Added three additional mail_smtp.. parameters.
- mail_smtpdebug - enable debug messages to analyse SMTP problems.
- mail_smtptimeout - set SMTP timeout which is set to 10s by
default and this is sometimes to short especially if a malware/
spam scanner is used.
- mail_smtpsecure - force secure SMTP connections.
This is necessary to enable the desktop sync client to react properly.
Currently the SabreDAV plugin OC_Connector_Sabre_MaintenancePlugin is not executed because this error page is returned before the SabreDAV code is executed
There was no "isAdminUser()" function which returned bool. This is
irritiating as there were a loooooooot of places in the code which
checked this itself with `OC_Group::inGroup($uid, 'admin)` - why not
use a function for this?
(Especially if you consider that we might change the group name in the
future, which would lead to problems then)
Additionally, @Raydiation needed such a method for his AppFramework :)
isSubDirectory() checks if a specified $sub is a subdirectory of the
$parent, this is needed to prevent file inclusions.
Actually, the current code is more kind of a "hack" which I always
struggle over if browsing through source. So this should be a much
better implementation.
The implementation is really straightforward:
- [realpath()](http://php.net/manual/function.realpath.php) expands all
symbolic links and resolves references to '/./', '/../' and extra '/'
characters in the input path and return the canonicalized absolute
pathname.
- [strpos()](php.net/manual/function.strpos.php) returns FALSE if the
substring wasn't found.
Since this is an absolutely critical piece of code, I'd like to ensure
that this is absolutely safe!