1 /* 2 * Copyright 2001-2018 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (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 #include <string.h> 11 #include "internal/cryptlib.h" 12 #include <openssl/e_os2.h> 13 #include <openssl/buffer.h> 14 #include <openssl/ui.h> 15 #include <openssl/err.h> 16 #include "ui_locl.h" 17 18 UI *UI_new(void) 19 { 20 return UI_new_method(NULL); 21 } 22 23 UI *UI_new_method(const UI_METHOD *method) 24 { 25 UI *ret = OPENSSL_zalloc(sizeof(*ret)); 26 27 if (ret == NULL) { 28 UIerr(UI_F_UI_NEW_METHOD, ERR_R_MALLOC_FAILURE); 29 return NULL; 30 } 31 32 ret->lock = CRYPTO_THREAD_lock_new(); 33 if (ret->lock == NULL) { 34 UIerr(UI_F_UI_NEW_METHOD, ERR_R_MALLOC_FAILURE); 35 OPENSSL_free(ret); 36 return NULL; 37 } 38 39 if (method == NULL) 40 method = UI_get_default_method(); 41 if (method == NULL) 42 method = UI_null(); 43 ret->meth = method; 44 45 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_UI, ret, &ret->ex_data)) { 46 OPENSSL_free(ret); 47 return NULL; 48 } 49 return ret; 50 } 51 52 static void free_string(UI_STRING *uis) 53 { 54 if (uis->flags & OUT_STRING_FREEABLE) { 55 OPENSSL_free((char *)uis->out_string); 56 switch (uis->type) { 57 case UIT_BOOLEAN: 58 OPENSSL_free((char *)uis->_.boolean_data.action_desc); 59 OPENSSL_free((char *)uis->_.boolean_data.ok_chars); 60 OPENSSL_free((char *)uis->_.boolean_data.cancel_chars); 61 break; 62 case UIT_NONE: 63 case UIT_PROMPT: 64 case UIT_VERIFY: 65 case UIT_ERROR: 66 case UIT_INFO: 67 break; 68 } 69 } 70 OPENSSL_free(uis); 71 } 72 73 void UI_free(UI *ui) 74 { 75 if (ui == NULL) 76 return; 77 if ((ui->flags & UI_FLAG_DUPL_DATA) != 0) { 78 ui->meth->ui_destroy_data(ui, ui->user_data); 79 } 80 sk_UI_STRING_pop_free(ui->strings, free_string); 81 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_UI, ui, &ui->ex_data); 82 CRYPTO_THREAD_lock_free(ui->lock); 83 OPENSSL_free(ui); 84 } 85 86 static int allocate_string_stack(UI *ui) 87 { 88 if (ui->strings == NULL) { 89 ui->strings = sk_UI_STRING_new_null(); 90 if (ui->strings == NULL) { 91 return -1; 92 } 93 } 94 return 0; 95 } 96 97 static UI_STRING *general_allocate_prompt(UI *ui, const char *prompt, 98 int prompt_freeable, 99 enum UI_string_types type, 100 int input_flags, char *result_buf) 101 { 102 UI_STRING *ret = NULL; 103 104 if (prompt == NULL) { 105 UIerr(UI_F_GENERAL_ALLOCATE_PROMPT, ERR_R_PASSED_NULL_PARAMETER); 106 } else if ((type == UIT_PROMPT || type == UIT_VERIFY 107 || type == UIT_BOOLEAN) && result_buf == NULL) { 108 UIerr(UI_F_GENERAL_ALLOCATE_PROMPT, UI_R_NO_RESULT_BUFFER); 109 } else if ((ret = OPENSSL_malloc(sizeof(*ret))) != NULL) { 110 ret->out_string = prompt; 111 ret->flags = prompt_freeable ? OUT_STRING_FREEABLE : 0; 112 ret->input_flags = input_flags; 113 ret->type = type; 114 ret->result_buf = result_buf; 115 } 116 return ret; 117 } 118 119 static int general_allocate_string(UI *ui, const char *prompt, 120 int prompt_freeable, 121 enum