Fix missing go.sum entry errors in staging.Dockerfile

Makefile

@@ -2,7 +2,7 @@
 
 COMMIT := $(shell git rev-parse --short HEAD)
 TD_COMMIT := "5bbfc1cf5dab94f82e02f3430ded7241d4653551"
-VERSION := "v1.9.5"
+VERSION := "v1.10.0-dev"
 MAKEOPTS := "-j4"
 
 all:

go.mod

@@ -4,6 +4,7 @@ go 1.19
 
 require (
 	github.com/dgraph-io/badger/v4 v4.1.0
+	github.com/google/uuid v1.1.1
 	github.com/pkg/errors v0.9.1
 	github.com/santhosh-tekuri/jsonschema v1.2.4
 	github.com/sirupsen/logrus v1.4.2
@@ -23,7 +24,6 @@ require (
 	github.com/golang/protobuf v1.3.2 // indirect
 	github.com/golang/snappy v0.0.3 // indirect
 	github.com/google/flatbuffers v1.12.1 // indirect
-	github.com/google/uuid v1.1.1 // indirect
 	github.com/klauspost/compress v1.12.3 // indirect
 	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
 	go.opencensus.io v0.22.5 // indirect
@@ -33,5 +33,6 @@ require (
 	nhooyr.io/websocket v1.6.5 // indirect
 )
 
-replace gosrc.io/xmpp => dev.narayana.im/narayana/go-xmpp v0.0.0-20220524203317-306b4ff58e8f
+replace gosrc.io/xmpp => dev.narayana.im/narayana/go-xmpp v0.0.0-20240512132113-6725c3862314
+
 replace github.com/zelenin/go-tdlib => dev.narayana.im/narayana/go-tdlib v0.0.0-20240124222245-b4c12addb061

go.sum

@@ -7,6 +7,10 @@ dev.narayana.im/narayana/go-tdlib v0.0.0-20240124222245-b4c12addb061 h1:CWAQT74L
 dev.narayana.im/narayana/go-tdlib v0.0.0-20240124222245-b4c12addb061/go.mod h1:Xs8fXbk5n7VaPyrSs9DP7QYoBScWYsjX+lUcWmx1DIU=
 dev.narayana.im/narayana/go-xmpp v0.0.0-20220524203317-306b4ff58e8f h1:6249ajbMjgYz53Oq0IjTvjHXbxTfu29Mj1J/6swRHs4=
 dev.narayana.im/narayana/go-xmpp v0.0.0-20220524203317-306b4ff58e8f/go.mod h1:L3NFMqYOxyLz3JGmgFyWf7r9htE91zVGiK40oW4RwdY=
+dev.narayana.im/narayana/go-xmpp v0.0.0-20240131013505-18c46e6c59fd h1:+UW+E7JjI88aH4beDn1cw6D8rs1I061hN91HU4Y4pT8=
+dev.narayana.im/narayana/go-xmpp v0.0.0-20240131013505-18c46e6c59fd/go.mod h1:L3NFMqYOxyLz3JGmgFyWf7r9htE91zVGiK40oW4RwdY=
+dev.narayana.im/narayana/go-xmpp v0.0.0-20240512132113-6725c3862314 h1:29/NjOGOUDceO73Hk4Nj4uVa1je8MULJlsDSvKxSN/k=
+dev.narayana.im/narayana/go-xmpp v0.0.0-20240512132113-6725c3862314/go.mod h1:L3NFMqYOxyLz3JGmgFyWf7r9htE91zVGiK40oW4RwdY=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/agnivade/wasmbrowsertest v0.3.1/go.mod h1:zQt6ZTdl338xxRaMW395qccVE2eQm0SjC/SDz0mPWQI=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=

staging.Dockerfile

@@ -26,8 +26,8 @@ WORKDIR /src
 RUN go env -w GOCACHE=/go-cache
 RUN go env -w GOMODCACHE=/gomod-cache
 RUN --mount=type=cache,target=/gomod-cache \
-    --mount=type=bind,source=./,target=/src \
-    go mod download
+    --mount=type=bind,source=./,target=/src,rw \
+    /bin/bash -c 'go mod tidy; go get -t'
 
 FROM cache AS build
 ARG MAKEOPTS

telegabber.go

@@ -16,7 +16,7 @@ import (
 	goxmpp "gosrc.io/xmpp"
 )
 
