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UI_STRING(3ossl) OpenSSL UI_STRING(3ossl) 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). prompt result with. This is only useful for UIT_VERIFY type strings. For all other UI_STRING types, NULL is returned. UI_get_result_minsize() and UI_get_result_maxsize() are used to retrieve the minimum and maximum required size of the result. This is only useful for UIT_PROMPT and UIT_VERIFY type strings. For all other UI_STRING types, -1 is returned. UI_set_result_ex() is used to set the result value of a prompt and its length. For UIT_PROMPT and UIT_VERIFY type UI strings, this sets the result retrievable with UI_get0_result_string() by copying the contents of result if its length fits the minimum and maximum size requirements. For UIT_BOOLEAN type UI strings, this sets the first character of the result retrievable with UI_get0_result_string() to the first ok_char given with UI_add_input_boolean() or UI_dup_input_boolean() if the result matched any of them, or the first of the cancel_chars if the result matched any of them, otherwise it's set to the NUL char "\0". 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 UI(3) 3.0.11 2023-09-19 UI_STRING(3ossl)