One Voucher Per Device

wazim4u

@Gertjan said in One Voucher Per Device:

caveat

I would like to know if you have some latest development on your patch ( one voucher per device ) for 2.5.0 version. I have taken risk to use 2.5-Development version for captive portal service up to 2200 user with voucher system. testing service is running for one week and so far there is no issue and all issues i was facing like reboot system or changing setting in 2.4.4-p3 captive portal gone... made life easy for me. i have implemented your patch again to lock user with first login. It is working fine since 1 week. with a little bit of issues so far which i think fixable.

1-when you try to login again with already active voucher it gives error page in two forms field. one is giving notice ( reuse of authentication not allowed ) and second form ( voucher expired ) it should be only first one in this case.
reuse voucher.jpg

2- Secondly it should be MAC based authentication not MAC & IP. if someone add voucher and his lease is changed from 1.1.1.1 to 2.2.2.2 he will not able to login again even MAC ( device ) is same. this is major problem at the moment.
Auth log.jpg

3- Getting some crash error but doesn't effect captive portal operation.

non numeric-value  encountered in etc/inc/captiveportal.inc on line 1955

Gertjan

@wazim4u said in One Voucher Per Device:

1-

These two 'error' screen show one after the other ?

2

I guess I understand. When a device comes back, and its original DHCP lease is already reused - re assigned - to another device this happens. The MAC/IP pair will be different.
Simple solution : make the DHCP lease pool size for the portal really big.
Furthermore, the portal_allow() function scans over the connected user database using this selection criteria :

	/* read in client database */
	$query = "WHERE ip = '{$clientip}'";

which implies that the IP should be the same ...
( change this to {$clientmac} and see what happens ^^)

3 ....

You changed the etc/inc/captiveportal.inc file so I don't know what is this '1955' line is doing.
Can you show some code on that sport ?

wazim4u

@Gertjan said in One Voucher Per Device:

$clientmac

1- Yes it comes side by side on Desktop like the image and on mobile view it comes up and down.

2- DHCP lease already one month. do you want me to make it more ? that's first solution secondly the option you have given to change client ip query to client mac. this option is in two places which one to change if you can please guide i will test and let you know.

A:

/* read in client database */
	$query = "WHERE ip = '{$clientip}'";
	if (isset($config['captiveportal'][$cpzone]['noconcurrentlogins'])) {
		$tmpusername = SQLite3::escapeString(strtolower($username));
		$query .= " OR (username != 'unauthenticated' AND lower(username) = '{$tmpusername}')";
	}
	$cpdb = captiveportal_read_db($query);

B:

/* read in client database */
	$query = "WHERE ip = '{$clientip}'";
	$cpdb = captiveportal_read_db($query);
	foreach ($cpdb as $cpentry) {
		return $cpentry;
	}

3- I didn't change anything in code for reference i will give 1955 image attached below.

portal 1955_Line.png

Gertjan

Hummmm.

See https://pastebin.com/V6uWHNz5 - that's the file, right ?
Convert line 2353 and 2370 into comments (put a // at the beginning of the line ).

DHCP pool size, not lease size.
Bigger pool means : leases will be recycled less faster == more chance that the same device gets the same IP when it reconnects.

For A: that one, yes.
Not B : you'll be changing the behaviuour that that function ( function captiveportal_isip_logged($clientip) ) and you'll break things.

$ridx +=2 is a very classic numerical expression for "add 2 to $ridx". Also, $rdix is set to "2000" up front, which is also a number - at least, last time I checked, it was.
So, your

non numeric-value encountered in etc/inc/captiveportal.inc on line 1955

scares me ....
You're running out of place for the dual rules (env ( 64500-2000) / 2 ) or 31250registred "logged in user" rules .... ???
You should see log messages like "Zone: {$cpzone} - WARNING! Captive portal has reached maximum login capacity"

wazim4u

@Gertjan

Converted line 2353 & 2370 as mentioned ( // ) now i can see only single page but message is Expired voucher " it should be reuse authentication not allowed or similar custom like concurrent login not allowed .

2- DHCP pool is already /19 8190 Available IPs and only 2500 users the lease time is 1 month.

/* read in client database */
	$query = "WHERE ip = '{$clientip}'";

changing $clientip to $clientmac has no impact. i disabled whole line starting from $query and it worked with some error but connected me with other IP with same MAC . ( just tested or played around ) other MAC still not allowed to login.

3- there is no warning in logs for maximum login capacity we have only 2500 users as mentioned before.

i think DHCP option will be best to handle this at the moment. to keep same ip assigned to clients always.

wazim4u

@Gertjan

did you get any way to unbind MAC with IP ? if only MAC is authentication for second login with same voucher so system can work perfectly . DHCP sometimes renew IP of some clients so we have to disconnect them to let them use the voucher again because it binds with MAC & IP . else your patch is working perfectly .

Gertjan

@wazim4u said in One Voucher Per Device:

did you get any way to unbind MAC with IP ?

That means a rather big rewrite of most functions in /etc/inc/captiveportal.inc ....
Portal code is IP and MAC based ....
This exists :

but that one doesn't interest you ...

