1 /* $OpenBSD: gen_subs.c,v 1.8 1997/09/01 18:29:51 deraadt Exp $ */ 2 /* $NetBSD: gen_subs.c,v 1.5 1995/03/21 09:07:26 cgd Exp $ */ 3 4 /*- 5 * Copyright (c) 1992 Keith Muller. 6 * Copyright (c) 1992, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * Keith Muller of the University of California, San Diego. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 */ 40 41 #ifndef lint 42 #if 0 43 static char sccsid[] = "@(#)gen_subs.c 8.1 (Berkeley) 5/31/93"; 44 #else 45 static char rcsid[] = "$OpenBSD: gen_subs.c,v 1.8 1997/09/01 18:29:51 deraadt Exp $"; 46 #endif 47 #endif /* not lint */ 48 49 #include <sys/types.h> 50 #include <sys/time.h> 51 #include <sys/stat.h> 52 #include <sys/param.h> 53 #include <stdio.h> 54 #include <tzfile.h> 55 #include <utmp.h> 56 #include <unistd.h> 57 #include <stdlib.h> 58 #include <string.h> 59 #include "pax.h" 60 #include "extern.h" 61 62 /* 63 * a collection of general purpose subroutines used by pax 64 */ 65 66 /* 67 * constants used by ls_list() when printing out archive members 68 */ 69 #define MODELEN 20 70 #define DATELEN 64 71 #define SIXMONTHS ((DAYSPERNYEAR / 2) * SECSPERDAY) 72 #define CURFRMT "%b %e %H:%M" 73 #define OLDFRMT "%b %e %Y" 74 #ifndef UT_NAMESIZE 75 #define UT_NAMESIZE 8 76 #endif 77 #define UT_GRPSIZE 6 78 79 /* 80 * ls_list() 81 * list the members of an archive in ls format 82 */ 83 84 #ifdef __STDC__ 85 void 86 ls_list(register ARCHD *arcn, time_t now, FILE *fp) 87 #else 88 void 89 ls_list(arcn, now, fp) 90 register ARCHD *arcn; 91 time_t now; 92 FILE *fp; 93 #endif 94 { 95 register struct stat *sbp; 96 char f_mode[MODELEN]; 97 char f_date[DATELEN]; 98 char *timefrmt; 99 100 /* 101 * if not verbose, just print the file name 102 */ 103 if (!vflag) { 104 (void)fprintf(fp, "%s\n", arcn->name); 105 (void)fflush(fp); 106 return; 107 } 108 109 /* 110 * user wants long mode 111 */ 112 sbp = &(arcn->sb); 113 strmode(sbp->st_mode, f_mode); 114 115 if (ltmfrmt == NULL) { 116 /* 117 * no locale specified format. time format based on age 118 * compared to the time pax was started. 119 */ 120 if ((sbp->st_mtime + SIXMONTHS) <= now) 121 timefrmt = OLDFRMT; 122 else 123 timefrmt = CURFRMT; 124 } else 125 timefrmt = ltmfrmt; 126 127 /* 128 * print file mode, link count, uid, gid and time 129 */ 130 if (strftime(f_date,DATELEN,timefrmt,localtime(&(sbp->st_mtime))) == 0) 131 f_date[0] = '\0'; 132 (void)fprintf(fp, "%s%2u %-*s %-*s ", f_mode, sbp->st_nlink, 133 UT_NAMESIZE, name_uid(sbp->st_uid, 1), UT_GRPSIZE, 134 name_gid(sbp->st_gid, 1)); 135 136 /* 137 * print device id's for devices, or sizes for other nodes 138 */ 139 if ((arcn->type == PAX_CHR) || (arcn->type == PAX_BLK)) 140 # ifdef NET2_STAT 141 (void)fprintf(fp, "%4u,%4u ", MAJOR(sbp->st_rdev), 142 # else 143 (void)fprintf(fp, "%4lu,%4lu ", (unsigned long)MAJOR(sbp->st_rdev), 144 # endif 145 (unsigned long)MINOR(sbp->st_rdev)); 146 else { 147 # ifdef NET2_STAT 148 (void)fprintf(fp, "%9lu ", sbp->st_size); 149 # else 150 (void)fprintf(fp, "%9qu ", sbp->st_size); 151 # endif 152 } 153 154 /* 155 * print name and link info for hard and soft links 156 */ 157 (void)fprintf(fp, "%s %s", f_date, arcn->name); 158 if ((arcn->type == PAX_HLK) || (arcn->type == PAX_HRG)) 159 (void)fprintf(fp, " == %s\n", arcn->ln_name); 160 else if (arcn->type == PAX_SLK) 161 (void)fprintf(fp, " => %s\n", arcn->ln_name); 162 else 163 (void)putc('\n', fp); 164 (void)fflush(fp); 165 return; 166 } 167 168 /* 169 * tty_ls() 170 * print a short summary of