96 lines
2.4 KiB
Go
96 lines
2.4 KiB
Go
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// maubot - A plugin-based Matrix bot system written in Go.
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// Copyright (C) 2018 Tulir Asokan
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package maubot
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import (
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"fmt"
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"plugin"
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"maubot.xyz/database"
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"maubot.xyz/matrix"
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)
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type Plugin interface {
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Start()
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Stop()
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}
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type PluginWrapper struct {
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Plugin
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Creator *PluginCreator
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DB *database.Plugin
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}
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type PluginCreatorFunc func(bot *Bot, info *database.Plugin, client *matrix.Client) Plugin
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type PluginCreator struct {
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Create PluginCreatorFunc
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Name string
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Version string
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Path string
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}
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func LoadPlugin(path string) (*PluginCreator, error) {
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rawPlugin, err := plugin.Open(path)
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if err != nil {
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return nil, fmt.Errorf("failed to open: %v", err)
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}
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pluginCreatorSymbol, err := rawPlugin.Lookup("Plugin")
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if err == nil {
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pluginCreator, ok := pluginCreatorSymbol.(*PluginCreator)
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if ok {
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pluginCreator.Path = path
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return pluginCreator, nil
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}
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}
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pluginCreatorFuncSymbol, err := rawPlugin.Lookup("Create")
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if err != nil {
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return nil, fmt.Errorf("symbol \"Create\" not found: %v", err)
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}
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pluginCreatorFunc, ok := pluginCreatorFuncSymbol.(PluginCreatorFunc)
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if !ok {
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return nil, fmt.Errorf("symbol \"Create\" does not implement maubot.PluginCreator")
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}
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nameSymbol, err := rawPlugin.Lookup("Name")
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if err != nil {
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return nil, fmt.Errorf("symbol \"Name\" not found: %v", err)
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}
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name, ok := nameSymbol.(string)
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if !ok {
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return nil, fmt.Errorf("symbol \"Name\" is not a string")
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}
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versionSymbol, err := rawPlugin.Lookup("Version")
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if err != nil {
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return nil, fmt.Errorf("symbol \"Version\" not found: %v", err)
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}
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version, ok := versionSymbol.(string)
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if !ok {
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return nil, fmt.Errorf("symbol \"Version\" is not a string")
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}
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return &PluginCreator{
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Create: pluginCreatorFunc,
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Name: name,
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Version: version,
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Path: path,
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}, nil
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}
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