1/*
2 * Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#ifndef OSSL_CRYPTO_UI_LOCAL_H
11# define OSSL_CRYPTO_UI_LOCAL_H
12
13# include <openssl/ui.h>
14# include <openssl/crypto.h>
15
16# ifdef _
17# undef _
18# endif
19
20struct ui_method_st {
21 char *name;
22 /*
23 * All the functions return 1 or non-NULL for success and 0 or NULL for
24 * failure
25 */
26 /*
27 * Open whatever channel for this, be it the console, an X window or
28 * whatever. This function should use the ex_data structure to save
29 * intermediate data.
30 */
31 int (*ui_open_session) (UI *ui);
32 int (*ui_write_string) (UI *ui, UI_STRING *uis);
33 /*
34 * Flush the output. If a GUI dialog box is used, this function can be
35 * used to actually display it.
36 */
37 int (*ui_flush) (UI *ui);
38 int (*ui_read_string) (UI *ui, UI_STRING *uis);
39 int (*ui_close_session) (UI *ui);
40 /*
41 * Duplicate the ui_data that often comes alongside a ui_method. This
42 * allows some backends to save away UI information for later use.
43 */
44 void *(*ui_duplicate_data) (UI *ui, void *ui_data);
45 void (*ui_destroy_data) (UI *ui, void *ui_data);
46 /*
47 * Construct a prompt in a user-defined manner. object_desc is a textual
48 * short description of the object, for example "pass phrase", and
49 * object_name is the name of the object (might be a card name or a file
50 * name. The returned string shall always be allocated on the heap with
51 * OPENSSL_malloc(), and need to be free'd with OPENSSL_free().
52 */
53 char *(*ui_construct_prompt) (UI *ui, const char *object_desc,
54 const char *object_name);
55 /*
56 * UI_METHOD specific application data.
57 */
58 CRYPTO_EX_DATA ex_data;
59};
60
61struct ui_string_st {
62 enum UI_string_types type; /* Input */
63 const char *out_string; /* Input */
64 int input_flags; /* Flags from the user */
65 /*
66 * The following parameters are completely irrelevant for UIT_INFO, and
67 * can therefore be set to 0 or NULL
68 */
69 char *result_buf; /* Input and Output: If not NULL,
70 * user-defined with size in result_maxsize.
71 * Otherwise, it may be allocated by the UI
72 * routine, meaning result_minsize is going
73 * to be overwritten. */
74 size_t result_len;
75 union {
76 struct {
77 int result_minsize; /* Input: minimum required size of the
78 * result. */
79 int result_maxsize; /* Input: maximum permitted size of the
80 * result */
81 const char *test_buf; /* Input: test string to verify against */
82 } string_data;
83 struct {
84 const char *action_desc; /* Input */
85 const char *ok_chars; /* Input */
86 const char *cancel_chars; /* Input */
87 } boolean_data;
88 } _;
89
90# define OUT_STRING_FREEABLE 0x01
91 int flags; /* flags for internal use */
92};
93
94struct ui_st {
95 const UI_METHOD *meth;
96 STACK_OF(UI_STRING) *strings; /* We might want to prompt for more than
97 * one thing at a time, and with different
98 * echoing status. */
99 void *user_data;
100 CRYPTO_EX_DATA ex_data;
101# define UI_FLAG_REDOABLE 0x0001
102# define UI_FLAG_DUPL_DATA 0x0002 /* user_data was duplicated */
103# define UI_FLAG_PRINT_ERRORS 0x0100
104 int flags;
105
106 CRYPTO_RWLOCK *lock;
107};
108
109#endif
110