Commit Graph

138 Commits

Author SHA1 Message Date
Holger Freyther b21b305d7c Fix make distcheck by adding some header files 2009-01-02 02:00:35 +00:00
Holger Freyther 52af7d4284 Write only actual data into the pcap file
The current LAPD control field for indication/disconnect/etc
is wrong and currently we are only interested in the actual
A-Bis data spoken between the BTS and BSC and not on the indication
of the physical line (connection, disconnect, release..)
2009-01-02 01:18:28 +00:00
Holger Freyther 2139b246a0 Attempt to put the time into the pcap packet record 2009-01-02 01:17:48 +00:00
Holger Freyther 9a3ee0ff1b Add the option to write the communication on the D Channel to a pcap file
When using ISDN as network type and using a fake LAPD encapsulation
wireshark should be able to recognize some bits if dump.

Append a dummy LAPD header. It is not clear to me if the Control field
of the LAPD frame is part of the msg or if we need to add it as well.

    - Do the same for the B Channel
    - Write out time
    - Check if more of the LAPD frame needs to be prepended. The
      information from the mISDNhead comes into mind. Maybe it makes
      sense to start a custom wireshark mISDN dissector.
2009-01-02 00:40:15 +00:00
Holger Freyther 355701bcc0 Document where to find the how to determine the paging group
Point to the right location in the pile of spec
2009-01-01 18:02:29 +00:00
Holger Freyther 12aa50d5a2 Change the subscriber and database backend
gsm_subscriber is now refcounted, the db backend is leaking
a lot less, db_get_subscriber will allocate the subscr record
now, subscr_* will look up a subscriber in the list of currently
active subscribers and add an ref to this one.

The db test cases pass, more testing will be when next to the bts
2009-01-01 18:02:05 +00:00
Holger Freyther 67b4b9a017 Do not call rsl_chan_release directly but use the use_count of the lchan
Call use_lchan early in allocate_loc_updating_req, do not directly call
rsl_chan_release but go through channel alloc to take the use_count into
2009-01-01 03:46:11 +00:00
Holger Freyther 3eaa792b21 Speculative fix for not sending LOCATION UPDATING REJECT
As reported by the operator the rejecting didn't work after the
first fix (wrong logic/missing negation). The hypothesis is that
that the lchan was released before the reject timeout was fired.

Fix it by getting a reference on the lchan when allocating a
logical operation and release the reference when the operation
is finished or timed out.
2009-01-01 02:59:03 +00:00
Harald Welte d125250ae2 add signal handlers for clean shutdown of BTS via OML on shutdown of program 2009-01-01 01:50:32 +00:00
Harald Welte e872cb1221 get rid of some more gcc warnings 2009-01-01 00:33:37 +00:00
Harald Welte f85497c857 get rid of gcc warnings about function prototype 2009-01-01 00:33:20 +00:00
Harald Welte 404d816947 add missing string.h include 2009-01-01 00:33:02 +00:00
Harald Welte 21768818f0 don't return a value in a void function 2009-01-01 00:32:49 +00:00
Harald Welte 179f064cbe * fix check for null-pointer in release_loc_updating_req()
* fix endianness of operator name
2008-12-31 23:59:18 +00:00
Holger Freyther dbede4e414 Move the db_test.c to a specific test directory 2008-12-31 23:25:05 +00:00
Holger Freyther 6dbca34bd3 Make the test compile again 2008-12-31 23:24:37 +00:00
Holger Freyther 73487a23da Introduce logical updating request operation on the gsm_lchan
We are going to have logical operations like Phone Call, SMS,
Paging, Updating Request on a logical channel and for each of
these operations we might need to store state. For now pointers
in gsm_lchan look like the best way of doing this and we start
by introducing an operation for the location updating request.

