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2018-08-01Deprecate ipa_ccm_idtag_parse() with ipa_ccm_id_{get,resp}_parse()Harald Welte1-2/+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
2018-07-30oap_client: Rename symbols with osmo_ prefixHarald Welte1-14/+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
2018-07-30import oap_client into libosmogsmHarald Welte2-0/+83
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
2018-07-2904.80: New gsm0480_gen_{reject,return_error}() functionsHarald Welte1-0/+2
Add functions to generate TS 04.80 (supplementary services) Reject and ReturnError components. Change-Id: I6e5ee39c3d03364f7833ec717593d5ddb0a4c5f9
2018-07-29USSD: Introduce gsm0480_gen_ussd_resp_7bit()Harald Welte1-0/+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
2018-07-29gsm0480: Factor out msgb allocation helper functionHarald Welte1-0/+2
Change-Id: If25b467481023eadaaf3f78157eceff4b81d24d2
2018-07-27GSMTAP: add SIM sub_typesKévin Redon1-1/+13
In SIMtrace 1 the ATR was sent the same way as an APDU. The ATR is not an APDU, and could be mis-interpreted as valid APDU. This change allows to make the difference between actual APDU and the ATR, but also adds sub_types for future SIMtrace 2 use cases. Change-Id: I5bd0dff5a4a90cfe96d9c4f3dec6657e1d85bf7a
2018-07-22gprs_ns.h: Declare gprs_ns_cause_str() which already existed in c fileHarald Welte1-0/+1
Change-Id: Ia95f0cc8d110f95814173bb5a1c11bd85d8cd533
2018-07-20add osmo_sockaddr_to_str_and_uint()Neels Hofmeyr1-0/+3
This came from osmo-bsc refactoring patch I82e3f918295daa83274a4cf803f046979f284366 https://gerrit.osmocom.org/#/c/osmo-bsc/+/9671/6/src/osmo-bsc/gsm_data.c@1708 Add regression test in utils_test.c. Change-Id: I1f2918418c38918c5ac70acaa51a47adfca12b5e
2018-07-16ctrl: Introduce ctrl_cmd_parse3 APIPau Espin Pedrol1-0/+1
Callers require to know whether the returned ERROR cmd was received or generated locally, in order to send it or do something with it locally. Related: OS#3394 Change-Id: Ide9170e5c31967c353f8fe4e8227e64130b91eae
2018-07-12gsm0808: Add value_string for encryption algorithmsPau Espin Pedrol1-0/+1
Change-Id: Iadf6460c438d02c53c2eaa9e42d51844ad28859a
2018-07-12gsm_08_08: gsm0808_permitted_speech does not have value stringsPhilipp Maier1-0/+4
enum gsm0808_permitted_speech does not have any value strings. Lets add value strings to make debugging easier. Change-Id: I5b5612a5df2758b0137a34c17f7c8c2b3f07c806
2018-07-12gsm_04_08: add function to get value stringPhilipp Maier1-0/+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
2018-07-02Don't enforce Python 2 for utilitiesVadim Yanitskiy1-1/+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
2018-06-29osmo_panic(): Annotate as __attribute__ ((noreturn))Harald Welte1-1/+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
2018-06-28Don't call abort() directly, always use osmo_panic()Harald Welte1-3/+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
2018-06-18add and tweak inter-BSC HO APINeels Hofmeyr2-0/+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
2018-06-16gsm 04.80: Add value_string for component type and op codeHarald Welte1-0/+10
Change-Id: I2615a88db5224d65f37c7cc505e183ec8b196e8a
2018-06-16gsup: Add value_string for Session State IEHarald Welte1-0/+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
2018-06-14Add function gprs_nsvc_state_appendDaniel Willmann1-0/+2
A common function to append the nsvc state from osmo-sgsn or osmo-gbproxy Change-Id: I7f0eaff7329ab98cad792d30b20ab053007aab85
2018-06-11gsup: Add osmo_gsup_get_err_msg_type() functionHarald Welte1-0/+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
2018-06-11gsm/gsm0480: refactor and expose gsm0480_parse_facility_ie()Vadim Yanitskiy1-0/+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
2018-06-11gsm/gsm0480.c: introduce gsm0480_extract_ie_by_tag()Vadim Yanitskiy1-0/+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