file to tty. 171 */ 172 173 #ifdef __STDC__ 174 void 175 ls_tty(register ARCHD *arcn) 176 #else 177 void 178 ls_tty(arcn) 179 register ARCHD *arcn; 180 #endif 181 { 182 char f_date[DATELEN]; 183 char f_mode[MODELEN]; 184 char *timefrmt; 185 186 if (ltmfrmt == NULL) { 187 /* 188 * no locale specified format 189 */ 190 if ((arcn->sb.st_mtime + SIXMONTHS) <= time(NULL)) 191 timefrmt = OLDFRMT; 192 else 193 timefrmt = CURFRMT; 194 } else 195 timefrmt = ltmfrmt; 196 197 /* 198 * convert time to string, and print 199 */ 200 if (strftime(f_date, DATELEN, timefrmt, 201 localtime(&(arcn->sb.st_mtime))) == 0) 202 f_date[0] = '\0'; 203 strmode(arcn->sb.st_mode, f_mode); 204 tty_prnt("%s%s %s\n", f_mode, f_date, arcn->name); 205 return; 206 } 207 208 /* 209 * l_strncpy() 210 * copy src to dest up to len chars (stopping at first '\0'). 211 * when src is shorter than len, pads to len with '\0'. 212 * Return: 213 * number of chars copied. (Note this is a real performance win over 214 * doing a strncpy(), a strlen(), and then a possible memset()) 215 */ 216 217 #ifdef __STDC__ 218 int 219 l_strncpy(register char *dest, register char *src, int len) 220 #else 221 int 222 l_strncpy(dest, src, len) 223 register char *dest; 224 register char *src; 225 int len; 226 #endif 227 { 228 register char *stop; 229 register char *start; 230 231 stop = dest + len; 232 start = dest; 233 while ((dest < stop) && (*src != '\0')) 234 *dest++ = *src++; 235 len = dest - start; 236 while (dest < stop) 237 *dest++ = '\0'; 238 return(len); 239 } 240 241 /* 242 * asc_ul() 243 * convert hex/octal character string into a u_long. We do not have to 244 * check for overflow! (the headers in all supported formats are not large 245 * enough to create an overflow). 246 * NOTE: strings passed to us are NOT TERMINATED. 247 * Return: 248 * unsigned long value 249 */ 250 251 #ifdef __STDC__ 252 u_long 253 asc_ul(register char *str, int len, register int base) 254 #else 255 u_long 256 asc_ul(str, len, base) 257 register char *str; 258 int len; 259 register int base; 260 #endif 261 { 262 register char *stop; 263 u_long tval = 0; 264 265 stop = str + len; 266 267 /* 268 * skip over leading blanks and zeros 269 */ 270 while ((str < stop) && ((*str == ' ') || (*str == '0'))) 271 ++str; 272 273 /* 274 * for each valid digit, shift running value (tval) over to next digit 275 * and add next digit 276 */ 277 if (base == HEX) { 278 while (str < stop) { 279 if ((*str >= '0') && (*str <= '9')) 280 tval = (tval << 4) + (*str++ - '0'); 281 else if ((*str >= 'A') && (*str <= 'F')) 282 tval = (tval << 4) + 10 + (*str++ - 'A'); 283 else if ((*str >= 'a') && (*str <= 'f')) 284 tval = (tval << 4) + 10 + (*str++ - 'a'); 285 else 286 break; 287 } 288 } else { 289 while ((str < stop) && (*str >= '0') && (*str <= '7')) 290 tval = (tval << 3) + (*str++ - '0'); 291 } 292 return(tval); 293 } 294 295 /* 296 * ul_asc() 297 * convert an unsigned long into an hex/oct ascii string. pads with LEADING 298 * ascii 0's to fill string completely 299 * NOTE: the string created is NOT TERMINATED. 