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).
59 #include <openssl/e_os2.h>
60 /* The following defines enable the declaration of strdup(), which is an
61 extended function according to X/Open. */
62 #ifdef OPENSSL_SYS_VMS_DECC
63 # define _XOPEN_SOURCE_EXTENDED
65 #ifdef OPENSSL_SYS_UNIX
66 # define _XOPEN_SOURCE
67 # define _XOPEN_SOURCE_EXTENDED /* For Linux and probably anything GNU */
71 #include <openssl/ui.h>
72 #include <openssl/err.h>
75 IMPLEMENT_STACK_OF(UI_STRING_ST)
77 static const UI_METHOD *default_UI_meth=NULL;
78 static int ui_meth_num=0;
79 static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ui_meth=NULL;
83 return(UI_new_method(NULL));
86 UI *UI_new_method(const UI_METHOD *method)
90 ret=(UI *)OPENSSL_malloc(sizeof(UI));
93 UIerr(UI_F_UI_NEW_METHOD,ERR_R_MALLOC_FAILURE);
97 ret->meth=UI_get_default_method();
103 CRYPTO_new_ex_data(ui_meth,ret,&ret->ex_data);
107 static void free_string(UI_STRING *uis)
109 if (uis->flags & OUT_STRING_FREEABLE)
110 OPENSSL_free((char *)uis->out_string);
116 sk_UI_STRING_pop_free(ui->strings,free_string);
120 static int allocate_string_stack(UI *ui)
122 if (ui->strings == NULL)
124 ui->strings=sk_UI_STRING_new_null();
125 if (ui->strings == NULL)
133 static int general_allocate_string(UI *ui, const char *prompt,
134 int prompt_freeable, enum UI_string_types type,
135 char *result_buf, int minsize, int maxsize, const char *test_buf)
141 UIerr(UI_F_GENERAL_ALLOCATE_STRING,ERR_R_PASSED_NULL_PARAMETER);
143 else if (allocate_string_stack(ui) >= 0)
145 UI_STRING *s=(UI_STRING *)OPENSSL_malloc(sizeof(UI_STRING));
146 s->out_string=prompt;
147 s->flags=prompt_freeable ? OUT_STRING_FREEABLE : 0;
149 s->result_buf=result_buf;
150 s->result_minsize=minsize;
151 s->result_maxsize=maxsize;
152 s->test_buf=test_buf;
153 ret=sk_UI_STRING_push(ui->strings, s);
158 /* Returns the index to the place in the stack or 0 for error. Uses a
159 direct reference to the prompt. */
160 int UI_add_input_string(UI *ui, const char *prompt, int echo_p,
161 char *result_buf, int minsize, int maxsize)
163 return general_allocate_string(ui, prompt, 0,
164 echo_p?UI_STRING_ECHO:UI_STRING_NOECHO,
165 result_buf, minsize, maxsize, NULL);
168 /* Same as UI_add_input_string(), excepts it takes a copy of the prompt */
169 int UI_dup_input_string(UI *ui, const char *prompt, int echo_p,
170 char *result_buf, int minsize, int maxsize)
172 char *prompt_copy=NULL;
176 prompt_copy=strdup(prompt);
177 if (prompt_copy == NULL)
179 UIerr(UI_F_UI_DUP_INPUT_STRING,ERR_R_MALLOC_FAILURE);
184 return general_allocate_string(ui, prompt, 1,
185 echo_p?UI_STRING_ECHO:UI_STRING_NOECHO,
186 result_buf, minsize, maxsize, NULL);
189 int UI_add_verify_string(UI *ui, const char *prompt, int echo_p,
190 char *result_buf, int minsize, int maxsize, const char *test_buf)
192 return general_allocate_string(ui, prompt, 0,
193 echo_p?UI_VERIFY_ECHO:UI_VERIFY_NOECHO,
194 result_buf, minsize, maxsize, test_buf);
197 int UI_dup_verify_string(UI *ui, const char *prompt, int echo_p,
198 char *result_buf, int minsize, int maxsize, const char *test_buf)
200 char *prompt_copy=NULL;
204 prompt_copy=strdup(prompt);
205 if (prompt_copy == NULL)
207 UIerr(UI_F_UI_DUP_VERIFY_STRING,ERR_R_MALLOC_FAILURE);
212 return general_allocate_string(ui, prompt, 1,
213 echo_p?UI_VERIFY_ECHO:UI_VERIFY_NOECHO,
214 result_buf, minsize, maxsize, test_buf);
217 int UI_add_info_string(UI *ui, const char *text)
219 return general_allocate_string(ui, text, 0, UI_INFO, NULL, 0, 0, NULL);
222 int UI_dup_info_string(UI *ui, const char *text)
224 char *text_copy=NULL;
228 text_copy=strdup(text);
229 if (text_copy == NULL)
231 UIerr(UI_F_UI_DUP_INFO_STRING,ERR_R_MALLOC_FAILURE);
236 return general_allocate_string(ui, text, 1, UI_INFO, NULL, 0, 0, NULL);
239 int UI_add_error_string(UI *ui, const char *text)
241 return general_allocate_string(ui, text, 0, UI_ERROR, NULL, 0, 0,
