/* crypto/ui/ui_lib.c -*- mode:C; c-file-style: "eay" -*- */

 /* Written by Richard Levitte (richard@levitte.org) for the OpenSSL

  * project 2001.

  */

 /* ====================================================================

  * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.

  *

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions

  * are met:

  *

  * 1. Redistributions of source code must retain the above copyright

  *    notice, this list of conditions and the following disclaimer. 

  *

  * 2. Redistributions in binary form must reproduce the above copyright

  *    notice, this list of conditions and the following disclaimer in

  *    the documentation and/or other materials provided with the

  *    distribution.

  *

  * 3. All advertising materials mentioning features or use of this

  *    software must display the following acknowledgment:

  *    "This product includes software developed by the OpenSSL Project

  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"

  *

  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to

  *    endorse or promote products derived from this software without

  *    prior written permission. For written permission, please contact

  *    openssl-core@openssl.org.

  *

  * 5. Products derived from this software may not be called "OpenSSL"

  *    nor may "OpenSSL" appear in their names without prior written

  *    permission of the OpenSSL Project.

  *

  * 6. Redistributions of any form whatsoever must retain the following

  *    acknowledgment:

  *    "This product includes software developed by the OpenSSL Project

  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"

  *

  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR

  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

  * OF THE POSSIBILITY OF SUCH DAMAGE.

  * ====================================================================

  *

  * This product includes cryptographic software written by Eric Young

  * (eay@cryptsoft.com).  This product includes software written by Tim

  * Hudson (tjh@cryptsoft.com).

  *

  */

  /*

  © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

  */

 #include <string.h>

 #include "cryptlib.h"

 #include <openssl/e_os2.h>

 #include <openssl/buffer.h>

 #include <openssl/ui.h>

 #include <openssl/err.h>

 #include "ui_locl.h"

 #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))

 #include "libcrypto_wsd_macros.h"

 #include "libcrypto_wsd.h"

 #endif

 IMPLEMENT_STACK_OF(UI_STRING_ST)

 #ifndef EMULATOR

 static const UI_METHOD *default_UI_meth=NULL;

 #else

 GET_STATIC_VAR_FROM_TLS(default_UI_meth,ui_lib,const UI_METHOD *)

 #define default_UI_meth (*GET_WSD_VAR_NAME(default_UI_meth,ui_lib, s)())

 #endif

 EXPORT_C UI *UI_new(void)

 	{

 	return(UI_new_method(NULL));

 	}

 EXPORT_C UI *UI_new_method(const UI_METHOD *method)

 	{

 	UI *ret;

 	ret=(UI *)OPENSSL_malloc(sizeof(UI));

 	if (ret == NULL)

 		{

 		UIerr(UI_F_UI_NEW_METHOD,ERR_R_MALLOC_FAILURE);

 		return NULL;

 		}

 	if (method == NULL)

 		ret->meth=UI_get_default_method();

 	else

 		ret->meth=method;

 	ret->strings=NULL;

 	ret->user_data=NULL;

 	CRYPTO_new_ex_data(CRYPTO_EX_INDEX_UI, ret, &ret->ex_data);

 	return ret;

 	}

 static void free_string(UI_STRING *uis)

 	{

 	if (uis->flags & OUT_STRING_FREEABLE)

 		{

 		OPENSSL_free((char *)uis->out_string);

 		switch(uis->type)

 			{

 		case UIT_BOOLEAN:

 			OPENSSL_free((char *)uis->_.boolean_data.action_desc);

 			OPENSSL_free((char *)uis->_.boolean_data.ok_chars);

 			OPENSSL_free((char *)uis->_.boolean_data.cancel_chars);

 			break;

 		default:

 			break;

 			}

 		}

 	OPENSSL_free(uis);

 	}

 EXPORT_C void UI_free(UI *ui)

 	{

 	if (ui == NULL)

 		return;

 	sk_UI_STRING_pop_free(ui->strings,free_string);

 	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_UI, ui, &ui->ex_data);

 	OPENSSL_free(ui);

 	}

 static int allocate_string_stack(UI *ui)

 	{

 	if (ui->strings == NULL)

