makemandb.c revision 1.43
1 /* $NetBSD: makemandb.c,v 1.43 2016/10/03 13:53:39 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 1.43 2016/10/03 13:53:39 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 } 530 531 if (!S_ISREG(sb.st_mode) && !S_ISLNK(sb.st_mode)) 532 return; 533 534 if (sb.st_size == 0) { 535 if (mflags.verbosity) 536 warnx("Empty file: %s", file); 537 return; 538 } 539 build_file_cache(db, parent, file, &sb); 540 } 541 542 /* build_file_cache -- 543 * This function generates an md5 hash of the file passed as its 2nd parameter 544 * and stores it in a temporary table file_cache along with the full file path. 545 * This is done to support incremental updation of the database. 546 * The temporary table file_cache is dropped thereafter in the function 547 * update_db(), once the database has been updated. 548 */ 549 static void 550 build_file_cache(sqlite3 *db, const char *parent, const char *file, 551 struct stat *sb) 552 { 553 const char *sqlstr; 554 sqlite3_stmt *stmt = NULL; 555 int rc, idx; 556 assert(file != NULL); 557 dev_t device_cache = sb->st_dev; 558 ino_t inode_cache = sb->st_ino; 559 time_t mtime_cache = sb->st_mtime; 560 561 sqlstr = "INSERT INTO metadb.file_cache VALUES (:device, :inode," 562 " :mtime, :parent, :file)"; 563 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 564 if (rc != SQLITE_OK) { 565 if (mflags.verbosity) 566 warnx("%s", sqlite3_errmsg(db)); 567 return; 568 } 569 570 idx = sqlite3_bind_parameter_index(stmt, ":device"); 571 rc = sqlite3_bind_int64(stmt, idx, device_cache); 572 if (rc != SQLITE_OK) { 573 if (mflags.verbosity) 574 warnx("%s", sqlite3_errmsg(db)); 575 sqlite3_finalize(stmt); 576 return; 577 } 578 579 idx = sqlite3_bind_parameter_index(stmt, ":inode"); 580 rc = sqlite3_bind_int64(stmt, idx, inode_cache); 581 if (rc != SQLITE_OK) { 582 if (mflags.verbosity) 583 warnx("%s", sqlite3_errmsg(db)); 584 sqlite3_finalize(stmt); 585 return; 586 } 587 588 idx = sqlite3_bind_parameter_index(stmt, ":mtime"); 589 rc = sqlite3_bind_int64(stmt, idx, mtime_cache); 590 if (rc != SQLITE_OK) { 591 if (mflags.verbosity) 592 warnx("%s", sqlite3_errmsg(db)); 593 sqlite3_finalize(stmt); 594 return; 595 } 596 597 idx = sqlite3_bind_parameter_index(stmt, ":parent"); 598 rc = sqlite3_bind_text(stmt, idx, parent, -1, NULL); 599 if (rc != SQLITE_OK) { 600 if (mflags.verbosity) 601 warnx("%s", sqlite3_errmsg(db)); 602 sqlite3_finalize(stmt); 603 return; 604 } 605 606 idx = sqlite3_bind_parameter_index(stmt, ":file"); 607 rc = sqlite3_bind_text(stmt, idx, file, -1, NULL); 608 if (rc != SQLITE_OK) { 609 if (mflags.verbosity) 610 warnx("%s", sqlite3_errmsg(db)); 611 sqlite3_finalize(stmt); 612 return; 613 } 614 615 sqlite3_step(stmt); 616 sqlite3_finalize(stmt); 617 } 618 619 static void 620 update_existing_entry(sqlite3 *db, const char *file, const char *hash, 621 mandb_rec *rec, int *new_count, int *link_count, int *err_count) 622 { 623 int update_count, rc, idx; 624 const char *inner_sqlstr; 625 sqlite3_stmt *inner_stmt; 626 627 update_count = sqlite3_total_changes(db); 628 inner_sqlstr = "UPDATE mandb_meta SET device = :device," 629 " inode = :inode, mtime = :mtime WHERE" 630 " md5_hash = :md5 AND file = :file AND" 631 " (device <> :device2 OR inode <> " 632 " :inode2 OR mtime <> :mtime2)"; 633 rc = sqlite3_prepare_v2(db, inner_sqlstr, -1, &inner_stmt, NULL); 634 if (rc != SQLITE_OK) { 635 if (mflags.verbosity) 636 warnx("%s", sqlite3_errmsg(db)); 637 return; 638 } 639 idx = sqlite3_bind_parameter_index(inner_stmt, ":device"); 640 sqlite3_bind_int64(inner_stmt, idx, rec->device); 641 idx = sqlite3_bind_parameter_index(inner_stmt, ":inode"); 642 sqlite3_bind_int64(inner_stmt, idx, rec->inode); 643 idx = sqlite3_bind_parameter_index(inner_stmt, ":mtime"); 644 sqlite3_bind_int64(inner_stmt, idx, rec->mtime); 645 idx = sqlite3_bind_parameter_index(inner_stmt, ":md5"); 646 sqlite3_bind_text(inner_stmt, idx, hash, -1, NULL); 647 idx = sqlite3_bind_parameter_index(inner_stmt, ":file"); 648 sqlite3_bind_text(inner_stmt, idx, file, -1, NULL); 649 idx = sqlite3_bind_parameter_index(inner_stmt, ":device2"); 650 sqlite3_bind_int64(inner_stmt, idx, rec->device); 651 idx = sqlite3_bind_parameter_index(inner_stmt, ":inode2"); 652 sqlite3_bind_int64(inner_stmt, idx, rec->inode); 653 idx = sqlite3_bind_parameter_index(inner_stmt, ":mtime2"); 654 sqlite3_bind_int64(inner_stmt, idx, rec->mtime); 655 656 rc = sqlite3_step(inner_stmt); 657 if (rc == SQLITE_DONE) { 658 /* Check if an update has been performed. */ 659 if (update_count != sqlite3_total_changes(db)) { 660 if (mflags.verbosity == 2) 661 printf("Updated %s\n", file); 662 (*new_count)++; 663 } else { 664 /* Otherwise it was a hardlink. */ 665 (*link_count)++; 666 } 667 } else { 668 if (mflags.verbosity == 2) 669 warnx("Could not update the meta data for %s", file); 670 (*err_count)++; 671 } 672 sqlite3_finalize(inner_stmt); 673 } 674 675 /* read_and_decompress -- 676 * Reads the given file into memory. If it is compressed, decompress 677 * it before returning to the caller. 678 */ 679 static int 680 read_and_decompress(const char *file, void **bufp, size_t *len) 681 { 682 size_t off; 683 ssize_t r; 684 struct archive *a; 685 struct archive_entry *ae; 686 char *buf; 687 688 if ((a = archive_read_new()) == NULL) 689 errx(EXIT_FAILURE, "memory allocation failed"); 690 691 *bufp = NULL; 692 if (archive_read_support_compression_all(a) != ARCHIVE_OK || 693 archive_read_support_format_raw(a) != ARCHIVE_OK || 694 archive_read_open_filename(a, file, 65536) != ARCHIVE_OK || 695 archive_read_next_header(a, &ae) != ARCHIVE_OK) 696 goto archive_error; 697 *len = 65536; 698 buf = emalloc(*len); 699 off = 0; 700 for (;;) { 701 r = archive_read_data(a, buf + off, *len - off); 702 if (r == ARCHIVE_OK) { 703 archive_read_finish(a); 704 *bufp = buf; 705 *len = off; 706 return 0; 707 } 708 if (r <= 0) { 709 free(buf); 710 break; 711 } 712 off += r; 713 if (off == *len) { 714 *len *= 2; 715 if (*len < off) { 716 if (mflags.verbosity) 717 warnx("File too large: %s", file); 718 free(buf); 719 archive_read_finish(a); 720 return -1; 721 } 722 buf = erealloc(buf, *len); 723 } 724 } 725 726 archive_error: 727 warnx("Error while reading `%s': %s", file, archive_error_string(a)); 728 archive_read_finish(a); 729 return -1; 730 } 731 732 /* update_db -- 733 * Does an incremental updation of the database by checking the file_cache. 