1 /* 2 * Copyright 1995-2018 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 /* 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 && p != pname + 8) { 352 char *include = NULL; 353 BIO *next; 354 355 trim_ws(conf, p); 356 if (!str_copy(conf, psection, &include, p)) 357 goto err; 358 /* get the BIO of the included file */ 359 #ifndef OPENSSL_NO_POSIX_IO 360 next = process_include(include, &dirctx, &dirpath); 361 if (include != dirpath) { 362 /* dirpath will contain include in case of a directory */ 363 OPENSSL_free(include); 364 } 365 #else 366 next = BIO_new_file(include, "r"); 367 OPENSSL_free(include); 368 #endif 369 if (next != NULL) { 370 /* push the currently processing BIO onto stack */ 371 if (biosk == NULL) { 372 if ((biosk = sk_BIO_new_null()) == NULL) { 373 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); 374 goto err; 375 } 376 } 377 if (!sk_BIO_push(biosk, in)) { 378 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); 379 goto err; 380 } 381 /* continue with reading from the included BIO */ 382 in = next; 383 } 384 continue; 385 } else if (*p != '=') { 386 CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_MISSING_EQUAL_SIGN); 387 goto err; 388 } 389 *end = '\0'; 390 p++; 391 start = eat_ws(conf, p); 392 trim_ws(conf, start); 393 394 if ((v = OPENSSL_malloc(sizeof(*v))) == NULL) { 395 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); 396 goto err; 397 } 398 v->name = OPENSSL_strdup(pname); 399 v->value = NULL; 400 if (v->name == NULL) { 401 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); 402 goto err; 403 } 404 if (!str_copy(conf, psection, &(v->value), start)) 405 goto err; 406 407 if (strcmp(psection, section) != 0) { 408 if ((tv = _CONF_get_section(conf, psection)) 409 == NULL) 410 tv = _CONF_new_section(conf, psection); 411 if (tv == NULL) { 412 CONFerr(CONF_F_DEF_LOAD_BIO, 413 CONF_R_UNABLE_TO_CREATE_NEW_SECTION); 414 goto err; 415 } 416 } else 417 tv = sv; 418 if (_CONF_add_string(conf, tv, v) == 0) { 419 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); 420 goto err; 421 } 422 v = NULL; 423 } 424 } 425 BUF_MEM_free(buff); 426 OPENSSL_free(section); 427 /* 428 * No need to pop, since we only get here if the stack is empty. 429 * If this causes a BIO leak, THE ISSUE IS SOMEWHERE ELSE! 430 */ 431 sk_BIO_free(biosk); 432 return 1; 433 err: 434 BUF_MEM_free(buff); 435 OPENSSL_free(section); 436 /* 437 * Since |in| is the first element of the stack and should NOT be freed 438 * here, we cannot use sk_BIO_pop_free(). Instead, we pop and free one 439 * BIO at a time, making sure that the last one popped isn't. 440 */ 441 while (sk_BIO_num(biosk) > 0) { 442 BIO *popped = sk_BIO_pop(biosk); 443 BIO_vfree(in); 444 in = popped; 445 } 446 sk_BIO_free(biosk); 447 #ifndef OPENSSL_NO_POSIX_IO 448 OPENSSL_free(dirpath); 449 if (dirctx != NULL) 450 OPENSSL_DIR_end(&dirctx); 451 #endif 452 if (line != NULL) 453 *line = eline; 454 BIO_snprintf(btmp, sizeof(btmp), "%ld", eline); 455 