[MIME4J-41] Content-Type parameter values that contain only digits are ignored

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.3, 0.4
• Fix Version/s: 0.3, 0.4
• Environment: Any
• Assignee: Unassigned
• Reporter: Antony Bowesman
• Created: 18/Mar/08 21:46
• Updated: 25/May/08 09:45
• Resolved: 25/May/08 09:45

Description

Parameter values in the Content-Type message header are ignored if they only contain digits. This is a particular problem if a message contains an unquoted boundary string that contains only digits, it is not recognised as a valid boundary string and therefore the a Multipart object is created that fails the Message.isMultipart() test.

Attached test case shows the problem

The ContentTypeParser.jj source for value parsing is

String value() :

{Token t;}
{
( t=<ATOKEN>
| t=<QUOTEDSTRING>
)
{ return t.image; }
}

however, if a value contains only digits, it is parsed as <DIGITS>, so will not be assigned.

Sensible solution seems to be to change the value() implementation in JavaCC source to include digit. Patch details

— ContentTypeParser.jj 2007-05-25 02:04:09.000000000 +1000
+++ ContentTypeParserFix.jj 2008-03-19 08:44:14.109375000 +1100
@@ -122,6 +122,7 @@
{Token t;}

{
( t=<ATOKEN>
+| t=<DIGITS>

t=<QUOTEDSTRING> ) { return t.image; }