makemandb.c revision 1.46
1 /* $NetBSD: makemandb.c,v 1.46 2016/12/19 14:10:57 abhinav Exp $ */ 2 /* 3 * Copyright (c) 2011 Abhinav Upadhyay <er.abhinav.upadhyay (at) gmail.com> 4 * Copyright (c) 2011 Kristaps Dzonsons <kristaps (at) bsd.lv> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/cdefs.h> 20 __RCSID("$NetBSD: makemandb.c,v 1.46 2016/12/19 14:10:57 abhinav Exp $"); 21 22 #include <sys/stat.h> 23 #include <sys/types.h> 24 25 #include <assert.h> 26 #include <dirent.h> 27 #include <err.h> 28 #include <archive.h> 29 #include <libgen.h> 30 #include <md5.h> 31 #include <stdio.h> 32 #include <stdlib.h> 33 #include <string.h> 34 #include <unistd.h> 35 #include <util.h> 36 37 #include "apropos-utils.h" 38 #include "dist/man.h" 39 #include "dist/mandoc.h" 40 #include "dist/mdoc.h" 41 #include "dist/roff.h" 42 43 #define BUFLEN 1024 44 #define MDOC 0 //If the page is of mdoc(7) type 45 #define MAN 1 //If the page is of man(7) type 46 47 /* 48 * A data structure for holding section specific data. 49 */ 50 typedef struct secbuff { 51 char *data; 52 size_t buflen; //Total length of buffer allocated initially 53 size_t offset; // Current offset in the buffer. 54 } secbuff; 55 56 typedef struct makemandb_flags { 57 int optimize; 58 int limit; // limit the indexing to only NAME section 59 int recreate; // Database was created from scratch 60 int verbosity; // 0: quiet, 1: default, 2: verbose 61 } makemandb_flags; 62 63 typedef struct roff_mandb_rec { 64 /* Fields for mandb table */ 65 char *name; // for storing the name of the man page 66 char *name_desc; // for storing the one line description (.Nd) 67 secbuff desc; // for storing the DESCRIPTION section 68 secbuff lib; // for the LIBRARY section 69 secbuff return_vals; // RETURN VALUES 70 secbuff env; // ENVIRONMENT 71 secbuff files; // FILES 72 secbuff exit_status; // EXIT STATUS 73 secbuff diagnostics; // DIAGNOSTICS 74 secbuff errors; // ERRORS 75 char *section; 76 77 int xr_found; // To track whether a .Xr was seen when parsing a section 78 79 /* Fields for mandb_meta table */ 80 char *md5_hash; 81 dev_t device; 82 ino_t inode; 83 time_t mtime; 84 85 /* Fields for mandb_links table */ 86 char *machine; 87 char *links; //all the links to a page in a space separated form 88 char *file_path; 89 90 /* Non-db fields */ 91 int page_type; //Indicates the type of page: mdoc or man 92 } mandb_rec; 93 94 typedef void (*proff_nf)(const struct roff_node *n, mandb_rec *); 95 96 static void append(secbuff *sbuff, const char *src); 97 static void init_secbuffs(mandb_rec *); 98 static void free_secbuffs(mandb_rec *); 99 static int check_md5(const char *, sqlite3 *, const char *, char **, void *, size_t); 100 static void cleanup(mandb_rec *); 101 static void set_section(const struct roff_man *, mandb_rec *); 102 static void set_machine(const struct roff_man *, mandb_rec *); 103 static int insert_into_db(sqlite3 *, mandb_rec *); 104 static void begin_parse(const char *, struct mparse *, mandb_rec *, 105 const void *, size_t len); 106 static void proff_node(const struct roff_node *, mandb_rec *, const proff_nf *); 107 static void pmdoc_Nm(const struct roff_node *, mandb_rec *); 108 static void pmdoc_Nd(const struct roff_node *, mandb_rec *); 109 static void pmdoc_Sh(const struct roff_node *, mandb_rec *); 110 static void mdoc_parse_Sh(const struct roff_node *, mandb_rec *); 111 static void pmdoc_Xr(const struct roff_node *, mandb_rec *); 112 static void pmdoc_Pp(const struct roff_node *, mandb_rec *); 113 static void pmdoc_macro_handler(const struct roff_node *, mandb_rec *, int); 114 static void pman_parse_node(const struct roff_node *, secbuff *); 115 static void pman_parse_name(const struct roff_node *, mandb_rec *); 116 static void pman_sh(const struct roff_node *, mandb_rec *); 117 static void pman_block(const struct roff_node *, mandb_rec *); 118 static void traversedir(const char *, const char *, sqlite3 *, struct mparse *); 119 static void mdoc_parse_section(enum roff_sec, const char *, mandb_rec *); 120 static void man_parse_section(enum man_sec, const struct roff_node *, mandb_rec *); 121 static void build_file_cache(sqlite3 *, const char *, const char *, 122 struct stat *); 123 static void update_db(sqlite3 *, struct mparse *, mandb_rec *); 124 __dead static void usage(void); 125 static void optimize(sqlite3 *); 126 static char *parse_escape(const char *); 127 static void replace_hyph(char *); 128 static makemandb_flags mflags = { .verbosity = 1 }; 129 130 static const proff_nf mdocs[MDOC_MAX + 1] = { 131 NULL, /* Ap */ 132 NULL, /* Dd */ 133 NULL, /* Dt */ 134 NULL, /* Os */ 135 136 pmdoc_Sh, /* Sh */ 137 NULL, /* Ss */ 138 pmdoc_Pp, /* Pp */ 139 NULL, /* D1 */ 140 141 NULL, /* Dl */ 142 NULL, /* Bd */ 143 NULL, /* Ed */ 144 NULL, /* Bl */ 145 146 NULL, /* El */ 147 NULL, /* It */ 148 NULL, /* Ad */ 149 NULL, /* An */ 150 151 NULL, /* Ar */ 152 NULL, /* Cd */ 153 NULL, /* Cm */ 154 NULL, /* Dv */ 155 156 NULL, /* Er */ 157 NULL, /* Ev */ 158 NULL, /* Ex */ 159 NULL, /* Fa */ 160 161 NULL, /* Fd */ 162 NULL, /* Fl */ 163 NULL, /* Fn */ 164 NULL, /* Ft */ 165 166 NULL, /* Ic */ 167 NULL, /* In */ 168 NULL, /* Li */ 169 pmdoc_Nd, /* Nd */ 170 171 pmdoc_Nm, /* Nm */ 172 NULL, /* Op */ 173 NULL, /* Ot */ 174 NULL, /* Pa */ 175 176 NULL, /* Rv */ 177 NULL, /* St */ 178 NULL, /* Va */ 179 NULL, /* Vt */ 180 181 pmdoc_Xr, /* Xr */ 182 NULL, /* %A */ 183 NULL, /* %B */ 184 NULL, /* %D */ 185 186 NULL, /* %I */ 187 NULL, /* %J */ 188 NULL, /* %N */ 189 NULL, /* %O */ 190 191 NULL, /* %P */ 192 NULL, /* %R */ 193 NULL, /* %T */ 194 NULL, /* %V */ 195 196 NULL, /* Ac */ 197 NULL, /* Ao */ 198 NULL, /* Aq */ 199 NULL, /* At */ 200 201 NULL, /* Bc */ 202 NULL, /* Bf */ 203 NULL, /* Bo */ 204 NULL, /* Bq */ 205 206 NULL, /* Bsx */ 207 NULL, /* Bx */ 208 NULL, /* Db */ 209 NULL, /* Dc */ 210 211 NULL, /* Do */ 212 NULL, /* Dq */ 213 NULL, /* Ec */ 214 NULL, /* Ef */ 215 216 NULL, /* Em */ 217 NULL, /* Eo */ 218 NULL, /* Fx */ 219 NULL, /* Ms */ 220 221 NULL, /* No */ 222 NULL, /* Ns */ 223 NULL, /* Nx */ 224 NULL, /* Ox */ 225 226 NULL, /* Pc */ 227 NULL, /* Pf */ 228 NULL, /* Po */ 229 NULL, /* Pq */ 230 231 NULL, /* Qc */ 232 NULL, /* Ql */ 233 NULL, /* Qo */ 234 NULL, /* Qq */ 235 236 NULL, /* Re */ 237 NULL, /* Rs */ 238 NULL, /* Sc */ 239 NULL, /* So */ 240 241 NULL, /* Sq */ 242 NULL, /* Sm */ 243 NULL, /* Sx */ 244 NULL, /* Sy */ 245 246 NULL, /* Tn */ 247 NULL, /* Ux */ 248 NULL, /* Xc */ 249 NULL, /* Xo */ 250 251 NULL, /* Fo */ 252 NULL, /* Fc */ 253 NULL, /* Oo */ 254 NULL, /* Oc */ 255 256 NULL, /* Bk */ 257 NULL, /* Ek */ 258 NULL, /* Bt */ 259 NULL, /* Hf */ 260 261 NULL, /* Fr */ 262 NULL, /* Ud */ 263 NULL, /* Lb */ 264 NULL, /* Lp */ 265 266 NULL, /* Lk */ 267 NULL, /* Mt */ 268 NULL, /* Brq */ 269 NULL, /* Bro */ 270 271 NULL, /* Brc */ 272 NULL, /* %C */ 273 NULL, /* Es */ 274 NULL, /* En */ 275 276 NULL, /* Dx */ 277 NULL, /* %Q */ 278 NULL, /* br */ 279 NULL, /* sp */ 280 281 NULL, /* %U */ 282 NULL, /* Ta */ 283 NULL, /* ll */ 284 NULL, /* text */ 285 }; 286 287 static const proff_nf mans[MAN_MAX] = { 288 NULL, //br 289 NULL, //TH 290 pman_sh, //SH 291 NULL, //SS 292 NULL, //TP 293 NULL, //LP 294 NULL, //PP 295 NULL, //P 296 NULL, //IP 297 NULL, //HP 298 NULL, //SM 299 NULL, //SB 300 NULL, //BI 301 NULL, //IB 302 NULL, //BR 