245 int UI_dup_error_string(UI *ui, const char *text)
247 char *text_copy=NULL;
251 text_copy=strdup(text);
252 if (text_copy == NULL)
254 UIerr(UI_F_UI_DUP_ERROR_STRING,ERR_R_MALLOC_FAILURE);
258 return general_allocate_string(ui, text_copy, 1, UI_ERROR, NULL, 0, 0,
262 void *UI_add_user_data(UI *ui, void *user_data)
264 void *old_data = ui->user_data;
265 ui->user_data = user_data;
269 void *UI_get0_user_data(UI *ui)
271 return ui->user_data;
274 const char *UI_get0_result(UI *ui, int i)
278 UIerr(UI_F_UI_GET0_RESULT,UI_R_INDEX_TOO_SMALL);
281 if (i >= sk_UI_STRING_num(ui->strings))
283 UIerr(UI_F_UI_GET0_RESULT,UI_R_INDEX_TOO_LARGE);
286 return UI_get0_result_string(sk_UI_STRING_value(ui->strings, i));
289 int UI_process(UI *ui)
293 if (ui->meth->ui_open_session && !ui->meth->ui_open_session(ui))
296 for(i=0; i<sk_UI_STRING_num(ui->strings); i++)
298 if (ui->meth->ui_write_string
299 && !ui->meth->ui_write_string(ui,
300 sk_UI_STRING_value(ui->strings, i)))
307 for(i=0; i<sk_UI_STRING_num(ui->strings); i++)
309 if (ui->meth->ui_read_string
310 && !ui->meth->ui_read_string(ui,
311 sk_UI_STRING_value(ui->strings, i)))
318 if (ui->meth->ui_close_session && !ui->meth->ui_close_session(ui))
323 int UI_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
324 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
327 return(CRYPTO_get_ex_new_index(ui_meth_num-1,
328 &ui_meth,argl,argp,new_func,dup_func,free_func));
331 int UI_set_ex_data(UI *r, int idx, void *arg)
333 return(CRYPTO_set_ex_data(&r->ex_data,idx,arg));
336 void *UI_get_ex_data(UI *r, int idx)
338 return(CRYPTO_get_ex_data(&r->ex_data,idx));
341 void UI_set_default_method(const UI_METHOD *meth)
343 default_UI_meth=meth;
346 const UI_METHOD *UI_get_default_method(void)
348 if (default_UI_meth == NULL)
350 default_UI_meth=UI_OpenSSL();
352 return default_UI_meth;
355 const UI_METHOD *UI_get_method(UI *ui)
360 const UI_METHOD *UI_set_method(UI *ui, const UI_METHOD *meth)
367 UI_METHOD *UI_create_method(void)
369 return (UI_METHOD *)OPENSSL_malloc(sizeof(UI_METHOD));
372 int UI_method_set_opener(UI_METHOD *method, int (*opener)(UI *ui))
376 method->ui_open_session = opener;
383 int UI_method_set_writer(UI_METHOD *method, int (*writer)(UI *ui, UI_STRING *uis))
387 method->ui_write_string = writer;
394 int UI_method_set_reader(UI_METHOD *method, int (*reader)(UI *ui, UI_STRING *uis))
398 method->ui_read_string = reader;
405 int UI_method_set_closer(UI_METHOD *method, int (*closer)(UI *ui))
409 method->ui_close_session = closer;
416 int (*UI_method_get_opener(UI_METHOD *method))(UI*)
419 return method->ui_open_session;
424 int (*UI_method_get_writer(UI_METHOD *method))(UI*,UI_STRING*)
427 return method->ui_write_string;
432 int (*UI_method_get_reader(UI_METHOD *method))(UI*,UI_STRING*)
435 return method->ui_read_string;
440 int (*UI_method_get_closer(UI_METHOD *method))(UI*)
443 return method->ui_close_session;
448 enum UI_string_types UI_get_string_type(UI_STRING *uis)
455 const char *UI_get0_output_string(UI_STRING *uis)
459 return uis->out_string;
462 const char *UI_get0_result_string(UI_STRING *uis)
469 case UI_STRING_NOECHO:
471 case UI_VERIFY_NOECHO:
472 return uis->result_buf;
478 const char *UI_get0_test_string(UI_STRING *uis)
482 return uis->test_buf;
485 int UI_get_result_minsize(UI_STRING *uis)
489 return uis->result_minsize;
492 int UI_get_result_maxsize(UI_STRING *uis)
496 return uis->result_maxsize;
499 int UI_set_result(UI_STRING *uis, char *result)
501 int l = strlen(result);
505 if (l < uis->result_minsize)
507 UIerr(UI_F_UI_SET_RESULT,UI_R_RESULT_TOO_SMALL);
510 if (l > uis->result_maxsize)
512 UIerr(UI_F_UI_SET_RESULT,UI_R_RESULT_TOO_LARGE);
516 if (!uis->result_buf)
518 uis->result_buf = OPENSSL_malloc(uis->result_maxsize+1);
521 if (!uis->result_buf)
523 UIerr(UI_F_UI_NEW_METHOD,ERR_R_MALLOC_FAILURE);
527 strcpy(uis->result_buf, result);