writing to middle of file

ryza_

Hello,

i hope someone can help me, im trying to write to teh middle of a file because the contents at the end and at the start cant be changed.. here is what my php code looks like...

/* ban data starts here
if ($placeban == "yes"){

$ban = 'deny from $REMOTE_ADDR
</LIMIT>';

$htaccess = fopen ("/var/www/html/.htaccess", "r+");
echo ereg_replace ("</LIMIT>", "$ban", $htaccess);
$fp = fwrite($htaccess,chr(13));
$fp = fwrite($htaccess,"$ban,");
fclose($htaccess);
echo "- Cannot Proccess";
exit;
}
ban data ends here */

ok that probably looks completely funny to you, "which wouldnt surprise me because it dosnt work" 🙂

basically i want to add an IP into the htaccess file.. here is what the htaccess file looks like before it has been written to.

<LIMIT GET PUT POST>
order allow,deny
allow from all
deny from 111.111.111.111
</LIMIT>

ok, so 111.111.111.111 represents an IP address, so thats where i add there IP address to ban them. however, the IP must be added before "</LIMIT>
and after "allow from all"

so can anyone help me out with an example on how to do this?

Kind Regards
ryza

Anon

What you're going to have to do is:

Read the entire file.
Write the intial part of the file back out.
Write the new middle section back out.
Write the final part of the file back out.

I recommend you write to a new temporary file. Check it worked. Then delete the original and rename the temporary. If you do it this way you have the original to fall back on if the writing went wrong; you can also read from the original file and write to the temporary file concurrently - saves you having to read the entire file into memory (but an .htaccess file shouldn't be so big that that becomes a problem).

ryza_

can you show me an example of how to do all these things ?

🙂

Anon

If you use file() to read the file in, then it shouldn't be too hard to find the array entry that contains the </LIMIT> tag - so we say that everything before it is "initial part" and it and everything after it is "final part".

Similar thinkinging if you look for the "allow from all" line.

Better: read through each array entry until you find the <LIMIT> tag. When you spot that, start looking for "allow from all". everything you've read up to that point will be "initial part" - write it out. Then write the new banned IP. Then write the rest of the array to finish the file.

ryza_

great man,

thanks for your 'such precise php code example',

now i will go read the entire manual at php.net "thanks for NOT saving me 4 hours"

Kind Regards
ryza

Anon

Apologies for not devoting all my efforts to you.

$file=file('.htaccess');
$temp=fopen('temp.htaccess','w');
$found_limit=false;
foreach($file as $line)
{
frwite($temp,$line);
if($line=='allow from all')
{
fwrite($temp,$bannedIP."\n");
}
}
fclose($temp);
unlink('.htacces');
rename('temp.htaccess','.htaccess');

You can spend the rest of the four hours getting that to work for your particular situation.

Anon

Gee, did you guess I might have been writing at the same time as you?

Ah well, serves me right for not realising I was supposed to do other people's thinking for them...

ryza_

lol.

Grumbler.
thanks.

regards
ryza

fitzbean

none of us own you anything .. half the questions people ask on here could be answered themselves. And then you chew him out for now writing all the code for you? lol, lamer.

ryza_

i didnt chew him out. and you dont own this site so dont act like some big helper admin. if you dont like it or dont have anything half decent to say then piss off.

you are the lamer.

Anon

Hear that? Sounds like someone doesn't want our help.

So why ask?