1 /* 2 * Copyright 1995-2019 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 /* Part of the code in here was originally in conf.c, which is now removed */ 11 12 #include <stdio.h> 13 #include <string.h> 14 #include "internal/cryptlib.h" 15 #include "internal/o_dir.h" 16 #include <openssl/lhash.h> 17 #include <openssl/conf.h> 18 #include <openssl/conf_api.h> 19 #include "conf_def.h" 20 #include <openssl/buffer.h> 21 #include <openssl/err.h> 22 #ifndef OPENSSL_NO_POSIX_IO 23 # include <sys/stat.h> 24 # ifdef _WIN32 25 # define stat _stat 26 # define strcasecmp _stricmp 27 # endif 28 #endif 29 30 #ifndef S_ISDIR 31 # define S_ISDIR(a) (((a) & S_IFMT) == S_IFDIR) 32 #endif 33 34 /* 35 * The maximum length we can grow a value to after variable expansion. 64k 36 * should be more than enough for all reasonable uses. 37 */ 38 #define MAX_CONF_VALUE_LENGTH 65536 39 40 static int is_keytype(const CONF *conf, char c, unsigned short type); 41 static char *eat_ws(CONF *conf, char *p); 42 static void trim_ws(CONF *conf, char *start); 43 static char *eat_alpha_numeric(CONF *conf, char *p); 44 static void clear_comments(CONF *conf, char *p); 45 static int str_copy(CONF *conf, char *section, char **to, char *from); 46 static char *scan_quote(CONF *conf, char *p); 47 static char *scan_dquote(CONF *conf, char *p); 48 #define scan_esc(conf,p) (((IS_EOF((conf),(p)[1]))?((p)+1):((p)+2))) 49 #ifndef OPENSSL_NO_POSIX_IO 50 static BIO *process_include(char *include, OPENSSL_DIR_CTX **dirctx, 51 char **dirpath); 52 static BIO *get_next_file(const char *path, OPENSSL_DIR_CTX **dirctx); 53 #endif 54 55 static CONF *def_create(CONF_METHOD *meth); 56 static int def_init_default(CONF *conf); 57 static int def_init_WIN32(CONF *conf); 58 static int def_destroy(CONF *conf); 59 static int def_destroy_data(CONF *conf); 60 static int def_load(CONF *conf, const char *name, long *eline); 61 static int def_load_bio(CONF *conf, BIO *bp, long *eline); 62 static int def_dump(const CONF *conf, BIO *bp); 63 static int def_is_number(const CONF *conf, char c); 64 static int def_to_int(const CONF *conf, char c); 65 66 static CONF_METHOD default_method = { 67 "OpenSSL default", 68 def_create, 69 def_init_default, 70 def_destroy, 71 def_destroy_data, 72 def_load_bio, 73 def_dump, 74 def_is_number, 75 def_to_int, 76 def_load 77 }; 78 79 static CONF_METHOD WIN32_method = { 80 "WIN32", 81 def_create, 82 def_init_WIN32, 83 def_destroy, 84 def_destroy_data, 85 def_load_bio, 86 def_dump, 87 def_is_number, 88 def_to_int, 89 def_load 90 }; 91 92 CONF_METHOD *NCONF_default(void) 93 { 94 return &default_method; 95 } 96 97 CONF_METHOD *NCONF_WIN32(void) 98 { 99 return &WIN32_method; 100 } 101 102 static CONF *def_create(CONF_METHOD *meth) 103 { 104 CONF *ret; 105 106 ret = OPENSSL_malloc(sizeof(*ret)); 107 if (ret != NULL) 108 if (meth->init(ret) == 0) { 109 OPENSSL_free(ret); 110 ret = NULL; 111 } 112 return ret; 113 } 114 115 static int def_init_default(CONF *conf) 116 { 117 if (conf == NULL) 118 return 0; 119 120 conf->meth = &default_method; 121 conf->meth_data = (void *)CONF_type_default; 122 conf->data = NULL; 123 124 return 1; 125 } 126 127 static int def_init_WIN32(CONF *conf) 128 { 129 if (conf == NULL) 130 return 0; 131 132 conf->meth = &WIN32_method; 133 conf->meth_data = (void *)CONF_type_win32; 134 conf->data = NULL; 135 136 return 1; 137 } 138 139 static int