2004-08-09 19:52:41 +00:00
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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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<TITLE>Running DOS doors on MBSE BBS.</TITLE>
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<BLOCKQUOTE>
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2004-11-05 11:53:47 +00:00
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<div align='right'><h5>Last update 05-Nov-2004</h5></div>
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2004-08-09 19:52:41 +00:00
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<div align='center'><H1>MBSE BBS - Running DOS doors.</H1></div>
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2004-08-10 20:44:16 +00:00
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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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2004-08-11 15:20:15 +00:00
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files must be copied into the mbse directory tree.<p>
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<em>One very important note: the virtual dos drive is now $MBSE_ROOT/var/dosemu/c
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Don't use another location or change the access rights, there will be several
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references from mbse to that and only that location for dos support.
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Choose another one and you are on your own!</em>
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2004-08-10 20:44:16 +00:00
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<p> <p>
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2004-08-09 19:52:41 +00:00
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2004-08-10 20:44:16 +00:00
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<h3>Installing dosemu</h3>
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<p>
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Some distributions have good dosemu packages, others don't. You need a dosemu
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that can be used in a systemwide multiuser setup. The bad packages want to have
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the dos drive in each users home directory, this is not what we want for doors.
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If you don't have a good dosemu you have to compile your own. This is not too
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complicated. First download the source from <a
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href="http://www.dosemu.org">dosemu</a>. You don't need the freedos-bin source
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if you are going to use ms-dos or pc-dos.
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Unpack the source in some directory of your choice and compile the sources:<br>
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<pre>
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mbse@seaport$ 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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2004-11-05 11:53:47 +00:00
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Next copy this new file as <code>virtual.conf</code> in
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<code>~/etc/dosemu/</code>. Then add the following line:
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<pre>
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$_com1 = "virtual"
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</pre>
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Note that in older dosemu versions you could use a commandline option to do
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this, but this isn't supported anymore since dosemu-1.2.x. The
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<code>rundoor.sh</code> now also uses two configuration files.<br>
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2004-08-10 20:44:16 +00:00
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Next we need to setup the C: drive. Do this as user mbse. First type <code>umask
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007</code>, this sets the create mode for directories to 0770 and files to 0660
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so that we create all files and directories read/write for all bbs users. This
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is very important! Type the following commands:
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<pre>
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mbse@seaport:~$ umask 007
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mbse@seaport:~$ cd var/dosemu/c
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2004-08-11 10:55:56 +00:00
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mbse@seaport:~/var/dosemu/c$ mkdir dos dosemu temp util doors
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2004-08-10 20:44:16 +00:00
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</pre>
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2004-08-11 10:55:56 +00:00
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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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<pre>
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2004-08-11 14:02:22 +00:00
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config.sys:
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2004-08-11 10:55:56 +00:00
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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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2004-08-11 14:02:22 +00:00
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autoexec.bat:
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2004-08-11 10:55:56 +00:00
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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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2004-08-11 11:11:41 +00:00
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Now we are ready to try it, type <code>mbsedos</code> and the dos emulator
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2004-08-11 11:33:10 +00:00
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should start. You can leave dosemu with the command <code>exitemu</code>.
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2004-08-10 20:44:16 +00:00
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<p> </P>
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2004-08-11 11:33:10 +00:00
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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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2004-08-11 11:38:09 +00:00
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mbse@seaport:~bin$ ln -s rundoor.sh 8ball
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2004-08-11 11:33:10 +00:00
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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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2004-08-11 14:02:22 +00:00
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partition. In this example I will explain how to install the door 8ball.
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Start <code>mbsedos</code> and create a directory <code>c:\doors\8ball</code>.
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Unpack 8ball in that directory and run <code>setup</code>. Test the door with
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the command <code>local</code>. Now goto the directory <code>c:\doors</code> and
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create the file <code>8ball.bat</code>. That file will be used to start the
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door. It will be called by <code>c:\doors.bat</code> with two parameters, the
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name of the door and the nodenumber.
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<pre>
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@ECHO OFF
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C:
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C:\UTIL\X00 E B,0,57600
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CD \DOORS\8BALL
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ASKME.EXE /E /C1 /PC:\DOORS\NODE%1
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C:\UTIL\X00
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CD \DOORS\NODE%1
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DEL DOOR.SYS
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DEL DOOR32.SYS
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</pre>
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Finally we have to make a menu entry to start the door. The Opt. Data line is
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the command to start the door, the optional <code>/N</code> is replaced by the
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current nodenumber of the user. A second option may be used,
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<code>novirtual</code>, if that is present the <code>rundoor.sh</code> will
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start dosemu without setting the comport in virtual mode. Use this if your door
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isn't a real door but a normal dos program.
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<p>
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<img src="images/doors.png" alt="door setup" border="0"><p>
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Note that I use the
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Display lines to make the menu, there are only ansi screens for the top and
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common lines on the screen, see the second image how to build the whole doors
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menu.
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<p>
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<img src="images/doors2.png" alt="doors menu" border="0">
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<p>
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2004-08-11 15:20:15 +00:00
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<p> <p>
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<h3>Netmail support</h3>
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<p>
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In the virtual c: drive you need some directories that point to several other
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mbse subdirectories. You may need at least three of them, one to put netmail in,
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one to put files in to send and one semafore directory to tell mbse there is
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something to send. For example like this:
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<pre>
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ln -s /opt/mbse/var/msgs /opt/mbse/var/dosemu/c/msgs
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ln -s /opt/mbse/var/boxes/node92_100_60 /opt/mbse/var/dosemu/c/outbox
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2004-09-14 20:37:57 +00:00
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ln -s /opt/mbse/var/sema /opt/mbse/var/dosemu/c/sema
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2004-08-11 15:20:15 +00:00
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</pre>
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In dos you now have:
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<pre>
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C:\MSGS
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C:\OUTBOX
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C:\SEMA
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</pre>
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In <code>C:\MSGS</code> doors may put *.msg netmails.
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File attaches won't work from these netmails because the netmails
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point to files with dosnames. (May be solved later). The script that calls the
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door, for example <code>c:\doors\bre.bat</code> must copy the file to send to
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the node outbound box. In the above example that would be copy to
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<code>C:\OUTBOX</code>.
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To create the semafore to tell mbse to scan add to the batfile (for example
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<code>C:\DOORS\BRE.BAT</code> the following two lines:
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<pre>
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CD C:\SEMA
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ECHO "">MAILOUT
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</pre>
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See also the <a href="faq.html#_Doors">F.A.Q.</a> for some very usefull tips and
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tricks.
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Using the same method with symlinks, you can make all paths you need from the
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rest of mbse visible in dos. Use with care.
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2004-08-11 11:33:10 +00:00
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<p> <p>
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2004-08-10 20:44:16 +00:00
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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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2004-08-09 19:52:41 +00:00
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2004-11-05 11:53:47 +00:00
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<h3>Problems</h3>
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<p>
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Currently there are some troubles with modem calls.
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<p>
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2004-08-09 19:52:41 +00:00
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<A HREF="index.htm"><IMG SRC="images/b_arrow.png" ALT="Back" Border="0">Go Back</A>
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