makemandb.c revision 1.40
1 /* $NetBSD: makemandb.c,v 1.40 2016/07/15 19:41:33 christos 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 1.40 2016/07/15 19:41:33 christos 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 pmdoc_Xr(const struct roff_node *, mandb_rec *); 111 static void pmdoc_Pp(const struct roff_node *, mandb_rec *); 112 static void pmdoc_macro_handler(const struct roff_node *, mandb_rec *, int); 113 static void pman_parse_node(const struct roff_node *, secbuff *); 114 static void pman_parse_name(const struct roff_node *, mandb_rec *); 115 static void pman_sh(const struct roff_node *, mandb_rec *); 116 static void pman_block(const struct roff_node *, mandb_rec *); 117 static void traversedir(const char *, const char *, sqlite3 *, struct mparse *); 118 static void mdoc_parse_section(enum roff_sec, const char *, mandb_rec *); 119 static void man_parse_section(enum man_sec, const struct roff_node *, mandb_rec *); 120 static void build_file_cache(sqlite3 *, const char *, const char *, 121 struct stat *); 122 static void update_db(sqlite3 *, struct mparse *, mandb_rec *); 123 __dead static void usage(void); 124 static void optimize(sqlite3 *); 125 static char *parse_escape(const char *); 126 static void replace_hyph(char *); 127 static makemandb_flags mflags = { .verbosity = 1 }; 128 129 static const proff_nf mdocs[MDOC_MAX + 1] = { 130 NULL, /* Ap */ 131 NULL, /* Dd */ 132 NULL, /* Dt */ 133 NULL, /* Os */ 134 135 pmdoc_Sh, /* Sh */ 136 NULL, /* Ss */ 137 pmdoc_Pp, /* Pp */ 138 NULL, /* D1 */ 139 140 NULL, /* Dl */ 141 NULL, /* Bd */ 142 NULL, /* Ed */ 143 NULL, /* Bl */ 144 145 NULL, /* El */ 146 NULL, /* It */ 147 NULL, /* Ad */ 148 NULL, /* An */ 149 150 NULL, /* Ar */ 151 NULL, /* Cd */ 152 NULL, /* Cm */ 153 NULL, /* Dv */ 154 155 NULL, /* Er */ 156 NULL, /* Ev */ 157 NULL, /* Ex */ 158 NULL, /* Fa */ 159 160 NULL, /* Fd */ 161 NULL, /* Fl */ 162 NULL, /* Fn */ 163 NULL, /* Ft */ 164 165 NULL, /* Ic */ 166 NULL, /* In */ 167 NULL, /* Li */ 168 pmdoc_Nd, /* Nd */ 169 170 pmdoc_Nm, /* Nm */ 171 NULL, /* Op */ 172 NULL, /* Ot */ 173 NULL, /* Pa */ 174 175 NULL, /* Rv */ 176 NULL, /* St */ 177 NULL, /* Va */ 178 NULL, /* Vt */ 179 180 pmdoc_Xr, /* Xr */ 181 NULL, /* %A */ 182 NULL, /* %B */ 183 NULL, /* %D */ 184 185 NULL, /* %I */ 186 NULL, /* %J */ 187 NULL, /* %N */ 188 NULL, /* %O */ 189 190 NULL, /* %P */ 191 NULL, /* %R */ 192 NULL, /* %T */ 193 NULL, /* %V */ 194 195 NULL, /* Ac */ 196 NULL, /* Ao */ 197 NULL, /* Aq */ 198 NULL, /* At */ 199 200 NULL, /* Bc */ 201 NULL, /* Bf */ 202 NULL, /* Bo */ 203 NULL, /* Bq */ 204 205 NULL, /* Bsx */ 206 NULL, /* Bx */ 207 NULL, /* Db */ 208 NULL, /* Dc */ 209 210 NULL, /* Do */ 211 NULL, /* Dq */ 212 NULL, /* Ec */ 213 NULL, /* Ef */ 214 215 NULL, /* Em */ 216 NULL, /* Eo */ 217 NULL, /* Fx */ 218 NULL, /* Ms */ 219 220 NULL, /* No */ 221 NULL, /* Ns */ 222 NULL, /* Nx */ 223 NULL, /* Ox */ 224 225 NULL, /* Pc */ 226 NULL, /* Pf */ 227 NULL, /* Po */ 228 NULL, /* Pq */ 229 230 NULL, /* Qc */ 231 NULL, /* Ql */ 232 NULL, /* Qo */ 233 NULL, /* Qq */ 234 235 NULL, /* Re */ 236 NULL, /* Rs */ 237 NULL, /* Sc */ 238 NULL, /* So */ 239 240 NULL, /* Sq */ 241 NULL, /* Sm */ 242 NULL, /* Sx */ 243 NULL, /* Sy */ 244 245 NULL, /* Tn */ 246 NULL, /* Ux */ 247 NULL, /* Xc */ 248 NULL, /* Xo */ 249 250 NULL, /* Fo */ 251 NULL, /* Fc */ 252 NULL, /* Oo */ 253 NULL, /* Oc */ 254 255 NULL, /* Bk */ 256 NULL, /* Ek */ 257 NULL, /* Bt */ 258 NULL, /* Hf */ 259 260 NULL, /* Fr */ 261 NULL, /* Ud */ 262 NULL, /* Lb */ 263 NULL, /* Lp */ 264 265 NULL, /* Lk */ 266 NULL, /* Mt */ 267 NULL, /* Brq */ 268 NULL, /* Bro */ 269 270 NULL, /* Brc */ 271 NULL, /* %C */ 272 NULL, /* Es */ 273 NULL, /* En */ 274 275 NULL, /* Dx */ 276 NULL, /* %Q */ 277 NULL, /* br */ 278 NULL, /* sp */ 279 280 NULL, /* %U */ 281 NULL, /* Ta */ 282 NULL, /* ll */ 283 NULL, /* text */ 284 }; 285 286 static const proff_nf mans[MAN_MAX] = { 287 NULL, //br 288 NULL, //TH 289 pman_sh, //SH 290 NULL, //SS 291 NULL, //TP 292 NULL, //LP 293 NULL, //PP 294 NULL, //P 295 NULL, //IP 296 NULL, //HP 297 NULL, //SM 298 NULL, //SB 299 NULL, //BI 300 NULL, //IB 301 NULL, //BR 302 NULL, //RB 303 NULL, //R 304 pman_block, //B 305 NULL, //I 306 NULL, //IR 307 NULL, //RI 308 NULL, //sp 309 NULL, //nf 310 NULL, //fi 311 NULL, //RE 312 NULL, //RS 313 NULL, //DT 314 NULL, //UC 315 NULL, //PD 316 NULL, //AT 317 NULL, //in 318 NULL, //ft 319 NULL, //OP 320 NULL, //EX 321 NULL, //EE 322 NULL, //UR 323 NULL, //UE 324 NULL, //ll 325 }; 326 327 328 int 329 main(int argc, char *argv[]) 330 { 331 FILE *file; 332 const char *sqlstr, *manconf = NULL; 333 char *line, *command, *parent; 334 char *errmsg; 335 int ch; 336 struct mparse *mp; 337 sqlite3 *db; 338 ssize_t len; 339 size_t linesize; 340 struct roff_mandb_rec rec; 341 342 while ((ch = getopt(argc, argv, "C:floQqv")) != -1) { 343 switch (ch) { 344 case 'C': 345 manconf = optarg; 346 break; 347 case 'f': 348 mflags.recreate = 1; 349 break; 350 case 'l': 351 mflags.limit = 1; 352 break; 353 case 'o': 354 mflags.optimize = 1; 355 break; 356 case 'Q': 357 mflags.verbosity = 0; 358 break; 359 case 'q': 360 mflags.verbosity = 1; 361 break; 362 case 'v': 363 mflags.verbosity = 2; 364 break; 365 default: 366 usage(); 367 } 368 } 369 370 memset(&rec, 0, sizeof(rec)); 371 372 init_secbuffs(&rec); 373 mchars_alloc(); 374 mp = mparse_alloc(0, MANDOCLEVEL_BADARG, NULL, NULL); 375 376 if (manconf) { 377 char *arg; 378 size_t command_len = shquote(manconf, NULL, 0) + 1; 379 arg = emalloc(command_len); 380 shquote(manconf, arg, command_len); 381 easprintf(&command, "man -p -C %s", arg); 382 free(arg); 383 } else { 384 command = estrdup("man -p"); 385 manconf = MANCONF; 386 } 387 388 if (mflags.recreate) { 389 char *dbp = get_dbpath(manconf); 390 /* No error here, it will fail in init_db in the same call */ 391 if (dbp != NULL) 392 remove(dbp); 393 } 394 395 if ((db = init_db(MANDB_CREATE, manconf)) == NULL) 396 exit(EXIT_FAILURE); 397 398 sqlite3_exec(db, "PRAGMA synchronous = 0", NULL, NULL, &errmsg); 399 if (errmsg != NULL) { 400 warnx("%s", errmsg); 401 free(errmsg); 402 close_db(db); 403 exit(EXIT_FAILURE); 404 } 405 406 sqlite3_exec(db, "ATTACH DATABASE \':memory:\' AS metadb", NULL, NULL, 407 &errmsg); 408 if (errmsg != NULL) { 409 warnx("%s", errmsg); 410 free(errmsg); 411 close_db(db); 412 exit(EXIT_FAILURE); 413 } 414 415 416 /* Call man -p to get the list of man page dirs */ 417 if ((file = popen(command, "r")) == NULL) { 418 close_db(db); 419 err(EXIT_FAILURE, "fopen failed"); 420 } 421 free(command); 422 423 /* Begin the transaction for indexing the pages */ 424 sqlite3_exec(db, "BEGIN", NULL, NULL, &errmsg); 425 if (errmsg != NULL) { 426 warnx("%s", errmsg); 427 free(errmsg); 428 close_db(db); 429 exit(EXIT_FAILURE); 430 } 431 432 sqlstr = "CREATE TABLE metadb.file_cache(device, inode, mtime, parent," 433 " file PRIMARY KEY);" 434 "CREATE UNIQUE INDEX metadb.index_file_cache_dev" 435 " ON file_cache (device, inode)"; 