mautrix-whatsapp/config/bridge.go

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// mautrix-whatsapp - A Matrix-WhatsApp puppeting bridge.
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// Copyright (C) 2020 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 (
"bytes"
"strconv"
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"strings"
"text/template"
"github.com/Rhymen/go-whatsapp"
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"maunium.net/go/mautrix/event"
"maunium.net/go/mautrix/id"
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"maunium.net/go/mautrix-whatsapp/types"
)
type BridgeConfig struct {
UsernameTemplate string `yaml:"username_template"`
DisplaynameTemplate string `yaml:"displayname_template"`
CommunityTemplate string `yaml:"community_template"`
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ConnectionTimeout int `yaml:"connection_timeout"`
FetchMessageOnTimeout bool `yaml:"fetch_message_on_timeout"`
DeliveryReceipts bool `yaml:"delivery_receipts"`
LoginQRRegenCount int `yaml:"login_qr_regen_count"`
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MaxConnectionAttempts int `yaml:"max_connection_attempts"`
ConnectionRetryDelay int `yaml:"connection_retry_delay"`
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ReportConnectionRetry bool `yaml:"report_connection_retry"`
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ChatListWait int `yaml:"chat_list_wait"`
PortalSyncWait int `yaml:"portal_sync_wait"`
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CallNotices struct {
Start bool `yaml:"start"`
End bool `yaml:"end"`
} `yaml:"call_notices"`
InitialChatSync int `yaml:"initial_chat_sync_count"`
InitialHistoryFill int `yaml:"initial_history_fill_count"`
RecoverChatSync int `yaml:"recovery_chat_sync_count"`
RecoverHistory bool `yaml:"recovery_history_backfill"`
SyncChatMaxAge uint64 `yaml:"sync_max_chat_age"`
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SyncWithCustomPuppets bool `yaml:"sync_with_custom_puppets"`
LoginSharedSecret string `yaml:"login_shared_secret"`
InviteOwnPuppetForBackfilling bool `yaml:"invite_own_puppet_for_backfilling"`
PrivateChatPortalMeta bool `yaml:"private_chat_portal_meta"`
AllowUserInvite bool `yaml:"allow_user_invite"`
CommandPrefix string `yaml:"command_prefix"`
Encryption struct {
Allow bool `yaml:"allow"`
Default bool `yaml:"default"`
} `yaml:"encryption"`
Permissions PermissionConfig `yaml:"permissions"`
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Relaybot RelaybotConfig `yaml:"relaybot"`
usernameTemplate *template.Template `yaml:"-"`
displaynameTemplate *template.Template `yaml:"-"`
communityTemplate *template.Template `yaml:"-"`
}
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func (bc *BridgeConfig) setDefaults() {
bc.ConnectionTimeout = 20
bc.FetchMessageOnTimeout = false
bc.DeliveryReceipts = false
bc.LoginQRRegenCount = 2
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bc.MaxConnectionAttempts = 3
bc.ConnectionRetryDelay = -1
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bc.ReportConnectionRetry = true
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bc.ChatListWait = 30
bc.PortalSyncWait = 600
bc.CallNotices.Start = true
bc.CallNotices.End = true
bc.InitialChatSync = 10
bc.InitialHistoryFill = 20
bc.RecoverChatSync = -1
bc.RecoverHistory = true
bc.SyncChatMaxAge = 259200
bc.SyncWithCustomPuppets = true
bc.LoginSharedSecret = ""
bc.InviteOwnPuppetForBackfilling = true
bc.PrivateChatPortalMeta = false
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}
type umBridgeConfig BridgeConfig
func (bc *BridgeConfig) UnmarshalYAML(unmarshal func(interface{}) error) error {
err := unmarshal((*umBridgeConfig)(bc))
if err != nil {
return err
}
bc.usernameTemplate, err = template.New("username").Parse(bc.UsernameTemplate)
if err != nil {
return err
}
bc.displaynameTemplate, err = template.New("displayname").Parse(bc.DisplaynameTemplate)
if err != nil {
return err
}
if len(bc.CommunityTemplate) > 0 {
bc.communityTemplate, err = template.New("community").Parse(bc.CommunityTemplate)
if err != nil {
return err
}
}
return nil
}
type UsernameTemplateArgs struct {
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UserID id.UserID
}
func (bc BridgeConfig) FormatDisplayname(contact whatsapp.Contact) (string, int8) {
var buf bytes.Buffer
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if index := strings.IndexRune(contact.Jid, '@'); index > 0 {
contact.Jid = "+" + contact.Jid[:index]
}
bc.displaynameTemplate.Execute(&buf, contact)
var quality int8
switch {
case len(contact.Notify) > 0:
quality = 3
case len(contact.Name) > 0 || len(contact.Short) > 0:
quality = 2
case len(contact.Jid) > 0:
quality = 1
default:
quality = 0
}
return buf.String(), quality
}
func (bc BridgeConfig) FormatUsername(userID types.WhatsAppID) string {
var buf bytes.Buffer
bc.usernameTemplate.Execute(&buf, userID)
return buf.String()
}
type CommunityTemplateArgs struct {