 		{

 		ui->strings=sk_UI_STRING_new_null();

 		if (ui->strings == NULL)

 			{

 			return -1;

 			}

 		}

 	return 0;

 	}

 static UI_STRING *general_allocate_prompt(UI *ui, const char *prompt,

 	int prompt_freeable, enum UI_string_types type, int input_flags,

 	char *result_buf)

 	{

 	UI_STRING *ret = NULL;

 	if (prompt == NULL)

 		{

 		UIerr(UI_F_GENERAL_ALLOCATE_PROMPT,ERR_R_PASSED_NULL_PARAMETER);

 		}

 	else if ((type == UIT_PROMPT || type == UIT_VERIFY

 			 || type == UIT_BOOLEAN) && result_buf == NULL)

 		{

 		UIerr(UI_F_GENERAL_ALLOCATE_PROMPT,UI_R_NO_RESULT_BUFFER);

 		}

 	else if ((ret = (UI_STRING *)OPENSSL_malloc(sizeof(UI_STRING))))

 		{

 		ret->out_string=prompt;

 		ret->flags=prompt_freeable ? OUT_STRING_FREEABLE : 0;

 		ret->input_flags=input_flags;

 		ret->type=type;

 		ret->result_buf=result_buf;

 		}

 	return ret;

 	}

 static int general_allocate_string(UI *ui, const char *prompt,

 	int prompt_freeable, enum UI_string_types type, int input_flags,

 	char *result_buf, int minsize, int maxsize, const char *test_buf)

 	{

 	int ret = -1;

 	UI_STRING *s = general_allocate_prompt(ui, prompt, prompt_freeable,

 		type, input_flags, result_buf);

 	if (s)

 		{

 		if (allocate_string_stack(ui) >= 0)

 			{

 			s->_.string_data.result_minsize=minsize;

 			s->_.string_data.result_maxsize=maxsize;

 			s->_.string_data.test_buf=test_buf;

 			ret=sk_UI_STRING_push(ui->strings, s);

 			/* sk_push() returns 0 on error.  Let's addapt that */

 			if (ret <= 0) ret--;

 			}

 		else

 			free_string(s);

 		}

 	return ret;

 	}

 static int general_allocate_boolean(UI *ui,

 	const char *prompt, const char *action_desc,

 	const char *ok_chars, const char *cancel_chars,

 	int prompt_freeable, enum UI_string_types type, int input_flags,

 	char *result_buf)

 	{

 	int ret = -1;

 	UI_STRING *s;

 	const char *p;

 	if (ok_chars == NULL)

 		{

 		UIerr(UI_F_GENERAL_ALLOCATE_BOOLEAN,ERR_R_PASSED_NULL_PARAMETER);

 		}

 	else if (cancel_chars == NULL)

 		{

 		UIerr(UI_F_GENERAL_ALLOCATE_BOOLEAN,ERR_R_PASSED_NULL_PARAMETER);

 		}

 	else

 		{

 		for(p = ok_chars; *p; p++)

 			{

 			if (strchr(cancel_chars, *p))

 				{

 				UIerr(UI_F_GENERAL_ALLOCATE_BOOLEAN,

 					UI_R_COMMON_OK_AND_CANCEL_CHARACTERS);

 				}

 			}

 		s = general_allocate_prompt(ui, prompt, prompt_freeable,

 			type, input_flags, result_buf);

 		if (s)

 			{

 			if (allocate_string_stack(ui) >= 0)

 				{

 				s->_.boolean_data.action_desc = action_desc;

 				s->_.boolean_data.ok_chars = ok_chars;

 				s->_.boolean_data.cancel_chars = cancel_chars;

 				ret=sk_UI_STRING_push(ui->strings, s);

 				/* sk_push() returns 0 on error.

