forked from linuxdeepin/dde-daemon
/
manager.go
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/
manager.go
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/*
* Copyright (C) 2014 ~ 2018 Deepin Technology Co., Ltd.
*
* Author: jouyouyun <jouyouwen717@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package mime
import (
"fmt"
"os"
"path/filepath"
"strings"
"time"
"github.com/fsnotify/fsnotify"
"github.com/godbus/dbus"
"pkg.deepin.io/lib/appinfo/desktopappinfo"
"pkg.deepin.io/lib/dbusutil"
"pkg.deepin.io/lib/gsettings"
"pkg.deepin.io/lib/keyfile"
"pkg.deepin.io/lib/strv"
dutils "pkg.deepin.io/lib/utils"
"pkg.deepin.io/lib/xdg/basedir"
)
//go:generate dbusutil-gen em -type Manager
const (
AppMimeTerminal = "application/x-terminal"
dbusServiceName = "com.deepin.daemon.Mime"
dbusPath = "/com/deepin/daemon/Mime"
dbusInterface = dbusServiceName
)
type Manager struct {
service *dbusutil.Service
userManager *userAppManager
fsWatcher *fsnotify.Watcher
changeTimer *time.Timer
done chan struct{}
doneResp chan struct{}
//nolint
signals *struct {
Change struct{}
}
}
func NewManager(service *dbusutil.Service) *Manager {
m := new(Manager)
m.service = service
m.done = make(chan struct{})
m.doneResp = make(chan struct{})
userManager, err := newUserAppManager(userAppFile)
if err != nil {
userManager = &userAppManager{
filename: userAppFile,
}
}
m.userManager = userManager
gsettings.ConnectChanged(gsSchemaDefaultTerminal, gsKeyAppId, func(key string) {
logger.Debug("default terminal app-id changed")
m.emitSignalChange()
})
m.fsWatcher, err = fsnotify.NewWatcher()
if err == nil {
go m.handleFileEvents()
dirs := getDirsNeedWatched()
for _, dir := range dirs {
logger.Debugf("watch dir %q", dir)
if err := m.fsWatcher.Add(dir); err != nil {
logger.Warning(err)
}
}
} else {
logger.Warning("new fs watcher failed:", err)
}
return m
}
func getDirsNeedWatched() []string {
dirs := make([]string, 0, 5)
appsDirs := getApplicatonsDirs()
dirs = append(dirs, appsDirs...)
dirs = append(dirs, basedir.GetUserConfigDir())
sysConfDirs := basedir.GetSystemConfigDirs()
dirs = append(dirs, sysConfDirs...)
return dirs
}
func getApplicatonsDirs() []string {
dirs := make([]string, 0, 3)
dirs = append(dirs, basedir.GetUserDataDir())
sysDirs := basedir.GetSystemDataDirs()
dirs = append(dirs, sysDirs...)
ret := make([]string, len(dirs))
for i, dir := range dirs {
ret[i] = filepath.Join(dir, "applications")
}
return ret
}
func (m *Manager) handleFileEvents() {
watcher := m.fsWatcher
defer close(m.doneResp)
defer watcher.Close()
for {
select {
case event, ok := <-watcher.Events:
if !ok {
logger.Error("Invalid watcher event:", event)
return
}
logger.Debug("event:", event)
base := filepath.Base(event.Name)
if base == "mimeinfo.cache" || base == "mimeapps.list" {
m.deferEmitChange()
}
case err := <-watcher.Errors:
logger.Warning("error:", err)
return
case <-m.done:
return
}
}
}
func (m *Manager) deferEmitChange() {
delay := 2 * time.Second
if m.changeTimer == nil {
m.changeTimer = time.AfterFunc(delay, func() {
m.emitSignalChange()
})
} else {
m.changeTimer.Reset(delay)
}
}
func (m *Manager) emitSignalChange() {
err := m.service.Emit(m, "Change")
if err != nil {
logger.Warning(err)
}
}
func (m *Manager) destroy() {
m.changeTimer.Stop()
m.changeTimer = nil
// send close signal to handleFileEvents goroutine
close(m.done)
// Wait for handleFileEvents goroutine to close
<-m.doneResp
}
func (m *Manager) initConfigData() {
if dutils.IsFileExist(filepath.Join(basedir.GetUserConfigDir(),
"mimeapps.list")) {
return
}
go func() {
err := m.doInitConfigData()
if err != nil {
logger.Warning("Init mime config file failed", err)
} else {
logger.Info("Init mime config file successfully")
}
}()
}
func (m *Manager) doInitConfigData() error {
return genMimeAppsFile(
findFilePath(filepath.Join("dde-daemon", "mime", "data.json")))
}
// Reset reset mimes default app
func (m *Manager) Reset() {
resetTerminal()
go func() {
err := m.doInitConfigData()
if err != nil {
logger.Warning("Init mime config file failed", err)
}
m.emitSignalChange()
}()
}
// GetDefaultApp get the default app id for the special mime
// ty: the special mime
// ret0: the default app info
// ret1: error message
func (m *Manager) GetDefaultApp(mimeType string) (defaultApp string, busErr *dbus.Error) {
var (
info *AppInfo
err error
)
if mimeType == AppMimeTerminal {
info, err = getDefaultTerminal()
} else {
info, err = GetDefaultAppInfo(mimeType)
}
if err != nil {
return "", dbusutil.ToError(err)
}
defaultApp, err = toJSON(info)
if err != nil {
return "", dbusutil.ToError(err)
}
return defaultApp, nil
}
// SetDefaultApp set the default app for the special mime list
// ty: the special mime
// deskId: the default app desktop id
// ret0: error message
