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 1.7 2005/07/17 07:04:47 djm 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 #ifdef DAY 36 # undef DAY 37 #endif 38 #define DAY (24L * 60 * 60) /* 1 day in seconds */ 39 40 extern Buffer loginmsg; 41 42 /* 43 * For the account and password expiration functions, we assume the expiry 44 * occurs the day after the day specified. 45 */ 46 47 /* 48 * Check if specified account is expired. Returns 1 if account is expired, 49 * 0 otherwise. 50 */ 51 int 52 auth_shadow_acctexpired(struct spwd *spw) 53 { 54 time_t today; 55 int daysleft; 56 char buf[256]; 57 58 today = time(NULL) / DAY; 59 daysleft = spw->sp_expire - today; 60 debug3("%s: today %d sp_expire %d days left %d", __func__, (int)today, 61 (int)spw->sp_expire, daysleft); 62 63 if (spw->sp_expire == -1) { 64 debug3("account expiration disabled"); 65 } else if (daysleft < 0) { 66 logit("Account %.100s has expired", spw->sp_namp); 67 return 1; 68 } else if (daysleft <= spw->sp_warn) { 69 debug3("account will expire in %d days", daysleft); 70 snprintf(buf, sizeof(buf), 71 "Your account will expire in %d day%s.\n", daysleft, 72 daysleft == 1 ? "" : "s"); 73 buffer_append(&loginmsg, buf, strlen(buf)); 74 } 75 76 return 0; 77 } 78 79 /* 80 * Checks password expiry for platforms that use shadow passwd files. 81 * Returns: 1 = password expired, 0 = password not expired 82 */ 83 int 84 auth_shadow_pwexpired(Authctxt *ctxt) 85 { 86 struct spwd *spw = NULL; 87 const char *user = ctxt->pw->pw_name; 88 char buf[256]; 89 time_t today; 90 int daysleft, disabled = 0; 91 92 if ((spw = getspnam((char *)user)) == NULL) { 93 error("Could not get shadow information for %.100s", user); 94 return 0; 95 } 96 97 today = time(NULL) / DAY; 98 debug3("%s: today %d sp_lstchg %d sp_max %d", __func__, (int)today, 99 (int)spw->sp_lstchg, (int)spw->sp_max); 100 101 #if defined(__hpux) && !defined(HAVE_SECUREWARE) 102 if (iscomsec()) { 103 struct pr_passwd *pr; 104 105 pr = getprpwnam((char *)user); 106 107 /* Test for Trusted Mode expiry disabled */ 108 if (pr != NULL && pr->ufld.fd_min == 0 && 109 pr->ufld.fd_lifetime == 0 && pr->ufld.fd_expire == 0 && 110 pr->ufld.fd_pw_expire_warning == 0 && 111 pr->ufld.fd_schange != 0) 112 disabled = 1; 113 } 114 #endif 115 116 /* TODO: check sp_inact */ 117 daysleft = spw->sp_lstchg + spw->sp_max - today; 118 if (disabled) { 119 debug3("password expiration disabled"); 120 } else if (spw->sp_lstchg == 0) { 121 logit("User %.100s password has expired (root forced)", user); 122 return 1; 123 } else if (spw->sp_max == -1) { 124 debug3("password expiration disabled"); 125 } else if (daysleft < 0) { 126 logit("User %.100s password has expired (password aged)", user); 127 return 1; 128 } else if (daysleft <= spw->sp_warn) { 129 debug3("password will expire in %d days", daysleft); 130 snprintf(buf, sizeof(buf), 131 "Your password will expire in %d day%s.\n", daysleft, 132 daysleft == 1 ? "" : "s"); 133 buffer_append(&loginmsg, buf, strlen(buf)); 134 } 135 136 return 0; 137 } 138 #endif /* USE_SHADOW && HAS_SHADOW_EXPIRE */ 139