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* doxygen: enable AUTOBRIEF, drop \briefNeels Hofmeyr2017-06-2326-263/+263
| | | | | | | | | | Especially for short descriptions, it is annoying to have to type \brief for every single API doc. Drop all \brief and enable the AUTOBRIEF feature of doxygen, which always takes the first sentence of an API doc as the brief description. Change-Id: I11a8a821b065a128108641a2a63fb5a2b1916e87
* comments: gsm0808_utils: mention various 3GPP specsPhilipp Maier2017-06-231-0/+5
| | | | | Tweaked-by: nhofmeyr Change-Id: I990dfe9eeaf96f377484b828143935240a937226
* gsm0808: fix length check of the element decoder functionsPhilipp Maier2017-06-231-6/+6
| | | | | | | | | | | | | | | The length check of the decoder functions is not entirely correct. The check also checks for values below zero, which does not make sense, since the length is encoded as uint8_t. For some elements a minimum length is known (in most cases this is 1), so checking for zero is sufficient but in some cases (e.g. channel type) the spec mentions a minimum and maximum length. This is now also reflected in the code. Tweaked-by: nhofmeyr Change-Id: I78bc887f68d1963d28c6fcd631ac20ccd893d6d6
* gsm0808: add function gsm0808_speech_codec_from_chan_type()Philipp Maier2017-06-222-0/+55
| | | | | | | | | | | | | | | | The contents of the speech codec element (struct gsm0808_speech_codec), that is also used in the speech codec list element (struct gsm0808_speech_codec_list) can be generated directly from the permitted speech parameter in the channel type field (struct gsm0808_channel_type) when full AoIP with compressed speech via RTP/UDP/IP is assumed and when the codec configuration on the air interface exactly matches the codec configuration on the IP backhaul. This patch adds a function that can be used as a helper to fill out spech codec fields by only giving a permitted speech parameter as input. Change-Id: I257c972e9fdf0dfe940a8d483447085bd62e50a2
* gsm0808: add function gsm0808_chan_type_to_speech_code()Philipp Maier2017-06-222-0/+38
| | | | | | | | | | | | The permitted speech field used in channel type element (struct gsm0808_channel_type) uses a different representation as the type field in the speech codec element (struct gsm0808_speech_codec) This patch adds a function to convert from permitted speech to speech codec type. Change-Id: Ib26a9c20864459b2baaa04f49b6e7902ba44b7cb
* gsm0808: fix AoIP speech codec element parser/generatorPhilipp Maier2017-06-221-18/+82
| | | | | | | | | | The implementation of the parser/generator for the speech codec information element slightly wrong, making it impossible to use it properly. (See also: 3GPP TS 48.008, 3.2.2.103) Change-Id: Idabb0f9620659557672e1c6b90c75481192e5c89
* gsm/gsm48.c: drop useless assignmentVadim Yanitskiy2017-06-131-1/+0
| | | | Change-Id: I96c1ba70e332199a4ca95e827a7562f953975af4
* update/extend doxygen documentationHarald Welte2017-06-1230-98/+663
| | | | | | | | | It's a pity that even with this patch we still are fare away from having the whole API documented. However, at least we have a more solid foundation. Updates not only extend the documentation, but also make sure it is rendered properly in the doxygen HTML. Change-Id: I1344bd1a6869fb00de7c1899a8db93bba9bafce3
* Update doxygen main page for libosmo{core,gsm,vty}Harald Welte2017-06-121-0/+13
| | | | | | | We should link to project homepage as well as put the library into the wider Osmocom context. Change-Id: I07ca57ecef0f36c87c9ebacc1e1507c217bdb25b
* Add header file with definitions for GSM TS 04.14 / 3GPP TS 44.014Harald Welte2017-06-123-1/+23
| | | | Change-Id: I1f4fc2761b55a4f83544c1c3793ab67fec9fc120
* Distinguish between unsupported and invalid MCSMax2017-05-241-53/+54
| | | | | | | | | | | | | | | | | | Previously MCS0 was incorrectly set for some of type1 header values while according to 3GPP TS 44.060 it can only be set for type3. Fix this: * use EGPRS_MCS* constants instead of magic values * do not set MCS0 for reserved bits values in EGPRS header type1 * return different error codes for invalid and unsupported MCS as well as for other decoding errors Note: there's no need to adjust tests because MCS0 decoding is not supported but it's better to explicitly distinguish between unsupported and invalid values nevertheless. Change-Id: Id665d5c0cf50efa18b1bcbf4f17359418a380f9e Related: OS#1524