UI_string_types type, int input_flags, 122 char *result_buf, int minsize, int maxsize, 123 const char *test_buf) 124 { 125 int ret = -1; 126 UI_STRING *s = general_allocate_prompt(ui, prompt, prompt_freeable, 127 type, input_flags, result_buf); 128 129 if (s != NULL) { 130 if (allocate_string_stack(ui) >= 0) { 131 s->_.string_data.result_minsize = minsize; 132 s->_.string_data.result_maxsize = maxsize; 133 s->_.string_data.test_buf = test_buf; 134 ret = sk_UI_STRING_push(ui->strings, s); 135 /* sk_push() returns 0 on error. Let's adapt that */ 136 if (ret <= 0) { 137 ret--; 138 free_string(s); 139 } 140 } else 141 free_string(s); 142 } 143 return ret; 144 } 145 146 static int general_allocate_boolean(UI *ui, 147 const char *prompt, 148 const char *action_desc, 149 const char *ok_chars, 150 const char *cancel_chars, 151 int prompt_freeable, 152 enum UI_string_types type, 153 int input_flags, char *result_buf) 154 { 155 int ret = -1; 156 UI_STRING *s; 157 const char *p; 158 159 if (ok_chars == NULL) { 160 UIerr(UI_F_GENERAL_ALLOCATE_BOOLEAN, ERR_R_PASSED_NULL_PARAMETER); 161 } else if (cancel_chars == NULL) { 162 UIerr(UI_F_GENERAL_ALLOCATE_BOOLEAN, ERR_R_PASSED_NULL_PARAMETER); 163 } else { 164 for (p = ok_chars; *p != '\0'; p++) { 165 if (strchr(cancel_chars, *p) != NULL) { 166 UIerr(UI_F_GENERAL_ALLOCATE_BOOLEAN, 167 UI_R_COMMON_OK_AND_CANCEL_CHARACTERS); 168 } 169 } 170 171 s = general_allocate_prompt(ui, prompt, prompt_freeable, 172 type, input_flags, result_buf); 173 174 if (s != NULL) { 175 if (allocate_string_stack(ui) >= 0) { 176 s->_.boolean_data.action_desc = action_desc; 177 s->_.boolean_data.ok_chars = ok_chars; 178 s->_.boolean_data.cancel_chars = cancel_chars; 179 ret = sk_UI_STRING_push(ui->strings, s); 180 /* 181 * sk_push() returns 0 on error. Let's adapt that 182 */ 183 if (ret <= 0) { 184 ret--; 185 free_string(s); 186 } 187 } else 188 free_string(s); 189 } 190 } 191 return ret; 192 } 193 194 /* 195 * Returns the index to the place in the stack or -1 for error. Uses a 196 * direct reference to the prompt. 197 */ 198 int UI_add_input_string(UI *ui, const char *prompt, int flags, 199 char *result_buf, int minsize, int maxsize) 200 { 201 return general_allocate_string(ui, prompt, 0, 202 UIT_PROMPT, flags, result_buf, minsize, 203 maxsize, NULL); 204 } 205 206 /* Same as UI_add_input_string(), excepts it takes a copy of the prompt */ 207 int UI_dup_input_string(UI *ui, const char *prompt, int flags, 208 char *result_buf, int minsize, int maxsize) 209 { 210 char *prompt_copy = NULL; 211 212 if (prompt != NULL) { 213 prompt_copy = OPENSSL_strdup(prompt); 214 if (prompt_copy == NULL) { 215 UIerr(UI_F_UI_DUP_INPUT_STRING, ERR_R_MALLOC_FAILURE); 216 return 0; 217 } 218 } 219 220 return general_allocate_string(ui, prompt_copy, 1, 221 UIT_PROMPT, flags, result_buf, minsize, 222 maxsize, NULL); 223 } 224 225 int UI_add_verify_string(UI *ui, const char *prompt, int flags, 226 char *result_buf, int minsize, int