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2019-02-18WIP: Add support for GPRS NS IP Sub-Network-Service (SNS)daniel/gb-snsHarald Welte1-3/+11
Change-Id: I84786c3b43a8ae34ef3b3ba84b33c90042d234ea
2019-02-18WIP: gprs_ns: Add code for SNS-SIZE and SNS-CONFIG encodingHarald Welte1-0/+9
Change-Id: I5c47e1c3c10deb89a7470ee2c03adfc174accc93
2019-02-08gsm/gsm0480: introduce gsm0480_create_release_complete()Vadim Yanitskiy1-1/+3
In OsmoMSC, it's required to be able to specify a particular GSM 04.07 transaction ID for GSM 04.80 Release complete message instead of the hard-coded value, that is used gsm0480_create_ussd_release_complete(). Let's finally deprecate gsm0480_create_ussd_release_complete(), and introduce a new function without USSD prefix, as this message is also used in other "structured" supplementary services. Change-Id: Ie3ac85fcef90a5e532334ba3482804d5305c88d7
2019-02-07protocol/gsm_04_14: Fix the OPEN LOOP message typeSylvain Munaut1-1/+1
Change-Id: Id4350dee4353ebf9de0450dd5dab6e4f2ee7c3a6 Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
2019-02-05gsm0808: Add CSFB indication IE to BSSMAP CLEAR COMMANDPhilipp Maier1-0/+1
When a call that was established in a CSFB context ends the CLEAR COMMAND that is send from the BSC to the MSC should contain a CSFB indication IE, which consists of just the IE byte itsslef. This additional IE tells the BSC to include other CSFB related IEs into the RR Release message. Change-Id: Id8a75e1da2d5f520064666e4ee413d1c91da6ae3 Related: OS#3778
2019-02-05bitvec: Add bitvec_tailroom_bits() functionHarald Welte1-0/+6
This is similar to msgb_tailroom(): It returns the amount of space left at the end of the bit vector (compared to the current cursor). The function returns the number of bits left in the bitvec. Change-Id: I8980a6b6d1973b67a2d9ad411c878d956fb428d1
2019-02-05bitvec: Add bitvec_bytes_used() functionHarald Welte1-0/+9
This new bitvec API function returns the number of bytes used in a given bit-vector. Change-Id: Id4bd7f7543f5b0f4f6f876e283bd065039c37646
2019-02-05gsm_08_08.h: Add IEI definitions from Release 15Harald Welte1-0/+5
Change-Id: If3649606ba7c25121e30ed02939ca08c94665be5
2019-02-05Extend gsm_04_08.h with CSFB related definitiosn form 44.018 Rel 15Harald Welte1-0/+2
These are some IEI definitions that we'll need for CSFB Fast Return Change-Id: I0e101af316438b56d63d43fc2cb16d7caf563d07
2019-02-04add osmo_tdef API, originally adopted from osmo-bsc T_defNeels Hofmeyr2-0/+239
Move T_def from osmo-bsc to libosmocore as osmo_tdef. Adjust naming to be more consistent. Upgrade to first class API: - add timer grouping - add generic vty support - add mising API doc - add C test - add VTY transcript tests, also as examples for using the API From osmo_fsm_inst_state_chg() API doc, cross reference to osmo_tdef API. The root reason for moving to libosmocore is that I want to use the mgw_endpoint_fsm in osmo-msc for inter-MSC handover, and hence want to move the FSM to libosmo-mgcp-client. This FSM uses the T_def from osmo-bsc. Though the mgw_endpoint_fsm's use of T_def is minimal, I intend to use the osmo_tdef API in osmo-msc (and probably elsewhere) as well. libosmocore is the most sensible place for this. osmo_tdef provides: - a list of Tnnnn (GSM) timers with description, unit and default value. - vty UI to allow users to configure non-default timeouts. - API to tie T timers to osmo_fsm states and set them on state transitions. - a few standard units (minute, second, millisecond) as well as a custom unit (which relies on the timer's human readable