| 1 | /*
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| 2 | * WARNING: do not edit!
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| 3 | * Generated by Makefile from ui.h.in
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| 4 | *
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| 5 | * Copyright 2001-2020 The OpenSSL Project Authors. All Rights Reserved.
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| 6 | *
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| 7 | * Licensed under the Apache License 2.0 (the "License"). You may not use
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| 8 | * this file except in compliance with the License. You can obtain a copy
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| 9 | * in the file LICENSE in the source distribution or at
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| 10 | * https://www.openssl.org/source/license.html
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| 11 | */
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| 12 |
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| 13 |
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| 14 |
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| 15 | #ifndef OPENSSL_UI_H
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| 16 | # define OPENSSL_UI_H
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| 17 | # pragma once
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| 18 |
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| 19 | # include <openssl/macros.h>
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| 20 | # ifndef OPENSSL_NO_DEPRECATED_3_0
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| 21 | # define HEADER_UI_H
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| 22 | # endif
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| 23 |
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| 24 | # include <openssl/opensslconf.h>
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| 25 |
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| 26 | # ifndef OPENSSL_NO_DEPRECATED_1_1_0
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| 27 | # include <openssl/crypto.h>
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| 28 | # endif
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| 29 | # include <openssl/safestack.h>
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| 30 | # include <openssl/pem.h>
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| 31 | # include <openssl/types.h>
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| 32 | # include <openssl/uierr.h>
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| 33 |
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| 34 | /* For compatibility reasons, the macro OPENSSL_NO_UI is currently retained */
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| 35 | # ifndef OPENSSL_NO_DEPRECATED_3_0
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| 36 | # ifdef OPENSSL_NO_UI_CONSOLE
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| 37 | # define OPENSSL_NO_UI
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| 38 | # endif
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| 39 | # endif
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| 40 |
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| 41 | # ifdef __cplusplus
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| 42 | extern "C" {
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| 43 | # endif
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| 44 |
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| 45 | /*
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| 46 | * All the following functions return -1 or NULL on error and in some cases
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| 47 | * (UI_process()) -2 if interrupted or in some other way cancelled. When
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| 48 | * everything is fine, they return 0, a positive value or a non-NULL pointer,
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| 49 | * all depending on their purpose.
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| 50 | */
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| 51 |
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| 52 | /* Creators and destructor. */
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| 53 | UI *UI_new(void);
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| 54 | UI *UI_new_method(const UI_METHOD *method);
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| 55 | void UI_free(UI *ui);
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| 56 |
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| 57 | /*-
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| 58 | The following functions are used to add strings to be printed and prompt
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| 59 | strings to prompt for data. The names are UI_{add,dup}_<function>_string
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| 60 | and UI_{add,dup}_input_boolean.
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| 61 |
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| 62 | UI_{add,dup}_<function>_string have the following meanings:
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| 63 | add add a text or prompt string. The pointers given to these
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| 64 | functions are used verbatim, no copying is done.
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| 65 | dup make a copy of the text or prompt string, then add the copy
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| 66 | to the collection of strings in the user interface.
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| 67 | <function>
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| 68 | The function is a name for the functionality that the given
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| 69 | string shall be used for. It can be one of:
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| 70 | input use the string as data prompt.
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| 71 | verify use the string as verification prompt. This
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| 72 | is used to verify a previous input.
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| 73 | info use the string for informational output.
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| 74 | error use the string for error output.
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| 75 | Honestly, there's currently no difference between info and error for the
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| 76 | moment.
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| 77 |
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| 78 | UI_{add,dup}_input_boolean have the same semantics for "add" and "dup",
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| 79 | and are typically used when one wants to prompt for a yes/no response.
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| 80 |
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| 81 | All of the functions in this group take a UI and a prompt string.
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| 82 | The string input and verify addition functions also take a flag argument,
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| 83 | a buffer for the result to end up with, a minimum input size and a maximum
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| 84 | input size (the result buffer MUST be large enough to be able to contain
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| 85 | the maximum number of characters). Additionally, the verify addition
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| 86 | functions takes another buffer to compare the result against.
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| 87 | The boolean input functions take an action description string (which should
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| 88 | be safe to ignore if the expected user action is obvious, for example with
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| 89 | a dialog box with an OK button and a Cancel button), a string of acceptable
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| 90 | characters to mean OK and to mean Cancel. The two last strings are checked
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| 91 | to make sure they don't have common characters. Additionally, the same
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| 92 | flag argument as for the string input is taken, as well as a result buffer.
