upstream/mercurial-mirror Files · contrib/automation/hgautomation/__init__.py

util: avoid echoing the password to the console on Windows py3 (issue6446)...

util: avoid echoing the password to the console on Windows py3 (issue6446) The `getpass.getpass()` implementation on Windows first checks if `sys.stdin` and `sys.__stdin__` are the same object. It's not on py3 because the former is replaced in dispatch.py with something that doesn't normalize '\n' to '\r\n'. When they aren't the same object, it simply calls `sys.stdin.readline()` instead of the mscvrt functions that read the input characters before they are echoed. This simply copies the `getpass.win_getpass()` implementation without the stdin check, and byteifies around the edges. I'm not sure if there's a reasonable replacement for the check that we could implement. When echoing input into the hg command, the `ui.interactive()` check causes `ui.getpass()` to bail before getting here. If the proper config switches are used to bypass that and call this, the process stalls until '\n' is input into the console. So there could be a deadlock here when run by another command if the wrong config settings are applied. Differential Revision: https://phab.mercurial-scm.org/D10708

Augie Fackler - - Load All Authors

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      # __init__.py - High-level automation interfaces

      #

      # Copyright 2019 Gregory Szorc <gregory.szorc@gmail.com>

      #

      # This software may be used and distributed according to the terms of the

      # GNU General Public License version 2 or any later version.

      # no-check-code because Python 3 native.

      import pathlib

      import secrets

      from .aws import AWSConnection

      class HGAutomation:

          """High-level interface for Mercurial automation.

          Holds global state, provides access to other primitives, etc.

          """

          def __init__(self, state_path: pathlib.Path):

              self.state_path = state_path

              state_path.mkdir(exist_ok=True)

          def default_password(self):

              """Obtain the default password to use for remote machines.

              A new password will be generated if one is not stored.

              """

              p = self.state_path / 'default-password'

              try:

                  with p.open('r', encoding='ascii') as fh:

                      data = fh.read().strip()

                      if data:

                          return data

              except FileNotFoundError:

                  pass

              password = secrets.token_urlsafe(24)

              with p.open('w', encoding='ascii') as fh:

                  fh.write(password)

                  fh.write('\n')

              p.chmod(0o0600)

              return password

          def aws_connection(self, region: str, ensure_ec2_state: bool = True):

              """Obtain an AWSConnection instance bound to a specific region."""

              return AWSConnection(self, region, ensure_ec2_state=ensure_ec2_state)

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				# __init__.py - High-level automation interfaces
				#
				# Copyright 2019 Gregory Szorc <gregory.szorc@gmail.com>
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.

				# no-check-code because Python 3 native.

				import pathlib
				import secrets

				from .aws import AWSConnection


				class HGAutomation:
				"""High-level interface for Mercurial automation.

				Holds global state, provides access to other primitives, etc.
				"""

				def __init__(self, state_path: pathlib.Path):
				self.state_path = state_path

				state_path.mkdir(exist_ok=True)

				def default_password(self):
				"""Obtain the default password to use for remote machines.

				A new password will be generated if one is not stored.
				"""
				p = self.state_path / 'default-password'

				try:
				with p.open('r', encoding='ascii') as fh:
				data = fh.read().strip()

				if data:
				return data

				except FileNotFoundError:
				pass

				password = secrets.token_urlsafe(24)

				with p.open('w', encoding='ascii') as fh:
				fh.write(password)
				fh.write('\n')

				p.chmod(0o0600)

				return password

				def aws_connection(self, region: str, ensure_ec2_state: bool = True):
				"""Obtain an AWSConnection instance bound to a specific region."""

				return AWSConnection(self, region, ensure_ec2_state=ensure_ec2_state)