Come on guys, you can't just take OpenBSD manpage and commit it
over someone else's fixes; this is at least offensive. If you have problems doing a proper merge, we are here, your fellow committers. :-( Reapply markup fixes from revision 1.2 and fix some more. Also fix the $OpenBSD$ tag.
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.\" $OpenBSD: /usr/local/www/cvsroot/OpenBSD/src/lib/libc/gen/readpassphrase.3,v 1.7 2001/12/15 15:37:51 millert Exp $
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.\" $OpenBSD: readpassphrase.3,v 1.7 2001/12/15 15:37:51 millert Exp $
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.\"
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.\" Copyright (c) 2000 Todd C. Miller <Todd.Miller@courtesan.com>
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.\" All rights reserved.
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@ -34,8 +34,8 @@
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.Nm readpassphrase
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.Nd get a passphrase from the user
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.Sh SYNOPSIS
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.Fd #include <readpassphrase.h>
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.Ft char *
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.In readpassphrase.h
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.Ft "char *"
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.Fn readpassphrase "const char *prompt" "char *buf" "size_t bufsiz" "int flags"
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.Sh DESCRIPTION
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The
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@ -53,7 +53,9 @@ In this case it is generally not possible to turn off echo.
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.Pp
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Up to
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.Fa bufsiz
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- 1 characters (one is for the NUL) are read into the provided buffer
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\- 1 characters (one is for the
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.Dv NUL )
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are read into the provided buffer
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.Fa buf .
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Any additional
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characters and the terminating newline (or return) character are discarded.
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@ -62,14 +64,20 @@ characters and the terminating newline (or return) character are discarded.
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takes the following optional
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.Fa flags :
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.Pp
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.Bd -literal -offset indent -compact
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RPP_ECHO_OFF turn off echo (default behavior)
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RPP_ECHO_ON leave echo on
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RPP_REQUIRE_TTY fail if there is no tty
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RPP_FORCELOWER force input to lower case
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RPP_FORCEUPPER force input to upper case
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RPP_SEVENBIT strip the high bit from input
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.Ed
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.Bl -tag -width ".Dv RPP_REQUIRE_TTY" -compact
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.It Dv RPP_ECHO_OFF
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turn off echo (default behavior)
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.It Dv RPP_ECHO_ON
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leave echo on
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.It Dv RPP_REQUIRE_TTY
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fail if there is no tty
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.It Dv RPP_FORCELOWER
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force input to lower case
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.It Dv RPP_FORCEUPPER
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force input to upper case
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.It Dv RPP_SEVENBIT
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strip the high bit from input
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.El
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.Pp
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The calling process should zero the passphrase as soon as possible to
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avoid leaving the cleartext passphrase visible in the process's address
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@ -79,7 +87,9 @@ Upon successful completion,
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.Fn readpassphrase
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returns a pointer to the null-terminated passphrase.
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If an error is encountered, the terminal state is restored and
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a null pointer is returned.
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a
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.Dv NULL
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pointer is returned.
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.Sh ERRORS
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.Bl -tag -width Er
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.It Bq Er EINTR
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@ -88,12 +98,14 @@ The
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function was interrupted by a signal.
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.It Bq Er EINVAL
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The
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.Ar bufsiz
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.Fa bufsiz
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argument was zero.
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.It Bq Er EIO
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The process is a member of a background process attempting to read
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from its controlling terminal, the process is ignoring or blocking
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the SIGTTIN signal or the process group is orphaned.
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the
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.Dv SIGTTIN
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signal or the process group is orphaned.
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.It Bq Er EMFILE
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The process has already reached its limit for open file descriptors.
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.It Bq Er ENFILE
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@ -107,7 +119,7 @@ flag was specified.
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The following code fragment will read a passphrase from
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.Pa /dev/tty
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into the buffer
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.Fa passbuf.
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.Fa passbuf .
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.Bd -literal -offset indent
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char passbuf[1024];
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@ -128,15 +140,15 @@ memset(passbuf, 0, sizeof(passbuf));
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.Fn readpassphrase
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will catch the following signals:
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.Pp
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.Bd -literal -offset indent -compact
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SIGINT
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SIGHUP
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SIGQUIT
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SIGTERM
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SIGTSTP
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SIGTTIN
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SIGTTOU
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.Ed
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.Bl -tag -compact
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.It Dv SIGINT
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.It Dv SIGHUP
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.It Dv SIGQUIT
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.It Dv SIGTERM
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.It Dv SIGTSTP
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.It Dv SIGTTIN
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.It Dv SIGTTOU
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.El
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.Pp
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When one of the above signals is intercepted, terminal echo will
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be restored if it had previously been turned off.
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@ -148,16 +160,16 @@ default action is taken as per
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.Xr sigaction 2 .
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.Pp
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The
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.Dv SIGTSTP ,
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.Dv SIGTTIN ,
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.Dv SIGTTOU ,
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.Dv SIGTSTP , SIGTTIN ,
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and
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.Dv SIGTTOU
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signals (stop signal generated from keyboard or due to terminal I/O
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from a background proccess) are treated specially.
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When the process is resumed after it has been stopped,
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.Fn readpassphrase
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will reprint the prompt and the user may then enter a passphrase.
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.Sh FILES
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.Bl -tag -width /dev/tty -compact
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.Bl -tag -width ".Pa /dev/tty" -compact
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.It Pa /dev/tty
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.El
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.Sh SEE ALSO
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@ -167,7 +179,6 @@ will reprint the prompt and the user may then enter a passphrase.
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The
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.Fn readpassphrase
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function is an
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.Ox
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extension and should not be used if portability is desired.
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.Sh HISTORY
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The
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