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| 93 | The result buffer is required to be at least one byte long. Depending on
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| 94 | the answer, the first character from the OK or the Cancel character strings
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| 95 | will be stored in the first byte of the result buffer. No NUL will be
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| 96 | added, so the result is *not* a string.
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| 97 |
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| 98 | On success, the all return an index of the added information. That index
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| 99 | is useful when retrieving results with UI_get0_result(). */
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| 100 | int UI_add_input_string(UI *ui, const char *prompt, int flags,
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| 101 | char *result_buf, int minsize, int maxsize);
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| 102 | int UI_dup_input_string(UI *ui, const char *prompt, int flags,
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| 103 | char *result_buf, int minsize, int maxsize);
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| 104 | int UI_add_verify_string(UI *ui, const char *prompt, int flags,
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| 105 | char *result_buf, int minsize, int maxsize,
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| 106 | const char *test_buf);
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| 107 | int UI_dup_verify_string(UI *ui, const char *prompt, int flags,
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| 108 | char *result_buf, int minsize, int maxsize,
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| 109 | const char *test_buf);
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| 110 | int UI_add_input_boolean(UI *ui, const char *prompt, const char *action_desc,
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| 111 | const char *ok_chars, const char *cancel_chars,
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| 112 | int flags, char *result_buf);
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| 113 | int UI_dup_input_boolean(UI *ui, const char *prompt, const char *action_desc,
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| 114 | const char *ok_chars, const char *cancel_chars,
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| 115 | int flags, char *result_buf);
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| 116 | int UI_add_info_string(UI *ui, const char *text);
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| 117 | int UI_dup_info_string(UI *ui, const char *text);
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| 118 | int UI_add_error_string(UI *ui, const char *text);
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| 119 | int UI_dup_error_string(UI *ui, const char *text);
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| 120 |
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| 121 | /* These are the possible flags. They can be or'ed together. */
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| 122 | /* Use to have echoing of input */
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| 123 | # define UI_INPUT_FLAG_ECHO 0x01
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| 124 | /*
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| 125 | * Use a default password. Where that password is found is completely up to
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| 126 | * the application, it might for example be in the user data set with
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| 127 | * UI_add_user_data(). It is not recommended to have more than one input in
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| 128 | * each UI being marked with this flag, or the application might get
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| 129 | * confused.
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| 130 | */
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| 131 | # define UI_INPUT_FLAG_DEFAULT_PWD 0x02
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| 132 |
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| 133 | /*-
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| 134 | * The user of these routines may want to define flags of their own. The core
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| 135 | * UI won't look at those, but will pass them on to the method routines. They
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| 136 | * must use higher bits so they don't get confused with the UI bits above.
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| 137 | * UI_INPUT_FLAG_USER_BASE tells which is the lowest bit to use. A good
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| 138 | * example of use is this:
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| 139 | *
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| 140 | * #define MY_UI_FLAG1 (0x01 << UI_INPUT_FLAG_USER_BASE)
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| 141 | *
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| 142 | */
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| 143 | # define UI_INPUT_FLAG_USER_BASE 16
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| 144 |
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| 145 | /*-
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| 146 | * The following function helps construct a prompt.
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| 147 | * phrase_desc is a textual short description of the phrase to enter,
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| 148 | * for example "pass phrase", and
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| 149 | * object_name is the name of the object
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| 150 | * (which might be a card name or a file name) or NULL.
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| 151 | * The returned string shall always be allocated on the heap with
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| 152 | * OPENSSL_malloc(), and need to be free'd with OPENSSL_free().
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| 153 | *
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| 154 | * If the ui_method doesn't contain a pointer to a user-defined prompt
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| 155 | * constructor, a default string is built, looking like this:
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| 156 | *
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| 157 | * "Enter {phrase_desc} for {object_name}:"
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| 158 | *
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| 159 | * So, if phrase_desc has the value "pass phrase" and object_name has
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| 160 | * the value "foo.key", the resulting string is:
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| 161 | *
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| 162 | * "Enter pass phrase for foo.key:"
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| 163 | */
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| 164 | char *UI_construct_prompt(UI *ui_method,
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| 165 | const char *phrase_desc, const char *object_name);
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| 166 |
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| 167 | /*
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| 168 | * The following function is used to store a pointer to user-specific data.
