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* cosmetic: logging: if color is disabled, don't print ""Neels Hofmeyr2018-01-171-5/+6
| | | | | | | | | | | | If color output is disabled, skip the empty snprintf() to (not) clear the ANSI color. Also, no need to use a format string of "%s", just pass the string constant directly. That is a micro optimisation as well as clarification of the code. Change-Id: Ie7cb06de160830d2f8ee5718246c0fe311f68d49
* fsm: fix double llist_del in osmo_fsm_inst_term()Philipp Maier2018-01-171-2/+3
| | | | | | | | | | | llist_del(&fi->proc.child) is executed always, regardless whether a parent is configured or not. This may lead into a double llist_del when the child has been previously unlinked. - check if fi->proc.parent is set, and only then execute llist_del(&fi->proc.child); Change-Id: I4b33d508c8a11b72fbf30125088a882894d9e6ac
* fix -Werror build: logging.c: always use literal with snprintfNeels Hofmeyr2018-01-171-1/+1
| | | | | | | | | | | | | | | | | | A recent commit added an snprintf that passes a pointer to a literal directly to snprintf. Since passing pointers to printf formats is a vulnerability in case user supplied data may be passed in the format, modern compilers warn against that, which breaks our -Werror builds. Even though this is just a pointer to a literal, it needs to be an actual literal to make compilers happy. Use printf("%s", c) instead of printf(c). Note that our current build slave's gcc does not enforce that yet, while newer compilers do. logging.c:338:4: warning: format not a string literal and no format arguments [-Wformat-security] ret = snprintf(buf + offset, rem, c_subsys); Change-Id: Ifa4eb8a9fab66dcd987986065351b4a06421f1ec
* logging: color the log category according to levelNeels Hofmeyr2018-01-171-1/+5
| | | | | | | | | | | | | | When log_set_use_color() is enabled, color the log category string according to the log level. The log line before and after the log category is printed in the category's configured color. ERROR and FATAL are red, NOTICE is yellow, INFO is green and DEBUG is blue. The default behavior remains unchanged; If color is enabled, the category string will now always be colored in the log level color, not the log category color, and will stand out from the rest of the line. Change-Id: I84f886ac880e9056a666bbb231ae06cbaaf65f44
* logging: color the log levelNeels Hofmeyr2018-01-171-4/+26
| | | | | | | | | | | | When log_set_use_color() is enabled, color the log level string according to the log level. The log line before and after the log level is printed in the category's color. ERROR and FATAL are red, NOTICE is yellow, INFO is green and DEBUG is blue. The default behavior remains unchanged. Change-Id: If2e52ae9ab83e538e04321c338e3fdffb2c7f9d3
* logging: add ability to log the log-level with API and vtyNeels Hofmeyr2018-01-172-0/+38
| | | | | | | | Log the log level string after the category name, if enabled. The default behavior remains unchanged. Change-Id: Ie6be365cfa6aeabdf115bff19bac198440c9adf1
* gsm0480: parse optional IEs for RELEASE COMPLETE messageVadim Yanitskiy2018-01-171-1/+5
| | | | | | | | According to GSM 04.80 section 2.5 "Release complete", a message of the mentioned type may contain optional IEs, such as Cause and Facility. Let's parse them. Change-Id: Ib8fc1f6bae472b0b264b6158f372b6cce255b222
* gsm0480: parse all SS info elements in a messageVadim Yanitskiy2018-01-171-1/+10
| | | | | | | Some SS messages (e.g. RELEASE COMPLETE) may contai multiple IEs (Information Elements). Let's parse them all. Change-Id: I20cc59c25fdbda176bcf76437174cda829518d60
