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. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)gen_subs.c 8.1 (Berkeley) 5/31/93 34 * $FreeBSD: src/bin/pax/gen_subs.c,v 1.12.2.4 2002/03/12 17:49:17 phantom Exp $ 35 */ 36 37 #include <sys/types.h> 38 #include <sys/time.h> 39 #include <sys/stat.h> 40 #include <grp.h> 41 #include <langinfo.h> 42 #include <pwd.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <unistd.h> 47 #include "pax.h" 48 #include "extern.h" 49 50 /* 51 * a collection of general purpose subroutines used by pax 52 */ 53 54 /* 55 * constants used by ls_list() when printing out archive members 56 */ 57 #define MODELEN 20 58 #define DATELEN 64 59 #define SIXMONTHS ((365 / 2) * 86400) 60 #define CURFRMTM "%b %e %H:%M" 61 #define OLDFRMTM "%b %e %Y" 62 #define CURFRMTD "%e %b %H:%M" 63 #define OLDFRMTD "%e %b %Y" 64 65 static int d_first = -1; 66 67 /* 68 * ls_list() 69 * list the members of an archive in ls format 70 */ 71 72 void 73 ls_list(ARCHD *arcn, time_t now, FILE *fp) 74 { 75 struct stat *sbp; 76 char f_mode[MODELEN]; 77 char f_date[DATELEN]; 78 char *timefrmt; 79 const char *user, *group; 80 81 /* 82 * if not verbose, just print the file name 83 */ 84 if (!vflag) { 85 fprintf(fp, "%s\n", arcn->name); 86 fflush(fp); 87 return; 88 } 89 90 if (d_first < 0) 91 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 92 /* 93 * user wants long mode 94 */ 95 sbp = &(arcn->sb); 96 strmode(sbp->st_mode, f_mode); 97 98 /* 99 * time format based on age compared to the time pax was started. 100 */ 101 if ((sbp->st_mtime + SIXMONTHS) <= now) 102 timefrmt = d_first ? OLDFRMTD : OLDFRMTM; 103 else 104 timefrmt = d_first ? CURFRMTD : CURFRMTM; 105 106 /* 107 * print file mode, link count, uid, gid and time 108 */ 109 if (strftime(f_date,DATELEN,timefrmt,localtime(&(sbp->st_mtime))) == 0) 110 f_date[0] = '\0'; 111 user = user_from_uid(sbp->st_uid, 0); 112 group = group_from_gid(sbp->st_gid, 0); 113 fprintf(fp, "%s%2u %-16s %-6s ", f_mode, sbp->st_nlink, 114 user ? user : "", group ? group : ""); 115 116 /* 117 * print device id's for devices, or sizes for other nodes 118 */ 119 if ((arcn->type == PAX_CHR) || (arcn->type == PAX_BLK)) 120 fprintf(fp, "%4lu,%4lu ", (unsigned long)MAJOR(sbp->st_rdev), 121 (unsigned long)MINOR(sbp->st_rdev)); 122 else { 123 fprintf(fp, "%9jd ", (intmax_t)sbp->st_size); 124 } 125 126 /* 127 * print name and link info for hard and soft links 128 */ 129 fprintf(fp, "%s %s", f_date, arcn->name); 130 if ((arcn->type == PAX_HLK) || (arcn->type == PAX_HRG)) 131 fprintf(fp, " == %s\n", arcn->ln_name); 132 else if (arcn->type == PAX_SLK) 133 fprintf(fp, " => %s\n", arcn->ln_name); 134 else 135 putc('\n', fp); 136 fflush(fp); 137 return; 138 } 139 140 /* 141 * tty_ls() 142 * print a short summary of file to tty. 143 */ 144 145 void 146 ls_tty(ARCHD *arcn) 147 { 148 char f_date[DATELEN]; 149 char f_mode[MODELEN]; 150 char *timefrmt; 151 152 if (d_first < 0) 153 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 154 155 if ((arcn->sb.st_mtime + SIXMONTHS) <= time(NULL)) 156 timefrmt = d_first ? OLDFRMTD : OLDFRMTM; 157 else 158 timefrmt = d_first ? CURFRMTD : CURFRMTM; 159 160 /* 161 * convert time to string, and print 162 */ 163 if (strftime(f_date, DATELEN, timefrmt, 164 localtime(&(arcn->sb.st_mtime))) == 0) 165 f_date[0] = '\0'; 166 strmode(arcn->sb.st_mode, f_mode); 167 tty_prnt("%s%s %s\n", f_mode, f_date, arcn->name); 168 return; 169 } 170 171 /* 172 * l_strncpy() 173 * copy src to dest up to len chars (stopping at first '\0'). 174 * when src is shorter than len, pads to len with '\0'. 175 * Return: 176 * number of chars copied. (Note this is a real performance win over 177 * doing a strncpy(), a strlen(), and then a possible memset()) 178 */ 179 180 int 181 l_strncpy(char *dest, const char *src, int len) 182 { 183 char *stop; 184 char *start; 185 186 stop = dest + len; 187 start = dest; 188 while ((dest < stop) && (*src != '\0')) 189 *dest++ = *src++; 190 len = dest - start; 191 while (dest < stop) 192 *dest++ = '\0'; 193 return(len); 194 } 195 196 /* 197 * asc_ul() 198 * convert hex/octal character string into a u_long. We do not have to 199 * check for overflow! (the headers in all supported formats are not large 200 * enough to create an overflow). 201 * NOTE: strings passed to us are NOT TERMINATED. 