlfgismwWZKyjVZXwOPfIyUaqU3No=
+golang.org/x/exp v0.0.0-20231127185646-65229373498e/go.mod h1:iRJReGqOEeBhDZGkGbynYwcHlctCvnjTYIamk7uXpHI=
 golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
 golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
@@ -502,6 +504,8 @@ golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91
 golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.12.0 h1:rmsUpXtvNzj340zd98LZ4KntptpfRHwpFOHG188oHXc=
 golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/mod v0.14.0 h1:dGoOF9QVLYng8IHTm7BAyWqCqSheQ5pYWGhzW00YJr0=
+golang.org/x/mod v0.14.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -698,6 +702,8 @@ golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc
 golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
 golang.org/x/tools v0.13.0 h1:Iey4qkscZuv0VvIt8E0neZjtPVQFSc870HQ448QgEmQ=
 golang.org/x/tools v0.13.0/go.mod h1:HvlwmtVNQAhOuCjW7xxvovg8wbNq7LwfXh/k7wXUl58=
+golang.org/x/tools v0.16.0 h1:GO788SKMRunPIBCXiQyo2AaexLstOrVhuAL5YwsckQM=
+golang.org/x/tools v0.16.0/go.mod h1:kYVVN6I1mBNoB1OX+noeBjbRk4IUEPa7JJ+TJMEooJ0=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

internal/irc/handler.go

@@ -23,9 +23,14 @@ import (
 	"github.com/r3labs/sse/v2"
 	"github.com/rs/zerolog"
 	"github.com/sasha-s/go-deadlock"
+	"golang.org/x/exp/slices"
 )
 
 var (
+	connectionInProgress = errors.New("A connection attempt is already in progress")
+
+	clientDisconnected = errors.New("Message cannot be sent because client is disconnected")
+
 	clientManuallyDisconnected = retry.Unrecoverable(errors.New("IRC client was manually disconnected"))
 )
 
@@ -62,6 +67,14 @@ func (ch *channelHealth) resetMonitoring() {
 	ch.m.Unlock()
 }
 
+type ircState uint
+
+const (
+	ircStopped    ircState = iota // (Handler).client is nil
+	ircConnecting                 // still nil
+	ircLive                       // (Handler.client) is non-nil and valid
+)
+
 type Handler struct {
 	log                 zerolog.Logger
 	sse                 *sse.Server
@@ -71,12 +84,12 @@ type Handler struct {
 	announceProcessors  map[string]announce.Processor
 	definitions         map[string]*domain.IndexerDefinition
 
-	client *ircevent.Connection
+	client      *ircevent.Connection
-	m      deadlock.RWMutex
+	clientState ircState
+	m           deadlock.RWMutex
 
-	connectedSince       time.Time
+	connectedSince   time.Time
-	haveDisconnected     bool
+	haveDisconnected bool
-	manuallyDisconnected bool
 
 	validAnnouncers map[string]struct{}
 	validChannels   map[string]struct{}
@@ -155,7 +168,7 @@ func (h *Handler) removeIndexer() {
 	// TODO remove announceProcessor
 }
 
-func (h *Handler) Run() error {
+func (h *Handler) Run() (err error) {
 	// TODO validate
 	// check if network requires nickserv
 	// check if network or channels requires invite command
@@ -168,9 +181,31 @@ func (h *Handler) Run() error {
 
 	// this used to be TraceLevel but was changed to DebugLevel during connect to see the info without needing to change loglevel
 	// we change back to TraceLevel in the handleJoined method.
-	subLogger := zstdlog.NewStdLoggerWithLevel(h.log.With().Logger(), zerolog.DebugLevel)
+	subLogger := zstdlog.NewStdLoggerWithLevel(h.log.With().Logger(), zerolog.TraceLevel)
 
