def osexpand(self, v):
return osexpand(v, self.username, self.uid, self.gid)
def osexpand(self, v):
return osexpand(v, self.username, self.uid, self.gid)
def __init__(self, username, **kwargs):
SysAuthenticator.__init__(self, username)
log("peercred.Authenticator(%s, %s)", username, kwargs)
self.uid = -1
self.gid = -1
if not POSIX:
log.warn("Warning: peercred authentication is not supported on %s",
os.name)
return
connection = kwargs.get("connection", None)
uids = kwargs.get("uid")
gids = kwargs.get("gid")
allow_uids = None
allow_gids = None
if uids:
allow_uids = []
for x in uids.split(","):
x = osexpand(x.strip())
try:
allow_uids.append(int(x))
except:
import pwd
try:
pw = pwd.getpwnam(x)
uids.append(pw.pw_uid)
except KeyError as e:
log.warn("Warning: unknown username '%s'", x)
log("peercred: allow_uids(%s)=%s", uids, allow_uids)
if gids:
allow_gids = []
for x in gids.split(","):
x = osexpand(x.strip())
try:
allow_gids.append(int(x))
except:
gid = get_group_id(x)
if gid >= 0:
allow_gids.append(gid)
else:
log.warn("Warning: unknown group '%s'", x)
log("peercred: allow_gids(%s)=%s", gids, allow_gids)
try:
from xpra.net.bytestreams import SocketConnection
if connection and isinstance(connection, SocketConnection):
sock = connection._socket
peercred = get_peercred(sock)
log("get_peercred(%s)=%s", sock, peercred)
if not peercred:
log.warn("Warning: failed to get peer credentials on %s",
sock)
return
_, uid, gid = peercred
if allow_uids is not None and uid not in allow_uids:
log.warn("Warning: peercred access denied,")
log.warn(" uid %i is not in the whitelist: %s", uid,
csv(allow_uids))
elif allow_gids is not None and gid not in allow_gids:
log.warn("Warning: peercred access denied,")
log.warn(" gid %i is not in the whitelist: %s", gid,
csv(allow_gids))
else:
self.uid = uid
self.gid = gid
else:
log(
"peercred: invalid connection '%s' (not a socket connection)",
connection)
except Exception as e:
log.error("Error: cannot get peer uid")
log.error(" %s", e)
def osexpand(self, v):
return osexpand(v, self.username)
def osexpand(self, v):
return osexpand(v, self.username)
