OpenSSL.vip

Cryptography and SSL/TLS Toolkit

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

SYNOPSIS

 #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);

DESCRIPTION

The UI_STRING gets created internally and added to a UI whenever one of the functions UI_add_input_string(), UI_dup_input_string(), UI_add_verify_string(), UI_dup_verify_string(), UI_add_input_boolean(), UI_dup_input_boolean(), UI_add_info_string(), UI_dup_info_string(), UI_add_error_string() or UI_dup_error_string() is called. For a UI_METHOD user, there's no need to know more. For a UI_METHOD creator, it is of interest to fetch text from these UI_STRING objects as well as adding results to some of them.

UI_get_string_type() is used to retrieve the type of the given UI_STRING.

UI_get_input_flags() is used to retrieve the flags associated with the given UI_STRING.

UI_get0_output_string() is used to retrieve the actual string to output (prompt, info, error, ...).

UI_get0_action_string() is used to retrieve the action description associated with a UIT_BOOLEAN type UI_STRING. For all other UI_STRING types, NULL is returned. See UI_add_input_boolean(3) for more information on ok_chars and cancel_chars.

UI_set_result() does the same thing as UI_set_result_ex(), but calculates its length internally. It expects the string to be terminated with a NUL byte, and is therefore only useful with normal C strings.

RETURN VALUES

UI_get_string_type() returns the UI string type.

UI_get_input_flags() returns the UI string flags.

UI_get0_output_string() returns the UI string output string.

UI_get0_action_string() returns the UI string action description string for UIT_BOOLEAN type UI strings, NULL for any other type.

UI_get0_result_string() returns the UI string result buffer for UIT_PROMPT and UIT_VERIFY type UI strings, NULL for any other type.

UI_get_result_string_length() returns the UI string result buffer's content length for UIT_PROMPT and UIT_VERIFY type UI strings, -1 for any other type.

UI_get0_test_string() returns the UI string action description string for UIT_VERIFY type UI strings, NULL for any other type.

UI_get_result_minsize() returns the minimum allowed result size for the UI string for UIT_PROMPT and UIT_VERIFY type strings, -1 for any other type.

UI_get_result_maxsize() returns the minimum allowed result size for the UI string for UIT_PROMPT and UIT_VERIFY type strings, -1 for any other type.

UI_set_result() returns 0 on success or when the UI string is of any type other than UIT_PROMPT, UIT_VERIFY or UIT_BOOLEAN, -1 on error.

SEE ALSO

COPYRIGHT

Copyright 2001-2018 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at https://www.openssl.org/source/license.html.

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