-	h.client = &ircevent.Connection{
+	shouldConnect := false
+	h.m.Lock()
+	if h.clientState == ircStopped {
+		shouldConnect = true
+		h.clientState = ircConnecting
+	}
+	h.m.Unlock()
+
+	if !shouldConnect {
+		return connectionInProgress
+	}
+
+	// either we will successfully transition to `ircLive`, or else
+	// we need to reset the state to `ircStopped`
+	defer func() {
+		h.m.Lock()
+		if h.clientState == ircConnecting {
+			h.clientState = ircStopped
+		}
+		h.m.Unlock()
+	}()
+
+	client := &ircevent.Connection{
 		Nick:          h.network.Nick,
 		User:          h.network.Auth.Account,
 		RealName:      h.network.Auth.Account,
@@ -187,36 +222,38 @@ func (h *Handler) Run() error {
 
 	if h.network.Auth.Mechanism == domain.IRCAuthMechanismSASLPlain {
 		if h.network.Auth.Account != "" && h.network.Auth.Password != "" {
-			h.client.SASLLogin = h.network.Auth.Account
+			client.SASLLogin = h.network.Auth.Account
-			h.client.SASLPassword = h.network.Auth.Password
+			client.SASLPassword = h.network.Auth.Password
-			h.client.SASLOptional = true
+			client.SASLOptional = true
-			h.client.UseSASL = true
+			client.UseSASL = true
 		}
 	}
 
 	if h.network.TLS {
-		h.client.UseTLS = true
+		client.UseTLS = true
-		h.client.TLSConfig = &tls.Config{InsecureSkipVerify: true}
+		client.TLSConfig = &tls.Config{InsecureSkipVerify: true}
 	}
 
-	h.client.AddConnectCallback(h.onConnect)
+	client.AddConnectCallback(h.onConnect)
-	h.client.AddDisconnectCallback(h.onDisconnect)
+	client.AddDisconnectCallback(h.onDisconnect)
 
-	h.client.AddCallback("MODE", h.handleMode)
+	client.AddCallback("MODE", h.handleMode)
 	if h.network.BotMode {
-		h.client.AddCallback("501", h.handleModeUnknownFlag)
+		client.AddCallback("501", h.handleModeUnknownFlag)
 	}
-	h.client.AddCallback("INVITE", h.handleInvite)
+	client.AddCallback("INVITE", h.handleInvite)
-	h.client.AddCallback("366", h.handleJoined)
+	client.AddCallback("366", h.handleJoined)
-	h.client.AddCallback("PART", h.handlePart)
+	client.AddCallback("PART", h.handlePart)
-	h.client.AddCallback("PRIVMSG", h.onMessage)
+	client.AddCallback("PRIVMSG", h.onMessage)
-	h.client.AddCallback("NOTICE", h.onNotice)
+	client.AddCallback("NOTICE", h.onNotice)
-	h.client.AddCallback("NICK", h.onNick)
+	client.AddCallback("NICK", h.onNick)
-	h.client.AddCallback("903", h.handleSASLSuccess)
+	client.AddCallback("903", h.handleSASLSuccess)
 
 	//h.setConnectionStatus()
 	h.saslauthed = false
 
+	h.client = client
+
 	if err := func() error {
 		// count connect attempts
 		connectAttempts := 0
@@ -230,14 +267,14 @@ func (h *Handler) Run() error {
 
 				// #1239: don't retry if the user manually disconnected with Stop()
 				h.m.RLock()
-				manuallyDisconnected := h.manuallyDisconnected
+				manuallyDisconnected := h.clientState == ircStopped
 				h.m.RUnlock()
 
 				if manuallyDisconnected {
 					return clientManuallyDisconnected
 				}
 
-				if err := h.client.Connect(); err != nil {
+				if err := client.Connect(); err != nil {
 					h.log.Error().Err(err).Msg("client encountered connection error")
 					connectAttempts++
 					return err
@@ -265,7 +302,29 @@ func (h *Handler) Run() error {
 		return err
 	}
 
