exporting dymanic ip address to a file using php

6millionbucks · 07-23-2007, 08:21 PM

Hello All, this is my first post EVER so I apologies in advance for any newbie pet peeves. I recently installed postfix/spamass./clamav/amavisd/mysqld/php on a dedicated server and after a couple sleepless nights have my mail server running nicely. I have one problem left to solve.

I found a php file a few years ago that will display my current dynamic ip address

<?
if(getenv("HTTP_CLIENT_IP")) {
$ipad = getenv("HTTP_CLIENT_IP");
} elseif(getenv("HTTP_X_FORWARDED_FOR")) {
$ipad = getenv("HTTP_X_FORWARDED_FOR");
} else {
$ipad = getenv("REMOTE_ADDR");
}
$ipad = substr($ipad, 0,14);
echo "$ipad 0";
?>

I changed the last line from

echo $ipad;
to
echo "$ipad 0";

in order to include the zero after the IP address. What I would like this script to do now is export the "$ipad 0" to a file, lets say /etc/postfix/ipfile

I tried different variances of

echo "$ipad 0" >/etc/postfix/ipfile;

but keep getting syntax errors. Your help is greatly appreciated.

baikonur · 07-24-2007, 01:53 AM

Quote:

I changed the last line from

echo $ipad;
to
echo "$ipad 0";

in order to include the zero after the IP address.

change it to:

Code:

echo $ipad . " 0";

Quote:

echo "$ipad 0" >/etc/postfix/ipfile;

well, php is not bash

you'll need s. th. like the following:

Code:

$filename = 'ipfile';
$ipad = $ipad . " 0";
    if (!$handle = fopen($filename, "r")) { 
         print "can't open file";
         exit;
    }
    if (!fwrite($handle, $ipad)) {
        print "can't write to file";
        exit;
    }    
print "done, wrote $ipad";

    fclose($handle);

  else {
    print "file is not writable";
}

graemef · 07-24-2007, 02:12 AM

A few quick comments...
echo "$ipad 0"; is correct.

If you are using fopen() then you will want the mode to be w+ (read and write), not just read.

However a quick way would be to uses file_get_contents() and file_put_contents(). Check them out on your help file...

baikonur · 07-24-2007, 04:11 AM

Quote:

A few quick comments...
echo "$ipad 0"; is correct.

If you are using fopen() then you will want the mode to be w+ (read and write), not just read.

However a quick way would be to uses file_get_contents() and file_put_contents(). Check them out on your help file...

oops, my mistake on the fopen mode.
i prefer the concatenation with "." to putting the variables directly inside the string, but you're right, it is correct.

6millionbucks · 07-24-2007, 04:40 PM

Thanks for the replies, but I don't follow. I know very little about programming. This is my first attempt at it.

Maybe I should clarify what I'm trying to achieve.

The php code I mentioned earlier is a web page called ip.php which is accessed by the following URL:

http://mydomain.com/ip.php

The output (which is my current home IP address) is then displayed in the browser window as:

xxx.xxx.xxx.xxx 0

I would like this ip string to also be written to a file in /etc/postfix/ipfile when the webpage is called.

That said, I dont know how or where in my ip.php to put the code you provided.

Could you please clarify how the complete code should look in the ip.php to produce the results I'm looking for. Thanks a million.

6millionbucks · 07-24-2007, 11:48 PM

My problem has been solved. Here is the final php page that will show your clients IP address while at the same time write the output to a file (ie /tmp/ip.txt).

Thanks to all that replied.

<html>
<head>
<title>Get IP</title>
<style type="text/css">
body
{
background-color: white;
font-family: "verdana";
}
P
{
font-size: 10pt;
}
</style>
</head><body>

<table width="90%" border="1" align="center" cellpadding="3" cellspacing="1">
<tr><td height="60" align="center"><p>

<div align="center">Your IP address is:

<?
if(getenv("HTTP_CLIENT_IP")) {
$ipad = getenv("HTTP_CLIENT_IP");
} elseif(getenv("HTTP_X_FORWARDED_FOR")) {
$ipad = getenv("HTTP_X_FORWARDED_FOR");
} else {
$ipad = getenv("REMOTE_ADDR");
}

$ipad = substr($ipad, 0,14);
echo "$ipad";

$filename = '/tmp/ip.txt';
$ipad = $ipad . " 0";

if (is_writable($filename)) {
if (!$handle = fopen($filename, 'w')) {
echo "Cannot open file ($filename)";
exit;
}
if (fwrite($handle, $ipad) === FALSE) {
echo "Cannot write to file ($filename)";
exit;
}
echo " Success, wrote ($ipad) to file ($filename)";
fclose($handle);
} else {
echo "The file $filename is not writable";
}
?>

</div>
</font></p>
</td></tr></table></body></html>

Now to get the ip address into postfix so that I can relay from home or anywhere else I may be. This is actually fun

.