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* Deprecate ipa_ccm_idtag_parse() with ipa_ccm_id_{get,resp}_parse()Harald Welte2018-08-011-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the past, the function ipa_ccm_idtag_parse() was used to parse the payload of IPA CCM ID RESP packets. However, the function was based on a possible misunderstanding of the message encoding, and callers actually counted the first (upper) length nibble as part of the header and passed a pointer to the second (lower) length nibble of the first TLV into this function. As such, it was unfixable, and had to be replaced with a new function called ipa_ccm_id_resp_parse(). At the same time, we also add ipa_ccm_id_get_parse() to parse the slightly different format of the IPA CCM ID GET payload. We can never be 100% sure what is "correct", as our understanding of the protocol is entirely based on protocol analysis, without any official documentation available. This patch also introduces unit test coverage for both of the new functions. Revert "ipa: Add libosmogsm.map entry for ipa_ccm_idtag_parse_off" This reverts commit 7f31c90b80c08fbfe2d84d70d397402fdb38b94c. Revert "ipa: Properly parse LV stream of a ID_GET request" This reverts commit f558ed4bb9c0f00997b8f97c2b251a574c1a64c4. It introduced a function/behavior that was not originally intended: The parse of IPA CCM ID GET (8bit length followed by 1 byte tag and variable-length payload) instead of the IPA CCM ID RESP (16bit length followed by 1 byte tag and variable-length payload). Change-Id: I1834d90fbcdbfcb05f5b8cfe39bfe9543737ef8f
* oap_client: Rename symbols with osmo_ prefixHarald Welte2018-07-301-14/+14
| | | | | | | | As we're moving this to a common/shared library now, we need to use the osmo_ namespace prefix for symbol names, struct/type names and constants. Change-Id: Ie36729996abd30b84d1c30a09f62ebc6a9794950
* import oap_client into libosmogsmHarald Welte2018-07-301-0/+82
| | | | | | | | | This imports the code from osmo-msc 6afef893e17bce67e4d4119acd34d480ed03ba77 with minimal changes to make it compile. Symbol renaming to osmo_ prefix is done separately in a follow-up patch to have a as-clean-as-possible import first. Change-Id: I9bc38102318da02d1fe46ef516df3cfd6bf8e3da
* 04.80: New gsm0480_gen_{reject,return_error}() functionsHarald Welte2018-07-291-0/+2
| | | | | | | Add functions to generate TS 04.80 (supplementary services) Reject and ReturnError components. Change-Id: I6e5ee39c3d03364f7833ec717593d5ddb0a4c5f9
* USSD: Introduce gsm0480_gen_ussd_resp_7bit()Harald Welte2018-07-291-0/+1
| | | | | | | | | | Contrary to the existing gsm0480_create_ussd_resp(), the new function only generates the value part of the FACILITY IE, and not the IE Tag/Length or the 04.08 L3 header. This is needed in the context of GSUP-encapsulated USSD, as here we don't work with L3 messages, but only pass on the FACILITY IE value. Change-Id: Ide240279240322f643e142229eb7829f538c6314
* gsm0480: Factor out msgb allocation helper functionHarald Welte2018-07-291-0/+2
| | | | Change-Id: If25b467481023eadaaf3f78157eceff4b81d24d2
* gsm0808: Add value_string for encryption algorithmsPau Espin Pedrol2018-07-121-0/+1
| | | | Change-Id: Iadf6460c438d02c53c2eaa9e42d51844ad28859a
* gsm_08_08: gsm0808_permitted_speech does not have value stringsPhilipp Maier2018-07-121-0/+4
| | | | | | | enum gsm0808_permitted_speech does not have any value strings. Lets add value strings to make debugging easier. Change-Id: I5b5612a5df2758b0137a34c17f7c8c2b3f07c806