* gsm0480: correct parse_ss_info_elements() declarationVadim Yanitskiy2018-01-171-1/+1
| | | | Change-Id: I64df293188908c7eb10a61941db76656340d3a8e
* gsm0480: refactor gsm0480_decode_ss_requestVadim Yanitskiy2018-01-171-7/+14
| | | | Change-Id: Iba734db97ab516f8fce816c4e4225b97b93619f1
* gsm0480: move SS request length check to parse_ss()Vadim Yanitskiy2018-01-171-12/+11
| | | | Change-Id: I8e7ce5bd97f3a8731924264c92afb9a7183937dc
* gsm0480: pass exact GSM 04.80 payload length to parse_ss()Vadim Yanitskiy2018-01-171-4/+4
| | | | Change-Id: I9608d4ad16d7581320615c140beaac36628c31a4
* gsm0480: add specification reference to SS message typeVadim Yanitskiy2018-01-171-0/+1
| | | | Change-Id: Iff0210e995053e270939a774db33f55b22545204
* gsm0480: handle GSM0480_OP_CODE_PROCESS_USS_DATAVadim Yanitskiy2018-01-171-0/+5
| | | | Change-Id: I470290c2b544555e53cedd849b1d6a961db7b5a4
* gsm0480: handle USS_NOTIFY and USS_REQUEST with PROCESS_USS_REQVadim Yanitskiy2018-01-171-0/+2
| | | | Change-Id: If7cc6a966dfc17d37e22338ecc1f239f908a9f2e
* gsm0480: handle GSM0480_CTYPE_RETURN_RESULTVadim Yanitskiy2018-01-171-0/+82
| | | | Change-Id: I8fb2856acbbf4c53e7d53200a37bc8f79e763bcf
* gsm0480: parse GSM0480_MTYPE_FACILITY separatelyVadim Yanitskiy2018-01-171-1/+17
| | | | Change-Id: I6e029c436a50fa8c2823ea39c5d123ee701becfa
* gsm0480: handle UnstructuredSS Request with DSC != 0x0FVadim Yanitskiy2018-01-171-0/+20
| | | | | | | | | | | According to GSM 04.08, 4.4.2 "ASN.1 data types": the USSD-DataCodingScheme shall indicate use of the default alphabet using the 0x0F value. Previously, the UnstructuredSS Request messages with not default alphabet were not being handled. Let's fix this. Change-Id: I73d602f6f20b0afe7600d16bbd432069ae7be788
* gsm0480: clean up the parse_process_uss_req() codeVadim Yanitskiy2018-01-171-19/+20
| | | | | | This change reduces the degree of code nesting... Change-Id: I467f75794c5ac9df75c001245b18bbdfcfaadd88
* gsm0480: fix USSD OCTET STRING length confusionVadim Yanitskiy2018-01-171-2/+2
| | | | | | | | | | | | | | | | | | | | | | According to the GSM 04.80 (version 5.0.0) specification Annex A "Expanded ASN.1 Module "SS-Protocol", the maximum size of a USSD OCTET STRING is 160 bytes. Thus according to ETSI TS 123 038 (version 10.0.0) specification 6.1.2.3 "USSD packing of 7 bit characters", in 160 octets, it's possible to pack (160 * 8) / 7 = 182.8, that is 182 characters. The remaining 6 bits are set to zero. This change defines both mentioned values: - GSM0480_USSD_OCTET_STRING_LEN 160 - GSM0480_USSD_7BIT_STRING_LEN 182 keeping the old MAX_LEN_USSD_STRING 'as is' due to compatibility reasons. Now the new value is used for ss_request structure, while old one is still used for deprecated ussd_request structure. Change-Id: I6dead74f9ecea079752ff2400cdaf7c30187784e
* gsm0480: skip length check for 'RELEASE COMPLETE' messageSergey Kostanbaev2018-01-171-3/+10
| | | | | | | | According to GSM 04.80 Section 2.5 'Release complete' Table 2.5, the 'RELEASE COMPLETE' message payload is optional, so let's drop the length check in gsm0480_decode_ss_request() for this type. Change-Id: I63b7f8ce403169a9dbdbdb031db16693de2196d6
* Log lapd_datalink state on errorsMax2018-01-161-5/+5
| | | | | | | It's not very useful to get just the raw pointer address in case of lapd_datalink receive error. Log it's state in addition. Change-Id: Ie8c5df262312f886f509113f2707e36811df3bd5
* libosmocodec: implement ECU (Error Concealment Unit) for FRPhilipp Maier2018-01-152-1/+166
