vishalmishra434 / rpms / openssh

Forked from rpms/openssh a month ago
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Jan F faae1e
diff -up openssh-5.6p1/audit-bsm.c.audit openssh-5.6p1/audit-bsm.c
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--- openssh-5.6p1/audit-bsm.c.audit	2008-02-25 11:05:04.000000000 +0100
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+++ openssh-5.6p1/audit-bsm.c	2010-10-20 09:15:47.000000000 +0200
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@@ -305,13 +305,13 @@ audit_run_command(const char *command)
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 }
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 void
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-audit_session_open(const char *ttyn)
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+audit_session_open(struct logininfo *li)
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 {
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 	/* not implemented */
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 }
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 void
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-audit_session_close(const char *ttyn)
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+audit_session_close(struct logininfo *li)
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 {
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 	/* not implemented */
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 }
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diff -up openssh-5.6p1/audit.c.audit openssh-5.6p1/audit.c
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--- openssh-5.6p1/audit.c.audit	2006-09-01 07:38:36.000000000 +0200
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+++ openssh-5.6p1/audit.c	2010-10-20 09:15:47.000000000 +0200
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@@ -147,9 +147,9 @@ audit_event(ssh_audit_event_t event)
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  * within a single connection.
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  */
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 void
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-audit_session_open(const char *ttyn)
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+audit_session_open(struct logininfo *li)
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 {
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-	const char *t = ttyn ? ttyn : "(no tty)";
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+	const char *t = li->line ? li->line : "(no tty)";
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 	debug("audit session open euid %d user %s tty name %s", geteuid(),
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 	    audit_username(), t);
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@@ -163,9 +163,9 @@ audit_session_open(const char *ttyn)
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  * within a single connection.
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  */
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 void
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-audit_session_close(const char *ttyn)
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+audit_session_close(struct logininfo *li)
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 {
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-	const char *t = ttyn ? ttyn : "(no tty)";
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+	const char *t = li->line ? li->line : "(no tty)";
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 	debug("audit session close euid %d user %s tty name %s", geteuid(),
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 	    audit_username(), t);
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diff -up openssh-5.6p1/audit.h.audit openssh-5.6p1/audit.h
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--- openssh-5.6p1/audit.h.audit	2006-08-05 16:05:10.000000000 +0200
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+++ openssh-5.6p1/audit.h	2010-10-20 09:15:47.000000000 +0200
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@@ -26,6 +26,9 @@
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 #ifndef _SSH_AUDIT_H
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 # define _SSH_AUDIT_H
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+
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+#include "loginrec.h"
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+
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 enum ssh_audit_event_type {
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 	SSH_LOGIN_EXCEED_MAXTRIES,
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 	SSH_LOGIN_ROOT_DENIED,
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@@ -46,8 +49,8 @@ typedef enum ssh_audit_event_type ssh_au
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 void	audit_connection_from(const char *, int);
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 void	audit_event(ssh_audit_event_t);
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-void	audit_session_open(const char *);
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-void	audit_session_close(const char *);
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+void	audit_session_open(struct logininfo *);
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+void	audit_session_close(struct logininfo *);
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 void	audit_run_command(const char *);
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 ssh_audit_event_t audit_classify_auth(const char *);
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diff -up openssh-5.6p1/audit-linux.c.audit openssh-5.6p1/audit-linux.c
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--- openssh-5.6p1/audit-linux.c.audit	2010-10-20 09:15:47.000000000 +0200
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+++ openssh-5.6p1/audit-linux.c	2010-10-20 09:15:47.000000000 +0200
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@@ -0,0 +1,120 @@
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+/* $Id: audit-linux.c,v 1.1 jfch Exp $ */
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+
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+/*
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+ * Copyright 2010 Red Hat, Inc.  All rights reserved.
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+ * Use is subject to license terms.
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+ *
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+ * Redistribution and use in source and binary forms, with or without
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+ * modification, are permitted provided that the following conditions
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+ * are met:
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+ * 1. Redistributions of source code must retain the above copyright
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+ *    notice, this list of conditions and the following disclaimer.
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+ * 2. Redistributions in binary form must reproduce the above copyright
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+ *    notice, this list of conditions and the following disclaimer in the
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+ *    documentation and/or other materials provided with the distribution.
