makemandb.c revision 1.29
1/* $NetBSD: makemandb.c,v 1.29 2015/04/07 17:47:10 plunky Exp $ */ 2/* 3 * Copyright (c) 2011 Abhinav Upadhyay <er.abhinav.upadhyay@gmail.com> 4 * Copyright (c) 2011 Kristaps Dzonsons <kristaps@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 1.29 2015/04/07 17:47:10 plunky Exp $"); 21 22#include <sys/stat.h> 23#include <sys/types.h> 24 25#include <assert.h> 26#include <ctype.h> 27#include <dirent.h> 28#include <err.h> 29#include <archive.h> 30#include <libgen.h> 31#include <md5.h> 32#include <stdio.h> 33#include <stdlib.h> 34#include <string.h> 35#include <unistd.h> 36#include <util.h> 37 38#include "apropos-utils.h" 39#include "dist/man.h" 40#include "dist/mandoc.h" 41#include "dist/mdoc.h" 42#include "sqlite3.h" 43 44#define BUFLEN 1024 45#define MDOC 0 //If the page is of mdoc(7) type 46#define MAN 1 //If the page is of man(7) type 47 48/* 49 * A data structure for holding section specific data. 50 */ 51typedef struct secbuff { 52 char *data; 53 size_t buflen; //Total length of buffer allocated initially 54 size_t offset; // Current offset in the buffer. 55} secbuff; 56 57typedef struct makemandb_flags { 58 int optimize; 59 int limit; // limit the indexing to only NAME section 60 int recreate; // Database was created from scratch 61 int verbosity; // 0: quiet, 1: default, 2: verbose 62} makemandb_flags; 63 64typedef struct mandb_rec { 65 /* Fields for mandb table */ 66 char *name; // for storing the name of the man page 67 char *name_desc; // for storing the one line description (.Nd) 68 secbuff desc; // for storing the DESCRIPTION section 69 secbuff lib; // for the LIBRARY section 70 secbuff return_vals; // RETURN VALUES 71 secbuff env; // ENVIRONMENT 72 secbuff files; // FILES 73 secbuff exit_status; // EXIT STATUS 74 secbuff diagnostics; // DIAGNOSTICS 75 secbuff errors; // ERRORS 76 char section[2]; 77 78 int xr_found; // To track whether a .Xr was seen when parsing a section 79 80 /* Fields for mandb_meta table */ 81 char *md5_hash; 82 dev_t device; 83 ino_t inode; 84 time_t mtime; 85 86 /* Fields for mandb_links table */ 87 char *machine; 88 char *links; //all the links to a page in a space separated form 89 char *file_path; 90 91 /* Non-db fields */ 92 int page_type; //Indicates the type of page: mdoc or man 93} mandb_rec; 94 95static void append(secbuff *sbuff, const char *src); 96static void init_secbuffs(mandb_rec *); 97static void free_secbuffs(mandb_rec *); 98static int check_md5(const char *, sqlite3 *, const char *, char **, void *, size_t); 99static void cleanup(mandb_rec *); 100static void set_section(const struct mdoc *, const struct man *, mandb_rec *); 101static void set_machine(const struct mdoc *, mandb_rec *); 102static int insert_into_db(sqlite3 *, mandb_rec *); 103static void begin_parse(const char *, struct mparse *, mandb_rec *, 104 const void *, size_t len); 105static void pmdoc_node(const struct mdoc_node *, mandb_rec *); 106static void pmdoc_Nm(const struct mdoc_node *, mandb_rec *); 107static void pmdoc_Nd(const struct mdoc_node *, mandb_rec *); 108static void pmdoc_Sh(const struct mdoc_node *, mandb_rec *); 109static void pmdoc_Xr(const struct mdoc_node *, mandb_rec *); 110static void pmdoc_Pp(const struct mdoc_node *, mandb_rec *); 111static void pmdoc_macro_handler(const struct mdoc_node *, mandb_rec *, 112 enum mdoct); 113static void pman_node(const struct man_node *n, mandb_rec *); 114static void pman_parse_node(const struct man_node *, secbuff *); 115static void pman_parse_name(const struct man_node *, mandb_rec *); 116static void pman_sh(const struct man_node *, mandb_rec *); 117static void pman_block(const struct man_node *, mandb_rec *); 118static void traversedir(const char *, const char *, sqlite3 *, struct mparse *); 119static void mdoc_parse_section(enum mdoc_sec, const char *, mandb_rec *); 120static void man_parse_section(enum man_sec, const struct man_node *, mandb_rec *); 121static void build_file_cache(sqlite3 *, const char *, const char *, 122 struct stat *); 123static void update_db(sqlite3 *, struct mparse *, mandb_rec *); 124__dead static void usage(void); 125static void optimize(sqlite3 *); 126static char *parse_escape(const char *); 127static void replace_hyph(char *); 128static makemandb_flags mflags = { .verbosity = 1 }; 129 130typedef void (*pman_nf)(const struct man_node *n, mandb_rec *); 131typedef void (*pmdoc_nf)(const struct mdoc_node *n, mandb_rec *); 132static const pmdoc_nf mdocs[MDOC_MAX] = { 133 NULL, /* Ap */ 134 NULL, /* Dd */ 135 NULL, /* Dt */ 136 NULL, /* Os */ 137 pmdoc_Sh, /* Sh */ 138 NULL, /* Ss */ 139 pmdoc_Pp, /* Pp */ 140 NULL, /* D1 */ 141 NULL, /* Dl */ 142 NULL, /* Bd */ 143 NULL, /* Ed */ 144 NULL, /* Bl */ 145 NULL, /* El */ 146 NULL, /* It */ 147 NULL, /* Ad */ 148 NULL, /* An */ 149 NULL, /* Ar */ 150 NULL, /* Cd */ 151 NULL, /* Cm */ 152 NULL, /* Dv */ 153 NULL, /* Er */ 154 NULL, /* Ev */ 155 NULL, /* Ex */ 156 NULL, /* Fa */ 157 NULL, /* Fd */ 158 NULL, /* Fl */ 159 NULL, /* Fn */ 160 NULL, /* Ft */ 161 NULL, /* Ic */ 162 NULL, /* In */ 163 NULL, /* Li */ 164 pmdoc_Nd, /* Nd */ 165 pmdoc_Nm, /* Nm */ 166 NULL, /* Op */ 167 NULL, /* Ot */ 168 NULL, /* Pa */ 169 NULL, /* Rv */ 170 NULL, /* St */ 171 NULL, /* Va */ 172 NULL, /* Vt */ 173 pmdoc_Xr, /* Xr */ 174 NULL, /* %A */ 175 NULL, /* %B */ 176 NULL, /* %D */ 177 NULL, /* %I */ 178 NULL, /* %J */ 179 NULL, /* %N */ 180 NULL, /* %O */ 181 NULL, /* %P */ 182 NULL, /* %R */ 183 NULL, /* %T */ 184 NULL, /* %V */ 185 NULL, /* Ac */ 186 NULL, /* Ao */ 187 NULL, /* Aq */ 188 NULL, /* At */ 189 NULL, /* Bc */ 190 NULL, /* Bf */ 191 NULL, /* Bo */ 192 NULL, /* Bq */ 193 NULL, /* Bsx */ 194 NULL, /* Bx */ 195 NULL, /* Db */ 196 NULL, /* Dc */ 197 NULL, /* Do */ 198 NULL, /* Dq */ 199 NULL, /* Ec */ 200 NULL, /* Ef */ 201 NULL, /* Em */ 202 NULL, /* Eo */ 203 NULL, /* Fx */ 204 NULL, /* Ms */ 205 NULL, /* No */ 206 NULL, /* Ns */ 207 NULL, /* Nx */ 208 NULL, /* Ox */ 209 NULL, /* Pc */ 210 NULL, /* Pf */ 211 NULL, /* Po */ 212 NULL, /* Pq */ 213 NULL, /* Qc */ 214 NULL, /* Ql */ 215 NULL, /* Qo */ 216 NULL, /* Qq */ 217 NULL, /* Re */ 218 NULL, /* Rs */ 219 NULL, /* Sc */ 220 NULL, /* So */ 221 NULL, /* Sq */ 222 NULL, /* Sm */ 223 NULL, /* Sx */ 224 NULL, /* Sy */ 225 NULL, /* Tn */ 226 NULL, /* Ux */ 227 NULL, /* Xc */ 228 NULL, /* Xo */ 229 NULL, /* Fo */ 230 NULL, /* Fc */ 231 NULL, /* Oo */ 232 NULL, /* Oc */ 233 NULL, /* Bk */ 234 NULL, /* Ek */ 235 NULL, /* Bt */ 236 NULL, /* Hf */ 237 NULL, /* Fr */ 238 NULL, /* Ud */ 239 NULL, /* Lb */ 240 NULL, /* Lp */ 241 NULL, /* Lk */ 242 NULL, /* Mt */ 243 NULL, /* Brq */ 244 NULL, /* Bro */ 245 NULL, /* Brc */ 246 NULL, /* %C */ 247 NULL, /* Es */ 248 NULL, /* En */ 249 NULL, /* Dx */ 250 NULL, /* %Q */ 251 NULL, /* br */ 252 NULL, /* sp */ 253 NULL, /* %U */ 254 NULL, /* Ta */ 255}; 256 257static const pman_nf mans[MAN_MAX] = { 258 NULL, //br 259 NULL, //TH 260 pman_sh, //SH 261 NULL, //SS 262 NULL, //TP 263 NULL, //LP 264 NULL, //PP 265 NULL, //P 266 NULL, //IP 267 NULL, //HP 268 NULL, //SM 269 NULL, //SB 270 NULL, //BI 271 NULL, //IB 272 NULL, //BR 273 NULL, //RB 274 NULL, //R 275 pman_block, //B 276 NULL, //I 277 NULL, //IR 278 NULL, //RI 279 NULL, //na 280 NULL, //sp 281 NULL, //nf 282 NULL, //fi 283 NULL, //RE 284 NULL, //RS 