El día Monday, July 04, 2011 a las 09:35:24AM +0300, Timo Juhani Lindfors
escribió:
Matthias Apitz g...@unixarea.de writes:
Is the FR capable to show that the call runs in non encrypted mode
because the BS forced the ME to this mode? The question is for Om2008.9
but as well valid for any other distribution running on the FR.
I think the GSM part (Calypso) delivers this information in the AT%CPRI
message. With ogsmd (part of the python version of fso-frameworkd) I
have lines like
Jul 3 11:57:43 ginger org.freesmartphone.GSM.Network.CypherStatus: enabled:
unknown
in /var/log/syslog.
om2008.9 does not use ogsmd afaik but gsmd.
I did some tests sending down AT-cmds with the 'chat' command
and watching the AT chatting in /var/log/messages:
Per default it is set to off:
root@om-gta02:~# chat -vs /dev/ttySAC0 /dev/ttySAC0 '' 'AT%CPRI?'
Jul 5 07:39:50 om-gta02 local2.info chat[1556]: send (AT%CPRI?^M)
Jul 5 07:39:50 om-gta02 user.notice root: AtChat : ? : %CPRI: 0
Jul 5 07:39:50 om-gta02 user.notice root: AtChat : ? : OK
Then I switched it on with:
root@om-gta02:~# chat -vs /dev/ttySAC0 /dev/ttySAC0 '' 'AT%CPRI=1'
which gives in the /var/log/messages:
Jul 5 07:41:37 om-gta02 local2.info chat[1557]: send (AT%CPRI=1^M)
Jul 5 07:41:37 om-gta02 user.notice root: AtChat : ? : OK
then I dialed a number:
Jul 5 07:43:49 om-gta02 user.notice root: AtChat : T : ATD089;
Jul 5 07:43:51 om-gta02 user.notice root: AtChat : N : +CSSI: 1
Jul 5 07:44:17 om-gta02 user.notice root: AtChat : F : OK
Jul 5 07:44:17 om-gta02 user.notice root: Modem :
QModemCall::dialRequestDone()
Jul 5 07:44:17 om-gta02 user.notice root: AtChat : T : AT+CLCC
Jul 5 07:44:17 om-gta02 user.notice root: AtChat : F : %CPRI: 1,2
Jul 5 07:44:17 om-gta02 user.notice root: AtChat : F : OK
Jul 5 07:44:17 om-gta02 user.notice root: Modem : dialing was ok, we are
connected
Jul 5 07:44:23 om-gta02 user.notice root: Modem : QModemCall::hangup()
Jul 5 07:44:23 om-gta02 user.notice root: AtChat : T : AT+CHLD=1
Jul 5 07:44:23 om-gta02 user.notice root: Modem : hangup groups
Jul 5 07:44:23 om-gta02 user.notice root: AtChat : F : OK
as you see, one of the result code of the TE is %CPRI: 1,2, where the
'1' is for GSM (ciphering enabled) and the '2' for GPRS (ciphering state
not applicable), see also page 167 for the values in
http://www.cartft.com/support_db/support_files/CTFPND-3_AT_Command_Reference.pdf
with a bit of tweaking, at least this information is visible in the log
files if the connection is ciphered or not.
HIH
matthias
--
Matthias Apitz
t +49-89-61308 351 - f +49-89-61308 399 - m +49-170-4527211
e g...@unixarea.de - w http://www.unixarea.de/
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