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_birthtime) 194 printtime(sp->st_birthtime); 195 else if (f_statustime) 196 printtime(sp->st_ctime); 197 else 198 printtime(sp->st_mtime); 199 #ifdef COLORLS 200 if (f_color) 201 color_printed = colortype(sp->st_mode); 202 #endif 203 (void)printname(p->fts_name); 204 #ifdef COLORLS 205 if (f_color && color_printed) 206 endcolor(0); 207 #endif 208 if (f_type) 209 (void)printtype(sp->st_mode); 210 if (S_ISLNK(sp->st_mode)) 211 printlink(p); 212 (void)putchar('\n'); 213 } 214 } 215 216 void 217 printstream(const DISPLAY *dp) 218 { 219 FTSENT *p; 220 int chcnt; 221 222 for (p = dp->list, chcnt = 0; p; p = p->fts_link) { 223 if (p->fts_number == NO_PRINT) 224 continue; 225 /* XXX strlen does not take octal escapes into account. */ 226 if (strlen(p->fts_name) + chcnt + 227 (p->fts_link ? 2 : 0) >= (unsigned)termwidth) { 228 putchar('\n'); 229 chcnt = 0; 230 } 231 chcnt += printaname(p, dp->s_inode, dp->s_block); 232 if (p->fts_link) { 233 printf(", "); 234 chcnt += 2; 235 } 236 } 237 if (chcnt) 238 putchar('\n'); 239 } 240 241 void 242 printcol(const DISPLAY *dp) 243 { 244 static FTSENT **array; 245 static int lastentries = -1; 246 FTSENT *p; 247 FTSENT **narray; 248 int base; 249 int chcnt; 250 int cnt; 251 int col; 252 int colwidth; 253 int endcol; 254 int num; 255 int numcols; 256 int numrows; 257 int row; 258 int tabwidth; 259 260 if (f_notabs) 261 tabwidth = 1; 262 else 263 tabwidth = 8; 264 265 /* 266 * Have to do random access in the linked list -- build a table 267 * of pointers. 268 */ 269 if (dp->entries > lastentries) { 270 if ((narray = 271 realloc(array, dp->entries * sizeof(FTSENT *))) == NULL) { 272 warn(NULL); 273 printscol(dp); 274 return; 275 } 276 lastentries = dp->entries; 277 array = narray; 278 } 279 for (p = dp->list, num = 0; p; p = p->fts_link) 280 if (p->fts_number != NO_PRINT) 281 array[num++] = p; 282 283 colwidth = dp->maxlen; 284 if (f_inode) 285 colwidth += dp->s_inode + 1; 286 if (f_size) 287 colwidth += dp->s_block + 1; 288 if (f_type) 289 colwidth += 1; 290 291 colwidth = (colwidth + tabwidth) & ~(tabwidth - 1); 292 if (termwidth < 2 * colwidth) { 293 printscol(dp); 294 return; 295 } 296 numcols = termwidth / colwidth; 297 numrows = num / numcols; 298 if (num % numcols) 299 ++numrows; 300 301 if ((dp->list == NULL || dp->list->fts_level != FTS_ROOTLEVEL) && 302 (f_longform || f_size)) { 303 (void)printf("total %lu\n", howmany(dp->btotal, blocksize)); 304 } 305 306 base = 0; 307 for (row = 0; row < numrows; ++row) { 308 endcol = colwidth; 309 if (!f_sortacross) 310 base = row; 311 for (col = 0, chcnt = 0; col < numcols; ++col) { 312 chcnt += printaname(array[base], dp->s_inode, 313 dp->s_block); 314 if (f_sortacross) 315 base++; 316 else 317 base += numrows; 318 if (base >= num) 319 break; 320 while ((cnt = ((chcnt + tabwidth) & ~(tabwidth - 1))) 321 <= endcol) { 322 if (f_sortacross && col + 1 >= numcols) 323 break; 324 (void)putchar(f_notabs ? ' ' : '\t'); 325 chcnt = cnt; 326 } 327 endcol += colwidth; 328 } 329 (void)putchar('\n'); 330 } 331 } 332 333 /* 334 * print [inode] [size] name 335 * return # of characters printed, no trailing characters. 