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2017-02-27SGSN: Integrate support for UMTS AKANeels Hofmeyr1-0/+1
The general infrastructure for UMTS AKA is already in place: * GSUP with capability to send us auth_vectors that contain either triplets or quintuples * mm_context that holds such auth_vectors Add: * capability to send UMTS AUTN in GMM AUTH REQ * parse extended UMTS RES * on auth response, validate expected AKA with vector and received res/sres * add Auth Failure message to receive resync AUTS token and * send to HLR * clear out-of-sync auth tuple * enter new state for when we're waiting for HLR to resync and send new tuples so that the next Auth Request will be handled Original first half of this patch by: Harald Welte <laforge@gnumonks.org> Full UMTS AKA procedure including AUTS resync tested to work against OsmoHLR with R99 USIM and Milenage algorithm. The sgsn_test.c needs adjustment because we're checking the vector's auth_types now. Depends: libosmocore change-ids I277fb3d407396dffa5c07a9c5454d87a415d393f If943731a78089f0aac3d55245de80596d01314a4 Related: OS#1956 Change-Id: Ie6a0cefba5e4e7f02cc2eaf6ec006ac07d5c1816
2017-02-25add struct gprs_subscr, separating gprs from gsm_subscriberNeels Hofmeyr2-40/+61
Prepare for replacing gsm_subscriber with vlr_subscriber. vlr_subscriber will not make sense to be used in gprs, so have a dedicated GPRS subscriber struct. (Could change if the gprs code were to use libvlr; is currently independent). Related: OS#1592 Change-Id: Ia8b391ee009c8545763cba04505be3947835120e
2017-02-21Handle DSD from HLRMax1-1/+2
Handle Delete Subscriber Data GSUP message from HLR to disable Packet Services for a given IMSI. Change-Id: I6b9b494fa58bcb95bd550c49f8204f00f8fdf628 Related: OS#1645
2017-02-07gprs/sgsn: rename sgsn_mm_ctx_alloc() -> sgsn_mm_ctx_alloc_gb()Alexander Couzens1-1/+1
Postfix the ran type to clarify the purpose. Because of the new support of the Iu ran type, there are 2 functions to allocate a mm ctx. For Iu it's sgsn_mm_ctx_alloc_iu(). For gb it should be named in the same way. Change-Id: Ic49009e8c20c12308855e1409c09004698c79b95
2017-02-07gprs/sgsn: rename gprs->mm_state -> gmm_stateAlexander Couzens1-23/+23
GMM is the right term. MM state is already occupied. Change-Id: I9cfdcf921e4ebd14a5e7ce7489ec4ce5d1f5515f
2017-01-23cosmetic: use osmo_strlcpy() everywhereNeels Hofmeyr1-3/+3
Shorten some code and make obvious to the reader that the string copy is done in a safe way. Change-Id: I900726cf06d34128db22a3d3d911ee0d1423b1bd
2017-01-23fix strncpy() invocation in vty_interface_layer3.c and 3 testsNeels Hofmeyr1-1/+2
Use osmo_strlcpy() to fix unsafe invocation of strncpy(), which potentially left the result unterminated. Change-Id: I1a119b1760a3e3262538b4b012d476fdce505482
2016-12-13move grps_gsup_client.c to libcommon/gsup_client.cNeels Hofmeyr1-1/+0
This is in preparation for libvlr. Related: OS#1592 Change-Id: I9ad7dc7f17f3b033c779de9ae8bc120655502fce
2016-12-13move gprs/oap.c to libcommon/oap_client.cNeels Hofmeyr1-1/+0
This is in preparation for libvlr. Related: OS#1592 Change-Id: Ib526df6d9de55a1e59a379d5e2c8541ed0ef67e3
2016-12-13move OAP messages implementations to libosmocoreHarald Welte1-1/+0
This corresponds to change-id If5099e60681a215e798b6675f21813f26769c253 in libosmocore, which is now required to build openbsc. Related: OS#1592 Change-Id: I2f06aaa6eb54eafa860cfed8e72e41d82ff1c4cf
2016-12-13rename gprs_gsup_client.h to gsup_client.hNeels Hofmeyr1-1/+1
This is in preparation for moving gsup to libcommon, which is in turn preparation for libvlr. Related: OS#1592 Change-Id: I9c95d00f1a9420887a44c938b1d0ee3e20586f4c
2016-12-13gprs_gsup_client*: remove the gprs_ prefixNeels Hofmeyr2-15/+15
