Blob Blame History Raw
diff -up openssh-5.3p1/auth.c.audit openssh-5.3p1/auth.c
--- openssh-5.3p1/auth.c.audit	2008-11-05 06:12:54.000000000 +0100
+++ openssh-5.3p1/auth.c	2009-12-21 08:50:12.000000000 +0100
@@ -287,6 +287,12 @@ auth_log(Authctxt *authctxt, int authent
 		    get_canonical_hostname(options.use_dns), "ssh", &loginmsg);
 # endif
 #endif
+#if HAVE_LINUX_AUDIT
+        if (authenticated == 0 && !authctxt->postponed) {
+                linux_audit_record_event(-1, authctxt->user, NULL,
+                        get_remote_ipaddr(), "sshd", 0);
+        }
+#endif
 #ifdef SSH_AUDIT_EVENTS
 	if (authenticated == 0 && !authctxt->postponed)
 		audit_event(audit_classify_auth(method));
@@ -533,6 +539,10 @@ getpwnamallow(const char *user)
 		record_failed_login(user,
 		    get_canonical_hostname(options.use_dns), "ssh");
 #endif
+#ifdef HAVE_LINUX_AUDIT
+                linux_audit_record_event(-1, user, NULL, get_remote_ipaddr(),
+                        "sshd", 0);
+#endif
 #ifdef SSH_AUDIT_EVENTS
 		audit_event(SSH_INVALID_USER);
 #endif /* SSH_AUDIT_EVENTS */
diff -up openssh-5.3p1/configure.ac.audit openssh-5.3p1/configure.ac
--- openssh-5.3p1/configure.ac.audit	2009-12-21 08:48:59.000000000 +0100
+++ openssh-5.3p1/configure.ac	2009-12-21 08:51:47.000000000 +0100
@@ -3409,6 +3409,18 @@ AC_ARG_WITH(selinux,
 	fi ]
 )
 
+# Check whether user wants Linux audit support
+LINUX_AUDIT_MSG="no"
+AC_ARG_WITH(linux-audit,
+        [  --with-linux-audit   Enable Linux audit support],
+        [ if test "x$withval" != "xno" ; then
+                AC_DEFINE(HAVE_LINUX_AUDIT,1,[Define if you want Linux audit support.])
+                LINUX_AUDIT_MSG="yes"
+                AC_CHECK_HEADERS(libaudit.h)
+                SSHDLIBS="$SSHDLIBS -laudit"
+        fi ]
+)
+
 # Check whether user wants Kerberos 5 support
 KRB5_MSG="no"
 AC_ARG_WITH(kerberos5,
@@ -4234,6 +4246,7 @@ echo "                       PAM support
 echo "                   OSF SIA support: $SIA_MSG"
 echo "                 KerberosV support: $KRB5_MSG"
 echo "                   SELinux support: $SELINUX_MSG"
+echo "               Linux audit support: $LINUX_AUDIT_MSG"
 echo "                 Smartcard support: $SCARD_MSG"
 echo "                     S/KEY support: $SKEY_MSG"
 echo "              TCP Wrappers support: $TCPW_MSG"
diff -up openssh-5.3p1/loginrec.c.audit openssh-5.3p1/loginrec.c
--- openssh-5.3p1/loginrec.c.audit	2009-02-12 03:12:22.000000000 +0100
+++ openssh-5.3p1/loginrec.c	2009-12-21 08:54:17.000000000 +0100
@@ -176,6 +176,10 @@
 #include "auth.h"
 #include "buffer.h"
 
+#ifdef HAVE_LINUX_AUDIT
+# include <libaudit.h>
+#endif
+
 #ifdef HAVE_UTIL_H
 # include <util.h>
 #endif
@@ -202,6 +206,9 @@ int utmp_write_entry(struct logininfo *l
 int utmpx_write_entry(struct logininfo *li);
 int wtmp_write_entry(struct logininfo *li);
 int wtmpx_write_entry(struct logininfo *li);
+#ifdef HAVE_LINUX_AUDIT
+int linux_audit_write_entry(struct logininfo *li);
+#endif
 int lastlog_write_entry(struct logininfo *li);
 int syslogin_write_entry(struct logininfo *li);
 
@@ -440,6 +447,10 @@ login_write(struct logininfo *li)
 
 	/* set the timestamp */
 	login_set_current_time(li);
+#ifdef HAVE_LINUX_AUDIT
+        if (linux_audit_write_entry(li) == 0)
+                fatal("linux_audit_write_entry failed: %s", strerror(errno));
+#endif
 #ifdef USE_LOGIN
 	syslogin_write_entry(li);
 #endif
@@ -1394,6 +1405,47 @@ wtmpx_get_entry(struct logininfo *li)
 }
 #endif /* USE_WTMPX */
 
+#ifdef HAVE_LINUX_AUDIT
+int
+linux_audit_record_event(int uid, const char *username,
+        const char *hostname, const char *ip, const char *ttyn, int success)
+{
+        int audit_fd, rc;
+
+        audit_fd = audit_open();
+        if (audit_fd < 0) {
+                 if (errno == EINVAL || errno == EPROTONOSUPPORT ||
+                                        errno == EAFNOSUPPORT)
+                        return 1; /* No audit support in kernel */
+                else
+                        return 0; /* Must prevent login */
+        }
+        rc = audit_log_acct_message(audit_fd, AUDIT_USER_LOGIN,
+                NULL, "login", username ? username : "(unknown)",
+                username == NULL ? uid : -1, hostname, ip, ttyn, success);
+        close(audit_fd);
+        if (rc >= 0)
+                return 1;
+        else
+                return 0;
+}
+
+int
+linux_audit_write_entry(struct logininfo *li)
+{
+        switch(li->type) {
+        case LTYPE_LOGIN:
+                return (linux_audit_record_event(li->uid, NULL, li->hostname,
+                        NULL, li->line, 1));
+        case LTYPE_LOGOUT:
+                return (1);        /* We only care about logins */
+        default:
+                logit("%s: invalid type field", __func__);
+                return (0);
+        }
+}
+#endif /* HAVE_LINUX_AUDIT */
+
 /**
  ** Low-level libutil login() functions
  **/
diff -up openssh-5.3p1/loginrec.h.audit openssh-5.3p1/loginrec.h
--- openssh-5.3p1/loginrec.h.audit	2006-08-05 04:39:40.000000000 +0200
+++ openssh-5.3p1/loginrec.h	2009-12-21 08:48:59.000000000 +0100
@@ -127,5 +127,9 @@ char *line_stripname(char *dst, const ch
 char *line_abbrevname(char *dst, const char *src, int dstsize);
 
 void record_failed_login(const char *, const char *, const char *);
+#ifdef HAVE_LINUX_AUDIT
+int linux_audit_record_event(int uid, const char *username,
+        const char *hostname, const char *ip, const char *ttyn, int success);
+#endif /* HAVE_LINUX_AUDIT */
 
 #endif /* _HAVE_LOGINREC_H_ */