168 lines
6.0 KiB
Markdown
168 lines
6.0 KiB
Markdown
---
|
|
layout: page
|
|
title: Local Doors
|
|
---
|
|
## The abracadabra Module
|
|
The `abracadabra` module provides a generic and flexible solution for many door types. Through this module you can execute native processes & scripts directly, and process I/O through stdio or a temporary TCP server.
|
|
|
|
The `abracadabra` `config` block can contain the following:
|
|
* `name`: Used as a key for tracking number of clients using a particular door
|
|
* `dropFileType`: Specifies the type of drop file to generate (See table below)
|
|
* `cmd`: Path to executable to launch
|
|
* `args`: Array of argument(s) to pass to `cmd`. See below for information on variables that can be used here.
|
|
* `nodeMax`: Max number of nodes that can access this door at once. Uses `name` as a mapping key
|
|
* `tooManyArt`: Art file spec to display if too many instances are already in use
|
|
* `io`: Where to process I/O. Can be `stdio` or `socket`
|
|
|
|
Drop file types specified by `dropFileType`:
|
|
* `DOOR`: [DOOR.SYS](http://goldfndr.home.mindspring.com/dropfile/doorsys.htm)
|
|
* `DOOR32`: [DOOR32.SYS](http://wiki.bbses.info/index.php/DOOR32.SYS)
|
|
* `DORINFO`: [DORINFOx.DEF](http://goldfndr.home.mindspring.com/dropfile/dorinfo.htm)
|
|
|
|
Variables for use in `args`:
|
|
* `{node}`: Current node number
|
|
* `{dropFile}`: Path to generated drop file
|
|
* `{userId}`: Current user ID
|
|
* `{srvPort}`: Tempoary server port when `io` is `socket`
|
|
|
|
|
|
### DOSEMU with abracadabra
|
|
[DOSEMU](http://www.dosemu.org/) can provide a good solution for running legacy DOS doors when running on Linux systems. For this, we will create a virtual serial port (COM1) that communicates via stdio.
|
|
|
|
As an example, here are the steps for setting up Pimp Wars:
|
|
|
|
First, create a `dosemu.conf` file with the following contents:
|
|
```
|
|
$_cpu = "80486"
|
|
$_cpu_emu = "vm86"
|
|
$_external_char_set = "utf8"
|
|
$_internal_char_set = "cp437"
|
|
$_term_updfreq = (8)
|
|
$_layout = "us"
|
|
$_rawkeyboard = (0)
|
|
$_com1 = "virtual"
|
|
```
|
|
|
|
The line `$_com1 = "virtual"` tells DOSEMU to use `stdio` as a virtual serial port on COM1.
|
|
|
|
Next, we create a virtual **X** drive for Pimp Wars to live such as `/enigma-bbs/DOS/X/PW` and map it with a custom `autoexec.bat` file within DOSEMU:
|
|
```
|
|
@echo off
|
|
path d:\bin;d:\gnu;d:\dosemu
|
|
set TEMP=c:\tmp
|
|
prompt $P$G
|
|
REM http://www.pcmicro.com/bnu/
|
|
C:\BNU\BNU.COM /L0:57600,8N1 /F
|
|
lredir.com x: linux\fs\enigma-bbs\DOS\X
|
|
unix -e
|
|
```
|
|
|
|
Note that we also have the [BNU](http://www.pcmicro.com/bnu/) FOSSIL driver installed at `C:\BNU\\`. Another option would be to install this to X: somewhere as well.
|
|
|
|
Finally, let's create a `menu.hjson` entry to launch the game:
|
|
```hjson
|
|
doorPimpWars: {
|
|
desc: Playing PimpWars
|
|
module: abracadabra
|
|
config: {
|
|
name: PimpWars
|
|
dropFileType: DORINFO
|
|
cmd: /usr/bin/dosemu
|
|
args: [
|
|
"-quiet",
|
|
"-f",
|
|
"/path/to/dosemu.conf",
|
|
"X:\\PW\\START.BAT {dropFile} {node}"
|
|
],
|
|
nodeMax: 1
|
|
tooManyArt: DOORMANY
|
|
io: stdio
|
|
}
|
|
}
|
|
|
|
```
|
|
|
|
### QEMU with abracadabra
|
|
[QEMU](http://wiki.qemu.org/Main_Page) provides a robust, cross platform solution for launching doors under many platforms (likely anwywhere Node.js is supported and ENiGMA½ can run). Note however that there is an important and major caveat: **Multiple instances of a particular door/OS image should not be run at once!** Being more flexible means being a bit more complex. Let's look at an example for running L.O.R.D. under a UNIX like system such as Linux or FreeBSD.
