1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 33 #ifndef lint 34 static const char copyright[] = 35 "@(#) Copyright (c) 1993\n\ 36 The Regents of the University of California. All rights reserved.\n"; 37 #endif 38 39 40 #include <sys/types.h> 41 #include <sys/stat.h> 42 #include <sys/time.h> 43 44 #include <ctype.h> 45 #include <err.h> 46 #include <errno.h> 47 #include <fcntl.h> 48 #include <libgen.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <time.h> 53 #include <unistd.h> 54 55 static void stime_arg1(const char *, struct timespec *); 56 static void stime_arg2(const char *, int, struct timespec *); 57 static void stime_darg(const char *, struct timespec *); 58 static void stime_file(const char *, struct timespec *); 59 static int timeoffset(const char *); 60 static void usage(const char *); 61 62 int 63 main(int argc, char *argv[]) 64 { 65 struct stat sb; 66 struct timespec ts[2]; 67 int atflag; 68 int Aflag, aflag, cflag, mflag, ch, fd, len, rval, timeset; 69 char *p; 70 char *myname; 71 72 myname = basename(argv[0]); 73 Aflag = aflag = cflag = mflag = timeset = 0; 74 atflag = 0; 75 ts[0].tv_sec = ts[1].tv_sec = 0; 76 ts[0].tv_nsec = ts[1].tv_nsec = UTIME_NOW; 77 78 while ((ch = getopt(argc, argv, "A:acd:fhmr:t:")) != -1) 79 switch(ch) { 80 case 'A': 81 Aflag = timeoffset(optarg); 82 break; 83 case 'a': 84 aflag = 1; 85 break; 86 case 'c': 87 cflag = 1; 88 break; 89 case 'd': 90 timeset = 1; 91 stime_darg(optarg, ts); 92 break; 93 case 'f': 94 /* No-op for compatibility. */ 95 break; 96 case 'h': 97 cflag = 1; 98 atflag = AT_SYMLINK_NOFOLLOW; 99 break; 100 case 'm': 101 mflag = 1; 102 break; 103 case 'r': 104 timeset = 1; 105 stime_file(optarg, ts); 106 break; 107 case 't': 108 timeset = 1; 109 stime_arg1(optarg, ts); 110 break; 111 default: 112 usage(myname); 113 } 114 argc -= optind; 115 argv += optind; 116 117 if (aflag == 0 && mflag == 0) 118 aflag = mflag = 1; 119 120 if (timeset) { 121 if (Aflag) { 122 /* 123 * We're setting the time to an offset from a specified 124 * time. God knows why, but it means that we can set 125 * that time once and for all here. 126 */ 127 if (aflag) 128 ts[0].tv_sec += Aflag; 129 if (mflag) 130 ts[1].tv_sec += Aflag; 131 Aflag = 0; /* done our job */ 132 } 133 } else { 134 /* 135 * If no -r or -t flag, at least two operands, the first of 136 * which is an 8 or 10 digit number, use the obsolete time 137 * specification, otherwise use the current time. 138 */ 139 if (argc > 1) { 140 strtol(argv[0], &p, 10); 141 len = p - argv[0]; 142 if (*p == '\0' && (len == 8 || len == 10)) { 143 timeset = 1; 144 stime_arg2(*argv++, len == 10, ts); 145 } 146 } 147 /* Both times default to the same. */ 148 ts[1] = ts[0]; 149 } 150 151 if (!aflag) 152 ts[0].tv_nsec = UTIME_OMIT; 153 if (!mflag) 154 ts[1].tv_nsec = UTIME_OMIT; 155 156 if (*argv == NULL) 157 usage(myname); 158 159 if (Aflag) 160 cflag = 1; 161 162 for (rval = 0; *argv; ++argv) { 163 /* See if the file exists. */ 164 if (fstatat(AT_FDCWD, *argv, &sb, atflag) != 0) { 165 if (errno != ENOENT) { 166 rval = 1; 167 warn("%s", *argv); 168 continue; 169 } 170 if (!cflag) { 171 /* Create the file. */ 172 fd = open(*argv, 173 O_WRONLY | O_CREAT, DEFFILEMODE); 174 if (fd == -1) { 175 rval = 1; 176 warn("%s", *argv); 177 continue; 178 } 179 if (fstat(fd, &sb) < 0) { 180 warn("%s", *argv); 181 rval = 1; 182 } 183 if (close(fd) < 0) { 184 warn("%s", *argv); 185 rval = 1; 186 } 187 188 /* If using the current time, we're done. */ 189 if (!timeset) 190 continue; 191 } else 192 continue; 193 } 194 195 /* 196 * We're adjusting the times based on the file times, not a 197 * specified time (that gets handled above). 198 */ 199 if (Aflag) { 200 if (aflag) { 201 ts[0] = sb.st_atim; 202 ts[0].tv_sec += Aflag; 203 } 204 if (mflag) { 205 ts[1] = sb.st_mtim; 206 ts[1].tv_sec += Aflag; 207 } 208 } 209 210 if (!utimensat(AT_FDCWD, *argv, ts, atflag)) 211 continue; 212 213 rval = 1; 214 warn("%s", *argv); 215 } 216 exit(rval); 217 } 218 219 #define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2; 220 221 static void 222 stime_arg1(const char *arg, struct timespec *tvp) 223 { 224 time_t now; 225 struct tm *t; 226 int yearset; 227 char *p; 228 229 now = time(NULL); 230 if ((t = localtime(&now)) == NULL) 231 err(1, "localtime"); 232 /* [[CC]YY]MMDDhhmm[.SS] */ 233 if ((p = strchr(arg, '.')) == NULL) 234 t->tm_sec = 0; /* Seconds defaults to 0. */ 235 else { 236 if (strlen(p + 1) != 2) 237 goto terr; 238 *p++ = '\0'; 239 t->tm_sec = ATOI2(p); 240 } 241 242 yearset = 0; 243 switch(strlen(arg)) { 244 case 12: /* CCYYMMDDhhmm */ 245 t->tm_year = ATOI2(arg); 246 t->tm_year *= 100; 247 yearset = 1; 248 /* FALLTHROUGH */ 249 case 10: /* YYMMDDhhmm */ 250 if (yearset) { 251 yearset = ATOI2(arg); 252 t->tm_year += yearset; 253 } else { 254 yearset = ATOI2(arg); 255 if (yearset < 69) 256 t->tm_year = yearset + 2000; 257 else 258 t->tm_year = yearset + 1900; 259 } 260 t->tm_year -= 1900; /* Convert to UNIX time. */ 261 /* FALLTHROUGH */ 262 case 8: /* MMDDhhmm */ 263 t->tm_mon = ATOI2(arg); 264 --t->tm_mon; /* Convert from 01-12 to 00-11 */ 265 t->tm_mday = ATOI2(arg); 266 t->tm_hour = ATOI2(arg); 267 t->tm_min = ATOI2(arg); 268 break; 269 default: 270 goto terr; 271 } 272 273 t->tm_isdst = -1; /* Figure out DST. */ 274 tvp[0].tv_sec = tvp[1].tv_sec = mktime(t); 275 if (tvp[0].tv_sec == -1) 276 goto terr; 277 278 tvp[0].tv_nsec = tvp[1].tv_nsec = 0; 279 return; 280 281 terr: 282 errx(1, "out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]"); 283 } 284 285 static void 286 stime_arg2(const char *arg, int year, struct timespec *tvp) 287 { 288 time_t now; 289 struct tm *t; 