Preg_match help.....

ajd335

Hey all,
I actually want to have a script which can give me the host name , IP address and the MAC address of the remote computer on which it is running.

I have written the code, and I am getting output like that below

host1(ip1) at (mac-add1) on fxp9 [ethernet] host2(ip2) at (mac-add2) on fxp9 [ethernet]  host(ip) at (mac-add) on fxp9 [ethernet] .......   And so on

I want the data of the whole line which contains my hostname and ip address. in above result ..i have stored my host-name and IP address in the $host and $ip variable respectively .
So is it possible with preg_match statment...I have tried many...

Please help out..
Thanks,

bretticus

I actually want to have a script which can give me the host name , IP address and the MAC address of the remote computer on which it is running.

Ummm...forget the mac address. Unless the remote machine is on the same LAN. This looks like perhaps you are getting the output of something like passthru('arp -a $remotehost');

Being able to match this with a regexp is totally possible. What do you have so far?

ajd335

bretticus wrote:
Ummm...forget the mac address. Unless the remote machine is on the same LAN. This looks like perhaps you are getting the output of something like passthru('arp -a $remotehost');

Being able to match this with a regexp is totally possible. What do you have so far?

hey ....I have changed my code to something like below ,

I am trying to fetch the MAC address. i have written the following code,

$mac =get_mac();
print_r($mac);

function get_mac()
{
exec('ipconfig/all',$output);
return $output ;
}

It gives me out-put Array() .And not the whole output of ipconfig/all as i am getting while running on DOS prompt.

If i put "date" instead of "ipconfig/all" I am getting perfect answer of
Array ( [0] => Mon Jun 30 11:16:16 PDT 2008 )
But not for ipconfig , what is wrong with that ?

bradgrafelman

The output of the "date" command looks like the Unix program.

Are you sure your website isn't hosted on a Unix-based O/S and not Windows (hint: the answer is most likely YES)? If so, "ipconfig" isn't the correct program name for most Unix-based O/S's (in fact, none that I know of - it's usually a program called "ifconfig" instead).

EDIT: Yes, it's now obvious with the context of your first post that your server isn't Windows-based.

ajd335

bradgrafelman wrote:
The output of the "date" command looks like the Unix program.

Are you sure your website isn't hosted on a Unix-based O/S and not Windows (hint: the answer is most likely YES)? If so, "ipconfig" isn't the correct program name for most Unix-based O/S's (in fact, none that I know of - it's usually a program called "ifconfig" instead).

EDIT: Yes, it's now obvious with the context of your first post that your server isn't Windows-based.

Hey bradgrafelman ,
I have used Ifconfig also , but it doesn't show the physical address(MAC address) as it does in ipconfig/all .. Even I have used arp -a (on shell). But the problem is some PC are having more than one N/w card and so more than 1 IP . And in arp -a , i have done preg_match starting with the IP address. So , its not always true...
(As they might have more than 1 IP)..

Do you think any other way i can do this ?

And ya, if i use passthru("ipconfig/all",$output) , return var_dump($output), then I am getting int(127)....So why am I getting this ?

bretticus

ajd335 wrote:
Hey bradgrafelman ,
I have used Ifconfig also , but it doesn't show the physical address(MAC address) as it does in ipconfig/all .. Even I have used arp -a (on shell). But the problem is some PC are having more than one N/w card and so more than 1 IP . And in arp -a , i have done preg_match starting with the IP address. So , its not always true...
(As they might have more than 1 IP)..

Do you think any other way i can do this ?

And ya, if i use passthru("ipconfig/all",$output) , return var_dump($output), then I am getting int(127)....So why am I getting this ?

The point is that if you are on a nix machine, ipconfig is not available for your to use because the equivalent (who know why microsoft changed it from ifconfig) in nix is ifconfig. int(127) is probably a shell error code for "no such file..." or "command not found."

Which makes me think, if this is a network you are not familiar with, why are you trying to get mac addresses in the first place? Again, you will only get mac addresses for LAN nodes of the server where the command is being ran (ie. all nodes with the same netmask as the server you are runnng the command from.)

Now, I'm not accusing you of any wrong doing, but this just seems strange to me. Perhaps you could explain what your are trying to do and we could thus offer a few suggestions.

ajd335

bretticus wrote:
The point is that if you are on a nix machine, ipconfig is not available for your to use because the equivalent (who know why microsoft changed it from ifconfig) in nix is ifconfig. int(127) is probably a shell error code for "no such file..." or "command not found."

Which makes me think, if this is a network you are not familiar with, why are you trying to get mac addresses in the first place? Again, you will only get mac addresses for LAN nodes of the server where the command is being ran (ie. all nodes with the same netmask as the server you are runnng the command from.)

Now, I'm not accusing you of any wrong doing, but this just seems strange to me. Perhaps you could explain what your are trying to do and we could thus offer a few suggestions.

Hi bretticus ,
I am trying to get MAC address, because its a part of the project , in which I am assigned to do the MAC address thing. N yes , all the PCs are in LAN.
As i have mentioned above , ifconfig is not giving me the physical Address.

