gen_subs.c revision 1.23
1 /* $NetBSD: gen_subs.c,v 1.23 2002/01/31 19:27:54 tv Exp $ */ 2 3 /*- 4 * Copyright (c) 1992 Keith Muller. 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Keith Muller of the University of California, San Diego. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 */ 39 40 #include <sys/cdefs.h> 41 #if defined(__RCSID) && !defined(lint) 42 #if 0 43 static char sccsid[] = "@(#)gen_subs.c 8.1 (Berkeley) 5/31/93"; 44 #else 45 __RCSID("$NetBSD: gen_subs.c,v 1.23 2002/01/31 19:27:54 tv 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 54 #include <ctype.h> 55 #include <grp.h> 56 #include <pwd.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 #include <string.h> 60 #include <time.h> 61 #include <tzfile.h> 62 #include <unistd.h> 63 #include <utmp.h> 64 65 #include "pax.h" 66 #include "extern.h" 67 68 /* 69 * a collection of general purpose subroutines used by pax 70 */ 71 72 /* 73 * constants used by ls_list() when printing out archive members 74 */ 75 #define MODELEN 20 76 #define DATELEN 64 77 #define SIXMONTHS ((DAYSPERNYEAR / 2) * SECSPERDAY) 78 #define CURFRMT "%b %e %H:%M" 79 #define OLDFRMT "%b %e %Y" 80 #ifndef UT_NAMESIZE 81 #define UT_NAMESIZE 8 82 #endif 83 #define UT_GRPSIZE 6 84 85 /* 86 * ls_list() 87 * list the members of an archive in ls format 88 */ 89 90 void 91 ls_list(ARCHD *arcn, time_t now) 92 { 93 struct stat *sbp; 94 char f_mode[MODELEN]; 95 char f_date[DATELEN]; 96 const char *timefrmt, *user, *group; 97 98 /* 99 * if not verbose, just print the file name 100 */ 101 if (!vflag) { 102 (void)printf("%s\n", arcn->name); 103 (void)fflush(stdout); 104 return; 105 } 106 107 /* 108 * user wants long mode 109 */ 110 sbp = &(arcn->sb); 111 strmode(sbp->st_mode, f_mode); 112 113 /* 114 * time format based on age compared to the time pax was started. 115 */ 116 if ((sbp->st_mtime + SIXMONTHS) <= now) 117 timefrmt = OLDFRMT; 118 else 119 timefrmt = CURFRMT; 120 121 /* 122 * print file mode, link count, uid, gid and time 123 */ 124 if (strftime(f_date,DATELEN,timefrmt,localtime(&(sbp->st_mtime))) == 0) 125 f_date[0] = '\0'; 126 user = user_from_uid(sbp->st_uid, 0); 127 group = group_from_gid(sbp->st_gid, 0); 128 (void)printf("%s%2lu %-*s %-*s ", f_mode, (unsigned long)sbp->st_nlink, 129 UT_NAMESIZE, user ? user : "", UT_GRPSIZE, group ? group : ""); 130 131 /* 132 * print device id's for devices, or sizes for other nodes 133 */ 134 if ((arcn->type == PAX_CHR) || (arcn->type == PAX_BLK)) 135 (void)printf("%4lu,%4lu ", (long) MAJOR(sbp->st_rdev), 136 (long) MINOR(sbp->st_rdev)); 137 else { 138 (void)printf(OFFT_FP("9") " ", (OFFT_T)sbp->st_size); 139 } 140 141 /* 142 * print name and link info for hard and soft links 143 */ 144 (void)printf("%s %s", f_date, arcn->name); 145 if ((arcn->type == PAX_HLK) || (arcn->type == PAX_HRG)) 146 (void)printf(" == %s\n", arcn->ln_name); 147 else if (arcn->type == PAX_SLK) 148 (void)printf(" => %s\n", arcn->ln_name); 149 else 150 (void)putchar('\n'); 151 (void)fflush(stdout); 152 return; 153 } 154 155 /* 156 * tty_ls() 157 * print a short summary of file to tty. 158 */ 159 160 void 161 ls_tty(ARCHD *arcn) 162 { 163 char f_date[DATELEN]; 164 char f_mode[MODELEN]; 165 const char *timefrmt; 166 167 if ((arcn->sb.st_mtime + SIXMONTHS) <= time((time_t *)NULL)) 168 timefrmt = OLDFRMT; 169 else 170 timefrmt = CURFRMT; 171 172 /* 173 * convert time to string, and print 174 */ 175 if (strftime(f_date, DATELEN, timefrmt, 176 localtime(&(arcn->sb.st_mtime))) == 0) 177 f_date[0] = '\0'; 178 strmode(arcn->sb.st_mode, f_mode); 179 tty_prnt("%s%s %s\n", f_mode, f_date, arcn->name); 180 return; 181 } 182 183 /* 184 * zf_strncpy() 185 * copy src to dest up to len chars (stopping at first '\0'), when src is 186 * shorter than len, pads to len with '\0'. big performance win (and 187 * a lot easier to code) over strncpy(), then a strlen() then a 188 * memset(). (or doing the memset() first). 189 */ 190 191 void 192 zf_strncpy(char *dest, const char *src, int len) 193 { 194 char *stop; 195 196 stop = dest + len; 197 while ((dest < stop) && (*src != '\0')) 198 *dest++ = *src++; 199 while (dest < stop) 200 *dest++ = '\0'; 201 return; 202 } 203 204 /* 205 * l_strncpy() 206 * copy src to dest up to len chars (stopping at first '\0') 207 * Return: 208 * number of chars copied. (Note this is a real performance win over 209 * doing a strncpy() then a strlen() 210 */ 211 212 int 213 l_strncpy(char *dest, const char *src, int len) 214 { 215 char *stop; 216 char *start; 217 218 stop = dest + len; 219 start = dest; 220 while ((dest < stop) && (*src != '\0')) 221 *dest++ = *src++; 222 if (dest < stop) 223 *dest = '\0'; 224 return(dest - start); 225 } 226 227 /* 228 * asc_ul() 229 * convert hex/octal character string into a u_long. We do not have to 230 * check for overflow! (the headers in all supported formats are not large 231 * enough to create an overflow). 232 * NOTE: strings passed to us are NOT TERMINATED. 233 * Return: 234 * unsigned long value 235 */ 236 237 u_long 238 asc_ul(char *str, int len, int base) 239 { 240 char *stop; 241 u_long tval = 0; 242 243 stop = str + len; 244 245 /* 246 * skip over leading blanks and zeros 247 */ 248 while ((str < stop) && ((*str == ' ') || (*str == '0'))) 249 ++str; 250 251 /* 252 * for each valid digit, shift running value (tval) over to next digit 253 * and add next digit 254 */ 255 if (base == HEX) { 256 while (str < stop) { 257 if ((*str >= '0') && (*str <= '9')) 258 tval = (tval << 4) + (*str++ - '0'); 259 else if ((*str >= 'A') && (*str <= 'F')) 260 tval = (tval << 4) + 10 + (*str++ - 'A'); 261 else if ((*str >= 'a') && (*str <= 'f')) 262 tval = (tval << 4) + 10 + (*str++ - 'a'); 263 else 264 break; 265 } 266 } else { 267 while ((str < stop) && (*str >= '0') && (*str <= '7')) 268 tval = (tval << 3) + (*str++ - '0'); 269 } 270 return(tval); 271 } 272 273 /* 274 * ul_asc() 275 * convert an unsigned long into an hex/oct ascii string. pads with LEADING 276 * ascii 0's to fill string completely 277 * NOTE: the string created is NOT TERMINATED. 278 */ 279 280 int 281 ul_asc(u_long val, char *str, int len, int base) 282 { 283 char *pt; 284 u_long digit; 285 286 /* 287 * WARNING str is not '\0' terminated by this routine 288 */ 289 pt = str + len - 1; 290 291 /* 292 * do a tailwise conversion (start at right most end of string to place 293 * least significant digit). Keep shifting until conversion value goes 294 * to zero (all digits were converted) 295 */ 296 if (base == HEX) { 297 while (pt >= str) { 298 if ((digit = (val & 0xf)) < 10) 299 *pt-- = '0' + (char)digit; 300 else 301 *pt-- = 'a' + (char)(digit - 10); 302 if ((val = (val >> 4)) == (u_long)0) 303 break; 304 } 305 } else { 306 while (pt >= str) { 307 *pt-- = '0' + (char)(val & 0x7); 308 if ((val = (val >> 3)) == (u_long)0) 309 break; 310 } 311 } 312 313 /* 314 * pad with leading ascii ZEROS. We return -1 if we ran out of space. 