290 291 now = time(NULL); 292 if ((t = localtime(&now)) == NULL) 293 err(1, "localtime"); 294 295 t->tm_mon = ATOI2(arg); /* MMDDhhmm[yy] */ 296 --t->tm_mon; /* Convert from 01-12 to 00-11 */ 297 t->tm_mday = ATOI2(arg); 298 t->tm_hour = ATOI2(arg); 299 t->tm_min = ATOI2(arg); 300 if (year) { 301 t->tm_year = ATOI2(arg); 302 if (t->tm_year < 39) /* support 2000-2038 not 1902-1969 */ 303 t->tm_year += 100; 304 } 305 306 t->tm_isdst = -1; /* Figure out DST. */ 307 tvp[0].tv_sec = tvp[1].tv_sec = mktime(t); 308 if (tvp[0].tv_sec == -1) 309 errx(1, 310 "out of range or illegal time specification: MMDDhhmm[yy]"); 311 312 tvp[0].tv_nsec = tvp[1].tv_nsec = 0; 313 } 314 315 static void 316 stime_darg(const char *arg, struct timespec *tvp) 317 { 318 struct tm t = { .tm_sec = 0 }; 319 const char *fmt, *colon; 320 char *p; 321 int val, isutc = 0; 322 323 tvp[0].tv_nsec = 0; 324 t.tm_isdst = -1; 325 colon = strchr(arg, ':'); 326 if (colon == NULL || strchr(colon + 1, ':') == NULL) 327 goto bad; 328 fmt = strchr(arg, 'T') != NULL ? "%Y-%m-%dT%H:%M:%S" : 329 "%Y-%m-%d %H:%M:%S"; 330 p = strptime(arg, fmt, &t); 331 if (p == NULL) 332 goto bad; 333 /* POSIX: must have at least one digit after dot */ 334 if ((*p == '.' || *p == ',') && isdigit((unsigned char)p[1])) { 335 p++; 336 val = 100000000; 337 while (isdigit((unsigned char)*p)) { 338 tvp[0].tv_nsec += val * (*p - '0'); 339 p++; 340 val /= 10; 341 } 342 } 343 if (*p == 'Z') { 344 isutc = 1; 345 p++; 346 } 347 if (*p != '\0') 348 goto bad; 349 350 tvp[0].tv_sec = isutc ? timegm(&t) : mktime(&t); 351 352 tvp[1] = tvp[0]; 353 return; 354 355 bad: 356 errx(1, "out of range or illegal time specification: YYYY-MM-DDThh:mm:SS[.frac][tz]"); 357 } 358 359 /* Calculate a time offset in seconds, given an arg of the format [-]HHMMSS. */ 360 int 361 timeoffset(const char *arg) 362 { 363 int offset; 364 int isneg; 365 366 offset = 0; 367 isneg = *arg == '-'; 368 if (isneg) 369 arg++; 370 switch (strlen(arg)) { 371 default: /* invalid */ 372 errx(1, "Invalid offset spec, must be [-][[HH]MM]SS"); 373 374 case 6: /* HHMMSS */ 375 offset = ATOI2(arg); 376 /* FALLTHROUGH */ 377 case 4: /* MMSS */ 378 offset = offset * 60 + ATOI2(arg); 379 /* FALLTHROUGH */ 380 case 2: /* SS */ 381 offset = offset * 60 + ATOI2(arg); 382 } 383 if (isneg) 384 return (-offset); 385 else 386 return (offset); 387 } 388 389 static void 390 stime_file(const char *fname, struct timespec *tsp) 391 { 392 struct stat sb; 393 394 if (stat(fname, &sb)) 395 err(1, "%s", fname); 396 tsp[0] = sb.st_atim; 397 tsp[1] = sb.st_mtim; 398 } 399 400 static void 401 usage(const char *myname) 402 { 403 fprintf(stderr, "usage: %s [-A [-][[hh]mm]SS] [-achm] [-r file] " 404 "[-t [[CC]YY]MMDDhhmm[.SS]]\n" 405 " [-d YYYY-MM-DDThh:mm:SS[.frac][tz]] " 406 "file ...\n", myname); 407 exit(1); 408 } 409