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* GPRS: constify NS printing routine parametersMax2017-10-241-1/+1
| | | | Change-Id: I549ab7c26ac1489e01f281594bafe44b0681dc83
* rate_ctr: Enforce counter (and ctr_group) names are valid identifiersHarald Welte2017-10-241-1/+1
| | | | | | | | | | | | | | As rate counters are automatically exposed on the CTRL interface, we need to make sure they don't contain special characters such as '.' which are not permitted/supported by CTRL. In order to be able to run old versions of osmocom programs with libosmocore versions after this commit, we introduce some special name mangling: Any '.' in the names are replaced with ':' during counter group registration, if valid identifiers can be obtained this way. Change-Id: Ifc6ac824f5dae9a848bb4a5d067c64a69eb40b56
* Introduce osmo_identifier_valid() function to check validity of identifierHarald Welte2017-10-241-0/+3
| | | | | | | | | We define the notion of an 'osmocom identifier' which is basically a 7-bit US-ASCII without any special characters beyond "-_:@". We introduce a function to verify if an identifier consists only of the permitted characters. Change-Id: I96a8d345c5a69238a12d040f39b70c485a5c421c
* GPRS: clarify ip/frgre union useMax2017-10-241-0/+2
| | | | | | | | | * add comment about underlying assumption that structs in ip/frgre union members in gprs_nsvc struct have the same memory layout * remove such assumption from gprs_ns_ll_str() * use gprs_ns_ll_str() for NSE dump Change-Id: Idcb912b7b3f7460fd2b058e16650c0bde8f757ee
* GPRS: unify NS state printingMax2017-10-241-0/+4
| | | | | | | | | * introduce defines with NS state names * use them for vty and tests * expand test output to print complete NS state Change-Id: I69f8d536135ae76dbca623c2f1ffba625adcb1e9 Related: SYS#3610
* add osmo_talloc_asprintf() and ctrl_cmd_reply_printf()Neels Hofmeyr2017-10-242-0/+21
| | | | | | | | | | | | | | | | Add macro to append to a CTRL commands' reply string, ctrl_cmd_reply_printf(). The talloc_asprintf() part of it is generic enough to qualify for a separate macro, osmo_talloc_asprintf(). The idea is to not have to decide for each bit added to a string whether the string is already allocated or not, but simply be able to issue printf commands and let the macro worry about initial allocation or reallocation. This originally came from osmo-hlr change I1bd62ae0d4eefde7e1517db15a2155640a1bab58, where it was requested to move this bit to libosmocore. Change-Id: Ic9dba0e4a1eb5a7dc3cee2f181b9024ed4fc7005
* gb: optionally allow nsip packets only from a specific hostPhilipp Maier2017-10-241-0/+2
| | | | | | | | | | | | | | When listening for nsip connections is enabled, then every remote host may send packets. This is useful for an SGSN that serves multiple PCUs, but contraproductive for a PCU that awaits packets from a single SGSN. Add struct members remote_ip, and remote_port to struct gprs_ns_inst, when set, then the listening end uses connect() to ensure that only the expected host may send packets. Related: OS#2401 Change-Id: Ifeb201d9006eec275a46708007ff342cdfc14e45
* Replace bitvec_set_uint() with bitvec_set_u64()Max2017-10-241-0/+2
| | | | | | | | | | | | | | | | | | | Old bitvec_set_uint() uses "unsigned int" as input parameter which length is not guaranteed. It does not allow to specify which bit_value to set and does not check for incorrect length. Overall this makes it harder to re-use and more error-prone. Let's replace it with extended implementation which uses fixed type length parameters and extra checks. The additional parameter allows caller to explicitly indicate the need to use L/H instead of 0/1 for bit vector elements. It's necessary to properly encode some of the messages from 3GPP TS 44.018, for example ยง10.5.2.16 IA Rest Octets. The old function is left for backward compatibility as a tiny wrapper around new function and will be deprecated in follow-up patches. Change-Id: I1b670dacb55fb3063271d045f9faa10fccba10a6 Related: OS#1526
