1 /* $NetBSD: util.c,v 1.11 2003/08/07 11:13:19 agc 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 1.11 2003/08/07 11:13:19 agc 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(buf, len, tval) 57 char *buf; 58 size_t len; 59 time_t tval; 60 { 61 62 if (tval) { 63 struct tm *tp = localtime(&tval); 64 65 (void) strftime(buf, len, "%B %d, %Y", tp); 66 buf[len - 1] = '\0'; 67 } 68 else if (len > 0) 69 *buf = '\0'; 70 return (buf); 71 } 72 73 int 74 atot(p, store) 75 const char *p; 76 time_t *store; 77 { 78 static struct tm *lt; 79 struct tm tm; 80 char *t; 81 time_t tval; 82 83 if (!*p) { 84 *store = 0; 85 return (0); 86 } 87 if (!lt) { 88 unsetenv("TZ"); 89 (void)time(&tval); 90 lt = localtime(&tval); 91 } 92 (void) memset(&tm, 0, sizeof(tm)); 93 while ((t = strchr(p, ',')) != NULL) 94 *t = ' '; 95 t = strptime(p, "%B %d %Y", &tm); 96 if (t == NULL || (*t != '\0' && *t != '\n')) 97 return 1; 98 if ((*store = mktime(&tm)) == (time_t) -1) 99 return 1; 100 return (0); 101 } 102 103 const char * 104 ok_shell(name) 105 const char *name; 106 { 107 char *p; 108 const char *sh; 109 110 setusershell(); 111 while ((sh = getusershell()) != NULL) { 112 if (!strcmp(name, sh)) 113 return (name); 114 /* allow just shell name, but use "real" path */ 115 if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0) 116 return (sh); 117 } 118 return (NULL); 119 } 120