303 NULL, //RB 304 NULL, //R 305 pman_block, //B 306 NULL, //I 307 NULL, //IR 308 NULL, //RI 309 NULL, //sp 310 NULL, //nf 311 NULL, //fi 312 NULL, //RE 313 NULL, //RS 314 NULL, //DT 315 NULL, //UC 316 NULL, //PD 317 NULL, //AT 318 NULL, //in 319 NULL, //ft 320 NULL, //OP 321 NULL, //EX 322 NULL, //EE 323 NULL, //UR 324 NULL, //UE 325 NULL, //ll 326 }; 327 328 329 int 330 main(int argc, char *argv[]) 331 { 332 FILE *file; 333 const char *sqlstr, *manconf = NULL; 334 char *line, *command, *parent; 335 char *errmsg; 336 int ch; 337 struct mparse *mp; 338 sqlite3 *db; 339 ssize_t len; 340 size_t linesize; 341 struct roff_mandb_rec rec; 342 343 while ((ch = getopt(argc, argv, "C:floQqv")) != -1) { 344 switch (ch) { 345 case 'C': 346 manconf = optarg; 347 break; 348 case 'f': 349 mflags.recreate = 1; 350 break; 351 case 'l': 352 mflags.limit = 1; 353 break; 354 case 'o': 355 mflags.optimize = 1; 356 break; 357 case 'Q': 358 mflags.verbosity = 0; 359 break; 360 case 'q': 361 mflags.verbosity = 1; 362 break; 363 case 'v': 364 mflags.verbosity = 2; 365 break; 366 default: 367 usage(); 368 } 369 } 370 371 memset(&rec, 0, sizeof(rec)); 372 373 init_secbuffs(&rec); 374 mchars_alloc(); 375 mp = mparse_alloc(0, MANDOCLEVEL_BADARG, NULL, NULL); 376 377 if (manconf) { 378 char *arg; 379 size_t command_len = shquote(manconf, NULL, 0) + 1; 380 arg = emalloc(command_len); 381 shquote(manconf, arg, command_len); 382 easprintf(&command, "man -p -C %s", arg); 383 free(arg); 384 } else { 385 command = estrdup("man -p"); 386 manconf = MANCONF; 387 } 388 389 if (mflags.recreate) { 390 char *dbp = get_dbpath(manconf); 391 /* No error here, it will fail in init_db in the same call */ 392 if (dbp != NULL) 393 remove(dbp); 394 } 395 396 if ((db = init_db(MANDB_CREATE, manconf)) == NULL) 397 exit(EXIT_FAILURE); 398 399 sqlite3_exec(db, "PRAGMA synchronous = 0", NULL, NULL, &errmsg); 400 if (errmsg != NULL) { 401 warnx("%s", errmsg); 402 free(errmsg); 403 close_db(db); 404 exit(EXIT_FAILURE); 405 } 406 407 sqlite3_exec(db, "ATTACH DATABASE \':memory:\' AS metadb", NULL, NULL, 408 &errmsg); 409 if (errmsg != NULL) { 410 warnx("%s", errmsg); 411 free(errmsg); 412 close_db(db); 413 exit(EXIT_FAILURE); 414 } 415 416 417 /* Call man -p to get the list of man page dirs */ 418 if ((file = popen(command, "r")) == NULL) { 419 close_db(db); 420 err(EXIT_FAILURE, "fopen failed"); 421 } 422 free(command); 423 424 /* Begin the transaction for indexing the pages */ 425 sqlite3_exec(db, "BEGIN", NULL, NULL, &errmsg); 426 if (errmsg != NULL) { 427 warnx("%s", errmsg); 428 free(errmsg); 429 close_db(db); 430 exit(EXIT_FAILURE); 431 } 432 433 sqlstr = "CREATE TABLE metadb.file_cache(device, inode, mtime, parent," 434 " file PRIMARY KEY);" 435 "CREATE UNIQUE INDEX metadb.index_file_cache_dev" 436 " ON file_cache (device, inode)"; 437 438 sqlite3_exec(db, sqlstr, NULL, NULL, &errmsg); 439 if (errmsg != NULL) { 440 warnx("%s", errmsg); 441 free(errmsg); 442 close_db(db); 443 exit(EXIT_FAILURE); 444 } 445 446 if (mflags.verbosity) 447 printf("Building temporary file cache\n"); 448 line = NULL; 449 linesize = 0; 450 while ((len = getline(&line, &linesize, file)) != -1) { 451 /* Replace the new line character at the end of string with '\0' */ 452 line[len - 1] = '\0'; 453 parent = estrdup(line); 454 char *pdir = estrdup(dirname(parent)); 455 free(parent); 456 /* Traverse the man page directories and parse the pages */ 457 traversedir(pdir, line, db, mp); 458 free(pdir); 459 } 460 free(line); 461 462 if (pclose(file) == -1) { 463 close_db(db); 464 cleanup(&rec); 465 free_secbuffs(&rec); 466 err(EXIT_FAILURE, "pclose error"); 467 } 468 469 if (mflags.verbosity) 470 printf("Performing index update\n"); 471 update_db(db, mp, &rec); 472 mparse_free(mp); 473 mchars_free(); 474 free_secbuffs(&rec); 475 476 /* Commit the transaction */ 477 sqlite3_exec(db, "COMMIT", NULL, NULL, &errmsg); 478 if (errmsg != NULL) { 479 warnx("%s", errmsg); 480 free(errmsg); 481 close_db(db); 482 exit(EXIT_FAILURE); 483 } 484 485 if (mflags.optimize) 486 optimize(db); 487 488 close_db(db); 489 return 0; 490 } 491 492 /* 493 * traversedir -- 494 * Traverses the given directory recursively and passes all the man page files 495 * in the way to build_file_cache() 496 */ 497 static void 498 traversedir(const char *parent, const char *file, sqlite3 *db, 499 struct mparse *mp) 500 { 501 struct stat sb; 502 struct dirent *dirp; 503 DIR *dp; 504 char *buf; 505 506 if (stat(file, &sb) < 0) { 507 if (mflags.verbosity) 508 warn("stat failed: %s", file); 509 return; 510 } 511 512 /* If it is a directory, traverse it recursively */ 513 if (S_ISDIR(sb.st_mode)) { 514 if ((dp = opendir(file)) == NULL) { 515 if (mflags.verbosity) 516 warn("opendir error: %s", file); 517 return; 518 } 519 520 while ((dirp = readdir(dp)) != NULL) { 521 /* Avoid . and .. entries in a directory */ 522 if (strncmp(dirp->d_name, ".", 1)) { 523 easprintf(&buf, "%s/%s", file, dirp->d_name); 524 traversedir(parent, buf, db, mp); 525 free(buf); 526 } 527 } 528 closedir(dp); 529 return; 530 } 531 532 if (!S_ISREG(sb.st_mode)) 533 return; 534 535 if (sb.st_size == 0) { 536 if (mflags.verbosity) 537 warnx("Empty file: %s", file); 538 return; 539 } 540 build_file_cache(db, parent, file, &sb); 541 } 542 543 /* build_file_cache -- 544 * This function generates an md5 hash of the file passed as its 2nd parameter 545 * and stores it in a temporary table file_cache along with the full file path. 546 * This is done to support incremental updation of the database. 547 * The temporary table file_cache is dropped thereafter in the function 548 * update_db(), once the database has been updated. 549 */ 550 static void 551 build_file_cache(sqlite3 *db, const char *parent, const char *file, 552 struct stat *sb) 553 { 554 const char *sqlstr; 555 sqlite3_stmt *stmt = NULL; 556 int rc, idx; 557 assert(file != NULL); 558 dev_t device_cache = sb->st_dev; 559 ino_t inode_cache = sb->st_ino; 560 time_t mtime_cache = sb->st_mtime; 561 562 sqlstr = "INSERT INTO metadb.file_cache VALUES (:device, :inode," 563 " :mtime, :parent, :file)"; 564 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 565 if (rc != SQLITE_OK) { 566 if (mflags.verbosity) 567 warnx("%s", sqlite3_errmsg(db)); 568 return; 569 } 570 571 idx = sqlite3_bind_parameter_index(stmt, ":device"); 572 rc = sqlite3_bind_int64(stmt, idx, device_cache); 573 if (rc != SQLITE_OK) { 574 if (mflags.verbosity) 575 warnx("%s", sqlite3_errmsg(db)); 576 sqlite3_finalize(stmt); 577 return; 578 } 579 580 idx = sqlite3_bind_parameter_index(stmt, ":inode"); 581 rc = sqlite3_bind_int64(stmt, idx, inode_cache); 582 if (rc != SQLITE_OK) { 583 if (mflags.verbosity) 584 warnx("%s", sqlite3_errmsg(db)); 585 sqlite3_finalize(stmt); 586 return; 587 } 588 589 idx = sqlite3_bind_parameter_index(stmt, ":mtime"); 590 rc = sqlite3_bind_int64(stmt, idx, mtime_cache); 591 if (rc != SQLITE_OK) { 592 if (mflags.verbosity) 593 warnx("%s", sqlite3_errmsg(db)); 594 sqlite3_finalize(stmt); 595 return; 596 } 597 598 idx = sqlite3_bind_parameter_index(stmt, ":parent"); 599 rc = sqlite3_bind_text(stmt, idx, parent, -1, NULL); 600 if (rc != SQLITE_OK) { 601 if (mflags.verbosity) 602 warnx("%s", sqlite3_errmsg(db)); 603 sqlite3_finalize(stmt); 604 return; 605 } 606 607 idx = sqlite3_bind_parameter_index(stmt, ":file"); 