715 lines
26 KiB
Python
715 lines
26 KiB
Python
#!/usr/bin/env python3
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# MIT License
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#
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# Copyright (c) 2016-2022 Mark Qvist / unsigned.io
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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import RNS
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import subprocess
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import argparse
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import shlex
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import time
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import sys
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import tty
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import os
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from RNS._version import __version__
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APP_NAME = "rnx"
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identity = None
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reticulum = None
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allow_all = False
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allowed_identity_hashes = []
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def prepare_identity(identity_path):
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global identity
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if identity_path == None:
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identity_path = RNS.Reticulum.identitypath+"/"+APP_NAME
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if os.path.isfile(identity_path):
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identity = RNS.Identity.from_file(identity_path)
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if identity == None:
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RNS.log("No valid saved identity found, creating new...", RNS.LOG_INFO)
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identity = RNS.Identity()
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identity.to_file(identity_path)
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def listen(configdir, identitypath = None, verbosity = 0, quietness = 0, allowed = [], print_identity = False, disable_auth = None, disable_announce=False):
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global identity, allow_all, allowed_identity_hashes, reticulum
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targetloglevel = 3+verbosity-quietness
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reticulum = RNS.Reticulum(configdir=configdir, loglevel=targetloglevel)
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prepare_identity(identitypath)
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destination = RNS.Destination(identity, RNS.Destination.IN, RNS.Destination.SINGLE, APP_NAME, "execute")
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if print_identity:
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print("Identity : "+str(identity))
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print("Listening on : "+RNS.prettyhexrep(destination.hash))
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exit(0)
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if disable_auth:
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allow_all = True
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else:
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if allowed != None:
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for a in allowed:
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try:
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dest_len = (RNS.Reticulum.TRUNCATED_HASHLENGTH//8)*2
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if len(a) != dest_len:
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raise ValueError("Allowed destination length is invalid, must be {hex} hexadecimal characters ({byte} bytes).".format(hex=dest_len, byte=dest_len//2))
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try:
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destination_hash = bytes.fromhex(a)
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allowed_identity_hashes.append(destination_hash)
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except Exception as e:
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raise ValueError("Invalid destination entered. Check your input.")
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except Exception as e:
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print(str(e))
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exit(1)
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if len(allowed_identity_hashes) < 1 and not disable_auth:
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print("Warning: No allowed identities configured, rncx will not accept any commands!")
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destination.set_link_established_callback(command_link_established)
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if not allow_all:
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destination.register_request_handler(
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path = "command",
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response_generator = execute_received_command,
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allow = RNS.Destination.ALLOW_LIST,
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allowed_list = allowed_identity_hashes
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)
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else:
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destination.register_request_handler(
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path = "command",
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response_generator = execute_received_command,
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allow = RNS.Destination.ALLOW_ALL,
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)
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RNS.log("rnx listening for commands on "+RNS.prettyhexrep(destination.hash))
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if not disable_announce:
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destination.announce()
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while True:
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time.sleep(1)
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def command_link_established(link):
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link.set_remote_identified_callback(initiator_identified)
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link.set_link_closed_callback(command_link_closed)
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RNS.log("Command link "+str(link)+" established")
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def command_link_closed(link):
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RNS.log("Command link "+str(link)+" closed")
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def initiator_identified(link, identity):
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global allow_all
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RNS.log("Initiator of link "+str(link)+" identified as "+RNS.prettyhexrep(identity.hash))
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if not allow_all and not identity.hash in allowed_identity_hashes:
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RNS.log("Identity "+RNS.prettyhexrep(identity.hash)+" not allowed, tearing down link")
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link.teardown()
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def execute_received_command(path, data, request_id, remote_identity, requested_at):
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command = data[0].decode("utf-8") # Command to execute
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timeout = data[1] # Timeout in seconds
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o_limit = data[2] # Size limit for stdout
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e_limit = data[3] # Size limit for stderr
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stdin = data[4] # Data passed to stdin
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if remote_identity != None:
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RNS.log("Executing command ["+command+"] for "+RNS.prettyhexrep(remote_identity.hash))
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else:
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RNS.log("Executing command ["+command+"] for unknown requestor")
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result = [
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False, # 0: Command was executed
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None, # 1: Return value
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None, # 2: Stdout
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None, # 3: Stderr
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None, # 4: Total stdout length
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None, # 5: Total stderr length
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time.time(), # 6: Started
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None, # 7: Concluded
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]
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try:
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process = subprocess.Popen(shlex.split(command), stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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result[0] = True
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except Exception as e:
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result[0] = False
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return result
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stdout = b""
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stderr = b""
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timed_out = False
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if stdin != None:
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process.stdin.write(stdin)
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while True:
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try:
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stdout, stderr = process.communicate(timeout=1)
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if process.poll() != None:
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break
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if len(stdout) > 0:
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print(str(stdout))
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sys.stdout.flush()
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except subprocess.TimeoutExpired:
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pass
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if timeout != None and time.time() > result[6]+timeout:
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RNS.log("Command ["+command+"] timed out and is being killed...")
