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 * 3. 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 * @(#)print.c 8.4 (Berkeley) 4/17/94 33 * $FreeBSD: src/bin/ls/print.c,v 1.73 2004/06/08 09:27:42 das Exp $ 34 */ 35 36 #include <sys/param.h> 37 #include <sys/stat.h> 38 39 #include <err.h> 40 #include <errno.h> 41 #include <fts.h> 42 #include <langinfo.h> 43 #include <libutil.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <string.h> 47 #include <time.h> 48 #include <unistd.h> 49 #include <locale.h> 50 #ifdef COLORLS 51 #include <ctype.h> 52 #include <termcap.h> 53 #include <signal.h> 54 #endif 55 56 #include "ls.h" 57 #include "extern.h" 58 59 static int printaname(const FTSENT *, u_long, u_long); 60 static void printlink(const FTSENT *); 61 static void printtime(const struct timespec); 62 static int printtype(u_int); 63 static void printsize(size_t, off_t); 64 #ifdef COLORLS 65 static void endcolor(int); 66 static int colortype(mode_t); 67 #endif 68 69 #define IS_NOPRINT(p) ((p)->fts_number == NO_PRINT) 70 71 #ifdef COLORLS 72 /* Most of these are taken from <sys/stat.h> */ 73 typedef enum Colors { 74 C_DIR, /* directory */ 75 C_LNK, /* symbolic link */ 76 C_SOCK, /* socket */ 77 C_FIFO, /* pipe */ 78 C_EXEC, /* executable */ 79 C_BLK, /* block special */ 80 C_CHR, /* character special */ 81 C_SUID, /* setuid executable */ 82 C_SGID, /* setgid executable */ 83 C_WSDIR, /* directory writeble to others, with sticky 84 * bit */ 85 C_WDIR, /* directory writeble to others, without 86 * sticky bit */ 87 C_NUMCOLORS /* just a place-holder */ 88 } Colors; 89 90 static const char *defcolors = "exfxcxdxbxegedabagacad"; 91 92 /* colors for file types */ 93 static struct { 94 int num[2]; 95 int bold; 96 } colors[C_NUMCOLORS]; 97 #endif 98 99 void 100 printscol(const DISPLAY *dp) 101 { 102 FTSENT *p; 103 104 for (p = dp->list; p; p = p->fts_link) { 105 if (IS_NOPRINT(p)) 106 continue; 107 printaname(p, dp->s_inode, dp->s_block); 108 putchar('\n'); 109 } 110 } 111 112 /* 113 * print name in current style 114 */ 115 int 116 printname(const char *name) 117 { 118 if (f_octal || f_octal_escape) 119 return prn_octal(name); 120 else if (f_nonprint) 121 return prn_printable(name); 122 else 123 return prn_normal(name); 124 } 125 126 void 127 printlong(const DISPLAY *dp) 128 { 129 struct stat *sp; 130 FTSENT *p; 131 NAMES *np; 132 char buf[20]; 133 #ifdef COLORLS 134 int color_printed = 0; 135 #endif 136 137 if ((dp->list == NULL || dp->list->fts_level != FTS_ROOTLEVEL) && 138 (f_longform || f_size)) { 139 printf("total %lu\n", howmany(dp->btotal, blocksize)); 140 } 141 142 for (p = dp->list; p; p = p->fts_link) { 143 if (IS_NOPRINT(p)) 144 continue; 145 sp = p->fts_statp; 146 if (f_inode) 147 printf("%*ju ", dp->s_inode, (uintmax_t)sp->st_ino); 148 if (f_size) 149 printf("%*jd ", 150 dp->s_block, howmany(sp->st_blocks, blocksize)); 151 strmode(sp->st_mode, buf); 152 np = p->fts_pointer; 153 printf("%s %*u %-*s %-*s ", buf, dp->s_nlink, 154 sp->st_nlink, dp->s_user, np->user, dp->s_group, 155 np->group); 156 if (f_flags) 157 printf("%-*s ", dp->s_flags, np->flags); 158 if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode)) 159 printf("%3d, 0x%08x ", 160 major(sp->st_rdev), (u_int)minor(sp->st_rdev)); 161 else if (dp->bcfile) 162 printf("%*s%*jd ", 163 8 - dp->s_size, "", dp->s_size, (intmax_t)sp->st_size); 