/* $OpenBSD: gen_subs.c,v 1.19 2007/04/04 21:55:10 millert 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. */ #ifndef lint #if 0 static const char sccsid[] = "@(#)gen_subs.c 8.1 (Berkeley) 5/31/93"; #else static const char rcsid[] = "$OpenBSD: gen_subs.c,v 1.19 2007/04/04 21:55:10 millert Exp $"; #endif #endif /* not lint */ #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" #define NAME_WIDTH 8 /* * 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 *timefrmt; 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); if (ltmfrmt == NULL) { /* * no locale specified format. time format based on age * compared to the time pax was started. */ if ((sbp->st_mtime + SIXMONTHS) <= now) timefrmt = OLDFRMT; else timefrmt = CURFRMT; } else timefrmt = ltmfrmt; /* * print file mode, link count, uid, gid and time */ if (strftime(f_date,DATELEN,timefrmt,localtime(&(sbp->st_mtime))) == 0) f_date[0] = '\0'; (void)fprintf(fp, "%s%2u %-*.*s %-*.*s ", f_mode, sbp->st_nlink, NAME_WIDTH, UT_NAMESIZE, name_uid(sbp->st_uid, 1), NAME_WIDTH, UT_NAMESIZE, name_gid(sbp->st_gid, 1)); /* * print device id's for devices, or sizes for other nodes */ if ((arcn->type == PAX_CHR) || (arcn->type == PAX_BLK)) # ifdef LONG_OFF_T (void)fprintf(fp, "%4u,%4u ", MAJOR(sbp->st_rdev), # else (void)fprintf(fp, "%4lu,%4lu ", (unsigned long)MAJOR(sbp->st_rdev), # endif (unsigned long)MINOR(sbp->st_rdev)); else { # ifdef LONG_OFF_T (void)fprintf(fp, "%9lu ", sbp->st_size); # else (void)fprintf(fp, "%9qu ", sbp->st_size); # endif } /* * print name and link info for hard and soft links */ (void)fputs(f_date, fp); (void)putc(' ', fp); safe_print(arcn->name, fp); if ((arcn->type == PAX_HLK) || (arcn->type == PAX_HRG)) { 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); return; } /* * tty_ls() * print a short summary of file to tty. */ void ls_tty(ARCHD *arcn) { char f_date[DATELEN]; char f_mode[MODELEN]; const char *timefrmt; if (ltmfrmt == NULL) { /* * no locale specified format */ if ((arcn->sb.st_mtime + SIXMONTHS) <= time(NULL)) timefrmt = OLDFRMT; else timefrmt = CURFRMT; } else timefrmt = ltmfrmt; /* * convert time to string, and print */ if (strftime(f_date, DATELEN, timefrmt, 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); 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_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); if ((val = (val >> 4)) == (u_long)0) break; } } else { while (pt >= str) { *pt-- = '0' + (char)(val & 0x7); if ((val = (val >> 3)) == (u_long)0) break; } } /* * pad with leading ascii ZEROS. We return -1 if we ran out of space. */ while (pt >= str) *pt-- = '0'; if (val != (u_long)0) return(-1); return(0); } #ifndef LONG_OFF_T /* * asc_uqd() * convert hex/octal character string into a u_quad_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: * u_quad_t value */ u_quad_t asc_uqd(char *str, int len, int base) { char *stop; u_quad_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); } /* * uqd_asc() * convert an u_quad_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 uqd_asc(u_quad_t val, char *str, int len, int base) { char *pt; u_quad_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)) == (u_quad_t)0) break; } } else { while (pt >= str) { *pt-- = '0' + (char)(val & 0x7); if ((val = (val >> 3)) == (u_quad_t)0) break; } } /* * pad with leading ascii ZEROS. We return -1 if we ran out of space. */ while (pt >= str) *pt-- = '0'; if (val != (u_quad_t)0) return(-1); return(0); } #endif /* * 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); }