def_destroy(CONF *conf) 140 { 141 if (def_destroy_data(conf)) { 142 OPENSSL_free(conf); 143 return 1; 144 } 145 return 0; 146 } 147 148 static int def_destroy_data(CONF *conf) 149 { 150 if (conf == NULL) 151 return 0; 152 _CONF_free_data(conf); 153 return 1; 154 } 155 156 static int def_load(CONF *conf, const char *name, long *line) 157 { 158 int ret; 159 BIO *in = NULL; 160 161 #ifdef OPENSSL_SYS_VMS 162 in = BIO_new_file(name, "r"); 163 #else 164 in = BIO_new_file(name, "rb"); 165 #endif 166 if (in == NULL) { 167 if (ERR_GET_REASON(ERR_peek_last_error()) == BIO_R_NO_SUCH_FILE) 168 CONFerr(CONF_F_DEF_LOAD, CONF_R_NO_SUCH_FILE); 169 else 170 CONFerr(CONF_F_DEF_LOAD, ERR_R_SYS_LIB); 171 return 0; 172 } 173 174 ret = def_load_bio(conf, in, line); 175 BIO_free(in); 176 177 return ret; 178 } 179 180 static int def_load_bio(CONF *conf, BIO *in, long *line) 181 { 182 /* The macro BUFSIZE conflicts with a system macro in VxWorks */ 183 #define CONFBUFSIZE 512 184 int bufnum = 0, i, ii; 185 BUF_MEM *buff = NULL; 186 char *s, *p, *end; 187 int again; 188 long eline = 0; 189 char btmp[DECIMAL_SIZE(eline) + 1]; 190 CONF_VALUE *v = NULL, *tv; 191 CONF_VALUE *sv = NULL; 192 char *section = NULL, *buf; 193 char *start, *psection, *pname; 194 void *h = (void *)(conf->data); 195 STACK_OF(BIO) *biosk = NULL; 196 #ifndef OPENSSL_NO_POSIX_IO 197 char *dirpath = NULL; 198 OPENSSL_DIR_CTX *dirctx = NULL; 199 #endif 200 201 if ((buff = BUF_MEM_new()) == NULL) { 202 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_BUF_LIB); 203 goto err; 204 } 205 206 section = OPENSSL_strdup("default"); 207 if (section == NULL) { 208 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); 209 goto err; 210 } 211 212 if (_CONF_new_data(conf) == 0) { 213 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); 214 goto err; 215 } 216 217 sv = _CONF_new_section(conf, section); 218 if (sv == NULL) { 219 CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_UNABLE_TO_CREATE_NEW_SECTION); 220 goto err; 221 } 222 223 bufnum = 0; 224 again = 0; 225 for (;;) { 226 if (!BUF_MEM_grow(buff, bufnum + CONFBUFSIZE)) { 227 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_BUF_LIB); 228 goto err; 229 } 230 p = &(buff->data[bufnum]); 231 *p = '\0'; 232 read_retry: 233 BIO_gets(in, p, CONFBUFSIZE - 1); 234 p[CONFBUFSIZE - 1] = '\0'; 235 ii = i = strlen(p); 236 if (i == 0 && !again) { 237 /* the currently processed BIO is at EOF */ 238 BIO *parent; 239 240 #ifndef OPENSSL_NO_POSIX_IO 241 /* continue processing with the next file from directory */ 242 if (dirctx != NULL) { 243 BIO *next; 244 245 if ((next = get_next_file(dirpath, &dirctx)) != NULL) { 246 BIO_vfree(in); 247 in = next; 248 goto read_retry; 249 } else { 250 OPENSSL_free(dirpath); 251 dirpath = NULL; 252 } 253 } 254 #endif 255 /* no more files in directory, continue with processing parent */ 256 if ((parent = sk_BIO_pop(biosk)) == NULL) { 257 /* everything processed get out of the loop */ 258 break; 259 } else { 260 BIO_vfree(in); 261 in = parent; 262 goto read_retry; 263 } 264 } 265 again = 0; 266 while (i > 0) { 267 if ((p[i - 1] != '\r') && (p[i - 1] != '\n')) 268 break; 269 else 270 i--; 271 } 272 /* 273 * we removed some trailing stuff so there is a new line on the end. 274 */ 275 if (ii && i == ii) 276 again = 1; /* long line */ 277 else { 278 p[i] = '\0'; 279 eline++; /* another input line */ 280 } 281 282 /* we now have a line with trailing \r\n removed */ 283 284 /* i is the number of bytes */ 285 bufnum += i; 286 287 v = NULL; 288 /* check for line continuation */ 289 if (bufnum >= 1) { 290 /* 291 * If we have bytes and the last char '\\' and second last char 292 * is not '\\' 293 */ 294 p = &(buff->data[bufnum - 1]); 295 if (IS_ESC(conf, p[0]) && ((bufnum <= 1) || !IS_ESC(conf, p[-1]))) { 296 bufnum--; 297 again = 1; 298 } 299 } 300 if (again) 301 continue; 302 bufnum = 0; 303 buf = buff->data; 304 305 clear_comments(conf, buf); 306 s = eat_ws(conf, buf); 307 if (IS_EOF(conf, *s)) 308 continue; /* blank line */ 309 if (*s == '[') { 310 char *ss; 311 312 s++; 313 start = eat_ws(conf, s); 314 ss = start; 315 again: 316 end = eat_alpha_numeric(conf, ss); 317 p = eat_ws(conf, end); 318 if (*p != ']') { 319 if (*p != '\0' && ss != p) { 320 ss = p; 321 goto again; 322 } 323 CONFerr(CONF_F_DEF_LOAD_BIO, 324 CONF_R_MISSING_CLOSE_SQUARE_BRACKET); 325 goto err; 326 } 327 *end = '\0'; 328 if (!str_copy(conf, NULL, §ion, start)) 329 goto err; 330 if ((sv = _CONF_get_section(conf, section)) == NULL) 331 sv = _CONF_new_section(conf, section); 332 if (sv == NULL) { 333 CONFerr(CONF_F_DEF_LOAD_BIO, 334 CONF_R_UNABLE_TO_CREATE_NEW_SECTION); 335 goto err; 336 } 337 continue; 338 } else { 339 pname = s; 340 end = eat_alpha_numeric(conf, s); 341 if ((end[0] == ':') && (end[1] == ':')) { 342 *end = '\0'; 343 end += 2; 344 psection = pname; 345 pname = end; 346 end = eat_alpha_numeric(conf, end); 347 } else { 348 psection = section; 349 } 350 p = eat_ws(conf, end); 351 if (strncmp(pname, ".include", 8) == 0 352 && (p != pname + 8 || *p == '=')) { 353 char *include = NULL; 354 BIO *next; 355 356 if (*p == '=') { 357 p++; 358 p = eat_ws(conf, p); 359 } 360 trim_ws(conf, p); 361 if (!str_copy(conf, psection, &include, p)) 362 goto err; 363 /* get the BIO of the included file */ 364 #ifndef OPENSSL_NO_POSIX_IO 365 next = process_include(include, &dirctx, &dirpath); 366 if (include != dirpath) { 367 /* dirpath will contain include in case of a directory */ 368 OPENSSL_free(include); 369 } 370 #else 371 next = BIO_new_file(include, "r"); 372 OPENSSL_free(include); 373 #endif 374 if (next != NULL) { 375 /* push the currently processing BIO onto stack */ 376 if (biosk == NULL) { 377 if ((biosk = sk_BIO_new_null()) == NULL) { 378 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); 379 goto err; 380 } 381 } 382 if (!sk_BIO_push(biosk, in)) { 383 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); 384 goto err; 385 } 386 /* continue with reading from the included BIO */ 387 in = next; 388 } 389 continue; 390 } else if (*p != '=') { 391 CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_MISSING_EQUAL_SIGN); 392 goto err; 393 } 394 *end = '\0'; 395 p++; 396 start = eat_ws(conf, p); 397 trim_ws(conf, start); 398 399 if ((v = OPENSSL_malloc(sizeof(*v))) == NULL) { 400 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); 401 goto err; 402 } 403 v->name = OPENSSL_strdup(pname); 404 v->value = NULL; 405 if (v->name == NULL) { 406 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); 407 goto err; 408 } 409 if (!str_copy(conf, psection, &(v->value), start)) 410 goto err; 411 412 if (strcmp(psection, section) != 0) { 413 if ((tv = _CONF_get_section(conf, psection)) 414 == NULL) 415 tv = _CONF_new_section(conf, psection); 416 if (tv == NULL) { 417 CONFerr(CONF_F_DEF_LOAD_BIO, 418 CONF_R_UNABLE_TO_CREATE_NEW_SECTION); 419 goto err; 420 } 421 } else 422 tv = sv; 423 if (_CONF_add_string(conf, tv, v) == 0) { 424 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); 425 goto err; 426 } 427 v = NULL; 428 } 429 } 430 BUF_MEM_free(buff); 431 OPENSSL_free(section); 432 /* 433 * No need to pop, since we only get here if the stack is empty. 