php scripts and tripple slashes

Trying to find info about this, but searching for '///' or for 'tripple
slash' doesn't provide relevant answers. Can anyone please point me in
the right direction?
>
A simple script, called debug.php, shows some variables. I can call
this script using http://server/debug/show.php or using
http://server/debug/show
>
Also I can add more to the URL, and the script is still called. So far
so good.
>
>
_SERVER["REQUEST_URI"]=/debug/show/a/b/c
_SERVER["SCRIPT_NAME"]=/debug/show.php
>
_SERVER["REQUEST_URI"]=/debug/show//a/b/c
_SERVER["SCRIPT_NAME"]=/debug/show.php
>
The problem starts when adding three or more slashes:
>
_SERVER["REQUEST_URI"]=/debug/show///a/b/c
_SERVER["SCRIPT_NAME"]=/debug/show/show.php
>
See how script_name suddenly has an extra '/show' in it?
>
This doesn't happen when I use the full script name:
>
_SERVER["REQUEST_URI"]=/debug/show.php///a/b/c
_SERVER["SCRIPT_NAME"]=/debug/show.php/
>
>
Is this a bug, or is this expected behaviour?
>
>
I also see a problem with PHP_SELF on one machine but not on another:
>
_SERVER["REQUEST_URI"]=/debug/show.php
_SERVER["PHP_SELF"]=/debug/show.php
>
_SERVER["REQUEST_URI"]=/debug/show.php/
_SERVER["PHP_SELF"]=/
>
Please point me into the right direction, currently I have no idea if I
have to look at apache's configuration, PHP, or if this is expected
behaviour (and, if so, why).
>
TIA
>

I bet you are using mod_rewrite for apache.
Have a look at the rewrite rules and conditions in your apache config.
Post it here if you are in doubt. Or better here: alt.apache.configuration

>
mijn naam schreef:>
Hi Stranger,
>
And what URL are you feeding excactly that gives the above result?

And secondly: What is it excactly you are trying to achieve?
Do you have an actual problem or is this just research?

PS: Please 'mijn naam', use a (real) name, that makes conversations in
here a bit more pleasant. ;-)

"Erwin Moller"
<Since_humans_read_this_I_am_spammed_too_much@spam yourself.comschreef
in bericht news:48e0d358$0$182$e4fe514c@news.xs4all.nl...>

http://hostname/debug/one/two///three/four
>
in other words: http://{$_SERVER["SERVER_NAME"]}{$_SERVER["REQUEST_URI"]}

>
>>
I'm writing a script which is going to be used to find files in a
directory structure. That script looks like a subdirectory in the normal
tree.
>
E.g. http://servername/content/a/b/c/d will look at
/home/user/private_html/a/b/c/d
>
While testing my script with various different problems ('never trust
user input') I found the problem I'm trying to tackle.
>
I was using _SERVER["SCRIPT_NAME"] but obviously I run into trouble if I
can't rely on its contents.
>
The only workaround I've found so far is to
redirect(ereg_replace('///*','/',$_SERVER["REQUEST_URI"])) in case I
find two slashes in a row in request_uri. Not a nice solution but it
seems to do the job.

>
>>
Just call me 'Mijn'. No problem.

>
OK, that makes sense then for $_SERVER["REQUEST_URI"].
>
I don't see how/why PHP fills $_SERVER["PHP_SELF"] with:
/debug/one/two/debug.php/one/two/three/four
for that URL if you don't play with mod_rewrite.

Your url:
http://hostname/debug/one/two///three/four
DOESN'T name any php script, so HOW is this fed to a PHP script without
mod_rewrite???

Are you sure you are telling the whole story?

What about simply dismissing a request that has more than one / in the
URL?
That must be an invalid request, since (I expect) you deliver the
directorylinks yourself, and thus correctly formatted.

"Erwin Moller"
<Since_humans_read_this_I_am_spammed_too_much@spam yourself.comschreef
in bericht news:48e0ebcb$0$187$e4fe514c@news.xs4all.nl...
>>
I'm sure I disabled mod_rewrite. At the server restart, apache
complained "Invalid command 'RewriteLog', perhaps mis-spelled or defined
by a module not included in the server configuration" ( I forgot to
remove one such line at first).
>
>>
the php script is debug.php ...
>>
... and apache is setup with options MultiViews. I didn't hide that on
purpose.
>>
That would also be an option. However: nobody's perfect, a mistake is
easily made e.g. $ptr="./{$dir}/{$path}"; what if path starts with a
slash, dir starts or ends with a slash, dir is empty, and so on. Apache
couldn't care less and will happily serve .///something/different.html

>
>

mijn naam wrote:>
Note that two slashes, as in http:// is part of the protocol.
>
If I serve http://some_domain.com//some_path, this will look like
http://some_domain.com/http://somepath, or something like that..
>
I've stayed out of this thread because I'm hazy on this, but you should
be aware that serving two slashes will be interpreted differently than
what you want, it is not directory separator.

"Erwin Moller"
<Since_humans_read_this_I_am_spammed_too_much@spam yourself.comschreef
in bericht news:48e0ebcb$0$187$e4fe514c@news.xs4all.nl...
>>
I'm sure I disabled mod_rewrite. At the server restart, apache
complained "Invalid command 'RewriteLog', perhaps mis-spelled or defined
by a module not included in the server configuration" ( I forgot to
remove one such line at first).
>
>>
the php script is debug.php ...
>>
... and apache is setup with options MultiViews. I didn't hide that on
purpose.

>>
That would also be an option. However: nobody's perfect, a mistake is
easily made e.g. $ptr="./{$dir}/{$path}"; what if path starts with a
slash, dir starts or ends with a slash, dir is empty, and so on. Apache
couldn't care less and will happily serve .///something/different.html
>
>