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 2009 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 #include "loginrec.h" 49 #include "log.h" 50 #include "buffer.h" 51 #include "servconf.h" 52 #include "canohost.h" 53 #include "packet.h" 54 55 extern u_int utmp_len; 56 extern ServerOptions options; 57 58 /* 59 * Records that the user has logged in. If only these parts of operating 60 * systems were more standardized. 61 */ 62 void 63 record_login(pid_t pid, const char *ttyname, const char *progname, 64 const char *user) 65 { 66 struct logininfo *li; 67 static int initialized = 0; 68 static socklen_t fromlen; 69 static struct sockaddr_storage from; 70 static const char *remote_name_or_ip; 71 72 if (pid == 0) 73 pid = getpid(); 74 /* 75 * Get IP address of client. If the connection is not a socket, let 76 * the address be 0.0.0.0. 77 */ 78 if (!initialized) { 79 (void) memset(&from, 0, sizeof(from)); 80 if (packet_connection_is_on_socket()) { 81 fromlen = sizeof(from); 82 if (getpeername(packet_get_connection_in(), 83 (struct sockaddr *) &from, &fromlen) < 0) { 84 debug("getpeername: %.100s", strerror(errno)); 85 fatal_cleanup(); 86 } 87 } 88 remote_name_or_ip = get_remote_name_or_ip(utmp_len, 89 options.verify_reverse_mapping); 90 91 initialized = 1; 92 } 93 94 li = login_alloc_entry(pid, user, remote_name_or_ip, ttyname, progname); 95 login_set_addr(li, (struct sockaddr*) &from, sizeof(struct sockaddr)); 96 (void) login_login(li); 97 login_free_entry(li); 98 } 99 100 /* Records that the user has logged out. */ 101 void 102 record_logout(pid_t pid, const char *ttyname, const char *progname, 103 const char *user) 104 { 105 struct logininfo *li; 106 107 li = login_alloc_entry(pid, user, NULL, ttyname, progname); 108 (void) login_logout(li); 109 login_free_entry(li); 110 } 111