167 lines
7.7 KiB
HTML
Executable File
167 lines
7.7 KiB
HTML
Executable File
<?xml version="1.0" ?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>UI_STRING</title>
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<meta http-equiv="content-type" content="text/html; charset=utf-8" />
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<link rev="made" href="mailto:root@localhost" />
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</head>
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<body style="background-color: white">
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<!-- INDEX BEGIN -->
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<div name="index">
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<p><a name="__index__"></a></p>
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<ul>
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<li><a href="#name">NAME</a></li>
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<li><a href="#synopsis">SYNOPSIS</a></li>
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<li><a href="#description">DESCRIPTION</a></li>
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<li><a href="#return_values">RETURN VALUES</a></li>
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<li><a href="#see_also">SEE ALSO</a></li>
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<li><a href="#copyright">COPYRIGHT</a></li>
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</ul>
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<hr name="index" />
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</div>
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<!-- INDEX END -->
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<p>
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</p>
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<hr />
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<h1><a name="name">NAME</a></h1>
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<p>UI_STRING, UI_string_types, UI_get_string_type,
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UI_get_input_flags, UI_get0_output_string,
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UI_get0_action_string, UI_get0_result_string, UI_get_result_string_length,
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UI_get0_test_string, UI_get_result_minsize,
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UI_get_result_maxsize, UI_set_result, UI_set_result_ex
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- User interface string parsing</p>
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<p>
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</p>
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<hr />
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<h1><a name="synopsis">SYNOPSIS</a></h1>
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<pre>
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#include <openssl/ui.h></pre>
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<pre>
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typedef struct ui_string_st UI_STRING;</pre>
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<pre>
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enum UI_string_types {
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UIT_NONE = 0,
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UIT_PROMPT, /* Prompt for a string */
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UIT_VERIFY, /* Prompt for a string and verify */
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UIT_BOOLEAN, /* Prompt for a yes/no response */
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UIT_INFO, /* Send info to the user */
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UIT_ERROR /* Send an error message to the user */
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};</pre>
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<pre>
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enum UI_string_types UI_get_string_type(UI_STRING *uis);
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int UI_get_input_flags(UI_STRING *uis);
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const char *UI_get0_output_string(UI_STRING *uis);
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const char *UI_get0_action_string(UI_STRING *uis);
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const char *UI_get0_result_string(UI_STRING *uis);
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int UI_get_result_string_length(UI_STRING *uis);
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const char *UI_get0_test_string(UI_STRING *uis);
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int UI_get_result_minsize(UI_STRING *uis);
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int UI_get_result_maxsize(UI_STRING *uis);
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int UI_set_result(UI *ui, UI_STRING *uis, const char *result);
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int UI_set_result_ex(UI *ui, UI_STRING *uis, const char *result, int len);</pre>
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<p>
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</p>
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<hr />
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<h1><a name="description">DESCRIPTION</a></h1>
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<p>The <strong>UI_STRING</strong> gets created internally and added to a <strong>UI</strong> whenever
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one of the functions <code>UI_add_input_string()</code>, <code>UI_dup_input_string()</code>,
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<code>UI_add_verify_string()</code>, <code>UI_dup_verify_string()</code>,
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<code>UI_add_input_boolean()</code>, <code>UI_dup_input_boolean()</code>, <code>UI_add_info_string()</code>,
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<code>UI_dup_info_string()</code>, <code>UI_add_error_string()</code> or <code>UI_dup_error_string()</code>
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is called.
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For a <strong>UI_METHOD</strong> user, there's no need to know more.
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For a <strong>UI_METHOD</strong> creator, it is of interest to fetch text from these
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<strong>UI_STRING</strong> objects as well as adding results to some of them.</p>
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<p><code>UI_get_string_type()</code> is used to retrieve the type of the given
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<strong>UI_STRING</strong>.</p>
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<p><code>UI_get_input_flags()</code> is used to retrieve the flags associated with the
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given <strong>UI_STRING</strong>.</p>
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<p>UI_get0_output_string() is used to retrieve the actual string to
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output (prompt, info, error, ...).</p>
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<p>UI_get0_action_string() is used to retrieve the action description
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associated with a <strong>UIT_BOOLEAN</strong> type <strong>UI_STRING</strong>.
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For all other <strong>UI_STRING</strong> types, NULL is returned.
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See <em>UI_add_input_boolean(3)</em>.</p>
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<p>UI_get0_result_string() and <code>UI_get_result_string_length()</code> are used to
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retrieve the result of a prompt and its length.
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This is only useful for <strong>UIT_PROMPT</strong> and <strong>UIT_VERIFY</strong> type strings.
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For all other <strong>UI_STRING</strong> types, UI_get0_result_string() returns NULL
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and <code>UI_get_result_string_length()</code> returns -1.</p>
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<p>UI_get0_test_string() is used to retrieve the string to compare the
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prompt result with.
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This is only useful for <strong>UIT_VERIFY</strong> type strings.
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For all other <strong>UI_STRING</strong> types, NULL is returned.</p>
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<p><code>UI_get_result_minsize()</code> and <code>UI_get_result_maxsize()</code> are used to
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retrieve the minimum and maximum required size of the result.
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This is only useful for <strong>UIT_PROMPT</strong> and <strong>UIT_VERIFY</strong> type strings.
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For all other <strong>UI_STRING</strong> types, -1 is returned.</p>
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<p><code>UI_set_result_ex()</code> is used to set the result value of a prompt and its length.
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For <strong>UIT_PROMPT</strong> and <strong>UIT_VERIFY</strong> type UI strings, this sets the
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result retrievable with UI_get0_result_string() by copying the
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contents of <strong>result</strong> if its length fits the minimum and maximum size
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requirements.
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For <strong>UIT_BOOLEAN</strong> type UI strings, this sets the first character of
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the result retrievable with UI_get0_result_string() to the first
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<strong>ok_char</strong> given with <code>UI_add_input_boolean()</code> or <code>UI_dup_input_boolean()</code>
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if the <strong>result</strong> matched any of them, or the first of the
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<strong>cancel_chars</strong> if the <strong>result</strong> matched any of them, otherwise it's
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set to the NUL char <code>\0</code>.
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See <em>UI_add_input_boolean(3)</em> for more information on <strong>ok_chars</strong> and
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<strong>cancel_chars</strong>.</p>
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<p><code>UI_set_result()</code> does the same thing as <code>UI_set_result_ex()</code>, but calculates
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its length internally.
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It expects the string to be terminated with a NUL byte, and is therefore
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only useful with normal C strings.</p>
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<p>
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</p>
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<hr />
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<h1><a name="return_values">RETURN VALUES</a></h1>
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<p><code>UI_get_string_type()</code> returns the UI string type.</p>
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<p><code>UI_get_input_flags()</code> returns the UI string flags.</p>
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<p>UI_get0_output_string() returns the UI string output string.</p>
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<p>UI_get0_action_string() returns the UI string action description
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string for <strong>UIT_BOOLEAN</strong> type UI strings, NULL for any other type.</p>
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<p>UI_get0_result_string() returns the UI string result buffer for
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<strong>UIT_PROMPT</strong> and <strong>UIT_VERIFY</strong> type UI strings, NULL for any other
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type.</p>
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<p><code>UI_get_result_string_length()</code> returns the UI string result buffer's
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content length for <strong>UIT_PROMPT</strong> and <strong>UIT_VERIFY</strong> type UI strings,
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-1 for any other type.</p>
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<p>UI_get0_test_string() returns the UI string action description
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string for <strong>UIT_VERIFY</strong> type UI strings, NULL for any other type.</p>
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<p><code>UI_get_result_minsize()</code> returns the minimum allowed result size for
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the UI string for <strong>UIT_PROMPT</strong> and <strong>UIT_VERIFY</strong> type strings,
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-1 for any other type.</p>
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<p><code>UI_get_result_maxsize()</code> returns the minimum allowed result size for
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the UI string for <strong>UIT_PROMPT</strong> and <strong>UIT_VERIFY</strong> type strings,
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-1 for any other type.</p>
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<p><code>UI_set_result()</code> returns 0 on success or when the UI string is of any
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type other than <strong>UIT_PROMPT</strong>, <strong>UIT_VERIFY</strong> or <strong>UIT_BOOLEAN</strong>, -1 on
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error.</p>
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<p>
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</p>
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<hr />
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<h1><a name="see_also">SEE ALSO</a></h1>
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<p><em>UI(3)</em></p>
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<p>
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</p>
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<hr />
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<h1><a name="copyright">COPYRIGHT</a></h1>
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<p>Copyright 2001-2018 The OpenSSL Project Authors. All Rights Reserved.</p>
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<p>Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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<a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p>
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</body>
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</html>
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