mautrix-whatsapp/commands.go

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// mautrix-whatsapp - A Matrix-WhatsApp puppeting bridge.
// Copyright (C) 2019 Tulir Asokan
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package main
import (
"fmt"
"github.com/Rhymen/go-whatsapp"
"maunium.net/go/mautrix"
"maunium.net/go/mautrix/format"
"strings"
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"maunium.net/go/maulogger/v2"
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"maunium.net/go/mautrix-appservice"
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"maunium.net/go/mautrix-whatsapp/database"
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"maunium.net/go/mautrix-whatsapp/types"
"maunium.net/go/mautrix-whatsapp/whatsapp-ext"
)
type CommandHandler struct {
bridge *Bridge
log maulogger.Logger
}
// NewCommandHandler creates a CommandHandler
func NewCommandHandler(bridge *Bridge) *CommandHandler {
return &CommandHandler{
bridge: bridge,
log: bridge.Log.Sub("Command handler"),
}
}
// CommandEvent stores all data which might be used to handle commands
type CommandEvent struct {
Bot *appservice.IntentAPI
Bridge *Bridge
Handler *CommandHandler
RoomID types.MatrixRoomID
User *User
Args []string
}
// Reply sends a reply to command as notice
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func (ce *CommandEvent) Reply(msg string, args ...interface{}) {
content := format.RenderMarkdown(fmt.Sprintf(msg, args...))
content.MsgType = mautrix.MsgNotice
_, err := ce.Bot.SendMessageEvent(ce.User.ManagementRoom, mautrix.EventMessage, content)
if err != nil {
ce.Handler.log.Warnfln("Failed to reply to command from %s: %v", ce.User.MXID, err)
}
}
// Handle handles messages to the bridge
func (handler *CommandHandler) Handle(roomID types.MatrixRoomID, user *User, message string) {
args := strings.Split(message, " ")
cmd := strings.ToLower(args[0])
ce := &CommandEvent{
Bot: handler.bridge.Bot,
Bridge: handler.bridge,
Handler: handler,
RoomID: roomID,
User: user,
Args: args[1:],
}
switch cmd {
case "login":
handler.CommandLogin(ce)
case "help":
handler.CommandHelp(ce)
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case "reconnect":
handler.CommandReconnect(ce)
case "delete-session":
handler.CommandDeleteSession(ce)
case "delete-portal":
handler.CommandDeletePortal(ce)
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case "logout", "disconnect", "sync", "list", "open", "pm":
if ce.User.Conn == nil {
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ce.Reply("You are not logged in. Use the `login` command to log into WhatsApp.")
return
} else if !ce.User.Connected {
ce.Reply("You are not connected to WhatsApp. Use the `reconnect` command to reconnect.")
return
}
switch cmd {
case "logout":
handler.CommandLogout(ce)
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case "disconnect":
handler.CommandDisconnect(ce)
case "sync":
handler.CommandSync(ce)
case "list":
handler.CommandList(ce)
case "open":
handler.CommandOpen(ce)
case "pm":
handler.CommandPM(ce)
}
default:
ce.Reply("Unknown Command")
}
}
const cmdLoginHelp = `login - Authenticate this Bridge as WhatsApp Web Client`
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// CommandLogin handles login command
func (handler *CommandHandler) CommandLogin(ce *CommandEvent) {
if ce.User.Conn == nil {
if !ce.User.Connect(true) {
ce.User.log.Debugln("Connect() returned false, assuming error was logged elsewhere and canceling login.")
return
}
}
ce.User.Login(ce)
}
const cmdLogoutHelp = `logout - Logout from WhatsApp`
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// CommandLogout handles !logout command
func (handler *CommandHandler) CommandLogout(ce *CommandEvent) {
if ce.User.Session == nil {
ce.Reply("You're not logged in.")
return
}
err := ce.User.Conn.Logout()
if err != nil {
ce.User.log.Warnln("Error while logging out:", err)
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ce.Reply("Unknown error while logging out: %v", err)
return
}
_, err = ce.User.Conn.Disconnect()
if err != nil {
ce.User.log.Warnln("Error while disconnecting after logout:", err)
}
ce.User.Connected = false
ce.User.Conn = nil
ce.User.SetSession(nil)
ce.Reply("Logged out successfully.")
