112 lines
4.2 KiB
Python
112 lines
4.2 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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# Fenrir TTY screen reader
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# By Chrys, Storm Dragon, and contributors.
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import os
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import os.path
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import select
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import socket
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from fenrirscreenreader.core import debug
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from fenrirscreenreader.core.eventData import FenrirEventType
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from fenrirscreenreader.core.remoteDriver import RemoteDriver as remoteDriver
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class driver(remoteDriver):
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def __init__(self):
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remoteDriver.__init__(self)
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def initialize(self, environment):
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self.env = environment
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self.env["runtime"]["ProcessManager"].add_custom_event_thread(
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self.watch_dog, multiprocess=True
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)
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def watch_dog(self, active, event_queue):
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# echo "command say this is a test" | socat -
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# UNIX-CLIENT:/tmp/fenrirscreenreader-deamon.sock
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socket_file = ""
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try:
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socket_file = self.env["runtime"]["SettingsManager"].get_setting(
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"remote", "socket_file"
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)
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except Exception as e:
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self.env["runtime"]["DebugManager"].write_debug_out(
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"unixDriver watch_dog: Error getting socket file setting: "
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+ str(e),
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debug.DebugLevel.ERROR,
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)
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if socket_file == "":
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if (
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self.env["runtime"]["SettingsManager"].get_setting(
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"screen", "driver"
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)
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== "vcsaDriver"
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):
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socket_file = "/tmp/fenrirscreenreader-deamon.sock"
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else:
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socket_file = (
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"/tmp/fenrirscreenreader-" + str(os.getppid()) + ".sock"
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)
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if os.path.exists(socket_file):
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os.unlink(socket_file)
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self.fenrirSock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
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self.fenrirSock.bind(socket_file)
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os.chmod(socket_file, 0o666) # Allow all users to read/write
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self.fenrirSock.listen(1)
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while active.value:
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# Check if the client is still connected and if data is available:
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try:
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r, _, _ = select.select([self.fenrirSock], [], [], 0.8)
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except select.error:
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break
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if r == []:
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continue
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if self.fenrirSock in r:
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client_sock, client_addr = self.fenrirSock.accept()
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# Ensure client socket is always closed to prevent resource
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# leaks
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try:
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try:
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rawdata = client_sock.recv(8129)
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except Exception as e:
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self.env["runtime"]["DebugManager"].write_debug_out(
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"unixDriver watch_dog: Error receiving data from "
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"client: "
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+ str(e),
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debug.DebugLevel.ERROR,
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)
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rawdata = b"" # Set default empty data if recv fails
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try:
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data = rawdata.decode("utf-8").rstrip().lstrip()
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event_queue.put(
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{
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"Type": FenrirEventType.remote_incomming,
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"data": data,
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}
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)
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except Exception as e:
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self.env["runtime"]["DebugManager"].write_debug_out(
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"unixDriver watch_dog: Error decoding/queuing data: "
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+ str(e),
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debug.DebugLevel.ERROR,
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)
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finally:
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# Always close client socket, even if data processing fails
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try:
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client_sock.close()
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except Exception as e:
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self.env["runtime"]["DebugManager"].write_debug_out(
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"unixDriver watch_dog: Error closing client socket: "
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+ str(e),
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debug.DebugLevel.ERROR,
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)
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if self.fenrirSock:
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self.fenrirSock.close()
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self.fenrirSock = None
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if os.path.exists(socket_file):
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os.unlink(socket_file)
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