1 files changed, 93 insertions, 0 deletions
diff --git a/src/output-json-snmp.c b/src/output-json-snmp.c
new file mode 100644
index 0000000..27545b6
--- /dev/null
+++ b/src/output-json-snmp.c
@@ -0,0 +1,93 @@
+/* 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.");
+}