ERR_add_error_data(2, "line ", btmp); 456 if (h != conf->data) { 457 CONF_free(conf->data); 458 conf->data = NULL; 459 } 460 if (v != NULL) { 461 OPENSSL_free(v->name); 462 OPENSSL_free(v->value); 463 OPENSSL_free(v); 464 } 465 return 0; 466 } 467 468 static void clear_comments(CONF *conf, char *p) 469 { 470 for (;;) { 471 if (IS_FCOMMENT(conf, *p)) { 472 *p = '\0'; 473 return; 474 } 475 if (!IS_WS(conf, *p)) { 476 break; 477 } 478 p++; 479 } 480 481 for (;;) { 482 if (IS_COMMENT(conf, *p)) { 483 *p = '\0'; 484 return; 485 } 486 if (IS_DQUOTE(conf, *p)) { 487 p = scan_dquote(conf, p); 488 continue; 489 } 490 if (IS_QUOTE(conf, *p)) { 491 p = scan_quote(conf, p); 492 continue; 493 } 494 if (IS_ESC(conf, *p)) { 495 p = scan_esc(conf, p); 496 continue; 497 } 498 if (IS_EOF(conf, *p)) 499 return; 500 else 501 p++; 502 } 503 } 504 505 static int str_copy(CONF *conf, char *section, char **pto, char *from) 506 { 507 int q, r, rr = 0, to = 0, len = 0; 508 char *s, *e, *rp, *p, *rrp, *np, *cp, v; 509 BUF_MEM *buf; 510 511 if ((buf = BUF_MEM_new()) == NULL) 512 return 0; 513 514 len = strlen(from) + 1; 515 if (!BUF_MEM_grow(buf, len)) 516 goto err; 517 518 for (;;) { 519 if (IS_QUOTE(conf, *from)) { 520 q = *from; 521 from++; 522 while (!IS_EOF(conf, *from) && (*from != q)) { 523 if (IS_ESC(conf, *from)) { 524 from++; 525 if (IS_EOF(conf, *from)) 526 break; 527 } 528 buf->data[to++] = *(from++); 529 } 530 if (*from == q) 531 from++; 532 } else if (IS_DQUOTE(conf, *from)) { 533 q = *from; 534 from++; 535 while (!IS_EOF(conf, *from)) { 536 if (*from == q) { 537 if (*(from + 1) == q) { 538 from++; 539 } else { 540 break; 541 } 542 } 543 buf->data[to++] = *(from++); 544 } 545 if (*from == q) 546 from++; 547 } else if (IS_ESC(conf, *from)) { 548 from++; 549 v = *(from++); 550 if (IS_EOF(conf, v)) 551 break; 552 else if (v == 'r') 553 v = '\r'; 554 else if (v == 'n') 555 v = '\n'; 556 else if (v == 'b') 557 v = '\b'; 558 else if (v == 't') 559 v = '\t'; 560 buf->data[to++] = v; 561 } else if (IS_EOF(conf, *from)) 562 break; 563 else if (*from == '$') { 564 size_t newsize; 565 566 /* try to expand it */ 567 rrp = NULL; 568 s = &(from[1]); 569 if (*s == '{') 570 q = '}'; 571 else if (*s == '(') 572 q = ')'; 573 else 574 q = 0; 575 576 if (q) 577 s++; 578 cp = section; 579 e = np = s; 580 while (IS_ALNUM(conf, *e)) 581 e++; 582 if ((e[0] == ':') && (e[1] == ':')) { 583 cp = np; 584 rrp = e; 585 rr = *e; 586 *rrp = '\0'; 587 e += 2; 588 np = e; 589 while (IS_ALNUM(conf, *e)) 590 e++; 591 } 592 r = *e; 593 *e = '\0'; 594 rp = e; 595 if (q) { 596 if (r != q) { 597 CONFerr(CONF_F_STR_COPY, CONF_R_NO_CLOSE_BRACE); 598 goto err; 599 } 600 e++; 601 } 602 /*- 603 * So at this point we have 604 * np which is the start of the name string which is 605 * '\0' terminated. 606 * cp which is the start of the section string which is 607 * '\0' terminated. 608 * e is the 'next point after'. 