* add libpseudotalloc as super-simplistic talloc replacementHarald Welte2017-05-171-0/+4
| | | | | | | | | | | In tightly embedded builds (--enable-embedded), we want the ability to replace talloc with a very simple heap allocator to avoid the complexity of talloc without modifying all our code that assumes talloc. This will break the hierarchical notion of the allocator, but libosmo{core,gsm,coding,codec} don't rely on that anyway. Change-Id: Ie341034076f242a813f081919dd09d845775ad35
* gsm/gsm0411_smr.c: strip unused variableVadim Yanitskiy2017-05-171-2/+1
| | | | Change-Id: I53f69913907588c45a9661c4e86e1bfb57a2418f
* gsm0808 + ipa: fix compilation on systems without sys/socket.hHarald Welte2017-05-152-3/+15
| | | | Change-Id: I60f5d4982cd96ab29f9924ec11b46bf56fbfc346
* use osmo_{htonl,htons,ntohl,ntohs}() functions all over libosmocoreHarald Welte2017-05-157-25/+22
| | | | | | This gets us one step closer to fixing the embedded build Change-Id: I3fc2639b6ade9ab138766987eceab7ec9498fdc7
* Make EARFCN size calculation more robustMax2017-05-142-6/+22
| | | | | | | | | | | | | * add osmo_earfcn_bit_size_ext() function which allows to specify how many EARFCNs we should skip when estimating required bit size for SI2quater * make old osmo_earfcn_bit_size() into wrapper over newly added function and mark it as deprecated This is necessary to properly estimate necessary space for EARFCNs when they are spread over several SI2q messages with different index. Change-Id: I92e12e91605bdab9916a3f665705287572434f74 Related: RT#8792
* gsm_04_08: Add missing GSM cause valueDaniel Willmann2017-05-121-0/+3
| | | | | | | | | | | | Table 10.5.157 in 10.5.6.6 of 3GPP TS 04.08 is badly formatted. The first value 0x19 "LLC or SNDCP failure" is in the same line as the heading and has not been included in the struct_value so far. Table 10.5.157 in 10.5.6.6 of 3GPP TS 24.008 fixes this formatting issue and also defines two more values 0x08 and 0x18 which are now added to the struct value_string. Change-Id: I5bcc52f739ff0677011d024448afcc2a54869638
* doc: fix incorrect return value descriptionMax2017-05-101-1/+1
| | | | | Change-Id: Ieba009273f911bc4217122a6346220aeb29e8bc4 Related: OS#1614
* timer: add osmo_timer_setup()Pablo Neira Ayuso2017-05-093-8/+4
| | | | | | | | | | | | | | | Add a new function timer function to set up the timer, similar to what we have in the Linux kernel. This patch also converts existing opencoded timer setup in the libosmocore tree as initial client of this new function. This patch implicitly removes function callback passed by reference that defeat compile time type validation. Compile-tested only, but I ran make check that reports success when testing timer infrastructure. Change-Id: I2fa49972ecaab3748b25168b26d92034e9145666
* gsm0808: fix control flow issuePhilipp Maier2017-05-081-3/+2
| | | | | | | | | | | | | | | | | | Coverity Scan reported a control flow issue in line 206: CID 166898: Control flow issues (DEADCODE) The second branch of the if statement can not be reached. The purpose of the second if branch was to filter out zero length elements if the header states that it is a non extended speech codec type. This makes no sense, since the header needs at least one byte. This patch removes the second if branch, zero length elements are catched by the already existing zero length check at the beginning of the function Change-Id: I89751fc0d598734c64ef1fdced75b7c4fa77c616
* Add SW Description (de)marshallingMax2017-04-282-0/+160
| | | | | | | | | | | | | | | | * data structure representing 3GPP TS 52.021 §9.4.62 SW Description * function to serialize it into msgb * function to deserialize it from buffer * functions to extract/estimate buffer size for SW Description * test harness (partially taken from OpenBSC) There are several similar functions to deal with SW Description in OpenBSC, there's also need to use similar functionality in OsmoBTS. Hence it's better to put the code into common library with proper tests and documentation. Change-Id: Ib63b6b5e83b8914864fc7edd789f8958cdc993cd Related: OS#1614
* Uninitialized variable in ipa_ccm_make_id_resp_from_req()Harald Welte2017-04-271-0/+2