202 * Return: 203 * unsigned long value 204 */ 205 206 u_long 207 asc_ul(char *str, int len, int base) 208 { 209 char *stop; 210 u_long tval = 0; 211 212 stop = str + len; 213 214 /* 215 * skip over leading blanks and zeros 216 */ 217 while ((str < stop) && ((*str == ' ') || (*str == '0'))) 218 ++str; 219 220 /* 221 * for each valid digit, shift running value (tval) over to next digit 222 * and add next digit 223 */ 224 if (base == HEX) { 225 while (str < stop) { 226 if ((*str >= '0') && (*str <= '9')) 227 tval = (tval << 4) + (*str++ - '0'); 228 else if ((*str >= 'A') && (*str <= 'F')) 229 tval = (tval << 4) + 10 + (*str++ - 'A'); 230 else if ((*str >= 'a') && (*str <= 'f')) 231 tval = (tval << 4) + 10 + (*str++ - 'a'); 232 else 233 break; 234 } 235 } else { 236 while ((str < stop) && (*str >= '0') && (*str <= '7')) 237 tval = (tval << 3) + (*str++ - '0'); 238 } 239 return(tval); 240 } 241 242 /* 243 * ul_asc() 244 * convert an unsigned long into an hex/oct ascii string. pads with LEADING 245 * ascii 0's to fill string completely 246 * NOTE: the string created is NOT TERMINATED. 247 */ 248 249 int 250 ul_asc(u_long val, char *str, int len, int base) 251 { 252 char *pt; 253 u_long digit; 254 255 /* 256 * WARNING str is not '\0' terminated by this routine 257 */ 258 pt = str + len - 1; 259 260 /* 261 * do a tailwise conversion (start at right most end of string to place 262 * least significant digit). Keep shifting until conversion value goes 263 * to zero (all digits were converted) 264 */ 265 if (base == HEX) { 266 while (pt >= str) { 267 if ((digit = (val & 0xf)) < 10) 268 *pt-- = '0' + (char)digit; 269 else 270 *pt-- = 'a' + (char)(digit - 10); 271 if ((val = (val >> 4)) == (u_long)0) 272 break; 273 } 274 } else { 275 while (pt >= str) { 276 *pt-- = '0' + (char)(val & 0x7); 277 if ((val = (val >> 3)) == (u_long)0) 278 break; 279 } 280 } 281 282 /* 283 * pad with leading ascii ZEROS. We return -1 if we ran out of space. 284 */ 285 while (pt >= str) 286 *pt-- = '0'; 287 if (val != (u_long)0) 288 return(-1); 289 return(0); 290 } 291 292 /* 293 * asc_uqd() 294 * convert hex/octal character string into a u_quad_t. We do not have to 295 * check for overflow! (the headers in all supported formats are not large 296 * enough to create an overflow). 297 * NOTE: strings passed to us are NOT TERMINATED. 298 * Return: 299 * u_quad_t value 300 */ 301 302 u_quad_t 303 asc_uqd(char *str, int len, int base) 304 { 305 char *stop; 306 u_quad_t tval = 0; 307 308 stop = str + len; 309 310 /* 311 * skip over leading blanks and zeros 312 */ 313 while ((str < stop) && ((*str == ' ') || (*str == '0'))) 314 ++str; 315 316 /* 317 * for each valid digit, shift running value (tval) over to next digit 318 * and add next digit 319 */ 320 if (base == HEX) { 321 while (str < stop) { 322 if ((*str >= '0') && (*str <= '9')) 323 tval = (tval << 4) + (*str++ - '0'); 324 else if ((*str >= 'A') && (*str <= 'F')) 325 tval = (tval << 4) + 10 + (*str++ - 'A'); 326 else if ((*str >= 'a') && (*str <= 'f')) 327 tval = (tval << 4) + 10 + (*str++ - 'a'); 328 else 329 break; 330 } 331 } else { 332 while ((str < stop) && (*str >= '0') && (*str <= '7')) 333 tval = (tval << 3) + (*str++ - '0'); 334 } 335 return(tval); 336 } 337 338 /* 339 * uqd_asc() 340 * convert an u_quad_t into a hex/oct ascii string. pads with LEADING 341 * ascii 0's to fill string completely 342 * NOTE: the string created is NOT TERMINATED. 343 */ 344 345 int 346 uqd_asc(u_quad_t val, char *str, int len, int base) 347 { 348 char *pt; 349 u_quad_t digit; 350 351 /* 352 * WARNING str is not '\0' terminated by this routine 353 */ 354 pt = str + len - 1; 355 356 /* 357 * do a tailwise conversion (start at right most end of string to place 358 * least significant digit). Keep shifting until conversion value goes 359 * to zero (all digits were converted) 360 */ 361 if (base == HEX) { 362 while (pt >= str) { 363 if ((digit = (val & 0xf)) < 10) 364 *pt-- = '0' + (char)digit; 365 else 366 *pt-- = 'a' + (char)(digit - 10); 367 if ((val = (val >> 4)) == (u_quad_t)0) 368 break; 369 } 370 } else { 371 while (pt >= str) { 372 *pt-- = '0' + (char)(val & 0x7); 373 if ((val = (val >> 3)) == (u_quad_t)0) 374 break; 375 } 376 } 377 378 /* 379 * pad with leading ascii ZEROS. We return -1 if we ran out of space. 380 */ 381 while (pt >= str) 382 *pt-- = '0'; 383 if (val != (u_quad_t)0) 384 return(-1); 385 return(0); 386 } 387