L1CTL implementation (i.e. l1ctl.c) is not a good place for the
SIM specific stuff. Let's move it to the proper place (i.e. sim.c).
As a bonus, this change fixes a possible problem of loosing the
cached APDUs if two or more L2&3 applications are using a single
LAPDm connection. The APDU buffer is dedicated per MS now.
Change-Id: I564c610e45aa3b630ca5d1ec6bc1cace0dc9c566
Despite the correct range of Timing Advance value is [0..63],
there is a special feature in OsmocomBB which allows one to
simulate the distance between both MS and a BTS by playing
with the signal delay.
It was discovered that l1ctl_tx_param_req() is using an unsigned
'uint8_t' type for Timing Advance value, while other code and
L1CTL protocol is using signed 'int8_t'. This may result in
distortion of negative values, so let's fix this!
Change-Id: I6ee42b5fa2ca9ebe187f0b933465c49f840a55c2
When starting multiple mobile in the same second, the libc random number
generator will be seeded to exactly the same value.
The random bits inside the RACH request(s) will be exactly the same
across multiple mobile and when the channel fails they all pick the same
randomized back-off timing.
Use stronger random numbers and replace all calls to random(2) with
osmo_get_rand_id. Add a fallback to try random().
[v2: Add helper to make sure the result is int and between 0 and
RAND_MAX]
Change-Id: Icdd4be88c62bba1e9d954568e48f0c12a67ac182
Disable storing the SMS on disk. This is useful when scripting mobile.
Keep the default of attempting to store it to disk.
Change-Id: I6353447343d98ebaa5e12ab63f995750f81c8500
When no cell was found during the PLMN search the camp on any cell
state will be entered. LUs are prevented in this state and it will be
left after the start_any_timer has timedout. Even if camping on the
home network the state will not be left before the expiry of the timer.
For systematic tests this is producing a too high upper bound. Make it
configurable so we can succeed with a UL more quickly.
Change-Id: I25bc985cd4360d5e37d05a7b16b39eefb75ce20f
Previously, the L1CTL_CRYPTO_REQ message contained only a ciphering
algorithm and actual Kc key to be used. The key length was
calculated manually using the MSGB API.
Let's avoid manual calculations here, as it may cause unexpected
behavior if the message structure is changed. Also, let's fill
the UL header with minimal information about a channel, which
is going to be encrypted.
Change-Id: I5fab079907c5276322d3ec2b46cab81f10c7ed09
Make this symmetric and send the SMS through the primitive
interface. Construct and copy the sms into the prim, store
the SCA in the prim as well. In 04.11 we see we can store
2*10 digits in the destination address and a NUL.
Change-Id: I91d7537f4f6ce5ba00218c58f3456947ec7bc662
Make the MS the script is associated with accessible to lua. Provide
access to IMSI and IMEI. The IMSI might not be available at the given
time and just return an empty string.
Example lua usage:
print(osmo.ms():imsi());
print(osmo.ms():imei());
print(osmo.ms():shutdown_state())
print(osmo.ms():started())
function ms_started_cb(started)
print("MS started", started)
end
function ms_shutdown_cb(old_state, new_state)
print("MS shutdown", old_state, "->", new_state)
end
function sms_cb(sms, cause, valid)
print("SMS data cb", sms, cause, valid)
for i, v in pairs(sms) do
print(i, v)
end
end
function mm_cb(new_state, new_substate, old_substate)
if new_state == 19 and new_substate == 1 then
osmo.ms():sms_send_simple("1234", "21321324", "fooooooo", 23)
end
end
local cbs = {
Started=ms_started_cb,
Shutdown=ms_shutdown_cb,
Sms=sms_cb,
Mm=mm_cb
}
timer = osmo.timeout(20, function()
print("Timeout occurred after 20s")
end)
osmo.ms():register(cbs)
# Can fail. Best to wait for state changes...
print(osmo.ms().start())
print(osmo.ms().stop(true))
Change-Id: Ia3ace33d6ba4e904b1ff8e271a02d67777334a58
Right now the script will be executed once it is loaded. Make sure
to write it into the config file last. Expose various log commands
for logging. Jump through some hoops and get the filename and line
number from lua.