| | | | | | | | | | | When a bad GSM voice frame is received, it's being replaced by a silence frame. This may cause unpleasant audio effects. This change implements a functionality to craft a replacement frame from the last known good frame. Currently, only FR is supported, support for other codecs may be added latter. Change-Id: I06a21f60db01bfe1c2b838f93866fad1d53fdcd1
* logging-gsmtap: send only basename of source fileNeels Hofmeyr2018-01-121-0/+5
| | | | | | | | | | | GSMTAP doesn't have a lot of space for the source file name. It is better to send only the basename of the file, because only the first bit of a long path may not convey the source file at all, needing guess work from the line number. Before: "Source File Name: ../../../../src/libosmocore/src" After: "Source File Name: telnet_interface.c" Change-Id: Ie8fc9e782bcf8fa6e2e957d02e7d73c3a7c2bca8
* Allow multiple 'log gsmtap' sinksMax2018-01-121-2/+9
| | | | | | | | Previously we've checked for existing log target with a given hostname from vty code but it was ignored inside the check so only the very first 'log gsmtap' entry was enabled while the rest were silently ignored. Change-Id: I8fd8bda9e07d403a54735da30addb742e56538a2
* log: print loginfo assertions sourceMax2018-01-121-8/+8
| | | | | | | Print which function has triggered assert_loginfo(). It's handy in debugging logging-related issues in libosmocore. Change-Id: I8418d0c431106f50aa8779cd89396f02373304ad
* TLVP_PRESENT() should not return TRUE after tlv_parse() fails.Stefan Sperling2018-01-121-4/+10
| | | | | | | | | | | | If the length provided in the patcket exceeds the buffer length, tlv_parse() returns -2 but leaves tlv.val and tlv.len initializd. Many callers of tlv_parse() do not check its return value, but rely on TLVP_PRESENT() to see if a particular TLV was parsed successfully. By clearing tlv.val and tlv.len we make it less likely that those callers will use an overlong TLV length value. Change-Id: I4dda6938e1650b4bcaac45809a4763f86f5a9794
* gsm: add gsm0808_speech_codec_type_namesNeels Hofmeyr2018-01-122-0/+15
| | | | | | | Used for logging Speech Codec List entries in osmo-bsc, during handover decision. Change-Id: Ie6418d16db333188e9bcd2b32b7216f277ae8832
* Use existing function for TLLI encodingMax2018-01-082-15/+5
| | | | | | Use bssgp_msgb_tlli_put() instead of copy-pasted code. Change-Id: I06d60566a19dcae701f8648c19fbd8db6d586f77
* Add function to properly encode RAIMax2018-01-085-46/+44
| | | | | | | | | | | | | Add gsm48_encode_ra() which takes appropriate struct as [out] parameter instead of generic buffer. Using uint8_t buffer instead of proper struct type prooved to be error-prone - see Coverity CID57877, CID57876. Old gsm48_construct_ra() is made into tiny wrapper around new function. The test output is adjusted because of the change in function return value which was constant and hence ignored anyway. Related: OS#1640 Change-Id: I31f9605277f4945f207c2c44ff82e62399f8db74
* coding: move eB adjustement to appropriate placeMax2018-01-051-7/+2
| | | | | | | | | | As a leftover from code move from OsmoBTS we have eB adjustement outside of eB check in gsm0503_tch_burst_map() which is rightfully noted by Coverity. Let's fix this by moving the adjustement under the corresponding if. Change-Id: I385cd6ffea4d13ef911910fc87c92b73809888a2 Fixes: CID57691
* Use 127.0.0.1 for GSMTAP logging by defaultMax2018-01-051-3/+3