734 * It parses and adds the pages which are present in file_cache, 735 * but not in the database. 736 * It also removes the pages which are present in the databse, 737 * but not in the file_cache. 738 */ 739 static void 740 update_db(sqlite3 *db, struct mparse *mp, mandb_rec *rec) 741 { 742 const char *sqlstr; 743 sqlite3_stmt *stmt = NULL; 744 char *file; 745 char *parent; 746 char *errmsg = NULL; 747 char *md5sum; 748 void *buf; 749 size_t buflen; 750 struct sql_row { 751 struct sql_row *next; 752 dev_t device; 753 ino_t inode; 754 time_t mtime; 755 char *parent; 756 char *file; 757 } *rows, *row; 758 int new_count = 0; /* Counter for newly indexed/updated pages */ 759 int total_count = 0; /* Counter for total number of pages */ 760 int err_count = 0; /* Counter for number of failed pages */ 761 int link_count = 0; /* Counter for number of hard/sym links */ 762 int md5_status; 763 int rc; 764 765 sqlstr = "SELECT device, inode, mtime, parent, file" 766 " FROM metadb.file_cache fc" 767 " WHERE NOT EXISTS(SELECT 1 FROM mandb_meta WHERE" 768 " device = fc.device AND inode = fc.inode AND " 769 " mtime = fc.mtime AND file = fc.file)"; 770 771 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 772 if (rc != SQLITE_OK) { 773 if (mflags.verbosity) 774 warnx("%s", sqlite3_errmsg(db)); 775 close_db(db); 776 errx(EXIT_FAILURE, "Could not query file cache"); 777 } 778 779 buf = NULL; 780 rows = NULL; 781 while (sqlite3_step(stmt) == SQLITE_ROW) { 782 row = emalloc(sizeof(struct sql_row)); 783 row->device = sqlite3_column_int64(stmt, 0); 784 row->inode = sqlite3_column_int64(stmt, 1); 785 row->mtime = sqlite3_column_int64(stmt, 2); 786 row->parent = estrdup((const char *) sqlite3_column_text(stmt, 3)); 787 row->file = estrdup((const char *) sqlite3_column_text(stmt, 4)); 788 row->next = rows; 789 rows = row; 790 total_count++; 791 } 792 sqlite3_finalize(stmt); 793 794 for ( ; rows != NULL; free(parent), free(file), free(buf)) { 795 row = rows; 796 rows = rows->next; 797 798 rec->device = row->device; 799 rec->inode = row->inode; 800 rec->mtime = row->mtime; 801 parent = row->parent; 802 file = row->file; 803 free(row); 804 805 if (read_and_decompress(file, &buf, &buflen)) { 806 err_count++; 807 continue; 808 } 809 md5_status = check_md5(file, db, "mandb_meta", &md5sum, buf, 810 buflen); 811 assert(md5sum != NULL); 812 if (md5_status == -1) { 813 if (mflags.verbosity) 814 warnx("An error occurred in checking md5 value" 815 " for file %s", file); 816 err_count++; 817 continue; 818 } 819 820 if (md5_status == 0) { 821 /* 822 * The MD5 hash is already present in the database, 823 * so simply update the metadata, ignoring symlinks. 824 */ 825 struct stat sb; 826 stat(file, &sb); 827 if (S_ISLNK(sb.st_mode)) { 828 free(md5sum); 829 link_count++; 830 continue; 831 } 832 update_existing_entry(db, file, md5sum, rec, 833 &new_count, &link_count, &err_count); 834 free(md5sum); 835 continue; 836 } 837 838 if (md5_status == 1) { 839 /* 840 * The MD5 hash was not present in the database. 841 * This means is either a new file or an updated file. 842 * We should go ahead with parsing. 843 */ 844 if (chdir(parent) == -1) { 845 if (mflags.verbosity) 846 warn("chdir failed for `%s', could " 847 "not index `%s'", parent, file); 848 err_count++; 849 free(md5sum); 850 continue; 851 } 852 853 if (mflags.verbosity == 2) 854 printf("Parsing: %s\n", file); 855 rec->md5_hash = md5sum; 856 rec->file_path = estrdup(file); 857 // file_path is freed by insert_into_db itself. 858 begin_parse(file, mp, rec, buf, buflen); 859 if (insert_into_db(db, rec) < 0) { 860 if (mflags.verbosity) 861 warnx("Error in indexing `%s'", file); 862 err_count++; 863 } else { 864 new_count++; 865 } 866 } 867 } 868 869 if (mflags.verbosity == 2) { 870 printf("Total Number of new or updated pages encountered = %d\n" 871 "Total number of (hard or symbolic) links found = %d\n" 872 "Total number of pages that were successfully" 873 " indexed/updated = %d\n" 874 "Total number of pages that could not be indexed" 875 " due to errors = %d\n", 876 total_count - link_count, link_count, new_count, err_count); 877 } 878 879 if (mflags.recreate) 880 return; 881 882 if (mflags.verbosity == 2) 883 printf("Deleting stale index entries\n"); 884 885 sqlstr = "DELETE FROM mandb_meta WHERE file NOT IN" 886 " (SELECT file FROM metadb.file_cache);" 887 "DELETE FROM mandb_links WHERE md5_hash NOT IN" 888 " (SELECT md5_hash from mandb_meta);" 889 "DROP TABLE metadb.file_cache;" 890 "DELETE FROM mandb WHERE rowid NOT IN" 891 " (SELECT id FROM mandb_meta);"; 892 893 sqlite3_exec(db, sqlstr, NULL, NULL, &errmsg); 894 if (errmsg != NULL) { 895 warnx("Removing old entries failed: %s", errmsg); 896 warnx("Please rebuild database from scratch with -f."); 897 free(errmsg); 898 return; 899 } 900 } 901 902 /* 903 * begin_parse -- 904 * parses the man page using libmandoc 905 */ 906 static void 907 begin_parse(const char *file, struct mparse *mp, mandb_rec *rec, 908 const void *buf, size_t len) 909 { 910 struct roff_man *roff; 911 mparse_reset(mp); 912 913 rec->xr_found = 0; 914 915 if (mparse_readmem(mp, buf, len, file) >= MANDOCLEVEL_BADARG) { 916 /* Printing this warning at verbosity level 2 917 * because some packages from pkgsrc might trigger several 918 * of such warnings. 