maxsize, 227 const char *test_buf) 228 { 229 return general_allocate_string(ui, prompt, 0, 230 UIT_VERIFY, flags, result_buf, minsize, 231 maxsize, test_buf); 232 } 233 234 int UI_dup_verify_string(UI *ui, const char *prompt, int flags, 235 char *result_buf, int minsize, int maxsize, 236 const char *test_buf) 237 { 238 char *prompt_copy = NULL; 239 240 if (prompt != NULL) { 241 prompt_copy = OPENSSL_strdup(prompt); 242 if (prompt_copy == NULL) { 243 UIerr(UI_F_UI_DUP_VERIFY_STRING, ERR_R_MALLOC_FAILURE); 244 return -1; 245 } 246 } 247 248 return general_allocate_string(ui, prompt_copy, 1, 249 UIT_VERIFY, flags, result_buf, minsize, 250 maxsize, test_buf); 251 } 252 253 int UI_add_input_boolean(UI *ui, const char *prompt, const char *action_desc, 254 const char *ok_chars, const char *cancel_chars, 255 int flags, char *result_buf) 256 { 257 return general_allocate_boolean(ui, prompt, action_desc, 258 ok_chars, cancel_chars, 0, UIT_BOOLEAN, 259 flags, result_buf); 260 } 261 262 int UI_dup_input_boolean(UI *ui, const char *prompt, const char *action_desc, 263 const char *ok_chars, const char *cancel_chars, 264 int flags, char *result_buf) 265 { 266 char *prompt_copy = NULL; 267 char *action_desc_copy = NULL; 268 char *ok_chars_copy = NULL; 269 char *cancel_chars_copy = NULL; 270 271 if (prompt != NULL) { 272 prompt_copy = OPENSSL_strdup(prompt); 273 if (prompt_copy == NULL) { 274 UIerr(UI_F_UI_DUP_INPUT_BOOLEAN, ERR_R_MALLOC_FAILURE); 275 goto err; 276 } 277 } 278 279 if (action_desc != NULL) { 280 action_desc_copy = OPENSSL_strdup(action_desc); 281 if (action_desc_copy == NULL) { 282 UIerr(UI_F_UI_DUP_INPUT_BOOLEAN, ERR_R_MALLOC_FAILURE); 283 goto err; 284 } 285 } 286 287 if (ok_chars != NULL) { 288 ok_chars_copy = OPENSSL_strdup(ok_chars); 289 if (ok_chars_copy == NULL) { 290 UIerr(UI_F_UI_DUP_INPUT_BOOLEAN, ERR_R_MALLOC_FAILURE); 291 goto err; 292 } 293 } 294 295 if (cancel_chars != NULL) { 296 cancel_chars_copy = OPENSSL_strdup(cancel_chars); 297 if (cancel_chars_copy == NULL) { 298 UIerr(UI_F_UI_DUP_INPUT_BOOLEAN, ERR_R_MALLOC_FAILURE); 299 goto err; 300 } 301 } 302 303 return general_allocate_boolean(ui, prompt_copy, action_desc_copy, 304 ok_chars_copy, cancel_chars_copy, 1, 305 UIT_BOOLEAN, flags, result_buf); 306 err: 307 OPENSSL_free(prompt_copy); 308 OPENSSL_free(action_desc_copy); 309 OPENSSL_free(ok_chars_copy); 310 OPENSSL_free(cancel_chars_copy); 311 return -1; 312 } 313 314 int UI_add_info_string(UI *ui, const char *text) 315 { 316 return general_allocate_string(ui, text, 0, UIT_INFO, 0, NULL, 0, 0, 317 NULL); 318 } 319 320 int UI_dup_info_string(UI *ui, const char *text) 321 { 322 char *text_copy = NULL; 323 324 if (text != NULL) { 325 text_copy = OPENSSL_strdup(text); 326 if (text_copy == NULL) { 327 UIerr(UI_F_UI_DUP_INFO_STRING, ERR_R_MALLOC_FAILURE); 328 return -1; 329 } 330 } 331 332 return general_allocate_string(ui, text_copy, 1, UIT_INFO, 0, NULL, 333 0, 0, NULL); 334 } 335 336 int