-var version string = "1.9.5"
+var version string = "1.10.0-dev"
 var commit string
 
 var sm *goxmpp.StreamManager

telegram/utils.go

@@ -46,6 +46,7 @@ type messageStub struct {
 }
 
 var errOffline = errors.New("TDlib instance is offline")
+var errOverLimit = errors.New("Over limit")
 
 var spaceRegex = regexp.MustCompile(`\s+`)
 var replyRegex = regexp.MustCompile("\\A>>? ?([0-9]+)\\n")
@@ -53,6 +54,28 @@ var replyRegex = regexp.MustCompile("\\A>>? ?([0-9]+)\\n")
 const newlineChar string = "\n"
 const messageHeaderSeparator string = " | " // no hrunicode allowed here yet
 
+// ChatType is an enum of chat types, roughly corresponding to TDLib's one but better
+type ChatType int
+
+const (
+	ChatTypeUnknown ChatType = iota
+	ChatTypePrivate
+	ChatTypeBasicGroup
+	ChatTypeSupergroup
+	ChatTypeSecret
+	ChatTypeChannel
+)
+
+// MembersList is an enum of member list filters
+type MembersList int
+
+const (
+	MembersListMembers MembersList = iota
+	MembersListRestricted
+	MembersListBanned
+	MembersListBannedAndAdministrators
+)
+
 // GetContactByUsername resolves username to user id retrieves user and chat information
 func (c *Client) GetContactByUsername(username string) (*client.Chat, *client.User, error) {
 	if !c.Online() {
@@ -130,10 +153,10 @@ func (c *Client) GetContactByID(id int64, chat *client.Chat) (*client.Chat, *cli
 	return chat, user, nil
 }
 
-// IsPM checks if a chat is PM
-func (c *Client) IsPM(id int64) (bool, error) {
+// GetChatType obtains chat type from its information
+func (c *Client) GetChatType(id int64) (ChatType, error) {
 	if !c.Online() || id == 0 {
-		return false, errOffline
+		return ChatTypeUnknown, errOffline
 	}
 
 	var err error
@@ -144,14 +167,38 @@ func (c *Client) IsPM(id int64) (bool, error) {
 			ChatId: id,
 		})
 		if err != nil {
-			return false, err
+			return ChatTypeUnknown, err
 		}
 
 		c.cache.SetChat(id, chat)
 	}
 
 	chatType := chat.Type.ChatTypeType()
-	if chatType == client.TypeChatTypePrivate || chatType == client.TypeChatTypeSecret {
+	if chatType == client.TypeChatTypePrivate {
+		return ChatTypePrivate, nil
+	} else if chatType == client.TypeChatTypeBasicGroup {
+		return ChatTypeBasicGroup, nil
+	} else if chatType == client.TypeChatTypeSupergroup {
+		supergroup, _ := chat.Type.(*client.ChatTypeSupergroup)
+		if supergroup.IsChannel {
+			return ChatTypeChannel, nil
+		}
+		return ChatTypeSupergroup, nil
+	} else if chatType == client.TypeChatTypeSecret {
+		return ChatTypeSecret, nil
+	}
+
+	return ChatTypeUnknown, errors.New("Unknown chat type")
+}
+
+// IsPM checks if a chat is PM
+func (c *Client) IsPM(id int64) (bool, error) {
+	typ, err := c.GetChatType(id)
+	if err != nil {
+		return false, err
+	}
+
+	if typ == ChatTypePrivate || typ == ChatTypeSecret {
 		return true, nil
 	}
 	return false, nil
@@ -294,7 +341,8 @@ func (c *Client) ProcessStatusUpdate(chatID int64, status string, show string, o
 	return c.sendPresence(newArgs...)
 }
 
-func (c *Client) formatContact(chatID int64) string {
+// FormatContact retrieves a complete "full name (@usernames)" string for display
+func (c *Client) FormatContact(chatID int64) string {
 	if chatID == 0 {
 		return ""
 	}
@@ -326,23 +374,27 @@ func (c *Client) formatContact(chatID int64) string {
 	return str
 }
 
