Hi!

First I know that there are a lot of different bugs concerning open_basedir, and I read recent ones, about 20. But this is all strange.

Second: My system is a Sparc U10
        Solaris 8 based.
        Apache 1.3.27 and PHP4.3.1
        This is my test system for out Webmailservice.

ATM there is a Horde-1.2.8/imp2.2.8 installed which is a identical copy from our working production system. This is in docroot of the apache. (Filesystem location: /opt/horde/htdocs/horde/imp). php.ini hase a include_path to /opt/horde/phplib, and the auto_prepend_file statement for phplib. open_basedir is set to 
".:/opt/php4/lib/php:/opt/horde2test:/var/tmp/ldapcache:/opt/horde:/var/webmail-attachments"


We are in the transition to Horde2.2.1/imp3.1.
I installed the new system into /opt/horde2test and
made an alias in apache's httpd.conf to https://<server>/imp3test and set via php_admin_value the prepend file to none and the include-path to php4.3.1/pear-directory. This is all still working fine.

But we have a small and dirty hack within the old horde/imp combo which is needed to get the userid from a ldapserver. The users have to use their mail-alias to login, but for the connection to the imapserver the userid is required. Our piece of code does only some ldap-queries and then tries to store the result in a file to speed up next login.

and the code to write these small files is this:

$pfad="/tmp/ldapcache/".$buchstabe1."/".$buchstabe2;
$filename=$pfad."/".$imp['user'];
$command="mkdir -m 0700 -p ".$pfad;
exec($command);       
$fd=fopen($filename,"w");
fwrite($fd,$imp['unipopid']); fwrite($fd,"\n");
fclose($fd);          


In Horde1/imp2 there is no error the files are created.
In Horde2/imp3 I always get:

[19-Feb-2003 21:06:37] PHP Warning:fopen()]: open_basedir restriction in effect. File(/tmp/ldapcache/j/f/joerg.dieter.friedrich) is not within the allowed path(s): (.) in /opt/horde2test/htdocs/horde/imp/lib/IMP.php on line 166
[19-Feb-2003 21:06:37] PHP Warning:  fopen(/tmp/ldapcache/j/f/joerg.dieter.friedrich): failed to create stream: Not owner in /opt/horde2test/htdocs/horde/imp/lib/IMP.php on line 166
[19-Feb-2003 21:06:37] PHP Warning:  fwrite(): supplied argument is not a valid stream resource in /opt/horde2test/htdocs/horde/imp/lib/IMP.php on line 167
[19-Feb-2003 21:06:37] PHP Warning:  fwrite(): supplied argument is not a valid stream resource in /opt/horde2test/htdocs/horde/imp/lib/IMP.php on line 167
[19-Feb-2003 21:06:37] PHP Warning:  fclose(): supplied argument is not a valid stream resource in /opt/horde2test/htdocs/horde/imp/lib/IMP.php on line 168


If I use the older horde/imp on the _same_ machine with the _same_ apache/php there is no problem the file is created.

And to be more funny: /tmp is a symlink to /var/tmp
If i change the line
$pfad="/tmp/ldapcache/".$buchstabe1."/".$buchstabe2;
to
$pfad="/var/tmp/ldapcache/".$buchstabe1."/".$buchstabe2;

everything works as expected.

And now I do not know what to do?

What can cause such strange effects?
To be honest I hesitate to go productional with such a system if I cannot be sure that its working as it should.

Yours Joerg