/* Copyright (C) 2018-2021 Open Information Security Foundation

 *

 * You can copy, redistribute or modify this Program under the terms of

 * the GNU General Public License version 2 as published by the Free

 * Software Foundation.

 *

 * 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

 * version 2 along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

 * 02110-1301, USA.

 */

/**

 * \file

 *

 * \author Pierre Chifflier <chifflier@wzdftpd.net>

 *

 * Implement JSON/eve logging app-layer SNMP.

 */

#include "suricata-common.h"

#include "detect.h"

#include "pkt-var.h"

#include "conf.h"

#include "threads.h"

#include "threadvars.h"

#include "tm-threads.h"

#include "util-unittest.h"

#include "util-buffer.h"

#include "util-debug.h"

#include "util-byte.h"

#include "output.h"

#include "output-json.h"

#include "app-layer.h"

#include "app-layer-parser.h"

#include "app-layer-snmp.h"

#include "output-json-snmp.h"

#include "rust.h"

static int JsonSNMPLogger(ThreadVars *tv, void *thread_data,

    const Packet *p, Flow *f, void *state, void *tx, uint64_t tx_id)

{

    SNMPTransaction *snmptx = tx;

    OutputJsonThreadCtx *thread = thread_data;

    JsonBuilder *jb = CreateEveHeader(p, LOG_DIR_PACKET, "snmp", NULL, thread->ctx);

    if (unlikely(jb == NULL)) {

        return TM_ECODE_FAILED;

    }

    jb_open_object(jb, "snmp");

    if (!rs_snmp_log_json_response(jb, snmptx)) {

        goto error;

    }

    jb_close(jb);

    OutputJsonBuilderBuffer(jb, thread);

    jb_free(jb);

    return TM_ECODE_OK;

error:

    jb_free(jb);

    return TM_ECODE_FAILED;

}

static OutputInitResult OutputSNMPLogInitSub(ConfNode *conf,

    OutputCtx *parent_ctx)

{

    AppLayerParserRegisterLogger(IPPROTO_UDP, ALPROTO_SNMP);

    return OutputJsonLogInitSub(conf, parent_ctx);

}

void JsonSNMPLogRegister(void)

{

    /* Register as an eve sub-module. */

    OutputRegisterTxSubModule(LOGGER_JSON_TX, "eve-log", "JsonSNMPLog", "eve-log.snmp",

            OutputSNMPLogInitSub, ALPROTO_SNMP, JsonSNMPLogger, JsonLogThreadInit,

            JsonLogThreadDeinit, NULL);

    SCLogDebug("SNMP JSON logger registered.");

}