1/* crypto/ui/ui.h -*- mode:C; c-file-style: "eay" -*- */
2/* Written by Richard Levitte (richard@levitte.org) for the OpenSSL
3 * project 2001.
4 */
5/* ====================================================================
6 * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in
17 *    the documentation and/or other materials provided with the
18 *    distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 *    software must display the following acknowledgment:
22 *    "This product includes software developed by the OpenSSL Project
23 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 *    endorse or promote products derived from this software without
27 *    prior written permission. For written permission, please contact
28 *    openssl-core@openssl.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 *    nor may "OpenSSL" appear in their names without prior written
32 *    permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 *    acknowledgment:
36 *    "This product includes software developed by the OpenSSL Project
37 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com).  This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59#ifndef HEADER_UI_LOCL_H
60#define HEADER_UI_LOCL_H
61
62#include <openssl/ui.h>
63#include <openssl/crypto.h>
64
65#ifdef _
66#undef _
67#endif
68
69struct ui_method_st
70	{
71	char *name;
72
73	/* All the functions return 1 or non-NULL for success and 0 or NULL
74	   for failure */
75
76	/* Open whatever channel for this, be it the console, an X window
77	   or whatever.
78	   This function should use the ex_data structure to save
79	   intermediate data. */
80	int (*ui_open_session)(UI *ui);
81
82	int (*ui_write_string)(UI *ui, UI_STRING *uis);
83
84	/* Flush the output.  If a GUI dialog box is used, this function can
85	   be used to actually display it. */
86	int (*ui_flush)(UI *ui);
87
88	int (*ui_read_string)(UI *ui, UI_STRING *uis);
89
90	int (*ui_close_session)(UI *ui);
91
92	/* Construct a prompt in a user-defined manner.  object_desc is a
93	   textual short description of the object, for example "pass phrase",
94	   and object_name is the name of the object (might be a card name or
95	   a file name.
96	   The returned string shall always be allocated on the heap with
97	   OPENSSL_malloc(), and need to be free'd with OPENSSL_free(). */
98	char *(*ui_construct_prompt)(UI *ui, const char *object_desc,
99		const char *object_name);
100	};
101
102struct ui_string_st
103	{
104	enum UI_string_types type; /* Input */
105	const char *out_string;	/* Input */
106	int input_flags;	/* Flags from the user */
107
108	/* The following parameters are completely irrelevant for UIT_INFO,
109	   and can therefore be set to 0 or NULL */
110	char *result_buf;	/* Input and Output: If not NULL, user-defined
111				   with size in result_maxsize.  Otherwise, it
112				   may be allocated by the UI routine, meaning
113				   result_minsize is going to be overwritten.*/
114	union
115		{
116		struct
117			{
118			int result_minsize;	/* Input: minimum required
119						   size of the result.
120						*/
121			int result_maxsize;	/* Input: maximum permitted
122						   size of the result */
123
124			const char *test_buf;	/* Input: test string to verify
125						   against */
126			} string_data;
127		struct
128			{
129			const char *action_desc; /* Input */
130			const char *ok_chars; /* Input */
131			const char *cancel_chars; /* Input */
132			} boolean_data;
133		} _;
134
135#define OUT_STRING_FREEABLE 0x01
136	int flags;		/* flags for internal use */
137	};
138
139struct ui_st
140	{
141	const UI_METHOD *meth;
142	STACK_OF(UI_STRING) *strings; /* We might want to prompt for more
143					 than one thing at a time, and
144					 with different echoing status.  */
145	void *user_data;
146	CRYPTO_EX_DATA ex_data;
147
148#define UI_FLAG_REDOABLE	0x0001
149#define UI_FLAG_PRINT_ERRORS	0x0100
150	int flags;
151	};
152
153#endif
154