285 NULL, //DT 286 NULL, //UC 287 NULL, //PD 288 NULL, //AT 289 NULL, //in 290 NULL, //ft 291}; 292 293 294int 295main(int argc, char *argv[]) 296{ 297 FILE *file; 298 const char *sqlstr, *manconf = NULL; 299 char *line, *command, *parent; 300 char *errmsg; 301 int ch; 302 struct mparse *mp; 303 sqlite3 *db; 304 ssize_t len; 305 size_t linesize; 306 struct mandb_rec rec; 307 308 while ((ch = getopt(argc, argv, "C:floQqv")) != -1) { 309 switch (ch) { 310 case 'C': 311 manconf = optarg; 312 break; 313 case 'f': 314 mflags.recreate = 1; 315 break; 316 case 'l': 317 mflags.limit = 1; 318 break; 319 case 'o': 320 mflags.optimize = 1; 321 break; 322 case 'Q': 323 mflags.verbosity = 0; 324 break; 325 case 'q': 326 mflags.verbosity = 1; 327 break; 328 case 'v': 329 mflags.verbosity = 2; 330 break; 331 default: 332 usage(); 333 } 334 } 335 336 memset(&rec, 0, sizeof(rec)); 337 338 init_secbuffs(&rec); 339 mp = mparse_alloc(MPARSE_AUTO, MANDOCLEVEL_FATAL, NULL, NULL, NULL); 340 341 if (manconf) { 342 char *arg; 343 size_t command_len = shquote(manconf, NULL, 0) + 1; 344 arg = emalloc(command_len); 345 shquote(manconf, arg, command_len); 346 easprintf(&command, "man -p -C %s", arg); 347 free(arg); 348 } else { 349 command = estrdup("man -p"); 350 manconf = MANCONF; 351 } 352 353 if (mflags.recreate) { 354 char *dbp = get_dbpath(manconf); 355 /* No error here, it will fail in init_db in the same call */ 356 if (dbp != NULL) 357 remove(dbp); 358 } 359 360 if ((db = init_db(MANDB_CREATE, manconf)) == NULL) 361 exit(EXIT_FAILURE); 362 363 sqlite3_exec(db, "PRAGMA synchronous = 0", NULL, NULL, &errmsg); 364 if (errmsg != NULL) { 365 warnx("%s", errmsg); 366 free(errmsg); 367 close_db(db); 368 exit(EXIT_FAILURE); 369 } 370 371 sqlite3_exec(db, "ATTACH DATABASE \':memory:\' AS metadb", NULL, NULL, 372 &errmsg); 373 if (errmsg != NULL) { 374 warnx("%s", errmsg); 375 free(errmsg); 376 close_db(db); 377 exit(EXIT_FAILURE); 378 } 379 380 381 /* Call man -p to get the list of man page dirs */ 382 if ((file = popen(command, "r")) == NULL) { 383 close_db(db); 384 err(EXIT_FAILURE, "fopen failed"); 385 } 386 free(command); 387 388 /* Begin the transaction for indexing the pages */ 389 sqlite3_exec(db, "BEGIN", NULL, NULL, &errmsg); 390 if (errmsg != NULL) { 391 warnx("%s", errmsg); 392 free(errmsg); 393 exit(EXIT_FAILURE); 394 } 395 396 sqlstr = "CREATE TABLE metadb.file_cache(device, inode, mtime, parent," 397 " file PRIMARY KEY);" 398 "CREATE UNIQUE INDEX metadb.index_file_cache_dev" 399 " ON file_cache (device, inode)"; 400 401 sqlite3_exec(db, sqlstr, NULL, NULL, &errmsg); 402 if (errmsg != NULL) { 403 warnx("%s", errmsg); 404 free(errmsg); 405 close_db(db); 406 exit(EXIT_FAILURE); 407 } 408 409 if (mflags.verbosity) 410 printf("Building temporary file cache\n"); 411 line = NULL; 412 linesize = 0; 413 while ((len = getline(&line, &linesize, file)) != -1) { 414 /* Replace the new line character at the end of string with '\0' */ 415 line[len - 1] = '\0'; 416 parent = estrdup(line); 417 char *pdir = estrdup(dirname(parent)); 418 free(parent); 419 /* Traverse the man page directories and parse the pages */ 420 traversedir(pdir, line, db, mp); 421 free(pdir); 422 } 423 free(line); 424 425 if (pclose(file) == -1) { 426 close_db(db); 427 cleanup(&rec); 428 free_secbuffs(&rec); 429 err(EXIT_FAILURE, "pclose error"); 430 } 431 432 if (mflags.verbosity) 433 printf("Performing index update\n"); 434 update_db(db, mp, &rec); 435 mparse_free(mp); 436 free_secbuffs(&rec); 437 438 /* Commit the transaction */ 439 sqlite3_exec(db, "COMMIT", NULL, NULL, &errmsg); 440 if (errmsg != NULL) { 441 warnx("%s", errmsg); 442 free(errmsg); 443 exit(EXIT_FAILURE); 444 } 445 446 if (mflags.optimize) 447 optimize(db); 448 449 close_db(db); 450 return 0; 451} 452 453/* 454 * traversedir -- 455 * Traverses the given directory recursively and passes all the man page files 456 * in the way to build_file_cache() 457 */ 458static void 459traversedir(const char *parent, const char *file, sqlite3 *db, 460 struct mparse *mp) 461{ 462 struct stat sb; 463 struct dirent *dirp; 464 DIR *dp; 465 char *buf; 466 467 if (stat(file, &sb) < 0) { 468 if (mflags.verbosity) 469 warn("stat failed: %s", file); 470 return; 471 } 472 473 /* If it is a directory, traverse it recursively */ 474 if (S_ISDIR(sb.st_mode)) { 475 if ((dp = opendir(file)) == NULL) { 476 if (mflags.verbosity) 477 warn("opendir error: %s", file); 478 return; 479 } 480 481 while ((dirp = readdir(dp)) != NULL) { 482 /* Avoid . and .. entries in a directory */ 483 if (strncmp(dirp->d_name, ".", 1)) { 484 easprintf(&buf, "%s/%s", file, dirp->d_name); 485 traversedir(parent, buf, db, mp); 486 free(buf); 487 } 488 } 489 closedir(dp); 490 } 491 492 if (!S_ISREG(sb.st_mode) && !S_ISLNK(sb.st_mode)) 493 return; 494 495 if (sb.st_size == 0) { 496 if (mflags.verbosity) 497 warnx("Empty file: %s", file); 498 return; 499 } 500 build_file_cache(db, parent, file, &sb); 501} 502 503/* build_file_cache -- 504 * This function generates an md5 hash of the file passed as its 2nd parameter 505 * and stores it in a temporary table file_cache along with the full file path. 506 * This is done to support incremental updation of the database. 507 * The temporary table file_cache is dropped thereafter in the function 508 * update_db(), once the database has been updated. 509 */ 510static void 511build_file_cache(sqlite3 *db, const char *parent, const char *file, 512 struct stat *sb) 513{ 514 const char *sqlstr; 515 sqlite3_stmt *stmt = NULL; 516 int rc, idx; 517 assert(file != NULL); 518 dev_t device_cache = sb->st_dev; 519 ino_t inode_cache = sb->st_ino; 520 time_t mtime_cache = sb->st_mtime; 521 522 sqlstr = "INSERT INTO metadb.file_cache VALUES (:device, :inode," 523 " :mtime, :parent, :file)"; 524 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 525 if (rc != SQLITE_OK) { 526 if (mflags.verbosity) 527 warnx("%s", sqlite3_errmsg(db)); 528 return; 529 } 530 531 idx = sqlite3_bind_parameter_index(stmt, ":device"); 532 rc = sqlite3_bind_int64(stmt, idx, device_cache); 533 if (rc != SQLITE_OK) { 534 if (mflags.verbosity) 535 warnx("%s", sqlite3_errmsg(db)); 536 sqlite3_finalize(stmt); 537 return; 538 } 539 540 idx = sqlite3_bind_parameter_index(stmt, ":inode"); 541 rc = sqlite3_bind_int64(stmt, idx, inode_cache); 542 if (rc != SQLITE_OK) { 543 if (mflags.verbosity) 544 warnx("%s", sqlite3_errmsg(db)); 545 sqlite3_finalize(stmt); 546 return; 547 } 548 549 idx = sqlite3_bind_parameter_index(stmt, ":mtime"); 550 rc = sqlite3_bind_int64(stmt, idx, mtime_cache); 551 if (rc != SQLITE_OK) { 552 if (mflags.verbosity) 553 warnx("%s", sqlite3_errmsg(db)); 554 sqlite3_finalize(stmt); 555 return; 556 } 557 558 idx = sqlite3_bind_parameter_index(stmt, ":parent"); 559 rc = sqlite3_bind_text(stmt, idx, parent, -1, NULL); 560 if (rc != SQLITE_OK) { 561 if (mflags.verbosity) 562 warnx("%s", sqlite3_errmsg(db)); 563 sqlite3_finalize(stmt); 564 return; 565 } 566 567 idx = sqlite3_bind_parameter_index(stmt, ":file"); 568 rc = sqlite3_bind_text(stmt, idx, file, -1, NULL); 569 if (rc != SQLITE_OK) { 570 if (mflags.verbosity) 571 warnx("%s", sqlite3_errmsg(db)); 572 sqlite3_finalize(stmt); 573 return; 574 } 575 576 sqlite3_step(stmt); 577 sqlite3_finalize(stmt); 578} 579 580static