[SR-Users] Fwd: Stack smash error when using auth_ephemeral with KEMI

[Daniel-Constantin Mierla]

Hello,

have you tried the dedicated KEMI functions?

  -
http://kamailio.org/docs/tutorials/devel/kamailio-kemi-framework/modules/#auth_ephemeral

KSR.x.modf() must be avoided as much as possible, because it is an
workaround which can also lead to memory leaks if the kamailio.cfg
functions don't have a free fixup function.

Cheers,
Daniel

On 12.05.19 00:16, Grant Bagdasarian wrote:
> Hi Daniel,
>
> FYI, the following also ends up in the stack smash error:
> _.x.modf("autheph_authenticate", "1576734089:grant", "1234")
>
> I also tried with the devel nightly deb package, which also resulted
> in the same error.
> I'm unsure if this error also happens when using the native Kamailio
> script, as my routing logic is built using the Python3 module.
> Will give the native script a try soon, and report back.
>
> Regards,
>
> Grant
>
> On Tue, May 7, 2019 at 11:08 PM Grant Bagdasarian
> <grantbagdasarian at gmail.com> wrote:
>> Hi Daniel,
>>
>> I used the latest Docker image for Kamailio 5.2.2 and then changed the
>> apt kamailio.list file to contain the nightly build and
>> updated/upgraded kamailio. Hope this is enough to target the latest
>> git 5.2 version.
>> If not, please let me know.
>>
>> deb     http://deb.kamailio.org/kamailio52-nightly stretch main
>> deb-src http://deb.kamailio.org/kamailio52-nightly stretch main
>>
>> https://pastebin.com/XHsFAiJp
>>
>> It still ends in a stacksmash error.
>>
>> Regards,
>>
>> Grant
>>
>> On Fri, May 3, 2019 at 11:56 AM Daniel-Constantin Mierla
>> <miconda at gmail.com> wrote:
>>> Hello,
>>>
>>> can you try with latest git branch 5.2? I pushed a commit that
>>> eventually fixes it.
>>>
>>> Cheers,
>>> Daniel
>>>
>>> On 02.05.19 23:54, Grant Bagdasarian wrote:
>>>> Hi Daniel,
>>>>
>>>> See pastebin url below for the backtrace.
>>>> https://pastebin.com/tTUUk4YH
>>>>
>>>> Hopefully I did it the right way. Please let me know if you need anything else.
>>>> FYI, Kamailio is running inside of a docker container.
>>>>
>>>> version: kamailio 5.2.1 (x86_64/linux)
>>>> flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS,
>>>> USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM,
>>>> SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY,
>>>> USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER,
>>>> USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES
>>>> ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144 MAX_URI_SIZE
>>>> 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
>>>> poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
>>>> id: unknown
>>>> compiled with gcc 6.3.0
>>>>
>>>> I can easily replicate this, but to be sure I've saved the core file
>>>> locally on my machine.
>>>>
>>>> Regards,
>>>>
>>>> Grant
>>>>
>>>> On Thu, May 2, 2019 at 10:05 AM Daniel-Constantin Mierla
>>>> <miconda at gmail.com> wrote:
>>>>> Hello,
>>>>>
>>>>> can you get a core file for this case?
>>>>>
>>>>> Set `ulimit -c unlimited` before starting Kamailio as root and run again.
>>>>>
>>>>> Once you have the core file, get the backtrace with gdb.
>>>>>
>>>>> Cheers,
>>>>> Daniel
>>>>>
>>>>> On 01.05.19 20:26, Grant Bagdasarian wrote:
>>>>>> Hello,
>>>>>>
>>>>>> I was trying out the auth_ephemeral module inside the xhttp
>>>>>> event_route in Python KEMI, and discovered a possible bug.
>>>>>>
>>>>>> https://pastebin.com/4Ghumfis
>>>>>>
>>>>>> The following will result in the stack smash error. Whenever I leave
>>>>>> out the unixtimestamp the
>>>>>> module will complain about not being able to convert to an int, which
>>>>>> make sense, but doesn't lead to a stack smash error and a complete
>>>>>> crash of Kamailio.
>>>>>>
>>>>>> KSR.auth_ephemeral.autheph_authenticate("1576734089:grant", "1234").
>>>>>>
>>>>>> According to the documentation this module can only be used in
>>>>>> REQUEST_ROUTE, but I found a presentation online which also used this
>>>>>> module and that particular function in event_route, which is what I
>>>>>> need for WebSocket authentication.
>>>>>>
>>>>>> Hope this helps. Please let me know if you need more information.
>>>>>>
>>>>>> Regards,
>>>>>>
>>>>>> Grant
>>>>>>
>>>>>> _______________________________________________
>>>>>> Kamailio (SER) - Users Mailing List
>>>>>> sr-users at lists.kamailio.org
>>>>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>>> --
>>>>> Daniel-Constantin Mierla -- www.asipto.com
>>>>> www.twitter.com/miconda -- www.linkedin.com/in/miconda
>>>>> Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com
>>>>>
>>>> _______________________________________________
>>>> Kamailio (SER) - Users Mailing List
>>>> sr-users at lists.kamailio.org
>>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>> --
>>> Daniel-Constantin Mierla -- www.asipto.com
>>> www.twitter.com/miconda -- www.linkedin.com/in/miconda
>>> Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com
>>>
-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda