def create_control_socket(self):
assert self.socket_dir
username = get_username_for_uid(self.uid)
dotxpra = DotXpra(self.socket_dir, actual_username=username, uid=self.uid, gid=self.gid)
sockpath = dotxpra.socket_path(":proxy-%s" % os.getpid())
state = dotxpra.get_server_state(sockpath)
log("create_control_socket: socket path='%s', uid=%i, gid=%i, state=%s", sockpath, getuid(), getgid(), state)
if state in (DotXpra.LIVE, DotXpra.UNKNOWN):
log.error("Error: you already have a proxy server running at '%s'", sockpath)
log.error(" the control socket will not be created")
return False
d = os.path.dirname(sockpath)
try:
dotxpra.mksockdir(d)
except Exception as e:
log.warn("Warning: failed to create socket directory '%s'", d)
log.warn(" %s", e)
try:
sock, self.control_socket_cleanup = create_unix_domain_socket(sockpath, None, 0o600)
sock.listen(5)
except Exception as e:
log("create_unix_domain_socket failed for '%s'", sockpath, exc_info=True)
log.error("Error: failed to setup control socket '%s':", sockpath)
log.error(" %s", e)
return False
self.control_socket = sock
self.control_socket_path = sockpath
log.info("proxy instance now also available using unix domain socket:")
log.info(" %s", self.control_socket_path)
return True
def create_control_socket(self):
assert self.socket_dir
def stop(msg):
self.stop(None, "cannot create the proxy control socket: %s" % msg)
username = get_username_for_uid(self.uid)
dotxpra = DotXpra(self.socket_dir,
actual_username=username,
uid=self.uid,
gid=self.gid)
sockname = ":proxy-%s" % os.getpid()
sockpath = dotxpra.socket_path(sockname)
log("%s.socket_path(%s)=%s", dotxpra, sockname, sockpath)
state = dotxpra.get_server_state(sockpath)
log(
"create_control_socket: socket path='%s', uid=%i, gid=%i, state=%s",
sockpath, getuid(), getgid(), state)
if state in (DotXpra.LIVE, DotXpra.UNKNOWN, DotXpra.INACCESSIBLE):
log.error("Error: you already have a proxy server running at '%s'",
sockpath)
log.error(" the control socket will not be created")
stop("socket already exists")
return False
d = os.path.dirname(sockpath)
try:
dotxpra.mksockdir(d, SOCKET_DIR_MODE)
except Exception as e:
log.warn("Warning: failed to create socket directory '%s'", d)
log.warn(" %s", e)
try:
sock, self.control_socket_cleanup = create_unix_domain_socket(
sockpath, 0o600)
sock.listen(5)
except Exception as e:
log("create_unix_domain_socket failed for '%s'",
sockpath,
exc_info=True)
log.error("Error: failed to setup control socket '%s':", sockpath)
handle_socket_error(sockpath, 0o600, e)
stop(e)
return False
self.control_socket = sock
self.control_socket_path = sockpath
log.info("proxy instance now also available using unix domain socket:")
log.info(" %s", self.control_socket_path)
return True
def setup_local_sockets(bind,
socket_dir,
socket_dirs,
display_name,
clobber,
mmap_group=False,
socket_permissions="600",
username="",
uid=0,
gid=0):
if not bind:
return []
if not socket_dir and (not socket_dirs or
(len(socket_dirs) == 1 and not socket_dirs[0])):
raise InitException(
"at least one socket directory must be set to use unix domain sockets"
)
dotxpra = DotXpra(socket_dir or socket_dirs[0], socket_dirs, username, uid,
gid)
display_name = normalize_local_display_name(display_name)
log = get_network_logger()
defs = []
try:
sockpaths = []
log("setup_local_sockets: bind=%s", bind)