436 437 sqlite3_exec(db, sqlstr, NULL, NULL, &errmsg); 438 if (errmsg != NULL) { 439 warnx("%s", errmsg); 440 free(errmsg); 441 close_db(db); 442 exit(EXIT_FAILURE); 443 } 444 445 if (mflags.verbosity) 446 printf("Building temporary file cache\n"); 447 line = NULL; 448 linesize = 0; 449 while ((len = getline(&line, &linesize, file)) != -1) { 450 /* Replace the new line character at the end of string with '\0' */ 451 line[len - 1] = '\0'; 452 parent = estrdup(line); 453 char *pdir = estrdup(dirname(parent)); 454 free(parent); 455 /* Traverse the man page directories and parse the pages */ 456 traversedir(pdir, line, db, mp); 457 free(pdir); 458 } 459 free(line); 460 461 if (pclose(file) == -1) { 462 close_db(db); 463 cleanup(&rec); 464 free_secbuffs(&rec); 465 err(EXIT_FAILURE, "pclose error"); 466 } 467 468 if (mflags.verbosity) 469 printf("Performing index update\n"); 470 update_db(db, mp, &rec); 471 mparse_free(mp); 472 mchars_free(); 473 free_secbuffs(&rec); 474 475 /* Commit the transaction */ 476 sqlite3_exec(db, "COMMIT", NULL, NULL, &errmsg); 477 if (errmsg != NULL) { 478 warnx("%s", errmsg); 479 free(errmsg); 480 close_db(db); 481 exit(EXIT_FAILURE); 482 } 483 484 if (mflags.optimize) 485 optimize(db); 486 487 close_db(db); 488 return 0; 489 } 490 491 /* 492 * traversedir -- 493 * Traverses the given directory recursively and passes all the man page files 494 * in the way to build_file_cache() 495 */ 496 static void 497 traversedir(const char *parent, const char *file, sqlite3 *db, 498 struct mparse *mp) 499 { 500 struct stat sb; 501 struct dirent *dirp; 502 DIR *dp; 503 char *buf; 504 505 if (stat(file, &sb) < 0) { 506 if (mflags.verbosity) 507 warn("stat failed: %s", file); 508 return; 509 } 510 511 /* If it is a directory, traverse it recursively */ 512 if (S_ISDIR(sb.st_mode)) { 513 if ((dp = opendir(file)) == NULL) { 514 if (mflags.verbosity) 515 warn("opendir error: %s", file); 516 return; 517 } 518 519 while ((dirp = readdir(dp)) != NULL) { 520 /* Avoid . and .. entries in a directory */ 521 if (strncmp(dirp->d_name, ".", 1)) { 522 easprintf(&buf, "%s/%s", file, dirp->d_name); 523 traversedir(parent, buf, db, mp); 524 free(buf); 525 } 526 } 527 closedir(dp); 528 } 529 530 if (!S_ISREG(sb.st_mode) && !S_ISLNK(sb.st_mode)) 531 return; 532 533 if (sb.st_size == 0) { 534 if (mflags.verbosity) 535 warnx("Empty file: %s", file); 536 return; 537 } 538 build_file_cache(db, parent, file, &sb); 539 } 540 541 /* build_file_cache -- 542 * This function generates an md5 hash of the file passed as its 2nd parameter 543 * and stores it in a temporary table file_cache along with the full file path. 544 * This is done to support incremental updation of the database. 545 * The temporary table file_cache is dropped thereafter in the function 546 * update_db(), once the database has been updated. 547 */ 548 static void 549 build_file_cache(sqlite3 *db, const char *parent, const char *file, 550 struct stat *sb) 551 { 552 const char *sqlstr; 553 sqlite3_stmt *stmt = NULL; 554 int rc, idx; 555 assert(file != NULL); 556 dev_t device_cache = sb->st_dev; 557 ino_t inode_cache = sb->st_ino; 558 time_t mtime_cache = sb->st_mtime; 559 560 sqlstr = "INSERT INTO metadb.file_cache VALUES (:device, :inode," 561 " :mtime, :parent, :file)"; 562 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 563 if (rc != SQLITE_OK) { 564 if (mflags.verbosity) 565 warnx("%s", sqlite3_errmsg(db)); 566 return; 567 } 568 569 idx = sqlite3_bind_parameter_index(stmt, ":device"); 570 rc = sqlite3_bind_int64(stmt, idx, device_cache); 571 if (rc != SQLITE_OK) { 572 if (mflags.verbosity) 573 warnx("%s", sqlite3_errmsg(db)); 574 sqlite3_finalize(stmt); 575 return; 576 } 577 578 idx = sqlite3_bind_parameter_index(stmt, ":inode"); 579 rc = sqlite3_bind_int64(stmt, idx, inode_cache); 580 if (rc != SQLITE_OK) { 581 if (mflags.verbosity) 582 warnx("%s", sqlite3_errmsg(db)); 583 sqlite3_finalize(stmt); 584 return; 585 } 586 587 idx = sqlite3_bind_parameter_index(stmt, ":mtime"); 588 rc = sqlite3_bind_int64(stmt, idx, mtime_cache); 589 if (rc != SQLITE_OK) { 590 if (mflags.verbosity) 591 warnx("%s", sqlite3_errmsg(db)); 592 sqlite3_finalize(stmt); 593 return; 594 } 595 596 idx = sqlite3_bind_parameter_index(stmt, ":parent"); 597 rc = sqlite3_bind_text(stmt, idx, parent, -1, NULL); 598 if (rc != SQLITE_OK) { 599 if (mflags.verbosity) 600 warnx("%s", sqlite3_errmsg(db)); 601 sqlite3_finalize(stmt); 602 return; 603 } 604 605 idx = sqlite3_bind_parameter_index(stmt, ":file"); 606 rc = sqlite3_bind_text(stmt, idx, file, -1, NULL); 607 if (rc != SQLITE_OK) { 608 if (mflags.verbosity) 609 warnx("%s", sqlite3_errmsg(db)); 610 sqlite3_finalize(stmt); 611 return; 612 } 613 614 sqlite3_step(stmt); 615 sqlite3_finalize(stmt); 616 } 617 618 static void 619 update_existing_entry(sqlite3 *db, const char *file, const char *hash, 620 mandb_rec *rec, int *new_count, int *link_count, int *err_count) 621 { 622 int update_count, rc, idx; 623 const char *inner_sqlstr; 624 sqlite3_stmt *inner_stmt; 625 626 update_count = sqlite3_total_changes(db); 627 inner_sqlstr = "UPDATE mandb_meta SET device = :device," 628 " inode = :inode, mtime = :mtime WHERE" 629 " md5_hash = :md5 AND file = :file AND" 630 " (device <> :device2 OR inode <> " 631 " :inode2 OR mtime <> :mtime2)"; 632 rc = sqlite3_prepare_v2(db, inner_sqlstr, -1, &inner_stmt, NULL); 633 if (rc != SQLITE_OK) { 634 if (mflags.verbosity) 635 warnx("%s", sqlite3_errmsg(db)); 636 return; 637 } 638 idx = sqlite3_bind_parameter_index(inner_stmt, ":device"); 639 sqlite3_bind_int64(inner_stmt, idx, rec->device); 640 idx = sqlite3_bind_parameter_index(inner_stmt, ":inode"); 641 sqlite3_bind_int64(inner_stmt, idx, rec->inode); 642 idx = sqlite3_bind_parameter_index(inner_stmt, ":mtime"); 643 sqlite3_bind_int64(inner_stmt, idx, rec->mtime); 644 idx = sqlite3_bind_parameter_index(inner_stmt, ":md5"); 645 sqlite3_bind_text(inner_stmt, idx, hash, -1, NULL); 646 idx = sqlite3_bind_parameter_index(inner_stmt, ":file"); 647 sqlite3_bind_text(inner_stmt, idx, file, -1, NULL); 648 idx = sqlite3_bind_parameter_index(inner_stmt, ":device2"); 649 sqlite3_bind_int64(inner_stmt, idx, rec->device); 650 idx = sqlite3_bind_parameter_index(inner_stmt, ":inode2"); 651 sqlite3_bind_int64(inner_stmt, idx, rec->inode); 652 idx = sqlite3_bind_parameter_index(inner_stmt, ":mtime2"); 653 sqlite3_bind_int64(inner_stmt, idx, rec->mtime); 654 655 rc = sqlite3_step(inner_stmt); 656 if (rc == SQLITE_DONE) { 657 /* Check if an update has been performed. */ 658 if (update_count != sqlite3_total_changes(db)) { 659 if (mflags.verbosity == 2) 660 printf("Updated %s\n", file); 661 (*new_count)++; 662 } else { 663 /* Otherwise it was a hardlink. */ 664 (*link_count)++; 665 } 666 } else { 667 if (mflags.verbosity == 2) 668 warnx("Could not update the meta data for %s", file); 669 (*err_count)++; 670 } 671 sqlite3_finalize(inner_stmt); 672 } 673 674 /* read_and_decompress -- 675 * Reads the given file into memory. If it is compressed, decompress 676 * it before returning to the caller. 