Re: problem with MimeBodyPart.getFileName()

[Bill Shannon <bill.shannon@sun.com>]

See the mail.mime.decodeparameters System property described in the
javadocs for the javax.mail.internet package.


Oleg Sukhodolsky wrote:
> Hi,
>
> while processing mail I want to get file name for every attachment and
> so I call getFileName() on every part in multipart message
> this works fine (usually), but recently I've got emial which contains
> the following Content-Disposition field:
>
> Content-Disposition: attachment;
>  filename*0*="UTF-8''%D0%B4%D0%B8%D1%80%D0%B5%D0%BA%D1%82 %D0%BF%D1%80%D0%B5"
>  filename*1*="%D0%B4%D0%BE%D0%BF%D0%BB%D0%B0%D1%82%D0%B0  %D0%9E%D0%A1%D0%9D"
>  filename*2*=".doc";
>
> As you can see the mailer tries to provide several file name splitted
> in several lines.
>
> But this cause the following exception:
>
> javax.mail.internet.ParseException: Expected ';', got "="
>         at javax.mail.internet.ParameterList.<init>(ParameterList.java:280)
>         at 
> javax.mail.internet.ContentDisposition.<init>(ContentDisposition.java:96)
>         at 
> javax.mail.internet.MimeBodyPart.getFileName(MimeBodyPart.java:1123)
>         at javax.mail.internet.MimeBodyPart.getFileName(MimeBodyPart.java:506)
>
> (btw I'm using javamail 1.4.2)
>
> I've debugged the problem a bit and came to simple test which
> reproduces the problem:
>
> ----
>
> import javax.mail.internet.ParameterList;
> import javax.mail.internet.ParseException;
>
> public class mail_test_1 {
>     public static void main(String[] args) throws ParseException {
>         System.setProperty("mail.mime.decodetext.strict", "false");
>         System.setProperty("mail.mime.address.strict", "false");
>         System.setProperty("mail.mime.parameters.strict", "false");
>         System.setProperty("mail.mime.base64.ignoreerrors", "true");
>         final String params =
> ";\nfilename*0*=\"filename0\"\nfilename*1*=\"filename1\"";
> //         final String params = ";\r\n
> filename*0*=\"UTF-8''%D0%B4%D0%B8%D1%80%D0%B5%D0%BA%D1%82
> %D0%BF%D1%80%D0%B5\"\r\n
> filename*1*=\"%D0%B4%D0%BE%D0%BF%D0%BB%D0%B0%D1%82%D0%B0
> %D0%9E%D0%A1%D0%9D\"\r\n filename*2*=\".doc\";";
>         new ParameterList(params);
>     }
> }
> ----
>
> In the test both values of "params" variable cause the same exception.
>
> I understand that the format of Content-Disposition used in this email
> is not (let's say) accurate ;)  but, by any chance
> is there any system property which may help with parsing it?  If not,
> is it possible to add some code to javamail to
> handle such format, or it is against java-mail strategy?
>
> Thanks in advance, Oleg.