-func (c *Client) getSenderId(message *client.Message) (senderId int64) {
-	if message.SenderId != nil {
-		switch message.SenderId.MessageSenderType() {
+func (c *Client) GetSenderId(sender client.MessageSender) (senderId int64) {
+	switch sender.MessageSenderType() {
 	case client.TypeMessageSenderUser:
-			senderUser, _ := message.SenderId.(*client.MessageSenderUser)
+		senderUser, _ := sender.(*client.MessageSenderUser)
 		senderId = senderUser.UserId
 	case client.TypeMessageSenderChat:
-			senderChat, _ := message.SenderId.(*client.MessageSenderChat)
+		senderChat, _ := sender.(*client.MessageSenderChat)
 		senderId = senderChat.ChatId
 	}
+	return
 }
 
+func (c *Client) getMessageSenderId(message *client.Message) (senderId int64) {
+	if message.SenderId != nil {
+		senderId = c.GetSenderId(message.SenderId)
+	}
 	return
 }
 
 func (c *Client) formatSender(message *client.Message) string {
-	return c.formatContact(c.getSenderId(message))
+	return c.FormatContact(c.getMessageSenderId(message))
 }
 
 func (c *Client) messageToStub(message *client.Message, preview bool, text string) *messageStub {
@@ -392,7 +444,7 @@ func (c *Client) getMessageReply(message *client.Message, preview bool, noConten
 			}
 
 			gatewayReply = &gateway.Reply{
-				Author: fmt.Sprintf("%v@%s", c.getSenderId(replyMsg), gateway.Jid.Full()),
+				Author: fmt.Sprintf("%v@%s", c.getMessageSenderId(replyMsg), gateway.Jid.Full()),
 				Id:     replyId,
 			}
 		} else if !noContent {
@@ -409,7 +461,7 @@ func (c *Client) getMessageReply(message *client.Message, preview bool, noConten
 			}
 
 			tgReply = &messageStub{
-				Sender: c.formatOrigin(replyTo.Origin) + " @ " + c.formatContact(replyTo.ChatId),
+				Sender: c.formatOrigin(replyTo.Origin) + " @ " + c.FormatContact(replyTo.ChatId),
 				Date:   replyTo.OriginSendDate,
 				Text:   text,
 			}
@@ -479,14 +531,14 @@ func (c *Client) formatOrigin(origin client.MessageOrigin) string {
 	switch origin.MessageOriginType() {
 	case client.TypeMessageOriginUser:
 		originUser := origin.(*client.MessageOriginUser)
-		return c.formatContact(originUser.SenderUserId)
+		return c.FormatContact(originUser.SenderUserId)
 	case client.TypeMessageOriginChat:
 		originChat := origin.(*client.MessageOriginChat)
 		var signature string
 		if originChat.AuthorSignature != "" {
 			signature = fmt.Sprintf(" (%s)", originChat.AuthorSignature)
 		}
-		return c.formatContact(originChat.SenderChatId) + signature
+		return c.FormatContact(originChat.SenderChatId) + signature
 	case client.TypeMessageOriginHiddenUser:
 		originUser := origin.(*client.MessageOriginHiddenUser)
 		return originUser.SenderName
@@ -496,7 +548,7 @@ func (c *Client) formatOrigin(origin client.MessageOrigin) string {
 		if channel.AuthorSignature != "" {
 			signature = fmt.Sprintf(" (%s)", channel.AuthorSignature)
 		}
-		return c.formatContact(channel.ChatId) + signature
+		return c.FormatContact(channel.ChatId) + signature
 	}
 	return "Unknown origin type"
 }
@@ -665,13 +717,13 @@ func (c *Client) messageContentToText(content client.MessageContent, chatId int6
 
 		text := "invited "
 		if len(addMembers.MemberUserIds) > 0 {
-			text += c.formatContact(addMembers.MemberUserIds[0])
+			text += c.FormatContact(addMembers.MemberUserIds[0])
 		}
 
 		return text
 	case client.TypeMessageChatDeleteMember:
 		deleteMember, _ := content.(*client.MessageChatDeleteMember)
-		return "kicked " + c.formatContact(deleteMember.UserId)
+		return "kicked " + c.FormatContact(deleteMember.UserId)
 	case client.TypeMessagePinMessage:
 		pinMessage, _ := content.(*client.MessagePinMessage)
 		return "pinned message: " + c.formatMessage(chatId, pinMessage.MessageId, preview, nil)
@@ -821,7 +873,7 @@ func (c *Client) messageContentToText(content client.MessageContent, chatId int6
 		}
 	case client.TypeMessageChatSetMessageAutoDeleteTime:
 		ttl, _ := content.(*client.MessageChatSetMessageAutoDeleteTime)
-		name := c.formatContact(ttl.FromUserId)
+		name := c.FormatContact(ttl.FromUserId)
 		if name == "" {
 			if ttl.MessageAutoDeleteTime == 0 {
 				return "The self-destruct timer was disabled"
@@ -1127,7 +1179,7 @@ func (c *Client) ProcessOutgoingMessage(chatID int64, text string, returnJid str
 