677 */ 678 static int 679 read_and_decompress(const char *file, void **bufp, size_t *len) 680 { 681 size_t off; 682 ssize_t r; 683 struct archive *a; 684 struct archive_entry *ae; 685 char *buf; 686 687 if ((a = archive_read_new()) == NULL) 688 errx(EXIT_FAILURE, "memory allocation failed"); 689 690 *bufp = NULL; 691 if (archive_read_support_compression_all(a) != ARCHIVE_OK || 692 archive_read_support_format_raw(a) != ARCHIVE_OK || 693 archive_read_open_filename(a, file, 65536) != ARCHIVE_OK || 694 archive_read_next_header(a, &ae) != ARCHIVE_OK) 695 goto archive_error; 696 *len = 65536; 697 buf = emalloc(*len); 698 off = 0; 699 for (;;) { 700 r = archive_read_data(a, buf + off, *len - off); 701 if (r == ARCHIVE_OK) { 702 archive_read_finish(a); 703 *bufp = buf; 704 *len = off; 705 return 0; 706 } 707 if (r <= 0) { 708 free(buf); 709 break; 710 } 711 off += r; 712 if (off == *len) { 713 *len *= 2; 714 if (*len < off) { 715 if (mflags.verbosity) 716 warnx("File too large: %s", file); 717 free(buf); 718 archive_read_finish(a); 719 return -1; 720 } 721 buf = erealloc(buf, *len); 722 } 723 } 724 725 archive_error: 726 warnx("Error while reading `%s': %s", file, archive_error_string(a)); 727 archive_read_finish(a); 728 return -1; 729 } 730 731 /* update_db -- 732 * Does an incremental updation of the database by checking the file_cache. 733 * It parses and adds the pages which are present in file_cache, 734 * but not in the database. 735 * It also removes the pages which are present in the databse, 736 * but not in the file_cache. 737 */ 738 static void 739 update_db(sqlite3 *db, struct mparse *mp, mandb_rec *rec) 740 { 741 const char *sqlstr; 742 sqlite3_stmt *stmt = NULL; 743 char *file; 744 char *parent; 745 char *errmsg = NULL; 746 char *md5sum; 747 void *buf; 748 size_t buflen; 749 struct sql_row { 750 struct sql_row *next; 751 dev_t device; 752 ino_t inode; 753 time_t mtime; 754 char *parent; 755 char *file; 756 } *rows, *row; 757 int new_count = 0; /* Counter for newly indexed/updated pages */ 758 int total_count = 0; /* Counter for total number of pages */ 759 int err_count = 0; /* Counter for number of failed pages */ 760 int link_count = 0; /* Counter for number of hard/sym links */ 761 int md5_status; 762 int rc; 763 764 sqlstr = "SELECT device, inode, mtime, parent, file" 765 " FROM metadb.file_cache fc" 766 " WHERE NOT EXISTS(SELECT 1 FROM mandb_meta WHERE" 767 " device = fc.device AND inode = fc.inode AND " 768 " mtime = fc.mtime AND file = fc.file)"; 769 770 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 771 if (rc != SQLITE_OK) { 772 if (mflags.verbosity) 773 warnx("%s", sqlite3_errmsg(db)); 774 close_db(db); 775 errx(EXIT_FAILURE, "Could not query file cache"); 776 } 777 778 buf = NULL; 779 rows = NULL; 780 while (sqlite3_step(stmt) == SQLITE_ROW) { 781 row = emalloc(sizeof(struct sql_row)); 782 row->device = sqlite3_column_int64(stmt, 0); 783 row->inode = sqlite3_column_int64(stmt, 1); 784 row->mtime = sqlite3_column_int64(stmt, 2); 785 row->parent = estrdup((const char *) sqlite3_column_text(stmt, 3)); 786 row->file = estrdup((const char *) sqlite3_column_text(stmt, 4)); 787 row->next = rows; 788 rows = row; 789 total_count++; 790 } 791 sqlite3_finalize(stmt); 792 793 for ( ; rows != NULL; free(parent), free(file), free(buf)) { 794 row = rows; 795 rows = rows->next; 796 797 rec->device = row->device; 798 rec->inode = row->inode; 799 rec->mtime = row->mtime; 800 parent = row->parent; 801 file = row->file; 802 free(row); 803 804 if (read_and_decompress(file, &buf, &buflen)) { 805 err_count++; 806 continue; 807 } 808 md5_status = check_md5(file, db, "mandb_meta", &md5sum, buf, 809 buflen); 810 assert(md5sum != NULL); 811 if (md5_status == -1) { 812 if (mflags.verbosity) 813 warnx("An error occurred in checking md5 value" 814 " for file %s", file); 815 err_count++; 816 continue; 817 } 818 819 if (md5_status == 0) { 820 /* 821 * The MD5 hash is already present in the database, 822 * so simply update the metadata, ignoring symlinks. 823 */ 824 struct stat sb; 825 stat(file, &sb); 826 if (S_ISLNK(sb.st_mode)) { 827 free(md5sum); 828 link_count++; 829 continue; 830 } 831 update_existing_entry(db, file, md5sum, rec, 832 &new_count, &link_count, &err_count); 833 free(md5sum); 834 continue; 835 } 836 837 if (md5_status == 1) { 838 /* 839 * The MD5 hash was not present in the database. 840 * This means is either a new file or an updated file. 841 * We should go ahead with parsing. 842 */ 843 if (chdir(parent) == -1) { 844 if (mflags.verbosity) 845 warn("chdir failed for `%s', could " 846 "not index `%s'", parent, file); 847 err_count++; 848 free(md5sum); 849 continue; 850 } 851 852 if (mflags.verbosity == 2) 853 printf("Parsing: %s\n", file); 854 rec->md5_hash = md5sum; 855 rec->file_path = estrdup(file); 856 // file_path is freed by insert_into_db itself. 857 begin_parse(file, mp, rec, buf, buflen); 858 if (insert_into_db(db, rec) < 0) { 859 if (mflags.verbosity) 860 warnx("Error in indexing `%s'", file); 861 err_count++; 862 } else { 863 new_count++; 864 } 865 } 866 } 867 868 if (mflags.verbosity == 2) { 869 printf("Total Number of new or updated pages encountered = %d\n" 870 "Total number of (hard or symbolic) links found = %d\n" 871 "Total number of pages that were successfully" 872 " indexed/updated = %d\n" 873 "Total number of pages that could not be indexed" 874 " due to errors = %d\n", 875 total_count - link_count, link_count, new_count, err_count); 876 } 877 878 if (mflags.recreate) 879 return; 880 881 if (mflags.verbosity == 2) 882 printf("Deleting stale index entries\n"); 883 884 sqlstr = "DELETE FROM mandb_meta WHERE file NOT IN" 885 " (SELECT file FROM metadb.file_cache);" 886 "DELETE FROM mandb_links WHERE md5_hash NOT IN" 887 " (SELECT md5_hash from mandb_meta);" 888 "DROP TABLE metadb.file_cache;" 889 "DELETE FROM mandb WHERE rowid NOT IN" 890 " (SELECT id FROM mandb_meta);"; 891 892 sqlite3_exec(db, sqlstr, NULL, NULL, &errmsg); 893 if (errmsg != NULL) { 894 warnx("Removing old entries failed: %s", errmsg); 895 warnx("Please rebuild database from scratch with -f."); 896 free(errmsg); 897 return; 898 } 899 } 900 901 /* 902 * begin_parse -- 903 * parses the man page using libmandoc 904 */ 905 static void 906 begin_parse(const char *file, struct mparse *mp, mandb_rec *rec, 907 const void *buf, size_t len) 908 { 909 struct roff_man *roff; 910 mparse_reset(mp); 911 912 rec->xr_found = 0; 913 914 if (mparse_readmem(mp, buf, len, file) >= MANDOCLEVEL_BADARG) { 915 /* Printing this warning at verbosity level 2 916 * because some packages from pkgsrc might trigger several 917 * of such warnings. 