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/*
* Copyright (c) 2002-2014 Balabit
* Copyright (c) 1998-2012 Balázs Scheidler
*
* 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 "affile-source.h"
#include "driver.h"
#include "messages.h"
#include "gprocess.h"
#include "file-specializations.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <time.h>
#include <stdlib.h>
#include <iv.h>
void
affile_sd_set_transport_name(AFFileSourceDriver *self, const gchar *transport_name)
{
g_free(self->transport_name);
self->transport_name = g_strdup(transport_name);
self->transport_name_len = strlen(transport_name);
}
static gboolean
_is_linux_proc_kmsg(const gchar *filename)
{
#ifdef __linux__
if (strcmp(filename, "/proc/kmsg") == 0)
return TRUE;
#endif
return FALSE;
}
static gboolean
_is_linux_dev_kmsg(const gchar *filename)
{
#ifdef __linux__
if (strcmp(filename, "/dev/kmsg") == 0)
return TRUE;
#endif
return FALSE;
}
static inline gboolean
_is_device_node(const gchar *filename)
{
struct stat st;
if (stat(filename, &st) < 0)
return FALSE;
return !S_ISREG(st.st_mode);
}
static void
affile_sd_queue(LogPipe *s, LogMessage *msg, const LogPathOptions *path_options)
{
AFFileSourceDriver *self = (AFFileSourceDriver *) s;
log_msg_set_value(msg, LM_V_TRANSPORT, self->transport_name, self->transport_name_len);
log_src_driver_queue_method(s, msg, path_options);
}
gboolean
affile_sd_init(LogPipe *s)
{
AFFileSourceDriver *self = (AFFileSourceDriver *) s;
GlobalConfig *cfg = log_pipe_get_config(s);
if (!log_src_driver_init_method(s))
return FALSE;
if (!file_reader_options_init(&self->file_reader_options, cfg, self->super.super.group))
return FALSE;
file_opener_options_init(&self->file_opener_options, cfg);
file_opener_set_options(self->file_opener, &self->file_opener_options);
self->file_reader = file_reader_new(self->filename->str, &self->file_reader_options,
self->file_opener,
&self->super, cfg);
log_pipe_set_options(&self->file_reader->super, &self->super.super.super.options);
log_pipe_append(&self->file_reader->super, &self->super.super.super);
return log_pipe_init(&self->file_reader->super);
}
static gboolean
affile_sd_deinit(LogPipe *s)
{
AFFileSourceDriver *self = (AFFileSourceDriver *) s;
log_pipe_deinit(&self->file_reader->super);
if (!log_src_driver_deinit_method(s))
return FALSE;
return TRUE;
}
static void
affile_sd_free(LogPipe *s)
{
AFFileSourceDriver *self = (AFFileSourceDriver *) s;
g_free(self->transport_name);
file_opener_free(self->file_opener);
log_pipe_unref(&self->file_reader->super);
g_string_free(self->filename, TRUE);
file_reader_options_deinit(&self->file_reader_options);
file_opener_options_deinit(&self->file_opener_options);
log_src_driver_free(s);
}
AFFileSourceDriver *
affile_sd_new_instance(gchar *filename, GlobalConfig *cfg)
{
AFFileSourceDriver *self = g_new0(AFFileSourceDriver, 1);
log_src_driver_init_instance(&self->super, cfg);
self->super.super.super.init = affile_sd_init;
self->super.super.super.queue = affile_sd_queue;
self->super.super.super.deinit = affile_sd_deinit;
self->super.super.super.free_fn = affile_sd_free;
self->filename = g_string_new(filename);
file_reader_options_defaults(&self->file_reader_options);
self->file_reader_options.reader_options.super.stats_level = STATS_LEVEL1;
file_opener_options_defaults(&self->file_opener_options);
return self;
}
LogDriver *
affile_sd_new(gchar *filename, GlobalConfig *cfg)
{
AFFileSourceDriver *self = affile_sd_new_instance(filename, cfg);
self->file_reader_options.reader_options.super.stats_source = stats_register_type("file");
if (_is_device_node(filename))
{
self->file_reader_options.follow_freq = 0;
if (_is_linux_dev_kmsg(self->filename->str))
{
self->file_opener = file_opener_for_devkmsg_new();
affile_sd_set_transport_name(self, "local+devkmsg");
}
else
{
self->file_opener = file_opener_for_regular_source_files_new();
affile_sd_set_transport_name(self, "local+device");
}
}
else if (_is_linux_proc_kmsg(filename))
{
affile_sd_set_transport_name(self, "local+prockmsg");
self->file_reader_options.follow_freq = 0;
self->file_opener_options.needs_privileges = TRUE;
self->file_opener = file_opener_for_prockmsg_new();
}
else
{
affile_sd_set_transport_name(self, "local+file");
self->file_reader_options.follow_freq = 1000;
self->file_opener = file_opener_for_regular_source_files_new();
}
self->file_reader_options.restore_state = self->file_reader_options.follow_freq > 0;
file_opener_options_defaults_dont_change_permissions(&self->file_opener_options);
self->file_opener_options.create_dirs = FALSE;
return &self->super.super;
}
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