void 581update_existing_entry(sqlite3 *db, const char *file, const char *hash, 582 mandb_rec *rec, int *new_count, int *link_count, int *err_count) 583{ 584 int update_count, rc, idx; 585 const char *inner_sqlstr; 586 sqlite3_stmt *inner_stmt; 587 588 update_count = sqlite3_total_changes(db); 589 inner_sqlstr = "UPDATE mandb_meta SET device = :device," 590 " inode = :inode, mtime = :mtime WHERE" 591 " md5_hash = :md5 AND file = :file AND" 592 " (device <> :device2 OR inode <> " 593 " :inode2 OR mtime <> :mtime2)"; 594 rc = sqlite3_prepare_v2(db, inner_sqlstr, -1, &inner_stmt, NULL); 595 if (rc != SQLITE_OK) { 596 if (mflags.verbosity) 597 warnx("%s", sqlite3_errmsg(db)); 598 return; 599 } 600 idx = sqlite3_bind_parameter_index(inner_stmt, ":device"); 601 sqlite3_bind_int64(inner_stmt, idx, rec->device); 602 idx = sqlite3_bind_parameter_index(inner_stmt, ":inode"); 603 sqlite3_bind_int64(inner_stmt, idx, rec->inode); 604 idx = sqlite3_bind_parameter_index(inner_stmt, ":mtime"); 605 sqlite3_bind_int64(inner_stmt, idx, rec->mtime); 606 idx = sqlite3_bind_parameter_index(inner_stmt, ":md5"); 607 sqlite3_bind_text(inner_stmt, idx, hash, -1, NULL); 608 idx = sqlite3_bind_parameter_index(inner_stmt, ":file"); 609 sqlite3_bind_text(inner_stmt, idx, file, -1, NULL); 610 idx = sqlite3_bind_parameter_index(inner_stmt, ":device2"); 611 sqlite3_bind_int64(inner_stmt, idx, rec->device); 612 idx = sqlite3_bind_parameter_index(inner_stmt, ":inode2"); 613 sqlite3_bind_int64(inner_stmt, idx, rec->inode); 614 idx = sqlite3_bind_parameter_index(inner_stmt, ":mtime2"); 615 sqlite3_bind_int64(inner_stmt, idx, rec->mtime); 616 617 rc = sqlite3_step(inner_stmt); 618 if (rc == SQLITE_DONE) { 619 /* Check if an update has been performed. */ 620 if (update_count != sqlite3_total_changes(db)) { 621 if (mflags.verbosity == 2) 622 printf("Updated %s\n", file); 623 (*new_count)++; 624 } else { 625 /* Otherwise it was a hardlink. */ 626 (*link_count)++; 627 } 628 } else { 629 if (mflags.verbosity == 2) 630 warnx("Could not update the meta data for %s", file); 631 (*err_count)++; 632 } 633 sqlite3_finalize(inner_stmt); 634} 635 636/* read_and_decompress -- 637 * Reads the given file into memory. If it is compressed, decompress 638 * it before returning to the caller. 639 */ 640static int 641read_and_decompress(const char *file, void **bufp, size_t *len) 642{ 643 size_t off; 644 ssize_t r; 645 struct archive *a; 646 struct archive_entry *ae; 647 char *buf; 648 649 if ((a = archive_read_new()) == NULL) 650 errx(EXIT_FAILURE, "memory allocation failed"); 651 652 *bufp = NULL; 653 if (archive_read_support_compression_all(a) != ARCHIVE_OK || 654 archive_read_support_format_raw(a) != ARCHIVE_OK || 655 archive_read_open_filename(a, file, 65536) != ARCHIVE_OK || 656 archive_read_next_header(a, &ae) != ARCHIVE_OK) 657 goto archive_error; 658 *len = 65536; 659 buf = emalloc(*len); 660 off = 0; 661 for (;;) { 662 r = archive_read_data(a, buf + off, *len - off); 663 if (r == ARCHIVE_OK) { 664 archive_read_close(a); 665 *bufp = buf; 666 *len = off; 667 return 0; 668 } 669 if (r <= 0) { 670 free(buf); 671 break; 672 } 673 off += r; 674 if (off == *len) { 675 *len *= 2; 676 if (*len < off) { 677 if (mflags.verbosity) 678 warnx("File too large: %s", file); 679 free(buf); 680 archive_read_close(a); 681 return -1; 682 } 683 buf = erealloc(buf, *len); 684 } 685 } 686 687archive_error: 688 warnx("Error while reading `%s': %s", file, archive_error_string(a)); 689 archive_read_close(a); 690 return -1; 691} 692 693/* update_db -- 694 * Does an incremental updation of the database by checking the file_cache. 695 * It parses and adds the pages which are present in file_cache, 696 * but not in the database. 697 * It also removes the pages which are present in the databse, 698 * but not in the file_cache. 699 */ 700static void 701update_db(sqlite3 *db, struct mparse *mp, mandb_rec *rec) 702{ 703 const char *sqlstr; 704 sqlite3_stmt *stmt = NULL; 705 char *file; 706 char *parent; 707 char *errmsg = NULL; 708 char *md5sum; 709 void *buf; 710 size_t buflen; 711 struct sql_row { 712 struct sql_row *next; 713 dev_t device; 714 ino_t inode; 715 time_t mtime; 716 char *parent; 717 char *file; 718 } *rows, *row; 719 int new_count = 0; /* Counter for newly indexed/updated pages */ 720 int total_count = 0; /* Counter for total number of pages */ 721 int err_count = 0; /* Counter for number of failed pages */ 722 int link_count = 0; /* Counter for number of hard/sym links */ 723 int md5_status; 724 int rc; 725 726 sqlstr = "SELECT device, inode, mtime, parent, file" 727 " FROM metadb.file_cache fc" 728 " WHERE NOT EXISTS(SELECT 1 FROM mandb_meta WHERE" 729 " device = fc.device AND inode = fc.inode AND " 730 " mtime = fc.mtime AND file = fc.file)"; 731 732 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 733 if (rc != SQLITE_OK) { 734 if (mflags.verbosity) 735 warnx("%s", sqlite3_errmsg(db)); 736 close_db(db); 737 errx(EXIT_FAILURE, "Could not query file cache"); 738 } 739 740 buf = NULL; 741 rows = NULL; 742 while (sqlite3_step(stmt) == SQLITE_ROW) { 743 row = emalloc(sizeof(struct sql_row)); 744 row->device = sqlite3_column_int64(stmt, 0); 745 row->inode = sqlite3_column_int64(stmt, 1); 746 row->mtime = sqlite3_column_int64(stmt, 2); 747 row->parent = estrdup((const char *) sqlite3_column_text(stmt, 3)); 748 row->file = estrdup((const char *) sqlite3_column_text(stmt, 4)); 749 row->next = rows; 750 rows = row; 751 total_count++; 752 } 753 sqlite3_finalize(stmt); 754 755 for ( ; rows != NULL; free(parent), free(file), free(buf)) { 756 row = rows; 757 rows = rows->next; 758 759 rec->device = row->device; 760 rec->inode = row->inode; 761 rec->mtime = row->mtime; 762 parent = row->parent; 763 file = row->file; 764 free(row); 765 766 if (read_and_decompress(file, &buf, &buflen)) { 767 err_count++; 768 continue; 769 } 770 md5_status = check_md5(file, db, "mandb_meta", &md5sum, buf, buflen); 771 assert(md5sum != NULL); 772 if (md5_status == -1) { 773 if (mflags.verbosity) 774 warnx("An error occurred in checking md5 value" 775 " for file %s", file); 776 err_count++; 777 continue; 778 } 779 780 if (md5_status == 0) { 781 /* 782 * The MD5 hash is already present in the database, 783 * so simply update the metadata, ignoring symlinks. 784 */ 785 struct stat sb; 786 stat(file, &sb); 787 if (S_ISLNK(sb.st_mode)) { 788 free(md5sum); 789 link_count++; 790 continue; 791 } 792 update_existing_entry(db, file, md5sum, rec, 793 &new_count, &link_count, &err_count); 794 free(md5sum); 795 continue; 796 } 797 798 if (md5_status == 1) { 799 /* 800 * The MD5 hash was not present in the database. 801 * This means is either a new file or an updated file. 802 * We should go ahead with parsing. 803 */ 804 if (mflags.verbosity == 2) 805 printf("Parsing: %s\n", file); 806 rec->md5_hash = md5sum; 807 rec->file_path = estrdup(file); 808 // file_path is freed by insert_into_db itself. 