609 * r and rr are the chars replaced by the '\0' 610 * rp and rrp is where 'r' and 'rr' came from. 611 */ 612 p = _CONF_get_string(conf, cp, np); 613 if (rrp != NULL) 614 *rrp = rr; 615 *rp = r; 616 if (p == NULL) { 617 CONFerr(CONF_F_STR_COPY, CONF_R_VARIABLE_HAS_NO_VALUE); 618 goto err; 619 } 620 newsize = strlen(p) + buf->length - (e - from); 621 if (newsize > MAX_CONF_VALUE_LENGTH) { 622 CONFerr(CONF_F_STR_COPY, CONF_R_VARIABLE_EXPANSION_TOO_LONG); 623 goto err; 624 } 625 if (!BUF_MEM_grow_clean(buf, newsize)) { 626 CONFerr(CONF_F_STR_COPY, ERR_R_MALLOC_FAILURE); 627 goto err; 628 } 629 while (*p) 630 buf->data[to++] = *(p++); 631 632 /* 633 * Since we change the pointer 'from', we also have to change the 634 * perceived length of the string it points at. /RL 635 */ 636 len -= e - from; 637 from = e; 638 639 /* 640 * In case there were no braces or parenthesis around the 641 * variable reference, we have to put back the character that was 642 * replaced with a '\0'. /RL 643 */ 644 *rp = r; 645 } else 646 buf->data[to++] = *(from++); 647 } 648 buf->data[to] = '\0'; 649 OPENSSL_free(*pto); 650 *pto = buf->data; 651 OPENSSL_free(buf); 652 return 1; 653 err: 654 BUF_MEM_free(buf); 655 return 0; 656 } 657 658 #ifndef OPENSSL_NO_POSIX_IO 659 /* 660 * Check whether included path is a directory. 661 * Returns next BIO to process and in case of a directory 662 * also an opened directory context and the include path. 663 */ 664 static BIO *process_include(char *include, OPENSSL_DIR_CTX **dirctx, 665 char **dirpath) 666 { 667 struct stat st = { 0 }; 668 BIO *next; 669 670 if (stat(include, &st) < 0) { 671 SYSerr(SYS_F_STAT, errno); 672 ERR_add_error_data(1, include); 673 /* missing include file is not fatal error */ 674 return NULL; 675 } 676 677 if (S_ISDIR(st.st_mode)) { 678 if (*dirctx != NULL) { 679 CONFerr(CONF_F_PROCESS_INCLUDE, 680 CONF_R_RECURSIVE_DIRECTORY_INCLUDE); 681 ERR_add_error_data(1, include); 682 return NULL; 683 } 684 /* a directory, load its contents */ 685 if ((next = get_next_file(include, dirctx)) != NULL) 686 *dirpath = include; 687 return next; 688 } 689 690 next = BIO_new_file(include, "r"); 691 return next; 692 } 693 694 /* 695 * Get next file from the directory path. 696 * Returns BIO of the next file to read and updates dirctx. 697 */ 698 static BIO *get_next_file(const char *path, OPENSSL_DIR_CTX **dirctx) 699 { 700 const char *filename; 701 702 while ((filename = OPENSSL_DIR_read(dirctx, path)) != NULL) { 703 size_t namelen; 704 705 namelen = strlen(filename); 706 707 708 if ((namelen > 5 && strcasecmp(filename + namelen - 5, ".conf") == 0) 709 || (namelen > 4 && strcasecmp(filename + namelen - 4, ".cnf") == 0)) { 710 size_t newlen; 711 char *newpath; 712 BIO *bio; 713 714 newlen = strlen(path) + namelen + 2; 715 newpath = OPENSSL_zalloc(newlen); 716 if (newpath == NULL) { 717 CONFerr(CONF_F_GET_NEXT_FILE, ERR_R_MALLOC_FAILURE); 718 break; 719 } 720 #ifdef OPENSSL_SYS_VMS 721 /* 722 * If the given path isn't clear VMS syntax, 723 * we treat it as on Unix. 724 */ 725 { 726 size_t pathlen = strlen(path); 