Automatic Login by IP range

I’ve successfully implemented the Automatic Login Based on IP hack posted by Bruce last year. For single IPs that is.

Unfortunately, many larger institutions expect access for a range of IPs.

The only documentation I’ve found relates to banning ranges of iPs, which may not work the same way.

I’ve tried entering the IPs in the array separated by a hyphen like so:
‘123.45.0.0–123.45.206.235’

But it reportedly doesn’t work (and I can’t even think how to test it).

Can anyone be of assistance with this?

Thank you for your inquiry.

The hack I posted is meant as more of a guideline to how you could do this. To accomplish what you need you’ll need to check each section, by using PHP’s explode() function.

Perhaps something like this:

<?php
function s2hack_auto_login_ip()
	{
		$ip_min = 123.45.0.0;
		$ip_max = 123.45.206.235;
		$ip_cur = $_SERVER&#91;'REMOTE_ADDR'&#93;;
		
		$ip_min_exp = explode('.', $ip_min);
		$ip_max_exp = explode('.', $ip_max);
		$ip_cur_exp = explode('.', $ip_cur);
		
		if($ip_cur_exp&#91;0&#93; >= $ip_min_exp[0] && $ip_cur_exp[0] <= $ip_max_exp&#91;0&#93;)
			{
				if($ip_cur_exp&#91;1&#93; >= $ip_min_exp[1] && $ip_cur_exp[1] <= $ip_max_exp&#91;1&#93;)
					{
						if($ip_cur_exp&#91;2&#93; >= $ip_min_exp[2] && $ip_cur_exp[2] <= $ip_max_exp&#91;2&#93;)
							{
								if($ip_cur_exp&#91;3&#93; >= $ip_min_exp[3] && $ip_cur_exp[3] <= $ip_max_exp&#91;3&#93;)
									{
										/**/
										$id = 1; # The ID of the user you wish to log the visitor in as / Could also be User's Login
										/**/
										$user = new WP_User($id);
										$user_pass = md5($user->user_pass);
										/**/
										wp_login($user_login, $user_pass, true);
										wp_setcookie($user_login, $user_pass, true);
										wp_set_current_user($user->ID, $user_login);
									}
							}
					}
			}
	}
add_action('plugins_loaded', 's2hack_auto_login_ip');

The above code isn’t tested, and may need some tweaks.

That’s about as far as we can go with custom code. If you need further assistance, we recommend http://jobs.wordpress.net, or another freelance web site where WordPress® experts are offering their expertise through a bid on your project.

Thanks for your quick response Bruce.

Your suggestion confirms that this particular customization is beyond my abilities.

If you guys offered this functionality as an add-on module or even a stand-alone plugin I’m sure many users would pay extra for it.

I’ll have our development team look into adding this functionality in a future version of s2Member.

My client might be prepared to contribute a small amount towards development costs.

If anyone else reading this needs this function, please lobby s2member to get it moved up the priority list.

I understand that both Joomla and Drupul have modules that allow auto-login by IP, but this not currently easy with WordPress.

My client badly needs this functionality, so I will follow up your suggestion above of getting a free-lance developer to quote on this if you guys aren’t interested.

I’m thinking it would be so great to have a page in the s2member admin where allowed IPs, ranges of IPs and IPs with wildcards could be entered.

If they could be labeled by institution as well, to make updating simple, that would be fantastic.

And if Quick Cache could be then instructed to ignore those IPs all would be perfect.

Yeah, it’ll be better/quicker if you post the job in a freelancer site. We’re really busy with development right now and can’t prioritize feature requests like this at the moment. Sorry about that, and I hope you find a very competent freelancer that does exactly what you need. :)