809 chdir(parent); 810 begin_parse(file, mp, rec, buf, buflen); 811 if (insert_into_db(db, rec) < 0) { 812 if (mflags.verbosity) 813 warnx("Error in indexing %s", file); 814 err_count++; 815 } else { 816 new_count++; 817 } 818 } 819 } 820 821 if (mflags.verbosity == 2) { 822 printf("Total Number of new or updated pages encountered = %d\n" 823 "Total number of (hard or symbolic) links found = %d\n" 824 "Total number of pages that were successfully" 825 " indexed/updated = %d\n" 826 "Total number of pages that could not be indexed" 827 " due to errors = %d\n", 828 total_count - link_count, link_count, new_count, err_count); 829 } 830 831 if (mflags.recreate) 832 return; 833 834 if (mflags.verbosity == 2) 835 printf("Deleting stale index entries\n"); 836 837 sqlstr = "DELETE FROM mandb_meta WHERE file NOT IN" 838 " (SELECT file FROM metadb.file_cache);" 839 "DELETE FROM mandb_links WHERE md5_hash NOT IN" 840 " (SELECT md5_hash from mandb_meta);" 841 "DROP TABLE metadb.file_cache;" 842 "DELETE FROM mandb WHERE rowid NOT IN" 843 " (SELECT id FROM mandb_meta);"; 844 845 sqlite3_exec(db, sqlstr, NULL, NULL, &errmsg); 846 if (errmsg != NULL) { 847 warnx("Removing old entries failed: %s", errmsg); 848 warnx("Please rebuild database from scratch with -f."); 849 free(errmsg); 850 return; 851 } 852} 853 854/* 855 * begin_parse -- 856 * parses the man page using libmandoc 857 */ 858static void 859begin_parse(const char *file, struct mparse *mp, mandb_rec *rec, 860 const void *buf, size_t len) 861{ 862 struct mdoc *mdoc; 863 struct man *man; 864 mparse_reset(mp); 865 866 rec->xr_found = 0; 867 868 if (mparse_readmem(mp, buf, len, file) >= MANDOCLEVEL_FATAL) { 869 /* Printing this warning at verbosity level 2 870 * because some packages from pkgsrc might trigger several 871 * of such warnings. 872 */ 873 if (mflags.verbosity == 2) 874 warnx("%s: Parse failure", file); 875 return; 876 } 877 878 mparse_result(mp, &mdoc, &man); 879 if (mdoc == NULL && man == NULL) { 880 if (mflags.verbosity == 2) 881 warnx("Not a man(7) or mdoc(7) page"); 882 return; 883 } 884 885 set_machine(mdoc, rec); 886 set_section(mdoc, man, rec); 887 if (mdoc) { 888 rec->page_type = MDOC; 889 pmdoc_node(mdoc_node(mdoc), rec); 890 } else { 891 rec->page_type = MAN; 892 pman_node(man_node(man), rec); 893 } 894} 895 896/* 897 * set_section -- 898 * Extracts the section number and normalizes it to only the numeric part 899 * (Which should be the first character of the string). 900 */ 901static void 902set_section(const struct mdoc *md, const struct man *m, mandb_rec *rec) 903{ 904 if (md) { 905 const struct mdoc_meta *md_meta = mdoc_meta(md); 906 rec->section[0] = md_meta->msec[0]; 907 } else if (m) { 908 const struct man_meta *m_meta = man_meta(m); 909 rec->section[0] = m_meta->msec[0]; 910 } 911} 912 913/* 914 * get_machine -- 915 * Extracts the machine architecture information if available. 916 */ 917static void 918set_machine(const struct mdoc *md, mandb_rec *rec) 919{ 920 if (md == NULL) 921 return; 922 const struct mdoc_meta *md_meta = mdoc_meta(md); 923 if (md_meta->arch) 924 rec->machine = estrdup(md_meta->arch); 925} 926 927static void 928pmdoc_node(const struct mdoc_node *n, mandb_rec *rec) 929{ 930 931 if (n == NULL) 932 return; 933 934 switch (n->type) { 935 case (MDOC_BODY): 936 /* FALLTHROUGH */ 937 case (MDOC_TAIL): 938 /* FALLTHROUGH */ 939 case (MDOC_ELEM): 940 if (mdocs[n->tok] == NULL) 941 break; 942 (*mdocs[n->tok])(n, rec); 943 break; 944 default: 945 break; 946 } 947 948 pmdoc_node(n->child, rec); 949 pmdoc_node(n->next, rec); 950} 951 952/* 953 * pmdoc_Nm -- 954 * Extracts the Name of the manual page from the .Nm macro 955 */ 956static void 957pmdoc_Nm(const struct mdoc_node *n, mandb_rec *rec) 958{ 959 if (n->sec != SEC_NAME) 960 return; 961 962 for (n = n->child; n; n = n->next) { 963 if (n->type == MDOC_TEXT) { 964 concat(&rec->name, n->string); 965 } 966 } 967} 968 969/* 970 * pmdoc_Nd -- 971 * Extracts the one line description of the man page from the .Nd macro 972 */ 973static void 974pmdoc_Nd(const struct mdoc_node *n, mandb_rec *rec) 975{ 976 char *buf = NULL; 977 char *name; 978 char *nd_text; 979 980 if (n == NULL || (n->type != MDOC_TEXT && n->tok == MDOC_MAX)) 981 return; 982 983 if (n->type == MDOC_TEXT) { 984 if (rec->xr_found && n->next) { 985 /* 986 * An Xr macro was seen previously, so parse this 987 * and the next node, as "Name(Section)". 988 */ 989 name = n->string; 990 n = n->next; 991 assert(n->type == MDOC_TEXT); 992 easprintf(&buf, "%s(%s)", name, n->string); 993 concat(&rec->name_desc, buf); 994 free(buf); 995 } else { 996 nd_text = estrdup(n->string); 997 replace_hyph(nd_text); 998 concat(&rec->name_desc, nd_text); 999 free(nd_text); 1000 } 1001 rec->xr_found = 0; 1002 } else if (mdocs[n->tok] == pmdoc_Xr) { 1003 /* Remember that we have encountered an Xr macro */ 1004 rec->xr_found = 1; 1005 } 1006 1007 if (n->child) 1008 pmdoc_Nd(n->child, rec); 1009 1010 if(n->next) 1011 pmdoc_Nd(n->next, rec); 1012} 1013 1014/* 1015 * pmdoc_macro_handler-- 1016 * This function is a single point of handling all the special macros that we 1017 * want to handle especially. For example the .Xr macro for properly parsing 1018 * the referenced page name along with the section number, or the .Pp macro 1019 * for adding a new line whenever we encounter it. 1020 */ 1021static void 1022pmdoc_macro_handler(const struct mdoc_node *n, mandb_rec *rec, enum mdoct doct) 1023{ 1024 const struct mdoc_node *sn; 1025 assert(n); 1026 1027 switch (doct) { 1028 /* Parse the man page references. 1029 * Basically the .Xr macros are used like: 1030 * .Xr ls 1 1031 * and formatted like this: 1032 * ls(1) 1033 * Prepare a buffer to format the data like the above example and call 1034 * pmdoc_parse_section to append it. 1035 */ 1036 case MDOC_Xr: 1037 n = n->child; 1038 while (n->type != MDOC_TEXT && n->next) 1039 n = n->next; 1040 1041 if (n && n->type != MDOC_TEXT) 1042 return; 1043 sn = n; 1044 if (n->next) 1045 n = n->next; 1046 1047 while (n->type != MDOC_TEXT && n->next) 1048 n = n->next; 1049 1050 if (n && n->type == MDOC_TEXT) { 1051 char *buf; 1052 easprintf(&buf, "%s(%s)", sn->string, n->string); 1053 mdoc_parse_section(n->sec, buf, rec); 1054 free(buf); 1055 } 1056 1057 break; 1058 1059 /* Parse the .Pp macro to add a new line */ 1060 case MDOC_Pp: 1061 if (n->type == MDOC_TEXT) 1062 mdoc_parse_section(n->sec, "\n", rec); 1063 break; 1064 default: 1065 break; 1066 } 1067 1068} 1069 1070/* 1071 * pmdoc_Xr, pmdoc_Pp-- 1072 * Empty stubs. 1073 * The parser calls these functions each time it encounters 1074 * a .Xr or .Pp macro. We are parsing all the data from 1075 * the pmdoc_Sh function, so don't do anything here. 1076 * (See if else blocks in pmdoc_Sh.) 1077 */ 1078static void 1079pmdoc_Xr(const struct mdoc_node *n, mandb_rec *rec) 1080{ 1081} 1082 1083static void 1084pmdoc_Pp(const struct mdoc_node *n, mandb_rec *rec) 1085{ 1086} 1087 1088/* 1089 * pmdoc_Sh -- 1090 * Called when a .Sh macro is encountered and loops through its body, calling 1091 * mdoc_parse_section to append the data to the section specific buffer. 1092 * Two special macros which may occur inside the body of Sh are .Nm and .Xr and 1093 * they need special handling, thus the separate if branches for them. 1094 */ 1095static void 1096pmdoc_Sh(const struct mdoc_node *n, mandb_rec *rec) 1097{ 1098 if (n == NULL || (n->type != MDOC_TEXT && n->tok == MDOC_MAX)) 1099 return; 1100 int xr_found = 0; 1101 1102 if (n->type == MDOC_TEXT) { 1103 mdoc_parse_section(n->sec, n->string, rec); 1104 } else if (mdocs[n->tok] == pmdoc_Nm && rec->name != NULL) { 1105 /* 1106 * When encountering a .Nm macro, substitute it 1107 * with its previously cached value of the argument. 