Make sure everything is named gsup_client_ / GSUP_CLIENT_. Rename static gsup_client_send() to client_send() to avoid clash with public gprs_gsup_client_send() being renamed to gsup_client_send(). This is in preparation for moving gsup to libcommon, which is in turn preparation for libvlr. libvlr and osmo-sgsn will use the same GSUP client code. A number of patches will follow up on this, also for the the OAP client. Related: OS#1592 Change-Id: I57433973b1c4f6cc1e12e7b1c96b5f719f418b51
2016-12-13Revert "Support Deactivate PDP Context Request from network"Neels Hofmeyr2-140/+0
This reverts commit 1611df5226199da2bf2fba3d22d93cc1a6c6c777. This is due to a segfault introduced to the asan build only. See: http://lists.osmocom.org/pipermail/openbsc/2016-December/009966.html Subject: new sanitizer breakage: SIGSEGV in sgsn_create_pdp_ctx() Date: Tue Dec 13 12:08:32 UTC 2016 Change-Id: Ic926c0e6778947b516994822e3a21d4fde25bb02
2016-12-12Support Deactivate PDP Context Request from networkPravin Kumarvel2-0/+140
Enable Deactivate PDP context based on the IMSI of the subscriber. When there are PDP contexts present for a MM context, PDP context will be deactivated along with GMM Detach(MM context deletion). If there are no PDP present, MM context will be deleted to avoid further PDP context request from the MS. Test cases is added to check this functionality. Change-Id: Ia0a41aa2218ec2fda4ea17a37c8cc55cba63dd13
2016-12-09sgsn_test: Fix missing = in == type checkHarald Welte1-1/+1
Change-Id: I696a7d25d2f4d19922e05a7e83c4aeec5c44fb07 Fixes: Coverity CID 135156
2016-10-13msgb ctx: use new msgb_talloc_ctx_init(), don't access talloc_msgb_ctxNeels Hofmeyr1-4/+3
Drop extern definitions of talloc_msgb_ctx and use msgb_talloc_ctx_init() instead. In sgsn_test.c, use a local variable msgb_ctx to do the talloc report from the return value of msgb_talloc_ctx_init(). Change-Id: I2f9ace855f0ecbdc9adf5d75bcb1a3d666570de4
2016-09-24SNDCP: add V.42bis data compression functionalityPhilipp1-0/+1
- Add compression control for V.42bis Add code to handle compression (gprs_sndcp_dcomp.c/h) - Add Adjustments in SNDCP - Add VTY commands Change-Id: I6d36cbdf2f5c5f83ca9ba57c70452f02b8582e7e
2016-09-24V.42bis: integration and unit testPhilipp1-0/+1
- Edit previously committed V.42bis implementation to function outside IAXmodem. - Add unit test to verify the correct function of V.42bis Change-Id: I689413f2541b6def0625ce6bd96f1f488f05f99d
2016-09-24SNDCP: add RFC1144 header compression functionalityPhilipp1-0/+2
- Add module to handle compression entities - Add module to control header compression - Introduce VTY commands for heade compression configuration - Add changes in sndcp and llc to integrate header compression Change-Id: Ia00260dc09978844c2865957b4d43000b78b5e43
2016-09-24RFC1144: integration and unit-testPhilipp1-0/+1
The previously pushed slhc implementation has been modified to compile and function outside of the kernel. Also debug log messages were added and datatypes ware matched. The implementation is now ready to be used Change-Id: I7a638e88a43b3eb9d006751a03ef2570e36613f0
2016-09-24SNDCP: add SNDCP-XID encoder/decoder and unit testPhilipp1-1/+4
The SNDCP-XID (or layer-3 xid) is used to exchange layer-3 parameters such as compression. The encoder encodes a bytestream that is then sent as regular XID field from LLC. We will need the SNDCP-XID to negotiate the parameters for our upcomming GPRS data and header compression features Change-Id: If2d63fe2550864cafef3156b1dc0629037c49c1e
2016-09-15Build fixesAlexander Huemer1-1/+2
Some fixes for build environments where dependencies are installed in distinct directories. Change-Id: I38808fd2911747b266ee6fde91187a88dd7ae355
2016-09-15Consistenly format variables in */Makefile.am filesAlexander Huemer1-11/+35
Change-Id: Ifa21513c007072314097b7bec188579972dc1694
2016-09-01IuPS: redirect Iu in various places, link Iu in sgsn-testDaniel Willmann1-0/+10
