import collections import gc import hashlib import httplib import HydrusConstants as HC import HydrusExceptions import HydrusNetworking import HydrusSessions import HydrusServer import HydrusTags import HydrusThreading import ClientConstants as CC import ClientDB import ClientGUI import ClientGUIDialogs import os import random import shutil import sqlite3 import stat import subprocess import sys import threading import time import traceback import wx import wx.richtext from twisted.internet import reactor from twisted.internet import defer ID_ANIMATED_EVENT_TIMER = wx.NewId() ID_MAINTENANCE_EVENT_TIMER = wx.NewId() class Controller( wx.App ): def _Read( self, action, *args, **kwargs ): return self._db.Read( action, HC.HIGH_PRIORITY, *args, **kwargs ) def _Write( self, action, priority, synchronous, *args, **kwargs ): return self._db.Write( action, priority, synchronous, *args, **kwargs ) def BackupDatabase( self ): with wx.DirDialog( self._gui, 'Select backup location.' ) as dlg: if dlg.ShowModal() == wx.ID_OK: path = dlg.GetPath() message = '''Are you sure "''' + path + '''" is the correct directory? Everything already in that directory will be deleted before the backup starts. The database will be locked while the backup occurs, which may lock up your gui as well.''' with ClientGUIDialogs.DialogYesNo( self._gui, message ) as dlg_yn: if dlg_yn.ShowModal() == wx.ID_YES: self.Write( 'backup', path ) def ClearCaches( self ): self._thumbnail_cache.Clear() self._fullscreen_image_cache.Clear() self._preview_image_cache.Clear() def Clipboard( self, type, data ): # need this cause can't do it in a non-gui thread if type == 'paths': paths = data if wx.TheClipboard.Open(): data = wx.DataObjectComposite() file_data = wx.FileDataObject() for path in paths: file_data.AddFile( path ) text_data = wx.TextDataObject( os.linesep.join( paths ) ) data.Add( file_data, True ) data.Add( text_data, False ) wx.TheClipboard.SetData( data ) wx.TheClipboard.Close() else: wx.MessageBox( 'Could not get permission to access the clipboard!' ) elif type == 'text': text = data if wx.TheClipboard.Open(): data = wx.TextDataObject( text ) wx.TheClipboard.SetData( data ) wx.TheClipboard.Close() else: wx.MessageBox( 'I could not get permission to access the clipboard.' ) def CurrentlyIdle( self ): if HC.GetNow() - self._last_idle_time > 60 * 60: # a long time, so we probably just woke up from a sleep self._last_idle_time = HC.GetNow() return HC.GetNow() - self._last_idle_time > 20 * 60 # 20 mins since last user-initiated db request def EventPubSub( self, event ): HC.busy_doing_pubsub = True try: HC.pubsub.WXProcessQueueItem() finally: HC.busy_doing_pubsub = False def GetFullscreenImageCache( self ): return self._fullscreen_image_cache def GetGUI( self ): return self._gui def GetLog( self ): return self._log def GetManager( self, type ): return self._managers[ type ] def GetPreviewImageCache( self ): return self._preview_image_cache def GetThumbnailCache( self ): return self._thumbnail_cache def MaintainDB( self ): sys.stdout.flush() sys.stderr.flush() gc.collect() now = HC.GetNow() shutdown_timestamps = self.Read( 'shutdown_timestamps' ) if now - shutdown_timestamps[ CC.SHUTDOWN_TIMESTAMP_VACUUM ] > 86400 * 5: self.Write( 'vacuum' ) if now - shutdown_timestamps[ CC.SHUTDOWN_TIMESTAMP_DELETE_ORPHANS ] > 86400 * 3: self.Write( 'delete_orphans' ) if now - self._timestamps[ 'service_info_cache_fatten' ] > 60 * 20: service_identifiers = self.Read( 'service_identifiers' ) for service_identifier in service_identifiers: self.Read( 'service_info', service_identifier ) def OnInit( self ): HC.app = self HC.http = HydrusNetworking.HTTPConnectionManager() self._timestamps = collections.defaultdict( lambda: 0 ) self._timestamps[ 'boot' ] = HC.GetNow() self._local_service = None self._server = None init_result = True try: try: def make_temp_files_deletable( function_called, path, traceback_gumpf ): os.chmod( path, stat.S_IWRITE ) function_called( path ) # try again if os.path.exists( HC.TEMP_DIR ): shutil.rmtree( HC.TEMP_DIR, onerror = make_temp_files_deletable ) except: pass try: