1 /*- 2 * Copyright (c) 1988, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 #if 0 36 static char sccsid[] = "@(#)util.c 8.4 (Berkeley) 4/2/94"; 37 #endif 38 static const char rcsid[] = 39 "$FreeBSD: src/usr.bin/chpass/util.c,v 1.8.2.1 2002/03/21 10:33:01 cjc Exp $"; 40 #endif /* not lint */ 41 42 #include <sys/types.h> 43 44 #include <ctype.h> 45 #include <pwd.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include <string.h> 49 #include <time.h> 50 #include <unistd.h> 51 52 #include "chpass.h" 53 #include "pathnames.h" 54 55 static char *months[] = 56 { "January", "February", "March", "April", "May", "June", 57 "July", "August", "September", "October", "November", 58 "December", NULL }; 59 60 char * 61 ttoa(tval) 62 time_t tval; 63 { 64 struct tm *tp; 65 static char tbuf[50]; 66 67 if (tval) { 68 tp = localtime(&tval); 69 (void)sprintf(tbuf, "%s %d, %d", months[tp->tm_mon], 70 tp->tm_mday, tp->tm_year + 1900); 71 } 72 else 73 *tbuf = '\0'; 74 return (tbuf); 75 } 76 77 int 78 atot(p, store) 79 char *p; 80 time_t *store; 81 { 82 static struct tm *lt; 83 char *t, **mp; 84 time_t tval; 85 int day, month, year; 86 87 if (!*p) { 88 *store = 0; 89 return (0); 90 } 91 if (!lt) { 92 unsetenv("TZ"); 93 (void)time(&tval); 94 lt = localtime(&tval); 95 } 96 if (!(t = strtok(p, " \t"))) 97 goto bad; 98 if (isdigit(*t)) { 99 month = atoi(t); 100 } else { 101 for (mp = months;; ++mp) { 102 if (!*mp) 103 goto bad; 104 if (!strncasecmp(*mp, t, 3)) { 105 month = mp - months + 1; 106 break; 107 } 108 } 109 } 110 if (!(t = strtok((char *)NULL, " \t,")) || !isdigit(*t)) 111 goto bad; 112 day = atoi(t); 113 if (!(t = strtok((char *)NULL, " \t,")) || !isdigit(*t)) 114 goto bad; 115 year = atoi(t); 116 if (day < 1 || day > 31 || month < 1 || month > 12) 117 goto bad; 118 /* Allow two digit years 1969-2068 */ 119 if (year < 69) 120 year += 2000; 121 else if (year < 100) 122 year += 1900; 123 if (year < 1969) 124 bad: return (1); 125 lt->tm_year = year - 1900; 126 lt->tm_mon = month - 1; 127 lt->tm_mday = day; 128 lt->tm_hour = 0; 129 lt->tm_min = 0; 130 lt->tm_sec = 0; 131 lt->tm_isdst = -1; 132 if ((tval = mktime(lt)) < 0) 133 return (1); 134 *store = tval; 135 return (0); 136 } 137 138 char * 139 ok_shell(name) 140 char *name; 141 { 142 char *p, *sh; 143 144 setusershell(); 145 while ((sh = getusershell())) { 146 if (!strcmp(name, sh)) 147 return (name); 148 /* allow just shell name, but use "real" path */ 149 if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0) 150 return (sh); 151 } 152 return (NULL); 153 } 154