-	h.client.Loop()
+	shouldDisconnect := false
+	h.m.Lock()
+	switch h.clientState {
+	case ircStopped:
+		// concurrent Stop(), bail
+		shouldDisconnect = true
+	case ircConnecting:
+		// success!
+		//h.client = client
+		h.clientState = ircLive
+	case ircLive:
+		// impossible
+		h.log.Error().Stack().Msgf("two concurrent connection attempts detected")
+		shouldDisconnect = true
+	}
+	h.m.Unlock()
+
+	if shouldDisconnect {
+		client.Quit()
+		return clientManuallyDisconnected
+	}
+
+	go client.Loop()
 
 	return nil
 }
@@ -277,29 +336,15 @@ func (h *Handler) isOurNick(nick string) bool {
 }
 
 func (h *Handler) isOurCurrentNick(nick string) bool {
-	h.m.RLock()
+	return h.CurrentNick() == nick
-	defer h.m.RUnlock()
-	return h.client.CurrentNick() == nick
 }
 
 func (h *Handler) setConnectionStatus() {
 	h.m.Lock()
-	if h.client.Connected() {
+	if h.client != nil && h.client.Connected() {
 		h.connectedSince = time.Now()
 	}
 	h.m.Unlock()
-	//else {
-	//	h.connectedSince = time.Time{}
-	//	//h.channelHealth = map[string]*channelHealth{}
-	//	h.resetChannelHealth()
-	//}
-}
-
-func (h *Handler) resetConnectionStatus() {
-	h.m.Lock()
-	h.connectedSince = time.Time{}
-	h.resetChannelHealth()
-	h.m.Unlock()
 }
 
 func (h *Handler) GetNetwork() *domain.IrcNetwork {
@@ -331,32 +376,38 @@ func (h *Handler) AddChannelHealth(channel string) {
 }
 
 func (h *Handler) resetChannelHealth() {
+	h.m.RLock()
 	for _, ch := range h.channelHealth {
 		ch.resetMonitoring()
 	}
+	h.m.RUnlock()
 }
 
 // Stop the network and quit
 func (h *Handler) Stop() {
 	h.m.Lock()
 	h.connectedSince = time.Time{}
-	h.manuallyDisconnected = true
+	client := h.client
-
+	h.clientState = ircStopped
-	if h.client.Connected() {
+	h.client = nil
-		h.log.Debug().Msg("Disconnecting...")
-	}
 	h.m.Unlock()
 
-	h.resetChannelHealth()
+	if client != nil {
+		h.log.Debug().Msg("Disconnecting...")
+		h.resetChannelHealth()
+		client.Quit()
+	}
+}
 
-	h.client.Quit()
+func (h *Handler) Stopped() bool {
+	h.m.RLock()
+	defer h.m.RUnlock()
+	return h.clientState == ircStopped
 }
 
 // Restart stops the network and then runs it
 func (h *Handler) Restart() error {
-	h.log.Debug().Msg("Restarting network...")
 	h.Stop()
-
 	return h.Run()
 }
 
@@ -372,7 +423,9 @@ func (h *Handler) onConnect(m ircmsg.Message) {
 
 	func() {
 		h.m.Lock()
-		if h.haveDisconnected {
+		if h.haveDisconnected && h.clientState == ircLive {
+			h.log.Info().Msgf("network re-connected after unexpected disconnect: %s", h.network.Name)
+
 			h.notificationService.Send(domain.NotificationEventIRCReconnected, domain.NotificationPayload{
 				Subject: "IRC Reconnected",
 				Message: fmt.Sprintf("Network: %s", h.network.Name),
@@ -383,7 +436,7 @@ func (h *Handler) onConnect(m ircmsg.Message) {
 		}
 		h.m.Unlock()
 
-		h.log.Debug().Msgf("connected to: %s", h.network.Name)
+		h.log.Info().Msgf("network connected to: %s", h.network.Name)
 	}()
 
 	time.Sleep(1 * time.Second)
@@ -416,17 +469,17 @@ func (h *Handler) onDisconnect(m ircmsg.Message) {
 
 	h.haveDisconnected = true
 
+	manuallyDisconnected := h.clientState == ircStopped
+
 	// check if we are responsible for disconnect
-	if !h.manuallyDisconnected {
+	if !manuallyDisconnected {
 		// only send notification if we did not initiate disconnect/restart/stop
 		h.notificationService.Send(domain.NotificationEventIRCDisconnected, domain.NotificationPayload{
 			Subject: "IRC Disconnected unexpectedly",
 			Message: fmt.Sprintf("Network: %s", h.network.Name),
 		})
-	} else {
-		// reset
-		h.manuallyDisconnected = false
 	}
+
 	h.m.Unlock()
 }
 