Change-Id: I456f6b6b5e1a14ed6c8cb0dcc5140093d3c61ef6
Notify once the mm state has been changed. Unfortunaley one state
transition can immediately trigger more transitions (recursively).
In the mid-term it might be best to force all primitives to be
async to avoid unpredictable behavior (e.g. make a shutdown while
being a recursion down?)
Change-Id: I8e9dcf7fd9116985aa060ba027ba74107a19223a
Forward started/shutdown changes to the primitive layer which will
turn them into indications. The other option might be to use the
signals but it seems primitives are a superset of the signals.
The notify will be done per MS and then the right primitive
instance will be searched and the indication be sent. The approach
will be applied to other systems as well.
The signal framework might be seen as
a subset of the primitives A signal mostly being a different form
of an indication.
Change-Id: I5df20a4ab79c06b515780675b6df2929aa976f0d
We want the script interface to interface through a primitive
interface. This will allow to move it to a different thread or
a process in the future. The script interface will just use the
primitives.
It is not clear how "sap" will be used here. I am keeping it
at 0 right now. The first primitive is starting a timer with a
request and then getting an indication as a response.
Change-Id: Id2456b7fae35546553c4805f12a40c0812d9255c
Move the check if within the mobile app there is no other active
MS using the same L1 socket. This way we can call this function
from the primitive code as well.
Change-Id: Ib4aa5ff212fa6bead8f620abaecc6a0b51a99fec
In file included from settings.c:27:0:
../../include/osmocom/bb/mobile/app_mobile.h:10:42: warning: ‘struct osmocom_ms’ declared inside parameter list will not be visible outside of this definition or declaration
int l23_app_init(int (*mncc_recv)(struct osmocom_ms *ms, int, void *),
^~~~~~~~~~
../../include/osmocom/bb/mobile/app_mobile.h:14:26: warning: ‘struct osmocom_ms’ declared inside parameter list will not be visible outside of this definition or declaration
int mobile_delete(struct osmocom_ms *ms, int force);
Change-Id: I9348b3ed71a8490c03edda954402ab954f645b7c
In I4bac5f06921b5fd85a98d97770d42d4858ca1c42 I have removed the
msg_ref field. But in case we delete a transaction with a pending
SMS we need to get the msg_ref from somewhere. This is a partial
revert but for RX SMS it makes sure that msg_ref will be set (it
wasn't set before).
Change-Id: I9b0f90f875de5f072565878861d38b0bb3bfbded
It seemed like msg_ref could go out of sync. In some places we are
using sms->msg_ref in other cases we pass it as parameter (e.g. when
sending the SMS) or we get it out of the gsm411_rp_hdr.
Instead of hardcoding 42 for all messages make it configurable and
pass the parameter from the caller.
Change-Id: I4bac5f06921b5fd85a98d97770d42d4858ca1c42
Instead of changing the field all over the place, do the state
change in a function. This will allow us to emit a notification
when things change. It is similar to the lchan_state.
Change-Id: I6a0591bb2785232681b23e41368323f16d3c960c
The enum was created to understand the different states during
the shutdown and find places where it is used. The normal
transitions are like.
Idle -> Imsi Detach -> L1 Reset -> Done
Idle -> L1 Reset -> Done
The shutdown can get stuck in case:
* Out of memory situation while handling IMSI detach (timeout)
* Never receiving l1 reset acknnowledgment.
The code could benefit from the move to osmo fsm to deal with
proper timeouts.
Change-Id: Iee1140e4848923c7270495c381bf87b7e3fddee1
The state handling is complicated and maybe it gets better by
moving started to bool and then the rest to an enum.
Change-Id: I6aef22e7bf954a8a4ecda980c2c558eb8c9180b7
Add a mobile application logging category and replace printf with
a LOGP. The code is sadly still using exit in the middle of handling.