for b in bind:
sockpath = b
if b == "none" or b == "":
continue
elif b == "auto":
sockpaths += dotxpra.norm_socket_paths(display_name)
log("sockpaths(%s)=%s (uid=%i, gid=%i)", display_name,
sockpaths, uid, gid)
else:
sockpath = dotxpra.osexpand(b)
if b.endswith("/") or (os.path.exists(sockpath)
and os.path.isdir(sockpath)):
sockpath = os.path.abspath(sockpath)
if not os.path.exists(sockpath):
os.makedirs(sockpath)
sockpath = norm_makepath(sockpath, display_name)
elif os.path.isabs(b):
sockpath = b
else:
sockpath = dotxpra.socket_path(b)
sockpaths += [sockpath]
assert sockpaths, "no socket paths to try for %s" % b
#expand and remove duplicate paths:
tmp = []
for tsp in sockpaths:
sockpath = dotxpra.osexpand(tsp)
if sockpath in tmp:
log.warn("Warning: skipping duplicate bind path %s", sockpath)
continue
tmp.append(sockpath)
sockpaths = tmp
#create listeners:
if WIN32:
from xpra.platform.win32.namedpipes.listener import NamedPipeListener
for sockpath in sockpaths:
npl = NamedPipeListener(sockpath)
log.info("created named pipe: %s", sockpath)
defs.append((("named-pipe", npl, sockpath), npl.stop))
else:
def checkstate(sockpath, state):
if state not in (DotXpra.DEAD, DotXpra.UNKNOWN):
if state == DotXpra.INACCESSIBLE:
raise InitException(
"An xpra server is already running at %s\n" %
(sockpath, ))
raise InitException(
"You already have an xpra server running at %s\n"
" (did you want 'xpra upgrade'?)" % (sockpath, ))
#remove exisiting sockets if clobber is set,
#otherwise verify there isn't a server already running
#and create the directories for the sockets:
unknown = []
for sockpath in sockpaths:
if clobber and os.path.exists(sockpath):
os.unlink(sockpath)
else:
state = dotxpra.get_server_state(sockpath, 1)
log("state(%s)=%s", sockpath, state)
checkstate(sockpath, state)
if state == dotxpra.UNKNOWN:
unknown.append(sockpath)
d = os.path.dirname(sockpath)
try:
dotxpra.mksockdir(d)
except Exception as e:
log.warn("Warning: failed to create socket directory '%s'",
d)
log.warn(" %s", e)
del e
#wait for all the unknown ones:
log("sockets in unknown state: %s", unknown)
if unknown:
#re-probe them using threads so we can do them in parallel:
from time import sleep
from xpra.make_thread import start_thread
threads = []
def timeout_probe(sockpath):
#we need a loop because "DEAD" sockets may return immediately
#(ie: when the server is starting up)
start = monotonic_time()
while monotonic_time() - start < WAIT_PROBE_TIMEOUT:
state = dotxpra.get_server_state(
sockpath, WAIT_PROBE_TIMEOUT)
log("timeout_probe() get_server_state(%s)=%s",
sockpath, state)
if state not in (DotXpra.UNKNOWN, DotXpra.DEAD):
break
sleep(1)
log.warn(
"Warning: some of the sockets are in an unknown state:")
for sockpath in unknown:
log.warn(" %s", sockpath)
t = start_thread(timeout_probe,
"probe-%s" % sockpath,
daemon=True,
args=(sockpath, ))
threads.append(t)
log.warn(
" please wait as we allow the socket probing to timeout")
#wait for all the threads to do their job:
for t in threads:
t.join(WAIT_PROBE_TIMEOUT + 1)
#now we can re-check quickly:
#(they should all be DEAD or UNKNOWN):
for sockpath in sockpaths:
state = dotxpra.get_server_state(sockpath, 1)
log("state(%s)=%s", sockpath, state)
checkstate(sockpath, state)
try:
if os.path.exists(sockpath):
os.unlink(sockpath)