918 */ 919 if (mflags.verbosity == 2) 920 warnx("%s: Parse failure", file); 921 return; 922 } 923 924 mparse_result(mp, &roff, NULL); 925 if (roff == NULL) { 926 if (mflags.verbosity == 2) 927 warnx("Not a roff(7) page"); 928 return; 929 } 930 931 set_machine(roff, rec); 932 set_section(roff, rec); 933 if (roff->macroset == MACROSET_MDOC) { 934 rec->page_type = MDOC; 935 proff_node(roff->first->child, rec, mdocs); 936 } else if (roff->macroset == MACROSET_MAN) { 937 rec->page_type = MAN; 938 proff_node(roff->first->child, rec, mans); 939 } else 940 warnx("Unknown macroset %d", roff->macroset); 941 } 942 943 /* 944 * set_section -- 945 * Extracts the section number and normalizes it to only the numeric part 946 * (Which should be the first character of the string). 947 */ 948 static void 949 set_section(const struct roff_man *rm, mandb_rec *rec) 950 { 951 if (!rm) 952 return; 953 const struct roff_meta *rm_meta = &rm->meta; 954 const char *s = rm_meta->msec == NULL ? "?" : rm_meta->msec; 955 easprintf(&rec->section, "%s", s); 956 if (rec->section[0] == '?' && mflags.verbosity == 2) 957 warnx("%s: Missing section number", rec->file_path); 958 } 959 960 /* 961 * get_machine -- 962 * Extracts the machine architecture information if available. 963 */ 964 static void 965 set_machine(const struct roff_man *rm, mandb_rec *rec) 966 { 967 if (rm == NULL) 968 return; 969 const struct roff_meta *rm_meta = &rm->meta; 970 const char *a = rm_meta->arch == NULL ? "?" : rm_meta->arch; 971 rec->machine = estrdup(a); 972 } 973 974 /* 975 * pmdoc_Nm -- 976 * Extracts the Name of the manual page from the .Nm macro 977 */ 978 static void 979 pmdoc_Nm(const struct roff_node *n, mandb_rec *rec) 980 { 981 if (n->sec != SEC_NAME) 982 return; 983 984 for (n = n->child; n; n = n->next) { 985 if (n->type == ROFFT_TEXT) { 986 char *escaped_name = parse_escape(n->string); 987 concat(&rec->name, escaped_name); 988 free(escaped_name); 989 } 990 } 991 } 992 993 /* 994 * pmdoc_Nd -- 995 * Extracts the one line description of the man page from the .Nd macro 996 */ 997 static void 998 pmdoc_Nd(const struct roff_node *n, mandb_rec *rec) 999 { 1000 char *buf = NULL; 1001 char *name; 1002 char *nd_text; 1003 1004 if (n == NULL || (n->type != ROFFT_TEXT && n->tok == MDOC_MAX)) 1005 return; 1006 1007 if (n->type == ROFFT_TEXT) { 1008 if (rec->xr_found && n->next) { 1009 /* 1010 * An Xr macro was seen previously, so parse this 1011 * and the next node, as "Name(Section)". 1012 */ 1013 name = n->string; 1014 n = n->next; 1015 assert(n->type == ROFFT_TEXT); 1016 easprintf(&buf, "%s(%s)", name, n->string); 1017 concat(&rec->name_desc, buf); 1018 free(buf); 1019 } else { 1020 nd_text = parse_escape(n->string); 1021 concat(&rec->name_desc, nd_text); 1022 free(nd_text); 1023 } 1024 rec->xr_found = 0; 1025 } else if (mdocs[n->tok] == pmdoc_Xr) { 1026 /* Remember that we have encountered an Xr macro */ 1027 rec->xr_found = 1; 1028 } 1029 1030 if (n->child) 1031 pmdoc_Nd(n->child, rec); 1032 1033 if(n->next) 1034 pmdoc_Nd(n->next, rec); 1035 } 1036 1037 /* 1038 * pmdoc_macro_handler-- 1039 * This function is a single point of handling all the special macros that we 1040 * want to handle especially. For example the .Xr macro for properly parsing 1041 * the referenced page name along with the section number, or the .Pp macro 1042 * for adding a new line whenever we encounter it. 1043 */ 1044 static void 1045 pmdoc_macro_handler(const struct roff_node *n, mandb_rec *rec, int doct) 1046 { 1047 const struct roff_node *sn; 1048 assert(n); 1049 1050 switch (doct) { 1051 /* Parse the man page references. 1052 * Basically the .Xr macros are used like: 1053 * .Xr ls 1 1054 * and formatted like this: 1055 * ls(1) 1056 * Prepare a buffer to format the data like the above example and call 1057 * pmdoc_parse_section to append it. 1058 */ 1059 case MDOC_Xr: 1060 n = n->child; 1061 while (n->type != ROFFT_TEXT && n->next) 1062 n = n->next; 1063 1064 if (n && n->type != ROFFT_TEXT) 1065 return; 1066 sn = n; 1067 if (n->next) 1068 n = n->next; 1069 1070 while (n->type != ROFFT_TEXT && n->next) 1071 n = n->next; 1072 1073 if (n && n->type == ROFFT_TEXT) { 1074 char *buf; 1075 easprintf(&buf, "%s(%s)", sn->string, n->string); 1076 mdoc_parse_section(n->sec, buf, rec); 1077 free(buf); 1078 } 1079 1080 break; 1081 1082 /* Parse the .Pp macro to add a new line */ 1083 case MDOC_Pp: 1084 if (n->type == ROFFT_TEXT) 1085 mdoc_parse_section(n->sec, "\n", rec); 1086 break; 1087 default: 1088 break; 1089 } 1090 1091 } 1092 1093 /* 1094 * pmdoc_Xr, pmdoc_Pp-- 1095 * Empty stubs. 1096 * The parser calls these functions each time it encounters 1097 * a .Xr or .Pp macro. We are parsing all the data from 1098 * the pmdoc_Sh function, so don't do anything here. 1099 * (See if else blocks in pmdoc_Sh.) 1100 */ 1101 static void 1102 pmdoc_Xr(const struct roff_node *n, mandb_rec *rec) 1103 { 1104 } 1105 1106 static void 1107 pmdoc_Pp(const struct roff_node *n, mandb_rec *rec) 1108 { 1109 } 1110 1111 /* 1112 * pmdoc_Sh -- 1113 * Called when a .Sh macro is encountered and loops through its body, calling 1114 * mdoc_parse_section to append the data to the section specific buffer. 1115 * Two special macros which may occur inside the body of Sh are .Nm and .Xr and 1116 * they need special handling, thus the separate if branches for them. 1117 */ 1118 static void 1119 pmdoc_Sh(const struct roff_node *n, mandb_rec *rec) 1120 { 1121 if (n == NULL || (n->type != ROFFT_TEXT && n->tok == MDOC_MAX)) 1122 return; 1123 int xr_found = 0; 1124 1125 if (n->type == ROFFT_TEXT) { 1126 mdoc_parse_section(n->sec, n->string, rec); 1127 } else if (mdocs[n->tok] == pmdoc_Nm && rec->name != NULL) { 1128 /* 1129 * When encountering a .Nm macro, substitute it 1130 * with its previously cached value of the argument. 1131 */ 1132 mdoc_parse_section(n->sec, rec->name, rec); 1133 } else if (mdocs[n->tok] == pmdoc_Xr) { 1134 /* 1135 * When encountering other inline macros, 1136 * call pmdoc_macro_handler. 1137 */ 1138 pmdoc_macro_handler(n, rec, MDOC_Xr); 1139 xr_found = 1; 1140 } else if (mdocs[n->tok] == pmdoc_Pp) { 1141 pmdoc_macro_handler(n, rec, MDOC_Pp); 1142 } 1143 1144 /* 1145 * If an Xr macro was encountered then the child node has 1146 * already been explored by pmdoc_macro_handler. 1147 */ 1148 if (xr_found == 0) 1149 pmdoc_Sh(n->child, rec); 1150 pmdoc_Sh(n->next, rec); 1151 } 1152 1153 /* 1154 * mdoc_parse_section-- 1155 * Utility function for parsing sections of the mdoc type pages. 1156 * Takes two params: 1157 * 1. sec is an enum which indicates the section in which we are present 1158 * 2. string is the string which we need to append to the secbuff for this 1159 * particular section. 1160 * The function appends string to the global section buffer and returns. 