Bootlock
                                   ~~~~~~~~


WHAT IS IT:
~~~~~~~~~~~
    Programm to prevent your Amiga being used by unauthorised persons and
    fakes a sun bootmonitor.

REQUIREMENTS:
~~~~~~~~~~~~~
    OS 2.04. 
    OS 2.1 or newer and graphics card or AGA (for higher resolutions re-
    commended.
	
DISTRIBUTION:
~~~~~~~~~~~~~
    This product may be freely distributed under the following restrictions:

    1.  The complete contents of the original archive must remain intact.
    2.  The original material may in no way be modified.
    3.  This product may not be distributed for profit.  A nominal copying
        fee is authorized (for cost of materials and shipping and handling
        comparable to that charged by Fred Fish.)
    4.  Commercial distribution of this product without written permission
        from the author is forbidden.


USE OF THIS PRODUCT:
~~~~~~~~~~~~~~~~~~~~
    This product may be used under the following restrictions:

    1.  Non-commercial use of this product is free of charge.
    2.  Commercial use of this product without written permission from the
        author is forbidden.
    3.  Honorable mention of the author and product must be included in the
        client documentation (non-commercial and licensed-commercial.)
    4.  This product may not be used for malicious intent!


DISCLAIMER:
~~~~~~~~~~~
    This product is provided without any warranty, express or implied.  The
    user of this product assumes full responsibility for any damage resulting
    from the use and/or misuse of this product.


CONTENTS:
~~~~~~~~~

    BL_Version.(rev|h)      Generated by Froh's MyBump
    booticon.h              Rudi's icon, with special treatment by me
    Read.me                 This file
    bootlock                The executable
    bootlock.info           Info file for Bootlock, with default tooltypes
    bootlock.(c|h)          Source files
    fonts                   Directory containing the needed sunfont, which must 
                            be copied to your FONTS: drawer. Not my work, i got
                            it from some Freeware distribution.
    SMakefile               Makefile for SAS Smake

USAGE:
~~~~~~
    From Shell:
    Bootlock PWD=PASSWORD/K/A,SMR=SCREENMODEREQ/S,DIS=DISPLAY/K
    PASSWORD       `secret` word that will end Bootlock and thus return control
                   over the computer to the user. No restriction in characters,
                   but it must be at least four letters and at most twelve 
                   letters long. No default value, Bootlock will not start if 
                   this parameter is omitted.
    SCREENMODEREQ  switch to make an asl-screenmode-requester appear (only V38
                   and up). You can select the screenmode in which the lock-
                   screen will open. As the selected mode is not saved, this
                   option is more useful for tests to choose the best screenmode
                   available. Default is off. Ok starts Bootlock in the current
                   screenmode, Cancel quits Bootlock.
    DISPLAY        name of the desired screenmode as taken from the display 
                   database, e.g. "SUPER72:Super-High Res Laced". 
                   Default is HIRESLACE.

    From Workbench:
    The tooltypes supported by Bootlock are the same as the shell parameters, 
    execpt that no abrevations are possible. The supplied .info file contains
    several screenmodes, the screenmoderequester switch and one default 
    password: joshua (don't ask why ;-)
	
	When started, Bootlock opens a two color screen (black and white) and 
    displays a slightly	modified picture of a Sun workstation in it's boot-
    monitor. It offers three commands:
    (b)oot, (c)ontinue and (n)ew command mode. While continue does nothing but
    lead to a simulated reboot, boot and new prompt for the "Prom Password", 
    the password specified through the options. A wrong passwords causes a 
    pause of ten seconds, every third wrong password will cause a longer 
    simulated reboot. Esc-c will cause the screen to be redrawn, Del and
    backspace are not supported.
    As Bootlock uses a 16 pixel font (sunfont), it looks better the bigger the
    resoultion is. I'm using it with SUPER72, which gives about 900*600I and
    looks acceptable, but it would be best on a graphic card like Picasso or 
    Retina. NTSC or even worse PAL interlaced or non-interlaced are, well,
    let's say `less preferable` ;-}
    
How it works:
~~~~~~~~~~~~~
    The locking is done by two ways. First i patched only ScreenTo(Back|Front),
	but that proved to be not suffiecient as Amiga-M/N apparently uses another
    mechanism. Now Bootlock is a commodity that runs at highest priority,
    discards all input events that have Qualifiers like Amiga, Alt or Ctrl.
    Also, it reacts to INACTIVEWINDOW by reactivating itself and popping the
    screen back to front.
    If you are using Bootlock and find any workaround (leaks in Bootlock),
    please notify me, so i can search for ways of improvement.
    
Known problems:
~~~~~~~~~~~~~~~
    Screen blankers. I'm using FracBlank, ASwarmII, fBlanker and Blanker (C=),
    but the only one to make problems is FracBlank. It's screen opens behind
    Bootlock's screen and therefore blanks nothing.
    If Bootlock suddenly fails with newer versions of the OS, please drop me
    some lines.
    
Credits:
~~~~~~~~
    Rudolf König            for the original program
    Hakan Tandogan
    Frohwalt Egerer         for beta-testing
    Henning Schmiedehausen

CONTACTING THE AUTHOR:
~~~~~~~~~~~~~~~~~~~~~~
I can be reached by the following means:

    Internet:   bdraschk@cip.informatik.uni-erlangen.de
    IRC:        Arthur
    UUCP:       arthur@thera.(adsp|nbg).sub.org
    Snail:      Bernd Raschke
                Hartmannstraße 129 / Zi. 426
                D-91058 Erlangen