util.c revision 34797
11590Srgrimes/*- 21590Srgrimes * Copyright (c) 1988, 1993, 1994 31590Srgrimes * The Regents of the University of California. All rights reserved. 41590Srgrimes * 51590Srgrimes * Redistribution and use in source and binary forms, with or without 61590Srgrimes * modification, are permitted provided that the following conditions 71590Srgrimes * are met: 81590Srgrimes * 1. Redistributions of source code must retain the above copyright 91590Srgrimes * notice, this list of conditions and the following disclaimer. 101590Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111590Srgrimes * notice, this list of conditions and the following disclaimer in the 121590Srgrimes * documentation and/or other materials provided with the distribution. 131590Srgrimes * 3. All advertising materials mentioning features or use of this software 141590Srgrimes * must display the following acknowledgement: 151590Srgrimes * This product includes software developed by the University of 161590Srgrimes * California, Berkeley and its contributors. 171590Srgrimes * 4. Neither the name of the University nor the names of its contributors 181590Srgrimes * may be used to endorse or promote products derived from this software 191590Srgrimes * without specific prior written permission. 201590Srgrimes * 211590Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221590Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231590Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241590Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251590Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261590Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271590Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281590Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291590Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301590Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311590Srgrimes * SUCH DAMAGE. 321590Srgrimes */ 331590Srgrimes 341590Srgrimes#ifndef lint 3534797Scharnier#if 0 361590Srgrimesstatic char sccsid[] = "@(#)util.c 8.4 (Berkeley) 4/2/94"; 3734797Scharnier#endif 3834797Scharnierstatic const char rcsid[] = 3934797Scharnier "$Id$"; 401590Srgrimes#endif /* not lint */ 411590Srgrimes 421590Srgrimes#include <sys/types.h> 431590Srgrimes 441590Srgrimes#include <ctype.h> 451590Srgrimes#include <pwd.h> 461590Srgrimes#include <stdio.h> 471590Srgrimes#include <stdlib.h> 481590Srgrimes#include <string.h> 491590Srgrimes#include <time.h> 501590Srgrimes#include <unistd.h> 511590Srgrimes 521590Srgrimes#include "chpass.h" 531590Srgrimes#include "pathnames.h" 541590Srgrimes 551590Srgrimesstatic char *months[] = 561590Srgrimes { "January", "February", "March", "April", "May", "June", 571590Srgrimes "July", "August", "September", "October", "November", 581590Srgrimes "December", NULL }; 591590Srgrimes 601590Srgrimeschar * 611590Srgrimesttoa(tval) 621590Srgrimes time_t tval; 631590Srgrimes{ 641590Srgrimes struct tm *tp; 651590Srgrimes static char tbuf[50]; 661590Srgrimes 671590Srgrimes if (tval) { 681590Srgrimes tp = localtime(&tval); 691590Srgrimes (void)sprintf(tbuf, "%s %d, %d", months[tp->tm_mon], 709987Swollman tp->tm_mday, tp->tm_year + 1900); 711590Srgrimes } 721590Srgrimes else 731590Srgrimes *tbuf = '\0'; 741590Srgrimes return (tbuf); 758874Srgrimes} 761590Srgrimes 771590Srgrimesint 781590Srgrimesatot(p, store) 791590Srgrimes char *p; 801590Srgrimes time_t *store; 811590Srgrimes{ 821590Srgrimes static struct tm *lt; 831590Srgrimes char *t, **mp; 841590Srgrimes time_t tval; 851590Srgrimes int day, month, year; 861590Srgrimes 871590Srgrimes if (!*p) { 881590Srgrimes *store = 0; 891590Srgrimes return (0); 901590Srgrimes } 911590Srgrimes if (!lt) { 921590Srgrimes unsetenv("TZ"); 931590Srgrimes (void)time(&tval); 941590Srgrimes lt = localtime(&tval); 951590Srgrimes } 961590Srgrimes if (!(t = strtok(p, " \t"))) 971590Srgrimes goto bad; 9817544Speter if (isdigit(*t)) { 9917544Speter month = atoi(t); 10017544Speter } else { 10117544Speter for (mp = months;; ++mp) { 10217544Speter if (!*mp) 10317544Speter goto bad; 10417544Speter if (!strncasecmp(*mp, t, 3)) { 10517544Speter month = mp - months + 1; 10617544Speter break; 10717544Speter } 1081590Srgrimes } 1091590Srgrimes } 1101590Srgrimes if (!(t = strtok((char *)NULL, " \t,")) || !isdigit(*t)) 1111590Srgrimes goto bad; 1121590Srgrimes day = atoi(t); 1131590Srgrimes if (!(t = strtok((char *)NULL, " \t,")) || !isdigit(*t)) 1141590Srgrimes goto bad; 1151590Srgrimes year = atoi(t); 1161590Srgrimes if (day < 1 || day > 31 || month < 1 || month > 12 || !year) 1171590Srgrimes goto bad; 1181590Srgrimes if (year < 100) 1199987Swollman year += 1900; 1209987Swollman if (year <= 1970) 1211590Srgrimesbad: return (1); 1229987Swollman lt->tm_year = year - 1900; 1239554Smpp lt->tm_mon = month - 1; 1249554Smpp lt->tm_mday = day; 1259554Smpp lt->tm_hour = 0; 1269554Smpp lt->tm_min = 0; 1279554Smpp lt->tm_sec = 0; 1289554Smpp lt->tm_isdst = -1; 1299554Smpp if ((tval = mktime(lt)) < 0) 1309554Smpp return (1); 1311590Srgrimes *store = tval; 1321590Srgrimes return (0); 1331590Srgrimes} 1341590Srgrimes 1351590Srgrimeschar * 1361590Srgrimesok_shell(name) 1371590Srgrimes char *name; 1381590Srgrimes{ 1391590Srgrimes char *p, *sh; 1401590Srgrimes 1411590Srgrimes setusershell(); 14234797Scharnier while ((sh = getusershell())) { 1431590Srgrimes if (!strcmp(name, sh)) 1441590Srgrimes return (name); 1451590Srgrimes /* allow just shell name, but use "real" path */ 1461590Srgrimes if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0) 1471590Srgrimes return (sh); 1481590Srgrimes } 1491590Srgrimes return (NULL); 1501590Srgrimes} 151