if not os.path.exists( HC.TEMP_DIR ): os.mkdir( HC.TEMP_DIR ) except: pass self._splash = ClientGUI.FrameSplash() self.SetSplashText( 'log' ) self._log = CC.Log() self.SetSplashText( 'db' ) db_initialised = False while not db_initialised: try: self._db = ClientDB.DB() db_initialised = True except HydrusExceptions.DBAccessException as e: try: print( HC.u( e ) ) except: print( repr( HC.u( e ) ) ) message = 'This instance of the client had a problem connecting to the database, which probably means an old instance is still closing.' message += os.linesep + os.linesep message += 'If the old instance does not close for a _very_ long time, you can usually safely force-close it from task manager.' with ClientGUIDialogs.DialogYesNo( None, message, yes_label = 'wait a bit, then try again', no_label = 'forget it' ) as dlg: if dlg.ShowModal() == wx.ID_YES: time.sleep( 3 ) else: raise HydrusExceptions.PermissionException() threading.Thread( target = self._db.MainLoop, name = 'Database Main Loop' ).start() if HC.options[ 'password' ] is not None: self.SetSplashText( 'waiting for password' ) while True: with wx.PasswordEntryDialog( None, 'Enter your password', 'Enter password' ) as dlg: if dlg.ShowModal() == wx.ID_OK: if hashlib.sha256( dlg.GetValue() ).digest() == HC.options[ 'password' ]: break else: raise HydrusExceptions.PermissionException() self.SetSplashText( 'caches and managers' ) self._managers = {} self._managers[ 'hydrus_sessions' ] = HydrusSessions.HydrusSessionManagerClient() self._managers[ 'tag_censorship' ] = HydrusTags.TagCensorshipManager() self._managers[ 'tag_siblings' ] = HydrusTags.TagSiblingsManager() self._managers[ 'tag_parents' ] = HydrusTags.TagParentsManager() self._managers[ 'undo' ] = CC.UndoManager() self._managers[ 'web_sessions' ] = HydrusSessions.WebSessionManagerClient() self._fullscreen_image_cache = CC.RenderedImageCache( 'fullscreen' ) self._preview_image_cache = CC.RenderedImageCache( 'preview' ) self._thumbnail_cache = CC.ThumbnailCache() CC.GlobalBMPs.STATICInitialise() self.SetSplashText( 'gui' ) self._gui = ClientGUI.FrameGUI() HC.pubsub.sub( self, 'Clipboard', 'clipboard' ) HC.pubsub.sub( self, 'RestartServer', 'restart_server' ) self.Bind( HC.EVT_PUBSUB, self.EventPubSub ) # this is because of some bug in wx C++ that doesn't add these by default wx.richtext.RichTextBuffer.AddHandler( wx.richtext.RichTextHTMLHandler() ) wx.richtext.RichTextBuffer.AddHandler( wx.richtext.RichTextXMLHandler() ) self.SetSplashText( 'starting daemons' ) if HC.is_first_start: self._gui.DoFirstStart() if HC.is_db_updated: wx.CallLater( 1, HC.ShowText, 'The client has updated to version ' + HC.u( HC.SOFTWARE_VERSION ) + '!' ) self.RestartServer() self._db.StartDaemons() self._last_idle_time = 0.0 self.Bind( wx.EVT_TIMER, self.TIMEREventMaintenance, id = ID_MAINTENANCE_EVENT_TIMER ) self._maintenance_event_timer = wx.Timer( self, ID_MAINTENANCE_EVENT_TIMER ) self._maintenance_event_timer.Start( 20 * 60000, wx.TIMER_CONTINUOUS ) except sqlite3.OperationalError as e: message = 'Database error!' + os.linesep + os.linesep + traceback.format_exc() print message wx.MessageBox( message ) init_result = False except HydrusExceptions.PermissionException as e: init_result = False except: wx.MessageBox( 'Woah, bad error:' + os.linesep + os.linesep + traceback.format_exc() ) init_result = False finally: try: wx.CallAfter( self._splash.Destroy ) except: pass return init_result def PrepStringForDisplay( self, text ): if HC.options[ 'gui_capitalisation' ]: return text else: return text.lower() def Read( self, action, *args, **kwargs ): self._last_idle_time = HC.GetNow() return self._Read( action, *args, **kwargs ) def ReadDaemon( self, action, *args, **kwargs ): result = self._Read( action, *args, **kwargs ) time.sleep( 0.1 ) return result def RestartServer( self ): port = HC.options[ 'local_port' ] def TWISTEDRestartServer(): def StartServer( *args, **kwargs ): try: connection = httplib.HTTPConnection( '127.0.0.1', port, timeout = 10 ) try: connection.connect() connection.close() text = 'The client\'s local server could not start because