Creating a 666 file?

tsb · #1 (**permalink**) 02-03-04, 03:52 AM

Hi again.

I've written a script to edit an exsisting file (that is chmoded to 666) and everthing's fine, but what 'thing' (i can't remember the offical name) should i use if i want to view the file, and if it doesn't exsist, create it?

For example:

PHP Code:


			
<?php



$file = "./file.php";

$fs = fopen( $file, "r" ) or die("error when opening the file");



while (!feof($fs)) {

   $contents .= fgets($fs, 1024);

}



fclose($fs);



?>

<html>

<body>

<form action="save.php" method="post">

<input type=hidden name="file" value="<?php echo $file; ?>">

<textarea rows="10" cols="50" name="contents">

<?php echo htmlspecialchars($contents); ?>

</textarea>

</form>

</body>

</html>

That's what i have at the moment, with save.php being:

PHP Code:


			
<?php

$fs = fopen( $_POST["file"], "w" ) or die("error when opening the file info");

fwrite($fs, $_POST["contents"]);

fclose($fs);

?>

That would edit file.php which is an already exsisting file that is chmoded to 666.

Now what would i use in place of r and w to view/write the file but if it doesn't exsist in either case, create it?

Also, is it possible for the file it creates to be automatically chmoded to 666 so i can edit it? That would be quite useful.

Thanks alot

NeverMind · #2 (**permalink**) 02-03-04, 06:54 AM

either using the 'a' (append) flag or 'w' (write) one , if the file wasn't found, PHP will attempt to create it..

and I don't think it's possible to write on a file or even read with 0666 mode! if I recall right this one makes the file forbbiden to view/right .. 0777 is the one that allows editing ...

tsb · #3 (**permalink**) 02-03-04, 07:28 AM

When i use append it doesn't read the files involved, is there one that will do all three? For me 666 works fine, so is it possible for the file it creates to be automatically chmoded to 666 so i can edit it? Thanks

tsb · #4 (**permalink**) 02-04-04, 03:33 AM

For example, with append it allows me to write and create but not read. With read it allows me to read and write but not create. I need something that will do all three really. Anyone?

Also, can, when i create the file, it be automatically chomded to 666?

Thanks

tsb · #5 (**permalink**) 02-04-04, 03:46 AM

Nevermind, i've made it readable by just doing the command twice as follows:

PHP Code:


			
<?php 



$file = "./file.php"; 

$fs = fopen( $file, "a" ) or die("error when opening the file"); 

$fs = fopen( $file, "r" ) or die("error when opening the file"); 



while (!feof($fs)) { 

   $contents .= fgets($fs, 1024); 

} 



fclose($fs); 



?> 

<html> 

<body> 

<form action="save.php" method="post"> 

<input type=hidden name="file" value="<?php echo $file; ?>"> 

<textarea rows="10" cols="50" name="contents"> 

<?php echo htmlspecialchars($contents); ?> 

</textarea> 

</form> 

</body> 

</html>

It works, but would it in the long run? Also, i'm still confused over the matter involving the creation of a file automatically chmoded to 666.

lotrtrotk · #6 (**permalink**) 02-04-04, 11:02 AM

PHP Code:


			
// you can read AND write if you use 'a+' rather than 'a'

$fs = fopen( $file, "a+" ) or die("error when opening the file");

Quote:

and I don't think it's possible to write on a file or even read with 0666 mode! if I recall right this one makes the file forbbiden to view/right .. 0777 is the one that allows editing ...

as I understand it....

1st number is owner's permissions
2nd is the group's permissions
3rd is everyone else's permissions

7 gives read, write & execute
6 gives read & write.... but no execute

tsb · #7 (**permalink**) 02-04-04, 12:47 PM

my server doesn't like a+ (don't ask why), but i got that working anyway...

i understand permissions, but i just want to know if it is possible for a form to chmod somethong to 666, or whatever persmission, when it creayes the file. thanks

tsb · #8 (**permalink**) 02-04-04, 01:26 PM

When i normally use...

PHP Code:


			
<?php

chmod("file.php", 0666);

?>

...in chmod.php, it comes up with...

Quote:

Warning: chmod() [function.chmod]: Operation not permitted in /users/web/blah/web/chmod.php on line 2

Any ideas why it does that, too?

tsb · #9 (**permalink**) 02-08-04, 04:48 PM

Anyone know?

nfzgrld · #10 (**permalink**) 02-08-04, 05:35 PM

Quote:

Originally Posted by tsb

When i normally use...

PHP Code:


			
<?php

chmod("file.php", 0666);

?>

...in chmod.php, it comes up with...

Any ideas why it does that, too?

Remember two things, one, if it's a windows server, that ain't going to work anyway, but there's a real good change that's exactly the error you would get. The other thing to remember is that PHP access the file system on a *nix box as a user. If for some reason that user doesn't have appropriate permissions in the given directory you could get that. Although, PHP created the file, it doesn't take ownership, so this is very possible.

Nicholas Fitzgerald
http://www.axelis.com