608 rc = sqlite3_bind_text(stmt, idx, file, -1, NULL); 609 if (rc != SQLITE_OK) { 610 if (mflags.verbosity) 611 warnx("%s", sqlite3_errmsg(db)); 612 sqlite3_finalize(stmt); 613 return; 614 } 615 616 sqlite3_step(stmt); 617 sqlite3_finalize(stmt); 618 } 619 620 static void 621 update_existing_entry(sqlite3 *db, const char *file, const char *hash, 622 mandb_rec *rec, int *new_count, int *link_count, int *err_count) 623 { 624 int update_count, rc, idx; 625 const char *inner_sqlstr; 626 sqlite3_stmt *inner_stmt; 627 628 update_count = sqlite3_total_changes(db); 629 inner_sqlstr = "UPDATE mandb_meta SET device = :device," 630 " inode = :inode, mtime = :mtime WHERE" 631 " md5_hash = :md5 AND file = :file AND" 632 " (device <> :device2 OR inode <> " 633 " :inode2 OR mtime <> :mtime2)"; 634 rc = sqlite3_prepare_v2(db, inner_sqlstr, -1, &inner_stmt, NULL); 635 if (rc != SQLITE_OK) { 636 if (mflags.verbosity) 637 warnx("%s", sqlite3_errmsg(db)); 638 return; 639 } 640 idx = sqlite3_bind_parameter_index(inner_stmt, ":device"); 641 sqlite3_bind_int64(inner_stmt, idx, rec->device); 642 idx = sqlite3_bind_parameter_index(inner_stmt, ":inode"); 643 sqlite3_bind_int64(inner_stmt, idx, rec->inode); 644 idx = sqlite3_bind_parameter_index(inner_stmt, ":mtime"); 645 sqlite3_bind_int64(inner_stmt, idx, rec->mtime); 646 idx = sqlite3_bind_parameter_index(inner_stmt, ":md5"); 647 sqlite3_bind_text(inner_stmt, idx, hash, -1, NULL); 648 idx = sqlite3_bind_parameter_index(inner_stmt, ":file"); 649 sqlite3_bind_text(inner_stmt, idx, file, -1, NULL); 650 idx = sqlite3_bind_parameter_index(inner_stmt, ":device2"); 651 sqlite3_bind_int64(inner_stmt, idx, rec->device); 652 idx = sqlite3_bind_parameter_index(inner_stmt, ":inode2"); 653 sqlite3_bind_int64(inner_stmt, idx, rec->inode); 654 idx = sqlite3_bind_parameter_index(inner_stmt, ":mtime2"); 655 sqlite3_bind_int64(inner_stmt, idx, rec->mtime); 656 657 rc = sqlite3_step(inner_stmt); 658 if (rc == SQLITE_DONE) { 659 /* Check if an update has been performed. */ 660 if (update_count != sqlite3_total_changes(db)) { 661 if (mflags.verbosity == 2) 662 printf("Updated %s\n", file); 663 (*new_count)++; 664 } else { 665 /* Otherwise it was a hardlink. */ 666 (*link_count)++; 667 } 668 } else { 669 if (mflags.verbosity == 2) 670 warnx("Could not update the meta data for %s", file); 671 (*err_count)++; 672 } 673 sqlite3_finalize(inner_stmt); 674 } 675 676 /* read_and_decompress -- 677 * Reads the given file into memory. If it is compressed, decompress 678 * it before returning to the caller. 679 */ 680 static int 681 read_and_decompress(const char *file, void **bufp, size_t *len) 682 { 683 size_t off; 684 ssize_t r; 685 struct archive *a; 686 struct archive_entry *ae; 687 char *buf; 688 689 if ((a = archive_read_new()) == NULL) 690 errx(EXIT_FAILURE, "memory allocation failed"); 691 692 *bufp = NULL; 693 if (archive_read_support_compression_all(a) != ARCHIVE_OK || 694 archive_read_support_format_raw(a) != ARCHIVE_OK || 695 archive_read_open_filename(a, file, 65536) != ARCHIVE_OK || 696 archive_read_next_header(a, &ae) != ARCHIVE_OK) 697 goto archive_error; 698 *len = 65536; 699 buf = emalloc(*len); 700 off = 0; 701 for (;;) { 702 r = archive_read_data(a, buf + off, *len - off); 703 if (r == ARCHIVE_OK) { 704 archive_read_finish(a); 705 *bufp = buf; 706 *len = off; 707 return 0; 708 } 709 if (r <= 0) { 710 free(buf); 711 break; 712 } 713 off += r; 714 if (off == *len) { 715 *len *= 2; 716 if (*len < off) { 717 if (mflags.verbosity) 718 warnx("File too large: %s", file); 719 free(buf); 720 archive_read_finish(a); 721 return -1; 722 } 723 buf = erealloc(buf, *len); 724 } 725 } 726 727 archive_error: 728 warnx("Error while reading `%s': %s", file, archive_error_string(a)); 729 archive_read_finish(a); 730 return -1; 731 } 732 733 /* update_db -- 734 * Does an incremental updation of the database by checking the file_cache. 735 * It parses and adds the pages which are present in file_cache, 736 * but not in the database. 737 * It also removes the pages which are present in the databse, 738 * but not in the file_cache. 739 */ 740 static void 741 update_db(sqlite3 *db, struct mparse *mp, mandb_rec *rec) 742 { 743 const char *sqlstr; 744 sqlite3_stmt *stmt = NULL; 745 char *file; 746 char *parent; 747 char *errmsg = NULL; 748 char *md5sum; 749 void *buf; 750 size_t buflen; 751 struct sql_row { 752 struct sql_row *next; 753 dev_t device; 754 ino_t inode; 755 time_t mtime; 756 char *parent; 757 char *file; 758 } *rows, *row; 759 int new_count = 0; /* Counter for newly indexed/updated pages */ 760 int total_count = 0; /* Counter for total number of pages */ 761 int err_count = 0; /* Counter for number of failed pages */ 762 int link_count = 0; /* Counter for number of hard/sym links */ 763 int md5_status; 764 int rc; 765 766 sqlstr = "SELECT device, inode, mtime, parent, file" 767 " FROM metadb.file_cache fc" 768 " WHERE NOT EXISTS(SELECT 1 FROM mandb_meta WHERE" 769 " device = fc.device AND inode = fc.inode AND " 770 " mtime = fc.mtime AND file = fc.file)"; 771 772 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 773 if (rc != SQLITE_OK) { 774 if (mflags.verbosity) 775 warnx("%s", sqlite3_errmsg(db)); 776 close_db(db); 777 errx(EXIT_FAILURE, "Could not query file cache"); 778 } 779 780 buf = NULL; 781 rows = NULL; 782 while (sqlite3_step(stmt) == SQLITE_ROW) { 783 row = emalloc(sizeof(struct sql_row)); 784 row->device = sqlite3_column_int64(stmt, 0); 785 row->inode = sqlite3_column_int64(stmt, 1); 786 row->mtime = sqlite3_column_int64(stmt, 2); 787 row->parent = estrdup((const char *) sqlite3_column_text(stmt, 3)); 788 row->file = estrdup((const char *) sqlite3_column_text(stmt, 4)); 789 row->next = rows; 790 rows = row; 791 total_count++; 792 } 793 sqlite3_finalize(stmt); 794 795 for ( ; rows != NULL; free(parent), free(file), free(buf)) { 796 row = rows; 797 rows = rows->next; 798 799 rec->device = row->device; 800 rec->inode = row->inode; 801 rec->mtime = row->mtime; 802 parent = row->parent; 803 file = row->file; 804 free(row); 805 806 if (read_and_decompress(file, &buf, &buflen)) { 807 err_count++; 808 continue; 809 } 810 md5_status = check_md5(file, db, "mandb_meta", &md5sum, buf, 811 buflen); 812 assert(md5sum != NULL); 813 if (md5_status == -1) { 814 if (mflags.verbosity) 815 warnx("An error occurred in checking md5 value" 816 " for file %s", file); 817 err_count++; 818 continue; 819 } 820 821 if (md5_status == 0) { 822 /* 823 * The MD5 hash is already present in the database, 824 * so simply update the metadata. 825 */ 826 update_existing_entry(db, file, md5sum, rec, 827 &new_count, &link_count, &err_count); 828 free(md5sum); 829 continue; 830 } 831 832 if (md5_status == 1) { 833 /* 834 * The MD5 hash was not present in the database. 835 * This means is either a new file or an updated file. 836 * We should go ahead with parsing. 837 */ 838 if (chdir(parent) == -1) { 839 if (mflags.verbosity) 840 warn("chdir failed for `%s', could " 841 "not index `%s'", parent, file); 842 err_count++; 843 free(md5sum); 844 continue; 845 } 846 847 if (mflags.verbosity == 2) 848 printf("Parsing: %s\n", file); 849 rec->md5_hash = md5sum; 850 rec->file_path = estrdup(file); 851 // file_path is freed by insert_into_db itself. 