1 /* 2 * Author: Tatu Ylonen <ylo@cs.hut.fi> 3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 4 * All rights reserved 5 * This file performs some of the things login(1) normally does. We cannot 6 * easily use something like login -p -h host -f user, because there are 7 * several different logins around, and it is hard to determined what kind of 8 * login the current system has. Also, we want to be able to execute commands 9 * on a tty. 10 * 11 * As far as I am concerned, the code I have written for this software 12 * can be used freely for any purpose. Any derived versions of this 13 * software must be clearly marked as such, and if the derived work is 14 * incompatible with the protocol description in the RFC file, it must be 15 * called by a name other than "ssh" or "Secure Shell". 16 * 17 * Copyright (c) 1999 Theo de Raadt. All rights reserved. 18 * Copyright (c) 1999 Markus Friedl. All rights reserved. 19 * 20 * Redistribution and use in source and binary forms, with or without 21 * modification, are permitted provided that the following conditions 22 * are met: 23 * 1. Redistributions of source code must retain the above copyright 24 * notice, this list of conditions and the following disclaimer. 25 * 2. Redistributions in binary form must reproduce the above copyright 26 * notice, this list of conditions and the following disclaimer in the 27 * documentation and/or other materials provided with the distribution. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 30 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 31 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 32 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 33 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 34 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 38 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 39 */ 40 /* 41 * Copyright 2003 Sun Microsystems, Inc. All rights reserved. 42 * Use is subject to license terms. 43 */ 44 45 #include "includes.h" 46 RCSID("$OpenBSD: sshlogin.c,v 1.5 2002/08/29 15:57:25 stevesk Exp $"); 47 48 #pragma ident "%Z%%M% %I% %E% SMI" 49 50 #include "loginrec.h" 51 #include "log.h" 52 #include "servconf.h" 53 #include "canohost.h" 54 #include "packet.h" 55 56 extern u_int utmp_len; 57 extern ServerOptions options; 58 59 /* 60 * Returns the time when the user last logged in. Returns 0 if the 61 * information is not available. This must be called before record_login. 62 * The host the user logged in from will be returned in buf. 63 */ 64 u_long 65 get_last_login_time(uid_t uid, const char *logname, 66 char *buf, u_int bufsize) 67 { 68 struct logininfo li; 69 70 (void) login_get_lastlog(&li, uid); 71 (void) strlcpy(buf, li.hostname, bufsize); 72 return li.tv_sec; 73 } 74 75 /* 76 * Records that the user has logged in. I these parts of operating systems 77 * were more standardized. 78 */ 79 void 80 record_login(pid_t pid, const char *ttyname, const char *progname, 81 const char *user) 82 { 83 struct logininfo *li; 84 static int initialized = 0; 85 static socklen_t fromlen; 86 static struct sockaddr_storage from; 87 static const char *remote_name_or_ip; 88 89 if (pid == 0) 90 pid = getpid(); 91 /* 92 * Get IP address of client. If the connection is not a socket, let 93 * the address be 0.0.0.0. 94 */ 95 if (!initialized) { 96 (void) memset(&from, 0, sizeof(from)); 97 if (packet_connection_is_on_socket()) { 98 fromlen = sizeof(from); 99 if (getpeername(packet_get_connection_in(), 100 (struct sockaddr *) &from, &fromlen) < 0) { 101 debug("getpeername: %.100s", strerror(errno)); 102 fatal_cleanup(); 103 } 104 } 105 remote_name_or_ip = get_remote_name_or_ip(utmp_len, 106 options.verify_reverse_mapping); 107 108 initialized = 1; 109 } 110 111 li = login_alloc_entry(pid, user, remote_name_or_ip, ttyname, progname); 112 login_set_addr(li, (struct sockaddr*) &from, sizeof(struct sockaddr)); 113 (void) login_login(li); 114 login_free_entry(li); 115 } 116 117 #ifdef LOGIN_NEEDS_UTMPX 118 void 119 record_utmp_only(pid_t pid, const char *ttyname, const char *user, 120 const char *host, struct sockaddr * addr) 121 { 122 struct logininfo *li; 123 124 li = login_alloc_entry(pid, user, host, ttyname, NULL); 125 login_set_addr(li, addr, sizeof(struct sockaddr)); 126 (void) login_utmp_only(li); 127 login_free_entry(li); 128 } 129 #endif 130 131 /* Records that the user has logged out. */ 132 void 133 record_logout(pid_t pid, const char *ttyname, const char *progname, 134 const char *user) 135 { 136 struct logininfo *li; 137 138 li = login_alloc_entry(pid, user, NULL, ttyname, progname); 139 (void) login_logout(li); 140 login_free_entry(li); 141 } 142