使用PHP代码编辑我的centos 6网络配置文件但在网络重启后我收到错误

Question

I am using a simple file operation on the PHP in order to edit the config file for network interface on CentOS 6.7(/etc/sysconfig/network-scripts/ifcfg-eth0 ), after change in any value and save into the config file and try to restart the network interface i get this error:

does not seem to be present, delaying initialization.
[FAILED]

my PHP code is this:

<?php

// configuration
$file = '/etc/sysconfig/network-scripts/ifcfg-eth0';

// check if form has been submitted
if (isset($_POST['text']))
{
// save the text contents
file_put_contents($file, $_POST['text']);

// redirect to form again
header('Location: network.php');
exit();
}

// read the textfile
$text = file_get_contents($file);

?>
<!-- HTML form -->
<form action="" method="post">
<textarea style="width:50%; height:50%;" name="text"><?php echo htmlspecialchars($text) ?></textarea>
<input type="submit" />
<input type="reset" />
</form>

i need manually called the network script by command setup and do a modification in the device setting and save then i will be able to restart the network interface. appreciate if anyone help me why this issue happen while if i open the config file and edit it manually it wouldn't cause this issue.

Answer 1

It's most likely that the user name the server runs as (by default apache on most Red Hat-based distributions) doesn't have permission to write to/etc/sysconfig/network-scripts/ifcfg-eth0.

You should check the return values of:

file_put_contents($file, $_POST['text']);

From http://php.net/manual/en/function.file-put-contents.php

This function returns the number of bytes that were written to the file, or FALSE on failure.

---

I presume this script will only be run by your or trusted colleagues given that there's no validation of the user input. Indentation would also make the PHP code more readable.