crypto/ui/ui_locl.h

   1 /*
   2  * Written by Richard Levitte (richard@levitte.org) for the OpenSSL project
   3  * 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
  69 struct ui_method_st {
  70     char *name;
  71     /*
  72      * All the functions return 1 or non-NULL for success and 0 or NULL for
  73      * failure
  74      */
  75     /*
  76      * Open whatever channel for this, be it the console, an X window or
  77      * whatever. This function should use the ex_data structure to save
  78      * intermediate data.
  79      */
  80     int (*ui_open_session) (UI *ui);
  81     int (*ui_write_string) (UI *ui, UI_STRING *uis);
  82     /*
  83      * Flush the output.  If a GUI dialog box is used, this function can be
  84      * used to actually display it.
  85      */
  86     int (*ui_flush) (UI *ui);
  87     int (*ui_read_string) (UI *ui, UI_STRING *uis);
  88     int (*ui_close_session) (UI *ui);
  89     /*
  90      * Construct a prompt in a user-defined manner.  object_desc is a textual
  91      * short description of the object, for example "pass phrase", and
  92      * object_name is the name of the object (might be a card name or a file
  93      * name. The returned string shall always be allocated on the heap with
  94      * OPENSSL_malloc(), and need to be free'd with OPENSSL_free().
  95      */
  96     char *(*ui_construct_prompt) (UI *ui, const char *object_desc,
  97                                   const char *object_name);
  98 };
  99
 100 struct ui_string_st {
 101     enum UI_string_types type;  /* Input */
 102     const char *out_string;     /* Input */
 103     int input_flags;            /* Flags from the user */
 104     /*
 105      * The following parameters are completely irrelevant for UIT_INFO, and
 106      * can therefore be set to 0 or NULL
 107      */
 108     char *result_buf;           /* Input and Output: If not NULL,
 109                                  * user-defined with size in result_maxsize.
 110                                  * Otherwise, it may be allocated by the UI
 111                                  * routine, meaning result_minsize is going
 112                                  * to be overwritten. */
 113     union {
 114         struct {
 115             int result_minsize; /* Input: minimum required size of the
 116                                  * result. */
 117             int result_maxsize; /* Input: maximum permitted size of the
 118                                  * result */
 119             const char *test_buf; /* Input: test string to verify against */
 120         } string_data;
 121         struct {
 122             const char *action_desc; /* Input */
 123             const char *ok_chars; /* Input */
 124             const char *cancel_chars; /* Input */
 125         } boolean_data;
 126     } _;
 127
 128 # define OUT_STRING_FREEABLE 0x01
 129     int flags;                  /* flags for internal use */
 130 };
 131
 132 struct ui_st {
 133     const UI_METHOD *meth;
 134     STACK_OF(UI_STRING) *strings; /* We might want to prompt for more than
 135                                    * one thing at a time, and with different
 136                                    * echoing status.  */
 137     void *user_data;
 138     CRYPTO_EX_DATA ex_data;
 139 # define UI_FLAG_REDOABLE        0x0001
 140 # define UI_FLAG_PRINT_ERRORS    0x0100
 141     int flags;
 142 };
 143
 144 #endif