* gsm_04_08: add function to get value stringPhilipp Maier2018-07-121-0/+2
| | | | | | | The value string table gsm48_chan_mode_names[] lacks a function to get the value string by a value. Lets add one. Change-Id: I0757bcc278c140e18249e35864338e19cdaa3cf7
* add and tweak inter-BSC HO APINeels Hofmeyr2018-06-182-0/+42
| | | | | | | | | | | | | | | | | | Add: gsm0808_create_handover_detect() gsm0808_create_handover_complete() gsm0808_create_handover_failure() To existing structs gsm0808_old_bss_to_new_bss_info and gsm0808_handover_required, add a final 'more_items' flag that makes future extensions API and ABI compatible. Fix the msgb string for Handover Request Ack. Extend some API doc comments. Related: OS#2283 (inter-BSC Handover, BSC side, MT) Change-Id: I03ee7ce840ecfa0b6a33358e7385528aabd4873f
* gsm 04.80: Add value_string for component type and op codeHarald Welte2018-06-161-0/+10
| | | | Change-Id: I2615a88db5224d65f37c7cc505e183ec8b196e8a
* gsup: Add value_string for Session State IEHarald Welte2018-06-161-0/+5
| | | | | | | | In Change-Id I1cee271fed0284a134ffed103c0d4bebbcfde2a8 we added support for a new session state IE, but we didn't add any value_string array for string conversion of it. Let's fix this. Change-Id: I3d9f087786dc37c42498fa9a2be07483ec93ba7b
* gsup: Add osmo_gsup_get_err_msg_type() functionHarald Welte2018-06-111-0/+1
| | | | | | | | This function can be used to resolve the error message type for a given message type. Can be used by generic error handlers that work for any incoming message type. Change-Id: Ic637bec53dd7fe3ec83da99b49b4eae34d5602b2
* gsm/gsm0480: refactor and expose gsm0480_parse_facility_ie()Vadim Yanitskiy2018-06-111-0/+2
| | | | | | | | | | | | | | This function can be used when there is only a part of GSM 04.80 message available - Facility IE, e.g. when a message is carried over GSUP/MAP. Let's expose it. Refactoring includes the following: - adding the 'gsm0480_' prefix; - correcting inverted return value; - cosmetic code style changes. Change-Id: I623c39ffbe6cdee65eade8435a2faa04d0da193e
* gsm/gsm0480.c: introduce gsm0480_extract_ie_by_tag()Vadim Yanitskiy2018-06-111-0/+2
| | | | | | | | In some cases, there is no need to parse the whole message, e.g. during the conversion from DTAP to GSUP/MAP. This function can be used to extract given IE from a message. Change-Id: I3989d061903352473305f80712f1a1560d05df3d
* fix gsm0808_permitted_speech(): don't return HR3 for TCH_F + AMRNeels Hofmeyr2018-06-071-1/+1
| | | | Change-Id: Icca23940791f97fa64dbc3f2734270b99f9550c1
* tlv: Add TLVP_VAL_MINLEN() to obtain value _if_ length is >= minimumHarald Welte2018-06-021-0/+10
| | | | | | This is a combination of TLVP_VAP() and TLVP_GET_MINLEN() Change-Id: Ic5a177941219ebc3a3bceb3f68bdb3b2cacb934b
* gsm0808: Add value_string for LCLS related IEsHarald Welte2018-06-021-0/+15
| | | | Change-Id: I18d7a29496929c761aeaba9c0aee847befc13108
* GSUP: introduce new messages for SS/USSD payloadsVadim Yanitskiy2018-05-311-0/+11
| | | | | | | | | | | | | | | | | In order to be able to transfer SS/USSD messages via GSUP, this change introduces the following new message types: - OSMO_GSUP_MSGT_PROC_SS_*, and the following new IE: - OSMO_GSUP_SS_INFO_IE which represents an ASN.1 encoded MAP payload coming to/from the mobile station 'as is', without any transcoding. Change-Id: Ie17a78043a35fffbdd59e80fd2b2da39cce5e532 Related: OS#1597