727 728 if (path[pathlen - 1] == ']' || path[pathlen - 1] == '>' 729 || path[pathlen - 1] == ':') { 730 /* Clear VMS directory syntax, just copy as is */ 731 OPENSSL_strlcpy(newpath, path, newlen); 732 } 733 } 734 #endif 735 if (newpath[0] == '\0') { 736 OPENSSL_strlcpy(newpath, path, newlen); 737 OPENSSL_strlcat(newpath, "/", newlen); 738 } 739 OPENSSL_strlcat(newpath, filename, newlen); 740 741 bio = BIO_new_file(newpath, "r"); 742 OPENSSL_free(newpath); 743 /* Errors when opening files are non-fatal. */ 744 if (bio != NULL) 745 return bio; 746 } 747 } 748 OPENSSL_DIR_end(dirctx); 749 *dirctx = NULL; 750 return NULL; 751 } 752 #endif 753 754 static int is_keytype(const CONF *conf, char c, unsigned short type) 755 { 756 const unsigned short * keytypes = (const unsigned short *) conf->meth_data; 757 unsigned char key = (unsigned char)c; 758 759 #ifdef CHARSET_EBCDIC 760 # if CHAR_BIT > 8 761 if (key > 255) { 762 /* key is out of range for os_toascii table */ 763 return 0; 764 } 765 # endif 766 /* convert key from ebcdic to ascii */ 767 key = os_toascii[key]; 768 #endif 769 770 if (key > 127) { 771 /* key is not a seven bit ascii character */ 772 return 0; 773 } 774 775 return (keytypes[key] & type) ? 1 : 0; 776 } 777 778 static char *eat_ws(CONF *conf, char *p) 779 { 780 while (IS_WS(conf, *p) && (!IS_EOF(conf, *p))) 781 p++; 782 return p; 783 } 784 785 static void trim_ws(CONF *conf, char *start) 786 { 787 char *p = start; 788 789 while (!IS_EOF(conf, *p)) 790 p++; 791 p--; 792 while ((p >= start) && IS_WS(conf, *p)) 793 p--; 794 p++; 795 *p = '\0'; 796 } 797 798 static char *eat_alpha_numeric(CONF *conf, char *p) 799 { 800 for (;;) { 801 if (IS_ESC(conf, *p)) { 802 p = scan_esc(conf, p); 803 continue; 804 } 805 if (!IS_ALNUM_PUNCT(conf, *p)) 806 return p; 807 p++; 808 } 809 } 810 811 static char *scan_quote(CONF *conf, char *p) 812 { 813 int q = *p; 814 815 p++; 816 while (!(IS_EOF(conf, *p)) && (*p != q)) { 817 if (IS_ESC(conf, *p)) { 818 p++; 819 if (IS_EOF(conf, *p)) 820 return p; 821 } 822 p++; 823 } 824 if (*p == q) 825 p++; 826 return p; 827 } 828 829 static char *scan_dquote(CONF *conf, char *p) 830 { 831 int q = *p; 832 833 p++; 834 while (!(IS_EOF(conf, *p))) { 835 if (*p == q) { 836 if (*(p + 1) == q) { 837 p++; 838 } else { 839 break; 840 } 841 } 842 p++; 843 } 844 if (*p == q) 845 p++; 846 return p; 847 } 848 849 static void dump_value_doall_arg(const CONF_VALUE *a, BIO *out) 850 { 851 if (a->name) 852 BIO_printf(out, "[%s] %s=%s\n", a->section, a->name, a->value); 853 else 854 BIO_printf(out, "[[%s]]\n", a->section); 855 } 856 857 IMPLEMENT_LHASH_DOALL_ARG_CONST(CONF_VALUE, BIO); 858 859 static int def_dump(const CONF *conf, BIO *out) 860 { 861 lh_CONF_VALUE_doall_BIO(conf->data, dump_value_doall_arg, out); 862 return 1; 863 } 864 865 static int def_is_number(const CONF *conf, char c) 866 { 867 return IS_NUMBER(conf, c); 868 } 869 870 static int def_to_int(const CONF *conf, char c) 871 { 872 return c - '0'; 873 } 874