func (m *Manager) SetDefaultApp(mimes []string, desktopId string) *dbus.Error {
var err error
for _, mime := range mimes {
if mime == AppMimeTerminal {
err = setDefaultTerminal(desktopId)
} else {
err = SetAppInfo(mime, desktopId)
}
if err != nil {
logger.Warningf("Set '%s' default app to '%s' failed: %v",
mime, desktopId, err)
break
}
}
return dbusutil.ToError(err)
}
// ListApps list the apps that supported the special mime
// ty: the special mime
// ret0: the app infos
func (m *Manager) ListApps(mimeType string) (apps string, busErr *dbus.Error) {
var infos AppInfos
if mimeType == AppMimeTerminal {
infos = getTerminalInfos()
} else {
infos = GetAppInfos(mimeType)
}
// filter out deepin custom desktop file
filteredInfos := make(AppInfos, 0, len(infos))
for _, info := range infos {
if isDeepinCustomDesktopFile(info.fileName) {
continue
}
filteredInfos = append(filteredInfos, info)
}
apps, err := toJSON(filteredInfos)
if err != nil {
return "", dbusutil.ToError(err)
}
return apps, nil
}
func (m *Manager) DeleteApp(mimeTypes []string, desktopId string) *dbus.Error {
err := m.deleteApp(mimeTypes, desktopId)
return dbusutil.ToError(err)
}
var userMimeAppsListFile = filepath.Join(basedir.GetUserConfigDir(), "mimeapps.list")
func (m *Manager) deleteApp(mimeTypes []string, desktopId string) error {
if m.userManager.DeleteByMimes(mimeTypes, desktopId) {
err := m.userManager.Write()
if nil != err {
return err
}
}
dai := desktopappinfo.NewDesktopAppInfo(desktopId)
if dai == nil {
return fmt.Errorf("not found desktop app info %q", desktopId)
}
desktopId = toDesktopId(dai.GetId())
mimeAppsKeyFile := keyfile.NewKeyFile()
err := mimeAppsKeyFile.LoadFromFile(userMimeAppsListFile)
if err != nil && !os.IsNotExist(err) {
return err
}
originMimeTypes := strv.Strv(dai.GetMimeTypes())
for _, mimeType := range mimeTypes {
if originMimeTypes.Contains(mimeType) {
// ignore, should not delete
} else {
deleteMimeAssociation(mimeAppsKeyFile, mimeType, desktopId)
}
}
return saveMimeAppsList(mimeAppsKeyFile)
}
func toDesktopId(appId string) string {
appId = strings.Replace(appId, "/", "-", -1)
return appId + ".desktop"
}
const (
sectionDefaultApps = "Default Applications"
sectionAddedAssociations = "Added Associations"
)
func deleteMimeAssociation(mimeAppsKf *keyfile.KeyFile, mimeType string, desktopId string) {
for _, section := range []string{sectionDefaultApps, sectionAddedAssociations} {
apps, _ := mimeAppsKf.GetStringList(section, mimeType)
if strv.Strv(apps).Contains(desktopId) {
apps, _ = strv.Strv(apps).Delete(desktopId)
if len(apps) > 0 {
mimeAppsKf.SetStringList(section, mimeType, apps)
} else {
mimeAppsKf.DeleteKey(section, mimeType)
}
}
}
}
func saveMimeAppsList(mimeAppsKeyFile *keyfile.KeyFile) error {
tmpFile := userMimeAppsListFile + ".tmp"
err := mimeAppsKeyFile.SaveToFile(tmpFile)
if err != nil {
return err
}
return os.Rename(tmpFile, userMimeAppsListFile)
}
var userAppDir string
func init() {
userDataDir := basedir.GetUserDataDir()
// userAppDir is $HOME/.local/share/applications
userAppDir = filepath.Join(userDataDir, "applications")
}
// The default applications module of the DDE Control Center
// creates the desktop file with the file name beginning with
// "deepin-custom" in the applications directory under the XDG
// user data directory.
func isDeepinCustomDesktopFile(file string) bool {
dir := filepath.Dir(file)
base := filepath.Base(file)
return dir == userAppDir && strings.HasPrefix(base, "deepin-custom-")
}
func (m *Manager) ListUserApps(mimeType string) (userApps string, busErr *dbus.Error) {
apps := m.userManager.Get(mimeType)
if len(apps) == 0 {
return "", nil
}
var infos AppInfos
for _, app := range apps {
info, err := newAppInfoById(app.DesktopId)
if err != nil {
logger.Warningf("New '%s' failed: %v", app.DesktopId, err)
continue
}
info.CanDelete = true
infos = append(infos, info)
}
userApps, err := toJSON(infos)
if err != nil {
return "", dbusutil.ToError(err)
}
return userApps, nil
}
func (m *Manager) AddUserApp(mimeTypes []string, desktopId string) *dbus.Error {
logger.Debugf("Manager.AddUserApp mimeTypes: %v, desktopId: %q", mimeTypes, desktopId)
// check app validity
_, err := newAppInfoById(desktopId)
if err != nil {
logger.Warningf("invalid desktop id %q", desktopId)
return dbusutil.ToError(err)
}
if !m.userManager.Add(mimeTypes, desktopId) {
return nil
}
err = m.userManager.Write()
return dbusutil.ToError(err)
}
func (m *Manager) DeleteUserApp(desktopId string) *dbus.Error {
logger.Debugf("Manager.DeleteUserApp %q", desktopId)
err := m.userManager.Delete(desktopId)
if err != nil {
logger.Warningf("Delete %q failed: %v", desktopId, err)
return dbusutil.ToError(err)
}
err = m.userManager.Write()
return dbusutil.ToError(err)
}
func (*Manager) GetInterfaceName() string {
return dbusInterface
}