315 */ 316 while (pt >= str) 317 *pt-- = '0'; 318 if (val != (u_long)0) 319 return(-1); 320 return(0); 321 } 322 323 #ifndef NET2_STAT 324 /* 325 * asc_ull() 326 * convert hex/octal character string into a unsigned long long. We do 327 * not have to to check for overflow! (the headers in all supported 328 * formats are not large enough to create an overflow). 329 * NOTE: strings passed to us are NOT TERMINATED. 330 * Return: 331 * unsigned long long value 332 */ 333 334 unsigned long long 335 asc_ull(char *str, int len, int base) 336 { 337 char *stop; 338 unsigned long long tval = 0; 339 340 stop = str + len; 341 342 /* 343 * skip over leading blanks and zeros 344 */ 345 while ((str < stop) && ((*str == ' ') || (*str == '0'))) 346 ++str; 347 348 /* 349 * for each valid digit, shift running value (tval) over to next digit 350 * and add next digit 351 */ 352 if (base == HEX) { 353 while (str < stop) { 354 if ((*str >= '0') && (*str <= '9')) 355 tval = (tval << 4) + (*str++ - '0'); 356 else if ((*str >= 'A') && (*str <= 'F')) 357 tval = (tval << 4) + 10 + (*str++ - 'A'); 358 else if ((*str >= 'a') && (*str <= 'f')) 359 tval = (tval << 4) + 10 + (*str++ - 'a'); 360 else 361 break; 362 } 363 } else { 364 while ((str < stop) && (*str >= '0') && (*str <= '7')) 365 tval = (tval << 3) + (*str++ - '0'); 366 } 367 return(tval); 368 } 369 370 /* 371 * ull_asc() 372 * convert an unsigned long long into a hex/oct ascii string. pads with 373 * LEADING ascii 0's to fill string completely 374 * NOTE: the string created is NOT TERMINATED. 375 */ 376 377 int 378 ull_asc(unsigned long long val, char *str, int len, int base) 379 { 380 char *pt; 381 unsigned long long digit; 382 383 /* 384 * WARNING str is not '\0' terminated by this routine 385 */ 386 pt = str + len - 1; 387 388 /* 389 * do a tailwise conversion (start at right most end of string to place 390 * least significant digit). Keep shifting until conversion value goes 391 * to zero (all digits were converted) 392 */ 393 if (base == HEX) { 394 while (pt >= str) { 395 if ((digit = (val & 0xf)) < 10) 396 *pt-- = '0' + (char)digit; 397 else 398 *pt-- = 'a' + (char)(digit - 10); 399 if ((val = (val >> 4)) == (unsigned long long)0) 400 break; 401 } 402 } else { 403 while (pt >= str) { 404 *pt-- = '0' + (char)(val & 0x7); 405 if ((val = (val >> 3)) == (unsigned long long)0) 406 break; 407 } 408 } 409 410 /* 411 * pad with leading ascii ZEROS. We return -1 if we ran out of space. 412 */ 413 while (pt >= str) 414 *pt-- = '0'; 415 if (val != (unsigned long long)0) 416 return(-1); 417 return(0); 418 } 419 #endif 420 421 int 422 check_Aflag(void) 423 { 424 425 if (Aflag > 0) 426 return 1; 427 if (Aflag == 0) { 428 Aflag = -1; 429 tty_warn(0, 430 "Removing leading / from absolute path names in the archive"); 431 } 432 return 0; 433 } 434
Indexes created Mon Sep 29 21:09:56 GMT 2025