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process.terminate()
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process.wait()
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if process.poll() != None:
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stdout, stderr = process.communicate()
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else:
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stdout = None
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stderr = None
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break
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if timeout != None and time.time() < result[6]+timeout:
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result[7] = time.time()
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# Deliver result
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result[1] = process.returncode
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if o_limit != None and len(stdout) > o_limit:
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if o_limit == 0:
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result[2] = b""
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else:
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result[2] = stdout[0:o_limit]
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else:
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result[2] = stdout
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if e_limit != None and len(stderr) > e_limit:
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if e_limit == 0:
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result[3] = b""
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else:
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result[3] = stderr[0:e_limit]
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else:
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result[3] = stderr
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result[4] = len(stdout)
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result[5] = len(stderr)
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if timed_out:
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RNS.log("Command timed out")
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return result
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if remote_identity != None:
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RNS.log("Delivering result of command ["+str(command)+"] to "+RNS.prettyhexrep(remote_identity.hash))
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else:
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RNS.log("Delivering result of command ["+str(command)+"] to unknown requestor")
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return result
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def spin(until=None, msg=None, timeout=None):
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i = 0
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syms = "⢄⢂⢁⡁⡈⡐⡠"
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if timeout != None:
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timeout = time.time()+timeout
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print(msg+" ", end=" ")
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while (timeout == None or time.time()<timeout) and not until():
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time.sleep(0.1)
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print(("\b\b"+syms[i]+" "), end="")
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sys.stdout.flush()
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i = (i+1)%len(syms)
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print("\r"+" "*len(msg)+" \r", end="")
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if timeout != None and time.time() > timeout:
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return False
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else:
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return True
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current_progress = 0.0
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stats = []
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speed = 0.0
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def spin_stat(until=None, timeout=None):
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global current_progress, response_transfer_size, speed
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i = 0
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syms = "⢄⢂⢁⡁⡈⡐⡠"
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if timeout != None:
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timeout = time.time()+timeout
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while (timeout == None or time.time()<timeout) and not until():
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time.sleep(0.1)
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prg = current_progress
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percent = round(prg * 100.0, 1)
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stat_str = str(percent)+"% - " + size_str(int(prg*response_transfer_size)) + " of " + size_str(response_transfer_size) + " - " +size_str(speed, "b")+"ps"
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print("\r \rReceiving result "+syms[i]+" "+stat_str, end=" ")
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sys.stdout.flush()
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i = (i+1)%len(syms)
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print("\r \r", end="")
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if timeout != None and time.time() > timeout:
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return False
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else:
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return True
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def remote_execution_done(request_receipt):
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pass