In gsm48_gmm_sendmsg(), redirect to iu_tx() for both cases of MM context present or not. In gsm48_rx_gmm_att_req(), compose an MM context marked as Iu for messages coming in from a ue_conn_ctx (passed in msg->dst). Also make sure cid is initialized to avoid introducing a compiler warning. In gsm48_rx_gmm_ra_upd_req(), look up an Iu MM context based on the presence of the ue_conn_ctx in msg->dst. In sgsn-test, add libiu and libasn1c, libosmo-sigtran, libosmo-ranap, which are now needed for an --enable-iu build. Change-Id: Ia47ffbfa6fa0f5a0cd76a379c57ef42faa0d80e3
2016-08-27Adding LLC-XID related modifications in LLCPhilipp1-0/+1
With this commit the already existing XID mechanism has been modified to suit the needs for the upcomming SNDCP-XID patches. This commit should not break anything since it does not alter the current behaviour (incoming XID is still just echoed, on GMM-Reset a basic XID message is still echoed) Change-Id: I65b9d625e72d3d61c99abdc7041773701d694d52
2016-07-25sgsn: add statistics counter for GPRS and PDP packetsAlexander Couzens1-1/+2
Changing the test to allow still allocated block from the rate counters. Change-Id: Ie30e4c3084ee3a138d6b39bb5000234ac814e65f
2016-07-16SGSN: encrypt/decrypt only necessary framesMax1-1/+1
According to 3GPP TS 24.008 § 4.7.1.2 some GMM frames are not supposed to be ciphered. Propagate information about the necessity for encryption between MM <-> LLC to ensure only proper frames are encrypted/decrypted/dropped. Change-Id: I0358905e60d1b182f75caec81bfcc72bbbbb2aa1 Related: OS#1582
2016-07-16SGSN: use unique AUTH REQ referenceMax2-0/+20
The A&C reference number specified in 3GPP TS 24.008 § 10.5.5.19 identifies particular request sent by network with the related response sent by MS. The value transparently copied from request to response by MS: the spec do not specify what exactly should be in there so we use rand() to decrease chance for collisions. Note: variable named 'rand' clashes with standard function rand() so it was renamed. Change-Id: I3638821a9b4a0532b28dbbb50faa30c4082579f6 Related: OS#1582
2016-07-04SGSN: move TLLI unassignment into separate functionMax1-1/+1
Change-Id: Ia4df145ab03ebcaad70a13601cff60c488a5de54 Related: OS#1582
2016-06-20typo in sgsn_testNeels Hofmeyr2-2/+2
(committing just to test gerrit, if it goes through it's still a valid change) Change-Id: I3291ea2da99cd7f0e2f340b0e6fd6022d088beb8
2016-06-02rename gsm0408_gprs_rcvmsg() to gsm0408_gprs_rcvmsg_gb()Harald Welte1-1/+1
This is the entry point for GMM from Gb. We will create a new one for Iu, so let's be explicit rather than implicit. Change-Id: I93c074bf99db041117c0dc03dc8255879845a875
2016-06-01prepare sgsn_mm_ctx for Gb and Iu mode (UMTS)Harald Welte1-29/+29
Explicitly mark those sgsn_mm_ctx members that apply for Gb mode and (upcoming) Iu mode, respectively. Add some comments in sgsn_mm_ctx. Change-Id: Ife9b02549f284e2547f16117cf43d7a36948fc4b Tweaked-By: Neels Hofmeyr <nhofmeyr@sysmocom.de>
2016-05-06sgsn_test: Adapt test case to now-existing InsertSubscriberDataHarald Welte1-2/+2
We recently implementd InsertSubscriberData in the SGSN, adapt the test to reflect that.
2016-04-29Move osmo_gsup_messages.[ch] to libosmocoreHarald Welte2-10/+9
This requires the corresponding commit in libosmocore.
2016-04-29move gsm_04_08_gprs.h to libosmocoreHarald Welte2-2/+0
This requres the corresponding commit in libosmocore.
2016-04-29Start to use struct osmo_auth_vector from gsm_auth_tupleHarald Welte1-1/+1
Rather than having a 'private' structure for kc, sres and rand, we now finally (with 4 years delay) use osmo_auth_vector from libosmogsm, which encapsulates authentication vectors that can be either GSM triplets or UMTS quintuples or a combination of both. gsm_auth_tuple becomes a wrapper around osmo_auth_vector, adding use_count and key_seq to it. key_seq is no longer initialized inside gprs_gsup_messages.c, as there is no CKSN / key_seq inside the message anyway. If a usre of the code needs key_seq, they need to manage it themselves.
