makemandb.c revision 1.45
1 /* $NetBSD: makemandb.c,v 1.45 2016/12/17 17:04:38 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 1.45 2016/12/17 17:04:38 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 1000 } 1001 1002 /* 1003 * pmdoc_macro_handler-- 1004 * This function is a single point of handling all the special macros that we 1005 * want to handle especially. For example the .Xr macro for properly parsing 1006 * the referenced page name along with the section number, or the .Pp macro 1007 * for adding a new line whenever we encounter it. 1008 */ 1009 static void 1010 pmdoc_macro_handler(const struct roff_node *n, mandb_rec *rec, int doct) 1011 { 1012 const struct roff_node *sn; 1013 assert(n); 1014 1015 switch (doct) { 1016 /* Parse the man page references. 1017 * Basically the .Xr macros are used like: 1018 * .Xr ls 1 1019 * and formatted like this: 1020 * ls(1) 1021 * Prepare a buffer to format the data like the above example and call 1022 * pmdoc_parse_section to append it. 1023 */ 1024 case MDOC_Xr: 1025 n = n->child; 1026 while (n->type != ROFFT_TEXT && n->next) 1027 n = n->next; 1028 1029 if (n && n->type != ROFFT_TEXT) 1030 return; 1031 sn = n; 1032 if (n->next) 1033 n = n->next; 1034 1035 while (n->type != ROFFT_TEXT && n->next) 1036 n = n->next; 1037 1038 if (n && n->type == ROFFT_TEXT) { 1039 char *buf; 1040 easprintf(&buf, "%s(%s)", sn->string, n->string); 1041 mdoc_parse_section(n->sec, buf, rec); 1042 free(buf); 1043 } 1044 1045 break; 1046 1047 /* Parse the .Pp macro to add a new line */ 1048 case MDOC_Pp: 1049 if (n->type == ROFFT_TEXT) 1050 mdoc_parse_section(n->sec, "\n", rec); 1051 break; 1052 default: 1053 break; 1054 } 1055 1056 } 1057 1058 /* 1059 * pmdoc_Xr, pmdoc_Pp-- 1060 * Empty stubs. 1061 * The parser calls these functions each time it encounters 1062 * a .Xr or .Pp macro. We are parsing all the data from 1063 * the pmdoc_Sh function, so don't do anything here. 1064 * (See if else blocks in pmdoc_Sh.) 1065 */ 1066 static void 1067 pmdoc_Xr(const struct roff_node *n, mandb_rec *rec) 1068 { 1069 } 1070 1071 static void 1072 pmdoc_Pp(const struct roff_node *n, mandb_rec *rec) 1073 { 1074 } 1075 1076 /* 1077 * pmdoc_Sh -- 1078 * Called when a .Sh macro is encountered and tries to parse its body 1079 */ 1080 static void 1081 pmdoc_Sh(const struct roff_node *n, mandb_rec *rec) 1082 { 1083 if (n == NULL) 1084 return; 1085 1086 switch (n->sec) { 1087 case SEC_NAME: 1088 case SEC_SYNOPSIS: 1089 case SEC_EXAMPLES: 1090 case SEC_STANDARDS: 1091 case SEC_HISTORY: 1092 case SEC_AUTHORS: 1093 case SEC_BUGS: 1094 /* 1095 * We don't care about text from these sections 1096 */ 1097 return; 1098 default: 1099 break; 1100 } 1101 1102 if (n->type == ROFFT_BLOCK) 1103 mdoc_parse_Sh(n->body, rec); 1104 } 1105 1106 /* 1107 * Called from pmdoc_Sh to parse body of a .Sh macro. It calls 1108 * mdoc_parse_section to append the data to the section specific buffer. 1109 * Two special macros which may occur inside the body of Sh are .Nm and .Xr and 1110 * they need special handling, thus the separate if branches for them. 1111 */ 1112 static void 1113 mdoc_parse_Sh(const struct roff_node *n, mandb_rec *rec) 1114 { 1115 if (n == NULL || (n->type != ROFFT_TEXT && n->tok == MDOC_MAX)) 1116 return; 1117 int xr_found = 0; 1118 1119 if (n->type == ROFFT_TEXT) { 1120 mdoc_parse_section(n->sec, n->string, rec); 1121 } else if (mdocs[n->tok] == pmdoc_Nm && rec->name != NULL) { 1122 /* 1123 * When encountering a .Nm macro, substitute it 1124 * with its previously cached value of the argument. 1125 */ 1126 mdoc_parse_section(n->sec, rec->name, rec); 1127 } else if (mdocs[n->tok] == pmdoc_Xr) { 1128 /* 1129 * When encountering other inline macros, 1130 * call pmdoc_macro_handler. 1131 */ 1132 pmdoc_macro_handler(n, rec, MDOC_Xr); 1133 xr_found = 1; 1134 } else if (mdocs[n->tok] == pmdoc_Pp) { 1135 pmdoc_macro_handler(n, rec, MDOC_Pp); 1136 } 1137 1138 /* 1139 * If an Xr macro was encountered then the child node has 1140 * already been explored by pmdoc_macro_handler. 