| | | | | | | | | | We are allocating a buffer on the stack without initializing it, and then passing it into ipa_ccm_make_id_resp(). There is no real danger from this, as the buffer is only uninitialized if num_ies is 0, but let's memset() it for good style Change-Id: If5761a47b8cba73ddcc02a88cfa5c87c1970c04e Fixes: coverity CID#167040
* fix spelling in API docu, command reply, logging, descriptionsThorsten Alteholz2017-04-232-2/+2
| | | | | | sections: ctrl, gb, gsm, vty Change-Id: Iac211b5cd8504da36b699777b95a2448dd7c3e70
* ipa: Introduce helpers to encode IPA CCM ID RESPONSEHarald Welte2017-04-152-1/+120
| | | | | | | | | | The ipa.c file already contained code to parse an ID RESPONSE into the 'struct ipaccess_unit', but it didn't so far contain code to put together an ID RESPONSE packet based on that structure. Let's change that with ipa_ccm_make_id_resp() and a helper wrapper ipa_ccm_make_id_resp_from_req(). Change-Id: Icbcd8827a75fd5f3393351c1ca372de85275ad35
* gsm0808: make gsm0808_create_reset_ack() accessiblePhilipp Maier2017-04-081-0/+1
| | | | | | | | | | | The create function to generate the RESET ACKNOWLEDGE message is not accessible from outside, as it does not appear in limosmogsm.map. It also has not testcase. This commit adds gsm0808_create_reset_ack() to the map file and also adds a testcase. Change-Id: I82d3411484f82b4a9205d407fa0442244678f183
* gsm0808: Add create functions for BSS_MAP_MSG_ASSIGMENT_RQSTPhilipp Maier2017-04-082-0/+57
| | | | | | | | | | gsm0808.h/c lacks functionality to generate BSS_MAP_MSG_ASSIGMENT_RQST messages. These messages are required if the code is used in an MSC implementation. This commit adds a gsm0808_create_assignment() function, that generates an A/AoiP BSS_MAP_MSG_PAGING message. Change-Id: I4d1d455a1e1cf95407e23ded7b7defbcf2dd6ff0
* gsm0808: Add create functions for BSS_MAP_MSG_PAGINGPhilipp Maier2017-04-082-0/+53
| | | | | | | | | | gsm0808.h/c lacks functionality to generate BSS_MAP_MSG_PAGING messages. These messages are required if the code is used in an MSC implementation. This commit adds a gsm0808_create_paging() function, that generates an A/AoiP BSS_MAP_MSG_PAGING message. Change-Id: I9afecf0109305ca5153bf081bb29cd94071dd2b7
* gsm0808: Add create functions for CIPHER MODE COMMANDPhilipp Maier2017-04-082-0/+34
| | | | | | | | | | gsm0808.h/c lacks functionality to generate CIPHER MODE COMMAND messages. These messages are required if the code is used in an MSC implementation. This commit adds a gsm0808_create_cipher() function, that generates an A/AoiP CIPHER MODE COMMAND message. Change-Id: I8eb1c357860c3e740b0f5d17e1c256bc87920958
* gsm0808: Add utils for Cell Identifier ListPhilipp Maier2017-04-082-0/+80
| | | | | | | | | | The planned support for true A over IP requires the encoding of the a Cell Identifier List element (see also BSS_MAP_MSG_PAGING). This commt adds encoding/decoding functionality and tests for the element mentioned above, however, it is not yet actively used. Change-Id: I625245dd1dd396fc2bc189e8cd2c444a33042528
* gsm0808: Add utils for Encryption InformationPhilipp Maier2017-04-082-0/+73
| | | | | | | | | | The planned support for true A over IP requires the encoding of the an Encryption Information element (see also BSS_MAP_MSG_CIPHER_MODE_CMD). This commt adds encoding/decoding functionality and tests for the element mentioned above, however, it is not yet actively used. Change-Id: I8262050a9d9fd3f17462cfbb046c6e034dccc6fb
* gsm0808: Add utils for Channel TypePhilipp Maier2017-04-082-0/+75
| | | | | | | | | | The planned support for true A over IP requires the encoding of the a Channel Type element (see also ASSIGNMENT REQUEST). This commt adds encoding/decoding functionality and tests for the element mentioned above, however, it is not yet actively used. Change-Id: Id0e2164d84b8cbcc6fe6a090fc7f40a1251421d7
* gsm0808: Add AoIP specific elements to gsm0808_create_... functionsPhilipp Maier2017-04-082-5/+58
| | | | | | | | | the classic A implementation in libosmocore lacks support for AoIP message elements. This patch adds support for AoIP by adding a set of new gsm0808_create_..., which support the missing AoIP message elements Change-Id: I77f866abec1822d19871052f3c647ad782785b34
* gsm0808: Add utils for Speech Codec List and Speech CodecPhilipp Maier2017-04-082-0/+190