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+ *
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+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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+ *
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+ * Red Hat author: Jan F. Chadima <jchadima@redhat.com>
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+ */
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+
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+#include "includes.h"
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+#if defined(USE_LINUX_AUDIT)
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+#include <libaudit.h>
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+#include <unistd.h>
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+#include <string.h>
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+
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+#include "log.h"
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+#include "audit.h"
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+#include "canohost.h"
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+
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+const char* audit_username(void);
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+
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+int
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+linux_audit_record_event(int uid, const char *username,
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+    const char *hostname, const char *ip, const char *ttyn, int success)
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+{
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+	int audit_fd, rc, saved_errno;
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+
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+	audit_fd = audit_open();
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+	if (audit_fd < 0) {
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+		if (errno == EINVAL || errno == EPROTONOSUPPORT ||
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+		    errno == EAFNOSUPPORT)
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+			return 1; /* No audit support in kernel */
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+		else
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+			return 0; /* Must prevent login */
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+	}
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+	rc = audit_log_acct_message(audit_fd, AUDIT_USER_LOGIN,
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+	    NULL, "login", username ? username : "(unknown)",
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+	    username == NULL ? uid : -1, hostname, ip, ttyn, success);
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+	saved_errno = errno;
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+	close(audit_fd);
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+	errno = saved_errno;
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+	return (rc >= 0);
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+}
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+
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+/* Below is the sshd audit API code */
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+
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+void
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+audit_connection_from(const char *host, int port)
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+{
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+}
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+	/* not implemented */
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+
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+void
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+audit_run_command(const char *command)
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+{
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+	/* not implemented */
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+}
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+
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+void
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+audit_session_open(struct logininfo *li)
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+{
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+	if (linux_audit_record_event(li->uid, NULL, li->hostname,
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+	    NULL, li->line, 1) == 0)
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+		fatal("linux_audit_write_entry failed: %s", strerror(errno));
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+}
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+
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+void
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+audit_session_close(struct logininfo *li)
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+{
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+	/* not implemented */
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+}
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+
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+void
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+audit_event(ssh_audit_event_t event)
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+{
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+	switch(event) {
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+	case SSH_AUTH_SUCCESS:
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+	case SSH_CONNECTION_CLOSE:
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+	case SSH_NOLOGIN:
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+	case SSH_LOGIN_EXCEED_MAXTRIES:
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+	case SSH_LOGIN_ROOT_DENIED:
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+		break;
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+
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+	case SSH_AUTH_FAIL_NONE:
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+	case SSH_AUTH_FAIL_PASSWD:
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+	case SSH_AUTH_FAIL_KBDINT:
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+	case SSH_AUTH_FAIL_PUBKEY:
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+	case SSH_AUTH_FAIL_HOSTBASED:
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+	case SSH_AUTH_FAIL_GSSAPI:
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+	case SSH_INVALID_USER:
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+		linux_audit_record_event(-1, audit_username(), NULL,
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+			get_remote_ipaddr(), "sshd", 0);
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+		break;
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+
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+	default:
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+		debug("%s: unhandled event %d", __func__, event);
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+	}
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+}
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+
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+#endif /* USE_LINUX_AUDIT */