| | | | | | | | | | | | | | | Previously the were no default value provided in case of unspecified hostname in "log gsmtap" vty config. This leads to confusing log messages because NULL was used as a hostname: Inconsistent indentation -- leading whitespace must match adjacent lines, and indentation must reflect child node levels. A mix of tabs and spaces is allowed, but their sequence must not change within a child block. Fix this by using 127.0.0.1 as default log destination and logging hostname in case of errors. Related: OS#2608 Change-Id: I58b1d4ec522af18024be2e56c9103b3db7936813
* CTRL: Ensure peer/connection info is always printed the same wayHarald Welte2017-12-221-6/+6
| | | | | | | | | Now that we use osmo_sock_get_name() to print connection information at disconnect, let's use the same also at accept() time. Furthermore, let's call it CTRL connection everywhere for consistency. Change-Id: I33ee7d0ed853c5b2a4ae4e8ef945f8f27753cdea
* control_if: Log the disconnect of a CTRL clientHarald Welte2017-12-221-1/+4
| | | | | | | We are logging new CTRL connections at LOGL_INFO, so we should also log disconnects for symmetry. Change-Id: Id30aa76a5a3dab32d6b4121ce6fdf56d71dfc2ba
* control_if: Close control connection socket/fd on read/write == 0Harald Welte2017-12-221-1/+9
| | | | | | | | | | | When read() or write() system calls return '0' on a stream socket, it means that the connection has been closed ("EOF"). We must accordingly close this socket and remove all related state. Before this patch, every new CTRL connection would introduce a leak of both some memory/state, as well as a file descriptor :( Change-Id: I4fb70e5f123b37dece29f156c5f430c875e7cbaf
* timer: fixup whitespace issuesHarald Welte2017-12-221-3/+3
| | | | Change-Id: Ic0c8fc407a45ff4b0d3da1d3e4fdf8885b5bca9b
* ctrl: separate handling of GET_REPLY, SET_REPLY and TRAPNeels Hofmeyr2017-12-201-25/+28
| | | | | | | So far, error reporting just says "Trap/Reply", more accurately report 'GET REPLY', 'SET REPLY' and 'TRAP' as appropriate. Change-Id: Ic25a251502499aeda4e2952ec4190a1fa0bebb01
* ctrl: tighten CTRL input parsingNeels Hofmeyr2017-12-201-7/+70
| | | | | | | | | | | | | | | | Validate that incoming CTRL commands... - have decimal IDs, - return error on trailing characters, - have invalid characters in variable identifiers, - send detailed error messages as reply to the requestor. Adjust ctrl_test.{c,ok}, which best show the change in behavior. Message handling causes log messages on stderr; previously, stderr was empty. Add '[ignore]' in testsuite.at so that the nonempty stderr doesn't cause test failures. Change-Id: I96a9b6b6a3a5e0b80513aa9eaa727ae8c9c7d7a1
* rate_ctr: fix osmo-sgsn DoS: don't return NULL on already used indexNeels Hofmeyr2017-12-201-3/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Recent patch I563764af1d28043e909234ebb048239125ce6ecd introduced returning NULL from rate_ctr_group_alloc() when the index passed already exists. Instead of returning NULL, find an unused group index and use that, adjust the error message. In stats_test.c, adjust, and also assert allocated counter group indexes everywhere. Rationale: The original patch causes osmo-sgsn to crash as soon as the second subscriber attempts to establish an MM context. Of course osmo-sgsn is wrong to a) fail to check a NULL return value and crash and b) to fail to allocate an MM context just because the rate counter group could not be allocated (it still rejects the MM context completely if rate_ctr_group_alloc() fails). Nevertheless, the price we pay for rate counter correctness is, at least in this instance, way too high: osmo-sgsn becomes completely unusable for more than one subscriber. Numerous other places exist where rate_ctr_group_alloc() is called with