852 begin_parse(file, mp, rec, buf, buflen); 853 if (insert_into_db(db, rec) < 0) { 854 if (mflags.verbosity) 855 warnx("Error in indexing `%s'", file); 856 err_count++; 857 } else { 858 new_count++; 859 } 860 } 861 } 862 863 if (mflags.verbosity == 2) { 864 printf("Number of new or updated pages encountered: %d\n" 865 "Number of hard links found: %d\n" 866 "Number of pages that were successfully" 867 " indexed or updated: %d\n" 868 "Number of pages that could not be indexed" 869 " due to errors: %d\n", 870 total_count - link_count, link_count, new_count, err_count); 871 } 872 873 if (mflags.recreate) 874 return; 875 876 if (mflags.verbosity == 2) 877 printf("Deleting stale index entries\n"); 878 879 sqlstr = "DELETE FROM mandb_meta WHERE file NOT IN" 880 " (SELECT file FROM metadb.file_cache);" 881 "DELETE FROM mandb_links WHERE md5_hash NOT IN" 882 " (SELECT md5_hash from mandb_meta);" 883 "DROP TABLE metadb.file_cache;" 884 "DELETE FROM mandb WHERE rowid NOT IN" 885 " (SELECT id FROM mandb_meta);"; 886 887 sqlite3_exec(db, sqlstr, NULL, NULL, &errmsg); 888 if (errmsg != NULL) { 889 warnx("Removing old entries failed: %s", errmsg); 890 warnx("Please rebuild database from scratch with -f."); 891 free(errmsg); 892 return; 893 } 894 } 895 896 /* 897 * begin_parse -- 898 * parses the man page using libmandoc 899 */ 900 static void 901 begin_parse(const char *file, struct mparse *mp, mandb_rec *rec, 902 const void *buf, size_t len) 903 { 904 struct roff_man *roff; 905 mparse_reset(mp); 906 907 rec->xr_found = 0; 908 909 if (mparse_readmem(mp, buf, len, file) >= MANDOCLEVEL_BADARG) { 910 /* Printing this warning at verbosity level 2 911 * because some packages from pkgsrc might trigger several 912 * of such warnings. 913 */ 914 if (mflags.verbosity == 2) 915 warnx("%s: Parse failure", file); 916 return; 917 } 918 919 mparse_result(mp, &roff, NULL); 920 if (roff == NULL) { 921 if (mflags.verbosity == 2) 922 warnx("Not a roff(7) page"); 923 return; 924 } 925 926 if (roff->macroset == MACROSET_MDOC) { 927 mdoc_validate(roff); 928 rec->page_type = MDOC; 929 proff_node(roff->first->child, rec, mdocs); 930 } else if (roff->macroset == MACROSET_MAN) { 931 man_validate(roff); 932 rec->page_type = MAN; 933 proff_node(roff->first->child, rec, mans); 934 } else 935 warnx("Unknown macroset %d", roff->macroset); 936 set_machine(roff, rec); 937 set_section(roff, rec); 938 } 939 940 /* 941 * set_section -- 942 * Extracts the section number and normalizes it to only the numeric part 943 * (Which should be the first character of the string). 944 */ 945 static void 946 set_section(const struct roff_man *rm, mandb_rec *rec) 947 { 948 if (!rm) 949 return; 950 const struct roff_meta *rm_meta = &rm->meta; 951 const char *s = rm_meta->msec == NULL ? "?" : rm_meta->msec; 952 easprintf(&rec->section, "%s", s); 953 if (rec->section[0] == '?' && mflags.verbosity == 2) 954 warnx("%s: Missing section number", rec->file_path); 955 } 956 957 /* 958 * get_machine -- 959 * Extracts the machine architecture information if available. 960 */ 961 static void 962 set_machine(const struct roff_man *rm, mandb_rec *rec) 963 { 964 if (rm == NULL) 965 return; 966 const struct roff_meta *rm_meta = &rm->meta; 967 if (rm_meta->arch) 968 rec->machine = estrdup(rm_meta->arch); 969 } 970 971 /* 972 * pmdoc_Nm -- 973 * Extracts the Name of the manual page from the .Nm macro 974 */ 975 static void 976 pmdoc_Nm(const struct roff_node *n, mandb_rec *rec) 977 { 978 if (n->sec != SEC_NAME) 979 return; 980 981 for (n = n->child; n; n = n->next) { 982 if (n->type == ROFFT_TEXT) { 983 char *escaped_name = parse_escape(n->string); 984 concat(&rec->name, escaped_name); 985 free(escaped_name); 986 } 987 } 988 } 989 990 /* 991 * pmdoc_Nd -- 992 * Extracts the one line description of the man page from the .Nd macro 993 */ 994 static void 995 pmdoc_Nd(const struct roff_node *n, mandb_rec *rec) 996 { 997 if (n->type == ROFFT_BODY) 998 deroff(&rec->name_desc, n); 999 if (rec->name_desc) 1000 replace_hyph(rec->name_desc); 1001 1002 } 1003 1004 /* 1005 * pmdoc_macro_handler-- 1006 * This function is a single point of handling all the special macros that we 1007 * want to handle especially. For example the .Xr macro for properly parsing 1008 * the referenced page name along with the section number, or the .Pp macro 1009 * for adding a new line whenever we encounter it. 1010 */ 1011 static void 1012 pmdoc_macro_handler(const struct roff_node *n, mandb_rec *rec, int doct) 1013 { 1014 const struct roff_node *sn; 1015 assert(n); 1016 1017 switch (doct) { 1018 /* Parse the man page references. 1019 * Basically the .Xr macros are used like: 1020 * .Xr ls 1 1021 * and formatted like this: 1022 * ls(1) 1023 * Prepare a buffer to format the data like the above example and call 1024 * pmdoc_parse_section to append it. 1025 */ 1026 case MDOC_Xr: 1027 n = n->child; 1028 while (n->type != ROFFT_TEXT && n->next) 1029 n = n->next; 1030 1031 if (n && n->type != ROFFT_TEXT) 1032 return; 1033 sn = n; 1034 if (n->next) 1035 n = n->next; 1036 1037 while (n->type != ROFFT_TEXT && n->next) 1038 n = n->next; 1039 1040 if (n && n->type == ROFFT_TEXT) { 1041 char *buf; 1042 easprintf(&buf, "%s(%s)", sn->string, n->string); 1043 mdoc_parse_section(n->sec, buf, rec); 1044 free(buf); 1045 } 1046 1047 break; 1048 1049 /* Parse the .Pp macro to add a new line */ 1050 case MDOC_Pp: 1051 if (n->type == ROFFT_TEXT) 1052 mdoc_parse_section(n->sec, "\n", rec); 1053 break; 1054 default: 1055 break; 1056 } 1057 1058 } 1059 1060 /* 1061 * pmdoc_Xr, pmdoc_Pp-- 1062 * Empty stubs. 1063 * The parser calls these functions each time it encounters 1064 * a .Xr or .Pp macro. We are parsing all the data from 1065 * the pmdoc_Sh function, so don't do anything here. 1066 * (See if else blocks in pmdoc_Sh.) 1067 */ 1068 static void 1069 pmdoc_Xr(const struct roff_node *n, mandb_rec *rec) 1070 { 1071 } 1072 1073 static void 1074 pmdoc_Pp(const struct roff_node *n, mandb_rec *rec) 1075 { 1076 } 1077 1078 /* 1079 * pmdoc_Sh -- 1080 * Called when a .Sh macro is encountered and tries to parse its body 1081 */ 1082 static void 1083 pmdoc_Sh(const struct roff_node *n, mandb_rec *rec) 1084 { 1085 if (n == NULL) 1086 return; 1087 1088 switch (n->sec) { 1089 case SEC_NAME: 1090 case SEC_SYNOPSIS: 1091 case SEC_EXAMPLES: 1092 case SEC_STANDARDS: 1093 case SEC_HISTORY: 1094 case SEC_AUTHORS: 1095 case SEC_BUGS: 1096 /* 1097 * We don't care about text from these sections 1098 */ 1099 return; 1100 default: 1101 break; 1102 } 1103 1104 if (n->type == ROFFT_BLOCK) 1105 mdoc_parse_Sh(n->body, rec); 1106 } 1107 1108 /* 1109 * Called from pmdoc_Sh to parse body of a .Sh macro. It calls 1110 * mdoc_parse_section to append the data to the section specific buffer. 1111 * Two special macros which may occur inside the body of Sh are .Nm and .Xr and 1112 * they need special handling, thus the separate if branches for them. 1113 */ 1114 static void 1115 mdoc_parse_Sh(const struct roff_node *n, mandb_rec *rec) 1116 { 1117 if (n == NULL || (n->type != ROFFT_TEXT && n->tok == MDOC_MAX)) 1118 return; 1119 int xr_found = 0; 1120 1121 if (n->type == ROFFT_TEXT) { 1122 mdoc_parse_section(n->sec, n->string, rec); 1123 } else if (mdocs[n->tok] == pmdoc_Nm && rec->name != NULL) { 1124 /* 1125 * When encountering a .Nm macro, substitute it 1126 * with its previously cached value of the argument. 