2016-02-22sgsn: Re-add searching for MM ctx based on TLLI / P-TMSI matchesJacob Erlbeck2-45/+2
If an MM context cannot be found based on BBSGP info and a RA UPDATE REQUEST is received, try to find an MM context with an P-TMSI from which the TLLI could have been derived. This also checks, whether the routing area matches. This is similar to the old behaviour removed by the commits "sgsn: Only look at TLLIs in sgsn_mm_ctx_by_tlli" and "sgsn: Remove tlli_foreign2local", except that this will only be done for RA UPDATE REQUESTs now. Sponsored-by: On-Waves ehf
2016-02-22sgsn/test: Add test case test_gmm_routing_areasJacob Erlbeck2-0/+355
This test add different cases of routing area changes. Sponsored-by: On-Waves ehf
2016-02-22sgsn: Only look at TLLIs in sgsn_mm_ctx_by_tlliJacob Erlbeck1-1/+1
Currently the code also matches the TLLI against LOCAL and FOREIGN mappings of the P-TMSI, thus eventually finding MM contexts not consistent with the TLLI (both tlli and tlli_new differ). On the other hand, tlli_new is not checked at all. This commit changes the function to only look at mmctx->tlli, mmctx->tlli_new, and the routing area. Sponsored-by: On-Waves ehf
2016-02-22sgsn/test: Add bssgp_raid parameter to send_0408_messageJacob Erlbeck1-25/+30
The BSSGP cell identifier is used to get the RA for the TLLI lookup. The send_0408_message function used in the tests does not set this, so the RA identifier is always 0-0-0-0. This commit adds a parameters to pass the RAID and adds missing dummy RAIDs. Note that the CI can still not be set and thus is always 0. Sponsored-by: On-Waves ehf
2016-02-22sgsn: Remove tlli_foreign2localJacob Erlbeck1-5/+0
Currently foreign TLLI are sometimes mapped to local TLLI in the hope that they will match. This seems to sometimes introduce inconsisties, possibly leading to a failing assertion in _bssgp_tx_dl_ud. This mapping should probably reduce the allocation of additional LLME during routing area changes. This commit removes tlli_foreign2local. Sponsored-by: On-Waves ehf
2015-11-02gsup/oap: add OAP to GSUP client.Neels Hofmeyr1-0/+2
Trigger an OAP registration upon IPA connect. Feed incoming OAP messages to oap_handle() and send replies returned by it. Add oap_config to sgsn_config (todo: vty). Sponsored-by: On-Waves ehf [hfreyther: Fix coding style]
2015-10-13gprs: Use RAND_bytes for p-tmsiDaniel Willmann1-0/+1
[hfreyther: Link to libcrypto, include header, add uint8_t* cast]
2015-10-13sgsn/test: Really parse received DL LLC messagesJacob Erlbeck2-27/+61
Currently just the number of intercepted downlink messages is counted and eventually checked. The contents of the messages is lost. The PTMSI contained in ATTACH/RAU Accept messages is just 'guessed' by resetting the random number generator after reference PTMSIs have been generated. While this works with rand_r, RAND_bytes cannot be forced to recreate a certain number sequence this way (unless the backend is replaced). This commit changes that behaviour so that the last received msgb is kept and decoded. The PTMSI that has been assigned by the SGSN is then taken in the affected test cases and used instead of a 'guessed' one. This is similar to how a real MS would react to the Accept message. Sponsored-by: On-Waves ehf
2015-10-13sgsn/test: Add and call cleanup_test functionJacob Erlbeck1-0/+46
This (currently empty) function is meant to contain code that cleans up the left-overs of the test functions. This will be needed by the next commit that will store the last received msgb for later inspection. Sponsored-by: On-Waves ehf
2015-10-12Revert "gprs: Use RAND_bytes for p-tmsi"Holger Hans Peter Freyther1-1/+0
The commit not compiling/linking should have been a strong indicator that it has not been tested either. This reverts commit 6cf0249dacc4ae46eb0857c007906c9a3f128a3e.
2015-10-12gprs: Use RAND_bytes for p-tmsiDaniel Willmann1-0/+1
[hfreyther: Link to libcrypto, include header, add uint8_t* cast]
2015-05-25sgsn: Allow to resolve the IPv4 address of a GGSN through DNSHolger Hans Peter Freyther2-9/+19
For real networks we need to check if the requested APN string is allowed and then resolve the GGSN address through DNS. There are countries with two or three digit MNCs and one could either try to keep a list of countries that have two/three digits or just try both of them. I have opted for the later for the ease of the implementation. C-Ares doesn't allow to cancel a request so we will need to have the MMCTX and the Lookup have different lifetimes. We simply set ->mmctx to NULL in case the MMCTX dies more early. The selected and verified apn_str will be copied into the out parameter. In case no static APN/GGSN config is present and the dynamic mode is enabled a request will be made.
2015-05-25sgsn: If there is a subscr don't allow an empty listHolger Hans Peter Freyther1-4/+5
This is a left-over from the initial system where no PDP was provided by the system. For now if there is a subscr attached and no PDP context provisioned. He is not allowed to have a data connection. Update the testcase to create the pdp list entry more early with a wildcard and then change it to a specific match.
2015-05-24gsup: Copy the hlr-Number and use it during purgeHolger Hans Peter Freyther1-0/+2
Copy the hlr-Number into the sgsn_data and use it during the purgeMS. There is no unit test that looks at the data we send so I manually verified this by looking at the output. Below is the output of the test that purges the subscriber. <000f> gprs_subscriber.c:170 SUBSCR(123456789012345) Sending GSUP, will send: 0c 01 08 21 43 65 87 09 21 43 f5 09 07 91 83 61 26 31 23 f3
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