1 /* $OpenBSD: util.c,v 1.7 2003/07/01 01:01:28 avsm 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. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)util.c 8.4 (Berkeley) 4/2/94"; 36 #else 37 static char rcsid[] = "$OpenBSD: util.c,v 1.7 2003/07/01 01:01:28 avsm 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 54 char * 55 ttoa(char *buf, size_t len, time_t tval) 56 { 57 if (tval) { 58 struct tm *tp = localtime(&tval); 59 60 (void) strftime(buf, len, "%B %d, %Y", tp); 61 buf[len - 1] = '\0'; 62 } else if (len > 0) 63 *buf = '\0'; 64 return (buf); 65 } 66 67 int 68 atot(char *p, time_t *store) 69 { 70 static struct tm *lt; 71 struct tm tm; 72 time_t tval; 73 char *t; 74 75 if (!*p) { 76 *store = 0; 77 return (0); 78 } 79 if (!lt) { 80 unsetenv("TZ"); 81 (void)time(&tval); 82 lt = localtime(&tval); 83 } 84 (void) memset(&tm, 0, sizeof(tm)); 85 for (t = p; (t = strchr(t, ',')) != NULL; t++) 86 *t = ' '; 87 t = strptime(p, "%B %d %Y", &tm); 88 if (t == NULL || (*t != '\0' && *t != '\n')) 89 return 1; 90 *store = mktime(&tm); 91 if (*store == (time_t) -1) 92 return 1; 93 return (0); 94 } 95 96 char * 97 ok_shell(char *name) 98 { 99 char *p, *sh; 100 101 setusershell(); 102 while ((sh = getusershell()) != NULL) { 103 if (!strcmp(name, sh)) 104 return (name); 105 /* allow just shell name, but use "real" path */ 106 if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0) 107 return (sh); 108 } 109 return (NULL); 110 } 111