Package Details: mx-puppet-discord-git r248.c17384a-3

Git Clone URL: (read-only, click to copy)
Package Base: mx-puppet-discord-git
Description: This is a Matrix bridge for Discord
Upstream URL:
Licenses: Apache
Conflicts: mx-puppet-discord
Provides: mx-puppet-discord
Submitter: BrainDamage
Maintainer: BrainDamage
Last Packager: BrainDamage
Votes: 1
Popularity: 0.71
First Submitted: 2020-11-06 09:15
Last Updated: 2021-04-07 21:17

Latest Comments

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Ta180m commented on 2021-04-07 23:51

@podiki Thanks, I actually found that guide when I was first getting this set up. Unfortunately, I think something's wrong with my Node installation since the Node scripts don't seem to run as root.

podiki commented on 2021-04-07 21:36

@BrainDamage thanks again for the package, the Discord bridge has been very handy!

I do have a brief line about the shared secret module, but just pointing people to what's in the sample config and the module readme. I found that simple and easy enough when I did it, but would be easy enough to add for completeness. And that module is good to have for other bridges as well.

BrainDamage commented on 2021-04-07 21:28

I apologize for all the mistakes, normally I am not this sloppy ...

I'll try to be careful from now on

@podiki: you can avoid .well-known by using the functionality in mx-puppet-discord/config.yaml ( few other bridges also support this functionality )

# Map of homeserver URLs to their C-S API endpoint
# Useful for double-puppeting if .well-known is unavailable for some reason
homeserverUrlMap: http://localhost:8008

podiki commented on 2021-04-07 21:09

@Ta180m (and anyone else) If it is helpful, I wrote up a guide to using this:

Ta180m commented on 2021-04-07 21:06

Thanks for maintaining this package! I tried the latest version, and I'm still running into tons of problems though, although I did get it to work with a lot of workarounds.

Also, I think the permissions on /var/lib/mx-puppet-discord should be 700, not 600.

Ta180m commented on 2021-03-29 16:25

For some reason, after editing /etc/mx-puppet-discord/config.yaml, when I run node /usr/lib/node_modules/mx-puppet-discord/build/index.js -c /etc/mx-puppet-discord/config.yaml -r -f /root/registration.yaml as root, the command never stops running. Checking my active processes, it doesn't even seem like node is doing anything. The same thing happens with node /usr/lib/node_modules/mx-puppet-discord/build/index.js -h which should print the help message. Does anyone know why this is happening? Perhaps something is wrong with my node installation?

EDIT: I generated a registration.yaml using the instructions in the GitHub repository, and now when I try to start mx-puppet-discord.service, I get the error Failed at step NAMESPACE spawning.

EDIT 2: I finally got the original GitHub repository to work. I don't know what's wrong with this package though.

EDIT 3: I figured out how to fix the systemd error: Turns out you need to manually create the /var/lib/mx-puppet-discord directory.

EDIT 4: Finally got a working setup! I first cloned the repo directly from GitHub, configured it, transferred ownership to the mx-puppet-discord user and reused the systemd service. Now it works perfectly!

EDIT 5: Synapse wasn't starting up fast enough on boot for mx-puppet-discord, so I had to add ExecStartPre=sleep 5 to the service file for it to work after a reboot.

podiki commented on 2021-03-02 01:14

Ah okay, that makes sense and would explain it! I guess you really only need to generate the file once (unless certain changes to config I guess?) which would explain why you wouldn't have noticed this.

Sorry to belabor the point, I did see how WorkingDirectory is expanded, but where is mx-puppet-discord's home directory set to /var/lib/mx-puppet-discord? I'm not seeing it in the user creation here or aware of where else it might be set. I just checked (via /etc/passwd) and I see the home directory for this user is /.

BrainDamage commented on 2021-03-02 00:06

I guess upstream changed behaviour since I did manage to get it to work in the past ...

I'll remove the file from the package and update the post-install instructions

re: working directory

   Takes a directory path relative to the service's root directory specified by RootDirectory=, or the special value "~". Sets the working directory for executed processes. If set to "~", the home
   directory of the user specified in User= is used. If not set, defaults to the root directory when systemd is running as a system instance and the respective user's home directory if run as user.

podiki commented on 2021-03-01 23:50

Thanks for the speedy response, much appreciated. I know I was mucking around a bit so may have made a little mess. I was doing this before the post install command message was fixed, and so may have changed something before fixing the typo. Not excluding anything below is just due to something I did, but figured I'd report back.

  1. Makes sense, figured that was the case, but

  2. I did indeed run with sudo and it won't overwrite. I just did it now with same permissions on a blank (touch only) file as included in the package (0644 root:mx-puppet-bridge) and gave an error (below). For some reason I didn't think to add synapse to the group, whoops!

  3. This doesn't happen for me, I need to explicitly set the working directory in the service file. I'm not seeing documentation where ~ expands to /var/lib/$USER or something similar, but I know little of systemd. I can try reinstalling this package or looking around, not sure why that happens for me (on ARM for what's that worth).

Mar-1 18:24:07.672 [PuppetBridge] info: Generating registration file...
Mar-1 18:24:07.677 [PuppetBridge] error: Registration file already exists!
Couldn't generate registration file: Error: Registration file already exists!
    at PuppetBridge.generateRegistration (/usr/lib/node_modules/mx-puppet-discord/node_modules/mx-puppet-bridge/lib/src/puppetbridge.js:226:19)
    at Object.<anonymous> (/usr/lib/node_modules/mx-puppet-discord/build/index.js:81:16)
    at Module._compile (internal/modules/cjs/loader.js:999:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
    at Module.load (internal/modules/cjs/loader.js:863:32)
    at Function.Module._load (internal/modules/cjs/loader.js:708:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:60:12)
    at internal/main/run_main_module.js:17:47

BrainDamage commented on 2021-03-01 23:14


the included empty registration file is so that it has the correct ownership and permissions from the installation, if you just create it on the fly it ends up world-readable by default, which leads us to


yes, there's a very good reason, the registration.yaml contains shared secrets between synapse and the bridge, so it's best if no other users can read it

the file is g+r by default, readable by members of mx-puppet-discord group (which includes its own user), so all it's necessary for the synapse user ro access it is to add it to the mx-puppet-discord group:

# usermod -aG mx-puppet-discord synapse

this of course is only valid if synapse runs on the same machine as the bridge, if it's not the file has to be copied over or made accessible through network mounts

the reason why the file is g-w and owned by another user (root) is in the case of a bug in the software itself it cannot overwrite the config, neither accidentally nor in the case of a software vulnerability (and it doesn't need to in order to run), also valid for synapse since it'd use the group membership to read it (but not write)

the daemon editing its own config doesn't apply to all cases, e.g. mautrix-telegram tries to auto-update its own config, so it does need to write permissions and be owned by the daemon's user, but mx-puppet-discord doesn't, so it's uneccessary to give it


WorkingDirectory=~ is expanded by systemd to the user's home dir as specified by man 5 systemd.exec, so what you did is redundant

ReadWritePaths is unnecessary as well, since the daemon only needs to read the config, not write it

Lastly: did you run the registration command as root? The # is standard slang for root executed commands (as opposed to $), which would've given the command the right permission to write the file's contents; having yourself deleted and re-created the file, now it has different permissions and ownership from the package so all my discourse about access may or may not apply depending on what you did