UI_add_error_string(UI *ui, const char *text) 337 { 338 return general_allocate_string(ui, text, 0, UIT_ERROR, 0, NULL, 0, 0, 339 NULL); 340 } 341 342 int UI_dup_error_string(UI *ui, const char *text) 343 { 344 char *text_copy = NULL; 345 346 if (text != NULL) { 347 text_copy = OPENSSL_strdup(text); 348 if (text_copy == NULL) { 349 UIerr(UI_F_UI_DUP_ERROR_STRING, ERR_R_MALLOC_FAILURE); 350 return -1; 351 } 352 } 353 return general_allocate_string(ui, text_copy, 1, UIT_ERROR, 0, NULL, 354 0, 0, NULL); 355 } 356 357 char *UI_construct_prompt(UI *ui, const char *object_desc, 358 const char *object_name) 359 { 360 char *prompt = NULL; 361 362 if (ui->meth->ui_construct_prompt != NULL) 363 prompt = ui->meth->ui_construct_prompt(ui, object_desc, object_name); 364 else { 365 char prompt1[] = "Enter "; 366 char prompt2[] = " for "; 367 char prompt3[] = ":"; 368 int len = 0; 369 370 if (object_desc == NULL) 371 return NULL; 372 len = sizeof(prompt1) - 1 + strlen(object_desc); 373 if (object_name != NULL) 374 len += sizeof(prompt2) - 1 + strlen(object_name); 375 len += sizeof(prompt3) - 1; 376 377 if ((prompt = OPENSSL_malloc(len + 1)) == NULL) { 378 UIerr(UI_F_UI_CONSTRUCT_PROMPT, ERR_R_MALLOC_FAILURE); 379 return NULL; 380 } 381 OPENSSL_strlcpy(prompt, prompt1, len + 1); 382 OPENSSL_strlcat(prompt, object_desc, len + 1); 383 if (object_name != NULL) { 384 OPENSSL_strlcat(prompt, prompt2, len + 1); 385 OPENSSL_strlcat(prompt, object_name, len + 1); 386 } 387 OPENSSL_strlcat(prompt, prompt3, len + 1); 388 } 389 return prompt; 390 } 391 392 void *UI_add_user_data(UI *ui, void *user_data) 393 { 394 void *old_data = ui->user_data; 395 396 if ((ui->flags & UI_FLAG_DUPL_DATA) != 0) { 397 ui->meth->ui_destroy_data(ui, old_data); 398 old_data = NULL; 399 } 400 ui->user_data = user_data; 401 ui->flags &= ~UI_FLAG_DUPL_DATA; 402 return old_data; 403 } 404 405 int UI_dup_user_data(UI *ui, void *user_data) 406 { 407 void *duplicate = NULL; 408 409 if (ui->meth->ui_duplicate_data == NULL 410 || ui->meth->ui_destroy_data == NULL) { 411 UIerr(UI_F_UI_DUP_USER_DATA, UI_R_USER_DATA_DUPLICATION_UNSUPPORTED); 412 return -1; 413 } 414 415 duplicate = ui->meth->ui_duplicate_data(ui, user_data); 416 if (duplicate == NULL) { 417 UIerr(UI_F_UI_DUP_USER_DATA, ERR_R_MALLOC_FAILURE); 418 return -1; 419 } 420 421 (void)UI_add_user_data(ui, duplicate); 422 ui->flags |= UI_FLAG_DUPL_DATA; 423 424 return 0; 425 } 426 427 void *UI_get0_user_data(UI *ui) 428 { 429 return ui->user_data; 430 } 431 432 const char *UI_get0_result(UI *ui, int i) 433 { 434 if (i < 0) { 435 UIerr(UI_F_UI_GET0_RESULT, UI_R_INDEX_TOO_SMALL); 436 return NULL; 437 } 438 if (i >= sk_UI_STRING_num(ui->strings)) { 439 UIerr(UI_F_UI_GET0_RESULT, UI_R_INDEX_TOO_LARGE); 440 return NULL; 441 } 442 return UI_get0_result_string(sk_UI_STRING_value(ui->strings, i)); 443 } 444 445 int UI_get_result_length(UI *ui, int i) 446 { 447 if (i < 0) { 448 UIerr(UI_F_UI_GET_RESULT_LENGTH, UI_R_INDEX_TOO_SMALL); 