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| 169 | * Any previous such pointer will be returned and replaced.
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| 170 | *
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| 171 | * For callback purposes, this function makes a lot more sense than using
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| 172 | * ex_data, since the latter requires that different parts of OpenSSL or
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| 173 | * applications share the same ex_data index.
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| 174 | *
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| 175 | * Note that the UI_OpenSSL() method completely ignores the user data. Other
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| 176 | * methods may not, however.
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| 177 | */
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| 178 | void *UI_add_user_data(UI *ui, void *user_data);
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| 179 | /*
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| 180 | * Alternatively, this function is used to duplicate the user data.
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| 181 | * This uses the duplicator method function. The destroy function will
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| 182 | * be used to free the user data in this case.
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| 183 | */
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| 184 | int UI_dup_user_data(UI *ui, void *user_data);
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| 185 | /* We need a user data retrieving function as well. */
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| 186 | void *UI_get0_user_data(UI *ui);
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| 187 |
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| 188 | /* Return the result associated with a prompt given with the index i. */
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| 189 | const char *UI_get0_result(UI *ui, int i);
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| 190 | int UI_get_result_length(UI *ui, int i);
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| 191 |
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| 192 | /* When all strings have been added, process the whole thing. */
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| 193 | int UI_process(UI *ui);
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| 194 |
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| 195 | /*
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| 196 | * Give a user interface parameterised control commands. This can be used to
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| 197 | * send down an integer, a data pointer or a function pointer, as well as be
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| 198 | * used to get information from a UI.
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| 199 | */
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| 200 | int UI_ctrl(UI *ui, int cmd, long i, void *p, void (*f) (void));
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| 201 |
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| 202 | /* The commands */
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| 203 | /*
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| 204 | * Use UI_CONTROL_PRINT_ERRORS with the value 1 to have UI_process print the
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| 205 | * OpenSSL error stack before printing any info or added error messages and
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| 206 | * before any prompting.
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| 207 | */
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| 208 | # define UI_CTRL_PRINT_ERRORS 1
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| 209 | /*
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| 210 | * Check if a UI_process() is possible to do again with the same instance of
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| 211 | * a user interface. This makes UI_ctrl() return 1 if it is redoable, and 0
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| 212 | * if not.
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| 213 | */
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| 214 | # define UI_CTRL_IS_REDOABLE 2
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| 215 |
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| 216 | /* Some methods may use extra data */
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| 217 | # define UI_set_app_data(s,arg) UI_set_ex_data(s,0,arg)
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| 218 | # define UI_get_app_data(s) UI_get_ex_data(s,0)
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| 219 |
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| 220 | # define UI_get_ex_new_index(l, p, newf, dupf, freef) \
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| 221 | CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_UI, l, p, newf, dupf, freef)
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| 222 | int UI_set_ex_data(UI *r, int idx, void *arg);
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| 223 | void *UI_get_ex_data(const UI *r, int idx);
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| 224 |
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| 225 | /* Use specific methods instead of the built-in one */
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| 226 | void UI_set_default_method(const UI_METHOD *meth);
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| 227 | const UI_METHOD *UI_get_default_method(void);
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| 228 | const UI_METHOD *UI_get_method(UI *ui);
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| 229 | const UI_METHOD *UI_set_method(UI *ui, const UI_METHOD *meth);
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| 230 |
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| 231 | # ifndef OPENSSL_NO_UI_CONSOLE
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| 232 |
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| 233 | /* The method with all the built-in thingies */
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| 234 | UI_METHOD *UI_OpenSSL(void);
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| 235 |
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| 236 | # endif
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| 237 |
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| 238 | /*
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| 239 | * NULL method. Literally does nothing, but may serve as a placeholder
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| 240 | * to avoid internal default.
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| 241 | */
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| 242 | const UI_METHOD *UI_null(void);
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| 243 |
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| 244 | /* ---------- For method writers ---------- */
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| 245 | /*-
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| 246 | A method contains a number of functions that implement the low level
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| 247 | of the User Interface. The functions are:
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| 248 |
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| 249 | an opener This function starts a session, maybe by opening
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| 250 | a channel to a tty, or by opening a window.