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def remote_execution_progress(request_receipt):
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stats_max = 32
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global current_progress, response_transfer_size, speed
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current_progress = request_receipt.progress
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response_transfer_size = request_receipt.response_transfer_size
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now = time.time()
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got = current_progress*response_transfer_size
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entry = [now, got]
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stats.append(entry)
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while len(stats) > stats_max:
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stats.pop(0)
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span = now - stats[0][0]
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if span == 0:
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speed = 0
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else:
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diff = got - stats[0][1]
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speed = diff/span
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link = None
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listener_destination = None
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remote_exec_grace = 2.0
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def execute(configdir, identitypath = None, verbosity = 0, quietness = 0, detailed = False, mirror = False, noid = False, destination = None, command = None, stdin = None, stdoutl = None, stderrl = None, timeout = RNS.Transport.PATH_REQUEST_TIMEOUT, result_timeout = None, interactive = False):
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global identity, reticulum, link, listener_destination, remote_exec_grace
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try:
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dest_len = (RNS.Reticulum.TRUNCATED_HASHLENGTH//8)*2
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if len(destination) != dest_len:
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raise ValueError("Allowed destination length is invalid, must be {hex} hexadecimal characters ({byte} bytes).".format(hex=dest_len, byte=dest_len//2))
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try:
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destination_hash = bytes.fromhex(destination)
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except Exception as e:
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raise ValueError("Invalid destination entered. Check your input.")
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except Exception as e:
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print(str(e))
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exit(241)
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if reticulum == None:
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targetloglevel = 3+verbosity-quietness
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reticulum = RNS.Reticulum(configdir=configdir, loglevel=targetloglevel)
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if identity == None:
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prepare_identity(identitypath)
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if not RNS.Transport.has_path(destination_hash):
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RNS.Transport.request_path(destination_hash)
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if not spin(until=lambda: RNS.Transport.has_path(destination_hash), msg="Path to "+RNS.prettyhexrep(destination_hash)+" requested", timeout=timeout):
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print("Path not found")
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exit(242)
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if listener_destination == None:
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listener_identity = RNS.Identity.recall(destination_hash)
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listener_destination = RNS.Destination(
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listener_identity,
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RNS.Destination.OUT,
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RNS.Destination.SINGLE,
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APP_NAME,
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"execute"
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)
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if link == None or link.status == RNS.Link.CLOSED or link.status == RNS.Link.PENDING:
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link = RNS.Link(listener_destination)
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link.did_identify = False
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if not spin(until=lambda: link.status == RNS.Link.ACTIVE, msg="Establishing link with "+RNS.prettyhexrep(destination_hash), timeout=timeout):
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print("Could not establish link with "+RNS.prettyhexrep(destination_hash))
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exit(243)
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if not noid and not link.did_identify:
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link.identify(identity)
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link.did_identify = True
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if stdin != None:
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stdin = stdin.encode("utf-8")
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request_data = [
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command.encode("utf-8"), # Command to execute
