- eventName = new String(data, dataOffset, data.length - dataOffset).trim();
- filterString = null; /* Not yet sent by the sessiond */
+ /* Read the event name */
+ byte[] eventNameBytes = new byte[EVENT_NAME_LENGTH];
+ buf.get(eventNameBytes);
+ eventName = new String(eventNameBytes).trim();
+
+ /*
+ * Read the filter string. The buffer contains the length (number of
+ * bytes), then the bytes themselves.
+ *
+ * The length is represented as an unsigned int, but it should never
+ * be greater than Integer.MAX_VALUE.
+ */
+ int filterStringLength = buf.getInt();
+ if (filterStringLength < 0) {
+ /*
+ * The (unsigned) length is above what the sessiond should send. The
+ * command cannot be processed.
+ */
+ filterString = null;
+ commandIsValid = false;
+ return;
+ }
+ if (filterStringLength == 0) {
+ /* There is explicitly no filter string */
+ filterString = "";
+ commandIsValid = true;
+ return;
+ }
+
+ byte[] filterStringBytes = new byte[filterStringLength];
+ buf.get(filterStringBytes);
+ filterString = new String(filterStringBytes).trim();
+
+ commandIsValid = true;