1 /* $NetBSD: util.c,v 1.12 2005/02/17 17:09:48 xtraeme Exp $ */ 2 3 /*- 4 * Copyright (c) 1988, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)util.c 8.4 (Berkeley) 4/2/94"; 36 #else 37 __RCSID("$NetBSD: util.c,v 1.12 2005/02/17 17:09:48 xtraeme Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include <sys/types.h> 42 43 #include <ctype.h> 44 #include <pwd.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <time.h> 49 #include <tzfile.h> 50 #include <unistd.h> 51 52 #include "chpass.h" 53 #include "pathnames.h" 54 55 char * 56 ttoa(char *buf, size_t len, time_t tval) 57 { 58 59 if (tval) { 60 struct tm *tp = localtime(&tval); 61 62 (void) strftime(buf, len, "%B %d, %Y", tp); 63 buf[len - 1] = '\0'; 64 } 65 else if (len > 0) 66 *buf = '\0'; 67 return (buf); 68 } 69 70 int 71 atot(const char *p, time_t *store) 72 { 73 static struct tm *lt; 74 struct tm tm; 75 char *t; 76 time_t tval; 77 78 if (!*p) { 79 *store = 0; 80 return (0); 81 } 82 if (!lt) { 83 unsetenv("TZ"); 84 (void)time(&tval); 85 lt = localtime(&tval); 86 } 87 (void) memset(&tm, 0, sizeof(tm)); 88 while ((t = strchr(p, ',')) != NULL) 89 *t = ' '; 90 t = strptime(p, "%B %d %Y", &tm); 91 if (t == NULL || (*t != '\0' && *t != '\n')) 92 return 1; 93 if ((*store = mktime(&tm)) == (time_t) -1) 94 return 1; 95 return (0); 96 } 97 98 const char * 99 ok_shell(const char *name) 100 { 101 char *p; 102 const char *sh; 103 104 setusershell(); 105 while ((sh = getusershell()) != NULL) { 106 if (!strcmp(name, sh)) 107 return (name); 108 /* allow just shell name, but use "real" path */ 109 if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0) 110 return (sh); 111 } 112 return (NULL); 113 } 114