except:
pass
#now try to create all the sockets:
for sockpath in sockpaths:
#create it:
try:
sock, cleanup_socket = create_unix_domain_socket(
sockpath, mmap_group, socket_permissions)
log.info("created unix domain socket: %s", sockpath)
defs.append(
(("unix-domain", sock, sockpath), cleanup_socket))
except Exception as e:
handle_socket_error(sockpath, e)
del e
except:
for sock, cleanup_socket in defs:
try:
cleanup_socket()
except Exception as e:
log.error("Error cleaning up socket %s:", sock)
log.error(" %s", e)
del e
defs = []
raise
return defs
def setup_local_sockets(bind,
socket_dir,
socket_dirs,
display_name,
clobber,
mmap_group="auto",
socket_permissions="600",
username="",
uid=0,
gid=0):
log = get_network_logger()
log("setup_local_sockets%s",
(bind, socket_dir, socket_dirs, display_name, clobber, mmap_group,
socket_permissions, username, uid, gid))
if not bind:
return {}
if not socket_dir and (not socket_dirs or
(len(socket_dirs) == 1 and not socket_dirs[0])):
if WIN32:
socket_dirs = [""]
else:
raise InitExit(
EXIT_SOCKET_CREATION_ERROR,
"at least one socket directory must be set to use unix domain sockets"
)
from xpra.platform.dotxpra import DotXpra, norm_makepath
dotxpra = DotXpra(socket_dir or socket_dirs[0], socket_dirs, username, uid,
gid)
if display_name is not None and not WIN32:
display_name = normalize_local_display_name(display_name)
defs = {}
try:
sockpaths = {}
log("setup_local_sockets: bind=%s, dotxpra=%s", bind, dotxpra)
for b in bind:
if b in ("none", ""):
continue
parts = b.split(",")
sockpath = parts[0]
options = {}
if len(parts) == 2:
options = parse_simple_dict(parts[1])
if sockpath == "auto":
assert display_name is not None
for sockpath in dotxpra.norm_socket_paths(display_name):
sockpaths[sockpath] = options
log("sockpaths(%s)=%s (uid=%i, gid=%i)", display_name,
sockpaths, uid, gid)
else:
sockpath = dotxpra.osexpand(sockpath)
if os.path.isabs(sockpath):
pass
elif sockpath.endswith("/") or (os.path.exists(sockpath)
and os.path.isdir(sockpath)):
assert display_name is not None
sockpath = os.path.abspath(sockpath)
if not os.path.exists(sockpath):
os.makedirs(sockpath)
sockpath = norm_makepath(sockpath, display_name)
else:
sockpath = dotxpra.socket_path(sockpath)
sockpaths[sockpath] = options
assert sockpaths, "no socket paths to try for %s" % b
#expand and remove duplicate paths:
tmp = {}
for tsp, options in sockpaths.items():
sockpath = dotxpra.osexpand(tsp)
if sockpath in tmp:
log.warn("Warning: skipping duplicate bind path %s", sockpath)
continue
tmp[sockpath] = options
sockpaths = tmp
log("sockpaths=%s", sockpaths)
#create listeners:
if WIN32:
from xpra.platform.win32.namedpipes.listener import NamedPipeListener
from xpra.platform.win32.dotxpra import PIPE_PATH
for sockpath, options in sockpaths.items():
npl = NamedPipeListener(sockpath)
ppath = sockpath
if ppath.startswith(PIPE_PATH):
ppath = ppath[len(PIPE_PATH):]
log.info("created named pipe '%s'", ppath)
defs[("named-pipe", npl, sockpath, npl.stop)] = options
else:
def checkstate(sockpath, state):
if state not in (DotXpra.DEAD, DotXpra.UNKNOWN):
if state == DotXpra.INACCESSIBLE:
raise InitException(
"An xpra server is already running at %s\n" %
(sockpath, ))
raise InitExit(
EXIT_SERVER_ALREADY_EXISTS,
"You already have an xpra server running at %s\n"
