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skimpydog

php - editing text files on a server

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Joined: 2007/6/10

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I cannot stress enough that if you use this script to make sure the script in in a secure area, with preferably limited access rights from the outside world! - This should be encrypted traffic, and secured with user authentication, and session handling. I take no responsibility if your server get's hacked because you do not know what you are doing.

This is a very basic script that should be inserted with a header, and footer to handle cookie sessions and user authentication at a minimum! Preferably even with SSL so if your traffic is sniffed, still only you know of the file.

The scope of this script is to be able to view, and edit a flat text file, while keeping the structure of the file intact by means of <textarea>.

The file you want to edit needs to be editable by the webuser - This is the user which is running the web server daemon, normally on apache, this is the user "nobody".
-- This is considered insecure!

Normally the file(s) you want to edit must contain the permissions of "666", such as:

chmod 666 /path/to/somefile.txt

This does however depend on the server configuration.
This script works with "regester_globals = off" in your php.ini.

Then create the php page with the following:

<align=left>Edit that file!!</align><br><br>
<?php
$loadcontent = "/path/to/somefile.txt";
if(@$_POST['save_file']) {
$savecontent = stripslashes($_POST['savecontent']);
$fp = @fopen($loadcontent, "w") or die ("Cannot open file for reading!");
if ($fp) {
fwrite($fp, $savecontent);
fclose($fp) or die ("cannot Close File because it was never opened!");
print '<a href='.$_SERVER[PHP_SELF].'>Refresh</a>';
print "<html><head><META http-equiv=\"refresh\" content=\"0;URL=$_SERVER[PHP_SELF]\"></head><body>";
}
}
$fp = @fopen($loadcontent, "r");
 $loadcontent = @fread($fp, filesize($loadcontent)) or die ("Cannot calculate file size for reading because I cannot read the file!!");
$lines = explode("\n", $loadcontent);
$count = count($lines);
$loadcontent = htmlspecialchars($loadcontent);
fclose($fp);
for ($a = 1; $a < $count+1; $a++) {
$lines .= "$a\n";
}
?>
<form method=post action="<?php $_SERVER['PHP_SELF']?>">
<input type="submit" name="save_file" value="Save">
<table width="100%" valign="top" border="0" cellspacing="1" cellpadding="1">
<tr>
<td width="3%" align="right" valign="top"><pre style="text-align: right; padding: 4px; overflow: auto; border: 0px groove; font-size: 12px" name="lines" cols="4" rows="<?=$count
+3;?>"><?php $line;?></pre></td>
<td width="97%" align="left" valign="top"><textarea style="text-align: left; padding: 0px; overflow: auto; border: 3px groove; font-size: 12px" name="savecontent" cols="150" row
s="<?php $count;?>" wrap="OFF"><?php echo $loadcontent; ?></textarea></td>
</tr>
</table>
<br>
<input type="submit" name="save_file" value="Save">
</form>

Posted on: 2008/12/20 19:36