1/* $OpenBSD: gen_subs.c,v 1.19 2007/04/04 21:55:10 millert 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. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37#include <sys/cdefs.h> 38#ifndef lint 39#if 0 40static const char sccsid[] = "@(#)gen_subs.c 8.1 (Berkeley) 5/31/93"; 41#else 42__used static const char rcsid[] = "$OpenBSD: gen_subs.c,v 1.19 2007/04/04 21:55:10 millert Exp $"; 43#endif 44#endif /* not lint */ 45 46#include <sys/types.h> 47#include <sys/time.h> 48#include <sys/stat.h> 49#include <sys/param.h> 50#include <stdio.h> 51#include <tzfile.h> 52#include <unistd.h> 53#include <stdlib.h> 54#include <string.h> 55#include <vis.h> 56#include <langinfo.h> 57#include "pax.h" 58#include "extern.h" 59 60/* 61 * a collection of general purpose subroutines used by pax 62 */ 63 64/* 65 * constants used by ls_list() when printing out archive members 66 */ 67#define MODELEN 20 68#define DATELEN 64 69#define SIXMONTHS ((DAYSPERNYEAR / 2) * SECSPERDAY) 70#define CURFRMTM "%b %e %H:%M" 71#define OLDFRMTM "%b %e %Y" 72#define CURFRMTD "%e %b %H:%M" 73#define OLDFRMTD "%e %b %Y" 74#define NAME_WIDTH 8 75 76static int d_first = -1; 77 78/* 79 * ls_list() 80 * list the members of an archive in ls format 81 */ 82 83void 84ls_list(ARCHD *arcn, time_t now, FILE *fp) 85{ 86 struct stat *sbp; 87 char f_mode[MODELEN]; 88 char f_date[DATELEN]; 89 const char *timefrmt; 90 int term; 91 92 term = zeroflag ? '\0' : '\n'; /* path termination character */ 93 94 /* 95 * if not verbose, just print the file name 96 */ 97 if (!vflag) { 98 if (zeroflag) 99 (void)fputs(arcn->name, fp); 100 else 101 safe_print(arcn->name, fp); 102 (void)putc(term, fp); 103 (void)fflush(fp); 104 return; 105 } 106 107 if (pax_list_opt_format) { 108 pax_format_list_output(arcn, now, fp, term); 109 return; 110 } 111 112 if (d_first < 0) 113 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 114 /* 115 * user wants long mode 116 */ 117 sbp = &(arcn->sb); 118 strmode(sbp->st_mode, f_mode); 119 120 /* 121 * time format based on age compared to the time pax was started. 122 */ 123 if ((sbp->st_mtime + SIXMONTHS) <= now || 124 sbp->st_mtime > now) 125 timefrmt = d_first ? OLDFRMTD : OLDFRMTM; 126 else 127 timefrmt = d_first ? CURFRMTD : CURFRMTM; 128 129 /* 130 * print file mode, link count, uid, gid and time 131 */ 132 if (strftime(f_date,DATELEN,timefrmt,localtime(&(sbp->st_mtime))) == 0) 133 f_date[0] = '\0'; 134#define UT_NAMESIZE 8 135 (void)fprintf(fp, "%s%2u %-*.*s %-*.*s ", f_mode, sbp->st_nlink, 136 NAME_WIDTH, UT_NAMESIZE, name_uid(sbp->st_uid, 1), 137 NAME_WIDTH, UT_NAMESIZE, name_gid(sbp->st_gid, 1)); 138 139 /* 140 * print device id's for devices, or sizes for other nodes 141 */ 142 if ((arcn->type == PAX_CHR) || (arcn->type == PAX_BLK)) 143# ifdef LONG_OFF_T 144 (void)fprintf(fp, "%4u,%4u ", MAJOR(sbp->st_rdev), 145# else 146 (void)fprintf(fp, "%4lu,%4lu ", (unsigned long)MAJOR(sbp->st_rdev), 147# endif 148 (unsigned long)MINOR(sbp->st_rdev)); 149 else { 150# ifdef LONG_OFF_T 151 (void)fprintf(fp, "%9lu ", sbp->st_size); 152# else 153 (void)fprintf(fp, "%9qu ", sbp->st_size); 154# endif 155 } 156 157 /* 158 * print name and link info for hard and soft links 159 */ 160 (void)fputs(f_date, fp); 161 (void)putc(' ', fp); 162 safe_print(arcn->name, fp); 