434 * If this causes a BIO leak, THE ISSUE IS SOMEWHERE ELSE! 435 */ 436 sk_BIO_free(biosk); 437 return 1; 438 err: 439 BUF_MEM_free(buff); 440 OPENSSL_free(section); 441 /* 442 * Since |in| is the first element of the stack and should NOT be freed 443 * here, we cannot use sk_BIO_pop_free(). Instead, we pop and free one 444 * BIO at a time, making sure that the last one popped isn't. 445 */ 446 while (sk_BIO_num(biosk) > 0) { 447 BIO *popped = sk_BIO_pop(biosk); 448 BIO_vfree(in); 449 in = popped; 450 } 451 sk_BIO_free(biosk); 452 #ifndef OPENSSL_NO_POSIX_IO 453 OPENSSL_free(dirpath); 454 if (dirctx != NULL) 455 OPENSSL_DIR_end(&dirctx); 456 #endif 457 if (line != NULL) 458 *line = eline; 459 BIO_snprintf(btmp, sizeof(btmp), "%ld", eline); 460 ERR_add_error_data(2, "line ", btmp); 461 if (h != conf->data) { 462 CONF_free(conf->data); 463 conf->data = NULL; 464 } 465 if (v != NULL) { 466 OPENSSL_free(v->name); 467 OPENSSL_free(v->value); 468 OPENSSL_free(v); 469 } 470 return 0; 471 } 472 473 static void clear_comments(CONF *conf, char *p) 474 { 475 for (;;) { 476 if (IS_FCOMMENT(conf, *p)) { 477 *p = '\0'; 478 return; 479 } 480 if (!IS_WS(conf, *p)) { 481 break; 482 } 483 p++; 484 } 485 486 for (;;) { 487 if (IS_COMMENT(conf, *p)) { 488 *p = '\0'; 489 return; 490 } 491 if (IS_DQUOTE(conf, *p)) { 492 p = scan_dquote(conf, p); 493 continue; 494 } 495 if (IS_QUOTE(conf, *p)) { 496 p = scan_quote(conf, p); 497 continue; 498 } 499 if (IS_ESC(conf, *p)) { 500 p = scan_esc(conf, p); 501 continue; 502 } 503 if (IS_EOF(conf, *p)) 504 return; 505 else 506 p++; 507 } 508 } 509 510 static int str_copy(CONF *conf, char *section, char **pto, char *from) 511 { 512 int q, r, rr = 0, to = 0, len = 0; 513 char *s, *e, *rp, *p, *rrp, *np, *cp, v; 514 BUF_MEM *buf; 515 516 if ((buf = BUF_MEM_new()) == NULL) 517 return 0; 518 519 len = strlen(from) + 1; 520 if (!BUF_MEM_grow(buf, len)) 521 goto err; 522 523 for (;;) { 524 if (IS_QUOTE(conf, *from)) { 525 q = *from; 526 from++; 527 while (!IS_EOF(conf, *from) && (*from != q)) { 528 if (IS_ESC(conf, *from)) { 529 from++; 530 if (IS_EOF(conf, *from)) 531 break; 532 } 533 buf->data[to++] = *(from++); 534 } 535 if (*from == q) 536 from++; 537 } else if (IS_DQUOTE(conf, *from)) { 538 q = *from; 539 from++; 540 while (!IS_EOF(conf, *from)) { 541 if (*from == q) { 542 if (*(from + 1) == q) { 543 from++; 544 } else { 545 break; 546 } 547 } 548 buf->data[to++] = *(from++); 549 } 550 if (*from == q) 551 from++; 552 } else if (IS_ESC(conf, *from)) { 553 from++; 554 v = *(from++); 555 if (IS_EOF(conf, v)) 556 break; 557 else if (v == 'r') 558 v = '\r'; 559 else if (v == 'n') 560 v = '\n'; 561 else if (v == 'b') 562 v = '\b'; 563 else if (v == 't') 564 v = '\t'; 565 buf->data[to++] = v; 566 } else if (IS_EOF(conf, *from)) 567 break; 568 else if (*from == '$') { 569 size_t newsize; 570 571 /* try to expand it */ 572 rrp = NULL; 573 s = &(from[1]); 574 if (*s == '{') 575 q = '}'; 576 else if (*s == '(') 