1141 */ 1142 if (xr_found == 0) 1143 mdoc_parse_Sh(n->child, rec); 1144 mdoc_parse_Sh(n->next, rec); 1145 } 1146 1147 /* 1148 * mdoc_parse_section-- 1149 * Utility function for parsing sections of the mdoc type pages. 1150 * Takes two params: 1151 * 1. sec is an enum which indicates the section in which we are present 1152 * 2. string is the string which we need to append to the secbuff for this 1153 * particular section. 1154 * The function appends string to the global section buffer and returns. 1155 */ 1156 static void 1157 mdoc_parse_section(enum roff_sec sec, const char *string, mandb_rec *rec) 1158 { 1159 /* 1160 * If the user specified the 'l' flag, then parse and store only the 1161 * NAME section. Ignore the rest. 1162 */ 1163 if (mflags.limit) 1164 return; 1165 1166 switch (sec) { 1167 case SEC_LIBRARY: 1168 append(&rec->lib, string); 1169 break; 1170 case SEC_RETURN_VALUES: 1171 append(&rec->return_vals, string); 1172 break; 1173 case SEC_ENVIRONMENT: 1174 append(&rec->env, string); 1175 break; 1176 case SEC_FILES: 1177 append(&rec->files, string); 1178 break; 1179 case SEC_EXIT_STATUS: 1180 append(&rec->exit_status, string); 1181 break; 1182 case SEC_DIAGNOSTICS: 1183 append(&rec->diagnostics, string); 1184 break; 1185 case SEC_ERRORS: 1186 append(&rec->errors, string); 1187 break; 1188 default: 1189 append(&rec->desc, string); 1190 break; 1191 } 1192 } 1193 1194 static void 1195 proff_node(const struct roff_node *n, mandb_rec *rec, const proff_nf *func) 1196 { 1197 if (n == NULL) 1198 return; 1199 1200 switch (n->type) { 1201 case (ROFFT_BODY): 1202 /* FALLTHROUGH */ 1203 case (ROFFT_BLOCK): 1204 /* FALLTHROUGH */ 1205 case (ROFFT_ELEM): 1206 if (func[n->tok] != NULL) 1207 (*func[n->tok])(n, rec); 1208 break; 1209 default: 1210 break; 1211 } 1212 1213 proff_node(n->child, rec, func); 1214 proff_node(n->next, rec, func); 1215 } 1216 1217 /* 1218 * pman_parse_name -- 1219 * Parses the NAME section and puts the complete content in the name_desc 1220 * variable. 1221 */ 1222 static void 1223 pman_parse_name(const struct roff_node *n, mandb_rec *rec) 1224 { 1225 if (n == NULL) 1226 return; 1227 1228 if (n->type == ROFFT_TEXT) { 1229 char *tmp = parse_escape(n->string); 1230 concat(&rec->name_desc, tmp); 1231 free(tmp); 1232 } 1233 1234 if (n->child) 1235 pman_parse_name(n->child, rec); 1236 1237 if(n->next) 1238 pman_parse_name(n->next, rec); 1239 } 1240 1241 /* 1242 * A stub function to be able to parse the macros like .B embedded inside 1243 * a section. 1244 */ 1245 static void 1246 pman_block(const struct roff_node *n, mandb_rec *rec) 1247 { 1248 } 1249 1250 /* 1251 * pman_sh -- 1252 * This function does one of the two things: 1253 * 1. If the present section is NAME, then it will: 1254 * (a) Extract the name of the page (in case of multiple comma separated 1255 * names, it will pick up the first one). 1256 * (b) Build a space spearated list of all the symlinks/hardlinks to 1257 * this page and store in the buffer 'links'. These are extracted from 1258 * the comma separated list of names in the NAME section as well. 1259 * (c) Move on to the one line description section, which is after the list 1260 * of names in the NAME section. 1261 * 2. Otherwise, it will check the section name and call the man_parse_section 1262 * function, passing the enum corresponding to that section. 1263 */ 1264 static void 1265 pman_sh(const struct roff_node *n, mandb_rec *rec) 1266 { 1267 static const struct { 1268 enum man_sec section; 1269 const char *header; 1270 } mapping[] = { 1271 { MANSEC_DESCRIPTION, "DESCRIPTION" }, 1272 { MANSEC_SYNOPSIS, "SYNOPSIS" }, 1273 { MANSEC_LIBRARY, "LIBRARY" }, 1274 { MANSEC_ERRORS, "ERRORS" }, 1275 { MANSEC_FILES, "FILES" }, 1276 { MANSEC_RETURN_VALUES, "RETURN VALUE" }, 1277 { MANSEC_RETURN_VALUES, "RETURN VALUES" }, 1278 { MANSEC_EXIT_STATUS, "EXIT STATUS" }, 1279 { MANSEC_EXAMPLES, "EXAMPLES" }, 1280 { MANSEC_EXAMPLES, "EXAMPLE" }, 1281 { MANSEC_STANDARDS, "STANDARDS" }, 1282 { MANSEC_HISTORY, "HISTORY" }, 1283 { MANSEC_BUGS, "BUGS" }, 1284 { MANSEC_AUTHORS, "AUTHORS" }, 1285 { MANSEC_COPYRIGHT, "COPYRIGHT" }, 1286 }; 1287 const struct roff_node *head; 1288 char *name_desc; 1289 size_t sz; 1290 size_t i; 1291 1292 if ((head = n->parent->head) == NULL || (head = head->child) == NULL || 1293 head->type != ROFFT_TEXT) 1294 return; 1295 1296 /* 1297 * Check if this section should be extracted and 1298 * where it should be stored. Handled the trival cases first. 