[Jsdsi-devel] Sexp threading issue?

[Sean R. <sra...@ae...>]

Guys,

Need some help here...

I have an application that works a dream when one user is using it, but 
as soon as two are I repeatedly get the stack trace below.

Caused by: java.lang.NumberFormatException: For input string: ""
        at 
java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
        at java.lang.Long.parseLong(Long.java:415)
        at java.lang.Long.parseLong(Long.java:452)
        at java.text.DigitList.getLong(DigitList.java:149)
        at java.text.DecimalFormat.parse(DecimalFormat.java:1068)
        at java.text.SimpleDateFormat.subParse(SimpleDateFormat.java:1705)
        at java.text.SimpleDateFormat.parse(SimpleDateFormat.java:1156)
        at java.text.DateFormat.parse(DateFormat.java:333)
        at jsdsi.sexp.SexpUtil.parseDate(SexpUtil.java:104)
        at jsdsi.Validity.parseValidity(Validity.java:253)
        at jsdsi.Cert.parseCert(Cert.java:240)
        at jsdsi.Element$Default.parseElement(Element.java:37)
        at jsdsi.Sequence.parseSequence(Sequence.java:107)
        at jsdsi.Obj.parseObj(Obj.java:206)
        at jsdsi.Obj.parseObj(Obj.java:191)
        at jsdsi.sexp.ObjInputStream.readObj(ObjInputStream.java:52)
        at jsdsi.sexp.CertificateFactory.readObj(CertificateFactory.java:43)
        at 
jsdsi.sexp.CertificateFactory.readCertificate(CertificateFactory.java:48)
        at 
jsdsi.sexp.CertificateFactory.engineGenerateCertificate(CertificateFactory.java:59)
        ... 228 more

Here's some extra logging info to help show the certificate that it is 
trying to parse:

2004-08-24 10:47:49,109 ERROR [com.aegeus.spki.store.CertificateDAO] 
***** Original byte[] as a java.lang.String *****
2004-08-24 10:47:49,110 ERROR [com.aegeus.spki.store.CertificateDAO] 
(8:sequence(4:cert(7:display10:text/plain)(6:issuer(4:name(10:public-key(3:rsa(1:e3:^A^@^A)(1:n65:^@ÆÊ©4¬qC
IÄ)G^VW¬òY^TÉk%Y* XqRûÚw
tsÿÿÖ¶/C^\Äm^@^QB6<Ðz5à­u5A:èI))(3:uri27:http://secure.aegeus.co.uk/))13:clairerussell))(7:subject(10:public-key(3:rsa(1:e3:^A^@^A)(1:n65:^@´ 
D^XO¡^Zù|¸F7X£A%j^Z^Lòz^?Tϯ
ûOrn^XºS0z^ðz¬0aG}þ^W{-ð¹^EÝd1ùÄà^U))(3:uri27:http://secure.aegeus.co.uk/)))(5:valid(10:not-before19:2004-08-17_15:34:56)(9:not-after19:2014-08-17_15:34:56))(7:comment24:Shared
Workspace 
NameCert))(9:signature(4:hash3:md516:^@·^R]­^\^Zñ^KÓ:^Zë)(10:public-key(3:rsa(1:e3:^A^@^A)(1:n65:^@ÆÊ©4¬qCIÄ)G^VW¬òY^TÉk%Y* XqRûÚw 

tsÿÿÖ¶/C^\Äm^@^QB6<Ðz5à­u5A:èI))(3:uri27:http://secure.aegeus.co.uk/))(13:rsa-pkcs1-md564:¶:¤^_©WÜ6­sÖåô¸¶¨c2     
D^P"xéB°)]Óù&á¾W1yÙ­mæîÛ^Ookõ^XØ^RÉsíT)))
2004-08-24 10:47:49,111 ERROR [com.aegeus.spki.store.CertificateDAO] 
**********

The certificate(s) are fine and as said all works well for one 
user/thread, but consistenly breaks with 2 or more...

I guess it is a multi-threading issue with Sexpression parsing. Has 
anyone seen such a thing before? And as I'm about to try to write a unit 
test to duplicate the error (and then hopefully fix it), does anyone 
have any ideas on its cause?

Regards,

Sean


-- 
Dr. Sean Radford, MBBS, MSc
sra...@ae...
http://www.aegeus-technology.com/