description to indicate the meaning of the value). - conversion for standard units: for example, some GSM timers are defined in minutes, while our FSM definitions need timeouts in seconds. Conversion is for convenience only and can be easily avoided via the custom unit. By keeping separate osmo_tdef arrays, several groups of timers can be kept separately. The VTY tests in tests/tdef/ showcase different schemes: - tests/vty/tdef_vty_test_config_root.c: Keep several timer definitions in separately named groups: showcase the osmo_tdef_vty_groups*() API. Each timer group exists exactly once. - tests/vty/tdef_vty_test_config_subnode.c: Keep a single list of timers without separate grouping. Put this list on a specific subnode below the CONFIG_NODE. There could be several separate subnodes with timers like this, i.e. continuing from this example, sets timers could be separated by placing timers in specific config subnodes instead of using the global group name. - tests/vty/tdef_vty_test_dynamic.c: Dynamically allocate timer definitions per each new created object. Thus there can be an arbitrary number of independent timer definitions, one per allocated object. T_def was introduced during the recent osmo-bsc refactoring for inter-BSC handover, and has proven useful: - without osmo_tdef, each invocation of osmo_fsm_inst_state_chg() needs to be programmed with the right timeout value, for all code paths that invoke this state change. It is a likely source of errors to get one of them wrong. By defining a T timer exactly for an FSM state, the caller can merely invoke the state change and trust on the original state definition to apply the correct timeout. - it is helpful to have a standardized config file UI to provide user configurable timeouts, instead of inventing new VTY commands for each separate application of T timer numbers. Change-Id: Ibd6b1ed7f1bd6e1f2e0fde53352055a4468f23e5
2019-02-04vty api: add vty_out_va()Neels Hofmeyr1-0/+1
Provide a va_list type vty_out() variant, to be able to pass on variable arguments from other function signatures to vty_out(). This will be used by Ibd6b1ed7f1bd6e1f2e0fde53352055a4468f23e5 for osmo_tdef. Change-Id: Ie6e6f11a6b794f3cb686350c1ed678e4d5bbbb75
2019-02-04socket.h: add missing includeMax1-2/+7
socket.h uses INET6_ADDRSTRLEN without including arpa/inet.h where it's defined which might break external users of socket.h Fix this by adding missing include. The error was introduced in 64b51eb68bd272b6b1f2cefa2b33e9dd74024d0c Change-Id: I2883addcb81cec038577e401e356e8f07a947d4c
2019-02-04GSUP: deprecate osmo_gsup_get_err_msg_type()Oliver Smith1-2/+14
Replace osmo_gsup_get_err_msg_type() with a wrapper to OSMO_GSUP_TO_MSGT_ERROR(). This macro assumes, that all error messages are (request message | 0x000001). Add a big comment header for osmo_gsup_message_type, describing this already implicitly followed rule and therefore making it explicit. With this change, we don't need to maintain the request -> error message mapping in osmo_gsup_get_err_msg_type() anymore. Related: Iec1b4ce4b7d8eb157406f006e1c4241e8fba2cd6 (osmo-gsm-manuals) Change-Id: I46d9f2327791978710e2f90b4d28a3761d723d8f
2019-01-29osmo_fsm_state_name: make robust against NULL fiNeels Hofmeyr1-1/+1
Change-Id: I61d4f7dfada2763948f330745ac886405d889a12
2019-01-29add osmo_classmark_* APINeels Hofmeyr1-0/+16
osmo-bsc and osmo-msc implement identical Classmark structures. It makes sense to define once near the gsm48 protocol definitions. Also move along some generic Classmark API from osmo-msc. Change-Id: Ifd27bab0380f7ad0c44c719aa6c8bd62cf7b034c