1299 */ 1300 for (i = 0; i < sizeof(mapping) / sizeof(mapping[0]); ++i) { 1301 if (strcmp(head->string, mapping[i].header) == 0) { 1302 man_parse_section(mapping[i].section, n, rec); 1303 return; 1304 } 1305 } 1306 1307 if (strcmp(head->string, "NAME") == 0) { 1308 /* 1309 * We are in the NAME section. 1310 * pman_parse_name will put the complete content in name_desc. 1311 */ 1312 pman_parse_name(n, rec); 1313 1314 name_desc = rec->name_desc; 1315 if (name_desc == NULL) 1316 return; 1317 1318 /* Remove any leading spaces. */ 1319 while (name_desc[0] == ' ') 1320 name_desc++; 1321 1322 /* If the line begins with a "\&", avoid those */ 1323 if (name_desc[0] == '\\' && name_desc[1] == '&') 1324 name_desc += 2; 1325 1326 /* Now name_desc should be left with a comma-space 1327 * separated list of names and the one line description 1328 * of the page: 1329 * "a, b, c \- sample description" 1330 * Take out the first name, before the first comma 1331 * (or space) and store it in rec->name. 1332 * If the page has aliases then they should be 1333 * in the form of a comma separated list. 1334 * Keep looping while there is a comma in name_desc, 1335 * extract the alias name and store in rec->links. 1336 * When there are no more commas left, break out. 1337 */ 1338 int has_alias = 0; // Any more aliases left? 1339 while (*name_desc) { 1340 /* Remove any leading spaces or hyphens. */ 1341 if (name_desc[0] == ' ' || name_desc[0] == '-') { 1342 name_desc++; 1343 continue; 1344 } 1345 sz = strcspn(name_desc, ", "); 1346 1347 /* Extract the first term and store it in rec->name. */ 1348 if (rec->name == NULL) { 1349 if (name_desc[sz] == ',') 1350 has_alias = 1; 1351 rec->name = estrndup(name_desc, sz); 1352 /* XXX This would only happen with a poorly 1353 * written man page, maybe warn? */ 1354 if (name_desc[sz] == '\0') 1355 break; 1356 name_desc += sz + 1; 1357 continue; 1358 } 1359 1360 /* 1361 * Once rec->name is set, rest of the names 1362 * are to be treated as links or aliases. 1363 */ 1364 if (rec->name && has_alias) { 1365 if (name_desc[sz] != ',') { 1366 /* No more commas left --> no more 1367 * aliases to take out */ 1368 has_alias = 0; 1369 } 1370 concat2(&rec->links, name_desc, sz); 1371 /* XXX This would only happen with a poorly 1372 * written man page, maybe warn? */ 1373 if (name_desc[sz] == '\0') 1374 break; 1375 name_desc += sz + 1; 1376 continue; 1377 } 1378 break; 1379 } 1380 1381 /* Parse any escape sequences that might be there */ 1382 char *temp = parse_escape(name_desc); 1383 free(rec->name_desc); 1384 rec->name_desc = temp; 1385 temp = parse_escape(rec->name); 1386 free(rec->name); 1387 rec->name = temp; 1388 return; 1389 } 1390 1391 /* The RETURN VALUE section might be specified in multiple ways */ 1392 if (strcmp(head->string, "RETURN") == 0 && 1393 head->next != NULL && head->next->type == ROFFT_TEXT && 1394 (strcmp(head->next->string, "VALUE") == 0 || 1395 strcmp(head->next->string, "VALUES") == 0)) { 1396 man_parse_section(MANSEC_RETURN_VALUES, n, rec); 1397 return; 1398 } 1399 1400 /* 1401 * EXIT STATUS section can also be specified all on one line or on two 1402 * separate lines. 1403 */ 1404 if (strcmp(head->string, "EXIT") == 0 && 1405 head->next != NULL && head->next->type == ROFFT_TEXT && 1406 strcmp(head->next->string, "STATUS") == 0) { 1407 man_parse_section(MANSEC_EXIT_STATUS, n, rec); 1408 return; 1409 } 1410 1411 /* Store the rest of the content in desc. */ 1412 man_parse_section(MANSEC_NONE, n, rec); 1413 } 1414 1415 /* 1416 * pman_parse_node -- 1417 * Generic function to iterate through a node. Usually called from 1418 * man_parse_section to parse a particular section of the man page. 1419 */ 1420 static void 1421 pman_parse_node(const struct roff_node *n, secbuff *s) 1422 { 1423 if (n == NULL) 1424 return; 1425 1426 if (n->type == ROFFT_TEXT) 1427 append(s, n->string); 1428 1429 pman_parse_node(n->child, s); 1430 pman_parse_node(n->next, s); 1431 } 1432 1433 /* 1434 * man_parse_section -- 1435 * Takes two parameters: 1436 * sec: Tells which section we are present in 1437 * n: Is the present node of the AST. 1438 * Depending on the section, we call pman_parse_node to parse that section and 1439 * concatenate the content from that section into the buffer for that section. 