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>The Greeter</TITLE
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CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="AEN69"
>The Greeter</A
></H1
><P
>	The greeter is the graphical user interface that is presented
	to the user. The greeter contains a menu at the top, an
	optional face browser, an optional logo and a text entry
	widget.
      </P
><DIV
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><H2
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><A
NAME="AEN72"
>Text entry</A
></H2
><P
>	  The text entry field is used for entering logins, passwords,
	  passphrases etc. <TT
CLASS="FILENAME"
>gdmlogin</TT
> is controlled by the
	  underlying daemon and is basically stateless. The daemon
	  controls the greeter through a simple protocol where it can
	  ask the greeter for a text string with echo turned on or
	  off. Similarly, the daemon can change the label above the
	  text entry widget to correspond to the value the
	  authentication system wants the user to enter.
	</P
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><H2
CLASS="SECT2"
><A
NAME="AEN76"
>The Menu</A
></H2
><P
>	  The menu bar in the top of the greeter enables the user to
	  select the requested session type/desktop environment,
	  select an appropriate locale/language and optionally
	  shutdown/reboot the machine. The greeter window can also be
	  iconified to make room for other applications on the login
	  screen.
	</P
></DIV
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><H2
CLASS="SECT2"
><A
NAME="AEN79"
>The face browser</A
></H2
><P
>	  The greeter provides a face browser containing icons for all
	  the users on a system. The icons can be installed globally
	  by the sysadmin or in the users' home directories.
	</P
><P
>	  The face browser makes a few assumptions about your
	  environment. First of all, the greeter runs under a
	  dedicated userid, and therefore any face icons located in
	  user directories must be readable to the gdm user. I.e. all
	  home- and <TT
CLASS="FILENAME"
>~/.gnome</TT
> directories must be
	  made readable and executable to the ``other'' group on the
	  system.
	</P
><P
>	  Similarly, face icons placed in the global face directory
	  must be readable to the gdm user.
	</P
><P
>	  Please note that loading and scaling face icons located in
	  user home directories can be a very time consuming task.
	  Especially on large systems or systems running NIS. The
	  browser feature is only intended for systems with relatively
	  few users.
	</P
><P
>	  To filter out unwanted user names in the browser, an exclude
	  option is implemented. The greeter will automatically ignore
	  usernames listed in the <TT
CLASS="FILENAME"
>Exclude</TT
> statement in the
	  config file.
	</P
><P
>	  When the browser is turned on, valid usernames on the
	  machine are inherently exposed to a potential intruder. If
	  your system is connected directly to the Internet, this
	  might be a bad idea.
	</P
></DIV
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><H2
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><A
NAME="AEN89"
>The Logo</A
></H2
><P
>	  The greeter can optionally display a logo in the login
	  window. The image must be in a format readable to the Imlib
	  library (GIF, JPG, PNG, TIFF, XPM and possibly others), and
	  it must be readable to the gdm user. See the <TT
CLASS="FILENAME"
>Logo</TT
> option in the reference section below for detauls.
	</P
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