1 /* 2 * Copyright (c) 1989, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Michael Fischbein. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #if 0 34 #ifndef lint 35 static char sccsid[] = "@(#)print.c 8.4 (Berkeley) 4/17/94"; 36 #endif /* not lint */ 37 #endif 38 #include <sys/cdefs.h> 39 __FBSDID("$FreeBSD$"); 40 41 #include <sys/param.h> 42 #include <sys/stat.h> 43 #include <sys/acl.h> 44 45 #include <err.h> 46 #include <errno.h> 47 #include <fts.h> 48 #include <langinfo.h> 49 #include <libutil.h> 50 #include <stdio.h> 51 #include <stdlib.h> 52 #include <string.h> 53 #include <time.h> 54 #include <unistd.h> 55 #ifdef COLORLS 56 #include <ctype.h> 57 #include <termcap.h> 58 #include <signal.h> 59 #endif 60 61 #include "ls.h" 62 #include "extern.h" 63 64 static int printaname(const FTSENT *, u_long, u_long); 65 static void printlink(const FTSENT *); 66 static void printtime(time_t); 67 static int printtype(u_int); 68 static void printsize(size_t, off_t); 69 #ifdef COLORLS 70 static void endcolor(int); 71 static int colortype(mode_t); 72 #endif 73 static void aclmode(char *, const FTSENT *, int *); 74 75 #define IS_NOPRINT(p) ((p)->fts_number == NO_PRINT) 76 77 #ifdef COLORLS 78 /* Most of these are taken from <sys/stat.h> */ 79 typedef enum Colors { 80 C_DIR, /* directory */ 81 C_LNK, /* symbolic link */ 82 C_SOCK, /* socket */ 83 C_FIFO, /* pipe */ 84 C_EXEC, /* executable */ 85 C_BLK, /* block special */ 86 C_CHR, /* character special */ 87 C_SUID, /* setuid executable */ 88 C_SGID, /* setgid executable */ 89 C_WSDIR, /* directory writeble to others, with sticky 90 * bit */ 91 C_WDIR, /* directory writeble to others, without 92 * sticky bit */ 93 C_NUMCOLORS /* just a place-holder */ 94 } Colors; 95 96 static const char *defcolors = "exfxcxdxbxegedabagacad"; 97 98 /* colors for file types */ 99 static struct { 100 int num[2]; 101 int bold; 102 } colors[C_NUMCOLORS]; 103 #endif 104 105 void 106 printscol(const DISPLAY *dp) 107 { 108 FTSENT *p; 109 110 for (p = dp->list; p; p = p->fts_link) { 111 if (IS_NOPRINT(p)) 112 continue; 113 (void)printaname(p, dp->s_inode, dp->s_block); 114 (void)putchar('\n'); 115 } 116 } 117 118 /* 119 * print name in current style 120 */ 121 int 122 printname(const char *name) 123 { 124 if (f_octal || f_octal_escape) 125 return prn_octal(name); 126 else if (f_nonprint) 127 return prn_printable(name); 128 else 129 return prn_normal(name); 130 } 131 132 void 133 printlong(const DISPLAY *dp) 134 { 135 struct stat *sp; 136 FTSENT *p; 137 NAMES *np; 138 char buf[20]; 139 #ifdef COLORLS 140 int color_printed = 0; 141 #endif 142 int haveacls; 143 dev_t prevdev; 144 145 if ((dp->list == NULL || dp->list->fts_level != FTS_ROOTLEVEL) && 146 (f_longform || f_size)) { 147 (void)printf("total %lu\n", howmany(dp->btotal, blocksize)); 148 } 149 150 haveacls = 1; 151 prevdev = (dev_t)-1; 152 for (p = dp->list; p; p = p->fts_link) { 153 if (IS_NOPRINT(p)) 154 continue; 155 sp = p->fts_statp; 156 if (f_inode) 157 (void)printf("%*lu ", dp->s_inode, (u_long)sp->st_ino); 158 if (f_size) 159 (void)printf("%*jd ", 160 dp->s_block, howmany(sp->st_blocks, blocksize)); 161 strmode(sp->st_mode, buf); 162 /* 163 * Cache whether or not the filesystem supports ACL's to 164 * avoid expensive syscalls. Try again when we change devices. 