1161 */ 1162 static void 1163 mdoc_parse_section(enum roff_sec sec, const char *string, mandb_rec *rec) 1164 { 1165 /* 1166 * If the user specified the 'l' flag, then parse and store only the 1167 * NAME section. Ignore the rest. 1168 */ 1169 if (mflags.limit) 1170 return; 1171 1172 switch (sec) { 1173 case SEC_LIBRARY: 1174 append(&rec->lib, string); 1175 break; 1176 case SEC_RETURN_VALUES: 1177 append(&rec->return_vals, string); 1178 break; 1179 case SEC_ENVIRONMENT: 1180 append(&rec->env, string); 1181 break; 1182 case SEC_FILES: 1183 append(&rec->files, string); 1184 break; 1185 case SEC_EXIT_STATUS: 1186 append(&rec->exit_status, string); 1187 break; 1188 case SEC_DIAGNOSTICS: 1189 append(&rec->diagnostics, string); 1190 break; 1191 case SEC_ERRORS: 1192 append(&rec->errors, string); 1193 break; 1194 case SEC_NAME: 1195 case SEC_SYNOPSIS: 1196 case SEC_EXAMPLES: 1197 case SEC_STANDARDS: 1198 case SEC_HISTORY: 1199 case SEC_AUTHORS: 1200 case SEC_BUGS: 1201 break; 1202 default: 1203 append(&rec->desc, string); 1204 break; 1205 } 1206 } 1207 1208 static void 1209 proff_node(const struct roff_node *n, mandb_rec *rec, const proff_nf *func) 1210 { 1211 if (n == NULL) 1212 return; 1213 1214 switch (n->type) { 1215 case (ROFFT_BODY): 1216 /* FALLTHROUGH */ 1217 case (ROFFT_BLOCK): 1218 /* FALLTHROUGH */ 1219 case (ROFFT_ELEM): 1220 if (func[n->tok] != NULL) 1221 (*func[n->tok])(n, rec); 1222 break; 1223 default: 1224 break; 1225 } 1226 1227 proff_node(n->child, rec, func); 1228 proff_node(n->next, rec, func); 1229 } 1230 1231 /* 1232 * pman_parse_name -- 1233 * Parses the NAME section and puts the complete content in the name_desc 1234 * variable. 1235 */ 1236 static void 1237 pman_parse_name(const struct roff_node *n, mandb_rec *rec) 1238 { 1239 if (n == NULL) 1240 return; 1241 1242 if (n->type == ROFFT_TEXT) { 1243 char *tmp = parse_escape(n->string); 1244 concat(&rec->name_desc, tmp); 1245 free(tmp); 1246 } 1247 1248 if (n->child) 1249 pman_parse_name(n->child, rec); 1250 1251 if(n->next) 1252 pman_parse_name(n->next, rec); 1253 } 1254 1255 /* 1256 * A stub function to be able to parse the macros like .B embedded inside 1257 * a section. 1258 */ 1259 static void 1260 pman_block(const struct roff_node *n, mandb_rec *rec) 1261 { 1262 } 1263 1264 /* 1265 * pman_sh -- 1266 * This function does one of the two things: 1267 * 1. If the present section is NAME, then it will: 1268 * (a) Extract the name of the page (in case of multiple comma separated 1269 * names, it will pick up the first one). 1270 * (b) Build a space spearated list of all the symlinks/hardlinks to 1271 * this page and store in the buffer 'links'. These are extracted from 1272 * the comma separated list of names in the NAME section as well. 1273 * (c) Move on to the one line description section, which is after the list 1274 * of names in the NAME section. 1275 * 2. Otherwise, it will check the section name and call the man_parse_section 1276 * function, passing the enum corresponding to that section. 1277 */ 1278 static void 1279 pman_sh(const struct roff_node *n, mandb_rec *rec) 1280 { 1281 static const struct { 1282 enum man_sec section; 1283 const char *header; 1284 } mapping[] = { 1285 { MANSEC_DESCRIPTION, "DESCRIPTION" }, 1286 { MANSEC_SYNOPSIS, "SYNOPSIS" }, 1287 { MANSEC_LIBRARY, "LIBRARY" }, 1288 { MANSEC_ERRORS, "ERRORS" }, 1289 { MANSEC_FILES, "FILES" }, 1290 { MANSEC_RETURN_VALUES, "RETURN VALUE" }, 1291 { MANSEC_RETURN_VALUES, "RETURN VALUES" }, 1292 { MANSEC_EXIT_STATUS, "EXIT STATUS" }, 1293 { MANSEC_EXAMPLES, "EXAMPLES" }, 1294 { MANSEC_EXAMPLES, "EXAMPLE" }, 1295 { MANSEC_STANDARDS, "STANDARDS" }, 1296 { MANSEC_HISTORY, "HISTORY" }, 1297 { MANSEC_BUGS, "BUGS" }, 1298 { MANSEC_AUTHORS, "AUTHORS" }, 1299 { MANSEC_COPYRIGHT, "COPYRIGHT" }, 1300 }; 1301 const struct roff_node *head; 1302 char *name_desc; 1303 size_t sz; 1304 size_t i; 1305 1306 if ((head = n->parent->head) == NULL || (head = head->child) == NULL || 1307 head->type != ROFFT_TEXT) 1308 return; 1309 1310 /* 1311 * Check if this section should be extracted and 1312 * where it should be stored. Handled the trival cases first. 1313 */ 1314 for (i = 0; i < sizeof(mapping) / sizeof(mapping[0]); ++i) { 1315 if (strcmp(head->string, mapping[i].header) == 0) { 1316 man_parse_section(mapping[i].section, n, rec); 1317 return; 1318 } 1319 } 1320 1321 if (strcmp(head->string, "NAME") == 0) { 1322 /* 1323 * We are in the NAME section. 1324 * pman_parse_name will put the complete content in name_desc. 1325 */ 1326 pman_parse_name(n, rec); 1327 1328 name_desc = rec->name_desc; 1329 if (name_desc == NULL) 1330 return; 1331 1332 /* Remove any leading spaces. */ 1333 while (name_desc[0] == ' ') 1334 name_desc++; 1335 1336 /* If the line begins with a "\&", avoid those */ 1337 if (name_desc[0] == '\\' && name_desc[1] == '&') 1338 name_desc += 2; 1339 1340 /* Now name_desc should be left with a comma-space 1341 * separated list of names and the one line description 1342 * of the page: 1343 * "a, b, c \- sample description" 1344 * Take out the first name, before the first comma 1345 * (or space) and store it in rec->name. 1346 * If the page has aliases then they should be 1347 * in the form of a comma separated list. 1348 * Keep looping while there is a comma in name_desc, 1349 * extract the alias name and store in rec->links. 1350 * When there are no more commas left, break out. 1351 */ 1352 int has_alias = 0; // Any more aliases left? 1353 while (*name_desc) { 1354 /* Remove any leading spaces or hyphens. */ 1355 if (name_desc[0] == ' ' || name_desc[0] == '-') { 1356 name_desc++; 1357 continue; 1358 } 1359 sz = strcspn(name_desc, ", "); 1360 1361 /* Extract the first term and store it in rec->name. */ 1362 if (rec->name == NULL) { 1363 if (name_desc[sz] == ',') 1364 has_alias = 1; 1365 rec->name = estrndup(name_desc, sz); 1366 /* XXX This would only happen with a poorly 1367 * written man page, maybe warn? */ 1368 if (name_desc[sz] == '\0') 1369 break; 1370 name_desc += sz + 1; 1371 continue; 1372 } 1373 1374 /* 1375 * Once rec->name is set, rest of the names 1376 * are to be treated as links or aliases. 1377 */ 1378 if (rec->name && has_alias) { 1379 if (name_desc[sz] != ',') { 1380 /* No more commas left --> no more 1381 * aliases to take out */ 1382 has_alias = 0; 1383 } 1384 concat2(&rec->links, name_desc, sz); 1385 /* XXX This would only happen with a poorly 1386 * written man page, maybe warn? */ 1387 if (name_desc[sz] == '\0') 1388 break; 1389 name_desc += sz + 1; 1390 continue; 1391 } 1392 break; 1393 } 1394 1395 /* Parse any escape sequences that might be there */ 1396 char *temp = parse_escape(name_desc); 1397 free(rec->name_desc); 1398 rec->name_desc = temp; 1399 temp = parse_escape(rec->name); 1400 free(rec->name); 1401 rec->name = temp; 1402 return; 1403 } 1404 1405 /* The RETURN VALUE section might be specified in multiple ways */ 1406 if (strcmp(head->string, "RETURN") == 0 && 1407 head->next != NULL && head->next->type == ROFFT_TEXT && 1408 (strcmp(head->next->string, "VALUE") == 0 || 1409 strcmp(head->next->string, "VALUES") == 0)) { 1410 man_parse_section(MANSEC_RETURN_VALUES, n, rec); 1411 return; 1412 } 1413 1414 /* 1415 * EXIT STATUS section can also be specified all on one line or on two 1416 * separate lines. 