146 lines
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146 lines
5.9 KiB
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<META name="author" lang="en" content="Michiel Broek">
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<META name="copyright" lang="en" content="Copyright Michiel Broek">
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<META name="description" lang="en" content="MBSE BBS Manual">
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<META name="keywords" lang="en" content="MBSE BBS, MBSE, BBS, manual, fido, fidonet, gateway, tosser, mail, tic, mailer">
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<TITLE>Running DOS doors on MBSE BBS.</TITLE>
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<div align='right'><h5>Last update 09-Aug-2004</h5></div>
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<div align='center'><H1>MBSE BBS - Running DOS doors.</H1></div>
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<h3>Introduction</h3>
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<p>
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Running DOS doors is possible on systems that can run
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<a href="http://www.dosemu.org">dosemu</a>. The latest versions of dosemu don't
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need to be started suid root or started using sudo, it can run as the user that
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is logged in the bbs. Since that is possible, a new location for the virtual C:
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drive is now being used withing the $MBSE_ROOT file structure. This virtual C:
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drive is owned by the group bbs. The basic ideas how doors should be run written
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by Redy Rodriguez are still valid, but some scripts are changed and some dosemu
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files must be copied into the mbse directory tree.
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<p> <p>
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<h3>Installing dosemu</h3>
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<p>
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Some distributions have good dosemu packages, others don't. You need a dosemu
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that can be used in a systemwide multiuser setup. The bad packages want to have
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the dos drive in each users home directory, this is not what we want for doors.
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If you don't have a good dosemu you have to compile your own. This is not too
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complicated. First download the source from <a
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href="http://www.dosemu.org">dosemu</a>. You don't need the freedos-bin source
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if you are going to use ms-dos or pc-dos.
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Unpack the source in some directory of your choice and compile the sources:<br>
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<pre>
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mbse@seaport$ tar xfvz dosemu-1.2.2.tgz
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mbse@seaport$ cd dosemu-1.2.2
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mbse@seaport:~/dosemu-1.2.2$ ./configure --prefix=/usr --sysconfdir=/etc/dosemu --with-x
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mbse@seaport:~/dosemu-1.2.2$ make
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</pre>
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Note that the <code>--with-x</code> is not needed for running doors, but it
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might be handy that you can use dosemu as user mbse in X to do maintenance on
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your doors.<br>
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Then as root do:<br>
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<pre>
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root@seaport:~/dosemu-1.2.2# make install
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</pre>
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<p> <p>
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<h3>Setup dosemu in mbse</h3>
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<p>
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First copy <code>/etc/dosemu/dosemu.conf</code> into <code>~/etc/dosmeu</code>.
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Then edit <code>~/etc/dosemu/dosemu.conf</code> so that we have a version for
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mbse users. Set the following settings in that file:<br>
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<pre>
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$_hdimage = "/opt/mbse/var/dosemu/c"
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$_floppy_a = ""
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$_xms = (1024)
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$_ems = (2048)
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$_dpmi = (0x1000)
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$_layout = "us"
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</pre>
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Next we need to setup the C: drive. Do this as user mbse. First type <code>umask
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007</code>, this sets the create mode for directories to 0770 and files to 0660
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so that we create all files and directories read/write for all bbs users. This
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is very important! Type the following commands:
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<pre>
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mbse@seaport:~$ umask 007
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mbse@seaport:~$ cd var/dosemu/c
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mbse@seaport:~/var/dosemu/c$ mkdir dos dosemu temp util doors
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</pre>
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Now we must install dos. If you use ms-dos then in <code>~/var/dosemu/c</code>
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copy the ms-dos files <code>command.com</code>, <code>io.sys</code> and
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<code>msdos.sys</code>. In <code>~/var/dosemu/c/dos</code> copy all ms-dos
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commands. Next install the dosemu utilities, copy these from
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<code>/usr/share/dosemu/freedos/dosemu</code> to
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<code>~/var/dosemu/c/dosemu</code>. Now there is a empty
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<code>~/var/dosemu/c/util</code>, copy some utilities here such as your
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favourite dos editor, zip and unzip etc.<br>
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Next we must create <code>config.sys</code> and <code>autoexec.bat</code>. These
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files must be dos crlf formatted. You can do that with the joe editor, for
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example <code>joe -crlf config.sys</code>. Examples:<br>
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<code>config.sys</code><br>
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<pre>
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BUFFERS = 20
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DEVICE=C:\DOS\SETVER.EXE
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SET TEMP=C:\TEMP
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DOS=HIGH,UMB
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FILES=50
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</pre>
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<code>autoexec.bat</code><br>
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<pre>
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@ECHO OFF
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PROMPT $P$G
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PATH C:\DOSEMU;C:\DOS;C:\UTIL;
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SET TEMP=C:\TEMP
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Lh C:\DOS\DOSKEY /INSERT
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Lh C:\DOS\SHARE
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</pre>
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Now we are ready to try it, type <code>mbsedos</code> and the dos emulator
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should start. You can leave dosemu with the command <code>exitemu</code>.
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<p> </P>
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<h3>Installing a door</h3>
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<p>
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All doors are started using the script <code>~/bin/rundoor.sh</code>. This script
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is never started directly, you should make a copy of that with the name of the
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door, but the best solution is to make a symlink with the name of the door. For
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example:<br>
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<pre>
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mbse@seaport$ cd ~/bin
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mbse@seaport:~bin$ ln -s rundoor.sh 8ball
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</pre>
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See also inside <code>rundoor.sh</code> for the instructions. This file does
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several things, first it prepares the users home directory with the dosemu
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environment so that dosemu will run for the user. Then it creates a node
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directory in the dos C: drive and copies the door dropfiles into that node
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directory. Finally it starts dosemu in virtual comport mode and inserts the
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commands in dos to start the door.<br>
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But before we can run the door, the door itself must be installed in the dos
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partition.
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<img src="images/doors.png" alt="door setup" border="0">
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<p> <p>
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<h3>What if I don't upgrade</h3>
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<p>
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That's your choice, but for a while the old method starting dosemu via sudo is
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still supported. The file <code>~/bin/bbsdoor.sh</code> is still there, but the
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file <code>~/bin/rundoor.sh</code> is renamed to
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<code>~/bin/runvirtual.sh</code>. So you should change all symlinks of your door
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names in <code>~/bin</code> (or copies) to <code>~/bin/runvirtual.sh</code>. You
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should not need to change anything else.
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<p>
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