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| 251 | a writer This function is called to write a given string,
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| 252 | maybe to the tty, maybe as a field label in a
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| 253 | window.
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| 254 | a flusher This function is called to flush everything that
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| 255 | has been output so far. It can be used to actually
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| 256 | display a dialog box after it has been built.
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| 257 | a reader This function is called to read a given prompt,
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| 258 | maybe from the tty, maybe from a field in a
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| 259 | window. Note that it's called with all string
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| 260 | structures, not only the prompt ones, so it must
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| 261 | check such things itself.
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| 262 | a closer This function closes the session, maybe by closing
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| 263 | the channel to the tty, or closing the window.
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| 264 |
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| 265 | All these functions are expected to return:
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| 266 |
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| 267 | 0 on error.
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| 268 | 1 on success.
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| 269 | -1 on out-of-band events, for example if some prompting has
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| 270 | been canceled (by pressing Ctrl-C, for example). This is
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| 271 | only checked when returned by the flusher or the reader.
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| 272 |
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| 273 | The way this is used, the opener is first called, then the writer for all
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| 274 | strings, then the flusher, then the reader for all strings and finally the
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| 275 | closer. Note that if you want to prompt from a terminal or other command
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| 276 | line interface, the best is to have the reader also write the prompts
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| 277 | instead of having the writer do it. If you want to prompt from a dialog
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| 278 | box, the writer can be used to build up the contents of the box, and the
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| 279 | flusher to actually display the box and run the event loop until all data
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| 280 | has been given, after which the reader only grabs the given data and puts
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| 281 | them back into the UI strings.
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| 282 |
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| 283 | All method functions take a UI as argument. Additionally, the writer and
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| 284 | the reader take a UI_STRING.
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| 285 | */
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| 286 |
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| 287 | /*
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| 288 | * The UI_STRING type is the data structure that contains all the needed info
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| 289 | * about a string or a prompt, including test data for a verification prompt.
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| 290 | */
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| 291 | typedef struct ui_string_st UI_STRING;
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| 292 |
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| 293 | SKM_DEFINE_STACK_OF_INTERNAL(UI_STRING, UI_STRING, UI_STRING)
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| 294 | #define sk_UI_STRING_num(sk) OPENSSL_sk_num(ossl_check_const_UI_STRING_sk_type(sk))