165 */ 166 if (haveacls || sp->st_dev != prevdev) { 167 aclmode(buf, p, &haveacls); 168 prevdev = sp->st_dev; 169 } 170 np = p->fts_pointer; 171 (void)printf("%s %*u %-*s %-*s ", buf, dp->s_nlink, 172 sp->st_nlink, dp->s_user, np->user, dp->s_group, 173 np->group); 174 if (f_flags) 175 (void)printf("%-*s ", dp->s_flags, np->flags); 176 if (f_label) 177 (void)printf("%-*s ", dp->s_label, np->label); 178 if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode)) 179 if (minor(sp->st_rdev) > 255 || minor(sp->st_rdev) < 0) 180 (void)printf("%3d, 0x%08x ", 181 major(sp->st_rdev), 182 (u_int)minor(sp->st_rdev)); 183 else 184 (void)printf("%3d, %3d ", 185 major(sp->st_rdev), minor(sp->st_rdev)); 186 else if (dp->bcfile) 187 (void)printf("%*s%*jd ", 188 8 - dp->s_size, "", dp->s_size, sp->st_size); 189 else 190 printsize(dp->s_size, sp->st_size); 191 if (f_accesstime) 192 printtime(sp->st_atime); 193 else if (f_statustime) 194 printtime(sp->st_ctime); 195 else 196 printtime(sp->st_mtime); 197 #ifdef COLORLS 198 if (f_color) 199 color_printed = colortype(sp->st_mode); 200 #endif 201 (void)printname(p->fts_name); 202 #ifdef COLORLS 203 if (f_color && color_printed) 204 endcolor(0); 205 #endif 206 if (f_type) 207 (void)printtype(sp->st_mode); 208 if (S_ISLNK(sp->st_mode)) 209 printlink(p); 210 (void)putchar('\n'); 211 } 212 } 213 214 void 215 printstream(const DISPLAY *dp) 216 { 217 FTSENT *p; 218 int chcnt; 219 220 for (p = dp->list, chcnt = 0; p; p = p->fts_link) { 221 if (p->fts_number == NO_PRINT) 222 continue; 223 /* XXX strlen does not take octal escapes into account. */ 224 if (strlen(p->fts_name) + chcnt + 225 (p->fts_link ? 2 : 0) >= (unsigned)termwidth) { 226 putchar('\n'); 227 chcnt = 0; 228 } 229 chcnt += printaname(p, dp->s_inode, dp->s_block); 230 if (p->fts_link) { 231 printf(", "); 232 chcnt += 2; 233 } 234 } 235 if (chcnt) 236 putchar('\n'); 237 } 238 239 void 240 printcol(const DISPLAY *dp) 241 { 242 static FTSENT **array; 243 static int lastentries = -1; 244 FTSENT *p; 245 FTSENT **narray; 246 int base; 247 int chcnt; 248 int cnt; 249 int col; 250 int colwidth; 251 int endcol; 252 int num; 253 int numcols; 254 int numrows; 255 int row; 256 int tabwidth; 257 258 if (f_notabs) 259 tabwidth = 1; 260 else 261 tabwidth = 8; 262 263 /* 264 * Have to do random access in the linked list -- build a table 265 * of pointers. 