diff options
Diffstat (limited to 'contrib/wpa/wpa_supplicant/utils/log2pcap.py')
-rwxr-xr-x | contrib/wpa/wpa_supplicant/utils/log2pcap.py | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/contrib/wpa/wpa_supplicant/utils/log2pcap.py b/contrib/wpa/wpa_supplicant/utils/log2pcap.py new file mode 100755 index 0000000..65e2fa1 --- /dev/null +++ b/contrib/wpa/wpa_supplicant/utils/log2pcap.py @@ -0,0 +1,54 @@ +#!/usr/bin/env python +# +# Copyright (c) 2012, Intel Corporation +# +# Author: Johannes Berg <johannes@sipsolutions.net> +# +# This software may be distributed under the terms of the BSD license. +# See README for more details. + +import sys, struct, re + +def write_pcap_header(pcap_file): + pcap_file.write( + struct.pack('<IHHIIII', + 0xa1b2c3d4, 2, 4, 0, 0, 65535, + 105 # raw 802.11 format + )) + +def pcap_addpacket(pcap_file, ts, data): + # ts in seconds, float + pcap_file.write(struct.pack('<IIII', + int(ts), int(1000000 * ts) % 1000000, + len(data), len(data))) + pcap_file.write(data) + +if __name__ == "__main__": + try: + input = sys.argv[1] + pcap = sys.argv[2] + except IndexError: + print "Usage: %s <log file> <pcap file>" % sys.argv[0] + sys.exit(2) + + input_file = open(input, 'r') + pcap_file = open(pcap, 'w') + frame_re = re.compile(r'(([0-9]+.[0-9]{6}):\s*)?nl80211: MLME event frame - hexdump\(len=[0-9]*\):((\s*[0-9a-fA-F]{2})*)') + + write_pcap_header(pcap_file) + + for line in input_file: + m = frame_re.match(line) + if m is None: + continue + if m.group(2): + ts = float(m.group(2)) + else: + ts = 0 + hexdata = m.group(3) + hexdata = hexdata.split() + data = ''.join([chr(int(x, 16)) for x in hexdata]) + pcap_addpacket(pcap_file, ts, data) + + input_file.close() + pcap_file.close() |