1 /* 2 * Copyright (c) 2004 Darren Tucker. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 */ 24 25 #include "includes.h" 26 RCSID("$Id: auth-shadow.c,v 1.5 2004/02/21 23:22:05 dtucker Exp $"); 27 28 #if defined(USE_SHADOW) && defined(HAS_SHADOW_EXPIRE) 29 #include <shadow.h> 30 31 #include "auth.h" 32 #include "buffer.h" 33 #include "log.h" 34 35 #define DAY (24L * 60 * 60) /* 1 day in seconds */ 36 37 extern Buffer loginmsg; 38 39 /* 40 * For the account and password expiration functions, we assume the expiry 41 * occurs the day after the day specified. 42 */ 43 44 /* 45 * Check if specified account is expired. Returns 1 if account is expired, 46 * 0 otherwise. 47 */ 48 int 49 auth_shadow_acctexpired(struct spwd *spw) 50 { 51 time_t today; 52 int daysleft; 53 char buf[256]; 54 55 today = time(NULL) / DAY; 56 daysleft = spw->sp_expire - today; 57 debug3("%s: today %d sp_expire %d days left %d", __func__, (int)today, 58 (int)spw->sp_expire, daysleft); 59 60 if (spw->sp_expire == -1) { 61 debug3("account expiration disabled"); 62 } else if (daysleft < 0) { 63 logit("Account %.100s has expired", spw->sp_namp); 64 return 1; 65 } else if (daysleft <= spw->sp_warn) { 66 debug3("account will expire in %d days", daysleft); 67 snprintf(buf, sizeof(buf), 68 "Your account will expire in %d day%s.\n", daysleft, 69 daysleft == 1 ? "" : "s"); 70 buffer_append(&loginmsg, buf, strlen(buf)); 71 } 72 73 return 0; 74 } 75 76 /* 77 * Checks password expiry for platforms that use shadow passwd files. 78 * Returns: 1 = password expired, 0 = password not expired 79 */ 80 int 81 auth_shadow_pwexpired(Authctxt *ctxt) 82 { 83 struct spwd *spw = NULL; 84 const char *user = ctxt->pw->pw_name; 85 char buf[256]; 86 time_t today; 87 int daysleft, disabled = 0; 88 89 if ((spw = getspnam((char *)user)) == NULL) { 90 error("Could not get shadow information for %.100s", user); 91 return 0; 92 } 93 94 today = time(NULL) / DAY; 95 debug3("%s: today %d sp_lstchg %d sp_max %d", __func__, (int)today, 96 (int)spw->sp_lstchg, (int)spw->sp_max); 97 98 #if defined(__hpux) && !defined(HAVE_SECUREWARE) 99 if (iscomsec()) { 100 struct pr_passwd *pr; 101 102 pr = getprpwnam((char *)user); 103 104 /* Test for Trusted Mode expiry disabled */ 105 if (pr != NULL && pr->ufld.fd_min == 0 && 106 pr->ufld.fd_lifetime == 0 && pr->ufld.fd_expire == 0 && 107 pr->ufld.fd_pw_expire_warning == 0 && 108 pr->ufld.fd_schange != 0) 109 disabled = 1; 110 } 111 #endif 112 113 /* TODO: check sp_inact */ 114 daysleft = spw->sp_lstchg + spw->sp_max - today; 115 if (disabled) { 116 debug3("password expiration disabled"); 117 } else if (spw->sp_lstchg == 0) { 118 logit("User %.100s password has expired (root forced)", user); 119 return 1; 120 } else if (spw->sp_max == -1) { 121 debug3("password expiration disabled"); 122 } else if (daysleft < 0) { 123 logit("User %.100s password has expired (password aged)", user); 124 return 1; 125 } else if (daysleft <= spw->sp_warn) { 126 debug3("password will expire in %d days", daysleft); 127 snprintf(buf, sizeof(buf), 128 "Your password will expire in %d day%s.\n", daysleft, 129 daysleft == 1 ? "" : "s"); 130 buffer_append(&loginmsg, buf, strlen(buf)); 131 } 132 133 return 0; 134 } 135 #endif /* USE_SHADOW && HAS_SHADOW_EXPIRE */ 136