 				   Let's addapt that */

 				if (ret <= 0) ret--;

 				}

 			else

 				free_string(s);

 			}

 		}

 	return ret;

 	}

 /* Returns the index to the place in the stack or -1 for error.  Uses a

    direct reference to the prompt.  */

 EXPORT_C int UI_add_input_string(UI *ui, const char *prompt, int flags,

 	char *result_buf, int minsize, int maxsize)

 	{

 	return general_allocate_string(ui, prompt, 0,

 		UIT_PROMPT, flags, result_buf, minsize, maxsize, NULL);

 	}

 /* Same as UI_add_input_string(), excepts it takes a copy of the prompt */

 EXPORT_C int UI_dup_input_string(UI *ui, const char *prompt, int flags,

 	char *result_buf, int minsize, int maxsize)

 	{

 	char *prompt_copy=NULL;

 	if (prompt)

 		{

 		prompt_copy=BUF_strdup(prompt);

 		if (prompt_copy == NULL)

 			{

 			UIerr(UI_F_UI_DUP_INPUT_STRING,ERR_R_MALLOC_FAILURE);

 			return 0;

 			}

 		}

 	return general_allocate_string(ui, prompt_copy, 1,

 		UIT_PROMPT, flags, result_buf, minsize, maxsize, NULL);

 	}

 EXPORT_C int UI_add_verify_string(UI *ui, const char *prompt, int flags,

 	char *result_buf, int minsize, int maxsize, const char *test_buf)

 	{

 	return general_allocate_string(ui, prompt, 0,

 		UIT_VERIFY, flags, result_buf, minsize, maxsize, test_buf);

 	}

 EXPORT_C int UI_dup_verify_string(UI *ui, const char *prompt, int flags,

 	char *result_buf, int minsize, int maxsize, const char *test_buf)

 	{

 	char *prompt_copy=NULL;

 	if (prompt)

 		{

 		prompt_copy=BUF_strdup(prompt);

 		if (prompt_copy == NULL)

 			{

 			UIerr(UI_F_UI_DUP_VERIFY_STRING,ERR_R_MALLOC_FAILURE);

 			return -1;

 			}

 		}

 	return general_allocate_string(ui, prompt_copy, 1,

 		UIT_VERIFY, flags, result_buf, minsize, maxsize, test_buf);

 	}

 EXPORT_C int UI_add_input_boolean(UI *ui, const char *prompt, const char *action_desc,

 	const char *ok_chars, const char *cancel_chars,

 	int flags, char *result_buf)

 	{

 	return general_allocate_boolean(ui, prompt, action_desc,

 		ok_chars, cancel_chars, 0, UIT_BOOLEAN, flags, result_buf);

 	}

 EXPORT_C int UI_dup_input_boolean(UI *ui, const char *prompt, const char *action_desc,

 	const char *ok_chars, const char *cancel_chars,

 	int flags, char *result_buf)

 	{

 	char *prompt_copy = NULL;

 	char *action_desc_copy = NULL;

 	char *ok_chars_copy = NULL;

 	char *cancel_chars_copy = NULL;

 	if (prompt)

 		{

 		prompt_copy=BUF_strdup(prompt);

 		if (prompt_copy == NULL)

 			{

 			UIerr(UI_F_UI_DUP_INPUT_BOOLEAN,ERR_R_MALLOC_FAILURE);

 			goto err;

 			}

 		}

 	if (action_desc)

 		{

 		action_desc_copy=BUF_strdup(action_desc);

 		if (action_desc_copy == NULL)

 			{

 			UIerr(UI_F_UI_DUP_INPUT_BOOLEAN,ERR_R_MALLOC_FAILURE);

 			goto err;

 			}

 		}

 	if (ok_chars)

 		{

 		ok_chars_copy=BUF_strdup(ok_chars);

 		if (ok_chars_copy == NULL)

 			{

 			UIerr(UI_F_UI_DUP_INPUT_BOOLEAN,ERR_R_MALLOC_FAILURE);

 			goto err;

 			}

 		}

 	if (cancel_chars)

 		{

 		cancel_chars_copy=BUF_strdup(cancel_chars);

 		if (cancel_chars_copy == NULL)

 			{

 			UIerr(UI_F_UI_DUP_INPUT_BOOLEAN,ERR_R_MALLOC_FAILURE);

 			goto err;

