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Expose useful env vars to plugin processes (#349)

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* recommended paths for storing data
* improve helper functions
This commit is contained in:
Philipp Richter
2023-01-23 00:54:05 +00:00
committed by GitHub
parent c05e8f9ae0
commit c2b76d9099
5 changed files with 96 additions and 66 deletions
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backend/plugin.py
+22 -3
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@@ -7,10 +7,12 @@ from importlib.util import module_from_spec, spec_from_file_location
from json import dumps, load, loads
from logging import getLogger
from traceback import format_exc
from os import path, setgid, setuid
from os import path, setgid, setuid, environ
from signal import SIGINT, signal
from sys import exit
from time import time
import helpers
from updater import Updater
multiprocessing.set_start_method("fork")
@@ -19,6 +21,7 @@ BUFFER_LIMIT = 2 ** 20 # 1 MiB
class PluginWrapper:
def __init__(self, file, plugin_directory, plugin_path) -> None:
self.file = file
self.plugin_path = plugin_path
self.plugin_directory = plugin_directory
self.reader = None
self.writer = None
@@ -56,8 +59,24 @@ class PluginWrapper:
set_event_loop(new_event_loop())
if self.passive:
return
setgid(0 if "root" in self.flags else 1000)
setuid(0 if "root" in self.flags else 1000)
setgid(0 if "root" in self.flags else helpers.get_user_group_id())
setuid(0 if "root" in self.flags else helpers.get_user_id())
# export a bunch of environment variables to help plugin developers
environ["HOME"] = helpers.get_home_path("root" if "root" in self.flags else helpers.get_user())
environ["USER"] = "root" if "root" in self.flags else helpers.get_user()
environ["DECKY_VERSION"] = helpers.get_loader_version()
environ["DECKY_USER"] = helpers.get_user()
environ["DECKY_HOME"] = helpers.get_homebrew_path()
environ["DECKY_PLUGIN_SETTINGS_DIR"] = path.join(environ["DECKY_HOME"], "settings", self.plugin_directory)
helpers.mkdir_as_user(environ["DECKY_PLUGIN_SETTINGS_DIR"])
environ["DECKY_PLUGIN_RUNTIME_DIR"] = path.join(environ["DECKY_HOME"], "data", self.plugin_directory)
helpers.mkdir_as_user(environ["DECKY_PLUGIN_RUNTIME_DIR"])
environ["DECKY_PLUGIN_LOG_DIR"] = path.join(environ["DECKY_HOME"], "logs", self.plugin_directory)
helpers.mkdir_as_user(environ["DECKY_PLUGIN_LOG_DIR"])
environ["DECKY_PLUGIN_DIR"] = path.join(self.plugin_path, self.plugin_directory)
environ["DECKY_PLUGIN_NAME"] = self.name
environ["DECKY_PLUGIN_VERSION"] = self.version
environ["DECKY_PLUGIN_AUTHOR"] = self.author
spec = spec_from_file_location("_", self.file)
module = module_from_spec(spec)
spec.loader.exec_module(module)