919 */ 920 if (mflags.verbosity == 2) 921 warnx("%s: Parse failure", file); 922 return; 923 } 924 925 mparse_result(mp, &roff, NULL); 926 if (roff == NULL) { 927 if (mflags.verbosity == 2) 928 warnx("Not a roff(7) page"); 929 return; 930 } 931 932 if (roff->macroset == MACROSET_MDOC) { 933 mdoc_validate(roff); 934 rec->page_type = MDOC; 935 proff_node(roff->first->child, rec, mdocs); 936 } else if (roff->macroset == MACROSET_MAN) { 937 man_validate(roff); 938 rec->page_type = MAN; 939 proff_node(roff->first->child, rec, mans); 940 } else 941 warnx("Unknown macroset %d", roff->macroset); 942 set_machine(roff, rec); 943 set_section(roff, rec); 944 } 945 946 /* 947 * set_section -- 948 * Extracts the section number and normalizes it to only the numeric part 949 * (Which should be the first character of the string). 950 */ 951 static void 952 set_section(const struct roff_man *rm, mandb_rec *rec) 953 { 954 if (!rm) 955 return; 956 const struct roff_meta *rm_meta = &rm->meta; 957 const char *s = rm_meta->msec == NULL ? "?" : rm_meta->msec; 958 easprintf(&rec->section, "%s", s); 959 if (rec->section[0] == '?' && mflags.verbosity == 2) 960 warnx("%s: Missing section number", rec->file_path); 961 } 962 963 /* 964 * get_machine -- 965 * Extracts the machine architecture information if available. 966 */ 967 static void 968 set_machine(const struct roff_man *rm, mandb_rec *rec) 969 { 970 if (rm == NULL) 971 return; 972 const struct roff_meta *rm_meta = &rm->meta; 973 if (rm_meta->arch) 974 rec->machine = estrdup(rm_meta->arch); 975 } 976 977 /* 978 * pmdoc_Nm -- 979 * Extracts the Name of the manual page from the .Nm macro 980 */ 981 static void 982 pmdoc_Nm(const struct roff_node *n, mandb_rec *rec) 983 { 984 if (n->sec != SEC_NAME) 985 return; 986 987 for (n = n->child; n; n = n->next) { 988 if (n->type == ROFFT_TEXT) { 989 char *escaped_name = parse_escape(n->string); 990 concat(&rec->name, escaped_name); 991 free(escaped_name); 992 } 993 } 994 } 995 996 /* 997 * pmdoc_Nd -- 998 * Extracts the one line description of the man page from the .Nd macro 999 */ 1000 static void 1001 pmdoc_Nd(const struct roff_node *n, mandb_rec *rec) 1002 { 1003 if (n->type == ROFFT_BODY) 1004 deroff(&rec->name_desc, n); 1005 1006 } 1007 1008 /* 1009 * pmdoc_macro_handler-- 1010 * This function is a single point of handling all the special macros that we 1011 * want to handle especially. For example the .Xr macro for properly parsing 1012 * the referenced page name along with the section number, or the .Pp macro 1013 * for adding a new line whenever we encounter it. 1014 */ 1015 static void 1016 pmdoc_macro_handler(const struct roff_node *n, mandb_rec *rec, int doct) 1017 { 1018 const struct roff_node *sn; 1019 assert(n); 1020 1021 switch (doct) { 1022 /* Parse the man page references. 1023 * Basically the .Xr macros are used like: 1024 * .Xr ls 1 1025 * and formatted like this: 1026 * ls(1) 1027 * Prepare a buffer to format the data like the above example and call 1028 * pmdoc_parse_section to append it. 1029 */ 1030 case MDOC_Xr: 1031 n = n->child; 1032 while (n->type != ROFFT_TEXT && n->next) 1033 n = n->next; 1034 1035 if (n && n->type != ROFFT_TEXT) 1036 return; 1037 sn = n; 1038 if (n->next) 1039 n = n->next; 1040 1041 while (n->type != ROFFT_TEXT && n->next) 1042 n = n->next; 1043 1044 if (n && n->type == ROFFT_TEXT) { 1045 char *buf; 1046 easprintf(&buf, "%s(%s)", sn->string, n->string); 1047 mdoc_parse_section(n->sec, buf, rec); 1048 free(buf); 1049 } 1050 1051 break; 1052 1053 /* Parse the .Pp macro to add a new line */ 1054 case MDOC_Pp: 1055 if (n->type == ROFFT_TEXT) 1056 mdoc_parse_section(n->sec, "\n", rec); 1057 break; 1058 default: 1059 break; 1060 } 1061 1062 } 1063 1064 /* 1065 * pmdoc_Xr, pmdoc_Pp-- 1066 * Empty stubs. 1067 * The parser calls these functions each time it encounters 1068 * a .Xr or .Pp macro. We are parsing all the data from 1069 * the pmdoc_Sh function, so don't do anything here. 1070 * (See if else blocks in pmdoc_Sh.) 1071 */ 1072 static void 1073 pmdoc_Xr(const struct roff_node *n, mandb_rec *rec) 1074 { 1075 } 1076 1077 static void 1078 pmdoc_Pp(const struct roff_node *n, mandb_rec *rec) 1079 { 1080 } 1081 1082 /* 1083 * pmdoc_Sh -- 1084 * Called when a .Sh macro is encountered and tries to parse its body 1085 */ 1086 static void 1087 pmdoc_Sh(const struct roff_node *n, mandb_rec *rec) 1088 { 1089 if (n == NULL) 1090 return; 1091 1092 if (n->type == ROFFT_BLOCK) 1093 mdoc_parse_Sh(n->body, rec); 1094 } 1095 1096 /* 1097 * Called from pmdoc_Sh to parse body of a .Sh macro. It calls 1098 * mdoc_parse_section to append the data to the section specific buffer. 1099 * Two special macros which may occur inside the body of Sh are .Nm and .Xr and 1100 * they need special handling, thus the separate if branches for them. 1101 */ 1102 static void 1103 mdoc_parse_Sh(const struct roff_node *n, mandb_rec *rec) 1104 { 1105 if (n == NULL || (n->type != ROFFT_TEXT && n->tok == MDOC_MAX)) 1106 return; 1107 int xr_found = 0; 1108 1109 if (n->type == ROFFT_TEXT) { 1110 mdoc_parse_section(n->sec, n->string, rec); 1111 } else if (mdocs[n->tok] == pmdoc_Nm && rec->name != NULL) { 1112 /* 1113 * When encountering a .Nm macro, substitute it 1114 * with its previously cached value of the argument. 1115 */ 1116 mdoc_parse_section(n->sec, rec->name, rec); 1117 } else if (mdocs[n->tok] == pmdoc_Xr) { 1118 /* 1119 * When encountering other inline macros, 1120 * call pmdoc_macro_handler. 1121 */ 1122 pmdoc_macro_handler(n, rec, MDOC_Xr); 1123 xr_found = 1; 1124 } else if (mdocs[n->tok] == pmdoc_Pp) { 1125 pmdoc_macro_handler(n, rec, MDOC_Pp); 1126 } 1127 1128 /* 1129 * If an Xr macro was encountered then the child node has 1130 * already been explored by pmdoc_macro_handler. 