Parsing .htaccess file

[Stefan Bellon]

Hi all!

I want to parse the contents of an .htaccess file from within PHP. The
contents of the .htaccess file looks like this:

<Files foobar.tar.gz>
AuthType Basic
AuthUserFile /foobar
AuthName "Foobar"
<Limit GET>
Require user FOOBAR
</Limit>
</Files>

And so on. When I read in that file with the following code:

$fd = fopen(".htacces s", 'rb');
while (!feof($fd)) {
$line = fgets($fd, 1024);
echo "|".$line."|\n" ;
}
fclose($fd);

Then I get empty lines for those lines containing <Files ...>,
<Limit ...> and so on. How can I get at those lines as well?

What I need to know is basically the information "which user can access
which file?"

--
Stefan Bellon

[Erwin Moller]

Re: Parsing .htaccess file

Stefan Bellon wrote:
[color=blue]
> Hi all!
>
> I want to parse the contents of an .htaccess file from within PHP. The
> contents of the .htaccess file looks like this:
>
> <Files foobar.tar.gz>
> AuthType Basic
> AuthUserFile /foobar
> AuthName "Foobar"
> <Limit GET>
> Require user FOOBAR
> </Limit>
> </Files>
>
> And so on. When I read in that file with the following code:
>
> $fd = fopen(".htacces s", 'rb');
> while (!feof($fd)) {
> $line = fgets($fd, 1024);
> echo "|".$line."|\n" ;
> }
> fclose($fd);
>
> Then I get empty lines for those lines containing <Files ...>,
> <Limit ...> and so on. How can I get at those lines as well?
>
> What I need to know is basically the information "which user can access
> which file?"
>[/color]


Hi,

Maybe you are in htmlcontext?

What does this produce?

$myLines = file('path/to/.htaccess');
foreach($myLine s as $oneLine){
echo htmlentities($o neLine)."<br>";
}

Does that show correctly?

Regards,
Erwin Moller

[Stefan Bellon]

Re: Parsing .htaccess file

Erwin Moller wrote:
[color=blue]
> $myLines = file('path/to/.htaccess');
> foreach($myLine s as $oneLine){
> echo htmlentities($o neLine)."<br>";
> }
>
> Does that show correctly?[/color]

This does print the content correctly, yes, thanks a lot. However, if I
want to parse (and replace) the content using ereg_replace I get funny
results as the bracket < seems to be represented as &lt; internally.
So, when trying to get at the filename, I need to do something like

ereg_replace("& lt;Files (.*)&gt;", "\\1", htmlentities($l ine))

Wow. Is this the easiest way of filtering out the information? All I
want to do is build a list of "who may access which file according to
the information inside the .htaccess file".

--
Stefan Bellon

[Stefan Bellon]

Re: Parsing .htaccess file

Stefan Bellon wrote:
[color=blue]
> What I need to know is basically the information "which user can
> access which file?"[/color]

In the meantime I've come up with a solution. Just in case somebody
else needs something similar, here is my PHP code:

<?php

## Read in the .htgroups file and build array of groups of array of
## users.
$tmp=file('.htg roups');
$groups=array() ;
foreach($tmp as $line)
{
$exploded=explo de(": ", $line);
$groups[$exploded[0]] = explode(" ", $exploded[1]);
}

## Read in the .htaccess file looking for group accesses for files.
$tmp=file('.hta ccess');
$file="";
$files=array();
foreach($tmp as $line)
{
## htmlentities necessary in order to get at HTML-like tags at all,
## but then they're escaped, so &lt; and &gt; are necessary.
if (ereg("&lt;File s .*&gt;", htmlentities($l ine)))
{
## We have a file section starting, so remember the file name.
$file=trim(ereg _replace("&lt;F iles (.*)&gt;", "\\1",
htmlentities($l ine)));
}
elseif (($file != "") &&
($file != "index.php" ) &&
(ereg("AuthName \".*\"", $line)))
{
## Get the authentication name of the file.
$files[$file]=array
('Name' => ereg_replace("A uthName \"(.*)\"", "\\1", $line),
'access' => 0);
}
elseif (($file != "") &&
($file != "index.php" ) &&
(ereg("Require user .*", $line)))
{
## We have a user permission.
$user=trim(ereg _replace("Requi re user (.*)", "\\1", $line));

if ($user == $_SERVER['REMOTE_USER'])
{
$files[$file]['access']=1;
}
}
elseif (($file != "") &&
($file != "index.php" ) &&
(ereg("Require group .*", $line)))
{
## We have a group permission, so get the group.
$group=trim(ere g_replace("Requ ire group (.*)", "\\1", $line));

## Look in the users of the group whether REMOTE_USER is listed.
foreach($groups[$group] as $user)
{
if ($user == $_SERVER['REMOTE_USER'])
{
$files[$file]['access']=1;
break;
}
}
}
}

## Do whatever HTML stuff you want here, and later on:

## Now loop through the file permission data and built HTML code.
foreach($files as $file => $data)
{
if (($data['access'] == 1) && (file_exists($f ile)))
{
## Do something with $file and/or data['Name']
}
}

## Rest of HTML stuff.

?>

--
Stefan Bellon

[Erwin Moller]

Re: Parsing .htaccess file

Stefan Bellon wrote:
[color=blue]
> Erwin Moller wrote:
>[color=green]
>> $myLines = file('path/to/.htaccess');
>> foreach($myLine s as $oneLine){
>> echo htmlentities($o neLine)."<br>";
>> }
>>
>> Does that show correctly?[/color]
>
> This does print the content correctly, yes, thanks a lot. However, if I
> want to parse (and replace) the content using ereg_replace I get funny
> results as the bracket < seems to be represented as &lt; internally.
> So, when trying to get at the filename, I need to do something like
>
> ereg_replace("& lt;Files (.*)&gt;", "\\1", htmlentities($l ine))
>
> Wow. Is this the easiest way of filtering out the information? All I
> want to do is build a list of "who may access which file according to
> the information inside the .htaccess file".
>[/color]

Hi,

No, it is not the easiest way, but it shows the output right to the browser.
If you use < and > in your output, your webbrowser will interpret that as a
tag.
adding htmlentities replaces the <> (and other problematic characters) by
their HTMLequivalents .

You can do what you were trying to do, but I cannot help you with the
regexp, because I suck at regexpr.
So my response was just a warning to use htmlentities whenever you are
feeding information to a browser, because of the unexpected result you get
when you do not.
Of course: Looking in the source (view source) of the page could help too.

Regards,
Erwin