* ctrl: allow more nodes than those in enum ctrl_node_typeNeels Hofmeyr2017-10-231-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | Add ctrl_interface_setup_dynip2() to add a node_count parameter, which can be used to define more ctrl nodes without having to merge a patch to libosmocore. In consequence, also add ctrl_handle_alloc2(), since ctrl_interface_setup_dynip() uses ctrl_handle_alloc() to allocate the node slots, and add node_count param to static ctrl_init(). Passing zero as node_count indicates to use the default of _LAST_CTRL_NODE as before, i.e. to not define more ctrl nodes. Assert that we never allocate less than _LAST_CTRL_NODE slots. The current ctrl_interface_setup_dynip() and ctrl_handle_alloc() become simple wrappers that pass zero as node_count. Their use is still valid and they do not need to be deprecated. The API comment to ctrl_interface_setup_dynip2() explains how to define more node IDs. This patch was verified to work by osmo-hlr.git change I98ee6a06b3aa6a67adb868e0b63b0e04eb42eb50 which adds two node IDs for use by osmo-hlr only. Change-Id: I1bd62ae0d4eefde7e1517db15a2155640a1bab58
* abis_nm: Add abis_nm_admin_name() APIPau Espin Pedrol2017-10-231-0/+7
| | | | | | | | | Similar APIs exist for opstate and availability status. This patch does not break backward compatibility because osmo-bsc still requires direct use of the structure in get_string_value(). Change-Id: Ieace734aaff3f07606113feddde65b75202d96d6
* socket: add function osmo_sock_local_ip() to query local ipPhilipp Maier2017-10-231-0/+2
| | | | | | | | | | In some cases it is required to know the ip-address of the interface through that a given remote IP-Address can be reached. Add function osmo_sock_local_ip() to determine the local ip-address for a given remote ip-address Change-Id: I2988cc52b196fc8476703d1287e24cb4a48491c2
* add function msgb_printf() to print formatted text into msg bufPhilipp Maier2017-10-221-0/+1
| | | | | | | | | | | In ASCII string based protocols it a printf() version that prints directly to the message buffer may be useful. Add function msgb_printf(), make sure that msg buffer bounderies are not exceeded. If the end of the tail buffer is hit, return with an error code. Change-Id: I15e1af68616309555d0ed9ac5da027c9833d42e3
* api doc: fix two doxygen group closing bracesNeels Hofmeyr2017-10-172-2/+2
| | | | Change-Id: I6c1f47d13c5b7a9cb2281de9f017df4f1ed88ba7
* [doc] Properly define gsm0800 group and move all related files into itHarald Welte2017-10-172-2/+10
| | | | Change-Id: I91920c69c86d6a1932172becacb76faff2d3eb1e
* [doc] Properly define 'oap' group and add introductory textHarald Welte2017-10-171-2/+11
| | | | Change-Id: I1e875991ae1dd93862f850f85d40b3dac61ece72
* [doc] Define 'gsup' group with proper name, add intro textHarald Welte2017-10-171-2/+19
| | | | Change-Id: Ieee6213dc5aad082a2d439c7418b51f281b80b1a
* [doc] make sure all SMS related code is part of the 'sms' groupHarald Welte2017-10-174-4/+20
| | | | Change-Id: I24c56ccb56d5b39cfb887808f91b715da54c0f8b
* [doc] gea has separate group; A5 is not part of crypto but a5 groupHarald Welte2017-10-172-4/+7
| | | | Change-Id: I2fd24c86f9b52244073ec800a3287e3d38e660d9
* [doc] Provide proper name for 'auth' groupHarald Welte2017-10-171-1/+1
| | | | Change-Id: I5fb1c34475ea9db36c2ec5cddc988074a72a35f7
* [doc] TLV parser has far grown beyond GSM L3Harald Welte2017-10-161-1/+1
| | | | | | Let's hence not call the group "GSM L3 compatible TLV parser" Change-Id: Ic53f9c0d5ee787f994f42cf2aff313c6e131fbe6
* [doc] Rename "RSL" to "A-bis RSL" in documentation.Harald Welte2017-10-161-1/+1
| | | | | | | We also have "A-bis OML" and it's a bit odd to have one with prefix and the other without. Change-Id: Ida325f8a9c40b40c1aeaa4edfd1123ced7cc92b8