1131 */ 1132 if (xr_found == 0) 1133 mdoc_parse_Sh(n->child, rec); 1134 mdoc_parse_Sh(n->next, rec); 1135 } 1136 1137 /* 1138 * mdoc_parse_section-- 1139 * Utility function for parsing sections of the mdoc type pages. 1140 * Takes two params: 1141 * 1. sec is an enum which indicates the section in which we are present 1142 * 2. string is the string which we need to append to the secbuff for this 1143 * particular section. 1144 * The function appends string to the global section buffer and returns. 1145 */ 1146 static void 1147 mdoc_parse_section(enum roff_sec sec, const char *string, mandb_rec *rec) 1148 { 1149 /* 1150 * If the user specified the 'l' flag, then parse and store only the 1151 * NAME section. Ignore the rest. 1152 */ 1153 if (mflags.limit) 1154 return; 1155 1156 switch (sec) { 1157 case SEC_LIBRARY: 1158 append(&rec->lib, string); 1159 break; 1160 case SEC_RETURN_VALUES: 1161 append(&rec->return_vals, string); 1162 break; 1163 case SEC_ENVIRONMENT: 1164 append(&rec->env, string); 1165 break; 1166 case SEC_FILES: 1167 append(&rec->files, string); 1168 break; 1169 case SEC_EXIT_STATUS: 1170 append(&rec->exit_status, string); 1171 break; 1172 case SEC_DIAGNOSTICS: 1173 append(&rec->diagnostics, string); 1174 break; 1175 case SEC_ERRORS: 1176 append(&rec->errors, string); 1177 break; 1178 case SEC_NAME: 1179 case SEC_SYNOPSIS: 1180 case SEC_EXAMPLES: 1181 case SEC_STANDARDS: 1182 case SEC_HISTORY: 1183 case SEC_AUTHORS: 1184 case SEC_BUGS: 1185 break; 1186 default: 1187 append(&rec->desc, string); 1188 break; 1189 } 1190 } 1191 1192 static void 1193 proff_node(const struct roff_node *n, mandb_rec *rec, const proff_nf *func) 1194 { 1195 if (n == NULL) 1196 return; 1197 1198 switch (n->type) { 1199 case (ROFFT_BODY): 1200 /* FALLTHROUGH */ 1201 case (ROFFT_BLOCK): 1202 /* FALLTHROUGH */ 1203 case (ROFFT_ELEM): 1204 if (func[n->tok] != NULL) 1205 (*func[n->tok])(n, rec); 1206 break; 1207 default: 1208 break; 1209 } 1210 1211 proff_node(n->child, rec, func); 1212 proff_node(n->next, rec, func); 1213 } 1214 1215 /* 1216 * pman_parse_name -- 1217 * Parses the NAME section and puts the complete content in the name_desc 1218 * variable. 1219 */ 1220 static void 1221 pman_parse_name(const struct roff_node *n, mandb_rec *rec) 1222 { 1223 if (n == NULL) 1224 return; 1225 1226 if (n->type == ROFFT_TEXT) { 1227 char *tmp = parse_escape(n->string); 1228 concat(&rec->name_desc, tmp); 1229 free(tmp); 1230 } 1231 1232 if (n->child) 1233 pman_parse_name(n->child, rec); 1234 1235 if(n->next) 1236 pman_parse_name(n->next, rec); 1237 } 1238 1239 /* 1240 * A stub function to be able to parse the macros like .B embedded inside 1241 * a section. 1242 */ 1243 static void 1244 pman_block(const struct roff_node *n, mandb_rec *rec) 1245 { 1246 } 1247 1248 /* 1249 * pman_sh -- 1250 * This function does one of the two things: 1251 * 1. If the present section is NAME, then it will: 1252 * (a) Extract the name of the page (in case of multiple comma separated 1253 * names, it will pick up the first one). 1254 * (b) Build a space spearated list of all the symlinks/hardlinks to 1255 * this page and store in the buffer 'links'. These are extracted from 1256 * the comma separated list of names in the NAME section as well. 1257 * (c) Move on to the one line description section, which is after the list 1258 * of names in the NAME section. 1259 * 2. Otherwise, it will check the section name and call the man_parse_section 1260 * function, passing the enum corresponding to that section. 1261 */ 1262 static void 1263 pman_sh(const struct roff_node *n, mandb_rec *rec) 1264 { 1265 static const struct { 1266 enum man_sec section; 1267 const char *header; 1268 } mapping[] = { 1269 { MANSEC_DESCRIPTION, "DESCRIPTION" }, 1270 { MANSEC_SYNOPSIS, "SYNOPSIS" }, 1271 { MANSEC_LIBRARY, "LIBRARY" }, 1272 { MANSEC_ERRORS, "ERRORS" }, 1273 { MANSEC_FILES, "FILES" }, 1274 { MANSEC_RETURN_VALUES, "RETURN VALUE" }, 1275 { MANSEC_RETURN_VALUES, "RETURN VALUES" }, 1276 { MANSEC_EXIT_STATUS, "EXIT STATUS" }, 1277 { MANSEC_EXAMPLES, "EXAMPLES" }, 1278 { MANSEC_EXAMPLES, "EXAMPLE" }, 1279 { MANSEC_STANDARDS, "STANDARDS" }, 1280 { MANSEC_HISTORY, "HISTORY" }, 1281 { MANSEC_BUGS, "BUGS" }, 1282 { MANSEC_AUTHORS, "AUTHORS" }, 1283 { MANSEC_COPYRIGHT, "COPYRIGHT" }, 1284 }; 1285 const struct roff_node *head; 1286 char *name_desc; 1287 size_t sz; 1288 size_t i; 1289 1290 if ((head = n->parent->head) == NULL || (head = head->child) == NULL || 1291 head->type != ROFFT_TEXT) 1292 return; 1293 1294 /* 1295 * Check if this section should be extracted and 1296 * where it should be stored. Handled the trival cases first. 1297 */ 1298 for (i = 0; i < sizeof(mapping) / sizeof(mapping[0]); ++i) { 1299 if (strcmp(head->string, mapping[i].header) == 0) { 1300 man_parse_section(mapping[i].section, n, rec); 1301 return; 1302 } 1303 } 1304 1305 if (strcmp(head->string, "NAME") == 0) { 1306 /* 1307 * We are in the NAME section. 1308 * pman_parse_name will put the complete content in name_desc. 1309 */ 1310 pman_parse_name(n, rec); 1311 1312 name_desc = rec->name_desc; 1313 if (name_desc == NULL) 1314 return; 1315 1316 /* Remove any leading spaces. */ 1317 while (name_desc[0] == ' ') 1318 name_desc++; 1319 1320 /* If the line begins with a "\&", avoid those */ 1321 if (name_desc[0] == '\\' && name_desc[1] == '&') 1322 name_desc += 2; 1323 1324 /* Now name_desc should be left with a comma-space 1325 * separated list of names and the one line description 1326 * of the page: 1327 * "a, b, c \- sample description" 1328 * Take out the first name, before the first comma 1329 * (or space) and store it in rec->name. 1330 * If the page has aliases then they should be 1331 * in the form of a comma separated list. 1332 * Keep looping while there is a comma in name_desc, 1333 * extract the alias name and store in rec->links. 