| 1 | /*- |
| 2 | * Copyright (c) 1988 The Regents of the University of California. |
| 3 | * 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 | static char sccsid[] = "@(#)util.c 5.14 (Berkeley) 2/12/91"; |
| 36 | #endif /* not lint */ |
| 37 | |
| 38 | #include <sys/types.h> |
| 39 | #include <sys/time.h> |
| 40 | #include <tzfile.h> |
| 41 | #include <pwd.h> |
| 42 | #include <stdio.h> |
| 43 | #include <string.h> |
| 44 | #include <ctype.h> |
| 45 | #include "chpass.h" |
| 46 | #include "pathnames.h" |
| 47 | |
| 48 | static int dmsize[] = |
| 49 | { -1, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; |
| 50 | static char *months[] = |
| 51 | { "January", "February", "March", "April", "May", "June", |
| 52 | "July", "August", "September", "October", "November", |
| 53 | "December", NULL }; |
| 54 | char * |
| 55 | ttoa(tval) |
| 56 | time_t tval; |
| 57 | { |
| 58 | struct tm *tp; |
| 59 | static char tbuf[50]; |
| 60 | |
| 61 | if (tval) { |
| 62 | tp = localtime(&tval); |
| 63 | (void)sprintf(tbuf, "%s %d, 19%d", months[tp->tm_mon], |
| 64 | tp->tm_mday, tp->tm_year); |
| 65 | } |
| 66 | else |
| 67 | *tbuf = '\0'; |
| 68 | return(tbuf); |
| 69 | } |
| 70 | |
| 71 | atot(p, store) |
| 72 | char *p; |
| 73 | time_t *store; |
| 74 | { |
| 75 | register char *t, **mp; |
| 76 | static struct tm *lt; |
| 77 | time_t tval, time(); |
| 78 | int day, month, year; |
| 79 | |
| 80 | if (!*p) { |
| 81 | *store = 0; |
| 82 | return(0); |
| 83 | } |
| 84 | if (!lt) { |
| 85 | unsetenv("TZ"); |
| 86 | (void)time(&tval); |
| 87 | lt = localtime(&tval); |
| 88 | } |
| 89 | if (!(t = strtok(p, " \t"))) |
| 90 | goto bad; |
| 91 | for (mp = months;; ++mp) { |
| 92 | if (!*mp) |
| 93 | goto bad; |
| 94 | if (!strncasecmp(*mp, t, 3)) { |
| 95 | month = mp - months + 1; |
| 96 | break; |
| 97 | } |
| 98 | } |
| 99 | if (!(t = strtok((char *)NULL, " \t,")) || !isdigit(*t)) |
| 100 | goto bad; |
| 101 | day = atoi(t); |
| 102 | if (!(t = strtok((char *)NULL, " \t,")) || !isdigit(*t)) |
| 103 | goto bad; |
| 104 | year = atoi(t); |
| 105 | if (day < 1 || day > 31 || month < 1 || month > 12 || !year) |
| 106 | goto bad; |
| 107 | if (year < 100) |
| 108 | year += TM_YEAR_BASE; |
| 109 | if (year <= EPOCH_YEAR) |
| 110 | bad: return(1); |
| 111 | tval = isleap(year) && month > 2; |
| 112 | for (--year; year >= EPOCH_YEAR; --year) |
| 113 | tval += isleap(year) ? |
| 114 | DAYSPERLYEAR : DAYSPERNYEAR; |
| 115 | while (--month) |
| 116 | tval += dmsize[month]; |
| 117 | tval += day; |
| 118 | tval = tval * HOURSPERDAY * MINSPERHOUR * SECSPERMIN; |
| 119 | tval -= lt->tm_gmtoff; |
| 120 | *store = tval; |
| 121 | return(0); |
| 122 | } |
| 123 | |
| 124 | char * |
| 125 | ok_shell(name) |
| 126 | register char *name; |
| 127 | { |
| 128 | register char *p, *sh; |
| 129 | char *getusershell(); |
| 130 | |
| 131 | setusershell(); |
| 132 | while (sh = getusershell()) { |
| 133 | if (!strcmp(name, sh)) |
| 134 | return(name); |
| 135 | /* allow just shell name, but use "real" path */ |
| 136 | if ((p = rindex(sh, '/')) && !strcmp(name, p + 1)) |
| 137 | return(sh); |
| 138 | } |
| 139 | return(NULL); |
| 140 | } |