@@ -496,9 +549,22 @@ func (h *Handler) handleNickServ(msg ircmsg.Message) {
 	if contains(msg.Params[1], "invalid parameters", "help identify") {
 		h.log.Debug().Msgf("NOTICE nickserv invalid: %v", msg.Params)
 
-		if err := h.client.Send("PRIVMSG", "NickServ", fmt.Sprintf("IDENTIFY %s %s", h.network.Auth.Account, h.network.Auth.Password)); err != nil {
+		h.Send("PRIVMSG", "NickServ", fmt.Sprintf("IDENTIFY %s %s", h.network.Auth.Account, h.network.Auth.Password))
-			return
+	}
-		}
+}
+
+func (h *Handler) getClient() *ircevent.Connection {
+	h.m.RLock()
+	client := h.client
+	h.m.RUnlock()
+	return client
+}
+
+func (h *Handler) Send(command string, params ...string) error {
+	if client := h.getClient(); client != nil {
+		return client.Send(command, params...)
+	} else {
+		return clientDisconnected
 	}
 }
 
@@ -517,28 +583,17 @@ func (h *Handler) setBotMode() {
 }
 
 // authenticate sends NickServIdentify if not authenticated
-func (h *Handler) authenticate() bool {
+func (h *Handler) authenticate() {
 	h.m.RLock()
-	defer h.m.RUnlock()
+	shouldSendNickserv := !h.authenticated && !h.saslauthed && h.network.Auth.Password != ""
+	h.m.RUnlock()
 
-	if h.authenticated {
+	if shouldSendNickserv {
-		return true
-	}
-
-	if !h.saslauthed && h.network.Auth.Password != "" {
 		h.log.Trace().Msg("on connect not authenticated and password not empty: send nickserv identify")
-		if err := h.NickServIdentify(h.network.Auth.Password); err != nil {
+		h.NickServIdentify(h.network.Auth.Password)
-			h.log.Error().Stack().Err(err).Msg("error nickserv")
-			return false
-		}
-
-		return false
 	} else {
 		h.setAuthenticated()
 	}
-
-	// return and wait for NOTICE of nickserv auth
-	return true
 }
 
 // handleSASLSuccess we get here early so set saslauthed before we hit onConnect
@@ -551,9 +606,18 @@ func (h *Handler) handleSASLSuccess(msg ircmsg.Message) {
 // setAuthenticated sets the states for authenticated, connectionErrors, failedNickServAttempts
 // and then sends inviteCommand and after that JoinChannels
 func (h *Handler) setAuthenticated() {
-	h.authenticated = true
+	h.m.Lock()
-	h.connectionErrors = []string{}
+	alreadyAuthenticated := h.authenticated
-	h.failedNickServAttempts = 0
+	if !alreadyAuthenticated {
+		h.authenticated = true
+		h.connectionErrors = []string{}
+		h.failedNickServAttempts = 0
+	}
+	h.m.Unlock()
+
+	if alreadyAuthenticated {
+		return
+	}
 
 	h.inviteCommand()
 	h.JoinChannels()
@@ -594,9 +658,7 @@ func (h *Handler) onNick(msg ircmsg.Message) {
 		return
 	}
 
-	if !h.authenticated {
+	h.authenticate()
-		h.authenticate()
-	}
 }
 
 func (h *Handler) publishSSEMsg(msg domain.IrcMessage) {
@@ -679,24 +741,15 @@ func (h *Handler) JoinChannels() {
 
