1 /* $OpenBSD: util.c,v 1.4 1998/03/30 06:59:34 deraadt Exp $ */ 2 /* $NetBSD: util.c,v 1.4 1995/03/26 04:55:35 glass Exp $ */ 3 4 /*- 5 * Copyright (c) 1988, 1993, 1994 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)util.c 8.4 (Berkeley) 4/2/94"; 40 #else 41 static char rcsid[] = "$OpenBSD: util.c,v 1.4 1998/03/30 06:59:34 deraadt Exp $"; 42 #endif 43 #endif /* not lint */ 44 45 #include <sys/types.h> 46 47 #include <ctype.h> 48 #include <pwd.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <time.h> 53 #include <tzfile.h> 54 #include <unistd.h> 55 56 #include "chpass.h" 57 #include "pathnames.h" 58 59 char * 60 ttoa(buf, len, tval) 61 char *buf; 62 size_t len; 63 time_t tval; 64 { 65 if (tval) { 66 struct tm *tp = localtime(&tval); 67 68 (void) strftime(buf, len, "%B %d, %Y", tp); 69 buf[len - 1] = '\0'; 70 } 71 else if (len > 0) 72 *buf = '\0'; 73 return (buf); 74 } 75 76 int 77 atot(p, store) 78 char *p; 79 time_t *store; 80 { 81 static struct tm *lt; 82 struct tm tm; 83 char *t; 84 time_t tval; 85 86 if (!*p) { 87 *store = 0; 88 return (0); 89 } 90 if (!lt) { 91 unsetenv("TZ"); 92 (void)time(&tval); 93 lt = localtime(&tval); 94 } 95 (void) memset(&tm, 0, sizeof(tm)); 96 for (t = p; (t = strchr(t, ',')) != NULL; t++) 97 *t = ' '; 98 t = strptime(p, "%B %d %Y", &tm); 99 if (t == NULL || (*t != '\0' && *t != '\n')) 100 return 1; 101 *store = mktime(&tm); 102 if (*store == (time_t) -1) 103 return 1; 104 return (0); 105 } 106 107 char * 108 ok_shell(name) 109 char *name; 110 { 111 char *p, *sh; 112 113 setusershell(); 114 while ((sh = getusershell()) != NULL) { 115 if (!strcmp(name, sh)) 116 return (name); 117 /* allow just shell name, but use "real" path */ 118 if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0) 119 return (sh); 120 } 121 return (NULL); 122 } 123