164 else 165 printsize(dp->s_size, sp->st_size); 166 if (f_accesstime) 167 printtime(sp->st_atim); 168 else if (f_statustime) 169 printtime(sp->st_ctim); 170 else 171 printtime(sp->st_mtim); 172 putchar(' '); 173 #ifdef COLORLS 174 if (f_color) 175 color_printed = colortype(sp->st_mode); 176 #endif 177 printname(p->fts_name); 178 #ifdef COLORLS 179 if (f_color && color_printed) 180 endcolor(0); 181 #endif 182 if (f_type) 183 printtype(sp->st_mode); 184 if (S_ISLNK(sp->st_mode)) 185 printlink(p); 186 putchar('\n'); 187 } 188 } 189 190 void 191 printstream(const DISPLAY *dp) 192 { 193 FTSENT *p; 194 int chcnt; 195 196 for (p = dp->list, chcnt = 0; p; p = p->fts_link) { 197 if (p->fts_number == NO_PRINT) 198 continue; 199 /* XXX strlen does not take octal escapes into account. */ 200 if (strlen(p->fts_name) + chcnt + 201 (p->fts_link ? 2 : 0) >= (unsigned)termwidth) { 202 putchar('\n'); 203 chcnt = 0; 204 } 205 chcnt += printaname(p, dp->s_inode, dp->s_block); 206 if (p->fts_link) { 207 printf(", "); 208 chcnt += 2; 209 } 210 } 211 if (chcnt) 212 putchar('\n'); 213 } 214 215 void 216 printcol(const DISPLAY *dp) 217 { 218 static FTSENT **array; 219 static int lastentries = -1; 220 FTSENT *p; 221 FTSENT **narray; 222 int base; 223 int chcnt; 224 int cnt; 225 int col; 226 int colwidth; 227 int endcol; 228 int num; 229 int numcols; 230 int numrows; 231 int row; 232 int tabwidth; 233 234 if (f_notabs) 235 tabwidth = 1; 236 else 237 tabwidth = 8; 238 239 /* 240 * Have to do random access in the linked list -- build a table 241 * of pointers. 242 */ 243 if (dp->entries > lastentries) { 244 lastentries = dp->entries; 245 if ((narray = 246 realloc(array, dp->entries * sizeof(FTSENT *))) == NULL) { 247 warn(NULL); 248 printscol(dp); 249 return; 250 } 251 lastentries = dp->entries; 252 array = narray; 253 } 254 for (p = dp->list, num = 0; p; p = p->fts_link) 255 if (p->fts_number != NO_PRINT) 256 array[num++] = p; 257 258 colwidth = dp->maxlen; 259 if (f_inode) 260 colwidth += dp->s_inode + 1; 261 if (f_size) 262 colwidth += dp->s_block + 1; 263 if (f_type) 264 colwidth += 1; 265 266 colwidth = rounddown2(colwidth + tabwidth, tabwidth); 267 if (termwidth < 2 * colwidth) { 268 printscol(dp); 269 return; 270 } 271 numcols = termwidth / colwidth; 272 numrows = num / numcols; 273 if (num % numcols) 274 ++numrows; 275 276 if ((dp->list == NULL || dp->list->fts_level != FTS_ROOTLEVEL) && 277 (f_longform || f_size)) { 278 printf("total %lu\n", howmany(dp->btotal, blocksize)); 279 } 280 281 /* counter if f_sortacross, else case-by-case */ 282 base = 0; 283 284 for (row = 0; row < numrows; ++row) { 285 endcol = colwidth; 286 if (!f_sortacross) 287 base = row; 288 for (col = 0, chcnt = 0; col < numcols; ++col) { 289 chcnt += printaname(array[base], dp->s_inode, 290 dp->s_block); 291 if (f_sortacross) 292 base++; 293 else 294 base += numrows; 295 if (base >= num) 296 break; 297 while ((cnt = (rounddown2(chcnt + tabwidth, tabwidth))) 298 <= endcol) { 299 if (f_sortacross && col + 1 >= numcols) 300 break; 301 putchar(f_notabs ? ' ' : '\t'); 302 chcnt = cnt; 303 } 304 endcol += colwidth; 305 } 306 putchar('\n'); 307 } 308 } 309 310 /* 311 * print [inode] [size] name 312 * return # of characters printed, no trailing characters. 