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Old 05-31-2012, 07:50 AM   #1
secondhandman
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php dynamic ip script


I want to create a script that will send an email every time the dynamic ip of my site changes. I have followed the following steps to install php mail options:

apt-get install php-pear
pear install mail
pear install Net_SMTP
pear install Auth_SASL
pear install mail_mime
apt-get install postfix

I have a script that reports the ip address when ever it's ran, but I only want it to send a message when the ip address changes. The code for reporting my public ip address is as follows:

<?php
$to = "me@example.com";
$subject = "Routers ip address";
$body = exec("curl -s http://whatsmyip.net/ |grep -i '<title>' | cut -d : -f$
if (mail($to, $subject, $body)) {
echo("<p>Message successfully sent!</p>");
} else {
echo("<p>Message delivery failed...</p>");
}
?>

I have tried a few thing to get this to work, but no luck. I would like this script to only send a message when the ip address changes if possible:

/* DOES NOT WORK */

<?php
$body = exec("curl -s http://whisismyip.net/ |grep -i '<title>' | cut -d : -f 2 | sed 's!</title>!!'");
$ip = "/home/user/Documents/currentip";
/*currenip is a file with the current ip address in it! */

if ($body != $ip) {
$to = "user@example.com"
$subject = "Public ip address";
$body = exec("curl -s http://whisismyip.net/ |grep -i '<title>' | cut -d : -f 2 | sed 's!</title>!!'");
} else {
echo("<p>Message delivery failed...</p>");
}
?>

This last script doesn't work!! I've tried! Please help, you're my only hope!
edit: also it doesn't send mail!

Last edited by secondhandman; 05-31-2012 at 08:08 PM.
 
Old 05-31-2012, 08:45 AM   #2
pan64
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At least the sed script is incorrect: sed 's!</title>!!' would be better.
Do you have any error messages?
 
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Old 05-31-2012, 12:14 PM   #3
secondhandman
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No errors! It hangs for a short time and returns me to the command line.

That was typo! I'll edit the post.

Thanks for the comment.

Last edited by secondhandman; 05-31-2012 at 12:18 PM.
 
Old 05-31-2012, 01:25 PM   #4
pan64
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$ip = "/home/user/Documents/currentip";
this line means the variable ip will be equal to the filename, not the content of the file. So you need to open the file and read the first line. You also need to check the case when this file was not available. Also, if ip changed you need to save it.
 
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Old 05-31-2012, 02:44 PM   #5
Babertje
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Maybe a betterway is to use only php to fetch your IP
Code:
<?php
// Freegeoip.net csv service
// to me this returns: 86.93.xxx.yyy,NL,Netherlands,07,Noord-Holland,Haarlem,,52.3667,4.65,
$url = 'http://freegeoip.net/csv/';
$data = file_get_contents($url);
// only need first part
$ip_adress = split(",", $data);
echo $ip_adress[0];
?>
 
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Old 05-31-2012, 07:19 PM   #6
secondhandman
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Quote:
Originally Posted by pan64 View Post
$ip = "/home/user/Documents/currentip";
this line means the variable ip will be equal to the filename, not the content of the file. So you need to open the file and read the first line. You also need to check the case when this file was not available. Also, if ip changed you need to save it.
How would I go about doing this? I think I'm having trouble with the if statements?

I'll try out that code Babertje! Thanks.
 
Old 06-01-2012, 02:25 AM   #7
Babertje
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To get the content of that file
Code:
$stored_ip file_get_contents('/home/user/Documents/currentip');
also take a look at the php reference http://www.php.net/manual/en/langref.php this is your most usefull place to look for any php related solutions I guess.
 
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Old 06-08-2012, 12:03 PM   #8
secondhandman
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I still can't get this to work Very new to php and linux. Thanks for your help!

Script still does nothing, just hangs!
 
Old 06-08-2012, 12:14 PM   #9
secondhandman
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can I call on php in a shell script? That might help me make it work!
 
Old 06-08-2012, 12:25 PM   #10
pan64
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yes, you can: http://php.net/manual/en/features.commandline.php
 
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Old 06-08-2012, 01:40 PM   #11
Babertje
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Quote:
Script still does nothing, just hangs!
Open a terminal and type:
Code:
tail -f /var/log/httpd/error_log
Run your script and if your php script doesn't work correctly you can get the concept of what goes wrong.
 
  


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