Mercurial > dropbear

annotate test/test_dropbear.py @ 1912:8b4274d34fe8

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Use buf_burn_free() instead of two calls
author Matt Johnston <matt@ucc.asn.au>
date Tue, 29 Mar 2022 23:47:30 +0800
parents 81991ded740f
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 import subprocess
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2 import os
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3 import pty
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4 import tempfile
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5 import logging
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6 import time
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7 import socketserver
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8 import threading
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9 import queue
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10
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11 import pytest
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12
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13 LOCALADDR="127.0.5.5"
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14
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15 @pytest.fixture(scope="module")
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16 def dropbear(request):
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17 opt = request.config.option
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18 if opt.remote:
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19 yield None
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20 return
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21
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22 # split so that "dropbearmulti dropbear" works
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23 args = opt.dropbear.split() + [
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24 "-p", LOCALADDR, # bind locally only
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25 "-r", opt.hostkey,
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26 "-p", opt.port,
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27 "-F", "-E",
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28 ]
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29 p = subprocess.Popen(args, stderr=subprocess.PIPE, text=True)
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30 # Wait until it has started listening
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31 for l in p.stderr:
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32 if "Not backgrounding" in l:
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33 break
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34 # Check it's still running
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35 assert p.poll() is None
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36 # Ready
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37 yield p
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38 p.terminate()
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39 print("Terminated dropbear. Flushing output:")
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40 for l in p.stderr:
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41 print(l.rstrip())
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42 print("Done")
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43
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44 def dbclient(request, *args, **kwargs):
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45 opt = request.config.option
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46 host = opt.remote or LOCALADDR
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47 # split so that "dropbearmulti dbclient" works
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48 base_args = opt.dbclient.split() + ["-y", host, "-p", opt.port]
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49 if opt.user:
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50 base_args.extend(['-l', opt.user])
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51 full_args = base_args + list(args)
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52 bg = kwargs.get("background")
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53 if "background" in kwargs:
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54 del kwargs["background"]
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55 if bg:
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56 return subprocess.Popen(full_args, **kwargs)
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57 else:
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58 kwargs.setdefault("timeout", 10)
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59 # wait for response
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60 return subprocess.run(full_args, **kwargs)
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61
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62 def own_venv_command():
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63 """ Returns a command to run as a prefix to get the same venv
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64 as the current running Python. Returns '' on not a virtualenv
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65 """
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66 try:
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67 venv = os.environ['VIRTUAL_ENV']
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68 except KeyError:
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69 return ""
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70
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71 # note: bash/zsh unix specific
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72 return f"source {venv}/bin/activate"
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73
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74 class HandleTcp(socketserver.ThreadingMixIn, socketserver.TCPServer):
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75
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76 # override TCPServer's default, avoids TIME_WAIT
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77 allow_reuse_addr = True
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78
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79 """ Listens for a single incoming request, sends a response if given,
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80 and returns the inbound data.
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81 Reponse can be a queue object, in which case each item in the queue will
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82 be sent as a response, until it receives a None item.
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83 """
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84 def __init__(self, port, timeout, response=None):
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85 super().__init__(('localhost', port), self.Handler)
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86 self.port = port
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87 self.timeout = timeout
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88 self.response = response
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89 self.sink = None
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90
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91 class Handler(socketserver.StreamRequestHandler):
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92 def handle(self):
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93 if isinstance(self.server.response, queue.Queue):
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94 while True:
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95 i = self.server.response.get()
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96 if i is None:
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97 break
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98 self.wfile.write(i)
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99 elif self.server.response:
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100 self.wfile.write(self.server.response)
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101 assert self.server.sink is None, ">1 request sent to handler"
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102 self.server.sink = self.rfile.read()
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103
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104 def __enter__(self):
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105 self.server_thread = threading.Thread(target=self.serve_forever)
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106 self.server_thread.daemon = True
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107 self.server_thread.start()
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108 return self
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109
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110 def __exit__(self, *exc_stuff):
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111 self.shutdown()
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112 self.server_thread.join()
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113
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114 def inbound(self):
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115 """ Returns the data sent to the socket """
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116 return self.sink
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117
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118 def readall_socket(sock):
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119 b = []
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120 while True:
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121 i = sock.recv(4096)
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122 if not i:
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123 break
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124 b.append(i)
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125 return b''.join(b)
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126
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127 # returns a str
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128 def random_alnum(size):
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129 r = os.urandom(500 + size*5)
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130 return bytes(i for i in r if bytes((i,)).isalnum())[:size].decode()
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131
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