1440 */ 1441 static void 1442 man_parse_section(enum man_sec sec, const struct roff_node *n, mandb_rec *rec) 1443 { 1444 /* 1445 * If the user sepecified the 'l' flag then just parse 1446 * the NAME section, ignore the rest. 1447 */ 1448 if (mflags.limit) 1449 return; 1450 1451 switch (sec) { 1452 case MANSEC_LIBRARY: 1453 pman_parse_node(n, &rec->lib); 1454 break; 1455 case MANSEC_RETURN_VALUES: 1456 pman_parse_node(n, &rec->return_vals); 1457 break; 1458 case MANSEC_ENVIRONMENT: 1459 pman_parse_node(n, &rec->env); 1460 break; 1461 case MANSEC_FILES: 1462 pman_parse_node(n, &rec->files); 1463 break; 1464 case MANSEC_EXIT_STATUS: 1465 pman_parse_node(n, &rec->exit_status); 1466 break; 1467 case MANSEC_DIAGNOSTICS: 1468 pman_parse_node(n, &rec->diagnostics); 1469 break; 1470 case MANSEC_ERRORS: 1471 pman_parse_node(n, &rec->errors); 1472 break; 1473 case MANSEC_NAME: 1474 case MANSEC_SYNOPSIS: 1475 case MANSEC_EXAMPLES: 1476 case MANSEC_STANDARDS: 1477 case MANSEC_HISTORY: 1478 case MANSEC_BUGS: 1479 case MANSEC_AUTHORS: 1480 case MANSEC_COPYRIGHT: 1481 break; 1482 default: 1483 pman_parse_node(n, &rec->desc); 1484 break; 1485 } 1486 1487 } 1488 1489 /* 1490 * insert_into_db -- 1491 * Inserts the parsed data of the man page in the Sqlite databse. 1492 * If any of the values is NULL, then we cleanup and return -1 indicating 1493 * an error. 1494 * Otherwise, store the data in the database and return 0. 1495 */ 1496 static int 1497 insert_into_db(sqlite3 *db, mandb_rec *rec) 1498 { 1499 int rc = 0; 1500 int idx = -1; 1501 const char *sqlstr = NULL; 1502 sqlite3_stmt *stmt = NULL; 1503 char *ln = NULL; 1504 char *errmsg = NULL; 1505 long int mandb_rowid; 1506 1507 /* 1508 * At the very minimum we want to make sure that we store 1509 * the following data: 1510 * Name, one line description, and the MD5 hash 1511 */ 1512 if (rec->name == NULL || rec->name_desc == NULL || 1513 rec->md5_hash == NULL) { 1514 cleanup(rec); 1515 return -1; 1516 } 1517 1518 /* Write null byte at the end of all the sec_buffs */ 1519 rec->desc.data[rec->desc.offset] = 0; 1520 rec->lib.data[rec->lib.offset] = 0; 1521 rec->env.data[rec->env.offset] = 0; 1522 rec->return_vals.data[rec->return_vals.offset] = 0; 1523 rec->exit_status.data[rec->exit_status.offset] = 0; 1524 rec->files.data[rec->files.offset] = 0; 1525 rec->diagnostics.data[rec->diagnostics.offset] = 0; 1526 rec->errors.data[rec->errors.offset] = 0; 1527 1528 /* 1529 * In case of a mdoc page: (sorry, no better place to put this code) 1530 * parse the comma separated list of names of man pages, 1531 * the first name will be stored in the mandb table, rest will be 1532 * treated as links and put in the mandb_links table. 1533 */ 1534 if (rec->page_type == MDOC) { 1535 char *tmp; 1536 rec->links = estrdup(rec->name); 1537 free(rec->name); 1538 size_t sz = strcspn(rec->links, " \0"); 1539 rec->name = emalloc(sz + 1); 1540 memcpy(rec->name, rec->links, sz); 1541 if(rec->name[sz - 1] == ',') 1542 rec->name[sz - 1] = 0; 1543 else 1544 rec->name[sz] = 0; 1545 while (rec->links[sz] == ' ') 1546 ++sz; 1547 tmp = estrdup(rec->links + sz); 1548 free(rec->links); 1549 rec->links = tmp; 1550 } 1551 1552 /*------------------------ Populate the mandb table---------------------------*/ 1553 sqlstr = "INSERT INTO mandb VALUES (:section, :name, :name_desc, :desc," 1554 " :lib, :return_vals, :env, :files, :exit_status," 1555 " :diagnostics, :errors, :md5_hash, :machine)"; 1556 1557 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1558 if (rc != SQLITE_OK) 1559 goto Out; 1560 1561 idx = sqlite3_bind_parameter_index(stmt, ":name"); 