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.idea
.vscode
*.db
*.yaml
!example-config.yaml
plugins/
# Bots under maubot.xyz
jesaribot/
sed/
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GNU AFFERO GENERAL PUBLIC LICENSE
Version 3, 19 November 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
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Preamble
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Notwithstanding any other provision of this License, if you modify the
Program, your modified version must prominently offer all users
interacting with it remotely through a computer network (if your version
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Notwithstanding any other provision of this License, you have
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If the Program specifies that a proxy can decide which future
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THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
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If the disclaimer of warranty and limitation of liability provided
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
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/>.
Also add information on how to contact you by electronic and paper mail.
If your software can interact with users remotely through a computer
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get its source. For example, if your program is a web application, its
interface could display a "Source" link that leads users to an archive
of the code. There are many ways you could offer source, and different
solutions will be better for different programs; see section 13 for the
specific requirements.
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU AGPL, see
<https://www.gnu.org/licenses/>.

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# maubot
A plugin-based [Matrix](https://matrix.org) bot system written in Go.
Work in progress. Please come back later.
## Discussion
Matrix room: [#maubot:maunium.net](https://matrix.to/#/#maubot:maunium.net)

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// maubot - A plugin-based Matrix bot system written in Go.
// Copyright (C) 2018 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"
"os"
"os/signal"
"syscall"
"maubot.xyz"
"maubot.xyz/config"
flag "maunium.net/go/mauflag"
log "maunium.net/go/maulogger"
)
func main() {
flag.SetHelpTitles("maubot - A plugin-based Matrix bot system written in Go.", "maubot [-c /path/to/config] [-h]")
configPath := flag.MakeFull("c", "config", "The path to the main config file", "maubot.yaml").String()
wantHelp, _ := flag.MakeHelpFlag()
err := flag.Parse()
if err != nil {
fmt.Println(err)
flag.PrintHelp()
os.Exit(1)
}
if *wantHelp {
flag.PrintHelp()
return
}
cfg := &config.MainConfig{}
err = cfg.Load(*configPath)
if err != nil {
fmt.Println("Failed to load config:", err)
return
}
cfg.Logging.Configure(log.DefaultLogger)
log.Debugln("Logger configured")
bot := maubot.New(cfg)
bot.Init()
bot.Start()
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt, syscall.SIGTERM)
<-c
log.Debugln("Interrupt received, stopping components...")
bot.Stop()
log.Debugln("Components stopped, bye!")
os.Exit(0)
}

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// maubot - A plugin-based Matrix bot system written in Go.
// Copyright (C) 2018 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 config
import (
"io/ioutil"
"gopkg.in/yaml.v2"
"maubot.xyz/database"
)
type MainConfig struct {
Logging LogConfig `yaml:"logging"`
Database database.Database `yaml:"database"`
Server ServerConfig `yaml:"server"`
PluginDirs []string `yaml:"plugin_directories"`
}
func (config *MainConfig) Load(path string) error {
data, err := ioutil.ReadFile(path)
if err != nil {
return err
}
return yaml.Unmarshal(data, config)
}
func (config *MainConfig) Save(path string) error {
data, err := yaml.Marshal(config)
if err != nil {
return err
}
return ioutil.WriteFile(path, data, 0644)
}
type ServerConfig struct {
Listen string `yaml:"listen"`
BasePath string `yaml:"base_path"`
}

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// maubot - A plugin-based Matrix bot system written in Go.
// Copyright (C) 2018 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 config
import (
"maunium.net/go/maulogger"
"os"
"fmt"
)
// LogConfig contains configs for the logger.
type LogConfig struct {
Directory string `yaml:"directory"`
FileNameFormat string `yaml:"file_name_format"`
FileDateFormat string `yaml:"file_date_format"`
FileMode uint32 `yaml:"file_mode"`
TimestampFormat string `yaml:"timestamp_format"`
Debug bool `yaml:"print_debug"`
}
// CreateLogConfig creates a basic LogConfig.
func CreateLogConfig() LogConfig {
return LogConfig{
Directory: "./logs",
FileNameFormat: "%[1]s-%02[2]d.log",
TimestampFormat: "Jan _2, 2006 15:04:05",
FileMode: 0600,
FileDateFormat: "2006-01-02",
Debug: false,
}
}
// GetFileFormat returns a mauLogger-compatible logger file format based on the data in the struct.
func (lc LogConfig) GetFileFormat() maulogger.LoggerFileFormat {
path := lc.FileNameFormat
if len(lc.Directory) > 0 {
path = lc.Directory + "/" + path
}
return func(now string, i int) string {
return fmt.Sprintf(path, now, i)
}
}
// Configure configures a mauLogger instance with the data in this struct.
func (lc LogConfig) Configure(log *maulogger.Logger) {
log.FileFormat = lc.GetFileFormat()
log.FileMode = os.FileMode(lc.FileMode)
log.FileTimeFormat = lc.FileDateFormat
log.TimeFormat = lc.TimestampFormat
if lc.Debug {
log.PrintLevel = maulogger.LevelDebug.Severity
}
}

