[OpenSIPS-Users] dp_translate() on other headers?

Kingsley Tart kingsley at dns99.co.uk
Fri Mar 26 16:09:02 EST 2021


I'm using OpenSIPS 3.1.

I've set up some dialplan rule sets to normalise numbers depending on
the carrier, eg:

> match_exp         | subst_exp           | repl_exp |

> ^\+44[1-9][0-9]+$ | ^\+44([1-9][0-9]+)$ | 0\1      |
> ^\+[1-9][0-9]+$   | ^\+([1-9][0-9]+)$   | 00\1     |
> ^\+44\*[0-9]+$    | ^\+44\*([0-9]+)$    | \1       |


but I also need to do this with other headers that may be present and
contain numbers, eg


I know I can extract the number from the header eg like this:

if (is_present_hf(P-Asserted-Identity)) {
  if (dp_translate(1, $(hdr(P-Asserted-
Identity){nameaddr.uri}{uri.user}), $var(newnum))) {
    xlog("New value is $var(newnum)");

but is there an equally neat way of putting the new value back inside
the header string? I can't use $(hdr(P-Asserted-
Identity){nameaddr.uri}{uri.user}) as an lvalue.

Otherwise I presume I'm going to have to make my dialplan regex matches
try to home in on the number part by having "sip:" instead of my "^"
anchor and "@" instead of my "$" anchor in the match rule and hope that
doesn't happen to match anything else in the header (unlikely I know,
but not impossible).

Forgive me if I've missed something obvious - I'm new to OpenSIPS.


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