300 */ 301 302 #ifdef __STDC__ 303 int 304 ul_asc(u_long val, register char *str, register int len, register int base) 305 #else 306 int 307 ul_asc(val, str, len, base) 308 u_long val; 309 register char *str; 310 register int len; 311 register int base; 312 #endif 313 { 314 register char *pt; 315 u_long digit; 316 317 /* 318 * WARNING str is not '\0' terminated by this routine 319 */ 320 pt = str + len - 1; 321 322 /* 323 * do a tailwise conversion (start at right most end of string to place 324 * least significant digit). Keep shifting until conversion value goes 325 * to zero (all digits were converted) 326 */ 327 if (base == HEX) { 328 while (pt >= str) { 329 if ((digit = (val & 0xf)) < 10) 330 *pt-- = '0' + (char)digit; 331 else 332 *pt-- = 'a' + (char)(digit - 10); 333 if ((val = (val >> 4)) == (u_long)0) 334 break; 335 } 336 } else { 337 while (pt >= str) { 338 *pt-- = '0' + (char)(val & 0x7); 339 if ((val = (val >> 3)) == (u_long)0) 340 break; 341 } 342 } 343 344 /* 345 * pad with leading ascii ZEROS. We return -1 if we ran out of space. 346 */ 347 while (pt >= str) 348 *pt-- = '0'; 349 if (val != (u_long)0) 350 return(-1); 351 return(0); 352 } 353 354 #ifndef NET2_STAT 355 /* 356 * asc_uqd() 357 * convert hex/octal character string into a u_quad_t. We do not have to 358 * check for overflow! (the headers in all supported formats are not large 359 * enough to create an overflow). 360 * NOTE: strings passed to us are NOT TERMINATED. 361 * Return: 362 * u_quad_t value 363 */ 364 365 #ifdef __STDC__ 366 u_quad_t 367 asc_uqd(register char *str, int len, register int base) 368 #else 369 u_quad_t 370 asc_uqd(str, len, base) 371 register char *str; 372 int len; 373 register int base; 374 #endif 375 { 376 register char *stop; 377 u_quad_t tval = 0; 378 379 stop = str + len; 380 381 /* 382 * skip over leading blanks and zeros 383 */ 384 while ((str < stop) && ((*str == ' ') || (*str == '0'))) 385 ++str; 386 387 /* 388 * for each valid digit, shift running value (tval) over to next digit 389 * and add next digit 390 */ 391 if (base == HEX) { 392 while (str < stop) { 393 if ((*str >= '0') && (*str <= '9')) 394 tval = (tval << 4) + (*str++ - '0'); 395 else if ((*str >= 'A') && (*str <= 'F')) 396 tval = (tval << 4) + 10 + (*str++ - 'A'); 397 else if ((*str >= 'a') && (*str <= 'f')) 398 tval = (tval << 4) + 10 + (*str++ - 'a'); 399 else 400 break; 401 } 402 } else { 403 while ((str < stop) && (*str >= '0') && (*str <= '7')) 404 tval = (tval << 3) + (*str++ - '0'); 405 } 406 return(tval); 407 } 408 409 /* 410 * uqd_asc() 411 * convert an u_quad_t into a hex/oct ascii string. pads with LEADING 412 * ascii 0's to fill string completely 413 * NOTE: the string created is NOT TERMINATED. 414 */ 415 416 #ifdef __STDC__ 417 int 418 uqd_asc(u_quad_t val, register char *str, register int len, register int base) 419 #else 420 int 421 uqd_asc(val, str, len, base) 422 u_quad_t val; 423 register char *str; 424 register int len; 425 register int base; 426 #endif 427 { 428 register char *pt; 429 u_quad_t digit; 430 431 /* 432 * WARNING str is not '\0' terminated by this routine 433 */ 434 pt = str + len - 1; 435 436 /* 437 * do a tailwise conversion (start at right most end of string to place 438 * least significant digit). Keep shifting until conversion value goes 439 * to zero (all digits were converted) 440 */ 441 if (base == HEX) { 442 while (pt >= str) { 443 if ((digit = (val & 0xf)) < 10) 444 *pt-- = '0' + (char)digit; 445 else 446 *pt-- = 'a' + (char)(digit - 10); 447 if ((val = (val >> 4)) == (u_quad_t)0) 448 break; 449 } 450 } else { 451 while (pt >= str) { 452 *pt-- = '0' + (char)(val & 0x7); 453 if ((val = (val >> 3)) == (u_quad_t)0) 454 break; 455 } 456 } 457 458 /* 459 * pad with leading ascii ZEROS. We return -1 if we ran out of space. 460 */ 461 while (pt >= str) 462 *pt-- = '0'; 463 if (val != (u_quad_t)0) 464 return(-1); 465 return(0); 466 } 467 #endif 468