modbus: register logger functions

src/app-layer-modbus.c

@@ -249,6 +249,21 @@ void *ModbusGetTx(void *alstate, uint64_t tx_id) {
     return NULL;
 }
 
+void ModbusSetTxLogged(void *alstate, void *vtx, uint32_t logger)
+{
+    ModbusTransaction *tx = (ModbusTransaction *)vtx;
+    tx->logged |= logger;
+}
+
+int ModbusGetTxLogged(void *alstate, void *vtx, uint32_t logger)
+{
+    ModbusTransaction *tx = (ModbusTransaction *)vtx;
+    if (tx->logged & logger)
+        return 1;
+
+    return 0;
+}
+
 uint64_t ModbusGetTxCnt(void *alstate) {
     return ((uint64_t) ((ModbusState *) alstate)->transaction_max);
 }
@@ -1480,6 +1495,8 @@ void RegisterModbusParsers(void)
 
         AppLayerParserRegisterGetTx(IPPROTO_TCP, ALPROTO_MODBUS, ModbusGetTx);
         AppLayerParserRegisterGetTxCnt(IPPROTO_TCP, ALPROTO_MODBUS, ModbusGetTxCnt);
+        AppLayerParserRegisterLoggerFuncs(IPPROTO_TCP, ALPROTO_MODBUS, ModbusGetTxLogged,
+                                          ModbusSetTxLogged);
         AppLayerParserRegisterTxFreeFunc(IPPROTO_TCP, ALPROTO_MODBUS, ModbusStateTxFree);
 
         AppLayerParserRegisterGetStateProgressFunc(IPPROTO_TCP, ALPROTO_MODBUS, ModbusGetAlstateProgress);

src/app-layer-modbus.h

@@ -83,6 +83,7 @@ typedef struct ModbusTransaction_ {
     struct ModbusState_ *modbus;
 
     uint64_t    tx_num;         /**< internal: id */
+    uint32_t    logged;         /**< flags indicating which loggers have logged */
     uint16_t    transactionId;
     uint16_t    length;
     uint8_t     function;