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// jesaribot - A simple maubot plugin.
// Copyright (C) 2018 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 database
import (
log "maunium.net/go/maulogger"
"database/sql"
)
type MatrixClient struct {
db *Database
sql *sql.DB
UserID string `json:"user_id"`
Homeserver string `json:"homeserver"`
AccessToken string `json:"access_token"`
NextBatch string `json:"next_batch"`
FilterID string `json:"filter_id"`
Sync bool `json:"sync"`
AutoJoinRooms bool `json:"auto_join_rooms"`
DisplayName string `json:"display_name"`
AvatarURL string `json:"avatar_url"`
}
type MatrixClientStatic struct {
db *Database
sql *sql.DB
}
func (mcs *MatrixClientStatic) CreateTable() error {
_, err := mcs.sql.Exec(`CREATE TABLE IF NOT EXISTS matrix_client (
user_id VARCHAR(255) PRIMARY KEY,
homeserver VARCHAR(255) NOT NULL,
access_token VARCHAR(255) NOT NULL,
next_batch VARCHAR(255) NOT NULL,
filter_id VARCHAR(255) NOT NULL,
sync BOOLEAN NOT NULL,
autojoin BOOLEAN NOT NULL,
display_name VARCHAR(255) NOT NULL,
avatar_url VARCHAR(255) NOT NULL
)`)
return err
}
func (mcs *MatrixClientStatic) Get(userID string) *MatrixClient {
row := mcs.sql.QueryRow("SELECT user_id, homeserver, access_token, next_batch, filter_id, sync, autojoin, display_name, avatar_url FROM matrix_client WHERE user_id=?", userID)
if row != nil {
return mcs.New().Scan(row)
}
return nil
}
func (mcs *MatrixClientStatic) GetAll() (clients []*MatrixClient) {
rows, err := mcs.sql.Query("SELECT user_id, homeserver, access_token, next_batch, filter_id, sync, autojoin, display_name, avatar_url FROM matrix_client")
if err != nil || rows == nil {
return nil
}
defer rows.Close()
for rows.Next() {
clients = append(clients, mcs.New().Scan(rows))
}
return
}
func (mcs *MatrixClientStatic) New() *MatrixClient {
return &MatrixClient{
db: mcs.db,
sql: mcs.sql,
}
}
type Scannable interface {
Scan(...interface{}) error
}
func (mxc *MatrixClient) Scan(row Scannable) *MatrixClient {
err := row.Scan(&mxc.UserID, &mxc.Homeserver, &mxc.AccessToken, &mxc.NextBatch, &mxc.FilterID, &mxc.Sync, &mxc.AutoJoinRooms, &mxc.DisplayName, &mxc.AvatarURL)
if err != nil {
log.Fatalln("Database scan failed:", err)
}
return mxc
}
func (mxc *MatrixClient) Insert() error {
_, err := mxc.sql.Exec("INSERT INTO matrix_client (user_id, homeserver, access_token, next_batch, filter_id, sync, autojoin, display_name, avatar_url) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)",
mxc.UserID, mxc.Homeserver, mxc.AccessToken, mxc.NextBatch, mxc.FilterID, mxc.Sync, mxc.AutoJoinRooms, mxc.DisplayName, mxc.AvatarURL)
return err
}
func (mxc *MatrixClient) Update() error {
_, err := mxc.sql.Exec("UPDATE matrix_client SET access_token=?, next_batch=?, filter_id=?, sync=?, autojoin=?, display_name=?, avatar_url=? WHERE user_id=?",
mxc.AccessToken, mxc.NextBatch, mxc.FilterID, mxc.Sync, mxc.AutoJoinRooms, mxc.DisplayName, mxc.AvatarURL, mxc.UserID)
return err
}