1127 */ 1128 mdoc_parse_section(n->sec, rec->name, rec); 1129 } else if (mdocs[n->tok] == pmdoc_Xr) { 1130 /* 1131 * When encountering other inline macros, 1132 * call pmdoc_macro_handler. 1133 */ 1134 pmdoc_macro_handler(n, rec, MDOC_Xr); 1135 xr_found = 1; 1136 } else if (mdocs[n->tok] == pmdoc_Pp) { 1137 pmdoc_macro_handler(n, rec, MDOC_Pp); 1138 } 1139 1140 /* 1141 * If an Xr macro was encountered then the child node has 1142 * already been explored by pmdoc_macro_handler. 1143 */ 1144 if (xr_found == 0) 1145 mdoc_parse_Sh(n->child, rec); 1146 mdoc_parse_Sh(n->next, rec); 1147 } 1148 1149 /* 1150 * mdoc_parse_section-- 1151 * Utility function for parsing sections of the mdoc type pages. 1152 * Takes two params: 1153 * 1. sec is an enum which indicates the section in which we are present 1154 * 2. string is the string which we need to append to the secbuff for this 1155 * particular section. 1156 * The function appends string to the global section buffer and returns. 1157 */ 1158 static void 1159 mdoc_parse_section(enum roff_sec sec, const char *string, mandb_rec *rec) 1160 { 1161 /* 1162 * If the user specified the 'l' flag, then parse and store only the 1163 * NAME section. Ignore the rest. 1164 */ 1165 if (mflags.limit) 1166 return; 1167 1168 switch (sec) { 1169 case SEC_LIBRARY: 1170 append(&rec->lib, string); 1171 break; 1172 case SEC_RETURN_VALUES: 1173 append(&rec->return_vals, string); 1174 break; 1175 case SEC_ENVIRONMENT: 1176 append(&rec->env, string); 1177 break; 1178 case SEC_FILES: 1179 append(&rec->files, string); 1180 break; 1181 case SEC_EXIT_STATUS: 1182 append(&rec->exit_status, string); 1183 break; 1184 case SEC_DIAGNOSTICS: 1185 append(&rec->diagnostics, string); 1186 break; 1187 case SEC_ERRORS: 1188 append(&rec->errors, string); 1189 break; 1190 default: 1191 append(&rec->desc, string); 1192 break; 1193 } 1194 } 1195 1196 static void 1197 proff_node(const struct roff_node *n, mandb_rec *rec, const proff_nf *func) 1198 { 1199 if (n == NULL) 1200 return; 1201 1202 switch (n->type) { 1203 case (ROFFT_BODY): 1204 /* FALLTHROUGH */ 1205 case (ROFFT_BLOCK): 1206 /* FALLTHROUGH */ 1207 case (ROFFT_ELEM): 1208 if (func[n->tok] != NULL) 1209 (*func[n->tok])(n, rec); 1210 break; 1211 default: 1212 break; 1213 } 1214 1215 proff_node(n->child, rec, func); 1216 proff_node(n->next, rec, func); 1217 } 1218 1219 /* 1220 * pman_parse_name -- 1221 * Parses the NAME section and puts the complete content in the name_desc 1222 * variable. 1223 */ 1224 static void 1225 pman_parse_name(const struct roff_node *n, mandb_rec *rec) 1226 { 1227 if (n == NULL) 1228 return; 1229 1230 if (n->type == ROFFT_TEXT) { 1231 char *tmp = parse_escape(n->string); 1232 concat(&rec->name_desc, tmp); 1233 free(tmp); 1234 } 1235 1236 if (n->child) 1237 pman_parse_name(n->child, rec); 1238 1239 if(n->next) 1240 pman_parse_name(n->next, rec); 1241 } 1242 1243 /* 1244 * A stub function to be able to parse the macros like .B embedded inside 1245 * a section. 1246 */ 1247 static void 1248 pman_block(const struct roff_node *n, mandb_rec *rec) 1249 { 1250 } 1251 1252 /* 1253 * pman_sh -- 1254 * This function does one of the two things: 1255 * 1. If the present section is NAME, then it will: 1256 * (a) Extract the name of the page (in case of multiple comma separated 1257 * names, it will pick up the first one). 1258 * (b) Build a space spearated list of all the symlinks/hardlinks to 1259 * this page and store in the buffer 'links'. These are extracted from 1260 * the comma separated list of names in the NAME section as well. 1261 * (c) Move on to the one line description section, which is after the list 1262 * of names in the NAME section. 1263 * 2. Otherwise, it will check the section name and call the man_parse_section 1264 * function, passing the enum corresponding to that section. 1265 */ 1266 static void 1267 pman_sh(const struct roff_node *n, mandb_rec *rec) 1268 { 1269 static const struct { 1270 enum man_sec section; 1271 const char *header; 1272 } mapping[] = { 1273 { MANSEC_DESCRIPTION, "DESCRIPTION" }, 1274 { MANSEC_SYNOPSIS, "SYNOPSIS" }, 1275 { MANSEC_LIBRARY, "LIBRARY" }, 1276 { MANSEC_ERRORS, "ERRORS" }, 1277 { MANSEC_FILES, "FILES" }, 1278 { MANSEC_RETURN_VALUES, "RETURN VALUE" }, 1279 { MANSEC_RETURN_VALUES, "RETURN VALUES" }, 1280 { MANSEC_EXIT_STATUS, "EXIT STATUS" }, 1281 { MANSEC_EXAMPLES, "EXAMPLES" }, 1282 { MANSEC_EXAMPLES, "EXAMPLE" }, 1283 { MANSEC_STANDARDS, "STANDARDS" }, 1284 { MANSEC_HISTORY, "HISTORY" }, 1285 { MANSEC_BUGS, "BUGS" }, 1286 { MANSEC_AUTHORS, "AUTHORS" }, 1287 { MANSEC_COPYRIGHT, "COPYRIGHT" }, 1288 }; 1289 const struct roff_node *head; 1290 char *name_desc; 1291 size_t sz; 1292 size_t i; 1293 1294 if ((head = n->parent->head) == NULL || (head = head->child) == NULL || 1295 head->type != ROFFT_TEXT) 1296 return; 1297 1298 /* 1299 * Check if this section should be extracted and 1300 * where it should be stored. Handled the trival cases first. 1301 */ 1302 for (i = 0; i < sizeof(mapping) / sizeof(mapping[0]); ++i) { 1303 if (strcmp(head->string, mapping[i].header) == 0) { 1304 man_parse_section(mapping[i].section, n, rec); 1305 return; 1306 } 1307 } 1308 1309 if (strcmp(head->string, "NAME") == 0) { 1310 /* 1311 * We are in the NAME section. 1312 * pman_parse_name will put the complete content in name_desc. 1313 */ 1314 pman_parse_name(n, rec); 1315 1316 name_desc = rec->name_desc; 1317 if (name_desc == NULL) 1318 return; 1319 1320 /* Remove any leading spaces. */ 1321 while (name_desc[0] == ' ') 1322 name_desc++; 1323 1324 /* If the line begins with a "\&", avoid those */ 1325 if (name_desc[0] == '\\' && name_desc[1] == '&') 1326 name_desc += 2; 1327 1328 /* Now name_desc should be left with a comma-space 1329 * separated list of names and the one line description 1330 * of the page: 1331 * "a, b, c \- sample description" 1332 * Take out the first name, before the first comma 1333 * (or space) and store it in rec->name. 1334 * If the page has aliases then they should be 1335 * in the form of a comma separated list. 1336 * Keep looping while there is a comma in name_desc, 1337 * extract the alias name and store in rec->links. 1338 * When there are no more commas left, break out. 1339 */ 1340 int has_alias = 0; // Any more aliases left? 1341 while (*name_desc) { 1342 /* Remove any leading spaces or hyphens. */ 1343 if (name_desc[0] == ' ' || name_desc[0] == '-') { 1344 name_desc++; 1345 continue; 1346 } 1347 sz = strcspn(name_desc, ", "); 1348 1349 /* Extract the first term and store it in rec->name. */ 1350 if (rec->name == NULL) { 1351 if (name_desc[sz] == ',') 1352 has_alias = 1; 1353 rec->name = estrndup(name_desc, sz); 1354 /* XXX This would only happen with a poorly 1355 * written man page, maybe warn? */ 1356 if (name_desc[sz] == '\0') 1357 break; 1358 name_desc += sz + 1; 1359 continue; 1360 } 1361 1362 /* 1363 * Once rec->name is set, rest of the names 1364 * are to be treated as links or aliases. 