libosmocore.git branch neels/ctrl_parsing updated. 0.10.2-72-g41dcec81

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- Log -----------------------------------------------------------------
http://cgit.osmocom.org/libosmocore/commit/?id=41dcec816eb56d69dc69120e6bac06365d783a0a

commit 41dcec816eb56d69dc69120e6bac06365d783a0a
Author: Neels Hofmeyr <neels at hofmeyr.de>
Date:   Mon Dec 18 03:12:01 2017 +0100

    add osmo_auth_c3(): separate from gsm_milenage()
    
    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

http://cgit.osmocom.org/libosmocore/commit/?id=e554429d04bceaac626165d13b69948477482e06

commit e554429d04bceaac626165d13b69948477482e06
Author: Neels Hofmeyr <neels at hofmeyr.de>
Date:   Sat Dec 16 01:18:53 2017 +0100

    ctrl: separate handling of GET_REPLY, SET_REPLY and TRAP
    
    So far, error reporting just says "Trap/Reply", more accurately report 'GET
    REPLY', 'SET REPLY' and 'TRAP' as appropriate.
    
    Change-Id: Ic25a251502499aeda4e2952ec4190a1fa0bebb01

http://cgit.osmocom.org/libosmocore/commit/?id=ff1713e115789f1fff7f6fdc7f34b321fab27064

commit ff1713e115789f1fff7f6fdc7f34b321fab27064
Author: Neels Hofmeyr <neels at hofmeyr.de>
Date:   Tue Sep 26 14:21:44 2017 +0200

    ctrl: tighten CTRL input parsing
    
    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

http://cgit.osmocom.org/libosmocore/commit/?id=c4eaafd6a195491d93161b165ecd7af5456267d5

commit c4eaafd6a195491d93161b165ecd7af5456267d5
Author: Neels Hofmeyr <neels at hofmeyr.de>
Date:   Sat Dec 16 01:12:35 2017 +0100

    ctrl: on parse errors, return a detailed message to sender
    
    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

http://cgit.osmocom.org/libosmocore/commit/?id=29ed24daee0351f5bd1947a74d0a7c40fdf96d7f

commit 29ed24daee0351f5bd1947a74d0a7c40fdf96d7f
Author: Neels Hofmeyr <neels at hofmeyr.de>
Date:   Sat Dec 16 01:05:25 2017 +0100

    add ctrl_cmd_parse2() to return parsing errors
    
    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

http://cgit.osmocom.org/libosmocore/commit/?id=41eec760c14a594042daab768e85e4a04d20dfc4

commit 41eec760c14a594042daab768e85e4a04d20dfc4
Author: Neels Hofmeyr <neels at hofmeyr.de>
Date:   Fri Dec 15 20:41:28 2017 +0100

    ctrl_test: add two more current parsing bugs to prep for fix
    
    Change-Id: Id11bc326be2f0bc2746a928354e416495a18baf7

http://cgit.osmocom.org/libosmocore/commit/?id=6115231b49382c6b21677c8ec985f61af93383c3

commit 6115231b49382c6b21677c8ec985f61af93383c3
Author: Neels Hofmeyr <neels at hofmeyr.de>
Date:   Sat Dec 16 04:05:21 2017 +0100

    ctrl: fix mem leak when handling GET_REPLY and SET_REPLY
    
    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

http://cgit.osmocom.org/libosmocore/commit/?id=3ddb493599b61fcbe7dddb29ab6ed3a13914648c

commit 3ddb493599b61fcbe7dddb29ab6ed3a13914648c
Author: Neels Hofmeyr <neels at hofmeyr.de>
Date:   Sat Dec 16 04:01:54 2017 +0100

    ctrl_test: show memleak when receiving GET_REPLY and SET_REPLY commands
    
    The "memleak!" output shows messages that lack a talloc_free() of the parsed
    ctrl command buffer. The leak shall be fixed in a subsequent patch.
    
    Change-Id: I2c3e4d08b769b9cd77593362ea36a28d681cd042

http://cgit.osmocom.org/libosmocore/commit/?id=86f9b1902cb0294a2b3c096dce88a15439d1d661

commit 86f9b1902cb0294a2b3c096dce88a15439d1d661
Author: Neels Hofmeyr <neels at hofmeyr.de>
Date:   Sat Dec 16 05:38:37 2017 +0100

    ctrl_test: expand to test message handling and detect mem leaks
    
    Subsequent patches that tighten CTRL input validation will make the results
    more interesting.
    
    Change-Id: Idd4cc7d193db1a7d761f72ed33ed46eea450a78f

http://cgit.osmocom.org/libosmocore/commit/?id=32c8f8ac9999a0fa0791a7ef1bdd87210876e15f

commit 32c8f8ac9999a0fa0791a7ef1bdd87210876e15f
Author: Neels Hofmeyr <neels at hofmeyr.de>
Date:   Sat Dec 16 03:57:56 2017 +0100

    ctrl: prep test: separate new ctrl_handle_msg() from handle_control_read()
    
    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

http://cgit.osmocom.org/libosmocore/commit/?id=d8ad45804a605d9c0f22725aecf9a38450a35e31

commit d8ad45804a605d9c0f22725aecf9a38450a35e31
Author: Neels Hofmeyr <neels at hofmeyr.de>
Date:   Sat Dec 16 01:03:37 2017 +0100

    ctrl_test.c: replace print_escaped() with new osmo_escape_str()
    
    Change-Id: I12d3828dcc925f97fde11c360f1d60f3bd8cad8b

http://cgit.osmocom.org/libosmocore/commit/?id=5674c182b620bd7cb2c5a175382f8e72cecea1cf

commit 5674c182b620bd7cb2c5a175382f8e72cecea1cf
Author: Neels Hofmeyr <neels at hofmeyr.de>
Date:   Sat Dec 16 00:54:52 2017 +0100

    utils: add osmo_escape_str()
    
    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

-----------------------------------------------------------------------

Summary of changes:
 include/osmocom/crypt/auth.h |  2 ++
 src/gsm/auth_core.c          | 13 +++++++++++++
 src/gsm/gsm0808.c            |  3 ++-
 src/gsm/libosmogsm.map       |  1 +
 src/gsm/milenage/milenage.c  |  3 +--
 src/rate_ctr.c               |  3 +++
 src/utils.c                  |  6 +++---
 tests/ctrl/ctrl_test.c       |  1 -
 tests/gsm0808/gsm0808_test.c |  2 +-
 tests/stats/stats_test.c     |  7 ++++++-
 10 files changed, 32 insertions(+), 9 deletions(-)


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