* GSUP: implement TCAP-like session managementVadim Yanitskiy2018-05-311-0/+21
| | | | | | | | | | | | | | | | | | | | Unlike TCAP/MAP, GSUP is just a transport layer without the dialogue/context. This prevents us from having session based communication, required e.g. for USSD. But we can emulate TCAP dialogue by adding additional IEs, which would allow to relate each message to a particular session. This change introduces the following IEs: - OSMO_GSUP_SESSION_ID_IE, - OSMO_GSUP_SESSION_STATE_IE, which optionally can be used to indicate that the message is related to a session with given ID, and to manage session state, i.e. initiate, continue, and finish. Change-Id: I1cee271fed0284a134ffed103c0d4bebbcfde2a8 Related: OS#1597
* gsm0808: Add encoding functions for LCLS BSSMAP messagesHarald Welte2018-05-301-0/+5
| | | | Change-Id: Ib83143e467df068b7d462a8e51d94b9d961ce18f
* gsm_08_08.h: Add enum for LCLS config, control and statusHarald Welte2018-05-301-0/+28
| | | | Change-Id: I775aba59942fb6f34fb31b71d2f0f2ac5c3ae831
* Add enum gsm48_progress_descKeith2018-05-281-0/+12
| | | | | | | From GSM 04.08 Section 10.5.4.21 / Table 10.5.127 Change-Id: I6574e8808aaf39fad8026290aa2cc657734e18b5
* add gsm0808_create_handover_request_ack()Neels Hofmeyr2018-05-271-0/+4
| | | | | Related: OS#2283 (inter-BSC Handover, BSC side, MT) Change-Id: I692292a06c7d66004404560dc4ed933ca9107f9b
* add support for gsm0808 HANDOVER REQUIRED messageNeels Hofmeyr2018-05-272-0/+59
| | | | | Related: OS#2283 (inter-BSC Handover, BSC side, MO) Change-Id: Idb6dc3eab0282158a17091d97ed77c1e2e3eb3c2
* add gsm0808_cell_id_to_list()Neels Hofmeyr2018-05-271-0/+1
| | | | | | | | The idea is to be able to add a gsm0808_cell_id to a gsm0808_cell_id_list2: first convert it to a list, then re-use gsm0808_cell_id_list_add(). It will be used by osmo-bsc to manage neighbor-BSS cell identifiers from VTY. Change-Id: Ibf746ac60b1b1e920baf494b396658a5ceabd788
* Add enum gsm48_cause_coding from GSM 04.08 Section 10.5.4.11Keith2018-05-261-0/+8
| | | | Change-Id: I3d9c8e117ad19f70a3273650d7c0f8280d7bdb9a
* mncc: properly export osmo_mncc_name()Harald Welte2018-05-241-0/+5
| | | | | | | For some strange reason, the osmo_mncc_name() inline function was not in the mncc.h header, but in the mncc.c file. Let's fix that. Change-Id: I2c3666510c981dffa4ba25bed517fd7ebd1250f5
* fix spellingThorsten Alteholz2018-05-151-2/+2
| | | | Change-Id: I3ac92217f83279d5f987ab34eb18b2e6cb1c7812
* add gsm0808 channel enum to IE val conversion functionsNeels Hofmeyr2018-05-081-0/+107
| | | | | | | | | | | | | | | | | Add: - gsm0808_current_channel_type_1() - gsm0808_permitted_speech() - gsm0808_chosen_channel() - gsm0808_channel_type_name() gsm0808_permitted_speech() is moved from osmo-bsc's bssap_speech_from_lchan(); gsm0808_chosen_channel() is moved from osmo-bsc's lchan_to_chosen_channel(); Rationale: will be re-used by inter-BSC handover, makes sense to keep with the other gsm0808 utils. Related: OS#2283 (inter-BSC handover, BSC side) Change-Id: I8a3cc5d4548e9a78d945d54c69ccced251edcec9
* define a constant for the max length of called party BCD IEStefan Sperling2018-05-071-0/+1
| | | | | | | | | | | | According to TS 24.008 10.5.4.7 the called party BSC number IE has a maximum length of 43 octets. This length is assumed inside osmo-hlr with a magic number: uint8_t msisdn_enc[43]; /* TODO use constant; TS 24.008 10.5.4.7 */ This change makes libosmocore provide a constant which osmo-hlr can use. Change-Id: Ia0bf6ceadcac38a8c75d166402b54058e5c6c6d4