1334 * When there are no more commas left, break out. 1335 */ 1336 int has_alias = 0; // Any more aliases left? 1337 while (*name_desc) { 1338 /* Remove any leading spaces or hyphens. */ 1339 if (name_desc[0] == ' ' || name_desc[0] == '-') { 1340 name_desc++; 1341 continue; 1342 } 1343 sz = strcspn(name_desc, ", "); 1344 1345 /* Extract the first term and store it in rec->name. */ 1346 if (rec->name == NULL) { 1347 if (name_desc[sz] == ',') 1348 has_alias = 1; 1349 rec->name = estrndup(name_desc, sz); 1350 /* XXX This would only happen with a poorly 1351 * written man page, maybe warn? */ 1352 if (name_desc[sz] == '\0') 1353 break; 1354 name_desc += sz + 1; 1355 continue; 1356 } 1357 1358 /* 1359 * Once rec->name is set, rest of the names 1360 * are to be treated as links or aliases. 1361 */ 1362 if (rec->name && has_alias) { 1363 if (name_desc[sz] != ',') { 1364 /* No more commas left --> no more 1365 * aliases to take out */ 1366 has_alias = 0; 1367 } 1368 concat2(&rec->links, name_desc, sz); 1369 /* XXX This would only happen with a poorly 1370 * written man page, maybe warn? */ 1371 if (name_desc[sz] == '\0') 1372 break; 1373 name_desc += sz + 1; 1374 continue; 1375 } 1376 break; 1377 } 1378 1379 /* Parse any escape sequences that might be there */ 1380 char *temp = parse_escape(name_desc); 1381 free(rec->name_desc); 1382 rec->name_desc = temp; 1383 temp = parse_escape(rec->name); 1384 free(rec->name); 1385 rec->name = temp; 1386 return; 1387 } 1388 1389 /* The RETURN VALUE section might be specified in multiple ways */ 1390 if (strcmp(head->string, "RETURN") == 0 && 1391 head->next != NULL && head->next->type == ROFFT_TEXT && 1392 (strcmp(head->next->string, "VALUE") == 0 || 1393 strcmp(head->next->string, "VALUES") == 0)) { 1394 man_parse_section(MANSEC_RETURN_VALUES, n, rec); 1395 return; 1396 } 1397 1398 /* 1399 * EXIT STATUS section can also be specified all on one line or on two 1400 * separate lines. 1401 */ 1402 if (strcmp(head->string, "EXIT") == 0 && 1403 head->next != NULL && head->next->type == ROFFT_TEXT && 1404 strcmp(head->next->string, "STATUS") == 0) { 1405 man_parse_section(MANSEC_EXIT_STATUS, n, rec); 1406 return; 1407 } 1408 1409 /* Store the rest of the content in desc. */ 1410 man_parse_section(MANSEC_NONE, n, rec); 1411 } 1412 1413 /* 1414 * pman_parse_node -- 1415 * Generic function to iterate through a node. Usually called from 1416 * man_parse_section to parse a particular section of the man page. 1417 */ 1418 static void 1419 pman_parse_node(const struct roff_node *n, secbuff *s) 1420 { 1421 if (n == NULL) 1422 return; 1423 1424 if (n->type == ROFFT_TEXT) 1425 append(s, n->string); 1426 1427 pman_parse_node(n->child, s); 1428 pman_parse_node(n->next, s); 1429 } 1430 1431 /* 1432 * man_parse_section -- 1433 * Takes two parameters: 1434 * sec: Tells which section we are present in 1435 * n: Is the present node of the AST. 1436 * Depending on the section, we call pman_parse_node to parse that section and 1437 * concatenate the content from that section into the buffer for that section. 1438 */ 1439 static void 1440 man_parse_section(enum man_sec sec, const struct roff_node *n, mandb_rec *rec) 1441 { 1442 /* 1443 * If the user sepecified the 'l' flag then just parse 1444 * the NAME section, ignore the rest. 1445 */ 1446 if (mflags.limit) 1447 return; 1448 1449 switch (sec) { 1450 case MANSEC_LIBRARY: 1451 pman_parse_node(n, &rec->lib); 1452 break; 1453 case MANSEC_RETURN_VALUES: 1454 pman_parse_node(n, &rec->return_vals); 1455 break; 1456 case MANSEC_ENVIRONMENT: 1457 pman_parse_node(n, &rec->env); 1458 break; 1459 case MANSEC_FILES: 1460 pman_parse_node(n, &rec->files); 1461 break; 1462 case MANSEC_EXIT_STATUS: 1463 pman_parse_node(n, &rec->exit_status); 1464 break; 1465 case MANSEC_DIAGNOSTICS: 1466 pman_parse_node(n, &rec->diagnostics); 1467 break; 1468 case MANSEC_ERRORS: 1469 pman_parse_node(n, &rec->errors); 1470 break; 1471 case MANSEC_NAME: 1472 case MANSEC_SYNOPSIS: 1473 case MANSEC_EXAMPLES: 1474 case MANSEC_STANDARDS: 1475 case MANSEC_HISTORY: 1476 case MANSEC_BUGS: 1477 case MANSEC_AUTHORS: 1478 case MANSEC_COPYRIGHT: 1479 break; 1480 default: 1481 pman_parse_node(n, &rec->desc); 1482 break; 1483 } 1484 1485 } 1486 1487 /* 1488 * insert_into_db -- 1489 * Inserts the parsed data of the man page in the Sqlite databse. 1490 * If any of the values is NULL, then we cleanup and return -1 indicating 1491 * an error. 1492 * Otherwise, store the data in the database and return 0. 1493 */ 1494 static int 1495 insert_into_db(sqlite3 *db, mandb_rec *rec) 1496 { 1497 int rc = 0; 1498 int idx = -1; 1499 const char *sqlstr = NULL; 1500 sqlite3_stmt *stmt = NULL; 1501 char *ln = NULL; 1502 char *errmsg = NULL; 1503 long int mandb_rowid; 1504 1505 /* 1506 * At the very minimum we want to make sure that we store 1507 * the following data: 1508 * Name, one line description, and the MD5 hash 1509 */ 1510 if (rec->name == NULL || rec->name_desc == NULL || 1511 rec->md5_hash == NULL) { 1512 cleanup(rec); 1513 return -1; 1514 } 1515 1516 /* Write null byte at the end of all the sec_buffs */ 1517 rec->desc.data[rec->desc.offset] = 0; 1518 rec->lib.data[rec->lib.offset] = 0; 1519 rec->env.data[rec->env.offset] = 0; 1520 rec->return_vals.data[rec->return_vals.offset] = 0; 1521 rec->exit_status.data[rec->exit_status.offset] = 0; 1522 rec->files.data[rec->files.offset] = 0; 1523 rec->diagnostics.data[rec->diagnostics.offset] = 0; 1524 rec->errors.data[rec->errors.offset] = 0; 1525 1526 /* 1527 * In case of a mdoc page: (sorry, no better place to put this code) 1528 * parse the comma separated list of names of man pages, 1529 * the first name will be stored in the mandb table, rest will be 1530 * treated as links and put in the mandb_links table. 