10:28 p.m.
We recently added a call to getpass(3) function. Needless to say this
doesn't exist on Windows. More seriously the man-page for getpass on
Linux has strong exhortations not to use the function.
NAME
getpass - get a password
SYNOPSIS
#include <unistd.h>
char *getpass( const char * prompt );
DESCRIPTION
This function is obsolete. Do not use it.
The getpass() function opens /dev/tty (the controlling terminal
of the
process), outputs the string prompt, turns off echoing, reads
one line
(the "password"), restores the terminal state and closes
/dev/tty
again.
[...]
CONFORMING TO
Present in SUSv2, but marked LEGACY. Removed in POSIX.1-2001.
Should we remove it? Replace it?
Rich.
--
Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/
Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod
Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in
England and Wales under Company Registration No. 03798903
10:36 p.m.
On Thu, Dec 06, 2007 at 02:28:58PM +0000, Richard W.M. Jones wrote:
We recently added a call to getpass(3) function. Needless to say
this
doesn't exist on Windows. More seriously the man-page for getpass on
Linux has strong exhortations not to use the function.
NAME
getpass - get a password
SYNOPSIS
#include <unistd.h>
char *getpass( const char * prompt );
DESCRIPTION
This function is obsolete. Do not use it.
The getpass() function opens /dev/tty (the controlling terminal
of the
process), outputs the string prompt, turns off echoing, reads
one line
(the "password"), restores the terminal state and closes
/dev/tty
again.
[...]
CONFORMING TO
Present in SUSv2, but marked LEGACY. Removed in POSIX.1-2001.
Should we remove it? Replace it?
I'm open to suggestions? I'm not aware of any 'easy' functions to do
the same thing. Could write a whole tonne of sick code which uses the
tcgetattr/tcsetattr() apis to turn off echoing on stdin, but getpass
was simpler. Maybe gnulib has something we can use ?
Regards,
Dan
--
|=- Red Hat, Engineering, Emerging Technologies, Boston. +1 978 392 2496 -=|
|=- Perl modules: http://search.cpan.org/~danberr/ -=|
|=- Projects: http://freshmeat.net/~danielpb/ -=|
|=- GnuPG: 7D3B9505 F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 -=|
10:36 p.m.
Daniel P. Berrange wrote:
On Thu, Dec 06, 2007 at 02:28:58PM +0000, Richard W.M. Jones wrote:
> We recently added a call to getpass(3) function. Needless to say this
> doesn't exist on Windows. More seriously the man-page for getpass on
> Linux has strong exhortations not to use the function.
>
> NAME
> getpass - get a password
>
> SYNOPSIS
> #include <unistd.h>
>
> char *getpass( const char * prompt );
>
> DESCRIPTION
> This function is obsolete. Do not use it.
>
> The getpass() function opens /dev/tty (the controlling terminal
> of the
> process), outputs the string prompt, turns off echoing, reads
> one line
> (the "password"), restores the terminal state and closes
> /dev/tty
> again.
> [...]
> CONFORMING TO
> Present in SUSv2, but marked LEGACY. Removed in POSIX.1-2001.
>
> Should we remove it? Replace it?
I'm open to suggestions? I'm not aware of any 'easy' functions to do
the same thing. Could write a whole tonne of sick code which uses the
tcgetattr/tcsetattr() apis to turn off echoing on stdin, but getpass
was simpler. Maybe gnulib has something we can use ?
Sorry should have checked that. Yes, gnulib does have getpass, LGPLv2+,
written by Jim Meyering.
Rich.
--
Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/
Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod
Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in
England and Wales under Company Registration No. 03798903
10:38 p.m.
On Thu, Dec 06, 2007 at 02:36:04PM +0000, Daniel P. Berrange wrote:
On Thu, Dec 06, 2007 at 02:28:58PM +0000, Richard W.M. Jones wrote:
> We recently added a call to getpass(3) function. Needless to say this
> doesn't exist on Windows. More seriously the man-page for getpass on
> Linux has strong exhortations not to use the function.
>
> NAME
> getpass - get a password
>
> SYNOPSIS
> #include <unistd.h>
>
> char *getpass( const char * prompt );
>
> DESCRIPTION
> This function is obsolete. Do not use it.
>
> The getpass() function opens /dev/tty (the controlling terminal
> of the
> process), outputs the string prompt, turns off echoing, reads
> one line
> (the "password"), restores the terminal state and closes
> /dev/tty
> again.
> [...]
> CONFORMING TO
> Present in SUSv2, but marked LEGACY. Removed in POSIX.1-2001.
>
> Should we remove it? Replace it?
I'm open to suggestions? I'm not aware of any 'easy' functions to do
the same thing. Could write a whole tonne of sick code which uses the
tcgetattr/tcsetattr() apis to turn off echoing on stdin, but getpass
was simpler. Maybe gnulib has something we can use ?
And looking at the glibc source, this is basically what gepass() does.
It opens /dev/tty, uses tcgetattr/tcsetattr to turn off echo, reads a
single line and then cleans up restoring echo and closing /dev/tty.
Dan.
--
|=- Red Hat, Engineering, Emerging Technologies, Boston. +1 978 392 2496 -=|
|=- Perl modules: http://search.cpan.org/~danberr/ -=|
|=- Projects: http://freshmeat.net/~danielpb/ -=|
|=- GnuPG: 7D3B9505 F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 -=|
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4 comments
3 participants
participants (3)
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Daniel P. Berrange -
Jim Meyering -
Richard W.M. Jones