@wazim4u said in One Voucher Per Device:

DHCP sometimes renew IP of some clients so

Yep, and the DHCP will renew the IP -> and it will grant the SAME IP.
One exception : if this IP is already used by some other device (pool to small, so IP's get recycled).
On my portal, I always receive the same IP when I connect with my PC or Phone.

Iahmad

hi all,
voucher to device binding is must require feather i ma requesting net gate management to add this feather to coming version..
@Gertjan @wazim4u @colleytech

layek

@Gertjan how to get this option.

Gertjan

You mean a pfsense feature requests ?

layek

@Gertjan thanks for your reply. i want to setup vouchers for 1st device only.

free4

@layek sure

the feature request is here : https://redmine.pfsense.org/issues/9432

feel free to make a pull request for implementing this feature !

layek

@free4 thats mean this feature not possible right now with latest version?

ajmaltms

upto 2.4.3 version its working fine..hope they will implement in latest version too in 2.4.4 series

Gertjan

I can propose some kind sort of temporary solution :

First, tell people that they can't use vouchers on more then one device. If the voucher is used more then one device, it will expire right away.
This means : the initial, first connection also stops, the person using it will now really understand he shouldn't share the voucher - not even with himself on his other device.

Then, execute your warning :

Open file /etc/inc/captiveportal.inc
Locate this line : https://github.com/pfsense/pfsense/blob/64031495039dcbfa2f3d5a6eb09f70a46d74d83f/src/etc/inc/captiveportal.inc#L2369
Just before the "break;" instruction, add these two lines :

			voucher_expire($username); /* added */
			captiveportal_logportalauth($cpentry[4], $cpentry[3], $cpentry[2], "CONCURRENT LOGIN - TERMINATING THE VOUCHER"); /* added */

It should look like :

			/* This user was already logged in so we disconnect the old one */
			captiveportal_disconnect($cpentry, 13);
			captiveportal_logportalauth($cpentry[4], $cpentry[3], $cpentry[2], "CONCURRENT LOGIN - TERMINATING OLD SESSION");
			$unsetindexes[] = $cpentry[5];
			voucher_expire($username); /* added */
			captiveportal_logportalauth($cpentry[4], $cpentry[3], $cpentry[2], "CONCURRENT LOGIN - TERMINATING THE VOUCHER"); /* added */
			break;

Note :
I didn't try this out myself.
Users will not get disconnected right away. If all goes as planned, they will get disconnected the next time the 'pruning' process runs, that's in : after 60 seconds.

Tell me if this works

wazim4u

@ajmaltms @ishtiaqaj @layek i took a risk as mentioned before and deployed 2.5 development version of pfsense on my two sites one about 2500 captive portal users & second 1500 captive portal users. i have applied patch given by Gertjan with some tricks ( DHCP Lease ) to make it work. since 2 months not a single issue i have found and everything works smoothly.

only one device able to login no concurrent login " Reuse of identification not allowed" is message if you try to login with same voucher to other device. i have given details above in this thread already. Until we get some permanent solution you can go with this.

@Gertjan as development version daily snapshot keep updating day by day so i request you to provide guide to make changes to /etc/inc/captiveportal.inc as its not logical to copy paste the captiveportal.inc old file with new updated one each time, can have multiple issues because of some code changes in new version. for me i have stopped updating development version since its working fine.

Gertjan

@wazim4u said in One Voucher Per Device:

i took a risk as mentioned before and deployed 2.5 development version of pfsense on my two sites one about 2500 captive portal users & second 1500 captive portal users. i have applied patch given by Gertjan with some tricks ( DHCP Lease ) to make it work. since 2 months not a single issue i have found and everything works smoothly.
only one device able to login no concurrent login " Reuse of identification not allowed" is message if you try to login with same voucher to other device. i have given details above in this thread already. Until we get some permanent solution you can go with this.

Your talking about the other thread where I proposed another " Reuse of (voucher) identification not allowed " solution ?

wazim4u

@Gertjan yes you mentioned in another thread but we have already discussed this in detail about this patch in this thread if you get back a little bit you will find our discussion. I was having two basic issues, First one is when Reuse of identification not allowed" appears it shows two login forms side by side & other problem was if IP changes for already logged in user it gives same error Reuse of identification not allowed" even this device is same.
I have made 1 year Lease in DHCP & increase the IP Pool to make it work and there is no more issue.

colleytech

@Gertjan , this edited codes below were of great help to me, in ensuring one voucher per device and second device will not get connected with same voucher,,,,,

now i installed a new pfsense 2.4.4 p3, but the code doesnt seem to be working,,,,
@ajmaltms @Gertjan do u, by any chance still have the iso for 2.4.4 p2

Here we go:
This is the new /etc/inc/captiveportal.inc file:
https://pastebin.com/V6uWHNz5
This is the new /usr/local/www/services_captiveportal.php file.
https://pastebin.com/QLhNhgAW

Gertjan

Noop.

2.4.4-p2 doesn't exist any more.

The code/script - several lines of PHP here and there, would most probably still work, it needed to be phrased in by hand.