a constant index number; from a quick grep magic I found these possible breaking points: osmo-sgsn/src/gprs/gb_proxy.c:1431: cfg->ctrg = rate_ctr_group_alloc(tall_bsc_ctx, &global_ctrg_desc, 0); osmo-sgsn/src/gprs/gprs_sgsn.c:139: sgsn->rate_ctrs = rate_ctr_group_alloc(tall_bsc_ctx, &sgsn_ctrg_desc, 0); osmo-sgsn/src/gprs/gprs_sgsn.c:270: ctx->ctrg = rate_ctr_group_alloc(ctx, &mmctx_ctrg_desc, 0); osmo-sgsn/src/gprs/gtphub.c:888: b->counters_io = rate_ctr_group_alloc(osmo_gtphub_ctx, &gtphub_ctrg_io_desc, 0); osmo-bsc/src/libfilter/bsc_msg_acc.c:87: lst->stats = rate_ctr_group_alloc(lst, &bsc_cfg_acc_list_desc, 0); osmo-pcu/src/bts.cpp:228: m_ratectrs = rate_ctr_group_alloc(tall_pcu_ctx, &bts_ctrg_desc, 0); osmo-pcu/src/tbf.cpp:793: tbf->m_ctrs = rate_ctr_group_alloc(tbf, &tbf_ctrg_desc, 0); osmo-pcu/src/tbf.cpp:879: tbf->m_ul_egprs_ctrs = rate_ctr_group_alloc(tbf, &tbf_ul_egprs_ctrg_desc, 0); osmo-pcu/src/tbf.cpp:880: tbf->m_ul_gprs_ctrs = rate_ctr_group_alloc(tbf, &tbf_ul_gprs_ctrg_desc, 0); osmo-pcu/src/tbf.cpp:970: tbf->m_dl_egprs_ctrs = rate_ctr_group_alloc(tbf, &tbf_dl_egprs_ctrg_desc, 0); osmo-pcu/src/tbf.cpp:977: tbf->m_dl_gprs_ctrs = rate_ctr_group_alloc(tbf, &tbf_dl_gprs_ctrg_desc, 0); osmo-pcu/src/tbf.cpp:1475: ul_tbf->m_ctrs = rate_ctr_group_alloc(ul_tbf, &tbf_ctrg_desc, 0); osmo-pcu/src/bts.cpp:226: m_ratectrs = rate_ctr_group_alloc(tall_pcu_ctx, &bts_ctrg_desc, 1); We can fix all of these callers and then reconsider returning NULL, but IMO even into the future, rate counter group indexes are not something worth failing to provide service for. For future bugs we should keep the automatic index picking in case of index collisions. We will get an error message barfed and can fix the issue in our own time, while the application remains completely usable, and even the rate counters can still be queried (at wrong indexes, but life is tough). Related: I49aa95b610f2faec52dede2e4816da47ca1dfb14 (osmo-sgsn's segfault) Change-Id: Iba6e41b8eeaea5ff6ed862bab3f34a62ab976914
* ctrl: on parse errors, return a detailed message to senderNeels Hofmeyr2017-12-181-11/+23
| | | | | | | | | | | The recently added ctrl_cmd_parse2() returns non-NULL cmd with error messages upon parsing errors. In handle_control_read(), use ctrl_cmd_parse2() and send those back to the CTRL command sender as reply. Retain the previous "Command parser error" reply only in case ctrl_cmd_parse2() should return NULL, which shouldn't actually happen at all. Change-Id: Ie35a02555b76913bb12734a76fc40fde7ffb244d
* add ctrl_cmd_parse2() to return parsing errorsNeels Hofmeyr2017-12-181-2/+16
| | | | | | | | | | | | | | | | | | | | | If a control command fails to parse, we so far discard specific error messages and instead send just "Command parser error". In ctrl_cmd_parse() we actually compose detailed error replies, but in the end simply talloc_free() them and return NULL. A first step to report these errors to the ctrl command issuer is to not return NULL and instead return the cmd with type = CTRL_TYPE_ERROR. Add ctrl_cmd_parse2() to return such instead of NULL. To stay API compatible, provide ctrl_cmd_parse2() to return a cmd on errors. ctrl_cmd_parse() retains identical behavior but becomes just a simple wrapper around ctrl_cmd_parse2() which discards the cmd on error. No need really to deprecate ctrl_cmd_parse() yet; especially as long as compiler warnings might break jenkins builds. Change-Id: I5047c9f977d70b03eea77cbcfd2b96d43ea46880
* ctrl: fix mem leak when handling GET_REPLY and SET_REPLYNeels Hofmeyr2017-12-181-2/+1