1108 */ 1109 mdoc_parse_section(n->sec, rec->name, rec); 1110 } else if (mdocs[n->tok] == pmdoc_Xr) { 1111 /* 1112 * When encountering other inline macros, 1113 * call pmdoc_macro_handler. 1114 */ 1115 pmdoc_macro_handler(n, rec, MDOC_Xr); 1116 xr_found = 1; 1117 } else if (mdocs[n->tok] == pmdoc_Pp) { 1118 pmdoc_macro_handler(n, rec, MDOC_Pp); 1119 } 1120 1121 /* 1122 * If an Xr macro was encountered then the child node has 1123 * already been explored by pmdoc_macro_handler. 1124 */ 1125 if (xr_found == 0) 1126 pmdoc_Sh(n->child, rec); 1127 pmdoc_Sh(n->next, rec); 1128} 1129 1130/* 1131 * mdoc_parse_section-- 1132 * Utility function for parsing sections of the mdoc type pages. 1133 * Takes two params: 1134 * 1. sec is an enum which indicates the section in which we are present 1135 * 2. string is the string which we need to append to the secbuff for this 1136 * particular section. 1137 * The function appends string to the global section buffer and returns. 1138 */ 1139static void 1140mdoc_parse_section(enum mdoc_sec sec, const char *string, mandb_rec *rec) 1141{ 1142 /* 1143 * If the user specified the 'l' flag, then parse and store only the 1144 * NAME section. Ignore the rest. 1145 */ 1146 if (mflags.limit) 1147 return; 1148 1149 switch (sec) { 1150 case SEC_LIBRARY: 1151 append(&rec->lib, string); 1152 break; 1153 case SEC_RETURN_VALUES: 1154 append(&rec->return_vals, string); 1155 break; 1156 case SEC_ENVIRONMENT: 1157 append(&rec->env, string); 1158 break; 1159 case SEC_FILES: 1160 append(&rec->files, string); 1161 break; 1162 case SEC_EXIT_STATUS: 1163 append(&rec->exit_status, string); 1164 break; 1165 case SEC_DIAGNOSTICS: 1166 append(&rec->diagnostics, string); 1167 break; 1168 case SEC_ERRORS: 1169 append(&rec->errors, string); 1170 break; 1171 case SEC_NAME: 1172 case SEC_SYNOPSIS: 1173 case SEC_EXAMPLES: 1174 case SEC_STANDARDS: 1175 case SEC_HISTORY: 1176 case SEC_AUTHORS: 1177 case SEC_BUGS: 1178 break; 1179 default: 1180 append(&rec->desc, string); 1181 break; 1182 } 1183} 1184 1185static void 1186pman_node(const struct man_node *n, mandb_rec *rec) 1187{ 1188 if (n == NULL) 1189 return; 1190 1191 switch (n->type) { 1192 case (MAN_BODY): 1193 /* FALLTHROUGH */ 1194 case (MAN_TAIL): 1195 /* FALLTHROUGH */ 1196 case (MAN_BLOCK): 1197 /* FALLTHROUGH */ 1198 case (MAN_ELEM): 1199 if (mans[n->tok] != NULL) 1200 (*mans[n->tok])(n, rec); 1201 break; 1202 default: 1203 break; 1204 } 1205 1206 pman_node(n->child, rec); 1207 pman_node(n->next, rec); 1208} 1209 1210/* 1211 * pman_parse_name -- 1212 * Parses the NAME section and puts the complete content in the name_desc 1213 * variable. 1214 */ 1215static void 1216pman_parse_name(const struct man_node *n, mandb_rec *rec) 1217{ 1218 if (n == NULL) 1219 return; 1220 1221 if (n->type == MAN_TEXT) { 1222 char *tmp = parse_escape(n->string); 1223 concat(&rec->name_desc, tmp); 1224 free(tmp); 1225 } 1226 1227 if (n->child) 1228 pman_parse_name(n->child, rec); 1229 1230 if(n->next) 1231 pman_parse_name(n->next, rec); 1232} 1233 1234/* 1235 * A stub function to be able to parse the macros like .B embedded inside 1236 * a section. 1237 */ 1238static void 1239pman_block(const struct man_node *n, mandb_rec *rec) 1240{ 1241} 1242 1243/* 1244 * pman_sh -- 1245 * This function does one of the two things: 1246 * 1. If the present section is NAME, then it will: 1247 * (a) Extract the name of the page (in case of multiple comma separated 1248 * names, it will pick up the first one). 1249 * (b) Build a space spearated list of all the symlinks/hardlinks to 1250 * this page and store in the buffer 'links'. These are extracted from 1251 * the comma separated list of names in the NAME section as well. 1252 * (c) Move on to the one line description section, which is after the list 1253 * of names in the NAME section. 1254 * 2. Otherwise, it will check the section name and call the man_parse_section 1255 * function, passing the enum corresponding that section. 1256 */ 1257static void 1258pman_sh(const struct man_node *n, mandb_rec *rec) 1259{ 1260 static const struct { 1261 enum man_sec section; 1262 const char *header; 1263 } mapping[] = { 1264 { MANSEC_DESCRIPTION, "DESCRIPTION" }, 1265 { MANSEC_SYNOPSIS, "SYNOPSIS" }, 1266 { MANSEC_LIBRARY, "LIBRARY" }, 1267 { MANSEC_ERRORS, "ERRORS" }, 1268 { MANSEC_FILES, "FILES" }, 1269 { MANSEC_RETURN_VALUES, "RETURN VALUE" }, 1270 { MANSEC_RETURN_VALUES, "RETURN VALUES" }, 1271 { MANSEC_EXIT_STATUS, "EXIT STATUS" }, 1272 { MANSEC_EXAMPLES, "EXAMPLES" }, 1273 { MANSEC_EXAMPLES, "EXAMPLE" }, 1274 { MANSEC_STANDARDS, "STANDARDS" }, 1275 { MANSEC_HISTORY, "HISTORY" }, 1276 { MANSEC_BUGS, "BUGS" }, 1277 { MANSEC_AUTHORS, "AUTHORS" }, 1278 { MANSEC_COPYRIGHT, "COPYRIGHT" }, 1279 }; 1280 const struct man_node *head; 1281 char *name_desc; 1282 int sz; 1283 size_t i; 1284 1285 if ((head = n->parent->head) == NULL || (head = head->child) == NULL || 1286 head->type != MAN_TEXT) 1287 return; 1288 1289 /* 1290 * Check if this section should be extracted and 1291 * where it should be stored. Handled the trival cases first. 1292 */ 1293 for (i = 0; i < sizeof(mapping) / sizeof(mapping[0]); ++i) { 1294 if (strcmp(head->string, mapping[i].header) == 0) { 1295 man_parse_section(mapping[i].section, n, rec); 1296 return; 1297 } 1298 } 1299 1300 if (strcmp(head->string, "NAME") == 0) { 1301 /* 1302 * We are in the NAME section. 1303 * pman_parse_name will put the complete content in name_desc. 1304 */ 1305 pman_parse_name(n, rec); 1306 1307 name_desc = rec->name_desc; 1308 if (name_desc == NULL) 1309 return; 1310 1311 /* Remove any leading spaces. */ 1312 while (name_desc[0] == ' ') 1313 name_desc++; 1314 1315 /* If the line begins with a "\&", avoid those */ 1316 if (name_desc[0] == '\\' && name_desc[1] == '&') 1317 name_desc += 2; 1318 1319 /* Now name_desc should be left with a comma-space 1320 * separated list of names and the one line description 1321 * of the page: 1322 * "a, b, c \- sample description" 1323 * Take out the first name, before the first comma 1324 * (or space) and store it in rec->name. 1325 * If the page has aliases then they should be 1326 * in the form of a comma separated list. 1327 * Keep looping while there is a comma in name_desc, 1328 * extract the alias name and store in rec->links. 1329 * When there are no more commas left, break out. 1330 */ 1331 int has_alias = 0; // Any more aliases left? 1332 while (*name_desc) { 1333 /* Remove any leading spaces or hyphens. */ 1334 if (name_desc[0] == ' ' || name_desc[0] =='-') { 1335 name_desc++; 1336 continue; 1337 } 1338 sz = strcspn(name_desc, ", "); 1339 1340 /* Extract the first term and store it in rec->name. */ 1341 if (rec->name == NULL) { 1342 if (name_desc[sz] == ',') 1343 has_alias = 1; 1344 name_desc[sz] = 0; 1345 rec->name = emalloc(sz + 1); 1346 memcpy(rec->name, name_desc, sz + 1); 1347 name_desc += sz + 1; 1348 continue; 1349 } 1350 1351 /* 1352 * Once rec->name is set, rest of the names 1353 * are to be treated as links or aliases. 