 // JoinChannel sends join command
 func (h *Handler) JoinChannel(channel string, password string) error {
-	m := ircmsg.Message{
+	params := []string{channel}
-		Command: "JOIN",
-		Params:  []string{channel},
-	}
-
 	// support channel password
 	if password != "" {
-		m.Params = []string{channel, password}
+		params = append(params, password)
 	}
 
-	h.log.Debug().Msgf("sending JOIN command %s", strings.Join(m.Params, " "))
+	h.log.Debug().Msgf("sending JOIN command %s", strings.Join(params, " "))
 
-	if err := h.client.SendIRCMessage(m); err != nil {
+	return h.Send("JOIN", params...)
-		h.log.Error().Stack().Err(err).Msgf("error handling join: %s", channel)
-		return err
-	}
-
-	return nil
 }
 
 // handlePart listens for PART events
@@ -723,14 +776,9 @@ func (h *Handler) handlePart(msg ircmsg.Message) {
 func (h *Handler) PartChannel(channel string) error {
 	h.log.Debug().Msgf("Leaving channel %s", channel)
 
-	if err := h.client.Part(channel); err != nil {
+	return h.Send("PART", channel)
-		h.log.Error().Err(err).Msgf("error handling part: %s", channel)
-		return err
-	}
 
 	// TODO remove announceProcessor
-
-	return nil
 }
 
 // handleJoined listens for 366 JOIN events
@@ -782,9 +830,6 @@ func (h *Handler) handleJoined(msg ircmsg.Message) {
 	}
 
 	h.log.Info().Msgf("Monitoring channel %s", channel)
-
-	// reset log level to Trace now that we are monitoring a channel
-	h.client.Log = zstdlog.NewStdLoggerWithLevel(h.log.With().Logger(), zerolog.TraceLevel)
 }
 
 // sendConnectCommands sends invite commands
@@ -800,15 +845,12 @@ func (h *Handler) sendConnectCommands(msg string) error {
 			continue
 		}
 
-		m := ircmsg.Message{
-			Command: "PRIVMSG",
-			Params:  strings.Split(cmd, " "),
-		}
-
 		h.log.Debug().Msgf("sending connect command: %s", cmd)
 
-		if err := h.client.SendIRCMessage(m); err != nil {
+		params := strings.SplitN(cmd, " ", 2)
-			h.log.Error().Err(err).Msgf("error handling connect command: %v", m)
+
+		if err := h.Send("PRIVMSG", params...); err != nil {
+			h.log.Error().Err(err).Msgf("error handling connect command: %s", cmd)
 			return err
 		}
 
@@ -836,7 +878,7 @@ func (h *Handler) handleInvite(msg ircmsg.Message) {
 
 	h.log.Debug().Msgf("INVITE from %s, joining %s", msg.Nick(), channel)
 
-	if err := h.client.Join(msg.Params[1]); err != nil {
+	if err := h.Send("JOIN", msg.Params[1]); err != nil {
 		h.log.Error().Stack().Err(err).Msgf("error handling join: %s", msg.Params[1])
 		return
 	}
@@ -846,15 +888,8 @@ func (h *Handler) handleInvite(msg ircmsg.Message) {
 
 // NickServIdentify sends NickServ Identify commands
 func (h *Handler) NickServIdentify(password string) error {
-	m := ircmsg.Message{
+	if err := h.Send("PRIVMSG", "NickServ", fmt.Sprintf("IDENTIFY %s", password)); err != nil {
-		Command: "PRIVMSG",
+		h.log.Error().Stack().Err(err).Msgf("error identifying with nickserv")
-		Params:  []string{"NickServ", "IDENTIFY", password},
-	}
-
-	h.log.Debug().Msgf("NickServ: %v", m)
-
-	if err := h.client.SendIRCMessage(m); err != nil {
-		h.log.Error().Stack().Err(err).Msgf("error identifying with nickserv: %v", m)
 		return err
 	}
 
@@ -865,19 +900,29 @@ func (h *Handler) NickServIdentify(password string) error {
 func (h *Handler) NickChange(nick string) error {
 	h.log.Debug().Msgf("NICK change: %s", nick)
 