* gsm_08_58.h: introduce RSL_IE_ERIC_PAGING_GROUPAlexander Couzens2018-04-231-0/+1
| | | | | | | | Ericsson supports a RSL command to page and immediate assign as single command. For paging a MS the BTS must know the paging group. Change-Id: I9194500e307ad69f8da07510bc965a7a5cd82a2a
* gsm_08_58.h: Add Ericsson vendor-specific RSL message typesPau Espin Pedrol2018-04-211-0/+5
| | | | | | | We are alredy doing the same way for ip.access and siemens ones, and this way we avoid using the hardcoded value in osmo-bsc. Change-Id: I7cb65f3ff1cfdbe4eee97b7545bcd13a38c72e25
* add gsm0808_cell_{id,id_list}_name() and friendsNeels Hofmeyr2018-04-182-1/+13
| | | | | | | | | | | | | | | | | | | | Provide comprehensive API to obtain string representations of Cell Identifiers and -Lists. Change gsm0808_test.c to use the new functions (which simplifies the output a bit), so that we don't duplicate printing code in gsm0808_test.c, and so that the not-so-trivial printing code is also tested. In gsm0808_test, also test gsm0808_cell_id_list_name_buf()'s return value and truncation behavior. The rationale for gsm0808_cell_id_list_name(), i.e. printing an entire list of cell identifiers, is that even though the maximum is 127 elements, a list of more than a few elements is hardly ever expected in practice (even more than one element isn't actually expected: either "entire BSS" or a single LAC). It is thus useful to log the entire list when it shows up in Paging and Handover. Change-Id: I9b2106805422f96c5cc96ebb9178451355582df3
* tlv: add TLV_GET() and TLV_GET_MINLEN()Neels Hofmeyr2018-04-181-0/+21
| | | | | | | | | | | | | | | | | | | | Rationale: so far we use code like if (TLVP_PRESENT(&tp, VERY_LONG_ENUM_VALUE_NAME_THAT_NEVER_ENDS)) { val = TLVP_VAL(&tp, VERY_LONG_ENUM_VALUE_NAME_THAT_NEVER_ENDS); len = TLVP_LEN(&tp, VERY_L0NG_ENUM_VALUE_NAME_TH4T_NEVER_EMDS); } This is a) very long and b) prone to picking the wrong name one of the three times, which would use the wrong length or val without necessarily being noticed. A safer and shorter, more readable pattern is: struct tlv_p_entry *e = TVLP_GET(&tp, VERY_LONG_ENUM_VALUE_NAME_THAT_NEVER_ENDS); if (!e) return -ENOENT; hexdump(e->val, e->len); Change-Id: I445de17fc2daa3ab051f5708dd0cc185b23dc048
* protocol/gsm_04_08.h: drop incorrect GSM48_PDISC_USSDVadim Yanitskiy2018-04-171-1/+0
| | | | | | | | | | | | According to the GSM TS 04.07, section 11.2.3.1.1 "Protocol discriminator", bits 1 to 4 of the first octet of a standard L3 message contain the protocol discriminator IE. Meanwhile, the GSM48_PDISC_USSD represents value 0x11, i.e. 0b10001, that requires 5 bits, and moreover it is not documented anywhere. Let's drop it. Change-Id: Ic4eb8a6db4ff1dfd535bd0c84e7acf1908422f64
* add gsm0808_{enc,dec}_cell_idNeels Hofmeyr2018-04-131-12/+21
| | | | | | | | | | | | | | | | | | | Clarify semantics and micro-optimise for the case of single Cell Identifer IEs. Test in gsm0808_test.c So far we have gsm0808_enc_cell_id_list2(), but there also exist instances of single Cell Identifiers (3GPP TS 48.008 3.2.2.17). It is possible to decode the same using the cell identifier list API, but this forces the caller to also keep a full struct gsm0808_cell_id_list2 with all its 127 entries around. E.g. for handover, there are two Cell Identifiers (Serving and Target); I'd need two full cell id lists for each, and these would be dynamically allocated for each handover operation, whether it uses them or not. Related: OS#2283 (inter-BSC HO, BSC side) Change-Id: I9f9c528965775698ab62ac386af0516192c4b0cc
