/usr/lib/python2.7/dist-packages/tryton/ipc.py is in tryton-client 3.8.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# this repository contains the full copyright notices and license terms.
"""
Inter-Process Communication
"""
import tempfile
import os
import threading
import select
import time
from tryton.config import get_config_dir
__all__ = ['Server', 'Client']
class IPCServer(object):
thread = None
running = None
instance = None
def __init__(self, hostname, port, database):
if Server.instance:
Server.instance.stop()
self.hostname = hostname
self.port = port
self.database = database
self.config = os.path.join(get_config_dir(), '%s@%s@%s' %
(self.hostname, self.port, self.database))
self.tmpdir = tempfile.mkdtemp(prefix='.tryton')
Server.instance = self
def setup(self):
raise NotImplemented
def run(self):
self.setup()
self.running = True
self.thread = threading.Thread(target=self._read)
self.thread.start()
def clean(self):
raise NotImplemented
def stop(self):
self.running = False
self.thread.join()
self.thread = None
self.clean()
Server.instance = None
def _read(self):
raise NotImplemented
class FileServer(IPCServer):
def setup(self):
config = open(self.config, 'w')
print >> config, self.tmpdir
def clean(self):
try:
os.remove(self.config)
os.rmdir(self.tmpdir)
except OSError:
pass
def _read(self):
to_remove = set()
while self.running:
for filename in os.listdir(self.tmpdir):
path = os.path.join(self.tmpdir, filename)
if not os.path.isfile(path):
continue
if path in to_remove:
continue
try:
data = open(path, 'r').readline()
except IOError:
pass
if data and data[-1] != '\n':
continue
to_remove.add(path)
if data:
from tryton.gui.main import Main
Main.get_main().open_url(data[:-1])
if not os.path.exists(self.config):
self.setup()
for path in to_remove.copy():
try:
os.remove(path)
except OSError:
continue
to_remove.remove(path)
time.sleep(1)
class FIFOServer(IPCServer):
def setup(self):
self.filename = os.path.join(self.tmpdir, 'Socket')
os.mkfifo(self.filename, 0600)
if os.path.lexists(self.config):
os.remove(self.config)
os.symlink(self.filename, self.config)
def clean(self):
try:
os.remove(self.config)
os.rmdir(self.tmpdir)
except OSError:
pass
def _read(self):
fifo = os.fdopen(os.open(self.filename, os.O_RDONLY | os.O_NONBLOCK))
data = ''
while self.running:
try:
rlist, _, _ = select.select([fifo], [], [], 1)
except select.error:
continue
if rlist:
try:
data += fifo.readline()
except IOError:
pass
if data and data[-1] != '\n':
continue
if data:
from tryton.gui.main import Main
Main.get_main().open_url(data.strip())
data = ''
if not os.path.lexists(self.config):
os.symlink(self.filename, self.config)
class IPCClient(object):
def __init__(self, hostname, port, database):
self.hostname = hostname
self.port = port
self.database = database
self.filename = os.path.join(get_config_dir(),
'%s@%s@%s' % (hostname, port, database))
def write(self, message):
raise NotImplemented
class FileClient(IPCClient):
def __init__(self, hostname, port, database):
super(FileClient, self).__init__(hostname, port, database)
def write(self, message):
if not os.path.exists(self.filename):
return False
tmpdir = open(self.filename, 'r').readline().strip()
_, tmpfile = tempfile.mkstemp(dir=tmpdir, text=True)
with open(tmpfile, 'w') as tmpfile:
print >> tmpfile, message
return True
class FIFOClient(IPCClient):
def __init__(self, hostname, port, database):
super(FIFOClient, self).__init__(hostname, port, database)
def write(self, message):
if not os.path.lexists(self.filename):
return False
fifo = open(self.filename, 'w')
print >> fifo, message
return True
if hasattr(os, 'mkfifo'):
Server = FIFOServer
Client = FIFOClient
else:
Server = FileServer
Client = FileClient
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