mautrix-whatsapp/config/bridge.go

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// mautrix-whatsapp - A Matrix-WhatsApp puppeting bridge.
// Copyright (C) 2019 Tulir Asokan
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package config
import (
"bytes"
"strconv"
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"strings"
"text/template"
"github.com/Rhymen/go-whatsapp"
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"maunium.net/go/mautrix-appservice"
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"maunium.net/go/mautrix-whatsapp/types"
)
type BridgeConfig struct {
UsernameTemplate string `yaml:"username_template"`
DisplaynameTemplate string `yaml:"displayname_template"`
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ConnectionTimeout int `yaml:"connection_timeout"`
MaxConnectionAttempts int `yaml:"max_connection_attempts"`
ReportConnectionRetry bool `yaml:"report_connection_retry"`
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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"`
CommandPrefix string `yaml:"command_prefix"`
Permissions PermissionConfig `yaml:"permissions"`
usernameTemplate *template.Template `yaml:"-"`
displaynameTemplate *template.Template `yaml:"-"`
}
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func (bc *BridgeConfig) setDefaults() {
bc.ConnectionTimeout = 20
bc.MaxConnectionAttempts = 3
bc.ReportConnectionRetry = true
bc.InitialChatSync = 10
bc.InitialHistoryFill = 20
bc.RecoverChatSync = -1
bc.RecoverHistory = true
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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)
return err
}
type UsernameTemplateArgs struct {
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UserID string
}
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 PermissionConfig map[string]PermissionLevel
type PermissionLevel int
const (
PermissionLevelDefault PermissionLevel = 0
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) {
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 {
case PermissionLevelUser:
rawPC[key] = "user"
case PermissionLevelAdmin:
rawPC[key] = "admin"
default:
rawPC[key] = strconv.Itoa(int(value))
}
}
return rawPC, nil
}
func (pc PermissionConfig) IsWhitelisted(userID string) bool {
return pc.GetPermissionLevel(userID) >= 10
}
func (pc PermissionConfig) IsAdmin(userID string) bool {
return pc.GetPermissionLevel(userID) >= 100
}
func (pc PermissionConfig) GetPermissionLevel(userID string) PermissionLevel {
permissions, ok := pc[userID]
if ok {
return permissions
}
_, homeserver := appservice.ParseUserID(userID)
permissions, ok = pc[homeserver]
if len(homeserver) > 0 && ok {
return permissions
}
permissions, ok = pc["*"]
if ok {
return permissions
}
return PermissionLevelDefault
}