* [doc] Expand Doxuygen documentation for osmo_primHarald Welte2017-10-161-4/+23
| | | | | | Also, make sure prim.c is actually part of the 'prim' module. Change-Id: I4363e46a5f606eb2114a9cc1d2086007eaa58d31
* [doc] Put CRC-16 and generic CRC code in one Doxygen moduleHarald Welte2017-10-163-8/+14
| | | | | | .. and add missing API documentation bits Change-Id: I67119894bcbf8c779426a0272bae4c5ce1fbd1ed
* [doc] bits.c: Better / more Doxygen documentationHarald Welte2017-10-161-10/+12
| | | | Change-Id: If824a5c8d8ee6e3dc96a3fddeb105786c0c027c1
* [doc] Add Doxygen API documentation for stats.c and stats_statsd.cHarald Welte2017-10-161-21/+33
| | | | Change-Id: I8e49505f5c19beac90290fdba8821714e8eecd97
* [doc] counter.[ch] Add Doxygen API documentationHarald Welte2017-10-161-16/+5
| | | | | | | This adds a more complete set of API documentation for all osmo_counter relatedd functions and definitions. Change-Id: I24283c05620ee86a8beb165af98a85d754549efb
* [doc] stat_item: Complete doxygen documentation for APIHarald Welte2017-10-161-33/+13
| | | | | | | | The stat_item code base had some incomplete doxygen documentation so far. Let's complete it, and at the same time fix some cosmetic as well as copy+paste issues in the existing documentation bits. Change-Id: Ib514c137b40bf7b9791bd74be99af0b65575f2b6
* Rename 'statistics.c' to 'counter.c'Harald Welte2017-10-153-60/+63
| | | | | | | | | With stat_item, stats.c and stats_statsd.c, it is becoming a bit difficult to understand file naming. Also, the 'statistics.c' file actually only contained osmo_counter handling, so let's rename it to counter.c altogether. Change-Id: I2cfb2310543902b7da46cb15a76e2da317eaed7d
* utils: add osmo_is_hexstr(), add unit testNeels Hofmeyr2017-10-091-0/+5
| | | | | | Will be used by OsmoHLR to validate VTY and CTRL input. Change-Id: Idf75946eb0a84e145adad13fc7c78bb7a267aa0a
* auth: add OSMO_MILENAGE_IND_BITLEN_MAXNeels Hofmeyr2017-10-091-0/+1
| | | | | | Will be used by OsmoHLR to validate VTY and CTRL input. Change-Id: Ic39f3404d1a49ffd06070aa9897b36f219eacf4d
* auth: add value_strings for osmo_sub_auth_type, comment on osmo_auth_alg_name()Neels Hofmeyr2017-10-091-1/+7
| | | | | | | | | Add osmo_sub_auth_type_names[] and osmo_sub_auth_type_name(). Also add a hint to enum osmo_auth_algo's API doc that osmo_auth_alg_name() already exists (it is defined further below). Change-Id: I652a929bcd11c694d86812fb03d0a1cbd985efda
* Add function to generate random identifierMax2017-10-091-0/+5
| | | | | | | | | | | | | | | | | The function is a wrapper on top of getrandom() (if available via glibc) or corresponding syscall. If neither is available than failure is always returned. It's intended to generate small random data good enough for session identifiers and keys. To generate long-term cryptographic keys it's better to use special crypto libraries (like GnuTLS for example) instead. As an example it's used to replace old insecure random number generator in osmo-auc-gen utility. Change-Id: I0241b814ea4c4ce1458f7ad76e31d390383c2048 Related: OS#1694
* add osmo_imsi_str_valid() and osmo_msisdn_str_valid()Neels Hofmeyr2017-10-052-0/+5
| | | | | | | | | Add GSM23003_IMSI_MIN_DIGITS definition. Add regression test gsm23003_test.c to test the two new functions. Will be used by OsmoHLR to validate VTY and CTRL input. Change-Id: I1e94f5b0717b947d2a7a7d36bacdf04a75cb3522