-	h.client.SetNick(nick)
+	if client := h.getClient(); client != nil {
+		client.SetNick(nick)
+	}
 
 	return nil
 }
 
 // CurrentNick returns our current nick set by the server
 func (h *Handler) CurrentNick() string {
-	return h.client.CurrentNick()
+	if client := h.getClient(); client != nil {
+		return client.CurrentNick()
+	} else {
+		return ""
+	}
 }
 
 // PreferredNick returns our preferred nick from settings
 func (h *Handler) PreferredNick() string {
-	return h.client.PreferredNick()
+	if client := h.getClient(); client != nil {
+		return client.PreferredNick()
+	} else {
+		return ""
+	}
 }
 
 // listens for MODE events
@@ -886,9 +931,7 @@ func (h *Handler) handleMode(msg ircmsg.Message) {
 
 	// if our nick and user mode +r (Identifies the nick as being Registered (settable by services only)) then return
 	if h.isOurCurrentNick(msg.Params[0]) && strings.Contains(msg.Params[1], "+r") {
-		if !h.authenticated {
+		h.setAuthenticated()
-			h.setAuthenticated()
-		}
 
 		return
 	}
@@ -907,7 +950,7 @@ func (h *Handler) handleModeUnknownFlag(msg ircmsg.Message) {
 func (h *Handler) SendMsg(channel, msg string) error {
 	h.log.Debug().Msgf("sending msg command: %s", msg)
 
-	if err := h.client.Privmsg(channel, msg); err != nil {
+	if err := h.Send("PRIVMSG", channel, msg); err != nil {
 		h.log.Error().Stack().Err(err).Msgf("error sending msg: %s", msg)
 		return err
 	}
@@ -965,46 +1008,43 @@ func (h *Handler) addConnectError(message string) {
 	h.connectionErrors = append(h.connectionErrors, message)
 }
 
-// Healthy if enabled but not monitoring return false,
+func (h *Handler) ReportStatus(netw *domain.IrcNetworkWithHealth) {
-//
+	h.m.RLock()
-// if any channel is enabled but not monitoring return false,
+	defer h.m.RUnlock()
-// else return true
+
-func (h *Handler) Healthy() bool {
+	// only set connected and connected since if we have an active handler and connection
-	isHealthy := h.networkHealth()
+	if !h.network.Enabled {
-	if !isHealthy {
+		return
-		h.log.Warn().Msg("network unhealthy")
+	}
-		return isHealthy
+	if h.client == nil {
+		return
+	}
+	netw.Connected = h.connectedSince != time.Time{}
+	netw.ConnectedSince = h.connectedSince
+	netw.CurrentNick = h.client.CurrentNick()
+	netw.PreferredNick = h.client.PreferredNick()
+
+	if !netw.Connected {
+		return
 	}
 
-	h.log.Trace().Msg("network healthy")
+	channelsHealthy := true
+	for _, channel := range h.network.Channels {
+		name := strings.ToLower(channel.Name)
 
-	return true
+		if chanHealth, ok := h.channelHealth[name]; ok {
-}
+			chanHealth.m.RLock()
-
+			channelsHealthy = channelsHealthy && chanHealth.monitoring
-func (h *Handler) networkHealth() bool {
+			chanHealth.m.RUnlock()
-	if h.network.Enabled {
-		if !h.client.Connected() {
-			return false
-		}
-		if (h.connectedSince == time.Time{}) {
-			return false
 		}
 
-		for _, channel := range h.network.Channels {
+		if !channelsHealthy {
-			name := strings.ToLower(channel.Name)
+			break
-
-			if chanHealth, ok := h.channelHealth[name]; ok {
-				chanHealth.m.RLock()
-
-				if !chanHealth.monitoring {
-					chanHealth.m.RUnlock()
-					return false
-				}
-
-				chanHealth.m.RUnlock()
-			}
 		}
 	}
 
-	return true
+	netw.Healthy = channelsHealthy
+
+	// TODO with Go 1.21 this can moved from golang.org/x/exp/slices to built in slices:
+	netw.ConnectionErrors = slices.Clone(h.connectionErrors)
 }

internal/irc/service.go

@@ -9,7 +9,6 @@ import (
 	"fmt"
 	"strings"
 	"sync"
-	"time"
 
