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* TLV: Add one-shot TLV encoderHarald Welte2019-05-192-0/+49
| | | | | | | | | | | | | | | | | So far, the TLV code contained two types of functions * tlp_parse() to parse all TLVs according to definition into tlvp_parsed * various helper functions to encode individual TLVs during message generation This patch implements the inverse of tlv_parse(): tlv_encode(), which takes a full 'struct tlv_pared' and encodes all IEs found in it. The order of IEs is in numerically ascending order of the tag. As many protocols have different IE/TLV ordering requirements, let's add a tlv_encode_ordered() function where the caller can specify the TLV ordering during the one-shot encode. Change-Id: I761a30bf20355a9f80a4a8e0c60b0b0f78515efe
* add tlv_parse2(), capable of multiple instances of the same IENeels Hofmeyr2018-04-131-0/+11
| | | | | | | | | | | | | | | 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
* use osmo_init_logging2() with proper talloc ctxNeels Hofmeyr2018-04-061-1/+1
| | | | | | | | Ironically, when deprecating osmo_init_logging() in I216837780e9405fdaec8059c63d10699c695b360, I forgot to change the callers within libosmocore itself, i.e. in the various regression tests. Change-Id: Ia36c248f99353d5baaa2533f46a2f60a8579bdf8
* add a regression test for TLV parsing with repeated IEsStefan Sperling2018-03-161-0/+31
| | | | | | | | | | | | | Since commit bf383a1d83661af26ccd6521c49b655fb22531d4 tlv_parse() will return the first occurrence of a repeated IE. Add a test to verify this behaviour. This test passes with the current code and fails if bf383a1d83661af26ccd6521c49b655fb22531d4 is reverted. While here, fix lies in documentation about the return value of tlv_parse() and fix a typo in another comment. Change-Id: I041f38548c5e4236920991d6c681c1c1e04de9ca Related: OS#2904
* tlv_test.c: Fix compilation warningsPau Espin Pedrol2017-06-181-19/+25
| | | | | | | | Several warnings like the one below are fixed: warning: array subscript is below array bounds [-Warray-bounds] uint8_t *unchanged_ptr = buf - 1; Change-Id: I35d7d926939c14700cbca732bd64e588c75424b4
* tlv: Import osmo_shift_* and osmo_match_shift_* from openbscHarald Welte2016-05-052-0/+252
These routines have nothing to do with specifically the BSC, so import them to the TLV parser we keep in libosmogsm.