 	if replaceId == 0 && (strings.HasPrefix(text, "/") || strings.HasPrefix(text, "!")) {
 		// try to execute commands
-		response, isCommand := c.ProcessChatCommand(chatID, text)
+		response, isCommand, _ := c.ProcessChatCommand(chatID, text)
 		if response != "" {
 			c.returnMessage(returnJid, chatID, response)
 		}
@@ -1628,3 +1680,76 @@ func (c *Client) usernamesToString(usernames []string) string {
 	}
 	return strings.Join(atUsernames, ", ")
 }
+
+// GetChatMembers retrieves a list of chat members. "Limited" mode works only if there are no more than 20 members at all
+func (c *Client) GetChatMembers(chatID int64, limited bool, query string, membersList MembersList) ([]*client.ChatMember, error) {
+	var filters []client.ChatMembersFilter
+	switch membersList {
+	case MembersListMembers:
+		filters = []client.ChatMembersFilter{&client.ChatMembersFilterMembers{}}
+	case MembersListRestricted:
+		filters = []client.ChatMembersFilter{&client.ChatMembersFilterRestricted{}}
+	case MembersListBanned:
+		filters = []client.ChatMembersFilter{&client.ChatMembersFilterBanned{}}
+	case MembersListBannedAndAdministrators:
+		filters = []client.ChatMembersFilter{&client.ChatMembersFilterBanned{}, &client.ChatMembersFilterAdministrators{}}
+	}
+
+	limit := int32(9999)
+	if limited {
+		limit = 20
+
+		chat, _, err := c.GetContactByID(chatID, nil)
+		if err != nil {
+			return nil, err
+		} else if chat == nil {
+			return nil, errors.New("Chat not found")
+		}
+
+		chatType := chat.Type.ChatTypeType()
+		if chatType == client.TypeChatTypeBasicGroup {
+			basicGroupType, _ := chat.Type.(*client.ChatTypeBasicGroup)
+			fullInfo, err := c.client.GetBasicGroupFullInfo(&client.GetBasicGroupFullInfoRequest{
+				BasicGroupId: basicGroupType.BasicGroupId,
+			})
+			if err != nil {
+				return nil, err
+			}
+
+			if len(fullInfo.Members) > int(limit) {
+				return nil, errOverLimit
+			}
+
+			return fullInfo.Members, nil
+		} else if chatType == client.TypeChatTypeSupergroup {
+			supergroupType, _ := chat.Type.(*client.ChatTypeSupergroup)
+			fullInfo, err := c.client.GetSupergroupFullInfo(&client.GetSupergroupFullInfoRequest{
+				SupergroupId: supergroupType.SupergroupId,
+			})
+			if err != nil {
+				return nil, err
+			}
+
+			if fullInfo.MemberCount > limit {
+				return nil, errOverLimit
+			}
+		} else {
+			return nil, errors.New("Inapplicable chat type")
+		}
+	}
+
+	var members []*client.ChatMember
+	for _, filter := range filters {
+		chatMembers, err := c.client.SearchChatMembers(&client.SearchChatMembersRequest{
+			ChatId: chatID,
+			Limit:  limit,
+			Query:  query,
+			Filter: filter,
+		})
+		if err != nil {
+			return nil, err
+		}
+		members = append(members, chatMembers.Members...)
+	}
+	return members, nil
+}

