SIM PIN unlock

SIM PIN unlock

[Ryan Raasch]

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Hello,

I have noticed a difference of ofono on startup. If the PIN number is 
not required, the daemon never gets past CRSM query, and the remaining 
interfaces are not added.

But if the PIN number has not been entered, things work as they should.

Scenario 1:

The SIM card needs the PIN number to work.

ofonod[8203]: attr_cb got result: 1
ofonod[8203]: Final response: OK
ofonod[8203]: Response line: SIEMENS
ofonod[8203]: at_cpin_cb got result: 1
ofonod[8203]: Final response: OK
ofonod[8203]: Response line: +CPIN: SIM PIN
ofonod[8203]: crsm_pin_cb: SIM PIN
ofonod[8203]: at_crsm_info_cb got result: 0
ofonod[8203]: Final response: ERROR
ofonod[8203]: attr_cb got result: 1
ofonod[8203]: Final response: OK
ofonod[8203]: Response line: MC75
ofonod[8203]: at_crsm_info_cb got result: 0
ofonod[8203]: Final response: ERROR
ofonod[8203]: attr_cb got result: 1
ofonod[8203]: Final response: OK
ofonod[8203]: Response line: REVISION 03.010
ofonod[8203]: at_crsm_info_cb got result: 0
ofonod[8203]: Final response: ERROR
ofonod[8203]: src/voicecall.c:ecc_read_cb() 0
ofonod[8203]: attr_cb got result: 1
ofonod[8203]: Final response: OK
ofonod[8203]: Response line: 35****
ofonod[8203]: at_lock_unlock_cb got result: 1
ofonod[8203]: Final response: OK
ofonod[8203]: at_cpin_cb got result: 1
ofonod[8203]: Final response: OK
ofonod[8203]: Response line: +CPIN: READY
ofonod[8203]: crsm_pin_cb: READY

Scenario 2:

The daemon has been restarted (following correct SIM PIN number insertion).

ofonod[16456]: attr_cb got result: 1
ofonod[16456]: Final response: OK
ofonod[16456]: Response line: SIEMENS
ofonod[16456]: at_cpin_cb got result: 1
ofonod[16456]: Final response: OK
ofonod[16456]: Response line: +CPIN: READY
ofonod[16456]: crsm_pin_cb: READY


Thanks,
Ryan

Re: SIM PIN unlock

[Denis Kenzior]

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Hi Ryan,

> Hello,
>
> I have noticed a difference of ofono on startup. If the PIN number is
> not required, the daemon never gets past CRSM query, and the remaining
> interfaces are not added.

This works fine for other devices.  I would enable at command debugging (export 
OFONO_AT_DEBUG=1) and watch for any signs of breakage.  The MC75 is known to 
have a very bad AT command implementation that might be confusing the AT 
parser.

Regards,
-Denis

Re: SIM PIN unlock

[Ryan Raasch]

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Denis Kenzior wrote:
> Hi Ryan,
> 
>> Hello,
>>
>> I have noticed a difference of ofono on startup. If the PIN number is
>> not required, the daemon never gets past CRSM query, and the remaining
>> interfaces are not added.
> 
> This works fine for other devices.  I would enable at command debugging (export 
> OFONO_AT_DEBUG=1) and watch for any signs of breakage.  The MC75 is known to 
> have a very bad AT command implementation that might be confusing the AT 
> parser.
> 

It seems that if the sim card is unlocked, then the remaining 
"cascading" functions are not called.

query_manufacturer(info);

Got SIM READY

NOT CALLED...
   	query_model(info);
	query_revision(info);
	query_serial(info);


ofonod[3965]: src/sim.c:ofono_sim_add_ready_watch() 0x8eb15b0
ofonod[3965]: src/sim.c:ofono_sim_add_ready_watch() 0x8eb15b0
ofonod[3965]: > AT+CGMI\r
ofonod[3965]: < AT+CGM
ofonod[3965]: < I\r
ofonod[3965]: < \r\nSIEME
ofonod[3965]: < NS
ofonod[3965]: < \r\n\r\nOK\r\n
ofonod[3965]: attr_cb got result: 1
ofonod[3965]: Final response: OK
ofonod[3965]: Response line: SIEMENS
ofonod[3965]: > AT+CPIN?\r
ofonod[3965]: < AT+CPI
ofonod[3965]: < N?\r
ofonod[3965]: < \r\n+CPIN: READY\r\n\r\nO
ofonod[3965]: < K\r
ofonod[3965]: < \n
ofonod[3965]: at_cpin_cb got result: 1
ofonod[3965]: Final response: OK
ofonod[3965]: Response line: +CPIN: READY
ofonod[3965]: crsm_pin_cb: READY
ofonod[3965]: > AT+CRSM=192,28421\r
ofonod[3965]: < AT+CRSM=192
ofonod[3965]: < ,28
ofonod[3965]: < 421\r
ofonod[3965]: < \r\n+CRSM: 144,0,850D00046F05040001FFAA03020
ofonod[3965]: < 000\r\n\r\n
ofonod[3965]: < \r\nOK\r\n