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// jesaribot - A simple maubot plugin.
// Copyright (C) 2018 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 database
import (
"database/sql"
_ "github.com/mattn/go-sqlite3"
log "maunium.net/go/maulogger"
)
type Database struct {
Type string `yaml:"type"`
Name string `yaml:"name"`
MatrixClient *MatrixClientStatic `yaml:"-"`
Plugin *PluginStatic `yaml:"-"`
sql *sql.DB
}
func (db *Database) Connect() (err error) {
db.sql, err = sql.Open(db.Type, db.Name)
if err != nil {
return
}
db.MatrixClient = &MatrixClientStatic{db: db, sql: db.sql}
db.Plugin = &PluginStatic{db: db, sql: db.sql}
return nil
}
func (db *Database) CreateTables() {
log.Debugln("Creating database tables")
err := db.MatrixClient.CreateTable()
if err != nil {
log.Errorln("Failed to create matrix_client table:", err)
}
err = db.Plugin.CreateTable()
if err != nil {
log.Errorln("Failed to create plugin table:", err)
}
}
func (db *Database) SQL() *sql.DB {
return db.sql
}

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// jesaribot - A simple maubot plugin.
// Copyright (C) 2018 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 database
import (
"database/sql"
log "maunium.net/go/maulogger"
)
type Plugin struct {
db *Database
sql *sql.DB
ID string `json:"id"`
Type string `json:"type"`
Enabled bool `json:"enabled"`
UserID string `json:"user_id"`
//User *MatrixClient `json:"-"`
}
type PluginStatic struct {
db *Database
sql *sql.DB
}
func (ps *PluginStatic) CreateTable() error {
_, err := ps.sql.Exec(`CREATE TABLE IF NOT EXISTS plugin (
id VARCHAR(255) PRIMARY KEY,
type VARCHAR(255) NOT NULL,
enabled BOOLEAN NOT NULL,
user_id VARCHAR(255) NOT NULL,
FOREIGN KEY (user_id) REFERENCES matrix_client(user_id)
ON DELETE RESTRICT ON UPDATE CASCADE
)`)
return err
}
func (ps *PluginStatic) Get(id string) *Plugin {
row := ps.sql.QueryRow("SELECT * FROM plugin WHERE id=?", id)
if row != nil {
return ps.New().Scan(row)
}
return nil
}
func (ps *PluginStatic) GetAll() (plugins []*Plugin) {
rows, err := ps.sql.Query("SELECT * FROM plugin")
if err != nil || rows == nil {
return nil
}
defer rows.Close()
for rows.Next() {
plugins = append(plugins, ps.New().Scan(rows))
}
return
}
func (ps *PluginStatic) New() *Plugin {
return &Plugin{
db: ps.db,
sql: ps.sql,
}
}
/*func (p *Plugin) LoadUser() *Plugin {
p.User = p.db.MatrixClient.Get(p.UserID)
return p
}*/
func (p *Plugin) Scan(row Scannable) *Plugin {
err := row.Scan(&p.ID, &p.Type, &p.Enabled, &p.UserID)
if err != nil {
log.Fatalln("Database scan failed:", err)
}
return p
}
func (p *Plugin) Insert() error {
_, err := p.sql.Exec("INSERT INTO plugin (id, type, enabled, user_id) VALUES (?, ?, ?, ?)",
p.ID, p.Type, p.Enabled, p.UserID)
return err
}
func (p *Plugin) Update() error {
_, err := p.sql.Exec("UPDATE plugin SET enabled=? WHERE id=?",
p.Enabled, p.ID)
return err
}

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example-config.yaml Normal file
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database:
type: sqlite3
name: maubot.db
logging:
directory: ./logs
file_mode: 0600
print_debug: false
file_name_format: "%[1]s-%02[2]d.log"
file_date_format: 2006-01-02
timestamp_format: Jan _2, 2006 15:04:05
# If multiple directories have a plugin with the same name, the first directory is used.
plugin_directories:
- ./plugins
server:
listen: 0.0.0.0:29316
base_path: /_matrix/maubot