1354 */ 1355 if (rec->name && has_alias) { 1356 if (name_desc[sz] != ',') { 1357 /* No more commas left --> 1358 * no more aliases to take out 1359 */ 1360 has_alias = 0; 1361 } 1362 name_desc[sz] = 0; 1363 concat2(&rec->links, name_desc, sz); 1364 name_desc += sz + 1; 1365 continue; 1366 } 1367 break; 1368 } 1369 1370 /* Parse any escape sequences that might be there */ 1371 char *temp = parse_escape(name_desc); 1372 free(rec->name_desc); 1373 rec->name_desc = temp; 1374 temp = parse_escape(rec->name); 1375 free(rec->name); 1376 rec->name = temp; 1377 return; 1378 } 1379 1380 /* The RETURN VALUE section might be specified in multiple ways */ 1381 if (strcmp(head->string, "RETURN") == 0 && 1382 head->next != NULL && head->next->type == MAN_TEXT && 1383 (strcmp(head->next->string, "VALUE") == 0 || 1384 strcmp(head->next->string, "VALUES") == 0)) { 1385 man_parse_section(MANSEC_RETURN_VALUES, n, rec); 1386 return; 1387 } 1388 1389 /* 1390 * EXIT STATUS section can also be specified all on one line or on two 1391 * separate lines. 1392 */ 1393 if (strcmp(head->string, "EXIT") == 0 && 1394 head->next != NULL && head->next->type == MAN_TEXT && 1395 strcmp(head->next->string, "STATUS") == 0) { 1396 man_parse_section(MANSEC_EXIT_STATUS, n, rec); 1397 return; 1398 } 1399 1400 /* Store the rest of the content in desc. */ 1401 man_parse_section(MANSEC_NONE, n, rec); 1402} 1403 1404/* 1405 * pman_parse_node -- 1406 * Generic function to iterate through a node. Usually called from 1407 * man_parse_section to parse a particular section of the man page. 1408 */ 1409static void 1410pman_parse_node(const struct man_node *n, secbuff *s) 1411{ 1412 if (n == NULL) 1413 return; 1414 1415 if (n->type == MAN_TEXT) 1416 append(s, n->string); 1417 1418 pman_parse_node(n->child, s); 1419 pman_parse_node(n->next, s); 1420} 1421 1422/* 1423 * man_parse_section -- 1424 * Takes two parameters: 1425 * sec: Tells which section we are present in 1426 * n: Is the present node of the AST. 1427 * Depending on the section, we call pman_parse_node to parse that section and 1428 * concatenate the content from that section into the buffer for that section. 1429 */ 1430static void 1431man_parse_section(enum man_sec sec, const struct man_node *n, mandb_rec *rec) 1432{ 1433 /* 1434 * If the user sepecified the 'l' flag then just parse 1435 * the NAME section, ignore the rest. 1436 */ 1437 if (mflags.limit) 1438 return; 1439 1440 switch (sec) { 1441 case MANSEC_LIBRARY: 1442 pman_parse_node(n, &rec->lib); 1443 break; 1444 case MANSEC_RETURN_VALUES: 1445 pman_parse_node(n, &rec->return_vals); 1446 break; 1447 case MANSEC_ENVIRONMENT: 1448 pman_parse_node(n, &rec->env); 1449 break; 1450 case MANSEC_FILES: 1451 pman_parse_node(n, &rec->files); 1452 break; 1453 case MANSEC_EXIT_STATUS: 1454 pman_parse_node(n, &rec->exit_status); 1455 break; 1456 case MANSEC_DIAGNOSTICS: 1457 pman_parse_node(n, &rec->diagnostics); 1458 break; 1459 case MANSEC_ERRORS: 1460 pman_parse_node(n, &rec->errors); 1461 break; 1462 case MANSEC_NAME: 1463 case MANSEC_SYNOPSIS: 1464 case MANSEC_EXAMPLES: 1465 case MANSEC_STANDARDS: 1466 case MANSEC_HISTORY: 1467 case MANSEC_BUGS: 1468 case MANSEC_AUTHORS: 1469 case MANSEC_COPYRIGHT: 1470 break; 1471 default: 1472 pman_parse_node(n, &rec->desc); 1473 break; 1474 } 1475 1476} 1477 1478/* 1479 * insert_into_db -- 1480 * Inserts the parsed data of the man page in the Sqlite databse. 1481 * If any of the values is NULL, then we cleanup and return -1 indicating 1482 * an error. 1483 * Otherwise, store the data in the database and return 0. 1484 */ 1485static int 1486insert_into_db(sqlite3 *db, mandb_rec *rec) 1487{ 1488 int rc = 0; 1489 int idx = -1; 1490 const char *sqlstr = NULL; 1491 sqlite3_stmt *stmt = NULL; 1492 char *ln = NULL; 1493 char *errmsg = NULL; 1494 long int mandb_rowid; 1495 1496 /* 1497 * At the very minimum we want to make sure that we store 1498 * the following data: 1499 * Name, one line description, and the MD5 hash 1500 */ 1501 if (rec->name == NULL || rec->name_desc == NULL || 1502 rec->md5_hash == NULL) { 1503 cleanup(rec); 1504 return -1; 1505 } 1506 1507 /* Write null byte at the end of all the sec_buffs */ 1508 rec->desc.data[rec->desc.offset] = 0; 1509 rec->lib.data[rec->lib.offset] = 0; 1510 rec->env.data[rec->env.offset] = 0; 1511 rec->return_vals.data[rec->return_vals.offset] = 0; 1512 rec->exit_status.data[rec->exit_status.offset] = 0; 1513 rec->files.data[rec->files.offset] = 0; 1514 rec->diagnostics.data[rec->diagnostics.offset] = 0; 1515 rec->errors.data[rec->errors.offset] = 0; 1516 1517 /* 1518 * In case of a mdoc page: (sorry, no better place to put this code) 1519 * parse the comma separated list of names of man pages, 1520 * the first name will be stored in the mandb table, rest will be 1521 * treated as links and put in the mandb_links table. 1522 */ 1523 if (rec->page_type == MDOC) { 1524 char *tmp; 1525 rec->links = estrdup(rec->name); 1526 free(rec->name); 1527 int sz = strcspn(rec->links, " \0"); 1528 rec->name = emalloc(sz + 1); 1529 memcpy(rec->name, rec->links, sz); 1530 if(rec->name[sz - 1] == ',') 1531 rec->name[sz - 1] = 0; 1532 else 1533 rec->name[sz] = 0; 1534 while (rec->links[sz] == ' ') 1535 ++sz; 1536 tmp = estrdup(rec->links + sz); 1537 free(rec->links); 1538 rec->links = tmp; 1539 } 1540 1541/*------------------------ Populate the mandb table---------------------------*/ 1542 sqlstr = "INSERT INTO mandb VALUES (:section, :name, :name_desc, :desc," 1543 " :lib, :return_vals, :env, :files, :exit_status," 1544 " :diagnostics, :errors, :md5_hash, :machine)"; 1545 1546 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1547 if (rc != SQLITE_OK) 1548 goto Out; 1549 1550 idx = sqlite3_bind_parameter_index(stmt, ":name"); 1551 rc = sqlite3_bind_text(stmt, idx, rec->name, -1, NULL); 1552 if (rc != SQLITE_OK) { 1553 sqlite3_finalize(stmt); 1554 goto Out; 1555 } 1556 1557 idx = sqlite3_bind_parameter_index(stmt, ":section"); 1558 rc = sqlite3_bind_text(stmt, idx, rec->section, -1, NULL); 1559 if (rc != SQLITE_OK) { 1560 sqlite3_finalize(stmt); 1561 goto Out; 1562 } 1563 1564 idx = sqlite3_bind_parameter_index(stmt, ":name_desc"); 1565 rc = sqlite3_bind_text(stmt, idx, rec->name_desc, -1, NULL); 1566 if (rc != SQLITE_OK) { 1567 sqlite3_finalize(stmt); 1568 goto Out; 1569 } 1570 1571 idx = sqlite3_bind_parameter_index(stmt, ":desc"); 1572 rc = sqlite3_bind_text(stmt, idx, rec->desc.data, 1573 rec->desc.offset + 1, NULL); 1574 if (rc != SQLITE_OK) { 1575 sqlite3_finalize(stmt); 1576 goto Out; 1577 } 1578 1579 idx = sqlite3_bind_parameter_index(stmt, ":lib"); 1580 rc = sqlite3_bind_text(stmt, idx, rec->lib.data, rec->lib.offset + 1, NULL); 1581 if (rc != SQLITE_OK) { 1582 sqlite3_finalize(stmt); 1583 goto Out; 1584 } 1585 1586 idx = sqlite3_bind_parameter_index(stmt, ":return_vals"); 1587 rc = sqlite3_bind_text(stmt, idx, rec->return_vals.data, 1588 rec->return_vals.offset + 1, NULL); 1589 if (rc != SQLITE_OK) { 1590 sqlite3_finalize(stmt); 1591 goto Out; 1592 } 1593 1594 idx = sqlite3_bind_parameter_index(stmt, ":env"); 1595 rc = sqlite3_bind_text(stmt, idx, rec->env.data, rec->env.offset + 1, NULL); 1596 if (rc != SQLITE_OK) { 1597 sqlite3_finalize(stmt); 1598 goto Out; 1599 } 1600 1601 idx = sqlite3_bind_parameter_index(stmt, ":files"); 1602 rc = sqlite3_bind_text(stmt, idx, rec->files.data, 1603 rec->files.offset + 1, NULL); 1604 if (rc != SQLITE_OK) { 1605 sqlite3_finalize(stmt); 1606 