[Kamailio-Users] What is the best (and secure) way to change FROM_URI using regexp?
Fernando Frota M Morais
frota at cecom.ufmg.br
Tue Feb 16 02:21:27 CET 2010
Before sending this message I looked for an answer and found some options, two
of them are followed:
1) SUBST function, sample listed here:
if (is_present_hf("User-Agent"))
{
remove_hf("User-Agent");
remove_hf("P-Asserted-Identity");
subst("/^From: \".+\" (<sip: *[a-zA-Z0-9_\.-]+ <at> .*>)/From: \1/ig");
subst("/^To: \".+\" (<sip: *[a-zA-Z0-9_\.-]+ <at> .*>)/To: \1/ig");
}
2-a) uac_replace:
if (from_uri=~"^sip:10804007\@voip.mydomain") {
xlog("L_ALERT", "TESTANDO - Original From is ($fu-$fn)\n");
# uac_replace_from("sip:031" . $fU . "\@voip.mydomain");
uac_replace_from("Frota10804007","sip:03110804007 at voip.mydomain");
xlog("L_ALERT", "TESTANDO - From changed to ($fu-$fn)\n");
};
OR :
2-b) uac _replace #2:
if (from_uri=~"^sip:10804007\@.*") {
xlog("L_ALERT", "Route 21 - Original from is ($fu-$fn)\n");
$avp(from)=$fu;
# $avp(to)=$ru;
# avp_pushto("$ru", "$avp(from)");
avp_subst("$avp(from)", "/(sip:)/sip:031/");
uac_replace_from("$avp(from)");
# xlog("L_ALERT", "Route 21 - From changed to ($fu-$fn)\n");
# avp_pushto("$ru", "$avp(to)");
};
}
OR
Looks like uac_replace is safer then "subst" function, because it can be
reverted, but I did not found a way to use concatenation or any other kind of
string operation as a parameter for it. I don't want to start a discussion, I
need only a few lines showing me how to change from_uri_from from
"sip:108xxxx" to "sip:031108xxxx".
Thanks in advance,
--
Fernando Frota Machado de Morais
Divisao de Redes de Comunicacao
Centro de Computacao
Universidade Federal de Minas Gerais
Brasil
Tel. +55(31)3409.4007 Fax. +55(31)3409.4004
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