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// maubot - A plugin-based Matrix bot system written in Go.
// Copyright (C) 2018 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 maubot
import (
"context"
"net/http"
"os"
"time"
"github.com/gorilla/mux"
log "maunium.net/go/maulogger"
)
func (bot *Bot) initServer() {
log.Debugln("Initializing HTTP server")
r := mux.NewRouter()
http.Handle(bot.Config.Server.BasePath, r)
bot.Server = &http.Server{
Addr: bot.Config.Server.Listen,
WriteTimeout: time.Second * 15,
ReadTimeout: time.Second * 15,
IdleTimeout: time.Second * 60,
Handler: r,
}
}
func (bot *Bot) startServer() {
log.Debugf("Listening at http://%s%s\n", bot.Server.Addr, bot.Config.Server.BasePath)
if err := bot.Server.ListenAndServe(); err != nil {
log.Fatalln("HTTP server errored:", err)
bot.Server = nil
bot.Stop()
os.Exit(10)
}
}
func (bot *Bot) stopServer() {
if bot.Server != nil {
log.Debugln("Stopping HTTP server")
ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
defer cancel()
bot.Server.Shutdown(ctx)
}
}

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// maubot - A plugin-based Matrix bot system written in Go.
// Copyright (C) 2018 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 maubot
import (
"os"
"maubot.xyz/matrix"
log "maunium.net/go/maulogger"
)
func (bot *Bot) initClients() {
log.Debugln("Initializing Matrix clients")
clients := bot.Database.MatrixClient.GetAll()
for _, client := range clients {
mxClient, err := matrix.NewClient(client)
if err != nil {
log.Fatalf("Failed to create client to %s as %s: %v\n", client.Homeserver, client.UserID, err)
os.Exit(3)
}
log.Debugln("Initialized user", client.UserID, "with homeserver", client.Homeserver)
bot.Clients[client.UserID] = mxClient
}
}
func (bot *Bot) startClients() {
log.Debugln("Starting Matrix syncer")
for _, client := range bot.Clients {
if client.DB.Sync {
client.Sync()
}
}
}
func (bot *Bot) stopClients() {
log.Debugln("Stopping Matrix syncers")
for _, client := range bot.Clients {
client.StopSync()
}
}

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matrix/event.go Normal file
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// maubot - A plugin-based Matrix bot system written in Go.
// Copyright (C) 2018 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 matrix
import (
"maunium.net/go/gomatrix"
)
type Event struct {
*gomatrix.Event
Client *Client
}
func (evt *Event) Reply(text string) (string, error) {
return evt.SendEvent(
SetReply(
RenderMarkdown(text),
evt.Event))
}
func (evt *Event) SendMessage(text string) (string, error) {
return evt.SendEvent(RenderMarkdown(text))
}
func (evt *Event) SendEvent(content map[string]interface{}) (string, error) {
resp, err := evt.Client.SendMessageEvent(evt.RoomID, "m.room.message", content)
if err != nil {
return "", err
}
return resp.EventID, nil
}