telegram/utils_test.go

@@ -593,7 +593,7 @@ func TestMessageToPrefix8(t *testing.T) {
 
 func GetSenderIdEmpty(t *testing.T) {
 	message := client.Message{}
-	senderId := (&Client{}).getSenderId(&message)
+	senderId := (&Client{}).getMessageSenderId(&message)
 	if senderId != 0 {
 		t.Errorf("Wrong sender id: %v", senderId)
 	}
@@ -605,7 +605,7 @@ func GetSenderIdUser(t *testing.T) {
 			UserId: 42,
 		},
 	}
-	senderId := (&Client{}).getSenderId(&message)
+	senderId := (&Client{}).getMessageSenderId(&message)
 	if senderId != 42 {
 		t.Errorf("Wrong sender id: %v", senderId)
 	}
@@ -617,7 +617,7 @@ func GetSenderIdChat(t *testing.T) {
 			ChatId: -42,
 		},
 	}
-	senderId := (&Client{}).getSenderId(&message)
+	senderId := (&Client{}).getMessageSenderId(&message)
 	if senderId != -42 {
 		t.Errorf("Wrong sender id: %v", senderId)
 	}

xmpp/handlers.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"github.com/pkg/errors"
 	"io"
+	"sort"
 	"strconv"
 	"strings"
 
@@ -26,6 +27,7 @@ const (
 	TypeVCard4
 )
 const NodeVCard4 string = "urn:xmpp:vcard4"
+const NSCommand string = "http://jabber.org/protocol/commands"
 
 func logPacketType(p stanza.Packet) {
 	log.Warnf("Ignoring packet: %T\n", p)
@@ -53,14 +55,14 @@ func HandleIq(s xmpp.Sender, p stanza.Packet) {
 				return
 			}
 		}
-		_, ok = iq.Payload.(*stanza.DiscoInfo)
+		discoInfo, ok := iq.Payload.(*stanza.DiscoInfo)
 		if ok {
-			go handleGetDiscoInfo(s, iq)
+			go handleGetDiscoInfo(s, iq, discoInfo)
 			return
 		}
-		_, ok = iq.Payload.(*stanza.DiscoItems)
+		discoItems, ok := iq.Payload.(*stanza.DiscoItems)
 		if ok {
-			go handleGetDiscoItems(s, iq)
+			go handleGetDiscoItems(s, iq, discoItems)
 			return
 		}
 		_, ok = iq.Payload.(*extensions.QueryRegister)
@@ -74,6 +76,11 @@ func HandleIq(s xmpp.Sender, p stanza.Packet) {
 			go handleSetQueryRegister(s, iq, query)
 			return
 		}
+		command, ok := iq.Payload.(*stanza.Command)
+		if ok {
+			go handleSetQueryCommand(s, iq, command)
+			return
+		}
 	}
 }
 
@@ -223,7 +230,7 @@ func HandleMessage(s xmpp.Sender, p stanza.Packet) {
 		} else {
 			toJid, err := stanza.NewJid(msg.To)
 			if err == nil && toJid.Bare() == gatewayJid && (strings.HasPrefix(msg.Body, "/") || strings.HasPrefix(msg.Body, "!")) {
-				response := session.ProcessTransportCommand(msg.Body, resource)
+				response, _ := session.ProcessTransportCommand(msg.Body, resource)
 				if response != "" {
 					gateway.SendServiceMessage(msg.From, response, component)
 				}
@@ -468,7 +475,22 @@ func handleGetVcardIq(s xmpp.Sender, iq *stanza.IQ, typ byte) {
 	_ = gateway.ResumableSend(component, &answer)
 }
 
-func handleGetDiscoInfo(s xmpp.Sender, iq *stanza.IQ) {
+func getTelegramChatType(from string, to string) (telegram.ChatType, error) {
+	toId, ok := toToID(to)
+	if ok {
+		bare, _, ok := gateway.SplitJID(from)
+		if ok {
+			session, ok := sessions[bare]
+			if ok {
+				return session.GetChatType(toId)
+			}
+		}
+	}
+
+	return telegram.ChatTypeUnknown, errors.New("Unknown chat type")
+}
+
+func handleGetDiscoInfo(s xmpp.Sender, iq *stanza.IQ, di *stanza.DiscoInfo) {
 	answer, err := stanza.NewIQ(stanza.Attrs{
 		Type: stanza.IQTypeResult,
 		From: iq.To,
@@ -483,6 +505,7 @@ func handleGetDiscoInfo(s xmpp.Sender, iq *stanza.IQ) {
 