* add tlv_parse2(), capable of multiple instances of the same IENeels Hofmeyr2018-04-131-0/+3
| | | | | | | | | | | | | | | Allow passing multiple struct tlv_parsed in an array, to allow parsing as many repeated IEs as are expected by the caller. From tlv_parse(), call tlv_parse2() with dec_multiple = 1 to yield the previous behavior. tlv_parse() remains valid API. An example of multiple IEs is the BSSMAP Handover Request, containing Cell Identifier (Serving) and Cell Identifier (Target), both defined by 3GPP TS 48.008 3.2.2.17 with identical IE tags; both are mandatory. Related: OS#2283 (inter-BSC HO, BSC side) Change-Id: Id04008eaf0a1cafdbdc11b7efc556e3035b1c84d
* add gsm0808_cell_id_list_add() to combine two cell identifier listsNeels Hofmeyr2018-04-131-0/+1
| | | | | | | | | | | | | This will be used by the upcoming neighbor_ident API in osmo-bsc, where the vty interface allows composing neihbor BSS cell identifier lists, and we want to allow adding individual items from individual user commands. It will also be useful to accumulate cell identifiers in case a subscriber sees multiple alternative cells from a neighboring BSS, and we want to pass these on to the MSC in a Handover Required. Related: OS#2283 (inter-BSC HO, BSC side) Change-Id: I5781f5fa5339c92ab2e2620489b002829d206925
* add osmo_cgi_name()Neels Hofmeyr2018-04-131-0/+2
| | | | | | | This will be used by cell idenitifier list code, like upcoming neighbor_ident VTY in osmo-bsc and regression tests. Change-Id: Iebc5cdf61b697b1603900993fc265af3eca0cedf
* deprecate PLMN de-/coding functions incapable of 3-digit MNC with leading zerosNeels Hofmeyr2018-04-102-7/+12
| | | | | | | | | All our projects have seen patches to move to 3-digit MNC handling. Furthermore, since our builds no longer break from deprecation warnings, I shall no longer refrain from deprecating old API. Change-Id: I55dfaf7ce74870de44120b26c42d45bb7b184341
* add gsm48_reject_value_namesNeels Hofmeyr2018-04-091-0/+4
| | | | | | | | | | | | | | There seems to be quite some confusion / overlap between enum gsm48_reject_value, gsm48_gsm_cause and gsm48_gmm_cause. I tried to go with gsm48_gsm_cause_names[], but e.g. GSM48_REJECT_CONGESTION is not represented. Instead of attempting to mix/merge those enums, provide a separate value string array for enum gsm48_reject_value. This will be used by osmo-msc's libvlr (refactoring of FSM result handling), I27bf8d68737ff1f8dc6d11fb1eac3d391aab0cb1. Change-Id: I6661f139e68a498fb1bef10c266c2f064b72774a
* gsm0480: copy the raw USSD data, its DCS and lengthVadim Yanitskiy2018-04-041-0/+12
| | | | | | | | | | | | | | | | | | As it was already documented before, the 'ss_request' struct has a rudiment of deprecated 'ussd_request' struct - the 'ussd_text' field. It represents the data either of an INVOKE component, either of a RETURN_RESULT component, encoded as ASCII in case if DCS is 0x0f (i.e. decoded by the code itself), otherwise raw bytes 'as is'. Previously, there was no possibility to distinguish between ASCII and raw bytes with different DCS. Moreover, the payload decoding is not desired in some cases. Let's introduce the new fields, which will carry the raw unmodified payload, its length and DCS (Data Coding Scheme). Change-Id: Ia193d175021e145bb3b131290231f307dbefc64a
