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fix nits

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This commit is contained in:
Cooper Quintin
2024-12-17 09:26:16 -08:00
committed by Will Greenberg
parent b2cd735a07
commit 4009e3d1ed
2 changed files with 6 additions and 4 deletions
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7
tools/pcap_check.py
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@@ -10,13 +10,12 @@ def process_pcap(pcap_path):
print('Opening {}...'.format(pcap_path))
count = 0
for (pkt_data, pkt_metadata,) in RawPcapNgReader(pcap_path):
for pkt_data, pkt_metadata in RawPcapNgReader(pcap_path):
count += 1
gsmtap_len = pkt_data[UDP_LEN+1] * 4 # gsmtap header length is stored in the 2nd byte of GSMTAP as a number of 32 bit words
header_end = gsmtap_len + UDP_LEN #length of UDP/IP header plus GSMTAP header
gsmtap_end_idx = (len(pkt_data) - header_end) * -1
gsmtap_hdr = pkt_data[UDP_LEN:gsmtap_end_idx]
gsmtap_hdr = pkt_data[UDP_LEN:header_end]
if gsmtap_hdr[2] != TYPE_LTE_NAS:
continue
@@ -26,7 +25,7 @@ def process_pcap(pcap_path):
uplink = (gsmtap_hdr[4] & 0b01000000) >> 6
buffer = pkt_data[header_end:]
msg = nasparse.parse_nas_message(buffer, uplink)
(triggered, message)= nasparse.heur_ue_imsi_sent(msg)
triggered, message = nasparse.heur_ue_imsi_sent(msg)
if triggered:
print(f"Frame {count} triggered heuristic: {message}")