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diff -up openssh-5.6p1/configure.ac.audit openssh-5.6p1/configure.ac
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--- openssh-5.6p1/configure.ac.audit	2010-08-16 05:15:23.000000000 +0200
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+++ openssh-5.6p1/configure.ac	2010-10-20 09:15:47.000000000 +0200
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@@ -1308,7 +1308,7 @@ int main(void)
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 AUDIT_MODULE=none
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 AC_ARG_WITH(audit,
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-	[  --with-audit=module     Enable EXPERIMENTAL audit support (modules=debug,bsm)],
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+	[  --with-audit=module     Enable audit support (modules=debug,bsm,linux)],
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 	[
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 	  AC_MSG_CHECKING(for supported audit module)
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 	  case "$withval" in
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@@ -1332,10 +1332,18 @@ AC_ARG_WITH(audit,
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 		AC_CHECK_FUNCS(getaudit_addr aug_get_machine)
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 		AC_DEFINE(USE_BSM_AUDIT, 1, [Use BSM audit module])
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 		;;
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+	  linux)
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+		AC_MSG_RESULT(linux)
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+		AUDIT_MODULE=linux
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+		dnl    Checks for headers, libs and functions
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+		AC_CHECK_HEADERS(libaudit.h)
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+		SSHDLIBS="$SSHDLIBS -laudit"
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+		AC_DEFINE(USE_LINUX_AUDIT, 1, [Use Linux audit module])
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+		;;
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 	  debug)
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 		AUDIT_MODULE=debug
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 		AC_MSG_RESULT(debug)
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-		AC_DEFINE(SSH_AUDIT_EVENTS, 1, Use audit debugging module)
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+		AC_DEFINE(SSH_AUDIT_EVENTS, 1, [Use audit debugging module])
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 		;;
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 	  no)
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 		AC_MSG_RESULT(no)
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diff -up openssh-5.6p1/defines.h.audit openssh-5.6p1/defines.h
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--- openssh-5.6p1/defines.h.audit	2010-04-09 10:13:27.000000000 +0200
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+++ openssh-5.6p1/defines.h	2010-10-20 09:15:47.000000000 +0200
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@@ -566,6 +566,11 @@ struct winsize {
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 # define CUSTOM_SSH_AUDIT_EVENTS
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 #endif
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+#ifdef USE_LINUX_AUDIT
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+# define SSH_AUDIT_EVENTS
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+# define CUSTOM_SSH_AUDIT_EVENTS
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+#endif
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+
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 #if !defined(HAVE___func__) && defined(HAVE___FUNCTION__)
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 #  define __func__ __FUNCTION__
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 #elif !defined(HAVE___func__)
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diff -up openssh-5.6p1/loginrec.c.audit openssh-5.6p1/loginrec.c
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--- openssh-5.6p1/loginrec.c.audit	2010-04-09 10:13:27.000000000 +0200
Jan F ba25ec
+++ openssh-5.6p1/loginrec.c	2010-10-20 09:15:47.000000000 +0200
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@@ -468,9 +468,9 @@ login_write(struct logininfo *li)
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 #endif
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 #ifdef SSH_AUDIT_EVENTS
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 	if (li->type == LTYPE_LOGIN)
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-		audit_session_open(li->line);
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+		audit_session_open(li);
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 	else if (li->type == LTYPE_LOGOUT)
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-		audit_session_close(li->line);
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+		audit_session_close(li);
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 #endif
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 	return (0);
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 }
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diff -up openssh-5.6p1/Makefile.in.audit openssh-5.6p1/Makefile.in
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--- openssh-5.6p1/Makefile.in.audit	2010-05-12 08:51:39.000000000 +0200
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+++ openssh-5.6p1/Makefile.in	2010-10-20 09:15:47.000000000 +0200
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@@ -81,6 +81,7 @@ SSHOBJS= ssh.o readconf.o clientloop.o s
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 	roaming_common.o roaming_client.o
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 SSHDOBJS=sshd.o auth-rhosts.o auth-passwd.o auth-rsa.o auth-rh-rsa.o \
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+	audit.o audit-bsm.o audit-linux.o platform.o \
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 	sshpty.o sshlogin.o servconf.o serverloop.o \
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 	auth.o auth1.o auth2.o auth-options.o session.o \
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 	auth-chall.o auth2-chall.o groupaccess.o \
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@@ -90,7 +91,7 @@ SSHDOBJS=sshd.o auth-rhosts.o auth-passw
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 	auth-krb5.o \
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 	auth2-gss.o gss-serv.o gss-serv-krb5.o \
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 	loginrec.o auth-pam.o auth-shadow.o auth-sia.o md5crypt.o \
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-	audit.o audit-bsm.o platform.o sftp-server.o sftp-common.o \
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+	sftp-server.o sftp-common.o \
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 	roaming_common.o roaming_serv.o
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 MANPAGES	= moduli.5.out scp.1.out ssh-add.1.out ssh-agent.1.out ssh-keygen.1.out ssh-keyscan.1.out ssh.1.out sshd.8.out sftp-server.8.out sftp.1.out ssh-rand-helper.8.out ssh-keysign.8.out ssh-pkcs11-helper.8.out sshd_config.5.out ssh_config.5.out