577 q = ')'; 578 else 579 q = 0; 580 581 if (q) 582 s++; 583 cp = section; 584 e = np = s; 585 while (IS_ALNUM(conf, *e)) 586 e++; 587 if ((e[0] == ':') && (e[1] == ':')) { 588 cp = np; 589 rrp = e; 590 rr = *e; 591 *rrp = '\0'; 592 e += 2; 593 np = e; 594 while (IS_ALNUM(conf, *e)) 595 e++; 596 } 597 r = *e; 598 *e = '\0'; 599 rp = e; 600 if (q) { 601 if (r != q) { 602 CONFerr(CONF_F_STR_COPY, CONF_R_NO_CLOSE_BRACE); 603 goto err; 604 } 605 e++; 606 } 607 /*- 608 * So at this point we have 609 * np which is the start of the name string which is 610 * '\0' terminated. 611 * cp which is the start of the section string which is 612 * '\0' terminated. 613 * e is the 'next point after'. 614 * r and rr are the chars replaced by the '\0' 615 * rp and rrp is where 'r' and 'rr' came from. 616 */ 617 p = _CONF_get_string(conf, cp, np); 618 if (rrp != NULL) 619 *rrp = rr; 620 *rp = r; 621 if (p == NULL) { 622 CONFerr(CONF_F_STR_COPY, CONF_R_VARIABLE_HAS_NO_VALUE); 623 goto err; 624 } 625 newsize = strlen(p) + buf->length - (e - from); 626 if (newsize > MAX_CONF_VALUE_LENGTH) { 627 CONFerr(CONF_F_STR_COPY, CONF_R_VARIABLE_EXPANSION_TOO_LONG); 628 goto err; 629 } 630 if (!BUF_MEM_grow_clean(buf, newsize)) { 631 CONFerr(CONF_F_STR_COPY, ERR_R_MALLOC_FAILURE); 632 goto err; 633 } 634 while (*p) 635 buf->data[to++] = *(p++); 636 637 /* 638 * Since we change the pointer 'from', we also have to change the 639 * perceived length of the string it points at. /RL 640 */ 641 len -= e - from; 642 from = e; 643 644 /* 645 * In case there were no braces or parenthesis around the 646 * variable reference, we have to put back the character that was 647 * replaced with a '\0'. /RL 648 */ 649 *rp = r; 650 } else 651 buf->data[to++] = *(from++); 652 } 653 buf->data[to] = '\0'; 654 OPENSSL_free(*pto); 655 *pto = buf->data; 656 OPENSSL_free(buf); 657 return 1; 658 err: 659 BUF_MEM_free(buf); 660 return 0; 661 } 662 663 #ifndef OPENSSL_NO_POSIX_IO 664 /* 665 * Check whether included path is a directory. 666 * Returns next BIO to process and in case of a directory 667 * also an opened directory context and the include path. 668 */ 669 static BIO *process_include(char *include, OPENSSL_DIR_CTX **dirctx, 670 char **dirpath) 671 { 672 struct stat st = { 0 }; 673 BIO *next; 674 675 if (stat(include, &st) < 0) { 676 SYSerr(SYS_F_STAT, errno); 677 ERR_add_error_data(1, include); 678 /* missing include file is not fatal error */ 679 return NULL; 680 } 681 682 if (S_ISDIR(st.st_mode)) { 683 if (*dirctx != NULL) { 684 CONFerr(CONF_F_PROCESS_INCLUDE, 685 CONF_R_RECURSIVE_DIRECTORY_INCLUDE); 686 ERR_add_error_data(1, include); 687 return NULL; 688 } 689 /* a directory, load its contents */ 690 if ((next = get_next_file(include, dirctx)) != NULL) 691 *dirpath = include; 692 return next; 693 } 694 695 next = BIO_new_file(include, "r"); 696 return next; 697 } 698 699 /* 700 * Get next file from the directory path. 701 * Returns BIO of the next file to read and updates dirctx. 