266 */ 267 if (dp->entries > lastentries) { 268 if ((narray = 269 realloc(array, dp->entries * sizeof(FTSENT *))) == NULL) { 270 warn(NULL); 271 printscol(dp); 272 return; 273 } 274 lastentries = dp->entries; 275 array = narray; 276 } 277 for (p = dp->list, num = 0; p; p = p->fts_link) 278 if (p->fts_number != NO_PRINT) 279 array[num++] = p; 280 281 colwidth = dp->maxlen; 282 if (f_inode) 283 colwidth += dp->s_inode + 1; 284 if (f_size) 285 colwidth += dp->s_block + 1; 286 if (f_type) 287 colwidth += 1; 288 289 colwidth = (colwidth + tabwidth) & ~(tabwidth - 1); 290 if (termwidth < 2 * colwidth) { 291 printscol(dp); 292 return; 293 } 294 numcols = termwidth / colwidth; 295 numrows = num / numcols; 296 if (num % numcols) 297 ++numrows; 298 299 if ((dp->list == NULL || dp->list->fts_level != FTS_ROOTLEVEL) && 300 (f_longform || f_size)) { 301 (void)printf("total %lu\n", howmany(dp->btotal, blocksize)); 302 } 303 304 base = 0; 305 for (row = 0; row < numrows; ++row) { 306 endcol = colwidth; 307 if (!f_sortacross) 308 base = row; 309 for (col = 0, chcnt = 0; col < numcols; ++col) { 310 chcnt += printaname(array[base], dp->s_inode, 311 dp->s_block); 312 if (f_sortacross) 313 base++; 314 else 315 base += numrows; 316 if (base >= num) 317 break; 318 while ((cnt = ((chcnt + tabwidth) & ~(tabwidth - 1))) 319 <= endcol) { 320 if (f_sortacross && col + 1 >= numcols) 321 break; 322 (void)putchar(f_notabs ? ' ' : '\t'); 323 chcnt = cnt; 324 } 325 endcol += colwidth; 326 } 327 (void)putchar('\n'); 328 } 329 } 330 331 /* 332 * print [inode] [size] name 333 * return # of characters printed, no trailing characters. 334 */ 335 static int 336 printaname(const FTSENT *p, u_long inodefield, u_long sizefield) 337 { 338 struct stat *sp; 339 int chcnt; 340 #ifdef COLORLS 341 int color_printed = 0; 342 #endif 343 344 sp = p->fts_statp; 345 chcnt = 0; 346 if (f_inode) 347 chcnt += printf("%*lu ", (int)inodefield, (u_long)sp->st_ino); 348 if (f_size) 349 chcnt += printf("%*jd ", 350 (int)sizefield, howmany(sp->st_blocks, blocksize)); 351 #ifdef COLORLS 352 if (f_color) 353 color_printed = colortype(sp->st_mode); 354 #endif 355 chcnt += printname(p->fts_name); 356 #ifdef COLORLS 357 if (f_color && color_printed) 358 endcolor(0); 359 #endif 360 if (f_type) 361 chcnt += printtype(sp->st_mode); 362 return (chcnt); 363 } 364 365 static void 366 printtime(time_t ftime) 367 { 368 char longstring[80]; 369 static time_t now = 0; 370 const char *format; 371 static int d_first = -1; 372 373 if (d_first < 0) 374 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 375 if (now == 0) 376 now = time(NULL); 377 378 #define SIXMONTHS ((365 / 2) * 86400) 379 if (f_sectime) 380 /* mmm dd hh:mm:ss yyyy || dd mmm hh:mm:ss yyyy */ 381 format = d_first ? "%e %b %T %Y " : "%b %e %T %Y "; 382 else if (ftime + SIXMONTHS > now && ftime < now + SIXMONTHS) 383 /* mmm dd hh:mm || dd mmm hh:mm */ 384 format = d_first ? "%e %b %R " : "%b %e %R "; 385 else 386 /* mmm dd yyyy || dd mmm yyyy */ 387 format = d_first ? "%e %b %Y " : "%b %e %Y "; 388 strftime(longstring, sizeof(longstring), format, localtime(&ftime)); 389 fputs(longstring, stdout); 390 } 391 392 static int 393 