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Re: complex characters in UID attribute
Keutel, Jochen (mlists) wrote:
> the ":" is a special character for Unix. (E.g. it's the column
> delimiter in /etc/passwd and friends.) So Unix forbids
> the usage of ":" in user names.
> POSIX defines
> To be portable across systems conforming to IEEE Std 1003.1-2001, the
> value is composed of characters from the portable filename character set.
> This portable character set is defined as
> The set of characters from which portable filenames are constructed.
> A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
> a b c d e f g h i j k l m n o p q r s t u v w x y z
> 0 1 2 3 4 5 6 7 8 9 . _ -
> The last three characters are the period, underscore, and hyphen
> characters, respectively.
> So LDAP allows ":" in uid (because it has DirectoryString syntax) but
> the application (Unix/POSIX) forbids it.
Additionally if using SSH logins one should stick to lower-case chars.