96 lines
3.2 KiB
Python
96 lines
3.2 KiB
Python
# This file is part of the Minecraft Overviewer.
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#
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# Minecraft Overviewer is free software: you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or (at
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# your option) any later version.
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#
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# Minecraft Overviewer is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with the Overviewer. If not, see <http://www.gnu.org/licenses/>.
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import socket
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#from enum import Enum
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import struct
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import select
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class RConException(Exception):
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def __init__(self, request_id, reason):
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self.request_id = request_id
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self.reason = reason
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def __str__(self):
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return ("Failed RCon request with request ID %d, reason %s" %
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(self.request_id, self.reason))
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# In D, enums are just that, enums. They're a group of named constants,
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# sometimes with a tag, sometimes anonymous.
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# In Python, Enums use the same syntax as class objects that derive from
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# the "Enum" base class, even though they are not normal python classes
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# and work as singletons anyway, but instead of using a different syntax,
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# Python instead decided to have a chapter in their docs about how Enums
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# are different from regular classes while looking exactly the same.
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# You can look at said document of failure right here:
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# https://docs.python.org/3/library/enum.html#how-are-enums-different
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#
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# "D has too much shit going on for me" -- agrif, 2014
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#
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# Fortunately, we're not allowed to use Enums in Python 2.
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#class RConType(Enum):
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# command = 2
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# login = 3
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class RConConnection():
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rid = 0
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def __init__(self, target, port):
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self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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self.sock.connect((target, port))
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def send(self, t, payload):
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self.rid = self.rid + 1
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header = struct.pack("<iii",
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len(payload) + 4 + 4 + 2, # rid, type and padding
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self.rid,
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t)
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data = header + payload + '\x00\x00'
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self.sock.send(data)
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toread = select.select([self.sock], [], [], 30)
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if not toread:
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raise RConException(self.rid, "Request timed out.")
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res_len, res_id, res_type = struct.unpack("<iii", self.sock.recv(12))
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res_data = self.sock.recv(res_len - 4 - 4)
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res_data = res_data[:-2]
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if res_id == -1:
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if t == 3:
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raise RConException(self.rid, "Login failed.")
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else:
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raise RConException(self.rid, "Request failed due to invalid login.")
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elif res_id != self.rid:
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raise RConException(self.rid,
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"Received unexpected response number: %d" % res_id)
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return res_data
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def login(self, password):
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self.send(3, password)
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def command(self, com, args):
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self.send(2, com + " " + args)
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def close(self):
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self.sock.close()
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