449 return -1; 450 } 451 if (i >= sk_UI_STRING_num(ui->strings)) { 452 UIerr(UI_F_UI_GET_RESULT_LENGTH, UI_R_INDEX_TOO_LARGE); 453 return -1; 454 } 455 return UI_get_result_string_length(sk_UI_STRING_value(ui->strings, i)); 456 } 457 458 static int print_error(const char *str, size_t len, UI *ui) 459 { 460 UI_STRING uis; 461 462 memset(&uis, 0, sizeof(uis)); 463 uis.type = UIT_ERROR; 464 uis.out_string = str; 465 466 if (ui->meth->ui_write_string != NULL 467 && ui->meth->ui_write_string(ui, &uis) <= 0) 468 return -1; 469 return 0; 470 } 471 472 int UI_process(UI *ui) 473 { 474 int i, ok = 0; 475 const char *state = "processing"; 476 477 if (ui->meth->ui_open_session != NULL 478 && ui->meth->ui_open_session(ui) <= 0) { 479 state = "opening session"; 480 ok = -1; 481 goto err; 482 } 483 484 if (ui->flags & UI_FLAG_PRINT_ERRORS) 485 ERR_print_errors_cb((int (*)(const char *, size_t, void *)) 486 print_error, (void *)ui); 487 488 for (i = 0; i < sk_UI_STRING_num(ui->strings); i++) { 489 if (ui->meth->ui_write_string != NULL 490 && (ui->meth->ui_write_string(ui, 491 sk_UI_STRING_value(ui->strings, i)) 492 <= 0)) 493 { 494 state = "writing strings"; 495 ok = -1; 496 goto err; 497 } 498 } 499 500 if (ui->meth->ui_flush != NULL) 501 switch (ui->meth->ui_flush(ui)) { 502 case -1: /* Interrupt/Cancel/something... */ 503 ok = -2; 504 goto err; 505 case 0: /* Errors */ 506 state = "flushing"; 507 ok = -1; 508 goto err; 509 default: /* Success */ 510 ok = 0; 511 break; 512 } 513 514 for (i = 0; i < sk_UI_STRING_num(ui->strings); i++) { 515 if (ui->meth->ui_read_string != NULL) { 516 switch (ui->meth->ui_read_string(ui, 517 sk_UI_STRING_value(ui->strings, 518 i))) { 519 case -1: /* Interrupt/Cancel/something... */ 520 ok = -2; 521 goto err; 522 case 0: /* Errors */ 523 state = "reading strings"; 524 ok = -1; 525 goto err; 526 default: /* Success */ 527 ok = 0; 528 break; 529 } 530 } 531 } 532 533 state = NULL; 534 err: 535 if (ui->meth->ui_close_session != NULL 536 && ui->meth->ui_close_session(ui) <= 0) { 537 if (state == NULL) 538 state = "closing session"; 539 ok = -1; 540 } 541 542 if (ok == -1) { 543 UIerr(UI_F_UI_PROCESS, UI_R_PROCESSING_ERROR); 544 ERR_add_error_data(2, "while ", state); 545 } 546 return ok; 547 } 548 549 int UI_ctrl(UI *ui, int cmd, long i, void *p, void (*f) (void)) 550 { 551 if (ui == NULL) { 552 UIerr(UI_F_UI_CTRL, ERR_R_PASSED_NULL_PARAMETER); 553 return -1; 554 } 555 switch (cmd) { 556 case UI_CTRL_PRINT_ERRORS: 557 { 558 int save_flag = ! !(ui->flags & UI_FLAG_PRINT_ERRORS); 559 if (i) 560 ui->flags |= UI_FLAG_PRINT_ERRORS; 561 else 562 ui->flags &= ~UI_FLAG_PRINT_ERRORS; 563 return save_flag; 564 } 565 case UI_CTRL_IS_REDOABLE: 566 return ! !