printtype(u_int mode) 394 { 395 396 if (f_slash) { 397 if ((mode & S_IFMT) == S_IFDIR) { 398 (void)putchar('/'); 399 return (1); 400 } 401 return (0); 402 } 403 404 switch (mode & S_IFMT) { 405 case S_IFDIR: 406 (void)putchar('/'); 407 return (1); 408 case S_IFIFO: 409 (void)putchar('|'); 410 return (1); 411 case S_IFLNK: 412 (void)putchar('@'); 413 return (1); 414 case S_IFSOCK: 415 (void)putchar('='); 416 return (1); 417 case S_IFWHT: 418 (void)putchar('%'); 419 return (1); 420 default: 421 break; 422 } 423 if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) { 424 (void)putchar('*'); 425 return (1); 426 } 427 return (0); 428 } 429 430 #ifdef COLORLS 431 static int 432 putch(int c) 433 { 434 (void)putchar(c); 435 return 0; 436 } 437 438 static int 439 writech(int c) 440 { 441 char tmp = (char)c; 442 443 (void)write(STDOUT_FILENO, &tmp, 1); 444 return 0; 445 } 446 447 static void 448 printcolor(Colors c) 449 { 450 char *ansiseq; 451 452 if (colors[c].bold) 453 tputs(enter_bold, 1, putch); 454 455 if (colors[c].num[0] != -1) { 456 ansiseq = tgoto(ansi_fgcol, 0, colors[c].num[0]); 457 if (ansiseq) 458 tputs(ansiseq, 1, putch); 459 } 460 if (colors[c].num[1] != -1) { 461 ansiseq = tgoto(ansi_bgcol, 0, colors[c].num[1]); 462 if (ansiseq) 463 tputs(ansiseq, 1, putch); 464 } 465 } 466 467 static void 468 endcolor(int sig) 469 { 470 tputs(ansi_coloff, 1, sig ? writech : putch); 471 tputs(attrs_off, 1, sig ? writech : putch); 472 } 473 474 static int 475 colortype(mode_t mode) 476 { 477 switch (mode & S_IFMT) { 478 case S_IFDIR: 479 if (mode & S_IWOTH) 480 if (mode & S_ISTXT) 481 printcolor(C_WSDIR); 482 else 483 printcolor(C_WDIR); 484 else 485 printcolor(C_DIR); 486 return (1); 487 case S_IFLNK: 488 printcolor(C_LNK); 489 return (1); 490 case S_IFSOCK: 491 printcolor(C_SOCK); 492 return (1); 493 case S_IFIFO: 494 printcolor(C_FIFO); 495 return (1); 496 case S_IFBLK: 497 printcolor(C_BLK); 498 return (1); 499 case S_IFCHR: 500 printcolor(C_CHR); 501 return (1); 502 default:; 503 } 504 if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) { 505 if (mode & S_ISUID) 506 printcolor(C_SUID); 507 else if (mode & S_ISGID) 508 printcolor(C_SGID); 509 else 510 printcolor(C_EXEC); 511 return (1); 512 } 513 return (0); 514 } 515 516 void 517 parsecolors(const char *cs) 518 { 519 int i; 520 int j; 521 size_t len; 522 char c[2]; 523 short legacy_warn = 0; 524 525 if (cs == NULL) 526 cs = ""; /* LSCOLORS not set */ 527 len = strlen(cs); 528 for (i = 0; i < (int)C_NUMCOLORS; i++) { 529 colors[i].bold = 0; 530 531 if (len <= 2 * (size_t)i) { 532 c[0] = defcolors[2 * i]; 533 c[1] = defcolors[2 * i + 1]; 534 } else { 535 c[0] = cs[2 * i]; 536 c[1] = cs[2 * i + 1]; 537 } 538 for (j = 0; j < 2; j++) { 539 /* Legacy colours used 0-7 */ 540 if (c[j] >= '0' && c[j] <= '7') { 541 colors[i].num[j] = c[j] - '0'; 542 if (!legacy_warn) { 543 warnx("LSCOLORS should use " 544 "characters a-h instead of 0-9 (" 545 "see the manual