| | | | | | | | | | | | In ctrl_handle_msg() (code recently propagated from handle_control_read()), talloc_free() the parsed ctrl_cmd in all code paths. In particular, a free was missing in case ctrl_cmd_handle() returns CTRL_CMD_HANDLED. CTRL_CMD_HANDLED is triggered by GET_REPLY / SET_REPLY parsing, as show by ctrl_test.c. With the memleak fixed, adjust expected test output and make a detected mem leak abort the test immediately. Change-Id: Id583b413f8b8bd16e5cf92a8a9e8663903646381
* ctrl: prep test: separate new ctrl_handle_msg() from handle_control_read()Neels Hofmeyr2017-12-181-17/+26
| | | | | | | | | | In order to allow unit testing the ctrl iface msgb handling, have a separate msgb entry point function from the actual fd read function. An upcoming patch will prove a memory leak in CTRL msgb handling by a unit test that needs this separation. Change-Id: Ie09e39db668b866eeb80399b82e7b04b8f5ad7c3
* utils: add osmo_escape_str()Neels Hofmeyr2017-12-181-0/+87
| | | | | | | | | | | | | To report invalid characters in identifiers, it is desirable to escape any weird characters. Otherwise we might print stray newlines or control characters in the log output. ctrl_test.c already uses a print_escaped() function, which will be replaced by osmo_escape_str() in a subsequent patch. control_cmd.c will use osmo_escape_str() to log invalid identifiers. Change-Id: Ic685eb63dead3967d01aaa4f1e9899e5461ca49a
* add osmo_auth_c3() (separate from gsm_milenage())Neels Hofmeyr2017-12-183-3/+16
| | | | | | | | | | | | | | | To send a Ciphering Mode Command, we may need to derive a Kc from UMTS AKA tokens. gsm_milenage() derives Kc from 3G tokens, but also derives an SRES. For SRES, it requires an OPC, which may need to be derived from OP first. All we need is a Kc, so we could feed a zero OPC ... but to simplify the function call for cases where just a Kc is required, separate the c3 function out from gsm_milenage(), as osmo_auth_c3(). Obviously call osmo_auth_c3() from gsm_milenage() (meaning that osmo-hlr's 55.205 derived auc tests still cover exactly that implementation). Prepares: If04e405426c55a81341747a9b450a69188525d5c (osmo-msc) Related: OS#2745 Change-Id: I85a1d6ae95ad9e5ce9524ef7fc06414848afc2aa
* rate_ctr: print proper error message if rate_ctr already existsHarald Welte2017-12-181-1/+4
| | | | Change-Id: I86b7ccb0931f5a2a489bb8c7c6aee0894a126eb8
* utils: add osmo_separated_identifiers_valid()Neels Hofmeyr2017-12-171-4/+17
| | | | | | | | For validating CTRL input, we want to verify that an input variable is a series of valid osmo_identifier_valid() separated by dots. Allow validating any additional chars with identifiers, for CTRL vars will be just ".". Change-Id: I13dfd02c8c870620f937d789873ad84c6b1c45de
* fix osmo_identifier_valid(): only allow printable charactersNeels Hofmeyr2017-12-171-0/+2
| | | | | | In particular disallow ASCII 0..31 (control characters) and 127 (DEL). Change-Id: I04469988495af03c881fe81d7786ca7f71636299
* Do not allocate already existing counter groupMax2017-12-171-0/+3
| | | | | | | | Check that no group with the given name and index already exist before allocating it. Add corresponding test case. Change-Id: I563764af1d28043e909234ebb048239125ce6ecd Related: OS#2757
* gsm0808_create_cipher_reject: Fix encoding of Cause IEHarald Welte2017-12-171-1/+2
| | | | | | | | | The Cause IE in the 08.08 CIPHER MODE REJECT is a normal TLV IE, and not just a value. Let's make sure we encode the cause value properly. Change-Id: I4f5b231edf6dcb0a9c2bbafb2a59f301f3b2402b Closes: OS#2766
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