702 */ 703 static BIO *get_next_file(const char *path, OPENSSL_DIR_CTX **dirctx) 704 { 705 const char *filename; 706 size_t pathlen; 707 708 pathlen = strlen(path); 709 while ((filename = OPENSSL_DIR_read(dirctx, path)) != NULL) { 710 size_t namelen; 711 712 namelen = strlen(filename); 713 714 715 if ((namelen > 5 && strcasecmp(filename + namelen - 5, ".conf") == 0) 716 || (namelen > 4 && strcasecmp(filename + namelen - 4, ".cnf") == 0)) { 717 size_t newlen; 718 char *newpath; 719 BIO *bio; 720 721 newlen = pathlen + namelen + 2; 722 newpath = OPENSSL_zalloc(newlen); 723 if (newpath == NULL) { 724 CONFerr(CONF_F_GET_NEXT_FILE, ERR_R_MALLOC_FAILURE); 725 break; 726 } 727 #ifdef OPENSSL_SYS_VMS 728 /* 729 * If the given path isn't clear VMS syntax, 730 * we treat it as on Unix. 731 */ 732 if (path[pathlen - 1] == ']' 733 || path[pathlen - 1] == '>' 734 || path[pathlen - 1] == ':') { 735 /* Clear VMS directory syntax, just copy as is */ 736 OPENSSL_strlcpy(newpath, path, newlen); 737 } 738 #endif 739 if (newpath[0] == '\0') { 740 OPENSSL_strlcpy(newpath, path, newlen); 741 OPENSSL_strlcat(newpath, "/", newlen); 742 } 743 OPENSSL_strlcat(newpath, filename, newlen); 744 745 bio = BIO_new_file(newpath, "r"); 746 OPENSSL_free(newpath); 747 /* Errors when opening files are non-fatal. */ 748 if (bio != NULL) 749 return bio; 750 } 751 } 752 OPENSSL_DIR_end(dirctx); 753 *dirctx = NULL; 754 return NULL; 755 } 756 #endif 757 758 static int is_keytype(const CONF *conf, char c, unsigned short type) 759 { 760 const unsigned short * keytypes = (const unsigned short *) conf->meth_data; 761 unsigned char key = (unsigned char)c; 762 763 #ifdef CHARSET_EBCDIC 764 # if CHAR_BIT > 8 765 if (key > 255) { 766 /* key is out of range for os_toascii table */ 767 return 0; 768 } 769 # endif 770 /* convert key from ebcdic to ascii */ 771 key = os_toascii[key]; 772 #endif 773 774 if (key > 127) { 775 /* key is not a seven bit ascii character */ 776 return 0; 777 } 778 779 return (keytypes[key] & type) ? 1 : 0; 780 } 781 782 static char *eat_ws(CONF *conf, char *p) 783 { 784 while (IS_WS(conf, *p) && (!IS_EOF(conf, *p))) 785 p++; 786 return p; 787 } 788 789 static void trim_ws(CONF *conf, char *start) 790 { 791 char *p = start; 792 793 while (!IS_EOF(conf, *p)) 794 p++; 795 p--; 796 while ((p >= start) && IS_WS(conf, *p)) 797 p--; 798 p++; 799 *p = '\0'; 800 } 801 802 static char *eat_alpha_numeric(CONF *conf, char *p) 803 { 804 for (;;) { 805 if (IS_ESC(conf, *p)) { 806 p = scan_esc(conf, p); 807 continue; 808 } 809 if (!IS_ALNUM_PUNCT(conf, *p)) 810 return p; 811 p++; 812 } 813 } 814 815 static char *scan_quote(CONF *conf, char *p) 816 { 817 int q = *p; 818 819 p++; 820 while (!(IS_EOF(conf, *p)) && (*p != q)) { 821 if (IS_ESC(conf, *p)) { 822 p++; 823 if (IS_EOF(conf, *p)) 824 return p; 825 } 826 p++; 827 } 828 if (*p == q) 829 p++; 830 return p; 831 } 832 833 static char *scan_dquote(CONF *conf, char *p) 834 { 835 int q = *p; 836 837 p++; 838 while (!(IS_EOF(conf, *p))) { 839 if (*p == q) { 840 if (*(p + 1) == q) { 841 p++; 842 } else { 843 break; 844 } 845 } 846 p++; 847 } 848 if (*p == q) 849 p++; 850 return p; 851 } 852 853 static void dump_value_doall_arg(const CONF_VALUE *a, BIO *out) 854 { 855 if (a->name) 856 BIO_printf(out, "[%s] %s=%s\n", a->section, a->name, a->value); 857 else 858 BIO_printf(out, "[[%s]]\n", a->section); 859 } 860 861 IMPLEMENT_LHASH_DOALL_ARG_CONST(CONF_VALUE, BIO); 862 863 static int def_dump(const CONF *conf, BIO *out) 864 { 865 lh_CONF_VALUE_doall_BIO(conf->data, dump_value_doall_arg, out); 866 return 1; 867 } 868 869 static int def_is_number(const CONF *conf, char c) 870 { 871 return IS_NUMBER(conf, c); 872 } 873 874 static int def_to_int(const CONF *conf, char c) 875 { 876 return c - '0'; 877 } 878