Hello,
I have a question regarding Kamailio script and how the return code from a
command export is handled as a boolean.
In Kamailio script, see this example:
if (!jansson_get("method", $rb, "$var(method)")) {
xhttp_reply("400", "Bad Request", "", "");
exit;
}
This code works, but I'm not sure why.
Command "jansson_get" returns 1 if successful, and -1 if fails. Both values
should be false.
Which I can see when testing with this:
$var(r) = jansson_get("method", $rb, "$var(method)");
xlog("L_INFO", "jansson_get r: [$var(r)]\n");
if (!$var(r)) {
xlog("L_INFO", "jansson_get r: [$var(r)] => FALSE\n");
} else {
xlog("L_INFO", "jansson_get r: [$var(r)] => TRUE\n");
}
In all cases, the result is always TRUE.
Is there some kind of "magic" conversion when directly checking the return of a
command in Kamailio script ?
With KEMI python, the equivalent does not work:
if not KSR.jansson.get("method", KSR.pv.get("$rb"),
"$var(method)"):
KSR.xhttp.xhttp_reply(400, "Bad Request", "", "")
return 1
So I have to do the following instead:
if KSR.jansson.get("method", KSR.pv.get("$rb"), "$var(method)")
< 0:
KSR.xhttp.xhttp_reply(400, "Bad Request", "", "")
return 1
Thank you for your help.
Regards,
Nicolas.
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