1365 */ 1366 if (rec->name && has_alias) { 1367 if (name_desc[sz] != ',') { 1368 /* No more commas left --> no more 1369 * aliases to take out */ 1370 has_alias = 0; 1371 } 1372 concat2(&rec->links, name_desc, sz); 1373 /* XXX This would only happen with a poorly 1374 * written man page, maybe warn? */ 1375 if (name_desc[sz] == '\0') 1376 break; 1377 name_desc += sz + 1; 1378 continue; 1379 } 1380 break; 1381 } 1382 1383 /* Parse any escape sequences that might be there */ 1384 char *temp = parse_escape(name_desc); 1385 free(rec->name_desc); 1386 rec->name_desc = temp; 1387 temp = parse_escape(rec->name); 1388 free(rec->name); 1389 rec->name = temp; 1390 return; 1391 } 1392 1393 /* The RETURN VALUE section might be specified in multiple ways */ 1394 if (strcmp(head->string, "RETURN") == 0 && 1395 head->next != NULL && head->next->type == ROFFT_TEXT && 1396 (strcmp(head->next->string, "VALUE") == 0 || 1397 strcmp(head->next->string, "VALUES") == 0)) { 1398 man_parse_section(MANSEC_RETURN_VALUES, n, rec); 1399 return; 1400 } 1401 1402 /* 1403 * EXIT STATUS section can also be specified all on one line or on two 1404 * separate lines. 1405 */ 1406 if (strcmp(head->string, "EXIT") == 0 && 1407 head->next != NULL && head->next->type == ROFFT_TEXT && 1408 strcmp(head->next->string, "STATUS") == 0) { 1409 man_parse_section(MANSEC_EXIT_STATUS, n, rec); 1410 return; 1411 } 1412 1413 /* Store the rest of the content in desc. */ 1414 man_parse_section(MANSEC_NONE, n, rec); 1415 } 1416 1417 /* 1418 * pman_parse_node -- 1419 * Generic function to iterate through a node. Usually called from 1420 * man_parse_section to parse a particular section of the man page. 1421 */ 1422 static void 1423 pman_parse_node(const struct roff_node *n, secbuff *s) 1424 { 1425 if (n == NULL) 1426 return; 1427 1428 if (n->type == ROFFT_TEXT) 1429 append(s, n->string); 1430 1431 pman_parse_node(n->child, s); 1432 pman_parse_node(n->next, s); 1433 } 1434 1435 /* 1436 * man_parse_section -- 1437 * Takes two parameters: 1438 * sec: Tells which section we are present in 1439 * n: Is the present node of the AST. 1440 * Depending on the section, we call pman_parse_node to parse that section and 1441 * concatenate the content from that section into the buffer for that section. 1442 */ 1443 static void 1444 man_parse_section(enum man_sec sec, const struct roff_node *n, mandb_rec *rec) 1445 { 1446 /* 1447 * If the user sepecified the 'l' flag then just parse 1448 * the NAME section, ignore the rest. 1449 */ 1450 if (mflags.limit) 1451 return; 1452 1453 switch (sec) { 1454 case MANSEC_LIBRARY: 1455 pman_parse_node(n, &rec->lib); 1456 break; 1457 case MANSEC_RETURN_VALUES: 1458 pman_parse_node(n, &rec->return_vals); 1459 break; 1460 case MANSEC_ENVIRONMENT: 1461 pman_parse_node(n, &rec->env); 1462 break; 1463 case MANSEC_FILES: 1464 pman_parse_node(n, &rec->files); 1465 break; 1466 case MANSEC_EXIT_STATUS: 1467 pman_parse_node(n, &rec->exit_status); 1468 break; 1469 case MANSEC_DIAGNOSTICS: 1470 pman_parse_node(n, &rec->diagnostics); 1471 break; 1472 case MANSEC_ERRORS: 1473 pman_parse_node(n, &rec->errors); 1474 break; 1475 case MANSEC_NAME: 1476 case MANSEC_SYNOPSIS: 1477 case MANSEC_EXAMPLES: 1478 case MANSEC_STANDARDS: 1479 case MANSEC_HISTORY: 1480 case MANSEC_BUGS: 1481 case MANSEC_AUTHORS: 1482 case MANSEC_COPYRIGHT: 1483 break; 1484 default: 1485 pman_parse_node(n, &rec->desc); 1486 break; 1487 } 1488 1489 } 1490 1491 /* 1492 * insert_into_db -- 1493 * Inserts the parsed data of the man page in the Sqlite databse. 1494 * If any of the values is NULL, then we cleanup and return -1 indicating 1495 * an error. 1496 * Otherwise, store the data in the database and return 0. 1497 */ 1498 static int 1499 insert_into_db(sqlite3 *db, mandb_rec *rec) 1500 { 1501 int rc = 0; 1502 int idx = -1; 1503 const char *sqlstr = NULL; 1504 sqlite3_stmt *stmt = NULL; 1505 char *ln = NULL; 1506 char *errmsg = NULL; 1507 long int mandb_rowid; 1508 1509 /* 1510 * At the very minimum we want to make sure that we store 1511 * the following data: 1512 * Name, one line description, and the MD5 hash 1513 */ 1514 if (rec->name == NULL || rec->name_desc == NULL || 1515 rec->md5_hash == NULL) { 1516 cleanup(rec); 1517 return -1; 1518 } 1519 1520 /* Write null byte at the end of all the sec_buffs */ 1521 rec->desc.data[rec->desc.offset] = 0; 1522 rec->lib.data[rec->lib.offset] = 0; 1523 rec->env.data[rec->env.offset] = 0; 1524 rec->return_vals.data[rec->return_vals.offset] = 0; 1525 rec->exit_status.data[rec->exit_status.offset] = 0; 1526 rec->files.data[rec->files.offset] = 0; 1527 rec->diagnostics.data[rec->diagnostics.offset] = 0; 1528 rec->errors.data[rec->errors.offset] = 0; 1529 1530 /* 1531 * In case of a mdoc page: (sorry, no better place to put this code) 1532 * parse the comma separated list of names of man pages, 1533 * the first name will be stored in the mandb table, rest will be 1534 * treated as links and put in the mandb_links table. 1535 */ 1536 if (rec->page_type == MDOC) { 1537 char *tmp; 1538 rec->links = estrdup(rec->name); 1539 free(rec->name); 1540 size_t sz = strcspn(rec->links, " \0"); 1541 rec->name = emalloc(sz + 1); 1542 memcpy(rec->name, rec->links, sz); 1543 if(rec->name[sz - 1] == ',') 1544 rec->name[sz - 1] = 0; 1545 else 1546 rec->name[sz] = 0; 1547 while (rec->links[sz] == ' ') 1548 ++sz; 1549 tmp = estrdup(rec->links + sz); 1550 free(rec->links); 1551 rec->links = tmp; 1552 } 1553 1554 /*------------------------ Populate the mandb table---------------------------*/ 1555 sqlstr = "INSERT INTO mandb VALUES (:section, :name, :name_desc, :desc," 1556 " :lib, :return_vals, :env, :files, :exit_status," 1557 " :diagnostics, :errors, :md5_hash, :machine)"; 1558 1559 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1560 if (rc != SQLITE_OK) 1561 goto Out; 1562 1563 idx = sqlite3_bind_parameter_index(stmt, ":name"); 1564 rc = sqlite3_bind_text(stmt, idx, rec->name, -1, NULL); 1565 if (rc != SQLITE_OK) { 1566 sqlite3_finalize(stmt); 1567 goto Out; 1568 } 1569 1570 idx = sqlite3_bind_parameter_index(stmt, ":section"); 1571 rc = sqlite3_bind_text(stmt, idx, rec->section, -1, NULL); 1572 if (rc != SQLITE_OK) { 1573 sqlite3_finalize(stmt); 1574 goto Out; 1575 } 1576 1577 idx = sqlite3_bind_parameter_index(stmt, ":name_desc"); 1578 rc = sqlite3_bind_text(stmt, idx, rec->name_desc, -1, NULL); 1579 if (rc != SQLITE_OK) { 1580 sqlite3_finalize(stmt); 1581 goto Out; 1582 } 1583 1584 idx = sqlite3_bind_parameter_index(stmt, ":desc"); 1585 rc = sqlite3_bind_text(stmt, idx, rec->desc.data, 1586 rec->desc.offset + 1, NULL); 1587 if (rc != SQLITE_OK) { 1588 sqlite3_finalize(stmt); 1589 goto Out; 1590 } 1591 1592 idx = sqlite3_bind_parameter_index(stmt, ":lib"); 1593 rc = sqlite3_bind_text(stmt, idx, rec->lib.data, 1594 rec->lib.offset + 1, NULL); 1595 if (rc != SQLITE_OK) { 1596 sqlite3_finalize(stmt); 1597 goto Out; 1598 } 1599 1600 idx = sqlite3_bind_parameter_index(stmt, ":return_vals"); 1601 rc = sqlite3_bind_text(stmt, idx, rec->return_vals.data, 1602 rec->return_vals.offset + 1, NULL); 1603 if (rc != SQLITE_OK) { 1604 sqlite3_finalize(stmt); 1605 goto Out; 1606 } 1607 1608 idx = sqlite3_bind_parameter_index(stmt, ":env"); 1609 rc = sqlite3_bind_text(stmt, idx, rec->env.data, 1610 rec->env.offset + 1, NULL); 1611 if (rc != SQLITE_OK) { 1612 sqlite3_finalize(stmt); 1613 goto Out; 1614 } 1615 1616 idx = sqlite3_bind_parameter_index(stmt, ":files"); 1617 rc = sqlite3_bind_text(stmt, idx, rec->files.data, 1618 rec->files.offset + 1, NULL); 1619 if (rc != SQLITE_OK) { 1620 sqlite3_finalize(stmt); 1621 goto Out; 1622 } 1623 1624 idx = sqlite3_bind_parameter_index(stmt, ":exit_status"); 