Scripting issues -grep

foonus

Hello all, please bear with the noobery ;D
I am trying to convert a script from Ubuntu to run on PfSense.

What i am trying to do is to obtain the IPv4 address from the ovpnc1 interface to use as "local_ip" variable later on in the script. I am doing this so that i don't have to manually edit the script each time the IP address changes.

Can' seem to get the thing to work and only pull the IPv4 address as it did in Ubuntu, on PfSense it spits out a long string of information, including MAC address and at the end of the string is the IP… i need the syntax to spit out the ipv4 address only as it did with Ubuntu. any idea how to get this working?
local_ip=$(ifconfig ovpnc1 | grep inet | awk -F: '{print $2}' | awk '{print $1}')

heper

what kind of script? would be trivial with php

mer

awk -F:

that is saying field separator is a colon.
ssh into your pfSense box or console and walk through the pieces by hand.

ifconfig ovpnc1 see what that looks like. On my FreeBSD 10.2 box all the parts are separated by a space.
If all you want is the IPV4 address, try:

local_ip=$(ifconfig ovpnc1 | grep inet | awk '{print $2}')

No "-F:", no "| awk '{print $1}'"

foonus

That one is working somewhat, it reports the following:
"
fe40::21b:21ff:fe41:c220%ovpnc1
10.104.1.6
"
Since the script needs the IPv4 address only saved as a variable to work, any additional data saved in that variable messes it up.
I need it to specifically show Only the IPv4 address, that was the major trouble I am having.

foonus

@heper:

what kind of script? would be trivial with php

Its a script i am trying to convert from here https://www.privateinternetaccess.com/forum/discussion/21085/port-forwarding-with-openvpn-on-linux-windows-pfsense-advanced-users
Intention is to automatically contact the VPN port server and have it open up ports for forwarding to the current dhcp assigned address.

I have gotten it completely working aside from the issue i am still having with being able to pull the IPv4 address as a variable in a clean form with no additional information (see last post).
To bypass it atm i am manually editing in my new VPN ip address each time as local_ip=10.x.x.x and then running the script but this is a hassle.

heper

create a new file in /etc/phpshellsessions (for example 'test123')
contents of the file:


$tmp=get_interface_info(opt2);
print_r($tmp['ipaddr']);

(change opt2, to whatever interface you have attached to openvpn)

it might better in your case to write the ip-addy to a file instead of printing it out like above:


$tmp=get_interface_info(opt2);
$testfile = fopen("/root/testfile.txt", "w") or die("unable to open file");
fwrite($testfile, $tmp['ipaddr']);
fclose($testfile);

in your bash/shell script you now only need to call:

 pfSsh.php playback test123

i'm pretty sure there are some awk ninja's over here that can get whatever you want, using command-line. I find it easier to use the developers shell.

enjoy

mer

@foonus:

That one is working somewhat, it reports the following:
"
fe40::21b:21ff:fe41:c220%ovpnc1
10.104.1.6
"
Since the script needs the IPv4 address only saved as a variable to work, any additional data saved in that variable messes it up.
I need it to specifically show Only the IPv4 address, that was the major trouble I am having.

What is the output of the first part:

ifconfig ovpnc1? I don't have anything configured with that interface, it would help me a lot trying to help you.

instead of grep inet, make it grep "inet "

add the quotes and a space after inet. right now "inet6" matches "inet"

heper

@mer:

@foonus:

That one is working somewhat, it reports the following:
"
fe40::21b:21ff:fe41:c220%ovpnc1
10.104.1.6
"
Since the script needs the IPv4 address only saved as a variable to work, any additional data saved in that variable messes it up.
I need it to specifically show Only the IPv4 address, that was the major trouble I am having.

What is the output of the first part:

ifconfig ovpnc1? I don't have anything configured with that interface, it would help me a lot trying to help you.

this is a general site2site, not going to a vpn-provider like OP. So awk is possible, when using NR to skip the ipv6 part.


[2.3-RC][root@pfsense.lan]/root: ifconfig ovpnc1 | grep inet | awk '{print $2}'
fe80::230:5ff:fe3d:7578%ovpnc1
192.168.222.2
[2.3-RC][root@pfsense.lan]/root: ifconfig ovpnc1 | grep inet | awk 'NR>1 {print $2}'
192.168.222.2
[2.3-RC][root@pfsense.lan]/root: ifconfig ovpnc1 
ovpnc1: flags=8051 <up,pointopoint,running,multicast>metric 0 mtu 1500
        options=80000 <linkstate>inet6 fe80::230:5ff:fe3d:7578%ovpnc1 prefixlen 64 scopeid 0xa 
        inet 192.168.222.2 --> 192.168.222.1 netmask 0xffffffff 
        nd6 options=21 <performnud,auto_linklocal>Opened by PID 60810
[2.3-RC][root@pfsense.vbees.lan]/root:</performnud,auto_linklocal></linkstate></up,pointopoint,running,multicast>

mer

Yep, NR works too.

foonus

Thanks for the help fellas, got it running ;D