* vty: install 'exit', 'end',... commands on *all* nodesNeels Hofmeyr2017-09-271-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In many callers of the VTY API, we are lacking the vty_install_default() step at certain node levels. This creates nodes that lack the 'exit' command, and hence the only way to exit such a node is to restart the telnet session. Historically, the VTY looked for missing commands on the immediate parent node, and hence possibly found the parent's 'exit' command when the local node was missing it. That is why we so far did not notice the missing default commands. Furthermore, some callers call install_default() instead of vty_install_default(). Only vty_install_default() also includes the 'exit' and 'end' commands. There is no reason why there are two sets of default commands. To end this confusion, to catch all missing 'exit' commands and to prevent this from re-appearing in the future, simply *always* install all default commands implicitly when calling install_node(). In cmd_init(), there are some top-level nodes that apparently do not want the default commands installed. Keep those the way they are, by changing the invocation to new install_node_bare() ({VIEW,AUTH,AUTH_ENABLE}_NODE). Make both install_default() and vty_install_default() no-ops so that users of the API may still call them without harm. Do not yet deprecate yet, which follows in Icf5d83f641e838cebcccc635a043e94ba352abff. Drop all invocations to these two functions found in libosmocore. Change-Id: I5021c64a787b63314e0f2f1cba0b8fc7bff4f09b
* VTY: implement talloc context introspection commandVadim Yanitskiy2017-09-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change introduces a new command, which could be used to inspect the application's talloc context directly from VTY. To enable this feature, an application need to provide it's context via the 'vty_app_info' struct, and register the VTY command by calling the osmo_talloc_vty_add_cmds(). The new command is a sub-command of 'show': show talloc-context <context> <depth> [filter] Currently the following contexts may be inspected: - application - a context provided by an application; - null - all contexts, if NULL-context tracking is enabled. A report depth is defined by the next parameter, and could be: - full - full tree report, as the talloc_report_full() does; - brief - brief tree report, as the talloc_report() does; - DEPTH - user defined maximal report depth. Also, there are two optional report filters: - regexp - print only contexts, matching a regular expression; - tree - print a specific context, pointed by specified address. The command output is formatted the same way as in case of calling the talloc_report() or talloc_report_full(). Change-Id: I43fc42880b22294d83c565ae600ac65e4f38b30d
* Add time conversion helpersMax2017-09-251-0/+5
| | | | | | | Add macros to break down absolute time in seconds into days/hours/minutes passed. Change-Id: I46b9a405c18ed9da8f31b7d5b6dcece5468bafbf
* vty: derive node name from prompt, use as XML idsNeels Hofmeyr2017-09-231-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The 'show online-help' produces XML output with <node id="..."> ids. We reference those from the osmo-gsm-manuals. Instead of numeric IDs coming from internal code, rather use a human-readable node ID -- referencing id='config-msc' is much easier than referencing id='23'. Add a char name[] to struct cmd_node, to hold this name. This may be provided upon struct definition. Since callers of the VTY API so far don't have a name yet, we would need to add names everywhere to get meaningful node IDs. There is a way to get node ID names without touching dependent code: My first idea was to find out which command entered the node, i.e. command 'msc' enters the MSC_NODE. But it is impossible to derive which command entered which node from data structs, it's hidden in the vty command definition. But in fact all (TM) known API callers indeed provide a prompt string that contains a logical and human readable string name. Thus, if the name is unset in the struct, parse the prompt string and strip all "weird" characters to obtain a node name from that. We can still set names later on, but for now will have meaningful node IDs (e.g. 