Add a script for seeing what radiotap can tell us.

panda_truth_probe.py

@@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+import pyshark
+import argparse
+
+def analyze_radiotap_info(pcapng_path, limit=100):
+    cap = pyshark.FileCapture(
+        pcapng_path,
+        display_filter='radiotap.dbm_antsignal',
+        use_json=True,
+        include_raw=False,
+        keep_packets=False
+    )
+
+    count = 0
+    valid_entries = 0
+
+    print(f"\nAnalyzing up to {limit} packets for signal/noise info...\n")
+
+    for packet in cap:
+        try:
+            if not hasattr(packet, 'radiotap'):
+                continue
+
+            signal = getattr(packet.radiotap, 'dbm_antsignal', None)
+            noise = getattr(packet.radiotap, 'dbm_antnoise', None)
+
+            print(f"Packet #{count + 1}")
+            print(f"  Signal: {signal} dBm")
+            print(f"  Noise:  {noise} dBm")
+
+            if signal is not None and noise is not None:
+                try:
+                    snr = int(signal) - int(noise)
+                    print(f"  SNR:    {snr} dB")
+                except ValueError:
+                    print("  SNR:    [could not compute]")
+
+            print("")
+            valid_entries += 1
+            count += 1
+            if count >= limit:
+                break
+
+        except Exception as e:
+            print(f"  [!] Error reading packet: {e}")
+            continue
+
+    cap.close()
+
+    if valid_entries == 0:
+        print("No usable radiotap signal/noise data found. Your dongle may be a liar.")
+    else:
+        print(f"Analyzed {valid_entries} packets with radiotap data.\n")
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--pcapng', required=True, help='Path to your .pcapng file')
+    parser.add_argument('--limit', type=int, default=100, help='Max number of packets to analyze')
+    args = parser.parse_args()
+
+    analyze_radiotap_info(args.pcapng, args.limit)