forked from Green-Sky/tomato
Green Sky
227425b90e
git-subtree-dir: external/toxcore/c-toxcore git-subtree-split: 67badf69416a74e74f6d7eb51dd96f37282b8455
123 lines
4.7 KiB
Python
Executable File
123 lines
4.7 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
"""
|
|
Copyright (c) 2014 by nurupo <nurupo.contributions@gmail.com>
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in
|
|
all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
THE SOFTWARE.
|
|
"""
|
|
import socket
|
|
import sys
|
|
|
|
if sys.version_info[0] == 2:
|
|
print("This script requires Python 3+ in order to run.")
|
|
sys.exit(1)
|
|
|
|
|
|
def print_help(prog: str) -> None:
|
|
"""Print program usage to stdout."""
|
|
print(f"Usage: {prog} <ipv4|ipv6> <ip/hostname> <port>")
|
|
print(f" Example: {prog} ipv4 192.210.149.121 33445")
|
|
print(f" Example: {prog} ipv4 23.226.230.47 33445")
|
|
print(f" Example: {prog} ipv4 node.tox.biribiri.org 33445")
|
|
print(f" Example: {prog} ipv4 cerberus.zodiaclabs.org 33445")
|
|
print(f" Example: {prog} ipv6 2604:180:1::3ded:b280 33445")
|
|
print("")
|
|
print("Return values:")
|
|
print(" 0 - received info reply from a node")
|
|
print(" 1 - incorrect command line arguments")
|
|
print(" 2 - didn't receive any reply from a node")
|
|
print(" 3 - received a malformed/unexpected reply")
|
|
|
|
|
|
# https://github.com/irungentoo/toxcore/blob/4940c4c62b6014d1f0586aa6aca7bf6e4ecfcf29/toxcore/network.h#L128
|
|
INFO_PACKET_ID = b"\xF0"
|
|
# https://github.com/irungentoo/toxcore/blob/881b2d900d1998981fb6b9938ec66012d049635f/other/bootstrap_node_packets.c#L28
|
|
INFO_REQUEST_PACKET_LENGTH = 78
|
|
# first byte is INFO_REQUEST_ID, other bytes don't matter as long as reqest's
|
|
# length matches INFO_REQUEST_LENGTH
|
|
INFO_REQUEST_PACKET = INFO_PACKET_ID + (
|
|
b"0" * (INFO_REQUEST_PACKET_LENGTH - len(INFO_PACKET_ID)))
|
|
|
|
PACKET_ID_LENGTH = len(INFO_PACKET_ID)
|
|
# https://github.com/irungentoo/toxcore/blob/881b2d900d1998981fb6b9938ec66012d049635f/other/bootstrap_node_packets.c#L44
|
|
VERSION_LENGTH = 4
|
|
# https://github.com/irungentoo/toxcore/blob/881b2d900d1998981fb6b9938ec66012d049635f/other/bootstrap_node_packets.c#L26
|
|
MAX_MOTD_LENGTH = 256
|
|
|
|
MAX_INFO_RESPONSE_PACKET_LENGTH = PACKET_ID_LENGTH + VERSION_LENGTH + MAX_MOTD_LENGTH
|
|
|
|
SOCK_TIMEOUT_SECONDS = 1.0
|
|
|
|
|
|
def main(prog: str, protocol: str, host: str, port: int) -> None:
|
|
"""Call the bootstrap node info RPC and output the response."""
|
|
if protocol == "ipv4":
|
|
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
|
|
elif protocol == "ipv6":
|
|
sock = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)
|
|
else:
|
|
print("Invalid first argument")
|
|
print_help(prog)
|
|
sys.exit(1)
|
|
|
|
sock.sendto(INFO_REQUEST_PACKET, (host, port))
|
|
|
|
sock.settimeout(SOCK_TIMEOUT_SECONDS)
|
|
|
|
try:
|
|
data, _ = sock.recvfrom(MAX_INFO_RESPONSE_PACKET_LENGTH)
|
|
except socket.timeout:
|
|
print("The DHT bootstrap node didn't reply in " +
|
|
str(SOCK_TIMEOUT_SECONDS) + " sec.")
|
|
print("The likely reason for that is that the DHT bootstrap node "
|
|
"is either offline or has no info set.")
|
|
sys.exit(2)
|
|
|
|
packet_id = data[:PACKET_ID_LENGTH]
|
|
if packet_id != INFO_PACKET_ID:
|
|
print("Bad response, first byte should be {info_packet_id!r}"
|
|
" but got {packet_id!r}({data!r})".format(
|
|
info_packet_id=INFO_PACKET_ID,
|
|
packet_id=packet_id,
|
|
data=data,
|
|
))
|
|
print("Are you sure that you are pointing the script at a Tox "
|
|
"DHT bootstrap node and that the script is up to date?")
|
|
sys.exit(3)
|
|
|
|
version = int.from_bytes(data[PACKET_ID_LENGTH:PACKET_ID_LENGTH +
|
|
VERSION_LENGTH],
|
|
byteorder="big")
|
|
motd = data[PACKET_ID_LENGTH + VERSION_LENGTH:].decode("utf-8")
|
|
print("Version: " + str(version))
|
|
print("MOTD: " + motd)
|
|
sys.exit(0)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
if len(sys.argv) != 4:
|
|
print_help(sys.argv[0])
|
|
sys.exit(1)
|
|
|
|
main(
|
|
prog=sys.argv[0],
|
|
protocol=sys.argv[1],
|
|
host=sys.argv[2],
|
|
port=int(sys.argv[3]),
|
|
)
|