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win32: add a method to trigger the Crypto API to complete a certificate chain...
win32: add a method to trigger the Crypto API to complete a certificate chain I started a thread[1] on the mailing list awhile ago, but the short version is that Windows doesn't ship with a full list of certificates[2]. Even if the server sends the whole chain, if Windows doesn't have the appropriate certificate pre-installed in its "Third-Party Root Certification Authorities" store, connections mysteriously fail with: abort: error: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:661) Windows expects the application to call the methods invoked here as part of the certificate verification, triggering a call out to Windows update if necessary, to complete the trust chain. The python bug to add this support[3] hasn't had any recent activity, and isn't targeting py27 anyway. The only work around that I could find (besides figuring out the certificate and walking through the import wizard) is to browse to the site in Internet Explorer. Opening the page with FireFox or Chrome didn't work. That's a pretty obscure way to fix a pretty obscure problem. We go to great lengths to demystify various SSL errors, but this case is clearly lacking. Let's try to make things easier to diagnose and fix. When I had trouble figuring out how to get ctypes to work with all of the API pointers, I found that there are other python projects[4] using this API to achieve the same thing. [1] https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-April/096501.html [2] https://support.microsoft.com/en-us/help/931125/how-to-get-a-root-certificate-update-for-windows [3] https://bugs.python.org/issue20916 [4] https://github.com/nvaccess/nvda/blob/3b86bce2066b1934df14b96f2e83369900860ecf/source/updateCheck.py#L511

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amend.py
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# amend.py - provide the amend command
#
# Copyright 2017 Facebook, Inc.
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
"""provide the amend command (EXPERIMENTAL)
This extension provides an ``amend`` command that is similar to
``commit --amend`` but does not prompt an editor.
"""
from __future__ import absolute_import
from mercurial.i18n import _
from mercurial import (
cmdutil,
commands,
registrar,
)
# Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
# extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
# be specifying the version(s) of Mercurial they are tested with, or
# leave the attribute unspecified.
testedwith = 'ships-with-hg-core'
cmdtable = {}
command = registrar.command(cmdtable)
@command('amend',
[('A', 'addremove', None,
_('mark new/missing files as added/removed before committing')),
('e', 'edit', None, _('invoke editor on commit messages')),
('i', 'interactive', None, _('use interactive mode')),
] + cmdutil.walkopts + cmdutil.commitopts + cmdutil.commitopts2,
_('[OPTION]... [FILE]...'),
inferrepo=True)
def amend(ui, repo, *pats, **opts):
"""amend the working copy parent with all or specified outstanding changes
Similar to :hg:`commit --amend`, but reuse the commit message without
invoking editor, unless ``--edit`` was set.
See :hg:`help commit` for more details.
"""
with repo.wlock(), repo.lock():
if not opts.get('logfile'):
opts['message'] = opts.get('message') or repo['.'].description()
opts['amend'] = True
return commands._docommit(ui, repo, *pats, **opts)