}
const cmdDeleteSessionHelp = `delete-session - Delete session information and disconnect from WhatsApp without sending a logout request`
func (handler *CommandHandler) CommandDeleteSession(ce *CommandEvent) {
if ce.User.Session == nil && !ce.User.Connected && ce.User.Conn == nil {
ce.Reply("Nothing to purge: no session information stored and no active connection.")
return
}
ce.User.SetSession(nil)
ce.User.Connected = false
if ce.User.Conn != nil {
_, _ = ce.User.Conn.Disconnect()
ce.User.Conn = nil
}
ce.Reply("Session information purged")
}
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const cmdReconnectHelp = `reconnect - Reconnect to WhatsApp`
func (handler *CommandHandler) CommandReconnect(ce *CommandEvent) {
err := ce.User.Conn.Restore()
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if err == whatsapp.ErrInvalidSession {
if ce.User.Session != nil {
ce.User.log.Debugln("Got invalid session error when reconnecting, but user has session. Retrying using RestoreWithSession()...")
var sess whatsapp.Session
sess, err = ce.User.Conn.RestoreWithSession(*ce.User.Session)
if err == nil {
ce.User.SetSession(&sess)
}
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} else {
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ce.Reply("You are not logged in.")
return
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}
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} else if err == whatsapp.ErrLoginInProgress {
ce.Reply("A login or reconnection is already in progress.")
return
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}
if err != nil {
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ce.User.log.Warnln("Error while reconnecting:", err)
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if err == whatsapp.ErrAlreadyLoggedIn {
if ce.User.Connected {
ce.Reply("You were already connected.")
} else {
ce.User.Connected = true
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ce.User.ConnectionErrors = 0
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ce.Reply("You were already connected, but the bridge hadn't noticed. Fixed that now.")
}
} else if err.Error() == "restore session connection timed out" {
ce.Reply("Reconnection timed out. Is WhatsApp on your phone reachable?")
} else {
ce.Reply("Unknown error while reconnecting: %v", err)
}
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return
}
ce.User.Connected = true
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ce.User.ConnectionErrors = 0
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ce.Reply("Reconnected successfully.")
}
const cmdDisconnectHelp = `disconnect - Disconnect from WhatsApp (without logging out)`
func (handler *CommandHandler) CommandDisconnect(ce *CommandEvent) {
sess, err := ce.User.Conn.Disconnect()
ce.User.Connected = false
if err == whatsapp.ErrNotConnected {
ce.Reply("You were not connected.")
return
} else if err != nil {
ce.User.log.Warnln("Error while disconnecting:", err)
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ce.Reply("Unknown error while disconnecting: %v", err)
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return
}
ce.User.SetSession(&sess)
ce.Reply("Successfully disconnected. Use the `reconnect` command to reconnect.")
}
const cmdHelpHelp = `help - Prints this help`
// CommandHelp handles help command
func (handler *CommandHandler) CommandHelp(ce *CommandEvent) {
cmdPrefix := ""
if ce.User.ManagementRoom != ce.RoomID {
cmdPrefix = handler.bridge.Config.Bridge.CommandPrefix + " "
}
ce.Reply("* " + strings.Join([]string{
cmdPrefix + cmdHelpHelp,
cmdPrefix + cmdLoginHelp,
cmdPrefix + cmdLogoutHelp,
cmdPrefix + cmdDeleteSessionHelp,
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cmdPrefix + cmdReconnectHelp,
cmdPrefix + cmdDisconnectHelp,
cmdPrefix + cmdSyncHelp,
cmdPrefix + cmdListHelp,
cmdPrefix + cmdOpenHelp,
cmdPrefix + cmdPMHelp,
}, "\n* "))
}
const cmdSyncHelp = `sync [--create] - Synchronize contacts from phone and optionally create portals for group chats.`
// CommandSync handles sync command
func (handler *CommandHandler) CommandSync(ce *CommandEvent) {
user := ce.User
create := len(ce.Args) > 0 && ce.Args[0] == "--create"
handler.log.Debugln("Importing all contacts of", user)
_, err := user.Conn.Contacts()
if err != nil {
handler.log.Errorln("Error on update of contacts of user", user, ":", err)
return
}
for jid, contact := range user.Conn.Store.Contacts {
if strings.HasSuffix(jid, whatsappExt.NewUserSuffix) {
puppet := user.bridge.GetPuppetByJID(contact.Jid)
puppet.Sync(user, contact)
} else {
portal := user.bridge.GetPortalByJID(database.GroupPortalKey(contact.Jid))
if len(portal.MXID) > 0 || create {
portal.Sync(user, contact)
}
}
}
ce.Reply("Imported contacts successfully.")