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// maubot - A plugin-based Matrix bot system written in Go.
// Copyright (C) 2018 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 matrix
import (
"fmt"
"math"
"regexp"
"strings"
"golang.org/x/net/html"
"strconv"
)
var matrixToURL = regexp.MustCompile("^(?:https?://)?(?:www\\.)?matrix\\.to/#/([#@!].*)")
type htmlParser struct {}
type taggedString struct {
string
tag string
}
func (parser *htmlParser) getAttribute(node *html.Node, attribute string) string {
for _, attr := range node.Attr {
if attr.Key == attribute {
return attr.Val
}
}
return ""
}
func digits(num int) int {
return int(math.Floor(math.Log10(float64(num))) + 1)
}
func (parser *htmlParser) listToString(node *html.Node, stripLinebreak bool) string {
ordered := node.Data == "ol"
taggedChildren := parser.nodeToTaggedStrings(node.FirstChild, stripLinebreak)
counter := 1
indentLength := 0
if ordered {
start := parser.getAttribute(node, "start")
if len(start) > 0 {
counter, _ = strconv.Atoi(start)
}
longestIndex := (counter - 1) + len(taggedChildren)
indentLength = digits(longestIndex)
}
indent := strings.Repeat(" ", indentLength+2)
var children []string
for _, child := range taggedChildren {
if child.tag != "li" {
continue
}
var prefix string
if ordered {
indexPadding := indentLength - digits(counter)
prefix = fmt.Sprintf("%d. %s", counter, strings.Repeat(" ", indexPadding))
} else {
prefix = "● "
}
str := prefix + child.string
counter++
parts := strings.Split(str, "\n")
for i, part := range parts[1:] {
parts[i+1] = indent + part
}
str = strings.Join(parts, "\n")
children = append(children, str)
}
return strings.Join(children, "\n")
}
func (parser *htmlParser) basicFormatToString(node *html.Node, stripLinebreak bool) string {
str := parser.nodeToTagAwareString(node.FirstChild, stripLinebreak)
switch node.Data {
case "b", "strong":
return fmt.Sprintf("**%s**", str)
case "i", "em":
return fmt.Sprintf("_%s_", str)
case "s", "del":
return fmt.Sprintf("~~%s~~", str)
}
return str
}
func (parser *htmlParser) headerToString(node *html.Node, stripLinebreak bool) string {
children := parser.nodeToStrings(node.FirstChild, stripLinebreak)
length := int(node.Data[1] - '0')
prefix := strings.Repeat("#", length) + " "
return prefix + strings.Join(children, "")
}
func (parser *htmlParser) blockquoteToString(node *html.Node, stripLinebreak bool) string {
str := parser.nodeToTagAwareString(node.FirstChild, stripLinebreak)
childrenArr := strings.Split(strings.TrimSpace(str), "\n")
for index, child := range childrenArr {
childrenArr[index] = "> " + child
}
return strings.Join(childrenArr, "\n")
}
func (parser *htmlParser) linkToString(node *html.Node, stripLinebreak bool) string {
str := parser.nodeToTagAwareString(node.FirstChild, stripLinebreak)
href := parser.getAttribute(node, "href")
if len(href) == 0 {
return str
}
match := matrixToURL.FindStringSubmatch(href)
if len(match) == 2 {
// pillTarget := match[1]
// if pillTarget[0] == '@' {
// if member := parser.room.GetMember(pillTarget); member != nil {
// return member.DisplayName
// }
// }
// return pillTarget
return str
}
return fmt.Sprintf("%s (%s)", str, href)
}
func (parser *htmlParser) tagToString(node *html.Node, stripLinebreak bool) string {
switch node.Data {
case "blockquote":
return parser.blockquoteToString(node, stripLinebreak)
case "ol", "ul":
return parser.listToString(node, stripLinebreak)
case "h1", "h2", "h3", "h4", "h5", "h6":
return parser.headerToString(node, stripLinebreak)
case "br":
return "\n"
case "b", "strong", "i", "em", "s", "del", "u", "ins":
return parser.basicFormatToString(node, stripLinebreak)
case "a":
return parser.linkToString(node, stripLinebreak)
case "p":
return parser.nodeToTagAwareString(node.FirstChild, stripLinebreak) + "\n"
case "pre":
return parser.nodeToString(node.FirstChild, false)
default:
return parser.nodeToTagAwareString(node.FirstChild, stripLinebreak)
}
}
func (parser *htmlParser) singleNodeToString(node *html.Node, stripLinebreak bool) taggedString {
switch node.Type {
case html.TextNode:
if stripLinebreak {
node.Data = strings.Replace(node.Data, "\n", "", -1)
}
return taggedString{node.Data, "text"}
case html.ElementNode:
return taggedString{parser.tagToString(node, stripLinebreak), node.Data}
case html.DocumentNode:
return taggedString{parser.nodeToTagAwareString(node.FirstChild, stripLinebreak), "html"}
default:
return taggedString{"", "unknown"}
}
}
func (parser *htmlParser) nodeToTaggedStrings(node *html.Node, stripLinebreak bool) (strs []taggedString) {
for ; node != nil; node = node.NextSibling {
strs = append(strs, parser.singleNodeToString(node, stripLinebreak))
}
return
}
var BlockTags = []string{"p", "h1", "h2", "h3", "h4", "h5", "h6", "ol", "ul", "pre", "blockquote", "div", "hr", "table"}
func (parser *htmlParser) isBlockTag(tag string) bool {
for _, blockTag := range BlockTags {
if tag == blockTag {
return true
}
}
return false
}
func (parser *htmlParser) nodeToTagAwareString(node *html.Node, stripLinebreak bool) string {
strs := parser.nodeToTaggedStrings(node, stripLinebreak)
var output strings.Builder
for _, str := range strs {
tstr := str.string
if parser.isBlockTag(str.tag) {
tstr = fmt.Sprintf("\n%s\n", tstr)
}
output.WriteString(tstr)
}
return strings.TrimSpace(output.String())
}
func (parser *htmlParser) nodeToStrings(node *html.Node, stripLinebreak bool) (strs []string) {
for ; node != nil; node = node.NextSibling {
strs = append(strs, parser.singleNodeToString(node, stripLinebreak).string)
}
return
}
func (parser *htmlParser) nodeToString(node *html.Node, stripLinebreak bool) string {
return strings.Join(parser.nodeToStrings(node, stripLinebreak), "")
}
func (parser *htmlParser) Parse(htmlData string) string {
node, _ := html.Parse(strings.NewReader(htmlData))
return parser.nodeToTagAwareString(node, true)
}
func HTMLToText(html string) string {
html = strings.Replace(html, "\t", " ", -1)
str := (&htmlParser{}).Parse(html)
return str
}