1562 rc = sqlite3_bind_text(stmt, idx, rec->name, -1, NULL); 1563 if (rc != SQLITE_OK) { 1564 sqlite3_finalize(stmt); 1565 goto Out; 1566 } 1567 1568 idx = sqlite3_bind_parameter_index(stmt, ":section"); 1569 rc = sqlite3_bind_text(stmt, idx, rec->section, -1, NULL); 1570 if (rc != SQLITE_OK) { 1571 sqlite3_finalize(stmt); 1572 goto Out; 1573 } 1574 1575 idx = sqlite3_bind_parameter_index(stmt, ":name_desc"); 1576 rc = sqlite3_bind_text(stmt, idx, rec->name_desc, -1, NULL); 1577 if (rc != SQLITE_OK) { 1578 sqlite3_finalize(stmt); 1579 goto Out; 1580 } 1581 1582 idx = sqlite3_bind_parameter_index(stmt, ":desc"); 1583 rc = sqlite3_bind_text(stmt, idx, rec->desc.data, 1584 rec->desc.offset + 1, NULL); 1585 if (rc != SQLITE_OK) { 1586 sqlite3_finalize(stmt); 1587 goto Out; 1588 } 1589 1590 idx = sqlite3_bind_parameter_index(stmt, ":lib"); 1591 rc = sqlite3_bind_text(stmt, idx, rec->lib.data, 1592 rec->lib.offset + 1, NULL); 1593 if (rc != SQLITE_OK) { 1594 sqlite3_finalize(stmt); 1595 goto Out; 1596 } 1597 1598 idx = sqlite3_bind_parameter_index(stmt, ":return_vals"); 1599 rc = sqlite3_bind_text(stmt, idx, rec->return_vals.data, 1600 rec->return_vals.offset + 1, NULL); 1601 if (rc != SQLITE_OK) { 1602 sqlite3_finalize(stmt); 1603 goto Out; 1604 } 1605 1606 idx = sqlite3_bind_parameter_index(stmt, ":env"); 1607 rc = sqlite3_bind_text(stmt, idx, rec->env.data, 1608 rec->env.offset + 1, NULL); 1609 if (rc != SQLITE_OK) { 1610 sqlite3_finalize(stmt); 1611 goto Out; 1612 } 1613 1614 idx = sqlite3_bind_parameter_index(stmt, ":files"); 1615 rc = sqlite3_bind_text(stmt, idx, rec->files.data, 1616 rec->files.offset + 1, NULL); 1617 if (rc != SQLITE_OK) { 1618 sqlite3_finalize(stmt); 1619 goto Out; 1620 } 1621 1622 idx = sqlite3_bind_parameter_index(stmt, ":exit_status"); 1623 rc = sqlite3_bind_text(stmt, idx, rec->exit_status.data, 1624 rec->exit_status.offset + 1, NULL); 1625 if (rc != SQLITE_OK) { 1626 sqlite3_finalize(stmt); 1627 goto Out; 1628 } 1629 1630 idx = sqlite3_bind_parameter_index(stmt, ":diagnostics"); 1631 rc = sqlite3_bind_text(stmt, idx, rec->diagnostics.data, 1632 rec->diagnostics.offset + 1, NULL); 1633 if (rc != SQLITE_OK) { 1634 sqlite3_finalize(stmt); 1635 goto Out; 1636 } 1637 1638 idx = sqlite3_bind_parameter_index(stmt, ":errors"); 1639 rc = sqlite3_bind_text(stmt, idx, rec->errors.data, 1640 rec->errors.offset + 1, NULL); 1641 if (rc != SQLITE_OK) { 1642 sqlite3_finalize(stmt); 1643 goto Out; 1644 } 1645 1646 idx = sqlite3_bind_parameter_index(stmt, ":md5_hash"); 1647 rc = sqlite3_bind_text(stmt, idx, rec->md5_hash, -1, NULL); 1648 if (rc != SQLITE_OK) { 1649 sqlite3_finalize(stmt); 1650 goto Out; 1651 } 1652 1653 idx = sqlite3_bind_parameter_index(stmt, ":machine"); 1654 if (rec->machine) 1655 rc = sqlite3_bind_text(stmt, idx, rec->machine, -1, NULL); 1656 else 1657 rc = sqlite3_bind_null(stmt, idx); 1658 if (rc != SQLITE_OK) { 1659 sqlite3_finalize(stmt); 1660 goto Out; 1661 } 1662 1663 rc = sqlite3_step(stmt); 1664 if (rc != SQLITE_DONE) { 1665 sqlite3_finalize(stmt); 1666 goto Out; 1667 } 1668 1669 sqlite3_finalize(stmt); 1670 1671 /* Get the row id of the last inserted row */ 1672 mandb_rowid = sqlite3_last_insert_rowid(db); 1673 1674 /*------------------------Populate the mandb_meta table-----------------------*/ 1675 sqlstr = "INSERT INTO mandb_meta VALUES (:device, :inode, :mtime," 1676 " :file, :md5_hash, :id)"; 1677 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1678 if (rc != SQLITE_OK) 1679 goto Out; 1680 1681 idx = sqlite3_bind_parameter_index(stmt, ":device"); 1682 rc = sqlite3_bind_int64(stmt, idx, rec->device); 1683 if (rc != SQLITE_OK) { 1684 sqlite3_finalize(stmt); 1685 goto Out; 1686 } 1687 1688 idx = sqlite3_bind_parameter_index(stmt, ":inode"); 1689 rc = sqlite3_bind_int64(stmt, idx, rec->inode); 1690 if (rc != SQLITE_OK) { 1691 sqlite3_finalize(stmt); 1692 goto Out; 1693 } 1694 1695 idx = sqlite3_bind_parameter_index(stmt, ":mtime"); 1696 rc = sqlite3_bind_int64(stmt, idx, rec->mtime); 1697 if (rc != SQLITE_OK) { 1698 sqlite3_finalize(stmt); 1699 goto Out; 1700 } 1701 1702 idx = sqlite3_bind_parameter_index(stmt, ":file"); 1703 rc = sqlite3_bind_text(stmt, idx, rec->file_path, -1, NULL); 1704 if (rc != SQLITE_OK) { 1705 sqlite3_finalize(stmt); 1706 goto Out; 1707 } 1708 1709 idx = sqlite3_bind_parameter_index(stmt, ":md5_hash"); 1710 rc = sqlite3_bind_text(stmt, idx, rec->md5_hash, -1, NULL); 1711 if (rc != SQLITE_OK) { 1712 sqlite3_finalize(stmt); 1713 goto Out; 1714 } 1715 1716 idx = sqlite3_bind_parameter_index(stmt, ":id"); 1717 rc = sqlite3_bind_int64(stmt, idx, mandb_rowid); 1718 if (rc != SQLITE_OK) { 1719 sqlite3_finalize(stmt); 1720 goto Out; 1721 } 1722 1723 rc = sqlite3_step(stmt); 1724 sqlite3_finalize(stmt); 1725 if (rc == SQLITE_CONSTRAINT_UNIQUE) { 1726 /* The *most* probable reason for reaching here is that 1727 * the UNIQUE contraint on the file column of the mandb_meta 1728 * table was violated. 1729 * This can happen when a file was updated/modified. 1730 * To fix this we need to do two things: 1731 * 1. Delete the row for the older version of this file 1732 * from mandb table. 1733 * 2. Run an UPDATE query to update the row for this file 1734 * in the mandb_meta table. 1735 */ 1736 warnx("Trying to update index for %s", rec->file_path); 1737 char *sql = sqlite3_mprintf("DELETE FROM mandb " 1738 "WHERE rowid = (SELECT id" 1739 " FROM mandb_meta" 1740 " WHERE file = %Q)", 1741 rec->file_path); 1742 sqlite3_exec(db, sql, NULL, NULL, &errmsg); 1743 sqlite3_free(sql); 1744 if (errmsg != NULL) { 1745 if (mflags.verbosity) 1746 warnx("%s", errmsg); 1747 free(errmsg); 1748 } 1749 sqlstr = "UPDATE mandb_meta SET device = :device," 1750 " inode = :inode, mtime = :mtime, id = :id," 1751 " md5_hash = :md5 WHERE file = :file"; 1752 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1753 if (rc != SQLITE_OK) { 1754 if (mflags.verbosity) 1755 warnx("Update failed with error: %s", 1756 sqlite3_errmsg(db)); 1757 close_db(db); 1758 cleanup(rec); 1759 errx(EXIT_FAILURE, 1760 "Consider running makemandb with -f option"); 1761 } 1762 1763 idx = sqlite3_bind_parameter_index(stmt, ":device"); 1764 sqlite3_bind_int64(stmt, idx, rec->device); 1765 idx = sqlite3_bind_parameter_index(stmt, ":inode"); 1766 sqlite3_bind_int64(stmt, idx, rec->inode); 1767 idx = sqlite3_bind_parameter_index(stmt, ":mtime"); 1768 sqlite3_bind_int64(stmt, idx, rec->mtime); 1769 idx = sqlite3_bind_parameter_index(stmt, ":id"); 1770 sqlite3_bind_int64(stmt, idx, mandb_rowid); 1771 idx = sqlite3_bind_parameter_index(stmt, ":md5"); 1772 sqlite3_bind_text(stmt, idx, rec->md5_hash, -1, NULL); 1773 idx = sqlite3_bind_parameter_index(stmt, ":file"); 1774 sqlite3_bind_text(stmt, idx, rec->file_path, -1, NULL); 1775 rc = sqlite3_step(stmt); 1776 sqlite3_finalize(stmt); 1777 1778 if (rc != SQLITE_DONE) { 1779 if (mflags.verbosity) 1780 warnx("%s", sqlite3_errmsg(db)); 1781 close_db(db); 1782 cleanup(rec); 1783 errx(EXIT_FAILURE, 1784 "Consider running makemandb with -f option"); 1785 } 1786 } else if (rc != SQLITE_DONE) { 1787 /* Otherwise make this error fatal */ 1788 warnx("Failed at %s\n%s", rec->file_path, sqlite3_errmsg(db)); 1789 cleanup(rec); 1790 close_db(db); 1791 exit(EXIT_FAILURE); 1792 } 1793 1794 /*------------------------ Populate the mandb_links table---------------------*/ 1795 char *str = NULL; 1796 char *links; 1797 if (rec->links && strlen(rec->links)) { 1798 links = rec->links; 1799 for(ln = strtok(links, " "); ln; ln = strtok(NULL, " ")) { 1800 if (ln[0] == ',') 1801 ln++; 1802 if(ln[strlen(ln) - 1] == ',') 1803 ln[strlen(ln) - 1] = 0; 1804 1805 str = sqlite3_mprintf("INSERT INTO mandb_links" 1806 " VALUES (%Q, %Q, %Q, %Q, %Q)", 1807 ln, rec->name, rec->section, 1808 rec->machine, rec->md5_hash); 1809 sqlite3_exec(db, str, NULL, NULL, &errmsg); 1810 sqlite3_free(str); 1811 if (errmsg != NULL) { 1812 warnx("%s", errmsg); 1813 cleanup(rec); 1814 free(errmsg); 1815 return -1; 1816 } 1817 } 1818 } 1819 1820 cleanup(rec); 1821 return 0; 1822 1823 Out: 1824 if (mflags.verbosity) 1825 warnx("%s", sqlite3_errmsg(db)); 1826 cleanup(rec); 1827 return -1; 1828 } 1829 1830 /* 1831 * check_md5-- 1832 * Generates the md5 hash of the file and checks if it already doesn't exist 1833 * in the table (passed as the 3rd parameter). 