goto Out; 1607 } 1608 1609 idx = sqlite3_bind_parameter_index(stmt, ":exit_status"); 1610 rc = sqlite3_bind_text(stmt, idx, rec->exit_status.data, 1611 rec->exit_status.offset + 1, NULL); 1612 if (rc != SQLITE_OK) { 1613 sqlite3_finalize(stmt); 1614 goto Out; 1615 } 1616 1617 idx = sqlite3_bind_parameter_index(stmt, ":diagnostics"); 1618 rc = sqlite3_bind_text(stmt, idx, rec->diagnostics.data, 1619 rec->diagnostics.offset + 1, NULL); 1620 if (rc != SQLITE_OK) { 1621 sqlite3_finalize(stmt); 1622 goto Out; 1623 } 1624 1625 idx = sqlite3_bind_parameter_index(stmt, ":errors"); 1626 rc = sqlite3_bind_text(stmt, idx, rec->errors.data, 1627 rec->errors.offset + 1, NULL); 1628 if (rc != SQLITE_OK) { 1629 sqlite3_finalize(stmt); 1630 goto Out; 1631 } 1632 1633 idx = sqlite3_bind_parameter_index(stmt, ":md5_hash"); 1634 rc = sqlite3_bind_text(stmt, idx, rec->md5_hash, -1, NULL); 1635 if (rc != SQLITE_OK) { 1636 sqlite3_finalize(stmt); 1637 goto Out; 1638 } 1639 1640 idx = sqlite3_bind_parameter_index(stmt, ":machine"); 1641 if (rec->machine) 1642 rc = sqlite3_bind_text(stmt, idx, rec->machine, -1, NULL); 1643 else 1644 rc = sqlite3_bind_null(stmt, idx); 1645 if (rc != SQLITE_OK) { 1646 sqlite3_finalize(stmt); 1647 goto Out; 1648 } 1649 1650 rc = sqlite3_step(stmt); 1651 if (rc != SQLITE_DONE) { 1652 sqlite3_finalize(stmt); 1653 goto Out; 1654 } 1655 1656 sqlite3_finalize(stmt); 1657 1658 /* Get the row id of the last inserted row */ 1659 mandb_rowid = sqlite3_last_insert_rowid(db); 1660 1661/*------------------------Populate the mandb_meta table-----------------------*/ 1662 sqlstr = "INSERT INTO mandb_meta VALUES (:device, :inode, :mtime," 1663 " :file, :md5_hash, :id)"; 1664 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1665 if (rc != SQLITE_OK) 1666 goto Out; 1667 1668 idx = sqlite3_bind_parameter_index(stmt, ":device"); 1669 rc = sqlite3_bind_int64(stmt, idx, rec->device); 1670 if (rc != SQLITE_OK) { 1671 sqlite3_finalize(stmt); 1672 goto Out; 1673 } 1674 1675 idx = sqlite3_bind_parameter_index(stmt, ":inode"); 1676 rc = sqlite3_bind_int64(stmt, idx, rec->inode); 1677 if (rc != SQLITE_OK) { 1678 sqlite3_finalize(stmt); 1679 goto Out; 1680 } 1681 1682 idx = sqlite3_bind_parameter_index(stmt, ":mtime"); 1683 rc = sqlite3_bind_int64(stmt, idx, rec->mtime); 1684 if (rc != SQLITE_OK) { 1685 sqlite3_finalize(stmt); 1686 goto Out; 1687 } 1688 1689 idx = sqlite3_bind_parameter_index(stmt, ":file"); 1690 rc = sqlite3_bind_text(stmt, idx, rec->file_path, -1, NULL); 1691 if (rc != SQLITE_OK) { 1692 sqlite3_finalize(stmt); 1693 goto Out; 1694 } 1695 1696 idx = sqlite3_bind_parameter_index(stmt, ":md5_hash"); 1697 rc = sqlite3_bind_text(stmt, idx, rec->md5_hash, -1, NULL); 1698 if (rc != SQLITE_OK) { 1699 sqlite3_finalize(stmt); 1700 goto Out; 1701 } 1702 1703 idx = sqlite3_bind_parameter_index(stmt, ":id"); 1704 rc = sqlite3_bind_int64(stmt, idx, mandb_rowid); 1705 if (rc != SQLITE_OK) { 1706 sqlite3_finalize(stmt); 1707 goto Out; 1708 } 1709 1710 rc = sqlite3_step(stmt); 1711 sqlite3_finalize(stmt); 1712 if (rc == SQLITE_CONSTRAINT_UNIQUE) { 1713 /* The *most* probable reason for reaching here is that 1714 * the UNIQUE contraint on the file column of the mandb_meta 1715 * table was violated. 1716 * This can happen when a file was updated/modified. 1717 * To fix this we need to do two things: 1718 * 1. Delete the row for the older version of this file 1719 * from mandb table. 1720 * 2. Run an UPDATE query to update the row for this file 1721 * in the mandb_meta table. 1722 */ 1723 warnx("Trying to update index for %s", rec->file_path); 1724 char *sql = sqlite3_mprintf("DELETE FROM mandb " 1725 "WHERE rowid = (SELECT id" 1726 " FROM mandb_meta" 1727 " WHERE file = %Q)", 1728 rec->file_path); 1729 sqlite3_exec(db, sql, NULL, NULL, &errmsg); 1730 sqlite3_free(sql); 1731 if (errmsg != NULL) { 1732 if (mflags.verbosity) 1733 warnx("%s", errmsg); 1734 free(errmsg); 1735 } 1736 sqlstr = "UPDATE mandb_meta SET device = :device," 1737 " inode = :inode, mtime = :mtime, id = :id," 1738 " md5_hash = :md5 WHERE file = :file"; 1739 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1740 if (rc != SQLITE_OK) { 1741 if (mflags.verbosity) 1742 warnx("Update failed with error: %s", 1743 sqlite3_errmsg(db)); 1744 close_db(db); 1745 cleanup(rec); 1746 errx(EXIT_FAILURE, 1747 "Consider running makemandb with -f option"); 1748 } 1749 1750 idx = sqlite3_bind_parameter_index(stmt, ":device"); 1751 sqlite3_bind_int64(stmt, idx, rec->device); 1752 idx = sqlite3_bind_parameter_index(stmt, ":inode"); 1753 sqlite3_bind_int64(stmt, idx, rec->inode); 1754 idx = sqlite3_bind_parameter_index(stmt, ":mtime"); 1755 sqlite3_bind_int64(stmt, idx, rec->mtime); 1756 idx = sqlite3_bind_parameter_index(stmt, ":id"); 1757 sqlite3_bind_int64(stmt, idx, mandb_rowid); 1758 idx = sqlite3_bind_parameter_index(stmt, ":md5"); 1759 sqlite3_bind_text(stmt, idx, rec->md5_hash, -1, NULL); 1760 idx = sqlite3_bind_parameter_index(stmt, ":file"); 1761 sqlite3_bind_text(stmt, idx, rec->file_path, -1, NULL); 1762 rc = sqlite3_step(stmt); 1763 sqlite3_finalize(stmt); 1764 1765 if (rc != SQLITE_DONE) { 1766 if (mflags.verbosity) 1767 warnx("%s", sqlite3_errmsg(db)); 1768 close_db(db); 1769 cleanup(rec); 1770 errx(EXIT_FAILURE, 1771 "Consider running makemandb with -f option"); 1772 } 1773 } else if (rc != SQLITE_DONE) { 1774 /* Otherwise make this error fatal */ 1775 warnx("Failed at %s\n%s", rec->file_path, sqlite3_errmsg(db)); 1776 cleanup(rec); 1777 close_db(db); 1778 exit(EXIT_FAILURE); 1779 } 1780 1781/*------------------------ Populate the mandb_links table---------------------*/ 1782 char *str = NULL; 1783 char *links; 1784 if (rec->links && strlen(rec->links)) { 1785 links = rec->links; 1786 for(ln = strtok(links, " "); ln; ln = strtok(NULL, " ")) { 1787 if (ln[0] == ',') 1788 ln++; 1789 if(ln[strlen(ln) - 1] == ',') 1790 ln[strlen(ln) - 1] = 0; 1791 1792 str = sqlite3_mprintf("INSERT INTO mandb_links" 1793 " VALUES (%Q, %Q, %Q, %Q, %Q)", 1794 ln, rec->name, rec->section, 1795 rec->machine, rec->md5_hash); 1796 sqlite3_exec(db, str, NULL, NULL, &errmsg); 1797 sqlite3_free(str); 1798 if (errmsg != NULL) { 1799 warnx("%s", errmsg); 1800 cleanup(rec); 1801 free(errmsg); 1802 return -1; 1803 } 1804 } 1805 } 1806 1807 cleanup(rec); 1808 return 0; 1809 1810 Out: 1811 if (mflags.verbosity) 1812 warnx("%s", sqlite3_errmsg(db)); 1813 cleanup(rec); 1814 return -1; 1815} 1816 1817/* 1818 * check_md5-- 1819 * Generates the md5 hash of the file and checks if it already doesn't exist 1820 * in the table (passed as the 3rd parameter). 1821 * This function is being used to avoid hardlinks. 1822 * On successful completion it will also set the value of the fourth parameter 1823 * to the md5 hash of the file (computed previously). It is the responsibility 1824 * of the caller to free this buffer. 1825 * Return values: 1826 * -1: If an error occurs somewhere and sets the md5 return buffer to NULL. 1827 * 0: If the md5 hash does not exist in the table. 1828 * 1: If the hash exists in the database. 