add dbus and dri

lib/dbus.nim

@@ -0,0 +1,54 @@
+import strformat
+import options
+import config
+import osproc
+import random
+import os
+
+type DbusProxy* = object
+  process*: Process
+  socket*: string
+  args: seq[string]
+
+proc exec*(proxy: DbusProxy): Process =
+  # todo: start dbus proxy in bwrap
+  # todo: pass arguments as fd
+  startProcess("xdg-dbus-proxy", args = proxy.args,
+    options = {poEchoCmd, poParentStreams, poUsePath})
+
+proc startDBusProxy*(config: Config, hostname: string): DbusProxy =
+  let busPath = getEnv("DBUS_SESSION_BUS_ADDRESS")
+  let runtimeDir = getEnv("XDG_RUNTIME_DIR")
+
+  if busPath == "" or runtimeDir == "":
+    raise newException(IOError, "DBUS_SESSION_BUS_ADDRESS and XDG_RUNTIME_DIR are required")
+
+  let id = rand(1000)
+  let filterName = &"dbus-proxy-{hostname}-{id}"
+
+  var proxy = DbusProxy()
+  proxy.socket = &"{runtimeDir}/{filterName}"
+
+  proxy.args.add(busPath)
+  proxy.args.add(proxy.socket)
+
+  for name in config.dbussee.get(@[]):
+    proxy.args.add(&"--see={name}")
+
+  for name in config.dbustalk.get(@[]):
+    proxy.args.add(&"--talk={name}")
+
+  for name in config.dbuscall.get(@[]):
+    proxy.args.add(&"--call={name}")
+
+  for name in config.dbusown.get(@[]):
+    proxy.args.add(&"--own={name}")
+
+  for name in config.dbusbroadcast.get(@[]):
+    proxy.args.add(&"--broadcast={name}")
+
+  proxy.args.add("--filter")
+  proxy.args.add("--log")
+  proxy.process = proxy.exec()
+
+  proxy