1531 */ 1532 if (rec->page_type == MDOC) { 1533 char *tmp; 1534 rec->links = estrdup(rec->name); 1535 free(rec->name); 1536 size_t sz = strcspn(rec->links, " \0"); 1537 rec->name = emalloc(sz + 1); 1538 memcpy(rec->name, rec->links, sz); 1539 if(rec->name[sz - 1] == ',') 1540 rec->name[sz - 1] = 0; 1541 else 1542 rec->name[sz] = 0; 1543 while (rec->links[sz] == ' ') 1544 ++sz; 1545 tmp = estrdup(rec->links + sz); 1546 free(rec->links); 1547 rec->links = tmp; 1548 } 1549 1550 /*------------------------ Populate the mandb table---------------------------*/ 1551 sqlstr = "INSERT INTO mandb VALUES (:section, :name, :name_desc, :desc," 1552 " :lib, :return_vals, :env, :files, :exit_status," 1553 " :diagnostics, :errors, :md5_hash, :machine)"; 1554 1555 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1556 if (rc != SQLITE_OK) 1557 goto Out; 1558 1559 idx = sqlite3_bind_parameter_index(stmt, ":name"); 1560 rc = sqlite3_bind_text(stmt, idx, rec->name, -1, NULL); 1561 if (rc != SQLITE_OK) { 1562 sqlite3_finalize(stmt); 1563 goto Out; 1564 } 1565 1566 idx = sqlite3_bind_parameter_index(stmt, ":section"); 1567 rc = sqlite3_bind_text(stmt, idx, rec->section, -1, NULL); 1568 if (rc != SQLITE_OK) { 1569 sqlite3_finalize(stmt); 1570 goto Out; 1571 } 1572 1573 idx = sqlite3_bind_parameter_index(stmt, ":name_desc"); 1574 rc = sqlite3_bind_text(stmt, idx, rec->name_desc, -1, NULL); 1575 if (rc != SQLITE_OK) { 1576 sqlite3_finalize(stmt); 1577 goto Out; 1578 } 1579 1580 idx = sqlite3_bind_parameter_index(stmt, ":desc"); 1581 rc = sqlite3_bind_text(stmt, idx, rec->desc.data, 1582 rec->desc.offset + 1, NULL); 1583 if (rc != SQLITE_OK) { 1584 sqlite3_finalize(stmt); 1585 goto Out; 1586 } 1587 1588 idx = sqlite3_bind_parameter_index(stmt, ":lib"); 1589 rc = sqlite3_bind_text(stmt, idx, rec->lib.data, 1590 rec->lib.offset + 1, NULL); 1591 if (rc != SQLITE_OK) { 1592 sqlite3_finalize(stmt); 1593 goto Out; 1594 } 1595 1596 idx = sqlite3_bind_parameter_index(stmt, ":return_vals"); 1597 rc = sqlite3_bind_text(stmt, idx, rec->return_vals.data, 1598 rec->return_vals.offset + 1, NULL); 1599 if (rc != SQLITE_OK) { 1600 sqlite3_finalize(stmt); 1601 goto Out; 1602 } 1603 1604 idx = sqlite3_bind_parameter_index(stmt, ":env"); 1605 rc = sqlite3_bind_text(stmt, idx, rec->env.data, 1606 rec->env.offset + 1, NULL); 1607 if (rc != SQLITE_OK) { 1608 sqlite3_finalize(stmt); 1609 goto Out; 1610 } 1611 1612 idx = sqlite3_bind_parameter_index(stmt, ":files"); 1613 rc = sqlite3_bind_text(stmt, idx, rec->files.data, 1614 rec->files.offset + 1, NULL); 1615 if (rc != SQLITE_OK) { 1616 sqlite3_finalize(stmt); 1617 goto Out; 1618 } 1619 1620 idx = sqlite3_bind_parameter_index(stmt, ":exit_status"); 1621 rc = sqlite3_bind_text(stmt, idx, rec->exit_status.data, 1622 rec->exit_status.offset + 1, NULL); 1623 if (rc != SQLITE_OK) { 1624 sqlite3_finalize(stmt); 1625 goto Out; 1626 } 1627 1628 idx = sqlite3_bind_parameter_index(stmt, ":diagnostics"); 1629 rc = sqlite3_bind_text(stmt, idx, rec->diagnostics.data, 1630 rec->diagnostics.offset + 1, NULL); 1631 if (rc != SQLITE_OK) { 1632 sqlite3_finalize(stmt); 1633 goto Out; 1634 } 1635 1636 idx = sqlite3_bind_parameter_index(stmt, ":errors"); 1637 rc = sqlite3_bind_text(stmt, idx, rec->errors.data, 1638 rec->errors.offset + 1, NULL); 1639 if (rc != SQLITE_OK) { 1640 sqlite3_finalize(stmt); 1641 goto Out; 1642 } 1643 1644 idx = sqlite3_bind_parameter_index(stmt, ":md5_hash"); 1645 rc = sqlite3_bind_text(stmt, idx, rec->md5_hash, -1, NULL); 1646 if (rc != SQLITE_OK) { 1647 sqlite3_finalize(stmt); 1648 goto Out; 1649 } 1650 1651 idx = sqlite3_bind_parameter_index(stmt, ":machine"); 1652 if (rec->machine) 1653 rc = sqlite3_bind_text(stmt, idx, rec->machine, -1, NULL); 1654 else 1655 rc = sqlite3_bind_null(stmt, idx); 1656 if (rc != SQLITE_OK) { 1657 sqlite3_finalize(stmt); 1658 goto Out; 1659 } 1660 1661 rc = sqlite3_step(stmt); 1662 if (rc != SQLITE_DONE) { 1663 sqlite3_finalize(stmt); 1664 goto Out; 1665 } 1666 1667 sqlite3_finalize(stmt); 1668 1669 /* Get the row id of the last inserted row */ 1670 mandb_rowid = sqlite3_last_insert_rowid(db); 1671 1672 /*------------------------Populate the mandb_meta table-----------------------*/ 1673 sqlstr = "INSERT INTO mandb_meta VALUES (:device, :inode, :mtime," 1674 " :file, :md5_hash, :id)"; 1675 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1676 if (rc != SQLITE_OK) 1677 goto Out; 1678 1679 idx = sqlite3_bind_parameter_index(stmt, ":device"); 1680 rc = sqlite3_bind_int64(stmt, idx, rec->device); 1681 if (rc != SQLITE_OK) { 1682 sqlite3_finalize(stmt); 1683 goto Out; 1684 } 1685 1686 idx = sqlite3_bind_parameter_index(stmt, ":inode"); 1687 rc = sqlite3_bind_int64(stmt, idx, rec->inode); 1688 if (rc != SQLITE_OK) { 1689 sqlite3_finalize(stmt); 1690 goto Out; 1691 } 1692 1693 idx = sqlite3_bind_parameter_index(stmt, ":mtime"); 1694 rc = sqlite3_bind_int64(stmt, idx, rec->mtime); 1695 if (rc != SQLITE_OK) { 1696 sqlite3_finalize(stmt); 1697 goto Out; 1698 } 1699 1700 idx = sqlite3_bind_parameter_index(stmt, ":file"); 1701 rc = sqlite3_bind_text(stmt, idx, rec->file_path, -1, NULL); 1702 if (rc != SQLITE_OK) { 1703 sqlite3_finalize(stmt); 1704 goto Out; 1705 } 1706 1707 idx = sqlite3_bind_parameter_index(stmt, ":md5_hash"); 1708 rc = sqlite3_bind_text(stmt, idx, rec->md5_hash, -1, NULL); 1709 if (rc != SQLITE_OK) { 1710 sqlite3_finalize(stmt); 1711 goto Out; 1712 } 1713 1714 idx = sqlite3_bind_parameter_index(stmt, ":id"); 1715 rc = sqlite3_bind_int64(stmt, idx, mandb_rowid); 1716 if (rc != SQLITE_OK) { 1717 sqlite3_finalize(stmt); 1718 goto Out; 1719 } 1720 1721 rc = sqlite3_step(stmt); 1722 sqlite3_finalize(stmt); 1723 if (rc == SQLITE_CONSTRAINT_UNIQUE) { 1724 /* The *most* probable reason for reaching here is that 1725 * the UNIQUE contraint on the file column of the mandb_meta 1726 * table was violated. 