 			}

 		}

 	return general_allocate_boolean(ui, prompt_copy, action_desc_copy,

 		ok_chars_copy, cancel_chars_copy, 1, UIT_BOOLEAN, flags,

 		result_buf);

  err:

 	if (prompt_copy) OPENSSL_free(prompt_copy);

 	if (action_desc_copy) OPENSSL_free(action_desc_copy);

 	if (ok_chars_copy) OPENSSL_free(ok_chars_copy);

 	if (cancel_chars_copy) OPENSSL_free(cancel_chars_copy);

 	return -1;

 	}

 EXPORT_C int UI_add_info_string(UI *ui, const char *text)

 	{

 	return general_allocate_string(ui, text, 0, UIT_INFO, 0, NULL, 0, 0,

 		NULL);

 	}

 EXPORT_C int UI_dup_info_string(UI *ui, const char *text)

 	{

 	char *text_copy=NULL;

 	if (text)

 		{

 		text_copy=BUF_strdup(text);

 		if (text_copy == NULL)

 			{

 			UIerr(UI_F_UI_DUP_INFO_STRING,ERR_R_MALLOC_FAILURE);

 			return -1;

 			}

 		}

 	return general_allocate_string(ui, text_copy, 1, UIT_INFO, 0, NULL,

 		0, 0, NULL);

 	}

 EXPORT_C int UI_add_error_string(UI *ui, const char *text)

 	{

 	return general_allocate_string(ui, text, 0, UIT_ERROR, 0, NULL, 0, 0,

 		NULL);

 	}

 EXPORT_C int UI_dup_error_string(UI *ui, const char *text)

 	{

 	char *text_copy=NULL;

 	if (text)

 		{

 		text_copy=BUF_strdup(text);

 		if (text_copy == NULL)

 			{

 			UIerr(UI_F_UI_DUP_ERROR_STRING,ERR_R_MALLOC_FAILURE);

 			return -1;

 			}

 		}

 	return general_allocate_string(ui, text_copy, 1, UIT_ERROR, 0, NULL,

 		0, 0, NULL);

 	}

 EXPORT_C char *UI_construct_prompt(UI *ui, const char *object_desc,

 	const char *object_name)

 	{

 	char *prompt = NULL;

 	if (ui->meth->ui_construct_prompt)

 		prompt = ui->meth->ui_construct_prompt(ui,

 			object_desc, object_name);

 	else

 		{

 		char prompt1[] = "Enter ";

 		char prompt2[] = " for ";

 		char prompt3[] = ":";

 		int len = 0;

 		if (object_desc == NULL)

 			return NULL;

 		len = sizeof(prompt1) - 1 + strlen(object_desc);

 		if (object_name)

 			len += sizeof(prompt2) - 1 + strlen(object_name);

 		len += sizeof(prompt3) - 1;

 		prompt = (char *)OPENSSL_malloc(len + 1);

 #ifdef SYMBIAN		

 		if(prompt==NULL)

 		return NULL;

 #endif		

 		BUF_strlcpy(prompt, prompt1, len + 1);

 		BUF_strlcat(prompt, object_desc, len + 1);

 		if (object_name)

 			{

 			BUF_strlcat(prompt, prompt2, len + 1);

 			BUF_strlcat(prompt, object_name, len + 1);

 			}

 		BUF_strlcat(prompt, prompt3, len + 1);

 		}

 	return prompt;

 	}

 EXPORT_C void *UI_add_user_data(UI *ui, void *user_data)

 	{

 	void *old_data = ui->user_data;

 	ui->user_data = user_data;

 	return old_data;

 	}

 EXPORT_C void *UI_get0_user_data(UI *ui)

 	{

 	return ui->user_data;

 	}

 EXPORT_C const char *UI_get0_result(UI *ui, int i)

 	{

 	if (i < 0)

 		{

 		UIerr(UI_F_UI_GET0_RESULT,UI_R_INDEX_TOO_SMALL);

 		return NULL;

 		}

 	if (i >= sk_UI_STRING_num(ui->strings))

 		{

 		UIerr(UI_F_UI_GET0_RESULT,UI_R_INDEX_TOO_LARGE);

 		return NULL;

 		}

 	return UI_get0_result_string(sk_UI_STRING_value(ui->strings, i));

