El día Saturday, March 24, 2012 a las 08:15:53AM +0100, Matthias Apitz escribió:

> now I did some phone call (in/out) and always ciphering was shown and
> enabled:
> 
> fsogsmd.log:2012-03-23T14:47:03.324784Z [INFO]  libfsotransport <0710:3>: 
> URC: [ "%CPRI: 1,2" ]
> fsogsmd.log:2012-03-23T14:48:33.408969Z [INFO]  libfsotransport <0710:3>: 
> URC: [ "%CPRI: 1,2" ]
> fsogsmd.log:2012-03-23T14:50:24.799359Z [INFO]  libfsotransport <0710:3>: 
> URC: [ "%CPRI: 1,2" ]
> 
> now I let the FR suspending and waked it up again; and during the
> re-init of the modem it is set to "do not show encryption" on call, i.e.
> is is switched of with "%CPRI=0":
> 
> fsogsmd.log:2012-03-23T14:52:13.633599Z [INFO]  libfsotransport <0710:3>: 
> SRC: "%CPRI=0" -> [ "OK" ]
> fsogsmd.log:2012-03-23T14:54:09.952246Z [INFO]  libfsotransport <0710:3>: 
> SRC: "%CPRI=0" -> [ "OK" ]
> 
> Why is this?

I searched with fgrep(1) in the installed binaries where this "%CPRI=0"
is located; it is in /usr/lib/cornucopia/modules/fsogsm/modem_ti_calypso.so:

root@om-gta02 /usr/lib/cornucopia/modules/fsogsm # fgrep '%CPRI=' *
modem_ti_calypso.so:%CPRI=1
modem_ti_calypso.so:%CPRI=0

I changed this with a hex editor and now also after suspend/wakeup the
modem is initialized correctly to show the encryption state during
calls;

This should be fixed in the sources; and I will file a bug report in
Trac; 

as a change request remains that the encryption state should be visible
in the desktop while making a call, maybe even as a pop-up message when
the call is not done encrypted, like:

        Call is NOT encrypted!
        Perhaps man-in-the-middle-attack,
        do you really want to continue the call?

Thanks

        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/
UNIX since V7 on PDP-11 | UNIX on mainframe since ESER 1055 (IBM /370)
UNIX on x86 since SVR4.2 UnixWare 2.1.2 | FreeBSD since 2.2.5
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