Adding upstream version 1:7.0.3.upstream/1%7.0.3

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 196 insertions, 0 deletions

diff --git a/src/output-json-mqtt.c b/src/output-json-mqtt.c
new file mode 100644
index 0000000..9ea8905
--- /dev/null
+++ b/src/output-json-mqtt.c
@@ -0,0 +1,196 @@
+/* Copyright (C) 2020-2021 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 Sascha Steinbiss <sascha@steinbiss.name>
+ */
+
+#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-mqtt.h"
+#include "output-json-mqtt.h"
+#include "rust.h"
+
+#define MQTT_LOG_PASSWORDS BIT_U32(0)
+#define MQTT_DEFAULTS (MQTT_LOG_PASSWORDS)
+
+typedef struct LogMQTTFileCtx_ {
+    uint32_t    flags;
+    OutputJsonCtx *eve_ctx;
+} LogMQTTFileCtx;
+
+typedef struct LogMQTTLogThread_ {
+    LogMQTTFileCtx *mqttlog_ctx;
+    uint32_t        count;
+    OutputJsonThreadCtx *ctx;
+} LogMQTTLogThread;
+
+bool JsonMQTTAddMetadata(const Flow *f, uint64_t tx_id, JsonBuilder *js)
+{
+    MQTTState *state = FlowGetAppState(f);
+    if (state) {
+        MQTTTransaction *tx = AppLayerParserGetTx(f->proto, ALPROTO_MQTT, state, tx_id);
+        if (tx) {
+            return rs_mqtt_logger_log(tx, MQTT_DEFAULTS, js);
+        }
+    }
+
+    return false;
+}
+
+static int JsonMQTTLogger(ThreadVars *tv, void *thread_data,
+    const Packet *p, Flow *f, void *state, void *tx, uint64_t tx_id)
+{
+    LogMQTTLogThread *thread = thread_data;
+    enum OutputJsonLogDirection dir;
+
+    if (rs_mqtt_tx_is_toclient((MQTTTransaction*) tx)) {
+        dir = LOG_DIR_FLOW_TOCLIENT;
+    } else {
+        dir = LOG_DIR_FLOW_TOSERVER;
+    }
+
+    JsonBuilder *js = CreateEveHeader(p, dir, "mqtt", NULL, thread->mqttlog_ctx->eve_ctx);
+    if (unlikely(js == NULL)) {
+        return TM_ECODE_FAILED;
+    }
+
+    if (!rs_mqtt_logger_log(tx, thread->mqttlog_ctx->flags, js))
+        goto error;
+
+    OutputJsonBuilderBuffer(js, thread->ctx);
+    jb_free(js);
+
+    return TM_ECODE_OK;
+
+error:
+    jb_free(js);
+    return TM_ECODE_FAILED;
+}
+
+static void OutputMQTTLogDeInitCtxSub(OutputCtx *output_ctx)
+{
+    LogMQTTFileCtx *mqttlog_ctx = (LogMQTTFileCtx *)output_ctx->data;
+    SCFree(mqttlog_ctx);
+    SCFree(output_ctx);
+}
+
+static void JsonMQTTLogParseConfig(ConfNode *conf, LogMQTTFileCtx *mqttlog_ctx)
+{
+    const char *query = ConfNodeLookupChildValue(conf, "passwords");
+    if (query != NULL) {
+        if (ConfValIsTrue(query)) {
+            mqttlog_ctx->flags |= MQTT_LOG_PASSWORDS;
+        } else {
+            mqttlog_ctx->flags &= ~MQTT_LOG_PASSWORDS;
+        }
+    } else {
+        mqttlog_ctx->flags |= MQTT_LOG_PASSWORDS;
+    }
+}
+
+static OutputInitResult OutputMQTTLogInitSub(ConfNode *conf,
+    OutputCtx *parent_ctx)
+{
+    OutputInitResult result = { NULL, false };
+    OutputJsonCtx *ajt = parent_ctx->data;
+
+    LogMQTTFileCtx *mqttlog_ctx = SCCalloc(1, sizeof(*mqttlog_ctx));
+    if (unlikely(mqttlog_ctx == NULL)) {
+        return result;
+    }
+    mqttlog_ctx->eve_ctx = ajt;
+
+    OutputCtx *output_ctx = SCCalloc(1, sizeof(*output_ctx));
+    if (unlikely(output_ctx == NULL)) {
+        SCFree(mqttlog_ctx);
+        return result;
+    }
+    output_ctx->data = mqttlog_ctx;
+    output_ctx->DeInit = OutputMQTTLogDeInitCtxSub;
+
+    JsonMQTTLogParseConfig(conf, mqttlog_ctx);
+
+    AppLayerParserRegisterLogger(IPPROTO_TCP, ALPROTO_MQTT);
+
+    result.ctx = output_ctx;
+    result.ok = true;
+    return result;
+}
+
+static TmEcode JsonMQTTLogThreadInit(ThreadVars *t, const void *initdata, void **data)
+{
+    LogMQTTLogThread *thread = SCCalloc(1, sizeof(*thread));
+    if (unlikely(thread == NULL)) {
+        return TM_ECODE_FAILED;
+    }
+
+    if (initdata == NULL) {
+        SCLogDebug("Error getting context for EveLogMQTT.  \"initdata\" is NULL.");
+        SCFree(thread);
+        return TM_ECODE_FAILED;
+    }
+
+    thread->mqttlog_ctx = ((OutputCtx *)initdata)->data;
+    thread->ctx = CreateEveThreadCtx(t, thread->mqttlog_ctx->eve_ctx);
+    if (unlikely(thread->ctx == NULL)) {
+        SCFree(thread);
+        return TM_ECODE_FAILED;
+    }
+
+    *data = (void *)thread;
+
+    return TM_ECODE_OK;
+}
+
+static TmEcode JsonMQTTLogThreadDeinit(ThreadVars *t, void *data)
+{
+    LogMQTTLogThread *thread = (LogMQTTLogThread *)data;
+    if (thread == NULL) {
+        return TM_ECODE_OK;
+    }
+    FreeEveThreadCtx(thread->ctx);
+    SCFree(thread);
+    return TM_ECODE_OK;
+}
+
+void JsonMQTTLogRegister(void)
+{
+    OutputRegisterTxSubModule(LOGGER_JSON_TX, "eve-log", "JsonMQTTLog", "eve-log.mqtt",
+            OutputMQTTLogInitSub, ALPROTO_MQTT, JsonMQTTLogger, JsonMQTTLogThreadInit,
+            JsonMQTTLogThreadDeinit, NULL);
+}