2 * Author: Tatu Ylonen <ylo@cs.hut.fi>
3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
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
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".
17 * Copyright (c) 1999 Theo de Raadt. All rights reserved.
18 * Copyright (c) 1999 Markus Friedl. All rights reserved.
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted provided that the following conditions
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.
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.
48 extern Buffer loginmsg;
49 extern ServerOptions options;
52 * Returns the time when the user last logged in. Returns 0 if the
53 * information is not available. This must be called before record_login.
54 * The host the user logged in from will be returned in buf.
57 get_last_login_time(uid_t uid, const char *logname,
58 char *buf, u_int bufsize)
62 login_get_lastlog(&li, uid);
63 strlcpy(buf, li.hostname, bufsize);
68 * Generate and store last login message. This must be done before
69 * login_login() is called and lastlog is updated.
72 store_lastlog_message(const char *user, uid_t uid)
74 char *time_string, hostname[MAXHOSTNAMELEN] = "", buf[512];
75 time_t last_login_time;
77 #ifndef NO_SSH_LASTLOG
78 if (!options.print_lastlog)
81 last_login_time = get_last_login_time(uid, user, hostname,
84 if (last_login_time != 0) {
85 time_string = ctime(&last_login_time);
86 if (strchr(time_string, '\n'))
87 *strchr(time_string, '\n') = '\0';
88 if (strcmp(hostname, "") == 0)
89 snprintf(buf, sizeof(buf), "Last login: %s\r\n",
92 snprintf(buf, sizeof(buf), "Last login: %s from %s\r\n",
93 time_string, hostname);
94 buffer_append(&loginmsg, buf, strlen(buf));
96 #endif /* NO_SSH_LASTLOG */
100 * Records that the user has logged in. I wish these parts of operating
101 * systems were more standardized.
104 record_login(pid_t pid, const char *tty, const char *user, uid_t uid,
105 const char *host, struct sockaddr * addr, socklen_t addrlen)
107 struct logininfo *li;
109 /* save previous login details before writing new */
110 store_lastlog_message(user, uid);
112 li = login_alloc_entry(pid, user, host, tty);
113 login_set_addr(li, addr, addrlen);
115 login_free_entry(li);
118 #ifdef LOGIN_NEEDS_UTMPX
120 record_utmp_only(pid_t pid, const char *ttyname, const char *user,
121 const char *host, struct sockaddr * addr, socklen_t addrlen)
123 struct logininfo *li;
125 li = login_alloc_entry(pid, user, host, ttyname);
126 login_set_addr(li, addr, addrlen);
128 login_free_entry(li);
132 /* Records that the user has logged out. */
134 record_logout(pid_t pid, const char *tty, const char *user)
136 struct logininfo *li;
138 li = login_alloc_entry(pid, user, NULL, tty);
140 login_free_entry(li);