1 /* crypto/ui/ui_lib.c -*- mode:C; c-file-style: "eay" -*- */
2 /* Written by Richard Levitte (levitte@stacken.kth.se) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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 * ====================================================================
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).
61 #include <openssl/ui.h>
62 #include <openssl/err.h>
65 IMPLEMENT_STACK_OF(UI_STRING_ST)
67 static const UI_METHOD *default_UI_meth=NULL;
68 static int ui_meth_num=0;
69 static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ui_meth=NULL;
73 return(UI_new_method(NULL));
76 UI *UI_new_method(const UI_METHOD *method)
80 ret=(UI *)OPENSSL_malloc(sizeof(UI));
83 UIerr(UI_F_UI_NEW_METHOD,ERR_R_MALLOC_FAILURE);
87 ret->meth=UI_get_default_method();
95 static void free_string(void *data)
97 UI_STRING *uis = (UI_STRING *)data;
98 if (uis->flags & OUT_STRING_FREEABLE)
99 OPENSSL_free((char *)uis->out_string);
105 sk_UI_STRING_pop_free(ui->strings,free_string);
109 static int allocate_string_stack(UI *ui)
111 if (ui->strings == NULL)
113 ui->strings=sk_UI_STRING_new_null();
114 if (ui->strings == NULL)
122 static int general_allocate_string(UI *ui, const char *prompt,
123 int prompt_freeable, enum UI_string_types type,
124 char *result_buf, int minsize, int maxsize, const char *test_buf)
130 UIerr(UI_F_GENERAL_ALLOCATE_STRING,ERR_R_PASSED_NULL_PARAMETER);
132 else if (allocate_string_stack(ui) >= 0)
134 UI_STRING *s=(UI_STRING *)OPENSSL_malloc(sizeof(UI_STRING));
135 s->out_string=prompt;
136 s->flags=prompt_freeable ? OUT_STRING_FREEABLE : 0;
138 s->result_buf=result_buf;
139 s->result_minsize=minsize;
140 s->result_maxsize=maxsize;
141 s->test_buf=test_buf;
142 ret=sk_UI_STRING_push(ui->strings, s);
147 /* Returns the index to the place in the stack or 0 for error. Uses a
148 direct reference to the prompt. */
149 int UI_add_input_string(UI *ui, const char *prompt, int echo_p,
150 char *result_buf, int minsize, int maxsize)
152 return general_allocate_string(ui, prompt, 0,
153 echo_p?UI_STRING_ECHO:UI_STRING_NOECHO,
154 result_buf, minsize, maxsize, NULL);
157 /* Same as UI_add_input_string(), excepts it takes a copy of the prompt */
158 int UI_dup_input_string(UI *ui, const char *prompt, int echo_p,
159 char *result_buf, int minsize, int maxsize)
161 char *prompt_copy=NULL;
165 prompt_copy=strdup(prompt);
166 if (prompt_copy == NULL)
168 UIerr(UI_F_UI_DUP_INPUT_STRING,ERR_R_MALLOC_FAILURE);
173 return general_allocate_string(ui, prompt, 1,
174 echo_p?UI_STRING_ECHO:UI_STRING_NOECHO,
175 result_buf, minsize, maxsize, NULL);
178 int UI_add_verify_string(UI *ui, const char *prompt, int echo_p,
179 char *result_buf, int minsize, int maxsize, const char *test_buf)
181 return general_allocate_string(ui, prompt, 0,
182 echo_p?UI_VERIFY_ECHO:UI_VERIFY_NOECHO,
183 result_buf, minsize, maxsize, test_buf);
186 int UI_dup_verify_string(UI *ui, const char *prompt, int echo_p,
187 char *result_buf, int minsize, int maxsize, const char *test_buf)
189 char *prompt_copy=NULL;
193 prompt_copy=strdup(prompt);
194 if (prompt_copy == NULL)
196 UIerr(UI_F_UI_DUP_VERIFY_STRING,ERR_R_MALLOC_FAILURE);
201 return general_allocate_string(ui, prompt, 1,
202 echo_p?UI_VERIFY_ECHO:UI_VERIFY_NOECHO,
203 result_buf, minsize, maxsize, test_buf);
206 int UI_add_info_string(UI *ui, const char *text)
208 return general_allocate_string(ui, text, 0, UI_INFO, NULL, 0, 0, NULL);
211 int UI_dup_info_string(UI *ui, const char *text)
213 char *text_copy=NULL;
217 text_copy=strdup(text);
218 if (text_copy == NULL)
220 UIerr(UI_F_UI_DUP_INFO_STRING,ERR_R_MALLOC_FAILURE);
225 return general_allocate_string(ui, text, 1, UI_INFO, NULL, 0, 0, NULL);
228 int UI_add_error_string(UI *ui, const char *text)