313 */ 314 static int 315 printaname(const FTSENT *p, u_long inodefield, u_long sizefield) 316 { 317 struct stat *sp; 318 int chcnt; 319 #ifdef COLORLS 320 int color_printed = 0; 321 #endif 322 323 sp = p->fts_statp; 324 chcnt = 0; 325 if (f_inode) { 326 chcnt += printf("%*ju ", (int)inodefield, 327 (uintmax_t)sp->st_ino); 328 } 329 if (f_size) 330 chcnt += printf("%*jd ", 331 (int)sizefield, howmany(sp->st_blocks, blocksize)); 332 #ifdef COLORLS 333 if (f_color) 334 color_printed = colortype(sp->st_mode); 335 #endif 336 chcnt += printname(p->fts_name); 337 #ifdef COLORLS 338 if (f_color && color_printed) 339 endcolor(0); 340 #endif 341 if (f_type) 342 chcnt += printtype(sp->st_mode); 343 return (chcnt); 344 } 345 346 static void 347 printtime(const struct timespec stt) 348 { 349 char longstring[80]; 350 static time_t now; 351 const struct tm *ptime; 352 const char *format; 353 static char *lc_time; 354 static int posix_time; 355 356 #define SIXMONTHS ((365 / 2) * 86400) 357 358 if (now == 0) 359 now = time(NULL); 360 361 if (lc_time == NULL) { 362 lc_time = setlocale(LC_TIME, NULL); 363 posix_time = (strcmp(lc_time, "C") == 0); 364 } 365 366 if (f_timeformat) { 367 /* 368 * User specified format 369 */ 370 format = f_timeformat; 371 } else if (f_sectime) { 372 /* 373 * POSIX: Not covered by standard. If C/POSIX locale used 374 * the old convention of mmm dd hh:mm:ss yyyy is kept. 375 * Named locales use the extended ISO 8601 format without T: 376 * YYYY-DD-MM hh:mm:ss 377 */ 378 format = posix_time ? "%b %e %T %Y" : "%F %T"; 379 } else if (posix_time) { 380 /* 381 * POSIX: Future or older than 6 months returns equivalent of 382 * date "+%b %e %Y" 383 * If file was modified within the past 6 months, 384 * return equivalent of: date "+%b %e %H:%M" 385 */ 386 if ((stt.tv_sec > now) || (stt.tv_sec < now - SIXMONTHS)) 387 format = "%b %e %Y"; 388 else 389 format = "%b %e %R"; 390 } else { 391 /* 392 * Named locales use format DD-MMM-YYYY hh:mm 393 * Regardless of locale, English is used for month field 394 */ 395 format = "%d-%b-%Y %H:%M"; 396 } 397 398 /* 399 * If printing the nanotime field, always use GMT time 400 */ 401 if (f_nanotime) 402 ptime = gmtime(&(stt.tv_sec)); 403 else 404 ptime = localtime(&(stt.tv_sec)); 405 406 strftime_l(longstring, sizeof(longstring), format, ptime, NULL); 407 fputs(longstring, stdout); 408 if (f_nanotime) 409 printf(".%09ju", stt.tv_nsec); 410 } 411 412 static int 413 printtype(u_int mode) 414 { 415 416 if (f_slash) { 417 if ((mode & S_IFMT) == S_IFDIR) { 418 putchar('/'); 419 return (1); 420 } 421 return (0); 422 } 423 424 switch (mode & S_IFMT) { 425 case S_IFDIR: 426 putchar('/'); 427 return (1); 428 case S_IFIFO: 429 putchar('|'); 430 return (1); 431 case S_IFLNK: 432 putchar('@'); 433 return (1); 434 case S_IFSOCK: 435 putchar('='); 436 return (1); 437 case S_IFWHT: 438 putchar('%'); 439 return (1); 440 default: 441 break; 442 } 443 if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) { 444 putchar('*'); 445 return (1); 446 } 447 return (0); 448 } 449 450 #ifdef COLORLS 451 static int 452 putch(int c) 453 { 454 putchar(c); 455 return 0; 456 } 457 458 static int 459 writech(int c) 460 { 461 char tmp = (char)c; 462 463 write(STDOUT_FILENO, &tmp, 1); 464 return 0; 465 } 466 467 static void 468 printcolor(Colors c) 469 { 470 char *ansiseq; 471 472 if (colors[c].bold) 473 tputs(enter_bold, 1, putch); 474 475 if (colors[c].num[0] != -1) { 