Localpart string
Server string
}
func (bc BridgeConfig) EnableCommunities() bool {
return bc.communityTemplate != nil
}
func (bc BridgeConfig) FormatCommunity(localpart, server string) string {
var buf bytes.Buffer
bc.communityTemplate.Execute(&buf, CommunityTemplateArgs{localpart, server})
return buf.String()
}
type PermissionConfig map[string]PermissionLevel
type PermissionLevel int
const (
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PermissionLevelDefault PermissionLevel = 0
PermissionLevelRelaybot PermissionLevel = 5
PermissionLevelUser PermissionLevel = 10
PermissionLevelAdmin PermissionLevel = 100
)
func (pc *PermissionConfig) UnmarshalYAML(unmarshal func(interface{}) error) error {
rawPC := make(map[string]string)
err := unmarshal(&rawPC)
if err != nil {
return err
}
if *pc == nil {
*pc = make(map[string]PermissionLevel)
}
for key, value := range rawPC {
switch strings.ToLower(value) {
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case "relaybot":
(*pc)[key] = PermissionLevelRelaybot
case "user":
(*pc)[key] = PermissionLevelUser
case "admin":
(*pc)[key] = PermissionLevelAdmin
default:
val, err := strconv.Atoi(value)
if err != nil {
(*pc)[key] = PermissionLevelDefault
} else {
(*pc)[key] = PermissionLevel(val)
}
}
}
return nil
}
func (pc *PermissionConfig) MarshalYAML() (interface{}, error) {
if *pc == nil {
return nil, nil
}
rawPC := make(map[string]string)
for key, value := range *pc {
switch value {
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case PermissionLevelRelaybot:
rawPC[key] = "relaybot"
case PermissionLevelUser:
rawPC[key] = "user"
case PermissionLevelAdmin:
rawPC[key] = "admin"
default:
rawPC[key] = strconv.Itoa(int(value))
}
}
return rawPC, nil
}
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func (pc PermissionConfig) IsRelaybotWhitelisted(userID id.UserID) bool {
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return pc.GetPermissionLevel(userID) >= PermissionLevelRelaybot
}
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func (pc PermissionConfig) IsWhitelisted(userID id.UserID) bool {
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return pc.GetPermissionLevel(userID) >= PermissionLevelUser
}
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func (pc PermissionConfig) IsAdmin(userID id.UserID) bool {
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return pc.GetPermissionLevel(userID) >= PermissionLevelAdmin
}
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func (pc PermissionConfig) GetPermissionLevel(userID id.UserID) PermissionLevel {
permissions, ok := pc[string(userID)]
if ok {
return permissions
}
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_, homeserver, _ := userID.Parse()
permissions, ok = pc[homeserver]
if len(homeserver) > 0 && ok {
return permissions
}
permissions, ok = pc["*"]
if ok {
return permissions
}
return PermissionLevelDefault
}
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type RelaybotConfig struct {
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Enabled bool `yaml:"enabled"`
ManagementRoom id.RoomID `yaml:"management"`
InviteUsers []id.UserID `yaml:"invites"`
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MessageFormats map[event.MessageType]string `yaml:"message_formats"`
messageTemplates *template.Template `yaml:"-"`
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}
type umRelaybotConfig RelaybotConfig
func (rc *RelaybotConfig) UnmarshalYAML(unmarshal func(interface{}) error) error {
err := unmarshal((*umRelaybotConfig)(rc))
if err != nil {
return err
}
rc.messageTemplates = template.New("messageTemplates")
for key, format := range rc.MessageFormats {
_, err := rc.messageTemplates.New(string(key)).Parse(format)
if err != nil {
return err
}
}
return nil
}
type Sender struct {
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UserID id.UserID
*event.MemberEventContent
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}
type formatData struct {
Sender Sender
Message string
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Content *event.MessageEventContent
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}
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func (rc *RelaybotConfig) FormatMessage(content *event.MessageEventContent, sender id.UserID, member *event.MemberEventContent) (string, error) {
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var output strings.Builder
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err := rc.messageTemplates.ExecuteTemplate(&output, string(content.MsgType), formatData{
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Sender: Sender{
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UserID: sender,
MemberEventContent: member,
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},
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Content: content,
Message: content.FormattedBody,
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})
return output.String(), err
}