version 5.4.4

DCCEXParser.cpp

@@ -167,8 +167,10 @@ int16_t DCCEXParser::splitValues(int16_t result[MAX_COMMAND_PARAMS], byte *cmd,
                 break;
             if (hot == '\0')
 	      return -1;
-	    if (hot == '>')
+	    if (hot == '>') {
+	      *remainingCmd = '\0';  // terminate the cmd string with 0 instead of '>'
 	      return parameterCount;
+	    }
             state = 2;
             continue;
 
@@ -265,8 +267,9 @@ void DCCEXParser::parse(const FSH * cmd) {
 // See documentation on DCC class for info on this section
 
 void DCCEXParser::parse(Print *stream,  byte *com,  RingStream *ringStream) {
-  // This function can get stings of the form "<C OMM AND>" or "C OMM AND"
+  // This function can get stings of the form "<C OMM AND>" or "C OMM AND>"
-  // found is true first after the leading "<" has been passed
+  // found is true first after the leading "<" has been passed which results
+  // in parseOne() getting c="C OMM AND>"
   bool found = (com[0] != '<');
   for (byte *c=com; c[0] != '\0'; c++) {
     if (found) {

SerialManager.cpp

@@ -126,8 +126,8 @@ void SerialManager::loop2() {
         buffer[0] = '\0';
       }
     } else { // if (inCommandPayload)
-      if (bufferLength <  (COMMAND_BUFFER_SIZE-1))
+      if (bufferLength <  (COMMAND_BUFFER_SIZE-1)) {
-        buffer[bufferLength++] = ch;
+        buffer[bufferLength++] = ch;          // advance bufferLength
 	if (inCommandPayload > PAYLOAD_NORMAL) {
 	  if (inCommandPayload > 32 + 2) {    // String way too long
 	    ch = '>';                         // we end this nonsense
@@ -142,14 +142,18 @@ void SerialManager::loop2() {
 	}
 	if (inCommandPayload == PAYLOAD_NORMAL) {
 	  if (ch == '>') {
-          buffer[bufferLength] = '\0';
+	    buffer[bufferLength] = '\0';               // This \0 is after the '>'
-          DCCEXParser::parse(serial, buffer, NULL); 
+	    DCCEXParser::parse(serial, buffer, NULL);  // buffer parsed with trailing '>'
 	    inCommandPayload = PAYLOAD_FALSE;
 	    break;
 	  } else if (ch == '"') {
 	    inCommandPayload = PAYLOAD_STRING;
 	  }
 	}
+      } else {
+	DIAG(F("Parse error: input buffer overflow"));
+	inCommandPayload = PAYLOAD_FALSE;
+      }
     }
   }
 }

version.h

@@ -3,7 +3,8 @@
 
 #include "StringFormatter.h"
 
-#define VERSION "5.4.3"
+#define VERSION "5.4.4"
+// 5.4.4  - bugfix in parser, input buffer overrun and trailing > that did break <+>
 // 5.4.3  - bugfix changeFn for functions 29..31
 // 5.4.2  - Reversed turnout bugfix
 // 5.4.1  - ESP32 bugfix packet buffer race