22

✏️ Editing: UI_string_types.3

.\" Automatically generated by Pod::Man 4.11 (Pod::Simple 3.35)
.\"
.\" Standard preamble:
.\" ========================================================================
.de Sp \" Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
..
.de Vb \" Begin verbatim text
.ft CW
.nf
.ne \\$1
..
.de Ve \" End verbatim text
.ft R
.fi
..
.\" Set up some character translations and predefined strings.  \*(-- will
.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
.\" double quote, and \*(R" will give a right double quote.  \*(C+ will
.\" give a nicer C++.  Capital omega is used to do unbreakable dashes and
.\" therefore won't be available.  \*(C` and \*(C' expand to `' in nroff,
.\" nothing in troff, for use with C<>.
.tr \(*W-
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
.ie n \{\
.    ds -- \(*W-
.    ds PI pi
.    if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
.    if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\"  diablo 12 pitch
.    ds L" ""
.    ds R" ""
.    ds C` ""
.    ds C' ""
'br\}
.el\{\
.    ds -- \|\(em\|
.    ds PI \(*p
.    ds L" ``
.    ds R" ''
.    ds C`
.    ds C'
'br\}
.\"
.\" Escape single quotes in literal strings from groff's Unicode transform.
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\"
.\" If the F register is >0, we'll generate index entries on stderr for
.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
.\" entries marked with X<> in POD.  Of course, you'll have to process the
.\" output yourself in some meaningful fashion.
.\"
.\" Avoid warning from groff about undefined register 'F'.
.de IX
..
.nr rF 0
.if \n(.g .if rF .nr rF 1
.if (\n(rF:(\n(.g==0)) \{\
.    if \nF \{\
.        de IX
.        tm Index:\\$1\t\\n%\t"\\$2"
..
.        if !\nF==2 \{\
.            nr % 0
.            nr F 2
.        \}
.    \}
.\}
.rr rF
.\"
.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
.\" Fear.  Run.  Save yourself.  No user-serviceable parts.
.    \" fudge factors for nroff and troff
.if n \{\
.    ds #H 0
.    ds #V .8m
.    ds #F .3m
.    ds #[ \f1
.    ds #] \fP
.\}
.if t \{\
.    ds #H ((1u-(\\\\n(.fu%2u))*.13m)
.    ds #V .6m
.    ds #F 0
.    ds #[ \&
.    ds #] \&
.\}
.    \" simple accents for nroff and troff
.if n \{\
.    ds ' \&
.    ds ` \&
.    ds ^ \&
.    ds , \&
.    ds ~ ~
.    ds /
.\}
.if t \{\
.    ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
.    ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
.    ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
.    ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
.    ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
.    ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
.\}
.    \" troff and (daisy-wheel) nroff accents
.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
.ds ae a\h'-(\w'a'u*4/10)'e
.ds Ae A\h'-(\w'A'u*4/10)'E
.    \" corrections for vroff
.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
.    \" for low resolution devices (crt and lpr)
.if \n(.H>23 .if \n(.V>19 \
\{\
.    ds : e
.    ds 8 ss
.    ds o a
.    ds d- d\h'-1'\(ga
.    ds D- D\h'-1'\(hy
.    ds th \o'bp'
.    ds Th \o'LP'
.    ds ae ae
.    ds Ae AE
.\}
.rm #[ #] #H #V #F C
.\" ========================================================================
.\"
.IX Title "UI_STRING 3"
.TH UI_STRING 3 "2023-09-11" "1.1.1w" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
