Remove netifaces; improve errors for unknown interfaces

HISTORY.rst

@@ -3,6 +3,12 @@
 Release History
 ---------------
 
+0.5.1 (2020-07-19)
+++++++++++++++++++
+
+* Remove dependency on netifaces
+* Improve errors when attempting to sniff on unknown interfaces
+
 0.5.0 (2020-07-19)
 ++++++++++++++++++
 

netdumplings/_version.py

@@ -1 +1 @@
-__version__ = '0.5.0'
+__version__ = '0.5.1'

netdumplings/dumplingkitchen.py

@@ -286,8 +286,15 @@ def run(self):
                 sniff(iface=self.interface, filter=self.filter,
                       prn=self._process_packet, store=0)
         except Scapy_Exception as e:
-            self._logger.error(f"Error from scapy: {e}")
             self._logger.error(
-                "The sniffer encountered a problem; try running as root if "
-                "you're not already"
+                "The sniffer encountered a problem (it might help to run as "
+                "root if you're not already)"
             )
+            self._logger.error(f"Error from scapy: {e}")
+        except ValueError as e:
+            # On Windows an unknown interface is a ValueError (on OS X it's
+            # picked up by Scapy_Exception).
+            if "Unknown pypcap network interface" in str(e):
+                self._logger.error(str(e))
+            else:
+                raise

setup.py

@@ -20,7 +20,6 @@
 install_requires = [
     'click~=7.1',
     'colorama',
-    'netifaces',
     'pygments',
     'scapy~=2.4.3',
     'termcolor',