476 ansiseq = tgoto(ansi_fgcol, 0, colors[c].num[0]); 477 if (ansiseq) 478 tputs(ansiseq, 1, putch); 479 } 480 if (colors[c].num[1] != -1) { 481 ansiseq = tgoto(ansi_bgcol, 0, colors[c].num[1]); 482 if (ansiseq) 483 tputs(ansiseq, 1, putch); 484 } 485 } 486 487 static void 488 endcolor(int sig) 489 { 490 tputs(ansi_coloff, 1, sig ? writech : putch); 491 tputs(attrs_off, 1, sig ? writech : putch); 492 } 493 494 static int 495 colortype(mode_t mode) 496 { 497 switch (mode & S_IFMT) { 498 case S_IFDIR: 499 if (mode & S_IWOTH) 500 if (mode & S_ISTXT) 501 printcolor(C_WSDIR); 502 else 503 printcolor(C_WDIR); 504 else 505 printcolor(C_DIR); 506 return (1); 507 case S_IFLNK: 508 printcolor(C_LNK); 509 return (1); 510 case S_IFSOCK: 511 printcolor(C_SOCK); 512 return (1); 513 case S_IFIFO: 514 printcolor(C_FIFO); 515 return (1); 516 case S_IFBLK: 517 printcolor(C_BLK); 518 return (1); 519 case S_IFCHR: 520 printcolor(C_CHR); 521 return (1); 522 default:; 523 } 524 if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) { 525 if (mode & S_ISUID) 526 printcolor(C_SUID); 527 else if (mode & S_ISGID) 528 printcolor(C_SGID); 529 else 530 printcolor(C_EXEC); 531 return (1); 532 } 533 return (0); 534 } 535 536 void 537 parsecolors(const char *cs) 538 { 539 int i; 540 int j; 541 size_t len; 542 char c[2]; 543 short legacy_warn = 0; 544 545 if (cs == NULL) 546 cs = ""; /* LSCOLORS not set */ 547 len = strlen(cs); 548 for (i = 0; i < C_NUMCOLORS; i++) { 549 colors[i].bold = 0; 550 551 if (len <= 2 * (size_t)i) { 552 c[0] = defcolors[2 * i]; 553 c[1] = defcolors[2 * i + 1]; 554 } else { 555 c[0] = cs[2 * i]; 556 c[1] = cs[2 * i + 1]; 557 } 558 for (j = 0; j < 2; j++) { 559 /* Legacy colours used 0-7 */ 560 if (c[j] >= '0' && c[j] <= '7') { 561 colors[i].num[j] = c[j] - '0'; 562 if (!legacy_warn) { 563 warnx("LSCOLORS should use " 564 "characters a-h instead of 0-9 (" 565 "see the manual page)\n"); 566 } 567 legacy_warn = 1; 568 } else if (c[j] >= 'a' && c[j] <= 'h') 569 colors[i].num[j] = c[j] - 'a'; 570 else if (c[j] >= 'A' && c[j] <= 'H') { 571 colors[i].num[j] = c[j] - 'A'; 572 colors[i].bold = 1; 573 } else if (tolower((unsigned char)c[j]) == 'x') 574 colors[i].num[j] = -1; 575 else { 576 warnx("invalid character '%c' in LSCOLORS" 577 " env var\n", c[j]); 578 colors[i].num[j] = -1; 579 } 580 } 581 } 582 } 583 584 void 585 colorquit(int sig) 586 { 587 endcolor(sig); 588 589 signal(sig, SIG_DFL); 590 kill(getpid(), sig); 591 } 592 593 #endif /* COLORLS */ 594 595 static void 596 printlink(const FTSENT *p) 597 { 598 int lnklen; 599 char name[MAXPATHLEN + 1]; 600 char path[MAXPATHLEN + 1]; 601 602 if (p->fts_level == FTS_ROOTLEVEL) 603 snprintf(name, sizeof(name), "%s", p->fts_name); 604 else 605 snprintf(name, sizeof(name), 606 "%s/%s", p->fts_parent->fts_accpath, p->fts_name); 607 if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) { 608 fprintf(stderr, "\nls: %s: %s\n", name, strerror(errno)); 609 return; 610 } 611 path[lnklen] = '\0'; 612 printf(" -> "); 613 printname(path); 614 } 615 616 static void 617 printsize(size_t width, off_t bytes) 618 { 619 if (f_humanval) { 620 char buf[5]; 621 622 humanize_number(buf, sizeof(buf), (int64_t)bytes, "", 623 HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL); 624 printf("%5s ", buf); 625 } else 626 printf("%*jd ", (int)width, (uintmax_t)bytes); 627 } 628