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| 295 | #define sk_UI_STRING_value(sk, idx) ((UI_STRING *)OPENSSL_sk_value(ossl_check_const_UI_STRING_sk_type(sk), (idx)))
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| 296 | #define sk_UI_STRING_new(cmp) ((STACK_OF(UI_STRING) *)OPENSSL_sk_new(ossl_check_UI_STRING_compfunc_type(cmp)))
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| 297 | #define sk_UI_STRING_new_null() ((STACK_OF(UI_STRING) *)OPENSSL_sk_new_null())
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| 298 | #define sk_UI_STRING_new_reserve(cmp, n) ((STACK_OF(UI_STRING) *)OPENSSL_sk_new_reserve(ossl_check_UI_STRING_compfunc_type(cmp), (n)))
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| 299 | #define sk_UI_STRING_reserve(sk, n) OPENSSL_sk_reserve(ossl_check_UI_STRING_sk_type(sk), (n))
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| 300 | #define sk_UI_STRING_free(sk) OPENSSL_sk_free(ossl_check_UI_STRING_sk_type(sk))
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| 301 | #define sk_UI_STRING_zero(sk) OPENSSL_sk_zero(ossl_check_UI_STRING_sk_type(sk))
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| 302 | #define sk_UI_STRING_delete(sk, i) ((UI_STRING *)OPENSSL_sk_delete(ossl_check_UI_STRING_sk_type(sk), (i)))
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| 303 | #define sk_UI_STRING_delete_ptr(sk, ptr) ((UI_STRING *)OPENSSL_sk_delete_ptr(ossl_check_UI_STRING_sk_type(sk), ossl_check_UI_STRING_type(ptr)))
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| 304 | #define sk_UI_STRING_push(sk, ptr) OPENSSL_sk_push(ossl_check_UI_STRING_sk_type(sk), ossl_check_UI_STRING_type(ptr))
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| 305 | #define sk_UI_STRING_unshift(sk, ptr) OPENSSL_sk_unshift(ossl_check_UI_STRING_sk_type(sk), ossl_check_UI_STRING_type(ptr))
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| 306 | #define sk_UI_STRING_pop(sk) ((UI_STRING *)OPENSSL_sk_pop(ossl_check_UI_STRING_sk_type(sk)))
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| 307 | #define sk_UI_STRING_shift(sk) ((UI_STRING *)OPENSSL_sk_shift(ossl_check_UI_STRING_sk_type(sk)))
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| 308 | #define sk_UI_STRING_pop_free(sk, freefunc) OPENSSL_sk_pop_free(ossl_check_UI_STRING_sk_type(sk),ossl_check_UI_STRING_freefunc_type(freefunc))
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| 309 | #define sk_UI_STRING_insert(sk, ptr, idx) OPENSSL_sk_insert(ossl_check_UI_STRING_sk_type(sk), ossl_check_UI_STRING_type(ptr), (idx))
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| 310 | #define sk_UI_STRING_set(sk, idx, ptr) ((UI_STRING *)OPENSSL_sk_set(ossl_check_UI_STRING_sk_type(sk), (idx), ossl_check_UI_STRING_type(ptr)))
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| 311 | #define sk_UI_STRING_find(sk, ptr) OPENSSL_sk_find(ossl_check_UI_STRING_sk_type(sk), ossl_check_UI_STRING_type(ptr))
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| 312 | #define sk_UI_STRING_find_ex(sk, ptr) OPENSSL_sk_find_ex(ossl_check_UI_STRING_sk_type(sk), ossl_check_UI_STRING_type(ptr))
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| 313 | #define sk_UI_STRING_find_all(sk, ptr, pnum) OPENSSL_sk_find_all(ossl_check_UI_STRING_sk_type(sk), ossl_check_UI_STRING_type(ptr), pnum)
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| 314 | #define sk_UI_STRING_sort(sk) OPENSSL_sk_sort(ossl_check_UI_STRING_sk_type(sk))
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| 315 | #define sk_UI_STRING_is_sorted(sk) OPENSSL_sk_is_sorted(ossl_check_const_UI_STRING_sk_type(sk))
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| 316 | #define sk_UI_STRING_dup(sk) ((STACK_OF(UI_STRING) *)OPENSSL_sk_dup(ossl_check_const_UI_STRING_sk_type(sk)))
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| 317 | #define sk_UI_STRING_deep_copy(sk, copyfunc, freefunc) ((STACK_OF(UI_STRING) *)OPENSSL_sk_deep_copy(ossl_check_const_UI_STRING_sk_type(sk), ossl_check_UI_STRING_copyfunc_type(copyfunc), ossl_check_UI_STRING_freefunc_type(freefunc)))
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| 318 | #define sk_UI_STRING_set_cmp_func(sk, cmp) ((sk_UI_STRING_compfunc)OPENSSL_sk_set_cmp_func(ossl_check_UI_STRING_sk_type(sk), ossl_check_UI_STRING_compfunc_type(cmp)))
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| 319 |
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| 320 |
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| 321 | /*
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| 322 | * The different types of strings that are currently supported. This is only
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| 323 | * needed by method authors.