(ui->flags & UI_FLAG_REDOABLE); 567 default: 568 break; 569 } 570 UIerr(UI_F_UI_CTRL, UI_R_UNKNOWN_CONTROL_COMMAND); 571 return -1; 572 } 573 574 int UI_set_ex_data(UI *r, int idx, void *arg) 575 { 576 return CRYPTO_set_ex_data(&r->ex_data, idx, arg); 577 } 578 579 void *UI_get_ex_data(UI *r, int idx) 580 { 581 return CRYPTO_get_ex_data(&r->ex_data, idx); 582 } 583 584 const UI_METHOD *UI_get_method(UI *ui) 585 { 586 return ui->meth; 587 } 588 589 const UI_METHOD *UI_set_method(UI *ui, const UI_METHOD *meth) 590 { 591 ui->meth = meth; 592 return ui->meth; 593 } 594 595 UI_METHOD *UI_create_method(const char *name) 596 { 597 UI_METHOD *ui_method = NULL; 598 599 if ((ui_method = OPENSSL_zalloc(sizeof(*ui_method))) == NULL 600 || (ui_method->name = OPENSSL_strdup(name)) == NULL 601 || !CRYPTO_new_ex_data(CRYPTO_EX_INDEX_UI_METHOD, ui_method, 602 &ui_method->ex_data)) { 603 if (ui_method) 604 OPENSSL_free(ui_method->name); 605 OPENSSL_free(ui_method); 606 UIerr(UI_F_UI_CREATE_METHOD, ERR_R_MALLOC_FAILURE); 607 return NULL; 608 } 609 return ui_method; 610 } 611 612 /* 613 * BIG FSCKING WARNING!!!! If you use this on a statically allocated method 614 * (that is, it hasn't been allocated using UI_create_method(), you deserve 615 * anything Murphy can throw at you and more! You have been warned. 616 */ 617 void UI_destroy_method(UI_METHOD *ui_method) 618 { 619 if (ui_method == NULL) 620 return; 621 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_UI_METHOD, ui_method, 622 &ui_method->ex_data); 623 OPENSSL_free(ui_method->name); 624 ui_method->name = NULL; 625 OPENSSL_free(ui_method); 626 } 627 628 int UI_method_set_opener(UI_METHOD *method, int (*opener) (UI *ui)) 629 { 630 if (method != NULL) { 631 method->ui_open_session = opener; 632 return 0; 633 } 634 return -1; 635 } 636 637 int UI_method_set_writer(UI_METHOD *method, 638 int (*writer) (UI *ui, UI_STRING *uis)) 639 { 640 if (method != NULL) { 641 method->ui_write_string = writer; 642 return 0; 643 } 644 return -1; 645 } 646 647 int UI_method_set_flusher(UI_METHOD *method, int (*flusher) (UI *ui)) 648 { 649 if (method != NULL) { 650 method->ui_flush = flusher; 651 return 0; 652 } 653 return -1; 654 } 655 656 int UI_method_set_reader(UI_METHOD *method, 657 int (*reader) (UI *ui, UI_STRING *uis)) 658 { 659 if (method != NULL) { 660 method->ui_read_string = reader; 661 return 0; 662 } 663 return -1; 664 } 665 666 int UI_method_set_closer(UI_METHOD *method, int (*closer) (UI *ui)) 667 { 668 if (method != NULL) { 669 method->ui_close_session = closer; 670 return 0; 671 } 672 return -1; 673 } 674 675 int UI_method_set_data_duplicator(UI_METHOD *method, 676 void *(*duplicator) (UI *ui, void *ui_data), 677 void (*destructor)(UI *ui, void *ui_data)) 678 { 679 if (method != NULL) { 680 method->ui_duplicate_data = duplicator; 681 method->ui_destroy_data = destructor; 682 return 0; 683 } 684 return -1; 685 } 686 687 int UI_method_set_prompt_constructor(UI_METHOD *method, 688 char *(*prompt_constructor) (UI *ui, 689 const char 690 *object_desc, 691 const char 692 *object_name)) 693 { 694 if (method != NULL) { 695 method->ui_construct_prompt = prompt_constructor; 696 return 0; 697 } 698 return -1; 