* gsm0480: document the 'ss_request' structureVadim Yanitskiy2018-04-041-0/+31
| | | | Change-Id: I22144dd759e0c1bb1965574b7ddd676606e5d6b7
* gsm0808: Add value strings for BSSMAP cause codesPhilipp Maier2018-03-291-0/+1
| | | | | | | | | | libosmocore has no value strings for BSSMAP cause codes yet. - Add value strings for BSSMAP cause codes and a function to retrieve them Change-Id: I313dd8d7b06374e1e35ddc18b7a42562d9e25d45 Related: OS#1609
* gsm_08_08: correct speech codec defaultsPhilipp Maier2018-03-231-4/+4
| | | | | | | | | | | | The speech codec defaults are not correct. The defaults recommended in 3GPP TS 28.062, Table 7.11.3.1.3-2 are limited by 3GPP TS 48.008, Section 3.2.2.103. Some defaults are actually reserved for future use. Also the endianess of the 16 bit values is reversed. - correct values so that they match the specification - transmit bytes in the correct endianess Change-Id: I6c3a34d39a375d71c4128fd38f06629e8b98b100
* abis_nm: Introduce abis_nm_dump_foh()Harald Welte2018-03-171-5/+3
| | | | | | | | This is a more modern way of printing the Abis OML Formatted Object Header, without assuming that it would be used in a log statement or prescribing the log level to be used. Change-Id: I9b2c2afec28882b817d104d5b062651ade7aadd8
* support for more cell ID list types in libosmocoreStefan Sperling2018-03-134-4/+46
| | | | | | | | | | | | | | | | | | | | | | | | Introduce gsm0808_dec_cell_id_list2() with supports additional types of cell identifier lists. The new parsing routines are based on similar routines used by the paging code in osmo-bsc's osmo_bsc_bssap.c. Likewise, introduce gsm0808_enc_cell_id_list2() with support for the same additional types of cell identifier lists. The old API using struct gsm0808_cell_id_list is deprecated. The previous definition was insufficient because it assumed that all decoded cell ID types could be represented with a single uint16_t. It was declared in a GSM protocol header (gsm/protocol/gsm_08_08.h) despite being a host-side representation of data in an IE. The only user I am aware of is in osmo-msc, where this struct is used for one local variable. osmo-msc releases >= 1.1.0 make use of this API. While here, fix a small bug in a test: test_gsm0808_enc_dec_cell_id_list_bss() set the cell ID type to 'LAC' but obviously wants to use type 'BSS'. Change-Id: Ib7e754f538df0c83298a3c958b4e15a32fcb8abb Related: OS#2847
* features: define osmo_bts_*_feature() as static inlinePhilipp Maier2018-03-051-2/+2
| | | | | | | | | | | | | | The functions osmo_bts_set_feature() and osmo_bts_has_feature() are currently defined as inline. Since inline is a hinting, the compiler might choose not to inline the function. This eventually leads to linker problems because the function is then defined multiple times. - use "static inline" instead of "inline" only. This patch is a follow up patch to Change Id 680acae725b2b8dda2f239ff20073306fdfb3f6e Change-Id: Iddd97415a17b06b69f69ddca2e2e296eb2f23a89
* gsm23003: add osmo_mcc_from_str()Neels Hofmeyr2018-03-051-0/+11
| | | | | | | | | | I found myself often using osmo_mnc_from_str() to also decode an MCC and be strict about it, but each time I felt the need to comment like "using osmo_mnc_from_str() also for MCC". Rather formalize this properly. Use a static inline function, no need to add more symbols to libosmo-gsm. Change-Id: I020a4f11791c61742a3d795f782805f7b7e8733e
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