 	}

 static int print_error(const char *str, size_t len, UI *ui)

 	{

 	UI_STRING uis;

 	memset(&uis, 0, sizeof(uis));

 	uis.type = UIT_ERROR;

 	uis.out_string = str;

 	if (ui->meth->ui_write_string

 		&& !ui->meth->ui_write_string(ui, &uis))

 		return -1;

 	return 0;

 	}

 EXPORT_C int UI_process(UI *ui)

 	{

 	int i, ok=0;

 	if (ui->meth->ui_open_session && !ui->meth->ui_open_session(ui))

 		return -1;

 	if (ui->flags & UI_FLAG_PRINT_ERRORS)

 		ERR_print_errors_cb(

 			(int (*)(const char *, size_t, void *))print_error,

 			(void *)ui);

 	for(i=0; i<sk_UI_STRING_num(ui->strings); i++)

 		{

 		if (ui->meth->ui_write_string

 			&& !ui->meth->ui_write_string(ui,

 				sk_UI_STRING_value(ui->strings, i)))

 			{

 			ok=-1;

 			goto err;

 			}

 		}

 	if (ui->meth->ui_flush)

 		switch(ui->meth->ui_flush(ui))

 			{

 		case -1: /* Interrupt/Cancel/something... */

 			ok = -2;

 			goto err;

 		case 0: /* Errors */

 			ok = -1;

 			goto err;

 		default: /* Success */

 			ok = 0;

 			break;

 			}

 	for(i=0; i<sk_UI_STRING_num(ui->strings); i++)

 		{

 		if (ui->meth->ui_read_string)

 			{

 			switch(ui->meth->ui_read_string(ui,

 				sk_UI_STRING_value(ui->strings, i)))

 				{

 			case -1: /* Interrupt/Cancel/something... */

 				ok = -2;

 				goto err;

 			case 0: /* Errors */

 				ok = -1;

 				goto err;

 			default: /* Success */

 				ok = 0;

 				break;

 				}

 			}

 		}

  err:

 	if (ui->meth->ui_close_session && !ui->meth->ui_close_session(ui))

 		return -1;

 	return ok;

 	}

 EXPORT_C int UI_ctrl(UI *ui, int cmd, long i, void *p, void (*f)(void))

 	{

 	if (ui == NULL)

 		{

 		UIerr(UI_F_UI_CTRL,ERR_R_PASSED_NULL_PARAMETER);

 		return -1;

 		}

 	switch(cmd)

 		{

 	case UI_CTRL_PRINT_ERRORS:

 		{

 		int save_flag = !!(ui->flags & UI_FLAG_PRINT_ERRORS);

 		if (i)

 			ui->flags |= UI_FLAG_PRINT_ERRORS;

 		else

 			ui->flags &= ~UI_FLAG_PRINT_ERRORS;

 		return save_flag;

 		}

 	case UI_CTRL_IS_REDOABLE:

 		return !!(ui->flags & UI_FLAG_REDOABLE);

 	default:

 		break;

 		}

 	UIerr(UI_F_UI_CTRL,UI_R_UNKNOWN_CONTROL_COMMAND);

 	return -1;

 	}

 EXPORT_C int UI_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,

 	     CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)

         {

 	return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_UI, argl, argp,

 				new_func, dup_func, free_func);

         }

 EXPORT_C int UI_set_ex_data(UI *r, int idx, void *arg)

 	{

 	return(CRYPTO_set_ex_data(&r->ex_data,idx,arg));

 	}

 EXPORT_C void *UI_get_ex_data(UI *r, int idx)

 	{

 	return(CRYPTO_get_ex_data(&r->ex_data,idx));

 	}

 EXPORT_C void UI_set_default_method(const UI_METHOD *meth)

 	{

 	default_UI_meth=meth;

 	}

 EXPORT_C const UI_METHOD *UI_get_default_method(void)

 	{

 	if (default_UI_meth == NULL)

 		{

 		default_UI_meth=UI_OpenSSL();

 		}

 	return default_UI_meth;

 	}

 EXPORT_C const UI_METHOD *UI_get_method(UI *ui)