1417 */ 1418 if (strcmp(head->string, "EXIT") == 0 && 1419 head->next != NULL && head->next->type == ROFFT_TEXT && 1420 strcmp(head->next->string, "STATUS") == 0) { 1421 man_parse_section(MANSEC_EXIT_STATUS, n, rec); 1422 return; 1423 } 1424 1425 /* Store the rest of the content in desc. */ 1426 man_parse_section(MANSEC_NONE, n, rec); 1427 } 1428 1429 /* 1430 * pman_parse_node -- 1431 * Generic function to iterate through a node. Usually called from 1432 * man_parse_section to parse a particular section of the man page. 1433 */ 1434 static void 1435 pman_parse_node(const struct roff_node *n, secbuff *s) 1436 { 1437 if (n == NULL) 1438 return; 1439 1440 if (n->type == ROFFT_TEXT) 1441 append(s, n->string); 1442 1443 pman_parse_node(n->child, s); 1444 pman_parse_node(n->next, s); 1445 } 1446 1447 /* 1448 * man_parse_section -- 1449 * Takes two parameters: 1450 * sec: Tells which section we are present in 1451 * n: Is the present node of the AST. 1452 * Depending on the section, we call pman_parse_node to parse that section and 1453 * concatenate the content from that section into the buffer for that section. 1454 */ 1455 static void 1456 man_parse_section(enum man_sec sec, const struct roff_node *n, mandb_rec *rec) 1457 { 1458 /* 1459 * If the user sepecified the 'l' flag then just parse 1460 * the NAME section, ignore the rest. 1461 */ 1462 if (mflags.limit) 1463 return; 1464 1465 switch (sec) { 1466 case MANSEC_LIBRARY: 1467 pman_parse_node(n, &rec->lib); 1468 break; 1469 case MANSEC_RETURN_VALUES: 1470 pman_parse_node(n, &rec->return_vals); 1471 break; 1472 case MANSEC_ENVIRONMENT: 1473 pman_parse_node(n, &rec->env); 1474 break; 1475 case MANSEC_FILES: 1476 pman_parse_node(n, &rec->files); 1477 break; 1478 case MANSEC_EXIT_STATUS: 1479 pman_parse_node(n, &rec->exit_status); 1480 break; 1481 case MANSEC_DIAGNOSTICS: 1482 pman_parse_node(n, &rec->diagnostics); 1483 break; 1484 case MANSEC_ERRORS: 1485 pman_parse_node(n, &rec->errors); 1486 break; 1487 case MANSEC_NAME: 1488 case MANSEC_SYNOPSIS: 1489 case MANSEC_EXAMPLES: 1490 case MANSEC_STANDARDS: 1491 case MANSEC_HISTORY: 1492 case MANSEC_BUGS: 1493 case MANSEC_AUTHORS: 1494 case MANSEC_COPYRIGHT: 1495 break; 1496 default: 1497 pman_parse_node(n, &rec->desc); 1498 break; 1499 } 1500 1501 } 1502 1503 /* 1504 * insert_into_db -- 1505 * Inserts the parsed data of the man page in the Sqlite databse. 1506 * If any of the values is NULL, then we cleanup and return -1 indicating 1507 * an error. 1508 * Otherwise, store the data in the database and return 0. 1509 */ 1510 static int 1511 insert_into_db(sqlite3 *db, mandb_rec *rec) 1512 { 1513 int rc = 0; 1514 int idx = -1; 1515 const char *sqlstr = NULL; 1516 sqlite3_stmt *stmt = NULL; 1517 char *ln = NULL; 1518 char *errmsg = NULL; 1519 long int mandb_rowid; 1520 1521 /* 1522 * At the very minimum we want to make sure that we store 1523 * the following data: 1524 * Name, one line description, and the MD5 hash 1525 */ 1526 if (rec->name == NULL || rec->name_desc == NULL || 1527 rec->md5_hash == NULL) { 1528 cleanup(rec); 1529 return -1; 1530 } 1531 1532 /* Write null byte at the end of all the sec_buffs */ 1533 rec->desc.data[rec->desc.offset] = 0; 1534 rec->lib.data[rec->lib.offset] = 0; 1535 rec->env.data[rec->env.offset] = 0; 1536 rec->return_vals.data[rec->return_vals.offset] = 0; 1537 rec->exit_status.data[rec->exit_status.offset] = 0; 1538 rec->files.data[rec->files.offset] = 0; 1539 rec->diagnostics.data[rec->diagnostics.offset] = 0; 1540 rec->errors.data[rec->errors.offset] = 0; 1541 1542 /* 1543 * In case of a mdoc page: (sorry, no better place to put this code) 1544 * parse the comma separated list of names of man pages, 1545 * the first name will be stored in the mandb table, rest will be 1546 * treated as links and put in the mandb_links table. 1547 */ 1548 if (rec->page_type == MDOC) { 1549 char *tmp; 1550 rec->links = estrdup(rec->name); 1551 free(rec->name); 1552 size_t sz = strcspn(rec->links, " \0"); 1553 rec->name = emalloc(sz + 1); 1554 memcpy(rec->name, rec->links, sz); 1555 if(rec->name[sz - 1] == ',') 1556 rec->name[sz - 1] = 0; 1557 else 1558 rec->name[sz] = 0; 1559 while (rec->links[sz] == ' ') 1560 ++sz; 1561 tmp = estrdup(rec->links + sz); 1562 free(rec->links); 1563 rec->links = tmp; 1564 } 1565 1566 /*------------------------ Populate the mandb table---------------------------*/ 1567 sqlstr = "INSERT INTO mandb VALUES (:section, :name, :name_desc, :desc," 1568 " :lib, :return_vals, :env, :files, :exit_status," 1569 " :diagnostics, :errors, :md5_hash, :machine)"; 1570 1571 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1572 if (rc != SQLITE_OK) 1573 goto Out; 1574 1575 idx = sqlite3_bind_parameter_index(stmt, ":name"); 1576 rc = sqlite3_bind_text(stmt, idx, rec->name, -1, NULL); 1577 if (rc != SQLITE_OK) { 1578 sqlite3_finalize(stmt); 1579 goto Out; 1580 } 1581 1582 idx = sqlite3_bind_parameter_index(stmt, ":section"); 1583 rc = sqlite3_bind_text(stmt, idx, rec->section, -1, NULL); 1584 if (rc != SQLITE_OK) { 1585 sqlite3_finalize(stmt); 1586 goto Out; 1587 } 1588 1589 idx = sqlite3_bind_parameter_index(stmt, ":name_desc"); 1590 rc = sqlite3_bind_text(stmt, idx, rec->name_desc, -1, NULL); 1591 if (rc != SQLITE_OK) { 1592 sqlite3_finalize(stmt); 1593 goto Out; 1594 } 1595 1596 idx = sqlite3_bind_parameter_index(stmt, ":desc"); 1597 rc = sqlite3_bind_text(stmt, idx, rec->desc.data, 1598 rec->desc.offset + 1, NULL); 1599 if (rc != SQLITE_OK) { 1600 sqlite3_finalize(stmt); 1601 goto Out; 1602 } 1603 1604 idx = sqlite3_bind_parameter_index(stmt, ":lib"); 1605 rc = sqlite3_bind_text(stmt, idx, rec->lib.data, 1606 rec->lib.offset + 1, NULL); 1607 if (rc != SQLITE_OK) { 1608 sqlite3_finalize(stmt); 1609 goto Out; 1610 } 1611 1612 idx = sqlite3_bind_parameter_index(stmt, ":return_vals"); 1613 rc = sqlite3_bind_text(stmt, idx, rec->return_vals.data, 1614 rec->return_vals.offset + 1, NULL); 1615 if (rc != SQLITE_OK) { 1616 sqlite3_finalize(stmt); 1617 goto Out; 1618 } 1619 1620 idx = sqlite3_bind_parameter_index(stmt, ":env"); 1621 rc = sqlite3_bind_text(stmt, idx, rec->env.data, 1622 rec->env.offset + 1, NULL); 1623 if (rc != SQLITE_OK) { 1624 sqlite3_finalize(stmt); 1625 goto Out; 1626 } 1627 1628 idx = sqlite3_bind_parameter_index(stmt, ":files"); 1629 rc = sqlite3_bind_text(stmt, idx, rec->files.data, 1630 rec->files.offset + 1, NULL); 1631 if (rc != SQLITE_OK) { 1632 sqlite3_finalize(stmt); 1633 goto Out; 1634 } 1635 1636 idx = sqlite3_bind_parameter_index(stmt, ":exit_status"); 1637 rc = sqlite3_bind_text(stmt, idx, rec->exit_status.data, 1638 rec->exit_status.offset + 1, NULL); 1639 if (rc != SQLITE_OK) { 1640 sqlite3_finalize(stmt); 1641 goto Out; 1642 } 1643 1644 idx = sqlite3_bind_parameter_index(stmt, ":diagnostics"); 1645 rc = sqlite3_bind_text(stmt, idx, rec->diagnostics.data, 1646 rec->diagnostics.offset + 1, NULL); 1647 if (rc != SQLITE_OK) { 1648 sqlite3_finalize(stmt); 1649 goto Out; 1650 } 1651 1652 idx = sqlite3_bind_parameter_index(stmt, ":errors"); 1653 rc = sqlite3_bind_text(stmt, idx, rec->errors.data, 1654 rec->errors.offset + 1, NULL); 1655 if (rc != SQLITE_OK) { 1656 sqlite3_finalize(stmt); 