1834 * This function is being used to avoid hardlinks. 1835 * On successful completion it will also set the value of the fourth parameter 1836 * to the md5 hash of the file (computed previously). It is the responsibility 1837 * of the caller to free this buffer. 1838 * Return values: 1839 * -1: If an error occurs somewhere and sets the md5 return buffer to NULL. 1840 * 0: If the md5 hash does not exist in the table. 1841 * 1: If the hash exists in the database. 1842 */ 1843 static int 1844 check_md5(const char *file, sqlite3 *db, const char *table, char **md5sum, 1845 void *buf, size_t buflen) 1846 { 1847 int rc = 0; 1848 int idx = -1; 1849 char *sqlstr = NULL; 1850 sqlite3_stmt *stmt = NULL; 1851 1852 assert(file != NULL); 1853 *md5sum = MD5Data(buf, buflen, NULL); 1854 if (*md5sum == NULL) { 1855 if (mflags.verbosity) 1856 warn("md5 failed: %s", file); 1857 return -1; 1858 } 1859 1860 easprintf(&sqlstr, "SELECT * FROM %s WHERE md5_hash = :md5_hash", 1861 table); 1862 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1863 if (rc != SQLITE_OK) { 1864 free(sqlstr); 1865 free(*md5sum); 1866 *md5sum = NULL; 1867 return -1; 1868 } 1869 1870 idx = sqlite3_bind_parameter_index(stmt, ":md5_hash"); 1871 rc = sqlite3_bind_text(stmt, idx, *md5sum, -1, NULL); 1872 if (rc != SQLITE_OK) { 1873 if (mflags.verbosity) 1874 warnx("%s", sqlite3_errmsg(db)); 1875 sqlite3_finalize(stmt); 1876 free(sqlstr); 1877 free(*md5sum); 1878 *md5sum = NULL; 1879 return -1; 1880 } 1881 1882 if (sqlite3_step(stmt) == SQLITE_ROW) { 1883 sqlite3_finalize(stmt); 1884 free(sqlstr); 1885 return 0; 1886 } 1887 1888 sqlite3_finalize(stmt); 1889 free(sqlstr); 1890 return 1; 1891 } 1892 1893 /* Optimize the index for faster search */ 1894 static void 1895 optimize(sqlite3 *db) 1896 { 1897 const char *sqlstr; 1898 char *errmsg = NULL; 1899 1900 if (mflags.verbosity == 2) 1901 printf("Optimizing the database index\n"); 1902 sqlstr = "INSERT INTO mandb(mandb) VALUES (\'optimize\');" 1903 "VACUUM"; 1904 sqlite3_exec(db, sqlstr, NULL, NULL, &errmsg); 1905 if (errmsg != NULL) { 1906 if (mflags.verbosity) 1907 warnx("%s", errmsg); 1908 free(errmsg); 1909 return; 1910 } 1911 } 1912 1913 /* 1914 * cleanup -- 1915 * cleans up the global buffers 1916 */ 1917 static void 1918 cleanup(mandb_rec *rec) 1919 { 1920 rec->desc.offset = 0; 1921 rec->lib.offset = 0; 1922 rec->return_vals.offset = 0; 1923 rec->env.offset = 0; 1924 rec->exit_status.offset = 0; 1925 rec->diagnostics.offset = 0; 1926 rec->errors.offset = 0; 1927 rec->files.offset = 0; 1928 1929 free(rec->machine); 1930 rec->machine = NULL; 1931 1932 free(rec->links); 1933 rec->links = NULL; 1934 1935 free(rec->file_path); 1936 rec->file_path = NULL; 1937 1938 free(rec->name); 1939 rec->name = NULL; 1940 1941 free(rec->name_desc); 1942 rec->name_desc = NULL; 1943 1944 free(rec->md5_hash); 1945 rec->md5_hash = NULL; 1946 1947 free(rec->section); 1948 rec->section = NULL; 1949 } 1950 1951 /* 1952 * init_secbuffs-- 1953 * Sets the value of buflen for all the sec_buff field of rec. And then 1954 * allocate memory to each sec_buff member of rec. 1955 */ 1956 static void 1957 init_secbuffs(mandb_rec *rec) 1958 { 1959 /* 1960 * Some sec_buff might need more memory, for example desc, 1961 * which stores the data of the DESCRIPTION section, 1962 * while some might need very small amount of memory. 1963 * Therefore explicitly setting the value of buflen field for 1964 * each sec_buff. 1965 */ 1966 rec->desc.buflen = 10 * BUFLEN; 1967 rec->desc.data = emalloc(rec->desc.buflen); 1968 rec->desc.offset = 0; 1969 1970 rec->lib.buflen = BUFLEN / 2; 1971 rec->lib.data = emalloc(rec->lib.buflen); 1972 rec->lib.offset = 0; 1973 1974 rec->return_vals.buflen = BUFLEN; 1975 rec->return_vals.data = emalloc(rec->return_vals.buflen); 1976 rec->return_vals.offset = 0; 1977 1978 rec->exit_status.buflen = BUFLEN; 1979 rec->exit_status.data = emalloc(rec->exit_status.buflen); 1980 rec->exit_status.offset = 0; 1981 1982 rec->env.buflen = BUFLEN; 1983 rec->env.data = emalloc(rec->env.buflen); 1984 rec->env.offset = 0; 1985 1986 rec->files.buflen = BUFLEN; 1987 rec->files.data = emalloc(rec->files.buflen); 1988 rec->files.offset = 0; 1989 1990 rec->diagnostics.buflen = BUFLEN; 1991 rec->diagnostics.data = emalloc(rec->diagnostics.buflen); 1992 rec->diagnostics.offset = 0; 1993 1994 rec->errors.buflen = BUFLEN; 1995 rec->errors.data = emalloc(rec->errors.buflen); 1996 rec->errors.offset = 0; 1997 } 1998 1999 /* 2000 * free_secbuffs-- 2001 * This function should be called at the end, when all the pages have been 2002 * parsed. 