[#3348] Fix TypeError adding peers to torrents

Python3 has stricter type checking and passing a port as string results
in libtorrent raising a TypeError.

Fixed by casting port to int, along with refactoring to ensure ipv6 is
correctly parsing and a useful error is output to user with invalid ip
or port details.

https://dev.deluge-torrent.org/ticket/3348

deluge/core/torrent.py

@@ -1212,8 +1212,8 @@ class Torrent(object):
             bool: True is successful, otherwise False
         """
         try:
-            self.handle.connect_peer((peer_ip, peer_port), 0)
-        except RuntimeError as ex:
+            self.handle.connect_peer((peer_ip, int(peer_port)), 0)
+        except (RuntimeError, ValueError) as ex:
             log.debug('Unable to connect to peer: %s', ex)
             return False
         return True

deluge/tests/test_torrent.py

@@ -345,3 +345,11 @@ class TorrentTestCase(BaseTestCase):
 
         result = self.torrent.rename_files([[0, 'new_рбачёв']])
         self.assertIsNone(result)
+
+    def test_connect_peer_port(self):
+        """Test to ensure port is int for libtorrent"""
+        atp = self.get_torrent_atp('test_torrent.file.torrent')
+        handle = self.session.add_torrent(atp)
+        self.torrent = Torrent(handle, {})
+        self.assertFalse(self.torrent.connect_peer('127.0.0.1', 'text'))
+        self.assertTrue(self.torrent.connect_peer('127.0.0.1', '1234'))

deluge/ui/gtk3/common.py

@@ -29,7 +29,7 @@ from gi.repository.Gtk import (
     SortType,
 )
 
-from deluge.common import PY2, get_pixmap, osx_check, windows_check
+from deluge.common import PY2, get_pixmap, is_ip, osx_check, windows_check
 
 log = logging.getLogger(__name__)
 
@@ -393,3 +393,30 @@ def get_clipboard_text():
 
 def windowing(like):
     return like.lower() in str(type(Display.get_default())).lower()
+
+
+def parse_ip_port(text):
+    """Return an IP and port from text.
+
+    Parses both IPv4 and IPv6.
+
+    Params:
+        text (str): Text to be parsed for IP and port.
+
+    Returns:
+        tuple: (ip (str), port (int))
+
+    """
+    if '.' in text:
+        # ipv4
+        ip, __, port = text.rpartition(':')
+    elif '[' in text:
+        # ipv6
+        ip, __, port = text.partition('[')[2].partition(']:')
+    else:
+        return None, None
+
+    if ip and is_ip(ip) and port.isdigit():
+        return ip, int(port)
+    else:
+        return None, None

deluge/ui/gtk3/peers_tab.py

@@ -32,6 +32,7 @@ from .common import (
     icon_downloading,
     icon_seeding,
     load_pickled_state_file,
+    parse_ip_port,
     save_pickled_state_file,
 )
 from .torrentdetails import Tab
@@ -376,19 +377,15 @@ class PeersTab(Tab):
         peer_dialog = builder.get_object('connect_peer_dialog')
         txt_ip = builder.get_object('txt_ip')
         response = peer_dialog.run()
+
         if response:
             value = txt_ip.get_text()
-            if value and ':' in value:
-                if ']' in value:
-                    # ipv6
-                    ip = value.split(']')[0][1:]
-                    port = value.split(']')[1][1:]
-                else:
-                    # ipv4
-                    ip = value.split(':')[0]
-                    port = value.split(':')[1]
-                if deluge.common.is_ip(ip):
-                    log.debug('adding peer %s to %s', value, self.torrent_id)
-                    client.core.connect_peer(self.torrent_id, ip, port)
+            ip, port = parse_ip_port(value)
+            if ip and port:
+                log.info('Adding peer IP: %s port: %s to %s', ip, port, self.torrent_id)
+                client.core.connect_peer(self.torrent_id, ip, port)
+            else:
+                log.error('Error parsing peer "%s"', value)
+
         peer_dialog.destroy()
         return True