 	{

 	return ui->meth;

 	}

 EXPORT_C const UI_METHOD *UI_set_method(UI *ui, const UI_METHOD *meth)

 	{

 	ui->meth=meth;

 	return ui->meth;

 	}

 EXPORT_C UI_METHOD *UI_create_method(char *name)

 	{

 	UI_METHOD *ui_method = (UI_METHOD *)OPENSSL_malloc(sizeof(UI_METHOD));

 	if (ui_method)

 		{

 		memset(ui_method, 0, sizeof(*ui_method));

 		ui_method->name = BUF_strdup(name);

 		}

 	return ui_method;

 	}

 /* BIG FSCKING WARNING!!!!  If you use this on a statically allocated method

    (that is, it hasn't been allocated using UI_create_method(), you deserve

    anything Murphy can throw at you and more!  You have been warned. */

 EXPORT_C void UI_destroy_method(UI_METHOD *ui_method)

 	{

 	OPENSSL_free(ui_method->name);

 	ui_method->name = NULL;

 	OPENSSL_free(ui_method);

 	}

 EXPORT_C int UI_method_set_opener(UI_METHOD *method, int (*opener)(UI *ui))

 	{

 	if (method)

 		{

 		method->ui_open_session = opener;

 		return 0;

 		}

 	else

 		return -1;

 	}

 EXPORT_C int UI_method_set_writer(UI_METHOD *method, int (*writer)(UI *ui, UI_STRING *uis))

 	{

 	if (method)

 		{

 		method->ui_write_string = writer;

 		return 0;

 		}

 	else

 		return -1;

 	}

 EXPORT_C int UI_method_set_flusher(UI_METHOD *method, int (*flusher)(UI *ui))

 	{

 	if (method)

 		{

 		method->ui_flush = flusher;

 		return 0;

 		}

 	else

 		return -1;

 	}

 EXPORT_C int UI_method_set_reader(UI_METHOD *method, int (*reader)(UI *ui, UI_STRING *uis))

 	{

 	if (method)

 		{

 		method->ui_read_string = reader;

 		return 0;

 		}

 	else

 		return -1;

 	}

 EXPORT_C int UI_method_set_closer(UI_METHOD *method, int (*closer)(UI *ui))

 	{

 	if (method)

 		{

 		method->ui_close_session = closer;

 		return 0;

 		}

 	else

 		return -1;

 	}

 EXPORT_C int (*UI_method_get_opener(UI_METHOD *method))(UI*)

 	{

 	if (method)

 		return method->ui_open_session;

 	else

 		return NULL;

 	}

 EXPORT_C int (*UI_method_get_writer(UI_METHOD *method))(UI*,UI_STRING*)

 	{

 	if (method)

 		return method->ui_write_string;

 	else

 		return NULL;

 	}

 EXPORT_C int (*UI_method_get_flusher(UI_METHOD *method))(UI*)

 	{

 	if (method)

 		return method->ui_flush;

 	else

 		return NULL;

 	}

 EXPORT_C int (*UI_method_get_reader(UI_METHOD *method))(UI*,UI_STRING*)

 	{

 	if (method)

 		return method->ui_read_string;

 	else

 		return NULL;

 	}

 EXPORT_C int (*UI_method_get_closer(UI_METHOD *method))(UI*)

 	{

 	if (method)

 		return method->ui_close_session;

 	else

 		return NULL;

 	}

 EXPORT_C enum UI_string_types UI_get_string_type(UI_STRING *uis)

 	{

 	if (!uis)

 		return UIT_NONE;

 	return uis->type;

 	}

 EXPORT_C int UI_get_input_flags(UI_STRING *uis)

 	{

 	if (!uis)

 		return 0;

 	return uis->input_flags;

 	}

 EXPORT_C const char *UI_get0_output_string(UI_STRING *uis)

 	{

 	if (!uis)

 		return NULL;

 	return uis->out_string;

 	}

 EXPORT_C const char *UI_get0_action_string(UI_STRING *uis)

 	{

 	if (!uis)

 		return NULL;

 	switch(uis->type)