UI_STRING, UI_string_types, UI_get_string_type, UI_get_input_flags, UI_get0_output_string, UI_get0_action_string, UI_get0_result_string, UI_get_result_string_length, UI_get0_test_string, UI_get_result_minsize, UI_get_result_maxsize, UI_set_result, UI_set_result_ex \&\- User interface string parsing
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/ui.h>
\&
\& typedef struct ui_string_st UI_STRING;
\&
\& enum UI_string_types {
\&     UIT_NONE = 0,
\&     UIT_PROMPT,                 /* Prompt for a string */
\&     UIT_VERIFY,                 /* Prompt for a string and verify */
\&     UIT_BOOLEAN,                /* Prompt for a yes/no response */
\&     UIT_INFO,                   /* Send info to the user */
\&     UIT_ERROR                   /* Send an error message to the user */
\& };
\&
\& enum UI_string_types UI_get_string_type(UI_STRING *uis);
\& int UI_get_input_flags(UI_STRING *uis);
\& const char *UI_get0_output_string(UI_STRING *uis);
\& const char *UI_get0_action_string(UI_STRING *uis);
\& const char *UI_get0_result_string(UI_STRING *uis);
\& int UI_get_result_string_length(UI_STRING *uis);
\& const char *UI_get0_test_string(UI_STRING *uis);
\& int UI_get_result_minsize(UI_STRING *uis);
\& int UI_get_result_maxsize(UI_STRING *uis);
\& int UI_set_result(UI *ui, UI_STRING *uis, const char *result);
\& int UI_set_result_ex(UI *ui, UI_STRING *uis, const char *result, int len);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The \fB\s-1UI_STRING\s0\fR gets created internally and added to a \fB\s-1UI\s0\fR whenever
one of the functions \fBUI_add_input_string()\fR, \fBUI_dup_input_string()\fR,
\&\fBUI_add_verify_string()\fR, \fBUI_dup_verify_string()\fR,
\&\fBUI_add_input_boolean()\fR, \fBUI_dup_input_boolean()\fR, \fBUI_add_info_string()\fR,
\&\fBUI_dup_info_string()\fR, \fBUI_add_error_string()\fR or \fBUI_dup_error_string()\fR
is called.
For a \fB\s-1UI_METHOD\s0\fR user, there's no need to know more.
For a \fB\s-1UI_METHOD\s0\fR creator, it is of interest to fetch text from these
\&\fB\s-1UI_STRING\s0\fR objects as well as adding results to some of them.
.PP
\&\fBUI_get_string_type()\fR is used to retrieve the type of the given
\&\fB\s-1UI_STRING\s0\fR.
.PP
\&\fBUI_get_input_flags()\fR is used to retrieve the flags associated with the
given \fB\s-1UI_STRING\s0\fR.
.PP
\&\fBUI_get0_output_string()\fR is used to retrieve the actual string to
output (prompt, info, error, ...).
.PP
\&\fBUI_get0_action_string()\fR is used to retrieve the action description
associated with a \fB\s-1UIT_BOOLEAN\s0\fR type \fB\s-1UI_STRING\s0\fR.
For all other \fB\s-1UI_STRING\s0\fR types, \s-1NULL\s0 is returned.
See \fBUI_add_input_boolean\fR\|(3).
.PP
\&\fBUI_get0_result_string()\fR and \fBUI_get_result_string_length()\fR are used to
retrieve the result of a prompt and its length.
This is only useful for \fB\s-1UIT_PROMPT\s0\fR and \fB\s-1UIT_VERIFY\s0\fR type strings.
For all other \fB\s-1UI_STRING\s0\fR types, \fBUI_get0_result_string()\fR returns \s-1NULL\s0
and \fBUI_get_result_string_length()\fR returns \-1.
.PP
\&\fBUI_get0_test_string()\fR is used to retrieve the string to compare the
prompt result with.
This is only useful for \fB\s-1UIT_VERIFY\s0\fR type strings.
For all other \fB\s-1UI_STRING\s0\fR types, \s-1NULL\s0 is returned.
.PP
\&\fBUI_get_result_minsize()\fR and \fBUI_get_result_maxsize()\fR are used to
retrieve the minimum and maximum required size of the result.
This is only useful for \fB\s-1UIT_PROMPT\s0\fR and \fB\s-1UIT_VERIFY\s0\fR type strings.
For all other \fB\s-1UI_STRING\s0\fR types, \-1 is returned.
