Add fifo option to FileCapture

src/pyshark/capture/file_capture.py

@@ -45,8 +45,8 @@ def __init__(self, input_file=None, keep_packets=True, display_filter=None, only
         self.input_filepath = pathlib.Path(input_file)
         if not self.input_filepath.exists():
             raise FileNotFoundError(f"[Errno 2] No such file or directory: {self.input_filepath}")
-        if not self.input_filepath.is_file():
-            raise FileNotFoundError(f"{self.input_filepath} is a directory")
+        if not self.input_filepath.is_file() and not self.input_filepath.is_fifo():
+            raise FileNotFoundError(f"{self.input_filepath} is not a file or fifo")
 
         self.keep_packets = keep_packets
         self._packet_generator = self._packets_from_tshark_sync()

src/pyshark/capture/live_capture.py

@@ -65,15 +65,19 @@ def __init__(self, interface=None, bpf_filter=None, display_filter=None, only_su
 
     def get_parameters(self, packet_count=None):
         """Returns the special tshark parameters to be used according to the configuration of this class."""
-        params = super(LiveCapture, self).get_parameters(packet_count=packet_count)
-        # Read from STDIN
-        params += ["-i", "-"]
+        params = super(LiveCapture, self).get_parameters(
+            packet_count=packet_count)
+        # Read directly from interfaces
+        for interface in self.interfaces:
+            params += ["-i", interface]
         return params
 
     def _verify_capture_parameters(self):
         all_interfaces_names = tshark.get_all_tshark_interfaces_names(self.tshark_path)
         all_interfaces_lowercase = [interface.lower() for interface in all_interfaces_names]
         for each_interface in self.interfaces:
+            if each_interface.startswith("rpcap://"):
+                continue
             if each_interface.isnumeric():
                 continue
             if each_interface.lower() not in all_interfaces_lowercase:

src/pyshark/packet/packet.py

@@ -120,7 +120,7 @@ def __getattr__(self, item):
         Allows layers to be retrieved via get attr. For instance: pkt.ip
         """
         for layer in self.layers:
-            if layer.layer_name == item:
+            if layer.layer_name.lower() == item:
                 return layer
         raise AttributeError("No attribute named %s" % item)