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timeout, # Timeout in seconds
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stdoutl, # Size limit for stdout
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stderrl, # Size limit for stderr
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stdin, # Data passed to stdin
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]
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# TODO: Tune
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rexec_timeout = timeout+link.rtt*4+remote_exec_grace
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request_receipt = link.request(
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path="command",
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data=request_data,
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response_callback=remote_execution_done,
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failed_callback=remote_execution_done,
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progress_callback=remote_execution_progress,
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timeout=rexec_timeout
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)
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spin(
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until=lambda:link.status == RNS.Link.CLOSED or (request_receipt.status != RNS.RequestReceipt.FAILED and request_receipt.status != RNS.RequestReceipt.SENT),
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msg="Sending execution request",
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timeout=rexec_timeout+0.5
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)
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if link.status == RNS.Link.CLOSED:
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print("Could not request remote execution, link was closed")
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exit(244)
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if request_receipt.status == RNS.RequestReceipt.FAILED:
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print("Could not request remote execution")
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if interactive:
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return
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else:
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exit(244)
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spin(
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until=lambda:request_receipt.status != RNS.RequestReceipt.DELIVERED,
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msg="Command delivered, awaiting result",
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timeout=timeout
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)
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if request_receipt.status == RNS.RequestReceipt.FAILED:
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print("No result was received")
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if interactive:
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return
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else:
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exit(245)
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spin_stat(
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until=lambda:request_receipt.status != RNS.RequestReceipt.RECEIVING,
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timeout=result_timeout
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)
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if request_receipt.status == RNS.RequestReceipt.FAILED:
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print("Receiving result failed")
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if interactive:
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return
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else:
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exit(246)
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if request_receipt.response != None:
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try:
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executed = request_receipt.response[0]
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retval = request_receipt.response[1]
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stdout = request_receipt.response[2]
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stderr = request_receipt.response[3]
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outlen = request_receipt.response[4]
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errlen = request_receipt.response[5]
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started = request_receipt.response[6]
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concluded = request_receipt.response[7]
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except Exception as e:
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print("Received invalid result")
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if interactive:
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return
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else:
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exit(247)
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if executed:
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if detailed:
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if stdout != None and len(stdout) > 0:
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print(stdout.decode("utf-8"), end="")
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if stderr != None and len(stderr) > 0:
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print(stderr.decode("utf-8"), file=sys.stderr, end="")
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sys.stdout.flush()
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sys.stderr.flush()
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print("\n--- End of remote output, rnx done ---")