2019-01-28add osmo_hexdump_buf() and testNeels Hofmeyr1-0/+3
Add osmo_hexdump_buf() as an all-purpose hexdump function, which all other osmo_hexdump_*() implementations now call. It absorbs the static _osmo_hexdump(). Add tests for osmo_hexdump_buf(). Rationale: recently during patch review, a situation came up where two hexdumps in a single printf would have been useful. Now I've faced a similar situation again, in ongoing development. So I decided it is time to provide this API. The traditional osmo_hexdump() API returns a non-const char*, which should probably have been a const instead. Particularly this new function may return a string constant "" if the buf is NULL or empty, so return const char*. That is why the older implementations calling osmo_hexdump_buf() separately return the buffer instead of the const return value directly. Change-Id: I590595567b218b24e53c9eb1fd8736c0324d371d
2019-01-28gsm0808: add BSSMAP Cell Identifier matching APINeels Hofmeyr2-0/+5
Add * osmo_lai_cmp() (to use in gsm0808_cell_id_u_matches()) * osmo_cgi_cmp() (to use in gsm0808_cell_id_u_matches()) * gsm0808_cell_id_u_match() (to re-use for single IDs and lists) * gsm0808_cell_ids_match() * gsm0808_cell_id_matches_list() * Unit tests in gsm0808_test.c Rationale: For inter-BSC handover, it is interesting to find matches between *differing* Cell Identity kinds. For example, if a cell as CGI 23-42-3-5, and a HO for LAC-CI 3-5 should be handled, we need to see the match. This is most interesting for osmo-msc, i.e. to direct the BSSMAP Handover Request towards the correct BSC or MSC. It is also interesting for osmo-bsc's VTY interface, to be able to manage cells' neighbors and to trigger manual handovers by various Cell Identity handles, as the user would expect them. Change-Id: I5535f0d149c2173294538df75764dd181b023312
2019-01-22constrain gsm48_generate_mid() output array boundsHarald Welte1-0/+1
The longest BCd-digit type identity is the IMEISV with 16, so there's no point in trying to parse up to 255 decimal digits, which will do nothing but to overflow the caller-provided output buffer. Let's also clearly define the required minimum size of the output buffer and add a reltead #define for it. Change-Id: Ic8488bc7f77dc9182e372741b88f0f06100dddc9
2019-01-21gsm_23_003.h: add GSM23003_IMEI_NUM_DIGITS_NO_CHKOliver Smith1-0/+3
Add new define for the 14 digit IMEI without the Luhn checksum, as it is used in OsmoHLR. Change-Id: I02b54cf01a674a1911c5c897fbec02240f88b521
2019-01-21Rename msgb_wrap_with_TL()Max1-1/+1
This resolves an issue introduced in 84fb5bb6a09a6a358f98c654c84c3b99a0f24eef when msgb_wrap_with_TL() was introduced as an inline function with *exactly the same name* as in osmo-msc.git and openbsc.git. We *NEVER* do something like this. Functions moved from applications to library *MUST* always be renamed. This has been the case for almost a decade now. With this subsequent change we make sure the libosmocore function has a different name and doesn't clash. After this commit, old openbsc.git and osmo-bsc.git should again build fine. Change-Id: If1e851ac605c8d2fde3da565b0bd674ea6350c2e
2019-01-19Prevent GCR encoder/decoder functions from being used directlyMax1-2/+2
They only make sense in the context of LCLS so far - let's make sure they're not used by external projects directly instead of gsm0808_*() counterparts. Change-Id: I4ae5a3472a20492d5f76170b722e4e2274a5c433
2019-01-19LCLS: make GCR into static member of osmo_lclsMax1-1/+2
