gen_subs.c revision 114583
1/*- 2 * Copyright (c) 1992 Keith Muller. 3 * Copyright (c) 1992, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Keith Muller of the University of California, San Diego. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 */ 37 38#ifndef lint 39#if 0 40static char sccsid[] = "@(#)gen_subs.c 8.1 (Berkeley) 5/31/93"; 41#endif 42#endif /* not lint */ 43#include <sys/cdefs.h> 44__FBSDID("$FreeBSD: head/bin/pax/gen_subs.c 114583 2003-05-03 16:39:34Z markm $"); 45 46#include <sys/types.h> 47#include <sys/time.h> 48#include <sys/stat.h> 49#include <langinfo.h> 50#include <stdint.h> 51#include <stdio.h> 52#include <utmp.h> 53#include <unistd.h> 54#include <stdlib.h> 55#include <string.h> 56#include "pax.h" 57#include "extern.h" 58 59/* 60 * a collection of general purpose subroutines used by pax 61 */ 62 63/* 64 * constants used by ls_list() when printing out archive members 65 */ 66#define MODELEN 20 67#define DATELEN 64 68#define SIXMONTHS ((365 / 2) * 86400) 69#define CURFRMTM "%b %e %H:%M" 70#define OLDFRMTM "%b %e %Y" 71#define CURFRMTD "%e %b %H:%M" 72#define OLDFRMTD "%e %b %Y" 73#ifndef UT_NAMESIZE 74#define UT_NAMESIZE 8 75#endif 76#define UT_GRPSIZE 6 77 78static int d_first = -1; 79 80/* 81 * ls_list() 82 * list the members of an archive in ls format 83 */ 84 85void 86ls_list(ARCHD *arcn, time_t now, FILE *fp) 87{ 88 struct stat *sbp; 89 char f_mode[MODELEN]; 90 char f_date[DATELEN]; 91 const char *timefrmt; 92 93 /* 94 * if not verbose, just print the file name 95 */ 96 if (!vflag) { 97 (void)fprintf(fp, "%s\n", arcn->name); 98 (void)fflush(fp); 99 return; 100 } 101 102 if (d_first < 0) 103 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 104 /* 105 * user wants long mode 106 */ 107 sbp = &(arcn->sb); 108 strmode(sbp->st_mode, f_mode); 109 110 /* 111 * time format based on age compared to the time pax was started. 112 */ 113 if ((sbp->st_mtime + SIXMONTHS) <= now) 114 timefrmt = d_first ? OLDFRMTD : OLDFRMTM; 115 else 116 timefrmt = d_first ? CURFRMTD : CURFRMTM; 117 118 /* 119 * print file mode, link count, uid, gid and time 120 */ 121 if (strftime(f_date,DATELEN,timefrmt,localtime(&(sbp->st_mtime))) == 0) 122 f_date[0] = '\0'; 123 (void)fprintf(fp, "%s%2u %-*s %-*s ", f_mode, sbp->st_nlink, 124 UT_NAMESIZE, name_uid(sbp->st_uid, 1), UT_GRPSIZE, 125 name_gid(sbp->st_gid, 1)); 126 127 /* 128 * print device id's for devices, or sizes for other nodes 129 */ 130 if ((arcn->type == PAX_CHR) || (arcn->type == PAX_BLK)) 131# ifdef NET2_STAT 132 (void)fprintf(fp, "%4u,%4u ", MAJOR(sbp->st_rdev), 133 MINOR(sbp->st_rdev)); 134# else 135 (void)fprintf(fp, "%4lu,%4lu ", (unsigned long)MAJOR(sbp->st_rdev), 136 (unsigned long)MINOR(sbp->st_rdev)); 137# endif 138 else { 139# ifdef NET2_STAT 140 (void)fprintf(fp, "%9lu ", sbp->st_size); 141# else 142 (void)fprintf(fp, "%9ju ", (uintmax_t)sbp->st_size); 143# endif 144 } 145 146 /* 147 * print name and link info for hard and soft links 148 */ 149 (void)fprintf(fp, "%s %s", f_date, arcn->name); 150 if ((arcn->type == PAX_HLK) || (arcn->type == PAX_HRG)) 151 (void)fprintf(fp, " == %s\n", arcn->ln_name); 152 else if (arcn->type == PAX_SLK) 153 (void)fprintf(fp, " => %s\n", arcn->ln_name); 154 else 155 (void)putc('\n', fp); 156 (void)fflush(fp); 157 return; 158} 159 160/* 161 * tty_ls() 162 * print a short summary of file to tty. 163 */ 164 165void 166ls_tty(ARCHD *arcn) 167{ 168 char f_date[DATELEN]; 169 char f_mode[MODELEN]; 170 const char *timefrmt; 171 172 if (d_first < 0) 173 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 174 175 if ((arcn->sb.st_mtime + SIXMONTHS) <= time(NULL)) 176 timefrmt = d_first ? OLDFRMTD : OLDFRMTM; 177 else 178 timefrmt = d_first ? CURFRMTD : CURFRMTM; 179 180 /* 181 * convert time to string, and print 182 */ 183 if (strftime(f_date, DATELEN, timefrmt, 184 localtime(&(arcn->sb.st_mtime))) == 0) 185 f_date[0] = '\0'; 186 strmode(arcn->sb.st_mode, f_mode); 187 tty_prnt("%s%s %s\n", f_mode, f_date, arcn->name); 188 return; 189} 190 191/* 192 * l_strncpy() 193 * copy src to dest up to len chars (stopping at first '\0'). 194 * when src is shorter than len, pads to len with '\0'. 195 * Return: 196 * number of chars copied. (Note this is a real performance win over 197 * doing a strncpy(), a strlen(), and then a possible memset()) 198 */ 199 200int 201l_strncpy(char *dest, const char *src, int len) 202{ 203 char *stop; 204 char *start; 205 206 stop = dest + len; 207 start = dest; 208 while ((dest < stop) && (*src != '\0')) 209 *dest++ = *src++; 210 len = dest - start; 211 while (dest < stop) 212 *dest++ = '\0'; 213 return(len); 214} 215 216/* 217 * asc_ul() 218 * convert hex/octal character string into a u_long. We do not have to 219 * check for overflow! (the headers in all supported formats are not large 220 * enough to create an overflow). 221 * NOTE: strings passed to us are NOT TERMINATED. 222 * Return: 223 * unsigned long value 224 */ 225 226u_long 227asc_ul(char *str, int len, int base) 228{ 229 char *stop; 230 u_long tval = 0; 231 232 stop = str + len; 233 234 /* 235 * skip over leading blanks and zeros 236 */ 237 while ((str < stop) && ((*str == ' ') || (*str == '0'))) 238 ++str; 239 240 /* 241 * for each valid digit, shift running value (tval) over to next digit 242 * and add next digit 243 */ 244 if (base == HEX) { 245 while (str < stop) { 246 if ((*str >= '0') && (*str <= '9')) 247 tval = (tval << 4) + (*str++ - '0'); 248 else if ((*str >= 'A') && (*str <= 'F')) 249 tval = (tval << 4) + 10 + (*str++ - 'A'); 250 else if ((*str >= 'a') && (*str <= 'f')) 251 tval = (tval << 4) + 10 + (*str++ - 'a'); 252 else 253 break; 254 } 255 } else { 256 while ((str < stop) && (*str >= '0') && (*str <= '7')) 257 tval = (tval << 3) + (*str++ - '0'); 258 } 259 return(tval); 260} 261 262/* 263 * ul_asc() 264 * convert an unsigned long into an hex/oct ascii string. pads with LEADING 265 * ascii 0's to fill string completely 266 * NOTE: the string created is NOT TERMINATED. 