336 */ 337 static int 338 printaname(const FTSENT *p, u_long inodefield, u_long sizefield) 339 { 340 struct stat *sp; 341 int chcnt; 342 #ifdef COLORLS 343 int color_printed = 0; 344 #endif 345 346 sp = p->fts_statp; 347 chcnt = 0; 348 if (f_inode) 349 chcnt += printf("%*lu ", (int)inodefield, (u_long)sp->st_ino); 350 if (f_size) 351 chcnt += printf("%*jd ", 352 (int)sizefield, howmany(sp->st_blocks, blocksize)); 353 #ifdef COLORLS 354 if (f_color) 355 color_printed = colortype(sp->st_mode); 356 #endif 357 chcnt += printname(p->fts_name); 358 #ifdef COLORLS 359 if (f_color && color_printed) 360 endcolor(0); 361 #endif 362 if (f_type) 363 chcnt += printtype(sp->st_mode); 364 return (chcnt); 365 } 366 367 static void 368 printtime(time_t ftime) 369 { 370 char longstring[80]; 371 static time_t now = 0; 372 const char *format; 373 static int d_first = -1; 374 375 if (d_first < 0) 376 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 377 if (now == 0) 378 now = time(NULL); 379 380 #define SIXMONTHS ((365 / 2) * 86400) 381 if (f_timeformat) /* user specified format */ 382 format = f_timeformat; 383 else if (f_sectime) 384 /* mmm dd hh:mm:ss yyyy || dd mmm hh:mm:ss yyyy */ 385 format = d_first ? "%e %b %T %Y" : "%b %e %T %Y"; 386 else if (ftime + SIXMONTHS > now && ftime < now + SIXMONTHS) 387 /* mmm dd hh:mm || dd mmm hh:mm */ 388 format = d_first ? "%e %b %R" : "%b %e %R"; 389 else 390 /* mmm dd yyyy || dd mmm yyyy */ 391 format = d_first ? "%e %b %Y" : "%b %e %Y"; 392 strftime(longstring, sizeof(longstring), format, localtime(&ftime)); 393 fputs(longstring, stdout); 394 fputc(' ', stdout); 395 } 396 397 static int 398 printtype(u_int mode) 399 { 400 401 if (f_slash) { 402 if ((mode & S_IFMT) == S_IFDIR) { 403 (void)putchar('/'); 404 return (1); 405 } 406 return (0); 407 } 408 409 switch (mode & S_IFMT) { 410 case S_IFDIR: 411 (void)putchar('/'); 412 return (1); 413 case S_IFIFO: 414 (void)putchar('|'); 415 return (1); 416 case S_IFLNK: 417 (void)putchar('@'); 418 return (1); 419 case S_IFSOCK: 420 (void)putchar('='); 421 return (1); 422 case S_IFWHT: 423 (void)putchar('%'); 424 return (1); 425 default: 426 break; 427 } 428 if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) { 429 (void)putchar('*'); 430 return (1); 431 } 432 return (0); 433 } 434 435 #ifdef COLORLS 436 static int 437 putch(int c) 438 { 439 (void)putchar(c); 440 return 0; 441 } 442 443 static int 444 writech(int c) 445 { 446 char tmp = (char)c; 447 448 (void)write(STDOUT_FILENO, &tmp, 1); 449 return 0; 450 } 451 452 static void 453 printcolor(Colors c) 454 { 455 char *ansiseq; 456 457 if (colors[c].bold) 458 tputs(enter_bold, 1, putch); 459 460 if (colors[c].num[0] != -1) { 461 ansiseq = tgoto(ansi_fgcol, 0, colors[c].num[0]); 462 if (ansiseq) 463 tputs(ansiseq, 1, putch); 464 } 465 if (colors[c].num[1] != -1) { 466 ansiseq = tgoto(ansi_bgcol, 0, colors[c].num[1]); 467 if (ansiseq) 468 tputs(ansiseq, 1, putch); 469 } 470 } 471 472 static void 473 endcolor(int sig) 474 { 475 tputs(ansi_coloff, 1, sig ? writech : putch); 476 tputs(attrs_off, 1, sig ? writech : putch); 477 } 478 479 static int 480 colortype(mode_t mode) 481 { 482 switch (mode & S_IFMT) { 483 case S_IFDIR: 484 if (mode & S_IWOTH) 485 if (mode & S_ISTXT) 486 printcolor(C_WSDIR); 487 else 488 printcolor(C_WDIR); 489 else 490 printcolor(C_DIR); 491 return (1); 492 case S_IFLNK: 493 printcolor(C_LNK); 494 return (1); 495 case S_IFSOCK: 496 printcolor(C_SOCK); 497 return (1); 498 case S_IFIFO: 499 printcolor(C_FIFO); 500 return (1); 501 case S_IFBLK: 502 printcolor(C_BLK); 503 return (1); 504 case S_IFCHR: 505 printcolor(C_CHR); 506 return (1); 507 default:; 508 } 509 if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) { 510 if (mode & S_ISUID) 511 printcolor(C_SUID); 512 else if (mode & S_ISGID) 513 printcolor(C_SGID); 514 else 515 printcolor(C_EXEC); 516 return (1); 517 } 518 return (0); 519 } 520 521 void 522 parsecolors(const char *cs) 523 { 524 int i; 525 int j; 526 size_t len; 527 char c[2]; 528 short legacy_warn = 0; 529 530 if (cs == NULL) 531 cs = ""; /* LSCOLORS not set */ 532 len = strlen(cs); 533 for (i = 0; i < (int)C_NUMCOLORS; i++) { 534 colors[i].bold = 0; 535 536 if (len <= 2 * (size_t)i) { 537 c[0] = defcolors[2 * i]; 538 c[1] = defcolors[2 * i + 1]; 539 } else { 540 c[0] = cs[2 * i]; 541 c[1] = cs[2 * i + 1]; 542 } 543 for (j = 0; j < 2; j++) { 544 /* Legacy colours used 0-7 */ 545 if (c[j] >= '0' && c[j] <= '7') { 546 colors[i].num[j] = c[j] - '0'; 547 if (!legacy_warn) { 548 warnx("LSCOLORS should use " 549 "characters a-h instead of 0-9 (" 550 "see the manual page)"); 551 } 552 legacy_warn = 1; 553 } else if (c[j] >= 'a' && c[j] <= 'h') 554 colors[i].num[j] = c[j] - 'a'; 555 else if (c[j] >= 'A' && c[j] <= 'H') { 556 colors[i].num[j] = c[j] - 'A'; 557 colors[i].bold = 1; 558 } else if (tolower((unsigned char)c[j]) == 'x') 559 colors[i].num[j] = -1; 560 else { 561 warnx("invalid character '%c' in LSCOLORS" 562 " env var", c[j]); 563 colors[i].num[j] = -1; 564 } 565 } 566 } 567 } 568 569 void 570 colorquit(int sig) 571 { 572 endcolor(sig); 573 574 (void)signal(sig, SIG_DFL); 575 (void)kill(getpid(), sig); 576 } 577 578 #endif /* COLORLS */ 579 580 static void 581 printlink(const FTSENT *p) 582 { 583 int lnklen; 584 char name[MAXPATHLEN + 1]; 585 char path[MAXPATHLEN + 1]; 586 587 if (p->fts_level == FTS_ROOTLEVEL) 588 (void)snprintf(name, sizeof(name), "%s", p->fts_name); 589 else 590 (void)snprintf(name, sizeof(name), 591 "%s/%s", p->fts_parent->fts_accpath, p->fts_name); 592 if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) { 593 (void)fprintf(stderr, "\nls: %s: %s\n", name, strerror(errno)); 594 return; 595 } 596 path[lnklen] = '\0'; 597 (void)printf(" -> "); 598 (void)printname(path); 599 } 600 601 static void 602 printsize(size_t width, off_t bytes) 603 { 604 605 if (f_humanval) { 606 char buf[5]; 607 608 humanize_number(buf, sizeof(buf), (int64_t)bytes, "", 609 HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL); 610 (void)printf("%5s ", buf); 611 } else 612 (void)printf("%*jd ", (u_int)width, bytes); 613 } 614 615 static void 616 aclmode(char *buf, const FTSENT *p, int *haveacls) 617 { 618 char name[MAXPATHLEN + 1]; 619 int entries, ret; 620 acl_t facl; 621 acl_entry_t ae; 622 623 /* 624 * Add a + after the standard rwxrwxrwx mode if the file has an 625 * extended ACL. strmode() reserves space at the end of the string. 626 */ 627 if (p->fts_level == FTS_ROOTLEVEL) 628 snprintf(name, sizeof(name), "%s", p->fts_name); 629 else 630 snprintf(name, sizeof(name), "%s/%s", 631 p->fts_parent->fts_accpath, p->fts_name); 632 /* 633 * We have no way to tell whether a symbolic link has an ACL since 634 * pathconf() and acl_get_file() both follow them. They also don't 635 * support whiteouts. 636 */ 637 if (S_ISLNK(p->fts_statp->st_mode) || S_ISWHT(p->fts_statp->st_mode)) { 638 *haveacls = 1; 639 return; 640 } 641 if ((ret = pathconf(name, _PC_ACL_EXTENDED)) <= 0) { 642 if (ret < 0 && errno != EINVAL) 643 warn("%s", name); 644 else 645 *haveacls = 0; 646 return; 647 } 648 *haveacls = 1; 649 if ((facl = acl_get_file(name, ACL_TYPE_ACCESS)) != NULL) { 650 if (acl_get_entry(facl, ACL_FIRST_ENTRY, &ae) == 1) { 651 entries = 1; 652 while (acl_get_entry(facl, ACL_NEXT_ENTRY, &ae) == 1) 653 if (++entries > 3) 654 break; 655 /* 656 * POSIX.1e requires that ACLs of type ACL_TYPE_ACCESS 657 * must have at least three entries (owner, group, 658 * and other). So anything with more than 3 ACLs looks 659 * interesting to us. 660 */ 661 if (entries > 3) 662 buf[10] = '+'; 663 } 664 acl_free(facl); 665 } else 666 warn("%s", name); 667 } 668