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* 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
* Don't enforce Python 2 for utilitiesVadim Yanitskiy2018-07-021-1/+1
| | | | | | | | | | | The conv_gen.py utility was tested against both Python 2 and 3, so there is no need to enforce Python 2. Also, having: #!/usr/local/bin/python{2|3} is a bad idea, because Python may be installed in a different location. Change-Id: I6007d481047b584db13d6eda70fb99f11f9ddaa1
* osmo_panic(): Annotate as __attribute__ ((noreturn))Harald Welte2018-06-291-1/+1
| | | | | | | | | | In Change-Id I5a70eb65952cbc329bf96eacb428b07a9da32433 we redirected all OSMO_ASSERT() via osmo_panic(). However, this caused various applications to have build failures, as OSMO_ASSERT() now appeared to be able to return to the call site. Let's inform the compiler explicitly that there's no return from osmo_panic(). Change-Id: I8adf4c7b0ee6a4581cef8dd4e9f6a1dfde70ee55
* Don't call abort() directly, always use osmo_panic()Harald Welte2018-06-281-3/+2
| | | | | | | | | A loooong time ago, we introduced osmo_panic() as a wrapper around abort(). The advantage is, that this wrapper can be overridden, and that it will also work in embedded (bare iron) targets, where the abort simply translates to an infinite loop. Change-Id: I5a70eb65952cbc329bf96eacb428b07a9da32433
* 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
* Add function gprs_nsvc_state_appendDaniel Willmann2018-06-141-0/+2
| | | | | | A common function to append the nsvc state from osmo-sgsn or osmo-gbproxy Change-Id: I7f0eaff7329ab98cad792d30b20ab053007aab85
* 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
* vty: Add logging_vty_add_deprecated_subsysHarald Welte2018-06-091-0/+1
| | | | | | | | | | | | | This function permits the user to register deprecated log categories, which will ensure that if log categories are removed from a program, old config files will still load. We simply dynamically allocate a cmd_element and install it at CFG_LOG_NODE. Not registering it at VIEW_NODE or ENABLE_NODE ensures that it's not accessible from the interactive VTY, but only from the config file / configure node. Change-Id: I171f62ea2dc565b3a6c3eecd27fb7853e2529598
* fsm: Change semantics of LOGPFSML() log-levelHarald Welte2018-06-081-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The general idea about each osmo_fsm_instance having a separate log-level was to be able to selectively increase/show/enable logging for some FSM instances (e.g. of a particular subscriber) while maintaining normal logging verbosity for all other instances of the same FSM. The introduction of LOGPFSML() in Change-Id If295fdabb3f31a0fd9490d1e0df57794c75ae547 broke that idea, as it would use a compile-time log level, irrespective of the osmo_fsm_inst.log_level setting of the given instance. Let's combine the two: Use the explicit level stated at LOGPFSML(), _unless_ this instance has a higher log_level configured. This way, all FSMs should normally be created with osmo_fsm_inst.log_level == LOGL_DEBUG. At that point LOGPFSM() statements would be rendered at debug level, typically below the threshold of most logging configurations. Code that has explicit higher log levels like LOGPFSML(fi, LOGL_ERROR) would always be printed, as it is an error message. And if we now increase the osmo_fsm_inst.log_level, then even the normal LOGPFSM() statements would suddenly be logged at that higher level, selectively increasing log verbosity - like originally intended. Change-Id: I1820f04d0c6f5d5ff08eb95b8c0e88764534491a
* fix gsm0808_permitted_speech(): don't return HR3 for TCH_F + AMRNeels Hofmeyr2018-06-071-1/+1
| | | | Change-Id: Icca23940791f97fa64dbc3f2734270b99f9550c1
* Add osmo_isqrt32() to compute 32bit integer square rootHarald Welte2018-06-061-0/+2
| | | | Change-Id: I2b96db6e037e72e92317fec874877e473a1cf909
* 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
* add osmo_fsm_inst_state_chg_keep_timer()Neels Hofmeyr2018-05-311-0/+15
| | | | Change-Id: I3c0e53b846b2208bd201ace99777f2286ea39ae8
* 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
* ports.h: Add ctrl port for osmo-gbproxyDaniel Willmann2018-05-292-1/+2
| | | | Change-Id: I46a1cef3013c9bbf9b5a6d64e83cd84568f2523c
* 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
* ctrl: Add doxygen API documentation; generate html from itHarald Welte2018-05-261-6/+77
| | | | | Closes: OS#3293 Change-Id: I8dc2f24d4bf557ff7bb0f2f46881f9f8d9d7f86f
* Add enum gsm48_cause_coding from GSM 04.08 Section 10.5.4.11Keith2018-05-261-0/+8
| | | | Change-Id: I3d9c8e117ad19f70a3273650d7c0f8280d7bdb9a
* introduce vty_out_rate_ctr_group_fmt() functionStefan Sperling2018-05-241-0/+2