 	disco := answer.DiscoInfo()
 	_, ok := toToID(iq.To)
+	if di.Node == "" {
 		if ok {
 			disco.AddIdentity("", "account", "registered")
 			disco.AddFeatures(stanza.NSMsgChatMarkers)
@@ -491,6 +514,29 @@ func handleGetDiscoInfo(s xmpp.Sender, iq *stanza.IQ) {
 			disco.AddIdentity("Telegram Gateway", "gateway", "telegram")
 			disco.AddFeatures("jabber:iq:register")
 		}
+		disco.AddFeatures(NSCommand)
+	} else {
+		chatType, chatTypeErr := getTelegramChatType(iq.From, iq.To)
+
+		var cmdType telegram.CommandType
+		if ok {
+			cmdType = telegram.CommandTypeChat
+		} else {
+			cmdType = telegram.CommandTypeTransport
+		}
+
+		for name, command := range telegram.GetCommands(cmdType) {
+			if di.Node == name {
+				if chatTypeErr == nil && !telegram.IsCommandForChatType(command, chatType) {
+					break
+				}
+				answer.Payload = di
+				di.AddIdentity(telegram.CommandToHelpString(name, command), "automation", "command-node")
+				di.AddFeatures(NSCommand, "jabber:x:data")
+				break
+			}
+		}
+	}
 	answer.Payload = disco
 
 	log.Debugf("%#v", answer)
@@ -504,7 +550,7 @@ func handleGetDiscoInfo(s xmpp.Sender, iq *stanza.IQ) {
 	_ = gateway.ResumableSend(component, answer)
 }
 
-func handleGetDiscoItems(s xmpp.Sender, iq *stanza.IQ) {
+func handleGetDiscoItems(s xmpp.Sender, iq *stanza.IQ, di *stanza.DiscoItems) {
 	answer, err := stanza.NewIQ(stanza.Attrs{
 		Type: stanza.IQTypeResult,
 		From: iq.To,
@@ -517,7 +563,32 @@ func handleGetDiscoItems(s xmpp.Sender, iq *stanza.IQ) {
 		return
 	}
 
+	log.Debugf("discoItems: %#v", di)
+
+	_, ok := toToID(iq.To)
+	if di.Node == NSCommand {
+		answer.Payload = di
+
+		chatType, chatTypeErr := getTelegramChatType(iq.From, iq.To)
+
+		var cmdType telegram.CommandType
+		if ok {
+			cmdType = telegram.CommandTypeChat
+		} else {
+			cmdType = telegram.CommandTypeTransport
+		}
+
+		commands := telegram.GetCommands(cmdType)
+		for _, name := range telegram.SortedCommandKeys(commands) {
+			command := commands[name]
+			if chatTypeErr == nil && !telegram.IsCommandForChatType(command, chatType) {
+				continue
+			}
+			di.AddItem(iq.To, name, telegram.CommandToHelpString(name, command))
+		}
+	} else {
 		answer.Payload = answer.DiscoItems()
+	}
 
 	component, ok := s.(*xmpp.Component)
 	if !ok {
@@ -647,6 +718,195 @@ func handleSetQueryRegister(s xmpp.Sender, iq *stanza.IQ, query *extensions.Quer
 	}
 }
 