Change-Id: I71e7f6e6375a485b45bad76ada2be17b0901577d
As we use talloc, it's absurdly not to use the main feature of
the library - hierarchical memory management. This change sets
talloc context of all sub-allocated objects to related osmocom_ms
instance. So, as soon as osmocom_ms instance is destroyed, all
sub-allocated chunks are getting destroyed too.
Change-Id: I6e3467ff739f3e6dc8dd60cc6d1fcd3f8e490ce9
According to the vty_app_info struct definition, the go_parent_cb()
should return an integer, but not enum. So, this change fixes the
following compiler warning:
> warning: initialization from incompatible pointer type
> .go_parent_cb = ms_vty_go_parent,
Change-Id: Ib55e43eaaebdd9fe0d74a030b1057ae82804a77e
The approach of talloc memory management reduces memory usage,
and prevents some buffer overflows, which were possible before.
Change-Id: Icd6706117fdd7f1b3481b0e3817bbb3b31f12f60
1) Now the SAP interface is selectable as SIM source using the 'sim sap'
command in VTY.
2) SAP connection starts only if it is configured as SIM source.
3) Fixed sap_socket_path configuration r/w errors.
Written-by: Яницкий Ва дим <axilirator@gmail.com>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
All levels in range of 0..63 are now uint8_t and use "rxlev" as
variable name. All levels in range of -110..-47 are now int8_t and use
"rxlev_dbm" as variable name.
As Dieter points out, this drastically improves the resiliance to high
receive levels on the C155. We cannot blindly assume a received signal
level of -85 dBm if the BTS is 2m away and we actually receive -40 dBm.
This patch extends the L1CTL_FBSB_REQ data structure in layer 1 with the
respective field, as well as the l1ctl_tx_fbsb_req() API function called
from the various layer23 apps.
"mobile" and "bcch_scan" already did a PM request and thus know the
expected signal power. "ccch_scan" and "cbch_sniff" apparently don't
do, so the -85 dBm constant is now hardcoded into the host-side source
code there, and should probably be fixed in a follow-up patch.
We use 1 second on FACCH and 2 seconds on SACCH when SMS is transfered
during a call on TCH. There is no impact on bandwidth, because SAPIs use
differen channels.
In order to correctly transfer SMS during SDCCH, the T200 must be raised
from 1 (SAPI 0) to 2 (SAPI 0 and 3), so T200 will not timeout before
receiving acknowledge from BTS. This is because both SAPIs share the same
ressource on SDCCH. After release of SAPI 3, T200 is lowered back to 1.
libosmocore has changed its LAI decoding from hex to decimal. This caused
wrong decoding of MCC and MNC. In order to provide required hex
transcoding, special hex encoding and decoding function are added to
mobile/sysinfo.c.
Use VTY to request your extension number form OpenBSC:
en
service 1 *100#
Written-by: Andreas Eversberg <jolly@eversberg.eu>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
In case the SMS Service Center Address is not set in the config, the
Address from the SIM card is used. The mobile checks if either one is
defined, otherwise it will refuse sending SMS.
Since records of SIM are read, this patch includes fixes to talk
correctly with the SIM client.
Written-by: Andreas Eversberg <jolly@eversberg.eu>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Both MO and MT SMS are supported.
Transmission an reception can be controlled via VTY:
en
sms 1 <destination> <text>
All received SMS are stored in "~/.osmocom/bb/sms.txt".
SMS transmission is performed on SAPI 3 datalink, using DCCH or ACCH.
Written-by: Andreas Eversberg <jolly@eversberg.eu>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
RR now handles SAPI 3 datalink.
MM connections now have and individual sapi, so MM can use right SAPI
for communication with other layers, as well as releasing the right
MM connections in case of link release.
Written-by: Andreas Eversberg <jolly@eversberg.eu>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Since libosmocore already has LAPDm implementation, we don't need the
local copy of LAPDm code anymore.
Written-by: Andreas Eversberg <jolly@eversberg.eu>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
In case we got paged with IMSI, but even if we have a valid TMSI, we need to
respond with IMSI, because the network may not know our TMSI anymore.
Written-by: Andreas Eversberg <jolly@eversberg.eu>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Max
Sylvain Munaut
Harald Welte