Mercurial > cpython-lru_cache-weakref

annotate Lib/getpass.py @ 25838:8540887bcec6 2.2

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Backport of 2.183: Fix memory leak in add_subclass() found by NealN with valgrind.
author Guido van Rossum <guido@python.org>
date Fri, 18 Oct 2002 13:42:21 +0000
parents 6d5ac3c43416
children 403dcbc9043f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
7941
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
1 """Utilities to get a password and/or the current user name.
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
2
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
3 getpass(prompt) - prompt for a password, with echo turned off
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
4 getuser() - get the user name from the environment or password database
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
5
11389
895102eea485 print a warning if the password will be echoed.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 10142
diff changeset
6 On Windows, the msvcrt module will be used.
895102eea485 print a warning if the password will be echoed.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 10142
diff changeset
7 On the Mac EasyDialogs.AskPassword is used, if available.
895102eea485 print a warning if the password will be echoed.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 10142
diff changeset
8
7941
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
9 """
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
10
11870
d7eca5b0960a Simple changes by Gerrit Holl - move author acknowledgements out of
Guido van Rossum <guido@python.org>
parents: 11389
diff changeset
11 # Authors: Piers Lauder (original)
d7eca5b0960a Simple changes by Gerrit Holl - move author acknowledgements out of
Guido van Rossum <guido@python.org>
parents: 11389
diff changeset
12 # Guido van Rossum (Windows support and cleanup)
d7eca5b0960a Simple changes by Gerrit Holl - move author acknowledgements out of
Guido van Rossum <guido@python.org>
parents: 11389
diff changeset
13
11389
895102eea485 print a warning if the password will be echoed.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 10142
diff changeset
14 import sys
7941
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
15
16072
bae889f44cd1 more __all__ updates
Skip Montanaro <skip@pobox.com>
parents: 15868
diff changeset
16 __all__ = ["getpass","getuser"]
bae889f44cd1 more __all__ updates
Skip Montanaro <skip@pobox.com>
parents: 15868
diff changeset
17
11389
895102eea485 print a warning if the password will be echoed.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 10142
diff changeset
18 def unix_getpass(prompt='Password: '):
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
19 """Prompt for a password, with echo turned off.
7941
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
20
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
21 Restore terminal settings at end.
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
22 """
7941
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
23
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
24 try:
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
25 fd = sys.stdin.fileno()
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
26 except:
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
27 return default_getpass(prompt)
7941
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
28
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
29 old = termios.tcgetattr(fd) # a copy to save
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
30 new = old[:]
7941
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
31
16807
74fd1959cf44 Get the needed constants from termios, not TERMIOS.
Fred Drake <fdrake@acm.org>
parents: 16072
diff changeset
32 new[3] = new[3] & ~termios.ECHO # 3 == 'lflags'
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
33 try:
16807
74fd1959cf44 Get the needed constants from termios, not TERMIOS.
Fred Drake <fdrake@acm.org>
parents: 16072
diff changeset
34 termios.tcsetattr(fd, termios.TCSADRAIN, new)
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
35 passwd = _raw_input(prompt)
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
36 finally:
16807
74fd1959cf44 Get the needed constants from termios, not TERMIOS.
Fred Drake <fdrake@acm.org>
parents: 16072
diff changeset
37 termios.tcsetattr(fd, termios.TCSADRAIN, old)
7941
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
38
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
39 sys.stdout.write('\n')
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
40 return passwd
7941
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
41
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
42
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
43 def win_getpass(prompt='Password: '):
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
44 """Prompt for password with echo off, using Windows getch()."""