699 } 700 701 int UI_method_set_ex_data(UI_METHOD *method, int idx, void *data) 702 { 703 return CRYPTO_set_ex_data(&method->ex_data, idx, data); 704 } 705 706 int (*UI_method_get_opener(const UI_METHOD *method)) (UI *) 707 { 708 if (method != NULL) 709 return method->ui_open_session; 710 return NULL; 711 } 712 713 int (*UI_method_get_writer(const UI_METHOD *method)) (UI *, UI_STRING *) 714 { 715 if (method != NULL) 716 return method->ui_write_string; 717 return NULL; 718 } 719 720 int (*UI_method_get_flusher(const UI_METHOD *method)) (UI *) 721 { 722 if (method != NULL) 723 return method->ui_flush; 724 return NULL; 725 } 726 727 int (*UI_method_get_reader(const UI_METHOD *method)) (UI *, UI_STRING *) 728 { 729 if (method != NULL) 730 return method->ui_read_string; 731 return NULL; 732 } 733 734 int (*UI_method_get_closer(const UI_METHOD *method)) (UI *) 735 { 736 if (method != NULL) 737 return method->ui_close_session; 738 return NULL; 739 } 740 741 char *(*UI_method_get_prompt_constructor(const UI_METHOD *method)) 742 (UI *, const char *, const char *) 743 { 744 if (method != NULL) 745 return method->ui_construct_prompt; 746 return NULL; 747 } 748 749 void *(*UI_method_get_data_duplicator(const UI_METHOD *method)) (UI *, void *) 750 { 751 if (method != NULL) 752 return method->ui_duplicate_data; 753 return NULL; 754 } 755 756 void (*UI_method_get_data_destructor(const UI_METHOD *method)) (UI *, void *) 757 { 758 if (method != NULL) 759 return method->ui_destroy_data; 760 return NULL; 761 } 762 763 const void *UI_method_get_ex_data(const UI_METHOD *method, int idx) 764 { 765 return CRYPTO_get_ex_data(&method->ex_data, idx); 766 } 767 768 enum UI_string_types UI_get_string_type(UI_STRING *uis) 769 { 770 return uis->type; 771 } 772 773 int UI_get_input_flags(UI_STRING *uis) 774 { 775 return uis->input_flags; 776 } 777 778 const char *UI_get0_output_string(UI_STRING *uis) 779 { 780 return uis->out_string; 781 } 782 783 const char *UI_get0_action_string(UI_STRING *uis) 784 { 785 switch (uis->type) { 786 case UIT_BOOLEAN: 787 return uis->_.boolean_data.action_desc; 788 case UIT_PROMPT: 789 case UIT_NONE: 790 case UIT_VERIFY: 791 case UIT_INFO: 792 case UIT_ERROR: 793 break; 794 } 795 return NULL; 796 } 797 798 const char *UI_get0_result_string(UI_STRING *uis) 799 { 800 switch (uis->type) { 801 case UIT_PROMPT: 802 case UIT_VERIFY: 803 return uis->result_buf; 804 case UIT_NONE: 805 case UIT_BOOLEAN: 806 case UIT_INFO: 807 case UIT_ERROR: 808 break; 809 } 810 return NULL; 811 } 812 813 int UI_get_result_string_length(UI_STRING *uis) 814 { 815 switch (uis->type) { 816 case UIT_PROMPT: 817 case UIT_VERIFY: 818 return uis->result_len; 819 case UIT_NONE: 820 case UIT_BOOLEAN: 821 case UIT_INFO: 822 case UIT_ERROR: 823 break; 824 } 825 return -1; 826 } 827 828 const char *UI_get0_test_string(UI_STRING *uis) 829 { 830 switch (uis->type) { 831 case UIT_VERIFY: 832 return uis->_.string_data.test_buf; 833 case UIT_NONE: 