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// maubot - A plugin-based Matrix bot system written in Go.
// Copyright (C) 2018 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 matrix
import (
"strings"
"gopkg.in/russross/blackfriday.v2"
)
func RenderMarkdown(text string) map[string]interface{} {
parser := blackfriday.New(
blackfriday.WithExtensions(blackfriday.NoIntraEmphasis |
blackfriday.Tables |
blackfriday.FencedCode |
blackfriday.Strikethrough |
blackfriday.SpaceHeadings |
blackfriday.DefinitionLists))
ast := parser.Parse([]byte(text))
renderer := blackfriday.NewHTMLRenderer(blackfriday.HTMLRendererParameters{
Flags: blackfriday.UseXHTML,
})
var buf strings.Builder
renderer.RenderHeader(&buf, ast)
ast.Walk(func(node *blackfriday.Node, entering bool) blackfriday.WalkStatus {
return renderer.RenderNode(&buf, node, entering)
})
renderer.RenderFooter(&buf, ast)
htmlBody := buf.String()
return map[string]interface{}{
"formatted_body": htmlBody,
"format": "org.matrix.custom.html",
"msgtype": "m.text",
"body": HTMLToText(htmlBody),
}
}

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// maubot - A plugin-based Matrix bot system written in Go.
// Copyright (C) 2018 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 matrix
import (
"maubot.xyz/database"
"maunium.net/go/gomatrix"
log "maunium.net/go/maulogger"
)
type Client struct {
*gomatrix.Client
DB *database.MatrixClient
}
func NewClient(db *database.MatrixClient) (*Client, error) {
mxClient, err := gomatrix.NewClient(db.Homeserver, db.UserID, db.AccessToken)
if err != nil {
return nil, err
}
client := &Client{
Client: mxClient,
DB: db,
}
client.AddEventHandler(gomatrix.StateMember, client.onJoin)
return client, nil
}
func (client *Client) AddEventHandler(evt string, handler gomatrix.OnEventListener) {
client.Syncer.(*gomatrix.DefaultSyncer).OnEventType(evt, handler)
}
func (client *Client) onJoin(evt *gomatrix.Event) {
if !client.DB.AutoJoinRooms || evt.StateKey == nil || *evt.StateKey != client.DB.UserID {
return
}
if membership, _ := evt.Content["membership"].(string); membership == "invite" {
client.JoinRoom(evt.RoomID)
}
}
func (client *Client) JoinRoom(roomID string) {
client.Client.JoinRoom(roomID, "", nil)
}
func (client *Client) Sync() {
go func() {
err := client.Client.Sync()
if err != nil {
log.Errorln("Sync() in client", client.UserID, "errored:", err)
}
}()
}

