20 Jan
2018
20 Jan
'18
9:15 p.m.
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http://cgit.osmocom.org/osmocom-bb/commit/?id=ab7eb390cba51809b81d7fa41f5ec…
commit ab7eb390cba51809b81d7fa41f5ecd5755e0b609
Author: Vadim Yanitskiy <axilirator(a)gmail.com>
Date: Sun Jan 21 01:49:27 2018 +0600
fake_trx: implement a new tool for TRX protocol sniffing
This change introduces a new tool, which could be used to sniff a
single connection between L1 and TRX in both directions, filter
captured bursts by direction, timeslot and/or frame number, and
finally write them to a binary file for further analysis.
Sniffing capability is based on Scapy framework, so it should
be installed in order to run this tool. Please also note,
that sniffing requires root access. For details, see:
https://github.com/secdev/scapy
https://scapy.readthedocs.io/en/latest/
Usage example:
sudo ./trx_sniff --frame-count 30 --timeslot 2 -o /tmp/bursts
This command will capture 30 frames on timeslot number 2, and
write them to a binary file. The format of this file is based
on TLV (Tag Length Value), that wraps each burst:
... |-TAG (byte)-|-LEN (byte)-|-BURST (LEN bytes)-| ...
TAG 0x01 - a message coming from L1 to TRX
TAG 0x02 - a message coming from TRX to L1
Change-Id: I6e65e1d657574cc3e67bc7cdb1c01ef6bf08ecde
http://cgit.osmocom.org/osmocom-bb/commit/?id=32462cfd62a25a461d36845e546f1…
commit 32462cfd62a25a461d36845e546f150bd8ca0e97
Author: Vadim Yanitskiy <axilirator(a)gmail.com>
Date: Sat Jan 20 16:44:19 2018 +0600
fake_trx/burst_send.py: indicate actual burst source
Change-Id: I7e45996f4a7a2aacc962ff9b65107c6b04e7bf68
-----------------------------------------------------------------------
Summary of changes:
src/target/fake_trx/README | 6 +
src/target/fake_trx/burst_send.py | 2 +
src/target/fake_trx/trx_sniff.py | 318 ++++++++++++++++++++++++++++++++++++++
3 files changed, 326 insertions(+)
create mode 100755 src/target/fake_trx/trx_sniff.py
hooks/post-receive
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The Open Source GSM Base Band stack