1727 * This can happen when a file was updated/modified. 1728 * To fix this we need to do two things: 1729 * 1. Delete the row for the older version of this file 1730 * from mandb table. 1731 * 2. Run an UPDATE query to update the row for this file 1732 * in the mandb_meta table. 1733 */ 1734 warnx("Trying to update index for %s", rec->file_path); 1735 char *sql = sqlite3_mprintf("DELETE FROM mandb " 1736 "WHERE rowid = (SELECT id" 1737 " FROM mandb_meta" 1738 " WHERE file = %Q)", 1739 rec->file_path); 1740 sqlite3_exec(db, sql, NULL, NULL, &errmsg); 1741 sqlite3_free(sql); 1742 if (errmsg != NULL) { 1743 if (mflags.verbosity) 1744 warnx("%s", errmsg); 1745 free(errmsg); 1746 } 1747 sqlstr = "UPDATE mandb_meta SET device = :device," 1748 " inode = :inode, mtime = :mtime, id = :id," 1749 " md5_hash = :md5 WHERE file = :file"; 1750 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1751 if (rc != SQLITE_OK) { 1752 if (mflags.verbosity) 1753 warnx("Update failed with error: %s", 1754 sqlite3_errmsg(db)); 1755 close_db(db); 1756 cleanup(rec); 1757 errx(EXIT_FAILURE, 1758 "Consider running makemandb with -f option"); 1759 } 1760 1761 idx = sqlite3_bind_parameter_index(stmt, ":device"); 1762 sqlite3_bind_int64(stmt, idx, rec->device); 1763 idx = sqlite3_bind_parameter_index(stmt, ":inode"); 1764 sqlite3_bind_int64(stmt, idx, rec->inode); 1765 idx = sqlite3_bind_parameter_index(stmt, ":mtime"); 1766 sqlite3_bind_int64(stmt, idx, rec->mtime); 1767 idx = sqlite3_bind_parameter_index(stmt, ":id"); 1768 sqlite3_bind_int64(stmt, idx, mandb_rowid); 1769 idx = sqlite3_bind_parameter_index(stmt, ":md5"); 1770 sqlite3_bind_text(stmt, idx, rec->md5_hash, -1, NULL); 1771 idx = sqlite3_bind_parameter_index(stmt, ":file"); 1772 sqlite3_bind_text(stmt, idx, rec->file_path, -1, NULL); 1773 rc = sqlite3_step(stmt); 1774 sqlite3_finalize(stmt); 1775 1776 if (rc != SQLITE_DONE) { 1777 if (mflags.verbosity) 1778 warnx("%s", sqlite3_errmsg(db)); 1779 close_db(db); 1780 cleanup(rec); 1781 errx(EXIT_FAILURE, 1782 "Consider running makemandb with -f option"); 1783 } 1784 } else if (rc != SQLITE_DONE) { 1785 /* Otherwise make this error fatal */ 1786 warnx("Failed at %s\n%s", rec->file_path, sqlite3_errmsg(db)); 1787 cleanup(rec); 1788 close_db(db); 1789 exit(EXIT_FAILURE); 1790 } 1791 1792 /*------------------------ Populate the mandb_links table---------------------*/ 1793 char *str = NULL; 1794 char *links; 1795 if (rec->links && strlen(rec->links)) { 1796 links = rec->links; 1797 for(ln = strtok(links, " "); ln; ln = strtok(NULL, " ")) { 1798 if (ln[0] == ',') 1799 ln++; 1800 if(ln[strlen(ln) - 1] == ',') 1801 ln[strlen(ln) - 1] = 0; 1802 1803 str = sqlite3_mprintf("INSERT INTO mandb_links" 1804 " VALUES (%Q, %Q, %Q, %Q, %Q)", 1805 ln, rec->name, rec->section, 1806 rec->machine, rec->md5_hash); 1807 sqlite3_exec(db, str, NULL, NULL, &errmsg); 1808 sqlite3_free(str); 1809 if (errmsg != NULL) { 1810 warnx("%s", errmsg); 1811 cleanup(rec); 1812 free(errmsg); 1813 return -1; 1814 } 1815 } 1816 } 1817 1818 cleanup(rec); 1819 return 0; 1820 1821 Out: 1822 if (mflags.verbosity) 1823 warnx("%s", sqlite3_errmsg(db)); 1824 cleanup(rec); 1825 return -1; 1826 } 1827 1828 /* 1829 * check_md5-- 1830 * Generates the md5 hash of the file and checks if it already doesn't exist 1831 * in the table (passed as the 3rd parameter). 1832 * This function is being used to avoid hardlinks. 1833 * On successful completion it will also set the value of the fourth parameter 1834 * to the md5 hash of the file (computed previously). It is the responsibility 1835 * of the caller to free this buffer. 1836 * Return values: 1837 * -1: If an error occurs somewhere and sets the md5 return buffer to NULL. 1838 * 0: If the md5 hash does not exist in the table. 1839 * 1: If the hash exists in the database. 1840 */ 1841 static int 1842 check_md5(const char *file, sqlite3 *db, const char *table, char **md5sum, 1843 void *buf, size_t buflen) 1844 { 1845 int rc = 0; 1846 int idx = -1; 1847 char *sqlstr = NULL; 1848 sqlite3_stmt *stmt = NULL; 1849 1850 assert(file != NULL); 1851 *md5sum = MD5Data(buf, buflen, NULL); 1852 if (*md5sum == NULL) { 1853 if (mflags.verbosity) 1854 warn("md5 failed: %s", file); 1855 return -1; 1856 } 1857 1858 easprintf(&sqlstr, "SELECT * FROM %s WHERE md5_hash = :md5_hash", 1859 table); 1860 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1861 if (rc != SQLITE_OK) { 1862 free(sqlstr); 1863 free(*md5sum); 1864 *md5sum = NULL; 1865 return -1; 1866 } 1867 1868 idx = sqlite3_bind_parameter_index(stmt, ":md5_hash"); 1869 rc = sqlite3_bind_text(stmt, idx, *md5sum, -1, NULL); 1870 if (rc != SQLITE_OK) { 1871 if (mflags.verbosity) 1872 warnx("%s", sqlite3_errmsg(db)); 1873 sqlite3_finalize(stmt); 1874 free(sqlstr); 1875 free(*md5sum); 1876 *md5sum = NULL; 1877 return -1; 1878 } 1879 1880 if (sqlite3_step(stmt) == SQLITE_ROW) { 1881 sqlite3_finalize(stmt); 1882 free(sqlstr); 1883 return 0; 1884 } 1885 1886 sqlite3_finalize(stmt); 1887 free(sqlstr); 1888 return 1; 1889 } 1890 1891 /* Optimize the index for faster search */ 1892 static void 1893 optimize(sqlite3 *db) 1894 { 1895 const char *sqlstr; 1896 char *errmsg = NULL; 1897 1898 if (mflags.verbosity == 2) 1899 printf("Optimizing the database index\n"); 1900 sqlstr = "INSERT INTO mandb(mandb) VALUES (\'optimize\');" 1901 "VACUUM"; 1902 sqlite3_exec(db, sqlstr, NULL, NULL, &errmsg); 1903 if (errmsg != NULL) { 1904 if (mflags.verbosity) 1905 warnx("%s", errmsg); 1906 free(errmsg); 1907 return; 1908 } 1909 } 1910 1911 /* 1912 * cleanup -- 1913 * cleans up the global buffers 1914 */ 1915 static void 1916 cleanup(mandb_rec *rec) 1917 { 1918 