1625 rc = sqlite3_bind_text(stmt, idx, rec->exit_status.data, 1626 rec->exit_status.offset + 1, NULL); 1627 if (rc != SQLITE_OK) { 1628 sqlite3_finalize(stmt); 1629 goto Out; 1630 } 1631 1632 idx = sqlite3_bind_parameter_index(stmt, ":diagnostics"); 1633 rc = sqlite3_bind_text(stmt, idx, rec->diagnostics.data, 1634 rec->diagnostics.offset + 1, NULL); 1635 if (rc != SQLITE_OK) { 1636 sqlite3_finalize(stmt); 1637 goto Out; 1638 } 1639 1640 idx = sqlite3_bind_parameter_index(stmt, ":errors"); 1641 rc = sqlite3_bind_text(stmt, idx, rec->errors.data, 1642 rec->errors.offset + 1, NULL); 1643 if (rc != SQLITE_OK) { 1644 sqlite3_finalize(stmt); 1645 goto Out; 1646 } 1647 1648 idx = sqlite3_bind_parameter_index(stmt, ":md5_hash"); 1649 rc = sqlite3_bind_text(stmt, idx, rec->md5_hash, -1, NULL); 1650 if (rc != SQLITE_OK) { 1651 sqlite3_finalize(stmt); 1652 goto Out; 1653 } 1654 1655 idx = sqlite3_bind_parameter_index(stmt, ":machine"); 1656 if (rec->machine) 1657 rc = sqlite3_bind_text(stmt, idx, rec->machine, -1, NULL); 1658 else 1659 rc = sqlite3_bind_null(stmt, idx); 1660 if (rc != SQLITE_OK) { 1661 sqlite3_finalize(stmt); 1662 goto Out; 1663 } 1664 1665 rc = sqlite3_step(stmt); 1666 if (rc != SQLITE_DONE) { 1667 sqlite3_finalize(stmt); 1668 goto Out; 1669 } 1670 1671 sqlite3_finalize(stmt); 1672 1673 /* Get the row id of the last inserted row */ 1674 mandb_rowid = sqlite3_last_insert_rowid(db); 1675 1676 /*------------------------Populate the mandb_meta table-----------------------*/ 1677 sqlstr = "INSERT INTO mandb_meta VALUES (:device, :inode, :mtime," 1678 " :file, :md5_hash, :id)"; 1679 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1680 if (rc != SQLITE_OK) 1681 goto Out; 1682 1683 idx = sqlite3_bind_parameter_index(stmt, ":device"); 1684 rc = sqlite3_bind_int64(stmt, idx, rec->device); 1685 if (rc != SQLITE_OK) { 1686 sqlite3_finalize(stmt); 1687 goto Out; 1688 } 1689 1690 idx = sqlite3_bind_parameter_index(stmt, ":inode"); 1691 rc = sqlite3_bind_int64(stmt, idx, rec->inode); 1692 if (rc != SQLITE_OK) { 1693 sqlite3_finalize(stmt); 1694 goto Out; 1695 } 1696 1697 idx = sqlite3_bind_parameter_index(stmt, ":mtime"); 1698 rc = sqlite3_bind_int64(stmt, idx, rec->mtime); 1699 if (rc != SQLITE_OK) { 1700 sqlite3_finalize(stmt); 1701 goto Out; 1702 } 1703 1704 idx = sqlite3_bind_parameter_index(stmt, ":file"); 1705 rc = sqlite3_bind_text(stmt, idx, rec->file_path, -1, NULL); 1706 if (rc != SQLITE_OK) { 1707 sqlite3_finalize(stmt); 1708 goto Out; 1709 } 1710 1711 idx = sqlite3_bind_parameter_index(stmt, ":md5_hash"); 1712 rc = sqlite3_bind_text(stmt, idx, rec->md5_hash, -1, NULL); 1713 if (rc != SQLITE_OK) { 1714 sqlite3_finalize(stmt); 1715 goto Out; 1716 } 1717 1718 idx = sqlite3_bind_parameter_index(stmt, ":id"); 1719 rc = sqlite3_bind_int64(stmt, idx, mandb_rowid); 1720 if (rc != SQLITE_OK) { 1721 sqlite3_finalize(stmt); 1722 goto Out; 1723 } 1724 1725 rc = sqlite3_step(stmt); 1726 sqlite3_finalize(stmt); 1727 if (rc == SQLITE_CONSTRAINT_UNIQUE) { 1728 /* The *most* probable reason for reaching here is that 1729 * the UNIQUE contraint on the file column of the mandb_meta 1730 * table was violated. 1731 * This can happen when a file was updated/modified. 1732 * To fix this we need to do two things: 1733 * 1. Delete the row for the older version of this file 1734 * from mandb table. 1735 * 2. Run an UPDATE query to update the row for this file 1736 * in the mandb_meta table. 1737 */ 1738 warnx("Trying to update index for %s", rec->file_path); 1739 char *sql = sqlite3_mprintf("DELETE FROM mandb " 1740 "WHERE rowid = (SELECT id" 1741 " FROM mandb_meta" 1742 " WHERE file = %Q)", 1743 rec->file_path); 1744 sqlite3_exec(db, sql, NULL, NULL, &errmsg); 1745 sqlite3_free(sql); 1746 if (errmsg != NULL) { 1747 if (mflags.verbosity) 1748 warnx("%s", errmsg); 1749 free(errmsg); 1750 } 1751 sqlstr = "UPDATE mandb_meta SET device = :device," 1752 " inode = :inode, mtime = :mtime, id = :id," 1753 " md5_hash = :md5 WHERE file = :file"; 1754 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1755 if (rc != SQLITE_OK) { 1756 if (mflags.verbosity) 1757 warnx("Update failed with error: %s", 1758 sqlite3_errmsg(db)); 1759 close_db(db); 1760 cleanup(rec); 1761 errx(EXIT_FAILURE, 1762 "Consider running makemandb with -f option"); 1763 } 1764 1765 idx = sqlite3_bind_parameter_index(stmt, ":device"); 1766 sqlite3_bind_int64(stmt, idx, rec->device); 1767 idx = sqlite3_bind_parameter_index(stmt, ":inode"); 1768 sqlite3_bind_int64(stmt, idx, rec->inode); 1769 idx = sqlite3_bind_parameter_index(stmt, ":mtime"); 1770 sqlite3_bind_int64(stmt, idx, rec->mtime); 1771 idx = sqlite3_bind_parameter_index(stmt, ":id"); 1772 sqlite3_bind_int64(stmt, idx, mandb_rowid); 1773 idx = sqlite3_bind_parameter_index(stmt, ":md5"); 1774 sqlite3_bind_text(stmt, idx, rec->md5_hash, -1, NULL); 1775 idx = sqlite3_bind_parameter_index(stmt, ":file"); 1776 sqlite3_bind_text(stmt, idx, rec->file_path, -1, NULL); 1777 rc = sqlite3_step(stmt); 1778 sqlite3_finalize(stmt); 1779 1780 if (rc != SQLITE_DONE) { 1781 if (mflags.verbosity) 1782 warnx("%s", sqlite3_errmsg(db)); 1783 close_db(db); 1784 cleanup(rec); 1785 errx(EXIT_FAILURE, 1786 "Consider running makemandb with -f option"); 1787 } 1788 } else if (rc != SQLITE_DONE) { 1789 /* Otherwise make this error fatal */ 1790 warnx("Failed at %s\n%s", rec->file_path, sqlite3_errmsg(db)); 1791 cleanup(rec); 1792 close_db(db); 1793 exit(EXIT_FAILURE); 1794 } 1795 1796 /*------------------------ Populate the mandb_links table---------------------*/ 1797 char *str = NULL; 1798 char *links; 1799 if (rec->links && strlen(rec->links)) { 1800 links = rec->links; 1801 for(ln = strtok(links, " "); ln; ln = strtok(NULL, " ")) { 1802 if (ln[0] == ',') 1803 ln++; 1804 if(ln[strlen(ln) - 1] == ',') 1805 ln[strlen(ln) - 1] = 0; 1806 1807 str = sqlite3_mprintf("INSERT INTO mandb_links" 1808 " VALUES (%Q, %Q, %Q, %Q, %Q)", 1809 ln, rec->name, rec->section, 1810 rec->machine, rec->md5_hash); 1811 sqlite3_exec(db, str, NULL, NULL, &errmsg); 1812 sqlite3_free(str); 1813 if (errmsg != NULL) { 1814 warnx("%s", errmsg); 1815 cleanup(rec); 1816 free(errmsg); 1817 return -1; 1818 } 1819 } 1820 } 1821 1822 cleanup(rec); 1823 return 0; 1824 1825 Out: 1826 if (mflags.verbosity) 1827 warnx("%s", sqlite3_errmsg(db)); 1828 cleanup(rec); 1829 return -1; 1830 } 1831 1832 /* 1833 * check_md5-- 1834 * Generates the md5 hash of the file and checks if it already doesn't exist 1835 * in the table (passed as the 3rd parameter). 1836 * This function is being used to avoid hardlinks. 1837 * On successful completion it will also set the value of the fourth parameter 1838 * to the md5 hash of the file (computed previously). It is the responsibility 1839 * of the caller to free this buffer. 1840 * Return values: 1841 * -1: If an error occurs somewhere and sets the md5 return buffer to NULL. 1842 * 0: If the md5 hash does not exist in the table. 1843 * 1: If the hash exists in the database. 