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annotate contrib/automation/hgautomation/ssh.py @ 53040:cdd7bf612c7b stable tip

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bundle-spec: properly format boolean parameter (issue6960) This was breaking automatic clone bundle generation. This changeset fixes it and add a test to catch it in the future.
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Tue, 11 Mar 2025 02:29:42 +0100
parents 24ee91ba9aa8
children
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1 # ssh.py - Interact with remote SSH servers
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2 #
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3 # Copyright 2019 Gregory Szorc <gregory.szorc@gmail.com>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 # no-check-code because Python 3 native.
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9
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10 import socket
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11 import time
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12 import warnings
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13
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14 from cryptography.utils import CryptographyDeprecationWarning
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15 import paramiko
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16
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17
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18 def wait_for_ssh(hostname, port, timeout=60, username=None, key_filename=None):
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19 """Wait for an SSH server to start on the specified host and port."""
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20
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21 class IgnoreHostKeyPolicy(paramiko.MissingHostKeyPolicy):
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22 def missing_host_key(self, client, hostname, key):
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23 return
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24
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25 end_time = time.time() + timeout
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26
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27 # paramiko triggers a CryptographyDeprecationWarning in the cryptography
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28 # package. Let's suppress
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29 with warnings.catch_warnings():
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30 warnings.filterwarnings(
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31 'ignore', category=CryptographyDeprecationWarning
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32 )
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33
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34 while True:
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35 client = paramiko.SSHClient()
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36 client.set_missing_host_key_policy(IgnoreHostKeyPolicy())
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37 try:
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38 client.connect(
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39 hostname,
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40 port=port,
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41 username=username,
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42 key_filename=key_filename,
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43 timeout=5.0,
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44 allow_agent=False,
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45 look_for_keys=False,
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46 )
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47
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48 return client
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49 except OSError:
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50 pass
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51 except paramiko.AuthenticationException:
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52 raise
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53 except paramiko.SSHException:
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54 pass
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55
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56 if time.time() >= end_time:
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57 raise Exception('Timeout reached waiting for SSH')
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58
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59 time.sleep(1.0)
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60
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61
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62 def exec_command(client, command):
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63 """exec_command wrapper that combines stderr/stdout and returns channel"""
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64 chan = client.get_transport().open_session()
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65
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66 chan.exec_command(command)
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67 chan.set_combine_stderr(True)
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68
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69 stdin = chan.makefile('wb', -1)
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70 stdout = chan.makefile('r', -1)
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71
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72 return chan, stdin, stdout