rec->desc.offset = 0; 1919 rec->lib.offset = 0; 1920 rec->return_vals.offset = 0; 1921 rec->env.offset = 0; 1922 rec->exit_status.offset = 0; 1923 rec->diagnostics.offset = 0; 1924 rec->errors.offset = 0; 1925 rec->files.offset = 0; 1926 1927 free(rec->machine); 1928 rec->machine = NULL; 1929 1930 free(rec->links); 1931 rec->links = NULL; 1932 1933 free(rec->file_path); 1934 rec->file_path = NULL; 1935 1936 free(rec->name); 1937 rec->name = NULL; 1938 1939 free(rec->name_desc); 1940 rec->name_desc = NULL; 1941 1942 free(rec->md5_hash); 1943 rec->md5_hash = NULL; 1944 1945 free(rec->section); 1946 rec->section = NULL; 1947 } 1948 1949 /* 1950 * init_secbuffs-- 1951 * Sets the value of buflen for all the sec_buff field of rec. And then 1952 * allocate memory to each sec_buff member of rec. 1953 */ 1954 static void 1955 init_secbuffs(mandb_rec *rec) 1956 { 1957 /* 1958 * Some sec_buff might need more memory, for example desc, 1959 * which stores the data of the DESCRIPTION section, 1960 * while some might need very small amount of memory. 1961 * Therefore explicitly setting the value of buflen field for 1962 * each sec_buff. 1963 */ 1964 rec->desc.buflen = 10 * BUFLEN; 1965 rec->desc.data = emalloc(rec->desc.buflen); 1966 rec->desc.offset = 0; 1967 1968 rec->lib.buflen = BUFLEN / 2; 1969 rec->lib.data = emalloc(rec->lib.buflen); 1970 rec->lib.offset = 0; 1971 1972 rec->return_vals.buflen = BUFLEN; 1973 rec->return_vals.data = emalloc(rec->return_vals.buflen); 1974 rec->return_vals.offset = 0; 1975 1976 rec->exit_status.buflen = BUFLEN; 1977 rec->exit_status.data = emalloc(rec->exit_status.buflen); 1978 rec->exit_status.offset = 0; 1979 1980 rec->env.buflen = BUFLEN; 1981 rec->env.data = emalloc(rec->env.buflen); 1982 rec->env.offset = 0; 1983 1984 rec->files.buflen = BUFLEN; 1985 rec->files.data = emalloc(rec->files.buflen); 1986 rec->files.offset = 0; 1987 1988 rec->diagnostics.buflen = BUFLEN; 1989 rec->diagnostics.data = emalloc(rec->diagnostics.buflen); 1990 rec->diagnostics.offset = 0; 1991 1992 rec->errors.buflen = BUFLEN; 1993 rec->errors.data = emalloc(rec->errors.buflen); 1994 rec->errors.offset = 0; 1995 } 1996 1997 /* 1998 * free_secbuffs-- 1999 * This function should be called at the end, when all the pages have been 2000 * parsed. 2001 * It frees the memory allocated to sec_buffs by init_secbuffs in the starting. 2002 */ 2003 static void 2004 free_secbuffs(mandb_rec *rec) 2005 { 2006 free(rec->desc.data); 2007 free(rec->lib.data); 2008 free(rec->return_vals.data); 2009 free(rec->exit_status.data); 2010 free(rec->env.data); 2011 free(rec->files.data); 2012 free(rec->diagnostics.data); 2013 free(rec->errors.data); 2014 } 2015 2016 static void 2017 replace_hyph(char *str) 2018 { 2019 char *iter = str; 2020 while ((iter = strchr(iter, ASCII_HYPH)) != NULL) 2021 *iter = '-'; 2022 2023 iter = str; 2024 while ((iter = strchr(iter, ASCII_NBRSP)) != NULL) 2025 *iter = '-'; 2026 } 2027 2028 static char * 2029 parse_escape(const char *str) 2030 { 2031 const char *backslash, *last_backslash; 2032 char *result, *iter; 2033 size_t len; 2034 2035 assert(str); 2036 2037 last_backslash = str; 2038 backslash = strchr(str, '\\'); 2039 if (backslash == NULL) { 2040 result = estrdup(str); 2041 replace_hyph(result); 2042 return result; 2043 } 2044 2045 result = emalloc(strlen(str) + 1); 2046 iter = result; 2047 2048 do { 2049 len = backslash - last_backslash; 2050 memcpy(iter, last_backslash, len); 2051 iter += len; 2052 if (backslash[1] == '-' || backslash[1] == ' ') { 2053 *iter++ = backslash[1]; 2054 last_backslash = backslash + 2; 2055 backslash = strchr(last_backslash, '\\'); 2056 } else { 2057 ++backslash; 2058 mandoc_escape(&backslash, NULL, NULL); 2059 last_backslash = backslash; 2060 if (backslash == NULL) 2061 break; 2062 backslash = strchr(last_backslash, '\\'); 2063 } 2064 } while (backslash != NULL); 2065 if (last_backslash != NULL) 2066 strcpy(iter, last_backslash); 2067 2068 replace_hyph(result); 2069 return result; 2070 } 2071 2072 /* 2073 * append-- 2074 * Concatenates a space and src at the end of sbuff->data (much like concat in 2075 * apropos-utils.c). 2076 * Rather than reallocating space for writing data, it uses the value of the 2077 * offset field of sec_buff to write new data at the free space left in the 2078 * buffer. 2079 * In case the size of the data to be appended exceeds the number of bytes left 2080 * in the buffer, it reallocates buflen number of bytes and then continues. 2081 * Value of offset field should be adjusted as new data is written. 2082 * 2083 * NOTE: This function does not write the null byte at the end of the buffers, 2084 * write a null byte at the position pointed to by offset before inserting data 2085 * in the db. 2086 */ 2087 static void 2088 append(secbuff *sbuff, const char *src) 2089 { 2090 short flag = 0; 2091 size_t srclen, newlen; 2092 char *temp; 2093 2094 assert(src != NULL); 2095 temp = parse_escape(src); 2096 srclen = strlen(temp); 2097 2098 if (sbuff->data == NULL) { 2099 sbuff->data = emalloc(sbuff->buflen); 2100 sbuff->offset = 0; 2101 } 2102 2103 newlen = sbuff->offset + srclen + 2; 2104 if (newlen >= sbuff->buflen) { 2105 while (sbuff->buflen < newlen) 2106 sbuff->buflen += sbuff->buflen; 2107 sbuff->data = erealloc(sbuff->data, sbuff->buflen); 2108 flag = 1; 2109 } 2110 2111 /* Append a space at the end of the buffer. */ 2112 if (sbuff->offset || flag) 2113 sbuff->data[sbuff->offset++] = ' '; 2114 /* Now, copy src at the end of the buffer. */ 2115 memcpy(sbuff->data + sbuff->offset, temp, srclen); 2116 sbuff->offset += srclen; 2117 free(temp); 2118 } 2119 2120 static void 2121 usage(void) 2122 { 2123 fprintf(stderr, "Usage: %s [-floQqv] [-C path]\n", getprogname()); 2124 exit(1); 2125 } 2126
Indexes created Mon Sep 29 21:09:56 GMT 2025