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// maubot - A plugin-based Matrix bot system written in Go.
// Copyright (C) 2018 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 matrix
import (
"regexp"
"strings"
"fmt"
"maunium.net/go/gomatrix"
"golang.org/x/net/html"
)
var HTMLReplyFallbackRegex = regexp.MustCompile(`^<mx-reply>[\s\S]+?</mx-reply>`)
func TrimReplyFallbackHTML(html string) string {
return HTMLReplyFallbackRegex.ReplaceAllString(html, "")
}
func TrimReplyFallbackText(text string) string {
if !strings.HasPrefix(text, "> ") || !strings.Contains(text, "\n") {
return text
}
lines := strings.Split(text, "\n")
for len(lines) > 0 && strings.HasPrefix(lines[0], "> ") {
lines = lines[1:]
}
return strings.Join(lines, "\n")
}
func RemoveReplyFallback(evt *gomatrix.Event) {
if format, ok := evt.Content["format"].(string); ok && format == "org.matrix.custom.html" {
htmlBody, _ := evt.Content["formatted_body"].(string)
evt.Content["formatted_body"] = TrimReplyFallbackHTML(htmlBody)
}
plainBody, _ := evt.Content["body"].(string)
evt.Content["body"] = TrimReplyFallbackText(plainBody)
}
const ReplyFormat = `<mx-reply><blockquote>
<a href="https://matrix.to/#/%s/%s">In reply to</a>
<a href="https://matrix.to/#/%s">%s</a>
%s
</blockquote></mx-reply>
`
func ReplyFallbackHTML(evt *gomatrix.Event) string {
body, ok := evt.Content["formatted_body"].(string)
if !ok {
body, _ = evt.Content["body"].(string)
body = html.EscapeString(body)
}
senderDisplayName := evt.Sender
return fmt.Sprintf(ReplyFormat, evt.RoomID, evt.ID, evt.Sender, senderDisplayName, body)
}
func ReplyFallbackText(evt *gomatrix.Event) string {
body, _ := evt.Content["body"].(string)
lines := strings.Split(strings.TrimSpace(body), "\n")
firstLine, lines := lines[0], lines[1:]
senderDisplayName := evt.Sender
var fallbackText strings.Builder
fmt.Fprintf(&fallbackText, "> <%s> %s", senderDisplayName, firstLine)
for _, line := range lines {
fmt.Fprintf(&fallbackText, "\n> %s", line)
}
fallbackText.WriteString("\n\n")
return fallbackText.String()
}
func SetReply(content map[string]interface{}, inReplyTo *gomatrix.Event) map[string]interface{} {
content["m.relates_to"] = map[string]interface{}{
"m.in_reply_to": map[string]interface{}{
"event_id": inReplyTo.ID,
"room_id": inReplyTo.RoomID,
},
}
body, _ := content["body"].(string)
content["body"] = ReplyFallbackText(inReplyTo) + body
htmlBody, ok := content["formatted_body"].(string)
if !ok {
htmlBody = html.EscapeString(body)
content["format"] = "org.matrix.custom.html"
}
content["formatted_body"] = ReplyFallbackHTML(inReplyTo) + htmlBody
return content
}

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// maubot - A plugin-based Matrix bot system written in Go.
// Copyright (C) 2018 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 maubot
import (
"net/http"
"os"
"maubot.xyz/config"
"maubot.xyz/database"
"maubot.xyz/matrix"
log "maunium.net/go/maulogger"
)
type Bot struct {
Config *config.MainConfig
Database *database.Database
Clients map[string]*matrix.Client
PluginCreators map[string]*PluginCreator
Plugins map[string]*PluginWrapper
Server *http.Server
}
func New(config *config.MainConfig) *Bot {
return &Bot{
Config: config,
Clients: make(map[string]*matrix.Client),
Plugins: make(map[string]*PluginWrapper),
PluginCreators: make(map[string]*PluginCreator),
}
}
func (bot *Bot) Init() {
bot.initDatabase()
bot.initClients()
bot.initServer()
bot.loadPlugins()
bot.createPlugins()
log.Debugln("Init func exit")
}
func (bot *Bot) Start() {
go bot.startClients()
go bot.startServer()
bot.startPlugins()
log.Debugln("Start func exit")
}
func (bot *Bot) Stop() {
bot.stopPlugins()
bot.stopServer()
bot.stopClients()
log.Debugln("Stop func exit")
}
func (bot *Bot) initDatabase() {
log.Debugln("Initializing database")
bot.Database = &bot.Config.Database
err := bot.Database.Connect()
if err != nil {
log.Fatalln("Failed to connect to database:", err)
os.Exit(2)
}
bot.Database.CreateTables()
}

