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/*
* Copyright (c) 2017 Balabit
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation, 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#include "directory-monitor-content-comparator.h"
#include "messages.h"
#include "timeutils/misc.h"
#include "glib.h"
#include "glib/gstdio.h"
#include <iv.h>
static void
_handle_new_entry(CollectionComparatorEntry *entry, gpointer user_data)
{
DirectoryMonitorContentComparator *self = (DirectoryMonitorContentComparator *)user_data;
if (self->super.callback)
{
DirectoryMonitorEvent event;
event.name = entry->value;
event.full_path = build_filename(self->super.real_path, event.name);
event.event_type = g_file_test(event.full_path, G_FILE_TEST_IS_DIR) ? DIRECTORY_CREATED : FILE_CREATED;
self->super.callback(&event, self->super.callback_data);
g_free(event.full_path);
}
}
static void
_handle_deleted_entry(CollectionComparatorEntry *entry, gpointer user_data)
{
DirectoryMonitorContentComparator *self = (DirectoryMonitorContentComparator *)user_data;
if (self->super.callback)
{
DirectoryMonitorEvent event;
event.name = entry->value;
event.event_type = FILE_DELETED;
event.full_path = build_filename(self->super.real_path, event.name);
self->super.callback(&event, self->super.callback_data);
g_free(event.full_path);
}
}
static void
_handle_deleted_self(DirectoryMonitorContentComparator *self)
{
if (self->super.callback)
{
DirectoryMonitorEvent event;
event.name = self->super.real_path;
event.event_type = DIRECTORY_DELETED;
event.full_path = self->super.real_path;
self->super.callback(&event, self->super.callback_data);
}
}
void
directory_monitor_content_comparator_rescan_directory(DirectoryMonitorContentComparator *self, gboolean initial_scan)
{
GError *error = NULL;
GDir *directory = g_dir_open(self->super.real_path, 0, &error);
if (FALSE == initial_scan)
collection_comparator_start(self->comparator);
if (directory)
{
const gchar *filename;
while((filename = g_dir_read_name(directory)))
{
gchar *full_filename = build_filename(self->super.real_path, filename);
GStatBuf file_stat;
if (g_stat(full_filename, &file_stat) == 0)
{
g_free(full_filename);
gint64 fids[2] = { file_stat.st_dev, file_stat.st_ino };
if (initial_scan)
collection_comparator_add_initial_value(self->comparator, fids, filename);
else
collection_comparator_add_value(self->comparator, fids, filename);
}
else
{
g_free(full_filename);
msg_error("Error invoking g_stat() on file", evt_tag_str("filename", filename));
}
}
g_dir_close(directory);
if (FALSE == initial_scan)
collection_comparator_stop(self->comparator);
}
else
{
if (FALSE == initial_scan)
collection_comparator_stop(self->comparator);
_handle_deleted_self(self);
msg_debug("Error while opening directory",
evt_tag_str("dirname", self->super.real_path),
evt_tag_str("error", error->message));
g_clear_error(&error);
}
}
static void
_free_fn(DirectoryMonitor *s)
{
DirectoryMonitorContentComparator *self = (DirectoryMonitorContentComparator *)s;
directory_monitor_content_comparator_free(self);
}
void
directory_monitor_content_comparator_free(DirectoryMonitorContentComparator *self)
{
if (self->comparator)
collection_comparator_free(self->comparator);
}
void
directory_monitor_content_comparator_init_instance(DirectoryMonitorContentComparator *self,
const gchar *dir, guint recheck_time,
const gchar *method)
{
self->super.free_fn = _free_fn;
directory_monitor_init_instance(&self->super, dir, recheck_time, method);
self->comparator = collection_comparator_new();
collection_comporator_set_callbacks(self->comparator,
_handle_new_entry,
_handle_deleted_entry,
self);
}
DirectoryMonitor *
directory_monitor_content_comparator_new(void)
{
DirectoryMonitorContentComparator *self = g_new0(DirectoryMonitorContentComparator, 1);
return &self->super;
}
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