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/* gdm-session-linux-auditor.c - Object for Linux auditing of session login/logout
*
* Copyright (C) 2004, 2008 Sun Microsystems, Inc.
* Copyright (C) 2005, 2008 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* Written by: Brian A. Cameron <Brian.Cameron@sun.com>
* Gary Winiger <Gary.Winiger@sun.com>
* Ray Strode <rstrode@redhat.com>
* Steve Grubb <sgrubb@redhat.com>
*/
#include "config.h"
#include "gdm-session-linux-auditor.h"
#include <fcntl.h>
#include <pwd.h>
#include <syslog.h>
#include <unistd.h>
#include <libaudit.h>
#include <glib.h>
struct _GdmSessionLinuxAuditorPrivate
{
int audit_fd;
};
static void gdm_session_linux_auditor_finalize (GObject *object);
G_DEFINE_TYPE (GdmSessionLinuxAuditor, gdm_session_linux_auditor, GDM_TYPE_SESSION_AUDITOR)
static void
log_user_message (GdmSessionAuditor *auditor,
gint type,
gint result)
{
GdmSessionLinuxAuditor *linux_auditor;
char buf[512];
char *username;
char *hostname;
char *display_device;
struct passwd *pw;
linux_auditor = GDM_SESSION_LINUX_AUDITOR (auditor);
g_object_get (G_OBJECT (auditor), "username", &username, NULL);
g_object_get (G_OBJECT (auditor), "hostname", &hostname, NULL);
g_object_get (G_OBJECT (auditor), "display-device", &display_device, NULL);
if (username != NULL) {
pw = getpwnam (username);
} else {
username = g_strdup ("unknown");
pw = NULL;
}
if (pw != NULL) {
g_snprintf (buf, sizeof (buf), "uid=%d", pw->pw_uid);
audit_log_user_message (linux_auditor->priv->audit_fd, type,
buf, hostname, NULL, display_device,
result);
} else {
g_snprintf (buf, sizeof (buf), "acct=%s", username);
audit_log_user_message (linux_auditor->priv->audit_fd, type,
buf, hostname, NULL, display_device,
result);
}
g_free (username);
g_free (hostname);
g_free (display_device);
}
static void
gdm_session_linux_auditor_report_login (GdmSessionAuditor *auditor)
{
log_user_message (auditor, AUDIT_USER_LOGIN, 1);
}
static void
gdm_session_linux_auditor_report_login_failure (GdmSessionAuditor *auditor,
int pam_error_code,
const char *pam_error_string)
{
log_user_message (auditor, AUDIT_USER_LOGIN, 0);
}
static void
gdm_session_linux_auditor_report_logout (GdmSessionAuditor *auditor)
{
log_user_message (auditor, AUDIT_USER_LOGOUT, 1);
}
static void
gdm_session_linux_auditor_class_init (GdmSessionLinuxAuditorClass *klass)
{
GObjectClass *object_class;
GdmSessionAuditorClass *auditor_class;
object_class = G_OBJECT_CLASS (klass);
auditor_class = GDM_SESSION_AUDITOR_CLASS (klass);
object_class->finalize = gdm_session_linux_auditor_finalize;
auditor_class->report_login = gdm_session_linux_auditor_report_login;
auditor_class->report_login_failure = gdm_session_linux_auditor_report_login_failure;
auditor_class->report_logout = gdm_session_linux_auditor_report_logout;
g_type_class_add_private (auditor_class, sizeof (GdmSessionLinuxAuditorPrivate));
}
static void
gdm_session_linux_auditor_init (GdmSessionLinuxAuditor *auditor)
{
auditor->priv = G_TYPE_INSTANCE_GET_PRIVATE (auditor,
GDM_TYPE_SESSION_LINUX_AUDITOR,
GdmSessionLinuxAuditorPrivate);
auditor->priv->audit_fd = audit_open ();
}
static void
gdm_session_linux_auditor_finalize (GObject *object)
{
GdmSessionLinuxAuditor *linux_auditor;
GObjectClass *parent_class;
linux_auditor = GDM_SESSION_LINUX_AUDITOR (object);
close (linux_auditor->priv->audit_fd);
parent_class = G_OBJECT_CLASS (gdm_session_linux_auditor_parent_class);
if (parent_class->finalize != NULL) {
parent_class->finalize (object);
}
}
GdmSessionAuditor *
gdm_session_linux_auditor_new (const char *hostname,
const char *display_device)
{
GObject *auditor;
auditor = g_object_new (GDM_TYPE_SESSION_LINUX_AUDITOR,
"hostname", hostname,
"display-device", display_device,
NULL);
return GDM_SESSION_AUDITOR (auditor);
}
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