Display desktop notification to the user when the receiver closes the server, and finish up closing the server

onionshare/web.py

@@ -50,6 +50,7 @@ class Web(object):
     REQUEST_OTHER = 3
     REQUEST_CANCELED = 4
     REQUEST_RATE_LIMIT = 5
+    REQUEST_CLOSE_SERVER = 6
     
     def __init__(self, common, gui_mode, receive_mode=False):
         self.common = common
@@ -118,6 +119,9 @@ class Web(object):
         # shutting down the server only works within the context of flask, so the easiest way to do it is over http
         self.shutdown_slug = self.common.random_string(16)
 
+        # Keep track if the server is running
+        self.running = False
+
         # Define the ewb app routes
         self.common_routes()
         if self.receive_mode:
@@ -331,6 +335,7 @@ class Web(object):
             if self.common.settings.get('receive_allow_receiver_shutdown'):
                 self.force_shutdown()
                 r = make_response(render_template('closed.html'))
+                self.add_request(self.REQUEST_CLOSE_SERVER, request.path)
                 return self.add_security_headers(r)
             else:
                 return redirect('/{}'.format(slug_candidate))
@@ -451,11 +456,12 @@ class Web(object):
         """
         Stop the flask web server, from the context of the flask app.
         """
-        # shutdown the flask service
+        # Shutdown the flask service
         func = request.environ.get('werkzeug.server.shutdown')
         if func is None:
             raise RuntimeError('Not running with the Werkzeug Server')
         func()
+        self.running = False
 
     def start(self, port, stay_open=False, persistent_slug=None):
         """
@@ -472,6 +478,7 @@ class Web(object):
         else:
             host = '127.0.0.1'
 
+        self.running = True
         self.app.run(host=host, port=port, threaded=True)
 
     def stop(self, port):
@@ -483,16 +490,17 @@ class Web(object):
         # serving the file
         self.client_cancel = True
 
-        # to stop flask, load http://127.0.0.1:<port>/<shutdown_slug>/shutdown
-        try:
-            s = socket.socket()
-            s.connect(('127.0.0.1', port))
-            s.sendall('GET /{0:s}/shutdown HTTP/1.1\r\n\r\n'.format(self.shutdown_slug))
-        except:
+        # To stop flask, load http://127.0.0.1:<port>/<shutdown_slug>/shutdown
+        if self.running:
             try:
-                urlopen('http://127.0.0.1:{0:d}/{1:s}/shutdown'.format(port, self.shutdown_slug)).read()
+                s = socket.socket()
+                s.connect(('127.0.0.1', port))
+                s.sendall('GET /{0:s}/shutdown HTTP/1.1\r\n\r\n'.format(self.shutdown_slug))
             except:
-                pass
+                try:
+                    urlopen('http://127.0.0.1:{0:d}/{1:s}/shutdown'.format(port, self.shutdown_slug)).read()
+                except:
+                    pass
 
 
 class ZipWriter(object):

onionshare_gui/mode.py

@@ -284,3 +284,41 @@ class Mode(QtWidgets.QWidget):
         Add custom initialization here.
         """
         pass
+
+    # Handle web server events
+
+    def handle_request_load(self, event):
+        """
+        Handle REQUEST_LOAD event.
+        """
+        pass
+
+    def handle_request_download(self, event):
+        """
+        Handle REQUEST_DOWNLOAD event.
+        """
+        pass
+
+    def handle_request_rate_limit(self, event):
+        """
+        Handle REQUEST_RATE_LIMIT event.
+        """
+        pass
+
+    def handle_request_progress(self, event):
+        """
+        Handle REQUEST_PROGRESS event.
+        """
+        pass
+
+    def handle_request_canceled(self, event):
+        """
+        Handle REQUEST_CANCELED event.
+        """
+        pass
+    
+    def handle_request_close_server(self, event):
+        """
+        Handle REQUEST_CLOSE_SERVER event.
+        """
+        pass

onionshare_gui/onionshare_gui.py

@@ -382,41 +382,43 @@ class OnionShareGui(QtWidgets.QMainWindow):
 
         # Process events from the web object
         if self.mode == self.MODE_SHARE:
-            web = self.share_mode.web
+            mode = self.share_mode
         else:
-            web = self.receive_mode.web
+            mode = self.receive_mode
 
         events = []
 
         done = False
         while not done:
             try:
-                r = web.q.get(False)
+                r = mode.web.q.get(False)
                 events.append(r)
             except queue.Empty:
                 done = True
 
         for event in events:
             if event["type"] == Web.REQUEST_LOAD:
-                self.share_mode.handle_request_load(event)
+                mode.handle_request_load(event)
 
             elif event["type"] == Web.REQUEST_DOWNLOAD:
-                self.share_mode.handle_request_download(event)
+                mode.handle_request_download(event)
 
             elif event["type"] == Web.REQUEST_RATE_LIMIT:
-                self.share_mode.handle_request_rate_limit(event)
+                mode.handle_request_rate_limit(event)
 
             elif event["type"] == Web.REQUEST_PROGRESS:
-                self.share_mode.handle_request_progress(event)
+                mode.handle_request_progress(event)
 
             elif event["type"] == Web.REQUEST_CANCELED:
-                self.share_mode.handle_request_canceled(event)
+                mode.handle_request_canceled(event)
+            
+            elif event["type"] == Web.REQUEST_CLOSE_SERVER:
+                mode.handle_request_close_server(event)
 
             elif event["path"] != '/favicon.ico':
-                self.status_bar.showMessage('[#{0:d}] {1:s}: {2:s}'.format(web.error404_count, strings._('other_page_loaded', True), event["path"]))
+                self.status_bar.showMessage('[#{0:d}] {1:s}: {2:s}'.format(mode.web.error404_count, strings._('other_page_loaded', True), event["path"]))
 
-        self.share_mode.timer_callback()
-        self.receive_mode.timer_callback()
+        mode.timer_callback()
 
     def copy_url(self):
         """

onionshare_gui/receive_mode/__init__.py

@@ -92,3 +92,10 @@ class ReceiveMode(Mode):
         # Continue
         self.starting_server_step3.emit()
         self.start_server_finished.emit()
+    
+    def handle_request_close_server(self, event):
+        """
+        Handle REQUEST_CLOSE_SERVER event.
+        """
+        self.stop_server()
+        self.system_tray.showMessage(strings._('systray_close_server_title', True), strings._('systray_close_server_message', True))

share/locale/en.json

@@ -179,5 +179,7 @@
     "gui_settings_downloads_label": "Save files to",
     "gui_settings_downloads_button": "Browse",
     "gui_settings_receive_allow_receiver_shutdown_checkbox": "Allow people who upload files to you to stop Receive Mode for you",
-    "gui_settings_receive_public_mode_checkbox": "Receive Mode is open to the public\n(don't try to prevent people from guessing the OnionShare address)"
+    "gui_settings_receive_public_mode_checkbox": "Receive Mode is open to the public\n(don't try to prevent people from guessing the OnionShare address)",
+    "systray_close_server_title": "OnionShare Server Closed",
+    "systray_close_server_message": "The user closed the server"
 }