something was already bound to port ' + HC.u( port ) + '.' text += os.linesep * 2 text += 'This usually means another hydrus client is already running and occupying that port. It could be a previous instantiation of this client that has yet to shut itself down.' text += os.linesep * 2 text += 'You can change the port this client tries to host its local server on in file->options.' wx.CallLater( 1, HC.ShowText, text ) except: local_file_server_service_identifier = HC.ServerServiceIdentifier( 'local file', HC.LOCAL_FILE ) self._local_service = reactor.listenTCP( port, HydrusServer.HydrusServiceLocal( local_file_server_service_identifier, 'hello' ) ) connection = httplib.HTTPConnection( '127.0.0.1', port, timeout = 10 ) try: connection.connect() connection.close() except: text = 'Tried to bind port ' + HC.u( port ) + ' but it failed' wx.CallLater( 1, HC.ShowText, text ) except Exception as e: wx.CallAfter( HC.ShowException, e ) if self._local_service is None: StartServer() else: deferred = defer.maybeDeferred( self._local_service.stopListening ) deferred.addCallback( StartServer ) reactor.callFromThread( TWISTEDRestartServer ) def RestoreDatabase( self ): with wx.DirDialog( self._gui, 'Select backup location.' ) as dlg: if dlg.ShowModal() == wx.ID_OK: path = dlg.GetPath() message = '''Are you sure you want to restore a backup from "''' + path + '''"? Everything in your current database will be deleted! The gui will shut down, and then it will take a while to complete the restore. Once it is done, the client will restart.''' with ClientGUIDialogs.DialogYesNo( self._gui, message ) as dlg_yn: if dlg_yn.ShowModal() == wx.ID_YES: self._gui.Hide() self._gui.Close() self._db.Shutdown() while not self._db.GetLoopFinished(): time.sleep( 0.1 ) self._db.RestoreBackup( path ) call_stuff = [ sys.executable ] call_stuff.extend( sys.argv ) subprocess.call( call_stuff, shell = True ) def SetSplashText( self, text ): self._splash.SetText( text ) self.Yield() # this processes the event queue immediately, so the paint event can occur def StartFileQuery( self, query_key, search_context ): HydrusThreading.CallToThread( self.THREADDoFileQuery, query_key, search_context ) def THREADDoFileQuery( self, query_key, search_context ): try: query_hash_ids = HC.app.Read( 'file_query_ids', search_context ) query_hash_ids = list( query_hash_ids ) random.shuffle( query_hash_ids ) limit = search_context.GetSystemPredicates().GetLimit() if limit is not None: query_hash_ids = query_hash_ids[ : limit ] file_service_identifier = search_context.GetFileServiceIdentifier() include_current_tags = search_context.IncludeCurrentTags() media_results = [] include_pending_tags = search_context.IncludePendingTags() i = 0 base = 256 while i < len( query_hash_ids ): if query_key.IsCancelled(): return if i == 0: ( last_i, i ) = ( 0, base ) else: ( last_i, i ) = ( i, i + base ) sub_query_hash_ids = query_hash_ids[ last_i : i ] more_media_results = HC.app.Read( 'media_results_from_ids', file_service_identifier, sub_query_hash_ids ) media_results.extend( more_media_results ) HC.pubsub.pub( 'set_num_query_results', len( media_results ), len( query_hash_ids ) ) HC.app.WaitUntilGoodTimeToUseGUIThread() HC.pubsub.pub( 'file_query_done', query_key, media_results ) except Exception as e: HC.ShowException( e ) def TIMEREventMaintenance( self, event ): del gc.garbage[:] if self.CurrentlyIdle(): self.MaintainDB() HC.pubsub.pub( 'clear_closed_pages' ) def WaitUntilGoodTimeToUseGUIThread( self ): while True: if HC.shutdown: raise Exception( 'Client shutting down!' ) elif HC.pubsub.NotBusy() and not HC.busy_doing_pubsub: if not self.CurrentlyIdle(): time.sleep( 1 ) return else: time.sleep( 0.0001 ) def Write( self, action, *args, **kwargs ): self._last_idle_time = HC.GetNow() if action == 'content_updates': self._managers[ 'undo' ].AddCommand( 'content_updates', *args, **kwargs ) return self._Write( action, HC.HIGH_PRIORITY, False, *args, **kwargs ) def WriteSynchronous( self, action, *args, **kwargs ): result = self._Write( action, HC.LOW_PRIORITY, True, *args, **kwargs ) time.sleep( 0.1 ) return result