 	"github.com/autobrr/autobrr/internal/domain"
 	"github.com/autobrr/autobrr/internal/indexer"
@@ -127,7 +126,7 @@ func (s *service) startNetwork(network domain.IrcNetwork) error {
 	if existingHandler, found := s.handlers[network.ID]; found {
 		s.log.Debug().Msgf("starting network: %s", network.Name)
 
-		if !existingHandler.client.Connected() {
+		if existingHandler.Stopped() {
 			go func(handler *Handler) {
 				if err := handler.Run(); err != nil {
 					s.log.Error().Err(err).Msgf("failed to start existing handler for network: %s", handler.network.Name)
@@ -178,7 +177,7 @@ func (s *service) checkIfNetworkRestartNeeded(network *domain.IrcNetwork) error
 		// if server, tls, invite command, port : changed - restart
 		// if nickserv account, nickserv password : changed - stay connected, and change those
 		// if channels len : changes - join or leave
-		if existingHandler.client.Connected() {
+		if !existingHandler.Stopped() {
 			handler := existingHandler.GetNetwork()
 			restartNeeded := false
 			var fieldsChanged []string
@@ -341,6 +340,10 @@ func (s *service) RestartNetwork(ctx context.Context, id int64) error {
 		return err
 	}
 
+	if !network.Enabled {
+		return errors.New("network disabled, could not restart")
+	}
+
 	return s.restartNetwork(*network)
 }
 
@@ -459,26 +462,7 @@ func (s *service) GetNetworksWithHealth(ctx context.Context) ([]domain.IrcNetwor
 
 		handler, ok := s.handlers[n.ID]
 		if ok {
-			handler.m.RLock()
+			handler.ReportStatus(&netw)
-
-			// only set connected and connected since if we have an active handler and connection
-			if handler.client.Connected() {
-
-				netw.Connected = handler.connectedSince != time.Time{}
-				netw.ConnectedSince = handler.connectedSince
-
-				// current and preferred nick is only available if the network is connected
-				netw.CurrentNick = handler.CurrentNick()
-				netw.PreferredNick = handler.PreferredNick()
-			}
-			netw.Healthy = handler.Healthy()
-
-			// if we have any connection errors like bad nickserv auth add them here
-			if len(handler.connectionErrors) > 0 {
-				netw.ConnectionErrors = handler.connectionErrors
-			}
-
-			handler.m.RUnlock()
 		}
 
 		channels, err := s.repo.ListChannels(n.ID)

web/src/screens/settings/Irc.tsx

@@ -536,14 +536,20 @@ const ListItemDropdown = ({
               {({ active }) => (
                 <button
                   className={classNames(
-                    active ? "bg-blue-600 text-white" : "text-gray-900 dark:text-gray-300",
+                    "font-medium group flex rounded-md items-center w-full px-2 py-2 text-sm",
-                    "font-medium group flex rounded-md items-center w-full px-2 py-2 text-sm"
+                    network.enabled
+                      ? active ? "bg-blue-600 text-white" : "text-gray-900 dark:text-gray-300"
+                      : "text-gray-600 dark:text-gray-500"
                   )}
                   onClick={() => restart(network.id)}
+                  disabled={!network.enabled}
+                  title={network.enabled ? "Restart" : "Network disabled"}
                 >
                   <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" strokeWidth={1.5} stroke="currentColor" className={classNames(
-                    active ? "text-white" : "text-blue-500",
+                    "w-5 h-5 mr-2",
-                    "w-5 h-5 mr-2"
+                    network.enabled
+                    ? active ? "text-white" : "text-blue-500 dark:text-blue-500"
+                    : "text-gray-600 dark:text-gray-500"
                   )}>
                     <path strokeLinecap="round" strokeLinejoin="round" d="M5.636 5.636a9 9 0 1012.728 0M12 3v9" />
                   </svg>