/* $NetBSD: gen_subs.c,v 1.36 2012/08/09 08:09:21 christos Exp $ */ /*- * Copyright (c) 1992 Keith Muller. * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Keith Muller of the University of California, San Diego. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #if HAVE_NBTOOL_CONFIG_H #include "nbtool_config.h" #endif #include #if !defined(lint) #if 0 static char sccsid[] = "@(#)gen_subs.c 8.1 (Berkeley) 5/31/93"; #else __RCSID("$NetBSD: gen_subs.c,v 1.36 2012/08/09 08:09:21 christos Exp $"); #endif #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "pax.h" #include "extern.h" /* * a collection of general purpose subroutines used by pax */ /* * constants used by ls_list() when printing out archive members */ #define MODELEN 20 #define DATELEN 64 #define SIXMONTHS ((DAYSPERNYEAR / 2) * SECSPERDAY) #define CURFRMT "%b %e %H:%M" #define OLDFRMT "%b %e %Y" #ifndef UT_NAMESIZE #define UT_NAMESIZE 8 #endif #define UT_GRPSIZE 6 /* * convert time to string */ static void formattime(char *buf, size_t buflen, time_t when) { int error; struct tm tm; (void)localtime_r(&when, &tm); if (when + SIXMONTHS <= time(NULL)) error = strftime(buf, buflen, OLDFRMT, &tm); else error = strftime(buf, buflen, CURFRMT, &tm); if (error == 0) buf[0] = '\0'; } /* * ls_list() * list the members of an archive in ls format */ void ls_list(ARCHD *arcn, time_t now, FILE *fp) { struct stat *sbp; char f_mode[MODELEN]; char f_date[DATELEN]; const char *user, *group; /* * if not verbose, just print the file name */ if (!vflag) { (void)fprintf(fp, "%s\n", arcn->name); (void)fflush(fp); return; } /* * user wants long mode */ sbp = &(arcn->sb); strmode(sbp->st_mode, f_mode); /* * time format based on age compared to the time pax was started. */ formattime(f_date, sizeof(f_date), arcn->sb.st_mtime); /* * print file mode, link count, uid, gid and time */ user = user_from_uid(sbp->st_uid, 0); group = group_from_gid(sbp->st_gid, 0); (void)fprintf(fp, "%s%2lu %-*s %-*s ", f_mode, (unsigned long)sbp->st_nlink, UT_NAMESIZE, user ? user : "", UT_GRPSIZE, group ? group : ""); /* * print device id's for devices, or sizes for other nodes */ if ((arcn->type == PAX_CHR) || (arcn->type == PAX_BLK)) (void)fprintf(fp, "%4lu,%4lu ", (long) MAJOR(sbp->st_rdev), (long) MINOR(sbp->st_rdev)); else { (void)fprintf(fp, OFFT_FP("9") " ", (OFFT_T)sbp->st_size); } /* * print name and link info for hard and soft links */ (void)fprintf(fp, "%s %s", f_date, arcn->name); if ((arcn->type == PAX_HLK) || (arcn->type == PAX_HRG)) (void)fprintf(fp, " == %s\n", arcn->ln_name); else if (arcn->type == PAX_SLK) (void)fprintf(fp, " -> %s\n", arcn->ln_name); else (void)fputc('\n', fp); (void)fflush(fp); } /* * tty_ls() * print a short summary of file to tty. */ void ls_tty(ARCHD *arcn) { char f_date[DATELEN]; char f_mode[MODELEN]; formattime(f_date, sizeof(f_date), arcn->sb.st_mtime); strmode(arcn->sb.st_mode, f_mode); tty_prnt("%s%s %s\n", f_mode, f_date, arcn->name); return; } void safe_print(const char *str, FILE *fp) { char visbuf[5]; const char *cp; /* * if printing to a tty, use vis(3) to print special characters. */ if (isatty(fileno(fp))) { for (cp = str; *cp; cp++) { (void)vis(visbuf, cp[0], VIS_CSTYLE, cp[1]); (void)fputs(visbuf, fp); } } else { (void)fputs(str, fp); } } /* * asc_u32() * convert hex/octal character string into a uint32_t. We do not have to * check for overflow! (the headers in all supported formats are not large * enough to create an overflow). * NOTE: strings passed to us are NOT TERMINATED. * Return: * uint32_t value */ uint32_t asc_u32(char *str, int len, int base) { char *stop; uint32_t tval = 0; stop = str + len; /* * skip over leading blanks and zeros */ while ((str < stop) && ((*str == ' ') || (*str == '0'))) ++str; /* * for each valid digit, shift running value (tval) over to next digit * and add next digit */ if (base == HEX) { while (str < stop) { if ((*str >= '0') && (*str <= '9')) tval = (tval << 4) + (*str++ - '0'); else if ((*str >= 'A') && (*str <= 'F')) tval = (tval << 4) + 10 + (*str++ - 'A'); else if ((*str >= 'a') && (*str <= 'f')) tval = (tval << 4) + 10 + (*str++ - 'a'); else break; } } else { while ((str < stop) && (*str >= '0') && (*str <= '7')) tval = (tval << 3) + (*str++ - '0'); } return tval; } /* * u32_asc() * convert an uintmax_t into an hex/oct ascii string. pads with LEADING * ascii 0's to fill string completely * NOTE: the string created is NOT TERMINATED. */ int u32_asc(uintmax_t val, char *str, int len, int base) { char *pt; uint32_t digit; uintmax_t p; p = val & TOP_HALF; if (p && p != TOP_HALF) return -1; val &= BOTTOM_HALF; /* * WARNING str is not '\0' terminated by this routine */ pt = str + len - 1; /* * do a tailwise conversion (start at right most end of string to place * least significant digit). Keep shifting until conversion value goes * to zero (all digits were converted) */ if (base == HEX) { while (pt >= str) { if ((digit = (val & 0xf)) < 10) *pt-- = '0' + (char)digit; else *pt-- = 'a' + (char)(digit - 10); if ((val = (val >> 4)) == (u_long)0) break; } } else { while (pt >= str) { *pt-- = '0' + (char)(val & 0x7); if ((val = (val >> 3)) == 0) break; } } /* * pad with leading ascii ZEROS. We return -1 if we ran out of space. */ while (pt >= str) *pt-- = '0'; if (val != 0) return -1; return 0; } /* * asc_umax() * convert hex/octal character string into a uintmax. We do * not have to to check for overflow! (the headers in all supported * formats are not large enough to create an overflow). * NOTE: strings passed to us are NOT TERMINATED. * Return: * uintmax_t value */ uintmax_t asc_umax(char *str, int len, int base) { char *stop; uintmax_t tval = 0; stop = str + len; /* * skip over leading blanks and zeros */ while ((str < stop) && ((*str == ' ') || (*str == '0'))) ++str; /* * for each valid digit, shift running value (tval) over to next digit * and add next digit */ if (base == HEX) { while (str < stop) { if ((*str >= '0') && (*str <= '9')) tval = (tval << 4) + (*str++ - '0'); else if ((*str >= 'A') && (*str <= 'F')) tval = (tval << 4) + 10 + (*str++ - 'A'); else if ((*str >= 'a') && (*str <= 'f')) tval = (tval << 4) + 10 + (*str++ - 'a'); else break; } } else { while ((str < stop) && (*str >= '0') && (*str <= '7')) tval = (tval << 3) + (*str++ - '0'); } return tval; } /* * umax_asc() * convert an uintmax_t into a hex/oct ascii string. pads with * LEADING ascii 0's to fill string completely * NOTE: the string created is NOT TERMINATED. */ int umax_asc(uintmax_t val, char *str, int len, int base) { char *pt; uintmax_t digit; /* * WARNING str is not '\0' terminated by this routine */ pt = str + len - 1; /* * do a tailwise conversion (start at right most end of string to place * least significant digit). Keep shifting until conversion value goes * to zero (all digits were converted) */ if (base == HEX) { while (pt >= str) { if ((digit = (val & 0xf)) < 10) *pt-- = '0' + (char)digit; else *pt-- = 'a' + (char)(digit - 10); if ((val = (val >> 4)) == 0) break; } } else { while (pt >= str) { *pt-- = '0' + (char)(val & 0x7); if ((val = (val >> 3)) == 0) break; } } /* * pad with leading ascii ZEROS. We return -1 if we ran out of space. */ while (pt >= str) *pt-- = '0'; if (val != 0) return -1; return 0; } int check_Aflag(void) { if (Aflag > 0) return 1; if (Aflag == 0) { Aflag = -1; tty_warn(0, "Removing leading / from absolute path names in the archive"); } return 0; }