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-rw-r--r--lib/python2.7/getpass.py179
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diff --git a/lib/python2.7/getpass.py b/lib/python2.7/getpass.py
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--- a/lib/python2.7/getpass.py
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-"""Utilities to get a password and/or the current user name.
-
-getpass(prompt[, stream]) - Prompt for a password, with echo turned off.
-getuser() - Get the user name from the environment or password database.
-
-GetPassWarning - This UserWarning is issued when getpass() cannot prevent
- echoing of the password contents while reading.
-
-On Windows, the msvcrt module will be used.
-On the Mac EasyDialogs.AskPassword is used, if available.
-
-"""
-
-# Authors: Piers Lauder (original)
-# Guido van Rossum (Windows support and cleanup)
-# Gregory P. Smith (tty support & GetPassWarning)
-
-import os, sys, warnings
-
-__all__ = ["getpass","getuser","GetPassWarning"]
-
-
-class GetPassWarning(UserWarning): pass
-
-
-def unix_getpass(prompt='Password: ', stream=None):
- """Prompt for a password, with echo turned off.
-
- Args:
- prompt: Written on stream to ask for the input. Default: 'Password: '
- stream: A writable file object to display the prompt. Defaults to
- the tty. If no tty is available defaults to sys.stderr.
- Returns:
- The seKr3t input.
- Raises:
- EOFError: If our input tty or stdin was closed.
- GetPassWarning: When we were unable to turn echo off on the input.
-
- Always restores terminal settings before returning.
- """
- fd = None
- tty = None
- try:
- # Always try reading and writing directly on the tty first.
- fd = os.open('/dev/tty', os.O_RDWR|os.O_NOCTTY)
- tty = os.fdopen(fd, 'w+', 1)
- input = tty
- if not stream:
- stream = tty
- except EnvironmentError, e:
- # If that fails, see if stdin can be controlled.
- try:
- fd = sys.stdin.fileno()
- except (AttributeError, ValueError):
- passwd = fallback_getpass(prompt, stream)
- input = sys.stdin
- if not stream:
- stream = sys.stderr
-
- if fd is not None:
- passwd = None
- try:
- old = termios.tcgetattr(fd) # a copy to save
- new = old[:]
- new[3] &= ~termios.ECHO # 3 == 'lflags'
- tcsetattr_flags = termios.TCSAFLUSH
- if hasattr(termios, 'TCSASOFT'):
- tcsetattr_flags |= termios.TCSASOFT
- try:
- termios.tcsetattr(fd, tcsetattr_flags, new)
- passwd = _raw_input(prompt, stream, input=input)
- finally:
- termios.tcsetattr(fd, tcsetattr_flags, old)
- stream.flush() # issue7208
- except termios.error, e:
- if passwd is not None:
- # _raw_input succeeded. The final tcsetattr failed. Reraise
- # instead of leaving the terminal in an unknown state.
- raise
- # We can't control the tty or stdin. Give up and use normal IO.
- # fallback_getpass() raises an appropriate warning.
- del input, tty # clean up unused file objects before blocking
- passwd = fallback_getpass(prompt, stream)
-
- stream.write('\n')
- return passwd
-
-
-def win_getpass(prompt='Password: ', stream=None):
- """Prompt for password with echo off, using Windows getch()."""
- if sys.stdin is not sys.__stdin__:
- return fallback_getpass(prompt, stream)
- import msvcrt
- for c in prompt:
- msvcrt.putch(c)
- pw = ""
- while 1:
- c = msvcrt.getch()
- if c == '\r' or c == '\n':
- break
- if c == '\003':
- raise KeyboardInterrupt
- if c == '\b':
- pw = pw[:-1]
- else:
- pw = pw + c
- msvcrt.putch('\r')
- msvcrt.putch('\n')
- return pw
-
-
-def fallback_getpass(prompt='Password: ', stream=None):
- warnings.warn("Can not control echo on the terminal.", GetPassWarning,
- stacklevel=2)
- if not stream:
- stream = sys.stderr
- print >>stream, "Warning: Password input may be echoed."
- return _raw_input(prompt, stream)
-
-
-def _raw_input(prompt="", stream=None, input=None):
- # A raw_input() replacement that doesn't save the string in the
- # GNU readline history.
- if not stream:
- stream = sys.stderr
- if not input:
- input = sys.stdin
- prompt = str(prompt)
- if prompt:
- stream.write(prompt)
- stream.flush()
- # NOTE: The Python C API calls flockfile() (and unlock) during readline.
- line = input.readline()
- if not line:
- raise EOFError
- if line[-1] == '\n':
- line = line[:-1]
- return line
-
-
-def getuser():
- """Get the username from the environment or password database.
-
- First try various environment variables, then the password
- database. This works on Windows as long as USERNAME is set.
-
- """
-
- import os
-
- for name in ('LOGNAME', 'USER', 'LNAME', 'USERNAME'):
- user = os.environ.get(name)
- if user:
- return user
-
- # If this fails, the exception will "explain" why
- import pwd
- return pwd.getpwuid(os.getuid())[0]
-
-# Bind the name getpass to the appropriate function
-try:
- import termios
- # it's possible there is an incompatible termios from the
- # McMillan Installer, make sure we have a UNIX-compatible termios
- termios.tcgetattr, termios.tcsetattr
-except (ImportError, AttributeError):
- try:
- import msvcrt
- except ImportError:
- try:
- from EasyDialogs import AskPassword
- except ImportError:
- getpass = fallback_getpass
- else:
- getpass = AskPassword
- else:
- getpass = win_getpass
-else:
- getpass = unix_getpass