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ui_locl.h

/* crypto/ui/ui.h -*- 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).
 *
 */

#ifndef HEADER_UI_LOCL_H
#define HEADER_UI_LOCL_H

#include <openssl/ui.h>
#include <openssl/crypto.h>

#ifdef _
#undef _
#endif

struct ui_method_st
      {
      char *name;

      /* All the functions return 1 or non-NULL for success and 0 or NULL
         for failure */

      /* Open whatever channel for this, be it the console, an X window
         or whatever.
         This function should use the ex_data structure to save
         intermediate data. */
      int (*ui_open_session)(UI *ui);

      int (*ui_write_string)(UI *ui, UI_STRING *uis);

      /* Flush the output.  If a GUI dialog box is used, this function can
         be used to actually display it. */
      int (*ui_flush)(UI *ui);

      int (*ui_read_string)(UI *ui, UI_STRING *uis);

      int (*ui_close_session)(UI *ui);

      /* Construct a prompt in a user-defined manner.  object_desc is a
         textual short description of the object, for example "pass phrase",
         and object_name is the name of the object (might be a card name or
         a file name.
         The returned string shall always be allocated on the heap with
         OPENSSL_malloc(), and need to be free'd with OPENSSL_free(). */
      char *(*ui_construct_prompt)(UI *ui, const char *object_desc,
            const char *object_name);
      };

struct ui_string_st
      {
      enum UI_string_types type; /* Input */
      const char *out_string; /* Input */
      int input_flags;  /* Flags from the user */

      /* The following parameters are completely irrelevant for UIT_INFO,
         and can therefore be set to 0 or NULL */
      char *result_buf; /* Input and Output: If not NULL, user-defined
                           with size in result_maxsize.  Otherwise, it
                           may be allocated by the UI routine, meaning
                           result_minsize is going to be overwritten.*/
      union
            {
            struct
                  {
                  int result_minsize;     /* Input: minimum required
                                       size of the result.
                                    */
                  int result_maxsize;     /* Input: maximum permitted
                                       size of the result */

                  const char *test_buf;   /* Input: test string to verify
                                       against */
                  } string_data;
            struct
                  {
                  const char *action_desc; /* Input */
                  const char *ok_chars; /* Input */
                  const char *cancel_chars; /* Input */
                  } boolean_data;
            } _;

#define OUT_STRING_FREEABLE 0x01
      int flags;        /* flags for internal use */
      };

struct ui_st
      {
      const UI_METHOD *meth;
      STACK_OF(UI_STRING) *strings; /* We might want to prompt for more
                               than one thing at a time, and
                               with different echoing status.  */
      void *user_data;
      CRYPTO_EX_DATA ex_data;

#define UI_FLAG_REDOABLE      0x0001
#define UI_FLAG_PRINT_ERRORS  0x0100
      int flags;
      };

#endif

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