| | | | | | | | | | The planned support for true A over IP requires the encoding and decoding of a so called "Speech Codec Element" element. This commt adds parsing functionality and tests for the element mentioned above, however, it is not yet actively used. Change-Id: I0e1e2edf47adaa45b22d4b0bcae3640dba7ca200
* gsm0808: Add utils for AoIP Transport Layer AddressPhilipp Maier2017-04-083-1/+125
| | | | | | | | | | The planned support for true A over IP requires the encoding and decoding of a so called "AoIP Transport Layer Address" element. This commt adds parsing functionality and tests for the element mentioned above, however, it is not yet actively used. Change-Id: I57933b0a06a3f54ec2a41e6ecb6ced9fbbc89332
* Fix LAPD UA message buffer memory leak.Jean-Francois Dionne2017-03-291-5/+5
| | | | | | | | | The state check in lapd_dl_reset causes some buffers never to be released. Using talloc report LAPD UA message buffers are never released after each call and cause a memory leak. Change-Id: I2799b70623f2ec4dbc725eb213e332e98da02a3e
* Add support for PCU version reportMax2017-03-231-0/+1
| | | | | | | | Expand 3GPP TS 52.021 §9.4.43 Probable Cause with Osmocom-specific value for PCU version reporting to enable sending it via OML alarms. Change-Id: If57459c0610f2c7b36d599b13087c8deef8bdd9e Related: OS#1614
* abis: add message type namesMax2017-03-222-0/+104
| | | | | | | | Add human-readable names for Message Types from 3GPP TS 52.021 §9.1 Related: OS#1614 Change-Id: Ide8202b4387351f57ceee34a9eb8c30aef09a663
* abis: add attribute namesMax2017-03-212-0/+72
| | | | | | | Add human-readable names for Attributes from 3GPP TS 52.021 §9.4 Change-Id: I861247c01557dac7e484ef6fb9b170f69c8a7f55 Related: OS#1614
* build: fix build dependencies for generated sourcesNeels Hofmeyr2017-03-201-1/+3
| | | | | | | | Ensure that a changed conv_gen.py and/or conv_codes_gsm.py result in regeneration of the gsm0503* generated sources. Before this patch, manual cleaning of the generated files was necessary to benefit from a code update. Change-Id: Ib4328662c21280c0ea6aa9391a64ada2c6598704
* add gsm48_pdisc_msgtype_name()Neels Hofmeyr2017-03-162-0/+202
| | | | | | | | | | | | | | | Composing the message type string requires knowing the protocol discriminator. To ease printing the message type, add this function to switch between the defined value_string[]s depending on pdisc. Also publish the message type value_string[]s -- without inline functions to access them because it is anyway more convenient to use gsm48_pdisc_msgtype_name() instead. Since gsm48_pdisc_msgtype_name() is nontrivial, do not add as inline function -- in case the message type is not known, it needs a static string buffer. Change-Id: I0fca8e95ed5c2148b1a7440eff3fc9c7583898df
* add gsm48_pdisc_names and gsm48_pdisc_name()Neels Hofmeyr2017-03-162-0/+20
| | | | | | | I often want to log the protocol discriminator in the openbsc debug log. It's more useful to get the name directly instead of looking it up every time. Change-Id: I0f053e2a4360b27ffccda7cf82469fb1b1cbb3ae
* auth_milenage: fix check against too large indNeels Hofmeyr2017-03-161-1/+1
| | | | | | | To ensure that the IND index appended to SEQ does not affect the SEQ, the check should read '>= seq_1', not '>'. Change-Id: Ib1251159eee02aa07fae1b429ffec2e4604bf6a8
* osmo_auth_gen_vec: UMTS auth: fix SQN as SEQ || INDNeels Hofmeyr2017-03-151-1/+66
| | | | | | | | | | | | | | | | | | | | | | | | | | So far we incremented SQN by 1, which doesn't match the procedures described in 3GPP TS 33.102. An IND (index) denotes a non-significant part of SQN, and the significant SEQ part needs to be incremented. In OsmoHLR we furthermore want to use the "exception" suggested in annex C.3.4, so that each HLR's client has a fixed IND index. In other words, we will not assign IND cyclically, but keep IND unchanged per auth vector consumer. Add 'ind_bitlen' and 'ind' to the osmo_sub_auth_data.u.umts structure and increment SQN accordingly. Add a comment explaining the details. Because 'ind_bitlen' is still passed as zero, the milenage_test does not change its behavior, which is a feature I want to clearly show in this patch. The test will be expanded for the newly implemented SQN scheme in a subsequent patch. Adjust osmo-auc-gen.c to still show the right SQN and SQN.MS -- because it is passing ind_bitlen == 0, osmo-auc-gen can rely on single increments and know SQN.MS is sqn - 1. Note that osmo-auc-gen_test output remains unchanged. Related: OS#1968 Change-Id: Ibc97e1736a797ffcbf8c1f7d41c5c4518f4e41bf