The new flow of things are:
    - We get the location updating request and update/create
      the subscriber and maybe send the identity requests to
      the mobile station
    - We start the updating timer, if it times out we will
      reject the mobile station.
    - Once we get the Identity Responses we have asked for
      and the reject timer did not fire yet we might accept
      the user.
2008-12-31 18:53:57 +00:00
Holger Freyther 41ed300aab We have freed the channel there is no subscriber associated anymore
FIXME: Introduce refcounting on the subscriber record. This looks like
a genuine memory leak to me.
2008-12-31 18:52:54 +00:00
Holger Freyther e97f7fba97 Add an option to set the global reject cause
This will need to be moved into bsc_hack.c together with the
policy to accept/reject a UPDATING LOCATION REQUEST.
2008-12-31 18:52:11 +00:00
Holger Freyther 1bc7de50be Fix the compile the timer got renamed 2008-12-31 18:50:58 +00:00
Holger Freyther c6ea9dbeba Recylce a gsm_lchan when the refcount drops to zero
When a channel is allocated, start a timeout, when a lchan_use
is used the timer will be restarted, when the timeout fires
we will try to recycle or restart the timer.
2008-12-30 19:18:21 +00:00
Holger Freyther 36cbeff164 Document where Channel release is coming from 2008-12-30 19:15:20 +00:00
Holger Freyther 590d66acec Fix the reference. The names and values are described in 9.1 of 04.08 2008-12-30 19:13:13 +00:00
Holger Freyther ea889020e2 Fix indenting... use tabs here 2008-12-30 19:10:47 +00:00
Harald Welte c6ba9c2a97 * 04:08: add MM INFO information elements
* gsm_data: add network name to gsm_network
2008-12-30 18:01:02 +00:00
Harald Welte f5cbab7478 * add network name information to GSM network
* disable callbacks for now
2008-12-30 18:00:15 +00:00
Harald Welte db253af1aa * fix IMSI parsing of last two digits
* add MM INFO packet support and send it after LOCATION ACCEPT
2008-12-30 17:56:55 +00:00
Holger Freyther 89824fc466 Add an option to allow everyone to the network.
This should move out of gsm_04_08 and the accept, reject
policy should be controllable by the higher levels.
2008-12-30 16:18:18 +00:00
Holger Freyther a767794d96 [gsm0408] Add enum values for the LOCATION UPDATING REJECT cause
Convert spec to the enum
2008-12-30 16:18:16 +00:00
Holger Freyther eab55416f8 Fix regression and send the accept message again
I removed gsm48_sendmsg(msg) when removing the send_sms from the
_acc method. This is obviously wrong. Fix the regression, spotted
while testing with LaF0rge. This regression was introduced in r120.
2008-12-30 16:18:15 +00:00
Holger Freyther e6cabf0ba0 Channel opened not from a PAGING COMMAND... remove message 2008-12-30 16:18:14 +00:00
Harald Welte 8c2e36edff use 'ALL YOUR PHONE ARE BELONG TO US' as SMS 2008-12-30 15:00:14 +00:00
Harald Welte b0f4793f90 export debug_flags 2008-12-30 14:59:01 +00:00
Harald Welte 523200b11b update the timestamp in the db 2008-12-30 14:58:44 +00:00
Harald Welte 6cc38d7f79 suppress hexdumps for better console readability 2008-12-30 14:58:19 +00:00
Harald Welte 817f3c8699 add missing return statement 2008-12-30 14:57:59 +00:00
Daniel Willmann e2a728d44b Nothing to see here, move along; 2008-12-30 14:03:09 +00:00
Daniel Willmann 3b3f001269 Change TPDU of welcome message 2008-12-30 13:56:46 +00:00
Holger Freyther 429e77612a Fix documentation so one is finding it in GSM04.08
2008-12-30 13:28:30 +00:00
Holger Freyther b7193e4e94 Introduce new callbacks, remember that we have LOC UPD REQ, reject things only once
gsm_data.h add new callbacks, add some parameters, update bsc_hack and
other call sites.

Remember that we need to ACCEPT/REJECT the LOCATION UPDATE REQUEST and
then send the ACCEPT or schedule the sending of the reject. Currently
it is possible that for a new subscriber that we do not have a !subscbr
yet, we will trigger an IDENTITY REQUEST and schedule the reject timer.
This may lead to rejecting AND accepting (a new subscriber). This issue
is triggered when allowing everyone to connect to the network.
2008-12-29 17:44:08 +00:00
Daniel Willmann fad5d0db83 Regenerate a valid TPDU and send it at first registration 2008-12-29 16:04:14 +00:00
Daniel Willmann a3e2984a4d Send real SMSC no 2008-12-29 16:03:54 +00:00
Holger Freyther 2eafef599c Up on call released release the channel and take the next item
Once a call is released, release the gsm_lchan and move to the
next item in pending_stations or wait for more work.
2008-12-29 06:42:17 +00:00
Holger Freyther abade7af88 Initiate a call once we have a channel assigned 2008-12-29 06:42:15 +00:00
Daniel Willmann 4a1e87928c Add RPDU length 2008-12-29 06:23:56 +00:00
Holger Freyther 88ea832ed7 Unite the acked/nacked handling in a common response... 2008-12-29 06:23:52 +00:00
Holger Freyther 24893de3cb Inform the bsc about acked or nacked channels...
On channel allocation the bsc_hack added a cookie to the lchan on
ack and nack we will take a look and then assume it is the channel
we have allocated. This can be easily exploited by a MS sending fake
responses to paging commands. After the channel has been acked we would
have to ask for the tmsi or find the information on the channel
allocation. For now we will guess.
2008-12-29 06:23:51 +00:00
Holger Freyther 3186bf209a Add callback for allocated lchannels
Currently it is not possible to know for which tmsi the channel
is going to be allocated. The bsc_hack will guess.. in the future
it might be forced to ask for the tmsi after the channel has been
2008-12-29 06:23:49 +00:00
Holger Freyther 86f1812105 Remove duplicate call... semantic should stay the same 2008-12-29 06:23:47 +00:00
Holger Freyther 07cc8d8bee Improve page command handling in the bsc_hack
Add a callback to the gsm_network. When updating the location and
assigning a new tmsi callback into the bsc_hack.c and have a queue
of mobile stations to page, allocate a channel for and ultimately
2008-12-29 06:23:46 +00:00