2003 * It frees the memory allocated to sec_buffs by init_secbuffs in the starting. 2004 */ 2005 static void 2006 free_secbuffs(mandb_rec *rec) 2007 { 2008 free(rec->desc.data); 2009 free(rec->lib.data); 2010 free(rec->return_vals.data); 2011 free(rec->exit_status.data); 2012 free(rec->env.data); 2013 free(rec->files.data); 2014 free(rec->diagnostics.data); 2015 free(rec->errors.data); 2016 } 2017 2018 static void 2019 replace_hyph(char *str) 2020 { 2021 char *iter = str; 2022 while ((iter = strchr(iter, ASCII_HYPH)) != NULL) 2023 *iter = '-'; 2024 2025 iter = str; 2026 while ((iter = strchr(iter, ASCII_NBRSP)) != NULL) 2027 *iter = '-'; 2028 } 2029 2030 static char * 2031 parse_escape(const char *str) 2032 { 2033 const char *backslash, *last_backslash; 2034 char *result, *iter; 2035 size_t len; 2036 2037 assert(str); 2038 2039 last_backslash = str; 2040 backslash = strchr(str, '\\'); 2041 if (backslash == NULL) { 2042 result = estrdup(str); 2043 replace_hyph(result); 2044 return result; 2045 } 2046 2047 result = emalloc(strlen(str) + 1); 2048 iter = result; 2049 2050 do { 2051 len = backslash - last_backslash; 2052 memcpy(iter, last_backslash, len); 2053 iter += len; 2054 if (backslash[1] == '-' || backslash[1] == ' ') { 2055 *iter++ = backslash[1]; 2056 last_backslash = backslash + 2; 2057 backslash = strchr(last_backslash, '\\'); 2058 } else { 2059 ++backslash; 2060 mandoc_escape(&backslash, NULL, NULL); 2061 last_backslash = backslash; 2062 if (backslash == NULL) 2063 break; 2064 backslash = strchr(last_backslash, '\\'); 2065 } 2066 } while (backslash != NULL); 2067 if (last_backslash != NULL) 2068 strcpy(iter, last_backslash); 2069 2070 replace_hyph(result); 2071 return result; 2072 } 2073 2074 /* 2075 * append-- 2076 * Concatenates a space and src at the end of sbuff->data (much like concat in 2077 * apropos-utils.c). 2078 * Rather than reallocating space for writing data, it uses the value of the 2079 * offset field of sec_buff to write new data at the free space left in the 2080 * buffer. 2081 * In case the size of the data to be appended exceeds the number of bytes left 2082 * in the buffer, it reallocates buflen number of bytes and then continues. 2083 * Value of offset field should be adjusted as new data is written. 2084 * 2085 * NOTE: This function does not write the null byte at the end of the buffers, 2086 * write a null byte at the position pointed to by offset before inserting data 2087 * in the db. 2088 */ 2089 static void 2090 append(secbuff *sbuff, const char *src) 2091 { 2092 short flag = 0; 2093 size_t srclen, newlen; 2094 char *temp; 2095 2096 assert(src != NULL); 2097 temp = parse_escape(src); 2098 srclen = strlen(temp); 2099 2100 if (sbuff->data == NULL) { 2101 sbuff->data = emalloc(sbuff->buflen); 2102 sbuff->offset = 0; 2103 } 2104 2105 newlen = sbuff->offset + srclen + 2; 2106 if (newlen >= sbuff->buflen) { 2107 while (sbuff->buflen < newlen) 2108 sbuff->buflen += sbuff->buflen; 2109 sbuff->data = erealloc(sbuff->data, sbuff->buflen); 2110 flag = 1; 2111 } 2112 2113 /* Append a space at the end of the buffer. */ 2114 if (sbuff->offset || flag) 2115 sbuff->data[sbuff->offset++] = ' '; 2116 /* Now, copy src at the end of the buffer. */ 2117 memcpy(sbuff->data + sbuff->offset, temp, srclen); 2118 sbuff->offset += srclen; 2119 free(temp); 2120 } 2121 2122 static void 2123 usage(void) 2124 { 2125 fprintf(stderr, "Usage: %s [-floQqv] [-C path]\n", getprogname()); 2126 exit(1); 2127 } 2128
Indexes created Mon Sep 29 21:09:56 GMT 2025