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if started != None and concluded != None:
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cmd_duration = round(concluded - started, 3)
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print("Remote command execution took "+str(cmd_duration)+" seconds")
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total_size = request_receipt.response_size
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if request_receipt.request_size != None:
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total_size += request_receipt.request_size
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transfer_duration = round(request_receipt.response_concluded_at - request_receipt.sent_at - cmd_duration, 3)
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if transfer_duration == 1:
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tdstr = " in 1 second"
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elif transfer_duration < 10:
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tdstr = " in "+str(transfer_duration)+" seconds"
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else:
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tdstr = " in "+pretty_time(transfer_duration)
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spdstr = ", effective rate "+size_str(total_size/transfer_duration, "b")+"ps"
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print("Transferred "+size_str(total_size)+tdstr+spdstr)
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if outlen != None and stdout != None:
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if len(stdout) < outlen:
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tstr = ", "+str(len(stdout))+" bytes displayed"
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else:
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tstr = ""
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print("Remote wrote "+str(outlen)+" bytes to stdout"+tstr)
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if errlen != None and stderr != None:
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if len(stderr) < errlen:
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tstr = ", "+str(len(stderr))+" bytes displayed"
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else:
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tstr = ""
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print("Remote wrote "+str(errlen)+" bytes to stderr"+tstr)
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else:
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if stdout != None and len(stdout) > 0:
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print(stdout.decode("utf-8"), end="")
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if stderr != None and len(stderr) > 0:
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print(stderr.decode("utf-8"), file=sys.stderr, end="")
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if (stdoutl != 0 and len(stdout) < outlen) or (stderrl != 0 and len(stderr) < errlen):
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sys.stdout.flush()
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sys.stderr.flush()
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print("\nOutput truncated before being returned:")
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if len(stdout) != 0 and len(stdout) < outlen:
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print(" stdout truncated to "+str(len(stdout))+" bytes")
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if len(stderr) != 0 and len(stderr) < errlen:
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print(" stderr truncated to "+str(len(stderr))+" bytes")
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else:
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print("Remote could not execute command")
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if interactive:
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return
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else:
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exit(248)
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else:
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print("No response")
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if interactive:
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return
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else:
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exit(249)
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try:
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if not interactive:
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link.teardown()
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except Exception as e:
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pass
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if not interactive and mirror:
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if request_receipt.response[1] != None:
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exit(request_receipt.response[1])
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else:
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exit(240)
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else:
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if interactive:
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if mirror:
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return request_receipt.response[1]
|
|
else:
|
|
return None
|
|
else:
|
|
exit(0)
|
|
|
|
def main():
|
|
try:
|
|
parser = argparse.ArgumentParser(description="Reticulum Remote Execution Utility")
|
|
parser.add_argument("destination", nargs="?", default=None, help="hexadecimal hash of the listener", type=str)
|
|
parser.add_argument("command", nargs="?", default=None, help="command to be execute", type=str)
|
|
parser.add_argument("--config", metavar="path", action="store", default=None, help="path to alternative Reticulum config directory", type=str)
|
|