2018-06-09vty: Add logging_vty_add_deprecated_subsysHarald Welte1-0/+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
2018-06-08fsm: Change semantics of LOGPFSML() log-levelHarald Welte1-1/+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
2018-06-07fix gsm0808_permitted_speech(): don't return HR3 for TCH_F + AMRNeels Hofmeyr1-1/+1
Change-Id: Icca23940791f97fa64dbc3f2734270b99f9550c1
2018-06-06Add osmo_isqrt32() to compute 32bit integer square rootHarald Welte1-0/+2
Change-Id: I2b96db6e037e72e92317fec874877e473a1cf909
2018-06-02tlv: Add TLVP_VAL_MINLEN() to obtain value _if_ length is >= minimumHarald Welte1-0/+10
This is a combination of TLVP_VAP() and TLVP_GET_MINLEN() Change-Id: Ic5a177941219ebc3a3bceb3f68bdb3b2cacb934b
2018-06-02gsm0808: Add value_string for LCLS related IEsHarald Welte1-0/+15
Change-Id: I18d7a29496929c761aeaba9c0aee847befc13108
2018-05-31add osmo_fsm_inst_state_chg_keep_timer()Neels Hofmeyr1-0/+15
Change-Id: I3c0e53b846b2208bd201ace99777f2286ea39ae8
2018-05-31GSUP: introduce new messages for SS/USSD payloadsVadim Yanitskiy1-0/+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
2018-05-31GSUP: implement TCAP-like session managementVadim Yanitskiy1-0/+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
2018-05-30gsm0808: Add encoding functions for LCLS BSSMAP messagesHarald Welte1-0/+5
Change-Id: Ib83143e467df068b7d462a8e51d94b9d961ce18f
2018-05-30gsm_08_08.h: Add enum for LCLS config, control and statusHarald Welte1-0/+28
Change-Id: I775aba59942fb6f34fb31b71d2f0f2ac5c3ae831
2018-05-29ports.h: Add ctrl port for osmo-gbproxyDaniel Willmann2-1/+2
Change-Id: I46a1cef3013c9bbf9b5a6d64e83cd84568f2523c
2018-05-28Add enum gsm48_progress_descKeith1-0/+12
From GSM 04.08 Section 10.5.4.21 / Table 10.5.127 Change-Id: I6574e8808aaf39fad8026290aa2cc657734e18b5
2018-05-27add gsm0808_create_handover_request_ack()Neels Hofmeyr1-0/+4
Related: OS#2283 (inter-BSC Handover, BSC side, MT) Change-Id: I692292a06c7d66004404560dc4ed933ca9107f9b
2018-05-27add support for gsm0808 HANDOVER REQUIRED messageNeels Hofmeyr2-0/+59
Related: OS#2283 (inter-BSC Handover, BSC side, MO) Change-Id: Idb6dc3eab0282158a17091d97ed77c1e2e3eb3c2
2018-05-27add gsm0808_cell_id_to_list()Neels Hofmeyr1-0/+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
2018-05-26ctrl: Add doxygen API documentation; generate html from itHarald Welte1-6/+77
Closes: OS#3293 Change-Id: I8dc2f24d4bf557ff7bb0f2f46881f9f8d9d7f86f
2018-05-26Add enum gsm48_cause_coding from GSM 04.08 Section 10.5.4.11Keith1-0/+8
Change-Id: I3d9c8e117ad19f70a3273650d7c0f8280d7bdb9a
2018-05-24introduce vty_out_rate_ctr_group_fmt() functionStefan Sperling1-0/+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
2018-05-24mncc: properly export osmo_mncc_name()Harald Welte1-0/+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
2018-05-15fix spellingThorsten Alteholz1-2/+2
Change-Id: I3ac92217f83279d5f987ab34eb18b2e6cb1c7812
2018-05-11isdnhdlc: Port from kernel to userspaceHarald Welte2-23/+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
2018-05-11import isdn4linux HDLC code from linux kernelHarald Welte1-0/+82
I've been importing from 94d7dbf108813ea45a91e27e9a8bd231d5a23fa7 but the isdnhdlc code hasn't seen any changes since 2012 anyway. Change-Id: I3c58f9cb6921c2fdd0f2fcb11f622a0be88c7c63
2018-05-10Add osmo_timerfd_* functions for osmo_fd-wrapped timerfdHarald Welte1-0/+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
2018-05-08add gsm0808 channel enum to IE val conversion functionsNeels Hofmeyr1-0/+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
2018-05-07define a constant for the max length of called party BCD IEStefan Sperling1-0/+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
2018-05-04control_if: Avoid heap-use-after-free in osmo_wqueue_bfd_cbPau Espin Pedrol1-3/+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