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// maubot - A plugin-based Matrix bot system written in Go.
// Copyright (C) 2018 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 maubot
import (
"fmt"
"plugin"
"maubot.xyz/database"
"maubot.xyz/matrix"
)
type Plugin interface {
Start()
Stop()
}
type PluginWrapper struct {
Plugin
Creator *PluginCreator
DB *database.Plugin
}
type PluginCreatorFunc func(bot *Bot, info *database.Plugin, client *matrix.Client) Plugin
type PluginCreator struct {
Create PluginCreatorFunc
Name string
Version string
Path string
}
func LoadPlugin(path string) (*PluginCreator, error) {
rawPlugin, err := plugin.Open(path)
if err != nil {
return nil, fmt.Errorf("failed to open: %v", err)
}
pluginCreatorSymbol, err := rawPlugin.Lookup("Plugin")
if err == nil {
pluginCreator, ok := pluginCreatorSymbol.(*PluginCreator)
if ok {
pluginCreator.Path = path
return pluginCreator, nil
}
}
pluginCreatorFuncSymbol, err := rawPlugin.Lookup("Create")
if err != nil {
return nil, fmt.Errorf("symbol \"Create\" not found: %v", err)
}
pluginCreatorFunc, ok := pluginCreatorFuncSymbol.(PluginCreatorFunc)
if !ok {
return nil, fmt.Errorf("symbol \"Create\" does not implement maubot.PluginCreator")
}
nameSymbol, err := rawPlugin.Lookup("Name")
if err != nil {
return nil, fmt.Errorf("symbol \"Name\" not found: %v", err)
}
name, ok := nameSymbol.(string)
if !ok {
return nil, fmt.Errorf("symbol \"Name\" is not a string")
}
versionSymbol, err := rawPlugin.Lookup("Version")
if err != nil {
return nil, fmt.Errorf("symbol \"Version\" not found: %v", err)
}
version, ok := versionSymbol.(string)
if !ok {
return nil, fmt.Errorf("symbol \"Version\" is not a string")
}
return &PluginCreator{
Create: pluginCreatorFunc,
Name: name,
Version: version,
Path: path,
}, nil
}

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// maubot - A plugin-based Matrix bot system written in Go.
// Copyright (C) 2018 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 maubot
import (
"io/ioutil"
"os"
"path/filepath"
log "maunium.net/go/maulogger"
)
func (bot *Bot) loadPlugin(dir, fileName string) {
ext := fileName[len(fileName)-4:]
if ext != ".mbp" {
return
}
path := filepath.Join(dir, fileName)
pluginCreator, err := LoadPlugin(path)
if err != nil {
log.Fatalf("Failed to load plugin at %s: %v\n", path, err)
os.Exit(4)
}
_, exists := bot.PluginCreators[pluginCreator.Name]
if exists {
log.Debugf("Skipping plugin at %s: plugin with same name already loaded", path)
return
}
bot.PluginCreators[pluginCreator.Name] = pluginCreator
log.Debugf("Loaded plugin creator %s v%s\n", pluginCreator.Name, pluginCreator.Version)
}
func (bot *Bot) loadPlugins() {
for _, dir := range bot.Config.PluginDirs {
files, err := ioutil.ReadDir(dir)
if err != nil {
log.Fatalf("Failed to read plugin directory %s: %v\n", dir, err)
os.Exit(4)
}
for _, file := range files {
bot.loadPlugin(dir, file.Name())
}
}
}
func (bot *Bot) createPlugins() {
log.Debugln("Creating plugin instances")
plugins := bot.Database.Plugin.GetAll()
for _, plugin := range plugins {
if !plugin.Enabled {
log.Debugln("Skipping disabled plugin", plugin.ID)
continue
}
creator, ok := bot.PluginCreators[plugin.Type]
if !ok {
log.Errorln("Plugin creator", plugin.Type, "for", plugin.ID, "not found, disabling plugin...")
plugin.Enabled = false
plugin.Update()
continue
}
client, ok := bot.Clients[plugin.UserID]
if !ok {
log.Errorln("Client", plugin.UserID, "for", plugin.ID, "not found, disabling plugin...")
plugin.Enabled = false
plugin.Update()
continue
}
log.Debugf("Created plugin %s (type %s v%s)\n", plugin.ID, creator.Name, creator.Version)
bot.Plugins[plugin.ID] = &PluginWrapper{
Plugin: creator.Create(bot, plugin, client),
Creator: creator,
DB: plugin,
}
}
}
func (bot *Bot) startPlugins() {
log.Debugln("Starting plugin instances...")
for _, plugin := range bot.Plugins {
log.Debugf("Starting plugin %s (type %s v%s)\n", plugin.DB.ID, plugin.Creator.Name, plugin.Creator.Version)
go plugin.Start()
}
}
func (bot *Bot) stopPlugins() {
log.Debugln("Stopping plugin instances...")
for _, plugin := range bot.Plugins {
log.Debugf("Stopping plugin %s (type %s v%s)\n", plugin.DB.ID, plugin.Creator.Name, plugin.Creator.Version)
plugin.Stop()
}
}