[jira] [Updated] (AMQ-5389) MQTTCodec headerParser - not reducing readSize if nulls are read

["Curt Jutzi (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AMQ-5389?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Curt Jutzi updated AMQ-5389:
----------------------------
    Description: 
in the header read you'll notice that if 0's are read, i increases to protect the end of buffer, but when you pass this down to the next parser the size of the buffer passed is readSize-1 not readSize-i
As well there is a check for readsize > 1.. this should be (readsize-i > 1)
{monospaced}
@Override
        public void parse(DataByteArrayInputStream data, int readSize) throws IOException {
            int i = 0;
            while (i++ < readSize) {
                byte b = data.readByte();
                // skip repeating nulls
                if (b == 0) {
                    continue;
                }

                header = b;

                currentParser = initializeVariableLengthParser();
{color:red}
                if (readSize > 1) {
                    currentParser.parse(data, readSize - 1);
{color}
                }
                return;
            }
        }
{monospaced}

  was:
in the header read you'll notice that if 0's are read, i increases to protect the end of buffer, but when you pass this down to the next parser the size of the buffer passed is readSize-1 not readSize-i
As well there is a check for readsize > 1.. this should be (readsize-i > 1)
{{
@Override
        public void parse(DataByteArrayInputStream data, int readSize) throws IOException {
            int i = 0;
            while (i++ < readSize) {
                byte b = data.readByte();
                // skip repeating nulls
                if (b == 0) {
                    continue;
                }

                header = b;

                currentParser = initializeVariableLengthParser();
{color:red}
                if (readSize > 1) {
                    currentParser.parse(data, readSize - 1);
{color}
                }
                return;
            }
        }
}}


> MQTTCodec headerParser - not reducing readSize if nulls are read
> ----------------------------------------------------------------
>
>                 Key: AMQ-5389
>                 URL: https://issues.apache.org/jira/browse/AMQ-5389
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: MQTT
>    Affects Versions: 5.11.0
>            Reporter: Curt Jutzi
>
> in the header read you'll notice that if 0's are read, i increases to protect the end of buffer, but when you pass this down to the next parser the size of the buffer passed is readSize-1 not readSize-i
> As well there is a check for readsize > 1.. this should be (readsize-i > 1)
> {monospaced}
> @Override
>         public void parse(DataByteArrayInputStream data, int readSize) throws IOException {
>             int i = 0;
>             while (i++ < readSize) {
>                 byte b = data.readByte();
>                 // skip repeating nulls
>                 if (b == 0) {
>                     continue;
>                 }
>                 header = b;
>                 currentParser = initializeVariableLengthParser();
> {color:red}
>                 if (readSize > 1) {
>                     currentParser.parse(data, readSize - 1);
> {color}
>                 }
>                 return;
>             }
>         }
> {monospaced}



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