" (did you want 'xpra upgrade'?)" % (sockpath, ))
#remove exisiting sockets if clobber is set,
#otherwise verify there isn't a server already running
#and create the directories for the sockets:
unknown = []
for sockpath in sockpaths:
if clobber and os.path.exists(sockpath):
os.unlink(sockpath)
else:
state = dotxpra.get_server_state(sockpath, 1)
log("state(%s)=%s", sockpath, state)
checkstate(sockpath, state)
if state == dotxpra.UNKNOWN:
unknown.append(sockpath)
d = os.path.dirname(sockpath)
try:
kwargs = {}
if d in ("/var/run/xpra", "/run/xpra"):
#this is normally done by tmpfiles.d,
#but we may need to do it ourselves in some cases:
kwargs["mode"] = SOCKET_DIR_MODE
xpra_gid = get_group_id(SOCKET_DIR_GROUP)
if xpra_gid > 0:
kwargs["gid"] = xpra_gid
log("creating sockdir=%s, kwargs=%s" % (d, kwargs))
dotxpra.mksockdir(d, **kwargs)
log("%s permission mask: %s", d, oct(os.stat(d).st_mode))
except Exception as e:
log.warn("Warning: failed to create socket directory '%s'",
d)
log.warn(" %s", e)
del e
#wait for all the unknown ones:
log("sockets in unknown state: %s", unknown)
if unknown:
#re-probe them using threads so we can do them in parallel:
threads = []
def timeout_probe(sockpath):
#we need a loop because "DEAD" sockets may return immediately
#(ie: when the server is starting up)
start = monotonic_time()
while monotonic_time() - start < WAIT_PROBE_TIMEOUT:
state = dotxpra.get_server_state(
sockpath, WAIT_PROBE_TIMEOUT)
log("timeout_probe() get_server_state(%s)=%s",
sockpath, state)
if state not in (DotXpra.UNKNOWN, DotXpra.DEAD):
break
sleep(1)
log.warn(
"Warning: some of the sockets are in an unknown state:")
for sockpath in unknown:
log.warn(" %s", sockpath)
t = start_thread(timeout_probe,
"probe-%s" % sockpath,
daemon=True,
args=(sockpath, ))
threads.append(t)
log.warn(
" please wait as we allow the socket probing to timeout")
#wait for all the threads to do their job:
for t in threads:
t.join(WAIT_PROBE_TIMEOUT + 1)
if sockpaths:
#now we can re-check quickly:
#(they should all be DEAD or UNKNOWN):
for sockpath in sockpaths:
state = dotxpra.get_server_state(sockpath, 1)
log("state(%s)=%s", sockpath, state)
checkstate(sockpath, state)
try:
if os.path.exists(sockpath):
os.unlink(sockpath)
except OSError:
pass
#socket permissions:
if mmap_group.lower() in TRUE_OPTIONS:
#when using the mmap group option, use '660'
sperms = 0o660
else:
#parse octal mode given as config option:
try:
if isinstance(socket_permissions, int):
sperms = socket_permissions
else:
#assume octal string:
sperms = int(socket_permissions, 8)
assert 0 <= sperms <= 0o777, "invalid socket permission value %s" % oct(
sperms)
except ValueError:
raise ValueError("invalid socket permissions " +
"(must be an octal number): '%s'" %
socket_permissions) from None
#now try to create all the sockets:
for sockpath, options in sockpaths.items():
#create it:
try:
sock, cleanup_socket = create_unix_domain_socket(
sockpath, sperms)
log.info("created unix domain socket '%s'", sockpath)
defs[("unix-domain", sock, sockpath,
cleanup_socket)] = options
except Exception as e:
handle_socket_error(sockpath, sperms, e)
del e
except Exception:
for sock, cleanup_socket in defs.items():
try:
cleanup_socket()
except Exception as e:
log.error("Error cleaning up socket %s:", sock)
log.error(" %s", e)
del e
raise
return defs
