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Refactor SSID and Cisco client count extraction in analyze_pcap for improved reliability and error handling

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Yaro Kasear 2025-04-16 11:17:37 -05:00
parent 3c9fe372ad
commit dd82940684
1 changed files with 11 additions and 26 deletions
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37
enrich.py
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@ -332,45 +332,30 @@ def analyze_pcap(pcapng_path, start_ts, end_ts, ap_bssid, ap_channel):
if subtype not in (5, 8): # Probe Response or Beacon if subtype not in (5, 8): # Probe Response or Beacon
continue continue
try: try:
mgt = packet.get_multiple_layers('wlan.mgt')[0] mgt = packet.get_multiple_layers('wlan.mgt')[0]
tags = mgt._all_fields.get('wlan.tagged.all', {}).get('wlan.tag', [])
ssid = None ssid = None
for tag in mgt.get_field('tag'): for tag in tags:
if tag.get('wlan.tag.number') == '0' and 'wlan.ssid' in tag: if tag.get('wlan.tag.number') == '0' and 'wlan.ssid' in tag:
raw_ssid = tag['wlan.ssid'] raw_ssid = tag['wlan.ssid']
ssid_bytes = bytes.fromhex(raw_ssid.replace(':', '')) ssid_bytes = bytes.fromhex(raw_ssid.replace(':', ''))
ssid = ssid_bytes.decode('utf-8', errors='replace') ssid = ssid_bytes.decode('utf-8', errors='replace')
break elif tag.get('wlan.tag.number') == '133':
try:
num_clients = int(tag.get('wlan.cisco.ccx1.clients'))
cisco_reported_clients.append(num_clients)
except (TypeError, ValueError):
pass # Garbage? We ignore it.
if not ssid: if not ssid:
print("[DEBUG] No SSID found in tags.") print("[DEBUG] No SSID found in tags.")
continue continue
except Exception as e: except Exception as e:
print(f"[DEBUG] Error parsing SSID: {e}") print(f"[DEBUG] Error parsing SSID or Cisco client count: {e}")
continue continue
try:
mgt = packet.get_multiple_layers('wlan.mgt')[0]
if hasattr(mgt, 'get_field'):
tags = mgt._all_fields.get('wlan.tagged.all', {}).get('wlan.tag', [])
if not tags:
print("[DEBUG] wlan.mgt present, but no tags parsed.")
if tags and isinstance(tags, list):
for tag in tags:
if tag.get('wlan.tag.number') == '133':
try:
num_clients = int(tag.get('wlan.cisco.ccx1.clients'))
except (TypeError, ValueError):
num_clients = 0
cisco_reported_clients.append(num_clients)
break
except Exception as e:
print(f"[DEBUG] Could not parse Cisco client count: {e}")
cisco_reported_clients = None
bssid = getattr(wlan, 'bssid', '').lower() bssid = getattr(wlan, 'bssid', '').lower()