1 /* $OpenBSD: util.c,v 1.12 2009/10/27 23:59:36 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. 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 #include <sys/types.h> 34 35 #include <ctype.h> 36 #include <pwd.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <time.h> 41 #include <tzfile.h> 42 #include <unistd.h> 43 44 #include "chpass.h" 45 46 char * 47 ttoa(char *buf, size_t len, time_t tval) 48 { 49 if (tval) { 50 struct tm *tp = localtime(&tval); 51 52 (void) strftime(buf, len, "%B %d, %Y", tp); 53 buf[len - 1] = '\0'; 54 } else if (len > 0) 55 *buf = '\0'; 56 return (buf); 57 } 58 59 int 60 atot(char *p, time_t *store) 61 { 62 struct tm tm; 63 char *t; 64 65 if (!*p) { 66 *store = 0; 67 return (0); 68 } 69 (void) memset(&tm, 0, sizeof(tm)); 70 for (t = p; (t = strchr(t, ',')) != NULL; t++) 71 *t = ' '; 72 t = strptime(p, "%B %d %Y", &tm); 73 if (t == NULL || (*t != '\0' && *t != '\n')) 74 return 1; 75 tm.tm_isdst = -1; 76 *store = mktime(&tm); 77 if (*store == (time_t) -1) 78 return 1; 79 return (0); 80 } 81 82 int 83 ok_shell(char *name, char **out) 84 { 85 char *p, *sh; 86 87 setusershell(); 88 while ((sh = getusershell()) != NULL) { 89 if (!strcmp(name, sh)) 90 break; 91 /* allow just shell name, but use "real" path */ 92 if ((p = strrchr(sh, '/')) && strcmp(name, p + 1) == 0) 93 break; 94 } 95 if (sh && out) 96 *out = strdup(sh); 97 endusershell(); 98 return (sh != NULL); 99 } 100