| | | | | | | | | | | | This new function can be used to print a rate counter group according to a format string. The intention is to generalize and replace manual printing of counters as implemented for the 'show statistics' VTY command of osmo-bsc. Related: OS#3245 Related: osmo-bsc commit 71d524c059c5a5c90e7cb77d8a2134c1c68b9cde (g#9217) Change-Id: Idb3ec12494ff6a3a05efcc8818e78d1baa6546bd
* 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
* isdnhdlc: Port from kernel to userspaceHarald Welte2018-05-112-23/+26
| | | | | | | | | | | * prefix all symbols/constants with osmo_ * use stdint.h types instead of kernel types * use Doxygen API documentation * use Osmocom CRC16-CCITT functions * use Osmocom bit-reversal functions * integrate with Automake Change-Id: I109085ab3e412c20b19cd42fb7137aa0e4167542
* import isdn4linux HDLC code from linux kernelHarald Welte2018-05-111-0/+82
| | | | | | | I've been importing from 94d7dbf108813ea45a91e27e9a8bd231d5a23fa7 but the isdnhdlc code hasn't seen any changes since 2012 anyway. Change-Id: I3c58f9cb6921c2fdd0f2fcb11f622a0be88c7c63
* Add osmo_timerfd_* functions for osmo_fd-wrapped timerfdHarald Welte2018-05-101-0/+7
| | | | | | | | | | | | | | | Linux offers file descriptor based periodic (interval) timers, which can achieve a higher precision than our userspace based timers and which can be slave'd to CLOCK_MONOTINIC or other clock sources. Let's add some code for osmo_fd wrapped versions that integrate well with our select() abstraction. The code has been used in osmo-bts-trx since June 2017 (change-id I51b19adde14ebb7ef3bb863d45e06243c323e22e), and I'm just renaming and moving it to libosmocore here. After a merge, the osmo-bts implementations can be removed in favor if this one. Change-Id: Ibeffba7c997252c003723bcd5d14122c4ded2fe7
* 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
* control_if: Avoid heap-use-after-free in osmo_wqueue_bfd_cbPau Espin Pedrol2018-05-041-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Imagine following scenario: 1- client connects to CTRL iface, a new conn is created with POLL_READ enabled. 2- A non-related event happens which triggers a TRAP to be sent. As a result, the wqueue for the conn has now enabled POLL_WRITE, and message will be sent next time we go through osmo_main_select(). 3- At the same time, we receive the GET cmd from the CTRL client, which means POLL_READ event will be also triggered next time we call osmo_main_select(). 4- osmo_main_select triggers osmo_wqueue_bfd_cb with both READ/WRITE flags set. 5- The read_cb of wqueue is executed first. The handler closes the CTRL conn for some reason, freeing the osmo_fd struct and returns. 6- osmo_qeueue_bfd_cb keeps using the already freed osmo_fd and calls write_cb. So in step 6 we get a heap-use-after-free catched by AddressSanitizer: 20180424135406115 DLCTRL <0018> control_if.c:506 accept()ed new CTRL connection from (r=10.42.42.1:53910<->l=10.42.42.7:4249) 20180424135406116 DLCTRL <0018> control_cmd.c:378 Command: GET bts.0.oml-connection-state 20180424135406117 DLINP <0013> bts_ipaccess_nanobts.c:417 Identified BTS 1/0/0 20180424135406118 DNM <0005> abis_nm.c:1628 Get Attr (bts=0) 20180424135406118 DNM <0005> abis_nm.c:1628 Get Attr (bts=0) 20180424135406118 DCTRL <000e> osmo_bsc_ctrl.c:158 BTS connection (re)established, sending TRAP. 20180424135406119 DLCTRL <0018> control_if.c:173 close()d CTRL connection (r=10.42.42.1:53910<->l=10.42.42.7:4249) ================================================================= ==12301==ERROR: AddressSanitizer: heap-use-after-free on address 0x611000003e04 at pc 0x7f23091c3a2f bp 0x7ffc0cb73ff0 sp 0x7ffc0cb73fe8 READ of size 4 at 0x611000003e04 thread T0 #0 0x7f23091c3a2e in osmo_wqueue_bfd_cb /home/osmocom-build/jenkins/workspace/osmo-gsm-tester_build-osmo-bsc/libosmocore/src/write_queue.c:65 #1 0x7f23091ad5d8 in osmo_fd_disp_fds /home/osmocom-build/jenkins/workspace/osmo-gsm-tester_build-osmo-bsc/libosmocore/src/select.c:216 #2 0x7f23091ad5d8 in osmo_select_main /home/osmocom-build/jenkins/workspace/osmo-gsm-tester_build-osmo-bsc/libosmocore/src/select.c:256 #3 0x56538bdb7a26 in main /home/osmocom-build/jenkins/workspace/osmo-gsm-tester_build-osmo-bsc/osmo-bsc/src/osmo-bsc/osmo_bsc_main.c:532 #4 0x7f23077532e0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x202e0) #5 0x56538bdb8999 in _start (/home/jenkins/workspace/osmo-gsm-tester_run-prod/trial-896/inst/osmo-bsc/bin/osmo-bsc+0x259999) Fixes: OS#3206 Change-Id: I84d10caaadcfa6bd46ba8756ca89aa0badcfd2e3
* 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
* msgb: msgb_pull: Abort when pulling more than avail sizePau Espin Pedrol2018-04-111-0/+3
| | | | Change-Id: I512ff2035ae7a929e6c96df82938cc1ddbcc4e2a
* msgb: msgb_get: Drop unneeded tmp varPau Espin Pedrol2018-04-111-2/+1
| | | | Change-Id: I27bb2ab59408c9cd1363b3b5acb2263128c55732
* 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
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