page)"); 546 } 547 legacy_warn = 1; 548 } else if (c[j] >= 'a' && c[j] <= 'h') 549 colors[i].num[j] = c[j] - 'a'; 550 else if (c[j] >= 'A' && c[j] <= 'H') { 551 colors[i].num[j] = c[j] - 'A'; 552 colors[i].bold = 1; 553 } else if (tolower((unsigned char)c[j]) == 'x') 554 colors[i].num[j] = -1; 555 else { 556 warnx("invalid character '%c' in LSCOLORS" 557 " env var", c[j]); 558 colors[i].num[j] = -1; 559 } 560 } 561 } 562 } 563 564 void 565 colorquit(int sig) 566 { 567 endcolor(sig); 568 569 (void)signal(sig, SIG_DFL); 570 (void)kill(getpid(), sig); 571 } 572 573 #endif /* COLORLS */ 574 575 static void 576 printlink(const FTSENT *p) 577 { 578 int lnklen; 579 char name[MAXPATHLEN + 1]; 580 char path[MAXPATHLEN + 1]; 581 582 if (p->fts_level == FTS_ROOTLEVEL) 583 (void)snprintf(name, sizeof(name), "%s", p->fts_name); 584 else 585 (void)snprintf(name, sizeof(name), 586 "%s/%s", p->fts_parent->fts_accpath, p->fts_name); 587 if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) { 588 (void)fprintf(stderr, "\nls: %s: %s\n", name, strerror(errno)); 589 return; 590 } 591 path[lnklen] = '\0'; 592 (void)printf(" -> "); 593 (void)printname(path); 594 } 595 596 static void 597 printsize(size_t width, off_t bytes) 598 { 599 600 if (f_humanval) { 601 char buf[5]; 602 603 humanize_number(buf, sizeof(buf), (int64_t)bytes, "", 604 HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL); 605 (void)printf("%5s ", buf); 606 } else 607 (void)printf("%*jd ", (u_int)width, bytes); 608 } 609 610 static void 611 aclmode(char *buf, const FTSENT *p, int *haveacls) 612 { 613 char name[MAXPATHLEN + 1]; 614 int entries, ret; 615 acl_t facl; 616 acl_entry_t ae; 617 618 /* 619 * Add a + after the standard rwxrwxrwx mode if the file has an 620 * extended ACL. strmode() reserves space at the end of the string. 621 */ 622 if (p->fts_level == FTS_ROOTLEVEL) 623 snprintf(name, sizeof(name), "%s", p->fts_name); 624 else 625 snprintf(name, sizeof(name), "%s/%s", 626 p->fts_parent->fts_accpath, p->fts_name); 627 /* 628 * We have no way to tell whether a symbolic link has an ACL since 629 * pathconf() and acl_get_file() both follow them. 630 */ 631 if (S_ISLNK(p->fts_statp->st_mode)) { 632 *haveacls = 1; 633 return; 634 } 635 if ((ret = pathconf(name, _PC_ACL_EXTENDED)) <= 0) { 636 if (ret < 0 && errno != EINVAL) 637 warn("%s", name); 638 else 639 *haveacls = 0; 640 return; 641 } 642 *haveacls = 1; 643 if ((facl = acl_get_file(name, ACL_TYPE_ACCESS)) != NULL) { 644 if (acl_get_entry(facl, ACL_FIRST_ENTRY, &ae) == 1) { 645 entries = 1; 646 while (acl_get_entry(facl, ACL_NEXT_ENTRY, &ae) == 1) 647 if (++entries > 3) 648 break; 649 /* 650 * POSIX.1e requires that ACLs of type ACL_TYPE_ACCESS 651 * must have at least three entries (owner, group, 652 * and other). So anything with more than 3 ACLs looks 653 * interesting to us. 654 */ 655 if (entries > 3) 656 buf[10] = '+'; 657 } 658 acl_free(facl); 659 } else 660 warn("%s", name); 661 } 662