+func handleSetQueryCommand(s xmpp.Sender, iq *stanza.IQ, command *stanza.Command) {
+	component, ok := s.(*xmpp.Component)
+	if !ok {
+		log.Error("Not a component")
+		return
+	}
+
+	answer, err := stanza.NewIQ(stanza.Attrs{
+		Type: stanza.IQTypeResult,
+		From: iq.To,
+		To:   iq.From,
+		Id:   iq.Id,
+		Lang: "en",
+	})
+	if err != nil {
+		log.Errorf("Failed to create answer IQ: %v", err)
+		return
+	}
+
+	defer gateway.ResumableSend(component, answer)
+
+	log.Debugf("command: %#v", command)
+
+	bare, resource, ok := gateway.SplitJID(iq.From)
+	if !ok {
+		return
+	}
+	toId, toOk := toToID(iq.To)
+
+	var cmdString string
+	var cmdType telegram.CommandType
+	var form *stanza.Form
+	for _, ce := range command.CommandElements {
+		fo, formOk := ce.(*stanza.Form)
+		if formOk {
+			form = fo
+			break
+		}
+	}
+	if toOk {
+		cmdType = telegram.CommandTypeChat
+	} else {
+		cmdType = telegram.CommandTypeTransport
+	}
+	if form != nil {
+		// just for the case the client messed the order somehow
+		sort.Slice(form.Fields, func(i int, j int) bool {
+			iField := form.Fields[i]
+			jField := form.Fields[j]
+			if iField != nil && jField != nil {
+				ii, iErr := strconv.ParseInt(iField.Var, 10, 64)
+				ji, jErr := strconv.ParseInt(jField.Var, 10, 64)
+				return iErr == nil && jErr == nil && ii < ji
+			}
+			return false
+		})
+
+		var cmd strings.Builder
+		cmd.WriteString("/")
+		cmd.WriteString(command.Node)
+		for _, field := range form.Fields {
+			cmd.WriteString(" ")
+			if len(field.ValuesList) > 0 {
+				cmd.WriteString(field.ValuesList[0])
+			}
+		}
+
+		cmdString = cmd.String()
+	} else {
+		if command.Action == "" || command.Action == stanza.CommandActionExecute {
+			cmd, ok := telegram.GetCommand(cmdType, command.Node)
+			if ok && len(cmd.Arguments) > 0 {
+				var fields []*stanza.Field
+				for i, arg := range cmd.Arguments {
+					var required *string
+					if i < cmd.RequiredArgs {
+						dummyString := ""
+						required = &dummyString
+					}
+
+					var fieldType string
+					var options []stanza.Option
+					if toOk && i == 0 {
+						switch command.Node {
+						case "mute", "kick", "ban", "promote", "unmute", "unban":
+							session, ok := sessions[bare]
+							if ok {
+								var membersList telegram.MembersList
+								switch command.Node {
+								case "unmute":
+									membersList = telegram.MembersListRestricted
+								case "unban":
+									membersList = telegram.MembersListBannedAndAdministrators
+								}
+								members, err := session.GetChatMembers(toId, true, "", membersList)
+								if err == nil {
+									fieldType = stanza.FieldTypeListSingle
+									switch command.Node {
+									// allow empty form
+									case "mute", "unmute":
+										options = append(options, stanza.Option{
+											ValuesList: []string{""},
+										})
+									}
+									for _, member := range members {
+										senderId := session.GetSenderId(member.MemberId)
+										options = append(options, stanza.Option{
+											Label:      session.FormatContact(senderId),
+											ValuesList: []string{strconv.FormatInt(senderId, 10)},
+										})
+									}
+								}
+							}
+						}
+					}
+
+					field := stanza.Field{
+						Var:      strconv.FormatInt(int64(i), 10),
+						Label:    arg,
+						Required: required,
+						Type:     fieldType,
+						Options:  options,
+					}
+					fields = append(fields, &field)
+					log.Debugf("field: %#v", field)
+				}
+				form := stanza.Form{
+					Type:         stanza.FormTypeForm,
+					Title:        command.Node,
+					Instructions: []string{cmd.Description},
+					Fields:       fields,
+				}
+				answer.Payload = &stanza.Command{
+					SessionId:       command.Node,
+					Node:            command.Node,
+					Status:          stanza.CommandStatusExecuting,
+					CommandElements: []stanza.CommandElement{&form},
+				}
+				log.Debugf("form: %#v", form)
+			} else {
+				cmdString = "/" + command.Node
+			}
+		} else if command.Action == stanza.CommandActionCancel {
+			answer.Payload = &stanza.Command{
+				SessionId: command.Node,
+				Node:      command.Node,
+				Status:    stanza.CommandStatusCancelled,
+			}
+		}
+	}
+
+	if cmdString != "" {
+		session, ok := sessions[bare]
+		if !ok {
+			return
+		}
+
+		var response string
+		var success bool
+		if toOk {
+			response, _, success = session.ProcessChatCommand(toId, cmdString)
+		} else {
+			response, success = session.ProcessTransportCommand(cmdString, resource)
+		}
+
+		var noteType string
+		if success {
+			noteType = stanza.CommandNoteTypeInfo
+		} else {
+			noteType = stanza.CommandNoteTypeErr
+		}
+
+		answer.Payload = &stanza.Command{
+			SessionId:       command.Node,
+			Node:            command.Node,
+			Status:          stanza.CommandStatusCompleted,
+			CommandElements: []stanza.CommandElement{
+				&stanza.Note{
+					Text: response,
+					Type: noteType,
+				},
+			},
+		}
+
+	}
+
+	log.Debugf("command response: %#v", answer.Payload)
+}
+
 func iqAnswerSetError(answer *stanza.IQ, payload *extensions.QueryRegister, code int) {
 	answer.Type = stanza.IQTypeError
 	answer.Payload = *payload