Cheers,
Ryan

> Regards,
> -Denis
> _______________________________________________
> ofono mailing list
> ofono(a)ofono.org
> http://lists.ofono.org/listinfo/ofono

Re: SIM PIN unlock

[Andrzej Zaborowski]

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Hi Ryan,

2009/10/26 Ryan Raasch <ryan.raasch@gmail.com>:
> It seems that if the sim card is unlocked, then the remaining "cascading"
> functions are not called.
>
> query_manufacturer(info);
>
> Got SIM READY
>
> NOT CALLED...
>        query_model(info);
>        query_revision(info);
>        query_serial(info);
>
>
> ofonod[3965]: src/sim.c:ofono_sim_add_ready_watch() 0x8eb15b0
> ofonod[3965]: src/sim.c:ofono_sim_add_ready_watch() 0x8eb15b0
> ofonod[3965]: > AT+CGMI\r
> ofonod[3965]: < AT+CGM
> ofonod[3965]: < I\r
> ofonod[3965]: < \r\nSIEME
> ofonod[3965]: < NS
> ofonod[3965]: < \r\n\r\nOK\r\n
> ofonod[3965]: attr_cb got result: 1
> ofonod[3965]: Final response: OK
> ofonod[3965]: Response line: SIEMENS
> ofonod[3965]: > AT+CPIN?\r
> ofonod[3965]: < AT+CPI
> ofonod[3965]: < N?\r
> ofonod[3965]: < \r\n+CPIN: READY\r\n\r\nO
> ofonod[3965]: < K\r
> ofonod[3965]: < \n
> ofonod[3965]: at_cpin_cb got result: 1
> ofonod[3965]: Final response: OK
> ofonod[3965]: Response line: +CPIN: READY
> ofonod[3965]: crsm_pin_cb: READY
> ofonod[3965]: > AT+CRSM=192,28421\r
> ofonod[3965]: < AT+CRSM=192
> ofonod[3965]: < ,28
> ofonod[3965]: < 421\r
> ofonod[3965]: < \r\n+CRSM: 144,0,850D00046F05040001FFAA03020
> ofonod[3965]: < 000\r\n\r\n
> ofonod[3965]: < \r\nOK\r\n

There seems to be an additional \r\n before the last OK (?).  I'm not
sure how this can result from the PIN request but maybe using the
permissive mode of the parser, like plugin/phonesim.c does, helps (or
not).  You also have echo enabled, shouldn't be a problem but maybe
worth trying without it.

Regards

Re: SIM PIN unlock

[Ryan Raasch]

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Ok. I have narrowed it down a little.

It seems to be the CRSM command reading the
SIM_EFLI_FILEID when it succeeds.

ofonod[6326]: > AT+CRSM=192,28421\r
ofonod[6326]: < \r\n+CRSM: 144,
ofonod[6326]: < 0,850D00046F05040001FFAA03020000\r\n\r\n
ofonod[6326]: < \r\nOK\r\n

goes no further....


HACK:

If I remove

	ofono_sim_read(sim, SIM_EFLI_FILEID,
         	                OFONO_SIM_FILE_STRUCTURE_TRANSPARENT,
                 	        sim_efli_read_cb, sim);

from src/sim.c, the code works, for me.


After i tried the above and it worked, i tried to re-enable the function 
  call above, and put a breakpoint in sim_efli_read_cb(), and the code 
execution never hit there.


NOTE:

After entering the pin code for the sim card, only SIM_EFMSISDN_FILEID 
is read from the sim card, but maybe that is intentional, since it succeeds.