163 if ((arcn->type == PAX_HLK) || (arcn->type == PAX_HRG)) { 164 fputs(" == ", fp); 165 safe_print(arcn->ln_name, fp); 166 } else if (arcn->type == PAX_SLK) { 167 fputs(" -> ", fp); 168 safe_print(arcn->ln_name, fp); 169 } 170 (void)putc(term, fp); 171 (void)fflush(fp); 172 return; 173} 174 175/* 176 * tty_ls() 177 * print a short summary of file to tty. 178 */ 179 180void 181ls_tty(ARCHD *arcn) 182{ 183 char f_date[DATELEN]; 184 char f_mode[MODELEN]; 185 const char *timefrmt; 186 187 if (d_first < 0) 188 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 189 190 if ((arcn->sb.st_mtime + SIXMONTHS) <= time(NULL)) 191 timefrmt = d_first ? OLDFRMTD : OLDFRMTM; 192 else 193 timefrmt = d_first ? CURFRMTD : CURFRMTM; 194 195 /* 196 * convert time to string, and print 197 */ 198 if (strftime(f_date, DATELEN, timefrmt, 199 localtime(&(arcn->sb.st_mtime))) == 0) 200 f_date[0] = '\0'; 201 strmode(arcn->sb.st_mode, f_mode); 202 tty_prnt("%s%s %s\n", f_mode, f_date, arcn->name); 203 return; 204} 205 206void 207safe_print(const char *str, FILE *fp) 208{ 209 char visbuf[5]; 210 const char *cp; 211 212 /* 213 * if printing to a tty, use vis(3) to print special characters. 214 */ 215 if (isatty(fileno(fp))) { 216 for (cp = str; *cp; cp++) { 217 (void)vis(visbuf, cp[0], VIS_CSTYLE, cp[1]); 218 (void)fputs(visbuf, fp); 219 } 220 } else { 221 (void)fputs(str, fp); 222 } 223} 224 225/* 226 * asc_ul() 227 * convert hex/octal character string into a u_long. We do not have to 228 * check for overflow! (the headers in all supported formats are not large 229 * enough to create an overflow). 230 * NOTE: strings passed to us are NOT TERMINATED. 231 * Return: 232 * unsigned long value 233 */ 234 235u_long 236asc_ul(char *str, int len, int base) 237{ 238 char *stop; 239 u_long tval = 0; 240 241 stop = str + len; 242 243 /* 244 * skip over leading blanks and zeros 245 */ 246 while ((str < stop) && ((*str == ' ') || (*str == '0'))) 247 ++str; 248 249 /* 250 * for each valid digit, shift running value (tval) over to next digit 251 * and add next digit 252 */ 253 if (base == HEX) { 254 while (str < stop) { 255 if ((*str >= '0') && (*str <= '9')) 256 tval = (tval << 4) + (*str++ - '0'); 257 else if ((*str >= 'A') && (*str <= 'F')) 258 tval = (tval << 4) + 10 + (*str++ - 'A'); 259 else if ((*str >= 'a') && (*str <= 'f')) 260 tval = (tval << 4) + 10 + (*str++ - 'a'); 261 else 262 break; 263 } 264 } else { 265 while ((str < stop) && (*str >= '0') && (*str <= '7')) 266 tval = (tval << 3) + (*str++ - '0'); 267 } 268 return(tval); 269} 270 271/* 272 * ul_asc() 273 * convert an unsigned long into an hex/oct ascii string. pads with LEADING 274 * ascii 0's to fill string completely 275 * NOTE: the string created is NOT TERMINATED. 276 */ 277 278int 279ul_asc(u_long val, char *str, int len, int base) 280{ 281 char *pt; 282 u_long digit; 283 284 /* 285 * WARNING str is not '\0' terminated by this routine 286 */ 287 pt = str + len - 1; 288 289 /* 290 * do a tailwise conversion (start at right most end of string to place 291 * least significant digit). Keep shifting until conversion value goes 292 * to zero (all digits were converted) 293 */ 294 if (base == HEX) { 295 while (pt >= str) { 296 if ((digit = (val & 0xf)) < 10) 297 *pt-- = '0' + (char)digit; 298 else 299 *pt-- = 'a' + (char)(digit - 10); 300 if ((val = (val >> 4)) == (u_long)0) 301 break; 302 } 303 } else { 304 while (pt >= str) { 305 *pt-- = '0' + (char)(val & 0x7); 306 if ((val = (val >> 3)) == (u_long)0) 307 break; 308 } 309 } 310 311 /* 312 * pad with leading ascii ZEROS. We return -1 if we ran out of space. 