Mercurial > hg
annotate tests/sshprotoext.py @ 36404:6905c4ec312c
histedit: use ctx.rev() instead of %d % ctx
Weaning off basectx.__int__.
Differential Revision: https://phab.mercurial-scm.org/D2426
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Sat, 24 Feb 2018 10:53:47 -0800 |
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1 # sshprotoext.py - Extension to test behavior of SSH protocol |
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2 # |
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3 # Copyright 2018 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 # This extension replaces the SSH server started via `hg serve --stdio`. |
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9 # The server behaves differently depending on environment variables. |
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10 |
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11 from __future__ import absolute_import |
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12 |
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13 from mercurial import ( |
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14 error, |
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15 extensions, |
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16 registrar, |
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17 sshpeer, |
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18 wireproto, |
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19 wireprotoserver, |
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20 ) |
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21 |
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22 configtable = {} |
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23 configitem = registrar.configitem(configtable) |
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24 |
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25 configitem(b'sshpeer', b'mode', default=None) |
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26 configitem(b'sshpeer', b'handshake-mode', default=None) |
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27 |
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28 class bannerserver(wireprotoserver.sshserver): |
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29 """Server that sends a banner to stdout.""" |
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30 def serve_forever(self): |
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31 for i in range(10): |
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32 self._fout.write(b'banner: line %d\n' % i) |
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33 |
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34 super(bannerserver, self).serve_forever() |
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35 |
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36 class prehelloserver(wireprotoserver.sshserver): |
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37 """Tests behavior when connecting to <0.9.1 servers. |
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38 |
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39 The ``hello`` wire protocol command was introduced in Mercurial |
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40 0.9.1. Modern clients send the ``hello`` command when connecting |
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41 to SSH servers. This mock server tests behavior of the handshake |
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42 when ``hello`` is not supported. |
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43 """ |
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44 def serve_forever(self): |
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45 l = self._fin.readline() |
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46 assert l == b'hello\n' |
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47 # Respond to unknown commands with an empty reply. |
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48 wireprotoserver._sshv1respondbytes(self._fout, b'') |
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49 l = self._fin.readline() |
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50 assert l == b'between\n' |
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51 proto = wireprotoserver.sshv1protocolhandler(self._ui, self._fin, |
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52 self._fout) |
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53 rsp = wireproto.dispatch(self._repo, proto, b'between') |
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54 wireprotoserver._sshv1respondbytes(self._fout, rsp.data) |
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55 |
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56 super(prehelloserver, self).serve_forever() |
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57 |
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58 def performhandshake(orig, ui, stdin, stdout, stderr): |
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59 """Wrapped version of sshpeer._performhandshake to send extra commands.""" |
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60 mode = ui.config(b'sshpeer', b'handshake-mode') |
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61 if mode == b'pre-no-args': |
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62 ui.debug(b'sending no-args command\n') |
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63 stdin.write(b'no-args\n') |
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64 stdin.flush() |
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65 return orig(ui, stdin, stdout, stderr) |
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66 elif mode == b'pre-multiple-no-args': |
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67 ui.debug(b'sending unknown1 command\n') |
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68 stdin.write(b'unknown1\n') |
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69 ui.debug(b'sending unknown2 command\n') |
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70 stdin.write(b'unknown2\n') |
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71 ui.debug(b'sending unknown3 command\n') |
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72 stdin.write(b'unknown3\n') |
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73 stdin.flush() |
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74 return orig(ui, stdin, stdout, stderr) |
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75 else: |
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76 raise error.ProgrammingError(b'unknown HANDSHAKECOMMANDMODE: %s' % |
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77 mode) |
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78 |
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79 def extsetup(ui): |
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80 # It's easier for tests to define the server behavior via environment |
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81 # variables than config options. This is because `hg serve --stdio` |
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82 # has to be invoked with a certain form for security reasons and |
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83 # `dummyssh` can't just add `--config` flags to the command line. |
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84 servermode = ui.environ.get(b'SSHSERVERMODE') |
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85 |
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86 if servermode == b'banner': |
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87 wireprotoserver.sshserver = bannerserver |
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88 elif servermode == b'no-hello': |
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89 wireprotoserver.sshserver = prehelloserver |
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90 elif servermode: |
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91 raise error.ProgrammingError(b'unknown server mode: %s' % servermode) |
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92 |
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93 peermode = ui.config(b'sshpeer', b'mode') |
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94 |
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95 if peermode == b'extra-handshake-commands': |
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96 extensions.wrapfunction(sshpeer, '_performhandshake', performhandshake) |
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97 elif peermode: |
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98 raise error.ProgrammingError(b'unknown peer mode: %s' % peermode) |