Regards,
Ryan


Andrzej Zaborowski wrote:
> Hi Ryan,
> 
> 2009/10/26 Ryan Raasch <ryan.raasch@gmail.com>:
>> It seems that if the sim card is unlocked, then the remaining "cascading"
>> functions are not called.
>>
>> query_manufacturer(info);
>>
>> Got SIM READY
>>
>> NOT CALLED...
>> Â  Â  Â  Â query_model(info);
>> Â  Â  Â  Â query_revision(info);
>> Â  Â  Â  Â query_serial(info);
>>
>>
>> ofonod[3965]: src/sim.c:ofono_sim_add_ready_watch() 0x8eb15b0
>> ofonod[3965]: src/sim.c:ofono_sim_add_ready_watch() 0x8eb15b0
>> ofonod[3965]: > AT+CGMI\r
>> ofonod[3965]: < AT+CGM
>> ofonod[3965]: < I\r
>> ofonod[3965]: < \r\nSIEME
>> ofonod[3965]: < NS
>> ofonod[3965]: < \r\n\r\nOK\r\n
>> ofonod[3965]: attr_cb got result: 1
>> ofonod[3965]: Final response: OK
>> ofonod[3965]: Response line: SIEMENS
>> ofonod[3965]: > AT+CPIN?\r
>> ofonod[3965]: < AT+CPI
>> ofonod[3965]: < N?\r
>> ofonod[3965]: < \r\n+CPIN: READY\r\n\r\nO
>> ofonod[3965]: < K\r
>> ofonod[3965]: < \n
>> ofonod[3965]: at_cpin_cb got result: 1
>> ofonod[3965]: Final response: OK
>> ofonod[3965]: Response line: +CPIN: READY
>> ofonod[3965]: crsm_pin_cb: READY
>> ofonod[3965]: > AT+CRSM=192,28421\r
>> ofonod[3965]: < AT+CRSM=192
>> ofonod[3965]: < ,28
>> ofonod[3965]: < 421\r
>> ofonod[3965]: < \r\n+CRSM: 144,0,850D00046F05040001FFAA03020
>> ofonod[3965]: < 000\r\n\r\n
>> ofonod[3965]: < \r\nOK\r\n
> 
> There seems to be an additional \r\n before the last OK (?).  I'm not
> sure how this can result from the PIN request but maybe using the
> permissive mode of the parser, like plugin/phonesim.c does, helps (or
> not).  You also have echo enabled, shouldn't be a problem but maybe
> worth trying without it.
> 
> Regards
> _______________________________________________
> ofono mailing list
> ofono(a)ofono.org
> http://lists.ofono.org/listinfo/ofono

Re: SIM PIN unlock

[Denis Kenzior]

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Hi Ryan,

> Ok. I have narrowed it down a little.
>
> It seems to be the CRSM command reading the
> SIM_EFLI_FILEID when it succeeds.
>
> ofonod[6326]: > AT+CRSM=192,28421\r
> ofonod[6326]: < \r\n+CRSM: 144,
> ofonod[6326]: < 0,850D00046F05040001FFAA03020000\r\n\r\n
> ofonod[6326]: < \r\nOK\r\n
>
> goes no further....

The parser is stuck because your modem is spewing garbage.  atgen plugin uses 
the _really_ strict gsmv1 syntax.  I suggest you make a custom driver for your 
device that uses the gsm_permissive syntax.

> 	ofono_sim_read(sim, SIM_EFLI_FILEID,
>          	                OFONO_SIM_FILE_STRUCTURE_TRANSPARENT,
>                  	        sim_efli_read_cb, sim);

This is wrong and won't get you very far as there are about 20 other SIM files 
that we read.

Regards,
-Denis

Re: SIM PIN unlock

[Ryan Raasch]

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Denis Kenzior wrote:
> Hi Ryan,
> 
>> Ok. I have narrowed it down a little.
>>
>> It seems to be the CRSM command reading the
>> SIM_EFLI_FILEID when it succeeds.
>>
>> ofonod[6326]: > AT+CRSM=192,28421\r
>> ofonod[6326]: < \r\n+CRSM: 144,
>> ofonod[6326]: < 0,850D00046F05040001FFAA03020000\r\n\r\n
>> ofonod[6326]: < \r\nOK\r\n
>>
>> goes no further....
> 
> The parser is stuck because your modem is spewing garbage.  atgen plugin uses 
> the _really_ strict gsmv1 syntax.  I suggest you make a custom driver for your 
> device that uses the gsm_permissive syntax.
> 
This worked! Thank you. Could this be another option in modem.conf 
(Syntax=[Permissive,GSM1])?

>> 	ofono_sim_read(sim, SIM_EFLI_FILEID,
>>          	                OFONO_SIM_FILE_STRUCTURE_TRANSPARENT,
>>                  	        sim_efli_read_cb, sim);
> 
> This is wrong and won't get you very far as there are about 20 other SIM files 
> that we read.

I knew it was wrong, it was not a fix, just a localized point where my 
device was failing.


Regards,
Ryan

> 
> Regards,
> -Denis
> 

Re: SIM PIN unlock

[Denis Kenzior]

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Hi Ryan,

> This worked! Thank you. Could this be another option in modem.conf
> (Syntax=[Permissive,GSM1])?

Glad to hear that.

Feel free to send a patch :)

Regards,
-Denis