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print a warning if the password will be echoed.

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At import time, getpass will be bound to the appropriate
platform-specific function.  If the platform's echo-disabler is not
available, default_getpass, which prints the warning, will be used
This commit is contained in:
Jeremy Hylton 1999-10-18 22:25:22 +00:00
parent f8d8e07601
commit 88d23309e9
1 changed files with 26 additions and 22 deletions
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48
Lib/getpass.py
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@ -3,43 +3,27 @@
getpass(prompt) - prompt for a password, with echo turned off getpass(prompt) - prompt for a password, with echo turned off
getuser() - get the user name from the environment or password database getuser() - get the user name from the environment or password database
On Windows, the msvcrt module will be used.
On the Mac EasyDialogs.AskPassword is used, if available.
Authors: Piers Lauder (original) Authors: Piers Lauder (original)
Guido van Rossum (Windows support and cleanup) Guido van Rossum (Windows support and cleanup)
""" """
import sys
def getpass(prompt='Password: '): def unix_getpass(prompt='Password: '):
"""Prompt for a password, with echo turned off. """Prompt for a password, with echo turned off.
Restore terminal settings at end. Restore terminal settings at end.
On Windows, this calls win_getpass(prompt) which uses the
msvcrt module to get the same effect.
On the Mac EasyDialogs.AskPassword is used, if available.
""" """
import sys
try: try:
fd = sys.stdin.fileno() fd = sys.stdin.fileno()
except: except:
return default_getpass(prompt) return default_getpass(prompt)
try:
import termios, TERMIOS
except ImportError:
try:
import msvcrt
except ImportError:
try:
from EasyDialogs import AskPassword
except ImportError:
return default_getpass(prompt)
else:
return AskPassword(prompt)
else:
return win_getpass(prompt)
getpass = default_getpass
old = termios.tcgetattr(fd) # a copy to save old = termios.tcgetattr(fd) # a copy to save
new = old[:] new = old[:]
@ -76,6 +60,7 @@ def win_getpass(prompt='Password: '):
def default_getpass(prompt='Password: '): def default_getpass(prompt='Password: '):
print "Warning: Problem with getpass. Passwords may be echoed."
return _raw_input(prompt) return _raw_input(prompt)
@ -112,3 +97,22 @@ def getuser():
# If this fails, the exception will "explain" why # If this fails, the exception will "explain" why
import pwd import pwd
return pwd.getpwuid(os.getuid())[0] return pwd.getpwuid(os.getuid())[0]
# Bind the name getpass to the appropriate function
try:
import termios, TERMIOS
except ImportError:
try:
import msvcrt
except ImportError:
try:
from EasyDialogs import AskPassword
except ImportError:
getpass = default_getpass
else:
getpass = AskPassword
else:
getpass = win_getpass
else:
getpass = unix_getpass