1844 */ 1845 static int 1846 check_md5(const char *file, sqlite3 *db, const char *table, char **md5sum, 1847 void *buf, size_t buflen) 1848 { 1849 int rc = 0; 1850 int idx = -1; 1851 char *sqlstr = NULL; 1852 sqlite3_stmt *stmt = NULL; 1853 1854 assert(file != NULL); 1855 *md5sum = MD5Data(buf, buflen, NULL); 1856 if (*md5sum == NULL) { 1857 if (mflags.verbosity) 1858 warn("md5 failed: %s", file); 1859 return -1; 1860 } 1861 1862 easprintf(&sqlstr, "SELECT * FROM %s WHERE md5_hash = :md5_hash", 1863 table); 1864 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1865 if (rc != SQLITE_OK) { 1866 free(sqlstr); 1867 free(*md5sum); 1868 *md5sum = NULL; 1869 return -1; 1870 } 1871 1872 idx = sqlite3_bind_parameter_index(stmt, ":md5_hash"); 1873 rc = sqlite3_bind_text(stmt, idx, *md5sum, -1, NULL); 1874 if (rc != SQLITE_OK) { 1875 if (mflags.verbosity) 1876 warnx("%s", sqlite3_errmsg(db)); 1877 sqlite3_finalize(stmt); 1878 free(sqlstr); 1879 free(*md5sum); 1880 *md5sum = NULL; 1881 return -1; 1882 } 1883 1884 if (sqlite3_step(stmt) == SQLITE_ROW) { 1885 sqlite3_finalize(stmt); 1886 free(sqlstr); 1887 return 0; 1888 } 1889 1890 sqlite3_finalize(stmt); 1891 free(sqlstr); 1892 return 1; 1893 } 1894 1895 /* Optimize the index for faster search */ 1896 static void 1897 optimize(sqlite3 *db) 1898 { 1899 const char *sqlstr; 1900 char *errmsg = NULL; 1901 1902 if (mflags.verbosity == 2) 1903 printf("Optimizing the database index\n"); 1904 sqlstr = "INSERT INTO mandb(mandb) VALUES (\'optimize\');" 1905 "VACUUM"; 1906 sqlite3_exec(db, sqlstr, NULL, NULL, &errmsg); 1907 if (errmsg != NULL) { 1908 if (mflags.verbosity) 1909 warnx("%s", errmsg); 1910 free(errmsg); 1911 return; 1912 } 1913 } 1914 1915 /* 1916 * cleanup -- 1917 * cleans up the global buffers 1918 */ 1919 static void 1920 cleanup(mandb_rec *rec) 1921 { 1922 rec->desc.offset = 0; 1923 rec->lib.offset = 0; 1924 rec->return_vals.offset = 0; 1925 rec->env.offset = 0; 1926 rec->exit_status.offset = 0; 1927 rec->diagnostics.offset = 0; 1928 rec->errors.offset = 0; 1929 rec->files.offset = 0; 1930 1931 free(rec->machine); 1932 rec->machine = NULL; 1933 1934 free(rec->links); 1935 rec->links = NULL; 1936 1937 free(rec->file_path); 1938 rec->file_path = NULL; 1939 1940 free(rec->name); 1941 rec->name = NULL; 1942 1943 free(rec->name_desc); 1944 rec->name_desc = NULL; 1945 1946 free(rec->md5_hash); 1947 rec->md5_hash = NULL; 1948 1949 free(rec->section); 1950 rec->section = NULL; 1951 } 1952 1953 /* 1954 * init_secbuffs-- 1955 * Sets the value of buflen for all the sec_buff field of rec. And then 1956 * allocate memory to each sec_buff member of rec. 1957 */ 1958 static void 1959 init_secbuffs(mandb_rec *rec) 1960 { 1961 /* 1962 * Some sec_buff might need more memory, for example desc, 1963 * which stores the data of the DESCRIPTION section, 1964 * while some might need very small amount of memory. 1965 * Therefore explicitly setting the value of buflen field for 1966 * each sec_buff. 1967 */ 1968 rec->desc.buflen = 10 * BUFLEN; 1969 rec->desc.data = emalloc(rec->desc.buflen); 1970 rec->desc.offset = 0; 1971 1972 rec->lib.buflen = BUFLEN / 2; 1973 rec->lib.data = emalloc(rec->lib.buflen); 1974 rec->lib.offset = 0; 1975 1976 rec->return_vals.buflen = BUFLEN; 1977 rec->return_vals.data = emalloc(rec->return_vals.buflen); 1978 rec->return_vals.offset = 0; 1979 1980 rec->exit_status.buflen = BUFLEN; 1981 rec->exit_status.data = emalloc(rec->exit_status.buflen); 1982 rec->exit_status.offset = 0; 1983 1984 rec->env.buflen = BUFLEN; 1985 rec->env.data = emalloc(rec->env.buflen); 1986 rec->env.offset = 0; 1987 1988 rec->files.buflen = BUFLEN; 1989 rec->files.data = emalloc(rec->files.buflen); 1990 rec->files.offset = 0; 1991 1992 rec->diagnostics.buflen = BUFLEN; 1993 rec->diagnostics.data = emalloc(rec->diagnostics.buflen); 1994 rec->diagnostics.offset = 0; 1995 1996 rec->errors.buflen = BUFLEN; 1997 rec->errors.data = emalloc(rec->errors.buflen); 1998 rec->errors.offset = 0; 1999 } 2000 2001 /* 2002 * free_secbuffs-- 2003 * This function should be called at the end, when all the pages have been 2004 * parsed. 2005 * It frees the memory allocated to sec_buffs by init_secbuffs in the starting. 2006 */ 2007 static void 2008 free_secbuffs(mandb_rec *rec) 2009 { 2010 free(rec->desc.data); 2011 free(rec->lib.data); 2012 free(rec->return_vals.data); 2013 free(rec->exit_status.data); 2014 free(rec->env.data); 2015 free(rec->files.data); 2016 free(rec->diagnostics.data); 2017 free(rec->errors.data); 2018 } 2019 2020 static void 2021 replace_hyph(char *str) 2022 { 2023 char *iter = str; 2024 while ((iter = strchr(iter, ASCII_HYPH)) != NULL) 2025 *iter = '-'; 2026 2027 iter = str; 2028 while ((iter = strchr(iter, ASCII_NBRSP)) != NULL) 2029 *iter = '-'; 2030 } 2031 2032 static char * 2033 parse_escape(const char *str) 2034 { 2035 const char *backslash, *last_backslash; 2036 char *result, *iter; 2037 size_t len; 2038 2039 assert(str); 2040 2041 last_backslash = str; 2042 backslash = strchr(str, '\\'); 2043 if (backslash == NULL) { 2044 result = estrdup(str); 2045 replace_hyph(result); 2046 return result; 2047 } 2048 2049 result = emalloc(strlen(str) + 1); 2050 iter = result; 2051 2052 do { 2053 len = backslash - last_backslash; 2054 memcpy(iter, last_backslash, len); 2055 iter += len; 2056 if (backslash[1] == '-' || backslash[1] == ' ') { 2057 *iter++ = backslash[1]; 2058 last_backslash = backslash + 2; 2059 backslash = strchr(last_backslash, '\\'); 2060 } else { 2061 ++backslash; 2062 mandoc_escape(&backslash, NULL, NULL); 2063 last_backslash = backslash; 2064 if (backslash == NULL) 2065 break; 2066 backslash = strchr(last_backslash, '\\'); 2067 } 2068 } while (backslash != NULL); 2069 if (last_backslash != NULL) 2070 strcpy(iter, last_backslash); 2071 2072 replace_hyph(result); 2073 return result; 2074 } 2075 2076 /* 2077 * append-- 2078 * Concatenates a space and src at the end of sbuff->data (much like concat in 2079 * apropos-utils.c). 2080 * Rather than reallocating space for writing data, it uses the value of the 2081 * offset field of sec_buff to write new data at the free space left in the 2082 * buffer. 2083 * In case the size of the data to be appended exceeds the number of bytes left 2084 * in the buffer, it reallocates buflen number of bytes and then continues. 2085 * Value of offset field should be adjusted as new data is written. 2086 * 2087 * NOTE: This function does not write the null byte at the end of the buffers, 2088 * write a null byte at the position pointed to by offset before inserting data 2089 * in the db. 2090 */ 2091 static void 2092 append(secbuff *sbuff, const char *src) 2093 { 2094 short flag = 0; 2095 size_t srclen, newlen; 2096 char *temp; 2097 2098 assert(src != NULL); 2099 temp = parse_escape(src); 2100 srclen = strlen(temp); 2101 2102 if (sbuff->data == NULL) { 2103 sbuff->data = emalloc(sbuff->buflen); 2104 sbuff->offset = 0; 2105 } 2106 2107 newlen = sbuff->offset + srclen + 2; 2108 if (newlen >= sbuff->buflen) { 2109 while (sbuff->buflen < newlen) 2110 sbuff->buflen += sbuff->buflen; 2111 sbuff->data = erealloc(sbuff->data, sbuff->buflen); 2112 flag = 1; 2113 } 2114 2115 /* Append a space at the end of the buffer. */ 2116 if (sbuff->offset || flag) 2117 sbuff->data[sbuff->offset++] = ' '; 2118 /* Now, copy src at the end of the buffer. */ 2119 memcpy(sbuff->data + sbuff->offset, temp, srclen); 2120 sbuff->offset += srclen; 2121 free(temp); 2122 } 2123 2124 static void 2125 usage(void) 2126 { 2127 fprintf(stderr, "Usage: %s [-floQqv] [-C path]\n", getprogname()); 2128 exit(1); 2129 } 2130
Indexes created Mon Sep 29 21:09:56 GMT 2025