29 Mar
2010
29 Mar
'10
7:06 p.m.
while playing with dp_translate(), i noticed the following weird
behavior.
i have a rule with dpid=11, where match_exp='^\+' and subst_exp and
repl_exp are empty.
my test goes like this:
$rU = "+35892345670";
if (dp_translate("11", $rU/$rU")) {
xlog("ruri user is '$rU'\n");
};
$var(test) = "+35892345670";
if (dp_translate("11", "$var(test)/$var(test)")) {
xlog("var(test) is '$var(test)'\n");
};
and this is produced to syslog:
Mar 29 20:01:39 localhost /usr/sbin/sip-proxy[20533]: ERROR: ruri user is
'+35892345670'
Mar 29 20:01:39 localhost /usr/sbin/sip-proxy[20533]: ERROR: var(test) is ''
that is, $rU is not translated to empty string, but $var(test) is.
can someone provide an explanation for this? what should the expected
behavior be, when subst_exp and repl_exp are empty?
original author of dialplan module is Andreea-Ancuta Onofrei, but i
don't know if he is still around.
-- juha
29 Mar
29 Mar
9:16 p.m.
Judah Heinanen writes:
can someone provide an explanation for this? what
should the expected
behavior be, when subst_exp and repl_exp are empty?
in dialplan.c/dp_update function i found this:
no_change = ((!repl->s) || (!repl->len)) && (src->type == dest->type)
&& ((src->type == PVT_RURI) || (src->type == PVT_RURI_USERNAME));
that is, if repl_exp is empty, no replacement is done if src/dest is
$ru/$ru or $rU/$rU.
dp_repl.c/rule_translate function returns immediately if repl_exp is
empty:
if(!repl_comp){
LM_INFO("null replacement\n");
return 0;
}
it does that even if subst_exp is not empty, because the above test is
before this test:
if(subst_comp){
does anyone object if i change the no_change assignment to
no_change = (!repl->s) || (!repl->len);
that is, dest is left as is when repl_exp is empty no matter what kind
of pv dest is?
-- juha
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