I also Used arp -a , which works perfect . But the thing is , one computer might have more than one N/W cards and so the IP address , In in arp -a , I have pointed the IP address , and then have found MAC using preg_match. So its not working for all..

Do you have any Idea , what should I use.Does shell have any commands ,which can directly give me MAC address (Rather than Ifconfig and arp -a)..

Thanks for you help ...

bretticus

Ok, fair enough.

Here's something that still confuses me...

Are you running the php code (via apache or command line) from each node on the lan? Or are you trying to get all the mac addresses for the LAN from a single node?

I ask because "arp -a" just gives hosts in the arp cache (probably all nodes on the lan but possibly not.) Anyways, my point is that you need arp if you are gathering mac addresses from the network. Because ifconfig is for the local machine only. In other words, ifconfig is only applicable if all nodes run the php script.

I guess I don't understand the problem with "arp -a" that you mention. If the cards have multiple ips they all have the same mac address, right? Get one mac from one of the ips and you still have the mac.

"ifconfig -a" gives the mac address "HWaddr" for all network devices on the server running the PHP script.

bretticus

If you pipe ifconfig -a through awk you can get just the mac addresses wihout having to parse via php scripting.

ifconfig -a | awk '/HWaddr/ {print $5}'

ajd335

bretticus wrote:
If you pipe ifconfig -a through awk you can get just the mac addresses wihout having to parse via php scripting.

ifconfig -a | awk '/HWaddr/ {print $5}'

Thanks Bretticus for your Help..
Bretticus , Ifconfig does not shows me any field like HWaddr ....

But , I have written a script ,

function get_mac()
{
// $user_mac = shell_exec('arp -a'.$ip);
$user_mac = shell_exec('arp -a');
return $user_mac;
}
$str = $mac;
$var = preg_match("/$ip(.*)on/",$str,$matches);
$temp = $matches[1];
$var1 = preg_match("/at(.*)/",$temp,$matches);
print_r($matches[1]);

That does give me correct answer when i run on my PC.But if run on other (which is connected ) , it does give me IP and Host-name correct , but not the physical address. So what can be causing the problem ..
In above code , i have used perg_match for fetching the MAC from the result of arp -a...
Thanks a lot for your help, I really appreciate.

bretticus

Here's something that still confuses me...

Are you running the php code (via apache or command line) from each node on the lan? Or are you trying to get all the mac addresses for the LAN from a single node?

capiche?

ajd335

bretticus wrote:
capiche?

Hi Bretticus ,
Now let me clear the things...I have to make a script , which i can run on each PC in our work group , And that sccript should find out each individual's MAC , IP and Host ..We want to have record for that...So its needed..So basically I am going to run that script on each individual's PC..Hope you got my Point..Thanks....

bretticus

Okay, that makes sense. Does each PC in your workgroup have the ability to run a PHP script? Furthermore, is each PC running Linux?

ajd335

bretticus wrote:
Okay, that makes sense. Does each PC in your workgroup have the ability to run a PHP script? Furthermore, is each PC running Linux?

Hi Bretticus ,
Yes, all PCs in work group does have the ability to run PHP as well each PC running Linux...

bretticus

I assume you have shell access to your computer at least. What happens when you run "ifconfig -a" from command line?

ajd335

yes

ajd335

bretticus wrote:
I assume you have shell access to your computer at least. What happens when you run "ifconfig -a" from command line?

yes Bretticus ,
I do have shell access to my computer.

when i do ifconfig -a
i got following results,

fxp0: flags=8843<UP,BROADCAST,MULTICAST> mtu 1200
        options=8<VLAN_MTU>
        inet6 fe80::           :1923%fxp0 prefixlen 64 scopeid 0x1 
        inet ....... netmask 0xff000000 broadcast 20.255.255.255
        ether 
        media: 
        status: active
fxp1: flags=8834<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
        options=8<VLAN_MTU>
        ether 
        media: 
        status: 
plip0: flags=1088<POINTOPOINT,NEEDSGIANT> mtu 1500
lo0: flags=8022<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16322
        inet6 ::
        inet6 fe80::

and nothing like HWaddr
...Thanks

ajd335

bretticus wrote:
I assume you have shell access to your computer at least. What happens when you run "ifconfig -a" from command line?

hey Bretticus,
So whts creating the problem..

bretticus

Well, that answers one question....your machine is freebsd most likely (not linux.)

I have access to a freebsd machine and when I run just an ifconfig I get a mac address right after "ether".

So I dunno how your machine is configured differently, but this thread has devolved from a PHP thread to a networking type. The point is, you may need to look for help from a *bsd forum and then once you can actually produce a mac address from a shell command, come back here if you have problems getting the output when using PHP to run the shell command.

ajd335

bretticus wrote:
Well, that answers one question....your machine is freebsd most likely (not linux.)

I have access to a freebsd machine and when I run just an ifconfig I get a mac address right after "ether".

So I dunno how your machine is configured differently, but this thread has devolved from a PHP thread to a networking type. The point is, you may need to look for help from a *bsd forum and then once you can actually produce a mac address from a shell command, come back here if you have problems getting the output when using PHP to run the shell command.

hey Bretticus ,
Thanks , Ill Search for that..Thanks for your help..