834 case UIT_BOOLEAN: 835 case UIT_INFO: 836 case UIT_ERROR: 837 case UIT_PROMPT: 838 break; 839 } 840 return NULL; 841 } 842 843 int UI_get_result_minsize(UI_STRING *uis) 844 { 845 switch (uis->type) { 846 case UIT_PROMPT: 847 case UIT_VERIFY: 848 return uis->_.string_data.result_minsize; 849 case UIT_NONE: 850 case UIT_INFO: 851 case UIT_ERROR: 852 case UIT_BOOLEAN: 853 break; 854 } 855 return -1; 856 } 857 858 int UI_get_result_maxsize(UI_STRING *uis) 859 { 860 switch (uis->type) { 861 case UIT_PROMPT: 862 case UIT_VERIFY: 863 return uis->_.string_data.result_maxsize; 864 case UIT_NONE: 865 case UIT_INFO: 866 case UIT_ERROR: 867 case UIT_BOOLEAN: 868 break; 869 } 870 return -1; 871 } 872 873 int UI_set_result(UI *ui, UI_STRING *uis, const char *result) 874 { 875 #if 0 876 /* 877 * This is placed here solely to preserve UI_F_UI_SET_RESULT 878 * To be removed for OpenSSL 1.2.0 879 */ 880 UIerr(UI_F_UI_SET_RESULT, ERR_R_DISABLED); 881 #endif 882 return UI_set_result_ex(ui, uis, result, strlen(result)); 883 } 884 885 int UI_set_result_ex(UI *ui, UI_STRING *uis, const char *result, int len) 886 { 887 ui->flags &= ~UI_FLAG_REDOABLE; 888 889 switch (uis->type) { 890 case UIT_PROMPT: 891 case UIT_VERIFY: 892 { 893 char number1[DECIMAL_SIZE(uis->_.string_data.result_minsize) + 1]; 894 char number2[DECIMAL_SIZE(uis->_.string_data.result_maxsize) + 1]; 895 896 BIO_snprintf(number1, sizeof(number1), "%d", 897 uis->_.string_data.result_minsize); 898 BIO_snprintf(number2, sizeof(number2), "%d", 899 uis->_.string_data.result_maxsize); 900 901 if (len < uis->_.string_data.result_minsize) { 902 ui->flags |= UI_FLAG_REDOABLE; 903 UIerr(UI_F_UI_SET_RESULT_EX, UI_R_RESULT_TOO_SMALL); 904 ERR_add_error_data(5, "You must type in ", 905 number1, " to ", number2, " characters"); 906 return -1; 907 } 908 if (len > uis->_.string_data.result_maxsize) { 909 ui->flags |= UI_FLAG_REDOABLE; 910 UIerr(UI_F_UI_SET_RESULT_EX, UI_R_RESULT_TOO_LARGE); 911 ERR_add_error_data(5, "You must type in ", 912 number1, " to ", number2, " characters"); 913 return -1; 914 } 915 } 916 917 if (uis->result_buf == NULL) { 918 UIerr(UI_F_UI_SET_RESULT_EX, UI_R_NO_RESULT_BUFFER); 919 return -1; 920 } 921 922 memcpy(uis->result_buf, result, len); 923 if (len <= uis->_.string_data.result_maxsize) 924 uis->result_buf[len] = '\0'; 925 uis->result_len = len; 926 break; 927 case UIT_BOOLEAN: 928 { 929 const char *p; 930 931 if (uis->result_buf == NULL) { 932 UIerr(UI_F_UI_SET_RESULT_EX, UI_R_NO_RESULT_BUFFER); 933 return -1; 934 } 935 936 uis->result_buf[0] = '\0'; 937 for (p = result; *p; p++) { 938 if (strchr(uis->_.boolean_data.ok_chars, *p)) { 939 uis->result_buf[0] = uis->_.boolean_data.ok_chars[0]; 940 break; 941 } 942 if (strchr(uis->_.boolean_data.cancel_chars, *p)) { 943 uis->result_buf[0] = uis->_.boolean_data.cancel_chars[0]; 944 break; 945 } 946 } 947 } 948 case UIT_NONE: 949 case UIT_INFO: 950 case UIT_ERROR: 951 break; 952 } 953 return 0; 954 } 955