1657 goto Out; 1658 } 1659 1660 idx = sqlite3_bind_parameter_index(stmt, ":md5_hash"); 1661 rc = sqlite3_bind_text(stmt, idx, rec->md5_hash, -1, NULL); 1662 if (rc != SQLITE_OK) { 1663 sqlite3_finalize(stmt); 1664 goto Out; 1665 } 1666 1667 idx = sqlite3_bind_parameter_index(stmt, ":machine"); 1668 if (rec->machine) 1669 rc = sqlite3_bind_text(stmt, idx, rec->machine, -1, NULL); 1670 else 1671 rc = sqlite3_bind_null(stmt, idx); 1672 if (rc != SQLITE_OK) { 1673 sqlite3_finalize(stmt); 1674 goto Out; 1675 } 1676 1677 rc = sqlite3_step(stmt); 1678 if (rc != SQLITE_DONE) { 1679 sqlite3_finalize(stmt); 1680 goto Out; 1681 } 1682 1683 sqlite3_finalize(stmt); 1684 1685 /* Get the row id of the last inserted row */ 1686 mandb_rowid = sqlite3_last_insert_rowid(db); 1687 1688 /*------------------------Populate the mandb_meta table-----------------------*/ 1689 sqlstr = "INSERT INTO mandb_meta VALUES (:device, :inode, :mtime," 1690 " :file, :md5_hash, :id)"; 1691 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1692 if (rc != SQLITE_OK) 1693 goto Out; 1694 1695 idx = sqlite3_bind_parameter_index(stmt, ":device"); 1696 rc = sqlite3_bind_int64(stmt, idx, rec->device); 1697 if (rc != SQLITE_OK) { 1698 sqlite3_finalize(stmt); 1699 goto Out; 1700 } 1701 1702 idx = sqlite3_bind_parameter_index(stmt, ":inode"); 1703 rc = sqlite3_bind_int64(stmt, idx, rec->inode); 1704 if (rc != SQLITE_OK) { 1705 sqlite3_finalize(stmt); 1706 goto Out; 1707 } 1708 1709 idx = sqlite3_bind_parameter_index(stmt, ":mtime"); 1710 rc = sqlite3_bind_int64(stmt, idx, rec->mtime); 1711 if (rc != SQLITE_OK) { 1712 sqlite3_finalize(stmt); 1713 goto Out; 1714 } 1715 1716 idx = sqlite3_bind_parameter_index(stmt, ":file"); 1717 rc = sqlite3_bind_text(stmt, idx, rec->file_path, -1, NULL); 1718 if (rc != SQLITE_OK) { 1719 sqlite3_finalize(stmt); 1720 goto Out; 1721 } 1722 1723 idx = sqlite3_bind_parameter_index(stmt, ":md5_hash"); 1724 rc = sqlite3_bind_text(stmt, idx, rec->md5_hash, -1, NULL); 1725 if (rc != SQLITE_OK) { 1726 sqlite3_finalize(stmt); 1727 goto Out; 1728 } 1729 1730 idx = sqlite3_bind_parameter_index(stmt, ":id"); 1731 rc = sqlite3_bind_int64(stmt, idx, mandb_rowid); 1732 if (rc != SQLITE_OK) { 1733 sqlite3_finalize(stmt); 1734 goto Out; 1735 } 1736 1737 rc = sqlite3_step(stmt); 1738 sqlite3_finalize(stmt); 1739 if (rc == SQLITE_CONSTRAINT_UNIQUE) { 1740 /* The *most* probable reason for reaching here is that 1741 * the UNIQUE contraint on the file column of the mandb_meta 1742 * table was violated. 1743 * This can happen when a file was updated/modified. 1744 * To fix this we need to do two things: 1745 * 1. Delete the row for the older version of this file 1746 * from mandb table. 1747 * 2. Run an UPDATE query to update the row for this file 1748 * in the mandb_meta table. 1749 */ 1750 warnx("Trying to update index for %s", rec->file_path); 1751 char *sql = sqlite3_mprintf("DELETE FROM mandb " 1752 "WHERE rowid = (SELECT id" 1753 " FROM mandb_meta" 1754 " WHERE file = %Q)", 1755 rec->file_path); 1756 sqlite3_exec(db, sql, NULL, NULL, &errmsg); 1757 sqlite3_free(sql); 1758 if (errmsg != NULL) { 1759 if (mflags.verbosity) 1760 warnx("%s", errmsg); 1761 free(errmsg); 1762 } 1763 sqlstr = "UPDATE mandb_meta SET device = :device," 1764 " inode = :inode, mtime = :mtime, id = :id," 1765 " md5_hash = :md5 WHERE file = :file"; 1766 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1767 if (rc != SQLITE_OK) { 1768 if (mflags.verbosity) 1769 warnx("Update failed with error: %s", 1770 sqlite3_errmsg(db)); 1771 close_db(db); 1772 cleanup(rec); 1773 errx(EXIT_FAILURE, 1774 "Consider running makemandb with -f option"); 1775 } 1776 1777 idx = sqlite3_bind_parameter_index(stmt, ":device"); 1778 sqlite3_bind_int64(stmt, idx, rec->device); 1779 idx = sqlite3_bind_parameter_index(stmt, ":inode"); 1780 sqlite3_bind_int64(stmt, idx, rec->inode); 1781 idx = sqlite3_bind_parameter_index(stmt, ":mtime"); 1782 sqlite3_bind_int64(stmt, idx, rec->mtime); 1783 idx = sqlite3_bind_parameter_index(stmt, ":id"); 1784 sqlite3_bind_int64(stmt, idx, mandb_rowid); 1785 idx = sqlite3_bind_parameter_index(stmt, ":md5"); 1786 sqlite3_bind_text(stmt, idx, rec->md5_hash, -1, NULL); 1787 idx = sqlite3_bind_parameter_index(stmt, ":file"); 1788 sqlite3_bind_text(stmt, idx, rec->file_path, -1, NULL); 1789 rc = sqlite3_step(stmt); 1790 sqlite3_finalize(stmt); 1791 1792 if (rc != SQLITE_DONE) { 1793 if (mflags.verbosity) 1794 warnx("%s", sqlite3_errmsg(db)); 1795 close_db(db); 1796 cleanup(rec); 1797 errx(EXIT_FAILURE, 1798 "Consider running makemandb with -f option"); 1799 } 1800 } else if (rc != SQLITE_DONE) { 1801 /* Otherwise make this error fatal */ 1802 warnx("Failed at %s\n%s", rec->file_path, sqlite3_errmsg(db)); 1803 cleanup(rec); 1804 close_db(db); 1805 exit(EXIT_FAILURE); 1806 } 1807 1808 /*------------------------ Populate the mandb_links table---------------------*/ 1809 char *str = NULL; 1810 char *links; 1811 if (rec->links && strlen(rec->links)) { 1812 links = rec->links; 1813 for(ln = strtok(links, " "); ln; ln = strtok(NULL, " ")) { 1814 if (ln[0] == ',') 1815 ln++; 1816 if(ln[strlen(ln) - 1] == ',') 1817 ln[strlen(ln) - 1] = 0; 1818 1819 str = sqlite3_mprintf("INSERT INTO mandb_links" 1820 " VALUES (%Q, %Q, %Q, %Q, %Q)", 1821 ln, rec->name, rec->section, 1822 rec->machine, rec->md5_hash); 1823 sqlite3_exec(db, str, NULL, NULL, &errmsg); 1824 sqlite3_free(str); 1825 if (errmsg != NULL) { 1826 warnx("%s", errmsg); 1827 cleanup(rec); 1828 free(errmsg); 1829 return -1; 1830 } 1831 } 1832 } 1833 1834 cleanup(rec); 1835 return 0; 1836 1837 Out: 1838 if (mflags.verbosity) 1839 warnx("%s", sqlite3_errmsg(db)); 1840 cleanup(rec); 1841 return -1; 1842 } 1843 1844 /* 1845 * check_md5-- 1846 * Generates the md5 hash of the file and checks if it already doesn't exist 1847 * in the table (passed as the 3rd parameter). 1848 * This function is being used to avoid hardlinks. 1849 * On successful completion it will also set the value of the fourth parameter 1850 * to the md5 hash of the file (computed previously). It is the responsibility 1851 * of the caller to free this buffer. 1852 * Return values: 1853 * -1: If an error occurs somewhere and sets the md5 return buffer to NULL. 1854 * 0: If the md5 hash does not exist in the table. 1855 * 1: If the hash exists in the database. 