267 */ 268 269int 270ul_asc(u_long val, char *str, int len, int base) 271{ 272 char *pt; 273 u_long digit; 274 275 /* 276 * WARNING str is not '\0' terminated by this routine 277 */ 278 pt = str + len - 1; 279 280 /* 281 * do a tailwise conversion (start at right most end of string to place 282 * least significant digit). Keep shifting until conversion value goes 283 * to zero (all digits were converted) 284 */ 285 if (base == HEX) { 286 while (pt >= str) { 287 if ((digit = (val & 0xf)) < 10) 288 *pt-- = '0' + (char)digit; 289 else 290 *pt-- = 'a' + (char)(digit - 10); 291 if ((val = (val >> 4)) == (u_long)0) 292 break; 293 } 294 } else { 295 while (pt >= str) { 296 *pt-- = '0' + (char)(val & 0x7); 297 if ((val = (val >> 3)) == (u_long)0) 298 break; 299 } 300 } 301 302 /* 303 * pad with leading ascii ZEROS. We return -1 if we ran out of space. 304 */ 305 while (pt >= str) 306 *pt-- = '0'; 307 if (val != (u_long)0) 308 return(-1); 309 return(0); 310} 311 312#ifndef NET2_STAT 313/* 314 * asc_uqd() 315 * convert hex/octal character string into a u_quad_t. We do not have to 316 * check for overflow! (the headers in all supported formats are not large 317 * enough to create an overflow). 318 * NOTE: strings passed to us are NOT TERMINATED. 319 * Return: 320 * u_quad_t value 321 */ 322 323u_quad_t 324asc_uqd(char *str, int len, int base) 325{ 326 char *stop; 327 u_quad_t tval = 0; 328 329 stop = str + len; 330 331 /* 332 * skip over leading blanks and zeros 333 */ 334 while ((str < stop) && ((*str == ' ') || (*str == '0'))) 335 ++str; 336 337 /* 338 * for each valid digit, shift running value (tval) over to next digit 339 * and add next digit 340 */ 341 if (base == HEX) { 342 while (str < stop) { 343 if ((*str >= '0') && (*str <= '9')) 344 tval = (tval << 4) + (*str++ - '0'); 345 else if ((*str >= 'A') && (*str <= 'F')) 346 tval = (tval << 4) + 10 + (*str++ - 'A'); 347 else if ((*str >= 'a') && (*str <= 'f')) 348 tval = (tval << 4) + 10 + (*str++ - 'a'); 349 else 350 break; 351 } 352 } else { 353 while ((str < stop) && (*str >= '0') && (*str <= '7')) 354 tval = (tval << 3) + (*str++ - '0'); 355 } 356 return(tval); 357} 358 359/* 360 * uqd_asc() 361 * convert an u_quad_t into a hex/oct ascii string. pads with LEADING 362 * ascii 0's to fill string completely 363 * NOTE: the string created is NOT TERMINATED. 364 */ 365 366int 367uqd_asc(u_quad_t val, char *str, int len, int base) 368{ 369 char *pt; 370 u_quad_t digit; 371 372 /* 373 * WARNING str is not '\0' terminated by this routine 374 */ 375 pt = str + len - 1; 376 377 /* 378 * do a tailwise conversion (start at right most end of string to place 379 * least significant digit). Keep shifting until conversion value goes 380 * to zero (all digits were converted) 381 */ 382 if (base == HEX) { 383 while (pt >= str) { 384 if ((digit = (val & 0xf)) < 10) 385 *pt-- = '0' + (char)digit; 386 else 387 *pt-- = 'a' + (char)(digit - 10); 388 if ((val = (val >> 4)) == (u_quad_t)0) 389 break; 390 } 391 } else { 392 while (pt >= str) { 393 *pt-- = '0' + (char)(val & 0x7); 394 if ((val = (val >> 3)) == (u_quad_t)0) 395 break; 396 } 397 } 398 399 /* 400 * pad with leading ascii ZEROS. We return -1 if we ran out of space. 401 */ 402 while (pt >= str) 403 *pt-- = '0'; 404 if (val != (u_quad_t)0) 405 return(-1); 406 return(0); 407} 408#endif 409