.PP
\&\fBUI_set_result_ex()\fR is used to set the result value of a prompt and its length.
For \fB\s-1UIT_PROMPT\s0\fR and \fB\s-1UIT_VERIFY\s0\fR type \s-1UI\s0 strings, this sets the
result retrievable with \fBUI_get0_result_string()\fR by copying the
contents of \fBresult\fR if its length fits the minimum and maximum size
requirements.
For \fB\s-1UIT_BOOLEAN\s0\fR type \s-1UI\s0 strings, this sets the first character of
the result retrievable with \fBUI_get0_result_string()\fR to the first
\&\fBok_char\fR given with \fBUI_add_input_boolean()\fR or \fBUI_dup_input_boolean()\fR
if the \fBresult\fR matched any of them, or the first of the
\&\fBcancel_chars\fR if the \fBresult\fR matched any of them, otherwise it's
set to the \s-1NUL\s0 char \f(CW\*(C`\e0\*(C'\fR.
See \fBUI_add_input_boolean\fR\|(3) for more information on \fBok_chars\fR and
\&\fBcancel_chars\fR.
.PP
\&\fBUI_set_result()\fR does the same thing as \fBUI_set_result_ex()\fR, but calculates
its length internally.
It expects the string to be terminated with a \s-1NUL\s0 byte, and is therefore
only useful with normal C strings.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fBUI_get_string_type()\fR returns the \s-1UI\s0 string type.
.PP
\&\fBUI_get_input_flags()\fR returns the \s-1UI\s0 string flags.
.PP
\&\fBUI_get0_output_string()\fR returns the \s-1UI\s0 string output string.
.PP
\&\fBUI_get0_action_string()\fR returns the \s-1UI\s0 string action description
string for \fB\s-1UIT_BOOLEAN\s0\fR type \s-1UI\s0 strings, \s-1NULL\s0 for any other type.
.PP
\&\fBUI_get0_result_string()\fR returns the \s-1UI\s0 string result buffer for
\&\fB\s-1UIT_PROMPT\s0\fR and \fB\s-1UIT_VERIFY\s0\fR type \s-1UI\s0 strings, \s-1NULL\s0 for any other
type.
.PP
\&\fBUI_get_result_string_length()\fR returns the \s-1UI\s0 string result buffer's
content length for \fB\s-1UIT_PROMPT\s0\fR and \fB\s-1UIT_VERIFY\s0\fR type \s-1UI\s0 strings,
\&\-1 for any other type.
.PP
\&\fBUI_get0_test_string()\fR returns the \s-1UI\s0 string action description
string for \fB\s-1UIT_VERIFY\s0\fR type \s-1UI\s0 strings, \s-1NULL\s0 for any other type.
.PP
\&\fBUI_get_result_minsize()\fR returns the minimum allowed result size for
the \s-1UI\s0 string for \fB\s-1UIT_PROMPT\s0\fR and \fB\s-1UIT_VERIFY\s0\fR type strings,
\&\-1 for any other type.
.PP
\&\fBUI_get_result_maxsize()\fR returns the minimum allowed result size for
the \s-1UI\s0 string for \fB\s-1UIT_PROMPT\s0\fR and \fB\s-1UIT_VERIFY\s0\fR type strings,
\&\-1 for any other type.
.PP
\&\fBUI_set_result()\fR returns 0 on success or when the \s-1UI\s0 string is of any
type other than \fB\s-1UIT_PROMPT\s0\fR, \fB\s-1UIT_VERIFY\s0\fR or \fB\s-1UIT_BOOLEAN\s0\fR, \-1 on
error.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\s-1\fBUI\s0\fR\|(3)
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2001\-2018 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the OpenSSL license (the \*(L"License\*(R").  You may not use
this file except in compliance with the License.  You can obtain a copy
in the file \s-1LICENSE\s0 in the source distribution or at
<https://www.openssl.org/source/license.html>.

MR SKB