Implemented the core API's needed for sim-auth:
list_apps: already implemented
open_channel: Opens a logical channel with +CCHO
close_channel: Closes logical channel with +CCHC
logical_access: Access an opened channel with +CGLA
==2941== Invalid read of size 4
==2941== at 0x69338: sim_state_cb (sim.c:1301)
==2941== by 0x71DCB: cpin_check_cb (atutil.c:567)
==2941== by 0xA602B: at_chat_finish_command (gatchat.c:459)
==2941== by 0xA6277: at_chat_handle_command_response (gatchat.c:521)
==2941== by 0xA6587: have_line (gatchat.c:600)
==2941== by 0xA6BB7: new_bytes (gatchat.c:759)
==2941== by 0xAAFAF: received_data (gatio.c:124)
==2941== by 0x4AF606F: g_main_dispatch (gmain.c:3154)
==2941== by 0x4AF606F: g_main_context_dispatch (gmain.c:3769)
==2941== by 0x4AF658F: g_main_loop_run (gmain.c:4034)
==2941== by 0xBDDBB: main (main.c:261)
==2941== Address 0x519c344 is 4 bytes inside a block of size 12 free'd
==2941== at 0x4840B28: free (vg_replace_malloc.c:530)
==2941== by 0x71F33: at_util_sim_state_query_free (atutil.c:613)
==2941== by 0x6930B: sim_state_cb (sim.c:1297)
==2941== by 0x71DCB: cpin_check_cb (atutil.c:567)
==2941== by 0xA602B: at_chat_finish_command (gatchat.c:459)
==2941== by 0xA6277: at_chat_handle_command_response (gatchat.c:521)
==2941== by 0xA6587: have_line (gatchat.c:600)
==2941== by 0xA6BB7: new_bytes (gatchat.c:759)
==2941== by 0xAAFAF: received_data (gatio.c:124)
==2941== by 0x4AF606F: g_main_dispatch (gmain.c:3154)
==2941== by 0x4AF606F: g_main_context_dispatch (gmain.c:3769)
==2941== by 0x4AF658F: g_main_loop_run (gmain.c:4034)
==2941== by 0xBDDBB: main (main.c:261)
Add support for automatic context activation by adding read_settings.
It also adds detach_shutdown to make sure context is cleaned up when
network registration is lost.
Previously, these drivers would check /sys/devices/virtual/misc/tun to
see if TUN is supported, and bail out otherwise. However, the tun module
can sometimes be autoloaded by opening the /dev/net/tun file. In this
case the /dev file already exists, but the /sys file only gets created
after the modul is loaded.
Additionally, the ppp code does not use the /sys file, but only the
/dev file, so checking for the existence of the latter seems a better
indicator of expected success.
SMS reception is not working for Gemalto modems because of +CMT parsing.
PDU length is the first argument of +CMT URCs in Gemalto modems.
Add a switch case on vendor info to handle Gemalto case.
Also handle acknowledgment, +CNMA takes only one parameter.
CMT parsing is moved from at_parse_cmt() to at_cmt_notify(). This
function is modified to match the style of at_cmgr_notify() and it
includes a switch case for CINTERION modems.
Telit AT modem firmware (tested with UE910-EUR) generates
+CGREG: 0\r\n\r\n+CGEV: NW DETACH
after a context is de-activated and ppp connection closed.
Then, after a random amount of time (observed from a few seconds
to a few hours), an unsolicited +CGREG: 1 arrives.
Attempt to fix the problem, by sending AT+CGATT=1 once.
This does not re-activate the context, but if a network connection
is still correct, will generate an immediate +CGREG: 1.
Some modems do not support AT+CGDATA="PPP",X to enter data state.
Use AT+CGDATA=? to detect these modems and for them use ATD*99***X#
to enter data state.
CGDCONT result parsing fails if first list contains several ranges. For
example with modem Cinterion PHS8:
AT+CGDCONT=?
+CGDCONT: (1-17,101-116),"IP",,,(0),(0-4)
Solution: read first range and jump to second list instead of trying to
close the brackets.
Besides exceptions below, act like normal U-Blox devices.
gprs-context: don't set auth for TOBY L2. U-Blox Toby L2
doesn't support PAP/CHAP APN auth method.
atmodem: TOBY L2 supports only CMER mode 1. Also chaged original
mode variable to ind, which is a more appropriate name.
mode is what is being set first.
The SIM900 module from SIMCOM does have a AT+CGDATA command.
However, it is not possible to make a ppp connection when CGDATA
has been used to bring up the gprs context.
This patch adds a quirk that uses the alternative ATD*99***<cid>#
command instead.
Especially for Telit HE910 it is not enough to wait for
entering a PIN code.
If we do not wait for #QSS: 3, subsequent commands,
like +CMER will report SIM BUSY and the network registration
atom will be removed as a consequence.
If device probe and removal happen in short succession, it's possible
that the idle handler registered in the probe function doesn't run before
the device is removed. In this case, the idle handler needs to be
unregistered so that it does not run and try to access the data that's
destroyed during the removal.
We might have mis-interpreted how 27.007 intends for CBS to work. After
studying the implementation notes of the IMC 6260 modem, the spec intent
made a little bit more sense.
Slava Monich
James Prestwood
Ankit Navik
Christophe Ronco
Matthijs Kooijman
Marcel Holtmann
Vincent Cesson
Lukasz Nowak
Piotr Haber
Marko Šulejić
Denis Kenzior
John Ernberg
Dragos Tatulea
Alex J Lennon
Cedric Jehasse
Philip Paeps
Anthony Viallard
Jesper Larsen
Christopher Vogl
Daniel Wagner
Mingli Wu