230 return general_allocate_string(ui, text, 0, UI_ERROR, NULL, 0, 0,
234 int UI_dup_error_string(UI *ui, const char *text)
236 char *text_copy=NULL;
240 text_copy=strdup(text);
241 if (text_copy == NULL)
243 UIerr(UI_F_UI_DUP_ERROR_STRING,ERR_R_MALLOC_FAILURE);
247 return general_allocate_string(ui, text_copy, 1, UI_ERROR, NULL, 0, 0,
251 const char *UI_get0_result(UI *ui, int i)
255 UIerr(UI_F_UI_GET0_RESULT,UI_R_INDEX_TOO_SMALL);
258 if (i >= sk_UI_STRING_num(ui->strings))
260 UIerr(UI_F_UI_GET0_RESULT,UI_R_INDEX_TOO_LARGE);
263 return UI_get0_result_string(sk_UI_STRING_value(ui->strings, i));
266 int UI_process(UI *ui)
270 if (ui->meth->ui_open_session && !ui->meth->ui_open_session(ui))
273 for(i=0; i<sk_UI_STRING_num(ui->strings); i++)
275 if (ui->meth->ui_write_string
276 && !ui->meth->ui_write_string(ui,
277 sk_UI_STRING_value(ui->strings, i)))
284 for(i=0; i<sk_UI_STRING_num(ui->strings); i++)
286 if (ui->meth->ui_read_string
287 && !ui->meth->ui_read_string(ui,
288 sk_UI_STRING_value(ui->strings, i)))
295 if (ui->meth->ui_close_session && !ui->meth->ui_close_session(ui))
300 int UI_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
301 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
304 return(CRYPTO_get_ex_new_index(ui_meth_num-1,
305 &ui_meth,argl,argp,new_func,dup_func,free_func));
308 int UI_set_ex_data(UI *r, int idx, void *arg)
310 return(CRYPTO_set_ex_data(&r->ex_data,idx,arg));
313 void *UI_get_ex_data(UI *r, int idx)
315 return(CRYPTO_get_ex_data(&r->ex_data,idx));
318 void UI_set_default_method(const UI_METHOD *meth)
320 default_UI_meth=meth;
323 const UI_METHOD *UI_get_default_method(void)
325 if (default_UI_meth == NULL)
327 default_UI_meth=UI_OpenSSL();
329 return default_UI_meth;
332 const UI_METHOD *UI_get_method(UI *ui)
337 const UI_METHOD *UI_set_method(UI *ui, const UI_METHOD *meth)
344 UI_METHOD *UI_create_method(void)
346 return (UI_METHOD *)OPENSSL_malloc(sizeof(UI_METHOD));
349 int UI_method_set_opener(UI_METHOD *method, int (*opener)(UI *ui))
353 method->ui_open_session = opener;
360 int UI_method_set_writer(UI_METHOD *method, int (*writer)(UI *ui, UI_STRING *uis))
364 method->ui_write_string = writer;
371 int UI_method_set_reader(UI_METHOD *method, int (*reader)(UI *ui, UI_STRING *uis))
375 method->ui_read_string = reader;
382 int UI_method_set_closer(UI_METHOD *method, int (*closer)(UI *ui))
386 method->ui_close_session = closer;
393 int (*UI_method_get_opener(UI_METHOD *method))(UI*)
396 return method->ui_open_session;
401 int (*UI_method_get_writer(UI_METHOD *method))(UI*,UI_STRING*)
404 return method->ui_write_string;
409 int (*UI_method_get_reader(UI_METHOD *method))(UI*,UI_STRING*)
412 return method->ui_read_string;
417 int (*UI_method_get_closer(UI_METHOD *method))(UI*)
420 return method->ui_close_session;
425 enum UI_string_types UI_get_string_type(UI_STRING *uis)
432 const char *UI_get0_output_string(UI_STRING *uis)
436 return uis->out_string;
439 const char *UI_get0_result_string(UI_STRING *uis)
446 case UI_STRING_NOECHO:
448 case UI_VERIFY_NOECHO:
449 return uis->result_buf;
455 const char *UI_get0_test_string(UI_STRING *uis)
459 return uis->test_buf;
462 int UI_get_result_minsize(UI_STRING *uis)
466 return uis->result_minsize;
469 int UI_get_result_maxsize(UI_STRING *uis)
473 return uis->result_maxsize;
476 int UI_set_result(UI_STRING *uis, char *result)
478 int l = strlen(result);
482 if (l < uis->result_minsize)
484 UIerr(UI_F_UI_SET_RESULT,UI_R_RESULT_TOO_SMALL);
487 if (l > uis->result_maxsize)
489 UIerr(UI_F_UI_SET_RESULT,UI_R_RESULT_TOO_LARGE);
493 if (!uis->result_buf)
495 uis->result_buf = OPENSSL_malloc(uis->result_maxsize+1);
498 if (!uis->result_buf)
500 UIerr(UI_F_UI_NEW_METHOD,ERR_R_MALLOC_FAILURE);
504 strcpy(uis->result_buf, result);