parser.add_argument('-v', '--verbose', action='count', default=0, help="increase verbosity")
|
|
parser.add_argument('-q', '--quiet', action='count', default=0, help="decrease verbosity")
|
|
parser.add_argument('-p', '--print-identity', action='store_true', default=False, help="print identity and destination info and exit")
|
|
parser.add_argument("-l", '--listen', action='store_true', default=False, help="listen for incoming commands")
|
|
parser.add_argument('-i', metavar="identity", action='store', dest="identity", default=None, help="path to identity to use", type=str)
|
|
parser.add_argument("-x", '--interactive', action='store_true', default=False, help="enter interactive mode")
|
|
parser.add_argument("-b", '--no-announce', action='store_true', default=False, help="don't announce at program start")
|
|
parser.add_argument('-a', metavar="allowed_hash", dest="allowed", action='append', help="accept from this identity", type=str)
|
|
parser.add_argument('-n', '--noauth', action='store_true', default=False, help="accept commands from anyone")
|
|
parser.add_argument('-N', '--noid', action='store_true', default=False, help="don't identify to listener")
|
|
parser.add_argument("-d", '--detailed', action='store_true', default=False, help="show detailed result output")
|
|
parser.add_argument("-m", action='store_true', dest="mirror", default=False, help="mirror exit code of remote command")
|
|
parser.add_argument("-w", action="store", metavar="seconds", type=float, help="connect and request timeout before giving up", default=RNS.Transport.PATH_REQUEST_TIMEOUT)
|
|
parser.add_argument("-W", action="store", metavar="seconds", type=float, help="max result download time", default=None)
|
|
parser.add_argument("--stdin", action='store', default=None, help="pass input to stdin", type=str)
|
|
parser.add_argument("--stdout", action='store', default=None, help="max size in bytes of returned stdout", type=int)
|
|
parser.add_argument("--stderr", action='store', default=None, help="max size in bytes of returned stderr", type=int)
|
|
parser.add_argument("--version", action="version", version="rnx {version}".format(version=__version__))
|
|
|
|
args = parser.parse_args()
|
|
|
|
if args.listen or args.print_identity:
|
|
listen(
|
|
configdir = args.config,
|
|
identitypath = args.identity,
|
|
verbosity=args.verbose,
|
|
quietness=args.quiet,
|
|
allowed = args.allowed,
|
|
print_identity=args.print_identity,
|
|
disable_auth=args.noauth,
|
|
disable_announce=args.no_announce,
|
|
)
|
|
|
|
elif args.destination != None and args.command != None:
|
|
execute(
|
|
configdir = args.config,
|
|
identitypath = args.identity,
|
|
verbosity = args.verbose,
|
|
quietness = args.quiet,
|
|
detailed = args.detailed,
|
|
mirror = args.mirror,
|
|
noid = args.noid,
|
|
destination = args.destination,
|
|
command = args.command,
|
|
stdin = args.stdin,
|
|
stdoutl = args.stdout,
|
|
stderrl = args.stderr,
|
|
timeout = args.w,
|
|
result_timeout = args.W,
|
|
interactive = args.interactive,
|
|
)
|
|
|
|
if args.destination != None and args.interactive:
|
|
# command_history_max = 5000
|
|
# command_history = []
|
|
# command_current = ""
|
|
# history_idx = 0
|
|
# tty.setcbreak(sys.stdin.fileno())
|
|
|
|
code = None
|
|
while True:
|
|
try:
|
|
cstr = str(code) if code and code != 0 else ""
|
|
prompt = cstr+"> "
|
|
print(prompt,end="")
|
|
|
|
# cmdbuf = b""
|
|
# while True:
|
|
# ch = sys.stdin.read(1)
|
|
# cmdbuf += ch.encode("utf-8")
|
|
# print("\r"+prompt+cmdbuf.decode("utf-8"), end="")
|
|
|
|
command = input()
|
|
if command.lower() == "exit" or command.lower() == "quit":
|
|
exit(0)
|
|
|
|
except KeyboardInterrupt:
|
|
exit(0)
|
|
except EOFError:
|
|
exit(0)
|
|
|
|
if command.lower() == "clear":
|
|
print('\033c', end='')
|
|
|
|
# command_history.append(command)
|
|
# while len(command_history) > command_history_max:
|
|
# command_history.pop(0)
|
|
|
|
else:
|
|
code = execute(
|
|
configdir = args.config,
|
|
identitypath = args.identity,
|
|
verbosity = args.verbose,
|
|
quietness = args.quiet,
|
|
detailed = args.detailed,
|
|
mirror = args.mirror,
|
|
noid = args.noid,
|
|
destination = args.destination,
|
|
command = command,
|
|
stdin = None,
|
|
stdoutl = args.stdout,
|
|
stderrl = args.stderr,
|
|
timeout = args.w,
|
|
result_timeout = args.W,
|
|
interactive = True,
|
|
)
|
|
|
|
else:
|
|
print("")
|
|
parser.print_help()
|
|
print("")
|
|
|
|
except KeyboardInterrupt:
|
|
# tty.setnocbreak(sys.stdin.fileno())
|
|
print("")
|
|
if link != None:
|
|
link.teardown()
|
|
exit()
|
|
|
|
def size_str(num, suffix='B'):
|
|
units = ['','K','M','G','T','P','E','Z']
|
|
last_unit = 'Y'
|
|
|
|
if suffix == 'b':
|
|
num *= 8
|
|
units = ['','K','M','G','T','P','E','Z']
|
|
last_unit = 'Y'
|
|
|
|
for unit in units:
|
|
if abs(num) < 1000.0:
|
|
if unit == "":
|
|
return "%.0f %s%s" % (num, unit, suffix)
|
|
else:
|
|
return "%.2f %s%s" % (num, unit, suffix)
|
|
num /= 1000.0
|
|
|
|
return "%.2f%s%s" % (num, last_unit, suffix)
|
|
|
|
def pretty_time(time, verbose=False):
|
|
days = int(time // (24 * 3600))
|
|
time = time % (24 * 3600)
|
|
hours = int(time // 3600)
|
|
time %= 3600
|
|
minutes = int(time // 60)
|
|
time %= 60
|
|
seconds = round(time, 2)
|
|
|
|
ss = "" if seconds == 1 else "s"
|
|
sm = "" if minutes == 1 else "s"
|
|
sh = "" if hours == 1 else "s"
|
|
sd = "" if days == 1 else "s"
|
|
|
|
components = []
|
|
if days > 0:
|
|
components.append(str(days)+" day"+sd if verbose else str(days)+"d")
|
|
|
|
if hours > 0:
|
|
components.append(str(hours)+" hour"+sh if verbose else str(hours)+"h")
|
|
|
|
if minutes > 0:
|
|
components.append(str(minutes)+" minute"+sm if verbose else str(minutes)+"m")
|
|
|
|
if seconds > 0:
|
|
components.append(str(seconds)+" second"+ss if verbose else str(seconds)+"s")
|
|
|
|
i = 0
|
|
tstr = ""
|
|
for c in components:
|
|
i += 1
|
|
if i == 1:
|
|
pass
|
|
elif i < len(components):
|
|
tstr += ", "
|
|
elif i == len(components):
|
|
tstr += " and "
|
|
|
|
tstr += c
|
|
|
|
return tstr
|
|
|
|
if __name__ == "__main__":
|
|
main()
|