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/*
* Copyright (c) 2020 Balazs Scheidler <bazsi77@gmail.com>
* Copyright (c) 2019 Balabit
* Copyright (c) 2019 Kokan <kokaipeter@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; 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 "rewrite-set-facility.h"
#include "template/templates.h"
#include "syslog-names.h"
#include "scratch-buffers.h"
#include "parse-number.h"
#include <stdlib.h>
typedef struct _LogRewriteSetFacility LogRewriteSetFacility;
struct _LogRewriteSetFacility
{
LogRewrite super;
LogTemplate *facility;
};
static gint
_convert_facility_as_number(const gchar *facility_text)
{
gint64 facility = 0;
if (!parse_dec_number(facility_text, &facility))
return -1;
if (facility > 127)
return -1;
return FACILITY_CODE(facility);
}
static gint
_convert_facility_as_text(const gchar *facility_text)
{
return syslog_name_lookup_facility_by_name(facility_text);
}
static gint
_convert_facility(const gchar *facility_text)
{
gint facility = _convert_facility_as_number(facility_text);
if (facility >= 0)
return facility;
facility = _convert_facility_as_text(facility_text);
if (facility >= 0)
return facility;
return -1;
}
static void
_set_msg_facility(LogMessage *msg, const guint32 facility)
{
msg->pri = (msg->pri & ~LOG_FACMASK) | facility;
}
static void
log_rewrite_set_facility_process(LogRewrite *s, LogMessage **pmsg, const LogPathOptions *path_options)
{
ScratchBuffersMarker marker;
GString *result = scratch_buffers_alloc_and_mark(&marker);
LogRewriteSetFacility *self = (LogRewriteSetFacility *) s;
log_msg_make_writable(pmsg, path_options);
log_template_format(self->facility, *pmsg, NULL, LTZ_LOCAL, 0, NULL, result);
const gint facility = _convert_facility(result->str);
if (facility < 0)
{
msg_debug("Warning: invalid value passed to set-facility()",
evt_tag_str("facility", result->str),
log_pipe_location_tag(&s->super));
goto error;
}
msg_trace("Setting syslog facility",
evt_tag_int("old_facility", (*pmsg)->pri & LOG_FACMASK),
evt_tag_int("new_facility", facility),
evt_tag_printf("msg", "%p", *pmsg));
_set_msg_facility(*pmsg, facility);
error:
scratch_buffers_reclaim_marked(marker);
}
static LogPipe *
log_rewrite_set_facility_clone(LogPipe *s)
{
LogRewriteSetFacility *self = (LogRewriteSetFacility *) s;
LogRewriteSetFacility *cloned = (LogRewriteSetFacility *)log_rewrite_set_facility_new(log_template_ref(self->facility),
s->cfg);
if (self->super.condition)
cloned->super.condition = filter_expr_ref(self->super.condition);
return &cloned->super.super;
}
void
log_rewrite_set_facility_free(LogPipe *s)
{
LogRewriteSetFacility *self = (LogRewriteSetFacility *) s;
log_template_unref(self->facility);
log_rewrite_free_method(s);
}
LogRewrite *
log_rewrite_set_facility_new(LogTemplate *facility, GlobalConfig *cfg)
{
LogRewriteSetFacility *self = g_new0(LogRewriteSetFacility, 1);
log_rewrite_init_instance(&self->super, cfg);
self->super.super.free_fn = log_rewrite_set_facility_free;
self->super.super.clone = log_rewrite_set_facility_clone;
self->super.process = log_rewrite_set_facility_process;
self->facility = log_template_ref(facility);
return &self->super;
}
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