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author John "Elwin" Edwards
date Thu, 14 Jan 2016 21:31:23 -0500
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1 ===== RLGWebD =====
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2
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3 RLGWebD is a node.js app that enables playing roguelike games in the
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4 browser. It is intended to be compatible with dgamelaunch.
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5
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6 Node
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7 ---
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8 RLGWebD currently works with Node v0.10.
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9
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10 It requires the 'posix', 'pty.js', and 'websocket' modules. Currently,
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11 it expects them to be installed in the global location, which is
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12 "/usr/lib/node_modules". It is planned to eventually use a different
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13 location so that npm will not need to run as root.
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14
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15 init
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16 ---
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17 RLGWebD now includes a systemd unit file, which is the recommended way
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18 to run it. See below for more instructions.
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19
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20 For other init systems, a shell script is provided. This is not really
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21 a proper initscript, but it could form the basis of one.
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22
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23 Configuration
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24 ---
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25 You can change the location of the chroot, the name of the dgamelaunch
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26 user, and the port number by editing the first few lines of the rlgwebd
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27 script. If you change the chroot location, change it in the Makefile
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28 too.
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29
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30 Installation
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31 ---
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32 RLGWebD expects to be run in a chroot used by dgamelaunch, and it makes
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33 some assumptions about the configuration. It expects the dgamelaunch
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34 playground to be at /dgldir inside the chroot. It expects the
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35 in-progress files to be in /dgldir/inprogress/<gamename>. RLGWebD
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36 creates in-progress files in those locations, and dgamelaunch must be
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37 patched to prevent it from deleting them.
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38
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39 It needs the devpts filesystem mounted inside the chroot. This can be
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40 done with a line in /etc/fstab like the following:
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41 devpts CHROOT/dev/pts devpts newinstance,ptmxmode=666 0 0
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42
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43 RLGWebD uses two separate programs written in C. sqlickrypt operates
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44 on the dgamelaunch user database. dglwatcher monitors the inprogress
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45 directories. Run "make" to build both of them.
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47 sqlickrypt needs /dev/urandom to exist in the chroot. Run as root:
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48 mknod CHROOT/dev/urandom c 1 9
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49
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50 Running "make install" will:
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51 Copy the Web assets into the chroot
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52 Copy the C programs and the libraries they need into the chroot
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53 Install the main RLGWebD script in /usr/local/bin
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54 Place the systemd unit file in the proper directory
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55
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56 If you don't use systemd, or want to change the installation locations,
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57 you will have to edit the Makefile.
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58
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59 You will still need to run "systemctl enable rlgwebd" to make the
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60 server start on boot, and "systemctl start rlgwebd" to make it start
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61 immediately.
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63 Starting and stopping RLGWebD
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64 ---
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65 If you are using systemd, "systemctl start" and "systemctl stop" should
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66 work as with any other service.
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68 If you are using the initscript, running it with no arguments will
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69 start RLGWebD. Stop by running it with 'stop' as an argument. (This
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70 requires socat to be installed.)
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72 webtty
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73 ---
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74 webtty.js is a Node app which uses the terminal emulator to run a shell. It
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75 includes NO SECURITY WHATSOEVER and should only be used for testing the
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76 terminal emulator. Copy index-sh.html to index.html before running it.