|
|
|
|
Basically we'll be creating a bootstrap shell script that generates a temporary node specific `go.bat` to launch our door. This will be called from `autoexec.bat` within our QEMU FreeDOS partition.
|
|
|
|
#### Step 1: Create a FreeDOS image
|
|
[FreeDOS](http://www.freedos.org/) is a free mostly MS-DOS compatible DOS package that works well for running 16bit doors. Follow the [QEMU/FreeDOS](https://en.wikibooks.org/wiki/QEMU/FreeDOS) guide for creating an `freedos_c.img`. This will contain FreeDOS itself and installed BBS doors.
|
|
|
|
After this is complete, copy LORD to C:\DOORS\LORD within FreeDOS. An easy way to tranfer files from host to DOS is to use QEMU's vfat as a drive. For example:
|
|
```bash
|
|
qemu-system-i386 -localtime /home/enigma/dos/images/freedos_c.img -hdb fat:/path/to/downloads
|
|
```
|
|
|
|
With the above you can now copy files from D: to C: within FreeDOS and add the following to it's `autoexec.bat`:
|
|
```batch
|
|
CALL E:\GO.BAT
|
|
```
|
|
|
|
#### Step 2: Create a bootstrap script
|
|
Our bootstrap script will prepare `GO.BAT` and launch FreeDOS. Below is an example:
|
|
|
|
|
|
```bash
|
|
#!/bin/bash
|
|
|
|
NODE=$1
|
|
DROPFILE=D:\\$2
|
|
SRVPORT=$3
|
|
|
|
mkdir -p /home/enigma/dos/go/node$NODE
|
|
|
|
cat > /home/enigma/dos/go/node$NODE/GO.BAT <<EOF
|
|
C:
|
|
CD \FOSSIL\BNU
|
|
BNU.COM
|
|
CD \DOORS\LORD
|
|
COPY /Y $DROPFILE
|
|
CALL START.BAT $NODE
|
|
FDAPM POWEROFF
|
|
EOF
|
|
|
|
unix2dos /home/enigma/dos/go/node$NODE/GO.BAT
|
|
|
|
qemu-system-i386 -localtime /home/enigma/dos/images/freedos_c.img -chardev socket,port=$SRVPORT,nowait,host=localhost,id=s0 -device isa-serial,chardev=s0 -hdb fat:/home/enigma/xibalba/dropfiles/node$NODE -hdc fat:/home/enigma/dos/go/node$NODE -nographic
|
|
```
|
|
|
|
Note the `qemu-system-i386` line. We're telling QEMU to launch and use localtime for the clock, create a character device that connects to our temporary server port on localhost and map that to a serial device. The `-hdb` entry will represent the D: drive where our drop file is generated, while `-hdc` is the path that `GO.BAT` is generated in (`E:\GO.BAT`). Finally we specify `-nographic` to run headless.
|
|
|
|
For doors that do not *require* a FOSSIL driver, it is recommended to not load or use one unless you are having issues.
|
|
|
|
#### Step 3: Create a menu entry
|
|
Finally we can create a `menu.hjson` entry using the `abracadabra` module:
|
|
```hjson
|
|
doorLORD: {
|
|
desc: Playing L.O.R.D.
|
|
module: abracadabra
|
|
config: {
|
|
name: LORD
|
|
dropFileType: DOOR
|
|
cmd: /home/enigma/dos/scripts/lord.sh
|
|
args: [
|
|
"{node}",
|
|
"{dropFile}",
|
|
"{srvPort}",
|
|
],
|
|
nodeMax: 1
|
|
tooManyArt: DOORMANY
|
|
io: socket
|
|
}
|
|
}
|
|
```
|
|
|
|
## Resources
|
|
|
|
### DOSBox
|
|
* Custom DOSBox builds http://home.arcor.de/h-a-l-9000/
|
|
|
|
### Door Downloads & Support Sites
|
|
#### General
|
|
* http://bbsfiles.com/
|
|
* http://bbstorrents.bbses.info/
|
|
|
|
#### L.O.R.D.
|
|
* http://lord.lordlegacy.com/ |