'config-msc' from '%s(config-msc)# ') without touching any dependent code. When VTY nodes get identical node names, which is quite possible, the XML export de-dups these by appending _2, _3,... suffixes. The first occurence is called e.g. 'name', the second 'name_2', then 'name_3', and so forth. If a node has no name (even after parsing the prompt), it will be named merely by the suffix. The first empty node will become id='_1', then '_2', '_3', and so forth. This happens for nodes like VIEW_NODE or AUTH_NODE. If this is merged, we need to adjust the references in osmo-gsm-manuals.git. This can happen in our own time though, because we manually create the vty reference xml and copy it to the osmo-gsm-manuals.git and then update the references from the vty_additions.xml. This anyway has to happen because currently the references tend to be hopelessly out of sync anyway, placing comments at wildly unrelated VTY commands. Change-Id: I8fa555570268b231c5e01727c661da92fad265de
* VTY: implicit node exit by de-indenting, not parent lookupNeels Hofmeyr2017-09-192-0/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Note: This will break users' config files if they do not use consistent indenting. (see below for a definition of "consistent".) When reading VTY commands from a file, use indenting as means to implicitly exit child nodes. Do not look for commands in the parent node implicitly. The VTY so far implies 'exit' commands if a VTY line cannot be parsed on the current node, but succeeds on the parent node. That is the mechanism by which our VTY config files do not need 'exit' at the end of each child node. We've hit problems with this in the following scenarios, which will show improved user experience after this patch: *) When both a parent and its child node have commands with identical names: cs7 instace 0 point-code 1.2.3 sccp-address osmo-msc point-code 0.0.1 If I put the parent's command below the child, it is still interpreted in the context of the child node: cs7 instace 0 sccp-address osmo-msc point-code 0.0.1 point-code 1.2.3 Though the indenting lets me assume I am setting the cs7 instance's global PC to 1.2.3, I'm actually overwriting osmo-msc's PC with 1.2.3 and discarding the 0.0.1. *) When a software change moves a VTY command from a child to a parent. Say 'timezone' moved from 'bts' to 'network' level: network timezone 1 2 Say a user still has an old config file with 'timezone' on the child level: network bts 0 timezone 1 2 trx 0 The user would expect an error message that 'timezone' is invalid on the 'bts' level. Instead, the VTY finds the parent node's 'timezone', steps out of 'bts' to the 'network' level, and instead says that the 'trx' command does not exist. Format: Consistent means that two adjacent indenting lines have the exact same indenting characters for the common length: Weird mix if you ask me, but correct and consistent: ROOT <space>PARENT <space><tab><space>CHILD <space><tab><space><tab><tab>GRANDCHILD <space><tab><space><tab><tab>GRANDCHILD2 <space>SIBLING Inconsistent: ROOT <space>PARENT <tab><space>CHILD <space><space><tab>GRANDCHILD <space><tab><tab>GRANDCHILD2 <tab>SIBLING Also, when going back to a parent level, the exact same indenting must be used as before in that node: Incorrect: ROOT <tab>PARENT <tab><tab><tab>CHILD <tab><tab>SIBLING As not really intended side effect, it is also permitted to indent the entire file starting from the root level. We could guard against it but there's no harm: Correct and consistent: <tab>ROOT <tab><tab>PARENT <tab><tab><tab><tab>CHILD <tab><tab>SIBLING Implementation: Track parent nodes state: whenever a command enters a child node, push a parent node onto an llist to remember the exact indentation characters used for that level. As soon as the first line on a child node is parsed, remember this new indentation (which must have a longer strlen() than its parent level) to apply to all remaining child siblings and grandchildren. If the amount of spaces that indent a following VTY command are less than this expected indentation, call vty_go_parent() until it matches up. At any level, if the common length of indentation characters mismatch, abort parsing in error. Transitions to child node are spread across VTY implementations and are hard to change. But transitions to the parent node are all handled by vty_go_parent(). By popping a parent from the list of parents in vty_go_parent(), we can also detect that a command has changed the node without changing the parent, hence it must have stepped into a child node, and we can push a parent frame. The behavior on the interactive telnet VTY remains unchanged. Change-Id: I24cbb3f6de111f2d31110c3c484c066f1153aac9
* Expand bit pretty-printerMax2017-09-181-9/+11
| | | | | | | | | | Add OSMO_BIT_PRINT_EX() which is like OSMO_BIT_PRINT() but allows to specify character to be printed for set bits. It's useful to print bytes used as mask where set bit has particular semantics - for example TS mask in OsmoPCU. Change-Id: I72528bc1e376134c5a7b6e7a50c48e38c3f48b0a Related: OS#2282
* Add define for supported a5 key length limitMax2017-08-301-1/+3
| | | | Change-Id: I8ed0f1dbc31aaff22a685ceb3bd2f8db4d2f34fd
* umts aka: add sqn_ms out-param, print SQN.MS in osmo-auc-genNeels Hofmeyr2017-08-291-0/+1
| | | | | | | | | | | | | | | | When doing UMTS AKA with AUTS, it can be interesting to know the SQN.MS that was encoded in the AUTS. The only way to know this is to provide it as a separate out-parameter from milenage_gen_vec_auts(), because the SQN.MS from AUTS stored in umts.sqn is immediately modified non-trivially by milenage_gen_vec(). Add sqn_ms to struct osmo_sub_auth_data to retain SQN.MS even after a vector was generated. Use this to print out SQN.MS for 'osmo-auc-gen -3 -A'. Adjust test suite expectations. Related: OS#2464 Change-Id: I9fc05bbf169d06716f40b995154fd42a3f91bef3
* cosmetic: umts aka: tweak comments for sqn and indNeels Hofmeyr2017-08-291-2/+2
| | | | | | | | Clearly indicate that 'sqn' is an in *and* out-parameter. Clarify the effect of 'ind'. Change-Id: Ia40cd4ddf35f4fbe895b45b8ea59378f5ce9eb1f
* ports.h: Add VTY port for GGSNHarald Welte2017-08-161-0/+2
| | | | Change-Id: I5bd49fbc19e88db96b4adbd56c82e7936059551c
* add osmo_fd_setup() convenience function to fill-in osmo_fdHarald Welte2017-08-121-0/+4
| | | | | | | | This basically follows the concept of osmo_timer_setup() and allows the caller to fill-in all configurable fields of osmo_fd in one line of code, rather than open-coding it in 5 lines everywhere. Change-Id: I6dbf19ea22fd65302bfc5424c10418d1b7939094
* tlv: add [msgb_]t16lv_put() for 16bit tag + 8 bit len TLVsHarald Welte2017-08-091-1/+20
| | | | | | | | | | | In the Protocol Configuration Options IE (see 3GPP TS 24.008 10.5.6.3) there is yet another new TLV format (derived from PPP IPCP/LCP/...) which uses 16bit tag and 8bit length. Let's add functions so we can generate related TLVs. Parsing is unfortunately not possible in our existing structure as our tlv_parsed array only has 256 entries and thus cannot cope with 16bit tags. Change-Id: I9799130e2eba8fae8c4480fbb8a900c30232b694
* Add osmo_gprs_{ul,dl}_block_size_{bits,bytes} functionsHarald Welte2017-08-091-0/+25
| | | | | | Those functions can be used to look up the size of (E)GPRS blocks. Change-Id: I05ff75ef7dfae639886bbd09fe35f03a8af9d988
* Rename GSMTAP_CHANNEL_PDCH to GSMTAP_CHANNEL_PDTCHHarald Welte2017-07-291-1/+3
| | | | | | | PDCH is the physical channel, while actually we want to talk about PDTCH the logical channel. Introduce backwards compatibility define. Change-Id: Id6782d2247846e2db29fc58d98684970a66db948
* BSSGP: add function to reset all PTP BVCMax2017-07-281-1/+1<