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#!/usr/bin/env python3
import argparse
import os
import random
import socket
import sys
from ssh import *
def make_connections(n):
connections = []
for _ in range(n):
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
s.connect(os.environ["SSH_AUTH_SOCK"])
connections.append(s)
return connections
def use_connection(s, idstring):
print("Trying {}...".format(idstring), end="")
sys.stdout.flush()
s.send(ssh_string(ssh_byte(SSH2_AGENTC_EXTENSION) + ssh_string(
b"nonexistent-agent-extension@putty.projects.tartarus.org")))
length = ssh_decode_uint32(s.recv(4))
assert length < AGENT_MAX_MSGLEN
msg = s.recv(length)
msgtype = msg[0]
msgstring = (
"SSH_AGENT_EXTENSION_FAILURE" if msgtype == SSH_AGENT_EXTENSION_FAILURE
else "SSH_AGENT_FAILURE" if msgtype == SSH_AGENT_FAILURE
else "type {:d}".format(msgtype))
print("got", msgstring, "with {:d}-byte payload".format(len(msg)-1))
def randomly_use_connections(connections, iterations):
for _ in range(iterations):
index = random.randrange(0, len(connections))
s = connections[index]
use_connection(connections[index], "#{:d}".format(index))
def main():
parser = argparse.ArgumentParser(
description='Test handling of multiple agent connections.')
parser.add_argument("--nsockets", type=int, default=128,
help="Number of simultaneous connections to make.")
parser.add_argument("--ntries", type=int, default=1024,
help="Number of messages to send in total.")
args = parser.parse_args()
connections = make_connections(args.nsockets)
randomly_use_connections(connections, args.ntries)
if __name__ == '__main__':
main()
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