Most of the time we'll have GCR filled anyway so it make sense to have it as static parameter instead of a pointer to separately allocated structure. Update tests to cover both static and dynamic osmo_lcls allocation variants. Change-Id: I905c36d8455911c68c30bc429379b7313dd46aea
2019-01-19LCLS: add status parameter to Assignment Completed messageMax1-0/+6
* add gsm0808_create_ass_compl2() with additional gsm0808_lcls_status parameter and make gsm0808_create_ass_compl() into trivial wrapper around it * update tests accordingly Change-Id: I547c6b8707123aa8c1ef636db88908df112d90a4 Related: OS#2487
2019-01-17socket: add define for socket name lengthPhilipp Maier1-0/+2
The function osmo_sock_get_name_buf() can be used to write a string representation to a user provided memory. Unfortunately the proper length for the user provided memory is not obvious. To make using osmo_sock_get_name_buf() more practical, add a define constant that defines the length of the required memory. Also use this define in socket.c. Change-Id: If8be8c2c0d4935da17ab13b2c2127b719ceefbcc
2019-01-14LCLS: add GCR comparison helperMax1-0/+1
Change-Id: I9e3b5560a058b976638d03cb819415d237ae9984
2019-01-14comments: update/fix three 3GPP spec referencesNeels Hofmeyr3-3/+3
Change-Id: I3ab94f362866d752099000afe62922288b3dd118
2019-01-14change GSM48_CMSERV_* to enum type, add namesNeels Hofmeyr1-7/+14
Prepare handling multiple CM Service Requests in osmo-msc: an enum is more clear than an int and #defines for passing around and count CM Service types. Change-Id: I9c2a7adc45ab7a1a7519168e965e7d805e1481ff
2019-01-14gsm23003: add osmo_imei_str_valid()Oliver Smith2-0/+3
Verify 14 digit and 15 digit IMEI strings. OsmoHLR will use the 14 digit version to check IMEIs before writing them to the DB. Place the Luhn checksum code in a dedicated osmo_luhn() function, so it can be used elsewhere. Related: OS#2541 Change-Id: Id2d2a3a93b033bafc74c62e15297034bf4aafe61
2019-01-12port rest octets encoding code from osmo-bscStefan Sperling2-0/+126
As part of fixing issue OS#3075, we want to migrate support for encoding system information from osmo-bsc to libosmocore. This change ports osmo-bsc code for encoding SI rest octets. The conversion was a bit tricky in some places because some functions receive a 'struct gsm_bts' parameter in osmo-bsc. In this libosmocore version, such functions expect parameters which correspond to the individual fields of 'struct gsm_bts' which are used by these functions. Several structs from osmo-bsc's system_information.h are now also declared in libosmocore headers, with an added osmo_ prefix to avoid collisions with existing definitions in osmo-bsc. Some helpers were ported from osmo-bsc's system_information.c to libosmocore's gsm48_rest_octets.c. Contrary to osmo-bsc's implementation they are now only visible within this file. Unfortunately, this code ported from osmo-bsc lacks unit tests. Change-Id: I47888965ab11bba1186c21987f1365c9270abeab Related: OS#3075
2019-01-12port arfcn range encode support from osmo-bscStefan Sperling1-0/+25
As part of fixing issue OS#3075, we want to migrate support for encoding system information from osmo-bsc to libosmocore. This change ports one of the prerequisites for doing so: osmo-bsc code for range-encoding ARFCNs, including tests. An osmo_gsm48_ prefix has been prepended to public symbols in order to avoid clashes with existing symbols in osmo-bsc code. Change-Id: Ia220764fba451be5e975ae7c5eefb1a25ac2bf2c Related: OS#3075
2019-01-09LCLS: use proper types for value_string wrappersMax1-3/+3
Change-Id: I0f47a610e06ac99bd60a5aad6f50f3658480165e