1829 */ 1830static int 1831check_md5(const char *file, sqlite3 *db, const char *table, char **md5sum, 1832 void *buf, size_t buflen) 1833{ 1834 int rc = 0; 1835 int idx = -1; 1836 char *sqlstr = NULL; 1837 sqlite3_stmt *stmt = NULL; 1838 1839 assert(file != NULL); 1840 *md5sum = MD5Data(buf, buflen, NULL); 1841 if (*md5sum == NULL) { 1842 if (mflags.verbosity) 1843 warn("md5 failed: %s", file); 1844 return -1; 1845 } 1846 1847 easprintf(&sqlstr, "SELECT * FROM %s WHERE md5_hash = :md5_hash", 1848 table); 1849 rc = sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL); 1850 if (rc != SQLITE_OK) { 1851 free(sqlstr); 1852 free(*md5sum); 1853 *md5sum = NULL; 1854 return -1; 1855 } 1856 1857 idx = sqlite3_bind_parameter_index(stmt, ":md5_hash"); 1858 rc = sqlite3_bind_text(stmt, idx, *md5sum, -1, NULL); 1859 if (rc != SQLITE_OK) { 1860 if (mflags.verbosity) 1861 warnx("%s", sqlite3_errmsg(db)); 1862 sqlite3_finalize(stmt); 1863 free(sqlstr); 1864 free(*md5sum); 1865 *md5sum = NULL; 1866 return -1; 1867 } 1868 1869 if (sqlite3_step(stmt) == SQLITE_ROW) { 1870 sqlite3_finalize(stmt); 1871 free(sqlstr); 1872 return 0; 1873 } 1874 1875 sqlite3_finalize(stmt); 1876 free(sqlstr); 1877 return 1; 1878} 1879 1880/* Optimize the index for faster search */ 1881static void 1882optimize(sqlite3 *db) 1883{ 1884 const char *sqlstr; 1885 char *errmsg = NULL; 1886 1887 if (mflags.verbosity == 2) 1888 printf("Optimizing the database index\n"); 1889 sqlstr = "INSERT INTO mandb(mandb) VALUES (\'optimize\');" 1890 "VACUUM"; 1891 sqlite3_exec(db, sqlstr, NULL, NULL, &errmsg); 1892 if (errmsg != NULL) { 1893 if (mflags.verbosity) 1894 warnx("%s", errmsg); 1895 free(errmsg); 1896 return; 1897 } 1898} 1899 1900/* 1901 * cleanup -- 1902 * cleans up the global buffers 1903 */ 1904static void 1905cleanup(mandb_rec *rec) 1906{ 1907 rec->desc.offset = 0; 1908 rec->lib.offset = 0; 1909 rec->return_vals.offset = 0; 1910 rec->env.offset = 0; 1911 rec->exit_status.offset = 0; 1912 rec->diagnostics.offset = 0; 1913 rec->errors.offset = 0; 1914 rec->files.offset = 0; 1915 1916 free(rec->machine); 1917 rec->machine = NULL; 1918 1919 free(rec->links); 1920 rec->links = NULL; 1921 1922 free(rec->file_path); 1923 rec->file_path = NULL; 1924 1925 free(rec->name); 1926 rec->name = NULL; 1927 1928 free(rec->name_desc); 1929 rec->name_desc = NULL; 1930 1931 free(rec->md5_hash); 1932 rec->md5_hash = NULL; 1933} 1934 1935/* 1936 * init_secbuffs-- 1937 * Sets the value of buflen for all the sec_buff field of rec. And then 1938 * allocate memory to each sec_buff member of rec. 1939 */ 1940static void 1941init_secbuffs(mandb_rec *rec) 1942{ 1943 /* 1944 * Some sec_buff might need more memory, for example desc, 1945 * which stores the data of the DESCRIPTION section, 1946 * while some might need very small amount of memory. 1947 * Therefore explicitly setting the value of buflen field for 1948 * each sec_buff. 1949 */ 1950 rec->desc.buflen = 10 * BUFLEN; 1951 rec->desc.data = emalloc(rec->desc.buflen); 1952 rec->desc.offset = 0; 1953 1954 rec->lib.buflen = BUFLEN / 2; 1955 rec->lib.data = emalloc(rec->lib.buflen); 1956 rec->lib.offset = 0; 1957 1958 rec->return_vals.buflen = BUFLEN; 1959 rec->return_vals.data = emalloc(rec->return_vals.buflen); 1960 rec->return_vals.offset = 0; 1961 1962 rec->exit_status.buflen = BUFLEN; 1963 rec->exit_status.data = emalloc(rec->exit_status.buflen); 1964 rec->exit_status.offset = 0; 1965 1966 rec->env.buflen = BUFLEN; 1967 rec->env.data = emalloc(rec->env.buflen); 1968 rec->env.offset = 0; 1969 1970 rec->files.buflen = BUFLEN; 1971 rec->files.data = emalloc(rec->files.buflen); 1972 rec->files.offset = 0; 1973 1974 rec->diagnostics.buflen = BUFLEN; 1975 rec->diagnostics.data = emalloc(rec->diagnostics.buflen); 1976 rec->diagnostics.offset = 0; 1977 1978 rec->errors.buflen = BUFLEN; 1979 rec->errors.data = emalloc(rec->errors.buflen); 1980 rec->errors.offset = 0; 1981} 1982 1983/* 1984 * free_secbuffs-- 1985 * This function should be called at the end, when all the pages have been 1986 * parsed. 1987 * It frees the memory allocated to sec_buffs by init_secbuffs in the starting. 1988 */ 1989static void 1990free_secbuffs(mandb_rec *rec) 1991{ 1992 free(rec->desc.data); 1993 free(rec->lib.data); 1994 free(rec->return_vals.data); 1995 free(rec->exit_status.data); 1996 free(rec->env.data); 1997 free(rec->files.data); 1998 free(rec->diagnostics.data); 1999 free(rec->errors.data); 2000} 2001 2002static void 2003replace_hyph(char *str) 2004{ 2005 char *iter = str; 2006 while ((iter = strchr(iter, ASCII_HYPH)) != NULL) 2007 *iter = '-'; 2008 2009 iter = str; 2010 while ((iter = strchr(iter, ASCII_NBRSP)) != NULL) 2011 *iter = '-'; 2012} 2013 2014static char * 2015parse_escape(const char *str) 2016{ 2017 const char *backslash, *last_backslash; 2018 char *result, *iter; 2019 size_t len; 2020 2021 assert(str); 2022 2023 last_backslash = str; 2024 backslash = strchr(str, '\\'); 2025 if (backslash == NULL) { 2026 result = estrdup(str); 2027 replace_hyph(result); 2028 return result; 2029 } 2030 2031 result = emalloc(strlen(str) + 1); 2032 iter = result; 2033 2034 do { 2035 len = backslash - last_backslash; 2036 memcpy(iter, last_backslash, len); 2037 iter += len; 2038 if (backslash[1] == '-' || backslash[1] == ' ') { 2039 *iter++ = backslash[1]; 2040 last_backslash = backslash + 2; 2041 backslash = strchr(backslash + 2, '\\'); 2042 } else { 2043 ++backslash; 2044 mandoc_escape(&backslash, NULL, NULL); 2045 last_backslash = backslash; 2046 if (backslash == NULL) 2047 break; 2048 backslash = strchr(last_backslash, '\\'); 2049 } 2050 } while (backslash != NULL); 2051 if (last_backslash != NULL) 2052 strcpy(iter, last_backslash); 2053 2054 replace_hyph(result); 2055 return result; 2056} 2057 2058/* 2059 * append-- 2060 * Concatenates a space and src at the end of sbuff->data (much like concat in 2061 * apropos-utils.c). 2062 * Rather than reallocating space for writing data, it uses the value of the 2063 * offset field of sec_buff to write new data at the free space left in the 2064 * buffer. 2065 * In case the size of the data to be appended exceeds the number of bytes left 2066 * in the buffer, it reallocates buflen number of bytes and then continues. 2067 * Value of offset field should be adjusted as new data is written. 2068 * 2069 * NOTE: This function does not write the null byte at the end of the buffers, 2070 * write a null byte at the position pointed to by offset before inserting data 2071 * in the db. 2072 */ 2073static void 2074append(secbuff *sbuff, const char *src) 2075{ 2076 short flag = 0; 2077 size_t srclen, newlen; 2078 char *temp; 2079 2080 assert(src != NULL); 2081 temp = parse_escape(src); 2082 srclen = strlen(temp); 2083 2084 if (sbuff->data == NULL) { 2085 sbuff->data = emalloc(sbuff->buflen); 2086 sbuff->offset = 0; 2087 } 2088 2089 newlen = sbuff->offset + srclen + 2; 2090 if (newlen >= sbuff->buflen) { 2091 while (sbuff->buflen < newlen) 2092 sbuff->buflen += sbuff->buflen; 2093 sbuff->data = erealloc(sbuff->data, sbuff->buflen); 2094 flag = 1; 2095 } 2096 2097 /* Append a space at the end of the buffer. */ 2098 if (sbuff->offset || flag) 2099 sbuff->data[sbuff->offset++] = ' '; 2100 /* Now, copy src at the end of the buffer. */ 2101 memcpy(sbuff->data + sbuff->offset, temp, srclen); 2102 sbuff->offset += srclen; 2103 free(temp); 2104} 2105 2106static void 2107usage(void) 2108{ 2109 fprintf(stderr, "Usage: %s [-floQqv] [-C path]\n", getprogname()); 2110 exit(1); 2111} 2112