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Diffstat (limited to 'bin/pax/gen_subs.c')
| -rw-r--r-- | bin/pax/gen_subs.c | 401 |
1 files changed, 401 insertions, 0 deletions
diff --git a/bin/pax/gen_subs.c b/bin/pax/gen_subs.c new file mode 100644 index 0000000..7eb8200 --- /dev/null +++ b/bin/pax/gen_subs.c @@ -0,0 +1,401 @@ +/* $OpenBSD: gen_subs.c,v 1.32 2016/08/26 05:06:14 guenther Exp $ */ +/* $NetBSD: gen_subs.c,v 1.5 1995/03/21 09:07:26 cgd 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. + */ + +#include <sys/types.h> +#include <sys/stat.h> +#include <grp.h> +#include <pwd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <unistd.h> +#include <utmp.h> +#include <vis.h> +#ifndef major +#include <sys/sysmacros.h> +#endif + +#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 SECSPERDAY (24 * 60 * 60) +#define SIXMONTHS (SECSPERDAY * 365 / 2) +#define CURFRMT "%b %e %H:%M" +#define OLDFRMT "%b %e %Y" +#define NAME_WIDTH 8 +#define TIMEFMT(t, now) \ + (((t) + SIXMONTHS <= (now) || (t) > (now)) ? OLDFRMT : CURFRMT) + +/* + * 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]; + int term; + + term = zeroflag ? '\0' : '\n'; /* path termination character */ + + /* + * if not verbose, just print the file name + */ + if (!vflag) { + if (zeroflag) + (void)fputs(arcn->name, fp); + else + safe_print(arcn->name, fp); + (void)putc(term, fp); + (void)fflush(fp); + return; + } + + /* + * user wants long mode + */ + sbp = &(arcn->sb); + strmode(sbp->st_mode, f_mode); + + /* + * print file mode, link count, uid, gid and time + */ + if (strftime(f_date, sizeof(f_date), TIMEFMT(sbp->st_mtime, now), + localtime(&(sbp->st_mtime))) == 0) + f_date[0] = '\0'; + (void)fprintf(fp, "%s%2u %-*.*s %-*.*s ", f_mode, (unsigned)sbp->st_nlink, + NAME_WIDTH, UT_NAMESIZE, user_from_uid(sbp->st_uid, 0), + NAME_WIDTH, UT_NAMESIZE, group_from_gid(sbp->st_gid, 0)); + + /* + * 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 ", + (unsigned long)MAJOR(sbp->st_rdev), + (unsigned long)MINOR(sbp->st_rdev)); + else { + (void)fprintf(fp, "%9zu ", sbp->st_size); + } + + /* + * print name and link info for hard and soft links + */ + (void)fputs(f_date, fp); + (void)putc(' ', fp); + safe_print(arcn->name, fp); + if (PAX_IS_HARDLINK(arcn->type)) { + fputs(" == ", fp); + safe_print(arcn->ln_name, fp); + } else if (arcn->type == PAX_SLK) { + fputs(" -> ", fp); + safe_print(arcn->ln_name, fp); + } + (void)putc(term, 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]; + time_t now = time(NULL); + + /* + * convert time to string, and print + */ + if (strftime(f_date, DATELEN, TIMEFMT(arcn->sb.st_mtime, now), + localtime(&(arcn->sb.st_mtime))) == 0) + f_date[0] = '\0'; + strmode(arcn->sb.st_mode, f_mode); + tty_prnt("%s%s %s\n", f_mode, f_date, arcn->name); +} + +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_ul() + * convert hex/octal character string into a u_long. 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: + * unsigned long value + */ + +u_long +asc_ul(char *str, int len, int base) +{ + char *stop; + u_long 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); +} + +/* + * ul_asc() + * convert an unsigned long into an hex/oct ascii string. pads with LEADING + * ascii 0's to fill string completely + * NOTE: the string created is NOT TERMINATED. + */ + +int +ul_asc(u_long val, char *str, int len, int base) +{ + char *pt; + u_long 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); + val >>= 4; + if (val == 0) + break; + } + } else { + while (pt >= str) { + *pt-- = '0' + (char)(val & 0x7); + val >>= 3; + if (val == 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_ull() + * Convert hex/octal character string into a unsigned long long. + * 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: + * unsigned long long value + */ + +unsigned long long +asc_ull(char *str, int len, int base) +{ + char *stop; + unsigned long long 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); +} + +/* + * ull_asc() + * Convert an unsigned long long into a hex/oct ascii string. + * Pads with LEADING ascii 0's to fill string completely + * NOTE: the string created is NOT TERMINATED. + */ + +int +ull_asc(unsigned long long val, char *str, int len, int base) +{ + char *pt; + unsigned long long 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); + val >>= 4; + if (val == 0) + break; + } + } else { + while (pt >= str) { + *pt-- = '0' + (char)(val & 0x7); + val >>= 3; + if (val == 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); +} + +/* + * Copy at max min(bufz, fieldsz) chars from field to buf, stopping + * at the first NUL char. NUL terminate buf if there is room left. + */ +size_t +fieldcpy(char *buf, size_t bufsz, const char *field, size_t fieldsz) +{ + char *p = buf; + const char *q = field; + size_t i = 0; + + if (fieldsz > bufsz) + fieldsz = bufsz; + while (i < fieldsz && *q != '\0') { + *p++ = *q++; + i++; + } + if (i < bufsz) + *p = '\0'; + return(i); +} |