[sr-dev] Problem load db_perlvdb.so module

[Daniel-Constantin Mierla]

Hello,

quite a surprise that someone is trying to use this module, I was
considering to move it to obsolete repo, because nobody used it for so
long and no developer updated it over the time.

The module was still compiling due to some casts, but the DB API was
changed in the past and this module was left behind.

I did the update of the API (still some warnings that needs to be taken
care), so you can try now with master branch. Maybe it goes on pretty well.

Otherwise I do not have to test or maintain the module, if you want to
use it, you have to spend some time with it. I can help fixing bugs when
they are obvious in the C code (like API changes) or a proper report is
filled, but that's all I can do.

Cheers,
Daniel

On 04.05.18 23:37, M S wrote:
> Hi,
>
> Seems there are some serious problems with db_perlvdb. It gives
> segmentation fault as soon as i set it as db url for any module e.g.
> acc, sip_trace, msilo and so on.
>
>
> Here is back-trace of core dump,
>
> --
> #0  0xb57653dd in parseurl (url=0xaf41ba5c "\340\352\245\266\062") at
> perlvdbfunc.c:60
>         cn = 0x1 <Address 0x1 out of bounds>
> #1  0xb5765af6 in perlvdb_db_init (url=0xaf41ba5c
> "\340\352\245\266\062") at perlvdbfunc.c:123
>         res = 0x5
>         cn = 0xaf539cdb "\270"
>         obj = 0x0
>         consize = 32
>         __FUNCTION__ = "perlvdb_db_init"
> #2  0xaf3f81c2 in mod_init () at msilo.c:335
>         avp_spec = {type = PVT_AVP, getf = 0xb5f86c50 <pv_get_avp>,
> setf = 0xb5f8a8a2 <pv_set_avp>, pvp = {pvn = {type = 0, nfree = 0, u = {
>                 isname = {type = 1, name = {n = -1230637607, s = {s =
> 0xb6a5f5d9 "msilo_extra_hdrs)", len = 16}, re = 0xb6a5f5d9}}, 
>                 dname = 0x1}}, pvi = {type = 0, u = {ival = 0, dval =
> 0x0}}}, trans = 0x0}
>         __FUNCTION__ = "mod_init"
> #3  0x081e6b7c in init_mod (m=0xb6a4d9b0) at core/sr_module.c:972
>         __FUNCTION__ = "init_mod"
> #4  0x081e6e82 in init_modules () at core/sr_module.c:1001
>         t = 0x544c1e2c
>         i = -1
>         __FUNCTION__ = "init_modules"
> --
>
>
> Thank you.
>
>
>
> On Fri, May 4, 2018 at 7:29 PM, M S <shaheryarkh at gmail.com
> <mailto:shaheryarkh at gmail.com>> wrote:
>
>     Hi,
>
>     I am trying to load db_perlvdb.so module using latest Kamailio
>     branch v5.0.6 with git revision
>     49bd81ad7856dac9b2efd53597fb1c182de7440b on Debian Wheezy 32bit.
>     The compilation and installation went successful however the
>     module gives following error.
>
>     --
>     May  4 19:03:59 webrtc[8895]: INFO: app_perl [app_perl_mod.c:351]:
>     mod_init(): perl interpreter has been initialized
>     (1525453439.237584 => 1525453439.454432)
>     May  4 19:03:59 webrtc[8895]: CRITICAL: db_perlvdb
>     [db_perlvdb.c:79]: mod_init(): perl module not loaded. Exiting.
>     May  4 19:03:59 webrtc[8895]: ERROR: <core>
>     [core/sr_module.c:970]: init_mod(): Error while initializing
>     module db_perlvdb
>     (/usr/local/adx-webrtc/lib/kamailio/modules/db_perlvdb.so)
>     --
>
>
>     I tried to find module perl.so in modules folder of kamailio
>     installation but there is none. Then i looked through the source
>     code but no success.
>
>     After some googling, i found following link which states that
>     perl.so was remained to app_perl.so since v4.x.
>
>     I have created a small patch for db_perlvdb.c which corrects this
>     error.
>
>
>     --
>     diff --git a/src/modules/db_perlvdb/db_perlvdb.c
>     b/src/modules/db_perlvdb/db_perlvdb.c
>     index 7a2b63e..266ece2 100644
>     --- a/src/modules/db_perlvdb/db_perlvdb.c
>     +++ b/src/modules/db_perlvdb/db_perlvdb.c
>     @@ -75,8 +75,8 @@ struct module_exports exports = {
>      
>      static int mod_init(void)
>      {
>     -    if (!module_loaded("perl")) {
>     -        LM_CRIT("perl module not loaded. Exiting.\n");
>     +    if (!module_loaded("app_perl")) {
>     +        LM_CRIT("app_perl module not loaded. Exiting.\n");
>              return -1;
>          }
>     -- 
>
>
>     Kindly update Kamailio master and branch trunks.
>
>
>     Thank you.
>
>
>
>
>
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-- 
Daniel-Constantin Mierla
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio World Conference - May 14-16, 2018 - www.kamailioworld.com

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