2019-01-09Cosmetic: GSUP: note "on wire" for imei_resultOliver Smith1-2/+2
Note that OSMO_GSUP_IMEI_RESULT_ACK is 0 on the wire, although the enum value is 1. Same with NACK (1 on wire, enum 2). I had implemented enum osmo_gsup_imei_result after enum osmo_gsup_cancel_type above, where this comment exists as well, and I incorrectly assumed that enum osmo_gsup_cn_domain in the middle was also implemented this way and therefore adding the comments to each enum would be redundant. But for cn_domain, the values on the wire are the same as the enum values. Change-Id: If97c34f117bfaab2232bbb625e9d118c8f390e58
2019-01-08add osmo_lu_type_names[], osmo_lu_type_name()Neels Hofmeyr1-0/+4
Move lupd_names[] from osmo-msc to libosmo-gsm. Change-Id: Ica25919758ef6cba8348da199b0ae7e0ba628798
2019-01-08add osmo_mi_name(), for MI-to-string like "IMSI-123456"Neels Hofmeyr1-0/+1
We have gsm48_mi_to_string() and osmo_bcd2str(), but still lack a function that conveniently prints both MI type and value in one function call. Related: http://people.osmocom.org/neels/mi_mi_mi.jpg Change-Id: I7798c3ef983c2e333b2b9cbffef6f366f370bd81
2019-01-07LCLS: fix LCLS-CONNECT-CONTROL encoderMax1-2/+2
Previously it could encode both incorrect values as well as incorrect message. Let's fix this by explicitly checking for invalid values and ensuring that at least one of the parameters is valid. This function have no external or internal users so it's better to fix type signature as well to match the rest of gsm0808_create_lcls_*(). Change-Id: I7b33a771acbd391c5f9a494d6450edb18511433f
2019-01-04fix typo in enum BSS_MAP_MSG_TYPE: BSS_MAP_MSG_ASSIGMENT*Neels Hofmeyr1-3/+7
Keep #defines to still support previous wrong spelling. Change-Id: Id4cf812f0bc3cd40f6bfa05166f817a07a647f71
2019-01-04osmo_rat_type: add OSMO_RAT_EUTRAN_SGSNeels Hofmeyr1-0/+1
osmo-msc is about to implement the SGs interface and requires a RAT indicator for that. Change-Id: I00588396bfe03feba38ecb0717d584594f0b2b46
2019-01-03gsm_utils: add enum osmo_rat_type, from osmo-msc enum ran_typeNeels Hofmeyr1-0/+13
In the MSC, we have RAN types GERAN_A and UTRAN_IU, now we need a similar enum in osmo-hlr's GSUP client. Naming: in the MAP specifications, the RAN type is mostly called RAT type, (Radio Access Network vs. Radio Access Technology?). Since GSUP is more about MAP messages, I'm calling the enum osmo_rat_type. Rationale: osmo-msc and osmo-sgsn want to tell the osmo-hlr which RAT a subscriber is calling on. A subsequent patch will extend the GSUP protocol and add a RAT types IE. Change-Id: I659687aef7a4d67ca372a39fef31dee07aed7631
2019-01-03add LOGPFSMSL(), LOGPFSMSLSRC()Neels Hofmeyr1-6/+30
Using an FSM instace's logging context is very useful. Sometimes it makes sense to log something on a different logging category than the FSM definition's default category. For example, an MSC conn has aspects concerning MM, CC, RR, MGCP, ..., and currently all of those log on DMM. This came up in I358cfbaf0f44f25148e8b9bafcb9257b1952b35a, where I want to log an MGCP event using a ran_conn context, and used the conn->fi->id. That of course omits context like the current conn FSM state... I remember at least one other place where I recently added logging using some fi->id as context, so it might turn out useful in various places. Change-Id: I11b182a03f5ecb6df7cd8f260757d3626c8e945d
2019-01-03LOGPFSM*: guard against fi == NULLNeels Hofmeyr1-4/+4
The LOGPFSM macros are in such wide use that they should guard against a NULL fi pointer. In case of NULL, default to subsys = DLGLOBAL, loglevel = LOGL_ERROR and state = "fi=NULL". Change-Id: I9eaf8b7e2cf1e450ae626cb2fc928862008f6233
2019-01-03add API doc for LOGPFSM* macrosNeels Hofmeyr1-0/+31
Change-Id: I3bf6500889aa58195f50a726dec0876c0c2baec3
2018-12-23LCLS: enc/dec entire parameter set instead of GCRMax1-2/+2
In 3GPP TS 48.008 the Global Call Reference IE is only used in HANDOVER REQUEST (§3.2.1.8) and ASSIGNMENT REQUEST (§3.2.1.1) messages which also include LCLS Config and CSC parameters. Hence, there's no point in using GCR encode/decode functions alone. Introduce gsm0808_dec_lcls() and gsm0808_enc_lcls() as trivial wrappers on top of GCR enc/dec routines which are made static. Adjust tests accordingly. Test output intentionally left unchanged. Change-Id: Icfbb2404e1a1d500243e2071173299b557369335
2018-12-23define LOGPFSM fmt only once, in LOGPFSMLSRCNeels Hofmeyr1-7/+4
Instead of duplicating the fmt and args in LOGPFSML and LOGPFSMLSRC, rather make LOGPFSML invoke LOGPFSMLSRC with __FILE__ and __LINE__. This is a cosmetic preparation for more tweaks coming up. Change-Id: I2f23c57ebfdb5355919c06ac5ded7732e3b17a97
2018-12-23vty: Make TCP port configurable and introduce telnet_init_defaultHolger Hans Peter Freyther2-0/+3
Extend the vty_bind_cmd VTY command to allow to optionally specify a port in addition to the IPv4 address. Introduce telnet_init_default to relieve client code from having to query the bind IPv4 address (and now the TCP port). Instead a client only needs to pass the default TCP port to use. Client code should use it like: int rc = telnet_init_default(ctx, priv, OSMO_VTY_PORT_SGSN); Change-Id: Id5fb2faaf4311bd7284ee870526a6f87b7e260f3
2018-12-21GSUP: add CHECK-IMEI messageOliver Smith1-0/+16
Implement necessary messages for Procedure Check_IMEI_VLR (TS 23.018 Chapter 7.1.2.9). This lets the VLR ask the EIR to check if an IMEI is valid. In the Osmocom stack, we don't have an EIR and this request will be handled by the HLR. We will be able to store the IMEI in the HLR as side-effect (OS#2541). This is roughly based on TS 29.002 8.7.1 MAP_CHECK_IMEI service, but only implements the bare minimum required IEs (imei and imei_result). Related: OS#3733 Change-Id: I085819df0ea7f3bfeb0cabebb5fd1942a23c6155
2018-12-21GSUP: add end marker to enum osmo_gsup_ieiOliver Smith1-0/+2
Simplify gsup_test.c by defining an end marker in gsup.h. No need to manually update the last element every time anymore. The C standard guarantees, that the end marker will have the last value plus one: "Each subsequent enumerator with no = defines its enumeration constant as the value of the constant expression obtained by adding 1 to the value of the previous enumeration constant." (From C99: 6.7.2.2 Enumeration specifiers) Change-Id: I2aab7245e209f0ebd2f33a83d4d181dd3339cb17
2018-12-20TLV: add convenience function for 1-byte valuesMax1-0/+16
Similar to existing 16 and 32 bit value helpers but simpler because we don't have to worry about alingment and endianness. Change-Id: Ic0a148bd04b8860e321f509fdcd913f688c8e920
2018-12-20TLV: fix doc copy-paste errorMax1-1/+1
Change-Id: I8aa79cab7505585de00ee2aaae125462108906e8
2018-12-20Use define for key buffersMax1-3/+3
Add corresponding spec. references and comments where appropriate. Change-Id: If5e2aad86eaecd8eada667b3488ba415d81c6312
2018-12-19rename CELL_IDENT_LAI_AND_LAC to CELL_IDENT_LAIStefan Sperling1-2/+3
The name "LAI AND LAC" makes no sense because a LAC is part of a LAI. Keep the old name available for API backwards compatibility. Change-Id: I2749cf75b7b45de0cd43cf4c696a6b6984f5a065 Related: OS#3124