313 */ 314 while (pt >= str) 315 *pt-- = '0'; 316 if (val != (u_long)0) 317 return(-1); 318 return(0); 319} 320 321#ifndef LONG_OFF_T 322/* 323 * asc_uqd() 324 * convert hex/octal character string into a u_quad_t. We do not have to 325 * check for overflow! (the headers in all supported formats are not large 326 * enough to create an overflow). 327 * NOTE: strings passed to us are NOT TERMINATED. 328 * Return: 329 * u_quad_t value 330 */ 331 332u_quad_t 333asc_uqd(char *str, int len, int base) 334{ 335 char *stop; 336 u_quad_t tval = 0; 337 338 stop = str + len; 339 340 /* 341 * skip over leading blanks and zeros 342 */ 343 while ((str < stop) && ((*str == ' ') || (*str == '0'))) 344 ++str; 345 346 /* 347 * for each valid digit, shift running value (tval) over to next digit 348 * and add next digit 349 */ 350 if (base == HEX) { 351 while (str < stop) { 352 if ((*str >= '0') && (*str <= '9')) 353 tval = (tval << 4) + (*str++ - '0'); 354 else if ((*str >= 'A') && (*str <= 'F')) 355 tval = (tval << 4) + 10 + (*str++ - 'A'); 356 else if ((*str >= 'a') && (*str <= 'f')) 357 tval = (tval << 4) + 10 + (*str++ - 'a'); 358 else 359 break; 360 } 361 } else { 362 while ((str < stop) && (*str >= '0') && (*str <= '7')) 363 tval = (tval << 3) + (*str++ - '0'); 364 } 365 return(tval); 366} 367 368/* 369 * uqd_asc() 370 * convert an u_quad_t into a hex/oct ascii string. pads with LEADING 371 * ascii 0's to fill string completely 372 * NOTE: the string created is NOT TERMINATED. 373 */ 374 375int 376uqd_asc(u_quad_t val, char *str, int len, int base) 377{ 378 char *pt; 379 u_quad_t digit; 380 381 /* 382 * WARNING str is not '\0' terminated by this routine 383 */ 384 pt = str + len - 1; 385 386 /* 387 * do a tailwise conversion (start at right most end of string to place 388 * least significant digit). Keep shifting until conversion value goes 389 * to zero (all digits were converted) 390 */ 391 if (base == HEX) { 392 while (pt >= str) { 393 if ((digit = (val & 0xf)) < 10) 394 *pt-- = '0' + (char)digit; 395 else 396 *pt-- = 'a' + (char)(digit - 10); 397 if ((val = (val >> 4)) == (u_quad_t)0) 398 break; 399 } 400 } else { 401 while (pt >= str) { 402 *pt-- = '0' + (char)(val & 0x7); 403 if ((val = (val >> 3)) == (u_quad_t)0) 404 break; 405 } 406 } 407 408 /* 409 * pad with leading ascii ZEROS. We return -1 if we ran out of space. 410 */ 411 while (pt >= str) 412 *pt-- = '0'; 413 if (val != (u_quad_t)0) 414 return(-1); 415 return(0); 416} 417#endif 418 419/* 420 * Copy at max min(bufz, fieldsz) chars from field to buf, stopping 421 * at the first NUL char. NUL terminate buf if there is room left. 422 */ 423size_t 424fieldcpy(char *buf, size_t bufsz, const char *field, size_t fieldsz) 425{ 426 char *p = buf; 427 const char *q = field; 428 size_t i = 0; 429 430 if (fieldsz > bufsz) 431 fieldsz = bufsz; 432 while (i < fieldsz && *q != '\0') { 433 *p++ = *q++; 434 i++; 435 } 436 if (i < bufsz) 437 *p = '\0'; 438 return(i); 439} 440