}
func (handler *CommandHandler) CommandDeletePortal(ce *CommandEvent) {
if !ce.User.Admin {
ce.Reply("Only bridge admins can delete portals")
return
}
portal := ce.Bridge.GetPortalByMXID(ce.RoomID)
if portal == nil {
ce.Reply("You must be in a portal room to use that command")
return
}
portal.log.Infoln(ce.User.MXID, "requested deletion of portal.")
portal.Delete()
portal.Cleanup(false)
}
const cmdListHelp = `list - Get a list of all contacts and groups.`
func (handler *CommandHandler) CommandList(ce *CommandEvent) {
var contacts strings.Builder
var groups strings.Builder
for jid, contact := range ce.User.Conn.Store.Contacts {
if strings.HasSuffix(jid, whatsappExt.NewUserSuffix) {
_, _ = fmt.Fprintf(&contacts, "* %s / %s - `%s`\n", contact.Name, contact.Notify, contact.Jid[:len(contact.Jid)-len(whatsappExt.NewUserSuffix)])
} else {
_, _ = fmt.Fprintf(&groups, "* %s - `%s`\n", contact.Name, contact.Jid)
}
}
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ce.Reply("### Contacts\n%s\n\n### Groups\n%s", contacts.String(), groups.String())
}
const cmdOpenHelp = `open <_group JID_> - Open a group chat portal.`
func (handler *CommandHandler) CommandOpen(ce *CommandEvent) {
if len(ce.Args) == 0 {
ce.Reply("**Usage:** `open <group JID>`")
return
}
user := ce.User
jid := ce.Args[0]
if strings.HasSuffix(jid, whatsappExt.NewUserSuffix) {
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ce.Reply("That looks like a user JID. Did you mean `pm %s`?", jid[:len(jid)-len(whatsappExt.NewUserSuffix)])
return
}
contact, ok := user.Conn.Store.Contacts[jid]
if !ok {
ce.Reply("Group JID not found in contacts. Try syncing contacts with `sync` first.")
return
}
handler.log.Debugln("Importing", jid, "for", user)
portal := user.bridge.GetPortalByJID(database.GroupPortalKey(jid))
if len(portal.MXID) > 0 {
portal.Sync(user, contact)
ce.Reply("Portal room synced.")
} else {
portal.Sync(user, contact)
ce.Reply("Portal room created.")
}
}
const cmdPMHelp = `pm [--force] <_international phone number_> - Open a private chat with the given phone number.`
func (handler *CommandHandler) CommandPM(ce *CommandEvent) {
if len(ce.Args) == 0 {
ce.Reply("**Usage:** `pm [--force] <international phone number>`")
return
}
force := ce.Args[0] == "--force"
if force {
ce.Args = ce.Args[1:]
}
user := ce.User
number := strings.Join(ce.Args, "")
if number[0] == '+' {
number = number[1:]
}
for _, char := range number {
if char < '0' || char > '9' {
ce.Reply("Invalid phone number.")
return
}
}
jid := number + whatsappExt.NewUserSuffix
handler.log.Debugln("Importing", jid, "for", user)
contact, ok := user.Conn.Store.Contacts[jid]
if !ok {
if !force {
ce.Reply("Phone number not found in contacts. Try syncing contacts with `sync` first. " +
"To create a portal anyway, use `pm --force <number>`.")
return
}
contact = whatsapp.Contact{Jid: jid}
}
puppet := user.bridge.GetPuppetByJID(contact.Jid)
puppet.Sync(user, contact)
portal := user.bridge.GetPortalByJID(database.NewPortalKey(contact.Jid, user.JID))
if len(portal.MXID) > 0 {
_, err := portal.MainIntent().InviteUser(portal.MXID, &mautrix.ReqInviteUser{UserID: user.MXID})
if err != nil {
fmt.Println(err)
} else {
ce.Reply("Existing portal room found, invited you to it.")
}
return
}
err := portal.CreateMatrixRoom(user)
if err != nil {
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ce.Reply("Failed to create portal room: %v", err)
return
}
ce.Reply("Created portal room and invited you to it.")
}