[Users] Re: $ru, $rU, $ru/username, $ruri/username, usage

[Greg Fausak]

On Aug 22, 2006, at 5:00 AM, Bogdan-Andrei Iancu wrote:

> Hi Greg,
>
> the difference it;s about the meaning of the parameters.
> avp_write() use a pseudo variable as data *source*.  All the time  
> the pseudo variables are sources for the data.
> avp_pushto() parameter is the data *destination* - where the  data  
> should b e push to. This can not be an PS (which are RO).
> this is the reason of the different notation.....source versus  
> destination...if we would use the same notation it will be  
> confusing....
>

I know where the pseudo variable list is documented, is there a  
'write' psuedo variable list somewhere?

> regarding the bogus uri you get....can you print the $avp 
> (s:tmp_uri) after the avp_write() ?
>

Will do a bit later today.

-g

> regards,
> bogdan
>
> Greg Fausak wrote:
>
>> For completeness I'll follow up with what I think is a bug:
>>
>> I looked through the archives, and it seems that there
>> was a bug fix.  So I updated my stuff to the released 1.1.0 code and
>> tried again, still the same problem.
>>
>> So, I tried this:
>>
>>                avp_write("$rU","$avp(s:tmp_uri)");
>>                avp_subst("$avp(s:tmp_uri)", "/;.*//");
>>                avp_pushto("$ruri/username","$avp(s:tmp_uri)");
>>
>> Which works.
>>
>> I suspect there is a bug here somewhere.  I would expect:
>>                avp_write("$rU","$avp(s:tmp_uri)");
>>                avp_pushto("$rU","$avp(s:tmp_uri)");
>> to work, but the pushto() gets a parse error on the $rU.
>>  Aug 21 13:53:40 www openser[70435]: ERROR:avpops:fixup_pushto_avp:
>> unsupported  destination "$rU"; expected $ru,$du,$br
>>  Aug 21 13:53:40 www openser[70435]: ERROR: fix_actions: fixing
>> failed (code=-1) at cfg line 82
>>
>>
>>
>> When both functions have $ruri/username as in:
>>                avp_write("$ruri/username","$avp(s:tmp_uri)");
>>                avp_pushto("$ruri/username","$avp(s:tmp_uri)");
>> The RURI gets 4 bytes longer, starting with sip:sip:
>>
>> The hack I have using a mixture of $rU and $ruri/username works and
>> I'll leave it that way for now.
>>
>>
>> -g
>>
>>
>> On 8/21/06, Greg Fausak <lgfausak at gmail.com> wrote:
>>
>>> More along these lines...
>>>
>>> When I run this sequence:
>>>
>>>                 avp_write("$ruri/username","$avp(s:tmp_uri)");
>>>                 avp_subst("$avp(s:tmp_uri)", "/;.*//");
>>>                 avp_pushto("$ruri/username","$avp(s:tmp_uri)");
>>>
>>> The resulting RURI looks like:
>>>
>>> ERROR: parse_sip_msg_uri: bad uri
>>> <sip:sip:+19725551212 at 10.10.10.252:5060 at 10.10.10.252:5060>
>>>
>>>
>>> Note the sip:sip:+XXXX header.  What's the trick?  The avp_subst is
>>> effectively a no-op because the RURI doesn't contain the  
>>> pattern.  I think
>>> I'd get the same result with:
>>>
>>>                 avp_write("$ruri/username","$avp(s:tmp_uri)");
>>>                 avp_pushto("$ruri/username","$avp(s:tmp_uri)");
>>>
>>> -g
>>>
>>> On 8/21/06, Greg Fausak <lgfausak at gmail.com> wrote:
>>> > I want to use the RURI username in an avp query.
>>> > I've seen a bunch of different ways to select it.
>>> > Which way is correct?
>>> >
>>> > I am currently using $ruri/username, because I got an error  
>>> with $rU.
>>> >
>>> > http://openser.org/docs/pseudo-variables.html shows '$rU', which
>>> > complains when
>>> > I try to reference that.
>>> >
>>> > Aug 21 06:55:58 www openser[89119]: ERROR:avpops:fixup_pushto_avp:
>>> > unsupported  destination "$rU"; expected $ru,$du,$br
>>> > Aug 21 06:55:58 www openser[89119]: ERROR: fix_actions: fixing  
>>> failed
>>> > (code=-1) at cfg line 82
>>> >
>>> > It's weird, the source code in items.c reads:
>>> >
>>> >          {{"ru", (sizeof("ru")-1)}, /* */
>>> >                  { XL_RURI, 0, xl_get_ruri, {{0, 0}, 0}, {0, 0}}},
>>> >          {{"ruri", (sizeof("ruri")-1)}, /* */
>>> >                  { XL_RURI, 0, xl_get_ruri, {{0, 0}, 0}, {0, 0}}},
>>> >          {{"rU", (sizeof("rU")-1)}, /* */
>>> >                  { XL_RURI_USERNAME, 0, xl_get_ruri_attr, {{0, 1},
>>> > 0}, {0, 0}}},
>>> >
>>> > Is there a list of the variables that are available in an avp  
>>> operation?
>>> >
>>> > -g
>>> >
>>> >
>>>
>>>
>>> -- 
>>> Greg Fausak
>>> greg at thursday.com
>>>
>>
>>
>