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| 324 | */
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| 325 | enum UI_string_types {
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| 326 | UIT_NONE = 0,
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| 327 | UIT_PROMPT, /* Prompt for a string */
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| 328 | UIT_VERIFY, /* Prompt for a string and verify */
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| 329 | UIT_BOOLEAN, /* Prompt for a yes/no response */
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| 330 | UIT_INFO, /* Send info to the user */
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| 331 | UIT_ERROR /* Send an error message to the user */
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| 332 | };
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| 333 |
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| 334 | /* Create and manipulate methods */
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| 335 | UI_METHOD *UI_create_method(const char *name);
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| 336 | void UI_destroy_method(UI_METHOD *ui_method);
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| 337 | int UI_method_set_opener(UI_METHOD *method, int (*opener) (UI *ui));
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| 338 | int UI_method_set_writer(UI_METHOD *method,
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| 339 | int (*writer) (UI *ui, UI_STRING *uis));
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| 340 | int UI_method_set_flusher(UI_METHOD *method, int (*flusher) (UI *ui));
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| 341 | int UI_method_set_reader(UI_METHOD *method,
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| 342 | int (*reader) (UI *ui, UI_STRING *uis));
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| 343 | int UI_method_set_closer(UI_METHOD *method, int (*closer) (UI *ui));
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| 344 | int UI_method_set_data_duplicator(UI_METHOD *method,
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| 345 | void *(*duplicator) (UI *ui, void *ui_data),
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| 346 | void (*destructor)(UI *ui, void *ui_data));
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| 347 | int UI_method_set_prompt_constructor(UI_METHOD *method,
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| 348 | char *(*prompt_constructor) (UI *ui,
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| 349 | const char
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| 350 | *phrase_desc,
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| 351 | const char
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| 352 | *object_name));
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| 353 | int UI_method_set_ex_data(UI_METHOD *method, int idx, void *data);
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| 354 | int (*UI_method_get_opener(const UI_METHOD *method)) (UI *);
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| 355 | int (*UI_method_get_writer(const UI_METHOD *method)) (UI *, UI_STRING *);
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| 356 | int (*UI_method_get_flusher(const UI_METHOD *method)) (UI *);
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| 357 | int (*UI_method_get_reader(const UI_METHOD *method)) (UI *, UI_STRING *);
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| 358 | int (*UI_method_get_closer(const UI_METHOD *method)) (UI *);
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| 359 | char *(*UI_method_get_prompt_constructor(const UI_METHOD *method))
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| 360 | (UI *, const char *, const char *);
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| 361 | void *(*UI_method_get_data_duplicator(const UI_METHOD *method)) (UI *, void *);
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| 362 | void (*UI_method_get_data_destructor(const UI_METHOD *method)) (UI *, void *);
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| 363 | const void *UI_method_get_ex_data(const UI_METHOD *method, int idx);
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| 364 |
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| 365 | /*
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| 366 | * The following functions are helpers for method writers to access relevant
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| 367 | * data from a UI_STRING.
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| 368 | */
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| 369 |
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| 370 | /* Return type of the UI_STRING */
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| 371 | enum UI_string_types UI_get_string_type(UI_STRING *uis);
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| 372 | /* Return input flags of the UI_STRING */
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| 373 | int UI_get_input_flags(UI_STRING *uis);
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| 374 | /* Return the actual string to output (the prompt, info or error) */
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| 375 | const char *UI_get0_output_string(UI_STRING *uis);
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| 376 | /*
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| 377 | * Return the optional action string to output (the boolean prompt
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| 378 | * instruction)
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| 379 | */
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| 380 | const char *UI_get0_action_string(UI_STRING *uis);
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| 381 | /* Return the result of a prompt */
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| 382 | const char *UI_get0_result_string(UI_STRING *uis);
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| 383 | int UI_get_result_string_length(UI_STRING *uis);
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| 384 | /*
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| 385 | * Return the string to test the result against. Only useful with verifies.
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|---|
| 386 | */
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| 387 | const char *UI_get0_test_string(UI_STRING *uis);
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|---|
| 388 | /* Return the required minimum size of the result */
|
|---|
| 389 | int UI_get_result_minsize(UI_STRING *uis);
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|---|
| 390 | /* Return the required maximum size of the result */
|
|---|
| 391 | int UI_get_result_maxsize(UI_STRING *uis);
|
|---|
| 392 | /* Set the result of a UI_STRING. */
|
|---|
| 393 | int UI_set_result(UI *ui, UI_STRING *uis, const char *result);
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|---|
| 394 | int UI_set_result_ex(UI *ui, UI_STRING *uis, const char *result, int len);
|
|---|
| 395 |
|
|---|
| 396 | /* A couple of popular utility functions */
|
|---|
| 397 | int UI_UTIL_read_pw_string(char *buf, int length, const char *prompt,
|
|---|
| 398 | int verify);
|
|---|
| 399 | int UI_UTIL_read_pw(char *buf, char *buff, int size, const char *prompt,
|
|---|
| 400 | int verify);
|
|---|
| 401 | UI_METHOD *UI_UTIL_wrap_read_pem_callback(pem_password_cb *cb, int rwflag);
|
|---|
| 402 |
|
|---|
| 403 |
|
|---|
| 404 | # ifdef __cplusplus
|
|---|
| 405 | }
|
|---|
| 406 | # endif
|
|---|
| 407 | #endif
|
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