1856 */ 1857 static int 1858 check_md5(const char *file, sqlite3 *db, const char *table, char **md5sum, 1859 void *buf, size_t buflen) 1860 { 1861 int rc = 0; 1862 int idx = -1; 1863 char *sqlstr = NULL; 1864 sqlite3_stmt *stmt = NULL; 1865 1866 assert(file != NULL); 1867 *md5sum = MD5Data(buf, buflen, NULL); 1868 if (*md5sum == NULL) { 1869 if (mflags.verbosity) 1870 warn("md5 failed: %s", file); 1871 return -1; 1872 } 1873 1874 easprintf(&sqlstr, "SELECT * FROM %s WHERE md5_hash = :md5_hash", 1875 table); 1876 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1877 if (rc != SQLITE_OK) { 1878 free(sqlstr); 1879 free(*md5sum); 1880 *md5sum = NULL; 1881 return -1; 1882 } 1883 1884 idx = sqlite3_bind_parameter_index(stmt, ":md5_hash"); 1885 rc = sqlite3_bind_text(stmt, idx, *md5sum, -1, NULL); 1886 if (rc != SQLITE_OK) { 1887 if (mflags.verbosity) 1888 warnx("%s", sqlite3_errmsg(db)); 1889 sqlite3_finalize(stmt); 1890 free(sqlstr); 1891 free(*md5sum); 1892 *md5sum = NULL; 1893 return -1; 1894 } 1895 1896 if (sqlite3_step(stmt) == SQLITE_ROW) { 1897 sqlite3_finalize(stmt); 1898 free(sqlstr); 1899 return 0; 1900 } 1901 1902 sqlite3_finalize(stmt); 1903 free(sqlstr); 1904 return 1; 1905 } 1906 1907 /* Optimize the index for faster search */ 1908 static void 1909 optimize(sqlite3 *db) 1910 { 1911 const char *sqlstr; 1912 char *errmsg = NULL; 1913 1914 if (mflags.verbosity == 2) 1915 printf("Optimizing the database index\n"); 1916 sqlstr = "INSERT INTO mandb(mandb) VALUES (\'optimize\');" 1917 "VACUUM"; 1918 sqlite3_exec(db, sqlstr, NULL, NULL, &errmsg); 1919 if (errmsg != NULL) { 1920 if (mflags.verbosity) 1921 warnx("%s", errmsg); 1922 free(errmsg); 1923 return; 1924 } 1925 } 1926 1927 /* 1928 * cleanup -- 1929 * cleans up the global buffers 1930 */ 1931 static void 1932 cleanup(mandb_rec *rec) 1933 { 1934 rec->desc.offset = 0; 1935 rec->lib.offset = 0; 1936 rec->return_vals.offset = 0; 1937 rec->env.offset = 0; 1938 rec->exit_status.offset = 0; 1939 rec->diagnostics.offset = 0; 1940 rec->errors.offset = 0; 1941 rec->files.offset = 0; 1942 1943 free(rec->machine); 1944 rec->machine = NULL; 1945 1946 free(rec->links); 1947 rec->links = NULL; 1948 1949 free(rec->file_path); 1950 rec->file_path = NULL; 1951 1952 free(rec->name); 1953 rec->name = NULL; 1954 1955 free(rec->name_desc); 1956 rec->name_desc = NULL; 1957 1958 free(rec->md5_hash); 1959 rec->md5_hash = NULL; 1960 1961 free(rec->section); 1962 rec->section = NULL; 1963 } 1964 1965 /* 1966 * init_secbuffs-- 1967 * Sets the value of buflen for all the sec_buff field of rec. And then 1968 * allocate memory to each sec_buff member of rec. 1969 */ 1970 static void 1971 init_secbuffs(mandb_rec *rec) 1972 { 1973 /* 1974 * Some sec_buff might need more memory, for example desc, 1975 * which stores the data of the DESCRIPTION section, 1976 * while some might need very small amount of memory. 1977 * Therefore explicitly setting the value of buflen field for 1978 * each sec_buff. 1979 */ 1980 rec->desc.buflen = 10 * BUFLEN; 1981 rec->desc.data = emalloc(rec->desc.buflen); 1982 rec->desc.offset = 0; 1983 1984 rec->lib.buflen = BUFLEN / 2; 1985 rec->lib.data = emalloc(rec->lib.buflen); 1986 rec->lib.offset = 0; 1987 1988 rec->return_vals.buflen = BUFLEN; 1989 rec->return_vals.data = emalloc(rec->return_vals.buflen); 1990 rec->return_vals.offset = 0; 1991 1992 rec->exit_status.buflen = BUFLEN; 1993 rec->exit_status.data = emalloc(rec->exit_status.buflen); 1994 rec->exit_status.offset = 0; 1995 1996 rec->env.buflen = BUFLEN; 1997 rec->env.data = emalloc(rec->env.buflen); 1998 rec->env.offset = 0; 1999 2000 rec->files.buflen = BUFLEN; 2001 rec->files.data = emalloc(rec->files.buflen); 2002 rec->files.offset = 0; 2003 2004 rec->diagnostics.buflen = BUFLEN; 2005 rec->diagnostics.data = emalloc(rec->diagnostics.buflen); 2006 rec->diagnostics.offset = 0; 2007 2008 rec->errors.buflen = BUFLEN; 2009 rec->errors.data = emalloc(rec->errors.buflen); 2010 rec->errors.offset = 0; 2011 } 2012 2013 /* 2014 * free_secbuffs-- 2015 * This function should be called at the end, when all the pages have been 2016 * parsed. 2017 * It frees the memory allocated to sec_buffs by init_secbuffs in the starting. 2018 */ 2019 static void 2020 free_secbuffs(mandb_rec *rec) 2021 { 2022 free(rec->desc.data); 2023 free(rec->lib.data); 2024 free(rec->return_vals.data); 2025 free(rec->exit_status.data); 2026 free(rec->env.data); 2027 free(rec->files.data); 2028 free(rec->diagnostics.data); 2029 free(rec->errors.data); 2030 } 2031 2032 static void 2033 replace_hyph(char *str) 2034 { 2035 char *iter = str; 2036 while ((iter = strchr(iter, ASCII_HYPH)) != NULL) 2037 *iter = '-'; 2038 2039 iter = str; 2040 while ((iter = strchr(iter, ASCII_NBRSP)) != NULL) 2041 *iter = '-'; 2042 } 2043 2044 static char * 2045 parse_escape(const char *str) 2046 { 2047 const char *backslash, *last_backslash; 2048 char *result, *iter; 2049 size_t len; 2050 2051 assert(str); 2052 2053 last_backslash = str; 2054 backslash = strchr(str, '\\'); 2055 if (backslash == NULL) { 2056 result = estrdup(str); 2057 replace_hyph(result); 2058 return result; 2059 } 2060 2061 result = emalloc(strlen(str) + 1); 2062 iter = result; 2063 2064 do { 2065 len = backslash - last_backslash; 2066 memcpy(iter, last_backslash, len); 2067 iter += len; 2068 if (backslash[1] == '-' || backslash[1] == ' ') { 2069 *iter++ = backslash[1]; 2070 last_backslash = backslash + 2; 2071 backslash = strchr(last_backslash, '\\'); 2072 } else { 2073 ++backslash; 2074 mandoc_escape(&backslash, NULL, NULL); 2075 last_backslash = backslash; 2076 if (backslash == NULL) 2077 break; 2078 backslash = strchr(last_backslash, '\\'); 2079 } 2080 } while (backslash != NULL); 2081 if (last_backslash != NULL) 2082 strcpy(iter, last_backslash); 2083 2084 replace_hyph(result); 2085 return result; 2086 } 2087 2088 /* 2089 * append-- 2090 * Concatenates a space and src at the end of sbuff->data (much like concat in 2091 * apropos-utils.c). 2092 * Rather than reallocating space for writing data, it uses the value of the 2093 * offset field of sec_buff to write new data at the free space left in the 2094 * buffer. 2095 * In case the size of the data to be appended exceeds the number of bytes left 2096 * in the buffer, it reallocates buflen number of bytes and then continues. 2097 * Value of offset field should be adjusted as new data is written. 2098 * 2099 * NOTE: This function does not write the null byte at the end of the buffers, 2100 * write a null byte at the position pointed to by offset before inserting data 2101 * in the db. 2102 */ 2103 static void 2104 append(secbuff *sbuff, const char *src) 2105 { 2106 short flag = 0; 2107 size_t srclen, newlen; 2108 char *temp; 2109 2110 assert(src != NULL); 2111 temp = parse_escape(src); 2112 srclen = strlen(temp); 2113 2114 if (sbuff->data == NULL) { 2115 sbuff->data = emalloc(sbuff->buflen); 2116 sbuff->offset = 0; 2117 } 2118 2119 newlen = sbuff->offset + srclen + 2; 2120 if (newlen >= sbuff->buflen) { 2121 while (sbuff->buflen < newlen) 2122 sbuff->buflen += sbuff->buflen; 2123 sbuff->data = erealloc(sbuff->data, sbuff->buflen); 2124 flag = 1; 2125 } 2126 2127 /* Append a space at the end of the buffer. */ 2128 if (sbuff->offset || flag) 2129 sbuff->data[sbuff->offset++] = ' '; 2130 /* Now, copy src at the end of the buffer. */ 2131 memcpy(sbuff->data + sbuff->offset, temp, srclen); 2132 sbuff->offset += srclen; 2133 free(temp); 2134 } 2135 2136 static void 2137 usage(void) 2138 { 2139 fprintf(stderr, "Usage: %s [-floQqv] [-C path]\n", getprogname()); 2140 exit(1); 2141 } 2142
Indexes created Mon Sep 29 18:09:42 GMT 2025