* osmo_auth_gen_vec: UMTS auth: store last used SQN, not nextNeels Hofmeyr2017-03-151-3/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Prepare for the implementation of splitting SQN increments in SEQ and an IND part; particularly to clearly show where the changes in auth/milenage_test's expectations originate. Rationale: the source of UMTS auth vectors, for us usually OsmoHLR, typically stores the last used SQN, not the next one to be used. Particularly with the upcoming fix of the SQN scheme, this change is important: the next SQN will depend on which entity asks for it, because each auth consumer may have a particular slot in the IND part of SQN. It does not make sense to store the next SQN, because we will not know which consumer that will be for. The milenage_test has always calculated a tuple for SQN == 34. To account for the increment now happening before calculating a tuple, lower the test_aud->sqn by one to 0x21 == 33, so that it is still calculating for SQN == 34. Because we are no longer incrementing SQN after the tuple is generated, milenage_test's expected output after doing an AUTS resync to 31 changes to the next SQN = 32, the SQN used for the generated tuple. (BTW, a subsequent patch will illustrate AUTS in detail.) osmo-auc-gen now needs to pass the user requested SQN less one, because the SQN will be incremented befor generating the auth vector. Also the SQN remains the same after generating, so SQN output needs less decrementing. Note that the expected output for osmo-auc-gen_test remains unchanged, hence the same input arguments (particularly -s <sqn> and -A <auts>) still produce the same results. Note: osmo-hlr regression tests will require adjustments when this patch is merged, because it must now pass desired_sqn - 1 instead of just desired_sqn. See osmo-hlr change-id I4ec5a578537acb1d9e1ebfe00a72417fc3ca5894 . Related: OS#1968 Change-Id: Iadf43f21e0605e9e85f7e8026c40985f7ceff1a3
* lapd_core: Use 'struct value_string' for LAPD state namesHarald Welte2017-03-151-28/+33
| | | | | | | | | We don't really use state numbers without bounds check into string tables since March 2010, when value_string became part of libosmocore. It's time to catch up, 7 years later... Change-Id: I1dac7b4cb441a1119cc167112521e8b8aae62e63
* libosmocoding: migrate transcoding routines from OsmoBTSVadim Yanitskiy2017-03-071-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | There are some projects, such as GR-GSM and OsmocomBB, which would benefit from using one shared implementation of GSM 05.03 code. So, this commit introduces a new sub-library called libosmocoding, which (for now) provides GSM, GPRS and EDGE transcoding routines, migrated from OsmoBTS. The original GSM 05.03 code from OsmoBTS was relicensed under GPLv2-or-later with permission of copyright holders (Andreas Eversberg, Alexander Chemeris and Tom Tsou). The following data types are currently supported: - xCCH - PDTCH (CS 1-4 and MCS 1-9) - TCH/FR - TCH/HR - TCH/AFS - RCH/AHS - RACH - SCH Change-Id: I0c3256b87686d878e4e716d12393cad5924fdfa1
* Check for proper lapdm_datalink entityMax2017-03-021-2/+8
| | | | | | | | | | Previously lapdm_datalink->entity->mode was dereferenced without checking if correct entity is present. This might lead to segfault. Check it explicitly before dereferencing, log error and gracefully return if necessary. Change-Id: I0361e3731e86712b415a370cab1128d611988f56 Related: OS#1898
* fix: gsm0808.c: unterminated value_string array gsm0808_bssap_namesNeels Hofmeyr2017-03-021-0/+1
| | | | Change-Id: Ie38bae32372dc41e1902a8f6f0bc550ae515cfb8
* Export comp128 v2 and v3 routines as wellHolger Hans Peter Freyther2017-02-271-0/+2
| | | | | | | It is in the public header file and allows to easily bind it from other languages (without having to go through the abstraction). Change-Id: I0128d529c52ec030cfb87b0aff3c69cadf2c59d2
* fix osmo_auth_gen_vec_auts: copy rand to auth vectorNeels Hofmeyr2017-02-221-1/+8
| | | | | Related: OS#1593 Change-Id: If943731a78089f0aac3d55245de80596d01314a4
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