(:redirect Documentation.Tutorials-Redirect quiet=1 :)

You will also notice in this example the use of the function exec_dest(). This function calls an external script and assumes that the script returns a SIP URI. Then sets the "Contact" header to the returned SIP URI. You can also use pseudo variables in the exec_dset() function. In this example $tU (To Username) and $fU (From Username) are used.

@]

NOTE: To get this to work correctly with Asterisk you need to add "promiscredir=yes" to the general section of your sip.conf

@]

Now here is just a dummy script that echoes a SIP URI. You can make it any script you want but is needs to output a valid SIP URI to standard out: (IE. sip:+12125551212@domain.com)

[@

1. !/bin/sh

echo sip:+12125551212@domain.com

    if ( src_ip == 10.x.x.x || src_ip =~ "^192\.168\..*") {
        if(method == "INVITE") {
            exec_dset("/usr/local/bin/local_check $fU $tU");
            sl_send_reply("302","LCR Redirect");

            route(1);

    } else {
        sl_send_reply( "403", "You are not allowed here!" );
        exit;
    }

You will also notice in this example the use of the function exec_dest(). This function calls an external script and assumes that the script returns a SIP URI. Then sets the "Contact" header to the returned SIP URI.

You will also notice in this example the use of the function exec_dest(). This function calls an external script and assumes that the script returns a SIP URI. Then sets the "Contact" to the return SIP URI.

You will also notice in this example the use of the function exec_dest(). This function calls an extern script and assumes that the script returns a SIP URI. Then sets the "Contact" to the return SIP URI.

You will need to load the exec.so module so you can run external scripts

SIP Redirect with script example

You will need to load the exec.so module so you can run extern scripts

@]

In this snippet I am restricting by IP address and by a IP range. You will notice that I used a regular expression to determine the IP range 192.168.0.0/16. You will also notice in this example the use of the function exec_dest(). This function call an extern script and assumes that the script returns a SIP URI. Then sets the "Contact" to the return SIP URI.

[@ route {

        if ( src_ip == 10.x.x.x || src_ip =~ "^192\.168\..*") {

SIP Redirect with script example

# $Id: opensips.cfg 6464 2009-12-24 08:00:54Z bogdan_iancu $
#
# OpenSIPS basic configuration script
#     by Anca Vamanu <anca@voice-system.ro>
#
# Please refer to the Core CookBook at:
#      http://www.opensips.org/index.php?n=Resources.DocsCookbooks
# for a explanation of possible statements, functions and parameters.
#


####### Global Parameters #########

debug=0
log_stderror=no
log_facility=LOG_LOCAL0

#fork=yes
#children=4
#port=5060
#listen=udp:10.210.2.92:5060

/* uncomment the following lines to enable debugging */
#debug=6
#fork=yes
#log_stderror=yes


####### Modules Section ########

#set module path
mpath="/usr/local/thing5/lib/opensips/modules/"

/* uncomment next line for MySQL DB support */
#loadmodule "db_mysql.so"
loadmodule "signaling.so"
loadmodule "sl.so"
loadmodule "tm.so"
#loadmodule "rr.so"
loadmodule "maxfwd.so"
#loadmodule "usrloc.so"
#loadmodule "registrar.so"
#loadmodule "textops.so"
loadmodule "mi_fifo.so"
loadmodule "uri.so"
loadmodule "xlog.so"
loadmodule "acc.so"
loadmodule "exec.so"

# ----------------- setting module-specific parameters ---------------


# ----- mi_fifo params -----
modparam("mi_fifo", "fifo_name", "/tmp/opensips_fifo")


# ----- rr params -----
# add value to ;lr param to cope with most of the UAs
#modparam("rr", "enable_full_lr", 1)
# do not append from tag to the RR (no need for this script)
#modparam("rr", "append_fromtag", 0)


# ----- registrar params -----
/* uncomment the next line not to allow more than 10 contacts per AOR */
#modparam("registrar", "max_contacts", 10)


# ----- usrloc params -----
#modparam("usrloc", "db_mode",   0)
/* uncomment the following lines if you want to enable DB persistency
   for location entries */
#modparam("usrloc", "db_mode",   2)
#modparam("usrloc", "db_url",
#       "mysql://opensips:opensipsrw@localhost/opensips")


# ----- uri params -----
modparam("uri", "use_uri_table", 0)


# ----- acc params -----
/* what sepcial events should be accounted ? */
modparam("acc", "early_media", 1)
modparam("acc", "report_ack", 1)
modparam("acc", "report_cancels", 1)
/* by default ww do not adjust the direct of the sequential requests.
   if you enable this parameter, be sure the enable "append_fromtag"
   in "rr" module */
modparam("acc", "detect_direction", 0)
/* account triggers (flags) */
modparam("acc", "failed_transaction_flag", 3)
modparam("acc", "log_flag", 1)
modparam("acc", "log_missed_flag", 2)
/* uncomment the following lines to enable DB accounting also */
modparam("acc", "db_flag", 1)
modparam("acc", "db_missed_flag", 2)



####### Routing Logic ########


# main request routing logic

route{

        if (!mf_process_maxfwd_header("10")) {
                sl_send_reply("483","Too Many Hops");
                exit;
        }

        if ( msg:len >=  2048 ) {
                sl_send_reply( "513", "Message too big" );
                return;
        }

        if ( src_ip == 10.240.2.40 || src_ip == 10.240.2.60 || src_ip == 10.210.2.243) {
                if(method == "INVITE") {
                        exec_dset("/usr/local/thing5/bin/local_check $fU $tU");
                        sl_send_reply("302","LCR Redirect");
                } else {
                        route(1);
                }
        } else {
                        sl_send_reply( "403", "You are not allowed here!" );
                        exit;
        }


}

route[1] {
        if ( ! t_relay() ) {
                sl_reply_error();
        }

}

failure_route[1] {
        if (t_was_cancelled()) {
                exit;
        }
}