 		{

 	case UIT_PROMPT:

 	case UIT_BOOLEAN:

 		return uis->_.boolean_data.action_desc;

 	default:

 		return NULL;

 		}

 	}

 EXPORT_C const char *UI_get0_result_string(UI_STRING *uis)

 	{

 	if (!uis)

 		return NULL;

 	switch(uis->type)

 		{

 	case UIT_PROMPT:

 	case UIT_VERIFY:

 		return uis->result_buf;

 	default:

 		return NULL;

 		}

 	}

 EXPORT_C const char *UI_get0_test_string(UI_STRING *uis)

 	{

 	if (!uis)

 		return NULL;

 	switch(uis->type)

 		{

 	case UIT_VERIFY:

 		return uis->_.string_data.test_buf;

 	default:

 		return NULL;

 		}

 	}

 EXPORT_C int UI_get_result_minsize(UI_STRING *uis)

 	{

 	if (!uis)

 		return -1;

 	switch(uis->type)

 		{

 	case UIT_PROMPT:

 	case UIT_VERIFY:

 		return uis->_.string_data.result_minsize;

 	default:

 		return -1;

 		}

 	}

 EXPORT_C int UI_get_result_maxsize(UI_STRING *uis)

 	{

 	if (!uis)

 		return -1;

 	switch(uis->type)

 		{

 	case UIT_PROMPT:

 	case UIT_VERIFY:

 		return uis->_.string_data.result_maxsize;

 	default:

 		return -1;

 		}

 	}

 EXPORT_C int UI_set_result(UI *ui, UI_STRING *uis, const char *result)

 	{

 	int l = strlen(result);

 	ui->flags &= ~UI_FLAG_REDOABLE;

 	if (!uis)

 		return -1;

 	switch (uis->type)

 		{

 	case UIT_PROMPT:

 	case UIT_VERIFY:

 		{

 		char number1[DECIMAL_SIZE(uis->_.string_data.result_minsize)+1];

 		char number2[DECIMAL_SIZE(uis->_.string_data.result_maxsize)+1];

 		BIO_snprintf(number1, sizeof(number1), "%d",

 			uis->_.string_data.result_minsize);

 		BIO_snprintf(number2, sizeof(number2), "%d",

 			uis->_.string_data.result_maxsize);

 		if (l < uis->_.string_data.result_minsize)

 			{

 			ui->flags |= UI_FLAG_REDOABLE;

 			UIerr(UI_F_UI_SET_RESULT,UI_R_RESULT_TOO_SMALL);

 			ERR_add_error_data(5,"You must type in ",

 				number1," to ",number2," characters");

 			return -1;

 			}

 		if (l > uis->_.string_data.result_maxsize)

 			{

 			ui->flags |= UI_FLAG_REDOABLE;

 			UIerr(UI_F_UI_SET_RESULT,UI_R_RESULT_TOO_LARGE);

 			ERR_add_error_data(5,"You must type in ",

 				number1," to ",number2," characters");

 			return -1;

 			}

 		}

 		if (!uis->result_buf)

 			{

 			UIerr(UI_F_UI_SET_RESULT,UI_R_NO_RESULT_BUFFER);

 			return -1;

 			}

 		BUF_strlcpy(uis->result_buf, result,

 			    uis->_.string_data.result_maxsize + 1);

 		break;

 	case UIT_BOOLEAN:

 		{

 		const char *p;

 		if (!uis->result_buf)

 			{

 			UIerr(UI_F_UI_SET_RESULT,UI_R_NO_RESULT_BUFFER);

 			return -1;

 			}

 		uis->result_buf[0] = '\0';

 		for(p = result; *p; p++)

 			{

 			if (strchr(uis->_.boolean_data.ok_chars, *p))

 				{

 				uis->result_buf[0] =

 					uis->_.boolean_data.ok_chars[0];

 				break;

 				}

 			if (strchr(uis->_.boolean_data.cancel_chars, *p))

 				{

 				uis->result_buf[0] =

 					uis->_.boolean_data.cancel_chars[0];

 				break;

 				}

 			}

 	default:

 		break;

 		}

 		}

 	return 0;

 	}