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.idea
.vscode
*.db
*.yaml
!example-config.yaml
plugins/
# Bots under maubot.xyz
jesaribot/
sed/
github/
gitlab/
rss/

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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
of this license document, but changing it is not allowed.
Preamble
The GNU Affero General Public License is a free, copyleft license for
software and other kinds of works, specifically designed to ensure
cooperation with the community in the case of network server software.
The licenses for most software and other practical works are designed
to take away your freedom to share and change the works. By contrast,
our General Public Licenses are intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users.
When we speak of free software, we are referring to freedom, not
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have the freedom to distribute copies of free software (and charge for
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Developers that use our General Public Licenses protect your rights
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A secondary benefit of defending all users' freedom is that
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receive widespread use, become available for other developers to
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software used on network servers, this result may fail to come about.
The GNU General Public License permits making a modified version and
letting the public access it on a server without ever releasing its
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The GNU Affero General Public License is designed specifically to
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apply only to part of the Program, that part may be used separately
under those permissions, but the entire Program remains governed by
this License without regard to the additional permissions.
When you convey a copy of a covered work, you may at your option
remove any additional permissions from that copy, or from any part of
it. (Additional permissions may be written to require their own
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for which you have or can give appropriate copyright permission.
Notwithstanding any other provision of this License, for material you
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a) Disclaiming warranty or limiting liability differently from the
terms of sections 15 and 16 of this License; or
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author attributions in that material or in the Appropriate Legal
Notices displayed by works containing it; or
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All other non-permissive additional terms are considered "further
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received it, or any part of it, contains a notice stating that it is
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must place, in the relevant source files, a statement of the
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where to find the applicable terms.
Additional terms, permissive or non-permissive, may be stated in the
form of a separately written license, or stated as exceptions;
the above requirements apply either way.
8. Termination.
You may not propagate or modify a covered work except as expressly
provided under this License. Any attempt otherwise to propagate or
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this License (including any patent licenses granted under the third
paragraph of section 11).
However, if you cease all violation of this License, then your
license from a particular copyright holder is reinstated (a)
provisionally, unless and until the copyright holder explicitly and
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holder fails to notify you of the violation by some reasonable means
prior to 60 days after the cessation.
Moreover, your license from a particular copyright holder is
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violation by some reasonable means, this is the first time you have
received notice of violation of this License (for any work) from that
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your receipt of the notice.
Termination of your rights under this section does not terminate the
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reinstated, you do not qualify to receive new licenses for the same
material under section 10.
9. Acceptance Not Required for Having Copies.
You are not required to accept this License in order to receive or
run a copy of the Program. Ancillary propagation of a covered work
occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance. However,
nothing other than this License grants you permission to propagate or
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10. Automatic Licensing of Downstream Recipients.
Each time you convey a covered work, the recipient automatically
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propagate that work, subject to this License. You are not responsible
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organization, or substantially all assets of one, or subdividing an
organization, or merging organizations. If propagation of a covered
work results from an entity transaction, each party to that
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give under the previous paragraph, plus a right to possession of the
Corresponding Source of the work from the predecessor in interest, if
the predecessor has it or can get it with reasonable efforts.
You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License. For example, you may
not impose a license fee, royalty, or other charge for exercise of
rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.
11. Patents.
A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based. The
work thus licensed is called the contributor's "contributor version".
A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
by this License, of making, using, or selling its contributor version,
but do not include claims that would be infringed only as a
consequence of further modification of the contributor version. For
purposes of this definition, "control" includes the right to grant
patent sublicenses in a manner consistent with the requirements of
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Each contributor grants you a non-exclusive, worldwide, royalty-free
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In the following three paragraphs, a "patent license" is any express
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(such as an express permission to practice a patent or covenant not to
sue for patent infringement). To "grant" such a patent license to a
party means to make such an agreement or commitment not to enforce a
patent against the party.
If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means,
then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients. "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.
If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
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you grant is automatically extended to all recipients of the covered
work and works based on it.
A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License. You may not convey a covered
work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
the work, and under which the third party grants, to any of the
parties who would receive the covered work from you, a discriminatory
patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Remote Network Interaction; Use with the GNU General Public License.
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
supports such interaction) an opportunity to receive the Corresponding
Source of your version by providing access to the Corresponding Source
from a network server at no charge, through some standard or customary
means of facilitating copying of software. This Corresponding Source
shall include the Corresponding Source for any work covered by version 3
of the GNU General Public License that is incorporated pursuant to the
following paragraph.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the work with which it is combined will remain governed by version
3 of the GNU General Public License.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU Affero General Public License from time to time. Such new versions
will be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU Affero General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU Affero General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU Affero General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
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
network, you should also make sure that it provides a way for users to
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)

68
cmd/maubot/main.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 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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config/config.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 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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config/logging.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 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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database/clients.go Normal file
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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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database/database.go Normal file
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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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database/plugins.go Normal file
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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

59
http.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 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)
}
}

54
matrix.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 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
}

229
matrix/htmltotext.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 (
"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()
}
}