19606
6d5ac3c43416 win_getpass(): if sys.stdin is not sys.__stdin__, use
Guido van Rossum <guido@python.org>
parents: 19226
diff changeset
45 if sys.stdin is not sys.__stdin__:
6d5ac3c43416 win_getpass(): if sys.stdin is not sys.__stdin__, use
Guido van Rossum <guido@python.org>
parents: 19226
diff changeset
46 return default_getpass(prompt)
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
47 import msvcrt
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
48 for c in prompt:
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
49 msvcrt.putch(c)
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
50 pw = ""
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
51 while 1:
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
52 c = msvcrt.getch()
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
53 if c == '\r' or c == '\n':
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
54 break
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
55 if c == '\003':
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
56 raise KeyboardInterrupt
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
57 if c == '\b':
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
58 pw = pw[:-1]
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
59 else:
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
60 pw = pw + c
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
61 msvcrt.putch('\r')
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
62 msvcrt.putch('\n')
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
63 return pw
7941
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
64
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
65
8042
4919dee18781 Be nicer to systems that have neither termios nor msvcrt.
Guido van Rossum <guido@python.org>
parents: 7941
diff changeset
66 def default_getpass(prompt='Password: '):
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
67 print "Warning: Problem with getpass. Passwords may be echoed."
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
68 return _raw_input(prompt)
8775
d39678d22b4a Don't use raw_input() to ask for the password; this puts the password
Guido van Rossum <guido@python.org>
parents: 8495
diff changeset
69
d39678d22b4a Don't use raw_input() to ask for the password; this puts the password
Guido van Rossum <guido@python.org>
parents: 8495
diff changeset
70
d39678d22b4a Don't use raw_input() to ask for the password; this puts the password
Guido van Rossum <guido@python.org>
parents: 8495
diff changeset
71 def _raw_input(prompt=""):
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
72 # A raw_input() replacement that doesn't save the string in the
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
73 # GNU readline history.
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
74 prompt = str(prompt)
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
75 if prompt:
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
76 sys.stdout.write(prompt)
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
77 line = sys.stdin.readline()
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
78 if not line:
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
79 raise EOFError
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
80 if line[-1] == '\n':
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
81 line = line[:-1]
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
82 return line
8042
4919dee18781 Be nicer to systems that have neither termios nor msvcrt.
Guido van Rossum <guido@python.org>
parents: 7941
diff changeset
83
4919dee18781 Be nicer to systems that have neither termios nor msvcrt.
Guido van Rossum <guido@python.org>
parents: 7941
diff changeset
84
7941
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
85 def getuser():
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
86 """Get the username from the environment or password database.
7941
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
87
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
88 First try various environment variables, then the password
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
89 database. This works on Windows as long as USERNAME is set.
7941
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
90
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
91 """
7941
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
92
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
93 import os
7941
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
94
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
95 for name in ('LOGNAME', 'USER', 'LNAME', 'USERNAME'):
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
96 user = os.environ.get(name)
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
97 if user:
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
98 return user
7941
91ecda9d5245 Another new utility: getpass() prompts for a password, with echo off.
Guido van Rossum <guido@python.org>
parents:
diff changeset
99
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
100 # If this fails, the exception will "explain" why
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
101 import pwd
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
102 return pwd.getpwuid(os.getuid())[0]
11389
895102eea485 print a warning if the password will be echoed.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 10142
diff changeset
103
895102eea485 print a warning if the password will be echoed.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 10142
diff changeset
104 # Bind the name getpass to the appropriate function
895102eea485 print a warning if the password will be echoed.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 10142
diff changeset
105 try:
16807
74fd1959cf44 Get the needed constants from termios, not TERMIOS.
Fred Drake <fdrake@acm.org>
parents: 16072
diff changeset
106 import termios
11389
895102eea485 print a warning if the password will be echoed.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 10142
diff changeset
107 except ImportError:
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
108 try:
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
109 import msvcrt
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
110 except ImportError:
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
111 try:
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
112 from EasyDialogs import AskPassword
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
113 except ImportError:
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
114 getpass = default_getpass
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
115 else:
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
116 getpass = AskPassword
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
117 else:
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
118 getpass = win_getpass
11389
895102eea485 print a warning if the password will be echoed.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 10142
diff changeset
119 else:
15868
3060cbfa01be Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 11870
diff changeset
120 getpass = unix_getpass