1 /* $Id: audit-linux.c,v 1.1 2011/01/17 10:15:30 dtucker Exp $ */
4 * Copyright 2010 Red Hat, Inc. All rights reserved.
5 * Use is subject to license terms.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 * Red Hat author: Jan F. Chadima <jchadima@redhat.com>
31 #if defined(USE_LINUX_AUDIT)
41 const char *audit_username(void);
44 linux_audit_record_event(int uid, const char *username, const char *hostname,
45 const char *ip, const char *ttyn, int success)
47 int audit_fd, rc, saved_errno;
49 if ((audit_fd = audit_open()) < 0) {
50 if (errno == EINVAL || errno == EPROTONOSUPPORT ||
51 errno == EAFNOSUPPORT)
52 return 1; /* No audit support in kernel */
54 return 0; /* Must prevent login */
56 rc = audit_log_acct_message(audit_fd, AUDIT_USER_LOGIN,
57 NULL, "login", username ? username : "(unknown)",
58 username == NULL ? uid : -1, hostname, ip, ttyn, success);
63 * Do not report error if the error is EPERM and sshd is run as non
66 if ((rc == -EPERM) && (geteuid() != 0))
73 /* Below is the sshd audit API code */
76 audit_connection_from(const char *host, int port)
82 audit_run_command(const char *command)
88 audit_session_open(struct logininfo *li)
90 if (linux_audit_record_event(li->uid, NULL, li->hostname, NULL,
92 fatal("linux_audit_write_entry failed: %s", strerror(errno));
96 audit_session_close(struct logininfo *li)
102 audit_event(ssh_audit_event_t event)
104 struct ssh *ssh = active_state; /* XXX */
107 case SSH_AUTH_SUCCESS:
108 case SSH_CONNECTION_CLOSE:
110 case SSH_LOGIN_EXCEED_MAXTRIES:
111 case SSH_LOGIN_ROOT_DENIED:
113 case SSH_AUTH_FAIL_NONE:
114 case SSH_AUTH_FAIL_PASSWD:
115 case SSH_AUTH_FAIL_KBDINT:
116 case SSH_AUTH_FAIL_PUBKEY:
117 case SSH_AUTH_FAIL_HOSTBASED:
118 case SSH_AUTH_FAIL_GSSAPI:
119 case SSH_INVALID_USER:
120 linux_audit_record_event(-1, audit_username(), NULL,
121 ssh_remote_ipaddr(ssh), "sshd", 0);
124 debug("%s: unhandled event %d", __func__, event);
128 #endif /* USE_LINUX_AUDIT */